From ca9bc12b90fbc4e2b1f81360f63842c9da54bb3c Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Tue, 11 Jan 2011 13:47:24 +0100 Subject: drbd: Get rid of BE_DRBD_MAGIC and BE_DRBD_MAGIC_BIG Converting the constants happens at compile time. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 9e5f5607eba3..d28202811672 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -334,9 +334,7 @@ enum drbd_timeout_flag { #define UUID_JUST_CREATED ((__u64)4) #define DRBD_MAGIC 0x83740267 -#define BE_DRBD_MAGIC __constant_cpu_to_be32(DRBD_MAGIC) #define DRBD_MAGIC_BIG 0x835a -#define BE_DRBD_MAGIC_BIG __constant_cpu_to_be16(DRBD_MAGIC_BIG) /* these are of type "int" */ #define DRBD_MD_INDEX_INTERNAL -1 -- cgit v1.2.3 From 9749f30f1a387070e6e8351f35aeb829eacc3ab6 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Wed, 20 Jul 2011 14:59:37 +0200 Subject: idr: idr_for_each_entry() macro Inspired by the list_for_each_entry() macro --- include/linux/idr.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/idr.h b/include/linux/idr.h index 255491cf522e..52a9da295296 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -152,4 +152,15 @@ void ida_simple_remove(struct ida *ida, unsigned int id); void __init idr_init_cache(void); +/** + * idr_for_each_entry - iterate over an idr's elements of a given type + * @idp: idr handle + * @entry: the type * to use as cursor + * @id: id entry's key + */ +#define idr_for_each_entry(idp, entry, id) \ + for (id = 0, entry = (typeof(entry))idr_get_next((idp), &(id)); \ + entry != NULL; \ + ++id, entry = (typeof(entry))idr_get_next((idp), &(id))) + #endif /* __IDR_H__ */ -- cgit v1.2.3 From fd340c12c98b57ec0751ebb317057eee41be0c3d Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Wed, 19 Jan 2011 16:57:39 +0100 Subject: drbd: Use new header layout The new header layout will only be used if the peer supports it of course. For the first packet and the handshake packet the old (h80) layout is used for compatibility reasons. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index d28202811672..35fc08a0a552 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -56,7 +56,7 @@ extern const char *drbd_buildtag(void); #define REL_VERSION "8.3.11" #define API_VERSION 88 #define PRO_VERSION_MIN 86 -#define PRO_VERSION_MAX 96 +#define PRO_VERSION_MAX 100 enum drbd_io_error_p { -- cgit v1.2.3 From 4738fa16907a933d72bbcae1b8922dc9330fde92 Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Mon, 21 Feb 2011 13:20:55 +0100 Subject: drbd: use clear_bit_unlock() where appropriate Some open-coded clear_bit(); smp_mb__after_clear_bit(); should in fact have been smp_mb__before_clear_bit(); clear_bit(); Instead, use clear_bit_unlock() to annotate the intention, and have it do the right thing. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/lru_cache.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/lru_cache.h b/include/linux/lru_cache.h index 7a71ffad037c..4cceafb0732d 100644 --- a/include/linux/lru_cache.h +++ b/include/linux/lru_cache.h @@ -275,8 +275,7 @@ static inline int lc_try_lock(struct lru_cache *lc) */ static inline void lc_unlock(struct lru_cache *lc) { - clear_bit(__LC_DIRTY, &lc->flags); - smp_mb__after_clear_bit(); + clear_bit_unlock(__LC_DIRTY, &lc->flags); } static inline int lc_is_used(struct lru_cache *lc, unsigned int enr) -- cgit v1.2.3 From 46a15bc3ec425b546d140581c28192ab7877ddc4 Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Mon, 21 Feb 2011 13:21:01 +0100 Subject: lru_cache: allow multiple changes per transaction Allow multiple changes to the active set of elements in lru_cache. The only current user of lru_cache, drbd, is driving this generalisation. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/lru_cache.h | 68 ++++++++++++++++++++++++++++++----------------- 1 file changed, 44 insertions(+), 24 deletions(-) (limited to 'include/linux') diff --git a/include/linux/lru_cache.h b/include/linux/lru_cache.h index 4cceafb0732d..cbafae40c649 100644 --- a/include/linux/lru_cache.h +++ b/include/linux/lru_cache.h @@ -166,9 +166,11 @@ struct lc_element { /* if we want to track a larger set of objects, * it needs to become arch independend u64 */ unsigned lc_number; - /* special label when on free list */ #define LC_FREE (~0U) + + /* for pending changes */ + unsigned lc_new_number; }; struct lru_cache { @@ -176,6 +178,7 @@ struct lru_cache { struct list_head lru; struct list_head free; struct list_head in_use; + struct list_head to_be_changed; /* the pre-created kmem cache to allocate the objects from */ struct kmem_cache *lc_cache; @@ -186,7 +189,7 @@ struct lru_cache { size_t element_off; /* number of elements (indices) */ - unsigned int nr_elements; + unsigned int nr_elements; /* Arbitrary limit on maximum tracked objects. Practical limit is much * lower due to allocation failures, probably. For typical use cases, * nr_elements should be a few thousand at most. @@ -194,18 +197,19 @@ struct lru_cache { * 8 high bits of .lc_index to be overloaded with flags in the future. */ #define LC_MAX_ACTIVE (1<<24) + /* allow to accumulate a few (index:label) changes, + * but no more than max_pending_changes */ + unsigned int max_pending_changes; + /* number of elements currently on to_be_changed list */ + unsigned int pending_changes; + /* statistics */ - unsigned used; /* number of lelements currently on in_use list */ - unsigned long hits, misses, starving, dirty, changed; + unsigned used; /* number of elements currently on in_use list */ + unsigned long hits, misses, starving, locked, changed; /* see below: flag-bits for lru_cache */ unsigned long flags; - /* when changing the label of an index element */ - unsigned int new_number; - - /* for paranoia when changing the label of an index element */ - struct lc_element *changing_element; void *lc_private; const char *name; @@ -221,10 +225,15 @@ enum { /* debugging aid, to catch concurrent access early. * user needs to guarantee exclusive access by proper locking! */ __LC_PARANOIA, - /* if we need to change the set, but currently there is a changing - * transaction pending, we are "dirty", and must deferr further - * changing requests */ + + /* annotate that the set is "dirty", possibly accumulating further + * changes, until a transaction is finally triggered */ __LC_DIRTY, + + /* Locked, no further changes allowed. + * Also used to serialize changing transactions. */ + __LC_LOCKED, + /* if we need to change the set, but currently there is no free nor * unused element available, we are "starving", and must not give out * further references, to guarantee that eventually some refcnt will @@ -236,9 +245,11 @@ enum { }; #define LC_PARANOIA (1<<__LC_PARANOIA) #define LC_DIRTY (1<<__LC_DIRTY) +#define LC_LOCKED (1<<__LC_LOCKED) #define LC_STARVING (1<<__LC_STARVING) extern struct lru_cache *lc_create(const char *name, struct kmem_cache *cache, + unsigned max_pending_changes, unsigned e_count, size_t e_size, size_t e_off); extern void lc_reset(struct lru_cache *lc); extern void lc_destroy(struct lru_cache *lc); @@ -249,7 +260,7 @@ extern struct lc_element *lc_try_get(struct lru_cache *lc, unsigned int enr); extern struct lc_element *lc_find(struct lru_cache *lc, unsigned int enr); extern struct lc_element *lc_get(struct lru_cache *lc, unsigned int enr); extern unsigned int lc_put(struct lru_cache *lc, struct lc_element *e); -extern void lc_changed(struct lru_cache *lc, struct lc_element *e); +extern void lc_committed(struct lru_cache *lc); struct seq_file; extern size_t lc_seq_printf_stats(struct seq_file *seq, struct lru_cache *lc); @@ -258,31 +269,40 @@ extern void lc_seq_dump_details(struct seq_file *seq, struct lru_cache *lc, char void (*detail) (struct seq_file *, struct lc_element *)); /** - * lc_try_lock - can be used to stop lc_get() from changing the tracked set + * lc_try_lock_for_transaction - can be used to stop lc_get() from changing the tracked set * @lc: the lru cache to operate on * - * Note that the reference counts and order on the active and lru lists may - * still change. Returns true if we acquired the lock. + * Allows (expects) the set to be "dirty". Note that the reference counts and + * order on the active and lru lists may still change. Used to serialize + * changing transactions. Returns true if we aquired the lock. */ -static inline int lc_try_lock(struct lru_cache *lc) +static inline int lc_try_lock_for_transaction(struct lru_cache *lc) { - return !test_and_set_bit(__LC_DIRTY, &lc->flags); + return !test_and_set_bit(__LC_LOCKED, &lc->flags); } +/** + * lc_try_lock - variant to stop lc_get() from changing the tracked set + * @lc: the lru cache to operate on + * + * Note that the reference counts and order on the active and lru lists may + * still change. Only works on a "clean" set. Returns true if we aquired the + * lock, which means there are no pending changes, and any further attempt to + * change the set will not succeed until the next lc_unlock(). + */ +extern int lc_try_lock(struct lru_cache *lc); + /** * lc_unlock - unlock @lc, allow lc_get() to change the set again * @lc: the lru cache to operate on */ static inline void lc_unlock(struct lru_cache *lc) { - clear_bit_unlock(__LC_DIRTY, &lc->flags); + clear_bit(__LC_DIRTY, &lc->flags); + clear_bit_unlock(__LC_LOCKED, &lc->flags); } -static inline int lc_is_used(struct lru_cache *lc, unsigned int enr) -{ - struct lc_element *e = lc_find(lc, enr); - return e && e->refcnt; -} +extern bool lc_is_used(struct lru_cache *lc, unsigned int enr); #define lc_entry(ptr, type, member) \ container_of(ptr, type, member) -- cgit v1.2.3 From 7ad651b52218eea3f9280dbb353dfe0c42742d85 Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Mon, 21 Feb 2011 13:21:03 +0100 Subject: drbd: new on-disk activity log transaction format Use a new on-disk transaction format for the activity log, which allows for multiple changes to the active set per transaction. Using 4k transaction blocks, we can now get rid of the work-around code to deal with devices not supporting 512 byte logical block size. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 4 ++++ include/linux/drbd_limits.h | 8 +++++--- 2 files changed, 9 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 35fc08a0a552..70a688b92c1b 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -336,6 +336,10 @@ enum drbd_timeout_flag { #define DRBD_MAGIC 0x83740267 #define DRBD_MAGIC_BIG 0x835a +/* how I came up with this magic? + * base64 decode "actlog==" ;) */ +#define DRBD_AL_MAGIC 0x69cb65a2 + /* these are of type "int" */ #define DRBD_MD_INDEX_INTERNAL -1 #define DRBD_MD_INDEX_FLEX_EXT -2 diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 447c36752385..75f05af33725 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -102,10 +102,12 @@ #define DRBD_RATE_DEF 250 /* kb/second */ /* less than 7 would hit performance unnecessarily. - * 3833 is the largest prime that still does fit - * into 64 sectors of activity log */ + * 919 slots context information per transaction, + * 32k activity log, 4k transaction size, + * one transaction in flight: + * 919 * 7 = 6433 */ #define DRBD_AL_EXTENTS_MIN 7 -#define DRBD_AL_EXTENTS_MAX 3833 +#define DRBD_AL_EXTENTS_MAX 6433 #define DRBD_AL_EXTENTS_DEF 127 #define DRBD_AFTER_MIN -1 -- cgit v1.2.3 From 1aba4d7fcfabe999e0c99683b394aa76d5c42842 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Mon, 21 Feb 2011 15:38:08 +0100 Subject: drbd: Preparing the connector interface to operator on connections Up to now it only operated on minor numbers. Now it can work also on named connections. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 70a688b92c1b..7683b4ab6583 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -155,6 +155,7 @@ enum drbd_ret_code { ERR_CONG_NOT_PROTO_A = 155, ERR_PIC_AFTER_DEP = 156, ERR_PIC_PEER_DEP = 157, + ERR_CONN_NOT_KNOWN = 158, /* insert new ones above this line */ AFTER_LAST_ERR_CODE @@ -347,8 +348,11 @@ enum drbd_timeout_flag { /* Start of the new netlink/connector stuff */ -#define DRBD_NL_CREATE_DEVICE 0x01 -#define DRBD_NL_SET_DEFAULTS 0x02 +enum drbd_ncr_flags { + DRBD_NL_CREATE_DEVICE = 0x01, + DRBD_NL_SET_DEFAULTS = 0x02, +}; +#define DRBD_NL_OBJ_NAME_LEN 32 /* For searching a vacant cn_idx value */ @@ -356,8 +360,15 @@ enum drbd_timeout_flag { struct drbd_nl_cfg_req { int packet_type; - unsigned int drbd_minor; - int flags; + union { + struct { + unsigned int drbd_minor; + enum drbd_ncr_flags flags; + }; + struct { + char obj_name[DRBD_NL_OBJ_NAME_LEN]; + }; + }; unsigned short tag_list[]; }; -- cgit v1.2.3 From 774b305518a68a50df4f479bcf79da2add724e6e Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Tue, 22 Feb 2011 02:07:03 -0500 Subject: drbd: Implemented new commands to create/delete connections/minors Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 3 +++ include/linux/drbd_nl.h | 12 ++++++++++++ 2 files changed, 15 insertions(+) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 7683b4ab6583..e192167e6145 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -156,6 +156,9 @@ enum drbd_ret_code { ERR_PIC_AFTER_DEP = 156, ERR_PIC_PEER_DEP = 157, ERR_CONN_NOT_KNOWN = 158, + ERR_CONN_IN_USE = 159, + ERR_MINOR_CONFIGURED = 160, + ERR_MINOR_EXISTS = 161, /* insert new ones above this line */ AFTER_LAST_ERR_CODE diff --git a/include/linux/drbd_nl.h b/include/linux/drbd_nl.h index ab6159e4fcf0..1216c7a432c5 100644 --- a/include/linux/drbd_nl.h +++ b/include/linux/drbd_nl.h @@ -152,6 +152,18 @@ NL_PACKET(new_c_uuid, 26, NL_RESPONSE(return_code_only, 27) #endif +NL_PACKET(new_connection, 28, /* CHT_CTOR */ + NL_STRING( 85, T_MANDATORY, name, DRBD_NL_OBJ_NAME_LEN) +) + +NL_PACKET(new_minor, 29, /* CHT_CONN */ + NL_INTEGER( 86, T_MANDATORY, minor) + NL_INTEGER( 87, T_MANDATORY, vol_nr) +) + +NL_PACKET(del_minor, 30, ) /* CHT_MINOR */ +NL_PACKET(del_connection, 31, ) /* CHT_CONN */ + #undef NL_PACKET #undef NL_INTEGER #undef NL_INT64 -- cgit v1.2.3 From a5df0e199cf6b31400fa86f6c3f73fa6e127e9ed Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Wed, 23 Feb 2011 12:51:43 +0100 Subject: drbd: default to detach on-io-error Old default behaviour was "pass-on", which is not useful in production at all. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_limits.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 75f05af33725..22920a8af4e2 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -125,7 +125,7 @@ #define DRBD_DISK_SIZE_SECT_MAX (1 * (2LLU << 40)) #define DRBD_DISK_SIZE_SECT_DEF 0 /* = disabled = no user size... */ -#define DRBD_ON_IO_ERROR_DEF EP_PASS_ON +#define DRBD_ON_IO_ERROR_DEF EP_DETACH #define DRBD_FENCING_DEF FP_DONT_CARE #define DRBD_AFTER_SB_0P_DEF ASB_DISCONNECT #define DRBD_AFTER_SB_1P_DEF ASB_DISCONNECT -- cgit v1.2.3 From ec2c35ac1ea288f5c931e32452ecea50068e8450 Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Mon, 7 Mar 2011 10:20:08 +0100 Subject: drbd: prepare the transition from connector to genetlink This adds the new API header and helper files. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 349 +++++++++++++++++++++++++++++++ include/linux/drbd_genl_api.h | 55 +++++ include/linux/genl_magic_func.h | 417 ++++++++++++++++++++++++++++++++++++++ include/linux/genl_magic_struct.h | 260 ++++++++++++++++++++++++ 4 files changed, 1081 insertions(+) create mode 100644 include/linux/drbd_genl.h create mode 100644 include/linux/drbd_genl_api.h create mode 100644 include/linux/genl_magic_func.h create mode 100644 include/linux/genl_magic_struct.h (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h new file mode 100644 index 000000000000..84e16848f7a1 --- /dev/null +++ b/include/linux/drbd_genl.h @@ -0,0 +1,349 @@ +/* + * General overview: + * full generic netlink message: + * |nlmsghdr|genlmsghdr| + * + * payload: + * |optional fixed size family header| + * + * sequence of netlink attributes: + * I chose to have all "top level" attributes NLA_NESTED, + * corresponding to some real struct. + * So we have a sequence of |tla, len| + * + * nested nla sequence: + * may be empty, or contain a sequence of netlink attributes + * representing the struct fields. + * + * The tag number of any field (regardless of containing struct) + * will be available as T_ ## field_name, + * so you cannot have the same field name in two differnt structs. + * + * The tag numbers themselves are per struct, though, + * so should always begin at 1 (not 0, that is the special "NLA_UNSPEC" type, + * which we won't use here). + * The tag numbers are used as index in the respective nla_policy array. + * + * GENL_struct(tag_name, tag_number, struct name, struct fields) - struct and policy + * genl_magic_struct.h + * generates the struct declaration, + * generates an entry in the tla enum, + * genl_magic_func.h + * generates an entry in the static tla policy + * with .type = NLA_NESTED + * generates the static _nl_policy definition, + * and static conversion functions + * + * genl_magic_func.h + * + * GENL_mc_group(group) + * genl_magic_struct.h + * does nothing + * genl_magic_func.h + * defines and registers the mcast group, + * and provides a send helper + * + * GENL_notification(op_name, op_num, mcast_group, tla list) + * These are notifications to userspace. + * + * genl_magic_struct.h + * generates an entry in the genl_ops enum, + * genl_magic_func.h + * does nothing + * + * mcast group: the name of the mcast group this notification should be + * expected on + * tla list: the list of expected top level attributes, + * for documentation and sanity checking. + * + * GENL_op(op_name, op_num, flags and handler, tla list) - "genl operations" + * These are requests from userspace. + * + * _op and _notification share the same "number space", + * op_nr will be assigned to "genlmsghdr->cmd" + * + * genl_magic_struct.h + * generates an entry in the genl_ops enum, + * genl_magic_func.h + * generates an entry in the static genl_ops array, + * and static register/unregister functions to + * genl_register_family_with_ops(). + * + * flags and handler: + * GENL_op_init( .doit = x, .dumpit = y, .flags = something) + * GENL_doit(x) => .dumpit = NULL, .flags = GENL_ADMIN_PERM + * tla list: the list of expected top level attributes, + * for documentation and sanity checking. + */ + +/* + * STRUCTS + */ + +/* this is sent kernel -> userland on various error conditions, and contains + * informational textual info, which is supposedly human readable. + * The computer relevant return code is in the drbd_genlmsghdr. + */ +GENL_struct(DRBD_NLA_CFG_REPLY, 1, drbd_cfg_reply, + /* "arbitrary" size strings, nla_policy.len = 0 */ + __str_field(1, GENLA_F_MANDATORY, info_text, 0) +) + +/* Configuration requests typically need a context to operate on. + * Possible keys are device minor (fits in the drbd_genlmsghdr), + * the replication link (aka connection) name, + * and/or the replication group (aka resource) name, + * and the volume id within the resource. */ +GENL_struct(DRBD_NLA_CFG_CONTEXT, 2, drbd_cfg_context, + /* currently only 256 volumes per group, + * but maybe we still change that */ + __u32_field(1, GENLA_F_MANDATORY, ctx_volume) + __str_field(2, GENLA_F_MANDATORY, ctx_conn_name, 128) +) + +GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, + __u64_field(1, GENLA_F_MANDATORY, disk_size) + __str_field(2, GENLA_F_REQUIRED, backing_dev, 128) + __str_field(3, GENLA_F_REQUIRED, meta_dev, 128) + __u32_field(4, GENLA_F_REQUIRED, meta_dev_idx) + __u32_field(5, GENLA_F_MANDATORY, max_bio_bvecs) + __u32_field(6, GENLA_F_MANDATORY, on_io_error) + __u32_field(7, GENLA_F_MANDATORY, fencing) + __flg_field(8, GENLA_F_MANDATORY, no_disk_barrier) + __flg_field(9, GENLA_F_MANDATORY, no_disk_flush) + __flg_field(10, GENLA_F_MANDATORY, no_disk_drain) + __flg_field(11, GENLA_F_MANDATORY, no_md_flush) + __flg_field(12, GENLA_F_MANDATORY, use_bmbv) +) + +GENL_struct(DRBD_NLA_SYNCER_CONF, 4, syncer_conf, + __u32_field(1, GENLA_F_MANDATORY, rate) + __u32_field(2, GENLA_F_MANDATORY, after) + __u32_field(3, GENLA_F_MANDATORY, al_extents) + __str_field(4, GENLA_F_MANDATORY, cpu_mask, 32) + __str_field(5, GENLA_F_MANDATORY, verify_alg, SHARED_SECRET_MAX) + __str_field(6, GENLA_F_MANDATORY, csums_alg, SHARED_SECRET_MAX) + __flg_field(7, GENLA_F_MANDATORY, use_rle) + __u32_field(8, GENLA_F_MANDATORY, on_no_data) + __u32_field(9, GENLA_F_MANDATORY, c_plan_ahead) + __u32_field(10, GENLA_F_MANDATORY, c_delay_target) + __u32_field(11, GENLA_F_MANDATORY, c_fill_target) + __u32_field(12, GENLA_F_MANDATORY, c_max_rate) + __u32_field(13, GENLA_F_MANDATORY, c_min_rate) +) + +GENL_struct(DRBD_NLA_NET_CONF, 5, net_conf, + __str_field(1, GENLA_F_MANDATORY | GENLA_F_SENSITIVE, + shared_secret, SHARED_SECRET_MAX) + __str_field(2, GENLA_F_MANDATORY, cram_hmac_alg, SHARED_SECRET_MAX) + __str_field(3, GENLA_F_MANDATORY, integrity_alg, SHARED_SECRET_MAX) + __str_field(4, GENLA_F_REQUIRED, my_addr, 128) + __str_field(5, GENLA_F_REQUIRED, peer_addr, 128) + __u32_field(6, GENLA_F_REQUIRED, wire_protocol) + __u32_field(7, GENLA_F_MANDATORY, try_connect_int) + __u32_field(8, GENLA_F_MANDATORY, timeout) + __u32_field(9, GENLA_F_MANDATORY, ping_int) + __u32_field(10, GENLA_F_MANDATORY, ping_timeo) + __u32_field(11, GENLA_F_MANDATORY, sndbuf_size) + __u32_field(12, GENLA_F_MANDATORY, rcvbuf_size) + __u32_field(13, GENLA_F_MANDATORY, ko_count) + __u32_field(14, GENLA_F_MANDATORY, max_buffers) + __u32_field(15, GENLA_F_MANDATORY, max_epoch_size) + __u32_field(16, GENLA_F_MANDATORY, unplug_watermark) + __u32_field(17, GENLA_F_MANDATORY, after_sb_0p) + __u32_field(18, GENLA_F_MANDATORY, after_sb_1p) + __u32_field(19, GENLA_F_MANDATORY, after_sb_2p) + __u32_field(20, GENLA_F_MANDATORY, rr_conflict) + __u32_field(21, GENLA_F_MANDATORY, on_congestion) + __u32_field(22, GENLA_F_MANDATORY, cong_fill) + __u32_field(23, GENLA_F_MANDATORY, cong_extents) + __flg_field(24, GENLA_F_MANDATORY, two_primaries) + __flg_field(25, GENLA_F_MANDATORY, want_lose) + __flg_field(26, GENLA_F_MANDATORY, no_cork) + __flg_field(27, GENLA_F_MANDATORY, always_asbp) + __flg_field(28, GENLA_F_MANDATORY, dry_run) +) + +GENL_struct(DRBD_NLA_SET_ROLE_PARMS, 6, set_role_parms, + __flg_field(1, GENLA_F_MANDATORY, assume_uptodate) +) + +GENL_struct(DRBD_NLA_RESIZE_PARMS, 7, resize_parms, + __u64_field(1, GENLA_F_MANDATORY, resize_size) + __flg_field(2, GENLA_F_MANDATORY, resize_force) + __flg_field(3, GENLA_F_MANDATORY, no_resync) +) + +GENL_struct(DRBD_NLA_STATE_INFO, 8, state_info, + /* the reason of the broadcast, + * if this is an event triggered broadcast. */ + __u32_field(1, GENLA_F_MANDATORY, sib_reason) + __u32_field(2, GENLA_F_REQUIRED, current_state) + __u64_field(3, GENLA_F_MANDATORY, capacity) + __u64_field(4, GENLA_F_MANDATORY, ed_uuid) + + /* These are for broadcast from after state change work. + * prev_state and new_state are from the moment the state change took + * place, new_state is not neccessarily the same as current_state, + * there may have been more state changes since. Which will be + * broadcasted soon, in their respective after state change work. */ + __u32_field(5, GENLA_F_MANDATORY, prev_state) + __u32_field(6, GENLA_F_MANDATORY, new_state) + + /* if we have a local disk: */ + __bin_field(7, GENLA_F_MANDATORY, uuids, (UI_SIZE*sizeof(__u64))) + __u32_field(8, GENLA_F_MANDATORY, disk_flags) + __u64_field(9, GENLA_F_MANDATORY, bits_total) + __u64_field(10, GENLA_F_MANDATORY, bits_oos) + /* and in case resync or online verify is active */ + __u64_field(11, GENLA_F_MANDATORY, bits_rs_total) + __u64_field(12, GENLA_F_MANDATORY, bits_rs_failed) + + /* for pre and post notifications of helper execution */ + __str_field(13, GENLA_F_MANDATORY, helper, 32) + __u32_field(14, GENLA_F_MANDATORY, helper_exit_code) +) + +GENL_struct(DRBD_NLA_START_OV_PARMS, 9, start_ov_parms, + __u64_field(1, GENLA_F_MANDATORY, ov_start_sector) +) + +GENL_struct(DRBD_NLA_NEW_C_UUID_PARMS, 10, new_c_uuid_parms, + __flg_field(1, GENLA_F_MANDATORY, clear_bm) +) + +GENL_struct(DRBD_NLA_TIMEOUT_PARMS, 11, timeout_parms, + __u32_field(1, GENLA_F_REQUIRED, timeout_type) +) + +GENL_struct(DRBD_NLA_DISCONNECT_PARMS, 12, disconnect_parms, + __flg_field(1, GENLA_F_MANDATORY, force_disconnect) +) + +/* + * Notifications and commands (genlmsghdr->cmd) + */ +GENL_mc_group(events) + + /* kernel -> userspace announcement of changes */ +GENL_notification( + DRBD_EVENT, 1, events, + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_STATE_INFO, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_NET_CONF, GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_DISK_CONF, GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_SYNCER_CONF, GENLA_F_MANDATORY) +) + + /* query kernel for specific or all info */ +GENL_op( + DRBD_ADM_GET_STATUS, 2, + GENL_op_init( + .doit = drbd_adm_get_status, + .dumpit = drbd_adm_get_status_all, + /* anyone may ask for the status, + * it is broadcasted anyways */ + ), + /* To select the object .doit. + * Or a subset of objects in .dumpit. */ + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_MANDATORY) +) + +#if 0 + /* TO BE DONE */ + /* create or destroy resources, aka replication groups */ +GENL_op(DRBD_ADM_CREATE_RESOURCE, 3, GENL_doit(drbd_adm_create_resource), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) +GENL_op(DRBD_ADM_DELETE_RESOURCE, 4, GENL_doit(drbd_adm_delete_resource), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) +#endif + + /* add DRBD minor devices as volumes to resources */ +GENL_op(DRBD_ADM_ADD_MINOR, 5, GENL_doit(drbd_adm_add_minor), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) +GENL_op(DRBD_ADM_DEL_MINOR, 6, GENL_doit(drbd_adm_delete_minor), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + + /* add or delete replication links to resources */ +GENL_op(DRBD_ADM_ADD_LINK, 7, GENL_doit(drbd_adm_create_connection), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) +GENL_op(DRBD_ADM_DEL_LINK, 8, GENL_doit(drbd_adm_delete_connection), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + + /* operates on replication links */ +GENL_op(DRBD_ADM_SYNCER, 9, + GENL_doit(drbd_adm_syncer), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_SYNCER_CONF, GENLA_F_MANDATORY) +) + +GENL_op( + DRBD_ADM_CONNECT, 10, + GENL_doit(drbd_adm_connect), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_NET_CONF, GENLA_F_REQUIRED) +) + +GENL_op(DRBD_ADM_DISCONNECT, 11, GENL_doit(drbd_adm_disconnect), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + + /* operates on minors */ +GENL_op(DRBD_ADM_ATTACH, 12, + GENL_doit(drbd_adm_attach), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_DISK_CONF, GENLA_F_REQUIRED) +) + +GENL_op( + DRBD_ADM_RESIZE, 13, + GENL_doit(drbd_adm_resize), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_RESIZE_PARMS, GENLA_F_MANDATORY) +) + + /* operates on all volumes within a resource */ +GENL_op( + DRBD_ADM_PRIMARY, 14, + GENL_doit(drbd_adm_set_role), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_SET_ROLE_PARMS, GENLA_F_REQUIRED) +) + +GENL_op( + DRBD_ADM_SECONDARY, 15, + GENL_doit(drbd_adm_set_role), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_SET_ROLE_PARMS, GENLA_F_REQUIRED) +) + +GENL_op( + DRBD_ADM_NEW_C_UUID, 16, + GENL_doit(drbd_adm_new_c_uuid), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_NEW_C_UUID_PARMS, GENLA_F_MANDATORY) +) + +GENL_op( + DRBD_ADM_START_OV, 17, + GENL_doit(drbd_adm_start_ov), + GENL_tla_expected(DRBD_NLA_START_OV_PARMS, GENLA_F_MANDATORY) +) + +GENL_op(DRBD_ADM_DETACH, 18, GENL_doit(drbd_adm_detach), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) +GENL_op(DRBD_ADM_INVALIDATE, 19, GENL_doit(drbd_adm_invalidate), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) +GENL_op(DRBD_ADM_INVAL_PEER, 20, GENL_doit(drbd_adm_invalidate_peer), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) +GENL_op(DRBD_ADM_PAUSE_SYNC, 21, GENL_doit(drbd_adm_pause_sync), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) +GENL_op(DRBD_ADM_RESUME_SYNC, 22, GENL_doit(drbd_adm_resume_sync), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) +GENL_op(DRBD_ADM_SUSPEND_IO, 23, GENL_doit(drbd_adm_suspend_io), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) +GENL_op(DRBD_ADM_RESUME_IO, 24, GENL_doit(drbd_adm_resume_io), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) +GENL_op(DRBD_ADM_OUTDATE, 25, GENL_doit(drbd_adm_outdate), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) +GENL_op(DRBD_ADM_GET_TIMEOUT_TYPE, 26, GENL_doit(drbd_adm_get_timeout_type), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) diff --git a/include/linux/drbd_genl_api.h b/include/linux/drbd_genl_api.h new file mode 100644 index 000000000000..9ef50d51e34e --- /dev/null +++ b/include/linux/drbd_genl_api.h @@ -0,0 +1,55 @@ +#ifndef DRBD_GENL_STRUCT_H +#define DRBD_GENL_STRUCT_H + +/** + * struct drbd_genlmsghdr - DRBD specific header used in NETLINK_GENERIC requests + * @minor: + * For admin requests (user -> kernel): which minor device to operate on. + * For (unicast) replies or informational (broadcast) messages + * (kernel -> user): which minor device the information is about. + * If we do not operate on minors, but on connections or resources, + * the minor value shall be (~0), and the attribute DRBD_NLA_CFG_CONTEXT + * is used instead. + * @flags: possible operation modifiers (relevant only for user->kernel): + * DRBD_GENL_F_SET_DEFAULTS + * @volume: + * When creating a new minor (adding it to a resource), the resource needs + * to know which volume number within the resource this is supposed to be. + * The volume number corresponds to the same volume number on the remote side, + * whereas the minor number on the remote side may be different + * (union with flags). + * @ret_code: kernel->userland unicast cfg reply return code (union with flags); + */ +struct drbd_genlmsghdr { + __u32 minor; + union { + __u32 flags; + __s32 ret_code; + }; +}; + +/* To be used in drbd_genlmsghdr.flags */ +enum { + DRBD_GENL_F_SET_DEFAULTS = 1, +}; + +enum drbd_state_info_bcast_reason { + SIB_GET_STATUS_REPLY = 1, + SIB_STATE_CHANGE = 2, + SIB_HELPER_PRE = 3, + SIB_HELPER_POST = 4, + SIB_SYNC_PROGRESS = 5, +}; + +/* hack around predefined gcc/cpp "linux=1", + * we cannot possibly include <1/drbd_genl.h> */ +#undef linux + +#include +#define GENL_MAGIC_VERSION API_VERSION +#define GENL_MAGIC_FAMILY drbd +#define GENL_MAGIC_FAMILY_HDRSZ sizeof(struct drbd_genlmsghdr) +#define GENL_MAGIC_INCLUDE_FILE +#include + +#endif diff --git a/include/linux/genl_magic_func.h b/include/linux/genl_magic_func.h new file mode 100644 index 000000000000..8a86f659d363 --- /dev/null +++ b/include/linux/genl_magic_func.h @@ -0,0 +1,417 @@ +#ifndef GENL_MAGIC_FUNC_H +#define GENL_MAGIC_FUNC_H + +#include + +/* + * Extension of genl attribute validation policies {{{1 + * {{{2 + */ + +/** + * nla_is_required - return true if this attribute is required + * @nla: netlink attribute + */ +static inline int nla_is_required(const struct nlattr *nla) +{ + return nla->nla_type & GENLA_F_REQUIRED; +} + +/** + * nla_is_mandatory - return true if understanding this attribute is mandatory + * @nla: netlink attribute + * Note: REQUIRED attributes are implicitly MANDATORY as well + */ +static inline int nla_is_mandatory(const struct nlattr *nla) +{ + return nla->nla_type & (GENLA_F_MANDATORY | GENLA_F_REQUIRED); +} + +/* Functionality to be integrated into nla_parse(), and validate_nla(), + * respectively. + * + * Enforcing the "mandatory" bit is done here, + * by rejecting unknown mandatory attributes. + * + * Part of enforcing the "required" flag would mean to embed it into + * nla_policy.type, and extending validate_nla(), which currently does + * BUG_ON(pt->type > NLA_TYPE_MAX); we have to work on existing kernels, + * so we cannot do that. Thats why enforcing "required" is done in the + * generated assignment functions below. */ +static int nla_check_unknown(int maxtype, struct nlattr *head, int len) +{ + struct nlattr *nla; + int rem; + nla_for_each_attr(nla, head, len, rem) { + __u16 type = nla_type(nla); + if (type > maxtype && nla_is_mandatory(nla)) + return -EOPNOTSUPP; + } + return 0; +} + +/* + * Magic: declare tla policy {{{1 + * Magic: declare nested policies + * {{{2 + */ +#undef GENL_mc_group +#define GENL_mc_group(group) + +#undef GENL_notification +#define GENL_notification(op_name, op_num, mcast_group, tla_list) + +#undef GENL_op +#define GENL_op(op_name, op_num, handler, tla_list) + +#undef GENL_struct +#define GENL_struct(tag_name, tag_number, s_name, s_fields) \ + [tag_name] = { .type = NLA_NESTED }, + +static struct nla_policy CONCAT_(GENL_MAGIC_FAMILY, _tla_nl_policy)[] = { +#include GENL_MAGIC_INCLUDE_FILE +}; + +#undef GENL_struct +#define GENL_struct(tag_name, tag_number, s_name, s_fields) \ +static struct nla_policy s_name ## _nl_policy[] __read_mostly = \ +{ s_fields }; + +#undef __field +#define __field(attr_nr, attr_flag, name, nla_type, _type, __get, __put) \ + [__nla_type(attr_nr)] = { .type = nla_type }, + +#undef __array +#define __array(attr_nr, attr_flag, name, nla_type, _type, maxlen, \ + __get, __put) \ + [__nla_type(attr_nr)] = { .type = nla_type, \ + .len = maxlen - (nla_type == NLA_NUL_STRING) }, + +#include GENL_MAGIC_INCLUDE_FILE + +#ifndef __KERNEL__ +#ifndef pr_info +#define pr_info(args...) fprintf(stderr, args); +#endif +#endif + +#if 1 +static void dprint_field(const char *dir, int nla_type, + const char *name, void *valp) +{ + __u64 val = valp ? *(__u32 *)valp : 1; + switch (nla_type) { + case NLA_U8: val = (__u8)val; + case NLA_U16: val = (__u16)val; + case NLA_U32: val = (__u32)val; + pr_info("%s attr %s: %d 0x%08x\n", dir, + name, (int)val, (unsigned)val); + break; + case NLA_U64: + val = *(__u64*)valp; + pr_info("%s attr %s: %lld 0x%08llx\n", dir, + name, (long long)val, (unsigned long long)val); + break; + case NLA_FLAG: + if (val) + pr_info("%s attr %s: set\n", dir, name); + break; + } +} + +static void dprint_array(const char *dir, int nla_type, + const char *name, const char *val, unsigned len) +{ + switch (nla_type) { + case NLA_NUL_STRING: + if (len && val[len-1] == '\0') + len--; + pr_info("%s attr %s: [len:%u] '%s'\n", dir, name, len, val); + break; + default: + /* we can always show 4 byte, + * thats what nlattr are aligned to. */ + pr_info("%s attr %s: [len:%u] %02x%02x%02x%02x ...\n", + dir, name, len, val[0], val[1], val[2], val[3]); + } +} + +#define DPRINT_TLA(a, op, b) pr_info("%s %s %s\n", a, op, b); + +/* Name is a member field name of the struct s. + * If s is NULL (only parsing, no copy requested in *_from_attrs()), + * nla is supposed to point to the attribute containing the information + * corresponding to that struct member. */ +#define DPRINT_FIELD(dir, nla_type, name, s, nla) \ + do { \ + if (s) \ + dprint_field(dir, nla_type, #name, &s->name); \ + else if (nla) \ + dprint_field(dir, nla_type, #name, \ + (nla_type == NLA_FLAG) ? NULL \ + : nla_data(nla)); \ + } while (0) + +#define DPRINT_ARRAY(dir, nla_type, name, s, nla) \ + do { \ + if (s) \ + dprint_array(dir, nla_type, #name, \ + s->name, s->name ## _len); \ + else if (nla) \ + dprint_array(dir, nla_type, #name, \ + nla_data(nla), nla_len(nla)); \ + } while (0) +#else +#define DPRINT_TLA(a, op, b) do {} while (0) +#define DPRINT_FIELD(dir, nla_type, name, s, nla) do {} while (0) +#define DPRINT_ARRAY(dir, nla_type, name, s, nla) do {} while (0) +#endif + +/* + * Magic: provide conversion functions {{{1 + * populate struct from attribute table: + * {{{2 + */ + +/* processing of generic netlink messages is serialized. + * use one static buffer for parsing of nested attributes */ +static struct nlattr *nested_attr_tb[128]; + +#ifndef BUILD_BUG_ON +/* Force a compilation error if condition is true */ +#define BUILD_BUG_ON(condition) ((void)BUILD_BUG_ON_ZERO(condition)) +/* Force a compilation error if condition is true, but also produce a + result (of value 0 and type size_t), so the expression can be used + e.g. in a structure initializer (or where-ever else comma expressions + aren't permitted). */ +#define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); })) +#define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); })) +#endif + +#undef GENL_struct +#define GENL_struct(tag_name, tag_number, s_name, s_fields) \ + /* static, potentially unused */ \ +int s_name ## _from_attrs(struct s_name *s, struct nlattr *tb[]) \ +{ \ + const int maxtype = ARRAY_SIZE(s_name ## _nl_policy)-1; \ + struct nlattr *tla = tb[tag_number]; \ + struct nlattr **ntb = nested_attr_tb; \ + struct nlattr *nla; \ + int err; \ + BUILD_BUG_ON(ARRAY_SIZE(s_name ## _nl_policy) > ARRAY_SIZE(nested_attr_tb)); \ + if (!tla) \ + return -ENOMSG; \ + DPRINT_TLA(#s_name, "<=-", #tag_name); \ + err = nla_parse_nested(ntb, maxtype, tla, s_name ## _nl_policy); \ + if (err) \ + return err; \ + err = nla_check_unknown(maxtype, nla_data(tla), nla_len(tla)); \ + if (err) \ + return err; \ + \ + s_fields \ + return 0; \ +} + +#undef __field +#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put) \ + nla = ntb[__nla_type(attr_nr)]; \ + if (nla) { \ + if (s) \ + s->name = __get(nla); \ + DPRINT_FIELD("<<", nla_type, name, s, nla); \ + } else if ((attr_flag) & GENLA_F_REQUIRED) { \ + pr_info("<< missing attr: %s\n", #name); \ + return -ENOMSG; \ + } + +/* validate_nla() already checked nla_len <= maxlen appropriately. */ +#undef __array +#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, __get, __put) \ + nla = ntb[__nla_type(attr_nr)]; \ + if (nla) { \ + if (s) \ + s->name ## _len = \ + __get(s->name, nla, maxlen); \ + DPRINT_ARRAY("<<", nla_type, name, s, nla); \ + } else if ((attr_flag) & GENLA_F_REQUIRED) { \ + pr_info("<< missing attr: %s\n", #name); \ + return -ENOMSG; \ + } \ + +#include GENL_MAGIC_INCLUDE_FILE + +#undef GENL_struct +#define GENL_struct(tag_name, tag_number, s_name, s_fields) + +/* + * Magic: define op number to op name mapping {{{1 + * {{{2 + */ +const char *CONCAT_(GENL_MAGIC_FAMILY, _genl_cmd_to_str)(__u8 cmd) +{ + switch (cmd) { +#undef GENL_op +#define GENL_op(op_name, op_num, handler, tla_list) \ + case op_num: return #op_name; +#include GENL_MAGIC_INCLUDE_FILE + default: + return "unknown"; + } +} + +#ifdef __KERNEL__ +#include +/* + * Magic: define genl_ops {{{1 + * {{{2 + */ + +#undef GENL_op +#define GENL_op(op_name, op_num, handler, tla_list) \ +{ \ + handler \ + .cmd = op_name, \ + .policy = CONCAT_(GENL_MAGIC_FAMILY, _tla_nl_policy), \ +}, + +#define ZZZ_genl_ops CONCAT_(GENL_MAGIC_FAMILY, _genl_ops) +static struct genl_ops ZZZ_genl_ops[] __read_mostly = { +#include GENL_MAGIC_INCLUDE_FILE +}; + +#undef GENL_op +#define GENL_op(op_name, op_num, handler, tla_list) + +/* + * Define the genl_family, multicast groups, {{{1 + * and provide register/unregister functions. + * {{{2 + */ +#define ZZZ_genl_family CONCAT_(GENL_MAGIC_FAMILY, _genl_family) +static struct genl_family ZZZ_genl_family __read_mostly = { + .id = GENL_ID_GENERATE, + .name = __stringify(GENL_MAGIC_FAMILY), + .version = GENL_MAGIC_VERSION, +#ifdef GENL_MAGIC_FAMILY_HDRSZ + .hdrsize = NLA_ALIGN(GENL_MAGIC_FAMILY_HDRSZ), +#endif + .maxattr = ARRAY_SIZE(drbd_tla_nl_policy)-1, +}; + +/* + * Magic: define multicast groups + * Magic: define multicast group registration helper + */ +#undef GENL_mc_group +#define GENL_mc_group(group) \ +static struct genl_multicast_group \ +CONCAT_(GENL_MAGIC_FAMILY, _mcg_ ## group) __read_mostly = { \ + .name = #group, \ +}; \ +static int CONCAT_(GENL_MAGIC_FAMILY, _genl_multicast_ ## group)( \ + struct sk_buff *skb, gfp_t flags) \ +{ \ + unsigned int group_id = \ + CONCAT_(GENL_MAGIC_FAMILY, _mcg_ ## group).id; \ + if (!group_id) \ + return -EINVAL; \ + return genlmsg_multicast(skb, 0, group_id, flags); \ +} + +#include GENL_MAGIC_INCLUDE_FILE + +int CONCAT_(GENL_MAGIC_FAMILY, _genl_register)(void) +{ + int err = genl_register_family_with_ops(&ZZZ_genl_family, + ZZZ_genl_ops, ARRAY_SIZE(ZZZ_genl_ops)); + if (err) + return err; +#undef GENL_mc_group +#define GENL_mc_group(group) \ + err = genl_register_mc_group(&ZZZ_genl_family, \ + &CONCAT_(GENL_MAGIC_FAMILY, _mcg_ ## group)); \ + if (err) \ + goto fail; \ + else \ + pr_info("%s: mcg %s: %u\n", #group, \ + __stringify(GENL_MAGIC_FAMILY), \ + CONCAT_(GENL_MAGIC_FAMILY, _mcg_ ## group).id); + +#include GENL_MAGIC_INCLUDE_FILE + +#undef GENL_mc_group +#define GENL_mc_group(group) + return 0; +fail: + genl_unregister_family(&ZZZ_genl_family); + return err; +} + +void CONCAT_(GENL_MAGIC_FAMILY, _genl_unregister)(void) +{ + genl_unregister_family(&ZZZ_genl_family); +} + +/* + * Magic: provide conversion functions {{{1 + * populate skb from struct. + * {{{2 + */ + +#undef GENL_op +#define GENL_op(op_name, op_num, handler, tla_list) + +#undef GENL_struct +#define GENL_struct(tag_name, tag_number, s_name, s_fields) \ +static int s_name ## _to_skb(struct sk_buff *skb, struct s_name *s, \ + const bool exclude_sensitive) \ +{ \ + struct nlattr *tla = nla_nest_start(skb, tag_number); \ + if (!tla) \ + goto nla_put_failure; \ + DPRINT_TLA(#s_name, "-=>", #tag_name); \ + s_fields \ + nla_nest_end(skb, tla); \ + return 0; \ + \ +nla_put_failure: \ + if (tla) \ + nla_nest_cancel(skb, tla); \ + return -EMSGSIZE; \ +} \ +static inline int s_name ## _to_priv_skb(struct sk_buff *skb, \ + struct s_name *s) \ +{ \ + return s_name ## _to_skb(skb, s, 0); \ +} \ +static inline int s_name ## _to_unpriv_skb(struct sk_buff *skb, \ + struct s_name *s) \ +{ \ + return s_name ## _to_skb(skb, s, 1); \ +} + + +#undef __field +#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put) \ + if (!exclude_sensitive || !((attr_flag) & GENLA_F_SENSITIVE)) { \ + DPRINT_FIELD(">>", nla_type, name, s, NULL); \ + __put(skb, attr_nr, s->name); \ + } + +#undef __array +#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, __get, __put) \ + if (!exclude_sensitive || !((attr_flag) & GENLA_F_SENSITIVE)) { \ + DPRINT_ARRAY(">>",nla_type, name, s, NULL); \ + __put(skb, attr_nr, min_t(int, maxlen, \ + s->name ## _len + (nla_type == NLA_NUL_STRING)),\ + s->name); \ + } + +#include GENL_MAGIC_INCLUDE_FILE + +#endif /* __KERNEL__ */ + +/* }}}1 */ +#endif /* GENL_MAGIC_FUNC_H */ +/* vim: set foldmethod=marker foldlevel=1 nofoldenable : */ diff --git a/include/linux/genl_magic_struct.h b/include/linux/genl_magic_struct.h new file mode 100644 index 000000000000..745ebfd6c7e5 --- /dev/null +++ b/include/linux/genl_magic_struct.h @@ -0,0 +1,260 @@ +#ifndef GENL_MAGIC_STRUCT_H +#define GENL_MAGIC_STRUCT_H + +#ifndef GENL_MAGIC_FAMILY +# error "you need to define GENL_MAGIC_FAMILY before inclusion" +#endif + +#ifndef GENL_MAGIC_VERSION +# error "you need to define GENL_MAGIC_VERSION before inclusion" +#endif + +#ifndef GENL_MAGIC_INCLUDE_FILE +# error "you need to define GENL_MAGIC_INCLUDE_FILE before inclusion" +#endif + +#include +#include + +#define CONCAT__(a,b) a ## b +#define CONCAT_(a,b) CONCAT__(a,b) + +extern int CONCAT_(GENL_MAGIC_FAMILY, _genl_register)(void); +extern void CONCAT_(GENL_MAGIC_FAMILY, _genl_unregister)(void); + +/* + * Extension of genl attribute validation policies {{{2 + */ + +/** + * GENLA_F_FLAGS - policy type flags to ease compatible ABI evolvement + * + * @GENLA_F_REQUIRED: attribute has to be present, or message is considered invalid. + * Adding new REQUIRED attributes breaks ABI compatibility, so don't do that. + * + * @GENLA_F_MANDATORY: if present, receiver _must_ understand it. + * Without this, unknown attributes (> maxtype) are _silently_ ignored + * by validate_nla(). + * + * To be used for API extensions, so older kernel can reject requests for not + * yet implemented features, if newer userland tries to use them even though + * the genl_family version clearly indicates they are not available. + * + * @GENLA_F_MAY_IGNORE: To clearly document the fact, for good measure. + * To be used for API extensions for things that have sane defaults, + * so newer userland can still talk to older kernel, knowing it will + * silently ignore these attributes if not yet known. + * + * NOTE: These flags overload + * NLA_F_NESTED (1 << 15) + * NLA_F_NET_BYTEORDER (1 << 14) + * from linux/netlink.h, which are not useful for validate_nla(): + * NET_BYTEORDER is not used anywhere, and NESTED would be specified by setting + * .type = NLA_NESTED in the appropriate policy. + * + * See also: nla_type() + */ +enum { + GENLA_F_MAY_IGNORE = 0, + GENLA_F_MANDATORY = 1 << 14, + GENLA_F_REQUIRED = 1 << 15, + + /* This will not be present in the __u16 .nla_type, but can be + * triggered on in _to_skb, to exclude "sensitive" + * information from broadcasts, or on unpriviledged get requests. + * This is useful because genetlink multicast groups can be listened in + * on by anyone. */ + GENLA_F_SENSITIVE = 1 << 16, +}; + +#define __nla_type(x) ((__u16)((__u16)(x) & (__u16)NLA_TYPE_MASK)) + +/* }}}1 + * MAGIC + * multi-include macro expansion magic starts here + */ + +/* MAGIC helpers {{{2 */ + +/* possible field types */ +#define __flg_field(attr_nr, attr_flag, name) \ + __field(attr_nr, attr_flag, name, NLA_FLAG, char, \ + nla_get_flag, __nla_put_flag) +#define __u8_field(attr_nr, attr_flag, name) \ + __field(attr_nr, attr_flag, name, NLA_U8, unsigned char, \ + nla_get_u8, NLA_PUT_U8) +#define __u16_field(attr_nr, attr_flag, name) \ + __field(attr_nr, attr_flag, name, NLA_U16, __u16, \ + nla_get_u16, NLA_PUT_U16) +#define __u32_field(attr_nr, attr_flag, name) \ + __field(attr_nr, attr_flag, name, NLA_U32, __u32, \ + nla_get_u32, NLA_PUT_U32) +#define __u64_field(attr_nr, attr_flag, name) \ + __field(attr_nr, attr_flag, name, NLA_U64, __u64, \ + nla_get_u64, NLA_PUT_U64) +#define __str_field(attr_nr, attr_flag, name, maxlen) \ + __array(attr_nr, attr_flag, name, NLA_NUL_STRING, char, maxlen, \ + nla_strlcpy, NLA_PUT) +#define __bin_field(attr_nr, attr_flag, name, maxlen) \ + __array(attr_nr, attr_flag, name, NLA_BINARY, char, maxlen, \ + nla_memcpy, NLA_PUT) + +#define __nla_put_flag(skb, attrtype, value) \ + do { \ + if (value) \ + NLA_PUT_FLAG(skb, attrtype); \ + } while (0) + +#define GENL_op_init(args...) args +#define GENL_doit(handler) \ + .doit = handler, \ + .flags = GENL_ADMIN_PERM, +#define GENL_dumpit(handler) \ + .dumpit = handler, \ + .flags = GENL_ADMIN_PERM, + +/* }}}1 + * Magic: define the enum symbols for genl_ops + * Magic: define the enum symbols for top level attributes + * Magic: define the enum symbols for nested attributes + * {{{2 + */ + +#undef GENL_struct +#define GENL_struct(tag_name, tag_number, s_name, s_fields) + +#undef GENL_mc_group +#define GENL_mc_group(group) + +#undef GENL_notification +#define GENL_notification(op_name, op_num, mcast_group, tla_list) \ + op_name = op_num, + +#undef GENL_op +#define GENL_op(op_name, op_num, handler, tla_list) \ + op_name = op_num, + +enum { +#include GENL_MAGIC_INCLUDE_FILE +}; + +#undef GENL_notification +#define GENL_notification(op_name, op_num, mcast_group, tla_list) + +#undef GENL_op +#define GENL_op(op_name, op_num, handler, attr_list) + +#undef GENL_struct +#define GENL_struct(tag_name, tag_number, s_name, s_fields) \ + tag_name = tag_number, + +enum { +#include GENL_MAGIC_INCLUDE_FILE +}; + +#undef GENL_struct +#define GENL_struct(tag_name, tag_number, s_name, s_fields) \ +enum { \ + s_fields \ +}; + +#undef __field +#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put) \ + T_ ## name = (__u16)(attr_nr | attr_flag), + +#undef __array +#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, __get, __put) \ + T_ ## name = (__u16)(attr_nr | attr_flag), + +#include GENL_MAGIC_INCLUDE_FILE + +/* }}}1 + * Magic: compile time assert unique numbers for operations + * Magic: -"- unique numbers for top level attributes + * Magic: -"- unique numbers for nested attributes + * {{{2 + */ + +#undef GENL_struct +#define GENL_struct(tag_name, tag_number, s_name, s_fields) + +#undef GENL_op +#define GENL_op(op_name, op_num, handler, attr_list) \ + case op_name: + +#undef GENL_notification +#define GENL_notification(op_name, op_num, mcast_group, tla_list) \ + case op_name: + +static inline void ct_assert_unique_operations(void) +{ + switch (0) { +#include GENL_MAGIC_INCLUDE_FILE + ; + } +} + +#undef GENL_op +#define GENL_op(op_name, op_num, handler, attr_list) + +#undef GENL_notification +#define GENL_notification(op_name, op_num, mcast_group, tla_list) + +#undef GENL_struct +#define GENL_struct(tag_name, tag_number, s_name, s_fields) \ + case tag_number: + +static inline void ct_assert_unique_top_level_attributes(void) +{ + switch (0) { +#include GENL_MAGIC_INCLUDE_FILE + ; + } +} + +#undef GENL_struct +#define GENL_struct(tag_name, tag_number, s_name, s_fields) \ +static inline void ct_assert_unique_ ## s_name ## _attributes(void) \ +{ \ + switch (0) { \ + s_fields \ + ; \ + } \ +} + +#undef __field +#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put) \ + case attr_nr: + +#undef __array +#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, __get, __put) \ + case attr_nr: + +#include GENL_MAGIC_INCLUDE_FILE + +/* }}}1 + * Magic: declare structs + * struct { + * fields + * }; + * {{{2 + */ + +#undef GENL_struct +#define GENL_struct(tag_name, tag_number, s_name, s_fields) \ +struct s_name { s_fields }; + +#undef __field +#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put) \ + type name; + +#undef __array +#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, __get, __put) \ + type name[maxlen]; \ + __u32 name ## _len; + +#include GENL_MAGIC_INCLUDE_FILE + +/* }}}1 */ +#endif /* GENL_MAGIC_STRUCT_H */ +/* vim: set foldmethod=marker nofoldenable : */ -- cgit v1.2.3 From d4f65b5d2497b2fd9c45f06b71deb4ab084a5b66 Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 13 Sep 2012 13:06:29 +0100 Subject: KEYS: Add payload preparsing opportunity prior to key instantiate or update Give the key type the opportunity to preparse the payload prior to the instantiation and update routines being called. This is done with the provision of two new key type operations: int (*preparse)(struct key_preparsed_payload *prep); void (*free_preparse)(struct key_preparsed_payload *prep); If the first operation is present, then it is called before key creation (in the add/update case) or before the key semaphore is taken (in the update and instantiate cases). The second operation is called to clean up if the first was called. preparse() is given the opportunity to fill in the following structure: struct key_preparsed_payload { char *description; void *type_data[2]; void *payload; const void *data; size_t datalen; size_t quotalen; }; Before the preparser is called, the first three fields will have been cleared, the payload pointer and size will be stored in data and datalen and the default quota size from the key_type struct will be stored into quotalen. The preparser may parse the payload in any way it likes and may store data in the type_data[] and payload fields for use by the instantiate() and update() ops. The preparser may also propose a description for the key by attaching it as a string to the description field. This can be used by passing a NULL or "" description to the add_key() system call or the key_create_or_update() function. This cannot work with request_key() as that required the description to tell the upcall about the key to be created. This, for example permits keys that store PGP public keys to generate their own name from the user ID and public key fingerprint in the key. The instantiate() and update() operations are then modified to look like this: int (*instantiate)(struct key *key, struct key_preparsed_payload *prep); int (*update)(struct key *key, struct key_preparsed_payload *prep); and the new payload data is passed in *prep, whether or not it was preparsed. Signed-off-by: David Howells --- include/linux/key-type.h | 35 +++++++++++++++++++++++++++++++++-- 1 file changed, 33 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/key-type.h b/include/linux/key-type.h index f0c651cda7b0..518a53afb9ea 100644 --- a/include/linux/key-type.h +++ b/include/linux/key-type.h @@ -26,6 +26,27 @@ struct key_construction { struct key *authkey;/* authorisation for key being constructed */ }; +/* + * Pre-parsed payload, used by key add, update and instantiate. + * + * This struct will be cleared and data and datalen will be set with the data + * and length parameters from the caller and quotalen will be set from + * def_datalen from the key type. Then if the preparse() op is provided by the + * key type, that will be called. Then the struct will be passed to the + * instantiate() or the update() op. + * + * If the preparse() op is given, the free_preparse() op will be called to + * clear the contents. + */ +struct key_preparsed_payload { + char *description; /* Proposed key description (or NULL) */ + void *type_data[2]; /* Private key-type data */ + void *payload; /* Proposed payload */ + const void *data; /* Raw data */ + size_t datalen; /* Raw datalen */ + size_t quotalen; /* Quota length for proposed payload */ +}; + typedef int (*request_key_actor_t)(struct key_construction *key, const char *op, void *aux); @@ -45,18 +66,28 @@ struct key_type { /* vet a description */ int (*vet_description)(const char *description); + /* Preparse the data blob from userspace that is to be the payload, + * generating a proposed description and payload that will be handed to + * the instantiate() and update() ops. + */ + int (*preparse)(struct key_preparsed_payload *prep); + + /* Free a preparse data structure. + */ + void (*free_preparse)(struct key_preparsed_payload *prep); + /* instantiate a key of this type * - this method should call key_payload_reserve() to determine if the * user's quota will hold the payload */ - int (*instantiate)(struct key *key, const void *data, size_t datalen); + int (*instantiate)(struct key *key, struct key_preparsed_payload *prep); /* update a key of this type (optional) * - this method should call key_payload_reserve() to recalculate the * quota consumption * - the key must be locked against read when modifying */ - int (*update)(struct key *key, const void *data, size_t datalen); + int (*update)(struct key *key, struct key_preparsed_payload *prep); /* match a key against a description */ int (*match)(const struct key *key, const void *desc); -- cgit v1.2.3 From e6459606b04e6385ccd3c2060fc10f78a92c7700 Mon Sep 17 00:00:00 2001 From: "H. Peter Anvin" Date: Mon, 1 Oct 2012 00:23:52 +0200 Subject: lib: Add early cpio decoder Add a simple cpio decoder without library dependencies for the purpose of extracting components from the initramfs blob for early kernel uses. Intended consumers so far are microcode and ACPI override. Signed-off-by: H. Peter Anvin Link: http://lkml.kernel.org/r/1349043837-22659-2-git-send-email-trenn@suse.de Cc: Len Brown Cc: Fenghua Yu Signed-off-by: Thomas Renninger Signed-off-by: H. Peter Anvin --- include/linux/earlycpio.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 include/linux/earlycpio.h (limited to 'include/linux') diff --git a/include/linux/earlycpio.h b/include/linux/earlycpio.h new file mode 100644 index 000000000000..111f46d83d00 --- /dev/null +++ b/include/linux/earlycpio.h @@ -0,0 +1,17 @@ +#ifndef _LINUX_EARLYCPIO_H +#define _LINUX_EARLYCPIO_H + +#include + +#define MAX_CPIO_FILE_NAME 18 + +struct cpio_data { + void *data; + size_t size; + char name[MAX_CPIO_FILE_NAME]; +}; + +struct cpio_data find_cpio_data(const char *path, void *data, size_t len, + long *offset); + +#endif /* _LINUX_EARLYCPIO_H */ -- cgit v1.2.3 From 8e30524dcc0d0ac1a18a5cee482b9d9cde3cb332 Mon Sep 17 00:00:00 2001 From: Thomas Renninger Date: Mon, 1 Oct 2012 00:23:53 +0200 Subject: x86, acpi: Introduce x86 arch specific arch_reserve_mem_area() for e820 handling This is needed for ACPI table overriding via initrd. Beside reserving memblocks, X86 also requires to flag the memory area to E820_RESERVED or E820_ACPI in the e820 mappings to be able to io(re)map it later. Signed-off-by: Thomas Renninger Link: http://lkml.kernel.org/r/1349043837-22659-3-git-send-email-trenn@suse.de Cc: Len Brown Cc: Robert Moore Cc: Yinghai Lu Cc: Eric Piel Signed-off-by: H. Peter Anvin --- include/linux/acpi.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 4f2a76224509..946fd1ea79ff 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -426,6 +426,14 @@ void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state, acpi_status acpi_os_prepare_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control); +#if CONFIG_X86 +void arch_reserve_mem_area(acpi_physical_address addr, size_t size); +#else +static inline void arch_reserve_mem_area(acpi_physical_address addr, + size_t size) +{ +} +#endif /* CONFIG_X86 */ #else #define acpi_os_set_prepare_sleep(func, pm1a_ctrl, pm1b_ctrl) do { } while (0) #endif -- cgit v1.2.3 From 53aac44c904abbad9f474f652f099de13b5c3563 Mon Sep 17 00:00:00 2001 From: Thomas Renninger Date: Mon, 1 Oct 2012 00:23:54 +0200 Subject: ACPI: Store valid ACPI tables passed via early initrd in reserved memblock areas A later patch will compare them with ACPI tables that get loaded at boot or runtime and if criteria match, a stored one is loaded. Signed-off-by: Thomas Renninger Link: http://lkml.kernel.org/r/1349043837-22659-4-git-send-email-trenn@suse.de Cc: Len Brown Cc: Robert Moore Cc: Yinghai Lu Cc: Eric Piel Signed-off-by: H. Peter Anvin --- include/linux/acpi.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 946fd1ea79ff..d14081c10c17 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -76,6 +76,14 @@ typedef int (*acpi_table_handler) (struct acpi_table_header *table); typedef int (*acpi_table_entry_handler) (struct acpi_subtable_header *header, const unsigned long end); +#ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE +void acpi_initrd_override(void *data, size_t size); +#else +static inline void acpi_initrd_override(void *data, size_t size) +{ +} +#endif + char * __acpi_map_table (unsigned long phys_addr, unsigned long size); void __acpi_unmap_table(char *map, unsigned long size); int early_acpi_boot_init(void); -- cgit v1.2.3 From 3a50597de8635cd05133bd12c95681c82fe7b878 Mon Sep 17 00:00:00 2001 From: David Howells Date: Tue, 2 Oct 2012 19:24:29 +0100 Subject: KEYS: Make the session and process keyrings per-thread Make the session keyring per-thread rather than per-process, but still inherited from the parent thread to solve a problem with PAM and gdm. The problem is that join_session_keyring() will reject attempts to change the session keyring of a multithreaded program but gdm is now multithreaded before it gets to the point of starting PAM and running pam_keyinit to create the session keyring. See: https://bugs.freedesktop.org/show_bug.cgi?id=49211 The reason that join_session_keyring() will only change the session keyring under a single-threaded environment is that it's hard to alter the other thread's credentials to effect the change in a multi-threaded program. The problems are such as: (1) How to prevent two threads both running join_session_keyring() from racing. (2) Another thread's credentials may not be modified directly by this process. (3) The number of threads is uncertain whilst we're not holding the appropriate spinlock, making preallocation slightly tricky. (4) We could use TIF_NOTIFY_RESUME and key_replace_session_keyring() to get another thread to replace its keyring, but that means preallocating for each thread. A reasonable way around this is to make the session keyring per-thread rather than per-process and just document that if you want a common session keyring, you must get it before you spawn any threads - which is the current situation anyway. Whilst we're at it, we can the process keyring behave in the same way. This means we can clean up some of the ickyness in the creds code. Basically, after this patch, the session, process and thread keyrings are about inheritance rules only and not about sharing changes of keyring. Reported-by: Mantas M. Signed-off-by: David Howells Tested-by: Ray Strode --- include/linux/cred.h | 17 ++--------------- 1 file changed, 2 insertions(+), 15 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cred.h b/include/linux/cred.h index ebbed2ce6637..0142aacb70b7 100644 --- a/include/linux/cred.h +++ b/include/linux/cred.h @@ -76,21 +76,6 @@ extern int groups_search(const struct group_info *, kgid_t); extern int in_group_p(kgid_t); extern int in_egroup_p(kgid_t); -/* - * The common credentials for a thread group - * - shared by CLONE_THREAD - */ -#ifdef CONFIG_KEYS -struct thread_group_cred { - atomic_t usage; - pid_t tgid; /* thread group process ID */ - spinlock_t lock; - struct key __rcu *session_keyring; /* keyring inherited over fork */ - struct key *process_keyring; /* keyring private to this process */ - struct rcu_head rcu; /* RCU deletion hook */ -}; -#endif - /* * The security context of a task * @@ -139,6 +124,8 @@ struct cred { #ifdef CONFIG_KEYS unsigned char jit_keyring; /* default keyring to attach requested * keys to */ + struct key __rcu *session_keyring; /* keyring inherited over fork */ + struct key *process_keyring; /* keyring private to this process */ struct key *thread_keyring; /* keyring private to this thread */ struct key *request_key_auth; /* assumed request_key authority */ struct thread_group_cred *tgcred; /* thread-group shared credentials */ -- cgit v1.2.3 From 96b5c8fea6c0861621051290d705ec2e971963f1 Mon Sep 17 00:00:00 2001 From: David Howells Date: Tue, 2 Oct 2012 19:24:56 +0100 Subject: KEYS: Reduce initial permissions on keys Reduce the initial permissions on new keys to grant the possessor everything, view permission only to the user (so the keys can be seen in /proc/keys) and nothing else. This gives the creator a chance to adjust the permissions mask before other processes can access the new key or create a link to it. To aid with this, keyring_alloc() now takes a permission argument rather than setting the permissions itself. The following permissions are now set: (1) The user and user-session keyrings grant the user that owns them full permissions and grant a possessor everything bar SETATTR. (2) The process and thread keyrings grant the possessor full permissions but only grant the user VIEW. This permits the user to see them in /proc/keys, but not to do anything with them. (3) Anonymous session keyrings grant the possessor full permissions, but only grant the user VIEW and READ. This means that the user can see them in /proc/keys and can list them, but nothing else. Possibly READ shouldn't be provided either. (4) Named session keyrings grant everything an anonymous session keyring does, plus they grant the user LINK permission. The whole point of named session keyrings is that others can also subscribe to them. Possibly this should be a separate permission to LINK. (5) The temporary session keyring created by call_sbin_request_key() gets the same permissions as an anonymous session keyring. (6) Keys created by add_key() get VIEW, SEARCH, LINK and SETATTR for the possessor, plus READ and/or WRITE if the key type supports them. The used only gets VIEW now. (7) Keys created by request_key() now get the same as those created by add_key(). Reported-by: Lennart Poettering Reported-by: Stef Walter Signed-off-by: David Howells --- include/linux/key.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/key.h b/include/linux/key.h index cef3b315ba7c..890699815212 100644 --- a/include/linux/key.h +++ b/include/linux/key.h @@ -264,6 +264,7 @@ extern int key_unlink(struct key *keyring, extern struct key *keyring_alloc(const char *description, uid_t uid, gid_t gid, const struct cred *cred, + key_perm_t perm, unsigned long flags, struct key *dest); -- cgit v1.2.3 From 9202e07636f0c4858ba6c30773a3f160b2b5659a Mon Sep 17 00:00:00 2001 From: Liu Yu-B13201 Date: Tue, 3 Jul 2012 05:48:52 +0000 Subject: KVM: PPC: Add support for ePAPR idle hcall in host kernel And add a new flag definition in kvm_ppc_pvinfo to indicate whether the host supports the EV_IDLE hcall. Signed-off-by: Liu Yu [stuart.yoder@freescale.com: cleanup,fixes for conditions allowing idle] Signed-off-by: Stuart Yoder [agraf: fix typo] Signed-off-by: Alexander Graf --- include/linux/kvm.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 0a6d6ba44c85..4cb3761bebae 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -477,6 +477,8 @@ struct kvm_ppc_smmu_info { struct kvm_ppc_one_seg_page_size sps[KVM_PPC_PAGE_SIZES_MAX_SZ]; }; +#define KVM_PPC_PVINFO_FLAGS_EV_IDLE (1<<0) + #define KVMIO 0xAE /* machine type bits, to be used as argument to KVM_CREATE_VM */ -- cgit v1.2.3 From f61c94bb99ca4253ac5dd57750e1af209a4beb7a Mon Sep 17 00:00:00 2001 From: Bharat Bhushan Date: Wed, 8 Aug 2012 20:38:19 +0000 Subject: KVM: PPC: booke: Add watchdog emulation This patch adds the watchdog emulation in KVM. The watchdog emulation is enabled by KVM_ENABLE_CAP(KVM_CAP_PPC_BOOKE_WATCHDOG) ioctl. The kernel timer are used for watchdog emulation and emulates h/w watchdog state machine. On watchdog timer expiry, it exit to QEMU if TCR.WRC is non ZERO. QEMU can reset/shutdown etc depending upon how it is configured. Signed-off-by: Liu Yu Signed-off-by: Scott Wood [bharat.bhushan@freescale.com: reworked patch] Signed-off-by: Bharat Bhushan [agraf: adjust to new request framework] Signed-off-by: Alexander Graf --- include/linux/kvm.h | 2 ++ include/linux/kvm_host.h | 1 + 2 files changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 4cb3761bebae..1649d4b57e1f 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -167,6 +167,7 @@ struct kvm_pit_config { #define KVM_EXIT_OSI 18 #define KVM_EXIT_PAPR_HCALL 19 #define KVM_EXIT_S390_UCONTROL 20 +#define KVM_EXIT_WATCHDOG 21 /* For KVM_EXIT_INTERNAL_ERROR */ #define KVM_INTERNAL_ERROR_EMULATION 1 @@ -628,6 +629,7 @@ struct kvm_ppc_smmu_info { #define KVM_CAP_READONLY_MEM 81 #endif #define KVM_CAP_IRQFD_RESAMPLE 82 +#define KVM_CAP_PPC_BOOKE_WATCHDOG 83 #ifdef KVM_CAP_IRQ_ROUTING diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 2850656e2e96..0ca3663206f8 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -118,6 +118,7 @@ static inline bool is_error_page(struct page *page) #define KVM_REQ_IMMEDIATE_EXIT 15 #define KVM_REQ_PMU 16 #define KVM_REQ_PMI 17 +#define KVM_REQ_WATCHDOG 18 #define KVM_USERSPACE_IRQ_SOURCE_ID 0 #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 -- cgit v1.2.3 From ed7a8d7a3c5dd4adedb271112b6faba45c7037f9 Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Thu, 13 Sep 2012 21:44:30 +0000 Subject: KVM: Move some PPC ioctl definitions to the correct place This moves the definitions of KVM_CREATE_SPAPR_TCE and KVM_ALLOCATE_RMA in include/linux/kvm.h from the section listing the vcpu ioctls to the section listing VM ioctls, as these are both implemented and documented as VM ioctls. Fortunately there is no actual collision of ioctl numbers at this point. Moving these to the correct section will reduce the probability of a future collision. This does not change the user/kernel ABI at all. Signed-off-by: Paul Mackerras Acked-by: Alexander Graf Signed-off-by: Alexander Graf --- include/linux/kvm.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 1649d4b57e1f..65ad5c624c70 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -852,6 +852,9 @@ struct kvm_s390_ucas_mapping { #define KVM_PPC_GET_SMMU_INFO _IOR(KVMIO, 0xa6, struct kvm_ppc_smmu_info) /* Available with KVM_CAP_PPC_ALLOC_HTAB */ #define KVM_PPC_ALLOCATE_HTAB _IOWR(KVMIO, 0xa7, __u32) +#define KVM_CREATE_SPAPR_TCE _IOW(KVMIO, 0xa8, struct kvm_create_spapr_tce) +/* Available with KVM_CAP_RMA */ +#define KVM_ALLOCATE_RMA _IOR(KVMIO, 0xa9, struct kvm_allocate_rma) /* * ioctls for vcpu fds @@ -915,9 +918,6 @@ struct kvm_s390_ucas_mapping { /* Available with KVM_CAP_XCRS */ #define KVM_GET_XCRS _IOR(KVMIO, 0xa6, struct kvm_xcrs) #define KVM_SET_XCRS _IOW(KVMIO, 0xa7, struct kvm_xcrs) -#define KVM_CREATE_SPAPR_TCE _IOW(KVMIO, 0xa8, struct kvm_create_spapr_tce) -/* Available with KVM_CAP_RMA */ -#define KVM_ALLOCATE_RMA _IOR(KVMIO, 0xa9, struct kvm_allocate_rma) /* Available with KVM_CAP_SW_TLB */ #define KVM_DIRTY_TLB _IOW(KVMIO, 0xaa, struct kvm_dirty_tlb) /* Available with KVM_CAP_ONE_REG */ -- cgit v1.2.3 From 385ddeac7ed99cf7dc62d76274d55fbd7cae1b5a Mon Sep 17 00:00:00 2001 From: "Luck, Tony" Date: Fri, 5 Oct 2012 15:05:34 -0700 Subject: X86 ACPI: Use #ifdef not #if for CONFIG_X86 check Fix a build warning on ia64: include/linux/acpi.h:437:5: warning: "CONFIG_X86" is not defined Signed-off-by: Tony Luck Link: http://lkml.kernel.org/r/506f59ae9600b36a4@agluck-desktop.sc.intel.com Cc: Len Brown Cc: Thomas Renninger Signed-off-by: H. Peter Anvin --- include/linux/acpi.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index d14081c10c17..49fe586e3b1e 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -434,7 +434,7 @@ void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state, acpi_status acpi_os_prepare_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control); -#if CONFIG_X86 +#ifdef CONFIG_X86 void arch_reserve_mem_area(acpi_physical_address addr, size_t size); #else static inline void arch_reserve_mem_area(acpi_physical_address addr, -- cgit v1.2.3 From 8b6e4547e0e4b6aac11df6d8d4e71ea2ab159b5e Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Thu, 20 Sep 2012 07:43:08 +0200 Subject: KVM: x86: Convert kvm_arch_vcpu_reset into private kvm_vcpu_reset There are no external callers of this function as there is no concept of resetting a vcpu from generic code. Signed-off-by: Jan Kiszka Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 93bfc9f9815c..c35b1c08c004 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -582,7 +582,6 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); -int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu); int kvm_arch_hardware_enable(void *garbage); void kvm_arch_hardware_disable(void *garbage); int kvm_arch_hardware_setup(void); -- cgit v1.2.3 From 90f790d2dc96f5a61855ae65b90e30c40c893a20 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 20 Aug 2012 21:45:05 +0100 Subject: regmap: irq: Allow users to retrieve the irq_domain This is useful for integration with other subsystems, especially MFD, and provides an alternative API for users that request their own IRQs. Signed-off-by: Mark Brown --- include/linux/regmap.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index e3bcc3f4dcb8..b9e99799965d 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -19,6 +19,7 @@ struct module; struct device; struct i2c_client; +struct irq_domain; struct spi_device; struct regmap; struct regmap_range_cfg; @@ -317,6 +318,7 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags, void regmap_del_irq_chip(int irq, struct regmap_irq_chip_data *data); int regmap_irq_chip_get_base(struct regmap_irq_chip_data *data); int regmap_irq_get_virq(struct regmap_irq_chip_data *data, int irq); +struct irq_domain *regmap_irq_get_domain(struct regmap_irq_chip_data *data); #else -- cgit v1.2.3 From e3549cd01347ef211d01353bdf2572b086574007 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 2 Oct 2012 20:17:15 +0100 Subject: regmap: Rename n_ranges to num_ranges This makes things consistent with the rest of the API and is actually what the documentation says. We don't currently have any in tree users so low cost. Signed-off-by: Mark Brown --- include/linux/regmap.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index e3bcc3f4dcb8..afc8e1a2cd1b 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -133,7 +133,7 @@ struct regmap_config { enum regmap_endian val_format_endian; const struct regmap_range_cfg *ranges; - unsigned int n_ranges; + unsigned int num_ranges; }; /** -- cgit v1.2.3 From d058bb49618482f2eff0db57618c9a7352916dd5 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 3 Oct 2012 12:40:47 +0100 Subject: regmap: Allow ranges to be named For more useful diagnostics. Signed-off-by: Mark Brown --- include/linux/regmap.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index afc8e1a2cd1b..9f228d7f7ac4 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -142,6 +142,8 @@ struct regmap_config { * 1. page selector register update; * 2. access through data window registers. * + * @name: Descriptive name for diagnostics + * * @range_min: Address of the lowest register address in virtual range. * @range_max: Address of the highest register in virtual range. * @@ -153,6 +155,8 @@ struct regmap_config { * @window_len: Number of registers in data window. */ struct regmap_range_cfg { + const char *name; + /* Registers of virtual address range */ unsigned int range_min; unsigned int range_max; -- cgit v1.2.3 From b8a6d9980f75cf5401a5ab23834eace1cb23c4f1 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Fri, 14 Sep 2012 10:35:54 +0800 Subject: dma: ipu: rename mach/ipu.h to include/linux/dma/ipu-dma.h The header ipu.h really belongs to dma subsystem rather than imx platform. Rename it to ipu-dma.h and put it into include/linux/dma/. Signed-off-by: Shawn Guo Acked-by: Guennadi Liakhovetski Acked-by: Sascha Hauer Acked-by: Arnd Bergmann Cc: Vinod Koul Cc: Florian Tobias Schandinat Cc: linux-media@vger.kernel.org Cc: linux-fbdev@vger.kernel.org --- include/linux/dma/ipu-dma.h | 177 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 177 insertions(+) create mode 100644 include/linux/dma/ipu-dma.h (limited to 'include/linux') diff --git a/include/linux/dma/ipu-dma.h b/include/linux/dma/ipu-dma.h new file mode 100644 index 000000000000..18031115c668 --- /dev/null +++ b/include/linux/dma/ipu-dma.h @@ -0,0 +1,177 @@ +/* + * Copyright (C) 2008 + * Guennadi Liakhovetski, DENX Software Engineering, + * + * Copyright (C) 2005-2007 Freescale Semiconductor, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __LINUX_DMA_IPU_DMA_H +#define __LINUX_DMA_IPU_DMA_H + +#include +#include + +/* IPU DMA Controller channel definitions. */ +enum ipu_channel { + IDMAC_IC_0 = 0, /* IC (encoding task) to memory */ + IDMAC_IC_1 = 1, /* IC (viewfinder task) to memory */ + IDMAC_ADC_0 = 1, + IDMAC_IC_2 = 2, + IDMAC_ADC_1 = 2, + IDMAC_IC_3 = 3, + IDMAC_IC_4 = 4, + IDMAC_IC_5 = 5, + IDMAC_IC_6 = 6, + IDMAC_IC_7 = 7, /* IC (sensor data) to memory */ + IDMAC_IC_8 = 8, + IDMAC_IC_9 = 9, + IDMAC_IC_10 = 10, + IDMAC_IC_11 = 11, + IDMAC_IC_12 = 12, + IDMAC_IC_13 = 13, + IDMAC_SDC_0 = 14, /* Background synchronous display data */ + IDMAC_SDC_1 = 15, /* Foreground data (overlay) */ + IDMAC_SDC_2 = 16, + IDMAC_SDC_3 = 17, + IDMAC_ADC_2 = 18, + IDMAC_ADC_3 = 19, + IDMAC_ADC_4 = 20, + IDMAC_ADC_5 = 21, + IDMAC_ADC_6 = 22, + IDMAC_ADC_7 = 23, + IDMAC_PF_0 = 24, + IDMAC_PF_1 = 25, + IDMAC_PF_2 = 26, + IDMAC_PF_3 = 27, + IDMAC_PF_4 = 28, + IDMAC_PF_5 = 29, + IDMAC_PF_6 = 30, + IDMAC_PF_7 = 31, +}; + +/* Order significant! */ +enum ipu_channel_status { + IPU_CHANNEL_FREE, + IPU_CHANNEL_INITIALIZED, + IPU_CHANNEL_READY, + IPU_CHANNEL_ENABLED, +}; + +#define IPU_CHANNELS_NUM 32 + +enum pixel_fmt { + /* 1 byte */ + IPU_PIX_FMT_GENERIC, + IPU_PIX_FMT_RGB332, + IPU_PIX_FMT_YUV420P, + IPU_PIX_FMT_YUV422P, + IPU_PIX_FMT_YUV420P2, + IPU_PIX_FMT_YVU422P, + /* 2 bytes */ + IPU_PIX_FMT_RGB565, + IPU_PIX_FMT_RGB666, + IPU_PIX_FMT_BGR666, + IPU_PIX_FMT_YUYV, + IPU_PIX_FMT_UYVY, + /* 3 bytes */ + IPU_PIX_FMT_RGB24, + IPU_PIX_FMT_BGR24, + /* 4 bytes */ + IPU_PIX_FMT_GENERIC_32, + IPU_PIX_FMT_RGB32, + IPU_PIX_FMT_BGR32, + IPU_PIX_FMT_ABGR32, + IPU_PIX_FMT_BGRA32, + IPU_PIX_FMT_RGBA32, +}; + +enum ipu_color_space { + IPU_COLORSPACE_RGB, + IPU_COLORSPACE_YCBCR, + IPU_COLORSPACE_YUV +}; + +/* + * Enumeration of IPU rotation modes + */ +enum ipu_rotate_mode { + /* Note the enum values correspond to BAM value */ + IPU_ROTATE_NONE = 0, + IPU_ROTATE_VERT_FLIP = 1, + IPU_ROTATE_HORIZ_FLIP = 2, + IPU_ROTATE_180 = 3, + IPU_ROTATE_90_RIGHT = 4, + IPU_ROTATE_90_RIGHT_VFLIP = 5, + IPU_ROTATE_90_RIGHT_HFLIP = 6, + IPU_ROTATE_90_LEFT = 7, +}; + +/* + * Enumeration of DI ports for ADC. + */ +enum display_port { + DISP0, + DISP1, + DISP2, + DISP3 +}; + +struct idmac_video_param { + unsigned short in_width; + unsigned short in_height; + uint32_t in_pixel_fmt; + unsigned short out_width; + unsigned short out_height; + uint32_t out_pixel_fmt; + unsigned short out_stride; + bool graphics_combine_en; + bool global_alpha_en; + bool key_color_en; + enum display_port disp; + unsigned short out_left; + unsigned short out_top; +}; + +/* + * Union of initialization parameters for a logical channel. So far only video + * parameters are used. + */ +union ipu_channel_param { + struct idmac_video_param video; +}; + +struct idmac_tx_desc { + struct dma_async_tx_descriptor txd; + struct scatterlist *sg; /* scatterlist for this */ + unsigned int sg_len; /* tx-descriptor. */ + struct list_head list; +}; + +struct idmac_channel { + struct dma_chan dma_chan; + dma_cookie_t completed; /* last completed cookie */ + union ipu_channel_param params; + enum ipu_channel link; /* input channel, linked to the output */ + enum ipu_channel_status status; + void *client; /* Only one client per channel */ + unsigned int n_tx_desc; + struct idmac_tx_desc *desc; /* allocated tx-descriptors */ + struct scatterlist *sg[2]; /* scatterlist elements in buffer-0 and -1 */ + struct list_head free_list; /* free tx-descriptors */ + struct list_head queue; /* queued tx-descriptors */ + spinlock_t lock; /* protects sg[0,1], queue */ + struct mutex chan_mutex; /* protects status, cookie, free_list */ + bool sec_chan_en; + int active_buffer; + unsigned int eof_irq; + char eof_name[16]; /* EOF IRQ name for request_irq() */ +}; + +#define to_tx_desc(tx) container_of(tx, struct idmac_tx_desc, txd) +#define to_idmac_chan(c) container_of(c, struct idmac_channel, dma_chan) + +#endif /* __LINUX_DMA_IPU_DMA_H */ -- cgit v1.2.3 From e51d0f0ac4b7f513808743c6a62f0387eebd0144 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Sat, 15 Sep 2012 21:11:28 +0800 Subject: dma: imx-dma: remove cpu_is_xxx by using platform_device_id It changes the driver to use platform_device_id rather than cpu_is_xxx to determine the controller type, and updates the platform code accordingly. As the result, mach/hardware.h inclusion gets removed from the driver. Signed-off-by: Shawn Guo Signed-off-by: Sascha Hauer Acked-by: Arnd Bergmann Tested-by: Javier Martin Cc: Vinod Koul --- include/linux/platform_data/dma-imx.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/dma-imx.h b/include/linux/platform_data/dma-imx.h index 1b9080385b46..f6d30cc1cb77 100644 --- a/include/linux/platform_data/dma-imx.h +++ b/include/linux/platform_data/dma-imx.h @@ -61,7 +61,9 @@ static inline int imx_dma_is_ipu(struct dma_chan *chan) static inline int imx_dma_is_general_purpose(struct dma_chan *chan) { return strstr(dev_name(chan->device->dev), "sdma") || - !strcmp(dev_name(chan->device->dev), "imx-dma"); + !strcmp(dev_name(chan->device->dev), "imx1-dma") || + !strcmp(dev_name(chan->device->dev), "imx21-dma") || + !strcmp(dev_name(chan->device->dev), "imx27-dma"); } #endif -- cgit v1.2.3 From 1e66210a3135b544713a9455e78e36f6f8d1bf77 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Sun, 16 Sep 2012 22:16:44 +0800 Subject: ARM: imx: remove header file mach/irqs.h The only mach/irqs.h user outside arch/arm/mach-imx is sound/soc/fsl/imx-pcm-fiq.c, which refers to mxc_set_irq_fiq(). Move the declaration into include/linux/platform_data/asoc-imx-ssi.h, so that we can remove mach/irqs.h includsion from imx-pcm-fiq.c. Inside arch/arm/mach-imx, the only users to mach/irqs.h are avic.c and tzic.c for referring to macro FIQ_START. Let's move the macro into irq-common.h and get rid of mach/irqs.h completely. Signed-off-by: Shawn Guo Acked-by: Sascha Hauer Acked-by: Arnd Bergmann Acked-by: Mark Brown Cc: alsa-devel@alsa-project.org --- include/linux/platform_data/asoc-imx-ssi.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/asoc-imx-ssi.h b/include/linux/platform_data/asoc-imx-ssi.h index 63f3c2804239..92c7fd72f636 100644 --- a/include/linux/platform_data/asoc-imx-ssi.h +++ b/include/linux/platform_data/asoc-imx-ssi.h @@ -17,5 +17,7 @@ struct imx_ssi_platform_data { void (*ac97_warm_reset)(struct snd_ac97 *ac97); }; +extern int mxc_set_irq_fiq(unsigned int irq, unsigned int type); + #endif /* __MACH_SSI_H */ -- cgit v1.2.3 From c0cc3f1665256b7cfdc1d581f997dcea1af71405 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 28 Sep 2012 16:50:15 +0100 Subject: ASoC: wm8994: Allow a delay between jack insertion and microphone detect This can be used to provide some additional settling time to ensure that we don't start microphone detection while the microphone pin is connected to one of the headphone pins. Signed-off-by: Mark Brown --- include/linux/mfd/wm8994/pdata.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h index fc87be4fdc25..8e21a094836d 100644 --- a/include/linux/mfd/wm8994/pdata.h +++ b/include/linux/mfd/wm8994/pdata.h @@ -176,6 +176,11 @@ struct wm8994_pdata { unsigned int lineout1fb:1; unsigned int lineout2fb:1; + /* Delay between detecting a jack and starting microphone + * detect (specified in ms) + */ + int micdet_delay; + /* IRQ for microphone detection if brought out directly as a * signal. */ -- cgit v1.2.3 From 0c57067430a2b729bc08c92b17eb4f29d9bbfaae Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Sat, 6 Oct 2012 20:47:46 +0530 Subject: regulator: tps51632: Add tps51632 regulator driver The TPS51632 is a driverless step down controller with serial control. Advanced features such as D-Cap+ architecture with overlapping pulse support and OSR overshoot reduction provide fast transient response, lowest output capacitance and high efficiency. The TPS51632 supports both I2C and DVFS interfaces (through PWM) for dynamic control of the output voltage and current monitor telemetry. Add regulator driver for TPS51632. Signed-off-by: Laxman Dewangan Signed-off-by: Mark Brown --- include/linux/regulator/tps51632-regulator.h | 47 ++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 include/linux/regulator/tps51632-regulator.h (limited to 'include/linux') diff --git a/include/linux/regulator/tps51632-regulator.h b/include/linux/regulator/tps51632-regulator.h new file mode 100644 index 000000000000..d00841e1a75a --- /dev/null +++ b/include/linux/regulator/tps51632-regulator.h @@ -0,0 +1,47 @@ +/* + * tps51632-regulator.h -- TPS51632 regulator + * + * Interface for regulator driver for TPS51632 3-2-1 Phase D-Cap Step Down + * Driverless Controller with serial VID control and DVFS. + * + * Copyright (C) 2012 NVIDIA Corporation + + * Author: Laxman Dewangan + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#ifndef __LINUX_REGULATOR_TPS51632_H +#define __LINUX_REGULATOR_TPS51632_H + +/* + * struct tps51632_regulator_platform_data - tps51632 regulator platform data. + * + * @reg_init_data: The regulator init data. + * @enable_pwm_dvfs: Enable PWM DVFS or not. + * @dvfs_step_20mV: Step for DVFS is 20mV or 10mV. + * @max_voltage_uV: Maximum possible voltage in PWM-DVFS mode. + * @base_voltage_uV: Base voltage when PWM-DVFS enabled. + */ +struct tps51632_regulator_platform_data { + struct regulator_init_data *reg_init_data; + bool enable_pwm_dvfs; + bool dvfs_step_20mV; + int max_voltage_uV; + int base_voltage_uV; +}; + +#endif /* __LINUX_REGULATOR_TPS51632_H */ -- cgit v1.2.3 From bd7a2b600ace90c8819495b639a744c8f5c68feb Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Mon, 24 Sep 2012 18:56:53 +0100 Subject: regulator: core: Support for continuous voltage range Some regulators can set any voltage within the constraints range, not being limited to specified operating points. This patch makes it possible to describe such regulator and makes the regulator_is_supported_voltage() function behave correctly. Signed-off-by: Pawel Moll Signed-off-by: Mark Brown --- include/linux/regulator/driver.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 7932a3bf21bd..f2b72b230b9b 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -181,6 +181,8 @@ enum regulator_type { * @type: Indicates if the regulator is a voltage or current regulator. * @owner: Module providing the regulator, used for refcounting. * + * @continuous_voltage_range: Indicates if the regulator can set any + * voltage within constrains range. * @n_voltages: Number of selectors available for ops.list_voltage(). * * @min_uV: Voltage given by the lowest selector (if linear mapping) @@ -199,6 +201,7 @@ struct regulator_desc { const char *name; const char *supply_name; int id; + bool continuous_voltage_range; unsigned n_voltages; struct regulator_ops *ops; int irq; -- cgit v1.2.3 From 757ef79188657087f96f6f12c003b682860fede2 Mon Sep 17 00:00:00 2001 From: Jon Hunter Date: Thu, 28 Jun 2012 13:41:29 -0500 Subject: ARM: OMAP2+: GPMC: Remove unused OneNAND get_freq() platform function A platform function pointer for getting the frequency of a OneNAND device was added so that a platform could specify a custom function for returning the frequency and not just rely on the OneNAND version to determine the frequency. However, this platform function pointer is not currently being used and I am not sure if it ever has. OneNAND devices are not so common these days and as far as I know not being used with new devices. Therefore, it is most likely that this get_freq() function pointer will not be used and so remove it. Given that the get_freq() function pointer is not used, neither is the clk_dep variable and so all references to it can also be removed. Signed-off-by: Jon Hunter Signed-off-by: Afzal Mohammed --- include/linux/platform_data/mtd-onenand-omap2.h | 8 -------- 1 file changed, 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/mtd-onenand-omap2.h b/include/linux/platform_data/mtd-onenand-omap2.h index 2858667d2e4f..21bb0ff4052e 100644 --- a/include/linux/platform_data/mtd-onenand-omap2.h +++ b/include/linux/platform_data/mtd-onenand-omap2.h @@ -15,20 +15,12 @@ #define ONENAND_SYNC_READ (1 << 0) #define ONENAND_SYNC_READWRITE (1 << 1) -struct onenand_freq_info { - u16 maf_id; - u16 dev_id; - u16 ver_id; -}; - struct omap_onenand_platform_data { int cs; int gpio_irq; struct mtd_partition *parts; int nr_parts; int (*onenand_setup)(void __iomem *, int *freq_ptr); - int (*get_freq)(const struct onenand_freq_info *freq_info, - bool *clk_dep); int dma_channel; u8 flags; u8 regulator_can_sleep; -- cgit v1.2.3 From eb77b6a78ac7f63985a3f592baf80ff33d213c48 Mon Sep 17 00:00:00 2001 From: Afzal Mohammed Date: Fri, 5 Oct 2012 11:39:54 +0530 Subject: ARM: OMAP2+: onenand: connected soc info in pdata onenand driver needs to know whether soc is falling under 34xx family to properly handle onenand. But driver is not supposed to do cpu_is_* check, hence educate platform data with this information. Driver can make use of it to avoid cpu_is_* check. Signed-off-by: Afzal Mohammed --- include/linux/platform_data/mtd-onenand-omap2.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/mtd-onenand-omap2.h b/include/linux/platform_data/mtd-onenand-omap2.h index 21bb0ff4052e..ef9c60d4b29b 100644 --- a/include/linux/platform_data/mtd-onenand-omap2.h +++ b/include/linux/platform_data/mtd-onenand-omap2.h @@ -14,6 +14,7 @@ #define ONENAND_SYNC_READ (1 << 0) #define ONENAND_SYNC_READWRITE (1 << 1) +#define ONENAND_IN_OMAP34XX (1 << 2) struct omap_onenand_platform_data { int cs; -- cgit v1.2.3 From b6ab13e7d6d2778702baea7433d0bd9f234d5083 Mon Sep 17 00:00:00 2001 From: Afzal Mohammed Date: Sat, 29 Sep 2012 10:32:42 +0530 Subject: ARM: OMAP2+: onenand: header cleanup For common arm zImage existing onenand header file in platform specific location was moved to generic platform data location, but it contained more than platform data, remove it. New local header has been created for exposing functions. Signed-off-by: Afzal Mohammed --- include/linux/platform_data/mtd-onenand-omap2.h | 19 +++---------------- 1 file changed, 3 insertions(+), 16 deletions(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/mtd-onenand-omap2.h b/include/linux/platform_data/mtd-onenand-omap2.h index ef9c60d4b29b..685af7e8b120 100644 --- a/include/linux/platform_data/mtd-onenand-omap2.h +++ b/include/linux/platform_data/mtd-onenand-omap2.h @@ -9,6 +9,9 @@ * published by the Free Software Foundation. */ +#ifndef __MTD_ONENAND_OMAP2_H +#define __MTD_ONENAND_OMAP2_H + #include #include @@ -27,20 +30,4 @@ struct omap_onenand_platform_data { u8 regulator_can_sleep; u8 skip_initial_unlocking; }; - -#define ONENAND_MAX_PARTITIONS 8 - -#if defined(CONFIG_MTD_ONENAND_OMAP2) || \ - defined(CONFIG_MTD_ONENAND_OMAP2_MODULE) - -extern void gpmc_onenand_init(struct omap_onenand_platform_data *d); - -#else - -#define board_onenand_data NULL - -static inline void gpmc_onenand_init(struct omap_onenand_platform_data *d) -{ -} - #endif -- cgit v1.2.3 From bc3668ea046be9e841eecfab04bddfa759e765d6 Mon Sep 17 00:00:00 2001 From: Afzal Mohammed Date: Sat, 29 Sep 2012 12:26:13 +0530 Subject: ARM: OMAP2+: nand: header cleanup For common arm zImage existing nand header file in platform specific location was moved to generic platform data location, but it contained more than platform data, remove it. New local header has been created for exposing functions. Also move gpmc-nand platform data to platform header meant for nand from gpmc header file Signed-off-by: Afzal Mohammed --- include/linux/platform_data/mtd-nand-omap2.h | 41 ++++++++++++++++++++-------- 1 file changed, 29 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/mtd-nand-omap2.h b/include/linux/platform_data/mtd-nand-omap2.h index 1a68c1e5fe53..e1965fe581d1 100644 --- a/include/linux/platform_data/mtd-nand-omap2.h +++ b/include/linux/platform_data/mtd-nand-omap2.h @@ -8,7 +8,9 @@ * published by the Free Software Foundation. */ -#include +#ifndef _MTD_NAND_OMAP2_H +#define _MTD_NAND_OMAP2_H + #include enum nand_io { @@ -18,10 +20,35 @@ enum nand_io { NAND_OMAP_PREFETCH_IRQ /* prefetch enabled irq mode */ }; +enum omap_ecc { + /* 1-bit ecc: stored at end of spare area */ + OMAP_ECC_HAMMING_CODE_DEFAULT = 0, /* Default, s/w method */ + OMAP_ECC_HAMMING_CODE_HW, /* gpmc to detect the error */ + /* 1-bit ecc: stored at beginning of spare area as romcode */ + OMAP_ECC_HAMMING_CODE_HW_ROMCODE, /* gpmc method & romcode layout */ + OMAP_ECC_BCH4_CODE_HW, /* 4-bit BCH ecc code */ + OMAP_ECC_BCH8_CODE_HW, /* 8-bit BCH ecc code */ +}; + +struct gpmc_nand_regs { + void __iomem *gpmc_status; + void __iomem *gpmc_nand_command; + void __iomem *gpmc_nand_address; + void __iomem *gpmc_nand_data; + void __iomem *gpmc_prefetch_config1; + void __iomem *gpmc_prefetch_config2; + void __iomem *gpmc_prefetch_control; + void __iomem *gpmc_prefetch_status; + void __iomem *gpmc_ecc_config; + void __iomem *gpmc_ecc_control; + void __iomem *gpmc_ecc_size_config; + void __iomem *gpmc_ecc1_result; + void __iomem *gpmc_bch_result0; +}; + struct omap_nand_platform_data { int cs; struct mtd_partition *parts; - struct gpmc_timings *gpmc_t; int nr_parts; bool dev_ready; enum nand_io xfer_type; @@ -30,14 +57,4 @@ struct omap_nand_platform_data { struct gpmc_nand_regs reg; }; -/* minimum size for IO mapping */ -#define NAND_IO_SIZE 4 - -#if defined(CONFIG_MTD_NAND_OMAP2) || defined(CONFIG_MTD_NAND_OMAP2_MODULE) -extern int gpmc_nand_init(struct omap_nand_platform_data *d); -#else -static inline int gpmc_nand_init(struct omap_nand_platform_data *d) -{ - return 0; -} #endif -- cgit v1.2.3 From 2fdf0c98969fdac8f7b191d4988e2e436717c857 Mon Sep 17 00:00:00 2001 From: Afzal Mohammed Date: Thu, 4 Oct 2012 15:49:04 +0530 Subject: ARM: OMAP2+: gpmc: nand register helper bch update Update helper function that provides gpmc-nand register details for nand driver with bch register information. Using this nand driver can be made self sufficient to handle remaining gpmc-nand operations by itself instead of relying on gpmc exported nand functions. Signed-off-by: Afzal Mohammed --- include/linux/platform_data/mtd-nand-omap2.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/mtd-nand-omap2.h b/include/linux/platform_data/mtd-nand-omap2.h index e1965fe581d1..24d32ca34bef 100644 --- a/include/linux/platform_data/mtd-nand-omap2.h +++ b/include/linux/platform_data/mtd-nand-omap2.h @@ -13,6 +13,8 @@ #include +#define GPMC_BCH_NUM_REMAINDER 8 + enum nand_io { NAND_OMAP_PREFETCH_POLLED = 0, /* prefetch polled mode, default */ NAND_OMAP_POLLED, /* polled mode, without prefetch */ @@ -43,7 +45,10 @@ struct gpmc_nand_regs { void __iomem *gpmc_ecc_control; void __iomem *gpmc_ecc_size_config; void __iomem *gpmc_ecc1_result; - void __iomem *gpmc_bch_result0; + void __iomem *gpmc_bch_result0[GPMC_BCH_NUM_REMAINDER]; + void __iomem *gpmc_bch_result1[GPMC_BCH_NUM_REMAINDER]; + void __iomem *gpmc_bch_result2[GPMC_BCH_NUM_REMAINDER]; + void __iomem *gpmc_bch_result3[GPMC_BCH_NUM_REMAINDER]; }; struct omap_nand_platform_data { -- cgit v1.2.3 From 68f39e74fbc3e58ad52d008072bddacc9eee1c7e Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Mon, 15 Oct 2012 12:09:43 -0700 Subject: ARM: OMAP: Split plat/mmc.h into local headers and platform_data We need to remove this from plat for ARM common zImage support. Also remove includes not needed by the omap_hsmmc.c driver. Cc: linux-mmc@vger.kernel.org Acked-by: Chris Ball Acked-by: Venkatraman S [tony@atomide.com: fold in removal of unused driver includes] Signed-off-by: Tony Lindgren --- include/linux/platform_data/mmc-omap.h | 147 +++++++++++++++++++++++++++++++++ 1 file changed, 147 insertions(+) create mode 100644 include/linux/platform_data/mmc-omap.h (limited to 'include/linux') diff --git a/include/linux/platform_data/mmc-omap.h b/include/linux/platform_data/mmc-omap.h new file mode 100644 index 000000000000..39a7abc5604c --- /dev/null +++ b/include/linux/platform_data/mmc-omap.h @@ -0,0 +1,147 @@ +/* + * MMC definitions for OMAP2 + * + * Copyright (C) 2006 Nokia Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#define OMAP_MMC_MAX_SLOTS 2 + +/* + * struct omap_mmc_dev_attr.flags possibilities + * + * OMAP_HSMMC_SUPPORTS_DUAL_VOLT: Some HSMMC controller instances can + * operate with either 1.8Vdc or 3.0Vdc card voltages; this flag + * should be set if this is the case. See for example Section 22.5.3 + * "MMC/SD/SDIO1 Bus Voltage Selection" of the OMAP34xx Multimedia + * Device Silicon Revision 3.1.x Revision ZR (July 2011) (SWPU223R). + * + * OMAP_HSMMC_BROKEN_MULTIBLOCK_READ: Multiple-block read transfers + * don't work correctly on some MMC controller instances on some + * OMAP3 SoCs; this flag should be set if this is the case. See + * for example Advisory 2.1.1.128 "MMC: Multiple Block Read + * Operation Issue" in _OMAP3530/3525/3515/3503 Silicon Errata_ + * Revision F (October 2010) (SPRZ278F). + */ +#define OMAP_HSMMC_SUPPORTS_DUAL_VOLT BIT(0) +#define OMAP_HSMMC_BROKEN_MULTIBLOCK_READ BIT(1) + +struct mmc_card; + +struct omap_mmc_dev_attr { + u8 flags; +}; + +struct omap_mmc_platform_data { + /* back-link to device */ + struct device *dev; + + /* number of slots per controller */ + unsigned nr_slots:2; + + /* set if your board has components or wiring that limits the + * maximum frequency on the MMC bus */ + unsigned int max_freq; + + /* switch the bus to a new slot */ + int (*switch_slot)(struct device *dev, int slot); + /* initialize board-specific MMC functionality, can be NULL if + * not supported */ + int (*init)(struct device *dev); + void (*cleanup)(struct device *dev); + void (*shutdown)(struct device *dev); + + /* To handle board related suspend/resume functionality for MMC */ + int (*suspend)(struct device *dev, int slot); + int (*resume)(struct device *dev, int slot); + + /* Return context loss count due to PM states changing */ + int (*get_context_loss_count)(struct device *dev); + + /* Integrating attributes from the omap_hwmod layer */ + u8 controller_flags; + + /* Register offset deviation */ + u16 reg_offset; + + struct omap_mmc_slot_data { + + /* + * 4/8 wires and any additional host capabilities + * need to OR'd all capabilities (ref. linux/mmc/host.h) + */ + u8 wires; /* Used for the MMC driver on omap1 and 2420 */ + u32 caps; /* Used for the MMC driver on 2430 and later */ + u32 pm_caps; /* PM capabilities of the mmc */ + + /* + * nomux means "standard" muxing is wrong on this board, and + * that board-specific code handled it before common init logic. + */ + unsigned nomux:1; + + /* switch pin can be for card detect (default) or card cover */ + unsigned cover:1; + + /* use the internal clock */ + unsigned internal_clock:1; + + /* nonremovable e.g. eMMC */ + unsigned nonremovable:1; + + /* Try to sleep or power off when possible */ + unsigned power_saving:1; + + /* If using power_saving and the MMC power is not to go off */ + unsigned no_off:1; + + /* eMMC does not handle power off when not in sleep state */ + unsigned no_regulator_off_init:1; + + /* Regulator off remapped to sleep */ + unsigned vcc_aux_disable_is_sleep:1; + + /* we can put the features above into this variable */ +#define HSMMC_HAS_PBIAS (1 << 0) +#define HSMMC_HAS_UPDATED_RESET (1 << 1) + unsigned features; + + int switch_pin; /* gpio (card detect) */ + int gpio_wp; /* gpio (write protect) */ + + int (*set_bus_mode)(struct device *dev, int slot, int bus_mode); + int (*set_power)(struct device *dev, int slot, + int power_on, int vdd); + int (*get_ro)(struct device *dev, int slot); + void (*remux)(struct device *dev, int slot, int power_on); + /* Call back before enabling / disabling regulators */ + void (*before_set_reg)(struct device *dev, int slot, + int power_on, int vdd); + /* Call back after enabling / disabling regulators */ + void (*after_set_reg)(struct device *dev, int slot, + int power_on, int vdd); + /* if we have special card, init it using this callback */ + void (*init_card)(struct mmc_card *card); + + /* return MMC cover switch state, can be NULL if not supported. + * + * possible return values: + * 0 - closed + * 1 - open + */ + int (*get_cover_state)(struct device *dev, int slot); + + const char *name; + u32 ocr_mask; + + /* Card detection IRQs */ + int card_detect_irq; + int (*card_detect)(struct device *dev, int slot); + + unsigned int ban_openended:1; + + } slots[OMAP_MMC_MAX_SLOTS]; +}; -- cgit v1.2.3 From 53db20d123f7a1bf44e46b727775403672655fde Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Mon, 15 Oct 2012 12:10:33 -0700 Subject: mmc: omap: Remove cpu_is_omap usage from the driver This is needed for the ARM common zImage support. We can use the existing slot features to pass omap1 specific options to the driver. For omap2 we don't want to pass anything new as that will be eventually moved to use device tree based init. Note that this patch depends on earlier patch that moves plat/mmc.h into include/linux/platform_data. Cc: linux-mmc@vger.kernel.org Cc: Venkatraman S Acked-by: Chris Ball Signed-off-by: Tony Lindgren --- include/linux/platform_data/mmc-omap.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/mmc-omap.h b/include/linux/platform_data/mmc-omap.h index 39a7abc5604c..2bf6ea82ff94 100644 --- a/include/linux/platform_data/mmc-omap.h +++ b/include/linux/platform_data/mmc-omap.h @@ -107,6 +107,9 @@ struct omap_mmc_platform_data { /* we can put the features above into this variable */ #define HSMMC_HAS_PBIAS (1 << 0) #define HSMMC_HAS_UPDATED_RESET (1 << 1) +#define MMC_OMAP7XX (1 << 2) +#define MMC_OMAP15XX (1 << 3) +#define MMC_OMAP16XX (1 << 4) unsigned features; int switch_pin; /* gpio (card detect) */ -- cgit v1.2.3 From 1b61810d196b84bfdc14c289126d98de765b7f97 Mon Sep 17 00:00:00 2001 From: Chad Reese Date: Mon, 8 Oct 2012 17:38:32 -0700 Subject: RapidIO: Fix comment error. The resource index for the mailboxes was incorrect. Signed-off-by: Chad Reese Acked-by: Alexandre Bounine Signed-off-by: Jiri Kosina --- include/linux/rio.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/rio.h b/include/linux/rio.h index a90ebadd9da0..abddba9db130 100644 --- a/include/linux/rio.h +++ b/include/linux/rio.h @@ -62,7 +62,7 @@ * * 0 RapidIO inbound doorbells * 1 RapidIO inbound mailboxes - * 1 RapidIO outbound mailboxes + * 2 RapidIO outbound mailboxes */ #define RIO_DOORBELL_RESOURCE 0 #define RIO_INB_MBOX_RESOURCE 1 -- cgit v1.2.3 From 7bd3b61853da6d2fc579e27c7a1ac1e9fc968d1a Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Mon, 15 Oct 2012 13:53:41 -0700 Subject: ARM: OMAP2: Move plat/menelaus.h to linux/mfd/menelaus.h We can move menelaus.h to live with other mfd headers to get it out of plat for ARM common zImage support. Acked-by: Samuel Ortiz Signed-off-by: Tony Lindgren --- include/linux/mfd/menelaus.h | 47 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 include/linux/mfd/menelaus.h (limited to 'include/linux') diff --git a/include/linux/mfd/menelaus.h b/include/linux/mfd/menelaus.h new file mode 100644 index 000000000000..f097e89134cb --- /dev/null +++ b/include/linux/mfd/menelaus.h @@ -0,0 +1,47 @@ +/* + * Functions to access Menelaus power management chip + */ + +#ifndef __ASM_ARCH_MENELAUS_H +#define __ASM_ARCH_MENELAUS_H + +struct device; + +struct menelaus_platform_data { + int (* late_init)(struct device *dev); +}; + +extern int menelaus_register_mmc_callback(void (*callback)(void *data, u8 card_mask), + void *data); +extern void menelaus_unregister_mmc_callback(void); +extern int menelaus_set_mmc_opendrain(int slot, int enable); +extern int menelaus_set_mmc_slot(int slot, int enable, int power, int cd_on); + +extern int menelaus_set_vmem(unsigned int mV); +extern int menelaus_set_vio(unsigned int mV); +extern int menelaus_set_vmmc(unsigned int mV); +extern int menelaus_set_vaux(unsigned int mV); +extern int menelaus_set_vdcdc(int dcdc, unsigned int mV); +extern int menelaus_set_slot_sel(int enable); +extern int menelaus_get_slot_pin_states(void); +extern int menelaus_set_vcore_sw(unsigned int mV); +extern int menelaus_set_vcore_hw(unsigned int roof_mV, unsigned int floor_mV); + +#define EN_VPLL_SLEEP (1 << 7) +#define EN_VMMC_SLEEP (1 << 6) +#define EN_VAUX_SLEEP (1 << 5) +#define EN_VIO_SLEEP (1 << 4) +#define EN_VMEM_SLEEP (1 << 3) +#define EN_DC3_SLEEP (1 << 2) +#define EN_DC2_SLEEP (1 << 1) +#define EN_VC_SLEEP (1 << 0) + +extern int menelaus_set_regulator_sleep(int enable, u32 val); + +#if defined(CONFIG_ARCH_OMAP2) && defined(CONFIG_MENELAUS) +#define omap_has_menelaus() 1 +#else +#define omap_has_menelaus() 0 +#endif + +#endif -- cgit v1.2.3 From 98aed08e16c5f18d0c31fc07127bc163ccd0d04c Mon Sep 17 00:00:00 2001 From: Jean Pihet Date: Thu, 4 Oct 2012 18:47:11 +0200 Subject: ARM: OMAP: SmartReflex: pass device dependent data via platform data Remove the device dependent code (ex. cpu_is_xxx()) and settings from the driver code and instead pass them via the platform data. This allows a clean separation of the driver code and the platform code, as required by the move of the platform header files to include/linux/platform_data. Note about the smartreflex functional clocks: the smartreflex fclks are derived from sys_clk and have the same name as the main_clk from the hwmod entry, in order for the SmartReflex driver to request the fclk (using clk_get(dev, "fck")). Signed-off-by: Jean Pihet Signed-off-by: Kevin Hilman --- include/linux/power/smartreflex.h | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/power/smartreflex.h b/include/linux/power/smartreflex.h index 4a496ebc7d73..c0f44c2b006d 100644 --- a/include/linux/power/smartreflex.h +++ b/include/linux/power/smartreflex.h @@ -260,8 +260,13 @@ struct omap_sr_nvalue_table { * * @name: instance name * @ip_type: Smartreflex IP type. - * @senp_mod: SENPENABLE value for the sr - * @senn_mod: SENNENABLE value for sr + * @senp_mod: SENPENABLE value of the sr CONFIG register + * @senn_mod: SENNENABLE value for sr CONFIG register + * @err_weight ERRWEIGHT value of the sr ERRCONFIG register + * @err_maxlimit ERRMAXLIMIT value of the sr ERRCONFIG register + * @accum_data ACCUMDATA value of the sr CONFIG register + * @senn_avgweight SENNAVGWEIGHT value of the sr AVGWEIGHT register + * @senp_avgweight SENPAVGWEIGHT value of the sr AVGWEIGHT register * @nvalue_count: Number of distinct nvalues in the nvalue table * @enable_on_init: whether this sr module needs to enabled at * boot up or not. @@ -274,6 +279,11 @@ struct omap_sr_data { int ip_type; u32 senp_mod; u32 senn_mod; + u32 err_weight; + u32 err_maxlimit; + u32 accum_data; + u32 senn_avgweight; + u32 senp_avgweight; int nvalue_count; bool enable_on_init; struct omap_sr_nvalue_table *nvalue_table; -- cgit v1.2.3 From 5edee61edeaaebafe584f8fb7074c1ef4658596b Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 16 Oct 2012 15:03:14 -0700 Subject: cgroup: cgroup_subsys->fork() should be called after the task is added to css_set cgroup core has a bug which violates a basic rule about event notifications - when a new entity needs to be added, you add that to the notification list first and then make the new entity conform to the current state. If done in the reverse order, an event happening inbetween will be lost. cgroup_subsys->fork() is invoked way before the new task is added to the css_set. Currently, cgroup_freezer is the only user of ->fork() and uses it to make new tasks conform to the current state of the freezer. If FROZEN state is requested while fork is in progress between cgroup_fork_callbacks() and cgroup_post_fork(), the child could escape freezing - the cgroup isn't frozen when ->fork() is called and the freezer couldn't see the new task on the css_set. This patch moves cgroup_subsys->fork() invocation to cgroup_post_fork() after the new task is added to the css_set. cgroup_fork_callbacks() is removed. Because now a task may be migrated during cgroup_subsys->fork(), freezer_fork() is updated so that it adheres to the usual RCU locking and the rather pointless comment on why locking can be different there is removed (if it doesn't make anything simpler, why even bother?). Signed-off-by: Tejun Heo Cc: Oleg Nesterov Cc: Rafael J. Wysocki Cc: stable@vger.kernel.org --- include/linux/cgroup.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index f8a030ced0c7..4cd1d0fd2542 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -34,7 +34,6 @@ extern int cgroup_lock_is_held(void); extern bool cgroup_lock_live_group(struct cgroup *cgrp); extern void cgroup_unlock(void); extern void cgroup_fork(struct task_struct *p); -extern void cgroup_fork_callbacks(struct task_struct *p); extern void cgroup_post_fork(struct task_struct *p); extern void cgroup_exit(struct task_struct *p, int run_callbacks); extern int cgroupstats_build(struct cgroupstats *stats, -- cgit v1.2.3 From dd67d32dbc5de299d70cc9e10c6c1e29ffa56b92 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 16 Oct 2012 15:03:14 -0700 Subject: freezer: add missing mb's to freezer_count() and freezer_should_skip() A task is considered frozen enough between freezer_do_not_count() and freezer_count() and freezers use freezer_should_skip() to test this condition. This supposedly works because freezer_count() always calls try_to_freezer() after clearing %PF_FREEZER_SKIP. However, there currently is nothing which guarantees that freezer_count() sees %true freezing() after clearing %PF_FREEZER_SKIP when freezing is in progress, and vice-versa. A task can escape the freezing condition in effect by freezer_count() seeing !freezing() and freezer_should_skip() seeing %PF_FREEZER_SKIP. This patch adds smp_mb()'s to freezer_count() and freezer_should_skip() such that either %true freezing() is visible to freezer_count() or !PF_FREEZER_SKIP is visible to freezer_should_skip(). Signed-off-by: Tejun Heo Cc: Oleg Nesterov Cc: Rafael J. Wysocki Cc: stable@vger.kernel.org --- include/linux/freezer.h | 50 +++++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 42 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/freezer.h b/include/linux/freezer.h index d09af4b67cf1..ee899329e65a 100644 --- a/include/linux/freezer.h +++ b/include/linux/freezer.h @@ -75,28 +75,62 @@ static inline bool cgroup_freezing(struct task_struct *task) */ -/* Tell the freezer not to count the current task as freezable. */ +/** + * freezer_do_not_count - tell freezer to ignore %current + * + * Tell freezers to ignore the current task when determining whether the + * target frozen state is reached. IOW, the current task will be + * considered frozen enough by freezers. + * + * The caller shouldn't do anything which isn't allowed for a frozen task + * until freezer_cont() is called. Usually, freezer[_do_not]_count() pair + * wrap a scheduling operation and nothing much else. + */ static inline void freezer_do_not_count(void) { current->flags |= PF_FREEZER_SKIP; } -/* - * Tell the freezer to count the current task as freezable again and try to - * freeze it. +/** + * freezer_count - tell freezer to stop ignoring %current + * + * Undo freezer_do_not_count(). It tells freezers that %current should be + * considered again and tries to freeze if freezing condition is already in + * effect. */ static inline void freezer_count(void) { current->flags &= ~PF_FREEZER_SKIP; + /* + * If freezing is in progress, the following paired with smp_mb() + * in freezer_should_skip() ensures that either we see %true + * freezing() or freezer_should_skip() sees !PF_FREEZER_SKIP. + */ + smp_mb(); try_to_freeze(); } -/* - * Check if the task should be counted as freezable by the freezer +/** + * freezer_should_skip - whether to skip a task when determining frozen + * state is reached + * @p: task in quesion + * + * This function is used by freezers after establishing %true freezing() to + * test whether a task should be skipped when determining the target frozen + * state is reached. IOW, if this function returns %true, @p is considered + * frozen enough. */ -static inline int freezer_should_skip(struct task_struct *p) +static inline bool freezer_should_skip(struct task_struct *p) { - return !!(p->flags & PF_FREEZER_SKIP); + /* + * The following smp_mb() paired with the one in freezer_count() + * ensures that either freezer_count() sees %true freezing() or we + * see cleared %PF_FREEZER_SKIP and return %false. This makes it + * impossible for a task to slip frozen state testing after + * clearing %PF_FREEZER_SKIP. + */ + smp_mb(); + return p->flags & PF_FREEZER_SKIP; } /* -- cgit v1.2.3 From 0384e90b853357d24935c65ba0e1bdd27faa6e58 Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Sun, 7 Oct 2012 18:19:44 +0200 Subject: spi/mcspi: allow configuration of pin directions Allow D0 to be an input and D1 to be an output, configurable via platform data and a new DT property. Based on a patch from Matus Ujhelyi Signed-off-by: Daniel Mack Signed-off-by: Mark Brown --- include/linux/platform_data/spi-omap2-mcspi.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/spi-omap2-mcspi.h b/include/linux/platform_data/spi-omap2-mcspi.h index a357eb26bd25..ce70f7b5a8e1 100644 --- a/include/linux/platform_data/spi-omap2-mcspi.h +++ b/include/linux/platform_data/spi-omap2-mcspi.h @@ -7,9 +7,13 @@ #define OMAP4_MCSPI_REG_OFFSET 0x100 +#define MCSPI_PINDIR_D0_OUT_D1_IN 0 +#define MCSPI_PINDIR_D0_IN_D1_OUT 1 + struct omap2_mcspi_platform_config { unsigned short num_cs; unsigned int regs_offset; + unsigned int pin_dir:1; }; struct omap2_mcspi_dev_attr { -- cgit v1.2.3 From 0d4529c534c1c664f25088eb5f5b4d7ce0ee2510 Mon Sep 17 00:00:00 2001 From: Davide Ciminaghi Date: Tue, 16 Oct 2012 15:56:59 +0200 Subject: regmap: make lock/unlock functions customizable It is sometimes convenient for a regmap user to override the standard regmap lock/unlock functions with custom functions. For instance this can be useful in case an already existing spinlock or mutex has to be used for locking a set of registers instead of the internal regmap spinlock/mutex. Note that the fast_io field of struct regmap_bus is ignored in case custom locking functions are used. Signed-off-by: Davide Ciminaghi Signed-off-by: Mark Brown --- include/linux/regmap.h | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index e3bcc3f4dcb8..5d243786f254 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -53,6 +53,9 @@ enum regmap_endian { REGMAP_ENDIAN_NATIVE, }; +typedef void (*regmap_lock)(void *); +typedef void (*regmap_unlock)(void *); + /** * Configuration for the register map of a device. * @@ -75,6 +78,12 @@ enum regmap_endian { * @precious_reg: Optional callback returning true if the rgister * should not be read outside of a call from the driver * (eg, a clear on read interrupt status register). + * @lock: Optional lock callback (overrides regmap's default lock + * function, based on spinlock or mutex). + * @unlock: As above for unlocking. + * @lock_arg: this field is passed as the only argument of lock/unlock + * functions (ignored in case regular lock/unlock functions + * are not overridden). * * @max_register: Optional, specifies the maximum valid register index. * @reg_defaults: Power on reset values for registers (for use with @@ -116,6 +125,9 @@ struct regmap_config { bool (*readable_reg)(struct device *dev, unsigned int reg); bool (*volatile_reg)(struct device *dev, unsigned int reg); bool (*precious_reg)(struct device *dev, unsigned int reg); + regmap_lock lock; + regmap_unlock unlock; + void *lock_arg; unsigned int max_register; const struct reg_default *reg_defaults; @@ -181,7 +193,9 @@ typedef void (*regmap_hw_free_context)(void *context); * Description of a hardware bus for the register map infrastructure. * * @fast_io: Register IO is fast. Use a spinlock instead of a mutex - * to perform locking. + * to perform locking. This field is ignored if custom lock/unlock + * functions are used (see fields lock/unlock of + * struct regmap_config). * @write: Write operation. * @gather_write: Write operation with split register/value, return -ENOTSUPP * if not implemented on a given device. -- cgit v1.2.3 From d4950281d72d8845225e3a39dbeb366c40c824c9 Mon Sep 17 00:00:00 2001 From: Mahesh Palivela Date: Wed, 10 Oct 2012 11:25:40 +0000 Subject: ieee80211: Rename VHT cap struct Rename struct ieee80211_vht_capabilities to ieee80211_vht_cap and renamed its member vht_capabilities_info to vht_cap_info. Signed-off-by: Mahesh Palivela Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 45 +++++++++++++++++++++++++++++++-------------- 1 file changed, 31 insertions(+), 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 2385119f8bb0..8c803f0e4925 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -1107,20 +1107,6 @@ struct ieee80211_ht_operation { #define WLAN_HT_SMPS_CONTROL_STATIC 1 #define WLAN_HT_SMPS_CONTROL_DYNAMIC 3 -#define VHT_MCS_SUPPORTED_SET_SIZE 8 - -struct ieee80211_vht_capabilities { - __le32 vht_capabilities_info; - u8 vht_supported_mcs_set[VHT_MCS_SUPPORTED_SET_SIZE]; -} __packed; - -struct ieee80211_vht_operation { - u8 vht_op_info_chwidth; - u8 vht_op_info_chan_center_freq_seg1_idx; - u8 vht_op_info_chan_center_freq_seg2_idx; - __le16 vht_basic_mcs_set; -} __packed; - /** * struct ieee80211_vht_mcs_info - VHT MCS information * @rx_mcs_map: RX MCS map 2 bits for each stream, total 8 streams @@ -1141,6 +1127,37 @@ struct ieee80211_vht_mcs_info { __le16 tx_highest; } __packed; +/** + * struct ieee80211_vht_cap - VHT capabilities + * + * This structure is the "VHT capabilities element" as + * described in 802.11ac D3.0 8.4.2.160 + * @vht_cap_info: VHT capability info + * @supp_mcs: VHT MCS supported rates + */ +struct ieee80211_vht_cap { + __le32 vht_cap_info; + struct ieee80211_vht_mcs_info supp_mcs; +} __packed; + +/** + * struct ieee80211_vht_operation - VHT operation IE + * + * This structure is the "VHT operation element" as + * described in 802.11ac D3.0 8.4.2.161 + * @chan_width: Operating channel width + * @center_freq_seg1_idx: center freq segment 1 index + * @center_freq_seg2_idx: center freq segment 2 index + * @basic_mcs_set: VHT Basic MCS rate set + */ +struct ieee80211_vht_operation { + u8 chan_width; + u8 center_freq_seg1_idx; + u8 center_freq_seg2_idx; + __le16 basic_mcs_set; +} __packed; + + #define IEEE80211_VHT_MCS_ZERO_TO_SEVEN_SUPPORT 0 #define IEEE80211_VHT_MCS_ZERO_TO_EIGHT_SUPPORT 1 #define IEEE80211_VHT_MCS_ZERO_TO_NINE_SUPPORT 2 -- cgit v1.2.3 From 24282a1ca33b4a2cdfb907fb7a3ba4d0f6e93311 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Tue, 9 Oct 2012 15:18:59 +0530 Subject: regulator: tps65090: Register all regulators in single probe call MFD driver registers the regulator driver once per device and hence it is require to register all regulators in single probe call. Following are details of changes done to achieve this: - Move the regulator enums to mfd header and remove the tps65090-regulator.h as it does not contain more info. - Add max regulator and register all regulators even if there is no regulator init data from platform. - Convert regulator init data to pointer type in platform data. - Add input supply name in regulator desc to provide input supply. - Separate desc information from driver information. - Disable external control bit to have control through register write. Signed-off-by: Laxman Dewangan Signed-off-by: Mark Brown --- include/linux/mfd/tps65090.h | 28 ++++++++++++++++ include/linux/regulator/tps65090-regulator.h | 50 ---------------------------- 2 files changed, 28 insertions(+), 50 deletions(-) delete mode 100644 include/linux/regulator/tps65090-regulator.h (limited to 'include/linux') diff --git a/include/linux/mfd/tps65090.h b/include/linux/mfd/tps65090.h index 6bc31d854626..d06c63335a2a 100644 --- a/include/linux/mfd/tps65090.h +++ b/include/linux/mfd/tps65090.h @@ -24,6 +24,23 @@ #include +/* TPS65090 Regulator ID */ +enum { + TPS65090_ID_DCDC1, + TPS65090_ID_DCDC2, + TPS65090_ID_DCDC3, + TPS65090_ID_FET1, + TPS65090_ID_FET2, + TPS65090_ID_FET3, + TPS65090_ID_FET4, + TPS65090_ID_FET5, + TPS65090_ID_FET6, + TPS65090_ID_FET7, + + /* Last entry for maximum ID */ + TPS65090_ID_MAX, +}; + struct tps65090 { struct mutex lock; struct device *dev; @@ -41,10 +58,21 @@ struct tps65090_subdev_info { void *platform_data; }; +/* + * struct tps65090_regulator_plat_data + * + * @reg_init_data: The regulator init data. + */ + +struct tps65090_regulator_plat_data { + struct regulator_init_data *reg_init_data; +}; + struct tps65090_platform_data { int irq_base; int num_subdevs; struct tps65090_subdev_info *subdevs; + struct tps65090_regulator_plat_data *reg_pdata[TPS65090_ID_MAX]; }; /* diff --git a/include/linux/regulator/tps65090-regulator.h b/include/linux/regulator/tps65090-regulator.h deleted file mode 100644 index 0fa04b64db3e..000000000000 --- a/include/linux/regulator/tps65090-regulator.h +++ /dev/null @@ -1,50 +0,0 @@ -/* - * Regulator driver interface for TI TPS65090 PMIC family - * - * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. - - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - - * You should have received a copy of the GNU General Public License - * along with this program. If not, see . - */ - -#ifndef __REGULATOR_TPS65090_H -#define __REGULATOR_TPS65090_H - -#include - -#define tps65090_rails(_name) "tps65090_"#_name - -enum { - TPS65090_ID_DCDC1, - TPS65090_ID_DCDC2, - TPS65090_ID_DCDC3, - TPS65090_ID_FET1, - TPS65090_ID_FET2, - TPS65090_ID_FET3, - TPS65090_ID_FET4, - TPS65090_ID_FET5, - TPS65090_ID_FET6, - TPS65090_ID_FET7, -}; - -/* - * struct tps65090_regulator_platform_data - * - * @regulator: The regulator init data. - * @slew_rate_uV_per_us: Slew rate microvolt per microsec. - */ - -struct tps65090_regulator_platform_data { - struct regulator_init_data regulator; -}; - -#endif /* __REGULATOR_TPS65090_H */ -- cgit v1.2.3 From 8620ca9f77b71a0069a6151e859b988117ef1fa5 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Tue, 9 Oct 2012 15:19:00 +0530 Subject: regulator: tps65090: rename driver name and regulator name To make the names proper and more appropriate: Rename the driver name from tps65090-regulator to tps65090-pmic. Rename the regulators from TPS65090_ID_* to TPS65090_REGULATOR_* Signed-off-by: Laxman Dewangan Signed-off-by: Mark Brown --- include/linux/mfd/tps65090.h | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/tps65090.h b/include/linux/mfd/tps65090.h index d06c63335a2a..958bf155097c 100644 --- a/include/linux/mfd/tps65090.h +++ b/include/linux/mfd/tps65090.h @@ -26,19 +26,19 @@ /* TPS65090 Regulator ID */ enum { - TPS65090_ID_DCDC1, - TPS65090_ID_DCDC2, - TPS65090_ID_DCDC3, - TPS65090_ID_FET1, - TPS65090_ID_FET2, - TPS65090_ID_FET3, - TPS65090_ID_FET4, - TPS65090_ID_FET5, - TPS65090_ID_FET6, - TPS65090_ID_FET7, + TPS65090_REGULATOR_DCDC1, + TPS65090_REGULATOR_DCDC2, + TPS65090_REGULATOR_DCDC3, + TPS65090_REGULATOR_FET1, + TPS65090_REGULATOR_FET2, + TPS65090_REGULATOR_FET3, + TPS65090_REGULATOR_FET4, + TPS65090_REGULATOR_FET5, + TPS65090_REGULATOR_FET6, + TPS65090_REGULATOR_FET7, /* Last entry for maximum ID */ - TPS65090_ID_MAX, + TPS65090_REGULATOR_MAX, }; struct tps65090 { @@ -72,7 +72,7 @@ struct tps65090_platform_data { int irq_base; int num_subdevs; struct tps65090_subdev_info *subdevs; - struct tps65090_regulator_plat_data *reg_pdata[TPS65090_ID_MAX]; + struct tps65090_regulator_plat_data *reg_pdata[TPS65090_REGULATOR_MAX]; }; /* -- cgit v1.2.3 From 3a81ef8c27cea5c749a45765da4e06a7af75be2b Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Tue, 9 Oct 2012 15:19:01 +0530 Subject: regulator: tps65090: Add support for LDO regulators TPS65090 supports the two LDOs, LDO1 and LDO2. These are always ON regulators. The output on these LDOs are available once the input voltage available for these LDOs. Add support for these LDOs regulators. Signed-off-by: Laxman Dewangan Signed-off-by: Mark Brown --- include/linux/mfd/tps65090.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/tps65090.h b/include/linux/mfd/tps65090.h index 958bf155097c..598921221ff0 100644 --- a/include/linux/mfd/tps65090.h +++ b/include/linux/mfd/tps65090.h @@ -36,6 +36,8 @@ enum { TPS65090_REGULATOR_FET5, TPS65090_REGULATOR_FET6, TPS65090_REGULATOR_FET7, + TPS65090_REGULATOR_LDO1, + TPS65090_REGULATOR_LDO2, /* Last entry for maximum ID */ TPS65090_REGULATOR_MAX, -- cgit v1.2.3 From f329b1755b475f64f0472cda1ae9602e092f6f05 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Tue, 9 Oct 2012 15:19:02 +0530 Subject: regulator: tps65090: add external control support for DCDC The TPS65090's DCDC output can also be enable/disable through the external digital input signal. Add support for enable/disable either through register access via I2C or through external control inputs. The external control inputs can be driven through GPIOs also and hence adding support for passing the GPIO number. Signed-off-by: Laxman Dewangan Signed-off-by: Mark Brown --- include/linux/mfd/tps65090.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/tps65090.h b/include/linux/mfd/tps65090.h index 598921221ff0..804e280c1e1d 100644 --- a/include/linux/mfd/tps65090.h +++ b/include/linux/mfd/tps65090.h @@ -64,10 +64,15 @@ struct tps65090_subdev_info { * struct tps65090_regulator_plat_data * * @reg_init_data: The regulator init data. + * @enable_ext_control: Enable extrenal control or not. Only available for + * DCDC1, DCDC2 and DCDC3. + * @gpio: Gpio number if external control is enabled and controlled through + * gpio. */ - struct tps65090_regulator_plat_data { struct regulator_init_data *reg_init_data; + bool enable_ext_control; + int gpio; }; struct tps65090_platform_data { -- cgit v1.2.3 From a8f7445c7b0d2b7a523e521e2d14974804910ad0 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Tue, 2 Oct 2012 14:12:31 -0700 Subject: ARM: OMAP: Move plat/led.h to include/linux/platform_data We need to move this away from plat for ARM common zImage support. Signed-off-by: Tony Lindgren --- include/linux/platform_data/leds-omap.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 include/linux/platform_data/leds-omap.h (limited to 'include/linux') diff --git a/include/linux/platform_data/leds-omap.h b/include/linux/platform_data/leds-omap.h new file mode 100644 index 000000000000..56c9b2a0ada5 --- /dev/null +++ b/include/linux/platform_data/leds-omap.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2006 Samsung Electronics + * Kyungmin Park + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef ASMARM_ARCH_LED_H +#define ASMARM_ARCH_LED_H + +struct omap_led_config { + struct led_classdev cdev; + s16 gpio; +}; + +struct omap_led_platform_data { + s16 nr_leds; + struct omap_led_config *leds; +}; + +#endif -- cgit v1.2.3 From 3821b4247b40d6b95a59a2895ea6e9bd3f983f04 Mon Sep 17 00:00:00 2001 From: Arend van Spriel Date: Fri, 12 Oct 2012 12:28:16 +0200 Subject: wireless: remove duplicate enum ieee80211_eid definitions WLAN_EID_WPA and WLAN_EID_GENERIC mapped to the same value as WLAN_EID_VENDOR_SPECIFIC. The last one being more in line with the standard specification. Removing WLAN_EID_WPA and WLAN_EID_GENERIC as there are no longer drivers using these. Cc: Johannes Berg Signed-off-by: Arend van Spriel Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 8c803f0e4925..85764a900731 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -1457,8 +1457,6 @@ enum ieee80211_eid { WLAN_EID_RSN = 48, WLAN_EID_MMIE = 76, - WLAN_EID_WPA = 221, - WLAN_EID_GENERIC = 221, WLAN_EID_VENDOR_SPECIFIC = 221, WLAN_EID_QOS_PARAMETER = 222, -- cgit v1.2.3 From b9bf6882c1f9451ce1e80aaed32107673a735613 Mon Sep 17 00:00:00 2001 From: Xiao Guangrong Date: Wed, 17 Oct 2012 13:46:52 +0800 Subject: KVM: VMX: report internal error for the unhandleable event VM exits during Event Delivery is really unexpected if it is not caused by Exceptions/EPT-VIOLATION/TASK_SWITCH, we'd better to report an internal and freeze the guest, the VMM has the chance to check the guest Signed-off-by: Xiao Guangrong Signed-off-by: Avi Kivity --- include/linux/kvm.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 65ad5c624c70..494a84c37c3e 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -170,8 +170,12 @@ struct kvm_pit_config { #define KVM_EXIT_WATCHDOG 21 /* For KVM_EXIT_INTERNAL_ERROR */ -#define KVM_INTERNAL_ERROR_EMULATION 1 -#define KVM_INTERNAL_ERROR_SIMUL_EX 2 +/* Emulate instruction failed. */ +#define KVM_INTERNAL_ERROR_EMULATION 1 +/* Encounter unexpected simultaneous exceptions. */ +#define KVM_INTERNAL_ERROR_SIMUL_EX 2 +/* Encounter unexpected vm-exit due to delivery event. */ +#define KVM_INTERNAL_ERROR_DELIVERY_EV 3 /* for KVM_RUN, returned by mmap(vcpu_fd, offset=0) */ struct kvm_run { -- cgit v1.2.3 From b2409b65d9401f7e3c572fc59db6a920fc7a163e Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 19 Oct 2012 07:29:17 -0300 Subject: [media] remove include/linux/dvb/dmx.h The only reason for this header is to make sure that include linux/time.h were added before uapi/*/dmx.h. Just push down the time.h header on the few places where this is used, and drop this new header. Signed-off-by: Mauro Carvalho Chehab --- include/linux/dvb/dmx.h | 29 ----------------------------- 1 file changed, 29 deletions(-) delete mode 100644 include/linux/dvb/dmx.h (limited to 'include/linux') diff --git a/include/linux/dvb/dmx.h b/include/linux/dvb/dmx.h deleted file mode 100644 index 0be6d8f2b52b..000000000000 --- a/include/linux/dvb/dmx.h +++ /dev/null @@ -1,29 +0,0 @@ -/* - * dmx.h - * - * Copyright (C) 2000 Marcus Metzler - * & Ralph Metzler - * for convergence integrated media GmbH - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public License - * as published by the Free Software Foundation; either version 2.1 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - * - */ -#ifndef _DVBDMX_H_ -#define _DVBDMX_H_ - -#include -#include - -#endif /*_DVBDMX_H_*/ -- cgit v1.2.3 From 74df06daf632ce2d321d01cb046004768352efc4 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 19 Oct 2012 07:41:50 -0300 Subject: [media] Remove include/linux/dvb/ stuff The only file left there is include/linux/dvb/video.h. The only function for it is to include linux/compiler.h, but this is already indirectly included. So, get rid of it. Signed-off-by: Mauro Carvalho Chehab --- include/linux/dvb/Kbuild | 0 include/linux/dvb/video.h | 29 ----------------------------- 2 files changed, 29 deletions(-) delete mode 100644 include/linux/dvb/Kbuild delete mode 100644 include/linux/dvb/video.h (limited to 'include/linux') diff --git a/include/linux/dvb/Kbuild b/include/linux/dvb/Kbuild deleted file mode 100644 index e69de29bb2d1..000000000000 diff --git a/include/linux/dvb/video.h b/include/linux/dvb/video.h deleted file mode 100644 index 85c20d925696..000000000000 --- a/include/linux/dvb/video.h +++ /dev/null @@ -1,29 +0,0 @@ -/* - * video.h - * - * Copyright (C) 2000 Marcus Metzler - * & Ralph Metzler - * for convergence integrated media GmbH - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public License - * as published by the Free Software Foundation; either version 2.1 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - * - */ -#ifndef _DVBVIDEO_H_ -#define _DVBVIDEO_H_ - -#include -#include - -#endif /*_DVBVIDEO_H_*/ -- cgit v1.2.3 From 103d9fb907058e4eb052f4f7302d1b07eb6a7792 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Tue, 16 Oct 2012 17:29:00 +0100 Subject: iio: Add a logarithmic fractional value type For ADCs or DACs the denominator for fractional types often is a power of two. In this case we can use a shift operation instead of the rather expensive 64 bit division. This patch adds a new fractional type which expects the denominator to be specified as the log2 of the actual denominator. E.g. for ADCs and DACs this will usually be the number of significant bits. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- include/linux/iio/types.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h index 5c647ecfd5ba..87b196a2d698 100644 --- a/include/linux/iio/types.h +++ b/include/linux/iio/types.h @@ -58,5 +58,6 @@ enum iio_modifier { #define IIO_VAL_INT_PLUS_NANO 3 #define IIO_VAL_INT_PLUS_MICRO_DB 4 #define IIO_VAL_FRACTIONAL 10 +#define IIO_VAL_FRACTIONAL_LOG2 11 #endif /* _IIO_TYPES_H_ */ -- cgit v1.2.3 From 8341dc04dfb33fbae71727ae648e20c51abc40e3 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Tue, 16 Oct 2012 17:29:00 +0100 Subject: iio:dac: Add support for the ad5449 This patch adds support for the AD5415, AD5426, AD5429, AD5432, AD5439, AD5443 and AD5449 single and dual channel DACs. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- include/linux/platform_data/ad5449.h | 40 ++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 include/linux/platform_data/ad5449.h (limited to 'include/linux') diff --git a/include/linux/platform_data/ad5449.h b/include/linux/platform_data/ad5449.h new file mode 100644 index 000000000000..bd712bd4b94e --- /dev/null +++ b/include/linux/platform_data/ad5449.h @@ -0,0 +1,40 @@ +/* + * AD5415, AD5426, AD5429, AD5432, AD5439, AD5443, AD5449 Digital to Analog + * Converter driver. + * + * Copyright 2012 Analog Devices Inc. + * Author: Lars-Peter Clausen + * + * Licensed under the GPL-2. + */ + +#ifndef __LINUX_PLATFORM_DATA_AD5449_H__ +#define __LINUX_PLATFORM_DATA_AD5449_H__ + +/** + * enum ad5449_sdo_mode - AD5449 SDO pin configuration + * @AD5449_SDO_DRIVE_FULL: Drive the SDO pin with full strength. + * @AD5449_SDO_DRIVE_WEAK: Drive the SDO pin with not full strength. + * @AD5449_SDO_OPEN_DRAIN: Operate the SDO pin in open-drain mode. + * @AD5449_SDO_DISABLED: Disable the SDO pin, in this mode it is not possible to + * read back from the device. + */ +enum ad5449_sdo_mode { + AD5449_SDO_DRIVE_FULL = 0x0, + AD5449_SDO_DRIVE_WEAK = 0x1, + AD5449_SDO_OPEN_DRAIN = 0x2, + AD5449_SDO_DISABLED = 0x3, +}; + +/** + * struct ad5449_platform_data - Platform data for the ad5449 DAC driver + * @sdo_mode: SDO pin mode + * @hardware_clear_to_midscale: Whether asserting the hardware CLR pin sets the + * outputs to midscale (true) or to zero scale(false). + */ +struct ad5449_platform_data { + enum ad5449_sdo_mode sdo_mode; + bool hardware_clear_to_midscale; +}; + +#endif -- cgit v1.2.3 From 49655bb8a51565f0375a4f783334c9de78134be5 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 29 Sep 2012 20:29:49 +0200 Subject: bcma: just do the necessary things in early register on SoCs Some parts of the initialization for chip common and the pcie core are accessing the sprom struct, but it is not initialized at that stage. Just do the necessary thing in the early register on SoCs and not the complete initialization to read out the nvram from the flash chip. After it is possible to read out the nvram, the sprom should be parsed from it and the full initialization of the cores should be run. Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/bcma/bcma_driver_chipcommon.h | 3 +++ include/linux/bcma/bcma_driver_mips.h | 3 +++ 2 files changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h index 1cf1749440ac..fbde7cbd2d7d 100644 --- a/include/linux/bcma/bcma_driver_chipcommon.h +++ b/include/linux/bcma/bcma_driver_chipcommon.h @@ -552,6 +552,7 @@ struct bcma_drv_cc { u32 capabilities; u32 capabilities_ext; u8 setup_done:1; + u8 early_setup_done:1; /* Fast Powerup Delay constant */ u16 fast_pwrup_delay; struct bcma_chipcommon_pmu pmu; @@ -583,6 +584,7 @@ struct bcma_drv_cc { bcma_cc_write32(cc, offset, (bcma_cc_read32(cc, offset) & (mask)) | (set)) extern void bcma_core_chipcommon_init(struct bcma_drv_cc *cc); +extern void bcma_core_chipcommon_early_init(struct bcma_drv_cc *cc); extern void bcma_chipco_suspend(struct bcma_drv_cc *cc); extern void bcma_chipco_resume(struct bcma_drv_cc *cc); @@ -606,6 +608,7 @@ u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value); /* PMU support */ extern void bcma_pmu_init(struct bcma_drv_cc *cc); +extern void bcma_pmu_early_init(struct bcma_drv_cc *cc); extern void bcma_chipco_pll_write(struct bcma_drv_cc *cc, u32 offset, u32 value); diff --git a/include/linux/bcma/bcma_driver_mips.h b/include/linux/bcma/bcma_driver_mips.h index c0043645cdcb..0baf8a56b794 100644 --- a/include/linux/bcma/bcma_driver_mips.h +++ b/include/linux/bcma/bcma_driver_mips.h @@ -35,13 +35,16 @@ struct bcma_device; struct bcma_drv_mips { struct bcma_device *core; u8 setup_done:1; + u8 early_setup_done:1; unsigned int assigned_irqs; }; #ifdef CONFIG_BCMA_DRIVER_MIPS extern void bcma_core_mips_init(struct bcma_drv_mips *mcore); +extern void bcma_core_mips_early_init(struct bcma_drv_mips *mcore); #else static inline void bcma_core_mips_init(struct bcma_drv_mips *mcore) { } +static inline void bcma_core_mips_early_init(struct bcma_drv_mips *mcore) { } #endif extern u32 bcma_cpu_clock(struct bcma_drv_mips *mcore); -- cgit v1.2.3 From 360dc31e9cc3f74d0d91a9d19b154c12592f4ffc Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 29 Sep 2012 20:33:49 +0200 Subject: bcma: mark pflash as present when available Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/bcma/bcma_driver_chipcommon.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h index fbde7cbd2d7d..79993969953a 100644 --- a/include/linux/bcma/bcma_driver_chipcommon.h +++ b/include/linux/bcma/bcma_driver_chipcommon.h @@ -510,6 +510,7 @@ struct bcma_chipcommon_pmu { #ifdef CONFIG_BCMA_DRIVER_MIPS struct bcma_pflash { + bool present; u8 buswidth; u32 window; u32 window_size; -- cgit v1.2.3 From cc787081bcab5a83051c2a936927634d066e7284 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 29 Sep 2012 20:33:50 +0200 Subject: bcma: add and use constants for the flash windows Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/bcma/bcma_regs.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_regs.h b/include/linux/bcma/bcma_regs.h index 6c9cb93ae3de..7e8104bb7a7e 100644 --- a/include/linux/bcma/bcma_regs.h +++ b/include/linux/bcma/bcma_regs.h @@ -85,6 +85,9 @@ * (2 ZettaBytes), high 32 bits */ -#define BCMA_SFLASH 0x1c000000 +#define BCMA_SOC_FLASH1 0x1fc00000 /* MIPS Flash Region 1 */ +#define BCMA_SOC_FLASH1_SZ 0x00400000 /* MIPS Size of Flash Region 1 */ +#define BCMA_SOC_FLASH2 0x1c000000 /* Flash Region 2 (region 1 shadowed here) */ +#define BCMA_SOC_FLASH2_SZ 0x02000000 /* Size of Flash Region 2 */ #endif /* LINUX_BCMA_REGS_H_ */ -- cgit v1.2.3 From e661b75a44cc811426ea005c3cb858e45bd73d57 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 29 Sep 2012 20:33:51 +0200 Subject: bcma: mark nflash if it is the boot flash There are some devices which are able to boot from nand flash and other are using a serial flash for booting. Add a bool to indicate that the device is booted from that flash chip and not from some other chip also connected to the SoC. This is needed to find the nvram, as it is stored on the flash the devices booted from. Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/bcma/bcma_driver_chipcommon.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h index 79993969953a..145f3c56227f 100644 --- a/include/linux/bcma/bcma_driver_chipcommon.h +++ b/include/linux/bcma/bcma_driver_chipcommon.h @@ -533,6 +533,7 @@ struct mtd_info; struct bcma_nflash { bool present; + bool boot; /* This is the flash the SoC boots from */ struct mtd_info *mtd; }; -- cgit v1.2.3 From 54c974984e8840c9e20390ce16e3d9f4ea674499 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 29 Sep 2012 20:36:17 +0200 Subject: ssb: move parallel flash config into an own struct This is a preparing step for adding serial flash support. Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/ssb/ssb_driver_mips.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb_driver_mips.h b/include/linux/ssb/ssb_driver_mips.h index 5f44e9740cd2..5d057db53071 100644 --- a/include/linux/ssb/ssb_driver_mips.h +++ b/include/linux/ssb/ssb_driver_mips.h @@ -13,6 +13,11 @@ struct ssb_serial_port { unsigned int reg_shift; }; +struct ssb_pflash { + u8 buswidth; + u32 window; + u32 window_size; +}; struct ssb_mipscore { struct ssb_device *dev; @@ -20,9 +25,7 @@ struct ssb_mipscore { int nr_serial_ports; struct ssb_serial_port serial_ports[4]; - u8 flash_buswidth; - u32 flash_window; - u32 flash_window_size; + struct ssb_pflash pflash; }; extern void ssb_mipscore_init(struct ssb_mipscore *mcore); -- cgit v1.2.3 From d954162c54ea81cee12acec1ee5fa19214d0de96 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 29 Sep 2012 20:36:18 +0200 Subject: ssb: add attribute to indicate a parallel flash is available Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/ssb/ssb_driver_mips.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb_driver_mips.h b/include/linux/ssb/ssb_driver_mips.h index 5d057db53071..07a9c7a2e088 100644 --- a/include/linux/ssb/ssb_driver_mips.h +++ b/include/linux/ssb/ssb_driver_mips.h @@ -14,6 +14,7 @@ struct ssb_serial_port { }; struct ssb_pflash { + bool present; u8 buswidth; u32 window; u32 window_size; -- cgit v1.2.3 From dfae714361ba75323914da19eb411aaae53d6af0 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 29 Sep 2012 20:40:18 +0200 Subject: bcma: add an extra pcie core struct The BCM4706 has two PCIe host controller on the bcma bus. For PCIe client mode it is assumed that there is only one PCIe controller so the PCIe driver, like b43 and brcmsmac are accessing the first PCIe controller when they want to issue a operation on the host controller. Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/bcma/bcma.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma.h b/include/linux/bcma/bcma.h index 4180eb78d575..fd15d9829705 100644 --- a/include/linux/bcma/bcma.h +++ b/include/linux/bcma/bcma.h @@ -251,7 +251,7 @@ struct bcma_bus { u8 num; struct bcma_drv_cc drv_cc; - struct bcma_drv_pci drv_pci; + struct bcma_drv_pci drv_pci[2]; struct bcma_drv_mips drv_mips; struct bcma_drv_gmac_cmn drv_gmac_cmn; -- cgit v1.2.3 From 733deca197143857f938b41d671cd7ce9c53c4bc Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 20 Oct 2012 13:13:11 -0400 Subject: Drop struct pt_regs * argument in compat_sys_execve() Signed-off-by: Al Viro --- include/linux/compat.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/compat.h b/include/linux/compat.h index d0ced1011f2f..d2db71077d93 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -286,10 +286,8 @@ asmlinkage ssize_t compat_sys_pwritev(unsigned long fd, int compat_do_execve(const char *filename, const compat_uptr_t __user *argv, const compat_uptr_t __user *envp, struct pt_regs *regs); -#ifdef __ARCH_WANT_SYS_EXECVE asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv, const compat_uptr_t __user *envp); -#endif asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, compat_ulong_t __user *outp, compat_ulong_t __user *exp, -- cgit v1.2.3 From 7e05484f02e1ea05a3aae0724d4df1e8a5a1920f Mon Sep 17 00:00:00 2001 From: Bryan Venteicher Date: Tue, 16 Oct 2012 23:55:54 +1030 Subject: virtio-scsi: Add real 2-clause BSD license to header This is analogous to commit a1b383870a made by Rusty Russell to all the VirtIO headers at the time. This eases the use of the header as is by other OSes. Signed-off-by: Bryan Venteicher Acked-by: Paolo Bonzini Signed-off-by: Rusty Russell --- include/linux/virtio_scsi.h | 28 ++++++++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/virtio_scsi.h b/include/linux/virtio_scsi.h index d6b4440387b7..4195b97a3def 100644 --- a/include/linux/virtio_scsi.h +++ b/include/linux/virtio_scsi.h @@ -1,7 +1,31 @@ +/* + * This header is BSD licensed so anyone can use the definitions to implement + * compatible drivers/servers. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + #ifndef _LINUX_VIRTIO_SCSI_H #define _LINUX_VIRTIO_SCSI_H -/* This header is BSD licensed so anyone can use the definitions to implement - * compatible drivers/servers. */ #define VIRTIO_SCSI_CDB_SIZE 32 #define VIRTIO_SCSI_SENSE_SIZE 96 -- cgit v1.2.3 From b8ec56d8eabc6382bd6586024138d9f1d1121ceb Mon Sep 17 00:00:00 2001 From: Matt Porter Date: Wed, 17 Oct 2012 16:08:03 +0200 Subject: ASoC: davinci: replace private sram api with genalloc Removes the DaVinci private SRAM API and replaces it with the genalloc API. The SRAM gen_pool is passed in pdata since DaVinci is in the early stages of DT conversion. [zonque@gmail.com: stub out gen_pool functions for !CONFIG_GENERIC_ALLOCATOR] Signed-off-by: Matt Porter Signed-off-by: Mark Brown --- include/linux/platform_data/davinci_asp.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/davinci_asp.h b/include/linux/platform_data/davinci_asp.h index d0c5825876f8..f3d6e4f20962 100644 --- a/include/linux/platform_data/davinci_asp.h +++ b/include/linux/platform_data/davinci_asp.h @@ -16,6 +16,8 @@ #ifndef __DAVINCI_ASP_H #define __DAVINCI_ASP_H +#include + struct snd_platform_data { u32 tx_dma_offset; u32 rx_dma_offset; @@ -30,6 +32,7 @@ struct snd_platform_data { unsigned enable_channel_combine:1; unsigned sram_size_playback; unsigned sram_size_capture; + struct gen_pool *sram_pool; /* * If McBSP peripheral gets the clock from an external pin, -- cgit v1.2.3 From a03bede5c73a6876fa891cfe82a65460dc9f4698 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Mon, 1 Oct 2012 10:31:53 -0400 Subject: USB: update documentation for URB_ISO_ASAP This patch (as1611) updates the USB documentation and kerneldoc to give a more precise meaning for the URB_ISO_ASAP flag and to explain more of the details of scheduling for isochronous URBs. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 27 ++++++++++++++++----------- 1 file changed, 16 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb.h b/include/linux/usb.h index 10278d18709c..f92cdf0c1457 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -1129,8 +1129,8 @@ extern int usb_disabled(void); * Note: URB_DIR_IN/OUT is automatically set in usb_submit_urb(). */ #define URB_SHORT_NOT_OK 0x0001 /* report short reads as errors */ -#define URB_ISO_ASAP 0x0002 /* iso-only, urb->start_frame - * ignored */ +#define URB_ISO_ASAP 0x0002 /* iso-only; use the first unexpired + * slot in the schedule */ #define URB_NO_TRANSFER_DMA_MAP 0x0004 /* urb->transfer_dma valid on submit */ #define URB_NO_FSBR 0x0020 /* UHCI-specific */ #define URB_ZERO_PACKET 0x0040 /* Finish bulk OUT with short packet */ @@ -1309,15 +1309,20 @@ typedef void (*usb_complete_t)(struct urb *); * the transfer interval in the endpoint descriptor is logarithmic. * Device drivers must convert that value to linear units themselves.) * - * Isochronous URBs normally use the URB_ISO_ASAP transfer flag, telling - * the host controller to schedule the transfer as soon as bandwidth - * utilization allows, and then set start_frame to reflect the actual frame - * selected during submission. Otherwise drivers must specify the start_frame - * and handle the case where the transfer can't begin then. However, drivers - * won't know how bandwidth is currently allocated, and while they can - * find the current frame using usb_get_current_frame_number () they can't - * know the range for that frame number. (Ranges for frame counter values - * are HC-specific, and can go from 256 to 65536 frames from "now".) + * If an isochronous endpoint queue isn't already running, the host + * controller will schedule a new URB to start as soon as bandwidth + * utilization allows. If the queue is running then a new URB will be + * scheduled to start in the first transfer slot following the end of the + * preceding URB, if that slot has not already expired. If the slot has + * expired (which can happen when IRQ delivery is delayed for a long time), + * the scheduling behavior depends on the URB_ISO_ASAP flag. If the flag + * is clear then the URB will be scheduled to start in the expired slot, + * implying that some of its packets will not be transferred; if the flag + * is set then the URB will be scheduled in the first unexpired slot, + * breaking the queue's synchronization. Upon URB completion, the + * start_frame field will be set to the (micro)frame number in which the + * transfer was scheduled. Ranges for frame counter values are HC-specific + * and can go from as low as 256 to as high as 65536 frames. * * Isochronous URBs have a different data transfer model, in part because * the quality of service is only "best effort". Callers provide specially -- cgit v1.2.3 From 4534874a8720a361845dce47d310a98e9aac8aeb Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Mon, 8 Oct 2012 15:11:21 +0200 Subject: USB: EHCI: add no_io_watchdog platform_data parameter to ehci-platform Enhance the ehci-platform driver to also accept no_io_watchdog as a platform data parameter. When no_io_watchdog is set to 1, the ehci controller will set ehci->need_io_watchdog to 0. Since most EHCI controllers do need the I/O watchdog to be on, only let those which need it to turn the watchdog off. Make sure that we change need_io_watchdog after the call to ehci_setup() because ehci_setup() will unconditionnaly set need_io_watchdog to 1. Signed-off-by: Florian Fainelli Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/ehci_pdriver.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/ehci_pdriver.h b/include/linux/usb/ehci_pdriver.h index c9d09f8b7ff2..67ac74bde6d0 100644 --- a/include/linux/usb/ehci_pdriver.h +++ b/include/linux/usb/ehci_pdriver.h @@ -29,6 +29,8 @@ * initialization. * @port_power_off: set to 1 if the controller needs to be powered down * after initialization. + * @no_io_watchdog: set to 1 if the controller does not need the I/O + * watchdog to run. * * These are general configuration options for the EHCI controller. All of * these options are activating more or less workarounds for some hardware. @@ -41,6 +43,7 @@ struct usb_ehci_pdata { unsigned big_endian_mmio:1; unsigned port_power_on:1; unsigned port_power_off:1; + unsigned no_io_watchdog:1; /* Turn on all power and clocks */ int (*power_on)(struct platform_device *pdev); -- cgit v1.2.3 From 2b16e39ee0a431d6cf6e6ca33bb08ec7dc82073f Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Mon, 8 Oct 2012 15:11:26 +0200 Subject: USB: ohci: allow platform driver to specify the number of ports This patch modifies the ohci platform driver to accept the num_ports parameter to be set via platform_data. Setting the number of ports must be done after the call to ohci_hcd_init(). Signed-off-by: Florian Fainelli Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/ohci_pdriver.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/ohci_pdriver.h b/include/linux/usb/ohci_pdriver.h index 74e7755168b7..012f2b7eb2b6 100644 --- a/include/linux/usb/ohci_pdriver.h +++ b/include/linux/usb/ohci_pdriver.h @@ -25,6 +25,7 @@ * @big_endian_desc: BE descriptors * @big_endian_mmio: BE registers * @no_big_frame_no: no big endian frame_no shift + * @num_ports: number of ports * * These are general configuration options for the OHCI controller. All of * these options are activating more or less workarounds for some hardware. @@ -33,6 +34,7 @@ struct usb_ohci_pdata { unsigned big_endian_desc:1; unsigned big_endian_mmio:1; unsigned no_big_frame_no:1; + unsigned int num_ports; /* Turn on all power and clocks */ int (*power_on)(struct platform_device *pdev); -- cgit v1.2.3 From 5f986c590fcf4284924fcda991cf14ab32bff49f Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 23 Oct 2012 01:07:27 +0200 Subject: PM / QoS: Prepare device structure for adding more constraint types Currently struct dev_pm_info contains only one PM QoS constraints pointer reserved for latency requirements. Since one more device constraints type (i.e. flags) will be necessary, introduce a new structure, struct dev_pm_qos, that eventually will contain all of the available device PM QoS constraints and replace the "constraints" pointer in struct dev_pm_info with a pointer to the new structure called "qos". Signed-off-by: Rafael J. Wysocki Reviewed-by: Jean Pihet --- include/linux/pm.h | 2 +- include/linux/pm_qos.h | 4 ++++ 2 files changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pm.h b/include/linux/pm.h index 007e687c4f69..0ce6df94221a 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -549,7 +549,7 @@ struct dev_pm_info { struct dev_pm_qos_request *pq_req; #endif struct pm_subsys_data *subsys_data; /* Owned by the subsystem. */ - struct pm_qos_constraints *constraints; + struct dev_pm_qos *qos; }; extern void update_pm_runtime_accounting(struct device *dev); diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 9924ea1f22e0..30e9ad72e797 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -57,6 +57,10 @@ struct pm_qos_constraints { struct blocking_notifier_head *notifiers; }; +struct dev_pm_qos { + struct pm_qos_constraints latency; +}; + /* Action requested to pm_qos_update_target */ enum pm_qos_req_action { PM_QOS_ADD_REQ, /* Add a new request */ -- cgit v1.2.3 From 5efbe4279f959a3f5ed26adf5f05cb78dd1ffa7e Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 23 Oct 2012 01:07:46 +0200 Subject: PM / QoS: Introduce request and constraint data types for PM QoS flags Introduce struct pm_qos_flags_request and struct pm_qos_flags representing PM QoS flags request type and PM QoS flags constraint type, respectively. With these definitions the data structures will be arranged so that the list member of a struct pm_qos_flags object will contain the head of a list of struct pm_qos_flags_request objects representing all of the "flags" requests present for the given device. Then, the effective_flags member of a struct pm_qos_flags object will contain the bitwise OR of the flags members of all the struct pm_qos_flags_request objects in the list. Additionally, introduce helper function pm_qos_update_flags() allowing the caller to manage the list of struct pm_qos_flags_request pointed to by the list member of struct pm_qos_flags. The flags are of type s32 so that the request's "value" field is always of the same type regardless of what kind of request it is (latency requests already have value fields of type s32). Signed-off-by: Rafael J. Wysocki Reviewed-by: Jean Pihet Acked-by: mark gross --- include/linux/pm_qos.h | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 30e9ad72e797..413ada3c7c97 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -33,6 +33,11 @@ struct pm_qos_request { struct delayed_work work; /* for pm_qos_update_request_timeout */ }; +struct pm_qos_flags_request { + struct list_head node; + s32 flags; /* Do not change to 64 bit */ +}; + struct dev_pm_qos_request { struct plist_node node; struct device *dev; @@ -45,8 +50,8 @@ enum pm_qos_type { }; /* - * Note: The lockless read path depends on the CPU accessing - * target_value atomically. Atomic access is only guaranteed on all CPU + * Note: The lockless read path depends on the CPU accessing target_value + * or effective_flags atomically. Atomic access is only guaranteed on all CPU * types linux supports for 32 bit quantites */ struct pm_qos_constraints { @@ -57,6 +62,11 @@ struct pm_qos_constraints { struct blocking_notifier_head *notifiers; }; +struct pm_qos_flags { + struct list_head list; + s32 effective_flags; /* Do not change to 64 bit */ +}; + struct dev_pm_qos { struct pm_qos_constraints latency; }; @@ -75,6 +85,9 @@ static inline int dev_pm_qos_request_active(struct dev_pm_qos_request *req) int pm_qos_update_target(struct pm_qos_constraints *c, struct plist_node *node, enum pm_qos_req_action action, int value); +bool pm_qos_update_flags(struct pm_qos_flags *pqf, + struct pm_qos_flags_request *req, + enum pm_qos_req_action action, s32 val); void pm_qos_add_request(struct pm_qos_request *req, int pm_qos_class, s32 value); void pm_qos_update_request(struct pm_qos_request *req, -- cgit v1.2.3 From 021c870ba4ab4bc9a23d5db4e324f50f26d8ab24 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 23 Oct 2012 01:09:00 +0200 Subject: PM / QoS: Prepare struct dev_pm_qos_request for more request types The subsequent patches will use struct dev_pm_qos_request for representing both latency requests and flags requests. To make that easier, put the node member of struct dev_pm_qos_request (under the name "pnode") into a union called "data" that will represent the request's value and list node depending on its type. Signed-off-by: Rafael J. Wysocki Reviewed-by: Jean Pihet Reviewed-by: mark gross --- include/linux/pm_qos.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 413ada3c7c97..3b9d14964d2b 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -39,7 +39,9 @@ struct pm_qos_flags_request { }; struct dev_pm_qos_request { - struct plist_node node; + union { + struct plist_node pnode; + } data; struct device *dev; }; -- cgit v1.2.3 From ae0fb4b72c8db7e6c4ef32bc58a43a759ad414b9 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 23 Oct 2012 01:09:12 +0200 Subject: PM / QoS: Introduce PM QoS device flags support Modify the device PM QoS core code to support PM QoS flags requests. First, add a new field of type struct pm_qos_flags called "flags" to struct dev_pm_qos for representing the list of PM QoS flags requests for the given device. Accordingly, add a new "type" field to struct dev_pm_qos_request (along with an enum for representing request types) and a new member called "flr" to its data union for representig flags requests. Second, modify dev_pm_qos_add_request(), dev_pm_qos_update_request(), the internal routine apply_constraint() used by them and their existing callers to cover flags requests as well as latency requests. In particular, dev_pm_qos_add_request() gets a new argument called "type" for specifying the type of a request to be added. Finally, introduce two routines, __dev_pm_qos_flags() and dev_pm_qos_flags(), allowing their callers to check which PM QoS flags have been requested for the given device (the caller is supposed to pass the mask of flags to check as the routine's second argument and examine its return value for the result). Signed-off-by: Rafael J. Wysocki Reviewed-by: Jean Pihet Reviewed-by: mark gross --- include/linux/pm_qos.h | 26 +++++++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 3b9d14964d2b..3af7d8573c23 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -20,6 +20,13 @@ enum { PM_QOS_NUM_CLASSES, }; +enum pm_qos_flags_status { + PM_QOS_FLAGS_UNDEFINED = -1, + PM_QOS_FLAGS_NONE, + PM_QOS_FLAGS_SOME, + PM_QOS_FLAGS_ALL, +}; + #define PM_QOS_DEFAULT_VALUE -1 #define PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC) @@ -38,9 +45,16 @@ struct pm_qos_flags_request { s32 flags; /* Do not change to 64 bit */ }; +enum dev_pm_qos_req_type { + DEV_PM_QOS_LATENCY = 1, + DEV_PM_QOS_FLAGS, +}; + struct dev_pm_qos_request { + enum dev_pm_qos_req_type type; union { struct plist_node pnode; + struct pm_qos_flags_request flr; } data; struct device *dev; }; @@ -71,6 +85,7 @@ struct pm_qos_flags { struct dev_pm_qos { struct pm_qos_constraints latency; + struct pm_qos_flags flags; }; /* Action requested to pm_qos_update_target */ @@ -105,10 +120,12 @@ int pm_qos_request_active(struct pm_qos_request *req); s32 pm_qos_read_value(struct pm_qos_constraints *c); #ifdef CONFIG_PM +enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, s32 mask); +enum pm_qos_flags_status dev_pm_qos_flags(struct device *dev, s32 mask); s32 __dev_pm_qos_read_value(struct device *dev); s32 dev_pm_qos_read_value(struct device *dev); int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req, - s32 value); + enum dev_pm_qos_req_type type, s32 value); int dev_pm_qos_update_request(struct dev_pm_qos_request *req, s32 new_value); int dev_pm_qos_remove_request(struct dev_pm_qos_request *req); int dev_pm_qos_add_notifier(struct device *dev, @@ -122,12 +139,19 @@ void dev_pm_qos_constraints_destroy(struct device *dev); int dev_pm_qos_add_ancestor_request(struct device *dev, struct dev_pm_qos_request *req, s32 value); #else +static inline enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, + s32 mask) + { return PM_QOS_FLAGS_UNDEFINED; } +static inline enum pm_qos_flags_status dev_pm_qos_flags(struct device *dev, + s32 mask) + { return PM_QOS_FLAGS_UNDEFINED; } static inline s32 __dev_pm_qos_read_value(struct device *dev) { return 0; } static inline s32 dev_pm_qos_read_value(struct device *dev) { return 0; } static inline int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req, + enum dev_pm_qos_req_type type, s32 value) { return 0; } static inline int dev_pm_qos_update_request(struct dev_pm_qos_request *req, -- cgit v1.2.3 From 8fcbaa2b7f5b70dba9ed1c7f91d0a270ce752e2c Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 18 Oct 2012 22:26:27 +0200 Subject: TTY: devpts, don't care about TTY in devpts_get_tty The goal is to stop setting and using tty->driver_data in devpts code. It should be used solely by the driver's code, pty in this case. First, here we remove TTY from devpts_get_tty and rename it to devpts_get_priv. Note we do not remove type safety, we just shift the [implicit] (void *) cast one layer up. index was unused in devpts_get_tty, so remove that from the prototype too. Signed-off-by: Jiri Slaby Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/devpts_fs.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/devpts_fs.h b/include/linux/devpts_fs.h index 5ce0e5fd712e..de635a5505ea 100644 --- a/include/linux/devpts_fs.h +++ b/include/linux/devpts_fs.h @@ -21,8 +21,8 @@ int devpts_new_index(struct inode *ptmx_inode); void devpts_kill_index(struct inode *ptmx_inode, int idx); /* mknod in devpts */ int devpts_pty_new(struct inode *ptmx_inode, struct tty_struct *tty); -/* get tty structure */ -struct tty_struct *devpts_get_tty(struct inode *pts_inode, int number); +/* get private structure */ +void *devpts_get_priv(struct inode *pts_inode); /* unlink */ void devpts_pty_kill(struct tty_struct *tty); @@ -36,8 +36,7 @@ static inline int devpts_pty_new(struct inode *ptmx_inode, { return -EINVAL; } -static inline struct tty_struct *devpts_get_tty(struct inode *pts_inode, - int number) +static inline void *devpts_get_priv(struct inode *pts_inode) { return NULL; } -- cgit v1.2.3 From 162b97cfa21f816f39ede1944f2a4220e3cf8969 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 18 Oct 2012 22:26:28 +0200 Subject: TTY: devpts, return created inode from devpts_pty_new The goal is to stop setting and using tty->driver_data in devpts code. It should be used solely by the driver's code, pty in this case. For the cleanup of layering, we will need the inode created in devpts_pty_new to be stored into slave's driver_data. So we convert devpts_pty_new to return the inode or an ERR_PTR-encoded error in case of failure. The move of 'inode = new_inode(sb);' from declarators to the code is only cosmetical, but it makes the code easier to read. Signed-off-by: Jiri Slaby Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/devpts_fs.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/devpts_fs.h b/include/linux/devpts_fs.h index de635a5505ea..4ca846f16fe5 100644 --- a/include/linux/devpts_fs.h +++ b/include/linux/devpts_fs.h @@ -20,7 +20,7 @@ int devpts_new_index(struct inode *ptmx_inode); void devpts_kill_index(struct inode *ptmx_inode, int idx); /* mknod in devpts */ -int devpts_pty_new(struct inode *ptmx_inode, struct tty_struct *tty); +struct inode *devpts_pty_new(struct inode *ptmx_inode, struct tty_struct *tty); /* get private structure */ void *devpts_get_priv(struct inode *pts_inode); /* unlink */ @@ -31,10 +31,10 @@ void devpts_pty_kill(struct tty_struct *tty); /* Dummy stubs in the no-pty case */ static inline int devpts_new_index(struct inode *ptmx_inode) { return -EINVAL; } static inline void devpts_kill_index(struct inode *ptmx_inode, int idx) { } -static inline int devpts_pty_new(struct inode *ptmx_inode, - struct tty_struct *tty) +static inline struct inode *devpts_pty_new(struct inode *ptmx_inode, + struct tty_struct *tty) { - return -EINVAL; + return ERR_PTR(-EINVAL); } static inline void *devpts_get_priv(struct inode *pts_inode) { -- cgit v1.2.3 From f11afb61247016162aa92225a337c1575556c9d9 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 18 Oct 2012 22:26:29 +0200 Subject: TTY: devpts, do not set driver_data The goal is to stop setting and using tty->driver_data in devpts code. It should be used solely by the driver's code, pty in this case. Now driver_data are managed only in the pty driver. devpts_pty_new is switched to accept what we used to dig out of tty_struct, i.e. device node number and index. This also removes a note about driver_data being set outside of the driver. Signed-off-by: Jiri Slaby Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/devpts_fs.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/devpts_fs.h b/include/linux/devpts_fs.h index 4ca846f16fe5..251a2090a554 100644 --- a/include/linux/devpts_fs.h +++ b/include/linux/devpts_fs.h @@ -20,11 +20,12 @@ int devpts_new_index(struct inode *ptmx_inode); void devpts_kill_index(struct inode *ptmx_inode, int idx); /* mknod in devpts */ -struct inode *devpts_pty_new(struct inode *ptmx_inode, struct tty_struct *tty); +struct inode *devpts_pty_new(struct inode *ptmx_inode, dev_t device, int index, + void *priv); /* get private structure */ void *devpts_get_priv(struct inode *pts_inode); /* unlink */ -void devpts_pty_kill(struct tty_struct *tty); +void devpts_pty_kill(struct inode *inode); #else @@ -32,7 +33,7 @@ void devpts_pty_kill(struct tty_struct *tty); static inline int devpts_new_index(struct inode *ptmx_inode) { return -EINVAL; } static inline void devpts_kill_index(struct inode *ptmx_inode, int idx) { } static inline struct inode *devpts_pty_new(struct inode *ptmx_inode, - struct tty_struct *tty) + dev_t device, int index, void *priv) { return ERR_PTR(-EINVAL); } @@ -40,7 +41,7 @@ static inline void *devpts_get_priv(struct inode *pts_inode) { return NULL; } -static inline void devpts_pty_kill(struct tty_struct *tty) { } +static inline void devpts_pty_kill(struct inode *inode) { } #endif -- cgit v1.2.3 From 6c633f27ccf783e9a782b84e34aeaeb7949a3359 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 18 Oct 2012 22:26:37 +0200 Subject: TTY: audit, stop accessing tty->icount This is a private member of n_tty. Stop accessing it. Instead, take is as an argument. This is needed to allow clean switch of the private members to a separate private structure of n_tty. Signed-off-by: Jiri Slaby Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index f0b4eb47297c..f02712da5d85 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -535,7 +535,7 @@ extern void n_tty_inherit_ops(struct tty_ldisc_ops *ops); /* tty_audit.c */ #ifdef CONFIG_AUDIT extern void tty_audit_add_data(struct tty_struct *tty, unsigned char *data, - size_t size); + size_t size, unsigned icanon); extern void tty_audit_exit(void); extern void tty_audit_fork(struct signal_struct *sig); extern void tty_audit_tiocsti(struct tty_struct *tty, char ch); @@ -544,7 +544,7 @@ extern int tty_audit_push_task(struct task_struct *tsk, kuid_t loginuid, u32 sessionid); #else static inline void tty_audit_add_data(struct tty_struct *tty, - unsigned char *data, size_t size) + unsigned char *data, size_t size, unsigned icanon) { } static inline void tty_audit_tiocsti(struct tty_struct *tty, char ch) -- cgit v1.2.3 From 53c5ee2cfb4dadc4f5c24fe671e2fbfc034c875e Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 18 Oct 2012 22:26:39 +0200 Subject: TTY: move ldisc data from tty_struct: simple members Here we start moving all the n_tty related bits from tty_struct to the newly defined n_tty_data struct in n_tty proper. In this patch primitive members and bits are moved. The rest will be done per-partes in the next patches. Signed-off-by: Jiri Slaby Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index f02712da5d85..de590cec973b 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -270,13 +270,8 @@ struct tty_struct { * historical reasons, this is included in the tty structure. * Mostly locked by the BKL. */ - unsigned int column; - unsigned char lnext:1, erasing:1, raw:1, real_raw:1, icanon:1; unsigned char closing:1; - unsigned char echo_overrun:1; unsigned short minimum_to_wake; - unsigned long overrun_time; - int num_overrun; unsigned long process_char_map[256/(8*sizeof(unsigned long))]; char *read_buf; int read_head; -- cgit v1.2.3 From 3fe780b379fac2e1eeb5907ee7c864756ce7ec83 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 18 Oct 2012 22:26:40 +0200 Subject: TTY: move ldisc data from tty_struct: bitmaps Here we move bitmaps and use DECLARE_BITMAP to declare them in the new structure. And instead of memset, we use bitmap_zero as it is more appropriate. Signed-off-by: Jiri Slaby Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index de590cec973b..2161e6b5a94c 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -272,12 +272,10 @@ struct tty_struct { */ unsigned char closing:1; unsigned short minimum_to_wake; - unsigned long process_char_map[256/(8*sizeof(unsigned long))]; char *read_buf; int read_head; int read_tail; int read_cnt; - unsigned long read_flags[N_TTY_BUF_SIZE/(8*sizeof(unsigned long))]; unsigned char *echo_buf; unsigned int echo_pos; unsigned int echo_cnt; -- cgit v1.2.3 From ba2e68ac6157004ee4922fb39ebd9459bbae883e Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 18 Oct 2012 22:26:41 +0200 Subject: TTY: move ldisc data from tty_struct: read_* and echo_* and canon_* stuff All the ring-buffers... Signed-off-by: Jiri Slaby Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 10 ---------- 1 file changed, 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index 2161e6b5a94c..226cf20e0150 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -272,16 +272,6 @@ struct tty_struct { */ unsigned char closing:1; unsigned short minimum_to_wake; - char *read_buf; - int read_head; - int read_tail; - int read_cnt; - unsigned char *echo_buf; - unsigned int echo_pos; - unsigned int echo_cnt; - int canon_data; - unsigned long canon_head; - unsigned int canon_column; struct mutex atomic_read_lock; struct mutex atomic_write_lock; struct mutex output_lock; -- cgit v1.2.3 From bddc7152f68bc1e0ee1f55a8055e33531f384101 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 18 Oct 2012 22:26:42 +0200 Subject: TTY: move ldisc data from tty_struct: locks atomic_write_lock is not n_tty specific, so move it up in the tty_struct. And since these are the last ones to move, remove also the comment saying there are some ldisc' members. There are none now. Signed-off-by: Jiri Slaby Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 11 +---------- 1 file changed, 1 insertion(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index 226cf20e0150..08787ece3fdc 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -235,6 +235,7 @@ struct tty_struct { struct mutex ldisc_mutex; struct tty_ldisc *ldisc; + struct mutex atomic_write_lock; struct mutex legacy_mutex; struct mutex termios_mutex; spinlock_t ctrl_lock; @@ -265,20 +266,10 @@ struct tty_struct { #define N_TTY_BUF_SIZE 4096 - /* - * The following is data for the N_TTY line discipline. For - * historical reasons, this is included in the tty structure. - * Mostly locked by the BKL. - */ unsigned char closing:1; unsigned short minimum_to_wake; - struct mutex atomic_read_lock; - struct mutex atomic_write_lock; - struct mutex output_lock; - struct mutex echo_lock; unsigned char *write_buf; int write_cnt; - spinlock_t read_lock; /* If the tty has a pending do_SAK, queue it here - akpm */ struct work_struct SAK_work; struct tty_port *port; -- cgit v1.2.3 From 2fc20661e3171d45e8e58a61eb5c6b7d8d614fde Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 18 Oct 2012 22:26:44 +0200 Subject: TTY: move TTY_FLUSH* flags to tty_port They are only TTY buffers specific. And the buffers will go to tty_port in the next patches. So to remove the need to have both tty_port and tty_struct at some places, let us move the flags to tty_port. Signed-off-by: Jiri Slaby Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index 08787ece3fdc..b4b3c568d242 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -197,6 +197,9 @@ struct tty_port { wait_queue_head_t close_wait; /* Close waiters */ wait_queue_head_t delta_msr_wait; /* Modem status change */ unsigned long flags; /* TTY flags ASY_*/ + unsigned long iflags; /* TTYP_ internal flags */ +#define TTYP_FLUSHING 1 /* Flushing to ldisc in progress */ +#define TTYP_FLUSHPENDING 2 /* Queued buffer flush pending */ unsigned char console:1; /* port is a console */ struct mutex mutex; /* Locking */ struct mutex buf_mutex; /* Buffer alloc lock */ @@ -309,8 +312,6 @@ struct tty_file_private { #define TTY_PTY_LOCK 16 /* pty private */ #define TTY_NO_WRITE_SPLIT 17 /* Preserve write boundaries to driver */ #define TTY_HUPPED 18 /* Post driver->hangup() */ -#define TTY_FLUSHING 19 /* Flushing to ldisc in progress */ -#define TTY_FLUSHPENDING 20 /* Queued buffer flush pending */ #define TTY_HUPPING 21 /* ->hangup() in progress */ #define TTY_WRITE_FLUSH(tty) tty_write_flush((tty)) -- cgit v1.2.3 From 967fab6916681e5ab131fdef1226327b02454f19 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 18 Oct 2012 22:26:46 +0200 Subject: TTY: add port -> tty link For that purpose we have to temporarily introduce a second tty back pointer into tty_port. It is because serial layer, and maybe others, still do not use tty_port_tty_set/get. So that we cannot set the tty_port->tty to NULL at will now. Yes, the fix would be to convert whole serial layer and all its users to tty_port_tty_set/get. However we are in the process of removing the need of tty in most of the call sites, so this would lead to a duplicated work. Instead we have now tty_port->itty (internal tty) which will be used only in flush_to_ldisc. For that one it is ensured that itty is valid wherever the work is run. IOW, the work is synchronously cancelled before we set itty to NULL and also before hangup is processed. After we need only tty_port and not tty_struct in most code, this shall be changed to tty_port_tty_set/get and itty removed completely. Signed-off-by: Jiri Slaby Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index b4b3c568d242..9be74d649a51 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -189,6 +189,7 @@ struct tty_port_operations { struct tty_port { struct tty_struct *tty; /* Back pointer */ + struct tty_struct *itty; /* internal back ptr */ const struct tty_port_operations *ops; /* Port operations */ spinlock_t lock; /* Lock protecting tty field */ int blocked_open; /* Waiting to open */ -- cgit v1.2.3 From ecbbfd44a08fa80e0d664814efd4c187721b85f6 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 18 Oct 2012 22:26:47 +0200 Subject: TTY: move tty buffers to tty_port MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit So this is it. The big step why we did all the work over the past kernel releases. Now everything is prepared, so nothing protects us from doing that big step. | | \ \ nnnn/^l | | | | \ / / | | | '-,.__ => \/ ,-` => | '-,.__ | O __.´´) ( .` | O __.´´) ~~~ ~~ `` ~~~ ~~ The buffers are now in the tty_port structure and we can start teaching the buffer helpers (insert char/string, flip etc.) to use tty_port instead of tty_struct all around. Signed-off-by: Jiri Slaby Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 6 +++--- include/linux/tty_flip.h | 2 +- 2 files changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index 9be74d649a51..d7ff88fb8967 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -188,6 +188,7 @@ struct tty_port_operations { }; struct tty_port { + struct tty_bufhead buf; /* Locked internally */ struct tty_struct *tty; /* Back pointer */ struct tty_struct *itty; /* internal back ptr */ const struct tty_port_operations *ops; /* Port operations */ @@ -259,7 +260,6 @@ struct tty_struct { struct tty_struct *link; struct fasync_struct *fasync; - struct tty_bufhead buf; /* Locked internally */ int alt_speed; /* For magic substitution of 38400 bps */ wait_queue_head_t write_wait; wait_queue_head_t read_wait; @@ -388,9 +388,9 @@ extern void disassociate_ctty(int priv); extern void no_tty(void); extern void tty_flip_buffer_push(struct tty_struct *tty); extern void tty_flush_to_ldisc(struct tty_struct *tty); -extern void tty_buffer_free_all(struct tty_struct *tty); +extern void tty_buffer_free_all(struct tty_port *port); extern void tty_buffer_flush(struct tty_struct *tty); -extern void tty_buffer_init(struct tty_struct *tty); +extern void tty_buffer_init(struct tty_port *port); extern speed_t tty_get_baud_rate(struct tty_struct *tty); extern speed_t tty_termios_baud_rate(struct ktermios *termios); extern speed_t tty_termios_input_baud_rate(struct ktermios *termios); diff --git a/include/linux/tty_flip.h b/include/linux/tty_flip.h index 9239d033a0a3..2002344ed36a 100644 --- a/include/linux/tty_flip.h +++ b/include/linux/tty_flip.h @@ -11,7 +11,7 @@ void tty_schedule_flip(struct tty_struct *tty); static inline int tty_insert_flip_char(struct tty_struct *tty, unsigned char ch, char flag) { - struct tty_buffer *tb = tty->buf.tail; + struct tty_buffer *tb = tty->port->buf.tail; if (tb && tb->used < tb->size) { tb->flag_buf_ptr[tb->used] = flag; tb->char_buf_ptr[tb->used++] = ch; -- cgit v1.2.3 From 0668744f792a737872aa1904010e5fba5f95376b Mon Sep 17 00:00:00 2001 From: Joachim Eastwood Date: Mon, 22 Oct 2012 08:45:34 +0000 Subject: net/at91_ether: add pdata flag for reverse Eth addr This will allow us to remove the last mach include from at91_ether and also make it easier to share address setup with macb. Signed-off-by: Joachim Eastwood Signed-off-by: David S. Miller --- include/linux/platform_data/macb.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/macb.h b/include/linux/platform_data/macb.h index b081c7245ec8..044a124bfbbc 100644 --- a/include/linux/platform_data/macb.h +++ b/include/linux/platform_data/macb.h @@ -12,6 +12,7 @@ struct macb_platform_data { u32 phy_mask; int phy_irq_pin; /* PHY IRQ */ u8 is_rmii; /* using RMII interface? */ + u8 rev_eth_addr; /* reverse Ethernet address byte order */ }; #endif /* __MACB_PDATA_H__ */ -- cgit v1.2.3 From 51615edd0a41b36f69858b9be1fbbf6a3de84f82 Mon Sep 17 00:00:00 2001 From: Greg Suarez Date: Mon, 22 Oct 2012 10:56:29 +0000 Subject: USB: cdc: add MBIM constants and structures MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Based on revision 1.0 of "Universal Serial Bus Communications Class Subclass Specification for Mobile Broadband Interface Model" available from www.usb.org Signed-off-by: Greg Suarez [bmork: added DSS defines] Signed-off-by: Bjørn Mork Acked-by: Greg Kroah-Hartman Signed-off-by: David S. Miller --- include/linux/usb/cdc.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/cdc.h b/include/linux/usb/cdc.h index 81a927930bfd..f35aa0a338c7 100644 --- a/include/linux/usb/cdc.h +++ b/include/linux/usb/cdc.h @@ -19,6 +19,7 @@ #define USB_CDC_SUBCLASS_OBEX 0x0b #define USB_CDC_SUBCLASS_EEM 0x0c #define USB_CDC_SUBCLASS_NCM 0x0d +#define USB_CDC_SUBCLASS_MBIM 0x0e #define USB_CDC_PROTO_NONE 0 @@ -33,6 +34,7 @@ #define USB_CDC_PROTO_EEM 7 #define USB_CDC_NCM_PROTO_NTB 1 +#define USB_CDC_MBIM_PROTO_NTB 2 /*-------------------------------------------------------------------------*/ @@ -53,6 +55,7 @@ #define USB_CDC_DMM_TYPE 0x14 #define USB_CDC_OBEX_TYPE 0x15 #define USB_CDC_NCM_TYPE 0x1a +#define USB_CDC_MBIM_TYPE 0x1b /* "Header Functional Descriptor" from CDC spec 5.2.3.1 */ struct usb_cdc_header_desc { @@ -187,6 +190,21 @@ struct usb_cdc_ncm_desc { __le16 bcdNcmVersion; __u8 bmNetworkCapabilities; } __attribute__ ((packed)); + +/* "MBIM Control Model Functional Descriptor" */ +struct usb_cdc_mbim_desc { + __u8 bLength; + __u8 bDescriptorType; + __u8 bDescriptorSubType; + + __le16 bcdMBIMVersion; + __le16 wMaxControlMessage; + __u8 bNumberFilters; + __u8 bMaxFilterSize; + __le16 wMaxSegmentSize; + __u8 bmNetworkCapabilities; +} __attribute__ ((packed)); + /*-------------------------------------------------------------------------*/ /* @@ -332,6 +350,11 @@ struct usb_cdc_ncm_nth32 { #define USB_CDC_NCM_NDP32_CRC_SIGN 0x316D636E /* ncm1 */ #define USB_CDC_NCM_NDP32_NOCRC_SIGN 0x306D636E /* ncm0 */ +#define USB_CDC_MBIM_NDP16_IPS_SIGN 0x00535049 /* IPS : IPS0 for now */ +#define USB_CDC_MBIM_NDP32_IPS_SIGN 0x00737069 /* ips : ips0 for now */ +#define USB_CDC_MBIM_NDP16_DSS_SIGN 0x00535344 /* DSS */ +#define USB_CDC_MBIM_NDP32_DSS_SIGN 0x00737364 /* dss */ + /* 16-bit NCM Datagram Pointer Entry */ struct usb_cdc_ncm_dpe16 { __le16 wDatagramIndex; -- cgit v1.2.3 From c91ce3b6bff780453283a5882ecd54f267f4682f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Mon, 22 Oct 2012 10:56:35 +0000 Subject: net: cdc_ncm: export shared symbols and definitions MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Move symbols and definitons which can be shared with a MBIM driver in a new header. Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller --- include/linux/usb/cdc_ncm.h | 124 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 124 insertions(+) create mode 100644 include/linux/usb/cdc_ncm.h (limited to 'include/linux') diff --git a/include/linux/usb/cdc_ncm.h b/include/linux/usb/cdc_ncm.h new file mode 100644 index 000000000000..d1719a72f7d2 --- /dev/null +++ b/include/linux/usb/cdc_ncm.h @@ -0,0 +1,124 @@ +/* + * Copyright (C) ST-Ericsson 2010-2012 + * Contact: Alexey Orishko + * Original author: Hans Petter Selasky + * + * USB Host Driver for Network Control Model (NCM) + * http://www.usb.org/developers/devclass_docs/NCM10.zip + * + * The NCM encoding, decoding and initialization logic + * derives from FreeBSD 8.x. if_cdce.c and if_cdcereg.h + * + * This software is available to you under a choice of one of two + * licenses. You may choose this file to be licensed under the terms + * of the GNU General Public License (GPL) Version 2 or the 2-clause + * BSD license listed below: + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* CDC NCM subclass 3.2.1 */ +#define USB_CDC_NCM_NDP16_LENGTH_MIN 0x10 + +/* Maximum NTB length */ +#define CDC_NCM_NTB_MAX_SIZE_TX 32768 /* bytes */ +#define CDC_NCM_NTB_MAX_SIZE_RX 32768 /* bytes */ + +/* Minimum value for MaxDatagramSize, ch. 6.2.9 */ +#define CDC_NCM_MIN_DATAGRAM_SIZE 1514 /* bytes */ + +/* Minimum value for MaxDatagramSize, ch. 8.1.3 */ +#define CDC_MBIM_MIN_DATAGRAM_SIZE 2048 /* bytes */ + +#define CDC_NCM_MIN_TX_PKT 512 /* bytes */ + +/* Default value for MaxDatagramSize */ +#define CDC_NCM_MAX_DATAGRAM_SIZE 8192 /* bytes */ + +/* + * Maximum amount of datagrams in NCM Datagram Pointer Table, not counting + * the last NULL entry. + */ +#define CDC_NCM_DPT_DATAGRAMS_MAX 40 + +/* Restart the timer, if amount of datagrams is less than given value */ +#define CDC_NCM_RESTART_TIMER_DATAGRAM_CNT 3 +#define CDC_NCM_TIMER_PENDING_CNT 2 +#define CDC_NCM_TIMER_INTERVAL (400UL * NSEC_PER_USEC) + +/* The following macro defines the minimum header space */ +#define CDC_NCM_MIN_HDR_SIZE \ + (sizeof(struct usb_cdc_ncm_nth16) + sizeof(struct usb_cdc_ncm_ndp16) + \ + (CDC_NCM_DPT_DATAGRAMS_MAX + 1) * sizeof(struct usb_cdc_ncm_dpe16)) + +#define CDC_NCM_NDP_SIZE \ + (sizeof(struct usb_cdc_ncm_ndp16) + \ + (CDC_NCM_DPT_DATAGRAMS_MAX + 1) * sizeof(struct usb_cdc_ncm_dpe16)) + +struct cdc_ncm_ctx { + struct usb_cdc_ncm_ntb_parameters ncm_parm; + struct hrtimer tx_timer; + struct tasklet_struct bh; + + const struct usb_cdc_ncm_desc *func_desc; + const struct usb_cdc_mbim_desc *mbim_desc; + const struct usb_cdc_header_desc *header_desc; + const struct usb_cdc_union_desc *union_desc; + const struct usb_cdc_ether_desc *ether_desc; + + struct net_device *netdev; + struct usb_device *udev; + struct usb_host_endpoint *in_ep; + struct usb_host_endpoint *out_ep; + struct usb_host_endpoint *status_ep; + struct usb_interface *intf; + struct usb_interface *control; + struct usb_interface *data; + + struct sk_buff *tx_curr_skb; + struct sk_buff *tx_rem_skb; + __le32 tx_rem_sign; + + spinlock_t mtx; + atomic_t stop; + + u32 tx_timer_pending; + u32 tx_curr_frame_num; + u32 rx_speed; + u32 tx_speed; + u32 rx_max; + u32 tx_max; + u32 max_datagram_size; + u16 tx_max_datagrams; + u16 tx_remainder; + u16 tx_modulus; + u16 tx_ndp_modulus; + u16 tx_seq; + u16 rx_seq; + u16 connected; +}; + +extern int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_altsetting); +extern void cdc_ncm_unbind(struct usbnet *dev, struct usb_interface *intf); +extern struct sk_buff *cdc_ncm_fill_tx_frame(struct cdc_ncm_ctx *ctx, struct sk_buff *skb, __le32 sign); +extern int cdc_ncm_rx_verify_nth16(struct cdc_ncm_ctx *ctx, struct sk_buff *skb_in); +extern int cdc_ncm_rx_verify_ndp16(struct sk_buff *skb_in, int ndpoffset); -- cgit v1.2.3 From 9bf211a30b3f158c39cf1c6adb3a9388d41740ce Mon Sep 17 00:00:00 2001 From: Greg Suarez Date: Mon, 22 Oct 2012 10:56:36 +0000 Subject: net: cdc_mbim: adding MBIM driver MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The CDC Mobile Broadband Interface Model (MBIM) specification extends CDC NCM by - removing the redundant ethernet header from the point-to-point USB channel - adding support for multiple IP (v4 and/or v6) sessions multiplexed on the same USB channel - adding a MBIM control channel encapsulated in CDC - adding Device Service Streams (DSS), which are non IP generic data streams multiplexed on the same USB channel as the IP sessions MBIM devices are managed using the dedicated control channel, and no data will flow on the data channel until a control session has been established. This driver has no knowledge of MBIM control messages. It just exports the control channel to a /dev/cdc-wdmX character device for userspace management applications. Such an application is therefore required to use this driver. This patch implements basic MBIM support, reusing the NCM and WDM driver APIs, currently limited to IP sessions with SessionID 0. DSS and multiplexed IP sessions are not yet supported. Signed-off-by: Greg Suarez Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller --- include/linux/usb/cdc_ncm.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/cdc_ncm.h b/include/linux/usb/cdc_ncm.h index d1719a72f7d2..3b8f9d4fc3fe 100644 --- a/include/linux/usb/cdc_ncm.h +++ b/include/linux/usb/cdc_ncm.h @@ -36,6 +36,12 @@ * SUCH DAMAGE. */ +#define CDC_NCM_COMM_ALTSETTING_NCM 0 +#define CDC_NCM_COMM_ALTSETTING_MBIM 1 + +#define CDC_NCM_DATA_ALTSETTING_NCM 1 +#define CDC_NCM_DATA_ALTSETTING_MBIM 2 + /* CDC NCM subclass 3.2.1 */ #define USB_CDC_NCM_NDP16_LENGTH_MIN 0x10 @@ -74,6 +80,10 @@ (sizeof(struct usb_cdc_ncm_ndp16) + \ (CDC_NCM_DPT_DATAGRAMS_MAX + 1) * sizeof(struct usb_cdc_ncm_dpe16)) +#define cdc_ncm_comm_intf_is_mbim(x) ((x)->desc.bInterfaceSubClass == USB_CDC_SUBCLASS_MBIM && \ + (x)->desc.bInterfaceProtocol == USB_CDC_PROTO_NONE) +#define cdc_ncm_data_intf_is_mbim(x) ((x)->desc.bInterfaceProtocol == USB_CDC_MBIM_PROTO_NTB) + struct cdc_ncm_ctx { struct usb_cdc_ncm_ntb_parameters ncm_parm; struct hrtimer tx_timer; -- cgit v1.2.3 From 8ca40a70a70988c0bdea106c894843f763ca2989 Mon Sep 17 00:00:00 2001 From: Christoffer Dall Date: Sun, 14 Oct 2012 23:10:18 -0400 Subject: KVM: Take kvm instead of vcpu to mmu_notifier_retry The mmu_notifier_retry is not specific to any vcpu (and never will be) so only take struct kvm as a parameter. The motivation is the ARM mmu code that needs to call this from somewhere where we long let go of the vcpu pointer. Signed-off-by: Christoffer Dall Signed-off-by: Avi Kivity --- include/linux/kvm_host.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 6afc5be2615e..82e2c783a21e 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -841,9 +841,9 @@ extern struct kvm_stats_debugfs_item debugfs_entries[]; extern struct dentry *kvm_debugfs_dir; #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) -static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq) +static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq) { - if (unlikely(vcpu->kvm->mmu_notifier_count)) + if (unlikely(kvm->mmu_notifier_count)) return 1; /* * Ensure the read of mmu_notifier_count happens before the read @@ -856,7 +856,7 @@ static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_se * can't rely on kvm->mmu_lock to keep things ordered. */ smp_rmb(); - if (vcpu->kvm->mmu_notifier_seq != mmu_seq) + if (kvm->mmu_notifier_seq != mmu_seq) return 1; return 0; } -- cgit v1.2.3 From 4d9a5d4319e22670ec6d6227e12b54f361c46d0f Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Thu, 11 Oct 2012 01:47:16 +0200 Subject: rcu: Remove rcu_switch() It's only there to call rcu_user_hooks_switch(). Let's just call rcu_user_hooks_switch() directly, we don't need this function in the middle. Signed-off-by: Frederic Weisbecker Cc: Josh Triplett Cc: Peter Zijlstra Cc: Richard Weinberger Signed-off-by: Paul E. McKenney --- include/linux/rcupdate.h | 2 ++ include/linux/sched.h | 8 -------- 2 files changed, 2 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 7c968e4f929e..5d009def7c0c 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -204,6 +204,8 @@ static inline void rcu_user_enter(void) { } static inline void rcu_user_exit(void) { } static inline void rcu_user_enter_after_irq(void) { } static inline void rcu_user_exit_after_irq(void) { } +static inline void rcu_user_hooks_switch(struct task_struct *prev, + struct task_struct *next) { } #endif /* CONFIG_RCU_USER_QS */ extern void exit_rcu(void); diff --git a/include/linux/sched.h b/include/linux/sched.h index 0dd42a02df2e..432cc5e1bbee 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1844,14 +1844,6 @@ static inline void rcu_copy_process(struct task_struct *p) #endif -static inline void rcu_switch(struct task_struct *prev, - struct task_struct *next) -{ -#ifdef CONFIG_RCU_USER_QS - rcu_user_hooks_switch(prev, next); -#endif -} - static inline void tsk_restore_flags(struct task_struct *task, unsigned long orig_flags, unsigned long flags) { -- cgit v1.2.3 From 4e87b2d7e887df3fe251dd7f702591a3acf369ca Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Sat, 13 Oct 2012 01:14:14 +0800 Subject: srcu: Credit Lai Jiangshan with SRCU rewrite Lai Jiangshan rewrote SRCU, so this commit ensures that he gets his proper share of blame^Wcredit. Signed-off-by: Lai Jiangshan Signed-off-by: Paul E. McKenney --- include/linux/srcu.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/srcu.h b/include/linux/srcu.h index 55a5c52cbb25..a55ddb19053c 100644 --- a/include/linux/srcu.h +++ b/include/linux/srcu.h @@ -16,8 +16,10 @@ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * Copyright (C) IBM Corporation, 2006 + * Copyright (C) Fujitsu, 2012 * * Author: Paul McKenney + * Lai Jiangshan * * For detailed explanation of Read-Copy Update mechanism see - * Documentation/RCU/ *.txt -- cgit v1.2.3 From f2ebfbc991044fd5b89d4529741d7500feb37fbd Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Sat, 13 Oct 2012 01:14:15 +0800 Subject: srcu: Export process_srcu() Because process_srcu() will be used in DEFINE_SRCU(), which is a macro that could be expanded pretty much anywhere, it can no longer be static. Note that process_srcu() is still internal to srcu.h. Signed-off-by: Lai Jiangshan Signed-off-by: Paul E. McKenney --- include/linux/srcu.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/srcu.h b/include/linux/srcu.h index a55ddb19053c..5cce128f196c 100644 --- a/include/linux/srcu.h +++ b/include/linux/srcu.h @@ -78,6 +78,8 @@ int init_srcu_struct(struct srcu_struct *sp); #endif /* #else #ifdef CONFIG_DEBUG_LOCK_ALLOC */ +void process_srcu(struct work_struct *work); + /** * call_srcu() - Queue a callback for invocation after an SRCU grace period * @sp: srcu_struct in queue the callback -- cgit v1.2.3 From b637a328bd4f43a0e146d1eef0142b650ba0d644 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Wed, 19 Sep 2012 16:58:38 -0700 Subject: rcu: Print remote CPU's stacks in stall warnings The RCU CPU stall warnings rely on trigger_all_cpu_backtrace() to do NMI-based dump of the stack traces of all CPUs. Unfortunately, a number of architectures do not implement trigger_all_cpu_backtrace(), in which case RCU falls back to just dumping the stack of the running CPU. This is unhelpful in the case where the running CPU has detected that some other CPU has stalled. This commit therefore makes the running CPU dump the stacks of the tasks running on the stalled CPUs. Signed-off-by: Paul E. McKenney Signed-off-by: Paul E. McKenney --- include/linux/sched.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 0dd42a02df2e..ba69b5adea30 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -109,6 +109,8 @@ extern void update_cpu_load_nohz(void); extern unsigned long get_parent_ip(unsigned long addr); +extern void dump_cpu_task(int cpu); + struct seq_file; struct cfs_rq; struct task_group; -- cgit v1.2.3 From e39473d0b9448e770f49b0b15e514be884264438 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 24 Oct 2012 02:08:18 +0200 Subject: PM / QoS: Make it possible to expose PM QoS device flags to user space Define two device PM QoS flags, PM_QOS_FLAG_NO_POWER_OFF and PM_QOS_FLAG_REMOTE_WAKEUP, and introduce routines dev_pm_qos_expose_flags() and dev_pm_qos_hide_flags() allowing the caller to expose those two flags to user space or to hide them from it, respectively. After the flags have been exposed, user space will see two additional sysfs attributes, pm_qos_no_power_off and pm_qos_remote_wakeup, under the device's /sys/devices/.../power/ directory. Then, writing 1 to one of them will update the PM QoS flags request owned by user space so that the corresponding flag is requested to be set. In turn, writing 0 to one of them will cause the corresponding flag in the user space's request to be cleared (however, the owners of the other PM QoS flags requests for the same device may still request the flag to be set and it may be effectively set even if user space doesn't request that). Signed-off-by: Rafael J. Wysocki Reviewed-by: Jean Pihet Acked-by: mark gross --- include/linux/pm.h | 1 - include/linux/pm_qos.h | 26 ++++++++++++++++++++++++++ 2 files changed, 26 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pm.h b/include/linux/pm.h index 0ce6df94221a..03d7bb145311 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -546,7 +546,6 @@ struct dev_pm_info { unsigned long active_jiffies; unsigned long suspended_jiffies; unsigned long accounting_timestamp; - struct dev_pm_qos_request *pq_req; #endif struct pm_subsys_data *subsys_data; /* Owned by the subsystem. */ struct dev_pm_qos *qos; diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 3af7d8573c23..5a95013905c8 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -34,6 +34,9 @@ enum pm_qos_flags_status { #define PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE 0 #define PM_QOS_DEV_LAT_DEFAULT_VALUE 0 +#define PM_QOS_FLAG_NO_POWER_OFF (1 << 0) +#define PM_QOS_FLAG_REMOTE_WAKEUP (1 << 1) + struct pm_qos_request { struct plist_node node; int pm_qos_class; @@ -86,6 +89,8 @@ struct pm_qos_flags { struct dev_pm_qos { struct pm_qos_constraints latency; struct pm_qos_flags flags; + struct dev_pm_qos_request *latency_req; + struct dev_pm_qos_request *flags_req; }; /* Action requested to pm_qos_update_target */ @@ -187,10 +192,31 @@ static inline int dev_pm_qos_add_ancestor_request(struct device *dev, #ifdef CONFIG_PM_RUNTIME int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value); void dev_pm_qos_hide_latency_limit(struct device *dev); +int dev_pm_qos_expose_flags(struct device *dev, s32 value); +void dev_pm_qos_hide_flags(struct device *dev); +int dev_pm_qos_update_flags(struct device *dev, s32 mask, bool set); + +static inline s32 dev_pm_qos_requested_latency(struct device *dev) +{ + return dev->power.qos->latency_req->data.pnode.prio; +} + +static inline s32 dev_pm_qos_requested_flags(struct device *dev) +{ + return dev->power.qos->flags_req->data.flr.flags; +} #else static inline int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value) { return 0; } static inline void dev_pm_qos_hide_latency_limit(struct device *dev) {} +static inline int dev_pm_qos_expose_flags(struct device *dev, s32 value) + { return 0; } +static inline void dev_pm_qos_hide_flags(struct device *dev) {} +static inline int dev_pm_qos_update_flags(struct device *dev, s32 m, bool set) + { return 0; } + +static inline s32 dev_pm_qos_requested_latency(struct device *dev) { return 0; } +static inline s32 dev_pm_qos_requested_flags(struct device *dev) { return 0; } #endif #endif -- cgit v1.2.3 From 9d85f21c94f7f7a84d0ba686c58aa6d9da58fdbb Mon Sep 17 00:00:00 2001 From: Paul Turner Date: Thu, 4 Oct 2012 13:18:29 +0200 Subject: sched: Track the runnable average on a per-task entity basis Instead of tracking averaging the load parented by a cfs_rq, we can track entity load directly. With the load for a given cfs_rq then being the sum of its children. To do this we represent the historical contribution to runnable average within each trailing 1024us of execution as the coefficients of a geometric series. We can express this for a given task t as: runnable_sum(t) = \Sum u_i * y^i, runnable_avg_period(t) = \Sum 1024 * y^i load(t) = weight_t * runnable_sum(t) / runnable_avg_period(t) Where: u_i is the usage in the last i`th 1024us period (approximately 1ms) ~ms and y is chosen such that y^k = 1/2. We currently choose k to be 32 which roughly translates to about a sched period. Signed-off-by: Paul Turner Reviewed-by: Ben Segall Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/20120823141506.372695337@google.com Signed-off-by: Ingo Molnar --- include/linux/sched.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 0dd42a02df2e..418fc6d8a4da 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1095,6 +1095,16 @@ struct load_weight { unsigned long weight, inv_weight; }; +struct sched_avg { + /* + * These sums represent an infinite geometric series and so are bound + * above by 1024/(1-y). Thus we only need a u32 to store them for for all + * choices of y < 1-2^(-32)*1024. + */ + u32 runnable_avg_sum, runnable_avg_period; + u64 last_runnable_update; +}; + #ifdef CONFIG_SCHEDSTATS struct sched_statistics { u64 wait_start; @@ -1155,6 +1165,9 @@ struct sched_entity { /* rq "owned" by this entity/group: */ struct cfs_rq *my_q; #endif +#ifdef CONFIG_SMP + struct sched_avg avg; +#endif }; struct sched_rt_entity { -- cgit v1.2.3 From 2dac754e10a5d41d94d2d2365c0345d4f215a266 Mon Sep 17 00:00:00 2001 From: Paul Turner Date: Thu, 4 Oct 2012 13:18:30 +0200 Subject: sched: Aggregate load contributed by task entities on parenting cfs_rq For a given task t, we can compute its contribution to load as: task_load(t) = runnable_avg(t) * weight(t) On a parenting cfs_rq we can then aggregate: runnable_load(cfs_rq) = \Sum task_load(t), for all runnable children t Maintain this bottom up, with task entities adding their contributed load to the parenting cfs_rq sum. When a task entity's load changes we add the same delta to the maintained sum. Signed-off-by: Paul Turner Reviewed-by: Ben Segall Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/20120823141506.514678907@google.com Signed-off-by: Ingo Molnar --- include/linux/sched.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 418fc6d8a4da..81d8b1ba4100 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1103,6 +1103,7 @@ struct sched_avg { */ u32 runnable_avg_sum, runnable_avg_period; u64 last_runnable_update; + unsigned long load_avg_contrib; }; #ifdef CONFIG_SCHEDSTATS -- cgit v1.2.3 From 9ee474f55664ff63111c843099d365e7ecffb56f Mon Sep 17 00:00:00 2001 From: Paul Turner Date: Thu, 4 Oct 2012 13:18:30 +0200 Subject: sched: Maintain the load contribution of blocked entities We are currently maintaining: runnable_load(cfs_rq) = \Sum task_load(t) For all running children t of cfs_rq. While this can be naturally updated for tasks in a runnable state (as they are scheduled); this does not account for the load contributed by blocked task entities. This can be solved by introducing a separate accounting for blocked load: blocked_load(cfs_rq) = \Sum runnable(b) * weight(b) Obviously we do not want to iterate over all blocked entities to account for their decay, we instead observe that: runnable_load(t) = \Sum p_i*y^i and that to account for an additional idle period we only need to compute: y*runnable_load(t). This means that we can compute all blocked entities at once by evaluating: blocked_load(cfs_rq)` = y * blocked_load(cfs_rq) Finally we maintain a decay counter so that when a sleeping entity re-awakens we can determine how much of its load should be removed from the blocked sum. Signed-off-by: Paul Turner Reviewed-by: Ben Segall Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/20120823141506.585389902@google.com Signed-off-by: Ingo Molnar --- include/linux/sched.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 81d8b1ba4100..b1831accfd89 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1103,6 +1103,7 @@ struct sched_avg { */ u32 runnable_avg_sum, runnable_avg_period; u64 last_runnable_update; + s64 decay_count; unsigned long load_avg_contrib; }; -- cgit v1.2.3 From 0a74bef8bed18dc6889e9bc37ea1050a50c86c89 Mon Sep 17 00:00:00 2001 From: Paul Turner Date: Thu, 4 Oct 2012 13:18:30 +0200 Subject: sched: Add an rq migration call-back to sched_class Since we are now doing bottom up load accumulation we need explicit notification when a task has been re-parented so that the old hierarchy can be updated. Adds: migrate_task_rq(struct task_struct *p, int next_cpu) (The alternative is to do this out of __set_task_cpu, but it was suggested that this would be a cleaner encapsulation.) Signed-off-by: Paul Turner Reviewed-by: Ben Segall Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/20120823141506.660023400@google.com Signed-off-by: Ingo Molnar --- include/linux/sched.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index b1831accfd89..e483ccb08ce6 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1061,6 +1061,7 @@ struct sched_class { #ifdef CONFIG_SMP int (*select_task_rq)(struct task_struct *p, int sd_flag, int flags); + void (*migrate_task_rq)(struct task_struct *p, int next_cpu); void (*pre_schedule) (struct rq *this_rq, struct task_struct *task); void (*post_schedule) (struct rq *this_rq); -- cgit v1.2.3 From f4e26b120b9de84cb627bc7361ba43cfdc51341f Mon Sep 17 00:00:00 2001 From: Paul Turner Date: Thu, 4 Oct 2012 13:18:32 +0200 Subject: sched: Introduce temporary FAIR_GROUP_SCHED dependency for load-tracking While per-entity load-tracking is generally useful, beyond computing shares distribution, e.g. runnable based load-balance (in progress), governors, power-management, etc. These facilities are not yet consumers of this data. This may be trivially reverted when the information is required; but avoid paying the overhead for calculations we will not use until then. Signed-off-by: Paul Turner Reviewed-by: Ben Segall Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/20120823141507.422162369@google.com Signed-off-by: Ingo Molnar --- include/linux/sched.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index e483ccb08ce6..e1581a029e3d 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1168,7 +1168,13 @@ struct sched_entity { /* rq "owned" by this entity/group: */ struct cfs_rq *my_q; #endif -#ifdef CONFIG_SMP +/* + * Load-tracking only depends on SMP, FAIR_GROUP_SCHED dependency below may be + * removed when useful for applications beyond shares distribution (e.g. + * load-balance). + */ +#if defined(CONFIG_SMP) && defined(CONFIG_FAIR_GROUP_SCHED) + /* Per-entity load-tracking */ struct sched_avg avg; #endif }; -- cgit v1.2.3 From 1b4f59e356cc94929305bd107b7f38eec62715ad Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Mon, 22 Oct 2012 18:05:36 +0400 Subject: slub: Commonize slab_cache field in struct page Right now, slab and slub have fields in struct page to derive which cache a page belongs to, but they do it slightly differently. slab uses a field called slab_cache, that lives in the third double word. slub, uses a field called "slab", living outside of the doublewords area. Ideally, we could use the same field for this. Since slub heavily makes use of the doubleword region, there isn't really much room to move slub's slab_cache field around. Since slab does not have such strict placement restrictions, we can move it outside the doubleword area. The naming used by slab, "slab_cache", is less confusing, and it is preferred over slub's generic "slab". Signed-off-by: Glauber Costa Acked-by: Christoph Lameter CC: David Rientjes Signed-off-by: Pekka Enberg --- include/linux/mm_types.h | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 31f8a3af7d94..2fef4e720e79 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -128,10 +128,7 @@ struct page { }; struct list_head list; /* slobs list of pages */ - struct { /* slab fields */ - struct kmem_cache *slab_cache; - struct slab *slab_page; - }; + struct slab *slab_page; /* slab fields */ }; /* Remainder is not double word aligned */ @@ -146,7 +143,7 @@ struct page { #if USE_SPLIT_PTLOCKS spinlock_t ptl; #endif - struct kmem_cache *slab; /* SLUB: Pointer to slab */ + struct kmem_cache *slab_cache; /* SL[AU]B: Pointer to slab */ struct page *first_page; /* Compound tail pages */ }; -- cgit v1.2.3 From 6c9c6d6301287e369a754d628230fa6e50cdb74b Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Mon, 8 Oct 2012 11:08:06 -0600 Subject: dma-debug: New interfaces to debug dma mapping errors Add dma-debug interface debug_dma_mapping_error() to debug drivers that fail to check dma mapping errors on addresses returned by dma_map_single() and dma_map_page() interfaces. This interface clears a flag set by debug_dma_map_page() to indicate that dma_mapping_error() has been called by the driver. When driver does unmap, debug_dma_unmap() checks the flag and if this flag is still set, prints warning message that includes call trace that leads up to the unmap. This interface can be called from dma_mapping_error() routines to enable dma mapping error check debugging. Tested: Intel iommu and swiotlb (iommu=soft) on x86-64 with CONFIG_DMA_API_DEBUG enabled and disabled. Signed-off-by: Shuah Khan Reviewed-by: Konrad Rzeszutek Wilk Signed-off-by: Joerg Roedel --- include/linux/dma-debug.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dma-debug.h b/include/linux/dma-debug.h index 171ad8aedc83..fc0e34ce038f 100644 --- a/include/linux/dma-debug.h +++ b/include/linux/dma-debug.h @@ -39,6 +39,8 @@ extern void debug_dma_map_page(struct device *dev, struct page *page, int direction, dma_addr_t dma_addr, bool map_single); +extern void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr); + extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr, size_t size, int direction, bool map_single); @@ -105,6 +107,11 @@ static inline void debug_dma_map_page(struct device *dev, struct page *page, { } +static inline void debug_dma_mapping_error(struct device *dev, + dma_addr_t dma_addr) +{ +} + static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr, size_t size, int direction, bool map_single) -- cgit v1.2.3 From c30186e51e537d3ae8b1134983c1a5b4db3a8840 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 24 Oct 2012 14:19:16 -0700 Subject: USB: ezusb: unexport some functions that aren't being used MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When the ezusb code was split out, support was added for the fx2 chip type, but no one is using these functions, so comment it out. If someone needs it, it can be added back in the future. Also properly include into the ezusb.c file, to ensure we catch any function prototype mis-matches Reported-by: Fengguang Wu Cc: René Bürgel Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/ezusb.h | 8 -------- 1 file changed, 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/ezusb.h b/include/linux/usb/ezusb.h index fc618d8d1e92..639ee45779fb 100644 --- a/include/linux/usb/ezusb.h +++ b/include/linux/usb/ezusb.h @@ -1,16 +1,8 @@ #ifndef __EZUSB_H #define __EZUSB_H - -extern int ezusb_writememory(struct usb_device *dev, int address, - unsigned char *data, int length, __u8 bRequest); - extern int ezusb_fx1_set_reset(struct usb_device *dev, unsigned char reset_bit); -extern int ezusb_fx2_set_reset(struct usb_device *dev, unsigned char reset_bit); - extern int ezusb_fx1_ihex_firmware_download(struct usb_device *dev, const char *firmware_path); -extern int ezusb_fx2_ihex_firmware_download(struct usb_device *dev, - const char *firmware_path); #endif /* __EZUSB_H */ -- cgit v1.2.3 From e8c4a7acc9ec0ee82feedcdc3c6d0ee44d67918a Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 24 Oct 2012 14:26:19 -0700 Subject: ARM: OMAP: move OMAP USB platform data to In order to make single zImage work for ARM architecture, we need to make sure we don't depend on private headers. Move USB platform_data to and add a minimal drivers/mfd/usb-omap.h. Cc: Samuel Ortiz Cc: Alan Stern Cc: Greg Kroah-Hartman Cc: Partha Basak Cc: Keshava Munegowda Cc: linux-usb@vger.kernel.org Signed-off-by: Felipe Balbi [tony@atomide.com: updated for local mfd/usb-omap.h] Signed-off-by: Tony Lindgren --- include/linux/platform_data/usb-omap.h | 80 ++++++++++++++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 include/linux/platform_data/usb-omap.h (limited to 'include/linux') diff --git a/include/linux/platform_data/usb-omap.h b/include/linux/platform_data/usb-omap.h new file mode 100644 index 000000000000..8570bcfe6311 --- /dev/null +++ b/include/linux/platform_data/usb-omap.h @@ -0,0 +1,80 @@ +/* + * usb-omap.h - Platform data for the various OMAP USB IPs + * + * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com + * + * This software is distributed under the terms of the GNU General Public + * License ("GPL") version 2, as published by the Free Software Foundation. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#define OMAP3_HS_USB_PORTS 3 + +enum usbhs_omap_port_mode { + OMAP_USBHS_PORT_MODE_UNUSED, + OMAP_EHCI_PORT_MODE_PHY, + OMAP_EHCI_PORT_MODE_TLL, + OMAP_EHCI_PORT_MODE_HSIC, + OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0, + OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM, + OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0, + OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM, + OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0, + OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM, + OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0, + OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM, + OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0, + OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM +}; + +struct usbtll_omap_platform_data { + enum usbhs_omap_port_mode port_mode[OMAP3_HS_USB_PORTS]; +}; + +struct ehci_hcd_omap_platform_data { + enum usbhs_omap_port_mode port_mode[OMAP3_HS_USB_PORTS]; + int reset_gpio_port[OMAP3_HS_USB_PORTS]; + struct regulator *regulator[OMAP3_HS_USB_PORTS]; + unsigned phy_reset:1; +}; + +struct ohci_hcd_omap_platform_data { + enum usbhs_omap_port_mode port_mode[OMAP3_HS_USB_PORTS]; + unsigned es2_compatibility:1; +}; + +struct usbhs_omap_platform_data { + enum usbhs_omap_port_mode port_mode[OMAP3_HS_USB_PORTS]; + + struct ehci_hcd_omap_platform_data *ehci_data; + struct ohci_hcd_omap_platform_data *ohci_data; +}; + +/*-------------------------------------------------------------------------*/ + +struct omap_musb_board_data { + u8 interface_type; + u8 mode; + u16 power; + unsigned extvbus:1; + void (*set_phy_power)(u8 on); + void (*clear_irq)(void); + void (*set_mode)(u8 mode); + void (*reset)(void); +}; + +enum musb_interface { + MUSB_INTERFACE_ULPI, + MUSB_INTERFACE_UTMI +}; -- cgit v1.2.3 From 969ddcfc95c9a1849114fb72466d2fdea70f1d48 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 19 Oct 2012 11:03:02 -0400 Subject: USB: hub_for_each_child should skip unconnected ports This patch (as1619) improves the interface to the "hub_for_each_child" macro. The name clearly suggests that the macro iterates over child devices; it does not suggest that the loop will also iterate over unnconnected ports. The patch changes the macro so that it will skip over unconnected ports and iterate only the actual child devices. The two existing call sites are updated to avoid testing for a NULL child pointer, which is now unnecessary. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb.h b/include/linux/usb.h index f92cdf0c1457..5df7c87b277f 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -588,8 +588,9 @@ extern struct usb_device *usb_hub_find_child(struct usb_device *hdev, */ #define usb_hub_for_each_child(hdev, port1, child) \ for (port1 = 1, child = usb_hub_find_child(hdev, port1); \ - port1 <= hdev->maxchild; \ - child = usb_hub_find_child(hdev, ++port1)) + port1 <= hdev->maxchild; \ + child = usb_hub_find_child(hdev, ++port1)) \ + if (!child) continue; else /* USB device locking */ #define usb_lock_device(udev) device_lock(&(udev)->dev) -- cgit v1.2.3 From bfd1e910139be73fb0783a0b3171fc79e6afa031 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 19 Oct 2012 11:03:39 -0400 Subject: USB: speed up usb_bus_resume() This patch (as1620) speeds up USB root-hub resumes in the common case where every enabled port has its suspend feature set (which currently will be true for every runtime resume of the root hub). If all the enabled ports are suspended then resuming the root hub won't resume any of the downstream devices. In this case there's no need for a Resume Recovery delay, because that delay is meant to give devices a chance to get ready for active use. To keep track of the port suspend features, the patch adds a "port_is_suspended" flag to struct usb_device. This has to be tracked separately from the device's state; it's entirely possible for a USB-2 device to be suspended while the suspend feature on its parent port is clear. The reason is that devices will go into suspend whenever their parent hub does. Signed-off-by: Alan Stern Reviewed-by: Peter Chen Tested-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb.h b/include/linux/usb.h index 5df7c87b277f..f51f9981de1e 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -482,6 +482,7 @@ struct usb3_lpm_parameters { * @connect_time: time device was first connected * @do_remote_wakeup: remote wakeup should be enabled * @reset_resume: needs reset instead of resume + * @port_is_suspended: the upstream port is suspended (L2 or U3) * @wusb_dev: if this is a Wireless USB device, link to the WUSB * specific data for the device. * @slot_id: Slot ID assigned by xHCI @@ -560,6 +561,7 @@ struct usb_device { unsigned do_remote_wakeup:1; unsigned reset_resume:1; + unsigned port_is_suspended:1; #endif struct wusb_dev *wusb_dev; int slot_id; -- cgit v1.2.3 From 0a0c3b5a24bd802b1ebbf99e0b01296647b8199b Mon Sep 17 00:00:00 2001 From: Damian Hobson-Garcia Date: Tue, 25 Sep 2012 15:09:11 +0900 Subject: Add new uio device for dynamic memory allocation This device extends the uio_pdrv_genirq driver to provide limited dynamic memory allocation for UIO devices. This allows UIO devices to use CMA and IOMMU allocated memory regions. This driver is based on the uio_pdrv_genirq driver and provides the same generic interrupt handling capabilities. Like uio_prdv_genirq, a fixed number of memory regions, defined in the platform device's .resources field are exported to userpace. This driver adds the ability to export additional regions whose number and size are known at boot time, but whose memory is not allocated until the uio device file is opened for the first time. When the device file is closed, the allocated memory block is freed. Physical (DMA) addresses for the dynamic regions are provided to the userspace via /sys/class/uio/uioX/maps/mapY/addr in the same way as static addresses are when the uio device file is open, when no processes are holding the device file open, the address returned to userspace is DMA_ERROR_CODE. Signed-off-by: Damian Hobson-Garcia Signed-off-by: "Hans J. Koch" Signed-off-by: Greg Kroah-Hartman --- include/linux/platform_data/uio_dmem_genirq.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 include/linux/platform_data/uio_dmem_genirq.h (limited to 'include/linux') diff --git a/include/linux/platform_data/uio_dmem_genirq.h b/include/linux/platform_data/uio_dmem_genirq.h new file mode 100644 index 000000000000..973c1bb32168 --- /dev/null +++ b/include/linux/platform_data/uio_dmem_genirq.h @@ -0,0 +1,26 @@ +/* + * include/linux/platform_data/uio_dmem_genirq.h + * + * Copyright (C) 2012 Damian Hobson-Garcia + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _UIO_DMEM_GENIRQ_H +#define _UIO_DMEM_GENIRQ_H + +#include + +struct uio_dmem_genirq_pdata { + struct uio_info uioinfo; + unsigned int *dynamic_region_sizes; + unsigned int num_dynamic_regions; +}; +#endif /* _UIO_DMEM_GENIRQ_H */ -- cgit v1.2.3 From 877bd862f32b815d54ab5fc10a4fd903d7bf3012 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Wed, 24 Oct 2012 19:46:54 +0000 Subject: usbnet: introduce usbnet 3 command helpers This patch introduces the below 3 usb command helpers: usbnet_read_cmd / usbnet_write_cmd / usbnet_write_cmd_async so that each low level driver doesn't need to implement them by itself, and the dma buffer allocation for usb transfer and runtime PM things can be handled just in one place. Acked-by: Oliver Neukum Signed-off-by: Ming Lei Signed-off-by: David S. Miller --- include/linux/usb/usbnet.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h index ddbbb7de894b..4410e4166c6c 100644 --- a/include/linux/usb/usbnet.h +++ b/include/linux/usb/usbnet.h @@ -163,6 +163,12 @@ extern int usbnet_resume(struct usb_interface *); extern void usbnet_disconnect(struct usb_interface *); extern void usbnet_device_suggests_idle(struct usbnet *dev); +extern int usbnet_read_cmd(struct usbnet *dev, u8 cmd, u8 reqtype, + u16 value, u16 index, void *data, u16 size); +extern int usbnet_write_cmd(struct usbnet *dev, u8 cmd, u8 reqtype, + u16 value, u16 index, const void *data, u16 size); +extern int usbnet_write_cmd_async(struct usbnet *dev, u8 cmd, u8 reqtype, + u16 value, u16 index, const void *data, u16 size); /* Drivers that reuse some of the standard USB CDC infrastructure * (notably, using multiple interfaces according to the CDC -- cgit v1.2.3 From 91872392f08486f692887d2f06a333f512648f22 Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Tue, 9 Oct 2012 19:52:05 +0200 Subject: drivers/base: Add a DEVICE_BOOL_ATTR macro ... which, analogous to DEVICE_INT_ATTR provides functionality to set/clear bools. Its purpose is to be used where values need to be used as booleans in configuration context. Next patch uses this. Signed-off-by: Borislav Petkov Acked-by: Greg Kroah-Hartman Acked-by: Tony Luck --- include/linux/device.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index 86ef6ab553b1..50c85a26b003 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -496,6 +496,10 @@ ssize_t device_show_int(struct device *dev, struct device_attribute *attr, char *buf); ssize_t device_store_int(struct device *dev, struct device_attribute *attr, const char *buf, size_t count); +ssize_t device_show_bool(struct device *dev, struct device_attribute *attr, + char *buf); +ssize_t device_store_bool(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count); #define DEVICE_ATTR(_name, _mode, _show, _store) \ struct device_attribute dev_attr_##_name = __ATTR(_name, _mode, _show, _store) @@ -505,6 +509,9 @@ ssize_t device_store_int(struct device *dev, struct device_attribute *attr, #define DEVICE_INT_ATTR(_name, _mode, _var) \ struct dev_ext_attribute dev_attr_##_name = \ { __ATTR(_name, _mode, device_show_int, device_store_int), &(_var) } +#define DEVICE_BOOL_ATTR(_name, _mode, _var) \ + struct dev_ext_attribute dev_attr_##_name = \ + { __ATTR(_name, _mode, device_show_bool, device_store_bool), &(_var) } #define DEVICE_ATTR_IGNORE_LOCKDEP(_name, _mode, _show, _store) \ struct device_attribute dev_attr_##_name = \ __ATTR_IGNORE_LOCKDEP(_name, _mode, _show, _store) -- cgit v1.2.3 From 5d8f72b55c275677865de670fa147ed318191d81 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Fri, 26 Oct 2012 19:46:06 +0200 Subject: freezer: change ptrace_stop/do_signal_stop to use freezable_schedule() try_to_freeze_tasks() and cgroup_freezer rely on scheduler locks to ensure that a task doing STOPPED/TRACED -> RUNNING transition can't escape freezing. This mostly works, but ptrace_stop() does not necessarily call schedule(), it can change task->state back to RUNNING and check freezing() without any lock/barrier in between. We could add the necessary barrier, but this patch changes ptrace_stop() and do_signal_stop() to use freezable_schedule(). This fixes the race, freezer_count() and freezer_should_skip() carefully avoid the race. And this simplifies the code, try_to_freeze_tasks/update_if_frozen no longer need to use task_is_stopped_or_traced() checks with the non trivial assumptions. We can rely on the mechanism which was specially designed to mark the sleeping task as "frozen enough". v2: As Tejun pointed out, we can also change get_signal_to_deliver() and move try_to_freeze() up before 'relock' label. Signed-off-by: Oleg Nesterov Signed-off-by: Tejun Heo --- include/linux/freezer.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/freezer.h b/include/linux/freezer.h index ee899329e65a..8039893bc3ec 100644 --- a/include/linux/freezer.h +++ b/include/linux/freezer.h @@ -134,10 +134,9 @@ static inline bool freezer_should_skip(struct task_struct *p) } /* - * These macros are intended to be used whenever you want allow a task that's - * sleeping in TASK_UNINTERRUPTIBLE or TASK_KILLABLE state to be frozen. Note - * that neither return any clear indication of whether a freeze event happened - * while in this function. + * These macros are intended to be used whenever you want allow a sleeping + * task to be frozen. Note that neither return any clear indication of + * whether a freeze event happened while in this function. */ /* Like schedule(), but should not block the freezer. */ -- cgit v1.2.3 From 2eb2478d471e45e1d0c8bb3defbf82bf7204e13d Mon Sep 17 00:00:00 2001 From: Matt Porter Date: Fri, 5 Oct 2012 13:04:40 -0400 Subject: uio: uio_pruss: replace private SRAM API with genalloc Remove the use of the private DaVinci SRAM API in favor of genalloc. The pool to be used is provided by platform data. Signed-off-by: Matt Porter Signed-off-by: "Hans J. Koch" Signed-off-by: Sekhar Nori --- include/linux/platform_data/uio_pruss.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/uio_pruss.h b/include/linux/platform_data/uio_pruss.h index f39140aabc6f..3d47d219827f 100644 --- a/include/linux/platform_data/uio_pruss.h +++ b/include/linux/platform_data/uio_pruss.h @@ -20,6 +20,7 @@ /* To configure the PRUSS INTC base offset for UIO driver */ struct uio_pruss_pdata { - u32 pintc_base; + u32 pintc_base; + struct gen_pool *sram_pool; }; #endif /* _UIO_PRUSS_H_ */ -- cgit v1.2.3 From 55c6659afaa6fd79a3b5a7c2b42bb87e0c11209d Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Sat, 13 Oct 2012 01:14:16 +0800 Subject: srcu: Add DEFINE_SRCU() In old days, we had two different API sets for dynamic-allocated per-CPU data and DEFINE_PER_CPU()-defined per_cpu data, and because SRCU used dynamic-allocated per-CPU data, its srcu_struct structures cannot be declared statically. This commit therefore introduces DEFINE_SRCU() and DEFINE_STATIC_SRCU() to allow statically declared SRCU structures, using the new static per-CPU interfaces. Signed-off-by: Lai Jiangshan Signed-off-by: Paul E. McKenney [ paulmck: Updated for __DELAYED_WORK_INITIALIZER() added argument, fixed whitespace issue. ] --- include/linux/srcu.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'include/linux') diff --git a/include/linux/srcu.h b/include/linux/srcu.h index 5cce128f196c..6eb691b08358 100644 --- a/include/linux/srcu.h +++ b/include/linux/srcu.h @@ -42,6 +42,8 @@ struct rcu_batch { struct rcu_head *head, **tail; }; +#define RCU_BATCH_INIT(name) { NULL, &(name.head) } + struct srcu_struct { unsigned completed; struct srcu_struct_array __percpu *per_cpu_ref; @@ -72,14 +74,42 @@ int __init_srcu_struct(struct srcu_struct *sp, const char *name, __init_srcu_struct((sp), #sp, &__srcu_key); \ }) +#define __SRCU_DEP_MAP_INIT(srcu_name) .dep_map = { .name = #srcu_name }, #else /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */ int init_srcu_struct(struct srcu_struct *sp); +#define __SRCU_DEP_MAP_INIT(srcu_name) #endif /* #else #ifdef CONFIG_DEBUG_LOCK_ALLOC */ void process_srcu(struct work_struct *work); +#define __SRCU_STRUCT_INIT(name) \ + { \ + .completed = -300, \ + .per_cpu_ref = &name##_srcu_array, \ + .queue_lock = __SPIN_LOCK_UNLOCKED(name.queue_lock), \ + .running = false, \ + .batch_queue = RCU_BATCH_INIT(name.batch_queue), \ + .batch_check0 = RCU_BATCH_INIT(name.batch_check0), \ + .batch_check1 = RCU_BATCH_INIT(name.batch_check1), \ + .batch_done = RCU_BATCH_INIT(name.batch_done), \ + .work = __DELAYED_WORK_INITIALIZER(name.work, process_srcu, 0),\ + __SRCU_DEP_MAP_INIT(name) \ + } + +/* + * define and init a srcu struct at build time. + * dont't call init_srcu_struct() nor cleanup_srcu_struct() on it. + */ +#define DEFINE_SRCU(name) \ + static DEFINE_PER_CPU(struct srcu_struct_array, name##_srcu_array);\ + struct srcu_struct name = __SRCU_STRUCT_INIT(name); + +#define DEFINE_STATIC_SRCU(name) \ + static DEFINE_PER_CPU(struct srcu_struct_array, name##_srcu_array);\ + static struct srcu_struct name = __SRCU_STRUCT_INIT(name); + /** * call_srcu() - Queue a callback for invocation after an SRCU grace period * @sp: srcu_struct in queue the callback -- cgit v1.2.3 From bb16bd9b9da49dec4f3856bc520c375e49a1237d Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 10 Oct 2012 14:27:58 +0200 Subject: pinctrl/nomadik: move the platform data header This moves the platform data header for the Nomadik pin controller to . Signed-off-by: Linus Walleij --- include/linux/platform_data/pinctrl-nomadik.h | 108 ++++++++++++++++++++++++++ 1 file changed, 108 insertions(+) create mode 100644 include/linux/platform_data/pinctrl-nomadik.h (limited to 'include/linux') diff --git a/include/linux/platform_data/pinctrl-nomadik.h b/include/linux/platform_data/pinctrl-nomadik.h new file mode 100644 index 000000000000..a74999438de4 --- /dev/null +++ b/include/linux/platform_data/pinctrl-nomadik.h @@ -0,0 +1,108 @@ +/* + * Structures and registers for GPIO access in the Nomadik SoC + * + * Copyright (C) 2008 STMicroelectronics + * Author: Prafulla WADASKAR + * Copyright (C) 2009 Alessandro Rubini + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __PLAT_NOMADIK_GPIO +#define __PLAT_NOMADIK_GPIO + +/* + * "nmk_gpio" and "NMK_GPIO" stand for "Nomadik GPIO", leaving + * the "gpio" namespace for generic and cross-machine functions + */ + +#define GPIO_BLOCK_SHIFT 5 +#define NMK_GPIO_PER_CHIP (1 << GPIO_BLOCK_SHIFT) + +/* Register in the logic block */ +#define NMK_GPIO_DAT 0x00 +#define NMK_GPIO_DATS 0x04 +#define NMK_GPIO_DATC 0x08 +#define NMK_GPIO_PDIS 0x0c +#define NMK_GPIO_DIR 0x10 +#define NMK_GPIO_DIRS 0x14 +#define NMK_GPIO_DIRC 0x18 +#define NMK_GPIO_SLPC 0x1c +#define NMK_GPIO_AFSLA 0x20 +#define NMK_GPIO_AFSLB 0x24 +#define NMK_GPIO_LOWEMI 0x28 + +#define NMK_GPIO_RIMSC 0x40 +#define NMK_GPIO_FIMSC 0x44 +#define NMK_GPIO_IS 0x48 +#define NMK_GPIO_IC 0x4c +#define NMK_GPIO_RWIMSC 0x50 +#define NMK_GPIO_FWIMSC 0x54 +#define NMK_GPIO_WKS 0x58 +/* These appear in DB8540 and later ASICs */ +#define NMK_GPIO_EDGELEVEL 0x5C +#define NMK_GPIO_LEVEL 0x60 + +/* Alternate functions: function C is set in hw by setting both A and B */ +#define NMK_GPIO_ALT_GPIO 0 +#define NMK_GPIO_ALT_A 1 +#define NMK_GPIO_ALT_B 2 +#define NMK_GPIO_ALT_C (NMK_GPIO_ALT_A | NMK_GPIO_ALT_B) + +#define NMK_GPIO_ALT_CX_SHIFT 2 +#define NMK_GPIO_ALT_C1 ((1< Date: Wed, 10 Oct 2012 14:35:17 +0200 Subject: pinctrl/nomadik: merge old pincfg header This merges the old header into and rids us of yet one more include. Signed-off-by: Linus Walleij --- include/linux/platform_data/pinctrl-nomadik.h | 158 ++++++++++++++++++++++++++ 1 file changed, 158 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/pinctrl-nomadik.h b/include/linux/platform_data/pinctrl-nomadik.h index a74999438de4..f73b2f0c55b7 100644 --- a/include/linux/platform_data/pinctrl-nomadik.h +++ b/include/linux/platform_data/pinctrl-nomadik.h @@ -13,6 +13,160 @@ #ifndef __PLAT_NOMADIK_GPIO #define __PLAT_NOMADIK_GPIO +/* + * pin configurations are represented by 32-bit integers: + * + * bit 0.. 8 - Pin Number (512 Pins Maximum) + * bit 9..10 - Alternate Function Selection + * bit 11..12 - Pull up/down state + * bit 13 - Sleep mode behaviour + * bit 14 - Direction + * bit 15 - Value (if output) + * bit 16..18 - SLPM pull up/down state + * bit 19..20 - SLPM direction + * bit 21..22 - SLPM Value (if output) + * bit 23..25 - PDIS value (if input) + * bit 26 - Gpio mode + * bit 27 - Sleep mode + * + * to facilitate the definition, the following macros are provided + * + * PIN_CFG_DEFAULT - default config (0): + * pull up/down = disabled + * sleep mode = input/wakeup + * direction = input + * value = low + * SLPM direction = same as normal + * SLPM pull = same as normal + * SLPM value = same as normal + * + * PIN_CFG - default config with alternate function + */ + +typedef unsigned long pin_cfg_t; + +#define PIN_NUM_MASK 0x1ff +#define PIN_NUM(x) ((x) & PIN_NUM_MASK) + +#define PIN_ALT_SHIFT 9 +#define PIN_ALT_MASK (0x3 << PIN_ALT_SHIFT) +#define PIN_ALT(x) (((x) & PIN_ALT_MASK) >> PIN_ALT_SHIFT) +#define PIN_GPIO (NMK_GPIO_ALT_GPIO << PIN_ALT_SHIFT) +#define PIN_ALT_A (NMK_GPIO_ALT_A << PIN_ALT_SHIFT) +#define PIN_ALT_B (NMK_GPIO_ALT_B << PIN_ALT_SHIFT) +#define PIN_ALT_C (NMK_GPIO_ALT_C << PIN_ALT_SHIFT) + +#define PIN_PULL_SHIFT 11 +#define PIN_PULL_MASK (0x3 << PIN_PULL_SHIFT) +#define PIN_PULL(x) (((x) & PIN_PULL_MASK) >> PIN_PULL_SHIFT) +#define PIN_PULL_NONE (NMK_GPIO_PULL_NONE << PIN_PULL_SHIFT) +#define PIN_PULL_UP (NMK_GPIO_PULL_UP << PIN_PULL_SHIFT) +#define PIN_PULL_DOWN (NMK_GPIO_PULL_DOWN << PIN_PULL_SHIFT) + +#define PIN_SLPM_SHIFT 13 +#define PIN_SLPM_MASK (0x1 << PIN_SLPM_SHIFT) +#define PIN_SLPM(x) (((x) & PIN_SLPM_MASK) >> PIN_SLPM_SHIFT) +#define PIN_SLPM_MAKE_INPUT (NMK_GPIO_SLPM_INPUT << PIN_SLPM_SHIFT) +#define PIN_SLPM_NOCHANGE (NMK_GPIO_SLPM_NOCHANGE << PIN_SLPM_SHIFT) +/* These two replace the above in DB8500v2+ */ +#define PIN_SLPM_WAKEUP_ENABLE (NMK_GPIO_SLPM_WAKEUP_ENABLE << PIN_SLPM_SHIFT) +#define PIN_SLPM_WAKEUP_DISABLE (NMK_GPIO_SLPM_WAKEUP_DISABLE << PIN_SLPM_SHIFT) +#define PIN_SLPM_USE_MUX_SETTINGS_IN_SLEEP PIN_SLPM_WAKEUP_DISABLE + +#define PIN_SLPM_GPIO PIN_SLPM_WAKEUP_ENABLE /* In SLPM, pin is a gpio */ +#define PIN_SLPM_ALTFUNC PIN_SLPM_WAKEUP_DISABLE /* In SLPM, pin is altfunc */ + +#define PIN_DIR_SHIFT 14 +#define PIN_DIR_MASK (0x1 << PIN_DIR_SHIFT) +#define PIN_DIR(x) (((x) & PIN_DIR_MASK) >> PIN_DIR_SHIFT) +#define PIN_DIR_INPUT (0 << PIN_DIR_SHIFT) +#define PIN_DIR_OUTPUT (1 << PIN_DIR_SHIFT) + +#define PIN_VAL_SHIFT 15 +#define PIN_VAL_MASK (0x1 << PIN_VAL_SHIFT) +#define PIN_VAL(x) (((x) & PIN_VAL_MASK) >> PIN_VAL_SHIFT) +#define PIN_VAL_LOW (0 << PIN_VAL_SHIFT) +#define PIN_VAL_HIGH (1 << PIN_VAL_SHIFT) + +#define PIN_SLPM_PULL_SHIFT 16 +#define PIN_SLPM_PULL_MASK (0x7 << PIN_SLPM_PULL_SHIFT) +#define PIN_SLPM_PULL(x) \ + (((x) & PIN_SLPM_PULL_MASK) >> PIN_SLPM_PULL_SHIFT) +#define PIN_SLPM_PULL_NONE \ + ((1 + NMK_GPIO_PULL_NONE) << PIN_SLPM_PULL_SHIFT) +#define PIN_SLPM_PULL_UP \ + ((1 + NMK_GPIO_PULL_UP) << PIN_SLPM_PULL_SHIFT) +#define PIN_SLPM_PULL_DOWN \ + ((1 + NMK_GPIO_PULL_DOWN) << PIN_SLPM_PULL_SHIFT) + +#define PIN_SLPM_DIR_SHIFT 19 +#define PIN_SLPM_DIR_MASK (0x3 << PIN_SLPM_DIR_SHIFT) +#define PIN_SLPM_DIR(x) \ + (((x) & PIN_SLPM_DIR_MASK) >> PIN_SLPM_DIR_SHIFT) +#define PIN_SLPM_DIR_INPUT ((1 + 0) << PIN_SLPM_DIR_SHIFT) +#define PIN_SLPM_DIR_OUTPUT ((1 + 1) << PIN_SLPM_DIR_SHIFT) + +#define PIN_SLPM_VAL_SHIFT 21 +#define PIN_SLPM_VAL_MASK (0x3 << PIN_SLPM_VAL_SHIFT) +#define PIN_SLPM_VAL(x) \ + (((x) & PIN_SLPM_VAL_MASK) >> PIN_SLPM_VAL_SHIFT) +#define PIN_SLPM_VAL_LOW ((1 + 0) << PIN_SLPM_VAL_SHIFT) +#define PIN_SLPM_VAL_HIGH ((1 + 1) << PIN_SLPM_VAL_SHIFT) + +#define PIN_SLPM_PDIS_SHIFT 23 +#define PIN_SLPM_PDIS_MASK (0x3 << PIN_SLPM_PDIS_SHIFT) +#define PIN_SLPM_PDIS(x) \ + (((x) & PIN_SLPM_PDIS_MASK) >> PIN_SLPM_PDIS_SHIFT) +#define PIN_SLPM_PDIS_NO_CHANGE (0 << PIN_SLPM_PDIS_SHIFT) +#define PIN_SLPM_PDIS_DISABLED (1 << PIN_SLPM_PDIS_SHIFT) +#define PIN_SLPM_PDIS_ENABLED (2 << PIN_SLPM_PDIS_SHIFT) + +#define PIN_LOWEMI_SHIFT 25 +#define PIN_LOWEMI_MASK (0x1 << PIN_LOWEMI_SHIFT) +#define PIN_LOWEMI(x) (((x) & PIN_LOWEMI_MASK) >> PIN_LOWEMI_SHIFT) +#define PIN_LOWEMI_DISABLED (0 << PIN_LOWEMI_SHIFT) +#define PIN_LOWEMI_ENABLED (1 << PIN_LOWEMI_SHIFT) + +#define PIN_GPIOMODE_SHIFT 26 +#define PIN_GPIOMODE_MASK (0x1 << PIN_GPIOMODE_SHIFT) +#define PIN_GPIOMODE(x) (((x) & PIN_GPIOMODE_MASK) >> PIN_GPIOMODE_SHIFT) +#define PIN_GPIOMODE_DISABLED (0 << PIN_GPIOMODE_SHIFT) +#define PIN_GPIOMODE_ENABLED (1 << PIN_GPIOMODE_SHIFT) + +#define PIN_SLEEPMODE_SHIFT 27 +#define PIN_SLEEPMODE_MASK (0x1 << PIN_SLEEPMODE_SHIFT) +#define PIN_SLEEPMODE(x) (((x) & PIN_SLEEPMODE_MASK) >> PIN_SLEEPMODE_SHIFT) +#define PIN_SLEEPMODE_DISABLED (0 << PIN_SLEEPMODE_SHIFT) +#define PIN_SLEEPMODE_ENABLED (1 << PIN_SLEEPMODE_SHIFT) + + +/* Shortcuts. Use these instead of separate DIR, PULL, and VAL. */ +#define PIN_INPUT_PULLDOWN (PIN_DIR_INPUT | PIN_PULL_DOWN) +#define PIN_INPUT_PULLUP (PIN_DIR_INPUT | PIN_PULL_UP) +#define PIN_INPUT_NOPULL (PIN_DIR_INPUT | PIN_PULL_NONE) +#define PIN_OUTPUT_LOW (PIN_DIR_OUTPUT | PIN_VAL_LOW) +#define PIN_OUTPUT_HIGH (PIN_DIR_OUTPUT | PIN_VAL_HIGH) + +#define PIN_SLPM_INPUT_PULLDOWN (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_DOWN) +#define PIN_SLPM_INPUT_PULLUP (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_UP) +#define PIN_SLPM_INPUT_NOPULL (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_NONE) +#define PIN_SLPM_OUTPUT_LOW (PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_LOW) +#define PIN_SLPM_OUTPUT_HIGH (PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_HIGH) + +#define PIN_CFG_DEFAULT (0) + +#define PIN_CFG(num, alt) \ + (PIN_CFG_DEFAULT |\ + (PIN_NUM(num) | PIN_##alt)) + +#define PIN_CFG_INPUT(num, alt, pull) \ + (PIN_CFG_DEFAULT |\ + (PIN_NUM(num) | PIN_##alt | PIN_INPUT_##pull)) + +#define PIN_CFG_OUTPUT(num, alt, val) \ + (PIN_CFG_DEFAULT |\ + (PIN_NUM(num) | PIN_##alt | PIN_OUTPUT_##val)) + /* * "nmk_gpio" and "NMK_GPIO" stand for "Nomadik GPIO", leaving * the "gpio" namespace for generic and cross-machine functions @@ -72,6 +226,10 @@ enum nmk_gpio_slpm { NMK_GPIO_SLPM_WAKEUP_DISABLE = NMK_GPIO_SLPM_NOCHANGE, }; +/* Older deprecated pin config API that should go away soon */ +extern int nmk_config_pin(pin_cfg_t cfg, bool sleep); +extern int nmk_config_pins(pin_cfg_t *cfgs, int num); +extern int nmk_config_pins_sleep(pin_cfg_t *cfgs, int num); extern int nmk_gpio_set_slpm(int gpio, enum nmk_gpio_slpm mode); extern int nmk_gpio_set_pull(int gpio, enum nmk_gpio_pull pull); #ifdef CONFIG_PINCTRL_NOMADIK -- cgit v1.2.3 From 119c71276b43e3daf5e7b0661dcf63f224e2fc8d Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Wed, 3 Oct 2012 23:38:53 -0700 Subject: clk: Document .is_enabled op Add the missing kernel-doc for this op. Signed-off-by: Stephen Boyd Signed-off-by: Mike Turquette --- include/linux/clk-provider.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index c12731582920..2aa808bdc257 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -53,6 +53,10 @@ struct clk_hw; * @disable: Disable the clock atomically. Called with enable_lock held. * This function must not sleep. * + * @is_enabled: Queries the hardware to determine if the clock is enabled. + * This function must not sleep. Optional, if this op is not + * set then the enable count will be used. + * * @recalc_rate Recalculate the rate of this clock, by quering hardware. The * parent rate is an input parameter. It is up to the caller to * insure that the prepare_mutex is held across this call. -- cgit v1.2.3 From 7ce3e8ccbac708229ba8c40c9c2a43ca7fcdb3ae Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Wed, 3 Oct 2012 23:38:54 -0700 Subject: clk: Fix documentation typos Fix some minor typos in the documentation for the ops structure. Signed-off-by: Stephen Boyd Signed-off-by: Mike Turquette --- include/linux/clk-provider.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 2aa808bdc257..e1d83b187df2 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -57,9 +57,9 @@ struct clk_hw; * This function must not sleep. Optional, if this op is not * set then the enable count will be used. * - * @recalc_rate Recalculate the rate of this clock, by quering hardware. The + * @recalc_rate Recalculate the rate of this clock, by querying hardware. The * parent rate is an input parameter. It is up to the caller to - * insure that the prepare_mutex is held across this call. + * ensure that the prepare_mutex is held across this call. * Returns the calculated rate. Optional, but recommended - if * this op is not set then clock rate will be initialized to 0. * @@ -93,7 +93,7 @@ struct clk_hw; * implementations to split any work between atomic (enable) and sleepable * (prepare) contexts. If enabling a clock requires code that might sleep, * this must be done in clk_prepare. Clock enable code that will never be - * called in a sleepable context may be implement in clk_enable. + * called in a sleepable context may be implemented in clk_enable. * * Typically, drivers will call clk_prepare when a clock may be needed later * (eg. when a device is opened), and clk_enable when the clock is actually -- cgit v1.2.3 From 2ac6b1f50a397580b8dc28f2833e54af7926fc71 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Wed, 3 Oct 2012 23:38:55 -0700 Subject: clk: Don't return negative numbers for unsigned values with !clk Some of the helper functions return negative error codes if passed a NULL clock. This can lead to confusing behavior when the expected return value is unsigned. Fix up these accessors so that they return unsigned values (or bool in the case of is_enabled). This way we can't interpret NULL clocks as having valid and interesting values. Signed-off-by: Stephen Boyd Signed-off-by: Mike Turquette --- include/linux/clk-provider.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index e1d83b187df2..0dce3d31eae5 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -339,11 +339,11 @@ const char *__clk_get_name(struct clk *clk); struct clk_hw *__clk_get_hw(struct clk *clk); u8 __clk_get_num_parents(struct clk *clk); struct clk *__clk_get_parent(struct clk *clk); -inline int __clk_get_enable_count(struct clk *clk); -inline int __clk_get_prepare_count(struct clk *clk); +inline unsigned int __clk_get_enable_count(struct clk *clk); +inline unsigned int __clk_get_prepare_count(struct clk *clk); unsigned long __clk_get_rate(struct clk *clk); unsigned long __clk_get_flags(struct clk *clk); -int __clk_is_enabled(struct clk *clk); +bool __clk_is_enabled(struct clk *clk); struct clk *__clk_lookup(const char *name); /* -- cgit v1.2.3 From 686f871b7109e7e253a7a1cef542c00d0ed1a323 Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Mon, 24 Sep 2012 16:43:17 +0200 Subject: mfd: dbx500: Export prmcu_request_ape_opp_100_voltage This function needs to be exported to let clients be able to request the ape opp 100 voltage. Cc: Samuel Ortiz Signed-off-by: Ulf Hansson Acked-by: Linus Walleij Signed-off-by: Mike Turquette --- include/linux/mfd/db8500-prcmu.h | 4 ++-- include/linux/mfd/dbx500-prcmu.h | 10 ++++++++++ 2 files changed, 12 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/db8500-prcmu.h b/include/linux/mfd/db8500-prcmu.h index b82f6ee66a0b..6ee4247df11e 100644 --- a/include/linux/mfd/db8500-prcmu.h +++ b/include/linux/mfd/db8500-prcmu.h @@ -515,7 +515,6 @@ enum romcode_read prcmu_get_rc_p2a(void); enum ap_pwrst prcmu_get_xp70_current_state(void); bool prcmu_has_arm_maxopp(void); struct prcmu_fw_version *prcmu_get_fw_version(void); -int prcmu_request_ape_opp_100_voltage(bool enable); int prcmu_release_usb_wakeup_state(void); void prcmu_configure_auto_pm(struct prcmu_auto_pm_config *sleep, struct prcmu_auto_pm_config *idle); @@ -564,6 +563,7 @@ int db8500_prcmu_set_arm_opp(u8 opp); int db8500_prcmu_get_arm_opp(void); int db8500_prcmu_set_ape_opp(u8 opp); int db8500_prcmu_get_ape_opp(void); +int db8500_prcmu_request_ape_opp_100_voltage(bool enable); int db8500_prcmu_set_ddr_opp(u8 opp); int db8500_prcmu_get_ddr_opp(void); @@ -610,7 +610,7 @@ static inline int db8500_prcmu_get_ape_opp(void) return APE_100_OPP; } -static inline int prcmu_request_ape_opp_100_voltage(bool enable) +static inline int db8500_prcmu_request_ape_opp_100_voltage(bool enable) { return 0; } diff --git a/include/linux/mfd/dbx500-prcmu.h b/include/linux/mfd/dbx500-prcmu.h index c410d99bd667..c202d6c4d879 100644 --- a/include/linux/mfd/dbx500-prcmu.h +++ b/include/linux/mfd/dbx500-prcmu.h @@ -336,6 +336,11 @@ static inline int prcmu_get_ape_opp(void) return db8500_prcmu_get_ape_opp(); } +static inline int prcmu_request_ape_opp_100_voltage(bool enable) +{ + return db8500_prcmu_request_ape_opp_100_voltage(enable); +} + static inline void prcmu_system_reset(u16 reset_code) { return db8500_prcmu_system_reset(reset_code); @@ -507,6 +512,11 @@ static inline int prcmu_get_ape_opp(void) return APE_100_OPP; } +static inline int prcmu_request_ape_opp_100_voltage(bool enable) +{ + return 0; +} + static inline int prcmu_set_arm_opp(u8 opp) { return 0; -- cgit v1.2.3 From 46c8773a58010d31f228e148b8b774d94cc9810d Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Mon, 24 Sep 2012 13:38:04 -0700 Subject: clk: Add devm_clk_{register,unregister}() Some clock drivers can be simplified if devres takes care of unregistering any registered clocks along error paths. Introduce devm_clk_register() so that clock drivers get unregistration for free along with simplified error paths. Signed-off-by: Stephen Boyd Signed-off-by: Mike Turquette --- include/linux/clk-provider.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 0dce3d31eae5..3593a3ce3f0d 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -331,8 +331,10 @@ struct clk *clk_register_fixed_factor(struct device *dev, const char *name, * error code; drivers must test for an error code after calling clk_register. */ struct clk *clk_register(struct device *dev, struct clk_hw *hw); +struct clk *devm_clk_register(struct device *dev, struct clk_hw *hw); void clk_unregister(struct clk *clk); +void devm_clk_unregister(struct device *dev, struct clk *clk); /* helper functions */ const char *__clk_get_name(struct clk *clk); -- cgit v1.2.3 From dcbf832e5823156e8f155359b47bd108cac8ad68 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Fri, 5 Oct 2012 23:07:19 +0200 Subject: vtime: Gather vtime declarations to their own header file These APIs are scattered around and are going to expand a bit. Let's create a dedicated header file for sanity. Signed-off-by: Frederic Weisbecker Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Thomas Gleixner Cc: Steven Rostedt Cc: Paul Gortmaker --- include/linux/hardirq.h | 11 +---------- include/linux/kernel_stat.h | 9 +-------- include/linux/vtime.h | 22 ++++++++++++++++++++++ 3 files changed, 24 insertions(+), 18 deletions(-) create mode 100644 include/linux/vtime.h (limited to 'include/linux') diff --git a/include/linux/hardirq.h b/include/linux/hardirq.h index cab3da3d0949..b083a475423d 100644 --- a/include/linux/hardirq.h +++ b/include/linux/hardirq.h @@ -4,6 +4,7 @@ #include #include #include +#include #include /* @@ -129,16 +130,6 @@ extern void synchronize_irq(unsigned int irq); # define synchronize_irq(irq) barrier() #endif -struct task_struct; - -#if !defined(CONFIG_VIRT_CPU_ACCOUNTING) && !defined(CONFIG_IRQ_TIME_ACCOUNTING) -static inline void vtime_account(struct task_struct *tsk) -{ -} -#else -extern void vtime_account(struct task_struct *tsk); -#endif - #if defined(CONFIG_TINY_RCU) || defined(CONFIG_TINY_PREEMPT_RCU) static inline void rcu_nmi_enter(void) diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h index 36d12f0884c3..1865b1f29770 100644 --- a/include/linux/kernel_stat.h +++ b/include/linux/kernel_stat.h @@ -7,6 +7,7 @@ #include #include #include +#include #include #include @@ -130,12 +131,4 @@ extern void account_process_tick(struct task_struct *, int user); extern void account_steal_ticks(unsigned long ticks); extern void account_idle_ticks(unsigned long ticks); -#ifdef CONFIG_VIRT_CPU_ACCOUNTING -extern void vtime_task_switch(struct task_struct *prev); -extern void vtime_account_system(struct task_struct *tsk); -extern void vtime_account_idle(struct task_struct *tsk); -#else -static inline void vtime_task_switch(struct task_struct *prev) { } -#endif - #endif /* _LINUX_KERNEL_STAT_H */ diff --git a/include/linux/vtime.h b/include/linux/vtime.h new file mode 100644 index 000000000000..7199c24c8204 --- /dev/null +++ b/include/linux/vtime.h @@ -0,0 +1,22 @@ +#ifndef _LINUX_KERNEL_VTIME_H +#define _LINUX_KERNEL_VTIME_H + +struct task_struct; + +#ifdef CONFIG_VIRT_CPU_ACCOUNTING +extern void vtime_task_switch(struct task_struct *prev); +extern void vtime_account_system(struct task_struct *tsk); +extern void vtime_account_idle(struct task_struct *tsk); +#else +static inline void vtime_task_switch(struct task_struct *prev) { } +#endif + +#if !defined(CONFIG_VIRT_CPU_ACCOUNTING) && !defined(CONFIG_IRQ_TIME_ACCOUNTING) +static inline void vtime_account(struct task_struct *tsk) +{ +} +#else +extern void vtime_account(struct task_struct *tsk); +#endif + +#endif /* _LINUX_KERNEL_VTIME_H */ -- cgit v1.2.3 From 11113334d1c5dd5355c86e531c29f1202a855c86 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Wed, 24 Oct 2012 18:05:51 +0200 Subject: vtime: Make vtime_account_system() irqsafe vtime_account_system() currently has only one caller with vtime_account() which is irq safe. Now we are going to call it from other places like kvm where irqs are not always disabled by the time we account the cputime. So let's make it irqsafe. The arch implementation part is now prefixed with "__". vtime_account_idle() arch implementation is prefixed accordingly to stay consistent. Signed-off-by: Frederic Weisbecker Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Thomas Gleixner Cc: Steven Rostedt Cc: Paul Gortmaker Cc: Tony Luck Cc: Fenghua Yu Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Martin Schwidefsky Cc: Heiko Carstens --- include/linux/vtime.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/vtime.h b/include/linux/vtime.h index 7199c24c8204..b9fc4f9ab470 100644 --- a/include/linux/vtime.h +++ b/include/linux/vtime.h @@ -5,10 +5,12 @@ struct task_struct; #ifdef CONFIG_VIRT_CPU_ACCOUNTING extern void vtime_task_switch(struct task_struct *prev); +extern void __vtime_account_system(struct task_struct *tsk); extern void vtime_account_system(struct task_struct *tsk); -extern void vtime_account_idle(struct task_struct *tsk); +extern void __vtime_account_idle(struct task_struct *tsk); #else static inline void vtime_task_switch(struct task_struct *prev) { } +static inline void vtime_account_system(struct task_struct *tsk) { } #endif #if !defined(CONFIG_VIRT_CPU_ACCOUNTING) && !defined(CONFIG_IRQ_TIME_ACCOUNTING) -- cgit v1.2.3 From b080935c8638e08134629d0a9ebdf35669bec14d Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Fri, 5 Oct 2012 23:07:19 +0200 Subject: kvm: Directly account vtime to system on guest switch Switching to or from guest context is done on ioctl context. So by the time we call kvm_guest_enter() or kvm_guest_exit() we know we are not running the idle task. As a result, we can directly account the cputime using vtime_account_system(). There are two good reasons to do this: * We avoid some useless checks on guest switch. It optimizes a bit this fast path. * In the case of CONFIG_IRQ_TIME_ACCOUNTING, calling vtime_account() checks for irq time to account. This is pointless since we know we are not in an irq on guest switch. This is wasting cpu cycles for no good reason. vtime_account_system() OTOH is a no-op in this config option. * We can remove the irq disable/enable around kvm guest switch in s390. A further optimization may consist in introducing a vtime_account_guest() that directly calls account_guest_time(). Signed-off-by: Frederic Weisbecker Cc: Tony Luck Cc: Fenghua Yu Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Heiko Carstens Cc: Martin Schwidefsky Cc: Avi Kivity Cc: Marcelo Tosatti Cc: Joerg Roedel Cc: Alexander Graf Cc: Xiantao Zhang Cc: Christian Borntraeger Cc: Cornelia Huck Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Thomas Gleixner Cc: Steven Rostedt Cc: Paul Gortmaker --- include/linux/kvm_host.h | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 93bfc9f9815c..0e2212fe4784 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -737,7 +737,11 @@ static inline int kvm_deassign_device(struct kvm *kvm, static inline void kvm_guest_enter(void) { BUG_ON(preemptible()); - vtime_account(current); + /* + * This is running in ioctl context so we can avoid + * the call to vtime_account() with its unnecessary idle check. + */ + vtime_account_system(current); current->flags |= PF_VCPU; /* KVM does not hold any references to rcu protected data when it * switches CPU into a guest mode. In fact switching to a guest mode @@ -751,7 +755,11 @@ static inline void kvm_guest_enter(void) static inline void kvm_guest_exit(void) { - vtime_account(current); + /* + * This is running in ioctl context so we can avoid + * the call to vtime_account() with its unnecessary idle check. + */ + vtime_account_system(current); current->flags &= ~PF_VCPU; } -- cgit v1.2.3 From fa5058f3b63153e0147ef65bcdb3a4ee63581346 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Sat, 6 Oct 2012 04:07:19 +0200 Subject: cputime: Specialize irq vtime hooks With CONFIG_VIRT_CPU_ACCOUNTING, when vtime_account() is called in irq entry/exit, we perform a check on the context: if we are interrupting the idle task we account the pending cputime to idle, otherwise account to system time or its sub-areas: tsk->stime, hardirq time, softirq time, ... However this check for idle only concerns the hardirq entry and softirq entry: * Hardirq may directly interrupt the idle task, in which case we need to flush the pending CPU time to idle. * The idle task may be directly interrupted by a softirq if it calls local_bh_enable(). There is probably no such call in any idle task but we need to cover every case. Ksoftirqd is not concerned because the idle time is flushed on context switch and softirq in the end of hardirq have the idle time already flushed from the hardirq entry. In the other cases we always account to system/irq time: * On hardirq exit we account the time to hardirq time. * On softirq exit we account the time to softirq time. To optimize this and avoid the indirect call to vtime_account() and the checks it performs, specialize the vtime irq APIs and only perform the check on irq entry. Irq exit can directly call vtime_account_system(). CONFIG_IRQ_TIME_ACCOUNTING behaviour doesn't change and directly maps to its own vtime_account() implementation. One may want to take benefits from the new APIs to optimize irq time accounting as well in the future. Signed-off-by: Frederic Weisbecker Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Thomas Gleixner Cc: Steven Rostedt Cc: Paul Gortmaker --- include/linux/hardirq.h | 4 ++-- include/linux/vtime.h | 25 +++++++++++++++++++++++++ 2 files changed, 27 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hardirq.h b/include/linux/hardirq.h index b083a475423d..624ef3f45c8e 100644 --- a/include/linux/hardirq.h +++ b/include/linux/hardirq.h @@ -153,7 +153,7 @@ extern void rcu_nmi_exit(void); */ #define __irq_enter() \ do { \ - vtime_account(current); \ + vtime_account_irq_enter(current); \ add_preempt_count(HARDIRQ_OFFSET); \ trace_hardirq_enter(); \ } while (0) @@ -169,7 +169,7 @@ extern void irq_enter(void); #define __irq_exit() \ do { \ trace_hardirq_exit(); \ - vtime_account(current); \ + vtime_account_irq_exit(current); \ sub_preempt_count(HARDIRQ_OFFSET); \ } while (0) diff --git a/include/linux/vtime.h b/include/linux/vtime.h index b9fc4f9ab470..c35c02223da8 100644 --- a/include/linux/vtime.h +++ b/include/linux/vtime.h @@ -21,4 +21,29 @@ static inline void vtime_account(struct task_struct *tsk) extern void vtime_account(struct task_struct *tsk); #endif +static inline void vtime_account_irq_enter(struct task_struct *tsk) +{ + /* + * Hardirq can interrupt idle task anytime. So we need vtime_account() + * that performs the idle check in CONFIG_VIRT_CPU_ACCOUNTING. + * Softirq can also interrupt idle task directly if it calls + * local_bh_enable(). Such case probably don't exist but we never know. + * Ksoftirqd is not concerned because idle time is flushed on context + * switch. Softirqs in the end of hardirqs are also not a problem because + * the idle time is flushed on hardirq time already. + */ + vtime_account(tsk); +} + +static inline void vtime_account_irq_exit(struct task_struct *tsk) +{ +#ifdef CONFIG_VIRT_CPU_ACCOUNTING + /* On hard|softirq exit we always account to hard|softirq cputime */ + __vtime_account_system(tsk); +#endif +#ifdef CONFIG_IRQ_TIME_ACCOUNTING + vtime_account(tsk); +#endif +} + #endif /* _LINUX_KERNEL_VTIME_H */ -- cgit v1.2.3 From 3e1df4f506836e6bea1ab61cf88c75c8b1840643 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Sat, 6 Oct 2012 05:23:22 +0200 Subject: cputime: Separate irqtime accounting from generic vtime vtime_account() doesn't have the same role in CONFIG_VIRT_CPU_ACCOUNTING and CONFIG_IRQ_TIME_ACCOUNTING. In the first case it handles time accounting in any context. In the second case it only handles irq time accounting. So when vtime_account() is called from outside vtime_account_irq_*() this call is pointless to CONFIG_IRQ_TIME_ACCOUNTING. To fix the confusion, change vtime_account() to irqtime_account_irq() in CONFIG_IRQ_TIME_ACCOUNTING. This way we ensure future account_vtime() calls won't waste useless cycles in the irqtime APIs. Signed-off-by: Frederic Weisbecker Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Thomas Gleixner Cc: Steven Rostedt Cc: Paul Gortmaker --- include/linux/vtime.h | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/vtime.h b/include/linux/vtime.h index c35c02223da8..0c2a2d303020 100644 --- a/include/linux/vtime.h +++ b/include/linux/vtime.h @@ -8,17 +8,18 @@ extern void vtime_task_switch(struct task_struct *prev); extern void __vtime_account_system(struct task_struct *tsk); extern void vtime_account_system(struct task_struct *tsk); extern void __vtime_account_idle(struct task_struct *tsk); +extern void vtime_account(struct task_struct *tsk); #else static inline void vtime_task_switch(struct task_struct *prev) { } +static inline void __vtime_account_system(struct task_struct *tsk) { } static inline void vtime_account_system(struct task_struct *tsk) { } +static inline void vtime_account(struct task_struct *tsk) { } #endif -#if !defined(CONFIG_VIRT_CPU_ACCOUNTING) && !defined(CONFIG_IRQ_TIME_ACCOUNTING) -static inline void vtime_account(struct task_struct *tsk) -{ -} +#ifdef CONFIG_IRQ_TIME_ACCOUNTING +extern void irqtime_account_irq(struct task_struct *tsk); #else -extern void vtime_account(struct task_struct *tsk); +static inline void irqtime_account_irq(struct task_struct *tsk) { } #endif static inline void vtime_account_irq_enter(struct task_struct *tsk) @@ -33,17 +34,14 @@ static inline void vtime_account_irq_enter(struct task_struct *tsk) * the idle time is flushed on hardirq time already. */ vtime_account(tsk); + irqtime_account_irq(tsk); } static inline void vtime_account_irq_exit(struct task_struct *tsk) { -#ifdef CONFIG_VIRT_CPU_ACCOUNTING /* On hard|softirq exit we always account to hard|softirq cputime */ __vtime_account_system(tsk); -#endif -#ifdef CONFIG_IRQ_TIME_ACCOUNTING - vtime_account(tsk); -#endif + irqtime_account_irq(tsk); } #endif /* _LINUX_KERNEL_VTIME_H */ -- cgit v1.2.3 From 81c52c56e2b43589091ee29038bcf793d3f184ab Mon Sep 17 00:00:00 2001 From: Xiao Guangrong Date: Tue, 16 Oct 2012 20:10:59 +0800 Subject: KVM: do not treat noslot pfn as a error pfn This patch filters noslot pfn out from error pfns based on Marcelo comment: noslot pfn is not a error pfn After this patch, - is_noslot_pfn indicates that the gfn is not in slot - is_error_pfn indicates that the gfn is in slot but the error is occurred when translate the gfn to pfn - is_error_noslot_pfn indicates that the pfn either it is error pfns or it is noslot pfn And is_invalid_pfn can be removed, it makes the code more clean Signed-off-by: Xiao Guangrong Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 28 ++++++++++++++++++++-------- 1 file changed, 20 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 82e2c783a21e..99a47627e046 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -58,28 +58,40 @@ /* * For the normal pfn, the highest 12 bits should be zero, - * so we can mask these bits to indicate the error. + * so we can mask bit 62 ~ bit 52 to indicate the error pfn, + * mask bit 63 to indicate the noslot pfn. */ -#define KVM_PFN_ERR_MASK (0xfffULL << 52) +#define KVM_PFN_ERR_MASK (0x7ffULL << 52) +#define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52) +#define KVM_PFN_NOSLOT (0x1ULL << 63) #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK) #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1) -#define KVM_PFN_ERR_BAD (KVM_PFN_ERR_MASK + 2) -#define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 3) +#define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2) +/* + * error pfns indicate that the gfn is in slot but faild to + * translate it to pfn on host. + */ static inline bool is_error_pfn(pfn_t pfn) { return !!(pfn & KVM_PFN_ERR_MASK); } -static inline bool is_noslot_pfn(pfn_t pfn) +/* + * error_noslot pfns indicate that the gfn can not be + * translated to pfn - it is not in slot or failed to + * translate it to pfn. + */ +static inline bool is_error_noslot_pfn(pfn_t pfn) { - return pfn == KVM_PFN_ERR_BAD; + return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK); } -static inline bool is_invalid_pfn(pfn_t pfn) +/* noslot pfn indicates that the gfn is not in slot. */ +static inline bool is_noslot_pfn(pfn_t pfn) { - return !is_noslot_pfn(pfn) && is_error_pfn(pfn); + return pfn == KVM_PFN_NOSLOT; } #define KVM_HVA_ERR_BAD (PAGE_OFFSET) -- cgit v1.2.3 From 37c67d03989eca60b28d67398d9388f653454c5d Mon Sep 17 00:00:00 2001 From: Paul Walmsley Date: Mon, 29 Oct 2012 20:49:44 -0600 Subject: ARM: OMAP2+: WDT: move init; add read_reset_sources pdata function pointer The OMAP watchdog timer driver directly calls a function exported by code in arch/arm/mach-omap2. This is not good; it tightly couples this driver to the mach-omap2 integration code. Instead, add a temporary platform_data function pointer to abstract this function call. A subsequent patch will convert the watchdog driver to use this function pointer. This patch also moves the device creation code out of arch/arm/mach-omap2/devices.c and into arch/arm/mach-omap2/wd_timer.c. This is another step towards the removal of arch/arm/mach-omap2/devices.c. Cc: Wim Van Sebroeck Acked-by: Wim Van Sebroeck [paul@pwsan.com: skip wd_timer device creation when DT blob is present] Signed-off-by: Paul Walmsley --- include/linux/platform_data/omap-wd-timer.h | 38 +++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 include/linux/platform_data/omap-wd-timer.h (limited to 'include/linux') diff --git a/include/linux/platform_data/omap-wd-timer.h b/include/linux/platform_data/omap-wd-timer.h new file mode 100644 index 000000000000..d75f5f802d98 --- /dev/null +++ b/include/linux/platform_data/omap-wd-timer.h @@ -0,0 +1,38 @@ +/* + * OMAP2+ WDTIMER-specific function prototypes + * + * Copyright (C) 2012 Texas Instruments, Inc. + * Paul Walmsley + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef __LINUX_PLATFORM_DATA_OMAP_WD_TIMER_H +#define __LINUX_PLATFORM_DATA_OMAP_WD_TIMER_H + +#include + +/* + * Standardized OMAP reset source bits + * + * This is a subset of the ones listed in arch/arm/mach-omap2/prm.h + * and are the only ones needed in the watchdog driver. + */ +#define OMAP_MPU_WD_RST_SRC_ID_SHIFT 3 + +/** + * struct omap_wd_timer_platform_data - WDTIMER integration to the host SoC + * @read_reset_sources - fn ptr for the SoC to indicate the last reset cause + * + * The function pointed to by @read_reset_sources must return its data + * in a standard format - search for RST_SRC_ID_SHIFT in + * arch/arm/mach-omap2 + */ +struct omap_wd_timer_platform_data { + u32 (*read_reset_sources)(void); +}; + +#endif -- cgit v1.2.3 From b3343a2a2c95b3b7ed4f6596e860c4276ba46217 Mon Sep 17 00:00:00 2001 From: John Fastabend Date: Tue, 18 Sep 2012 00:01:12 +0000 Subject: net, ixgbe: handle link local multicast addresses in SR-IOV mode In SR-IOV mode the PF driver acts as the uplink port and is used to send control packets e.g. lldpad, stp, etc. eth0.1 eth0.2 eth0 VF VF PF | | | <-- stand-in for uplink | | | -------------------------- | Embedded Switch | -------------------------- | MAC <-- uplink But the embedded switch is setup to forward multicast addresses to all interfaces both VFs and PF and onto the physical link. This results in reserved MAC addresses used by control protocols to be forwarded over the switch onto the VF. In the LLDP case the PF sends an LLDPDU and it is currently being forwarded to all the VFs who then see the PF as a peer. This is incorrect. This patch adds the multicast addresses to the RAR table in the hardware to prevent this behavior. Signed-off-by: John Fastabend Tested-by: Phil Schmitt Tested-by: Sibai Li Signed-off-by: Jeff Kirsher --- include/linux/etherdevice.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include/linux') diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h index b006ba0a9f42..45ded4be7b43 100644 --- a/include/linux/etherdevice.h +++ b/include/linux/etherdevice.h @@ -51,6 +51,25 @@ extern struct net_device *alloc_etherdev_mqs(int sizeof_priv, unsigned int txqs, #define alloc_etherdev(sizeof_priv) alloc_etherdev_mq(sizeof_priv, 1) #define alloc_etherdev_mq(sizeof_priv, count) alloc_etherdev_mqs(sizeof_priv, count, count) +/* Reserved Ethernet Addresses per IEEE 802.1Q */ +static const u8 br_reserved_address[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 }; + +/** + * is_link_local - Determine if given Eth addr is a link local mcast address. + * @addr: Pointer to a six-byte array containing the Ethernet address + * + * Return true if address is link local reserved addr (01:80:c2:00:00:0X) per + * IEEE 802.1Q 8.6.3 Frame filtering. + */ +static inline int is_link_local(const unsigned char *dest) +{ + __be16 *a = (__be16 *)dest; + static const __be16 *b = (const __be16 *)br_reserved_address; + static const __be16 m = cpu_to_be16(0xfff0); + + return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | ((a[2] ^ b[2]) & m)) == 0; +} + /** * is_zero_ether_addr - Determine if give Ethernet address is all zeros. * @addr: Pointer to a six-byte array containing the Ethernet address -- cgit v1.2.3 From 02b91b55260f7a1bdc8da25866cf27f726f5788f Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Thu, 28 Jun 2012 18:26:52 +0200 Subject: drbd: introduce stop-sector to online verify We now can schedule only a specific range of sectors for online verify, or interrupt a running verify without interrupting the connection. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg Signed-off-by: Jens Axboe --- include/linux/drbd.h | 2 +- include/linux/drbd_nl.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 47e3d4850584..4a7eccbd1292 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -56,7 +56,7 @@ extern const char *drbd_buildtag(void); #define REL_VERSION "8.3.13" #define API_VERSION 88 #define PRO_VERSION_MIN 86 -#define PRO_VERSION_MAX 96 +#define PRO_VERSION_MAX 97 enum drbd_io_error_p { diff --git a/include/linux/drbd_nl.h b/include/linux/drbd_nl.h index a8706f08ab36..f6a576df19e0 100644 --- a/include/linux/drbd_nl.h +++ b/include/linux/drbd_nl.h @@ -145,6 +145,7 @@ NL_PACKET(dump_ee, 24, NL_PACKET(start_ov, 25, NL_INT64( 66, T_MAY_IGNORE, start_sector) + NL_INT64( 90, T_MANDATORY, stop_sector) ) NL_PACKET(new_c_uuid, 26, -- cgit v1.2.3 From ccae7868b0c5697508a541c531cf96b361d62c1c Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Wed, 26 Sep 2012 14:07:04 +0200 Subject: drbd: log request sector offset and size for IO errors Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg Signed-off-by: Jens Axboe --- include/linux/drbd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 4a7eccbd1292..94f58a102bbb 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -53,7 +53,7 @@ extern const char *drbd_buildtag(void); -#define REL_VERSION "8.3.13" +#define REL_VERSION "8.3.14" #define API_VERSION 88 #define PRO_VERSION_MIN 86 #define PRO_VERSION_MAX 97 -- cgit v1.2.3 From 5d9db883761ad1bc2245fd3018715549b974203d Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Fri, 5 Oct 2012 13:54:56 +0800 Subject: efi: Add support for a UEFI variable filesystem The existing EFI variables code only supports variables of up to 1024 bytes. This limitation existed in version 0.99 of the EFI specification, but was removed before any full releases. Since variables can now be larger than a single page, sysfs isn't the best interface for this. So, instead, let's add a filesystem. Variables can be read, written and created, with the first 4 bytes of each variable representing its UEFI attributes. The create() method doesn't actually commit to flash since zero-length variables can't exist per-spec. Updates from Jeremy Kerr . Signed-off-by: Matthew Garrett Signed-off-by: Jeremy Kerr Signed-off-by: Matt Fleming --- include/linux/efi.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/efi.h b/include/linux/efi.h index 8670eb1eb8cd..b2af1571592b 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -29,7 +29,12 @@ #define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1))) #define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1))) #define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1))) +#define EFI_NOT_READY ( 6 | (1UL << (BITS_PER_LONG-1))) +#define EFI_DEVICE_ERROR ( 7 | (1UL << (BITS_PER_LONG-1))) +#define EFI_WRITE_PROTECTED ( 8 | (1UL << (BITS_PER_LONG-1))) +#define EFI_OUT_OF_RESOURCES ( 9 | (1UL << (BITS_PER_LONG-1))) #define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1))) +#define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1))) typedef unsigned long efi_status_t; typedef u8 efi_bool_t; -- cgit v1.2.3 From 605e70c7aa1b7b0d554baf945630c1d606bbfbc3 Mon Sep 17 00:00:00 2001 From: "Lee, Chun-Yi" Date: Fri, 5 Oct 2012 13:54:56 +0800 Subject: efi: add efivars kobject to efi sysfs folder UEFI variable filesystem need a new mount point, so this patch add efivars kobject to efi_kobj for create a /sys/firmware/efi/efivars folder. Cc: Matthew Garrett Cc: H. Peter Anvin Signed-off-by: Lee, Chun-Yi Signed-off-by: Jeremy Kerr Signed-off-by: Matt Fleming --- include/linux/efi.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/efi.h b/include/linux/efi.h index b2af1571592b..337aefbfb003 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -662,6 +662,7 @@ struct efivars { spinlock_t lock; struct list_head list; struct kset *kset; + struct kobject *kobject; struct bin_attribute *new_var, *del_var; const struct efivar_operations *ops; struct efivar_entry *walk_entry; -- cgit v1.2.3 From bd52276fa1d420c3a504b76ffaaa1642cc79d4c4 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Fri, 25 May 2012 16:20:31 +0100 Subject: x86-64/efi: Use EFI to deal with platform wall clock (again) Other than ix86, x86-64 on EFI so far didn't set the {g,s}et_wallclock accessors to the EFI routines, thus incorrectly using raw RTC accesses instead. Simply removing the #ifdef around the respective code isn't enough, however: While so far early get-time calls were done in physical mode, this doesn't work properly for x86-64, as virtual addresses would still need to be set up for all runtime regions (which wasn't the case on the system I have access to), so instead the patch moves the call to efi_enter_virtual_mode() ahead (which in turn allows to drop all code related to calling efi-get-time in physical mode). Additionally the earlier calling of efi_set_executable() requires the CPA code to cope, i.e. during early boot it must be avoided to call cpa_flush_array(), as the first thing this function does is a BUG_ON(irqs_disabled()). Also make the two EFI functions in question here static - they're not being referenced elsewhere. History: This commit was originally merged as bacef661acdb ("x86-64/efi: Use EFI to deal with platform wall clock") but it resulted in some ASUS machines no longer booting due to a firmware bug, and so was reverted in f026cfa82f62. A pre-emptive fix for the buggy ASUS firmware was merged in 03a1c254975e ("x86, efi: 1:1 pagetable mapping for virtual EFI calls") so now this patch can be reapplied. Signed-off-by: Jan Beulich Tested-by: Matt Fleming Acked-by: Matthew Garrett Cc: Ingo Molnar Cc: Peter Zijlstra Cc: H. Peter Anvin Signed-off-by: Matt Fleming [added commit history] --- include/linux/efi.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/efi.h b/include/linux/efi.h index 337aefbfb003..5e2308d9c6be 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -516,8 +516,6 @@ extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size); extern int __init efi_uart_console_only (void); extern void efi_initialize_iomem_resources(struct resource *code_resource, struct resource *data_resource, struct resource *bss_resource); -extern unsigned long efi_get_time(void); -extern int efi_set_rtc_mmss(unsigned long nowtime); extern void efi_reserve_boot_services(void); extern struct efi_memory_map memmap; -- cgit v1.2.3 From e05ed4d1fad9e730995abb08cb9bc3bffac5018b Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Mon, 15 Oct 2012 10:19:39 -0700 Subject: swiotlb: Return physical addresses when calling swiotlb_tbl_map_single This change makes it so that swiotlb_tbl_map_single will return a physical address instead of a virtual address when called. The advantage to this once again is that we are avoiding a number of virt_to_phys and phys_to_virt translations by working with everything as a physical address. One change I had to make in order to support using physical addresses is that I could no longer trust 0 to be a invalid physical address on all platforms. So instead I made it so that ~0 is returned on error. This should never be a valid return value as it implies that only one byte would be available for use. In order to clarify things since we now have 2 physical addresses in use inside of swiotlb_tbl_map_single I am renaming phys to orig_addr, and dma_addr to tlb_addr. This way is should be clear that orig_addr is contained within io_orig_addr and tlb_addr is an address within the io_tlb_addr buffer. Signed-off-by: Alexander Duyck Signed-off-by: Konrad Rzeszutek Wilk --- include/linux/swiotlb.h | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h index 8d08b3ed406d..1995f3e04fed 100644 --- a/include/linux/swiotlb.h +++ b/include/linux/swiotlb.h @@ -34,9 +34,14 @@ enum dma_sync_target { SYNC_FOR_CPU = 0, SYNC_FOR_DEVICE = 1, }; -extern void *swiotlb_tbl_map_single(struct device *hwdev, dma_addr_t tbl_dma_addr, - phys_addr_t phys, size_t size, - enum dma_data_direction dir); + +/* define the last possible byte of physical address space as a mapping error */ +#define SWIOTLB_MAP_ERROR (~(phys_addr_t)0x0) + +extern phys_addr_t swiotlb_tbl_map_single(struct device *hwdev, + dma_addr_t tbl_dma_addr, + phys_addr_t phys, size_t size, + enum dma_data_direction dir); extern void swiotlb_tbl_unmap_single(struct device *hwdev, char *dma_addr, size_t size, enum dma_data_direction dir); -- cgit v1.2.3 From 61ca08c3220032dd88815b3465d56cb779258168 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Mon, 15 Oct 2012 10:19:44 -0700 Subject: swiotlb: Use physical addresses for swiotlb_tbl_unmap_single This change makes it so that the unmap functionality also uses physical addresses. This helps to further reduce the use of virt_to_phys and phys_to_virt functions. In order to clarify things since we now have 2 physical addresses in use inside of swiotlb_tbl_unmap_single I am renaming phys to orig_addr, and dma_addr to tlb_addr. This way is should be clear that orig_addr is contained within io_orig_addr and tlb_addr is an address within the io_tlb_addr buffer. Signed-off-by: Alexander Duyck Signed-off-by: Konrad Rzeszutek Wilk --- include/linux/swiotlb.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h index 1995f3e04fed..291643c6b88b 100644 --- a/include/linux/swiotlb.h +++ b/include/linux/swiotlb.h @@ -43,7 +43,8 @@ extern phys_addr_t swiotlb_tbl_map_single(struct device *hwdev, phys_addr_t phys, size_t size, enum dma_data_direction dir); -extern void swiotlb_tbl_unmap_single(struct device *hwdev, char *dma_addr, +extern void swiotlb_tbl_unmap_single(struct device *hwdev, + phys_addr_t tlb_addr, size_t size, enum dma_data_direction dir); extern void swiotlb_tbl_sync_single(struct device *hwdev, char *dma_addr, -- cgit v1.2.3 From fbfda893eb570bbe9e9ad9128b6e9cf2a1e48c87 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Mon, 15 Oct 2012 10:19:49 -0700 Subject: swiotlb: Use physical addresses instead of virtual in swiotlb_tbl_sync_single This change makes it so that the sync functionality also uses physical addresses. This helps to further reduce the use of virt_to_phys and phys_to_virt functions. In order to clarify things since we now have 2 physical addresses in use inside of swiotlb_tbl_sync_single I am renaming phys to orig_addr, and dma_addr to tlb_addr. This way is should be clear that orig_addr is contained within io_orig_addr and tlb_addr is an address within the io_tlb_addr buffer. Signed-off-by: Alexander Duyck Signed-off-by: Konrad Rzeszutek Wilk --- include/linux/swiotlb.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h index 291643c6b88b..e0ac98fd81a9 100644 --- a/include/linux/swiotlb.h +++ b/include/linux/swiotlb.h @@ -47,7 +47,8 @@ extern void swiotlb_tbl_unmap_single(struct device *hwdev, phys_addr_t tlb_addr, size_t size, enum dma_data_direction dir); -extern void swiotlb_tbl_sync_single(struct device *hwdev, char *dma_addr, +extern void swiotlb_tbl_sync_single(struct device *hwdev, + phys_addr_t tlb_addr, size_t size, enum dma_data_direction dir, enum dma_sync_target target); -- cgit v1.2.3 From af51a9f1848ff50079a10def56a2c064f326af22 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Mon, 15 Oct 2012 10:19:55 -0700 Subject: swiotlb: Do not export swiotlb_bounce since there are no external consumers Currently swiotlb is the only consumer for swiotlb_bounce. Since that is the case it doesn't make much sense to be exporting it so make it a static function only. In addition we can save a few more lines of code by making it so that it accepts the DMA address as a physical address instead of a virtual one. This is the last piece in essentially pushing all of the DMA address values to use physical addresses in swiotlb. In order to clarify things since we now have 2 physical addresses in use inside of swiotlb_bounce I am renaming phys to orig_addr, and dma_addr to tlb_addr. This way is should be clear that orig_addr is contained within io_orig_addr and tlb_addr is an address within the io_tlb_addr buffer. Signed-off-by: Alexander Duyck Signed-off-by: Konrad Rzeszutek Wilk --- include/linux/swiotlb.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h index e0ac98fd81a9..071d62c214a6 100644 --- a/include/linux/swiotlb.h +++ b/include/linux/swiotlb.h @@ -53,9 +53,6 @@ extern void swiotlb_tbl_sync_single(struct device *hwdev, enum dma_sync_target target); /* Accessory functions. */ -extern void swiotlb_bounce(phys_addr_t phys, char *dma_addr, size_t size, - enum dma_data_direction dir); - extern void *swiotlb_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_handle, gfp_t flags); -- cgit v1.2.3 From 5e3b08749951e5746d3e747f1ffae37eff2d08d5 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Mon, 29 Oct 2012 09:31:12 +0100 Subject: staging: drm/omap: add support for ARCH_MULTIPLATFORM Remove usage of plat/cpu.h and get information from platform data instead. This enables omapdrm to be built with ARCH_MULTIPLATFORM. Signed-off-by: Rob Clark Signed-off-by: Greg Kroah-Hartman --- include/linux/platform_data/omap_drm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/omap_drm.h b/include/linux/platform_data/omap_drm.h index 3da73bdc2031..f4e4a237ebd2 100644 --- a/include/linux/platform_data/omap_drm.h +++ b/include/linux/platform_data/omap_drm.h @@ -46,6 +46,7 @@ struct omap_kms_platform_data { }; struct omap_drm_platform_data { + uint32_t omaprev; struct omap_kms_platform_data *kms_pdata; }; -- cgit v1.2.3 From dc4dc36056392c0b0b1ca9e81bebff964b9297e0 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Tue, 30 Oct 2012 12:34:05 +0530 Subject: spi: tegra: add spi driver for SLINK controller Tegra20/Tegra30 supports the spi interface through its SLINK controller. Add spi driver for SLINK controller. Signed-off-by: Laxman Dewangan Reviewed-by: Stephen Warren Signed-off-by: Mark Brown --- include/linux/spi/spi-tegra.h | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 include/linux/spi/spi-tegra.h (limited to 'include/linux') diff --git a/include/linux/spi/spi-tegra.h b/include/linux/spi/spi-tegra.h new file mode 100644 index 000000000000..786932c62edb --- /dev/null +++ b/include/linux/spi/spi-tegra.h @@ -0,0 +1,40 @@ +/* + * spi-tegra.h: SPI interface for Nvidia Tegra20 SLINK controller. + * + * Copyright (C) 2011 NVIDIA Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#ifndef _LINUX_SPI_TEGRA_H +#define _LINUX_SPI_TEGRA_H + +struct tegra_spi_platform_data { + int dma_req_sel; + unsigned int spi_max_frequency; +}; + +/* + * Controller data from device to pass some info like + * hw based chip select can be used or not and if yes + * then CS hold and setup time. + */ +struct tegra_spi_device_controller_data { + bool is_hw_based_cs; + int cs_setup_clk_count; + int cs_hold_clk_count; +}; + +#endif /* _LINUX_SPI_TEGRA_H */ -- cgit v1.2.3 From 1778794031aae75d4464904319d320edc3e77d39 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Tue, 30 Oct 2012 14:31:10 -0600 Subject: PCI: Separate out pci_assign_unassigned_bus_resources() It is main portion of pci_rescan_bus(). Separate it out and prepare to use it for PCI root bus hot add later. Signed-off-by: Yinghai Lu Signed-off-by: Bjorn Helgaas --- include/linux/pci.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index ee2179546c63..f543eb3b1c0c 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -958,6 +958,7 @@ void pci_bus_size_bridges(struct pci_bus *bus); int pci_claim_resource(struct pci_dev *, int); void pci_assign_unassigned_resources(void); void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge); +void pci_assign_unassigned_bus_resources(struct pci_bus *bus); void pdev_enable_device(struct pci_dev *); int pci_enable_resources(struct pci_dev *, int mask); void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *), -- cgit v1.2.3 From 242860a47a75b933a79a30f6a40bf4858f4a3ecc Mon Sep 17 00:00:00 2001 From: Ezequiel Garcia Date: Fri, 19 Oct 2012 09:33:12 -0300 Subject: mm/sl[aou]b: Move common kmem_cache_size() to slab.h This function is identically defined in all three allocators and it's trivial to move it to slab.h Since now it's static, inline, header-defined function this patch also drops the EXPORT_SYMBOL tag. Cc: Pekka Enberg Cc: Matt Mackall Acked-by: Christoph Lameter Signed-off-by: Ezequiel Garcia Signed-off-by: Pekka Enberg --- include/linux/slab.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/slab.h b/include/linux/slab.h index 83d1a1454b7e..743a10415122 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -128,7 +128,6 @@ struct kmem_cache *kmem_cache_create(const char *, size_t, size_t, void kmem_cache_destroy(struct kmem_cache *); int kmem_cache_shrink(struct kmem_cache *); void kmem_cache_free(struct kmem_cache *, void *); -unsigned int kmem_cache_size(struct kmem_cache *); /* * Please use this macro to create slab caches. Simply specify the @@ -388,6 +387,14 @@ static inline void *kzalloc_node(size_t size, gfp_t flags, int node) return kmalloc_node(size, flags | __GFP_ZERO, node); } +/* + * Determine the size of a slab object + */ +static inline unsigned int kmem_cache_size(struct kmem_cache *s) +{ + return s->object_size; +} + void __init kmem_cache_init_late(void); #endif /* _LINUX_SLAB_H */ -- cgit v1.2.3 From bcb2f99c6c43a8da6cb4002e8b0acf6f1275f3a8 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Mon, 22 Oct 2012 22:14:57 +0200 Subject: usb: gadget: use a computation macro for INT endpoint interval The 5+4 magic for HS tries to aim 32ms which is also what is intended with 1 << 5 for FS. This little macro should make this easier to understand. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- include/linux/usb/composite.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index f8dda0621800..8634a127bdd3 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -38,6 +38,7 @@ #include #include #include +#include /* * USB function drivers should return USB_GADGET_DELAYED_STATUS if they @@ -51,6 +52,7 @@ /* big enough to hold our biggest descriptor */ #define USB_COMP_EP0_BUFSIZ 1024 +#define USB_MS_TO_HS_INTERVAL(x) (ilog2((x * 1000 / 125)) + 1) struct usb_configuration; /** -- cgit v1.2.3 From 10287baec761d33f0a82d84b46e37a44030350d8 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Mon, 22 Oct 2012 22:15:06 +0200 Subject: usb: gadget: always update HS/SS descriptors and create a copy of them HS and SS descriptors are staticaly created. They are updated during the bind process with the endpoint address, string id or interface numbers. After that, the descriptor chain is linked to struct usb_function which is used by composite in order to serve the GET_DESCRIPTOR requests, number of available configs and so on. There is no need to assign the HS descriptor only if the UDC supports HS speed because composite won't report those to the host if HS support has not been reached. The same reasoning is valid for SS. This patch makes sure each function updates HS/SS descriptors unconditionally and uses the newly introduced helper function to create a copy the descriptors for the speed which is supported by the UDC. While at that, also rename f->descriptors to f->fs_descriptors in order to make it more explicit what that means. Cc: Laurent Pinchart Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- include/linux/usb/composite.h | 2 +- include/linux/usb/gadget.h | 7 +++++++ 2 files changed, 8 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index 8634a127bdd3..b09c37e04a91 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -119,7 +119,7 @@ struct usb_configuration; struct usb_function { const char *name; struct usb_gadget_strings **strings; - struct usb_descriptor_header **descriptors; + struct usb_descriptor_header **fs_descriptors; struct usb_descriptor_header **hs_descriptors; struct usb_descriptor_header **ss_descriptors; diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 5b6e50888248..0af6569b8cc6 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -939,6 +939,13 @@ static inline void usb_free_descriptors(struct usb_descriptor_header **v) kfree(v); } +struct usb_function; +int usb_assign_descriptors(struct usb_function *f, + struct usb_descriptor_header **fs, + struct usb_descriptor_header **hs, + struct usb_descriptor_header **ss); +void usb_free_all_descriptors(struct usb_function *f); + /*-------------------------------------------------------------------------*/ /* utility to simplify map/unmap of usb_requests to/from DMA */ -- cgit v1.2.3 From e5a55a898720096f43bc24938f8875c0a1b34cd7 Mon Sep 17 00:00:00 2001 From: John Fastabend Date: Wed, 24 Oct 2012 08:12:57 +0000 Subject: net: create generic bridge ops The PF_BRIDGE:RTM_{GET|SET}LINK nlmsg family and type are currently embedded in the ./net/bridge module. This prohibits them from being used by other bridging devices. One example of this being hardware that has embedded bridging components. In order to use these nlmsg types more generically this patch adds two net_device_ops hooks. One to set link bridge attributes and another to dump the current bride attributes. ndo_bridge_setlink() ndo_bridge_getlink() CC: Lennert Buytenhek CC: Stephen Hemminger Signed-off-by: John Fastabend Signed-off-by: David S. Miller --- include/linux/netdevice.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index f8eda0276f03..7bf867c97043 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -887,6 +887,10 @@ struct netdev_fcoe_hbainfo { * struct net_device *dev, int idx) * Used to add FDB entries to dump requests. Implementers should add * entries to skb and update idx with the number of entries. + * + * int (*ndo_bridge_setlink)(struct net_device *dev, struct nlmsghdr *nlh) + * int (*ndo_bridge_getlink)(struct sk_buff *skb, u32 pid, u32 seq, + * struct net_device *dev) */ struct net_device_ops { int (*ndo_init)(struct net_device *dev); @@ -998,6 +1002,12 @@ struct net_device_ops { struct netlink_callback *cb, struct net_device *dev, int idx); + + int (*ndo_bridge_setlink)(struct net_device *dev, + struct nlmsghdr *nlh); + int (*ndo_bridge_getlink)(struct sk_buff *skb, + u32 pid, u32 seq, + struct net_device *dev); }; /* -- cgit v1.2.3 From 815cccbf10b27115fb3e5827bef26768616e5e27 Mon Sep 17 00:00:00 2001 From: John Fastabend Date: Wed, 24 Oct 2012 08:13:09 +0000 Subject: ixgbe: add setlink, getlink support to ixgbe and ixgbevf This adds support for the net device ops to manage the embedded hardware bridge on ixgbe devices. With this patch the bridge mode can be toggled between VEB and VEPA to support stacking macvlan devices or using the embedded switch without any SW component in 802.1Qbg/br environments. Additionally, this adds source address pruning to the ixgbevf driver to prune any frames sent back from a reflective relay on the switch. This is required because the existing hardware does not support this. Without it frames get pushed into the stack with its own src mac which is invalid per 802.1Qbg VEPA definition. Signed-off-by: John Fastabend Signed-off-by: David S. Miller --- include/linux/rtnetlink.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h index 7002bbfd5d4a..489dd7bb28ec 100644 --- a/include/linux/rtnetlink.h +++ b/include/linux/rtnetlink.h @@ -69,4 +69,7 @@ extern int ndo_dflt_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, struct net_device *dev, int idx); + +extern int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, + struct net_device *dev, u16 mode); #endif /* __LINUX_RTNETLINK_H */ -- cgit v1.2.3 From ecd5cf5dc5b07bc57aedf4c92453d6c343e3d840 Mon Sep 17 00:00:00 2001 From: Willem de Bruijn Date: Fri, 26 Oct 2012 11:52:08 +0000 Subject: net: compute skb->rxhash if nic hash may be 3-tuple Network device drivers can communicate a Toeplitz hash in skb->rxhash, but devices differ in their hashing capabilities. All compute a 5-tuple hash for TCP over IPv4, but for other connection-oriented protocols, they may compute only a 3-tuple. This breaks RPS load balancing, e.g., for TCP over IPv6 flows. Additionally, for GRE and other tunnels, the kernel computes a 5-tuple hash over the inner packet if possible, but devices do not. This patch recomputes the rxhash in software in all cases where it cannot be certain that a 5-tuple was computed. Device drivers can avoid recomputation by setting the skb->l4_rxhash flag. Recomputing adds cycles to each packet when RPS is enabled or the packet arrives over a tunnel. A comparison of 200x TCP_STREAM between two servers running unmodified netnext with rxhash computation in hardware vs software (using ethtool -K eth0 rxhash [on|off]) shows how much time is spent in __skb_get_rxhash in this worst case: 0.03% swapper [kernel.kallsyms] [k] __skb_get_rxhash 0.03% swapper [kernel.kallsyms] [k] __skb_get_rxhash 0.05% swapper [kernel.kallsyms] [k] __skb_get_rxhash With 200x TCP_RR it increases to 0.10% netperf [kernel.kallsyms] [k] __skb_get_rxhash 0.10% netperf [kernel.kallsyms] [k] __skb_get_rxhash 0.10% netperf [kernel.kallsyms] [k] __skb_get_rxhash I considered having the patch explicitly skips recomputation when it knows that it will not improve the hash (TCP over IPv4), but that conditional complicates code without saving many cycles in practice, because it has to take place after flow dissector. Signed-off-by: Willem de Bruijn Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/skbuff.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 6a2c34e6d962..a2a0bdb95a8f 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -643,7 +643,7 @@ extern unsigned int skb_find_text(struct sk_buff *skb, unsigned int from, extern void __skb_get_rxhash(struct sk_buff *skb); static inline __u32 skb_get_rxhash(struct sk_buff *skb) { - if (!skb->rxhash) + if (!skb->l4_rxhash) __skb_get_rxhash(skb); return skb->rxhash; -- cgit v1.2.3 From f3335031b9452baebfe49b8b5e55d3fe0c4677d1 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sat, 27 Oct 2012 02:26:17 +0000 Subject: net: filter: add vlan tag access BPF filters lack ability to access skb->vlan_tci This patch adds two new ancillary accessors : SKF_AD_VLAN_TAG (44) mapped to vlan_tx_tag_get(skb) SKF_AD_VLAN_TAG_PRESENT (48) mapped to vlan_tx_tag_present(skb) This allows libpcap/tcpdump to use a kernel filter instead of having to fallback to accept all packets, then filter them in user space. Signed-off-by: Eric Dumazet Suggested-by: Ani Sinha Suggested-by: Daniel Borkmann Signed-off-by: David S. Miller --- include/linux/filter.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/filter.h b/include/linux/filter.h index 24d251f3bab0..c9f0005c35e2 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -123,6 +123,8 @@ enum { BPF_S_ANC_CPU, BPF_S_ANC_ALU_XOR_X, BPF_S_ANC_SECCOMP_LD_W, + BPF_S_ANC_VLAN_TAG, + BPF_S_ANC_VLAN_TAG_PRESENT, }; #endif /* __LINUX_FILTER_H__ */ -- cgit v1.2.3 From c73cee717e7d5da0698acb720ad1219646fe4f46 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Wed, 31 Oct 2012 13:21:06 -0400 Subject: USB: EHCI: remove ehci_port_power() routine This patch (as1623) removes the ehci_port_power() routine and all the places that call it. There's no reason for ehci-hcd to change the port power settings; the hub driver takes care of all that stuff. There is one exception: When the controller is resumed from hibernation or following a loss of power, the ports that are supposed to be handed over to a companion controller must be powered on first. Otherwise the handover won't work. This process is not visible to the hub driver, so it has to be handled in ehci-hcd. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/ehci_pdriver.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/ehci_pdriver.h b/include/linux/usb/ehci_pdriver.h index 67ac74bde6d0..99238b096f7e 100644 --- a/include/linux/usb/ehci_pdriver.h +++ b/include/linux/usb/ehci_pdriver.h @@ -41,8 +41,6 @@ struct usb_ehci_pdata { unsigned has_synopsys_hc_bug:1; unsigned big_endian_desc:1; unsigned big_endian_mmio:1; - unsigned port_power_on:1; - unsigned port_power_off:1; unsigned no_io_watchdog:1; /* Turn on all power and clocks */ -- cgit v1.2.3 From 17b72feb2be14e6d37023267dc0e199e8e0e3fdc Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Wed, 31 Oct 2012 06:08:39 +0100 Subject: USB: add USB_DEVICE_INTERFACE_CLASS macro MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Matching on device and interface class with with unspecified subclass and protocol is sometimes useful. This is slightly different from USB_DEVICE_AND_INTERFACE_INFO which requires the full interface class/subclass/protocol triplet. Signed-off-by: Bjørn Mork Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb.h b/include/linux/usb.h index f51f9981de1e..689b14b26c8d 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -807,6 +807,22 @@ static inline int usb_make_path(struct usb_device *dev, char *buf, size_t size) .bcdDevice_lo = (lo), \ .bcdDevice_hi = (hi) +/** + * USB_DEVICE_INTERFACE_CLASS - describe a usb device with a specific interface class + * @vend: the 16 bit USB Vendor ID + * @prod: the 16 bit USB Product ID + * @cl: bInterfaceClass value + * + * This macro is used to create a struct usb_device_id that matches a + * specific interface class of devices. + */ +#define USB_DEVICE_INTERFACE_CLASS(vend, prod, cl) \ + .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \ + USB_DEVICE_ID_MATCH_INT_CLASS, \ + .idVendor = (vend), \ + .idProduct = (prod), \ + .bInterfaceClass = (cl) + /** * USB_DEVICE_INTERFACE_PROTOCOL - describe a usb device with a specific interface protocol * @vend: the 16 bit USB Vendor ID -- cgit v1.2.3 From 884bfe89a462fcc85c8abd96171519cf2fe70929 Mon Sep 17 00:00:00 2001 From: Slava Pestov Date: Fri, 15 Jul 2011 14:23:58 -0700 Subject: ring-buffer: Add a 'dropped events' counter The existing 'overrun' counter is incremented when the ring buffer wraps around, with overflow on (the default). We wanted a way to count requests lost from the buffer filling up with overflow off, too. I decided to add a new counter instead of retro-fitting the existing one because it seems like a different statistic to count conceptually, and also because of how the code was structured. Link: http://lkml.kernel.org/r/1310765038-26399-1-git-send-email-slavapestov@google.com Signed-off-by: Slava Pestov Signed-off-by: Steven Rostedt --- include/linux/ring_buffer.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h index 6c8835f74f79..2007375cfe77 100644 --- a/include/linux/ring_buffer.h +++ b/include/linux/ring_buffer.h @@ -166,6 +166,7 @@ unsigned long ring_buffer_overruns(struct ring_buffer *buffer); unsigned long ring_buffer_entries_cpu(struct ring_buffer *buffer, int cpu); unsigned long ring_buffer_overrun_cpu(struct ring_buffer *buffer, int cpu); unsigned long ring_buffer_commit_overrun_cpu(struct ring_buffer *buffer, int cpu); +unsigned long ring_buffer_dropped_events_cpu(struct ring_buffer *buffer, int cpu); u64 ring_buffer_time_stamp(struct ring_buffer *buffer, int cpu); void ring_buffer_normalize_time_stamp(struct ring_buffer *buffer, -- cgit v1.2.3 From 60efc15ae96c7aace8060411b0d5add20e1ab21e Mon Sep 17 00:00:00 2001 From: Michal Hocko Date: Thu, 25 Oct 2012 15:41:51 +0200 Subject: linux/kernel.h: Remove duplicate trace_printk declaration !CONFIG_TRACING both declares and defines (empty) trace_printk. The first one is not redundant so it can be removed. Link: http://lkml.kernel.org/r/1351172511-18125-1-git-send-email-mhocko@suse.cz Signed-off-by: Michal Hocko Signed-off-by: Steven Rostedt --- include/linux/kernel.h | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index a123b13b70fd..7785d5df6d8b 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -527,9 +527,6 @@ __ftrace_vprintk(unsigned long ip, const char *fmt, va_list ap); extern void ftrace_dump(enum ftrace_dump_mode oops_dump_mode); #else -static inline __printf(1, 2) -int trace_printk(const char *fmt, ...); - static inline void tracing_start(void) { } static inline void tracing_stop(void) { } static inline void ftrace_off_permanent(void) { } @@ -539,8 +536,8 @@ static inline void tracing_on(void) { } static inline void tracing_off(void) { } static inline int tracing_is_on(void) { return 0; } -static inline int -trace_printk(const char *fmt, ...) +static inline __printf(1, 2) +int trace_printk(const char *fmt, ...) { return 0; } -- cgit v1.2.3 From 293a7a0a165c4f8327bbcf396cee9ec672727c98 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 16 Oct 2012 15:07:49 -0700 Subject: genirq: Provide means to retrigger parent Attempts to retrigger nested threaded IRQs currently fail because they have no primary handler. In order to support retrigger of nested IRQs, the parent IRQ needs to be retriggered. To fix, when an IRQ needs to be resent, if the interrupt has a parent IRQ and runs in the context of the parent IRQ, then resend the parent. Also, handle_nested_irq() needs to clear the replay flag like the other handlers, otherwise check_irq_resend() will set it and it will never be cleared. Without clearing, it results in the first resend working fine, but check_irq_resend() returning early on subsequent resends because the replay flag is still set. Problem discovered on ARM/OMAP platforms where a nested IRQ that's also a wakeup IRQ happens late in suspend and needed to be retriggered during the resume process. [khilman@ti.com: changelog edits, clear IRQS_REPLAY in handle_nested_irq()] Reported-by: Kevin Hilman Tested-by: Kevin Hilman Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1350425269-11489-1-git-send-email-khilman@deeprootsystems.com Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 9 +++++++++ include/linux/irqdesc.h | 3 +++ 2 files changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 216b0ba109d7..526f10a637c1 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -392,6 +392,15 @@ static inline void irq_move_masked_irq(struct irq_data *data) { } extern int no_irq_affinity; +#ifdef CONFIG_HARDIRQS_SW_RESEND +int irq_set_parent(int irq, int parent_irq); +#else +static inline int irq_set_parent(int irq, int parent_irq) +{ + return 0; +} +#endif + /* * Built-in IRQ handlers for various IRQ types, * callable via desc->handle_irq() diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 0ba014c55056..623325e2ff97 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -11,6 +11,8 @@ struct irq_affinity_notify; struct proc_dir_entry; struct module; +struct irq_desc; + /** * struct irq_desc - interrupt descriptor * @irq_data: per irq and chip data passed down to chip functions @@ -65,6 +67,7 @@ struct irq_desc { #ifdef CONFIG_PROC_FS struct proc_dir_entry *dir; #endif + int parent_irq; struct module *owner; const char *name; } ____cacheline_internodealigned_in_smp; -- cgit v1.2.3 From 86b00e0da6be7bbc16412f126c5b548ac5d91d50 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Thu, 25 Oct 2012 23:34:42 -0500 Subject: rbd: get parent spec for version 2 images Add support for getting the the information identifying the parent image for rbd images that have them. The child image holds a reference to its parent image specification structure. Create a new entry "parent" in /sys/bus/rbd/image/N/ to report the identifying information for the parent image, if any. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/rados.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ceph/rados.h b/include/linux/ceph/rados.h index 0a99099801a4..15077db662ed 100644 --- a/include/linux/ceph/rados.h +++ b/include/linux/ceph/rados.h @@ -87,6 +87,8 @@ struct ceph_pg { * * lpgp_num -- as above. */ +#define CEPH_NOPOOL ((__u64) (-1)) /* pool id not defined */ + #define CEPH_PG_TYPE_REP 1 #define CEPH_PG_TYPE_RAID4 2 #define CEPH_PG_POOL_VERSION 2 -- cgit v1.2.3 From 72afc71ffca0f444ee0e1ef8c7e34ab209bb48b3 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Tue, 30 Oct 2012 19:40:33 -0500 Subject: libceph: define ceph_pg_pool_name_by_id() Define and export function ceph_pg_pool_name_by_id() to supply the name of a pg pool whose id is given. This will be used by the next patch. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osdmap.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h index e88a620b9f8a..5ea57ba69320 100644 --- a/include/linux/ceph/osdmap.h +++ b/include/linux/ceph/osdmap.h @@ -123,6 +123,7 @@ extern int ceph_calc_pg_acting(struct ceph_osdmap *osdmap, struct ceph_pg pgid, extern int ceph_calc_pg_primary(struct ceph_osdmap *osdmap, struct ceph_pg pgid); +extern const char *ceph_pg_pool_name_by_id(struct ceph_osdmap *map, u64 id); extern int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char *name); #endif -- cgit v1.2.3 From a8fc92778080c845eaadc369a0ecf5699a03bef0 Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Thu, 1 Nov 2012 02:01:48 +0000 Subject: sk-filter: Add ability to get socket filter program (v2) The SO_ATTACH_FILTER option is set only. I propose to add the get ability by using SO_ATTACH_FILTER in getsockopt. To be less irritating to eyes the SO_GET_FILTER alias to it is declared. This ability is required by checkpoint-restore project to be able to save full state of a socket. There are two issues with getting filter back. First, kernel modifies the sock_filter->code on filter load, thus in order to return the filter element back to user we have to decode it into user-visible constants. Fortunately the modification in question is interconvertible. Second, the BPF_S_ALU_DIV_K code modifies the command argument k to speed up the run-time division by doing kernel_k = reciprocal(user_k). Bad news is that different user_k may result in same kernel_k, so we can't get the original user_k back. Good news is that we don't have to do it. What we need to is calculate a user2_k so, that reciprocal(user2_k) == reciprocal(user_k) == kernel_k i.e. if it's re-loaded back the compiled again value will be exactly the same as it was. That said, the user2_k can be calculated like this user2_k = reciprocal(kernel_k) with an exception, that if kernel_k == 0, then user2_k == 1. The optlen argument is treated like this -- when zero, kernel returns the amount of sock_fprog elements in filter, otherwise it should be large enough for the sock_fprog array. changes since v1: * Declared SO_GET_FILTER in all arch headers * Added decode of vlan-tag codes Signed-off-by: Pavel Emelyanov Signed-off-by: David S. Miller --- include/linux/filter.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/filter.h b/include/linux/filter.h index c9f0005c35e2..c45eabc135e1 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -45,6 +45,7 @@ extern void sk_unattached_filter_destroy(struct sk_filter *fp); extern int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk); extern int sk_detach_filter(struct sock *sk); extern int sk_chk_filter(struct sock_filter *filter, unsigned int flen); +extern int sk_get_filter(struct sock *sk, struct sock_filter __user *filter, unsigned len); #ifdef CONFIG_BPF_JIT extern void bpf_jit_compile(struct sk_filter *fp); -- cgit v1.2.3 From 65f8f9a1c1db831e5159e3e3e50912d1f214cd0c Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Wed, 31 Oct 2012 06:27:25 +0000 Subject: time: remove the timecompare code. This patch removes the timecompare code from the kernel. The top five reasons to do this are: 1. There are no more users of this code. 2. The original idea was a bit weak. 3. The original author has disappeared. 4. The code was not general purpose but tuned to a particular hardware, 5. There are better ways to accomplish clock synchronization. Signed-off-by: Richard Cochran Acked-by: John Stultz Tested-by: Bob Liu Signed-off-by: David S. Miller --- include/linux/timecompare.h | 125 -------------------------------------------- 1 file changed, 125 deletions(-) delete mode 100644 include/linux/timecompare.h (limited to 'include/linux') diff --git a/include/linux/timecompare.h b/include/linux/timecompare.h deleted file mode 100644 index 546e2234e4b3..000000000000 --- a/include/linux/timecompare.h +++ /dev/null @@ -1,125 +0,0 @@ -/* - * Utility code which helps transforming between two different time - * bases, called "source" and "target" time in this code. - * - * Source time has to be provided via the timecounter API while target - * time is accessed via a function callback whose prototype - * intentionally matches ktime_get() and ktime_get_real(). These - * interfaces where chosen like this so that the code serves its - * initial purpose without additional glue code. - * - * This purpose is synchronizing a hardware clock in a NIC with system - * time, in order to implement the Precision Time Protocol (PTP, - * IEEE1588) with more accurate hardware assisted time stamping. In - * that context only synchronization against system time (= - * ktime_get_real()) is currently needed. But this utility code might - * become useful in other situations, which is why it was written as - * general purpose utility code. - * - * The source timecounter is assumed to return monotonically - * increasing time (but this code does its best to compensate if that - * is not the case) whereas target time may jump. - * - * The target time corresponding to a source time is determined by - * reading target time, reading source time, reading target time - * again, then assuming that average target time corresponds to source - * time. In other words, the assumption is that reading the source - * time is slow and involves equal time for sending the request and - * receiving the reply, whereas reading target time is assumed to be - * fast. - * - * Copyright (C) 2009 Intel Corporation. - * Author: Patrick Ohly - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - */ -#ifndef _LINUX_TIMECOMPARE_H -#define _LINUX_TIMECOMPARE_H - -#include -#include - -/** - * struct timecompare - stores state and configuration for the two clocks - * - * Initialize to zero, then set source/target/num_samples. - * - * Transformation between source time and target time is done with: - * target_time = source_time + offset + - * (source_time - last_update) * skew / - * TIMECOMPARE_SKEW_RESOLUTION - * - * @source: used to get source time stamps via timecounter_read() - * @target: function returning target time (for example, ktime_get - * for monotonic time, or ktime_get_real for wall clock) - * @num_samples: number of times that source time and target time are to - * be compared when determining their offset - * @offset: (target time - source time) at the time of the last update - * @skew: average (target time - source time) / delta source time * - * TIMECOMPARE_SKEW_RESOLUTION - * @last_update: last source time stamp when time offset was measured - */ -struct timecompare { - struct timecounter *source; - ktime_t (*target)(void); - int num_samples; - - s64 offset; - s64 skew; - u64 last_update; -}; - -/** - * timecompare_transform - transform source time stamp into target time base - * @sync: context for time sync - * @source_tstamp: the result of timecounter_read() or - * timecounter_cyc2time() - */ -extern ktime_t timecompare_transform(struct timecompare *sync, - u64 source_tstamp); - -/** - * timecompare_offset - measure current (target time - source time) offset - * @sync: context for time sync - * @offset: average offset during sample period returned here - * @source_tstamp: average source time during sample period returned here - * - * Returns number of samples used. Might be zero (= no result) in the - * unlikely case that target time was monotonically decreasing for all - * samples (= broken). - */ -extern int timecompare_offset(struct timecompare *sync, - s64 *offset, - u64 *source_tstamp); - -extern void __timecompare_update(struct timecompare *sync, - u64 source_tstamp); - -/** - * timecompare_update - update offset and skew by measuring current offset - * @sync: context for time sync - * @source_tstamp: the result of timecounter_read() or - * timecounter_cyc2time(), pass zero to force update - * - * Updates are only done at most once per second. - */ -static inline void timecompare_update(struct timecompare *sync, - u64 source_tstamp) -{ - if (!source_tstamp || - (s64)(source_tstamp - sync->last_update) >= NSEC_PER_SEC) - __timecompare_update(sync, source_tstamp); -} - -#endif /* _LINUX_TIMECOMPARE_H */ -- cgit v1.2.3 From 6b60393e08f9263c7b129d54eeb261e8f970175c Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Mon, 29 Oct 2012 08:45:17 +0000 Subject: cpsw: add a DT field for the cpts offset Signed-off-by: Richard Cochran Signed-off-by: David S. Miller --- include/linux/platform_data/cpsw.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/cpsw.h b/include/linux/platform_data/cpsw.h index c4e23d029498..a052b1dca957 100644 --- a/include/linux/platform_data/cpsw.h +++ b/include/linux/platform_data/cpsw.h @@ -41,6 +41,7 @@ struct cpsw_platform_data { u32 host_port_num; /* The port number for the host port */ u32 hw_stats_reg_ofs; /* cpsw hardware statistics counters */ + u32 cpts_reg_ofs; /* cpts registers */ u32 bd_ram_ofs; /* embedded buffer descriptor RAM offset*/ u32 bd_ram_size; /*buffer descriptor ram size */ -- cgit v1.2.3 From 78ca0b287314ad6b7b06161b3ff9b13e8a8bcce0 Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Mon, 29 Oct 2012 08:45:18 +0000 Subject: cpsw: add a DT field for the active time stamping port Because time stamping on both external ports of the switch simultaneously is positively useless from the application's point of view, this patch provides a DT configuration method to choose the active port. Signed-off-by: Richard Cochran Signed-off-by: David S. Miller --- include/linux/platform_data/cpsw.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/cpsw.h b/include/linux/platform_data/cpsw.h index a052b1dca957..15a077eb0689 100644 --- a/include/linux/platform_data/cpsw.h +++ b/include/linux/platform_data/cpsw.h @@ -33,6 +33,7 @@ struct cpsw_platform_data { u32 slaves; /* number of slave cpgmac ports */ struct cpsw_slave_data *slave_data; + u32 cpts_active_slave; /* time stamping slave */ u32 ale_reg_ofs; /* address lookup engine reg offset */ u32 ale_entries; /* ale table size */ -- cgit v1.2.3 From 00ab94eeaf6c1ad38ad7368c5148fed31403c8a2 Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Mon, 29 Oct 2012 08:45:19 +0000 Subject: cpts: specify the input clock frequency via DT This patch adds a way to configure the CPTS input clock scaling factors via the device tree. Signed-off-by: Richard Cochran Signed-off-by: David S. Miller --- include/linux/platform_data/cpsw.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/cpsw.h b/include/linux/platform_data/cpsw.h index 15a077eb0689..b5c16c3df458 100644 --- a/include/linux/platform_data/cpsw.h +++ b/include/linux/platform_data/cpsw.h @@ -34,6 +34,8 @@ struct cpsw_platform_data { u32 slaves; /* number of slave cpgmac ports */ struct cpsw_slave_data *slave_data; u32 cpts_active_slave; /* time stamping slave */ + u32 cpts_clock_mult; /* convert input clock ticks to nanoseconds */ + u32 cpts_clock_shift; /* convert input clock ticks to nanoseconds */ u32 ale_reg_ofs; /* address lookup engine reg offset */ u32 ale_entries; /* ale table size */ -- cgit v1.2.3 From 50ecf2c3afead23a05227ab004e4212eca08c207 Mon Sep 17 00:00:00 2001 From: Yoshihiro YUNOMAE Date: Thu, 11 Oct 2012 16:27:54 -0700 Subject: ring-buffer: Change unsigned long type of ring_buffer_oldest_event_ts() to u64 ring_buffer_oldest_event_ts() should return a value of u64 type, because ring_buffer_per_cpu->buffer_page->buffer_data_page->time_stamp is u64 type. Link: http://lkml.kernel.org/r/1349998076-15495-5-git-send-email-dhsharp@google.com Cc: Frederic Weisbecker Cc: Vaibhav Nagarnaik Signed-off-by: Yoshihiro YUNOMAE Signed-off-by: David Sharp Signed-off-by: Steven Rostedt --- include/linux/ring_buffer.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h index 2007375cfe77..519777e3fa01 100644 --- a/include/linux/ring_buffer.h +++ b/include/linux/ring_buffer.h @@ -159,7 +159,7 @@ int ring_buffer_record_is_on(struct ring_buffer *buffer); void ring_buffer_record_disable_cpu(struct ring_buffer *buffer, int cpu); void ring_buffer_record_enable_cpu(struct ring_buffer *buffer, int cpu); -unsigned long ring_buffer_oldest_event_ts(struct ring_buffer *buffer, int cpu); +u64 ring_buffer_oldest_event_ts(struct ring_buffer *buffer, int cpu); unsigned long ring_buffer_bytes_cpu(struct ring_buffer *buffer, int cpu); unsigned long ring_buffer_entries(struct ring_buffer *buffer); unsigned long ring_buffer_overruns(struct ring_buffer *buffer); -- cgit v1.2.3 From 0d5c6e1c19bab82fad4837108c2902f557d62a04 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Thu, 1 Nov 2012 20:54:21 -0400 Subject: tracing: Use irq_work for wake ups and remove *_nowake_*() functions Have the ring buffer commit function use the irq_work infrastructure to wake up any waiters waiting on the ring buffer for new data. The irq_work was created for such a purpose, where doing the actual wake up at the time of adding data is too dangerous, as an event or function trace may be in the midst of the work queue locks and cause deadlocks. The irq_work will either delay the action to the next timer interrupt, or trigger an IPI to itself forcing an interrupt to do the work (in a safe location). With irq_work, all ring buffer commits can safely do wakeups, removing the need for the ring buffer commit "nowake" variants, which were used by events and function tracing. All commits can now safely use the normal commit, and the "nowake" variants can be removed. Cc: Peter Zijlstra Signed-off-by: Steven Rostedt --- include/linux/ftrace_event.h | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index 642928cf57b4..b80c8ddfbbdc 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h @@ -127,13 +127,13 @@ trace_current_buffer_lock_reserve(struct ring_buffer **current_buffer, void trace_current_buffer_unlock_commit(struct ring_buffer *buffer, struct ring_buffer_event *event, unsigned long flags, int pc); -void trace_nowake_buffer_unlock_commit(struct ring_buffer *buffer, - struct ring_buffer_event *event, - unsigned long flags, int pc); -void trace_nowake_buffer_unlock_commit_regs(struct ring_buffer *buffer, - struct ring_buffer_event *event, - unsigned long flags, int pc, - struct pt_regs *regs); +void trace_buffer_unlock_commit(struct ring_buffer *buffer, + struct ring_buffer_event *event, + unsigned long flags, int pc); +void trace_buffer_unlock_commit_regs(struct ring_buffer *buffer, + struct ring_buffer_event *event, + unsigned long flags, int pc, + struct pt_regs *regs); void trace_current_buffer_discard_commit(struct ring_buffer *buffer, struct ring_buffer_event *event); -- cgit v1.2.3 From 873e698067cfa21420576632e1c3387c0f90ce4a Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Wed, 31 Oct 2012 09:54:56 -0700 Subject: ARM: OMAP: Remove NEED_MACH_GPIO_H Omap no longer needs this option, mach/gpio.h is empty. Also remove mach/irqs.h from gpio-omap.h and include it directly from the related omap1 gpio init files. Otherwise omap2+ build fails for MULTI_PLATFORM. Cc: Peter Ujfalusi Cc: Jarkko Nikula Cc: Liam Girdwood Cc: alsa-devel@alsa-project.org Acked-by: Mark Brown Signed-off-by: Tony Lindgren --- include/linux/platform_data/gpio-omap.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/gpio-omap.h b/include/linux/platform_data/gpio-omap.h index e8741c2678d5..5d50b25a73d7 100644 --- a/include/linux/platform_data/gpio-omap.h +++ b/include/linux/platform_data/gpio-omap.h @@ -26,7 +26,6 @@ #include #include -#include #define OMAP1_MPUIO_BASE 0xfffb5000 -- cgit v1.2.3 From e19d6763cc300fcb706bd291b24ac06be71e1ce6 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Thu, 1 Nov 2012 09:16:22 +0000 Subject: skb: report completion status for zero copy skbs Even if skb is marked for zero copy, net core might still decide to copy it later which is somewhat slower than a copy in user context: besides copying the data we need to pin/unpin the pages. Add a parameter reporting such cases through zero copy callback: if this happens a lot, device can take this into account and switch to copying in user context. This patch updates all users but ignores the passed value for now: it will be used by follow-up patches. Signed-off-by: Michael S. Tsirkin Signed-off-by: David S. Miller --- include/linux/skbuff.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index a2a0bdb95a8f..e5eae5bc1d4d 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -235,11 +235,13 @@ enum { /* * The callback notifies userspace to release buffers when skb DMA is done in * lower device, the skb last reference should be 0 when calling this. + * The zerocopy_success argument is true if zero copy transmit occurred, + * false on data copy or out of memory error caused by data copy attempt. * The ctx field is used to track device context. * The desc field is used to track userspace buffer index. */ struct ubuf_info { - void (*callback)(struct ubuf_info *); + void (*callback)(struct ubuf_info *, bool zerocopy_success); void *ctx; unsigned long desc; }; -- cgit v1.2.3 From 25121173f7b1e4ac3fc692df6e7b8c52ec36abba Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Thu, 1 Nov 2012 09:16:28 +0000 Subject: skb: api to report errors for zero copy skbs Orphaning frags for zero copy skbs needs to allocate data in atomic context so is has a chance to fail. If it does we currently discard the skb which is safe, but we don't report anything to the caller, so it can not recover by e.g. disabling zero copy. Add an API to free skb reporting such errors: this is used by tun in case orphaning frags fails. Signed-off-by: Michael S. Tsirkin Signed-off-by: David S. Miller --- include/linux/skbuff.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index e5eae5bc1d4d..f2af494330ab 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -568,6 +568,7 @@ static inline struct rtable *skb_rtable(const struct sk_buff *skb) } extern void kfree_skb(struct sk_buff *skb); +extern void skb_tx_error(struct sk_buff *skb); extern void consume_skb(struct sk_buff *skb); extern void __kfree_skb(struct sk_buff *skb); extern struct kmem_cache *skbuff_head_cache; -- cgit v1.2.3 From 46acc460c07b5c74287560a00b6cbc6111136ab6 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Thu, 1 Nov 2012 09:11:11 +0000 Subject: eth: Make is_link_local() consistent with other address tests Function name should include '_ether_addr'. Return type should be bool. Parameter name should be 'addr' not 'dest' (also matching kernel-doc). Signed-off-by: Ben Hutchings Acked-by: John Fastabend Signed-off-by: David S. Miller --- include/linux/etherdevice.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h index 45ded4be7b43..7cf2516ec74c 100644 --- a/include/linux/etherdevice.h +++ b/include/linux/etherdevice.h @@ -55,15 +55,15 @@ extern struct net_device *alloc_etherdev_mqs(int sizeof_priv, unsigned int txqs, static const u8 br_reserved_address[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 }; /** - * is_link_local - Determine if given Eth addr is a link local mcast address. + * is_link_local_ether_addr - Determine if given Ethernet address is link-local * @addr: Pointer to a six-byte array containing the Ethernet address * * Return true if address is link local reserved addr (01:80:c2:00:00:0X) per * IEEE 802.1Q 8.6.3 Frame filtering. */ -static inline int is_link_local(const unsigned char *dest) +static inline bool is_link_local_ether_addr(const u8 *addr) { - __be16 *a = (__be16 *)dest; + __be16 *a = (__be16 *)addr; static const __be16 *b = (const __be16 *)br_reserved_address; static const __be16 m = cpu_to_be16(0xfff0); -- cgit v1.2.3 From 2bc80059fe19229e68a306ce12f5e61e80b92c5c Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Thu, 1 Nov 2012 09:12:02 +0000 Subject: eth: Rename and properly align br_reserved_address array Since this array is no longer part of the bridge driver, it should have an 'eth' prefix not 'br'. We also assume that either it's 16-bit-aligned or the architecture has efficient unaligned access. Ensure the first of these is true by explicitly aligning it. Signed-off-by: Ben Hutchings Acked-by: John Fastabend Signed-off-by: David S. Miller --- include/linux/etherdevice.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h index 7cf2516ec74c..243eea1e33d8 100644 --- a/include/linux/etherdevice.h +++ b/include/linux/etherdevice.h @@ -52,7 +52,8 @@ extern struct net_device *alloc_etherdev_mqs(int sizeof_priv, unsigned int txqs, #define alloc_etherdev_mq(sizeof_priv, count) alloc_etherdev_mqs(sizeof_priv, count, count) /* Reserved Ethernet Addresses per IEEE 802.1Q */ -static const u8 br_reserved_address[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 }; +static const u8 eth_reserved_addr_base[ETH_ALEN] __aligned(2) = +{ 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 }; /** * is_link_local_ether_addr - Determine if given Ethernet address is link-local @@ -64,7 +65,7 @@ static const u8 br_reserved_address[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, static inline bool is_link_local_ether_addr(const u8 *addr) { __be16 *a = (__be16 *)addr; - static const __be16 *b = (const __be16 *)br_reserved_address; + static const __be16 *b = (const __be16 *)eth_reserved_addr_base; static const __be16 m = cpu_to_be16(0xfff0); return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | ((a[2] ^ b[2]) & m)) == 0; -- cgit v1.2.3 From 19f5ee2716373519fda2129e9333f4c3847aa742 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Sun, 28 Oct 2012 18:14:14 +0100 Subject: uprobes: Kill arch_uprobe_enable/disable_step() hooks Kill arch_uprobe_enable/disable_step() hooks, they do nothing and nobody needs them. Signed-off-by: Oleg Nesterov Acked-by: Srikar Dronamraju --- include/linux/uprobes.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h index 24594571c5a3..2615c4d7788d 100644 --- a/include/linux/uprobes.h +++ b/include/linux/uprobes.h @@ -101,8 +101,6 @@ extern void uprobe_dup_mmap(struct mm_struct *oldmm, struct mm_struct *newmm); extern void uprobe_free_utask(struct task_struct *t); extern void uprobe_copy_process(struct task_struct *t); extern unsigned long __weak uprobe_get_swbp_addr(struct pt_regs *regs); -extern void __weak arch_uprobe_enable_step(struct arch_uprobe *arch); -extern void __weak arch_uprobe_disable_step(struct arch_uprobe *arch); extern int uprobe_post_sstep_notifier(struct pt_regs *regs); extern int uprobe_pre_sstep_notifier(struct pt_regs *regs); extern void uprobe_notify_resume(struct pt_regs *regs); -- cgit v1.2.3 From 398f382c0a5bd62f0f31871e844700e1b9fd1ad3 Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Sun, 28 Oct 2012 08:27:19 +0000 Subject: pktgen: clean up ktime_t helpers Some years ago, the ktime_t helper functions ktime_now() and ktime_lt() have been introduced. Instead of defining them inside pktgen.c, they should either use ktime_t library functions or, if not available, they should be defined in ktime.h, so that also others can benefit from them. ktime_compare() is introduced with a similar notion as in timespec_compare(). Signed-off-by: Daniel Borkmann Cc: Cong Wang Cc: Stephen Hemminger Cc: Thomas Gleixner Acked-by: Thomas Gleixner Signed-off-by: David S. Miller --- include/linux/ktime.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ktime.h b/include/linux/ktime.h index 06177ba10a16..e83512f63df5 100644 --- a/include/linux/ktime.h +++ b/include/linux/ktime.h @@ -282,6 +282,25 @@ static inline int ktime_equal(const ktime_t cmp1, const ktime_t cmp2) return cmp1.tv64 == cmp2.tv64; } +/** + * ktime_compare - Compares two ktime_t variables for less, greater or equal + * @cmp1: comparable1 + * @cmp2: comparable2 + * + * Returns ... + * cmp1 < cmp2: return <0 + * cmp1 == cmp2: return 0 + * cmp1 > cmp2: return >0 + */ +static inline int ktime_compare(const ktime_t cmp1, const ktime_t cmp2) +{ + if (cmp1.tv64 < cmp2.tv64) + return -1; + if (cmp1.tv64 > cmp2.tv64) + return 1; + return 0; +} + static inline s64 ktime_to_us(const ktime_t kt) { struct timeval tv = ktime_to_timeval(kt); -- cgit v1.2.3 From 87f4d7c1d36f44b0822053b7e5dedc31fdd0ab99 Mon Sep 17 00:00:00 2001 From: Jacob Keller Date: Thu, 1 Nov 2012 12:30:16 +0000 Subject: ptp: update adjfreq callback description This patch updates the adjfreq callback description to include a note that the delta in ppb is always relative to the base frequency, and not to the current frequency of the hardware clock. Signed-off-by: Jacob Keller CC: stable@vger.kernel.org [v3.5+] CC: Richard Cochran CC: John Stultz Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- include/linux/ptp_clock_kernel.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ptp_clock_kernel.h b/include/linux/ptp_clock_kernel.h index f2dc6d8fc680..38a993508327 100644 --- a/include/linux/ptp_clock_kernel.h +++ b/include/linux/ptp_clock_kernel.h @@ -54,7 +54,8 @@ struct ptp_clock_request { * clock operations * * @adjfreq: Adjusts the frequency of the hardware clock. - * parameter delta: Desired period change in parts per billion. + * parameter delta: Desired frequency offset from nominal frequency + * in parts per billion * * @adjtime: Shifts the time of the hardware clock. * parameter delta: Desired change in nanoseconds. -- cgit v1.2.3 From cdfcc572be0a8b423cecfb4ab5fd735fafe9c54a Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Tue, 30 Oct 2012 14:31:38 -0600 Subject: PCI: Add pci_stop_and_remove_root_bus() It supports both PCI root bus and PCI bus under PCI bridge. Signed-off-by: Yinghai Lu Signed-off-by: Bjorn Helgaas --- include/linux/pci.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index f543eb3b1c0c..786094254d57 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -712,6 +712,8 @@ extern struct pci_dev *pci_dev_get(struct pci_dev *dev); extern void pci_dev_put(struct pci_dev *dev); extern void pci_remove_bus(struct pci_bus *b); extern void pci_stop_and_remove_bus_device(struct pci_dev *dev); +void pci_stop_root_bus(struct pci_bus *bus); +void pci_remove_root_bus(struct pci_bus *bus); void pci_setup_cardbus(struct pci_bus *bus); extern void pci_sort_breadthfirst(void); #define dev_is_pci(d) ((d)->bus == &pci_bus_type) -- cgit v1.2.3 From 3b98c0c2093d1f92e5b7394ae0b13d142e7ef880 Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Mon, 7 Mar 2011 12:49:34 +0100 Subject: drbd: switch configuration interface from connector to genetlink Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 35 +---------------------------------- include/linux/genl_magic_func.h | 2 +- 2 files changed, 2 insertions(+), 35 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index e192167e6145..d28fdd8fcd49 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -51,7 +51,6 @@ #endif - extern const char *drbd_buildtag(void); #define REL_VERSION "8.3.11" #define API_VERSION 88 @@ -159,6 +158,7 @@ enum drbd_ret_code { ERR_CONN_IN_USE = 159, ERR_MINOR_CONFIGURED = 160, ERR_MINOR_EXISTS = 161, + ERR_INVALID_REQUEST = 162, /* insert new ones above this line */ AFTER_LAST_ERR_CODE @@ -349,37 +349,4 @@ enum drbd_timeout_flag { #define DRBD_MD_INDEX_FLEX_EXT -2 #define DRBD_MD_INDEX_FLEX_INT -3 -/* Start of the new netlink/connector stuff */ - -enum drbd_ncr_flags { - DRBD_NL_CREATE_DEVICE = 0x01, - DRBD_NL_SET_DEFAULTS = 0x02, -}; -#define DRBD_NL_OBJ_NAME_LEN 32 - - -/* For searching a vacant cn_idx value */ -#define CN_IDX_STEP 6977 - -struct drbd_nl_cfg_req { - int packet_type; - union { - struct { - unsigned int drbd_minor; - enum drbd_ncr_flags flags; - }; - struct { - char obj_name[DRBD_NL_OBJ_NAME_LEN]; - }; - }; - unsigned short tag_list[]; -}; - -struct drbd_nl_cfg_reply { - int packet_type; - unsigned int minor; - int ret_code; /* enum ret_code or set_st_err_t */ - unsigned short tag_list[]; /* only used with get_* calls */ -}; - #endif diff --git a/include/linux/genl_magic_func.h b/include/linux/genl_magic_func.h index 8a86f659d363..c8c67239f616 100644 --- a/include/linux/genl_magic_func.h +++ b/include/linux/genl_magic_func.h @@ -95,7 +95,7 @@ static struct nla_policy s_name ## _nl_policy[] __read_mostly = \ #endif #endif -#if 1 +#ifdef GENL_MAGIC_DEBUG static void dprint_field(const char *dir, int nla_type, const char *name, void *valp) { -- cgit v1.2.3 From 73d901b74f1070c8a664349b564ba6f8bc8ab283 Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Mon, 7 Mar 2011 10:38:56 +0100 Subject: drbd: remove now unused connector related files Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_nl.h | 172 ----------------------------------------- include/linux/drbd_tag_magic.h | 84 -------------------- 2 files changed, 256 deletions(-) delete mode 100644 include/linux/drbd_nl.h delete mode 100644 include/linux/drbd_tag_magic.h (limited to 'include/linux') diff --git a/include/linux/drbd_nl.h b/include/linux/drbd_nl.h deleted file mode 100644 index 1216c7a432c5..000000000000 --- a/include/linux/drbd_nl.h +++ /dev/null @@ -1,172 +0,0 @@ -/* - PAKET( name, - TYPE ( pn, pr, member ) - ... - ) - - You may never reissue one of the pn arguments -*/ - -#if !defined(NL_PACKET) || !defined(NL_STRING) || !defined(NL_INTEGER) || !defined(NL_BIT) || !defined(NL_INT64) -#error "The macros NL_PACKET, NL_STRING, NL_INTEGER, NL_INT64 and NL_BIT needs to be defined" -#endif - -NL_PACKET(primary, 1, - NL_BIT( 1, T_MAY_IGNORE, primary_force) -) - -NL_PACKET(secondary, 2, ) - -NL_PACKET(disk_conf, 3, - NL_INT64( 2, T_MAY_IGNORE, disk_size) - NL_STRING( 3, T_MANDATORY, backing_dev, 128) - NL_STRING( 4, T_MANDATORY, meta_dev, 128) - NL_INTEGER( 5, T_MANDATORY, meta_dev_idx) - NL_INTEGER( 6, T_MAY_IGNORE, on_io_error) - NL_INTEGER( 7, T_MAY_IGNORE, fencing) - NL_BIT( 37, T_MAY_IGNORE, use_bmbv) - NL_BIT( 53, T_MAY_IGNORE, no_disk_flush) - NL_BIT( 54, T_MAY_IGNORE, no_md_flush) - /* 55 max_bio_size was available in 8.2.6rc2 */ - NL_INTEGER( 56, T_MAY_IGNORE, max_bio_bvecs) - NL_BIT( 57, T_MAY_IGNORE, no_disk_barrier) - NL_BIT( 58, T_MAY_IGNORE, no_disk_drain) -) - -NL_PACKET(detach, 4, ) - -NL_PACKET(net_conf, 5, - NL_STRING( 8, T_MANDATORY, my_addr, 128) - NL_STRING( 9, T_MANDATORY, peer_addr, 128) - NL_STRING( 10, T_MAY_IGNORE, shared_secret, SHARED_SECRET_MAX) - NL_STRING( 11, T_MAY_IGNORE, cram_hmac_alg, SHARED_SECRET_MAX) - NL_STRING( 44, T_MAY_IGNORE, integrity_alg, SHARED_SECRET_MAX) - NL_INTEGER( 14, T_MAY_IGNORE, timeout) - NL_INTEGER( 15, T_MANDATORY, wire_protocol) - NL_INTEGER( 16, T_MAY_IGNORE, try_connect_int) - NL_INTEGER( 17, T_MAY_IGNORE, ping_int) - NL_INTEGER( 18, T_MAY_IGNORE, max_epoch_size) - NL_INTEGER( 19, T_MAY_IGNORE, max_buffers) - NL_INTEGER( 20, T_MAY_IGNORE, unplug_watermark) - NL_INTEGER( 21, T_MAY_IGNORE, sndbuf_size) - NL_INTEGER( 22, T_MAY_IGNORE, ko_count) - NL_INTEGER( 24, T_MAY_IGNORE, after_sb_0p) - NL_INTEGER( 25, T_MAY_IGNORE, after_sb_1p) - NL_INTEGER( 26, T_MAY_IGNORE, after_sb_2p) - NL_INTEGER( 39, T_MAY_IGNORE, rr_conflict) - NL_INTEGER( 40, T_MAY_IGNORE, ping_timeo) - NL_INTEGER( 67, T_MAY_IGNORE, rcvbuf_size) - NL_INTEGER( 81, T_MAY_IGNORE, on_congestion) - NL_INTEGER( 82, T_MAY_IGNORE, cong_fill) - NL_INTEGER( 83, T_MAY_IGNORE, cong_extents) - /* 59 addr_family was available in GIT, never released */ - NL_BIT( 60, T_MANDATORY, mind_af) - NL_BIT( 27, T_MAY_IGNORE, want_lose) - NL_BIT( 28, T_MAY_IGNORE, two_primaries) - NL_BIT( 41, T_MAY_IGNORE, always_asbp) - NL_BIT( 61, T_MAY_IGNORE, no_cork) - NL_BIT( 62, T_MANDATORY, auto_sndbuf_size) - NL_BIT( 70, T_MANDATORY, dry_run) -) - -NL_PACKET(disconnect, 6, - NL_BIT( 84, T_MAY_IGNORE, force) -) - -NL_PACKET(resize, 7, - NL_INT64( 29, T_MAY_IGNORE, resize_size) - NL_BIT( 68, T_MAY_IGNORE, resize_force) - NL_BIT( 69, T_MANDATORY, no_resync) -) - -NL_PACKET(syncer_conf, 8, - NL_INTEGER( 30, T_MAY_IGNORE, rate) - NL_INTEGER( 31, T_MAY_IGNORE, after) - NL_INTEGER( 32, T_MAY_IGNORE, al_extents) -/* NL_INTEGER( 71, T_MAY_IGNORE, dp_volume) - * NL_INTEGER( 72, T_MAY_IGNORE, dp_interval) - * NL_INTEGER( 73, T_MAY_IGNORE, throttle_th) - * NL_INTEGER( 74, T_MAY_IGNORE, hold_off_th) - * feature will be reimplemented differently with 8.3.9 */ - NL_STRING( 52, T_MAY_IGNORE, verify_alg, SHARED_SECRET_MAX) - NL_STRING( 51, T_MAY_IGNORE, cpu_mask, 32) - NL_STRING( 64, T_MAY_IGNORE, csums_alg, SHARED_SECRET_MAX) - NL_BIT( 65, T_MAY_IGNORE, use_rle) - NL_INTEGER( 75, T_MAY_IGNORE, on_no_data) - NL_INTEGER( 76, T_MAY_IGNORE, c_plan_ahead) - NL_INTEGER( 77, T_MAY_IGNORE, c_delay_target) - NL_INTEGER( 78, T_MAY_IGNORE, c_fill_target) - NL_INTEGER( 79, T_MAY_IGNORE, c_max_rate) - NL_INTEGER( 80, T_MAY_IGNORE, c_min_rate) -) - -NL_PACKET(invalidate, 9, ) -NL_PACKET(invalidate_peer, 10, ) -NL_PACKET(pause_sync, 11, ) -NL_PACKET(resume_sync, 12, ) -NL_PACKET(suspend_io, 13, ) -NL_PACKET(resume_io, 14, ) -NL_PACKET(outdate, 15, ) -NL_PACKET(get_config, 16, ) -NL_PACKET(get_state, 17, - NL_INTEGER( 33, T_MAY_IGNORE, state_i) -) - -NL_PACKET(get_uuids, 18, - NL_STRING( 34, T_MAY_IGNORE, uuids, (UI_SIZE*sizeof(__u64))) - NL_INTEGER( 35, T_MAY_IGNORE, uuids_flags) -) - -NL_PACKET(get_timeout_flag, 19, - NL_BIT( 36, T_MAY_IGNORE, use_degraded) -) - -NL_PACKET(call_helper, 20, - NL_STRING( 38, T_MAY_IGNORE, helper, 32) -) - -/* Tag nr 42 already allocated in drbd-8.1 development. */ - -NL_PACKET(sync_progress, 23, - NL_INTEGER( 43, T_MAY_IGNORE, sync_progress) -) - -NL_PACKET(dump_ee, 24, - NL_STRING( 45, T_MAY_IGNORE, dump_ee_reason, 32) - NL_STRING( 46, T_MAY_IGNORE, seen_digest, SHARED_SECRET_MAX) - NL_STRING( 47, T_MAY_IGNORE, calc_digest, SHARED_SECRET_MAX) - NL_INT64( 48, T_MAY_IGNORE, ee_sector) - NL_INT64( 49, T_MAY_IGNORE, ee_block_id) - NL_STRING( 50, T_MAY_IGNORE, ee_data, 32 << 10) -) - -NL_PACKET(start_ov, 25, - NL_INT64( 66, T_MAY_IGNORE, start_sector) -) - -NL_PACKET(new_c_uuid, 26, - NL_BIT( 63, T_MANDATORY, clear_bm) -) - -#ifdef NL_RESPONSE -NL_RESPONSE(return_code_only, 27) -#endif - -NL_PACKET(new_connection, 28, /* CHT_CTOR */ - NL_STRING( 85, T_MANDATORY, name, DRBD_NL_OBJ_NAME_LEN) -) - -NL_PACKET(new_minor, 29, /* CHT_CONN */ - NL_INTEGER( 86, T_MANDATORY, minor) - NL_INTEGER( 87, T_MANDATORY, vol_nr) -) - -NL_PACKET(del_minor, 30, ) /* CHT_MINOR */ -NL_PACKET(del_connection, 31, ) /* CHT_CONN */ - -#undef NL_PACKET -#undef NL_INTEGER -#undef NL_INT64 -#undef NL_BIT -#undef NL_STRING -#undef NL_RESPONSE diff --git a/include/linux/drbd_tag_magic.h b/include/linux/drbd_tag_magic.h deleted file mode 100644 index 069543190516..000000000000 --- a/include/linux/drbd_tag_magic.h +++ /dev/null @@ -1,84 +0,0 @@ -#ifndef DRBD_TAG_MAGIC_H -#define DRBD_TAG_MAGIC_H - -#define TT_END 0 -#define TT_REMOVED 0xE000 - -/* declare packet_type enums */ -enum packet_types { -#define NL_PACKET(name, number, fields) P_ ## name = number, -#define NL_RESPONSE(name, number) P_ ## name = number, -#define NL_INTEGER(pn, pr, member) -#define NL_INT64(pn, pr, member) -#define NL_BIT(pn, pr, member) -#define NL_STRING(pn, pr, member, len) -#include "drbd_nl.h" - P_nl_after_last_packet, -}; - -/* These struct are used to deduce the size of the tag lists: */ -#define NL_PACKET(name, number, fields) \ - struct name ## _tag_len_struct { fields }; -#define NL_INTEGER(pn, pr, member) \ - int member; int tag_and_len ## member; -#define NL_INT64(pn, pr, member) \ - __u64 member; int tag_and_len ## member; -#define NL_BIT(pn, pr, member) \ - unsigned char member:1; int tag_and_len ## member; -#define NL_STRING(pn, pr, member, len) \ - unsigned char member[len]; int member ## _len; \ - int tag_and_len ## member; -#include "linux/drbd_nl.h" - -/* declare tag-list-sizes */ -static const int tag_list_sizes[] = { -#define NL_PACKET(name, number, fields) 2 fields , -#define NL_INTEGER(pn, pr, member) + 4 + 4 -#define NL_INT64(pn, pr, member) + 4 + 8 -#define NL_BIT(pn, pr, member) + 4 + 1 -#define NL_STRING(pn, pr, member, len) + 4 + (len) -#include "drbd_nl.h" -}; - -/* The two highest bits are used for the tag type */ -#define TT_MASK 0xC000 -#define TT_INTEGER 0x0000 -#define TT_INT64 0x4000 -#define TT_BIT 0x8000 -#define TT_STRING 0xC000 -/* The next bit indicates if processing of the tag is mandatory */ -#define T_MANDATORY 0x2000 -#define T_MAY_IGNORE 0x0000 -#define TN_MASK 0x1fff -/* The remaining 13 bits are used to enumerate the tags */ - -#define tag_type(T) ((T) & TT_MASK) -#define tag_number(T) ((T) & TN_MASK) - -/* declare tag enums */ -#define NL_PACKET(name, number, fields) fields -enum drbd_tags { -#define NL_INTEGER(pn, pr, member) T_ ## member = pn | TT_INTEGER | pr , -#define NL_INT64(pn, pr, member) T_ ## member = pn | TT_INT64 | pr , -#define NL_BIT(pn, pr, member) T_ ## member = pn | TT_BIT | pr , -#define NL_STRING(pn, pr, member, len) T_ ## member = pn | TT_STRING | pr , -#include "drbd_nl.h" -}; - -struct tag { - const char *name; - int type_n_flags; - int max_len; -}; - -/* declare tag names */ -#define NL_PACKET(name, number, fields) fields -static const struct tag tag_descriptions[] = { -#define NL_INTEGER(pn, pr, member) [ pn ] = { #member, TT_INTEGER | pr, sizeof(int) }, -#define NL_INT64(pn, pr, member) [ pn ] = { #member, TT_INT64 | pr, sizeof(__u64) }, -#define NL_BIT(pn, pr, member) [ pn ] = { #member, TT_BIT | pr, sizeof(int) }, -#define NL_STRING(pn, pr, member, len) [ pn ] = { #member, TT_STRING | pr, (len) }, -#include "drbd_nl.h" -}; - -#endif -- cgit v1.2.3 From 85f75dd7630436b0aa46a6393099c0f23121f5f0 Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Tue, 15 Mar 2011 16:26:37 +0100 Subject: drbd: introduce in-kernel "down" command This greatly simplifies deconfiguration of whole resources. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 84e16848f7a1..a07d69279b1a 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -347,3 +347,5 @@ GENL_op(DRBD_ADM_OUTDATE, 25, GENL_doit(drbd_adm_outdate), GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) GENL_op(DRBD_ADM_GET_TIMEOUT_TYPE, 26, GENL_doit(drbd_adm_get_timeout_type), GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) +GENL_op(DRBD_ADM_DOWN, 27, GENL_doit(drbd_adm_down), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) -- cgit v1.2.3 From 047e95e259e81d7b97eca10cda0aa93082531ac1 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Wed, 16 Mar 2011 14:43:36 +0100 Subject: drbd: Allow volumes to become primary only on one side Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index d28fdd8fcd49..9cdb888607ae 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -300,7 +300,8 @@ enum drbd_state_rv { SS_NOT_SUPPORTED = -17, /* drbd-8.2 only */ SS_IN_TRANSIENT_STATE = -18, /* Retry after the next state change */ SS_CONCURRENT_ST_CHG = -19, /* Concurrent cluster side state change! */ - SS_AFTER_LAST_ERROR = -20, /* Keep this at bottom */ + SS_O_VOL_PEER_PRI = -20, + SS_AFTER_LAST_ERROR = -21, /* Keep this at bottom */ }; /* from drbd_strings.c */ -- cgit v1.2.3 From 2cbacafd7af0f1cc7a433668c662a91ba6aabc1b Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 17 Apr 2012 16:34:13 +0100 Subject: SERIAL: core: add hardware assisted s/w flow control support Ports which are capable of handling s/w flow control in hardware to know when the s/w flow control termios settings are changed. Add a flag to allow the low level serial drivers to indicate that they support this, and these changes should be propagated to them. Acked-by: Alan Cox Signed-off-by: Russell King --- include/linux/serial_core.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 3c430228d232..00051388de3c 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -163,6 +163,8 @@ struct uart_port { #define UPF_BUGGY_UART ((__force upf_t) (1 << 14)) #define UPF_NO_TXEN_TEST ((__force upf_t) (1 << 15)) #define UPF_MAGIC_MULTIPLIER ((__force upf_t) (1 << 16)) +/* Port has hardware-assisted s/w flow control */ +#define UPF_SOFT_FLOW ((__force upf_t) (1 << 22)) #define UPF_CONS_FLOW ((__force upf_t) (1 << 23)) #define UPF_SHARE_IRQ ((__force upf_t) (1 << 24)) #define UPF_EXAR_EFR ((__force upf_t) (1 << 25)) -- cgit v1.2.3 From dba05832cbe4f305dfd998fb26d7c685d91fbbd8 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 17 Apr 2012 16:41:10 +0100 Subject: SERIAL: core: add hardware assisted h/w flow control support Ports which are handling h/w flow control in hardware must not have their RTS state altered depending on the tty's hardware-stopped state. Avoid this additional logic when setting the termios state. Acked-by: Alan Cox Signed-off-by: Russell King --- include/linux/serial_core.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 00051388de3c..e2cda5d04e48 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -163,6 +163,8 @@ struct uart_port { #define UPF_BUGGY_UART ((__force upf_t) (1 << 14)) #define UPF_NO_TXEN_TEST ((__force upf_t) (1 << 15)) #define UPF_MAGIC_MULTIPLIER ((__force upf_t) (1 << 16)) +/* Port has hardware-assisted h/w flow control (iow, auto-RTS *not* auto-CTS) */ +#define UPF_HARD_FLOW ((__force upf_t) (1 << 21)) /* Port has hardware-assisted s/w flow control */ #define UPF_SOFT_FLOW ((__force upf_t) (1 << 22)) #define UPF_CONS_FLOW ((__force upf_t) (1 << 23)) -- cgit v1.2.3 From 9aba8d5b011193c8e01d565c5b585df5b94f1db2 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 17 Apr 2012 17:23:14 +0100 Subject: SERIAL: core: add throttle/unthrottle callbacks for hardware assisted flow control Add two callbacks for hardware assisted flow control; we need to know when the tty layers want us to stop and restart due to their buffer levels. Call a driver specific throttle/unthrottle function if and only if the driver indicates that it is using an enabled hardware assisted flow control method, otherwise fall back to the non-hardware assisted methods. Acked-by: Alan Cox Signed-off-by: Russell King --- include/linux/serial_core.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index e2cda5d04e48..c6690a2a27fb 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -46,6 +46,8 @@ struct uart_ops { unsigned int (*get_mctrl)(struct uart_port *); void (*stop_tx)(struct uart_port *); void (*start_tx)(struct uart_port *); + void (*throttle)(struct uart_port *); + void (*unthrottle)(struct uart_port *); void (*send_xchar)(struct uart_port *, char ch); void (*stop_rx)(struct uart_port *); void (*enable_ms)(struct uart_port *); -- cgit v1.2.3 From 2389d5014342e9535aad212d0c68d439aaf534ba Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 31 Oct 2012 22:04:31 +0100 Subject: ARM: plat-versatile: move FPGA irq driver to drivers/irqchip This moves the Versatile FPGA interrupt controller driver, used in the Integrator/AP, Integrator/CP and some Versatile boards, out of arch/arm/plat-versatile and down to drivers/irqchip where we have consensus that such drivers belong. The header file is consequently moved to . Signed-off-by: Linus Walleij --- include/linux/irqchip/versatile-fpga.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 include/linux/irqchip/versatile-fpga.h (limited to 'include/linux') diff --git a/include/linux/irqchip/versatile-fpga.h b/include/linux/irqchip/versatile-fpga.h new file mode 100644 index 000000000000..1fac9651d3ca --- /dev/null +++ b/include/linux/irqchip/versatile-fpga.h @@ -0,0 +1,13 @@ +#ifndef PLAT_FPGA_IRQ_H +#define PLAT_FPGA_IRQ_H + +struct device_node; +struct pt_regs; + +void fpga_handle_irq(struct pt_regs *regs); +void fpga_irq_init(void __iomem *, const char *, int, int, u32, + struct device_node *node); +int fpga_irq_of_init(struct device_node *node, + struct device_node *parent); + +#endif -- cgit v1.2.3 From 23064088d6aea049746755e9851760620921a80b Mon Sep 17 00:00:00 2001 From: Durgadoss R Date: Tue, 18 Sep 2012 11:04:52 +0530 Subject: Thermal: Refactor thermal.h file This patch rearranges the code in thermal.h file, in the following order, so that it is easy to read/maintain. 1. All #defines 2. All enums 3. All fops structures 4. All device structures 5. All function declarations Signed-off-by: Durgadoss R Signed-off-by: Zhang Rui --- include/linux/thermal.h | 78 +++++++++++++++++++++++++++---------------------- 1 file changed, 43 insertions(+), 35 deletions(-) (limited to 'include/linux') diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 91b34812cd84..8611e3eba60c 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -29,6 +29,23 @@ #include #include +#define THERMAL_TRIPS_NONE -1 +#define THERMAL_MAX_TRIPS 12 +#define THERMAL_NAME_LENGTH 20 + +/* No upper/lower limit requirement */ +#define THERMAL_NO_LIMIT -1UL + +/* Unit conversion macros */ +#define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \ + ((long)t-2732+5)/10 : ((long)t-2732-5)/10) +#define CELSIUS_TO_KELVIN(t) ((t)*10+2732) + +/* Adding event notification support elements */ +#define THERMAL_GENL_FAMILY_NAME "thermal_event" +#define THERMAL_GENL_VERSION 0x01 +#define THERMAL_GENL_MCAST_GROUP_NAME "thermal_mc_group" + struct thermal_zone_device; struct thermal_cooling_device; @@ -50,6 +67,30 @@ enum thermal_trend { THERMAL_TREND_DROPPING, /* temperature is dropping */ }; +/* Events supported by Thermal Netlink */ +enum events { + THERMAL_AUX0, + THERMAL_AUX1, + THERMAL_CRITICAL, + THERMAL_DEV_FAULT, +}; + +/* attributes of thermal_genl_family */ +enum { + THERMAL_GENL_ATTR_UNSPEC, + THERMAL_GENL_ATTR_EVENT, + __THERMAL_GENL_ATTR_MAX, +}; +#define THERMAL_GENL_ATTR_MAX (__THERMAL_GENL_ATTR_MAX - 1) + +/* commands supported by the thermal_genl_family */ +enum { + THERMAL_GENL_CMD_UNSPEC, + THERMAL_GENL_CMD_EVENT, + __THERMAL_GENL_CMD_MAX, +}; +#define THERMAL_GENL_CMD_MAX (__THERMAL_GENL_CMD_MAX - 1) + struct thermal_zone_device_ops { int (*bind) (struct thermal_zone_device *, struct thermal_cooling_device *); @@ -83,11 +124,6 @@ struct thermal_cooling_device_ops { int (*set_cur_state) (struct thermal_cooling_device *, unsigned long); }; -#define THERMAL_NO_LIMIT -1UL /* no upper/lower limit requirement */ - -#define THERMAL_TRIPS_NONE -1 -#define THERMAL_MAX_TRIPS 12 -#define THERMAL_NAME_LENGTH 20 struct thermal_cooling_device { int id; char type[THERMAL_NAME_LENGTH]; @@ -100,10 +136,6 @@ struct thermal_cooling_device { struct list_head node; }; -#define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \ - ((long)t-2732+5)/10 : ((long)t-2732-5)/10) -#define CELSIUS_TO_KELVIN(t) ((t)*10+2732) - struct thermal_attr { struct device_attribute attr; char name[THERMAL_NAME_LENGTH]; @@ -131,38 +163,13 @@ struct thermal_zone_device { struct list_head node; struct delayed_work poll_queue; }; -/* Adding event notification support elements */ -#define THERMAL_GENL_FAMILY_NAME "thermal_event" -#define THERMAL_GENL_VERSION 0x01 -#define THERMAL_GENL_MCAST_GROUP_NAME "thermal_mc_group" - -enum events { - THERMAL_AUX0, - THERMAL_AUX1, - THERMAL_CRITICAL, - THERMAL_DEV_FAULT, -}; struct thermal_genl_event { u32 orig; enum events event; }; -/* attributes of thermal_genl_family */ -enum { - THERMAL_GENL_ATTR_UNSPEC, - THERMAL_GENL_ATTR_EVENT, - __THERMAL_GENL_ATTR_MAX, -}; -#define THERMAL_GENL_ATTR_MAX (__THERMAL_GENL_ATTR_MAX - 1) - -/* commands supported by the thermal_genl_family */ -enum { - THERMAL_GENL_CMD_UNSPEC, - THERMAL_GENL_CMD_EVENT, - __THERMAL_GENL_CMD_MAX, -}; -#define THERMAL_GENL_CMD_MAX (__THERMAL_GENL_CMD_MAX - 1) +/* Function declarations */ struct thermal_zone_device *thermal_zone_device_register(const char *, int, int, void *, const struct thermal_zone_device_ops *, int, int); void thermal_zone_device_unregister(struct thermal_zone_device *); @@ -173,6 +180,7 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int, int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int, struct thermal_cooling_device *); void thermal_zone_device_update(struct thermal_zone_device *); + struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, const struct thermal_cooling_device_ops *); void thermal_cooling_device_unregister(struct thermal_cooling_device *); -- cgit v1.2.3 From 9b4298a088907811a4fe5a5d7cd2454da60708c5 Mon Sep 17 00:00:00 2001 From: Durgadoss R Date: Tue, 18 Sep 2012 11:04:54 +0530 Subject: Thermal: Add get trend, get instance API's to thermal_sys This patch adds the following API's to thermal_sys.c, that can be used by other Thermal drivers. * get_tz_trend: obtain the trend of the given thermal zone * get_thermal_instance: obtain the instance corresponding to the given tz, cdev and the trip point. Signed-off-by: Durgadoss R Signed-off-by: Zhang Rui --- include/linux/thermal.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 8611e3eba60c..32af124d23cd 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -185,6 +185,10 @@ struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, const struct thermal_cooling_device_ops *); void thermal_cooling_device_unregister(struct thermal_cooling_device *); +int get_tz_trend(struct thermal_zone_device *, int); +struct thermal_instance *get_thermal_instance(struct thermal_zone_device *, + struct thermal_cooling_device *, int); + #ifdef CONFIG_NET extern int thermal_generate_netlink_event(u32 orig, enum events event); #else -- cgit v1.2.3 From ef87394791206019e4e4e04cb746865f2dc115ed Mon Sep 17 00:00:00 2001 From: Durgadoss R Date: Tue, 18 Sep 2012 11:04:55 +0530 Subject: Thermal: Add platform level information to thermal.h This patch adds platform level information to thermal.h by introducing two structures to hold: * bind parameters for a thermal zone, * zone level platform parameters Signed-off-by: Durgadoss R Signed-off-by: Zhang Rui --- include/linux/thermal.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) (limited to 'include/linux') diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 32af124d23cd..4caa32e400b4 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -157,6 +157,7 @@ struct thermal_zone_device { int passive; unsigned int forced_passive; const struct thermal_zone_device_ops *ops; + const struct thermal_zone_params *tzp; struct list_head thermal_instances; struct idr idr; struct mutex lock; /* protect thermal_instances list */ @@ -164,6 +165,34 @@ struct thermal_zone_device { struct delayed_work poll_queue; }; +/* Structure that holds binding parameters for a zone */ +struct thermal_bind_params { + struct thermal_cooling_device *cdev; + + /* + * This is a measure of 'how effectively these devices can + * cool 'this' thermal zone. The shall be determined by platform + * characterization. This is on a 'percentage' scale. + * See Documentation/thermal/sysfs-api.txt for more information. + */ + int weight; + + /* + * This is a bit mask that gives the binding relation between this + * thermal zone and cdev, for a particular trip point. + * See Documentation/thermal/sysfs-api.txt for more information. + */ + int trip_mask; + int (*match) (struct thermal_zone_device *tz, + struct thermal_cooling_device *cdev); +}; + +/* Structure to define Thermal Zone parameters */ +struct thermal_zone_params { + int num_tbps; /* Number of tbp entries */ + struct thermal_bind_params *tbp; +}; + struct thermal_genl_event { u32 orig; enum events event; -- cgit v1.2.3 From 50125a9b27dd09e9afdc1b8712ba0b3859886c68 Mon Sep 17 00:00:00 2001 From: Durgadoss R Date: Tue, 18 Sep 2012 11:04:56 +0530 Subject: Thermal: Pass zone parameters as argument to tzd_register This patch adds the thermal zone parameter as an argument to the tzd_register() function call; and updates other drivers using this function. Signed-off-by: Durgadoss R Signed-off-by: Zhang Rui --- include/linux/thermal.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 4caa32e400b4..58cb1c036a0e 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -200,7 +200,8 @@ struct thermal_genl_event { /* Function declarations */ struct thermal_zone_device *thermal_zone_device_register(const char *, int, int, - void *, const struct thermal_zone_device_ops *, int, int); + void *, const struct thermal_zone_device_ops *, + const struct thermal_zone_params *, int, int); void thermal_zone_device_unregister(struct thermal_zone_device *); int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int, -- cgit v1.2.3 From a4a15485fbba44d162d626141b9a7404e790f570 Mon Sep 17 00:00:00 2001 From: Durgadoss R Date: Tue, 18 Sep 2012 11:04:57 +0530 Subject: Thermal: Add thermal governor registration APIs This patch creates a structure to hold platform thermal governor information, and provides APIs for individual thermal governors to register/unregister with the Thermal framework. Signed-off-by: Durgadoss R Signed-off-by: Zhang Rui --- include/linux/thermal.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include/linux') diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 58cb1c036a0e..6182bd5f7504 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -46,6 +46,9 @@ #define THERMAL_GENL_VERSION 0x01 #define THERMAL_GENL_MCAST_GROUP_NAME "thermal_mc_group" +/* Default Thermal Governor: Does Linear Throttling */ +#define DEFAULT_THERMAL_GOVERNOR "step_wise" + struct thermal_zone_device; struct thermal_cooling_device; @@ -158,6 +161,7 @@ struct thermal_zone_device { unsigned int forced_passive; const struct thermal_zone_device_ops *ops; const struct thermal_zone_params *tzp; + struct thermal_governor *governor; struct list_head thermal_instances; struct idr idr; struct mutex lock; /* protect thermal_instances list */ @@ -165,6 +169,14 @@ struct thermal_zone_device { struct delayed_work poll_queue; }; +/* Structure that holds thermal governor information */ +struct thermal_governor { + char name[THERMAL_NAME_LENGTH]; + int (*throttle)(struct thermal_zone_device *tz, int trip); + struct list_head governor_list; + struct module *owner; +}; + /* Structure that holds binding parameters for a zone */ struct thermal_bind_params { struct thermal_cooling_device *cdev; @@ -189,6 +201,7 @@ struct thermal_bind_params { /* Structure to define Thermal Zone parameters */ struct thermal_zone_params { + char governor_name[THERMAL_NAME_LENGTH]; int num_tbps; /* Number of tbp entries */ struct thermal_bind_params *tbp; }; @@ -219,6 +232,9 @@ int get_tz_trend(struct thermal_zone_device *, int); struct thermal_instance *get_thermal_instance(struct thermal_zone_device *, struct thermal_cooling_device *, int); +int thermal_register_governor(struct thermal_governor *); +void thermal_unregister_governor(struct thermal_governor *); + #ifdef CONFIG_NET extern int thermal_generate_netlink_event(u32 orig, enum events event); #else -- cgit v1.2.3 From dc76548269ca2c44e5ddc29db5c36188bc4f2234 Mon Sep 17 00:00:00 2001 From: Durgadoss R Date: Tue, 18 Sep 2012 11:05:00 +0530 Subject: Thermal: Make thermal_cdev_update as a global function This patch makes the thermal_cdev_update function as a global one, so that other files can use it. This function serves as a single arbitrator to set the state of a cooling device. Signed-off-by: Durgadoss R Signed-off-by: Zhang Rui --- include/linux/thermal.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 6182bd5f7504..2bd915841818 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -231,6 +231,7 @@ void thermal_cooling_device_unregister(struct thermal_cooling_device *); int get_tz_trend(struct thermal_zone_device *, int); struct thermal_instance *get_thermal_instance(struct thermal_zone_device *, struct thermal_cooling_device *, int); +void thermal_cdev_update(struct thermal_cooling_device *); int thermal_register_governor(struct thermal_governor *); void thermal_unregister_governor(struct thermal_governor *); -- cgit v1.2.3 From f2b4caafd4aa64c9438b0a94af78b127228e6905 Mon Sep 17 00:00:00 2001 From: Durgadoss R Date: Tue, 18 Sep 2012 11:05:05 +0530 Subject: Thermal: Add a notification API This patch adds a notification API which the sensor drivers' can use to notify the framework. The framework then takes care of the throttling according to the configured policy. Signed-off-by: Durgadoss R Signed-off-by: Zhang Rui --- include/linux/thermal.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 2bd915841818..807f2146fe35 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -232,6 +232,7 @@ int get_tz_trend(struct thermal_zone_device *, int); struct thermal_instance *get_thermal_instance(struct thermal_zone_device *, struct thermal_cooling_device *, int); void thermal_cdev_update(struct thermal_cooling_device *); +void notify_thermal_framework(struct thermal_zone_device *, int); int thermal_register_governor(struct thermal_governor *); void thermal_unregister_governor(struct thermal_governor *); -- cgit v1.2.3 From 7cb15e10365203bffc5cc75c79725b6c31aa663e Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 10 Oct 2012 14:27:58 +0200 Subject: pinctrl/nomadik: move the platform data header This moves the platform data header for the Nomadik pin controller to . Signed-off-by: Linus Walleij --- include/linux/platform_data/pinctrl-nomadik.h | 108 ++++++++++++++++++++++++++ 1 file changed, 108 insertions(+) create mode 100644 include/linux/platform_data/pinctrl-nomadik.h (limited to 'include/linux') diff --git a/include/linux/platform_data/pinctrl-nomadik.h b/include/linux/platform_data/pinctrl-nomadik.h new file mode 100644 index 000000000000..a74999438de4 --- /dev/null +++ b/include/linux/platform_data/pinctrl-nomadik.h @@ -0,0 +1,108 @@ +/* + * Structures and registers for GPIO access in the Nomadik SoC + * + * Copyright (C) 2008 STMicroelectronics + * Author: Prafulla WADASKAR + * Copyright (C) 2009 Alessandro Rubini + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __PLAT_NOMADIK_GPIO +#define __PLAT_NOMADIK_GPIO + +/* + * "nmk_gpio" and "NMK_GPIO" stand for "Nomadik GPIO", leaving + * the "gpio" namespace for generic and cross-machine functions + */ + +#define GPIO_BLOCK_SHIFT 5 +#define NMK_GPIO_PER_CHIP (1 << GPIO_BLOCK_SHIFT) + +/* Register in the logic block */ +#define NMK_GPIO_DAT 0x00 +#define NMK_GPIO_DATS 0x04 +#define NMK_GPIO_DATC 0x08 +#define NMK_GPIO_PDIS 0x0c +#define NMK_GPIO_DIR 0x10 +#define NMK_GPIO_DIRS 0x14 +#define NMK_GPIO_DIRC 0x18 +#define NMK_GPIO_SLPC 0x1c +#define NMK_GPIO_AFSLA 0x20 +#define NMK_GPIO_AFSLB 0x24 +#define NMK_GPIO_LOWEMI 0x28 + +#define NMK_GPIO_RIMSC 0x40 +#define NMK_GPIO_FIMSC 0x44 +#define NMK_GPIO_IS 0x48 +#define NMK_GPIO_IC 0x4c +#define NMK_GPIO_RWIMSC 0x50 +#define NMK_GPIO_FWIMSC 0x54 +#define NMK_GPIO_WKS 0x58 +/* These appear in DB8540 and later ASICs */ +#define NMK_GPIO_EDGELEVEL 0x5C +#define NMK_GPIO_LEVEL 0x60 + +/* Alternate functions: function C is set in hw by setting both A and B */ +#define NMK_GPIO_ALT_GPIO 0 +#define NMK_GPIO_ALT_A 1 +#define NMK_GPIO_ALT_B 2 +#define NMK_GPIO_ALT_C (NMK_GPIO_ALT_A | NMK_GPIO_ALT_B) + +#define NMK_GPIO_ALT_CX_SHIFT 2 +#define NMK_GPIO_ALT_C1 ((1< Date: Wed, 10 Oct 2012 14:35:17 +0200 Subject: pinctrl/nomadik: merge old pincfg header This merges the old header into and rids us of yet one more include. Signed-off-by: Linus Walleij --- include/linux/platform_data/pinctrl-nomadik.h | 158 ++++++++++++++++++++++++++ 1 file changed, 158 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/pinctrl-nomadik.h b/include/linux/platform_data/pinctrl-nomadik.h index a74999438de4..f73b2f0c55b7 100644 --- a/include/linux/platform_data/pinctrl-nomadik.h +++ b/include/linux/platform_data/pinctrl-nomadik.h @@ -13,6 +13,160 @@ #ifndef __PLAT_NOMADIK_GPIO #define __PLAT_NOMADIK_GPIO +/* + * pin configurations are represented by 32-bit integers: + * + * bit 0.. 8 - Pin Number (512 Pins Maximum) + * bit 9..10 - Alternate Function Selection + * bit 11..12 - Pull up/down state + * bit 13 - Sleep mode behaviour + * bit 14 - Direction + * bit 15 - Value (if output) + * bit 16..18 - SLPM pull up/down state + * bit 19..20 - SLPM direction + * bit 21..22 - SLPM Value (if output) + * bit 23..25 - PDIS value (if input) + * bit 26 - Gpio mode + * bit 27 - Sleep mode + * + * to facilitate the definition, the following macros are provided + * + * PIN_CFG_DEFAULT - default config (0): + * pull up/down = disabled + * sleep mode = input/wakeup + * direction = input + * value = low + * SLPM direction = same as normal + * SLPM pull = same as normal + * SLPM value = same as normal + * + * PIN_CFG - default config with alternate function + */ + +typedef unsigned long pin_cfg_t; + +#define PIN_NUM_MASK 0x1ff +#define PIN_NUM(x) ((x) & PIN_NUM_MASK) + +#define PIN_ALT_SHIFT 9 +#define PIN_ALT_MASK (0x3 << PIN_ALT_SHIFT) +#define PIN_ALT(x) (((x) & PIN_ALT_MASK) >> PIN_ALT_SHIFT) +#define PIN_GPIO (NMK_GPIO_ALT_GPIO << PIN_ALT_SHIFT) +#define PIN_ALT_A (NMK_GPIO_ALT_A << PIN_ALT_SHIFT) +#define PIN_ALT_B (NMK_GPIO_ALT_B << PIN_ALT_SHIFT) +#define PIN_ALT_C (NMK_GPIO_ALT_C << PIN_ALT_SHIFT) + +#define PIN_PULL_SHIFT 11 +#define PIN_PULL_MASK (0x3 << PIN_PULL_SHIFT) +#define PIN_PULL(x) (((x) & PIN_PULL_MASK) >> PIN_PULL_SHIFT) +#define PIN_PULL_NONE (NMK_GPIO_PULL_NONE << PIN_PULL_SHIFT) +#define PIN_PULL_UP (NMK_GPIO_PULL_UP << PIN_PULL_SHIFT) +#define PIN_PULL_DOWN (NMK_GPIO_PULL_DOWN << PIN_PULL_SHIFT) + +#define PIN_SLPM_SHIFT 13 +#define PIN_SLPM_MASK (0x1 << PIN_SLPM_SHIFT) +#define PIN_SLPM(x) (((x) & PIN_SLPM_MASK) >> PIN_SLPM_SHIFT) +#define PIN_SLPM_MAKE_INPUT (NMK_GPIO_SLPM_INPUT << PIN_SLPM_SHIFT) +#define PIN_SLPM_NOCHANGE (NMK_GPIO_SLPM_NOCHANGE << PIN_SLPM_SHIFT) +/* These two replace the above in DB8500v2+ */ +#define PIN_SLPM_WAKEUP_ENABLE (NMK_GPIO_SLPM_WAKEUP_ENABLE << PIN_SLPM_SHIFT) +#define PIN_SLPM_WAKEUP_DISABLE (NMK_GPIO_SLPM_WAKEUP_DISABLE << PIN_SLPM_SHIFT) +#define PIN_SLPM_USE_MUX_SETTINGS_IN_SLEEP PIN_SLPM_WAKEUP_DISABLE + +#define PIN_SLPM_GPIO PIN_SLPM_WAKEUP_ENABLE /* In SLPM, pin is a gpio */ +#define PIN_SLPM_ALTFUNC PIN_SLPM_WAKEUP_DISABLE /* In SLPM, pin is altfunc */ + +#define PIN_DIR_SHIFT 14 +#define PIN_DIR_MASK (0x1 << PIN_DIR_SHIFT) +#define PIN_DIR(x) (((x) & PIN_DIR_MASK) >> PIN_DIR_SHIFT) +#define PIN_DIR_INPUT (0 << PIN_DIR_SHIFT) +#define PIN_DIR_OUTPUT (1 << PIN_DIR_SHIFT) + +#define PIN_VAL_SHIFT 15 +#define PIN_VAL_MASK (0x1 << PIN_VAL_SHIFT) +#define PIN_VAL(x) (((x) & PIN_VAL_MASK) >> PIN_VAL_SHIFT) +#define PIN_VAL_LOW (0 << PIN_VAL_SHIFT) +#define PIN_VAL_HIGH (1 << PIN_VAL_SHIFT) + +#define PIN_SLPM_PULL_SHIFT 16 +#define PIN_SLPM_PULL_MASK (0x7 << PIN_SLPM_PULL_SHIFT) +#define PIN_SLPM_PULL(x) \ + (((x) & PIN_SLPM_PULL_MASK) >> PIN_SLPM_PULL_SHIFT) +#define PIN_SLPM_PULL_NONE \ + ((1 + NMK_GPIO_PULL_NONE) << PIN_SLPM_PULL_SHIFT) +#define PIN_SLPM_PULL_UP \ + ((1 + NMK_GPIO_PULL_UP) << PIN_SLPM_PULL_SHIFT) +#define PIN_SLPM_PULL_DOWN \ + ((1 + NMK_GPIO_PULL_DOWN) << PIN_SLPM_PULL_SHIFT) + +#define PIN_SLPM_DIR_SHIFT 19 +#define PIN_SLPM_DIR_MASK (0x3 << PIN_SLPM_DIR_SHIFT) +#define PIN_SLPM_DIR(x) \ + (((x) & PIN_SLPM_DIR_MASK) >> PIN_SLPM_DIR_SHIFT) +#define PIN_SLPM_DIR_INPUT ((1 + 0) << PIN_SLPM_DIR_SHIFT) +#define PIN_SLPM_DIR_OUTPUT ((1 + 1) << PIN_SLPM_DIR_SHIFT) + +#define PIN_SLPM_VAL_SHIFT 21 +#define PIN_SLPM_VAL_MASK (0x3 << PIN_SLPM_VAL_SHIFT) +#define PIN_SLPM_VAL(x) \ + (((x) & PIN_SLPM_VAL_MASK) >> PIN_SLPM_VAL_SHIFT) +#define PIN_SLPM_VAL_LOW ((1 + 0) << PIN_SLPM_VAL_SHIFT) +#define PIN_SLPM_VAL_HIGH ((1 + 1) << PIN_SLPM_VAL_SHIFT) + +#define PIN_SLPM_PDIS_SHIFT 23 +#define PIN_SLPM_PDIS_MASK (0x3 << PIN_SLPM_PDIS_SHIFT) +#define PIN_SLPM_PDIS(x) \ + (((x) & PIN_SLPM_PDIS_MASK) >> PIN_SLPM_PDIS_SHIFT) +#define PIN_SLPM_PDIS_NO_CHANGE (0 << PIN_SLPM_PDIS_SHIFT) +#define PIN_SLPM_PDIS_DISABLED (1 << PIN_SLPM_PDIS_SHIFT) +#define PIN_SLPM_PDIS_ENABLED (2 << PIN_SLPM_PDIS_SHIFT) + +#define PIN_LOWEMI_SHIFT 25 +#define PIN_LOWEMI_MASK (0x1 << PIN_LOWEMI_SHIFT) +#define PIN_LOWEMI(x) (((x) & PIN_LOWEMI_MASK) >> PIN_LOWEMI_SHIFT) +#define PIN_LOWEMI_DISABLED (0 << PIN_LOWEMI_SHIFT) +#define PIN_LOWEMI_ENABLED (1 << PIN_LOWEMI_SHIFT) + +#define PIN_GPIOMODE_SHIFT 26 +#define PIN_GPIOMODE_MASK (0x1 << PIN_GPIOMODE_SHIFT) +#define PIN_GPIOMODE(x) (((x) & PIN_GPIOMODE_MASK) >> PIN_GPIOMODE_SHIFT) +#define PIN_GPIOMODE_DISABLED (0 << PIN_GPIOMODE_SHIFT) +#define PIN_GPIOMODE_ENABLED (1 << PIN_GPIOMODE_SHIFT) + +#define PIN_SLEEPMODE_SHIFT 27 +#define PIN_SLEEPMODE_MASK (0x1 << PIN_SLEEPMODE_SHIFT) +#define PIN_SLEEPMODE(x) (((x) & PIN_SLEEPMODE_MASK) >> PIN_SLEEPMODE_SHIFT) +#define PIN_SLEEPMODE_DISABLED (0 << PIN_SLEEPMODE_SHIFT) +#define PIN_SLEEPMODE_ENABLED (1 << PIN_SLEEPMODE_SHIFT) + + +/* Shortcuts. Use these instead of separate DIR, PULL, and VAL. */ +#define PIN_INPUT_PULLDOWN (PIN_DIR_INPUT | PIN_PULL_DOWN) +#define PIN_INPUT_PULLUP (PIN_DIR_INPUT | PIN_PULL_UP) +#define PIN_INPUT_NOPULL (PIN_DIR_INPUT | PIN_PULL_NONE) +#define PIN_OUTPUT_LOW (PIN_DIR_OUTPUT | PIN_VAL_LOW) +#define PIN_OUTPUT_HIGH (PIN_DIR_OUTPUT | PIN_VAL_HIGH) + +#define PIN_SLPM_INPUT_PULLDOWN (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_DOWN) +#define PIN_SLPM_INPUT_PULLUP (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_UP) +#define PIN_SLPM_INPUT_NOPULL (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_NONE) +#define PIN_SLPM_OUTPUT_LOW (PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_LOW) +#define PIN_SLPM_OUTPUT_HIGH (PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_HIGH) + +#define PIN_CFG_DEFAULT (0) + +#define PIN_CFG(num, alt) \ + (PIN_CFG_DEFAULT |\ + (PIN_NUM(num) | PIN_##alt)) + +#define PIN_CFG_INPUT(num, alt, pull) \ + (PIN_CFG_DEFAULT |\ + (PIN_NUM(num) | PIN_##alt | PIN_INPUT_##pull)) + +#define PIN_CFG_OUTPUT(num, alt, val) \ + (PIN_CFG_DEFAULT |\ + (PIN_NUM(num) | PIN_##alt | PIN_OUTPUT_##val)) + /* * "nmk_gpio" and "NMK_GPIO" stand for "Nomadik GPIO", leaving * the "gpio" namespace for generic and cross-machine functions @@ -72,6 +226,10 @@ enum nmk_gpio_slpm { NMK_GPIO_SLPM_WAKEUP_DISABLE = NMK_GPIO_SLPM_NOCHANGE, }; +/* Older deprecated pin config API that should go away soon */ +extern int nmk_config_pin(pin_cfg_t cfg, bool sleep); +extern int nmk_config_pins(pin_cfg_t *cfgs, int num); +extern int nmk_config_pins_sleep(pin_cfg_t *cfgs, int num); extern int nmk_gpio_set_slpm(int gpio, enum nmk_gpio_slpm mode); extern int nmk_gpio_set_pull(int gpio, enum nmk_gpio_pull pull); #ifdef CONFIG_PINCTRL_NOMADIK -- cgit v1.2.3 From 865fab601b8f910b2c634cf4c9211176f2c71cad Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 18 Oct 2012 14:20:16 +0200 Subject: ARM: plat-nomadik: move DMA40 header to This moves the DMA40 platform data header from to where is belongs. Cc: Dan Williams Cc: Mark Brown Cc: Ola Lilja Cc: Herbert Xu Cc: Andreas Westin Acked-by: Vinod Koul Acked-by: Arnd Bergmann Signed-off-by: Linus Walleij --- include/linux/platform_data/crypto-ux500.h | 2 +- include/linux/platform_data/dma-ste-dma40.h | 223 ++++++++++++++++++++++++++++ 2 files changed, 224 insertions(+), 1 deletion(-) create mode 100644 include/linux/platform_data/dma-ste-dma40.h (limited to 'include/linux') diff --git a/include/linux/platform_data/crypto-ux500.h b/include/linux/platform_data/crypto-ux500.h index 5b2d0817e26a..94df96d9a336 100644 --- a/include/linux/platform_data/crypto-ux500.h +++ b/include/linux/platform_data/crypto-ux500.h @@ -7,7 +7,7 @@ #ifndef _CRYPTO_UX500_H #define _CRYPTO_UX500_H #include -#include +#include struct hash_platform_data { void *mem_to_engine; diff --git a/include/linux/platform_data/dma-ste-dma40.h b/include/linux/platform_data/dma-ste-dma40.h new file mode 100644 index 000000000000..9ff93b065686 --- /dev/null +++ b/include/linux/platform_data/dma-ste-dma40.h @@ -0,0 +1,223 @@ +/* + * Copyright (C) ST-Ericsson SA 2007-2010 + * Author: Per Forlin for ST-Ericsson + * Author: Jonas Aaberg for ST-Ericsson + * License terms: GNU General Public License (GPL) version 2 + */ + + +#ifndef STE_DMA40_H +#define STE_DMA40_H + +#include +#include +#include +#include + +/* + * Maxium size for a single dma descriptor + * Size is limited to 16 bits. + * Size is in the units of addr-widths (1,2,4,8 bytes) + * Larger transfers will be split up to multiple linked desc + */ +#define STEDMA40_MAX_SEG_SIZE 0xFFFF + +/* dev types for memcpy */ +#define STEDMA40_DEV_DST_MEMORY (-1) +#define STEDMA40_DEV_SRC_MEMORY (-1) + +enum stedma40_mode { + STEDMA40_MODE_LOGICAL = 0, + STEDMA40_MODE_PHYSICAL, + STEDMA40_MODE_OPERATION, +}; + +enum stedma40_mode_opt { + STEDMA40_PCHAN_BASIC_MODE = 0, + STEDMA40_LCHAN_SRC_LOG_DST_LOG = 0, + STEDMA40_PCHAN_MODULO_MODE, + STEDMA40_PCHAN_DOUBLE_DST_MODE, + STEDMA40_LCHAN_SRC_PHY_DST_LOG, + STEDMA40_LCHAN_SRC_LOG_DST_PHY, +}; + +#define STEDMA40_ESIZE_8_BIT 0x0 +#define STEDMA40_ESIZE_16_BIT 0x1 +#define STEDMA40_ESIZE_32_BIT 0x2 +#define STEDMA40_ESIZE_64_BIT 0x3 + +/* The value 4 indicates that PEN-reg shall be set to 0 */ +#define STEDMA40_PSIZE_PHY_1 0x4 +#define STEDMA40_PSIZE_PHY_2 0x0 +#define STEDMA40_PSIZE_PHY_4 0x1 +#define STEDMA40_PSIZE_PHY_8 0x2 +#define STEDMA40_PSIZE_PHY_16 0x3 + +/* + * The number of elements differ in logical and + * physical mode + */ +#define STEDMA40_PSIZE_LOG_1 STEDMA40_PSIZE_PHY_2 +#define STEDMA40_PSIZE_LOG_4 STEDMA40_PSIZE_PHY_4 +#define STEDMA40_PSIZE_LOG_8 STEDMA40_PSIZE_PHY_8 +#define STEDMA40_PSIZE_LOG_16 STEDMA40_PSIZE_PHY_16 + +/* Maximum number of possible physical channels */ +#define STEDMA40_MAX_PHYS 32 + +enum stedma40_flow_ctrl { + STEDMA40_NO_FLOW_CTRL, + STEDMA40_FLOW_CTRL, +}; + +enum stedma40_periph_data_width { + STEDMA40_BYTE_WIDTH = STEDMA40_ESIZE_8_BIT, + STEDMA40_HALFWORD_WIDTH = STEDMA40_ESIZE_16_BIT, + STEDMA40_WORD_WIDTH = STEDMA40_ESIZE_32_BIT, + STEDMA40_DOUBLEWORD_WIDTH = STEDMA40_ESIZE_64_BIT +}; + +enum stedma40_xfer_dir { + STEDMA40_MEM_TO_MEM = 1, + STEDMA40_MEM_TO_PERIPH, + STEDMA40_PERIPH_TO_MEM, + STEDMA40_PERIPH_TO_PERIPH +}; + + +/** + * struct stedma40_chan_cfg - dst/src channel configuration + * + * @big_endian: true if the src/dst should be read as big endian + * @data_width: Data width of the src/dst hardware + * @p_size: Burst size + * @flow_ctrl: Flow control on/off. + */ +struct stedma40_half_channel_info { + bool big_endian; + enum stedma40_periph_data_width data_width; + int psize; + enum stedma40_flow_ctrl flow_ctrl; +}; + +/** + * struct stedma40_chan_cfg - Structure to be filled by client drivers. + * + * @dir: MEM 2 MEM, PERIPH 2 MEM , MEM 2 PERIPH, PERIPH 2 PERIPH + * @high_priority: true if high-priority + * @realtime: true if realtime mode is to be enabled. Only available on DMA40 + * version 3+, i.e DB8500v2+ + * @mode: channel mode: physical, logical, or operation + * @mode_opt: options for the chosen channel mode + * @src_dev_type: Src device type + * @dst_dev_type: Dst device type + * @src_info: Parameters for dst half channel + * @dst_info: Parameters for dst half channel + * @use_fixed_channel: if true, use physical channel specified by phy_channel + * @phy_channel: physical channel to use, only if use_fixed_channel is true + * + * This structure has to be filled by the client drivers. + * It is recommended to do all dma configurations for clients in the machine. + * + */ +struct stedma40_chan_cfg { + enum stedma40_xfer_dir dir; + bool high_priority; + bool realtime; + enum stedma40_mode mode; + enum stedma40_mode_opt mode_opt; + int src_dev_type; + int dst_dev_type; + struct stedma40_half_channel_info src_info; + struct stedma40_half_channel_info dst_info; + + bool use_fixed_channel; + int phy_channel; +}; + +/** + * struct stedma40_platform_data - Configuration struct for the dma device. + * + * @dev_len: length of dev_tx and dev_rx + * @dev_tx: mapping between destination event line and io address + * @dev_rx: mapping between source event line and io address + * @memcpy: list of memcpy event lines + * @memcpy_len: length of memcpy + * @memcpy_conf_phy: default configuration of physical channel memcpy + * @memcpy_conf_log: default configuration of logical channel memcpy + * @disabled_channels: A vector, ending with -1, that marks physical channels + * that are for different reasons not available for the driver. + */ +struct stedma40_platform_data { + u32 dev_len; + const dma_addr_t *dev_tx; + const dma_addr_t *dev_rx; + int *memcpy; + u32 memcpy_len; + struct stedma40_chan_cfg *memcpy_conf_phy; + struct stedma40_chan_cfg *memcpy_conf_log; + int disabled_channels[STEDMA40_MAX_PHYS]; + bool use_esram_lcla; +}; + +#ifdef CONFIG_STE_DMA40 + +/** + * stedma40_filter() - Provides stedma40_chan_cfg to the + * ste_dma40 dma driver via the dmaengine framework. + * does some checking of what's provided. + * + * Never directly called by client. It used by dmaengine. + * @chan: dmaengine handle. + * @data: Must be of type: struct stedma40_chan_cfg and is + * the configuration of the framework. + * + * + */ + +bool stedma40_filter(struct dma_chan *chan, void *data); + +/** + * stedma40_slave_mem() - Transfers a raw data buffer to or from a slave + * (=device) + * + * @chan: dmaengine handle + * @addr: source or destination physicall address. + * @size: bytes to transfer + * @direction: direction of transfer + * @flags: is actually enum dma_ctrl_flags. See dmaengine.h + */ + +static inline struct +dma_async_tx_descriptor *stedma40_slave_mem(struct dma_chan *chan, + dma_addr_t addr, + unsigned int size, + enum dma_transfer_direction direction, + unsigned long flags) +{ + struct scatterlist sg; + sg_init_table(&sg, 1); + sg.dma_address = addr; + sg.length = size; + + return dmaengine_prep_slave_sg(chan, &sg, 1, direction, flags); +} + +#else +static inline bool stedma40_filter(struct dma_chan *chan, void *data) +{ + return false; +} + +static inline struct +dma_async_tx_descriptor *stedma40_slave_mem(struct dma_chan *chan, + dma_addr_t addr, + unsigned int size, + enum dma_transfer_direction direction, + unsigned long flags) +{ + return NULL; +} +#endif + +#endif -- cgit v1.2.3 From 694e33a7f42de7dcc8b43c3990c597b19ef9b438 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 18 Oct 2012 14:01:25 +0200 Subject: ARM: plat-nomadik: move MTU, kill plat-nomadik This moves the MTU timer driver from arch/arm/plat-nomadik to drivers/clocksource and moves the header file to the platform_data directory. As this moves the last file being compiled to an object out of arch/arm/plat-nomadik, we have to "turn off the light" and delete the plat-nomadik directory, because it is not allowed to have an empty Makefile in a plat-* directory. This is probably also a desired side effect of depopulating the arch/arm directory of drivers. Luckily we have just deleted all the include files prior to this so by moving the last one we may delete the directory. After this all the Ux500 and Nomadik device drivers live outside of the arch/arm hierarchy. Cc: Alessandro Rubini Acked-by: Arnd Bergmann Signed-off-by: Linus Walleij --- include/linux/platform_data/clocksource-nomadik-mtu.h | 9 +++++++++ 1 file changed, 9 insertions(+) create mode 100644 include/linux/platform_data/clocksource-nomadik-mtu.h (limited to 'include/linux') diff --git a/include/linux/platform_data/clocksource-nomadik-mtu.h b/include/linux/platform_data/clocksource-nomadik-mtu.h new file mode 100644 index 000000000000..80088973b734 --- /dev/null +++ b/include/linux/platform_data/clocksource-nomadik-mtu.h @@ -0,0 +1,9 @@ +#ifndef __PLAT_MTU_H +#define __PLAT_MTU_H + +void nmdk_timer_init(void __iomem *base, int irq); +void nmdk_clkevt_reset(void); +void nmdk_clksrc_reset(void); + +#endif /* __PLAT_MTU_H */ + -- cgit v1.2.3 From ba350fbc53b5798104b3fc245bb3c3461a4ef8dc Mon Sep 17 00:00:00 2001 From: Arend van Spriel Date: Mon, 5 Nov 2012 15:29:09 +0100 Subject: wireless: add peer-to-peer related definitions The Peer-to-Peer IE is vendor-specific IE identified by WiFi Alliance OUI and specific P2P OUI type. The payload of this IE consists of so-called P2P attributes. This patch adds definitions for processing these attributes. Reviewed-by: Hante Meuleman Reviewed-by: Pieter-Paul Giesberts Reviewed-by: Franky (Zhenhui) Lin Signed-off-by: Arend van Spriel Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 85764a900731..4530d4960953 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -905,6 +905,38 @@ struct ieee80211_tdls_data { } u; } __packed; +/* + * Peer-to-Peer IE attribute related definitions. + */ +/** + * enum ieee80211_p2p_attr_id - identifies type of peer-to-peer attribute. + */ +enum ieee80211_p2p_attr_id { + IEEE80211_P2P_ATTR_STATUS = 0, + IEEE80211_P2P_ATTR_MINOR_REASON, + IEEE80211_P2P_ATTR_CAPABILITY, + IEEE80211_P2P_ATTR_DEVICE_ID, + IEEE80211_P2P_ATTR_GO_INTENT, + IEEE80211_P2P_ATTR_GO_CONFIG_TIMEOUT, + IEEE80211_P2P_ATTR_LISTEN_CHANNEL, + IEEE80211_P2P_ATTR_GROUP_BSSID, + IEEE80211_P2P_ATTR_EXT_LISTEN_TIMING, + IEEE80211_P2P_ATTR_INTENDED_IFACE_ADDR, + IEEE80211_P2P_ATTR_MANAGABILITY, + IEEE80211_P2P_ATTR_CHANNEL_LIST, + IEEE80211_P2P_ATTR_ABSENCE_NOTICE, + IEEE80211_P2P_ATTR_DEVICE_INFO, + IEEE80211_P2P_ATTR_GROUP_INFO, + IEEE80211_P2P_ATTR_GROUP_ID, + IEEE80211_P2P_ATTR_INTERFACE, + IEEE80211_P2P_ATTR_OPER_CHANNEL, + IEEE80211_P2P_ATTR_INVITE_FLAGS, + /* 19 - 220: Reserved */ + IEEE80211_P2P_ATTR_VENDOR_SPECIFIC = 221, + + IEEE80211_P2P_ATTR_MAX +}; + /** * struct ieee80211_bar - HT Block Ack Request * -- cgit v1.2.3 From 3ecbf05be159a95e1d23ba9b3b21c5bc2941ba6b Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Mon, 24 Sep 2012 14:55:40 +0100 Subject: mfd: Versatile Express config infrastructure Versatile Express platform has an elaborated configuration system, consisting of microcontrollers residing on the mother- and daughterboards known as Motherboard/Daughterboard Configuration Controller (MCC and DCC). The controllers are responsible for the platform initialization (reset generation, flash programming, FPGA bitfiles loading etc.) but also control clock generators, voltage regulators, gather environmental data like temperature, power consumption etc. Even the video output switch (FPGA) is controlled that way. Those devices are _not_ visible in the main address space and the usual communication channel uses some kind of a bridge in the peripheral block sending commands (requests) to the controllers and receiving responses. It can take up to 500 microseconds for a transaction to be completed, therefore it is important to provide a non-blocking interface to it. This patch adds an abstraction of this infrastructure. Bridge drivers can register themselves with the framework. Then, a driver of a device can request an abstract "function" - the request will be redirected to a bridge referred by thedd "arm,vexpress,config-bridge" property of the device tree node. Signed-off-by: Pawel Moll --- include/linux/vexpress.h | 85 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 include/linux/vexpress.h (limited to 'include/linux') diff --git a/include/linux/vexpress.h b/include/linux/vexpress.h new file mode 100644 index 000000000000..c2d877a7b691 --- /dev/null +++ b/include/linux/vexpress.h @@ -0,0 +1,85 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * Copyright (C) 2012 ARM Limited + */ + +#ifndef _LINUX_VEXPRESS_H +#define _LINUX_VEXPRESS_H + +#include + +#define VEXPRESS_SITE_MB 0 +#define VEXPRESS_SITE_DB1 1 +#define VEXPRESS_SITE_DB2 2 +#define VEXPRESS_SITE_MASTER 0xf + +#define VEXPRESS_CONFIG_STATUS_DONE 0 +#define VEXPRESS_CONFIG_STATUS_WAIT 1 + +/* Config bridge API */ + +/** + * struct vexpress_config_bridge_info - description of the platform + * configuration infrastructure bridge. + * + * @name: Bridge name + * + * @func_get: Obtains pointer to a configuration function for a given + * device or a Device Tree node, to be used with @func_put + * and @func_exec. The node pointer should take precedence + * over device pointer when both are passed. + * + * @func_put: Tells the bridge that the function will not be used any + * more, so all allocated resources can be released. + * + * @func_exec: Executes a configuration function read or write operation. + * The offset selects a 32 bit word of the value accessed. + * Must return VEXPRESS_CONFIG_STATUS_DONE when operation + * is finished immediately, VEXPRESS_CONFIG_STATUS_WAIT when + * will be completed in some time or negative value in case + * of error. + */ +struct vexpress_config_bridge_info { + const char *name; + void *(*func_get)(struct device *dev, struct device_node *node); + void (*func_put)(void *func); + int (*func_exec)(void *func, int offset, bool write, u32 *data); +}; + +struct vexpress_config_bridge; + +struct vexpress_config_bridge *vexpress_config_bridge_register( + struct device_node *node, + struct vexpress_config_bridge_info *info); +void vexpress_config_bridge_unregister(struct vexpress_config_bridge *bridge); + +void vexpress_config_complete(struct vexpress_config_bridge *bridge, + int status); + +/* Config function API */ + +struct vexpress_config_func; + +struct vexpress_config_func *__vexpress_config_func_get(struct device *dev, + struct device_node *node); +#define vexpress_config_func_get_by_dev(dev) \ + __vexpress_config_func_get(dev, NULL) +#define vexpress_config_func_get_by_node(node) \ + __vexpress_config_func_get(NULL, node) +void vexpress_config_func_put(struct vexpress_config_func *func); + +/* Both may sleep! */ +int vexpress_config_read(struct vexpress_config_func *func, int offset, + u32 *data); +int vexpress_config_write(struct vexpress_config_func *func, int offset, + u32 data); + +#endif -- cgit v1.2.3 From 88e0abcd7a8171ca7af3402373e7bd81fe9b6754 Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Tue, 18 Sep 2012 12:24:57 +0100 Subject: mfd: Versatile Express system registers driver This is a platform driver for Versatile Express' "system register" block. It's a random collection of registers providing the following functionality: - low level platform functions like board ID access; in order to use those, the driver must be initialized early, either statically or based on the DT - config bus bridge via "system control" interface; as the response from the controller does not generate interrupt (yet), the status register is periodically polled using a timer - pseudo GPIO lines providing MMC card status and Flash WP# signal control - LED interface for a set of 8 LEDs on the motherboard, with "heartbeat", "mmc0" and "cpu0" to "cpu5" as default triggers Signed-off-by: Pawel Moll --- include/linux/vexpress.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'include/linux') diff --git a/include/linux/vexpress.h b/include/linux/vexpress.h index c2d877a7b691..09c81d7a22de 100644 --- a/include/linux/vexpress.h +++ b/include/linux/vexpress.h @@ -24,6 +24,17 @@ #define VEXPRESS_CONFIG_STATUS_DONE 0 #define VEXPRESS_CONFIG_STATUS_WAIT 1 +#define VEXPRESS_GPIO_MMC_CARDIN 0 +#define VEXPRESS_GPIO_MMC_WPROT 1 +#define VEXPRESS_GPIO_FLASH_WPn 2 + +#define VEXPRESS_RES_FUNC(_site, _func) \ +{ \ + .start = (_site), \ + .end = (_func), \ + .flags = IORESOURCE_BUS, \ +} + /* Config bridge API */ /** @@ -82,4 +93,18 @@ int vexpress_config_read(struct vexpress_config_func *func, int offset, int vexpress_config_write(struct vexpress_config_func *func, int offset, u32 data); +/* Platform control */ + +u32 vexpress_get_procid(int site); +u32 vexpress_get_hbi(int site); +void *vexpress_get_24mhz_clock_base(void); +void vexpress_flags_set(u32 data); + +#define vexpress_get_site_by_node(node) __vexpress_get_site(NULL, node) +#define vexpress_get_site_by_dev(dev) __vexpress_get_site(dev, NULL) +unsigned __vexpress_get_site(struct device *dev, struct device_node *node); + +void vexpress_sysreg_early_init(void __iomem *base); +void vexpress_sysreg_of_early_init(void); + #endif -- cgit v1.2.3 From 38669e045dbf8f62a008898a7fb1e93975b3817c Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Tue, 9 Oct 2012 12:56:36 +0100 Subject: ARM: vexpress: Start using new Versatile Express infrastructure This patch starts using all the configuration infrastructure. - generic GPIO library is forced now - sysreg GPIOs are used as MMC CD and WP information sources; thanks to this MMCI auxiliary data is not longer necessary - DVI muxer and mode control is removed from non-DT V2P-CA9 code as this is now handled by the vexpress-dvi driver - clock generators control is removed as is being handled by the common clock driver now - the sysreg and sysctl control is now delegated to the appropriate drivers and all related code was removed - NOR Flash set_vpp function has been removed as the control bit used does _not_ control its VPP line, but the #WP signal instead (which is de facto unusable in case of Linux MTD drivers); this also allowed the remove its DT auxiliary data The non-DT code defines only minimal required number of the config devices. Device Trees are updated to make use of all new features. Signed-off-by: Pawel Moll --- include/linux/vexpress.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/vexpress.h b/include/linux/vexpress.h index 09c81d7a22de..c52215ff4245 100644 --- a/include/linux/vexpress.h +++ b/include/linux/vexpress.h @@ -107,4 +107,15 @@ unsigned __vexpress_get_site(struct device *dev, struct device_node *node); void vexpress_sysreg_early_init(void __iomem *base); void vexpress_sysreg_of_early_init(void); +void vexpress_power_off(void); +void vexpress_restart(char str, const char *cmd); + +/* Clocks */ + +struct clk *vexpress_osc_setup(struct device *dev); +void vexpress_osc_of_setup(struct device_node *node); + +void vexpress_clk_init(void __iomem *sp810_base); +void vexpress_clk_of_init(void); + #endif -- cgit v1.2.3 From ed95779340b50e362245c81b5dec0d11a1debfa8 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 5 Nov 2012 09:16:58 -0800 Subject: cgroup: kill cgroup_subsys->__DEPRECATED_clear_css_refs 2ef37d3fe4 ("memcg: Simplify mem_cgroup_force_empty_list error handling") removed the last user of __DEPRECATED_clear_css_refs. This patch removes __DEPRECATED_clear_css_refs and mechanisms to support it. * Conditionals dependent on __DEPRECATED_clear_css_refs removed. * cgroup_clear_css_refs() can no longer fail. All that needs to be done are deactivating refcnts, setting CSS_REMOVED and putting the base reference on each css. Remove cgroup_clear_css_refs() and the failure path, and open-code the loops into cgroup_rmdir(). This patch keeps the two for_each_subsys() loops separate while open coding them. They can be merged now but there are scheduled changes which need them to be separate, so keep them separate to reduce the amount of churn. local_irq_save/restore() from cgroup_clear_css_refs() are replaced with local_irq_disable/enable() for simplicity. This is safe as cgroup_rmdir() is always called with IRQ enabled. Note that this IRQ switching is necessary to ensure that css_tryget() isn't called from IRQ context on the same CPU while lower context is between CSS deactivation and setting CSS_REMOVED as css_tryget() would hang forever in such cases waiting for CSS to be re-activated or CSS_REMOVED set. This will go away soon. v2: cgroup_call_pre_destroy() removal dropped per Michal. Commit message updated to explain local_irq_disable/enable() conversion. Signed-off-by: Tejun Heo Reviewed-by: Michal Hocko Reviewed-by: KAMEZAWA Hiroyuki Acked-by: Li Zefan --- include/linux/cgroup.h | 12 ------------ 1 file changed, 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index c90eaa803440..02e09c0e98ab 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -86,7 +86,6 @@ struct cgroup_subsys_state { enum { CSS_ROOT, /* This CSS is the root of the subsystem */ CSS_REMOVED, /* This CSS is dead */ - CSS_CLEAR_CSS_REFS, /* @ss->__DEPRECATED_clear_css_refs */ }; /* Caller must verify that the css is not for root cgroup */ @@ -485,17 +484,6 @@ struct cgroup_subsys { */ bool use_id; - /* - * If %true, cgroup removal will try to clear css refs by retrying - * ss->pre_destroy() until there's no css ref left. This behavior - * is strictly for backward compatibility and will be removed as - * soon as the current user (memcg) is updated. - * - * If %false, ss->pre_destroy() can't fail and cgroup removal won't - * wait for css refs to drop to zero before proceeding. - */ - bool __DEPRECATED_clear_css_refs; - #define MAX_CGROUP_TYPE_NAMELEN 32 const char *name; -- cgit v1.2.3 From e93160803ffda2e67d9ff9cacb63bb6868c8398f Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 5 Nov 2012 09:16:58 -0800 Subject: cgroup: kill CSS_REMOVED CSS_REMOVED is one of the several contortions which were necessary to support css reference draining on cgroup removal. All css->refcnts which need draining should be deactivated and verified to equal zero atomically w.r.t. css_tryget(). If any one isn't zero, all refcnts needed to be re-activated and css_tryget() shouldn't fail in the process. This was achieved by letting css_tryget() busy-loop until either the refcnt is reactivated (failed removal attempt) or CSS_REMOVED is set (committing to removal). Now that css refcnt draining is no longer used, there's no need for atomic rollback mechanism. css_tryget() simply can look at the reference count and fail if it's deactivated - it's never getting re-activated. This patch removes CSS_REMOVED and updates __css_tryget() to fail if the refcnt is deactivated. As deactivation and removal are a single step now, they no longer need to be protected against css_tryget() happening from irq context. Remove local_irq_disable/enable() from cgroup_rmdir(). Note that this removes css_is_removed() whose only user is VM_BUG_ON() in memcontrol.c. We can replace it with a check on the refcnt but given that the only use case is a debug assert, I think it's better to simply unexport it. v2: Comment updated and explanation on local_irq_disable/enable() added per Michal Hocko. Signed-off-by: Tejun Heo Reviewed-by: Michal Hocko Reviewed-by: KAMEZAWA Hiroyuki Acked-by: Li Zefan Cc: Johannes Weiner Cc: Balbir Singh --- include/linux/cgroup.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 02e09c0e98ab..a3098046250b 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -85,7 +85,6 @@ struct cgroup_subsys_state { /* bits in struct cgroup_subsys_state flags field */ enum { CSS_ROOT, /* This CSS is the root of the subsystem */ - CSS_REMOVED, /* This CSS is dead */ }; /* Caller must verify that the css is not for root cgroup */ @@ -108,11 +107,6 @@ static inline void css_get(struct cgroup_subsys_state *css) __css_get(css, 1); } -static inline bool css_is_removed(struct cgroup_subsys_state *css) -{ - return test_bit(CSS_REMOVED, &css->flags); -} - /* * Call css_tryget() to take a reference on a css if your existing * (known-valid) reference isn't already ref-counted. Returns false if -- cgit v1.2.3 From b25ed609d0eecf077db607e88ea70bae83b6adb2 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 5 Nov 2012 09:16:59 -0800 Subject: cgroup: remove CGRP_WAIT_ON_RMDIR, cgroup_exclude_rmdir() and cgroup_release_and_wakeup_rmdir() CGRP_WAIT_ON_RMDIR is another kludge which was added to make cgroup destruction rollback somewhat working. cgroup_rmdir() used to drain CSS references and CGRP_WAIT_ON_RMDIR and the associated waitqueue and helpers were used to allow the task performing rmdir to wait for the next relevant event. Unfortunately, the wait is visible to controllers too and the mechanism got exposed to memcg by 887032670d ("cgroup avoid permanent sleep at rmdir"). Now that the draining and retries are gone, CGRP_WAIT_ON_RMDIR is unnecessary. Remove it and all the mechanisms supporting it. Note that memcontrol.c changes are essentially revert of 887032670d ("cgroup avoid permanent sleep at rmdir"). Signed-off-by: Tejun Heo Reviewed-by: Michal Hocko Reviewed-by: KAMEZAWA Hiroyuki Acked-by: Li Zefan Cc: Balbir Singh --- include/linux/cgroup.h | 21 --------------------- 1 file changed, 21 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index a3098046250b..47868a86ba2b 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -144,10 +144,6 @@ enum { CGRP_RELEASABLE, /* Control Group requires release notifications to userspace */ CGRP_NOTIFY_ON_RELEASE, - /* - * A thread in rmdir() is wating for this cgroup. - */ - CGRP_WAIT_ON_RMDIR, /* * Clone cgroup values when creating a new child cgroup */ @@ -411,23 +407,6 @@ int cgroup_task_count(const struct cgroup *cgrp); /* Return true if cgrp is a descendant of the task's cgroup */ int cgroup_is_descendant(const struct cgroup *cgrp, struct task_struct *task); -/* - * When the subsys has to access css and may add permanent refcnt to css, - * it should take care of racy conditions with rmdir(). Following set of - * functions, is for stop/restart rmdir if necessary. - * Because these will call css_get/put, "css" should be alive css. - * - * cgroup_exclude_rmdir(); - * ...do some jobs which may access arbitrary empty cgroup - * cgroup_release_and_wakeup_rmdir(); - * - * When someone removes a cgroup while cgroup_exclude_rmdir() holds it, - * it sleeps and cgroup_release_and_wakeup_rmdir() will wake him up. - */ - -void cgroup_exclude_rmdir(struct cgroup_subsys_state *css); -void cgroup_release_and_wakeup_rmdir(struct cgroup_subsys_state *css); - /* * Control Group taskset, used to pass around set of tasks to cgroup_subsys * methods. -- cgit v1.2.3 From bcf6de1b9129531215d26dd9af8331e84973bc52 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 5 Nov 2012 09:16:59 -0800 Subject: cgroup: make ->pre_destroy() return void All ->pre_destory() implementations return 0 now, which is the only allowed return value. Make it return void. Signed-off-by: Tejun Heo Reviewed-by: Michal Hocko Acked-by: KAMEZAWA Hiroyuki Acked-by: Li Zefan Cc: Balbir Singh Cc: Vivek Goyal --- include/linux/cgroup.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 47868a86ba2b..adb2adc8ec1a 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -436,7 +436,7 @@ int cgroup_taskset_size(struct cgroup_taskset *tset); struct cgroup_subsys { struct cgroup_subsys_state *(*create)(struct cgroup *cgrp); - int (*pre_destroy)(struct cgroup *cgrp); + void (*pre_destroy)(struct cgroup *cgrp); void (*destroy)(struct cgroup *cgrp); int (*can_attach)(struct cgroup *cgrp, struct cgroup_taskset *tset); void (*cancel_attach)(struct cgroup *cgrp, struct cgroup_taskset *tset); -- cgit v1.2.3 From cc95e347cbba3a29c6f8c95ec737624afe489d8e Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Wed, 19 Sep 2012 15:51:01 -0600 Subject: ARM: tegra: move tegra-ahb.h out of arch/arm/mach-tegra/ We wish to empty arch/arm/mach-tegra/include/mach/ as much as possible to enable single zImage. Move tegra-ahb.h to a more central location (suggested by Arnd, OK'd by Greg KH), and actually make tegra-ahb.c include the header to ensure client and provider agree on the prototype. Signed-off-by: Stephen Warren --- include/linux/tegra-ahb.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 include/linux/tegra-ahb.h (limited to 'include/linux') diff --git a/include/linux/tegra-ahb.h b/include/linux/tegra-ahb.h new file mode 100644 index 000000000000..f1cd075ceee1 --- /dev/null +++ b/include/linux/tegra-ahb.h @@ -0,0 +1,19 @@ +/* + * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + */ + +#ifndef __LINUX_AHB_H__ +#define __LINUX_AHB_H__ + +extern int tegra_ahb_enable_smmu(struct device_node *ahb); + +#endif /* __LINUX_AHB_H__ */ -- cgit v1.2.3 From 4eb3ccf157639a9d9c7829de94017c46c73d9cc4 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 5 Nov 2012 09:56:00 +0000 Subject: staging:iio: Move the ad7887 driver out of staging The driver does not expose any custom API to userspace and none of the standard static code checker tools report any issues, so move it out of staging. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- include/linux/platform_data/ad7887.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 include/linux/platform_data/ad7887.h (limited to 'include/linux') diff --git a/include/linux/platform_data/ad7887.h b/include/linux/platform_data/ad7887.h new file mode 100644 index 000000000000..1e06eac3174d --- /dev/null +++ b/include/linux/platform_data/ad7887.h @@ -0,0 +1,26 @@ +/* + * AD7887 SPI ADC driver + * + * Copyright 2010 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ +#ifndef IIO_ADC_AD7887_H_ +#define IIO_ADC_AD7887_H_ + +/** + * struct ad7887_platform_data - AD7887 ADC driver platform data + * @en_dual: Whether to use dual channel mode. If set to true AIN1 becomes the + * second input channel, and Vref is internally connected to Vdd. If set to + * false the device is used in single channel mode and AIN1/Vref is used as + * VREF input. + * @use_onchip_ref: Whether to use the onchip reference. If set to true the + * internal 2.5V reference is used. If set to false a external reference is + * used. + */ +struct ad7887_platform_data { + bool en_dual; + bool use_onchip_ref; +}; + +#endif /* IIO_ADC_AD7887_H_ */ -- cgit v1.2.3 From d1fb57435c108b8dd66d7f47b4c60c1798dcae4c Mon Sep 17 00:00:00 2001 From: "Patil, Rachna" Date: Tue, 16 Oct 2012 12:55:39 +0530 Subject: input: TSC: ti_tscadc: Add Step configuration as platform data There are 16 programmable Step Configuration registers which are used by the sequencer. Program the Steps in order to configure a channel input to be sampled. If the same step is applied several times, the coordinate values read are more accurate. Hence we provide the user an option of how many steps should be configured. For ex: If this value is assigned as 4, This means that 4 steps are applied to read x co-ordinate and 4 steps to read y co-ordinate. Furtheron the interrupt handler already holds code to use delta filter and report the best value out of these values to the input sub-system. Signed-off-by: Patil, Rachna Signed-off-by: Samuel Ortiz --- include/linux/input/ti_tscadc.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/input/ti_tscadc.h b/include/linux/input/ti_tscadc.h index b10a527a92a4..ad442a3eb68b 100644 --- a/include/linux/input/ti_tscadc.h +++ b/include/linux/input/ti_tscadc.h @@ -7,11 +7,17 @@ * i.e. 4/5/8 wire touchscreen support * on the platform. * @x_plate_resistance: X plate resistance. + * @steps_to_configure: The sequencer supports a total of + * 16 programmable steps. + * A step configured to read a single + * co-ordinate value, can be applied + * more number of times for better results. */ struct tsc_data { int wires; int x_plate_resistance; + int steps_to_configure; }; #endif -- cgit v1.2.3 From 55c04de5176ea3eac6fdc469a6a063c5cb91ed7c Mon Sep 17 00:00:00 2001 From: "Patil, Rachna" Date: Tue, 16 Oct 2012 12:55:42 +0530 Subject: input: TSC: ti_tscadc: Rename the existing touchscreen driver Make way for addition of MFD driver. The existing touchsreen driver is a MFD client. For better readability we rename the file to indicate its functionality as only touchscreen. Signed-off-by: Patil, Rachna Signed-off-by: Samuel Ortiz --- include/linux/input/ti_am335x_tsc.h | 23 +++++++++++++++++++++++ include/linux/input/ti_tscadc.h | 23 ----------------------- 2 files changed, 23 insertions(+), 23 deletions(-) create mode 100644 include/linux/input/ti_am335x_tsc.h delete mode 100644 include/linux/input/ti_tscadc.h (limited to 'include/linux') diff --git a/include/linux/input/ti_am335x_tsc.h b/include/linux/input/ti_am335x_tsc.h new file mode 100644 index 000000000000..49269a2aa329 --- /dev/null +++ b/include/linux/input/ti_am335x_tsc.h @@ -0,0 +1,23 @@ +#ifndef __LINUX_TI_AM335X_TSC_H +#define __LINUX_TI_AM335X_TSC_H + +/** + * struct tsc_data Touchscreen wire configuration + * @wires: Wires refer to application modes + * i.e. 4/5/8 wire touchscreen support + * on the platform. + * @x_plate_resistance: X plate resistance. + * @steps_to_configure: The sequencer supports a total of + * 16 programmable steps. + * A step configured to read a single + * co-ordinate value, can be applied + * more number of times for better results. + */ + +struct tsc_data { + int wires; + int x_plate_resistance; + int steps_to_configure; +}; + +#endif diff --git a/include/linux/input/ti_tscadc.h b/include/linux/input/ti_tscadc.h deleted file mode 100644 index ad442a3eb68b..000000000000 --- a/include/linux/input/ti_tscadc.h +++ /dev/null @@ -1,23 +0,0 @@ -#ifndef __LINUX_TI_TSCADC_H -#define __LINUX_TI_TSCADC_H - -/** - * struct tsc_data Touchscreen wire configuration - * @wires: Wires refer to application modes - * i.e. 4/5/8 wire touchscreen support - * on the platform. - * @x_plate_resistance: X plate resistance. - * @steps_to_configure: The sequencer supports a total of - * 16 programmable steps. - * A step configured to read a single - * co-ordinate value, can be applied - * more number of times for better results. - */ - -struct tsc_data { - int wires; - int x_plate_resistance; - int steps_to_configure; -}; - -#endif -- cgit v1.2.3 From 01636eb970a029897b06fb96026941429212ddd9 Mon Sep 17 00:00:00 2001 From: "Patil, Rachna" Date: Tue, 16 Oct 2012 12:55:43 +0530 Subject: mfd: ti_tscadc: Add support for TI's TSC/ADC MFDevice Add the mfd core driver which supports touchscreen and ADC. With this patch we are only adding infrastructure to support the MFD clients. Signed-off-by: Patil, Rachna Signed-off-by: Samuel Ortiz --- include/linux/mfd/ti_am335x_tscadc.h | 137 +++++++++++++++++++++++++++++++++++ 1 file changed, 137 insertions(+) create mode 100644 include/linux/mfd/ti_am335x_tscadc.h (limited to 'include/linux') diff --git a/include/linux/mfd/ti_am335x_tscadc.h b/include/linux/mfd/ti_am335x_tscadc.h new file mode 100644 index 000000000000..b7232b157061 --- /dev/null +++ b/include/linux/mfd/ti_am335x_tscadc.h @@ -0,0 +1,137 @@ +#ifndef __LINUX_TI_AM335X_TSCADC_MFD_H +#define __LINUX_TI_AM335X_TSCADC_MFD_H + +/* + * TI Touch Screen / ADC MFD driver + * + * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/ + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include + +#define REG_RAWIRQSTATUS 0x024 +#define REG_IRQSTATUS 0x028 +#define REG_IRQENABLE 0x02C +#define REG_IRQCLR 0x030 +#define REG_IRQWAKEUP 0x034 +#define REG_CTRL 0x040 +#define REG_ADCFSM 0x044 +#define REG_CLKDIV 0x04C +#define REG_SE 0x054 +#define REG_IDLECONFIG 0x058 +#define REG_CHARGECONFIG 0x05C +#define REG_CHARGEDELAY 0x060 +#define REG_STEPCONFIG(n) (0x64 + ((n - 1) * 8)) +#define REG_STEPDELAY(n) (0x68 + ((n - 1) * 8)) +#define REG_FIFO0CNT 0xE4 +#define REG_FIFO0THR 0xE8 +#define REG_FIFO1CNT 0xF0 +#define REG_FIFO1THR 0xF4 +#define REG_FIFO0 0x100 +#define REG_FIFO1 0x200 + +/* Register Bitfields */ +/* IRQ wakeup enable */ +#define IRQWKUP_ENB BIT(0) + +/* Step Enable */ +#define STEPENB_MASK (0x1FFFF << 0) +#define STEPENB(val) ((val) << 0) +#define STPENB_STEPENB STEPENB(0x1FFFF) + +/* IRQ enable */ +#define IRQENB_HW_PEN BIT(0) +#define IRQENB_FIFO0THRES BIT(2) +#define IRQENB_FIFO1THRES BIT(5) +#define IRQENB_PENUP BIT(9) + +/* Step Configuration */ +#define STEPCONFIG_MODE_MASK (3 << 0) +#define STEPCONFIG_MODE(val) ((val) << 0) +#define STEPCONFIG_MODE_HWSYNC STEPCONFIG_MODE(2) +#define STEPCONFIG_AVG_MASK (7 << 2) +#define STEPCONFIG_AVG(val) ((val) << 2) +#define STEPCONFIG_AVG_16 STEPCONFIG_AVG(4) +#define STEPCONFIG_XPP BIT(5) +#define STEPCONFIG_XNN BIT(6) +#define STEPCONFIG_YPP BIT(7) +#define STEPCONFIG_YNN BIT(8) +#define STEPCONFIG_XNP BIT(9) +#define STEPCONFIG_YPN BIT(10) +#define STEPCONFIG_INM_MASK (0xF << 15) +#define STEPCONFIG_INM(val) ((val) << 15) +#define STEPCONFIG_INM_ADCREFM STEPCONFIG_INM(8) +#define STEPCONFIG_INP_MASK (0xF << 19) +#define STEPCONFIG_INP(val) ((val) << 19) +#define STEPCONFIG_INP_AN2 STEPCONFIG_INP(2) +#define STEPCONFIG_INP_AN3 STEPCONFIG_INP(3) +#define STEPCONFIG_INP_AN4 STEPCONFIG_INP(4) +#define STEPCONFIG_INP_ADCREFM STEPCONFIG_INP(8) +#define STEPCONFIG_FIFO1 BIT(26) + +/* Delay register */ +#define STEPDELAY_OPEN_MASK (0x3FFFF << 0) +#define STEPDELAY_OPEN(val) ((val) << 0) +#define STEPCONFIG_OPENDLY STEPDELAY_OPEN(0x098) +#define STEPDELAY_SAMPLE_MASK (0xFF << 24) +#define STEPDELAY_SAMPLE(val) ((val) << 24) +#define STEPCONFIG_SAMPLEDLY STEPDELAY_SAMPLE(0) + +/* Charge Config */ +#define STEPCHARGE_RFP_MASK (7 << 12) +#define STEPCHARGE_RFP(val) ((val) << 12) +#define STEPCHARGE_RFP_XPUL STEPCHARGE_RFP(1) +#define STEPCHARGE_INM_MASK (0xF << 15) +#define STEPCHARGE_INM(val) ((val) << 15) +#define STEPCHARGE_INM_AN1 STEPCHARGE_INM(1) +#define STEPCHARGE_INP_MASK (0xF << 19) +#define STEPCHARGE_INP(val) ((val) << 19) +#define STEPCHARGE_INP_AN1 STEPCHARGE_INP(1) +#define STEPCHARGE_RFM_MASK (3 << 23) +#define STEPCHARGE_RFM(val) ((val) << 23) +#define STEPCHARGE_RFM_XNUR STEPCHARGE_RFM(1) + +/* Charge delay */ +#define CHARGEDLY_OPEN_MASK (0x3FFFF << 0) +#define CHARGEDLY_OPEN(val) ((val) << 0) +#define CHARGEDLY_OPENDLY CHARGEDLY_OPEN(1) + +/* Control register */ +#define CNTRLREG_TSCSSENB BIT(0) +#define CNTRLREG_STEPID BIT(1) +#define CNTRLREG_STEPCONFIGWRT BIT(2) +#define CNTRLREG_POWERDOWN BIT(4) +#define CNTRLREG_AFE_CTRL_MASK (3 << 5) +#define CNTRLREG_AFE_CTRL(val) ((val) << 5) +#define CNTRLREG_4WIRE CNTRLREG_AFE_CTRL(1) +#define CNTRLREG_5WIRE CNTRLREG_AFE_CTRL(2) +#define CNTRLREG_8WIRE CNTRLREG_AFE_CTRL(3) +#define CNTRLREG_TSCENB BIT(7) + +#define ADC_CLK 3000000 +#define MAX_CLK_DIV 7 + +#define TSCADC_CELLS 0 + +struct mfd_tscadc_board { + struct tsc_data *tsc_init; +}; + +struct ti_tscadc_dev { + struct device *dev; + struct regmap *regmap_tscadc; + void __iomem *tscadc_base; + int irq; + struct mfd_cell cells[TSCADC_CELLS]; +}; + +#endif -- cgit v1.2.3 From 2b99bafab19145a72e2c557326fc4662a864a162 Mon Sep 17 00:00:00 2001 From: "Patil, Rachna" Date: Tue, 16 Oct 2012 12:55:44 +0530 Subject: input: TSC: ti_tsc: Convert TSC into a MFDevice This patch converts touchscreen into a MFD client. All the register definitions, clock initialization, etc has been moved to MFD core driver. Signed-off-by: Patil, Rachna Signed-off-by: Samuel Ortiz --- include/linux/mfd/ti_am335x_tscadc.h | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/ti_am335x_tscadc.h b/include/linux/mfd/ti_am335x_tscadc.h index b7232b157061..fc18b2ef753f 100644 --- a/include/linux/mfd/ti_am335x_tscadc.h +++ b/include/linux/mfd/ti_am335x_tscadc.h @@ -47,6 +47,7 @@ #define STEPENB_MASK (0x1FFFF << 0) #define STEPENB(val) ((val) << 0) #define STPENB_STEPENB STEPENB(0x1FFFF) +#define STPENB_STEPENB_TC STEPENB(0x1FFF) /* IRQ enable */ #define IRQENB_HW_PEN BIT(0) @@ -120,7 +121,11 @@ #define ADC_CLK 3000000 #define MAX_CLK_DIV 7 -#define TSCADC_CELLS 0 +#define TSCADC_CELLS 1 + +enum tscadc_cells { + TSC_CELL, +}; struct mfd_tscadc_board { struct tsc_data *tsc_init; @@ -132,6 +137,9 @@ struct ti_tscadc_dev { void __iomem *tscadc_base; int irq; struct mfd_cell cells[TSCADC_CELLS]; + + /* tsc device */ + struct titsc *tsc; }; #endif -- cgit v1.2.3 From 5e53a69b44e893227b046a7bc74db3cb40d7f39b Mon Sep 17 00:00:00 2001 From: "Patil, Rachna" Date: Tue, 16 Oct 2012 12:55:45 +0530 Subject: IIO : ADC: tiadc: Add support of TI's ADC driver This patch adds support for TI's ADC driver. This is a multifunctional device. Analog input lines are provided on which voltage measurements can be carried out. You can have upto 8 input lines. Signed-off-by: Patil, Rachna Acked-by: Jonathan Cameron Signed-off-by: Samuel Ortiz --- include/linux/mfd/ti_am335x_tscadc.h | 9 ++++++++- include/linux/platform_data/ti_am335x_adc.h | 14 ++++++++++++++ 2 files changed, 22 insertions(+), 1 deletion(-) create mode 100644 include/linux/platform_data/ti_am335x_adc.h (limited to 'include/linux') diff --git a/include/linux/mfd/ti_am335x_tscadc.h b/include/linux/mfd/ti_am335x_tscadc.h index fc18b2ef753f..c79ad5d2f271 100644 --- a/include/linux/mfd/ti_am335x_tscadc.h +++ b/include/linux/mfd/ti_am335x_tscadc.h @@ -120,15 +120,19 @@ #define ADC_CLK 3000000 #define MAX_CLK_DIV 7 +#define TOTAL_STEPS 16 +#define TOTAL_CHANNELS 8 -#define TSCADC_CELLS 1 +#define TSCADC_CELLS 2 enum tscadc_cells { TSC_CELL, + ADC_CELL, }; struct mfd_tscadc_board { struct tsc_data *tsc_init; + struct adc_data *adc_init; }; struct ti_tscadc_dev { @@ -140,6 +144,9 @@ struct ti_tscadc_dev { /* tsc device */ struct titsc *tsc; + + /* adc device */ + struct adc_device *adc; }; #endif diff --git a/include/linux/platform_data/ti_am335x_adc.h b/include/linux/platform_data/ti_am335x_adc.h new file mode 100644 index 000000000000..e41d5834cb84 --- /dev/null +++ b/include/linux/platform_data/ti_am335x_adc.h @@ -0,0 +1,14 @@ +#ifndef __LINUX_TI_AM335X_ADC_H +#define __LINUX_TI_AM335X_ADC_H + +/** + * struct adc_data ADC Input information + * @adc_channels: Number of analog inputs + * available for ADC. + */ + +struct adc_data { + unsigned int adc_channels; +}; + +#endif -- cgit v1.2.3 From 636036d29a20154b897571e1d5949faac98bfb7c Mon Sep 17 00:00:00 2001 From: Bo Shen Date: Tue, 6 Nov 2012 13:57:51 +0800 Subject: ARM: at91: atmel-ssc: add platform device id table Add platform device id to check whether the SSC controller support pdc or dam for data transfer If match "at91rm9200_ssc", which support pdc for data transfer If match "at91sam9g45_ssc", which support dma for data transfer Signed-off-by: Bo Shen Acked-by: Nicolas Ferre Signed-off-by: Mark Brown --- include/linux/atmel-ssc.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/atmel-ssc.h b/include/linux/atmel-ssc.h index 4eb31752e2b7..1ca0e3292bc9 100644 --- a/include/linux/atmel-ssc.h +++ b/include/linux/atmel-ssc.h @@ -5,10 +5,15 @@ #include #include +struct atmel_ssc_platform_data { + int use_dma; +}; + struct ssc_device { struct list_head list; void __iomem *regs; struct platform_device *pdev; + struct atmel_ssc_platform_data *pdata; struct clk *clk; int user; int irq; -- cgit v1.2.3 From bcd2360c1ff9fff69eb45bedc5fba7240c6da875 Mon Sep 17 00:00:00 2001 From: Jean-Christophe PLAGNIOL-VILLARD Date: Tue, 30 Oct 2012 05:12:23 +0800 Subject: arm: at91: move platfarm_data to include/linux/platform_data/atmel.h Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD Cc: Nicolas Ferre --- include/linux/platform_data/atmel.h | 67 +++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/atmel.h b/include/linux/platform_data/atmel.h index b0f2c56a8ea2..dbd6d53cc270 100644 --- a/include/linux/platform_data/atmel.h +++ b/include/linux/platform_data/atmel.h @@ -8,6 +8,49 @@ #define __ATMEL_H__ #include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + /* USB Device */ +struct at91_udc_data { + int vbus_pin; /* high == host powering us */ + u8 vbus_active_low; /* vbus polarity */ + u8 vbus_polled; /* Use polling, not interrupt */ + int pullup_pin; /* active == D+ pulled up */ + u8 pullup_active_low; /* true == pullup_pin is active low */ +}; + + /* Compact Flash */ +struct at91_cf_data { + int irq_pin; /* I/O IRQ */ + int det_pin; /* Card detect */ + int vcc_pin; /* power switching */ + int rst_pin; /* card reset */ + u8 chipselect; /* EBI Chip Select number */ + u8 flags; +#define AT91_CF_TRUE_IDE 0x01 +#define AT91_IDE_SWAP_A0_A2 0x02 +}; + + /* USB Host */ +#define AT91_MAX_USBH_PORTS 3 +struct at91_usbh_data { + int vbus_pin[AT91_MAX_USBH_PORTS]; /* port power-control pin */ + int overcurrent_pin[AT91_MAX_USBH_PORTS]; + u8 ports; /* number of ports on root hub */ + u8 overcurrent_supported; + u8 vbus_pin_active_low[AT91_MAX_USBH_PORTS]; + u8 overcurrent_status[AT91_MAX_USBH_PORTS]; + u8 overcurrent_changed[AT91_MAX_USBH_PORTS]; +}; /* NAND / SmartMedia */ struct atmel_nand_data { @@ -24,4 +67,28 @@ struct atmel_nand_data { unsigned int num_parts; }; + /* Serial */ +struct atmel_uart_data { + int num; /* port num */ + short use_dma_tx; /* use transmit DMA? */ + short use_dma_rx; /* use receive DMA? */ + void __iomem *regs; /* virt. base address, if any */ + struct serial_rs485 rs485; /* rs485 settings */ +}; + + /* Touchscreen Controller */ +struct at91_tsadcc_data { + unsigned int adc_clock; + u8 pendet_debounce; + u8 ts_sample_hold_time; +}; + +/* CAN */ +struct at91_can_data { + void (*transceiver_switch)(int on); +}; + +/* FIXME: this needs a better location, but gets stuff building again */ +extern int at91_suspend_entering_slow_clock(void); + #endif /* __ATMEL_H__ */ -- cgit v1.2.3 From 0547fad2dd7ccaaf3c914ba49073fa37e4e241eb Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Tue, 6 Nov 2012 04:53:04 +0000 Subject: usbnet: introduce usbnet_{read|write}_cmd_nopm This patch introduces the below two helpers to prepare for solving the usbnet runtime PM problem, which may cause some network utilities (ifconfig, ethtool,...) touch a suspended device. usbnet_read_cmd_nopm() usbnet_write_cmd_nopm() The above two helpers should be called by usbnet resume/suspend callback to avoid deadlock. Signed-off-by: Ming Lei Signed-off-by: David S. Miller --- include/linux/usb/usbnet.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h index 4410e4166c6c..9bbeabf66c54 100644 --- a/include/linux/usb/usbnet.h +++ b/include/linux/usb/usbnet.h @@ -167,6 +167,10 @@ extern int usbnet_read_cmd(struct usbnet *dev, u8 cmd, u8 reqtype, u16 value, u16 index, void *data, u16 size); extern int usbnet_write_cmd(struct usbnet *dev, u8 cmd, u8 reqtype, u16 value, u16 index, const void *data, u16 size); +extern int usbnet_read_cmd_nopm(struct usbnet *dev, u8 cmd, u8 reqtype, + u16 value, u16 index, void *data, u16 size); +extern int usbnet_write_cmd_nopm(struct usbnet *dev, u8 cmd, u8 reqtype, + u16 value, u16 index, const void *data, u16 size); extern int usbnet_write_cmd_async(struct usbnet *dev, u8 cmd, u8 reqtype, u16 value, u16 index, const void *data, u16 size); -- cgit v1.2.3 From 642c92da36ae0bed3c31fdd408411ab95f4e326b Mon Sep 17 00:00:00 2001 From: Taku Izumi Date: Tue, 30 Oct 2012 15:26:18 +0900 Subject: PCI: Don't pass pci_dev to pci_ext_cfg_avail() pci_ext_cfg_avail() doesn't use the "struct pci_dev *" passed to it, and there's no requirement that a host bridge even be represented by a pci_dev. This drops the pci_ext_cfg_avail() parameter. [bhelgaas: changelog] Signed-off-by: Taku Izumi Signed-off-by: Bjorn Helgaas --- include/linux/pci.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 786094254d57..9253af697ca4 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1604,7 +1604,7 @@ static inline void pci_mmcfg_early_init(void) { } static inline void pci_mmcfg_late_init(void) { } #endif -int pci_ext_cfg_avail(struct pci_dev *dev); +int pci_ext_cfg_avail(void); void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar); -- cgit v1.2.3 From 0133370f93eae5ed3c0f16d9da2b7add7dda6076 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 2 Nov 2012 13:44:46 +0530 Subject: drivers: bus: ocp2scp: add pdata support ocp2scp was not having pdata support which makes *musb* fail for non-dt boot in OMAP platform. The pdata will have information about the devices that is connected to ocp2scp. ocp2scp driver will now make use of this information to create the devices that is attached to ocp2scp. This is needed to fix MUSB regression caused by commit c9e4412a (arm: omap: phy: remove unused functions from omap-phy-internal.c) Signed-off-by: Kishon Vijay Abraham I Acked-by: Felipe Balbi [tony@atomide.com: updated comments for regression info] Signed-off-by: Tony Lindgren --- include/linux/platform_data/omap_ocp2scp.h | 31 ++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 include/linux/platform_data/omap_ocp2scp.h (limited to 'include/linux') diff --git a/include/linux/platform_data/omap_ocp2scp.h b/include/linux/platform_data/omap_ocp2scp.h new file mode 100644 index 000000000000..5c6c3939355f --- /dev/null +++ b/include/linux/platform_data/omap_ocp2scp.h @@ -0,0 +1,31 @@ +/* + * omap_ocp2scp.h -- ocp2scp header file + * + * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Author: Kishon Vijay Abraham I + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __DRIVERS_OMAP_OCP2SCP_H +#define __DRIVERS_OMAP_OCP2SCP_H + +struct omap_ocp2scp_dev { + const char *drv_name; + struct resource *res; +}; + +struct omap_ocp2scp_platform_data { + int dev_cnt; + struct omap_ocp2scp_dev **devices; +}; +#endif /* __DRIVERS_OMAP_OCP2SCP_H */ -- cgit v1.2.3 From d676188e44680c2f2eb114a24b3b32e56165f079 Mon Sep 17 00:00:00 2001 From: Seungwon Jeon Date: Fri, 28 Sep 2012 14:21:59 +0900 Subject: mmc: dw_mmc: convert the variable type of irq Even though platform_get_irq returns error, 'host->irq' always has an unsigned value. Less-than-zero comparison of an unsigned value is never true. Type of 'unsigned int' will be changed for 'int'. Signed-off-by: Seungwon Jeon Acked-by: Will Newton Signed-off-by: Chris Ball --- include/linux/mmc/dw_mmc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h index 7c6a1139d8fa..31416760723c 100644 --- a/include/linux/mmc/dw_mmc.h +++ b/include/linux/mmc/dw_mmc.h @@ -186,7 +186,7 @@ struct dw_mci { struct regulator *vmmc; /* Power regulator */ unsigned long irq_flags; /* IRQ flags */ - unsigned int irq; + int irq; }; /* DMA ops for Internal/External DMAC interface */ -- cgit v1.2.3 From 63ef5d8c28b2a944f104d854254941e7375c85a3 Mon Sep 17 00:00:00 2001 From: Jerry Huang Date: Thu, 25 Oct 2012 13:47:19 +0800 Subject: mmc: sdhci-of-esdhc: disable CMD23 for some Freescale SoCs CMD23 causes lots of errors in kernel on some freescale SoCs (P1020, P1021, P1022, P1024, P1025 and P4080) when MMC card used, which is because these controllers does not support CMD23, even on the SoCs which declares CMD23 is supported. Therefore, we'll not use CMD23. Signed-off-by: Jerry Huang Signed-off-by: Shaohui Xie Acked-by: Anton Vorontsov Signed-off-by: Chris Ball --- include/linux/mmc/sdhci.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h index fa8529a859b8..1edcb4dad8c4 100644 --- a/include/linux/mmc/sdhci.h +++ b/include/linux/mmc/sdhci.h @@ -91,6 +91,7 @@ struct sdhci_host { unsigned int quirks2; /* More deviations from spec. */ #define SDHCI_QUIRK2_HOST_OFF_CARD_ON (1<<0) +#define SDHCI_QUIRK2_HOST_NO_CMD23 (1<<1) int irq; /* Device IRQ */ void __iomem *ioaddr; /* Mapped address */ -- cgit v1.2.3 From 8e2b36ea6e3abc613cbbdb41692fbd2f9ee18996 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 6 Nov 2012 22:55:31 +0100 Subject: mmc: dw_mmc: constify dw_mci_idmac_ops in exynos back-end The of_device_id match data is now marked as const and must not be modified. This changes the dw_mmc to mark all pointers passing the dw_mci_drv_data or dw_mci_dma_ops structures as const, and also marks the static definitions as const. drivers/mmc/host/dw_mmc-exynos.c: In function 'dw_mci_exynos_probe': drivers/mmc/host/dw_mmc-exynos.c:234:11: warning: assignment discards 'const' qualifier from pointer target type [enabled by default] Signed-off-by: Arnd Bergmann Cc: Thomas Abraham Cc: Will Newton Signed-off-by: Chris Ball --- include/linux/mmc/dw_mmc.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h index 31416760723c..96531664a061 100644 --- a/include/linux/mmc/dw_mmc.h +++ b/include/linux/mmc/dw_mmc.h @@ -137,7 +137,7 @@ struct dw_mci { dma_addr_t sg_dma; void *sg_cpu; - struct dw_mci_dma_ops *dma_ops; + const struct dw_mci_dma_ops *dma_ops; #ifdef CONFIG_MMC_DW_IDMAC unsigned int ring_size; #else @@ -162,7 +162,7 @@ struct dw_mci { u16 data_offset; struct device *dev; struct dw_mci_board *pdata; - struct dw_mci_drv_data *drv_data; + const struct dw_mci_drv_data *drv_data; void *priv; struct clk *biu_clk; struct clk *ciu_clk; -- cgit v1.2.3 From 216b6cbdcbd86b1db0754d58886b466ae31f5a63 Mon Sep 17 00:00:00 2001 From: Namjae Jeon Date: Wed, 29 Aug 2012 10:10:10 -0400 Subject: exportfs: add FILEID_INVALID to indicate invalid fid_type This commit adds FILEID_INVALID = 0xff in fid_type to indicate invalid fid_type It avoids using magic number 255 Signed-off-by: Namjae Jeon Signed-off-by: Vivek Trivedi Signed-off-by: J. Bruce Fields --- include/linux/exportfs.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/exportfs.h b/include/linux/exportfs.h index 12291a7ee275..0e1452546300 100644 --- a/include/linux/exportfs.h +++ b/include/linux/exportfs.h @@ -83,6 +83,11 @@ enum fid_type { * 64 bit parent inode number. */ FILEID_NILFS_WITH_PARENT = 0x62, + + /* + * Filesystems must not use 0xff file ID. + */ + FILEID_INVALID = 0xff, }; struct fid { -- cgit v1.2.3 From 9d626eccb1de90a310f3fb9bc5e8803706be1a95 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Tue, 30 Oct 2012 20:06:55 -0700 Subject: sh: clkfwk: add sh_clk_fsidiv_register() This patch adds sh_clk_fsidiv_register() to share FSI-DIV clock code Signed-off-by: Kuninori Morimoto Acked-by: Paul Mundt Signed-off-by: Simon Horman --- include/linux/sh_clk.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sh_clk.h b/include/linux/sh_clk.h index 50910913b268..60c72395ec6b 100644 --- a/include/linux/sh_clk.h +++ b/include/linux/sh_clk.h @@ -199,4 +199,13 @@ int sh_clk_div6_reparent_register(struct clk *clks, int nr); #define CLKDEV_DEV_ID(_id, _clk) { .dev_id = _id, .clk = _clk } #define CLKDEV_ICK_ID(_cid, _did, _clk) { .con_id = _cid, .dev_id = _did, .clk = _clk } +/* .enable_reg will be updated to .mapping on sh_clk_fsidiv_register() */ +#define SH_CLK_FSIDIV(_reg, _parent) \ +{ \ + .enable_reg = (void __iomem *)_reg, \ + .parent = _parent, \ +} + +int sh_clk_fsidiv_register(struct clk *clks, int nr); + #endif /* __SH_CLOCK_H */ -- cgit v1.2.3 From ada8a8a13b13a2749818524a7949935f68d2b3eb Mon Sep 17 00:00:00 2001 From: Wei WANG Date: Mon, 29 Oct 2012 13:49:33 +0800 Subject: mfd: Add realtek pcie card reader driver Realtek PCI-E card reader driver adapts requests from upper-level sdmmc/memstick layer to the real physical card reader. Signed-off-by: Wei WANG Reviewed-by: Arnd Bergmann Tested-by: Borislav Petkov Signed-off-by: Samuel Ortiz --- include/linux/mfd/rtsx_common.h | 48 +++ include/linux/mfd/rtsx_pci.h | 794 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 842 insertions(+) create mode 100644 include/linux/mfd/rtsx_common.h create mode 100644 include/linux/mfd/rtsx_pci.h (limited to 'include/linux') diff --git a/include/linux/mfd/rtsx_common.h b/include/linux/mfd/rtsx_common.h new file mode 100644 index 000000000000..a8d393e3066b --- /dev/null +++ b/include/linux/mfd/rtsx_common.h @@ -0,0 +1,48 @@ +/* Driver for Realtek driver-based card reader + * + * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + * + * Author: + * Wei WANG + * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China + */ + +#ifndef __RTSX_COMMON_H +#define __RTSX_COMMON_H + +#define DRV_NAME_RTSX_PCI "rtsx_pci" +#define DRV_NAME_RTSX_PCI_SDMMC "rtsx_pci_sdmmc" +#define DRV_NAME_RTSX_PCI_MS "rtsx_pci_ms" + +#define RTSX_REG_PAIR(addr, val) (((u32)(addr) << 16) | (u8)(val)) + +#define RTSX_SSC_DEPTH_4M 0x01 +#define RTSX_SSC_DEPTH_2M 0x02 +#define RTSX_SSC_DEPTH_1M 0x03 +#define RTSX_SSC_DEPTH_500K 0x04 +#define RTSX_SSC_DEPTH_250K 0x05 + +#define RTSX_SD_CARD 0 +#define RTSX_MS_CARD 1 + +struct platform_device; + +struct rtsx_slot { + struct platform_device *p_dev; + void (*card_event)(struct platform_device *p_dev); +}; + +#endif diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h new file mode 100644 index 000000000000..060b721fcbfb --- /dev/null +++ b/include/linux/mfd/rtsx_pci.h @@ -0,0 +1,794 @@ +/* Driver for Realtek PCI-Express card reader + * + * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + * + * Author: + * Wei WANG + * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China + */ + +#ifndef __RTSX_PCI_H +#define __RTSX_PCI_H + +#include +#include + +#include "rtsx_common.h" + +#define MAX_RW_REG_CNT 1024 + +/* PCI Operation Register Address */ +#define RTSX_HCBAR 0x00 +#define RTSX_HCBCTLR 0x04 +#define RTSX_HDBAR 0x08 +#define RTSX_HDBCTLR 0x0C +#define RTSX_HAIMR 0x10 +#define RTSX_BIPR 0x14 +#define RTSX_BIER 0x18 + +/* Host command buffer control register */ +#define STOP_CMD (0x01 << 28) + +/* Host data buffer control register */ +#define SDMA_MODE 0x00 +#define ADMA_MODE (0x02 << 26) +#define STOP_DMA (0x01 << 28) +#define TRIG_DMA (0x01 << 31) + +/* Host access internal memory register */ +#define HAIMR_TRANS_START (0x01 << 31) +#define HAIMR_READ 0x00 +#define HAIMR_WRITE (0x01 << 30) +#define HAIMR_READ_START (HAIMR_TRANS_START | HAIMR_READ) +#define HAIMR_WRITE_START (HAIMR_TRANS_START | HAIMR_WRITE) +#define HAIMR_TRANS_END (HAIMR_TRANS_START) + +/* Bus interrupt pending register */ +#define CMD_DONE_INT (1 << 31) +#define DATA_DONE_INT (1 << 30) +#define TRANS_OK_INT (1 << 29) +#define TRANS_FAIL_INT (1 << 28) +#define XD_INT (1 << 27) +#define MS_INT (1 << 26) +#define SD_INT (1 << 25) +#define GPIO0_INT (1 << 24) +#define OC_INT (1 << 23) +#define SD_WRITE_PROTECT (1 << 19) +#define XD_EXIST (1 << 18) +#define MS_EXIST (1 << 17) +#define SD_EXIST (1 << 16) +#define DELINK_INT GPIO0_INT +#define MS_OC_INT (1 << 23) +#define SD_OC_INT (1 << 22) + +#define CARD_INT (XD_INT | MS_INT | SD_INT) +#define NEED_COMPLETE_INT (DATA_DONE_INT | TRANS_OK_INT | TRANS_FAIL_INT) +#define RTSX_INT (CMD_DONE_INT | NEED_COMPLETE_INT | \ + CARD_INT | GPIO0_INT | OC_INT) + +#define CARD_EXIST (XD_EXIST | MS_EXIST | SD_EXIST) + +/* Bus interrupt enable register */ +#define CMD_DONE_INT_EN (1 << 31) +#define DATA_DONE_INT_EN (1 << 30) +#define TRANS_OK_INT_EN (1 << 29) +#define TRANS_FAIL_INT_EN (1 << 28) +#define XD_INT_EN (1 << 27) +#define MS_INT_EN (1 << 26) +#define SD_INT_EN (1 << 25) +#define GPIO0_INT_EN (1 << 24) +#define OC_INT_EN (1 << 23) +#define DELINK_INT_EN GPIO0_INT_EN +#define MS_OC_INT_EN (1 << 23) +#define SD_OC_INT_EN (1 << 22) + +#define READ_REG_CMD 0 +#define WRITE_REG_CMD 1 +#define CHECK_REG_CMD 2 + +/* + * macros for easy use + */ +#define rtsx_pci_writel(pcr, reg, value) \ + iowrite32(value, (pcr)->remap_addr + reg) +#define rtsx_pci_readl(pcr, reg) \ + ioread32((pcr)->remap_addr + reg) +#define rtsx_pci_writew(pcr, reg, value) \ + iowrite16(value, (pcr)->remap_addr + reg) +#define rtsx_pci_readw(pcr, reg) \ + ioread16((pcr)->remap_addr + reg) +#define rtsx_pci_writeb(pcr, reg, value) \ + iowrite8(value, (pcr)->remap_addr + reg) +#define rtsx_pci_readb(pcr, reg) \ + ioread8((pcr)->remap_addr + reg) + +#define rtsx_pci_read_config_byte(pcr, where, val) \ + pci_read_config_byte((pcr)->pci, where, val) + +#define rtsx_pci_write_config_byte(pcr, where, val) \ + pci_write_config_byte((pcr)->pci, where, val) + +#define rtsx_pci_read_config_dword(pcr, where, val) \ + pci_read_config_dword((pcr)->pci, where, val) + +#define rtsx_pci_write_config_dword(pcr, where, val) \ + pci_write_config_dword((pcr)->pci, where, val) + +#define STATE_TRANS_NONE 0 +#define STATE_TRANS_CMD 1 +#define STATE_TRANS_BUF 2 +#define STATE_TRANS_SG 3 + +#define TRANS_NOT_READY 0 +#define TRANS_RESULT_OK 1 +#define TRANS_RESULT_FAIL 2 +#define TRANS_NO_DEVICE 3 + +#define RTSX_RESV_BUF_LEN 4096 +#define HOST_CMDS_BUF_LEN 1024 +#define HOST_SG_TBL_BUF_LEN (RTSX_RESV_BUF_LEN - HOST_CMDS_BUF_LEN) +#define HOST_SG_TBL_ITEMS (HOST_SG_TBL_BUF_LEN / 8) +#define MAX_SG_ITEM_LEN 0x80000 + +#define HOST_TO_DEVICE 0 +#define DEVICE_TO_HOST 1 + +#define MAX_PHASE 31 +#define RX_TUNING_CNT 3 + +/* SG descriptor */ +#define SG_INT 0x04 +#define SG_END 0x02 +#define SG_VALID 0x01 + +#define SG_NO_OP 0x00 +#define SG_TRANS_DATA (0x02 << 4) +#define SG_LINK_DESC (0x03 << 4) + +/* SD bank voltage */ +#define SD_IO_3V3 0 +#define SD_IO_1V8 1 + + +/* Card Clock Enable Register */ +#define SD_CLK_EN 0x04 +#define MS_CLK_EN 0x08 + +/* Card Select Register */ +#define SD_MOD_SEL 2 +#define MS_MOD_SEL 3 + +/* Card Output Enable Register */ +#define SD_OUTPUT_EN 0x04 +#define MS_OUTPUT_EN 0x08 + +/* CARD_SHARE_MODE */ +#define CARD_SHARE_MASK 0x0F +#define CARD_SHARE_MULTI_LUN 0x00 +#define CARD_SHARE_NORMAL 0x00 +#define CARD_SHARE_48_SD 0x04 +#define CARD_SHARE_48_MS 0x08 +/* CARD_SHARE_MODE for barossa */ +#define CARD_SHARE_BAROSSA_SD 0x01 +#define CARD_SHARE_BAROSSA_MS 0x02 + +/* SD30_DRIVE_SEL */ +#define DRIVER_TYPE_A 0x05 +#define DRIVER_TYPE_B 0x03 +#define DRIVER_TYPE_C 0x02 +#define DRIVER_TYPE_D 0x01 + +/* FPDCTL */ +#define SSC_POWER_DOWN 0x01 +#define SD_OC_POWER_DOWN 0x02 +#define ALL_POWER_DOWN 0x07 +#define OC_POWER_DOWN 0x06 + +/* CLK_CTL */ +#define CHANGE_CLK 0x01 + +/* LDO_CTL */ +#define BPP_LDO_POWB 0x03 +#define BPP_LDO_ON 0x00 +#define BPP_LDO_SUSPEND 0x02 +#define BPP_LDO_OFF 0x03 + +/* CD_PAD_CTL */ +#define CD_DISABLE_MASK 0x07 +#define MS_CD_DISABLE 0x04 +#define SD_CD_DISABLE 0x02 +#define XD_CD_DISABLE 0x01 +#define CD_DISABLE 0x07 +#define CD_ENABLE 0x00 +#define MS_CD_EN_ONLY 0x03 +#define SD_CD_EN_ONLY 0x05 +#define XD_CD_EN_ONLY 0x06 +#define FORCE_CD_LOW_MASK 0x38 +#define FORCE_CD_XD_LOW 0x08 +#define FORCE_CD_SD_LOW 0x10 +#define FORCE_CD_MS_LOW 0x20 +#define CD_AUTO_DISABLE 0x40 + +/* SD_STAT1 */ +#define SD_CRC7_ERR 0x80 +#define SD_CRC16_ERR 0x40 +#define SD_CRC_WRITE_ERR 0x20 +#define SD_CRC_WRITE_ERR_MASK 0x1C +#define GET_CRC_TIME_OUT 0x02 +#define SD_TUNING_COMPARE_ERR 0x01 + +/* SD_STAT2 */ +#define SD_RSP_80CLK_TIMEOUT 0x01 + +/* SD_BUS_STAT */ +#define SD_CLK_TOGGLE_EN 0x80 +#define SD_CLK_FORCE_STOP 0x40 +#define SD_DAT3_STATUS 0x10 +#define SD_DAT2_STATUS 0x08 +#define SD_DAT1_STATUS 0x04 +#define SD_DAT0_STATUS 0x02 +#define SD_CMD_STATUS 0x01 + +/* SD_PAD_CTL */ +#define SD_IO_USING_1V8 0x80 +#define SD_IO_USING_3V3 0x7F +#define TYPE_A_DRIVING 0x00 +#define TYPE_B_DRIVING 0x01 +#define TYPE_C_DRIVING 0x02 +#define TYPE_D_DRIVING 0x03 + +/* SD_SAMPLE_POINT_CTL */ +#define DDR_FIX_RX_DAT 0x00 +#define DDR_VAR_RX_DAT 0x80 +#define DDR_FIX_RX_DAT_EDGE 0x00 +#define DDR_FIX_RX_DAT_14_DELAY 0x40 +#define DDR_FIX_RX_CMD 0x00 +#define DDR_VAR_RX_CMD 0x20 +#define DDR_FIX_RX_CMD_POS_EDGE 0x00 +#define DDR_FIX_RX_CMD_14_DELAY 0x10 +#define SD20_RX_POS_EDGE 0x00 +#define SD20_RX_14_DELAY 0x08 +#define SD20_RX_SEL_MASK 0x08 + +/* SD_PUSH_POINT_CTL */ +#define DDR_FIX_TX_CMD_DAT 0x00 +#define DDR_VAR_TX_CMD_DAT 0x80 +#define DDR_FIX_TX_DAT_14_TSU 0x00 +#define DDR_FIX_TX_DAT_12_TSU 0x40 +#define DDR_FIX_TX_CMD_NEG_EDGE 0x00 +#define DDR_FIX_TX_CMD_14_AHEAD 0x20 +#define SD20_TX_NEG_EDGE 0x00 +#define SD20_TX_14_AHEAD 0x10 +#define SD20_TX_SEL_MASK 0x10 +#define DDR_VAR_SDCLK_POL_SWAP 0x01 + +/* SD_TRANSFER */ +#define SD_TRANSFER_START 0x80 +#define SD_TRANSFER_END 0x40 +#define SD_STAT_IDLE 0x20 +#define SD_TRANSFER_ERR 0x10 +/* SD Transfer Mode definition */ +#define SD_TM_NORMAL_WRITE 0x00 +#define SD_TM_AUTO_WRITE_3 0x01 +#define SD_TM_AUTO_WRITE_4 0x02 +#define SD_TM_AUTO_READ_3 0x05 +#define SD_TM_AUTO_READ_4 0x06 +#define SD_TM_CMD_RSP 0x08 +#define SD_TM_AUTO_WRITE_1 0x09 +#define SD_TM_AUTO_WRITE_2 0x0A +#define SD_TM_NORMAL_READ 0x0C +#define SD_TM_AUTO_READ_1 0x0D +#define SD_TM_AUTO_READ_2 0x0E +#define SD_TM_AUTO_TUNING 0x0F + +/* SD_VPTX_CTL / SD_VPRX_CTL */ +#define PHASE_CHANGE 0x80 +#define PHASE_NOT_RESET 0x40 + +/* SD_DCMPS_TX_CTL / SD_DCMPS_RX_CTL */ +#define DCMPS_CHANGE 0x80 +#define DCMPS_CHANGE_DONE 0x40 +#define DCMPS_ERROR 0x20 +#define DCMPS_CURRENT_PHASE 0x1F + +/* SD Configure 1 Register */ +#define SD_CLK_DIVIDE_0 0x00 +#define SD_CLK_DIVIDE_256 0xC0 +#define SD_CLK_DIVIDE_128 0x80 +#define SD_BUS_WIDTH_1BIT 0x00 +#define SD_BUS_WIDTH_4BIT 0x01 +#define SD_BUS_WIDTH_8BIT 0x02 +#define SD_ASYNC_FIFO_NOT_RST 0x10 +#define SD_20_MODE 0x00 +#define SD_DDR_MODE 0x04 +#define SD_30_MODE 0x08 + +#define SD_CLK_DIVIDE_MASK 0xC0 + +/* SD_CMD_STATE */ +#define SD_CMD_IDLE 0x80 + +/* SD_DATA_STATE */ +#define SD_DATA_IDLE 0x80 + +/* DCM_DRP_CTL */ +#define DCM_RESET 0x08 +#define DCM_LOCKED 0x04 +#define DCM_208M 0x00 +#define DCM_TX 0x01 +#define DCM_RX 0x02 + +/* DCM_DRP_TRIG */ +#define DRP_START 0x80 +#define DRP_DONE 0x40 + +/* DCM_DRP_CFG */ +#define DRP_WRITE 0x80 +#define DRP_READ 0x00 +#define DCM_WRITE_ADDRESS_50 0x50 +#define DCM_WRITE_ADDRESS_51 0x51 +#define DCM_READ_ADDRESS_00 0x00 +#define DCM_READ_ADDRESS_51 0x51 + +/* IRQSTAT0 */ +#define DMA_DONE_INT 0x80 +#define SUSPEND_INT 0x40 +#define LINK_RDY_INT 0x20 +#define LINK_DOWN_INT 0x10 + +/* DMACTL */ +#define DMA_RST 0x80 +#define DMA_BUSY 0x04 +#define DMA_DIR_TO_CARD 0x00 +#define DMA_DIR_FROM_CARD 0x02 +#define DMA_EN 0x01 +#define DMA_128 (0 << 4) +#define DMA_256 (1 << 4) +#define DMA_512 (2 << 4) +#define DMA_1024 (3 << 4) +#define DMA_PACK_SIZE_MASK 0x30 + +/* SSC_CTL1 */ +#define SSC_RSTB 0x80 +#define SSC_8X_EN 0x40 +#define SSC_FIX_FRAC 0x20 +#define SSC_SEL_1M 0x00 +#define SSC_SEL_2M 0x08 +#define SSC_SEL_4M 0x10 +#define SSC_SEL_8M 0x18 + +/* SSC_CTL2 */ +#define SSC_DEPTH_MASK 0x07 +#define SSC_DEPTH_DISALBE 0x00 +#define SSC_DEPTH_4M 0x01 +#define SSC_DEPTH_2M 0x02 +#define SSC_DEPTH_1M 0x03 +#define SSC_DEPTH_500K 0x04 +#define SSC_DEPTH_250K 0x05 + +/* System Clock Control Register */ +#define CLK_LOW_FREQ 0x01 + +/* System Clock Divider Register */ +#define CLK_DIV_1 0x01 +#define CLK_DIV_2 0x02 +#define CLK_DIV_4 0x03 +#define CLK_DIV_8 0x04 + +/* MS_CFG */ +#define SAMPLE_TIME_RISING 0x00 +#define SAMPLE_TIME_FALLING 0x80 +#define PUSH_TIME_DEFAULT 0x00 +#define PUSH_TIME_ODD 0x40 +#define NO_EXTEND_TOGGLE 0x00 +#define EXTEND_TOGGLE_CHK 0x20 +#define MS_BUS_WIDTH_1 0x00 +#define MS_BUS_WIDTH_4 0x10 +#define MS_BUS_WIDTH_8 0x18 +#define MS_2K_SECTOR_MODE 0x04 +#define MS_512_SECTOR_MODE 0x00 +#define MS_TOGGLE_TIMEOUT_EN 0x00 +#define MS_TOGGLE_TIMEOUT_DISEN 0x01 +#define MS_NO_CHECK_INT 0x02 + +/* MS_TRANS_CFG */ +#define WAIT_INT 0x80 +#define NO_WAIT_INT 0x00 +#define NO_AUTO_READ_INT_REG 0x00 +#define AUTO_READ_INT_REG 0x40 +#define MS_CRC16_ERR 0x20 +#define MS_RDY_TIMEOUT 0x10 +#define MS_INT_CMDNK 0x08 +#define MS_INT_BREQ 0x04 +#define MS_INT_ERR 0x02 +#define MS_INT_CED 0x01 + +/* MS_TRANSFER */ +#define MS_TRANSFER_START 0x80 +#define MS_TRANSFER_END 0x40 +#define MS_TRANSFER_ERR 0x20 +#define MS_BS_STATE 0x10 +#define MS_TM_READ_BYTES 0x00 +#define MS_TM_NORMAL_READ 0x01 +#define MS_TM_WRITE_BYTES 0x04 +#define MS_TM_NORMAL_WRITE 0x05 +#define MS_TM_AUTO_READ 0x08 +#define MS_TM_AUTO_WRITE 0x0C + +/* SD Configure 2 Register */ +#define SD_CALCULATE_CRC7 0x00 +#define SD_NO_CALCULATE_CRC7 0x80 +#define SD_CHECK_CRC16 0x00 +#define SD_NO_CHECK_CRC16 0x40 +#define SD_NO_CHECK_WAIT_CRC_TO 0x20 +#define SD_WAIT_BUSY_END 0x08 +#define SD_NO_WAIT_BUSY_END 0x00 +#define SD_CHECK_CRC7 0x00 +#define SD_NO_CHECK_CRC7 0x04 +#define SD_RSP_LEN_0 0x00 +#define SD_RSP_LEN_6 0x01 +#define SD_RSP_LEN_17 0x02 +/* SD/MMC Response Type Definition */ +#define SD_RSP_TYPE_R0 0x04 +#define SD_RSP_TYPE_R1 0x01 +#define SD_RSP_TYPE_R1b 0x09 +#define SD_RSP_TYPE_R2 0x02 +#define SD_RSP_TYPE_R3 0x05 +#define SD_RSP_TYPE_R4 0x05 +#define SD_RSP_TYPE_R5 0x01 +#define SD_RSP_TYPE_R6 0x01 +#define SD_RSP_TYPE_R7 0x01 + +/* SD_CONFIURE3 */ +#define SD_RSP_80CLK_TIMEOUT_EN 0x01 + +/* Card Transfer Reset Register */ +#define SPI_STOP 0x01 +#define XD_STOP 0x02 +#define SD_STOP 0x04 +#define MS_STOP 0x08 +#define SPI_CLR_ERR 0x10 +#define XD_CLR_ERR 0x20 +#define SD_CLR_ERR 0x40 +#define MS_CLR_ERR 0x80 + +/* Card Data Source Register */ +#define PINGPONG_BUFFER 0x01 +#define RING_BUFFER 0x00 + +/* Card Power Control Register */ +#define PMOS_STRG_MASK 0x10 +#define PMOS_STRG_800mA 0x10 +#define PMOS_STRG_400mA 0x00 +#define SD_POWER_OFF 0x03 +#define SD_PARTIAL_POWER_ON 0x01 +#define SD_POWER_ON 0x00 +#define SD_POWER_MASK 0x03 +#define MS_POWER_OFF 0x0C +#define MS_PARTIAL_POWER_ON 0x04 +#define MS_POWER_ON 0x00 +#define MS_POWER_MASK 0x0C +#define BPP_POWER_OFF 0x0F +#define BPP_POWER_5_PERCENT_ON 0x0E +#define BPP_POWER_10_PERCENT_ON 0x0C +#define BPP_POWER_15_PERCENT_ON 0x08 +#define BPP_POWER_ON 0x00 +#define BPP_POWER_MASK 0x0F + +/* PWR_GATE_CTRL */ +#define PWR_GATE_EN 0x01 +#define LDO3318_PWR_MASK 0x06 +#define LDO_ON 0x00 +#define LDO_SUSPEND 0x04 +#define LDO_OFF 0x06 + +/* CARD_CLK_SOURCE */ +#define CRC_FIX_CLK (0x00 << 0) +#define CRC_VAR_CLK0 (0x01 << 0) +#define CRC_VAR_CLK1 (0x02 << 0) +#define SD30_FIX_CLK (0x00 << 2) +#define SD30_VAR_CLK0 (0x01 << 2) +#define SD30_VAR_CLK1 (0x02 << 2) +#define SAMPLE_FIX_CLK (0x00 << 4) +#define SAMPLE_VAR_CLK0 (0x01 << 4) +#define SAMPLE_VAR_CLK1 (0x02 << 4) + +#define MS_CFG 0xFD40 +#define MS_TPC 0xFD41 +#define MS_TRANS_CFG 0xFD42 +#define MS_TRANSFER 0xFD43 +#define MS_INT_REG 0xFD44 +#define MS_BYTE_CNT 0xFD45 +#define MS_SECTOR_CNT_L 0xFD46 +#define MS_SECTOR_CNT_H 0xFD47 +#define MS_DBUS_H 0xFD48 + +#define SD_CFG1 0xFDA0 +#define SD_CFG2 0xFDA1 +#define SD_CFG3 0xFDA2 +#define SD_STAT1 0xFDA3 +#define SD_STAT2 0xFDA4 +#define SD_BUS_STAT 0xFDA5 +#define SD_PAD_CTL 0xFDA6 +#define SD_SAMPLE_POINT_CTL 0xFDA7 +#define SD_PUSH_POINT_CTL 0xFDA8 +#define SD_CMD0 0xFDA9 +#define SD_CMD1 0xFDAA +#define SD_CMD2 0xFDAB +#define SD_CMD3 0xFDAC +#define SD_CMD4 0xFDAD +#define SD_CMD5 0xFDAE +#define SD_BYTE_CNT_L 0xFDAF +#define SD_BYTE_CNT_H 0xFDB0 +#define SD_BLOCK_CNT_L 0xFDB1 +#define SD_BLOCK_CNT_H 0xFDB2 +#define SD_TRANSFER 0xFDB3 +#define SD_CMD_STATE 0xFDB5 +#define SD_DATA_STATE 0xFDB6 + +#define SRCTL 0xFC13 + +#define DCM_DRP_CTL 0xFC23 +#define DCM_DRP_TRIG 0xFC24 +#define DCM_DRP_CFG 0xFC25 +#define DCM_DRP_WR_DATA_L 0xFC26 +#define DCM_DRP_WR_DATA_H 0xFC27 +#define DCM_DRP_RD_DATA_L 0xFC28 +#define DCM_DRP_RD_DATA_H 0xFC29 +#define SD_VPCLK0_CTL 0xFC2A +#define SD_VPCLK1_CTL 0xFC2B +#define SD_DCMPS0_CTL 0xFC2C +#define SD_DCMPS1_CTL 0xFC2D +#define SD_VPTX_CTL SD_VPCLK0_CTL +#define SD_VPRX_CTL SD_VPCLK1_CTL +#define SD_DCMPS_TX_CTL SD_DCMPS0_CTL +#define SD_DCMPS_RX_CTL SD_DCMPS1_CTL +#define CARD_CLK_SOURCE 0xFC2E + +#define CARD_PWR_CTL 0xFD50 +#define CARD_CLK_SWITCH 0xFD51 +#define CARD_SHARE_MODE 0xFD52 +#define CARD_DRIVE_SEL 0xFD53 +#define CARD_STOP 0xFD54 +#define CARD_OE 0xFD55 +#define CARD_AUTO_BLINK 0xFD56 +#define CARD_GPIO_DIR 0xFD57 +#define CARD_GPIO 0xFD58 +#define CARD_DATA_SOURCE 0xFD5B +#define CARD_SELECT 0xFD5C +#define SD30_DRIVE_SEL 0xFD5E +#define CARD_CLK_EN 0xFD69 +#define SDIO_CTRL 0xFD6B +#define CD_PAD_CTL 0xFD73 + +#define FPDCTL 0xFC00 +#define PDINFO 0xFC01 + +#define CLK_CTL 0xFC02 +#define CLK_DIV 0xFC03 +#define CLK_SEL 0xFC04 + +#define SSC_DIV_N_0 0xFC0F +#define SSC_DIV_N_1 0xFC10 +#define SSC_CTL1 0xFC11 +#define SSC_CTL2 0xFC12 + +#define RCCTL 0xFC14 + +#define FPGA_PULL_CTL 0xFC1D +#define OLT_LED_CTL 0xFC1E +#define GPIO_CTL 0xFC1F + +#define LDO_CTL 0xFC1E +#define SYS_VER 0xFC32 + +#define CARD_PULL_CTL1 0xFD60 +#define CARD_PULL_CTL2 0xFD61 +#define CARD_PULL_CTL3 0xFD62 +#define CARD_PULL_CTL4 0xFD63 +#define CARD_PULL_CTL5 0xFD64 +#define CARD_PULL_CTL6 0xFD65 + +/* PCI Express Related Registers */ +#define IRQEN0 0xFE20 +#define IRQSTAT0 0xFE21 +#define IRQEN1 0xFE22 +#define IRQSTAT1 0xFE23 +#define TLPRIEN 0xFE24 +#define TLPRISTAT 0xFE25 +#define TLPTIEN 0xFE26 +#define TLPTISTAT 0xFE27 +#define DMATC0 0xFE28 +#define DMATC1 0xFE29 +#define DMATC2 0xFE2A +#define DMATC3 0xFE2B +#define DMACTL 0xFE2C +#define BCTL 0xFE2D +#define RBBC0 0xFE2E +#define RBBC1 0xFE2F +#define RBDAT 0xFE30 +#define RBCTL 0xFE34 +#define CFGADDR0 0xFE35 +#define CFGADDR1 0xFE36 +#define CFGDATA0 0xFE37 +#define CFGDATA1 0xFE38 +#define CFGDATA2 0xFE39 +#define CFGDATA3 0xFE3A +#define CFGRWCTL 0xFE3B +#define PHYRWCTL 0xFE3C +#define PHYDATA0 0xFE3D +#define PHYDATA1 0xFE3E +#define PHYADDR 0xFE3F +#define MSGRXDATA0 0xFE40 +#define MSGRXDATA1 0xFE41 +#define MSGRXDATA2 0xFE42 +#define MSGRXDATA3 0xFE43 +#define MSGTXDATA0 0xFE44 +#define MSGTXDATA1 0xFE45 +#define MSGTXDATA2 0xFE46 +#define MSGTXDATA3 0xFE47 +#define MSGTXCTL 0xFE48 +#define PETXCFG 0xFE49 + +#define CDRESUMECTL 0xFE52 +#define WAKE_SEL_CTL 0xFE54 +#define PME_FORCE_CTL 0xFE56 +#define ASPM_FORCE_CTL 0xFE57 +#define PM_CLK_FORCE_CTL 0xFE58 +#define PERST_GLITCH_WIDTH 0xFE5C +#define CHANGE_LINK_STATE 0xFE5B +#define RESET_LOAD_REG 0xFE5E +#define EFUSE_CONTENT 0xFE5F +#define HOST_SLEEP_STATE 0xFE60 +#define SDIO_CFG 0xFE70 + +#define NFTS_TX_CTRL 0xFE72 + +#define PWR_GATE_CTRL 0xFE75 +#define PWD_SUSPEND_EN 0xFE76 +#define LDO_PWR_SEL 0xFE78 + +#define DUMMY_REG_RESET_0 0xFE90 + +/* Memory mapping */ +#define SRAM_BASE 0xE600 +#define RBUF_BASE 0xF400 +#define PPBUF_BASE1 0xF800 +#define PPBUF_BASE2 0xFA00 +#define IMAGE_FLAG_ADDR0 0xCE80 +#define IMAGE_FLAG_ADDR1 0xCE81 + +#define rtsx_pci_init_cmd(pcr) ((pcr)->ci = 0) + +struct rtsx_pcr; + +struct pcr_handle { + struct rtsx_pcr *pcr; +}; + +struct pcr_ops { + int (*extra_init_hw)(struct rtsx_pcr *pcr); + int (*optimize_phy)(struct rtsx_pcr *pcr); + int (*turn_on_led)(struct rtsx_pcr *pcr); + int (*turn_off_led)(struct rtsx_pcr *pcr); + int (*enable_auto_blink)(struct rtsx_pcr *pcr); + int (*disable_auto_blink)(struct rtsx_pcr *pcr); + int (*card_power_on)(struct rtsx_pcr *pcr, int card); + int (*card_power_off)(struct rtsx_pcr *pcr, int card); + unsigned int (*cd_deglitch)(struct rtsx_pcr *pcr); +}; + +enum PDEV_STAT {PDEV_STAT_IDLE, PDEV_STAT_RUN}; + +struct rtsx_pcr { + struct pci_dev *pci; + unsigned int id; + + /* pci resources */ + unsigned long addr; + void __iomem *remap_addr; + int irq; + + /* host reserved buffer */ + void *rtsx_resv_buf; + dma_addr_t rtsx_resv_buf_addr; + + void *host_cmds_ptr; + dma_addr_t host_cmds_addr; + int ci; + + void *host_sg_tbl_ptr; + dma_addr_t host_sg_tbl_addr; + int sgi; + + u32 bier; + char trans_result; + + unsigned int card_inserted; + unsigned int card_removed; + + struct delayed_work carddet_work; + struct delayed_work idle_work; + + spinlock_t lock; + struct mutex pcr_mutex; + struct completion *done; + struct completion *finish_me; + + unsigned int cur_clock; + bool ms_pmos; + bool remove_pci; + bool msi_en; + +#define EXTRA_CAPS_SD_SDR50 (1 << 0) +#define EXTRA_CAPS_SD_SDR104 (1 << 1) +#define EXTRA_CAPS_SD_DDR50 (1 << 2) +#define EXTRA_CAPS_MMC_HSDDR (1 << 3) +#define EXTRA_CAPS_MMC_HS200 (1 << 4) +#define EXTRA_CAPS_MMC_8BIT (1 << 5) + u32 extra_caps; + +#define IC_VER_A 0 +#define IC_VER_B 1 +#define IC_VER_C 2 +#define IC_VER_D 3 + u8 ic_version; + + const u32 *sd_pull_ctl_enable_tbl; + const u32 *sd_pull_ctl_disable_tbl; + const u32 *ms_pull_ctl_enable_tbl; + const u32 *ms_pull_ctl_disable_tbl; + + const struct pcr_ops *ops; + enum PDEV_STAT state; + + int num_slots; + struct rtsx_slot *slots; +}; + +#define CHK_PCI_PID(pcr, pid) ((pcr)->pci->device == (pid)) +#define PCI_VID(pcr) ((pcr)->pci->vendor) +#define PCI_PID(pcr) ((pcr)->pci->device) + +void rtsx_pci_start_run(struct rtsx_pcr *pcr); +int rtsx_pci_write_register(struct rtsx_pcr *pcr, u16 addr, u8 mask, u8 data); +int rtsx_pci_read_register(struct rtsx_pcr *pcr, u16 addr, u8 *data); +int rtsx_pci_write_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 val); +int rtsx_pci_read_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 *val); +void rtsx_pci_stop_cmd(struct rtsx_pcr *pcr); +void rtsx_pci_add_cmd(struct rtsx_pcr *pcr, + u8 cmd_type, u16 reg_addr, u8 mask, u8 data); +void rtsx_pci_send_cmd_no_wait(struct rtsx_pcr *pcr); +int rtsx_pci_send_cmd(struct rtsx_pcr *pcr, int timeout); +int rtsx_pci_transfer_data(struct rtsx_pcr *pcr, struct scatterlist *sglist, + int num_sg, bool read, int timeout); +int rtsx_pci_read_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len); +int rtsx_pci_write_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len); +int rtsx_pci_card_pull_ctl_enable(struct rtsx_pcr *pcr, int card); +int rtsx_pci_card_pull_ctl_disable(struct rtsx_pcr *pcr, int card); +int rtsx_pci_switch_clock(struct rtsx_pcr *pcr, unsigned int card_clock, + u8 ssc_depth, bool initial_mode, bool double_clk, bool vpclk); +int rtsx_pci_card_power_on(struct rtsx_pcr *pcr, int card); +int rtsx_pci_card_power_off(struct rtsx_pcr *pcr, int card); +unsigned int rtsx_pci_card_exist(struct rtsx_pcr *pcr); +void rtsx_pci_complete_unfinished_transfer(struct rtsx_pcr *pcr); + +static inline u8 *rtsx_pci_get_cmd_data(struct rtsx_pcr *pcr) +{ + return (u8 *)(pcr->host_cmds_ptr); +} + +#endif -- cgit v1.2.3 From f399002e68e626e7bc443e6fcab1772704cc197f Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Wed, 23 Mar 2011 14:31:09 +0100 Subject: drbd: distribute former syncer_conf settings to disk, connection, and resource level This commit breaks the API again. Move per-volume former syncer options into disk_conf. Move per-connection former syncer options into net_conf. Renamed the remainign sync_conf to res_opts Syncer settings have been changeable at runtime, so we need to prepare for these settings to be runtime-changeable in their new home as well. Introduce new configuration operations, and share the netlink attribute between "attach" (create new disk) and "disk-opts" (change options). Same for "connect" and "net-opts". Some fields cannot be changed at runtime, however. Introduce a new flag GENLA_F_INVARIANT to be able to trigger on that in the generated validation and assignment functions. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 133 +++++++++++++++++++++----------------- include/linux/drbd_limits.h | 2 + include/linux/genl_magic_func.h | 49 +++++++++----- include/linux/genl_magic_struct.h | 18 ++++-- 4 files changed, 123 insertions(+), 79 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index a07d69279b1a..938e8560a833 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -102,66 +102,73 @@ GENL_struct(DRBD_NLA_CFG_CONTEXT, 2, drbd_cfg_context, ) GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, - __u64_field(1, GENLA_F_MANDATORY, disk_size) - __str_field(2, GENLA_F_REQUIRED, backing_dev, 128) - __str_field(3, GENLA_F_REQUIRED, meta_dev, 128) - __u32_field(4, GENLA_F_REQUIRED, meta_dev_idx) - __u32_field(5, GENLA_F_MANDATORY, max_bio_bvecs) + __str_field(1, GENLA_F_REQUIRED | GENLA_F_INVARIANT, backing_dev, 128) + __str_field(2, GENLA_F_REQUIRED | GENLA_F_INVARIANT, meta_dev, 128) + __u32_field(3, GENLA_F_REQUIRED | GENLA_F_INVARIANT, meta_dev_idx) + + /* use the resize command to try and change the disk_size */ + __u64_field(4, GENLA_F_MANDATORY | GENLA_F_INVARIANT, disk_size) + /* we could change the max_bio_bvecs, + * but it won't propagate through the stack */ + __u32_field(5, GENLA_F_MANDATORY | GENLA_F_INVARIANT, max_bio_bvecs) + __u32_field(6, GENLA_F_MANDATORY, on_io_error) __u32_field(7, GENLA_F_MANDATORY, fencing) - __flg_field(8, GENLA_F_MANDATORY, no_disk_barrier) - __flg_field(9, GENLA_F_MANDATORY, no_disk_flush) - __flg_field(10, GENLA_F_MANDATORY, no_disk_drain) - __flg_field(11, GENLA_F_MANDATORY, no_md_flush) - __flg_field(12, GENLA_F_MANDATORY, use_bmbv) + + __u32_field(8, GENLA_F_MANDATORY, resync_rate) + __u32_field(9, GENLA_F_MANDATORY, resync_after) + __u32_field(10, GENLA_F_MANDATORY, al_extents) + __u32_field(11, GENLA_F_MANDATORY, c_plan_ahead) + __u32_field(12, GENLA_F_MANDATORY, c_delay_target) + __u32_field(13, GENLA_F_MANDATORY, c_fill_target) + __u32_field(14, GENLA_F_MANDATORY, c_max_rate) + __u32_field(15, GENLA_F_MANDATORY, c_min_rate) + + __flg_field(16, GENLA_F_MANDATORY, no_disk_barrier) + __flg_field(17, GENLA_F_MANDATORY, no_disk_flush) + __flg_field(18, GENLA_F_MANDATORY, no_disk_drain) + __flg_field(19, GENLA_F_MANDATORY, no_md_flush) + ) -GENL_struct(DRBD_NLA_SYNCER_CONF, 4, syncer_conf, - __u32_field(1, GENLA_F_MANDATORY, rate) - __u32_field(2, GENLA_F_MANDATORY, after) - __u32_field(3, GENLA_F_MANDATORY, al_extents) - __str_field(4, GENLA_F_MANDATORY, cpu_mask, 32) - __str_field(5, GENLA_F_MANDATORY, verify_alg, SHARED_SECRET_MAX) - __str_field(6, GENLA_F_MANDATORY, csums_alg, SHARED_SECRET_MAX) - __flg_field(7, GENLA_F_MANDATORY, use_rle) - __u32_field(8, GENLA_F_MANDATORY, on_no_data) - __u32_field(9, GENLA_F_MANDATORY, c_plan_ahead) - __u32_field(10, GENLA_F_MANDATORY, c_delay_target) - __u32_field(11, GENLA_F_MANDATORY, c_fill_target) - __u32_field(12, GENLA_F_MANDATORY, c_max_rate) - __u32_field(13, GENLA_F_MANDATORY, c_min_rate) +GENL_struct(DRBD_NLA_RESOURCE_OPTS, 4, res_opts, + __str_field(1, GENLA_F_MANDATORY, cpu_mask, 32) + __u32_field(2, GENLA_F_MANDATORY, on_no_data) ) GENL_struct(DRBD_NLA_NET_CONF, 5, net_conf, - __str_field(1, GENLA_F_MANDATORY | GENLA_F_SENSITIVE, + __bin_field(1, GENLA_F_REQUIRED | GENLA_F_INVARIANT, my_addr, 128) + __bin_field(2, GENLA_F_REQUIRED | GENLA_F_INVARIANT, peer_addr, 128) + __str_field(3, GENLA_F_MANDATORY | GENLA_F_SENSITIVE, shared_secret, SHARED_SECRET_MAX) - __str_field(2, GENLA_F_MANDATORY, cram_hmac_alg, SHARED_SECRET_MAX) - __str_field(3, GENLA_F_MANDATORY, integrity_alg, SHARED_SECRET_MAX) - __str_field(4, GENLA_F_REQUIRED, my_addr, 128) - __str_field(5, GENLA_F_REQUIRED, peer_addr, 128) - __u32_field(6, GENLA_F_REQUIRED, wire_protocol) - __u32_field(7, GENLA_F_MANDATORY, try_connect_int) - __u32_field(8, GENLA_F_MANDATORY, timeout) - __u32_field(9, GENLA_F_MANDATORY, ping_int) - __u32_field(10, GENLA_F_MANDATORY, ping_timeo) - __u32_field(11, GENLA_F_MANDATORY, sndbuf_size) - __u32_field(12, GENLA_F_MANDATORY, rcvbuf_size) - __u32_field(13, GENLA_F_MANDATORY, ko_count) - __u32_field(14, GENLA_F_MANDATORY, max_buffers) - __u32_field(15, GENLA_F_MANDATORY, max_epoch_size) - __u32_field(16, GENLA_F_MANDATORY, unplug_watermark) - __u32_field(17, GENLA_F_MANDATORY, after_sb_0p) - __u32_field(18, GENLA_F_MANDATORY, after_sb_1p) - __u32_field(19, GENLA_F_MANDATORY, after_sb_2p) - __u32_field(20, GENLA_F_MANDATORY, rr_conflict) - __u32_field(21, GENLA_F_MANDATORY, on_congestion) - __u32_field(22, GENLA_F_MANDATORY, cong_fill) - __u32_field(23, GENLA_F_MANDATORY, cong_extents) - __flg_field(24, GENLA_F_MANDATORY, two_primaries) - __flg_field(25, GENLA_F_MANDATORY, want_lose) - __flg_field(26, GENLA_F_MANDATORY, no_cork) - __flg_field(27, GENLA_F_MANDATORY, always_asbp) - __flg_field(28, GENLA_F_MANDATORY, dry_run) + __str_field(4, GENLA_F_MANDATORY, cram_hmac_alg, SHARED_SECRET_MAX) + __str_field(5, GENLA_F_MANDATORY, integrity_alg, SHARED_SECRET_MAX) + __str_field(6, GENLA_F_MANDATORY, verify_alg, SHARED_SECRET_MAX) + __str_field(7, GENLA_F_MANDATORY, csums_alg, SHARED_SECRET_MAX) + __u32_field(8, GENLA_F_MANDATORY, wire_protocol) + __u32_field(9, GENLA_F_MANDATORY, try_connect_int) + __u32_field(10, GENLA_F_MANDATORY, timeout) + __u32_field(11, GENLA_F_MANDATORY, ping_int) + __u32_field(12, GENLA_F_MANDATORY, ping_timeo) + __u32_field(13, GENLA_F_MANDATORY, sndbuf_size) + __u32_field(14, GENLA_F_MANDATORY, rcvbuf_size) + __u32_field(15, GENLA_F_MANDATORY, ko_count) + __u32_field(16, GENLA_F_MANDATORY, max_buffers) + __u32_field(17, GENLA_F_MANDATORY, max_epoch_size) + __u32_field(18, GENLA_F_MANDATORY, unplug_watermark) + __u32_field(19, GENLA_F_MANDATORY, after_sb_0p) + __u32_field(20, GENLA_F_MANDATORY, after_sb_1p) + __u32_field(21, GENLA_F_MANDATORY, after_sb_2p) + __u32_field(22, GENLA_F_MANDATORY, rr_conflict) + __u32_field(23, GENLA_F_MANDATORY, on_congestion) + __u32_field(24, GENLA_F_MANDATORY, cong_fill) + __u32_field(25, GENLA_F_MANDATORY, cong_extents) + __flg_field(26, GENLA_F_MANDATORY, two_primaries) + __flg_field(27, GENLA_F_MANDATORY | GENLA_F_INVARIANT, want_lose) + __flg_field(28, GENLA_F_MANDATORY, no_cork) + __flg_field(29, GENLA_F_MANDATORY, always_asbp) + __flg_field(30, GENLA_F_MANDATORY | GENLA_F_INVARIANT, dry_run) + __flg_field(31, GENLA_F_MANDATORY, use_rle) ) GENL_struct(DRBD_NLA_SET_ROLE_PARMS, 6, set_role_parms, @@ -270,11 +277,10 @@ GENL_op(DRBD_ADM_ADD_LINK, 7, GENL_doit(drbd_adm_create_connection), GENL_op(DRBD_ADM_DEL_LINK, 8, GENL_doit(drbd_adm_delete_connection), GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) - /* operates on replication links */ -GENL_op(DRBD_ADM_SYNCER, 9, - GENL_doit(drbd_adm_syncer), +GENL_op(DRBD_ADM_RESOURCE_OPTS, 9, + GENL_doit(drbd_adm_resource_opts), GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_SYNCER_CONF, GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_RESOURCE_OPTS, GENLA_F_MANDATORY) ) GENL_op( @@ -284,16 +290,28 @@ GENL_op( GENL_tla_expected(DRBD_NLA_NET_CONF, GENLA_F_REQUIRED) ) +GENL_op( + DRBD_ADM_CHG_NET_OPTS, 29, + GENL_doit(drbd_adm_net_opts), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_NET_CONF, GENLA_F_REQUIRED) +) + GENL_op(DRBD_ADM_DISCONNECT, 11, GENL_doit(drbd_adm_disconnect), GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) - /* operates on minors */ GENL_op(DRBD_ADM_ATTACH, 12, GENL_doit(drbd_adm_attach), GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) GENL_tla_expected(DRBD_NLA_DISK_CONF, GENLA_F_REQUIRED) ) +GENL_op(DRBD_ADM_CHG_DISK_OPTS, 28, + GENL_doit(drbd_adm_disk_opts), + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_DISK_OPTS, GENLA_F_REQUIRED) +) + GENL_op( DRBD_ADM_RESIZE, 13, GENL_doit(drbd_adm_resize), @@ -301,7 +319,6 @@ GENL_op( GENL_tla_expected(DRBD_NLA_RESIZE_PARMS, GENLA_F_MANDATORY) ) - /* operates on all volumes within a resource */ GENL_op( DRBD_ADM_PRIMARY, 14, GENL_doit(drbd_adm_set_role), diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 22920a8af4e2..659a8eb38830 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -166,5 +166,7 @@ #define DRBD_CONG_EXTENTS_MAX DRBD_AL_EXTENTS_MAX #define DRBD_CONG_EXTENTS_DEF DRBD_AL_EXTENTS_DEF +#define DRBD_PROTOCOL_DEF DRBD_PROT_C + #undef RANGE #endif diff --git a/include/linux/genl_magic_func.h b/include/linux/genl_magic_func.h index c8c67239f616..e458282a3728 100644 --- a/include/linux/genl_magic_func.h +++ b/include/linux/genl_magic_func.h @@ -190,11 +190,12 @@ static struct nlattr *nested_attr_tb[128]; #undef GENL_struct #define GENL_struct(tag_name, tag_number, s_name, s_fields) \ - /* static, potentially unused */ \ -int s_name ## _from_attrs(struct s_name *s, struct nlattr *tb[]) \ +/* *_from_attrs functions are static, but potentially unused */ \ +static int __ ## s_name ## _from_attrs(struct s_name *s, \ + struct genl_info *info, bool exclude_invariants) \ { \ const int maxtype = ARRAY_SIZE(s_name ## _nl_policy)-1; \ - struct nlattr *tla = tb[tag_number]; \ + struct nlattr *tla = info->attrs[tag_number]; \ struct nlattr **ntb = nested_attr_tb; \ struct nlattr *nla; \ int err; \ @@ -211,33 +212,49 @@ int s_name ## _from_attrs(struct s_name *s, struct nlattr *tb[]) \ \ s_fields \ return 0; \ -} +} __attribute__((unused)) \ +static int s_name ## _from_attrs(struct s_name *s, \ + struct genl_info *info) \ +{ \ + return __ ## s_name ## _from_attrs(s, info, false); \ +} __attribute__((unused)) \ +static int s_name ## _from_attrs_for_change(struct s_name *s, \ + struct genl_info *info) \ +{ \ + return __ ## s_name ## _from_attrs(s, info, true); \ +} __attribute__((unused)) \ -#undef __field -#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put) \ +#define __assign(attr_nr, attr_flag, name, nla_type, type, assignment...) \ nla = ntb[__nla_type(attr_nr)]; \ if (nla) { \ - if (s) \ - s->name = __get(nla); \ - DPRINT_FIELD("<<", nla_type, name, s, nla); \ + if (exclude_invariants && ((attr_flag) & GENLA_F_INVARIANT)) { \ + pr_info("<< must not change invariant attr: %s\n", #name); \ + return -EEXIST; \ + } \ + assignment; \ + } else if (exclude_invariants && ((attr_flag) & GENLA_F_INVARIANT)) { \ + /* attribute missing from payload, */ \ + /* which was expected */ \ } else if ((attr_flag) & GENLA_F_REQUIRED) { \ pr_info("<< missing attr: %s\n", #name); \ return -ENOMSG; \ } +#undef __field +#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put) \ + __assign(attr_nr, attr_flag, name, nla_type, type, \ + if (s) \ + s->name = __get(nla); \ + DPRINT_FIELD("<<", nla_type, name, s, nla)) + /* validate_nla() already checked nla_len <= maxlen appropriately. */ #undef __array #define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, __get, __put) \ - nla = ntb[__nla_type(attr_nr)]; \ - if (nla) { \ + __assign(attr_nr, attr_flag, name, nla_type, type, \ if (s) \ s->name ## _len = \ __get(s->name, nla, maxlen); \ - DPRINT_ARRAY("<<", nla_type, name, s, nla); \ - } else if ((attr_flag) & GENLA_F_REQUIRED) { \ - pr_info("<< missing attr: %s\n", #name); \ - return -ENOMSG; \ - } \ + DPRINT_ARRAY("<<", nla_type, name, s, nla)) #include GENL_MAGIC_INCLUDE_FILE diff --git a/include/linux/genl_magic_struct.h b/include/linux/genl_magic_struct.h index 745ebfd6c7e5..9a605b9ee834 100644 --- a/include/linux/genl_magic_struct.h +++ b/include/linux/genl_magic_struct.h @@ -59,12 +59,20 @@ enum { GENLA_F_MANDATORY = 1 << 14, GENLA_F_REQUIRED = 1 << 15, - /* This will not be present in the __u16 .nla_type, but can be - * triggered on in _to_skb, to exclude "sensitive" - * information from broadcasts, or on unpriviledged get requests. - * This is useful because genetlink multicast groups can be listened in - * on by anyone. */ + /* Below will not be present in the __u16 .nla_type, but can be + * triggered on in _to_skb resp. _from_attrs */ + + /* To exclude "sensitive" information from broadcasts, or on + * unpriviledged get requests. This is useful because genetlink + * multicast groups can be listened in on by anyone. */ GENLA_F_SENSITIVE = 1 << 16, + + /* INVARIAN options cannot be changed at runtime. + * Useful to share an attribute policy and struct definition, + * between some "create" and "change" commands, + * but disallow certain fields to be changed online. + */ + GENLA_F_INVARIANT = 1 << 17, }; #define __nla_type(x) ((__u16)((__u16)(x) & (__u16)NLA_TYPE_MASK)) -- cgit v1.2.3 From cb703454a283d8dd5599e928eeea30367ca18874 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Thu, 24 Mar 2011 11:03:07 +0100 Subject: drbd: Converted drbd_try_outdate_peer() from mdev to tconn Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 9cdb888607ae..60d308819096 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -65,7 +65,8 @@ enum drbd_io_error_p { }; enum drbd_fencing_p { - FP_DONT_CARE, + FP_NOT_AVAIL = -1, /* Not a policy */ + FP_DONT_CARE = 0, FP_RESOURCE, FP_STONITH }; -- cgit v1.2.3 From 0c8e36d9b843be56e4e43d4ef3c3eb6a97205599 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Wed, 30 Mar 2011 16:00:17 +0200 Subject: drbd: Introduce protocol version 100 headers The 8 byte header finally becomes too small. With the protocol 100 header we have 16 bit for the volume number, proper 32 bit for the data length, and 32 bit for further extensions in the future. Previous versions of drbd are using version 80 headers for all packets short enough for protocol 80. They support both header versions in worker context, but only version 80 headers in asynchronous context. For backwards compatibility, continue to use version 80 headers for short packets before protocol version 100. From protocol version 100 on, use the same header version for all packets. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 1 + include/linux/drbd_genl.h | 2 -- include/linux/drbd_limits.h | 2 ++ 3 files changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 60d308819096..fe8d6ba31bcb 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -341,6 +341,7 @@ enum drbd_timeout_flag { #define DRBD_MAGIC 0x83740267 #define DRBD_MAGIC_BIG 0x835a +#define DRBD_MAGIC_100 0x8620ec20 /* how I came up with this magic? * base64 decode "actlog==" ;) */ diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 938e8560a833..10144d546a66 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -95,8 +95,6 @@ GENL_struct(DRBD_NLA_CFG_REPLY, 1, drbd_cfg_reply, * and/or the replication group (aka resource) name, * and the volume id within the resource. */ GENL_struct(DRBD_NLA_CFG_CONTEXT, 2, drbd_cfg_context, - /* currently only 256 volumes per group, - * but maybe we still change that */ __u32_field(1, GENLA_F_MANDATORY, ctx_volume) __str_field(2, GENLA_F_MANDATORY, ctx_conn_name, 128) ) diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 659a8eb38830..7f5149bef70e 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -19,6 +19,8 @@ #define DRBD_MINOR_COUNT_MAX 256 #define DRBD_MINOR_COUNT_DEF 32 +#define DRBD_VOLUME_MAX 65535 + #define DRBD_DIALOG_REFRESH_MIN 0 #define DRBD_DIALOG_REFRESH_MAX 600 -- cgit v1.2.3 From b032b6fa3528d6eed972db32257cb316a66e0dac Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Wed, 13 Apr 2011 18:16:10 -0700 Subject: drbd: Allow online change of replication protocol only with agreed_pv >= 100 Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index fe8d6ba31bcb..6c7c85d8fc41 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -160,6 +160,7 @@ enum drbd_ret_code { ERR_MINOR_CONFIGURED = 160, ERR_MINOR_EXISTS = 161, ERR_INVALID_REQUEST = 162, + ERR_NEED_APV_100 = 163, /* insert new ones above this line */ AFTER_LAST_ERR_CODE -- cgit v1.2.3 From d8cd289dbe69ce9b8115d6f200ceff657e5dafa0 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Tue, 3 May 2011 12:27:11 +0200 Subject: drbd: Remove left-over unused define Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_limits.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 7f5149bef70e..bcebb016fda3 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -170,5 +170,4 @@ #define DRBD_PROTOCOL_DEF DRBD_PROT_C -#undef RANGE #endif -- cgit v1.2.3 From b966b5dd8e17e6c105ca55533fd412de5d5b429e Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Tue, 3 May 2011 14:56:09 +0200 Subject: drbd: Generate the drbd_set_*_defaults() functions from drbd_genl.h Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 91 +++++++++++++++++++-------------------- include/linux/genl_magic_func.h | 26 +++++++++++ include/linux/genl_magic_struct.h | 8 ++++ 3 files changed, 79 insertions(+), 46 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 10144d546a66..549800668cb9 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -110,63 +110,62 @@ GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, * but it won't propagate through the stack */ __u32_field(5, GENLA_F_MANDATORY | GENLA_F_INVARIANT, max_bio_bvecs) - __u32_field(6, GENLA_F_MANDATORY, on_io_error) - __u32_field(7, GENLA_F_MANDATORY, fencing) - - __u32_field(8, GENLA_F_MANDATORY, resync_rate) - __u32_field(9, GENLA_F_MANDATORY, resync_after) - __u32_field(10, GENLA_F_MANDATORY, al_extents) - __u32_field(11, GENLA_F_MANDATORY, c_plan_ahead) - __u32_field(12, GENLA_F_MANDATORY, c_delay_target) - __u32_field(13, GENLA_F_MANDATORY, c_fill_target) - __u32_field(14, GENLA_F_MANDATORY, c_max_rate) - __u32_field(15, GENLA_F_MANDATORY, c_min_rate) - - __flg_field(16, GENLA_F_MANDATORY, no_disk_barrier) - __flg_field(17, GENLA_F_MANDATORY, no_disk_flush) - __flg_field(18, GENLA_F_MANDATORY, no_disk_drain) - __flg_field(19, GENLA_F_MANDATORY, no_md_flush) - + __u32_field_def(6, GENLA_F_MANDATORY, on_io_error, DRBD_ON_IO_ERROR_DEF) + __u32_field_def(7, GENLA_F_MANDATORY, fencing, DRBD_FENCING_DEF) + + __u32_field_def(8, GENLA_F_MANDATORY, resync_rate, DRBD_RATE_DEF) + __u32_field_def(9, GENLA_F_MANDATORY, resync_after, DRBD_AFTER_DEF) + __u32_field_def(10, GENLA_F_MANDATORY, al_extents, DRBD_AL_EXTENTS_DEF) + __u32_field_def(11, GENLA_F_MANDATORY, c_plan_ahead, DRBD_C_PLAN_AHEAD_DEF) + __u32_field_def(12, GENLA_F_MANDATORY, c_delay_target, DRBD_C_DELAY_TARGET_DEF) + __u32_field_def(13, GENLA_F_MANDATORY, c_fill_target, DRBD_C_FILL_TARGET_DEF) + __u32_field_def(14, GENLA_F_MANDATORY, c_max_rate, DRBD_C_MAX_RATE_DEF) + __u32_field_def(15, GENLA_F_MANDATORY, c_min_rate, DRBD_C_MIN_RATE_DEF) + + __flg_field_def(16, GENLA_F_MANDATORY, no_disk_barrier, 0) + __flg_field_def(17, GENLA_F_MANDATORY, no_disk_flush, 0) + __flg_field_def(18, GENLA_F_MANDATORY, no_disk_drain, 0) + __flg_field_def(19, GENLA_F_MANDATORY, no_md_flush, 0) ) GENL_struct(DRBD_NLA_RESOURCE_OPTS, 4, res_opts, - __str_field(1, GENLA_F_MANDATORY, cpu_mask, 32) - __u32_field(2, GENLA_F_MANDATORY, on_no_data) + __str_field_def(1, GENLA_F_MANDATORY, cpu_mask, 32) + __u32_field_def(2, GENLA_F_MANDATORY, on_no_data, DRBD_ON_NO_DATA_DEF) ) GENL_struct(DRBD_NLA_NET_CONF, 5, net_conf, __bin_field(1, GENLA_F_REQUIRED | GENLA_F_INVARIANT, my_addr, 128) __bin_field(2, GENLA_F_REQUIRED | GENLA_F_INVARIANT, peer_addr, 128) - __str_field(3, GENLA_F_MANDATORY | GENLA_F_SENSITIVE, + __str_field_def(3, GENLA_F_MANDATORY | GENLA_F_SENSITIVE, shared_secret, SHARED_SECRET_MAX) - __str_field(4, GENLA_F_MANDATORY, cram_hmac_alg, SHARED_SECRET_MAX) - __str_field(5, GENLA_F_MANDATORY, integrity_alg, SHARED_SECRET_MAX) - __str_field(6, GENLA_F_MANDATORY, verify_alg, SHARED_SECRET_MAX) - __str_field(7, GENLA_F_MANDATORY, csums_alg, SHARED_SECRET_MAX) - __u32_field(8, GENLA_F_MANDATORY, wire_protocol) - __u32_field(9, GENLA_F_MANDATORY, try_connect_int) - __u32_field(10, GENLA_F_MANDATORY, timeout) - __u32_field(11, GENLA_F_MANDATORY, ping_int) - __u32_field(12, GENLA_F_MANDATORY, ping_timeo) - __u32_field(13, GENLA_F_MANDATORY, sndbuf_size) - __u32_field(14, GENLA_F_MANDATORY, rcvbuf_size) - __u32_field(15, GENLA_F_MANDATORY, ko_count) - __u32_field(16, GENLA_F_MANDATORY, max_buffers) - __u32_field(17, GENLA_F_MANDATORY, max_epoch_size) - __u32_field(18, GENLA_F_MANDATORY, unplug_watermark) - __u32_field(19, GENLA_F_MANDATORY, after_sb_0p) - __u32_field(20, GENLA_F_MANDATORY, after_sb_1p) - __u32_field(21, GENLA_F_MANDATORY, after_sb_2p) - __u32_field(22, GENLA_F_MANDATORY, rr_conflict) - __u32_field(23, GENLA_F_MANDATORY, on_congestion) - __u32_field(24, GENLA_F_MANDATORY, cong_fill) - __u32_field(25, GENLA_F_MANDATORY, cong_extents) - __flg_field(26, GENLA_F_MANDATORY, two_primaries) + __str_field_def(4, GENLA_F_MANDATORY, cram_hmac_alg, SHARED_SECRET_MAX) + __str_field_def(5, GENLA_F_MANDATORY, integrity_alg, SHARED_SECRET_MAX) + __str_field_def(6, GENLA_F_MANDATORY, verify_alg, SHARED_SECRET_MAX) + __str_field_def(7, GENLA_F_MANDATORY, csums_alg, SHARED_SECRET_MAX) + __u32_field_def(8, GENLA_F_MANDATORY, wire_protocol, DRBD_PROTOCOL_DEF) + __u32_field_def(9, GENLA_F_MANDATORY, try_connect_int, DRBD_CONNECT_INT_DEF) + __u32_field_def(10, GENLA_F_MANDATORY, timeout, DRBD_TIMEOUT_DEF) + __u32_field_def(11, GENLA_F_MANDATORY, ping_int, DRBD_PING_INT_DEF) + __u32_field_def(12, GENLA_F_MANDATORY, ping_timeo, DRBD_PING_TIMEO_DEF) + __u32_field_def(13, GENLA_F_MANDATORY, sndbuf_size, DRBD_SNDBUF_SIZE_DEF) + __u32_field_def(14, GENLA_F_MANDATORY, rcvbuf_size, DRBD_RCVBUF_SIZE_DEF) + __u32_field_def(15, GENLA_F_MANDATORY, ko_count, DRBD_KO_COUNT_DEF) + __u32_field_def(16, GENLA_F_MANDATORY, max_buffers, DRBD_MAX_BUFFERS_DEF) + __u32_field_def(17, GENLA_F_MANDATORY, max_epoch_size, DRBD_MAX_EPOCH_SIZE_DEF) + __u32_field_def(18, GENLA_F_MANDATORY, unplug_watermark, DRBD_UNPLUG_WATERMARK_DEF) + __u32_field_def(19, GENLA_F_MANDATORY, after_sb_0p, DRBD_AFTER_SB_0P_DEF) + __u32_field_def(20, GENLA_F_MANDATORY, after_sb_1p, DRBD_AFTER_SB_1P_DEF) + __u32_field_def(21, GENLA_F_MANDATORY, after_sb_2p, DRBD_AFTER_SB_2P_DEF) + __u32_field_def(22, GENLA_F_MANDATORY, rr_conflict, DRBD_RR_CONFLICT_DEF) + __u32_field_def(23, GENLA_F_MANDATORY, on_congestion, DRBD_ON_CONGESTION_DEF) + __u32_field_def(24, GENLA_F_MANDATORY, cong_fill, DRBD_CONG_FILL_DEF) + __u32_field_def(25, GENLA_F_MANDATORY, cong_extents, DRBD_CONG_EXTENTS_DEF) + __flg_field_def(26, GENLA_F_MANDATORY, two_primaries, 0) __flg_field(27, GENLA_F_MANDATORY | GENLA_F_INVARIANT, want_lose) - __flg_field(28, GENLA_F_MANDATORY, no_cork) - __flg_field(29, GENLA_F_MANDATORY, always_asbp) + __flg_field_def(28, GENLA_F_MANDATORY, no_cork, 0) + __flg_field_def(29, GENLA_F_MANDATORY, always_asbp, 0) __flg_field(30, GENLA_F_MANDATORY | GENLA_F_INVARIANT, dry_run) - __flg_field(31, GENLA_F_MANDATORY, use_rle) + __flg_field_def(31, GENLA_F_MANDATORY, use_rle, 0) ) GENL_struct(DRBD_NLA_SET_ROLE_PARMS, 6, set_role_parms, diff --git a/include/linux/genl_magic_func.h b/include/linux/genl_magic_func.h index e458282a3728..e908f1c50355 100644 --- a/include/linux/genl_magic_func.h +++ b/include/linux/genl_magic_func.h @@ -427,6 +427,32 @@ static inline int s_name ## _to_unpriv_skb(struct sk_buff *skb, \ #include GENL_MAGIC_INCLUDE_FILE + +/* Functions for initializing structs to default values. */ + +#undef __field +#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put) +#undef __array +#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, __get, __put) +#undef __u32_field_def +#define __u32_field_def(attr_nr, attr_flag, name, default) \ + x->name = default; +#undef __flg_field_def +#define __flg_field_def(attr_nr, attr_flag, name, default) \ + x->name = default; +#undef __str_field_def +#define __str_field_def(attr_nr, attr_flag, name, maxlen) \ + memset(x->name, 0, sizeof(x->name)); \ + x->name ## _len = 0; +#undef GENL_struct +#define GENL_struct(tag_name, tag_number, s_name, s_fields) \ +static void set_ ## s_name ## _defaults(struct s_name *x) __attribute__((unused)); \ +static void set_ ## s_name ## _defaults(struct s_name *x) { \ +s_fields \ +} + +#include GENL_MAGIC_INCLUDE_FILE + #endif /* __KERNEL__ */ /* }}}1 */ diff --git a/include/linux/genl_magic_struct.h b/include/linux/genl_magic_struct.h index 9a605b9ee834..f2c7cc7831df 100644 --- a/include/linux/genl_magic_struct.h +++ b/include/linux/genl_magic_struct.h @@ -107,6 +107,14 @@ enum { __array(attr_nr, attr_flag, name, NLA_BINARY, char, maxlen, \ nla_memcpy, NLA_PUT) +/* fields with default values */ +#define __flg_field_def(attr_nr, attr_flag, name, default) \ + __flg_field(attr_nr, attr_flag, name) +#define __u32_field_def(attr_nr, attr_flag, name, default) \ + __u32_field(attr_nr, attr_flag, name) +#define __str_field_def(attr_nr, attr_flag, name, maxlen) \ + __str_field(attr_nr, attr_flag, name, maxlen) + #define __nla_put_flag(skb, attrtype, value) \ do { \ if (value) \ -- cgit v1.2.3 From 563e4cf25ec804eb02cd30a41baa2fcc6c06679b Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Wed, 4 May 2011 10:33:52 +0200 Subject: drbd: Introduce __s32_field in the genetlink macro magic ...and drop explicit typecasts (int)meta_dev_idx < 0. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 2 +- include/linux/genl_magic_struct.h | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 549800668cb9..f143e3c0f33b 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -102,7 +102,7 @@ GENL_struct(DRBD_NLA_CFG_CONTEXT, 2, drbd_cfg_context, GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, __str_field(1, GENLA_F_REQUIRED | GENLA_F_INVARIANT, backing_dev, 128) __str_field(2, GENLA_F_REQUIRED | GENLA_F_INVARIANT, meta_dev, 128) - __u32_field(3, GENLA_F_REQUIRED | GENLA_F_INVARIANT, meta_dev_idx) + __s32_field(3, GENLA_F_REQUIRED | GENLA_F_INVARIANT, meta_dev_idx) /* use the resize command to try and change the disk_size */ __u64_field(4, GENLA_F_MANDATORY | GENLA_F_INVARIANT, disk_size) diff --git a/include/linux/genl_magic_struct.h b/include/linux/genl_magic_struct.h index f2c7cc7831df..ddbdd0a24476 100644 --- a/include/linux/genl_magic_struct.h +++ b/include/linux/genl_magic_struct.h @@ -97,6 +97,9 @@ enum { #define __u32_field(attr_nr, attr_flag, name) \ __field(attr_nr, attr_flag, name, NLA_U32, __u32, \ nla_get_u32, NLA_PUT_U32) +#define __s32_field(attr_nr, attr_flag, name) \ + __field(attr_nr, attr_flag, name, NLA_U32, __s32, \ + nla_get_u32, NLA_PUT_U32) #define __u64_field(attr_nr, attr_flag, name) \ __field(attr_nr, attr_flag, name, NLA_U64, __u64, \ nla_get_u64, NLA_PUT_U64) -- cgit v1.2.3 From a5d8e1fb9d22851de89bbf52db6b11c56b895dd4 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Wed, 4 May 2011 16:06:51 +0200 Subject: drbd: Convert boolean flags on netlink from NLA_FLAG to NLA_U8 Flags of type NLA_FLAG are either present or absent, but do not have a value by themselves. Use type NLA_U8 for our boolean flags instead, and use the value to determine if the flag should be on or off. On the drbdsetup command line, all those flags have an optional yes/no argument which defaults to yes. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/genl_magic_struct.h | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/genl_magic_struct.h b/include/linux/genl_magic_struct.h index ddbdd0a24476..b1ddbb5bd725 100644 --- a/include/linux/genl_magic_struct.h +++ b/include/linux/genl_magic_struct.h @@ -86,8 +86,8 @@ enum { /* possible field types */ #define __flg_field(attr_nr, attr_flag, name) \ - __field(attr_nr, attr_flag, name, NLA_FLAG, char, \ - nla_get_flag, __nla_put_flag) + __field(attr_nr, attr_flag, name, NLA_U8, char, \ + nla_get_u8, NLA_PUT_U8) #define __u8_field(attr_nr, attr_flag, name) \ __field(attr_nr, attr_flag, name, NLA_U8, unsigned char, \ nla_get_u8, NLA_PUT_U8) @@ -118,12 +118,6 @@ enum { #define __str_field_def(attr_nr, attr_flag, name, maxlen) \ __str_field(attr_nr, attr_flag, name, maxlen) -#define __nla_put_flag(skb, attrtype, value) \ - do { \ - if (value) \ - NLA_PUT_FLAG(skb, attrtype); \ - } while (0) - #define GENL_op_init(args...) args #define GENL_doit(handler) \ .doit = handler, \ -- cgit v1.2.3 From 66b2f6b9c59c5e7003e13281dfe72e174f93988c Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Wed, 4 May 2011 15:25:35 +0200 Subject: drbd: Turn no-disk-flushes into disk-flushes={yes|no} Change the --no-disk-flushes drbdsetup command line option as well as the no_disk_flush netlink packet. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index f143e3c0f33b..945c4dd3470c 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -122,8 +122,8 @@ GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, __u32_field_def(14, GENLA_F_MANDATORY, c_max_rate, DRBD_C_MAX_RATE_DEF) __u32_field_def(15, GENLA_F_MANDATORY, c_min_rate, DRBD_C_MIN_RATE_DEF) - __flg_field_def(16, GENLA_F_MANDATORY, no_disk_barrier, 0) - __flg_field_def(17, GENLA_F_MANDATORY, no_disk_flush, 0) + __flg_field_def(16, GENLA_F_MANDATORY, disk_barrier, 1) + __flg_field_def(17, GENLA_F_MANDATORY, disk_flushes, 1) __flg_field_def(18, GENLA_F_MANDATORY, no_disk_drain, 0) __flg_field_def(19, GENLA_F_MANDATORY, no_md_flush, 0) ) -- cgit v1.2.3 From d0c980e236243cd03aa2291243587ac1ba3c2b04 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Wed, 4 May 2011 15:25:35 +0200 Subject: drbd: Turn no-disk-drain into disk-drain={yes|no} Change the --no-disk-drain drbdsetup command line option as well as the no_disk_drain netlink packet. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 945c4dd3470c..30ad6600b444 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -124,7 +124,7 @@ GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, __flg_field_def(16, GENLA_F_MANDATORY, disk_barrier, 1) __flg_field_def(17, GENLA_F_MANDATORY, disk_flushes, 1) - __flg_field_def(18, GENLA_F_MANDATORY, no_disk_drain, 0) + __flg_field_def(18, GENLA_F_MANDATORY, disk_drain, 1) __flg_field_def(19, GENLA_F_MANDATORY, no_md_flush, 0) ) -- cgit v1.2.3 From e544046ab842ab93c275a6fc4e043c1cb637076d Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Wed, 4 May 2011 15:25:35 +0200 Subject: drbd: Turn no-md-flushes into md-flushes={yes|no} Change the --no-md-flushes drbdsetup command line option as well as the no_md_flush netlink packet. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 30ad6600b444..53518fc23154 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -125,7 +125,7 @@ GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, __flg_field_def(16, GENLA_F_MANDATORY, disk_barrier, 1) __flg_field_def(17, GENLA_F_MANDATORY, disk_flushes, 1) __flg_field_def(18, GENLA_F_MANDATORY, disk_drain, 1) - __flg_field_def(19, GENLA_F_MANDATORY, no_md_flush, 0) + __flg_field_def(19, GENLA_F_MANDATORY, md_flushes, 1) ) GENL_struct(DRBD_NLA_RESOURCE_OPTS, 4, res_opts, -- cgit v1.2.3 From bb77d34ecc6fe6cdc3f4f0841a516695c2eacc04 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Wed, 4 May 2011 15:25:35 +0200 Subject: drbd: Turn no-tcp-cork into tcp-cork={yes|no} Change the --no-tcp-cork drbdsetup command line option as well as the no_cork netlink packet. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 53518fc23154..6632d10f1ee1 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -162,7 +162,7 @@ GENL_struct(DRBD_NLA_NET_CONF, 5, net_conf, __u32_field_def(25, GENLA_F_MANDATORY, cong_extents, DRBD_CONG_EXTENTS_DEF) __flg_field_def(26, GENLA_F_MANDATORY, two_primaries, 0) __flg_field(27, GENLA_F_MANDATORY | GENLA_F_INVARIANT, want_lose) - __flg_field_def(28, GENLA_F_MANDATORY, no_cork, 0) + __flg_field_def(28, GENLA_F_MANDATORY, tcp_cork, 1) __flg_field_def(29, GENLA_F_MANDATORY, always_asbp, 0) __flg_field(30, GENLA_F_MANDATORY | GENLA_F_INVARIANT, dry_run) __flg_field_def(31, GENLA_F_MANDATORY, use_rle, 0) -- cgit v1.2.3 From 7bac3e6f7e74993475a94487effe05dc1f68bdc7 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Fri, 6 May 2011 17:50:57 +0200 Subject: drbd: Also define the default values of boolean flags in a single place Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 16 ++++++++-------- include/linux/drbd_limits.h | 10 ++++++++++ 2 files changed, 18 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 6632d10f1ee1..02647dc8c67c 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -122,10 +122,10 @@ GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, __u32_field_def(14, GENLA_F_MANDATORY, c_max_rate, DRBD_C_MAX_RATE_DEF) __u32_field_def(15, GENLA_F_MANDATORY, c_min_rate, DRBD_C_MIN_RATE_DEF) - __flg_field_def(16, GENLA_F_MANDATORY, disk_barrier, 1) - __flg_field_def(17, GENLA_F_MANDATORY, disk_flushes, 1) - __flg_field_def(18, GENLA_F_MANDATORY, disk_drain, 1) - __flg_field_def(19, GENLA_F_MANDATORY, md_flushes, 1) + __flg_field_def(16, GENLA_F_MANDATORY, disk_barrier, DRBD_DISK_BARRIER_DEF) + __flg_field_def(17, GENLA_F_MANDATORY, disk_flushes, DRBD_DISK_FLUSHES_DEF) + __flg_field_def(18, GENLA_F_MANDATORY, disk_drain, DRBD_DISK_DRAIN_DEF) + __flg_field_def(19, GENLA_F_MANDATORY, md_flushes, DRBD_MD_FLUSHES_DEF) ) GENL_struct(DRBD_NLA_RESOURCE_OPTS, 4, res_opts, @@ -160,12 +160,12 @@ GENL_struct(DRBD_NLA_NET_CONF, 5, net_conf, __u32_field_def(23, GENLA_F_MANDATORY, on_congestion, DRBD_ON_CONGESTION_DEF) __u32_field_def(24, GENLA_F_MANDATORY, cong_fill, DRBD_CONG_FILL_DEF) __u32_field_def(25, GENLA_F_MANDATORY, cong_extents, DRBD_CONG_EXTENTS_DEF) - __flg_field_def(26, GENLA_F_MANDATORY, two_primaries, 0) + __flg_field_def(26, GENLA_F_MANDATORY, two_primaries, DRBD_ALLOW_TWO_PRIMARIES_DEF) __flg_field(27, GENLA_F_MANDATORY | GENLA_F_INVARIANT, want_lose) - __flg_field_def(28, GENLA_F_MANDATORY, tcp_cork, 1) - __flg_field_def(29, GENLA_F_MANDATORY, always_asbp, 0) + __flg_field_def(28, GENLA_F_MANDATORY, tcp_cork, DRBD_TCP_CORK_DEF) + __flg_field_def(29, GENLA_F_MANDATORY, always_asbp, DRBD_ALWAYS_ASBP_DEF) __flg_field(30, GENLA_F_MANDATORY | GENLA_F_INVARIANT, dry_run) - __flg_field_def(31, GENLA_F_MANDATORY, use_rle, 0) + __flg_field_def(31, GENLA_F_MANDATORY, use_rle, DRBD_USE_RLE_DEF) ) GENL_struct(DRBD_NLA_SET_ROLE_PARMS, 6, set_role_parms, diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index bcebb016fda3..3d3e2d5125cb 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -170,4 +170,14 @@ #define DRBD_PROTOCOL_DEF DRBD_PROT_C +#define DRBD_DISK_BARRIER_DEF 0 +#define DRBD_DISK_FLUSHES_DEF 1 +#define DRBD_DISK_DRAIN_DEF 1 +#define DRBD_MD_FLUSHES_DEF 1 +#define DRBD_TCP_CORK_DEF 1 + +#define DRBD_ALLOW_TWO_PRIMARIES_DEF 0 +#define DRBD_ALWAYS_ASBP_DEF 0 +#define DRBD_USE_RLE_DEF 0 + #endif -- cgit v1.2.3 From 6139f60dc192e2c5478c1126d1aff7905dc0a98a Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Fri, 6 May 2011 20:00:02 +0200 Subject: drbd: Rename the want_lose field/flag to discard_my_data This is what it is called in config files and on the command line as well. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 02647dc8c67c..6aece551d87e 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -161,7 +161,7 @@ GENL_struct(DRBD_NLA_NET_CONF, 5, net_conf, __u32_field_def(24, GENLA_F_MANDATORY, cong_fill, DRBD_CONG_FILL_DEF) __u32_field_def(25, GENLA_F_MANDATORY, cong_extents, DRBD_CONG_EXTENTS_DEF) __flg_field_def(26, GENLA_F_MANDATORY, two_primaries, DRBD_ALLOW_TWO_PRIMARIES_DEF) - __flg_field(27, GENLA_F_MANDATORY | GENLA_F_INVARIANT, want_lose) + __flg_field(27, GENLA_F_MANDATORY | GENLA_F_INVARIANT, discard_my_data) __flg_field_def(28, GENLA_F_MANDATORY, tcp_cork, DRBD_TCP_CORK_DEF) __flg_field_def(29, GENLA_F_MANDATORY, always_asbp, DRBD_ALWAYS_ASBP_DEF) __flg_field(30, GENLA_F_MANDATORY | GENLA_F_INVARIANT, dry_run) -- cgit v1.2.3 From 6394b9358e6187414b7a6de7ba2c681ee4a790ac Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Wed, 11 May 2011 14:29:52 +0200 Subject: drbd: Refer to resync-rate consistently throughout the code Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 2 +- include/linux/drbd_limits.h | 7 ++++--- 2 files changed, 5 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 6aece551d87e..778708d92939 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -113,7 +113,7 @@ GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, __u32_field_def(6, GENLA_F_MANDATORY, on_io_error, DRBD_ON_IO_ERROR_DEF) __u32_field_def(7, GENLA_F_MANDATORY, fencing, DRBD_FENCING_DEF) - __u32_field_def(8, GENLA_F_MANDATORY, resync_rate, DRBD_RATE_DEF) + __u32_field_def(8, GENLA_F_MANDATORY, resync_rate, DRBD_RESYNC_RATE_DEF) __u32_field_def(9, GENLA_F_MANDATORY, resync_after, DRBD_AFTER_DEF) __u32_field_def(10, GENLA_F_MANDATORY, al_extents, DRBD_AL_EXTENTS_DEF) __u32_field_def(11, GENLA_F_MANDATORY, c_plan_ahead, DRBD_C_PLAN_AHEAD_DEF) diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 3d3e2d5125cb..48339ae69d50 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -98,10 +98,11 @@ /* syncer { */ /* FIXME allow rate to be zero? */ -#define DRBD_RATE_MIN 1 +#define DRBD_RESYNC_RATE_MIN 1 /* channel bonding 10 GbE, or other hardware */ -#define DRBD_RATE_MAX (4 << 20) -#define DRBD_RATE_DEF 250 /* kb/second */ +#define DRBD_RESYNC_RATE_MAX (4 << 20) +#define DRBD_RESYNC_RATE_DEF 250 +#define DRBD_RESYNC_RATE_SCALE 'k' /* kilobytes */ /* less than 7 would hit performance unnecessarily. * 919 slots context information per transaction, -- cgit v1.2.3 From 69ef82dea4c34e4a0541fc3f415b0fef70fe12b0 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Wed, 11 May 2011 14:34:35 +0200 Subject: drbd: Refer to connect-int consistently throughout the code Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 778708d92939..67c816c0fc28 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -143,7 +143,7 @@ GENL_struct(DRBD_NLA_NET_CONF, 5, net_conf, __str_field_def(6, GENLA_F_MANDATORY, verify_alg, SHARED_SECRET_MAX) __str_field_def(7, GENLA_F_MANDATORY, csums_alg, SHARED_SECRET_MAX) __u32_field_def(8, GENLA_F_MANDATORY, wire_protocol, DRBD_PROTOCOL_DEF) - __u32_field_def(9, GENLA_F_MANDATORY, try_connect_int, DRBD_CONNECT_INT_DEF) + __u32_field_def(9, GENLA_F_MANDATORY, connect_int, DRBD_CONNECT_INT_DEF) __u32_field_def(10, GENLA_F_MANDATORY, timeout, DRBD_TIMEOUT_DEF) __u32_field_def(11, GENLA_F_MANDATORY, ping_int, DRBD_PING_INT_DEF) __u32_field_def(12, GENLA_F_MANDATORY, ping_timeo, DRBD_PING_TIMEO_DEF) -- cgit v1.2.3 From 95f8efd08bcce65df994049a292b94e56c7ada67 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Thu, 12 May 2011 11:15:34 +0200 Subject: drbd: Fix the upper limit of resync-after The 32-bit resync_after netlink field takes a device minor number as parameter, which is no longer limited to 255. We cannot statically verify which device numbers are valid, so set the ummer limit to the highest possible signed 32-bit integer. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 4 ++-- include/linux/drbd_genl.h | 2 +- include/linux/drbd_limits.h | 7 ++++--- 3 files changed, 7 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 6c7c85d8fc41..05063e6db81f 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -130,8 +130,8 @@ enum drbd_ret_code { ERR_INTR = 129, /* EINTR */ ERR_RESIZE_RESYNC = 130, ERR_NO_PRIMARY = 131, - ERR_SYNC_AFTER = 132, - ERR_SYNC_AFTER_CYCLE = 133, + ERR_RESYNC_AFTER = 132, + ERR_RESYNC_AFTER_CYCLE = 133, ERR_PAUSE_IS_SET = 134, ERR_PAUSE_IS_CLEAR = 135, ERR_PACKET_NR = 137, diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 67c816c0fc28..a59466f7f661 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -114,7 +114,7 @@ GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, __u32_field_def(7, GENLA_F_MANDATORY, fencing, DRBD_FENCING_DEF) __u32_field_def(8, GENLA_F_MANDATORY, resync_rate, DRBD_RESYNC_RATE_DEF) - __u32_field_def(9, GENLA_F_MANDATORY, resync_after, DRBD_AFTER_DEF) + __u32_field_def(9, GENLA_F_MANDATORY, resync_after, DRBD_RESYNC_AFTER_DEF) __u32_field_def(10, GENLA_F_MANDATORY, al_extents, DRBD_AL_EXTENTS_DEF) __u32_field_def(11, GENLA_F_MANDATORY, c_plan_ahead, DRBD_C_PLAN_AHEAD_DEF) __u32_field_def(12, GENLA_F_MANDATORY, c_delay_target, DRBD_C_DELAY_TARGET_DEF) diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 48339ae69d50..c4a8f0fef7b2 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -113,9 +113,10 @@ #define DRBD_AL_EXTENTS_MAX 6433 #define DRBD_AL_EXTENTS_DEF 127 -#define DRBD_AFTER_MIN -1 -#define DRBD_AFTER_MAX 255 -#define DRBD_AFTER_DEF -1 +#define DRBD_RESYNC_AFTER_MIN -1 +#define DRBD_RESYNC_AFTER_MAX (1<<30) +#define DRBD_RESYNC_AFTER_DEF -1 +#define DRBD_RESYNC_AFTER_SCALE '1' /* } */ -- cgit v1.2.3 From 3a45abd577727d2268e190d372600f8652883453 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Thu, 12 May 2011 12:02:54 +0200 Subject: drbd: Convert resync-after into a signed netlink field Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 2 +- include/linux/genl_magic_func.h | 3 +++ include/linux/genl_magic_struct.h | 2 ++ 3 files changed, 6 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index a59466f7f661..7b174a093a8d 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -114,7 +114,7 @@ GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, __u32_field_def(7, GENLA_F_MANDATORY, fencing, DRBD_FENCING_DEF) __u32_field_def(8, GENLA_F_MANDATORY, resync_rate, DRBD_RESYNC_RATE_DEF) - __u32_field_def(9, GENLA_F_MANDATORY, resync_after, DRBD_RESYNC_AFTER_DEF) + __s32_field_def(9, GENLA_F_MANDATORY, resync_after, DRBD_RESYNC_AFTER_DEF) __u32_field_def(10, GENLA_F_MANDATORY, al_extents, DRBD_AL_EXTENTS_DEF) __u32_field_def(11, GENLA_F_MANDATORY, c_plan_ahead, DRBD_C_PLAN_AHEAD_DEF) __u32_field_def(12, GENLA_F_MANDATORY, c_delay_target, DRBD_C_DELAY_TARGET_DEF) diff --git a/include/linux/genl_magic_func.h b/include/linux/genl_magic_func.h index e908f1c50355..94e839aafae3 100644 --- a/include/linux/genl_magic_func.h +++ b/include/linux/genl_magic_func.h @@ -437,6 +437,9 @@ static inline int s_name ## _to_unpriv_skb(struct sk_buff *skb, \ #undef __u32_field_def #define __u32_field_def(attr_nr, attr_flag, name, default) \ x->name = default; +#undef __s32_field_def +#define __s32_field_def(attr_nr, attr_flag, name, default) \ + x->name = default; #undef __flg_field_def #define __flg_field_def(attr_nr, attr_flag, name, default) \ x->name = default; diff --git a/include/linux/genl_magic_struct.h b/include/linux/genl_magic_struct.h index b1ddbb5bd725..0fca21fd1af5 100644 --- a/include/linux/genl_magic_struct.h +++ b/include/linux/genl_magic_struct.h @@ -115,6 +115,8 @@ enum { __flg_field(attr_nr, attr_flag, name) #define __u32_field_def(attr_nr, attr_flag, name, default) \ __u32_field(attr_nr, attr_flag, name) +#define __s32_field_def(attr_nr, attr_flag, name, default) \ + __s32_field(attr_nr, attr_flag, name) #define __str_field_def(attr_nr, attr_flag, name, maxlen) \ __str_field(attr_nr, attr_flag, name, maxlen) -- cgit v1.2.3 From c5482bbd9607bf38cbc952eacaa429e6ba3160a0 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Wed, 11 May 2011 14:44:55 +0200 Subject: drbd: Rename DISK_SIZE_SECT -> DISK_SIZE We don't have the units in constant names in other places, either. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_limits.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index c4a8f0fef7b2..8f8bbea545e0 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -125,9 +125,10 @@ * the upper limit with 64bit kernel, enough ram and flexible meta data * is 1 PiB, currently. */ /* DRBD_MAX_SECTORS */ -#define DRBD_DISK_SIZE_SECT_MIN 0 -#define DRBD_DISK_SIZE_SECT_MAX (1 * (2LLU << 40)) -#define DRBD_DISK_SIZE_SECT_DEF 0 /* = disabled = no user size... */ +#define DRBD_DISK_SIZE_MIN 0 +#define DRBD_DISK_SIZE_MAX (16 * (2LLU << 30)) +#define DRBD_DISK_SIZE_DEF 0 /* = disabled = no user size... */ +#define DRBD_DISK_SIZE_SCALE 's' /* sectors */ #define DRBD_ON_IO_ERROR_DEF EP_DETACH #define DRBD_FENCING_DEF FP_DONT_CARE -- cgit v1.2.3 From dcb20d1a8e7d9602e52a9b673ae4d7f746d2cbb2 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Mon, 16 May 2011 14:30:24 +0200 Subject: drbd: Refuse to change network options online when... * the peer does not speak protocol_version 100 and the user wants to change one of: - wire_protocol - two_primaries - integrity_alg * the user wants to remove the allow_two_primaries flag when there are two primaries Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 05063e6db81f..679e81123229 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -161,6 +161,7 @@ enum drbd_ret_code { ERR_MINOR_EXISTS = 161, ERR_INVALID_REQUEST = 162, ERR_NEED_APV_100 = 163, + ERR_NEED_ALLOW_TWO_PRI = 164, /* insert new ones above this line */ AFTER_LAST_ERR_CODE -- cgit v1.2.3 From 309f0b70ab789bf85c5f5f32dbc466d42f024747 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Fri, 13 May 2011 01:24:14 +0200 Subject: drbd: Use more generic constant names These constants are useful for the same purpose in more than one place. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_limits.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 8f8bbea545e0..3627f760966e 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -113,10 +113,10 @@ #define DRBD_AL_EXTENTS_MAX 6433 #define DRBD_AL_EXTENTS_DEF 127 -#define DRBD_RESYNC_AFTER_MIN -1 -#define DRBD_RESYNC_AFTER_MAX (1<<30) -#define DRBD_RESYNC_AFTER_DEF -1 -#define DRBD_RESYNC_AFTER_SCALE '1' +#define DRBD_MINOR_NUMBER_MIN -1 +#define DRBD_MINOR_NUMBER_MAX (1<<30) +#define DRBD_MINOR_NUMBER_DEF -1 +#define DRBD_MINOR_NUMBER_SCALE '1' /* } */ -- cgit v1.2.3 From 509100e6012db92f4af3796436b450447c6c8268 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Tue, 17 May 2011 13:29:46 +0200 Subject: drbd: Output signed / unsigned netlink fields correctly Note: All input values are still treated as signed; unsigned long long values are still broken. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/genl_magic_func.h | 23 +++++++++++------ include/linux/genl_magic_struct.h | 52 ++++++++++++++++++++++++++++----------- 2 files changed, 53 insertions(+), 22 deletions(-) (limited to 'include/linux') diff --git a/include/linux/genl_magic_func.h b/include/linux/genl_magic_func.h index 94e839aafae3..2ae16126c6a4 100644 --- a/include/linux/genl_magic_func.h +++ b/include/linux/genl_magic_func.h @@ -78,12 +78,13 @@ static struct nla_policy s_name ## _nl_policy[] __read_mostly = \ { s_fields }; #undef __field -#define __field(attr_nr, attr_flag, name, nla_type, _type, __get, __put) \ +#define __field(attr_nr, attr_flag, name, nla_type, _type, __get, \ + __put, __is_signed) \ [__nla_type(attr_nr)] = { .type = nla_type }, #undef __array #define __array(attr_nr, attr_flag, name, nla_type, _type, maxlen, \ - __get, __put) \ + __get, __put, __is_signed) \ [__nla_type(attr_nr)] = { .type = nla_type, \ .len = maxlen - (nla_type == NLA_NUL_STRING) }, @@ -241,7 +242,8 @@ static int s_name ## _from_attrs_for_change(struct s_name *s, \ } #undef __field -#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put) \ +#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put, \ + __is_signed) \ __assign(attr_nr, attr_flag, name, nla_type, type, \ if (s) \ s->name = __get(nla); \ @@ -249,7 +251,8 @@ static int s_name ## _from_attrs_for_change(struct s_name *s, \ /* validate_nla() already checked nla_len <= maxlen appropriately. */ #undef __array -#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, __get, __put) \ +#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, \ + __get, __put, __is_signed) \ __assign(attr_nr, attr_flag, name, nla_type, type, \ if (s) \ s->name ## _len = \ @@ -410,14 +413,16 @@ static inline int s_name ## _to_unpriv_skb(struct sk_buff *skb, \ #undef __field -#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put) \ +#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put, \ + __is_signed) \ if (!exclude_sensitive || !((attr_flag) & GENLA_F_SENSITIVE)) { \ DPRINT_FIELD(">>", nla_type, name, s, NULL); \ __put(skb, attr_nr, s->name); \ } #undef __array -#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, __get, __put) \ +#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, \ + __get, __put, __is_signed) \ if (!exclude_sensitive || !((attr_flag) & GENLA_F_SENSITIVE)) { \ DPRINT_ARRAY(">>",nla_type, name, s, NULL); \ __put(skb, attr_nr, min_t(int, maxlen, \ @@ -431,9 +436,11 @@ static inline int s_name ## _to_unpriv_skb(struct sk_buff *skb, \ /* Functions for initializing structs to default values. */ #undef __field -#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put) +#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put, \ + __is_signed) #undef __array -#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, __get, __put) +#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, \ + __get, __put, __is_signed) #undef __u32_field_def #define __u32_field_def(attr_nr, attr_flag, name, default) \ x->name = default; diff --git a/include/linux/genl_magic_struct.h b/include/linux/genl_magic_struct.h index 0fca21fd1af5..ba911da84d9f 100644 --- a/include/linux/genl_magic_struct.h +++ b/include/linux/genl_magic_struct.h @@ -87,28 +87,28 @@ enum { /* possible field types */ #define __flg_field(attr_nr, attr_flag, name) \ __field(attr_nr, attr_flag, name, NLA_U8, char, \ - nla_get_u8, NLA_PUT_U8) + nla_get_u8, NLA_PUT_U8, false) #define __u8_field(attr_nr, attr_flag, name) \ __field(attr_nr, attr_flag, name, NLA_U8, unsigned char, \ - nla_get_u8, NLA_PUT_U8) + nla_get_u8, NLA_PUT_U8, false) #define __u16_field(attr_nr, attr_flag, name) \ __field(attr_nr, attr_flag, name, NLA_U16, __u16, \ - nla_get_u16, NLA_PUT_U16) + nla_get_u16, NLA_PUT_U16, false) #define __u32_field(attr_nr, attr_flag, name) \ __field(attr_nr, attr_flag, name, NLA_U32, __u32, \ - nla_get_u32, NLA_PUT_U32) + nla_get_u32, NLA_PUT_U32, false) #define __s32_field(attr_nr, attr_flag, name) \ __field(attr_nr, attr_flag, name, NLA_U32, __s32, \ - nla_get_u32, NLA_PUT_U32) + nla_get_u32, NLA_PUT_U32, true) #define __u64_field(attr_nr, attr_flag, name) \ __field(attr_nr, attr_flag, name, NLA_U64, __u64, \ - nla_get_u64, NLA_PUT_U64) + nla_get_u64, NLA_PUT_U64, false) #define __str_field(attr_nr, attr_flag, name, maxlen) \ __array(attr_nr, attr_flag, name, NLA_NUL_STRING, char, maxlen, \ - nla_strlcpy, NLA_PUT) + nla_strlcpy, NLA_PUT, false) #define __bin_field(attr_nr, attr_flag, name, maxlen) \ __array(attr_nr, attr_flag, name, NLA_BINARY, char, maxlen, \ - nla_memcpy, NLA_PUT) + nla_memcpy, NLA_PUT, false) /* fields with default values */ #define __flg_field_def(attr_nr, attr_flag, name, default) \ @@ -174,11 +174,13 @@ enum { \ }; #undef __field -#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put) \ +#define __field(attr_nr, attr_flag, name, nla_type, type, \ + __get, __put, __is_signed) \ T_ ## name = (__u16)(attr_nr | attr_flag), #undef __array -#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, __get, __put) \ +#define __array(attr_nr, attr_flag, name, nla_type, type, \ + maxlen, __get, __put, __is_signed) \ T_ ## name = (__u16)(attr_nr | attr_flag), #include GENL_MAGIC_INCLUDE_FILE @@ -238,11 +240,13 @@ static inline void ct_assert_unique_ ## s_name ## _attributes(void) \ } #undef __field -#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put) \ +#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put, \ + __is_signed) \ case attr_nr: #undef __array -#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, __get, __put) \ +#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, \ + __get, __put, __is_signed) \ case attr_nr: #include GENL_MAGIC_INCLUDE_FILE @@ -260,16 +264,36 @@ static inline void ct_assert_unique_ ## s_name ## _attributes(void) \ struct s_name { s_fields }; #undef __field -#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put) \ +#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put, \ + __is_signed) \ type name; #undef __array -#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, __get, __put) \ +#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, \ + __get, __put, __is_signed) \ type name[maxlen]; \ __u32 name ## _len; #include GENL_MAGIC_INCLUDE_FILE +#undef GENL_struct +#define GENL_struct(tag_name, tag_number, s_name, s_fields) \ +enum { \ + s_fields \ +}; + +#undef __field +#define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put, \ + is_signed) \ + F_ ## name ## _IS_SIGNED = is_signed, + +#undef __array +#define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, \ + __get, __put, is_signed) \ + F_ ## name ## _IS_SIGNED = is_signed, + +#include GENL_MAGIC_INCLUDE_FILE + /* }}}1 */ #endif /* GENL_MAGIC_STRUCT_H */ /* vim: set foldmethod=marker nofoldenable : */ -- cgit v1.2.3 From bbbef2d5ad8203f67274196dac90754ae106a463 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Wed, 18 May 2011 16:48:16 +0200 Subject: drbd: Remove unused GENLA_F_MAY_IGNORE flag Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/genl_magic_struct.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/genl_magic_struct.h b/include/linux/genl_magic_struct.h index ba911da84d9f..f3c3425ac30f 100644 --- a/include/linux/genl_magic_struct.h +++ b/include/linux/genl_magic_struct.h @@ -40,11 +40,6 @@ extern void CONCAT_(GENL_MAGIC_FAMILY, _genl_unregister)(void); * yet implemented features, if newer userland tries to use them even though * the genl_family version clearly indicates they are not available. * - * @GENLA_F_MAY_IGNORE: To clearly document the fact, for good measure. - * To be used for API extensions for things that have sane defaults, - * so newer userland can still talk to older kernel, knowing it will - * silently ignore these attributes if not yet known. - * * NOTE: These flags overload * NLA_F_NESTED (1 << 15) * NLA_F_NET_BYTEORDER (1 << 14) @@ -55,7 +50,6 @@ extern void CONCAT_(GENL_MAGIC_FAMILY, _genl_unregister)(void); * See also: nla_type() */ enum { - GENLA_F_MAY_IGNORE = 0, GENLA_F_MANDATORY = 1 << 14, GENLA_F_REQUIRED = 1 << 15, -- cgit v1.2.3 From 5f9359201b5cf1d94fe0e0c47fcba38cfc921863 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Thu, 19 May 2011 17:39:28 +0200 Subject: drbd: Make drbd's use of netlink attribute flags less confusing Make it more clear in the flag names which flags are internal to drbd, and which are not. The check for mandatory attributes is the only extension visible at the netlink layer. Attributes with this flag set would look like unknown attributes to some kernel versions. The netlink layer would ignore them and also skip consistency checks on the attribute type and legth. To avoid this, we check for mandatory attributes first, remove the mandatory flag, and then process the attributes normally. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 244 +++++++++++++++++++------------------- include/linux/genl_magic_func.h | 107 ++++++++--------- include/linux/genl_magic_struct.h | 64 ++++------ 3 files changed, 193 insertions(+), 222 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 7b174a093a8d..4ceecb9307d9 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -86,7 +86,7 @@ */ GENL_struct(DRBD_NLA_CFG_REPLY, 1, drbd_cfg_reply, /* "arbitrary" size strings, nla_policy.len = 0 */ - __str_field(1, GENLA_F_MANDATORY, info_text, 0) + __str_field(1, DRBD_GENLA_F_MANDATORY, info_text, 0) ) /* Configuration requests typically need a context to operate on. @@ -95,133 +95,133 @@ GENL_struct(DRBD_NLA_CFG_REPLY, 1, drbd_cfg_reply, * and/or the replication group (aka resource) name, * and the volume id within the resource. */ GENL_struct(DRBD_NLA_CFG_CONTEXT, 2, drbd_cfg_context, - __u32_field(1, GENLA_F_MANDATORY, ctx_volume) - __str_field(2, GENLA_F_MANDATORY, ctx_conn_name, 128) + __u32_field(1, DRBD_GENLA_F_MANDATORY, ctx_volume) + __str_field(2, DRBD_GENLA_F_MANDATORY, ctx_conn_name, 128) ) GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, - __str_field(1, GENLA_F_REQUIRED | GENLA_F_INVARIANT, backing_dev, 128) - __str_field(2, GENLA_F_REQUIRED | GENLA_F_INVARIANT, meta_dev, 128) - __s32_field(3, GENLA_F_REQUIRED | GENLA_F_INVARIANT, meta_dev_idx) + __str_field(1, DRBD_F_REQUIRED | DRBD_F_INVARIANT, backing_dev, 128) + __str_field(2, DRBD_F_REQUIRED | DRBD_F_INVARIANT, meta_dev, 128) + __s32_field(3, DRBD_F_REQUIRED | DRBD_F_INVARIANT, meta_dev_idx) /* use the resize command to try and change the disk_size */ - __u64_field(4, GENLA_F_MANDATORY | GENLA_F_INVARIANT, disk_size) + __u64_field(4, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, disk_size) /* we could change the max_bio_bvecs, * but it won't propagate through the stack */ - __u32_field(5, GENLA_F_MANDATORY | GENLA_F_INVARIANT, max_bio_bvecs) - - __u32_field_def(6, GENLA_F_MANDATORY, on_io_error, DRBD_ON_IO_ERROR_DEF) - __u32_field_def(7, GENLA_F_MANDATORY, fencing, DRBD_FENCING_DEF) - - __u32_field_def(8, GENLA_F_MANDATORY, resync_rate, DRBD_RESYNC_RATE_DEF) - __s32_field_def(9, GENLA_F_MANDATORY, resync_after, DRBD_RESYNC_AFTER_DEF) - __u32_field_def(10, GENLA_F_MANDATORY, al_extents, DRBD_AL_EXTENTS_DEF) - __u32_field_def(11, GENLA_F_MANDATORY, c_plan_ahead, DRBD_C_PLAN_AHEAD_DEF) - __u32_field_def(12, GENLA_F_MANDATORY, c_delay_target, DRBD_C_DELAY_TARGET_DEF) - __u32_field_def(13, GENLA_F_MANDATORY, c_fill_target, DRBD_C_FILL_TARGET_DEF) - __u32_field_def(14, GENLA_F_MANDATORY, c_max_rate, DRBD_C_MAX_RATE_DEF) - __u32_field_def(15, GENLA_F_MANDATORY, c_min_rate, DRBD_C_MIN_RATE_DEF) - - __flg_field_def(16, GENLA_F_MANDATORY, disk_barrier, DRBD_DISK_BARRIER_DEF) - __flg_field_def(17, GENLA_F_MANDATORY, disk_flushes, DRBD_DISK_FLUSHES_DEF) - __flg_field_def(18, GENLA_F_MANDATORY, disk_drain, DRBD_DISK_DRAIN_DEF) - __flg_field_def(19, GENLA_F_MANDATORY, md_flushes, DRBD_MD_FLUSHES_DEF) + __u32_field(5, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, max_bio_bvecs) + + __u32_field_def(6, DRBD_GENLA_F_MANDATORY, on_io_error, DRBD_ON_IO_ERROR_DEF) + __u32_field_def(7, DRBD_GENLA_F_MANDATORY, fencing, DRBD_FENCING_DEF) + + __u32_field_def(8, DRBD_GENLA_F_MANDATORY, resync_rate, DRBD_RESYNC_RATE_DEF) + __s32_field_def(9, DRBD_GENLA_F_MANDATORY, resync_after, DRBD_MINOR_NUMBER_DEF) + __u32_field_def(10, DRBD_GENLA_F_MANDATORY, al_extents, DRBD_AL_EXTENTS_DEF) + __u32_field_def(11, DRBD_GENLA_F_MANDATORY, c_plan_ahead, DRBD_C_PLAN_AHEAD_DEF) + __u32_field_def(12, DRBD_GENLA_F_MANDATORY, c_delay_target, DRBD_C_DELAY_TARGET_DEF) + __u32_field_def(13, DRBD_GENLA_F_MANDATORY, c_fill_target, DRBD_C_FILL_TARGET_DEF) + __u32_field_def(14, DRBD_GENLA_F_MANDATORY, c_max_rate, DRBD_C_MAX_RATE_DEF) + __u32_field_def(15, DRBD_GENLA_F_MANDATORY, c_min_rate, DRBD_C_MIN_RATE_DEF) + + __flg_field_def(16, DRBD_GENLA_F_MANDATORY, disk_barrier, DRBD_DISK_BARRIER_DEF) + __flg_field_def(17, DRBD_GENLA_F_MANDATORY, disk_flushes, DRBD_DISK_FLUSHES_DEF) + __flg_field_def(18, DRBD_GENLA_F_MANDATORY, disk_drain, DRBD_DISK_DRAIN_DEF) + __flg_field_def(19, DRBD_GENLA_F_MANDATORY, md_flushes, DRBD_MD_FLUSHES_DEF) ) GENL_struct(DRBD_NLA_RESOURCE_OPTS, 4, res_opts, - __str_field_def(1, GENLA_F_MANDATORY, cpu_mask, 32) - __u32_field_def(2, GENLA_F_MANDATORY, on_no_data, DRBD_ON_NO_DATA_DEF) + __str_field_def(1, DRBD_GENLA_F_MANDATORY, cpu_mask, 32) + __u32_field_def(2, DRBD_GENLA_F_MANDATORY, on_no_data, DRBD_ON_NO_DATA_DEF) ) GENL_struct(DRBD_NLA_NET_CONF, 5, net_conf, - __bin_field(1, GENLA_F_REQUIRED | GENLA_F_INVARIANT, my_addr, 128) - __bin_field(2, GENLA_F_REQUIRED | GENLA_F_INVARIANT, peer_addr, 128) - __str_field_def(3, GENLA_F_MANDATORY | GENLA_F_SENSITIVE, + __bin_field(1, DRBD_F_REQUIRED | DRBD_F_INVARIANT, my_addr, 128) + __bin_field(2, DRBD_F_REQUIRED | DRBD_F_INVARIANT, peer_addr, 128) + __str_field_def(3, DRBD_GENLA_F_MANDATORY | DRBD_F_SENSITIVE, shared_secret, SHARED_SECRET_MAX) - __str_field_def(4, GENLA_F_MANDATORY, cram_hmac_alg, SHARED_SECRET_MAX) - __str_field_def(5, GENLA_F_MANDATORY, integrity_alg, SHARED_SECRET_MAX) - __str_field_def(6, GENLA_F_MANDATORY, verify_alg, SHARED_SECRET_MAX) - __str_field_def(7, GENLA_F_MANDATORY, csums_alg, SHARED_SECRET_MAX) - __u32_field_def(8, GENLA_F_MANDATORY, wire_protocol, DRBD_PROTOCOL_DEF) - __u32_field_def(9, GENLA_F_MANDATORY, connect_int, DRBD_CONNECT_INT_DEF) - __u32_field_def(10, GENLA_F_MANDATORY, timeout, DRBD_TIMEOUT_DEF) - __u32_field_def(11, GENLA_F_MANDATORY, ping_int, DRBD_PING_INT_DEF) - __u32_field_def(12, GENLA_F_MANDATORY, ping_timeo, DRBD_PING_TIMEO_DEF) - __u32_field_def(13, GENLA_F_MANDATORY, sndbuf_size, DRBD_SNDBUF_SIZE_DEF) - __u32_field_def(14, GENLA_F_MANDATORY, rcvbuf_size, DRBD_RCVBUF_SIZE_DEF) - __u32_field_def(15, GENLA_F_MANDATORY, ko_count, DRBD_KO_COUNT_DEF) - __u32_field_def(16, GENLA_F_MANDATORY, max_buffers, DRBD_MAX_BUFFERS_DEF) - __u32_field_def(17, GENLA_F_MANDATORY, max_epoch_size, DRBD_MAX_EPOCH_SIZE_DEF) - __u32_field_def(18, GENLA_F_MANDATORY, unplug_watermark, DRBD_UNPLUG_WATERMARK_DEF) - __u32_field_def(19, GENLA_F_MANDATORY, after_sb_0p, DRBD_AFTER_SB_0P_DEF) - __u32_field_def(20, GENLA_F_MANDATORY, after_sb_1p, DRBD_AFTER_SB_1P_DEF) - __u32_field_def(21, GENLA_F_MANDATORY, after_sb_2p, DRBD_AFTER_SB_2P_DEF) - __u32_field_def(22, GENLA_F_MANDATORY, rr_conflict, DRBD_RR_CONFLICT_DEF) - __u32_field_def(23, GENLA_F_MANDATORY, on_congestion, DRBD_ON_CONGESTION_DEF) - __u32_field_def(24, GENLA_F_MANDATORY, cong_fill, DRBD_CONG_FILL_DEF) - __u32_field_def(25, GENLA_F_MANDATORY, cong_extents, DRBD_CONG_EXTENTS_DEF) - __flg_field_def(26, GENLA_F_MANDATORY, two_primaries, DRBD_ALLOW_TWO_PRIMARIES_DEF) - __flg_field(27, GENLA_F_MANDATORY | GENLA_F_INVARIANT, discard_my_data) - __flg_field_def(28, GENLA_F_MANDATORY, tcp_cork, DRBD_TCP_CORK_DEF) - __flg_field_def(29, GENLA_F_MANDATORY, always_asbp, DRBD_ALWAYS_ASBP_DEF) - __flg_field(30, GENLA_F_MANDATORY | GENLA_F_INVARIANT, dry_run) - __flg_field_def(31, GENLA_F_MANDATORY, use_rle, DRBD_USE_RLE_DEF) + __str_field_def(4, DRBD_GENLA_F_MANDATORY, cram_hmac_alg, SHARED_SECRET_MAX) + __str_field_def(5, DRBD_GENLA_F_MANDATORY, integrity_alg, SHARED_SECRET_MAX) + __str_field_def(6, DRBD_GENLA_F_MANDATORY, verify_alg, SHARED_SECRET_MAX) + __str_field_def(7, DRBD_GENLA_F_MANDATORY, csums_alg, SHARED_SECRET_MAX) + __u32_field_def(8, DRBD_GENLA_F_MANDATORY, wire_protocol, DRBD_PROTOCOL_DEF) + __u32_field_def(9, DRBD_GENLA_F_MANDATORY, connect_int, DRBD_CONNECT_INT_DEF) + __u32_field_def(10, DRBD_GENLA_F_MANDATORY, timeout, DRBD_TIMEOUT_DEF) + __u32_field_def(11, DRBD_GENLA_F_MANDATORY, ping_int, DRBD_PING_INT_DEF) + __u32_field_def(12, DRBD_GENLA_F_MANDATORY, ping_timeo, DRBD_PING_TIMEO_DEF) + __u32_field_def(13, DRBD_GENLA_F_MANDATORY, sndbuf_size, DRBD_SNDBUF_SIZE_DEF) + __u32_field_def(14, DRBD_GENLA_F_MANDATORY, rcvbuf_size, DRBD_RCVBUF_SIZE_DEF) + __u32_field_def(15, DRBD_GENLA_F_MANDATORY, ko_count, DRBD_KO_COUNT_DEF) + __u32_field_def(16, DRBD_GENLA_F_MANDATORY, max_buffers, DRBD_MAX_BUFFERS_DEF) + __u32_field_def(17, DRBD_GENLA_F_MANDATORY, max_epoch_size, DRBD_MAX_EPOCH_SIZE_DEF) + __u32_field_def(18, DRBD_GENLA_F_MANDATORY, unplug_watermark, DRBD_UNPLUG_WATERMARK_DEF) + __u32_field_def(19, DRBD_GENLA_F_MANDATORY, after_sb_0p, DRBD_AFTER_SB_0P_DEF) + __u32_field_def(20, DRBD_GENLA_F_MANDATORY, after_sb_1p, DRBD_AFTER_SB_1P_DEF) + __u32_field_def(21, DRBD_GENLA_F_MANDATORY, after_sb_2p, DRBD_AFTER_SB_2P_DEF) + __u32_field_def(22, DRBD_GENLA_F_MANDATORY, rr_conflict, DRBD_RR_CONFLICT_DEF) + __u32_field_def(23, DRBD_GENLA_F_MANDATORY, on_congestion, DRBD_ON_CONGESTION_DEF) + __u32_field_def(24, DRBD_GENLA_F_MANDATORY, cong_fill, DRBD_CONG_FILL_DEF) + __u32_field_def(25, DRBD_GENLA_F_MANDATORY, cong_extents, DRBD_CONG_EXTENTS_DEF) + __flg_field_def(26, DRBD_GENLA_F_MANDATORY, two_primaries, DRBD_ALLOW_TWO_PRIMARIES_DEF) + __flg_field(27, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, discard_my_data) + __flg_field_def(28, DRBD_GENLA_F_MANDATORY, tcp_cork, DRBD_TCP_CORK_DEF) + __flg_field_def(29, DRBD_GENLA_F_MANDATORY, always_asbp, DRBD_ALWAYS_ASBP_DEF) + __flg_field(30, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, dry_run) + __flg_field_def(31, DRBD_GENLA_F_MANDATORY, use_rle, DRBD_USE_RLE_DEF) ) GENL_struct(DRBD_NLA_SET_ROLE_PARMS, 6, set_role_parms, - __flg_field(1, GENLA_F_MANDATORY, assume_uptodate) + __flg_field(1, DRBD_GENLA_F_MANDATORY, assume_uptodate) ) GENL_struct(DRBD_NLA_RESIZE_PARMS, 7, resize_parms, - __u64_field(1, GENLA_F_MANDATORY, resize_size) - __flg_field(2, GENLA_F_MANDATORY, resize_force) - __flg_field(3, GENLA_F_MANDATORY, no_resync) + __u64_field(1, DRBD_GENLA_F_MANDATORY, resize_size) + __flg_field(2, DRBD_GENLA_F_MANDATORY, resize_force) + __flg_field(3, DRBD_GENLA_F_MANDATORY, no_resync) ) GENL_struct(DRBD_NLA_STATE_INFO, 8, state_info, /* the reason of the broadcast, * if this is an event triggered broadcast. */ - __u32_field(1, GENLA_F_MANDATORY, sib_reason) - __u32_field(2, GENLA_F_REQUIRED, current_state) - __u64_field(3, GENLA_F_MANDATORY, capacity) - __u64_field(4, GENLA_F_MANDATORY, ed_uuid) + __u32_field(1, DRBD_GENLA_F_MANDATORY, sib_reason) + __u32_field(2, DRBD_F_REQUIRED, current_state) + __u64_field(3, DRBD_GENLA_F_MANDATORY, capacity) + __u64_field(4, DRBD_GENLA_F_MANDATORY, ed_uuid) /* These are for broadcast from after state change work. * prev_state and new_state are from the moment the state change took * place, new_state is not neccessarily the same as current_state, * there may have been more state changes since. Which will be * broadcasted soon, in their respective after state change work. */ - __u32_field(5, GENLA_F_MANDATORY, prev_state) - __u32_field(6, GENLA_F_MANDATORY, new_state) + __u32_field(5, DRBD_GENLA_F_MANDATORY, prev_state) + __u32_field(6, DRBD_GENLA_F_MANDATORY, new_state) /* if we have a local disk: */ - __bin_field(7, GENLA_F_MANDATORY, uuids, (UI_SIZE*sizeof(__u64))) - __u32_field(8, GENLA_F_MANDATORY, disk_flags) - __u64_field(9, GENLA_F_MANDATORY, bits_total) - __u64_field(10, GENLA_F_MANDATORY, bits_oos) + __bin_field(7, DRBD_GENLA_F_MANDATORY, uuids, (UI_SIZE*sizeof(__u64))) + __u32_field(8, DRBD_GENLA_F_MANDATORY, disk_flags) + __u64_field(9, DRBD_GENLA_F_MANDATORY, bits_total) + __u64_field(10, DRBD_GENLA_F_MANDATORY, bits_oos) /* and in case resync or online verify is active */ - __u64_field(11, GENLA_F_MANDATORY, bits_rs_total) - __u64_field(12, GENLA_F_MANDATORY, bits_rs_failed) + __u64_field(11, DRBD_GENLA_F_MANDATORY, bits_rs_total) + __u64_field(12, DRBD_GENLA_F_MANDATORY, bits_rs_failed) /* for pre and post notifications of helper execution */ - __str_field(13, GENLA_F_MANDATORY, helper, 32) - __u32_field(14, GENLA_F_MANDATORY, helper_exit_code) + __str_field(13, DRBD_GENLA_F_MANDATORY, helper, 32) + __u32_field(14, DRBD_GENLA_F_MANDATORY, helper_exit_code) ) GENL_struct(DRBD_NLA_START_OV_PARMS, 9, start_ov_parms, - __u64_field(1, GENLA_F_MANDATORY, ov_start_sector) + __u64_field(1, DRBD_GENLA_F_MANDATORY, ov_start_sector) ) GENL_struct(DRBD_NLA_NEW_C_UUID_PARMS, 10, new_c_uuid_parms, - __flg_field(1, GENLA_F_MANDATORY, clear_bm) + __flg_field(1, DRBD_GENLA_F_MANDATORY, clear_bm) ) GENL_struct(DRBD_NLA_TIMEOUT_PARMS, 11, timeout_parms, - __u32_field(1, GENLA_F_REQUIRED, timeout_type) + __u32_field(1, DRBD_F_REQUIRED, timeout_type) ) GENL_struct(DRBD_NLA_DISCONNECT_PARMS, 12, disconnect_parms, - __flg_field(1, GENLA_F_MANDATORY, force_disconnect) + __flg_field(1, DRBD_GENLA_F_MANDATORY, force_disconnect) ) /* @@ -232,11 +232,11 @@ GENL_mc_group(events) /* kernel -> userspace announcement of changes */ GENL_notification( DRBD_EVENT, 1, events, - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_STATE_INFO, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_NET_CONF, GENLA_F_MANDATORY) - GENL_tla_expected(DRBD_NLA_DISK_CONF, GENLA_F_MANDATORY) - GENL_tla_expected(DRBD_NLA_SYNCER_CONF, GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_STATE_INFO, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_NET_CONF, DRBD_GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_DISK_CONF, DRBD_GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_SYNCER_CONF, DRBD_GENLA_F_MANDATORY) ) /* query kernel for specific or all info */ @@ -250,116 +250,116 @@ GENL_op( ), /* To select the object .doit. * Or a subset of objects in .dumpit. */ - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_GENLA_F_MANDATORY) ) #if 0 /* TO BE DONE */ /* create or destroy resources, aka replication groups */ GENL_op(DRBD_ADM_CREATE_RESOURCE, 3, GENL_doit(drbd_adm_create_resource), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_DELETE_RESOURCE, 4, GENL_doit(drbd_adm_delete_resource), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) #endif /* add DRBD minor devices as volumes to resources */ GENL_op(DRBD_ADM_ADD_MINOR, 5, GENL_doit(drbd_adm_add_minor), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_DEL_MINOR, 6, GENL_doit(drbd_adm_delete_minor), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) /* add or delete replication links to resources */ GENL_op(DRBD_ADM_ADD_LINK, 7, GENL_doit(drbd_adm_create_connection), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_DEL_LINK, 8, GENL_doit(drbd_adm_delete_connection), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_RESOURCE_OPTS, 9, GENL_doit(drbd_adm_resource_opts), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_RESOURCE_OPTS, GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_RESOURCE_OPTS, DRBD_GENLA_F_MANDATORY) ) GENL_op( DRBD_ADM_CONNECT, 10, GENL_doit(drbd_adm_connect), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_NET_CONF, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_NET_CONF, DRBD_F_REQUIRED) ) GENL_op( DRBD_ADM_CHG_NET_OPTS, 29, GENL_doit(drbd_adm_net_opts), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_NET_CONF, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_NET_CONF, DRBD_F_REQUIRED) ) GENL_op(DRBD_ADM_DISCONNECT, 11, GENL_doit(drbd_adm_disconnect), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_ATTACH, 12, GENL_doit(drbd_adm_attach), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_DISK_CONF, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_DISK_CONF, DRBD_F_REQUIRED) ) GENL_op(DRBD_ADM_CHG_DISK_OPTS, 28, GENL_doit(drbd_adm_disk_opts), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_DISK_OPTS, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_DISK_OPTS, DRBD_F_REQUIRED) ) GENL_op( DRBD_ADM_RESIZE, 13, GENL_doit(drbd_adm_resize), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_RESIZE_PARMS, GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_RESIZE_PARMS, DRBD_GENLA_F_MANDATORY) ) GENL_op( DRBD_ADM_PRIMARY, 14, GENL_doit(drbd_adm_set_role), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_SET_ROLE_PARMS, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_SET_ROLE_PARMS, DRBD_F_REQUIRED) ) GENL_op( DRBD_ADM_SECONDARY, 15, GENL_doit(drbd_adm_set_role), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_SET_ROLE_PARMS, GENLA_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_SET_ROLE_PARMS, DRBD_F_REQUIRED) ) GENL_op( DRBD_ADM_NEW_C_UUID, 16, GENL_doit(drbd_adm_new_c_uuid), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED) - GENL_tla_expected(DRBD_NLA_NEW_C_UUID_PARMS, GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_NEW_C_UUID_PARMS, DRBD_GENLA_F_MANDATORY) ) GENL_op( DRBD_ADM_START_OV, 17, GENL_doit(drbd_adm_start_ov), - GENL_tla_expected(DRBD_NLA_START_OV_PARMS, GENLA_F_MANDATORY) + GENL_tla_expected(DRBD_NLA_START_OV_PARMS, DRBD_GENLA_F_MANDATORY) ) GENL_op(DRBD_ADM_DETACH, 18, GENL_doit(drbd_adm_detach), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_INVALIDATE, 19, GENL_doit(drbd_adm_invalidate), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_INVAL_PEER, 20, GENL_doit(drbd_adm_invalidate_peer), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_PAUSE_SYNC, 21, GENL_doit(drbd_adm_pause_sync), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_RESUME_SYNC, 22, GENL_doit(drbd_adm_resume_sync), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_SUSPEND_IO, 23, GENL_doit(drbd_adm_suspend_io), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_RESUME_IO, 24, GENL_doit(drbd_adm_resume_io), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_OUTDATE, 25, GENL_doit(drbd_adm_outdate), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_GET_TIMEOUT_TYPE, 26, GENL_doit(drbd_adm_get_timeout_type), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_DOWN, 27, GENL_doit(drbd_adm_down), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, GENLA_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) diff --git a/include/linux/genl_magic_func.h b/include/linux/genl_magic_func.h index 2ae16126c6a4..58edd403a3ff 100644 --- a/include/linux/genl_magic_func.h +++ b/include/linux/genl_magic_func.h @@ -3,53 +3,6 @@ #include -/* - * Extension of genl attribute validation policies {{{1 - * {{{2 - */ - -/** - * nla_is_required - return true if this attribute is required - * @nla: netlink attribute - */ -static inline int nla_is_required(const struct nlattr *nla) -{ - return nla->nla_type & GENLA_F_REQUIRED; -} - -/** - * nla_is_mandatory - return true if understanding this attribute is mandatory - * @nla: netlink attribute - * Note: REQUIRED attributes are implicitly MANDATORY as well - */ -static inline int nla_is_mandatory(const struct nlattr *nla) -{ - return nla->nla_type & (GENLA_F_MANDATORY | GENLA_F_REQUIRED); -} - -/* Functionality to be integrated into nla_parse(), and validate_nla(), - * respectively. - * - * Enforcing the "mandatory" bit is done here, - * by rejecting unknown mandatory attributes. - * - * Part of enforcing the "required" flag would mean to embed it into - * nla_policy.type, and extending validate_nla(), which currently does - * BUG_ON(pt->type > NLA_TYPE_MAX); we have to work on existing kernels, - * so we cannot do that. Thats why enforcing "required" is done in the - * generated assignment functions below. */ -static int nla_check_unknown(int maxtype, struct nlattr *head, int len) -{ - struct nlattr *nla; - int rem; - nla_for_each_attr(nla, head, len, rem) { - __u16 type = nla_type(nla); - if (type > maxtype && nla_is_mandatory(nla)) - return -EOPNOTSUPP; - } - return 0; -} - /* * Magic: declare tla policy {{{1 * Magic: declare nested policies @@ -80,13 +33,13 @@ static struct nla_policy s_name ## _nl_policy[] __read_mostly = \ #undef __field #define __field(attr_nr, attr_flag, name, nla_type, _type, __get, \ __put, __is_signed) \ - [__nla_type(attr_nr)] = { .type = nla_type }, + [attr_nr] = { .type = nla_type }, #undef __array #define __array(attr_nr, attr_flag, name, nla_type, _type, maxlen, \ __get, __put, __is_signed) \ - [__nla_type(attr_nr)] = { .type = nla_type, \ - .len = maxlen - (nla_type == NLA_NUL_STRING) }, + [attr_nr] = { .type = nla_type, \ + .len = maxlen - (nla_type == NLA_NUL_STRING) }, #include GENL_MAGIC_INCLUDE_FILE @@ -189,6 +142,43 @@ static struct nlattr *nested_attr_tb[128]; #define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); })) #endif +static inline int drbd_nla_check_mandatory(int maxtype, struct nlattr *nla) +{ + struct nlattr *head = nla_data(nla); + int len = nla_len(nla); + int rem; + + /* + * validate_nla (called from nla_parse_nested) ignores attributes + * beyond maxtype, and does not understand the DRBD_GENLA_F_MANDATORY flag. + * In order to have it validate attributes with the DRBD_GENLA_F_MANDATORY + * flag set also, check and remove that flag before calling + * nla_parse_nested. + */ + + nla_for_each_attr(nla, head, len, rem) { + if (nla->nla_type & DRBD_GENLA_F_MANDATORY) { + if (nla_type(nla) > maxtype) + return -EOPNOTSUPP; + nla->nla_type &= ~DRBD_GENLA_F_MANDATORY; + } + } + return 0; +} + +static inline int drbd_nla_parse_nested(struct nlattr *tb[], int maxtype, + struct nlattr *nla, + const struct nla_policy *policy) +{ + int err; + + err = drbd_nla_check_mandatory(maxtype, nla); + if (!err) + err = nla_parse_nested(tb, maxtype, nla, policy); + + return err; +} + #undef GENL_struct #define GENL_struct(tag_name, tag_number, s_name, s_fields) \ /* *_from_attrs functions are static, but potentially unused */ \ @@ -204,12 +194,9 @@ static int __ ## s_name ## _from_attrs(struct s_name *s, \ if (!tla) \ return -ENOMSG; \ DPRINT_TLA(#s_name, "<=-", #tag_name); \ - err = nla_parse_nested(ntb, maxtype, tla, s_name ## _nl_policy); \ + err = drbd_nla_parse_nested(ntb, maxtype, tla, s_name ## _nl_policy); \ if (err) \ return err; \ - err = nla_check_unknown(maxtype, nla_data(tla), nla_len(tla)); \ - if (err) \ - return err; \ \ s_fields \ return 0; \ @@ -226,17 +213,17 @@ static int s_name ## _from_attrs_for_change(struct s_name *s, \ } __attribute__((unused)) \ #define __assign(attr_nr, attr_flag, name, nla_type, type, assignment...) \ - nla = ntb[__nla_type(attr_nr)]; \ + nla = ntb[attr_nr]; \ if (nla) { \ - if (exclude_invariants && ((attr_flag) & GENLA_F_INVARIANT)) { \ + if (exclude_invariants && ((attr_flag) & DRBD_F_INVARIANT)) { \ pr_info("<< must not change invariant attr: %s\n", #name); \ return -EEXIST; \ } \ assignment; \ - } else if (exclude_invariants && ((attr_flag) & GENLA_F_INVARIANT)) { \ + } else if (exclude_invariants && ((attr_flag) & DRBD_F_INVARIANT)) { \ /* attribute missing from payload, */ \ /* which was expected */ \ - } else if ((attr_flag) & GENLA_F_REQUIRED) { \ + } else if ((attr_flag) & DRBD_F_REQUIRED) { \ pr_info("<< missing attr: %s\n", #name); \ return -ENOMSG; \ } @@ -415,7 +402,7 @@ static inline int s_name ## _to_unpriv_skb(struct sk_buff *skb, \ #undef __field #define __field(attr_nr, attr_flag, name, nla_type, type, __get, __put, \ __is_signed) \ - if (!exclude_sensitive || !((attr_flag) & GENLA_F_SENSITIVE)) { \ + if (!exclude_sensitive || !((attr_flag) & DRBD_F_SENSITIVE)) { \ DPRINT_FIELD(">>", nla_type, name, s, NULL); \ __put(skb, attr_nr, s->name); \ } @@ -423,7 +410,7 @@ static inline int s_name ## _to_unpriv_skb(struct sk_buff *skb, \ #undef __array #define __array(attr_nr, attr_flag, name, nla_type, type, maxlen, \ __get, __put, __is_signed) \ - if (!exclude_sensitive || !((attr_flag) & GENLA_F_SENSITIVE)) { \ + if (!exclude_sensitive || !((attr_flag) & DRBD_F_SENSITIVE)) { \ DPRINT_ARRAY(">>",nla_type, name, s, NULL); \ __put(skb, attr_nr, min_t(int, maxlen, \ s->name ## _len + (nla_type == NLA_NUL_STRING)),\ diff --git a/include/linux/genl_magic_struct.h b/include/linux/genl_magic_struct.h index f3c3425ac30f..1d0bd79e27b3 100644 --- a/include/linux/genl_magic_struct.h +++ b/include/linux/genl_magic_struct.h @@ -26,50 +26,34 @@ extern void CONCAT_(GENL_MAGIC_FAMILY, _genl_unregister)(void); * Extension of genl attribute validation policies {{{2 */ -/** - * GENLA_F_FLAGS - policy type flags to ease compatible ABI evolvement - * - * @GENLA_F_REQUIRED: attribute has to be present, or message is considered invalid. - * Adding new REQUIRED attributes breaks ABI compatibility, so don't do that. +/* + * @DRBD_GENLA_F_MANDATORY: By default, netlink ignores attributes it does not + * know about. This flag can be set in nlattr->nla_type to indicate that this + * attribute must not be ignored. * - * @GENLA_F_MANDATORY: if present, receiver _must_ understand it. - * Without this, unknown attributes (> maxtype) are _silently_ ignored - * by validate_nla(). + * We check and remove this flag in drbd_nla_check_mandatory() before + * validating the attribute types and lengths via nla_parse_nested(). + */ +#define DRBD_GENLA_F_MANDATORY (1 << 14) + +/* + * Flags specific to drbd and not visible at the netlink layer, used in + * _from_attrs and _to_skb: * - * To be used for API extensions, so older kernel can reject requests for not - * yet implemented features, if newer userland tries to use them even though - * the genl_family version clearly indicates they are not available. + * @DRBD_F_REQUIRED: Attribute is required; a request without this attribute is + * invalid. * - * NOTE: These flags overload - * NLA_F_NESTED (1 << 15) - * NLA_F_NET_BYTEORDER (1 << 14) - * from linux/netlink.h, which are not useful for validate_nla(): - * NET_BYTEORDER is not used anywhere, and NESTED would be specified by setting - * .type = NLA_NESTED in the appropriate policy. + * @DRBD_F_SENSITIVE: Attribute includes sensitive information and must not be + * included in unpriviledged get requests or broadcasts. * - * See also: nla_type() + * @DRBD_F_INVARIANT: Attribute is set when an object is initially created, but + * cannot subsequently be changed. */ -enum { - GENLA_F_MANDATORY = 1 << 14, - GENLA_F_REQUIRED = 1 << 15, - - /* Below will not be present in the __u16 .nla_type, but can be - * triggered on in _to_skb resp. _from_attrs */ - - /* To exclude "sensitive" information from broadcasts, or on - * unpriviledged get requests. This is useful because genetlink - * multicast groups can be listened in on by anyone. */ - GENLA_F_SENSITIVE = 1 << 16, - - /* INVARIAN options cannot be changed at runtime. - * Useful to share an attribute policy and struct definition, - * between some "create" and "change" commands, - * but disallow certain fields to be changed online. - */ - GENLA_F_INVARIANT = 1 << 17, -}; +#define DRBD_F_REQUIRED (1 << 0) +#define DRBD_F_SENSITIVE (1 << 1) +#define DRBD_F_INVARIANT (1 << 2) -#define __nla_type(x) ((__u16)((__u16)(x) & (__u16)NLA_TYPE_MASK)) +#define __nla_type(x) ((__u16)((x) & NLA_TYPE_MASK & ~DRBD_GENLA_F_MANDATORY)) /* }}}1 * MAGIC @@ -170,12 +154,12 @@ enum { \ #undef __field #define __field(attr_nr, attr_flag, name, nla_type, type, \ __get, __put, __is_signed) \ - T_ ## name = (__u16)(attr_nr | attr_flag), + T_ ## name = (__u16)(attr_nr | ((attr_flag) & DRBD_GENLA_F_MANDATORY)), #undef __array #define __array(attr_nr, attr_flag, name, nla_type, type, \ maxlen, __get, __put, __is_signed) \ - T_ ## name = (__u16)(attr_nr | attr_flag), + T_ ## name = (__u16)(attr_nr | ((attr_flag) & DRBD_GENLA_F_MANDATORY)), #include GENL_MAGIC_INCLUDE_FILE -- cgit v1.2.3 From 5084d71d89e1a94193378efb12ac659e4e6ada3f Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Tue, 24 May 2011 14:08:58 +0200 Subject: drbd: drbd_nla_check_mandatory(): Need to remove the DRBD_GENLA_F_MANDATORY flag first We need to remove the flag before checking for valid types. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/genl_magic_func.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/genl_magic_func.h b/include/linux/genl_magic_func.h index 58edd403a3ff..357f2ad403b1 100644 --- a/include/linux/genl_magic_func.h +++ b/include/linux/genl_magic_func.h @@ -158,9 +158,9 @@ static inline int drbd_nla_check_mandatory(int maxtype, struct nlattr *nla) nla_for_each_attr(nla, head, len, rem) { if (nla->nla_type & DRBD_GENLA_F_MANDATORY) { + nla->nla_type &= ~DRBD_GENLA_F_MANDATORY; if (nla_type(nla) > maxtype) return -EOPNOTSUPP; - nla->nla_type &= ~DRBD_GENLA_F_MANDATORY; } } return 0; -- cgit v1.2.3 From 67b58bf723b083d4776cd7c9959246ef46c0d36f Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Mon, 6 Jun 2011 15:36:04 +0200 Subject: drbd: spelling fix: too small It is not "to small", but "too small". Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 679e81123229..fedda00374af 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -112,8 +112,8 @@ enum drbd_ret_code { ERR_OPEN_MD_DISK = 105, ERR_DISK_NOT_BDEV = 107, ERR_MD_NOT_BDEV = 108, - ERR_DISK_TO_SMALL = 111, - ERR_MD_DISK_TO_SMALL = 112, + ERR_DISK_TOO_SMALL = 111, + ERR_MD_DISK_TOO_SMALL = 112, ERR_BDCLAIM_DISK = 114, ERR_BDCLAIM_MD_DISK = 115, ERR_MD_IDX_INVALID = 116, -- cgit v1.2.3 From 789c1b626cb490acb36cf481b45040b324f60fde Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Mon, 6 Jun 2011 16:16:44 +0200 Subject: drbd: Use the terminology suggested by the command names in the source code and messages Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 4 ++-- include/linux/drbd_genl.h | 17 ++++------------- 2 files changed, 6 insertions(+), 15 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index fedda00374af..161cd414b036 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -155,8 +155,8 @@ enum drbd_ret_code { ERR_CONG_NOT_PROTO_A = 155, ERR_PIC_AFTER_DEP = 156, ERR_PIC_PEER_DEP = 157, - ERR_CONN_NOT_KNOWN = 158, - ERR_CONN_IN_USE = 159, + ERR_RES_NOT_KNOWN = 158, + ERR_RES_IN_USE = 159, ERR_MINOR_CONFIGURED = 160, ERR_MINOR_EXISTS = 161, ERR_INVALID_REQUEST = 162, diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 4ceecb9307d9..47ef324b69db 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -253,25 +253,16 @@ GENL_op( GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_GENLA_F_MANDATORY) ) -#if 0 - /* TO BE DONE */ - /* create or destroy resources, aka replication groups */ -GENL_op(DRBD_ADM_CREATE_RESOURCE, 3, GENL_doit(drbd_adm_create_resource), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) -GENL_op(DRBD_ADM_DELETE_RESOURCE, 4, GENL_doit(drbd_adm_delete_resource), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) -#endif - /* add DRBD minor devices as volumes to resources */ -GENL_op(DRBD_ADM_ADD_MINOR, 5, GENL_doit(drbd_adm_add_minor), +GENL_op(DRBD_ADM_NEW_MINOR, 5, GENL_doit(drbd_adm_add_minor), GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_DEL_MINOR, 6, GENL_doit(drbd_adm_delete_minor), GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) - /* add or delete replication links to resources */ -GENL_op(DRBD_ADM_ADD_LINK, 7, GENL_doit(drbd_adm_create_connection), + /* add or delete resources */ +GENL_op(DRBD_ADM_NEW_RESOURCE, 7, GENL_doit(drbd_adm_new_resource), GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) -GENL_op(DRBD_ADM_DEL_LINK, 8, GENL_doit(drbd_adm_delete_connection), +GENL_op(DRBD_ADM_DEL_RESOURCE, 8, GENL_doit(drbd_adm_del_resource), GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_RESOURCE_OPTS, 9, -- cgit v1.2.3 From 7c3063cc6f0e75cdf312f5f318f9a4c02e460397 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Thu, 9 Jun 2011 17:52:12 +0200 Subject: drbd: Also need to check for DRBD_GENLA_F_MANDATORY flags before nla_find_nested() This is done by introducing drbd_nla_find_nested() which handles the flag before calling nla_find_nested(). Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 2 +- include/linux/genl_magic_func.h | 37 ------------------------------------- 2 files changed, 1 insertion(+), 38 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 47ef324b69db..0c2102c05384 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -96,7 +96,7 @@ GENL_struct(DRBD_NLA_CFG_REPLY, 1, drbd_cfg_reply, * and the volume id within the resource. */ GENL_struct(DRBD_NLA_CFG_CONTEXT, 2, drbd_cfg_context, __u32_field(1, DRBD_GENLA_F_MANDATORY, ctx_volume) - __str_field(2, DRBD_GENLA_F_MANDATORY, ctx_conn_name, 128) + __str_field(2, DRBD_GENLA_F_MANDATORY, ctx_resource_name, 128) ) GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, diff --git a/include/linux/genl_magic_func.h b/include/linux/genl_magic_func.h index 357f2ad403b1..0b8a88e2e83e 100644 --- a/include/linux/genl_magic_func.h +++ b/include/linux/genl_magic_func.h @@ -142,43 +142,6 @@ static struct nlattr *nested_attr_tb[128]; #define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); })) #endif -static inline int drbd_nla_check_mandatory(int maxtype, struct nlattr *nla) -{ - struct nlattr *head = nla_data(nla); - int len = nla_len(nla); - int rem; - - /* - * validate_nla (called from nla_parse_nested) ignores attributes - * beyond maxtype, and does not understand the DRBD_GENLA_F_MANDATORY flag. - * In order to have it validate attributes with the DRBD_GENLA_F_MANDATORY - * flag set also, check and remove that flag before calling - * nla_parse_nested. - */ - - nla_for_each_attr(nla, head, len, rem) { - if (nla->nla_type & DRBD_GENLA_F_MANDATORY) { - nla->nla_type &= ~DRBD_GENLA_F_MANDATORY; - if (nla_type(nla) > maxtype) - return -EOPNOTSUPP; - } - } - return 0; -} - -static inline int drbd_nla_parse_nested(struct nlattr *tb[], int maxtype, - struct nlattr *nla, - const struct nla_policy *policy) -{ - int err; - - err = drbd_nla_check_mandatory(maxtype, nla); - if (!err) - err = nla_parse_nested(tb, maxtype, nla, policy); - - return err; -} - #undef GENL_struct #define GENL_struct(tag_name, tag_number, s_name, s_fields) \ /* *_from_attrs functions are static, but potentially unused */ \ -- cgit v1.2.3 From 089c075d88ac9407b8d7c5c8fc4b21c0d940bd82 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Tue, 14 Jun 2011 18:28:09 +0200 Subject: drbd: Convert the generic netlink interface to accept connection endpoints Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 62 +++++++++++++++++++++++------------------------ 1 file changed, 31 insertions(+), 31 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 0c2102c05384..b93db6c83882 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -97,6 +97,8 @@ GENL_struct(DRBD_NLA_CFG_REPLY, 1, drbd_cfg_reply, GENL_struct(DRBD_NLA_CFG_CONTEXT, 2, drbd_cfg_context, __u32_field(1, DRBD_GENLA_F_MANDATORY, ctx_volume) __str_field(2, DRBD_GENLA_F_MANDATORY, ctx_resource_name, 128) + __bin_field(3, DRBD_GENLA_F_MANDATORY, ctx_my_addr, 128) + __bin_field(4, DRBD_GENLA_F_MANDATORY, ctx_peer_addr, 128) ) GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, @@ -134,38 +136,36 @@ GENL_struct(DRBD_NLA_RESOURCE_OPTS, 4, res_opts, ) GENL_struct(DRBD_NLA_NET_CONF, 5, net_conf, - __bin_field(1, DRBD_F_REQUIRED | DRBD_F_INVARIANT, my_addr, 128) - __bin_field(2, DRBD_F_REQUIRED | DRBD_F_INVARIANT, peer_addr, 128) - __str_field_def(3, DRBD_GENLA_F_MANDATORY | DRBD_F_SENSITIVE, + __str_field_def(1, DRBD_GENLA_F_MANDATORY | DRBD_F_SENSITIVE, shared_secret, SHARED_SECRET_MAX) - __str_field_def(4, DRBD_GENLA_F_MANDATORY, cram_hmac_alg, SHARED_SECRET_MAX) - __str_field_def(5, DRBD_GENLA_F_MANDATORY, integrity_alg, SHARED_SECRET_MAX) - __str_field_def(6, DRBD_GENLA_F_MANDATORY, verify_alg, SHARED_SECRET_MAX) - __str_field_def(7, DRBD_GENLA_F_MANDATORY, csums_alg, SHARED_SECRET_MAX) - __u32_field_def(8, DRBD_GENLA_F_MANDATORY, wire_protocol, DRBD_PROTOCOL_DEF) - __u32_field_def(9, DRBD_GENLA_F_MANDATORY, connect_int, DRBD_CONNECT_INT_DEF) - __u32_field_def(10, DRBD_GENLA_F_MANDATORY, timeout, DRBD_TIMEOUT_DEF) - __u32_field_def(11, DRBD_GENLA_F_MANDATORY, ping_int, DRBD_PING_INT_DEF) - __u32_field_def(12, DRBD_GENLA_F_MANDATORY, ping_timeo, DRBD_PING_TIMEO_DEF) - __u32_field_def(13, DRBD_GENLA_F_MANDATORY, sndbuf_size, DRBD_SNDBUF_SIZE_DEF) - __u32_field_def(14, DRBD_GENLA_F_MANDATORY, rcvbuf_size, DRBD_RCVBUF_SIZE_DEF) - __u32_field_def(15, DRBD_GENLA_F_MANDATORY, ko_count, DRBD_KO_COUNT_DEF) - __u32_field_def(16, DRBD_GENLA_F_MANDATORY, max_buffers, DRBD_MAX_BUFFERS_DEF) - __u32_field_def(17, DRBD_GENLA_F_MANDATORY, max_epoch_size, DRBD_MAX_EPOCH_SIZE_DEF) - __u32_field_def(18, DRBD_GENLA_F_MANDATORY, unplug_watermark, DRBD_UNPLUG_WATERMARK_DEF) - __u32_field_def(19, DRBD_GENLA_F_MANDATORY, after_sb_0p, DRBD_AFTER_SB_0P_DEF) - __u32_field_def(20, DRBD_GENLA_F_MANDATORY, after_sb_1p, DRBD_AFTER_SB_1P_DEF) - __u32_field_def(21, DRBD_GENLA_F_MANDATORY, after_sb_2p, DRBD_AFTER_SB_2P_DEF) - __u32_field_def(22, DRBD_GENLA_F_MANDATORY, rr_conflict, DRBD_RR_CONFLICT_DEF) - __u32_field_def(23, DRBD_GENLA_F_MANDATORY, on_congestion, DRBD_ON_CONGESTION_DEF) - __u32_field_def(24, DRBD_GENLA_F_MANDATORY, cong_fill, DRBD_CONG_FILL_DEF) - __u32_field_def(25, DRBD_GENLA_F_MANDATORY, cong_extents, DRBD_CONG_EXTENTS_DEF) - __flg_field_def(26, DRBD_GENLA_F_MANDATORY, two_primaries, DRBD_ALLOW_TWO_PRIMARIES_DEF) - __flg_field(27, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, discard_my_data) - __flg_field_def(28, DRBD_GENLA_F_MANDATORY, tcp_cork, DRBD_TCP_CORK_DEF) - __flg_field_def(29, DRBD_GENLA_F_MANDATORY, always_asbp, DRBD_ALWAYS_ASBP_DEF) - __flg_field(30, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, dry_run) - __flg_field_def(31, DRBD_GENLA_F_MANDATORY, use_rle, DRBD_USE_RLE_DEF) + __str_field_def(2, DRBD_GENLA_F_MANDATORY, cram_hmac_alg, SHARED_SECRET_MAX) + __str_field_def(3, DRBD_GENLA_F_MANDATORY, integrity_alg, SHARED_SECRET_MAX) + __str_field_def(4, DRBD_GENLA_F_MANDATORY, verify_alg, SHARED_SECRET_MAX) + __str_field_def(5, DRBD_GENLA_F_MANDATORY, csums_alg, SHARED_SECRET_MAX) + __u32_field_def(6, DRBD_GENLA_F_MANDATORY, wire_protocol, DRBD_PROTOCOL_DEF) + __u32_field_def(7, DRBD_GENLA_F_MANDATORY, connect_int, DRBD_CONNECT_INT_DEF) + __u32_field_def(8, DRBD_GENLA_F_MANDATORY, timeout, DRBD_TIMEOUT_DEF) + __u32_field_def(9, DRBD_GENLA_F_MANDATORY, ping_int, DRBD_PING_INT_DEF) + __u32_field_def(10, DRBD_GENLA_F_MANDATORY, ping_timeo, DRBD_PING_TIMEO_DEF) + __u32_field_def(11, DRBD_GENLA_F_MANDATORY, sndbuf_size, DRBD_SNDBUF_SIZE_DEF) + __u32_field_def(12, DRBD_GENLA_F_MANDATORY, rcvbuf_size, DRBD_RCVBUF_SIZE_DEF) + __u32_field_def(13, DRBD_GENLA_F_MANDATORY, ko_count, DRBD_KO_COUNT_DEF) + __u32_field_def(14, DRBD_GENLA_F_MANDATORY, max_buffers, DRBD_MAX_BUFFERS_DEF) + __u32_field_def(15, DRBD_GENLA_F_MANDATORY, max_epoch_size, DRBD_MAX_EPOCH_SIZE_DEF) + __u32_field_def(16, DRBD_GENLA_F_MANDATORY, unplug_watermark, DRBD_UNPLUG_WATERMARK_DEF) + __u32_field_def(17, DRBD_GENLA_F_MANDATORY, after_sb_0p, DRBD_AFTER_SB_0P_DEF) + __u32_field_def(18, DRBD_GENLA_F_MANDATORY, after_sb_1p, DRBD_AFTER_SB_1P_DEF) + __u32_field_def(19, DRBD_GENLA_F_MANDATORY, after_sb_2p, DRBD_AFTER_SB_2P_DEF) + __u32_field_def(20, DRBD_GENLA_F_MANDATORY, rr_conflict, DRBD_RR_CONFLICT_DEF) + __u32_field_def(21, DRBD_GENLA_F_MANDATORY, on_congestion, DRBD_ON_CONGESTION_DEF) + __u32_field_def(22, DRBD_GENLA_F_MANDATORY, cong_fill, DRBD_CONG_FILL_DEF) + __u32_field_def(23, DRBD_GENLA_F_MANDATORY, cong_extents, DRBD_CONG_EXTENTS_DEF) + __flg_field_def(24, DRBD_GENLA_F_MANDATORY, two_primaries, DRBD_ALLOW_TWO_PRIMARIES_DEF) + __flg_field(25, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, discard_my_data) + __flg_field_def(26, DRBD_GENLA_F_MANDATORY, tcp_cork, DRBD_TCP_CORK_DEF) + __flg_field_def(27, DRBD_GENLA_F_MANDATORY, always_asbp, DRBD_ALWAYS_ASBP_DEF) + __flg_field(28, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, dry_run) + __flg_field_def(29, DRBD_GENLA_F_MANDATORY, use_rle, DRBD_USE_RLE_DEF) ) GENL_struct(DRBD_NLA_SET_ROLE_PARMS, 6, set_role_parms, -- cgit v1.2.3 From 6dff2902208364d058746ee794da4d960f6eec6f Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Tue, 28 Jun 2011 14:18:12 +0200 Subject: drbd: Rename --dry-run to --tentative drbdadm already has a --dry-run option, so this option cannot directly be passed through to drbdsetup. Rename the drbdsetup option to resolve this conflict. For backward compatibility, make --dry-run an alias of --tentative. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index b93db6c83882..e879a9324380 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -164,7 +164,7 @@ GENL_struct(DRBD_NLA_NET_CONF, 5, net_conf, __flg_field(25, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, discard_my_data) __flg_field_def(26, DRBD_GENLA_F_MANDATORY, tcp_cork, DRBD_TCP_CORK_DEF) __flg_field_def(27, DRBD_GENLA_F_MANDATORY, always_asbp, DRBD_ALWAYS_ASBP_DEF) - __flg_field(28, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, dry_run) + __flg_field(28, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, tentative) __flg_field_def(29, DRBD_GENLA_F_MANDATORY, use_rle, DRBD_USE_RLE_DEF) ) -- cgit v1.2.3 From f03c254961cce65ee2b21c4beccb6975b6f9d308 Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Mon, 20 Jun 2011 22:21:19 +0200 Subject: drbd: allow ping-timeout of up to 30 seconds Allow up to 300 centi-seconds to be configured for the "ping timeout". There may be setups where heavy congestion, huge buffers, and asymmetric bandwidth limitations may need a "huge" ping-timeout as work-around for "spurious connection loss" problems. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_limits.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 3627f760966e..82db83410f08 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -62,7 +62,7 @@ /* timeout for the ping packets.*/ #define DRBD_PING_TIMEO_MIN 1 -#define DRBD_PING_TIMEO_MAX 100 +#define DRBD_PING_TIMEO_MAX 300 #define DRBD_PING_TIMEO_DEF 5 /* max number of write requests between write barriers */ -- cgit v1.2.3 From d942ae44537669418a7cbfd916531d30513dbca8 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Tue, 31 May 2011 13:07:24 +0200 Subject: drbd: Fixes from the 8.3 development branch * commit 'ae57a0a': drbd: Only print sanitize state's warnings, if the state change happens drbd: we should write meta data updates with FLUSH FUA drbd: fix limit define, we support 1 PiByte now drbd: fix log message argument order drbd: Typo in user-visible message. drbd: Make "(rcv|snd)buf-size" and "ping-timeout" available for the proxy, too. drbd: Allow keywords to be used in multiple config sections. drbd: fix typos in comments. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_limits.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 82db83410f08..f1046b13d9f6 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -126,7 +126,7 @@ * is 1 PiB, currently. */ /* DRBD_MAX_SECTORS */ #define DRBD_DISK_SIZE_MIN 0 -#define DRBD_DISK_SIZE_MAX (16 * (2LLU << 30)) +#define DRBD_DISK_SIZE_MAX (1 * (2LLU << 40)) #define DRBD_DISK_SIZE_DEF 0 /* = disabled = no user size... */ #define DRBD_DISK_SIZE_SCALE 's' /* sectors */ -- cgit v1.2.3 From cdfda633d235028e9b27381dedb65416409e8729 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Tue, 5 Jul 2011 15:38:59 +0200 Subject: drbd: detach from frozen backing device * drbd-8.3: documentation: Documented detach's --force and disk's --disk-timeout drbd: Implemented the disk-timeout option drbd: Force flag for the detach operation drbd: Allow new IOs while the local disk in in FAILED state drbd: Bitmap IO functions can not return prematurely if the disk breaks drbd: Added a kref to bm_aio_ctx drbd: Hold a reference to ldev while doing meta-data IO drbd: Keep a reference to the bio until the completion handler finished drbd: Implemented wait_until_done_or_disk_failure() drbd: Replaced md_io_mutex by an atomic: md_io_in_use drbd: moved md_io into mdev drbd: Immediately allow completion of IOs, that wait for IO completions on a failed disk drbd: Keep a reference to barrier acked requests Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 9 ++++++++- include/linux/drbd_limits.h | 6 ++++++ 2 files changed, 14 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index e879a9324380..2e6cefefe5e5 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -128,6 +128,7 @@ GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, __flg_field_def(17, DRBD_GENLA_F_MANDATORY, disk_flushes, DRBD_DISK_FLUSHES_DEF) __flg_field_def(18, DRBD_GENLA_F_MANDATORY, disk_drain, DRBD_DISK_DRAIN_DEF) __flg_field_def(19, DRBD_GENLA_F_MANDATORY, md_flushes, DRBD_MD_FLUSHES_DEF) + __u32_field_def(20, DRBD_GENLA_F_MANDATORY, disk_timeout, DRBD_DISK_TIMEOUT_DEF) ) GENL_struct(DRBD_NLA_RESOURCE_OPTS, 4, res_opts, @@ -224,6 +225,10 @@ GENL_struct(DRBD_NLA_DISCONNECT_PARMS, 12, disconnect_parms, __flg_field(1, DRBD_GENLA_F_MANDATORY, force_disconnect) ) +GENL_struct(DRBD_NLA_DETACH_PARMS, 13, detach_parms, + __flg_field(1, DRBD_GENLA_F_MANDATORY, force_detach) +) + /* * Notifications and commands (genlmsghdr->cmd) */ @@ -335,7 +340,9 @@ GENL_op( ) GENL_op(DRBD_ADM_DETACH, 18, GENL_doit(drbd_adm_detach), - GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) + GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED) + GENL_tla_expected(DRBD_NLA_DETACH_PARMS, DRBD_GENLA_F_MANDATORY)) + GENL_op(DRBD_ADM_INVALIDATE, 19, GENL_doit(drbd_adm_invalidate), GENL_tla_expected(DRBD_NLA_CFG_CONTEXT, DRBD_F_REQUIRED)) GENL_op(DRBD_ADM_INVAL_PEER, 20, GENL_doit(drbd_adm_invalidate_peer), diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index f1046b13d9f6..ddd332db2a5d 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -50,6 +50,12 @@ #define DRBD_TIMEOUT_MAX 600 #define DRBD_TIMEOUT_DEF 60 /* 6 seconds */ + /* If backing disk takes longer than disk_timeout, mark the disk as failed */ +#define DRBD_DISK_TIMEOUT_MIN 0 /* 0 = disabled */ +#define DRBD_DISK_TIMEOUT_MAX 6000 /* 10 Minutes */ +#define DRBD_DISK_TIMEOUT_DEF 0 /* disabled */ +#define DRBD_DISK_TIMEOUT_SCALE '1' + /* active connection retries when C_WF_CONNECTION */ #define DRBD_CONNECT_INT_MIN 1 #define DRBD_CONNECT_INT_MAX 120 -- cgit v1.2.3 From d5d7ebd42250620a6da2a8f6943c024391433488 Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Tue, 5 Jul 2011 20:59:26 +0200 Subject: drbd: on attach, enforce clean meta data Detection of unclean shutdown has moved into user space. The kernel code will, whenever it updates the meta data, mark it as "unclean", and will refuse to attach to such unclean meta data. "drbdadm up" now schedules "drbdmeta apply-al", which will apply the activity log to the bitmap, and/or reinitialize it, if necessary, as well as set a "clean" indicator flag. This moves a bit code out of kernel space. As a side effect, it also prevents some 8.3 module from accidentally ignoring the 8.4 style activity log, if someone should downgrade, whether on purpose, or accidentally because he changed kernel versions without providing an 8.4 for the new kernel, and the new kernel comes with in-tree 8.3. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 161cd414b036..1e9f754b66ac 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -162,6 +162,7 @@ enum drbd_ret_code { ERR_INVALID_REQUEST = 162, ERR_NEED_APV_100 = 163, ERR_NEED_ALLOW_TWO_PRI = 164, + ERR_MD_UNCLEAN = 165, /* insert new ones above this line */ AFTER_LAST_ERR_CODE @@ -321,7 +322,8 @@ extern const char *drbd_set_st_err_str(enum drbd_state_rv); #define MDF_FULL_SYNC (1 << 3) #define MDF_WAS_UP_TO_DATE (1 << 4) #define MDF_PEER_OUT_DATED (1 << 5) -#define MDF_CRASHED_PRIMARY (1 << 6) +#define MDF_CRASHED_PRIMARY (1 << 6) +#define MDF_AL_CLEAN (1 << 7) enum drbd_uuid_index { UI_CURRENT, @@ -341,10 +343,16 @@ enum drbd_timeout_flag { #define UUID_JUST_CREATED ((__u64)4) +/* magic numbers used in meta data and network packets */ #define DRBD_MAGIC 0x83740267 #define DRBD_MAGIC_BIG 0x835a #define DRBD_MAGIC_100 0x8620ec20 +#define DRBD_MD_MAGIC_07 (DRBD_MAGIC+3) +#define DRBD_MD_MAGIC_08 (DRBD_MAGIC+4) +#define DRBD_MD_MAGIC_84_UNCLEAN (DRBD_MAGIC+5) + + /* how I came up with this magic? * base64 decode "actlog==" ;) */ #define DRBD_AL_MAGIC 0x69cb65a2 -- cgit v1.2.3 From 65d94927e036cd8e8e1406fa7fc387b4ae730159 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Wed, 13 Jul 2011 10:24:51 +0200 Subject: drbd: Changed some defaults * Enabled the resync controller, with a fill target of 50Kib. That gives reasonable resync speeds without tuning. A much better default than the 250KiB/s fixed. * Enable bitmap compression. It is save to use, and most people have more CPU power than network bandwidth. * ko-count of 7: Abort a connection if the peer fails to process a write request within 42 seconds. * al-extents of 1237: ~5 GiB seems to be a much more sane default these days. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_limits.h | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index ddd332db2a5d..defdebfecb72 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -16,7 +16,7 @@ #define DEBUG_RANGE_CHECK 0 #define DRBD_MINOR_COUNT_MIN 1 -#define DRBD_MINOR_COUNT_MAX 256 +#define DRBD_MINOR_COUNT_MAX (1U << 20) #define DRBD_MINOR_COUNT_DEF 32 #define DRBD_VOLUME_MAX 65535 @@ -99,7 +99,7 @@ * 200 should be more than enough even for very short timeouts */ #define DRBD_KO_COUNT_MIN 0 #define DRBD_KO_COUNT_MAX 200 -#define DRBD_KO_COUNT_DEF 0 +#define DRBD_KO_COUNT_DEF 7 /* } */ /* syncer { */ @@ -117,7 +117,7 @@ * 919 * 7 = 6433 */ #define DRBD_AL_EXTENTS_MIN 7 #define DRBD_AL_EXTENTS_MAX 6433 -#define DRBD_AL_EXTENTS_DEF 127 +#define DRBD_AL_EXTENTS_DEF 1237 #define DRBD_MINOR_NUMBER_MIN -1 #define DRBD_MINOR_NUMBER_MAX (1<<30) @@ -151,7 +151,7 @@ #define DRBD_C_PLAN_AHEAD_MIN 0 #define DRBD_C_PLAN_AHEAD_MAX 300 -#define DRBD_C_PLAN_AHEAD_DEF 0 /* RS rate controller disabled by default */ +#define DRBD_C_PLAN_AHEAD_DEF 20 #define DRBD_C_DELAY_TARGET_MIN 1 #define DRBD_C_DELAY_TARGET_MAX 100 @@ -159,7 +159,7 @@ #define DRBD_C_FILL_TARGET_MIN 0 #define DRBD_C_FILL_TARGET_MAX (1<<20) /* 500MByte in sec */ -#define DRBD_C_FILL_TARGET_DEF 0 /* By default disabled -> controlled by delay_target */ +#define DRBD_C_FILL_TARGET_DEF 100 /* Try to place 50KiB in socket send buffer during resync */ #define DRBD_C_MAX_RATE_MIN 250 /* kByte/sec */ #define DRBD_C_MAX_RATE_MAX (4 << 20) @@ -167,7 +167,7 @@ #define DRBD_C_MIN_RATE_MIN 0 /* kByte/sec */ #define DRBD_C_MIN_RATE_MAX (4 << 20) -#define DRBD_C_MIN_RATE_DEF 4096 +#define DRBD_C_MIN_RATE_DEF 250 #define DRBD_CONG_FILL_MIN 0 #define DRBD_CONG_FILL_MAX (10<<21) /* 10GByte in sectors */ @@ -187,6 +187,6 @@ #define DRBD_ALLOW_TWO_PRIMARIES_DEF 0 #define DRBD_ALWAYS_ASBP_DEF 0 -#define DRBD_USE_RLE_DEF 0 +#define DRBD_USE_RLE_DEF 1 #endif -- cgit v1.2.3 From 32bdb64038ba3127245912dae2cc8a450bb1d705 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Mon, 9 May 2011 18:26:20 +0200 Subject: drbd: Define scale factors in a single place Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_limits.h | 29 +++++++++++++++++++++++++++-- 1 file changed, 27 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index defdebfecb72..cd3565cfed44 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -18,29 +18,35 @@ #define DRBD_MINOR_COUNT_MIN 1 #define DRBD_MINOR_COUNT_MAX (1U << 20) #define DRBD_MINOR_COUNT_DEF 32 +#define DRBD_MINOR_COUNT_SCALE '1' #define DRBD_VOLUME_MAX 65535 #define DRBD_DIALOG_REFRESH_MIN 0 #define DRBD_DIALOG_REFRESH_MAX 600 +#define DRBD_DIALOG_REFRESH_SCALE '1' /* valid port number */ #define DRBD_PORT_MIN 1 #define DRBD_PORT_MAX 0xffff +#define DRBD_PORT_SCALE '1' /* startup { */ /* if you want more than 3.4 days, disable */ #define DRBD_WFC_TIMEOUT_MIN 0 #define DRBD_WFC_TIMEOUT_MAX 300000 #define DRBD_WFC_TIMEOUT_DEF 0 +#define DRBD_WFC_TIMEOUT_SCALE '1' #define DRBD_DEGR_WFC_TIMEOUT_MIN 0 #define DRBD_DEGR_WFC_TIMEOUT_MAX 300000 #define DRBD_DEGR_WFC_TIMEOUT_DEF 0 +#define DRBD_DEGR_WFC_TIMEOUT_SCALE '1' #define DRBD_OUTDATED_WFC_TIMEOUT_MIN 0 #define DRBD_OUTDATED_WFC_TIMEOUT_MAX 300000 #define DRBD_OUTDATED_WFC_TIMEOUT_DEF 0 +#define DRBD_OUTDATED_WFC_TIMEOUT_SCALE '1' /* }*/ /* net { */ @@ -49,6 +55,7 @@ #define DRBD_TIMEOUT_MIN 1 #define DRBD_TIMEOUT_MAX 600 #define DRBD_TIMEOUT_DEF 60 /* 6 seconds */ +#define DRBD_TIMEOUT_SCALE '1' /* If backing disk takes longer than disk_timeout, mark the disk as failed */ #define DRBD_DISK_TIMEOUT_MIN 0 /* 0 = disabled */ @@ -60,46 +67,55 @@ #define DRBD_CONNECT_INT_MIN 1 #define DRBD_CONNECT_INT_MAX 120 #define DRBD_CONNECT_INT_DEF 10 /* seconds */ +#define DRBD_CONNECT_INT_SCALE '1' /* keep-alive probes when idle */ #define DRBD_PING_INT_MIN 1 #define DRBD_PING_INT_MAX 120 #define DRBD_PING_INT_DEF 10 +#define DRBD_PING_INT_SCALE '1' /* timeout for the ping packets.*/ #define DRBD_PING_TIMEO_MIN 1 #define DRBD_PING_TIMEO_MAX 300 #define DRBD_PING_TIMEO_DEF 5 +#define DRBD_PING_TIMEO_SCALE '1' /* max number of write requests between write barriers */ #define DRBD_MAX_EPOCH_SIZE_MIN 1 #define DRBD_MAX_EPOCH_SIZE_MAX 20000 #define DRBD_MAX_EPOCH_SIZE_DEF 2048 +#define DRBD_MAX_EPOCH_SIZE_SCALE '1' /* I don't think that a tcp send buffer of more than 10M is useful */ #define DRBD_SNDBUF_SIZE_MIN 0 #define DRBD_SNDBUF_SIZE_MAX (10<<20) #define DRBD_SNDBUF_SIZE_DEF 0 +#define DRBD_SNDBUF_SIZE_SCALE '1' #define DRBD_RCVBUF_SIZE_MIN 0 #define DRBD_RCVBUF_SIZE_MAX (10<<20) #define DRBD_RCVBUF_SIZE_DEF 0 +#define DRBD_RCVBUF_SIZE_SCALE '1' /* @4k PageSize -> 128kB - 512MB */ #define DRBD_MAX_BUFFERS_MIN 32 #define DRBD_MAX_BUFFERS_MAX 131072 #define DRBD_MAX_BUFFERS_DEF 2048 +#define DRBD_MAX_BUFFERS_SCALE '1' /* @4k PageSize -> 4kB - 512MB */ #define DRBD_UNPLUG_WATERMARK_MIN 1 #define DRBD_UNPLUG_WATERMARK_MAX 131072 #define DRBD_UNPLUG_WATERMARK_DEF (DRBD_MAX_BUFFERS_DEF/16) +#define DRBD_UNPLUG_WATERMARK_SCALE '1' /* 0 is disabled. * 200 should be more than enough even for very short timeouts */ #define DRBD_KO_COUNT_MIN 0 #define DRBD_KO_COUNT_MAX 200 #define DRBD_KO_COUNT_DEF 7 +#define DRBD_KO_COUNT_SCALE '1' /* } */ /* syncer { */ @@ -118,6 +134,7 @@ #define DRBD_AL_EXTENTS_MIN 7 #define DRBD_AL_EXTENTS_MAX 6433 #define DRBD_AL_EXTENTS_DEF 1237 +#define DRBD_AL_EXTENTS_SCALE '1' #define DRBD_MINOR_NUMBER_MIN -1 #define DRBD_MINOR_NUMBER_MAX (1<<30) @@ -148,34 +165,42 @@ #define DRBD_MAX_BIO_BVECS_MIN 0 #define DRBD_MAX_BIO_BVECS_MAX 128 #define DRBD_MAX_BIO_BVECS_DEF 0 +#define DRBD_MAX_BIO_BVECS_SCALE '1' #define DRBD_C_PLAN_AHEAD_MIN 0 #define DRBD_C_PLAN_AHEAD_MAX 300 #define DRBD_C_PLAN_AHEAD_DEF 20 +#define DRBD_C_PLAN_AHEAD_SCALE '1' #define DRBD_C_DELAY_TARGET_MIN 1 #define DRBD_C_DELAY_TARGET_MAX 100 #define DRBD_C_DELAY_TARGET_DEF 10 +#define DRBD_C_DELAY_TARGET_SCALE '1' #define DRBD_C_FILL_TARGET_MIN 0 #define DRBD_C_FILL_TARGET_MAX (1<<20) /* 500MByte in sec */ #define DRBD_C_FILL_TARGET_DEF 100 /* Try to place 50KiB in socket send buffer during resync */ +#define DRBD_C_FILL_TARGET_SCALE 's' /* sectors */ -#define DRBD_C_MAX_RATE_MIN 250 /* kByte/sec */ +#define DRBD_C_MAX_RATE_MIN 250 #define DRBD_C_MAX_RATE_MAX (4 << 20) #define DRBD_C_MAX_RATE_DEF 102400 +#define DRBD_C_MAX_RATE_SCALE 'k' /* kilobytes */ -#define DRBD_C_MIN_RATE_MIN 0 /* kByte/sec */ +#define DRBD_C_MIN_RATE_MIN 0 #define DRBD_C_MIN_RATE_MAX (4 << 20) #define DRBD_C_MIN_RATE_DEF 250 +#define DRBD_C_MIN_RATE_SCALE 'k' /* kilobytes */ #define DRBD_CONG_FILL_MIN 0 #define DRBD_CONG_FILL_MAX (10<<21) /* 10GByte in sectors */ #define DRBD_CONG_FILL_DEF 0 +#define DRBD_CONG_FILL_SCALE 's' /* sectors */ #define DRBD_CONG_EXTENTS_MIN DRBD_AL_EXTENTS_MIN #define DRBD_CONG_EXTENTS_MAX DRBD_AL_EXTENTS_MAX #define DRBD_CONG_EXTENTS_DEF DRBD_AL_EXTENTS_DEF +#define DRBD_CONG_EXTENTS_SCALE DRBD_AL_EXTENTS_SCALE #define DRBD_PROTOCOL_DEF DRBD_PROT_C -- cgit v1.2.3 From 0317d9ecbc9bac43642b4aa70e3e1106f4fd26a1 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Wed, 13 Jul 2011 13:40:30 +0200 Subject: drbd: Fix the maximum accepted minor device number The maximum minor device number allowed by the kernel is (1<<20 - 1). Reject device numbers higher than that to earlier catch possible errors. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_limits.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index cd3565cfed44..7d956e91ae7b 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -137,7 +137,7 @@ #define DRBD_AL_EXTENTS_SCALE '1' #define DRBD_MINOR_NUMBER_MIN -1 -#define DRBD_MINOR_NUMBER_MAX (1<<30) +#define DRBD_MINOR_NUMBER_MAX ((1 << 20) - 1) #define DRBD_MINOR_NUMBER_DEF -1 #define DRBD_MINOR_NUMBER_SCALE '1' -- cgit v1.2.3 From b80c043327ea4faac62a329a1d35f16c47a5128e Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Mon, 18 Jul 2011 11:09:17 +0200 Subject: drbd: The minor_count module parameter is only a hint nowadays * The max of minor_count is 255 * In drbdadm count the number of minors, instead of finding the highest minor number * No longer us the magic in the init script Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_limits.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 7d956e91ae7b..6d0a24331ed2 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -16,7 +16,7 @@ #define DEBUG_RANGE_CHECK 0 #define DRBD_MINOR_COUNT_MIN 1 -#define DRBD_MINOR_COUNT_MAX (1U << 20) +#define DRBD_MINOR_COUNT_MAX 255 #define DRBD_MINOR_COUNT_DEF 32 #define DRBD_MINOR_COUNT_SCALE '1' -- cgit v1.2.3 From 380207d08e7c4d1b19c0323777278992b4fbf9d6 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Fri, 11 Nov 2011 12:31:20 +0100 Subject: drbd: Load balancing of read requests New config option for the disk secition "read-balancing", with the values: prefer-local, prefer-remote, round-robin, when-congested-remote. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 8 ++++++++ include/linux/drbd_genl.h | 1 + include/linux/drbd_limits.h | 1 + 3 files changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 1e9f754b66ac..157ba3d74dc7 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -102,6 +102,14 @@ enum drbd_on_congestion { OC_DISCONNECT, }; +enum drbd_read_balancing { + RB_PREFER_LOCAL, + RB_PREFER_REMOTE, + RB_ROUND_ROBIN, + RB_LEAST_PENDING, + RB_CONGESTED_REMOTE, +}; + /* KEEP the order, do not delete or insert. Only append. */ enum drbd_ret_code { ERR_CODE_BASE = 100, diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 2e6cefefe5e5..826008f297fe 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -129,6 +129,7 @@ GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, __flg_field_def(18, DRBD_GENLA_F_MANDATORY, disk_drain, DRBD_DISK_DRAIN_DEF) __flg_field_def(19, DRBD_GENLA_F_MANDATORY, md_flushes, DRBD_MD_FLUSHES_DEF) __u32_field_def(20, DRBD_GENLA_F_MANDATORY, disk_timeout, DRBD_DISK_TIMEOUT_DEF) + __u32_field_def(21, 0 /* OPTIONAL */, read_balancing, DRBD_READ_BALANCING_DEF) ) GENL_struct(DRBD_NLA_RESOURCE_OPTS, 4, res_opts, diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 6d0a24331ed2..17ef66a5c114 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -161,6 +161,7 @@ #define DRBD_RR_CONFLICT_DEF ASB_DISCONNECT #define DRBD_ON_NO_DATA_DEF OND_IO_ERROR #define DRBD_ON_CONGESTION_DEF OC_BLOCK +#define DRBD_READ_BALANCING_DEF RB_PREFER_LOCAL #define DRBD_MAX_BIO_BVECS_MIN 0 #define DRBD_MAX_BIO_BVECS_MAX 128 -- cgit v1.2.3 From d60de03a6694302b691bdf858ede9cbdfb7112d6 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Thu, 17 Nov 2011 10:12:31 +0100 Subject: drbd: Load balancing method: striping Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 157ba3d74dc7..1e86156c10f7 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -108,6 +108,12 @@ enum drbd_read_balancing { RB_ROUND_ROBIN, RB_LEAST_PENDING, RB_CONGESTED_REMOTE, + RB_32K_STRIPING, + RB_64K_STRIPING, + RB_128K_STRIPING, + RB_256K_STRIPING, + RB_512K_STRIPING, + RB_1M_STRIPING, }; /* KEEP the order, do not delete or insert. Only append. */ -- cgit v1.2.3 From 26ec92871be1e6bd48d0be9ab38ee1ebbeea49f1 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Wed, 11 Jul 2012 20:36:03 +0200 Subject: drbd: Stop using NLA_PUT*(). These macros no longer exist in kernel version v3.5-rc1. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/genl_magic_func.h | 8 +++++--- include/linux/genl_magic_struct.h | 16 ++++++++-------- 2 files changed, 13 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/genl_magic_func.h b/include/linux/genl_magic_func.h index 0b8a88e2e83e..023bc346b877 100644 --- a/include/linux/genl_magic_func.h +++ b/include/linux/genl_magic_func.h @@ -367,7 +367,8 @@ static inline int s_name ## _to_unpriv_skb(struct sk_buff *skb, \ __is_signed) \ if (!exclude_sensitive || !((attr_flag) & DRBD_F_SENSITIVE)) { \ DPRINT_FIELD(">>", nla_type, name, s, NULL); \ - __put(skb, attr_nr, s->name); \ + if (__put(skb, attr_nr, s->name)) \ + goto nla_put_failure; \ } #undef __array @@ -375,9 +376,10 @@ static inline int s_name ## _to_unpriv_skb(struct sk_buff *skb, \ __get, __put, __is_signed) \ if (!exclude_sensitive || !((attr_flag) & DRBD_F_SENSITIVE)) { \ DPRINT_ARRAY(">>",nla_type, name, s, NULL); \ - __put(skb, attr_nr, min_t(int, maxlen, \ + if (__put(skb, attr_nr, min_t(int, maxlen, \ s->name ## _len + (nla_type == NLA_NUL_STRING)),\ - s->name); \ + s->name)) \ + goto nla_put_failure; \ } #include GENL_MAGIC_INCLUDE_FILE diff --git a/include/linux/genl_magic_struct.h b/include/linux/genl_magic_struct.h index 1d0bd79e27b3..eecd19b37001 100644 --- a/include/linux/genl_magic_struct.h +++ b/include/linux/genl_magic_struct.h @@ -65,28 +65,28 @@ extern void CONCAT_(GENL_MAGIC_FAMILY, _genl_unregister)(void); /* possible field types */ #define __flg_field(attr_nr, attr_flag, name) \ __field(attr_nr, attr_flag, name, NLA_U8, char, \ - nla_get_u8, NLA_PUT_U8, false) + nla_get_u8, nla_put_u8, false) #define __u8_field(attr_nr, attr_flag, name) \ __field(attr_nr, attr_flag, name, NLA_U8, unsigned char, \ - nla_get_u8, NLA_PUT_U8, false) + nla_get_u8, nla_put_u8, false) #define __u16_field(attr_nr, attr_flag, name) \ __field(attr_nr, attr_flag, name, NLA_U16, __u16, \ - nla_get_u16, NLA_PUT_U16, false) + nla_get_u16, nla_put_u16, false) #define __u32_field(attr_nr, attr_flag, name) \ __field(attr_nr, attr_flag, name, NLA_U32, __u32, \ - nla_get_u32, NLA_PUT_U32, false) + nla_get_u32, nla_put_u32, false) #define __s32_field(attr_nr, attr_flag, name) \ __field(attr_nr, attr_flag, name, NLA_U32, __s32, \ - nla_get_u32, NLA_PUT_U32, true) + nla_get_u32, nla_put_u32, true) #define __u64_field(attr_nr, attr_flag, name) \ __field(attr_nr, attr_flag, name, NLA_U64, __u64, \ - nla_get_u64, NLA_PUT_U64, false) + nla_get_u64, nla_put_u64, false) #define __str_field(attr_nr, attr_flag, name, maxlen) \ __array(attr_nr, attr_flag, name, NLA_NUL_STRING, char, maxlen, \ - nla_strlcpy, NLA_PUT, false) + nla_strlcpy, nla_put, false) #define __bin_field(attr_nr, attr_flag, name, maxlen) \ __array(attr_nr, attr_flag, name, NLA_BINARY, char, maxlen, \ - nla_memcpy, NLA_PUT, false) + nla_memcpy, nla_put, false) /* fields with default values */ #define __flg_field_def(attr_nr, attr_flag, name, default) \ -- cgit v1.2.3 From 9a51ab1c1b3c1e21f076cdd571bbe6ca7d1b504c Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Mon, 20 Feb 2012 21:53:28 +0100 Subject: drbd: New disk option al-updates By disabling al-updates one might increase performace. The price for that is that in case a crashed primary (that had al-updates disabled) is reintegraded, it will receive a full-resync instead of a bitmap based resync. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 1 + include/linux/drbd_genl.h | 3 +++ include/linux/drbd_limits.h | 1 + 3 files changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 1e86156c10f7..36ae7dd28d90 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -338,6 +338,7 @@ extern const char *drbd_set_st_err_str(enum drbd_state_rv); #define MDF_PEER_OUT_DATED (1 << 5) #define MDF_CRASHED_PRIMARY (1 << 6) #define MDF_AL_CLEAN (1 << 7) +#define MDF_AL_DISABLED (1 << 8) enum drbd_uuid_index { UI_CURRENT, diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 826008f297fe..92ec4b50a885 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -130,6 +130,8 @@ GENL_struct(DRBD_NLA_DISK_CONF, 3, disk_conf, __flg_field_def(19, DRBD_GENLA_F_MANDATORY, md_flushes, DRBD_MD_FLUSHES_DEF) __u32_field_def(20, DRBD_GENLA_F_MANDATORY, disk_timeout, DRBD_DISK_TIMEOUT_DEF) __u32_field_def(21, 0 /* OPTIONAL */, read_balancing, DRBD_READ_BALANCING_DEF) + /* 9: __u32_field_def(22, DRBD_GENLA_F_MANDATORY, unplug_watermark, DRBD_UNPLUG_WATERMARK_DEF) */ + __flg_field_def(23, 0 /* OPTIONAL */, al_updates, DRBD_AL_UPDATES_DEF) ) GENL_struct(DRBD_NLA_RESOURCE_OPTS, 4, res_opts, @@ -168,6 +170,7 @@ GENL_struct(DRBD_NLA_NET_CONF, 5, net_conf, __flg_field_def(27, DRBD_GENLA_F_MANDATORY, always_asbp, DRBD_ALWAYS_ASBP_DEF) __flg_field(28, DRBD_GENLA_F_MANDATORY | DRBD_F_INVARIANT, tentative) __flg_field_def(29, DRBD_GENLA_F_MANDATORY, use_rle, DRBD_USE_RLE_DEF) + /* 9: __u32_field_def(30, DRBD_GENLA_F_MANDATORY, fencing_policy, DRBD_FENCING_DEF) */ ) GENL_struct(DRBD_NLA_SET_ROLE_PARMS, 6, set_role_parms, diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 17ef66a5c114..1fa19c5f5e64 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -210,6 +210,7 @@ #define DRBD_DISK_DRAIN_DEF 1 #define DRBD_MD_FLUSHES_DEF 1 #define DRBD_TCP_CORK_DEF 1 +#define DRBD_AL_UPDATES_DEF 1 #define DRBD_ALLOW_TWO_PRIMARIES_DEF 0 #define DRBD_ALWAYS_ASBP_DEF 0 -- cgit v1.2.3 From 37be2f59d3149b95afaeeeff94edde2c07f165d2 Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Thu, 8 Nov 2012 11:22:46 -0500 Subject: ext4: remove ext4_handle_release_buffer() ext4_handle_release_buffer() was intended to remove journal write access from a buffer, but it doesn't actually do anything at all other than add a BUFFER_TRACE point, but it's not reliably used for that either. Remove all the associated dead code. Signed-off-by: Eric Sandeen Signed-off-by: "Theodore Ts'o" Reviewed-by: Carlos Maiolino --- include/linux/jbd2.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index 3efc43f3f162..de7f55682088 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -1096,7 +1096,6 @@ extern int jbd2_journal_get_undo_access(handle_t *, struct buffer_head *); void jbd2_journal_set_triggers(struct buffer_head *, struct jbd2_buffer_trigger_type *type); extern int jbd2_journal_dirty_metadata (handle_t *, struct buffer_head *); -extern void jbd2_journal_release_buffer (handle_t *, struct buffer_head *); extern int jbd2_journal_forget (handle_t *, struct buffer_head *); extern void journal_sync_buffer (struct buffer_head *); extern void jbd2_journal_invalidatepage(journal_t *, -- cgit v1.2.3 From fd47d3e1c2949838e858379aaf2bc20647be2912 Mon Sep 17 00:00:00 2001 From: Behan Webster Date: Thu, 8 Nov 2012 11:24:46 -0500 Subject: jbd2: remove VLAIS usage from JBD2 code The use of variable length arrays in structs (VLAIS) in the Linux Kernel code precludes the use of compilers which don't implement VLAIS (for instance the Clang compiler). Since ctx is always a 32-bit CRC, hard coding a size of 4 bytes accomplishes the same thing without the use of VLAIS. This is the same technique already employed in fs/ext4/ext4.h Signed-off-by: Mark Charlebois Signed-off-by: Behan Webster Signed-off-by: "Theodore Ts'o" --- include/linux/jbd2.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index de7f55682088..1be23d9fdacb 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -1302,15 +1302,21 @@ static inline int jbd_space_needed(journal_t *journal) extern int jbd_blocks_per_page(struct inode *inode); +/* JBD uses a CRC32 checksum */ +#define JBD_MAX_CHECKSUM_SIZE 4 + static inline u32 jbd2_chksum(journal_t *journal, u32 crc, const void *address, unsigned int length) { struct { struct shash_desc shash; - char ctx[crypto_shash_descsize(journal->j_chksum_driver)]; + char ctx[JBD_MAX_CHECKSUM_SIZE]; } desc; int err; + BUG_ON(crypto_shash_descsize(journal->j_chksum_driver) > + JBD_MAX_CHECKSUM_SIZE); + desc.shash.tfm = journal->j_chksum_driver; desc.shash.flags = 0; *(u32 *)desc.ctx = crc; -- cgit v1.2.3 From 58ffa580a748dd16b1e5ab260bea39cdbd1e94ef Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Thu, 26 Jul 2012 14:09:49 +0200 Subject: drbd: introduce stop-sector to online verify We now can schedule only a specific range of sectors for online verify, or interrupt a running verify without interrupting the connection. Had to bump the protocol version differently, we are now 101. Added verify_can_do_stop_sector() { protocol >= 97 && protocol != 100; } Also, the return value convention for worker callbacks has changed, we returned "true/false" for "keep the connection up" in 8.3, we return 0 for success and <= for failure in 8.4. Affected: receive_state() Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 2 +- include/linux/drbd_genl.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 36ae7dd28d90..5171c3530886 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -55,7 +55,7 @@ extern const char *drbd_buildtag(void); #define REL_VERSION "8.3.11" #define API_VERSION 88 #define PRO_VERSION_MIN 86 -#define PRO_VERSION_MAX 100 +#define PRO_VERSION_MAX 101 enum drbd_io_error_p { diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 92ec4b50a885..9430e9ab37a8 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -215,6 +215,7 @@ GENL_struct(DRBD_NLA_STATE_INFO, 8, state_info, GENL_struct(DRBD_NLA_START_OV_PARMS, 9, start_ov_parms, __u64_field(1, DRBD_GENLA_F_MANDATORY, ov_start_sector) + __u64_field(2, DRBD_GENLA_F_MANDATORY, ov_stop_sector) ) GENL_struct(DRBD_NLA_NEW_C_UUID_PARMS, 10, new_c_uuid_parms, -- cgit v1.2.3 From 3174f8c5045ad247563434c4b4897bd89313eafc Mon Sep 17 00:00:00 2001 From: Philipp Marek Date: Sat, 3 Mar 2012 21:04:30 +0100 Subject: drbd: pass some more information to userspace. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd_genl.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h index 9430e9ab37a8..d0d8fac8a6e4 100644 --- a/include/linux/drbd_genl.h +++ b/include/linux/drbd_genl.h @@ -211,6 +211,16 @@ GENL_struct(DRBD_NLA_STATE_INFO, 8, state_info, /* for pre and post notifications of helper execution */ __str_field(13, DRBD_GENLA_F_MANDATORY, helper, 32) __u32_field(14, DRBD_GENLA_F_MANDATORY, helper_exit_code) + + __u64_field(15, 0, send_cnt) + __u64_field(16, 0, recv_cnt) + __u64_field(17, 0, read_cnt) + __u64_field(18, 0, writ_cnt) + __u64_field(19, 0, al_writ_cnt) + __u64_field(20, 0, bm_writ_cnt) + __u32_field(21, 0, ap_bio_cnt) + __u32_field(22, 0, ap_pending_cnt) + __u32_field(23, 0, rs_pending_cnt) ) GENL_struct(DRBD_NLA_START_OV_PARMS, 9, start_ov_parms, -- cgit v1.2.3 From eb12010e9af119c84e6b2214064a98681027e0e3 Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Wed, 1 Aug 2012 12:46:20 +0200 Subject: drbd: disambiguation, s/ERR_DISCARD/ERR_DISCARD_IMPOSSIBLE/ If for some reason (typically "split-brained" cluster manager) drbd replica data has diverged, we can chose a victim, and reconnect using "--discard-my-data", causing the victim to become sync-target, fetching all changed blocks from the peer. If we are Primary, we are potentially in use, and we refuse to "roll back" changes to the data below the page cache and other users. Rename the error symbol for this to ERR_DISCARD_IMPOSSIBLE. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 5171c3530886..0b93e5e2e064 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -136,7 +136,7 @@ enum drbd_ret_code { ERR_AUTH_ALG = 120, ERR_AUTH_ALG_ND = 121, ERR_NOMEM = 122, - ERR_DISCARD = 123, + ERR_DISCARD_IMPOSSIBLE = 123, ERR_DISK_CONFIGURED = 124, ERR_NET_CONFIGURED = 125, ERR_MANDATORY_TAG = 126, -- cgit v1.2.3 From 328e0f125bf41f4f33f684db22015f92cb44fe56 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Fri, 19 Oct 2012 14:37:47 +0200 Subject: drbd: Broadcast sync progress no more often than once per second Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- include/linux/drbd.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 0b93e5e2e064..0c5a18ec322c 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -52,8 +52,8 @@ #endif extern const char *drbd_buildtag(void); -#define REL_VERSION "8.3.11" -#define API_VERSION 88 +#define REL_VERSION "8.4.2" +#define API_VERSION 1 #define PRO_VERSION_MIN 86 #define PRO_VERSION_MAX 101 -- cgit v1.2.3 From a8638030f668884720b8f4456448d0ce33952b05 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 9 Nov 2012 09:12:29 -0800 Subject: cgroup: add cgroup_subsys->post_create() Currently, there's no way for a controller to find out whether a new cgroup finished all ->create() allocatinos successfully and is considered "live" by cgroup. This becomes a problem later when we add generic descendants walking to cgroup which can be used by controllers as controllers don't have a synchronization point where it can synchronize against new cgroups appearing in such walks. This patch adds ->post_create(). It's called after all ->create() succeeded and the cgroup is linked into the generic cgroup hierarchy. This plays the counterpart of ->pre_destroy(). When used in combination with the to-be-added generic descendant iterators, ->post_create() can be used to implement reliable state inheritance. It will be explained with the descendant iterators. v2: Added a paragraph about its future use w/ descendant iterators per Michal. v3: Forgot to add ->post_create() invocation to cgroup_load_subsys(). Fixed. Signed-off-by: Tejun Heo Acked-by: Michal Hocko Reviewed-by: KAMEZAWA Hiroyuki Acked-by: Li Zefan Cc: Glauber Costa --- include/linux/cgroup.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index fe876a77031a..b4421221111d 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -438,6 +438,7 @@ int cgroup_taskset_size(struct cgroup_taskset *tset); struct cgroup_subsys { struct cgroup_subsys_state *(*create)(struct cgroup *cgrp); + void (*post_create)(struct cgroup *cgrp); void (*pre_destroy)(struct cgroup *cgrp); void (*destroy)(struct cgroup *cgrp); int (*can_attach)(struct cgroup *cgrp, struct cgroup_taskset *tset); -- cgit v1.2.3 From eb6fd5040ee799009173daa49c3e7aa0362167c9 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 9 Nov 2012 09:12:29 -0800 Subject: cgroup: use rculist ops for cgroup->children Use RCU safe list operations for cgroup->children. This will be used to implement cgroup children / descendant walking which can be used by controllers. Note that cgroup_create() now puts a new cgroup at the end of the ->children list instead of head. This isn't strictly necessary but is done so that the iteration order is more conventional. Signed-off-by: Tejun Heo Reviewed-by: Michal Hocko Reviewed-by: KAMEZAWA Hiroyuki Acked-by: Li Zefan --- include/linux/cgroup.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index b4421221111d..90c33ebdd6bc 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include -- cgit v1.2.3 From 574bd9f7c7c1d32f52dea5488018a6ff79031e22 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 9 Nov 2012 09:12:29 -0800 Subject: cgroup: implement generic child / descendant walk macros Currently, cgroup doesn't provide any generic helper for walking a given cgroup's children or descendants. This patch adds the following three macros. * cgroup_for_each_child() - walk immediate children of a cgroup. * cgroup_for_each_descendant_pre() - visit all descendants of a cgroup in pre-order tree traversal. * cgroup_for_each_descendant_post() - visit all descendants of a cgroup in post-order tree traversal. All three only require the user to hold RCU read lock during traversal. Verifying that each iterated cgroup is online is the responsibility of the user. When used with proper synchronization, cgroup_for_each_descendant_pre() can be used to propagate state updates to descendants in reliable way. See comments for details. v2: s/config/state/ in commit message and comments per Michal. More documentation on synchronization rules. Signed-off-by: Tejun Heo Reviewed-by: KAMEZAWA Hiroyuki Reviewed-by: Michal Hocko Acked-by: Li Zefan --- include/linux/cgroup.h | 94 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 94 insertions(+) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 90c33ebdd6bc..8f64b459fbd4 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -534,6 +534,100 @@ static inline struct cgroup* task_cgroup(struct task_struct *task, return task_subsys_state(task, subsys_id)->cgroup; } +/** + * cgroup_for_each_child - iterate through children of a cgroup + * @pos: the cgroup * to use as the loop cursor + * @cgroup: cgroup whose children to walk + * + * Walk @cgroup's children. Must be called under rcu_read_lock(). A child + * cgroup which hasn't finished ->post_create() or already has finished + * ->pre_destroy() may show up during traversal and it's each subsystem's + * responsibility to verify that each @pos is alive. + * + * If a subsystem synchronizes against the parent in its ->post_create() + * and before starting iterating, a cgroup which finished ->post_create() + * is guaranteed to be visible in the future iterations. + */ +#define cgroup_for_each_child(pos, cgroup) \ + list_for_each_entry_rcu(pos, &(cgroup)->children, sibling) + +struct cgroup *cgroup_next_descendant_pre(struct cgroup *pos, + struct cgroup *cgroup); + +/** + * cgroup_for_each_descendant_pre - pre-order walk of a cgroup's descendants + * @pos: the cgroup * to use as the loop cursor + * @cgroup: cgroup whose descendants to walk + * + * Walk @cgroup's descendants. Must be called under rcu_read_lock(). A + * descendant cgroup which hasn't finished ->post_create() or already has + * finished ->pre_destroy() may show up during traversal and it's each + * subsystem's responsibility to verify that each @pos is alive. + * + * If a subsystem synchronizes against the parent in its ->post_create() + * and before starting iterating, and synchronizes against @pos on each + * iteration, any descendant cgroup which finished ->post_create() is + * guaranteed to be visible in the future iterations. + * + * In other words, the following guarantees that a descendant can't escape + * state updates of its ancestors. + * + * my_post_create(@cgrp) + * { + * Lock @cgrp->parent and @cgrp; + * Inherit state from @cgrp->parent; + * Unlock both. + * } + * + * my_update_state(@cgrp) + * { + * Lock @cgrp; + * Update @cgrp's state; + * Unlock @cgrp; + * + * cgroup_for_each_descendant_pre(@pos, @cgrp) { + * Lock @pos; + * Verify @pos is alive and inherit state from @pos->parent; + * Unlock @pos; + * } + * } + * + * As long as the inheriting step, including checking the parent state, is + * enclosed inside @pos locking, double-locking the parent isn't necessary + * while inheriting. The state update to the parent is guaranteed to be + * visible by walking order and, as long as inheriting operations to the + * same @pos are atomic to each other, multiple updates racing each other + * still result in the correct state. It's guaranateed that at least one + * inheritance happens for any cgroup after the latest update to its + * parent. + * + * If checking parent's state requires locking the parent, each inheriting + * iteration should lock and unlock both @pos->parent and @pos. + * + * Alternatively, a subsystem may choose to use a single global lock to + * synchronize ->post_create() and ->pre_destroy() against tree-walking + * operations. + */ +#define cgroup_for_each_descendant_pre(pos, cgroup) \ + for (pos = cgroup_next_descendant_pre(NULL, (cgroup)); (pos); \ + pos = cgroup_next_descendant_pre((pos), (cgroup))) + +struct cgroup *cgroup_next_descendant_post(struct cgroup *pos, + struct cgroup *cgroup); + +/** + * cgroup_for_each_descendant_post - post-order walk of a cgroup's descendants + * @pos: the cgroup * to use as the loop cursor + * @cgroup: cgroup whose descendants to walk + * + * Similar to cgroup_for_each_descendant_pre() but performs post-order + * traversal instead. Note that the walk visibility guarantee described in + * pre-order walk doesn't apply the same to post-order walks. + */ +#define cgroup_for_each_descendant_post(pos, cgroup) \ + for (pos = cgroup_next_descendant_post(NULL, (cgroup)); (pos); \ + pos = cgroup_next_descendant_post((pos), (cgroup))) + /* A cgroup_iter should be treated as an opaque object */ struct cgroup_iter { struct list_head *cg_link; -- cgit v1.2.3 From d77807230e1ef30dbdee85aa24d27073a14dd168 Mon Sep 17 00:00:00 2001 From: David Howells Date: Wed, 7 Nov 2012 02:37:17 +0000 Subject: UAPI: (Scripted) Disintegrate include/linux/hdlc Signed-off-by: David Howells Acked-by: Arnd Bergmann Acked-by: Thomas Gleixner Acked-by: Michael Kerrisk Acked-by: Paul E. McKenney Acked-by: Dave Jones Acked-by: Krzysztof Halasa Signed-off-by: David S. Miller --- include/linux/hdlc/Kbuild | 1 - include/linux/hdlc/ioctl.h | 81 ---------------------------------------------- 2 files changed, 82 deletions(-) delete mode 100644 include/linux/hdlc/ioctl.h (limited to 'include/linux') diff --git a/include/linux/hdlc/Kbuild b/include/linux/hdlc/Kbuild index 1fb26448faa9..e69de29bb2d1 100644 --- a/include/linux/hdlc/Kbuild +++ b/include/linux/hdlc/Kbuild @@ -1 +0,0 @@ -header-y += ioctl.h diff --git a/include/linux/hdlc/ioctl.h b/include/linux/hdlc/ioctl.h deleted file mode 100644 index 583972364357..000000000000 --- a/include/linux/hdlc/ioctl.h +++ /dev/null @@ -1,81 +0,0 @@ -#ifndef __HDLC_IOCTL_H__ -#define __HDLC_IOCTL_H__ - - -#define GENERIC_HDLC_VERSION 4 /* For synchronization with sethdlc utility */ - -#define CLOCK_DEFAULT 0 /* Default setting */ -#define CLOCK_EXT 1 /* External TX and RX clock - DTE */ -#define CLOCK_INT 2 /* Internal TX and RX clock - DCE */ -#define CLOCK_TXINT 3 /* Internal TX and external RX clock */ -#define CLOCK_TXFROMRX 4 /* TX clock derived from external RX clock */ - - -#define ENCODING_DEFAULT 0 /* Default setting */ -#define ENCODING_NRZ 1 -#define ENCODING_NRZI 2 -#define ENCODING_FM_MARK 3 -#define ENCODING_FM_SPACE 4 -#define ENCODING_MANCHESTER 5 - - -#define PARITY_DEFAULT 0 /* Default setting */ -#define PARITY_NONE 1 /* No parity */ -#define PARITY_CRC16_PR0 2 /* CRC16, initial value 0x0000 */ -#define PARITY_CRC16_PR1 3 /* CRC16, initial value 0xFFFF */ -#define PARITY_CRC16_PR0_CCITT 4 /* CRC16, initial 0x0000, ITU-T version */ -#define PARITY_CRC16_PR1_CCITT 5 /* CRC16, initial 0xFFFF, ITU-T version */ -#define PARITY_CRC32_PR0_CCITT 6 /* CRC32, initial value 0x00000000 */ -#define PARITY_CRC32_PR1_CCITT 7 /* CRC32, initial value 0xFFFFFFFF */ - -#define LMI_DEFAULT 0 /* Default setting */ -#define LMI_NONE 1 /* No LMI, all PVCs are static */ -#define LMI_ANSI 2 /* ANSI Annex D */ -#define LMI_CCITT 3 /* ITU-T Annex A */ -#define LMI_CISCO 4 /* The "original" LMI, aka Gang of Four */ - -typedef struct { - unsigned int clock_rate; /* bits per second */ - unsigned int clock_type; /* internal, external, TX-internal etc. */ - unsigned short loopback; -} sync_serial_settings; /* V.35, V.24, X.21 */ - -typedef struct { - unsigned int clock_rate; /* bits per second */ - unsigned int clock_type; /* internal, external, TX-internal etc. */ - unsigned short loopback; - unsigned int slot_map; -} te1_settings; /* T1, E1 */ - -typedef struct { - unsigned short encoding; - unsigned short parity; -} raw_hdlc_proto; - -typedef struct { - unsigned int t391; - unsigned int t392; - unsigned int n391; - unsigned int n392; - unsigned int n393; - unsigned short lmi; - unsigned short dce; /* 1 for DCE (network side) operation */ -} fr_proto; - -typedef struct { - unsigned int dlci; -} fr_proto_pvc; /* for creating/deleting FR PVCs */ - -typedef struct { - unsigned int dlci; - char master[IFNAMSIZ]; /* Name of master FRAD device */ -}fr_proto_pvc_info; /* for returning PVC information only */ - -typedef struct { - unsigned int interval; - unsigned int timeout; -} cisco_proto; - -/* PPP doesn't need any info now - supply length = 0 to ioctl */ - -#endif /* __HDLC_IOCTL_H__ */ -- cgit v1.2.3 From 0bce04be442cf4d6e4ba9dac2f0a4c5ee88af5c5 Mon Sep 17 00:00:00 2001 From: Andreas Larsson Date: Tue, 6 Nov 2012 00:12:03 +0000 Subject: of/address: sparc: Declare of_address_to_resource() as an extern function for sparc again This bug-fix makes sure that of_address_to_resource is defined extern for sparc so that the sparc-specific implementation of of_address_to_resource() is once again used when including include/linux/of_address.h in a sparc context. A number of drivers in mainline relies on this function working for sparc. The bug was introduced in a850a7554442f08d3e910c6eeb4ee216868dda1e, "of/address: add empty static inlines for !CONFIG_OF". Contrary to that commit title, the static inlines are added for !CONFIG_OF_ADDRESS, and CONFIG_OF_ADDRESS is never defined for sparc. This is good behavior for the other functions in include/linux/of_address.h, as the extern functions defined in drivers/of/address.c only gets linked when OF_ADDRESS is configured. However, for of_address_to_resource there exists a sparc-specific implementation in arch/sparc/arch/sparc/kernel/of_device_common.c Solution suggested by: Sam Ravnborg Signed-off-by: Andreas Larsson Acked-by: Rob Herring Signed-off-by: David S. Miller --- include/linux/of_address.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of_address.h b/include/linux/of_address.h index a1984dd037da..e20e3af68fb6 100644 --- a/include/linux/of_address.h +++ b/include/linux/of_address.h @@ -28,11 +28,13 @@ static inline unsigned long pci_address_to_pio(phys_addr_t addr) { return -1; } #endif #else /* CONFIG_OF_ADDRESS */ +#ifndef of_address_to_resource static inline int of_address_to_resource(struct device_node *dev, int index, struct resource *r) { return -EINVAL; } +#endif static inline struct device_node *of_find_matching_node_by_address( struct device_node *from, const struct of_device_id *matches, -- cgit v1.2.3 From f8f626754ebeca613cf1af2e6f890cfde0e74d5b Mon Sep 17 00:00:00 2001 From: Jesse Gross Date: Fri, 9 Nov 2012 17:05:07 -0800 Subject: ipv6: Move ipv6_find_hdr() out of Netfilter code. Open vSwitch will soon also use ipv6_find_hdr() so this moves it out of Netfilter-specific code into a more common location. Signed-off-by: Jesse Gross --- include/linux/netfilter_ipv6/ip6_tables.h | 9 --------- 1 file changed, 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netfilter_ipv6/ip6_tables.h b/include/linux/netfilter_ipv6/ip6_tables.h index 5f84c6229dc6..610208b18c05 100644 --- a/include/linux/netfilter_ipv6/ip6_tables.h +++ b/include/linux/netfilter_ipv6/ip6_tables.h @@ -47,15 +47,6 @@ ip6t_ext_hdr(u8 nexthdr) (nexthdr == IPPROTO_DSTOPTS); } -enum { - IP6T_FH_F_FRAG = (1 << 0), - IP6T_FH_F_AUTH = (1 << 1), -}; - -/* find specified header and get offset to it */ -extern int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset, - int target, unsigned short *fragoff, int *fragflg); - #ifdef CONFIG_COMPAT #include -- cgit v1.2.3 From 1789382a72a537447d65ea4131d8bcc1ad85ce7b Mon Sep 17 00:00:00 2001 From: Donald Dutile Date: Mon, 5 Nov 2012 15:20:36 -0500 Subject: PCI: SRIOV control and status via sysfs Provide files under sysfs to determine the maximum number of VFs an SR-IOV-capable PCIe device supports, and methods to enable and disable the VFs on a per-device basis. Currently, VF enablement by SR-IOV-capable PCIe devices is done via driver-specific module parameters. If not setup in modprobe files, it requires admin to unload & reload PF drivers with number of desired VFs to enable. Additionally, the enablement is system wide: all devices controlled by the same driver have the same number of VFs enabled. Although the latter is probably desired, there are PCI configurations setup by system BIOS that may not enable that to occur. Two files are created for the PF of PCIe devices with SR-IOV support: sriov_totalvfs Contains the maximum number of VFs the device could support as reported by the TotalVFs register in the SR-IOV extended capability. sriov_numvfs Contains the number of VFs currently enabled on this device as reported by the NumVFs register in the SR-IOV extended capability. Writing zero to this file disables all VFs. Writing a positive number to this file enables that number of VFs. These files are readable for all SR-IOV PF devices. Writes to the sriov_numvfs file are effective only if a driver that supports the sriov_configure() method is attached. Signed-off-by: Donald Dutile Signed-off-by: Bjorn Helgaas --- include/linux/pci.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index ee2179546c63..7ef8fba319da 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -573,6 +573,7 @@ struct pci_driver { int (*resume_early) (struct pci_dev *dev); int (*resume) (struct pci_dev *dev); /* Device woken up */ void (*shutdown) (struct pci_dev *dev); + int (*sriov_configure) (struct pci_dev *dev, int num_vfs); /* PF pdev */ const struct pci_error_handlers *err_handler; struct device_driver driver; struct pci_dynids dynids; -- cgit v1.2.3 From bff73156d3ad661655e6d9ef04c2284cf3abb0f1 Mon Sep 17 00:00:00 2001 From: Donald Dutile Date: Mon, 5 Nov 2012 15:20:37 -0500 Subject: PCI: Provide method to reduce the number of total VFs supported Some implementations of SRIOV provide a capability structure value of TotalVFs that is greater than what the software can support. Provide a method to reduce the capability structure reported value to the value the driver can support. This ensures sysfs reports the current capability of the system, hardware and software. Example for its use: igb & ixgbe -- report 8 & 64 as TotalVFs, but drivers only support 7 & 63 maximum. Signed-off-by: Donald Dutile Signed-off-by: Bjorn Helgaas --- include/linux/pci.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 7ef8fba319da..1ad824966e64 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1611,6 +1611,8 @@ extern int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn); extern void pci_disable_sriov(struct pci_dev *dev); extern irqreturn_t pci_sriov_migration(struct pci_dev *dev); extern int pci_num_vf(struct pci_dev *dev); +extern int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs); +extern int pci_sriov_get_totalvfs(struct pci_dev *dev); #else static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn) { @@ -1627,6 +1629,14 @@ static inline int pci_num_vf(struct pci_dev *dev) { return 0; } +static inline int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs) +{ + return 0; +} +static inline int pci_sriov_get_totalvfs(struct pci_dev *dev) +{ + return 0; +} #endif #if defined(CONFIG_HOTPLUG_PCI) || defined(CONFIG_HOTPLUG_PCI_MODULE) -- cgit v1.2.3 From 84b36ce5f79c01f792c623f14e92ed86cdccb42f Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sat, 30 Jun 2012 20:06:00 +0100 Subject: staging:iio: Add support for multiple buffers Route all buffer writes through the demux. Addition or removal of a buffer results in tear down and setup of all the buffers for a given device. Signed-off-by: Jonathan Cameron Tested-by: srinivas pandruvada --- include/linux/iio/buffer.h | 24 +++++++++++++++++++----- include/linux/iio/iio.h | 2 ++ 2 files changed, 21 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h index c629b3a1d9a9..027040569180 100644 --- a/include/linux/iio/buffer.h +++ b/include/linux/iio/buffer.h @@ -66,7 +66,8 @@ struct iio_buffer_access_funcs { * @stufftoread: [INTERN] flag to indicate new data. * @demux_list: [INTERN] list of operations required to demux the scan. * @demux_bounce: [INTERN] buffer for doing gather from incoming scan. - **/ + * @buffer_list: [INTERN] entry in the devices list of current buffers. + */ struct iio_buffer { int length; int bytes_per_datum; @@ -81,8 +82,21 @@ struct iio_buffer { const struct attribute_group *attrs; struct list_head demux_list; unsigned char *demux_bounce; + struct list_head buffer_list; }; +/** + * iio_update_buffers() - add or remove buffer from active list + * @indio_dev: device to add buffer to + * @insert_buffer: buffer to insert + * @remove_buffer: buffer_to_remove + * + * Note this will tear down the all buffering and build it up again + */ +int iio_update_buffers(struct iio_dev *indio_dev, + struct iio_buffer *insert_buffer, + struct iio_buffer *remove_buffer); + /** * iio_buffer_init() - Initialize the buffer structure * @buffer: buffer to be initialized @@ -115,11 +129,11 @@ int iio_scan_mask_set(struct iio_dev *indio_dev, struct iio_buffer *buffer, int bit); /** - * iio_push_to_buffer() - push to a registered buffer. - * @buffer: IIO buffer structure for device - * @data: the data to push to the buffer + * iio_push_to_buffers() - push to a registered buffer. + * @indio_dev: iio_dev structure for device. + * @data: Full scan. */ -int iio_push_to_buffer(struct iio_buffer *buffer, unsigned char *data); +int iio_push_to_buffers(struct iio_dev *indio_dev, unsigned char *data); int iio_update_demux(struct iio_dev *indio_dev); diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index 7806c24e5bc8..adca93a999a7 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -410,6 +410,7 @@ struct iio_buffer_setup_ops { * and owner * @event_interface: [INTERN] event chrdevs associated with interrupt lines * @buffer: [DRIVER] any buffer present + * @buffer_list: [INTERN] list of all buffers currently attached * @scan_bytes: [INTERN] num bytes captured to be fed to buffer demux * @mlock: [INTERN] lock used to prevent simultaneous device state * changes @@ -448,6 +449,7 @@ struct iio_dev { struct iio_event_interface *event_interface; struct iio_buffer *buffer; + struct list_head buffer_list; int scan_bytes; struct mutex mlock; -- cgit v1.2.3 From 0464415dd21785aa8e8b12dbc939fcb5ca52f464 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sat, 30 Jun 2012 20:06:00 +0100 Subject: staging:iio:in kernel users: Add a data field for channel specific info. Used to allow information about a given channel mapping to be passed through from board files to the consumer drivers. Signed-off-by: Jonathan Cameron --- include/linux/iio/consumer.h | 2 ++ include/linux/iio/machine.h | 2 ++ 2 files changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h index e875bcf0478f..57efee63a6da 100644 --- a/include/linux/iio/consumer.h +++ b/include/linux/iio/consumer.h @@ -18,10 +18,12 @@ struct iio_chan_spec; * struct iio_channel - everything needed for a consumer to use a channel * @indio_dev: Device on which the channel exists. * @channel: Full description of the channel. + * @data: Data about the channel used by consumer. */ struct iio_channel { struct iio_dev *indio_dev; const struct iio_chan_spec *channel; + void *data; }; /** diff --git a/include/linux/iio/machine.h b/include/linux/iio/machine.h index 809a3f08d5a5..1601a2a63a72 100644 --- a/include/linux/iio/machine.h +++ b/include/linux/iio/machine.h @@ -19,11 +19,13 @@ * @consumer_dev_name: Name to uniquely identify the consumer device. * @consumer_channel: Unique name used to identify the channel on the * consumer side. + * @consumer_data: Data about the channel for use by the consumer driver. */ struct iio_map { const char *adc_channel_label; const char *consumer_dev_name; const char *consumer_channel; + void *consumer_data; }; #endif -- cgit v1.2.3 From 92d1079b281f89f1c65c6aece3cfab4fb422c797 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sat, 30 Jun 2012 20:06:00 +0100 Subject: staging:iio: add a callback buffer for in kernel push interface This callback buffer is meant to be opaque to users, but basically adds a very simple pass through buffer to which data may be pushed when it is inserted into the buffer list. Signed-off-by: Jonathan Cameron --- include/linux/iio/consumer.h | 46 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) (limited to 'include/linux') diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h index 57efee63a6da..126c0a9375f2 100644 --- a/include/linux/iio/consumer.h +++ b/include/linux/iio/consumer.h @@ -61,6 +61,52 @@ struct iio_channel *iio_channel_get_all(const char *name); */ void iio_channel_release_all(struct iio_channel *chan); +struct iio_cb_buffer; +/** + * iio_channel_get_all_cb() - register callback for triggered capture + * @name: Name of client device. + * @cb: Callback function. + * @private: Private data passed to callback. + * + * NB right now we have no ability to mux data from multiple devices. + * So if the channels requested come from different devices this will + * fail. + */ +struct iio_cb_buffer *iio_channel_get_all_cb(const char *name, + int (*cb)(u8 *data, + void *private), + void *private); +/** + * iio_channel_release_all_cb() - release and unregister the callback. + * @cb_buffer: The callback buffer that was allocated. + */ +void iio_channel_release_all_cb(struct iio_cb_buffer *cb_buffer); + +/** + * iio_channel_start_all_cb() - start the flow of data through callback. + * @cb_buff: The callback buffer we are starting. + */ +int iio_channel_start_all_cb(struct iio_cb_buffer *cb_buff); + +/** + * iio_channel_stop_all_cb() - stop the flow of data through the callback. + * @cb_buff: The callback buffer we are stopping. + */ +void iio_channel_stop_all_cb(struct iio_cb_buffer *cb_buff); + +/** + * iio_channel_cb_get_channels() - get access to the underlying channels. + * @cb_buff: The callback buffer from whom we want the channel + * information. + * + * This function allows one to obtain information about the channels. + * Whilst this may allow direct reading if all buffers are disabled, the + * primary aim is to allow drivers that are consuming a channel to query + * things like scaling of the channel. + */ +struct iio_channel +*iio_channel_cb_get_channels(const struct iio_cb_buffer *cb_buffer); + /** * iio_read_channel_raw() - read from a given channel * @chan: The channel being queried. -- cgit v1.2.3 From 7e10ee68f8ccc62e0934ff02f39ce541f3879844 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Sat, 27 Oct 2012 15:21:35 +0530 Subject: Revert "pinctrl: remove pinctrl_remove_gpio_range" This reverts earlier commit which removed pinctrl_remove_gpio_range(), because at that time there weren't any more users of that routine. It was removed as the removal of ranges was done in unregister of pinctrl. But as we are now registering stuff from gpiolib, we may remove and insert a gpio module multiple times. So, we need this routine again. Signed-off-by: Viresh Kumar Signed-off-by: Linus Walleij --- include/linux/pinctrl/pinctrl.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h index 7d087f03e91e..eda04674633d 100644 --- a/include/linux/pinctrl/pinctrl.h +++ b/include/linux/pinctrl/pinctrl.h @@ -134,6 +134,8 @@ extern void pinctrl_add_gpio_range(struct pinctrl_dev *pctldev, extern void pinctrl_add_gpio_ranges(struct pinctrl_dev *pctldev, struct pinctrl_gpio_range *ranges, unsigned nranges); +extern void pinctrl_remove_gpio_range(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range); extern const char *pinctrl_dev_get_name(struct pinctrl_dev *pctldev); extern void *pinctrl_dev_get_drvdata(struct pinctrl_dev *pctldev); #else -- cgit v1.2.3 From f23f1516b6757c326cc638bed8c402c77e2a596e Mon Sep 17 00:00:00 2001 From: Shiraz Hashim Date: Sat, 27 Oct 2012 15:21:36 +0530 Subject: gpiolib: provide provision to register pin ranges pinctrl subsystem needs gpio chip base to prepare set of gpio pin ranges, which a given pinctrl driver can handle. This is important to handle pinctrl gpio request calls in order to program a given pin properly for gpio operation. As gpio base is allocated dynamically during gpiochip registration, presently there exists no clean way to pass this information to the pinctrl subsystem. After few discussions from [1], it was concluded that may be gpio controller reporting the pin range it supports, is a better way than pinctrl subsystem directly registering it. [1] http://comments.gmane.org/gmane.linux.ports.arm.kernel/184816 Cc: Grant Likely Signed-off-by: Viresh Kumar Signed-off-by: Shiraz Hashim [Edited documentation a bit] Signed-off-by: Linus Walleij --- include/linux/gpio.h | 3 +++ include/linux/pinctrl/pinctrl.h | 17 +++++++++++++++++ 2 files changed, 20 insertions(+) (limited to 'include/linux') diff --git a/include/linux/gpio.h b/include/linux/gpio.h index 2e31e8b3a190..a28445992b7f 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -231,6 +231,9 @@ static inline int irq_to_gpio(unsigned irq) return -EINVAL; } +void gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name, + unsigned int pin_base, unsigned int npins); +void gpiochip_remove_pin_ranges(struct gpio_chip *chip); #endif #endif /* __LINUX_GPIO_H */ diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h index eda04674633d..434e5a94e131 100644 --- a/include/linux/pinctrl/pinctrl.h +++ b/include/linux/pinctrl/pinctrl.h @@ -136,6 +136,23 @@ extern void pinctrl_add_gpio_ranges(struct pinctrl_dev *pctldev, unsigned nranges); extern void pinctrl_remove_gpio_range(struct pinctrl_dev *pctldev, struct pinctrl_gpio_range *range); + +extern struct pinctrl_dev *find_pinctrl_and_add_gpio_range(const char *devname, + struct pinctrl_gpio_range *range); + +#ifdef CONFIG_OF +extern struct pinctrl_dev *of_pinctrl_add_gpio_range(struct device_node *np, + struct pinctrl_gpio_range *range); +#else +static inline +struct pinctrl_dev *of_pinctrl_add_gpio_range(struct device_node *np, + struct pinctrl_gpio_range *range) +{ + return NULL; +} + +#endif /* CONFIG_OF */ + extern const char *pinctrl_dev_get_name(struct pinctrl_dev *pctldev); extern void *pinctrl_dev_get_drvdata(struct pinctrl_dev *pctldev); #else -- cgit v1.2.3 From a6c45b99a658521291cfb66ecf035cc58b38f206 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 17 Oct 2012 18:31:20 +0200 Subject: pinctrl/coh901: use irqdomain, allocate irqdescs This switches the COH 901 pinctrl driver to allocate its GPIO IRQs dynamically, and start to use a linear irqdomain to map from the hardware IRQs. This way we can cut away the complex allocation of IRQ numbers from the file. Signed-off-by: Linus Walleij --- include/linux/platform_data/pinctrl-coh901.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/pinctrl-coh901.h b/include/linux/platform_data/pinctrl-coh901.h index 30dea251b835..27a23b318cef 100644 --- a/include/linux/platform_data/pinctrl-coh901.h +++ b/include/linux/platform_data/pinctrl-coh901.h @@ -13,13 +13,11 @@ * struct u300_gpio_platform - U300 GPIO platform data * @ports: number of GPIO block ports * @gpio_base: first GPIO number for this block (use a free range) - * @gpio_irq_base: first GPIO IRQ number for this block (use a free range) * @pinctrl_device: pin control device to spawn as child */ struct u300_gpio_platform { u8 ports; int gpio_base; - int gpio_irq_base; struct platform_device *pinctrl_device; }; -- cgit v1.2.3 From 165adc9c1734a3f3bdbc6dc7c7a29bbefb424006 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 6 Nov 2012 14:49:39 +0100 Subject: gpiolib: fix up function prototypes etc Commit 69e1601bca88809dc118abd1becb02c15a02ec71 "gpiolib: provide provision to register pin ranges" Got most of it's function prototypes wrong, so fix this up by: - Moving the void declarations into static inlines in (previously the actual prototypes were declared here...) - Declare the gpiochip_add_pin_range() and gpiochip_remove_pin_ranges() functions in together with the pin range struct declaration itself. - Actually only implement these very functions in gpiolib.c if CONFIG_PINCTRL is set. - Additionally export the symbols since modules will need to be able to do this. Reviewed-by: Stephen Warren Signed-off-by: Linus Walleij --- include/linux/gpio.h | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/gpio.h b/include/linux/gpio.h index a28445992b7f..21d28b930dc7 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -72,9 +72,9 @@ static inline int irq_to_gpio(unsigned int irq) return -EINVAL; } -#endif +#endif /* ! CONFIG_ARCH_HAVE_CUSTOM_GPIO_H */ -#else +#else /* ! CONFIG_GENERIC_GPIO */ #include #include @@ -231,9 +231,21 @@ static inline int irq_to_gpio(unsigned irq) return -EINVAL; } -void gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name, - unsigned int pin_base, unsigned int npins); -void gpiochip_remove_pin_ranges(struct gpio_chip *chip); -#endif +#ifdef CONFIG_PINCTRL + +static inline void +gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name, + unsigned int pin_base, unsigned int npins) +{ +} + +static inline void +gpiochip_remove_pin_ranges(struct gpio_chip *chip) +{ +} + +#endif /* CONFIG_PINCTRL */ + +#endif /* ! CONFIG_GENERIC_GPIO */ #endif /* __LINUX_GPIO_H */ -- cgit v1.2.3 From 1e63d7b9363f0c57d00991f9f2e0af374dfc591a Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 6 Nov 2012 16:03:35 +0100 Subject: gpiolib: separation of pin concerns The fact that of_gpiochip_add_pin_range() and gpiochip_add_pin_range() share too much code is fragile and will invariably mean that bugs need to be fixed in two places instead of one. So separate the concerns of gpiolib.c and gpiolib-of.c and have the latter call the former as back-end. This is necessary also when going forward with other device descriptions such as ACPI. This is done by: - Adding a return code to gpiochip_add_pin_range() so we can reliably check whether this succeeds. - Get rid of the custom of_pinctrl_add_gpio_range() from pinctrl. Instead create of_pinctrl_get() to just retrive the pin controller per se from an OF node. This composite function was just begging to be deleted, it was way to purpose-specific. - Use pinctrl_dev_get_name() to get the name of the retrieved pin controller and use that to call back into the generic gpiochip_add_pin_range(). Now the pin range is only allocated and tied to a pin controller from the core implementation in gpiolib.c. Signed-off-by: Linus Walleij --- include/linux/gpio.h | 2 +- include/linux/pinctrl/pinctrl.h | 7 ++----- 2 files changed, 3 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/gpio.h b/include/linux/gpio.h index 21d28b930dc7..81bbfe5b5de6 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -233,7 +233,7 @@ static inline int irq_to_gpio(unsigned irq) #ifdef CONFIG_PINCTRL -static inline void +static inline int gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name, unsigned int pin_base, unsigned int npins) { diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h index 434e5a94e131..4a58428bc793 100644 --- a/include/linux/pinctrl/pinctrl.h +++ b/include/linux/pinctrl/pinctrl.h @@ -141,16 +141,13 @@ extern struct pinctrl_dev *find_pinctrl_and_add_gpio_range(const char *devname, struct pinctrl_gpio_range *range); #ifdef CONFIG_OF -extern struct pinctrl_dev *of_pinctrl_add_gpio_range(struct device_node *np, - struct pinctrl_gpio_range *range); +extern struct pinctrl_dev *of_pinctrl_get(struct device_node *np); #else static inline -struct pinctrl_dev *of_pinctrl_add_gpio_range(struct device_node *np, - struct pinctrl_gpio_range *range) +struct pinctrl_dev *of_pinctrl_get(struct device_node *np) { return NULL; } - #endif /* CONFIG_OF */ extern const char *pinctrl_dev_get_name(struct pinctrl_dev *pctldev); -- cgit v1.2.3 From 50309a9c2e576ac4ad29e30f5854acb87bdc2ac4 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 6 Nov 2012 17:16:39 +0100 Subject: gpiolib: iron out include ladder mistakes The <*/gpio.h> includes are updated again: now we need to account for the problem introduced by commit: 595679a8038584df7b9398bf34f61db3c038bfea "gpiolib: fix up function prototypes etc" Actually we need static inlines in include/asm-generic/gpio.h as well since we may have GPIOLIB but not PINCTRL. Make sure to move all the CONFIG_PINCTRL business to the end of the file so we are sure we have declared struct gpio_chip. And we need to keep the static inlines in but here for the !CONFIG_GENERIC_GPIO case, and then we may as well throw in a few warnings like the other prototypes there, if someone would have the bad taste of compiling without GENERIC_GPIO even. Signed-off-by: Linus Walleij --- include/linux/gpio.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/gpio.h b/include/linux/gpio.h index 81bbfe5b5de6..7ba2762abbc9 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -231,21 +231,20 @@ static inline int irq_to_gpio(unsigned irq) return -EINVAL; } -#ifdef CONFIG_PINCTRL - static inline int gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name, unsigned int pin_base, unsigned int npins) { + WARN_ON(1); + return -EINVAL; } static inline void gpiochip_remove_pin_ranges(struct gpio_chip *chip) { + WARN_ON(1); } -#endif /* CONFIG_PINCTRL */ - #endif /* ! CONFIG_GENERIC_GPIO */ #endif /* __LINUX_GPIO_H */ -- cgit v1.2.3 From 76f93992e4c44f30be797d5c99d6f369ed001747 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Mon, 5 Nov 2012 16:10:31 +0100 Subject: mfd: Provide the STMPE driver with its own IRQ domain The STMPE driver is yet another IRQ controller which requires its own IRQ domain. So, we provide it with one. Acked-by: Arnd Bergmann Acked-by: Linus Walleij Signed-off-by: Lee Jones Signed-off-by: Samuel Ortiz --- include/linux/mfd/stmpe.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/stmpe.h b/include/linux/mfd/stmpe.h index f8d5b4d5843f..15dac790365f 100644 --- a/include/linux/mfd/stmpe.h +++ b/include/linux/mfd/stmpe.h @@ -62,6 +62,7 @@ struct stmpe_client_info; * @lock: lock protecting I/O operations * @irq_lock: IRQ bus lock * @dev: device, mostly for dev_dbg() + * @irq_domain: IRQ domain * @client: client - i2c or spi * @ci: client specific information * @partnum: part number @@ -79,6 +80,7 @@ struct stmpe { struct mutex lock; struct mutex irq_lock; struct device *dev; + struct irq_domain *domain; void *client; struct stmpe_client_info *ci; enum stmpe_partnum partnum; -- cgit v1.2.3 From 90a38d999739f35f4fc925c875e6ee518546b66c Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Mon, 15 Oct 2012 22:44:45 +0200 Subject: mfd: Remove Unicode Byte Order Marks from da9055 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Older gcc (< 4.4) doesn't like files starting with Unicode BOMs: include/linux/mfd/da9055/core.h:1: error: stray ‘\357’ in program include/linux/mfd/da9055/core.h:1: error: stray ‘\273’ in program include/linux/mfd/da9055/core.h:1: error: stray ‘\277’ in program include/linux/mfd/da9055/pdata.h:1: error: stray ‘\357’ in program include/linux/mfd/da9055/pdata.h:1: error: stray ‘\273’ in program include/linux/mfd/da9055/pdata.h:1: error: stray ‘\277’ in program include/linux/mfd/da9055/reg.h:1: error: stray ‘\357’ in program include/linux/mfd/da9055/reg.h:1: error: stray ‘\273’ in program include/linux/mfd/da9055/reg.h:1: error: stray ‘\277’ in program Remove the BOMs, the rest of the files is plain ASCII anyway. Output of "file" before: include/linux/mfd/da9055/core.h: UTF-8 Unicode (with BOM) C program text include/linux/mfd/da9055/pdata.h: UTF-8 Unicode (with BOM) C program text include/linux/mfd/da9055/reg.h: UTF-8 Unicode (with BOM) C program text Output of "file" after: include/linux/mfd/da9055/core.h: ASCII C program text include/linux/mfd/da9055/pdata.h: ASCII C program text include/linux/mfd/da9055/reg.h: ASCII C program text Signed-off-by: Geert Uytterhoeven Signed-off-by: Samuel Ortiz --- include/linux/mfd/da9055/core.h | 2 +- include/linux/mfd/da9055/pdata.h | 2 +- include/linux/mfd/da9055/reg.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/da9055/core.h b/include/linux/mfd/da9055/core.h index c96ad682c59e..956afa445998 100644 --- a/include/linux/mfd/da9055/core.h +++ b/include/linux/mfd/da9055/core.h @@ -1,4 +1,4 @@ -/* +/* * da9055 declarations for DA9055 PMICs. * * Copyright(c) 2012 Dialog Semiconductor Ltd. diff --git a/include/linux/mfd/da9055/pdata.h b/include/linux/mfd/da9055/pdata.h index 147293b4471d..b9b204edb4e9 100644 --- a/include/linux/mfd/da9055/pdata.h +++ b/include/linux/mfd/da9055/pdata.h @@ -1,4 +1,4 @@ -/* Copyright (C) 2012 Dialog Semiconductor Ltd. +/* Copyright (C) 2012 Dialog Semiconductor Ltd. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by diff --git a/include/linux/mfd/da9055/reg.h b/include/linux/mfd/da9055/reg.h index df237ee54803..2b592e072dbf 100644 --- a/include/linux/mfd/da9055/reg.h +++ b/include/linux/mfd/da9055/reg.h @@ -1,4 +1,4 @@ -/* +/* * DA9055 declarations for DA9055 PMICs. * * Copyright(c) 2012 Dialog Semiconductor Ltd. -- cgit v1.2.3 From 89d16665d388837b30972081d97b814be26d68a2 Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Fri, 9 Nov 2012 21:02:56 +0000 Subject: efivarfs: Use query_variable_info() to limit kmalloc() We don't want someone who can write EFI variables to be able to allocate arbitrarily large amounts of memory, so cap it to something sensible like the amount of free space for EFI variables. Acked-by: Jeremy Kerr Cc: Matthew Garrett Cc: Alan Cox Signed-off-by: Matt Fleming --- include/linux/efi.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/efi.h b/include/linux/efi.h index 5e2308d9c6be..f80079cd84f4 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -646,6 +646,7 @@ struct efivar_operations { efi_get_variable_t *get_variable; efi_get_next_variable_t *get_next_variable; efi_set_variable_t *set_variable; + efi_query_variable_info_t *query_variable_info; }; struct efivars { -- cgit v1.2.3 From 9f488ba8633fe77910ea0ba80ec762d9c34af1b6 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 13 Nov 2012 10:46:33 -0800 Subject: IIO: fix build error in lp8788-charger.c Turns out that consumer.h needs to include types.h on some platforms to build properly (like powerpc). Reported-by: Stephen Rothwell Cc: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- include/linux/iio/consumer.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h index 126c0a9375f2..16c35ac045bd 100644 --- a/include/linux/iio/consumer.h +++ b/include/linux/iio/consumer.h @@ -9,6 +9,8 @@ */ #ifndef _IIO_INKERN_CONSUMER_H_ #define _IIO_INKERN_CONSUMER_H_ + +#include #include struct iio_dev; -- cgit v1.2.3 From ab7edb149c7548541ee588b8372c2041b6f1cbc8 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Thu, 11 Oct 2012 13:55:32 +0200 Subject: mfd: twl6040: Convert to use regmap_irq With regmap_irq it is possible to remove the twl6040-irq.c file and simplify the code. Signed-off-by: Peter Ujfalusi Reviewed-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/twl6040.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h index a8eff4ad9be5..94ac944d12f0 100644 --- a/include/linux/mfd/twl6040.h +++ b/include/linux/mfd/twl6040.h @@ -207,10 +207,12 @@ struct twl6040_platform_data { }; struct regmap; +struct regmap_irq_chips_data; struct twl6040 { struct device *dev; struct regmap *regmap; + struct regmap_irq_chip_data *irq_data; struct regulator_bulk_data supplies[2]; /* supplies for vio, v2v1 */ struct mutex mutex; struct mutex irq_mutex; @@ -228,9 +230,8 @@ struct twl6040 { unsigned int mclk; unsigned int irq; - unsigned int irq_base; - u8 irq_masks_cur; - u8 irq_masks_cache; + unsigned int irq_ready; + unsigned int irq_th; }; int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg); @@ -245,8 +246,7 @@ int twl6040_set_pll(struct twl6040 *twl6040, int pll_id, unsigned int freq_in, unsigned int freq_out); int twl6040_get_pll(struct twl6040 *twl6040); unsigned int twl6040_get_sysclk(struct twl6040 *twl6040); -int twl6040_irq_init(struct twl6040 *twl6040); -void twl6040_irq_exit(struct twl6040 *twl6040); + /* Get the combined status of the vibra control register */ int twl6040_get_vibralr_status(struct twl6040 *twl6040); -- cgit v1.2.3 From 605511a848ae3ac4b2ce272ae6cbf8930b29ebb3 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Tue, 13 Nov 2012 19:18:05 +0530 Subject: mfd: Convert tps6586x to irq_domain Allocate the irq base if it base is not porvided i.e. in case of device tree invocation of this driver. Convert the tps6586x driver to irq domain, using a legacy IRQ mapping if an irq_base is specified in platform data or dynamically allocated and otherwise using a linear mapping. Signed-off-by: Laxman Dewangan Reviewed-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/tps6586x.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mfd/tps6586x.h b/include/linux/mfd/tps6586x.h index 2dd123194958..ebd8b08a386b 100644 --- a/include/linux/mfd/tps6586x.h +++ b/include/linux/mfd/tps6586x.h @@ -93,5 +93,6 @@ extern int tps6586x_set_bits(struct device *dev, int reg, uint8_t bit_mask); extern int tps6586x_clr_bits(struct device *dev, int reg, uint8_t bit_mask); extern int tps6586x_update(struct device *dev, int reg, uint8_t val, uint8_t mask); +extern int tps6586x_irq_get_virq(struct device *dev, int irq); #endif /*__LINUX_MFD_TPS6586X_H */ -- cgit v1.2.3 From d6ad418763888f617ac5b4849823e4cd670df1dd Mon Sep 17 00:00:00 2001 From: John Stultz Date: Tue, 28 Feb 2012 16:50:11 -0800 Subject: time: Kill xtime_lock, replacing it with jiffies_lock Now that timekeeping is protected by its own locks, rename the xtime_lock to jifffies_lock to better describe what it protects. CC: Thomas Gleixner CC: Eric Dumazet CC: Richard Cochran Signed-off-by: John Stultz --- include/linux/jiffies.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h index 6b87413da9d6..82ed068b1ebe 100644 --- a/include/linux/jiffies.h +++ b/include/linux/jiffies.h @@ -70,11 +70,12 @@ extern int register_refined_jiffies(long clock_tick_rate); /* * The 64-bit value is not atomic - you MUST NOT read it - * without sampling the sequence number in xtime_lock. + * without sampling the sequence number in jiffies_lock. * get_jiffies_64() will do this for you as appropriate. */ extern u64 __jiffy_data jiffies_64; extern unsigned long volatile __jiffy_data jiffies; +extern seqlock_t jiffies_lock; #if (BITS_PER_LONG < 64) u64 get_jiffies_64(void); -- cgit v1.2.3 From 5cb04436eef62aa8f5c482f8ec8deba391dea465 Mon Sep 17 00:00:00 2001 From: Hannes Frederic Sowa Date: Tue, 6 Nov 2012 16:46:20 +0000 Subject: ipv6: add knob to send unsolicited ND on link-layer address change This patch introduces a new knob ndisc_notify. If enabled, the kernel will transmit an unsolicited neighbour advertisement on link-layer address change to update the neighbour tables of the corresponding hosts more quickly. This is the equivalent to arp_notify in ipv4 world. Signed-off-by: Hannes Frederic Sowa Signed-off-by: David S. Miller --- include/linux/ipv6.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h index bcba48a97868..5e11905a4f01 100644 --- a/include/linux/ipv6.h +++ b/include/linux/ipv6.h @@ -47,6 +47,7 @@ struct ipv6_devconf { __s32 disable_ipv6; __s32 accept_dad; __s32 force_tllao; + __s32 ndisc_notify; void *sysctl; }; -- cgit v1.2.3 From 8cbd9cc6254065c97c4bac42daa55ba1abe73a8e Mon Sep 17 00:00:00 2001 From: David Sharp Date: Tue, 13 Nov 2012 12:18:21 -0800 Subject: tracing,x86: Add a TSC trace_clock In order to promote interoperability between userspace tracers and ftrace, add a trace_clock that reports raw TSC values which will then be recorded in the ring buffer. Userspace tracers that also record TSCs are then on exactly the same time base as the kernel and events can be unambiguously interlaced. Tested: Enabled a tracepoint and the "tsc" trace_clock and saw very large timestamp values. v2: Move arch-specific bits out of generic code. v3: Rename "x86-tsc", cleanups v7: Generic arch bits in Kbuild. Google-Bug-Id: 6980623 Link: http://lkml.kernel.org/r/1352837903-32191-1-git-send-email-dhsharp@google.com Acked-by: Ingo Molnar Cc: Masami Hiramatsu Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Signed-off-by: David Sharp Signed-off-by: Steven Rostedt --- include/linux/trace_clock.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/trace_clock.h b/include/linux/trace_clock.h index 4eb490237d4c..d563f37e1a1d 100644 --- a/include/linux/trace_clock.h +++ b/include/linux/trace_clock.h @@ -12,6 +12,8 @@ #include #include +#include + extern u64 notrace trace_clock_local(void); extern u64 notrace trace_clock(void); extern u64 notrace trace_clock_global(void); -- cgit v1.2.3 From 8be0709f10e3dd5d7d07933ad61a9f18c4b93ca5 Mon Sep 17 00:00:00 2001 From: David Sharp Date: Tue, 13 Nov 2012 12:18:22 -0800 Subject: tracing: Format non-nanosec times from tsc clock without a decimal point. With the addition of the "tsc" clock, formatting timestamps to look like fractional seconds is misleading. Mark clocks as either in nanoseconds or not, and format non-nanosecond timestamps as decimal integers. Tested: $ cd /sys/kernel/debug/tracing/ $ cat trace_clock [local] global tsc $ echo sched_switch > set_event $ echo 1 > tracing_on ; sleep 0.0005 ; echo 0 > tracing_on $ cat trace -0 [000] 6330.555552: sched_switch: prev_comm=swapper prev_pid=0 prev_prio=120 prev_state=R ==> next_comm=bash next_pid=29964 next_prio=120 sleep-29964 [000] 6330.555628: sched_switch: prev_comm=bash prev_pid=29964 prev_prio=120 prev_state=S ==> next_comm=swapper next_pid=0 next_prio=120 ... $ echo 1 > options/latency-format $ cat trace -0 0 4104553247us+: sched_switch: prev_comm=swapper prev_pid=0 prev_prio=120 prev_state=R ==> next_comm=bash next_pid=29964 next_prio=120 sleep-29964 0 4104553322us+: sched_switch: prev_comm=bash prev_pid=29964 prev_prio=120 prev_state=S ==> next_comm=swapper next_pid=0 next_prio=120 ... $ echo tsc > trace_clock $ cat trace $ echo 1 > tracing_on ; sleep 0.0005 ; echo 0 > tracing_on $ echo 0 > options/latency-format $ cat trace -0 [000] 16490053398357: sched_switch: prev_comm=swapper prev_pid=0 prev_prio=120 prev_state=R ==> next_comm=bash next_pid=31128 next_prio=120 sleep-31128 [000] 16490053588518: sched_switch: prev_comm=bash prev_pid=31128 prev_prio=120 prev_state=S ==> next_comm=swapper next_pid=0 next_prio=120 ... echo 1 > options/latency-format $ cat trace -0 0 91557653238+: sched_switch: prev_comm=swapper prev_pid=0 prev_prio=120 prev_state=R ==> next_comm=bash next_pid=31128 next_prio=120 sleep-31128 0 91557843399+: sched_switch: prev_comm=bash prev_pid=31128 prev_prio=120 prev_state=S ==> next_comm=swapper next_pid=0 next_prio=120 ... v2: Move arch-specific bits out of generic code. v4: Fix x86_32 build due to 64-bit division. Google-Bug-Id: 6980623 Link: http://lkml.kernel.org/r/1352837903-32191-2-git-send-email-dhsharp@google.com Cc: Masami Hiramatsu Signed-off-by: David Sharp Signed-off-by: Steven Rostedt --- include/linux/ftrace_event.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index b80c8ddfbbdc..a3d489531d83 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h @@ -86,6 +86,12 @@ struct trace_iterator { cpumask_var_t started; }; +enum trace_iter_flags { + TRACE_FILE_LAT_FMT = 1, + TRACE_FILE_ANNOTATE = 2, + TRACE_FILE_TIME_IN_NS = 4, +}; + struct trace_event; -- cgit v1.2.3 From bb08f76d8419a163b7a4212a0e4ea6bd25acacd1 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Sat, 20 Oct 2012 12:33:37 -0700 Subject: rcu: Remove list_for_each_continue_rcu() The list_for_each_continue_rcu() macro is no longer used, so this commit removes it. The list_for_each_entry_continue_rcu() macro should be used instead. Signed-off-by: Paul E. McKenney --- include/linux/rculist.h | 17 ----------------- 1 file changed, 17 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rculist.h b/include/linux/rculist.h index e0f0fab20415..c92dd28eaa6c 100644 --- a/include/linux/rculist.h +++ b/include/linux/rculist.h @@ -286,23 +286,6 @@ static inline void list_splice_init_rcu(struct list_head *list, &pos->member != (head); \ pos = list_entry_rcu(pos->member.next, typeof(*pos), member)) - -/** - * list_for_each_continue_rcu - * @pos: the &struct list_head to use as a loop cursor. - * @head: the head for your list. - * - * Iterate over an rcu-protected list, continuing after current point. - * - * This list-traversal primitive may safely run concurrently with - * the _rcu list-mutation primitives such as list_add_rcu() - * as long as the traversal is guarded by rcu_read_lock(). - */ -#define list_for_each_continue_rcu(pos, head) \ - for ((pos) = rcu_dereference_raw(list_next_rcu(pos)); \ - (pos) != (head); \ - (pos) = rcu_dereference_raw(list_next_rcu(pos))) - /** * list_for_each_entry_continue_rcu - continue iteration over list of given type * @pos: the type * to use as a loop cursor. -- cgit v1.2.3 From f0a0e6f282c72247e7c8ec17c68d528c1bb4d49e Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Tue, 23 Oct 2012 13:47:01 -0700 Subject: rcu: Clarify memory-ordering properties of grace-period primitives This commit explicitly states the memory-ordering properties of the RCU grace-period primitives. Although these properties were in some sense implied by the fundmental property of RCU ("a grace period must wait for all pre-existing RCU read-side critical sections to complete"), stating it explicitly will be a great labor-saving device. Reported-by: Oleg Nesterov Signed-off-by: Paul E. McKenney Reviewed-by: Oleg Nesterov --- include/linux/rcupdate.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'include/linux') diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 7c968e4f929e..6256759fb81e 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -90,6 +90,25 @@ extern void do_trace_rcu_torture_read(char *rcutorturename, * that started after call_rcu() was invoked. RCU read-side critical * sections are delimited by rcu_read_lock() and rcu_read_unlock(), * and may be nested. + * + * Note that all CPUs must agree that the grace period extended beyond + * all pre-existing RCU read-side critical section. On systems with more + * than one CPU, this means that when "func()" is invoked, each CPU is + * guaranteed to have executed a full memory barrier since the end of its + * last RCU read-side critical section whose beginning preceded the call + * to call_rcu(). It also means that each CPU executing an RCU read-side + * critical section that continues beyond the start of "func()" must have + * executed a memory barrier after the call_rcu() but before the beginning + * of that RCU read-side critical section. Note that these guarantees + * include CPUs that are offline, idle, or executing in user mode, as + * well as CPUs that are executing in the kernel. + * + * Furthermore, if CPU A invoked call_rcu() and CPU B invoked the + * resulting RCU callback function "func()", then both CPU A and CPU B are + * guaranteed to execute a full memory barrier during the time interval + * between the call to call_rcu() and the invocation of "func()" -- even + * if CPU A and CPU B are the same CPU (but again only if the system has + * more than one CPU). */ extern void call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *head)); @@ -118,6 +137,9 @@ extern void call_rcu(struct rcu_head *head, * OR * - rcu_read_lock_bh() and rcu_read_unlock_bh(), if in process context. * These may be nested. + * + * See the description of call_rcu() for more detailed information on + * memory ordering guarantees. */ extern void call_rcu_bh(struct rcu_head *head, void (*func)(struct rcu_head *head)); @@ -137,6 +159,9 @@ extern void call_rcu_bh(struct rcu_head *head, * OR * anything that disables preemption. * These may be nested. + * + * See the description of call_rcu() for more detailed information on + * memory ordering guarantees. */ extern void call_rcu_sched(struct rcu_head *head, void (*func)(struct rcu_head *rcu)); -- cgit v1.2.3 From 2cd451792db174382aaca96c75bc3bf47a6065fe Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Wed, 14 Nov 2012 11:14:26 +0800 Subject: spi/omap: fix D0/D1 direction confusion 0384e90b8 ("spi/mcspi: allow configuration of pin directions") did what it claimed to do the wrong way around. D0/D1 is configured as output by *clearing* the bits in the conf registers, hence also breaking the former default behaviour. Fix this before that change is merged to mainline. Signed-off-by: Daniel Mack Signed-off-by: Mark Brown --- include/linux/platform_data/spi-omap2-mcspi.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/spi-omap2-mcspi.h b/include/linux/platform_data/spi-omap2-mcspi.h index ce70f7b5a8e1..a65572d53211 100644 --- a/include/linux/platform_data/spi-omap2-mcspi.h +++ b/include/linux/platform_data/spi-omap2-mcspi.h @@ -7,8 +7,8 @@ #define OMAP4_MCSPI_REG_OFFSET 0x100 -#define MCSPI_PINDIR_D0_OUT_D1_IN 0 -#define MCSPI_PINDIR_D0_IN_D1_OUT 1 +#define MCSPI_PINDIR_D0_IN_D1_OUT 0 +#define MCSPI_PINDIR_D0_OUT_D1_IN 1 struct omap2_mcspi_platform_config { unsigned short num_cs; -- cgit v1.2.3 From fe1e43f7190da98b396265639845a6cc0d748aad Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 14 Nov 2012 16:47:10 +0900 Subject: regulator: core: Add regulator_is_supported_voltage_tol() If consumers wish to set voltages based on a tolerance it stands to reason that they will also want to query for support in the same manner. Signed-off-by: Mark Brown Acked-by: Liam Girdwood --- include/linux/regulator/consumer.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h index c43cd3556b1f..49415a23b2d8 100644 --- a/include/linux/regulator/consumer.h +++ b/include/linux/regulator/consumer.h @@ -367,4 +367,12 @@ static inline int regulator_set_voltage_tol(struct regulator *regulator, new_uV - tol_uV, new_uV + tol_uV); } +static inline int regulator_is_supported_voltage_tol(struct regulator *regulator, + int target_uV, int tol_uV) +{ + return regulator_is_supported_voltage(regulator, + target_uV - tol_uV, + target_uV + tol_uV); +} + #endif -- cgit v1.2.3 From 49839dc93970789cea46f5171cd7f6ec11af64c7 Mon Sep 17 00:00:00 2001 From: Paul Walmsley Date: Tue, 6 Nov 2012 16:31:32 +0000 Subject: Revert "ARM: OMAP: convert I2C driver to PM QoS for MPU latency constraints" This reverts commit 3db11feffc1ad2ab9dea27789e6b5b3032827adc (ARM: OMAP: convert I2C driver to PM QoS for MPU latency constraints). This commit causes I2C timeouts to appear on several OMAP3430/3530-based boards: http://marc.info/?l=linux-arm-kernel&m=135071372426971&w=2 http://marc.info/?l=linux-arm-kernel&m=135067558415214&w=2 http://marc.info/?l=linux-arm-kernel&m=135216013608196&w=2 and appears to have been sent for merging before one of its prerequisites was merged: http://marc.info/?l=linux-arm-kernel&m=135219411617621&w=2 Signed-off-by: Paul Walmsley Acked-by: Jean Pihet Signed-off-by: Wolfram Sang --- include/linux/i2c-omap.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/i2c-omap.h b/include/linux/i2c-omap.h index df804ba73e0b..92a0dc75bc74 100644 --- a/include/linux/i2c-omap.h +++ b/include/linux/i2c-omap.h @@ -34,6 +34,7 @@ struct omap_i2c_bus_platform_data { u32 clkrate; u32 rev; u32 flags; + void (*set_mpu_wkup_lat)(struct device *dev, long set); }; #endif -- cgit v1.2.3 From 9aadd70aed60b47e367e7a1a6b9068daba04fe05 Mon Sep 17 00:00:00 2001 From: Paul Walmsley Date: Tue, 6 Nov 2012 16:31:32 +0000 Subject: Revert "ARM: OMAP: convert I2C driver to PM QoS for MPU latency constraints" This reverts commit 3db11feffc1ad2ab9dea27789e6b5b3032827adc (ARM: OMAP: convert I2C driver to PM QoS for MPU latency constraints). This commit causes I2C timeouts to appear on several OMAP3430/3530-based boards: http://marc.info/?l=linux-arm-kernel&m=135071372426971&w=2 http://marc.info/?l=linux-arm-kernel&m=135067558415214&w=2 http://marc.info/?l=linux-arm-kernel&m=135216013608196&w=2 and appears to have been sent for merging before one of its prerequisites was merged: http://marc.info/?l=linux-arm-kernel&m=135219411617621&w=2 Signed-off-by: Paul Walmsley Acked-by: Jean Pihet Signed-off-by: Wolfram Sang --- include/linux/i2c-omap.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/i2c-omap.h b/include/linux/i2c-omap.h index df804ba73e0b..92a0dc75bc74 100644 --- a/include/linux/i2c-omap.h +++ b/include/linux/i2c-omap.h @@ -34,6 +34,7 @@ struct omap_i2c_bus_platform_data { u32 clkrate; u32 rev; u32 flags; + void (*set_mpu_wkup_lat)(struct device *dev, long set); }; #endif -- cgit v1.2.3 From 45aa2c27ada4829bc91bd80455bc67059ac06bc5 Mon Sep 17 00:00:00 2001 From: Josh Cartwright Date: Tue, 13 Nov 2012 17:26:48 -0600 Subject: clk: Add support for fundamental zynq clks Provide simplified models for the necessary clocks on the zynq-7000 platform. Currently, the PLLs, the CPU clock network, and the basic peripheral clock networks (for SDIO, SMC, SPI, QSPI, UART) are modelled. OF bindings are also provided and documented. Signed-off-by: Josh Cartwright Signed-off-by: Soren Brinkmann Acked-by: Mike Turquette Acked-by: Michal Simek --- include/linux/clk/zynq.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 include/linux/clk/zynq.h (limited to 'include/linux') diff --git a/include/linux/clk/zynq.h b/include/linux/clk/zynq.h new file mode 100644 index 000000000000..56be7cd9aa8b --- /dev/null +++ b/include/linux/clk/zynq.h @@ -0,0 +1,24 @@ +/* + * Copyright (C) 2012 National Instruments + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __LINUX_CLK_ZYNQ_H_ +#define __LINUX_CLK_ZYNQ_H_ + +void __init xilinx_zynq_clocks_init(void __iomem *slcr); + +#endif -- cgit v1.2.3 From 2c88ab8c5af7d637d2a9d14b607fa6100fa64236 Mon Sep 17 00:00:00 2001 From: Shubhrajyoti D Date: Mon, 5 Nov 2012 17:53:39 +0530 Subject: ARM: i2c: omap: Remove the i207 errata flag The commit [i2c: omap: use revision check for OMAP_I2C_FLAG_APPLY_ERRATA_I207] uses the revision id instead of the flag. So the flag can be safely removed. Reviewed-by: Felipe Balbi Signed-off-by: Shubhrajyoti D Signed-off-by: Wolfram Sang --- include/linux/i2c-omap.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/i2c-omap.h b/include/linux/i2c-omap.h index 92a0dc75bc74..1b25c04f82d9 100644 --- a/include/linux/i2c-omap.h +++ b/include/linux/i2c-omap.h @@ -21,7 +21,6 @@ #define OMAP_I2C_FLAG_SIMPLE_CLOCK BIT(1) #define OMAP_I2C_FLAG_16BIT_DATA_REG BIT(2) #define OMAP_I2C_FLAG_RESET_REGS_POSTIDLE BIT(3) -#define OMAP_I2C_FLAG_APPLY_ERRATA_I207 BIT(4) #define OMAP_I2C_FLAG_ALWAYS_ARMXOR_CLK BIT(5) #define OMAP_I2C_FLAG_FORCE_19200_INT_CLK BIT(6) /* how the CPU address bus must be translated for I2C unit access */ -- cgit v1.2.3 From e5cc8ef31267317f3e177415c84e3f3602e5bfc9 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 2 Nov 2012 01:41:01 +0100 Subject: ACPI / PM: Provide ACPI PM callback routines for subsystems Some bus types don't support power management natively, but generally there may be device nodes in ACPI tables corresponding to the devices whose bus types they are (under ACPI 5 those bus types may be SPI, I2C and platform). If that is the case, standard ACPI power management may be applied to those devices, although currently the kernel has no means for that. For this reason, provide a set of routines that may be used as power management callbacks for such devices. This may be done in three different ways. (1) Device drivers handling the devices in question may run acpi_dev_pm_attach() in their .probe() routines, which (on success) will cause the devices to be added to the general ACPI PM domain and ACPI power management will be used for them going forward. Then, acpi_dev_pm_detach() may be used to remove the devices from the general ACPI PM domain if ACPI power management is not necessary for them any more. (2) The devices' subsystems may use acpi_subsys_runtime_suspend(), acpi_subsys_runtime_resume(), acpi_subsys_prepare(), acpi_subsys_suspend_late(), acpi_subsys_resume_early() as their power management callbacks in the same way as the general ACPI PM domain does that. (3) The devices' drivers may execute acpi_dev_suspend_late(), acpi_dev_resume_early(), acpi_dev_runtime_suspend(), acpi_dev_runtime_resume() from their power management callbacks as appropriate, if that's absolutely necessary, but it is not recommended to do that, because such drivers may not work without ACPI support as a result. Signed-off-by: Rafael J. Wysocki --- include/linux/acpi.h | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 90be98981102..0676b6ac57fa 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -430,4 +430,38 @@ acpi_status acpi_os_prepare_sleep(u8 sleep_state, #define acpi_os_set_prepare_sleep(func, pm1a_ctrl, pm1b_ctrl) do { } while (0) #endif +#if defined(CONFIG_ACPI) && defined(CONFIG_PM_RUNTIME) +int acpi_dev_runtime_suspend(struct device *dev); +int acpi_dev_runtime_resume(struct device *dev); +int acpi_subsys_runtime_suspend(struct device *dev); +int acpi_subsys_runtime_resume(struct device *dev); +#else +static inline int acpi_dev_runtime_suspend(struct device *dev) { return 0; } +static inline int acpi_dev_runtime_resume(struct device *dev) { return 0; } +static inline int acpi_subsys_runtime_suspend(struct device *dev) { return 0; } +static inline int acpi_subsys_runtime_resume(struct device *dev) { return 0; } +#endif + +#ifdef CONFIG_ACPI_SLEEP +int acpi_dev_suspend_late(struct device *dev); +int acpi_dev_resume_early(struct device *dev); +int acpi_subsys_prepare(struct device *dev); +int acpi_subsys_suspend_late(struct device *dev); +int acpi_subsys_resume_early(struct device *dev); +#else +static inline int acpi_dev_suspend_late(struct device *dev) { return 0; } +static inline int acpi_dev_resume_early(struct device *dev) { return 0; } +static inline int acpi_subsys_prepare(struct device *dev) { return 0; } +static inline int acpi_subsys_suspend_late(struct device *dev) { return 0; } +static inline int acpi_subsys_resume_early(struct device *dev) { return 0; } +#endif + +#if defined(CONFIG_ACPI) && defined(CONFIG_PM) +int acpi_dev_pm_attach(struct device *dev); +int acpi_dev_pm_detach(struct device *dev); +#else +static inline int acpi_dev_pm_attach(struct device *dev) { return -ENODEV; } +static inline void acpi_dev_pm_detach(struct device *dev) {} +#endif + #endif /*_LINUX_ACPI_H*/ -- cgit v1.2.3 From 1bad2f19f7f79d1ec9e6c48168fd7ce8dc1c305f Mon Sep 17 00:00:00 2001 From: Kristen Carlson Accardi Date: Fri, 26 Oct 2012 13:39:15 +0200 Subject: ACPI / Sleep: add acpi_sleep=nonvs_s3 parameter The ACPI specificiation would like us to save NVS at hibernation time, but makes no mention of saving NVS over S3. Not all versions of Windows do this either, and it is clear that not all machines need NVS saved/restored over S3. Allow the user to improve their suspend/resume time by disabling the NVS save/restore at S3 time, but continue to do the NVS save/restore for S4 as specified. Signed-off-by: Kristen Carlson Accardi Signed-off-by: Rafael J. Wysocki --- include/linux/acpi.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 90be98981102..3cf93491125c 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -261,6 +261,7 @@ int acpi_resources_are_enforced(void); void __init acpi_no_s4_hw_signature(void); void __init acpi_old_suspend_ordering(void); void __init acpi_nvs_nosave(void); +void __init acpi_nvs_nosave_s3(void); #endif /* CONFIG_PM_SLEEP */ struct acpi_osc_context { -- cgit v1.2.3 From 9743fdea9f9473cd2440741342a5ed8e19eb51bd Mon Sep 17 00:00:00 2001 From: Yuanhan Liu Date: Fri, 26 Oct 2012 13:39:24 +0200 Subject: ACPI: move acpi_no_s4_hw_signature() declaration into #ifdef CONFIG_HIBERNATION MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit acpi_no_s4_hw_signature is defined in #ifdef CONFIG_HIBERNATION block, but the current code put the declaration in #ifdef CONFIG_PM_SLEEP block. I happened to meet this issue when I turned off PM_SLEEP config manually: arch/x86/kernel/acpi/sleep.c:100:4: error: implicit declaration of function ‘acpi_no_s4_hw_signature’ [-Werror=implicit-function-declaration] Signed-off-by: Yuanhan Liu Reviewed-by: Fengguang Wu Signed-off-by: Rafael J. Wysocki --- include/linux/acpi.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 3cf93491125c..87edfcc0ab62 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -257,8 +257,11 @@ int acpi_check_region(resource_size_t start, resource_size_t n, int acpi_resources_are_enforced(void); -#ifdef CONFIG_PM_SLEEP +#ifdef CONFIG_HIBERNATION void __init acpi_no_s4_hw_signature(void); +#endif + +#ifdef CONFIG_PM_SLEEP void __init acpi_old_suspend_ordering(void); void __init acpi_nvs_nosave(void); void __init acpi_nvs_nosave_s3(void); -- cgit v1.2.3 From 06f64c8f239a47b359c60301914c783b56b32c13 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Wed, 31 Oct 2012 22:44:33 +0100 Subject: driver core / ACPI: Move ACPI support to core device and driver types With ACPI 5 we are starting to see devices that don't natively support discovery but can be enumerated with the help of the ACPI namespace. Typically, these devices can be represented in the Linux device driver model as platform devices or some serial bus devices, like SPI or I2C devices. Since we want to re-use existing drivers for those devices, we need a way for drivers to specify the ACPI IDs of supported devices, so that they can be matched against device nodes in the ACPI namespace. To this end, it is sufficient to add a pointer to an array of supported ACPI device IDs, that can be provided by the driver, to struct device. Moreover, things like ACPI power management need to have access to the ACPI handle of each supported device, because that handle is used to invoke AML methods associated with the corresponding ACPI device node. The ACPI handles of devices are now stored in the archdata member structure of struct device whose definition depends on the architecture and includes the ACPI handle only on x86 and ia64. Since the pointer to an array of supported ACPI IDs is added to struct device_driver in an architecture-independent way, it is logical to move the ACPI handle from archdata to struct device itself at the same time. This also makes code more straightforward in some places and follows the example of Device Trees that have a poiter to struct device_node in there too. This changeset is based on Mika Westerberg's work. Signed-off-by: Mika Westerberg Acked-by: Greg Kroah-Hartman Acked-by: H. Peter Anvin Acked-by: Tony Luck Signed-off-by: Rafael J. Wysocki --- include/linux/device.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index 86ef6ab553b1..cc3aee57a46e 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -190,6 +190,7 @@ extern struct klist *bus_get_device_klist(struct bus_type *bus); * @mod_name: Used for built-in modules. * @suppress_bind_attrs: Disables bind/unbind via sysfs. * @of_match_table: The open firmware table. + * @acpi_match_table: The ACPI match table. * @probe: Called to query the existence of a specific device, * whether this driver can work with it, and bind the driver * to a specific device. @@ -223,6 +224,7 @@ struct device_driver { bool suppress_bind_attrs; /* disables bind/unbind via sysfs */ const struct of_device_id *of_match_table; + const struct acpi_device_id *acpi_match_table; int (*probe) (struct device *dev); int (*remove) (struct device *dev); @@ -616,6 +618,7 @@ struct device_dma_parameters { * @dma_mem: Internal for coherent mem override. * @archdata: For arch-specific additions. * @of_node: Associated device tree node. + * @acpi_handle: Associated ACPI device node's namespace handle. * @devt: For creating the sysfs "dev". * @id: device instance * @devres_lock: Spinlock to protect the resource of the device. @@ -680,6 +683,7 @@ struct device { struct dev_archdata archdata; struct device_node *of_node; /* associated device tree node */ + void *acpi_handle; /* associated ACPI device node */ dev_t devt; /* dev_t, creates the sysfs "dev" */ u32 id; /* device instance */ -- cgit v1.2.3 From cf761af9ee0f2c172710ad2b7ca029016b5d4c45 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Wed, 31 Oct 2012 22:44:41 +0100 Subject: ACPI: Provide generic functions for matching ACPI device nodes Introduce function acpi_match_device() allowing callers to match struct device objects with populated acpi_handle fields against arrays of ACPI device IDs. Also introduce function acpi_driver_match_device() using acpi_match_device() internally and allowing callers to match a struct device object against an array of ACPI device IDs provided by a device driver. Additionally, introduce macro ACPI_PTR() that may be used by device drivers to escape pointers to data structures whose definitions depend on CONFIG_ACPI. Signed-off-by: Mika Westerberg Acked-by: Greg Kroah-Hartman Acked-by: H. Peter Anvin Acked-by: Tony Luck Signed-off-by: Rafael J. Wysocki --- include/linux/acpi.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 90be98981102..48761cb481db 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -26,6 +26,7 @@ #define _LINUX_ACPI_H #include /* for struct resource */ +#include #ifdef CONFIG_ACPI @@ -364,6 +365,17 @@ extern int acpi_nvs_register(__u64 start, __u64 size); extern int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *), void *data); +const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids, + const struct device *dev); + +static inline bool acpi_driver_match_device(struct device *dev, + const struct device_driver *drv) +{ + return !!acpi_match_device(drv->acpi_match_table, dev); +} + +#define ACPI_PTR(_ptr) (_ptr) + #else /* !CONFIG_ACPI */ #define acpi_disabled 1 @@ -418,6 +430,22 @@ static inline int acpi_nvs_for_each_region(int (*func)(__u64, __u64, void *), return 0; } +struct acpi_device_id; + +static inline const struct acpi_device_id *acpi_match_device( + const struct acpi_device_id *ids, const struct device *dev) +{ + return NULL; +} + +static inline bool acpi_driver_match_device(struct device *dev, + const struct device_driver *drv) +{ + return false; +} + +#define ACPI_PTR(_ptr) (NULL) + #endif /* !CONFIG_ACPI */ #ifdef CONFIG_ACPI -- cgit v1.2.3 From 046d9ce6820e99087e81511284045eada94950e8 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 15 Nov 2012 00:30:01 +0100 Subject: ACPI: Move device resources interpretation code from PNP to ACPI core Move some code used for parsing ACPI device resources from the PNP subsystem to the ACPI core, so that other bus types (platform, SPI, I2C) can use the same routines for parsing resources in a consistent way, without duplicating code. Signed-off-by: Rafael J. Wysocki Reviewed-by: Mika Westerberg Tested-by: Mika Westerberg --- include/linux/acpi.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 48761cb481db..16fcaf8dad3d 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -251,6 +251,16 @@ extern int pnpacpi_disabled; #define PXM_INVAL (-1) +bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res); +bool acpi_dev_resource_io(struct acpi_resource *ares, struct resource *res); +bool acpi_dev_resource_address_space(struct acpi_resource *ares, + struct resource *res); +bool acpi_dev_resource_ext_address_space(struct acpi_resource *ares, + struct resource *res); +unsigned long acpi_dev_irq_flags(u8 triggering, u8 polarity, u8 shareable); +bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index, + struct resource *res); + int acpi_check_resource_conflict(const struct resource *res); int acpi_check_region(resource_size_t start, resource_size_t n, -- cgit v1.2.3 From 8e345c991c8c7a3c081199ef77deada79e37618a Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 15 Nov 2012 00:30:21 +0100 Subject: ACPI: Centralized processing of ACPI device resources Currently, whoever wants to use ACPI device resources has to call acpi_walk_resources() to browse the buffer returned by the _CRS method for the given device and create filters passed to that routine to apply to the individual resource items. This generally is cumbersome, time-consuming and inefficient. Moreover, it may be problematic if resource conflicts need to be resolved, because the different users of _CRS will need to do that in a consistent way. However, if there are resource conflicts, the ACPI core should be able to resolve them centrally instead of relying on various users of acpi_walk_resources() to handle them correctly together. For this reason, introduce a new function, acpi_dev_get_resources(), that can be used by subsystems to obtain a list of struct resource objects corresponding to the ACPI device resources returned by _CRS and, if necessary, to apply additional preprocessing routine to the ACPI resources before converting them to the struct resource format. Make the ACPI code that creates platform device objects use acpi_dev_get_resources() for resource processing instead of executing acpi_walk_resources() twice by itself, which causes it to be much more straightforward and easier to follow. In the future, acpi_dev_get_resources() can be extended to meet the needs of the ACPI PNP subsystem and other users of _CRS in the kernel. Signed-off-by: Rafael J. Wysocki Reviewed-by: Mika Westerberg Tested-by: Mika Westerberg --- include/linux/acpi.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 16fcaf8dad3d..32fbc4e73a56 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -261,6 +261,16 @@ unsigned long acpi_dev_irq_flags(u8 triggering, u8 polarity, u8 shareable); bool acpi_dev_resource_interrupt(struct acpi_resource *ares, int index, struct resource *res); +struct resource_list_entry { + struct list_head node; + struct resource res; +}; + +void acpi_dev_free_resource_list(struct list_head *list); +int acpi_dev_get_resources(struct acpi_device *adev, struct list_head *list, + int (*preproc)(struct acpi_resource *, void *), + void *preproc_data); + int acpi_check_resource_conflict(const struct resource *res); int acpi_check_region(resource_size_t start, resource_size_t n, -- cgit v1.2.3 From 4b972f0b04eaae645b22d99479b9aea43c3d64e7 Mon Sep 17 00:00:00 2001 From: viresh kumar Date: Tue, 23 Oct 2012 01:23:43 +0200 Subject: cpufreq / core: Fix printing of governor and driver name Arrays for governer and driver name are of size CPUFREQ_NAME_LEN or 16. i.e. 15 bytes for name and 1 for trailing '\0'. When cpufreq driver print these names (for sysfs), it includes '\n' or ' ' in the fmt string and still passes length as CPUFREQ_NAME_LEN. If the driver or governor names are using all 15 fields allocated to them, then the trailing '\n' or ' ' will never be printed. And so commands like: root@linaro-developer# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver will print something like: cpufreq_foodrvroot@linaro-developer# Fix this by increasing print length by one character. Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- include/linux/cpufreq.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index b60f6ba01d0c..fc4b78510151 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -22,6 +22,8 @@ #include #define CPUFREQ_NAME_LEN 16 +/* Print length for names. Extra 1 space for accomodating '\n' in prints */ +#define CPUFREQ_NAME_PLEN (CPUFREQ_NAME_LEN + 1) /********************************************************************* -- cgit v1.2.3 From 2aacdfff9c6958723aa5076003247933cefc32ea Mon Sep 17 00:00:00 2001 From: viresh kumar Date: Tue, 23 Oct 2012 01:28:05 +0200 Subject: cpufreq: Move common part from governors to separate file, v2 Multiple cpufreq governers have defined similar get_cpu_idle_time_***() routines. These routines must be moved to some common place, so that all governors can use them. So moving them to cpufreq_governor.c, which seems to be a better place for keeping these routines. Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- include/linux/cpufreq.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index fc4b78510151..d03c21993052 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -11,6 +11,7 @@ #ifndef _LINUX_CPUFREQ_H #define _LINUX_CPUFREQ_H +#include #include #include #include @@ -407,5 +408,9 @@ void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table, void cpufreq_frequency_table_put_attr(unsigned int cpu); +/********************************************************************* + * Governor Helpers * + *********************************************************************/ +cputime64_t get_cpu_idle_time(unsigned int cpu, cputime64_t *wall); #endif /* _LINUX_CPUFREQ_H */ -- cgit v1.2.3 From 4471a34f9a1f2da220272e823bdb8e8fa83a7661 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Fri, 26 Oct 2012 00:47:42 +0200 Subject: cpufreq: governors: remove redundant code Initially ondemand governor was written and then using its code conservative governor is written. It used a lot of code from ondemand governor, but copy of code was created instead of using the same routines from both governors. Which increased code redundancy, which is difficult to manage. This patch is an attempt to move common part of both the governors to cpufreq_governor.c file to come over above mentioned issues. This shouldn't change anything from functionality point of view. Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- include/linux/cpufreq.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index d03c21993052..a55b88eaf96a 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -407,10 +407,4 @@ void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table, unsigned int cpu); void cpufreq_frequency_table_put_attr(unsigned int cpu); - -/********************************************************************* - * Governor Helpers * - *********************************************************************/ -cputime64_t get_cpu_idle_time(unsigned int cpu, cputime64_t *wall); - #endif /* _LINUX_CPUFREQ_H */ -- cgit v1.2.3 From 69a37beabf1f0a6705c08e879bdd5d82ff6486c4 Mon Sep 17 00:00:00 2001 From: Youquan Song Date: Fri, 26 Oct 2012 12:26:41 +0200 Subject: cpuidle: Quickly notice prediction failure for repeat mode The prediction for future is difficult and when the cpuidle governor prediction fails and govenor possibly choose the shallower C-state than it should. How to quickly notice and find the failure becomes important for power saving. cpuidle menu governor has a method to predict the repeat pattern if there are 8 C-states residency which are continuous and the same or very close, so it will predict the next C-states residency will keep same residency time. There is a real case that turbostat utility (tools/power/x86/turbostat) at kernel 3.3 or early. turbostat utility will read 10 registers one by one at Sandybridge, so it will generate 10 IPIs to wake up idle CPUs. So cpuidle menu governor will predict it is repeat mode and there is another IPI wake up idle CPU soon, so it keeps idle CPU stay at C1 state even though CPU is totally idle. However, in the turbostat, following 10 registers reading is sleep 5 seconds by default, so the idle CPU will keep at C1 for a long time though it is idle until break event occurs. In a idle Sandybridge system, run "./turbostat -v", we will notice that deep C-state dangles between "70% ~ 99%". After patched the kernel, we will notice deep C-state stays at >99.98%. In the patch, a timer is added when menu governor detects a repeat mode and choose a shallow C-state. The timer is set to a time out value that greater than predicted time, and we conclude repeat mode prediction failure if timer is triggered. When repeat mode happens as expected, the timer is not triggered and CPU waken up from C-states and it will cancel the timer initiatively. When repeat mode does not happen, the timer will be time out and menu governor will quickly notice that the repeat mode prediction fails and then re-evaluates deeper C-states possibility. Below is another case which will clearly show the patch much benefit: #include #include #include #include #include #include #include volatile int * shutdown; volatile long * count; int delay = 20; int loop = 8; void usage(void) { fprintf(stderr, "Usage: idle_predict [options]\n" " --help -h Print this help\n" " --thread -n Thread number\n" " --loop -l Loop times in shallow Cstate\n" " --delay -t Sleep time (uS)in shallow Cstate\n"); } void *simple_loop() { int idle_num = 1; while (!(*shutdown)) { *count = *count + 1; if (idle_num % loop) usleep(delay); else { /* sleep 1 second */ usleep(1000000); idle_num = 0; } idle_num++; } } static void sighand(int sig) { *shutdown = 1; } int main(int argc, char *argv[]) { sigset_t sigset; int signum = SIGALRM; int i, c, er = 0, thread_num = 8; pthread_t pt[1024]; static char optstr[] = "n:l:t:h:"; while ((c = getopt(argc, argv, optstr)) != EOF) switch (c) { case 'n': thread_num = atoi(optarg); break; case 'l': loop = atoi(optarg); break; case 't': delay = atoi(optarg); break; case 'h': default: usage(); exit(1); } printf("thread=%d,loop=%d,delay=%d\n",thread_num,loop,delay); count = malloc(sizeof(long)); shutdown = malloc(sizeof(int)); *count = 0; *shutdown = 0; sigemptyset(&sigset); sigaddset(&sigset, signum); sigprocmask (SIG_BLOCK, &sigset, NULL); signal(SIGINT, sighand); signal(SIGTERM, sighand); for(i = 0; i < thread_num ; i++) pthread_create(&pt[i], NULL, simple_loop, NULL); for (i = 0; i < thread_num; i++) pthread_join(pt[i], NULL); exit(0); } Get powertop V2 from git://github.com/fenrus75/powertop, build powertop. After build the above test application, then run it. Test plaform can be Intel Sandybridge or other recent platforms. #./idle_predict -l 10 & #./powertop We will find that deep C-state will dangle between 40%~100% and much time spent on C1 state. It is because menu governor wrongly predict that repeat mode is kept, so it will choose the C1 shallow C-state even though it has chance to sleep 1 second in deep C-state. While after patched the kernel, we find that deep C-state will keep >99.6%. Signed-off-by: Rik van Riel Signed-off-by: Youquan Song Signed-off-by: Rafael J. Wysocki --- include/linux/tick.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/tick.h b/include/linux/tick.h index f37fceb69b73..1a6567b48492 100644 --- a/include/linux/tick.h +++ b/include/linux/tick.h @@ -142,4 +142,10 @@ static inline u64 get_cpu_idle_time_us(int cpu, u64 *unused) { return -1; } static inline u64 get_cpu_iowait_time_us(int cpu, u64 *unused) { return -1; } # endif /* !NO_HZ */ +# ifdef CONFIG_CPU_IDLE_GOV_MENU +extern void menu_hrtimer_cancel(void); +# else +static inline void menu_hrtimer_cancel(void) {} +# endif /* CONFIG_CPU_IDLE_GOV_MENU */ + #endif -- cgit v1.2.3 From 349631e0e411fefa2fed7e0a30b97704562dbd6b Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Wed, 31 Oct 2012 01:05:16 +0100 Subject: cpuidle / sysfs: move structure declaration into the sysfs.c file The structure cpuidle_state_kobj is not used anywhere except in the sysfs.c file. The definition of this structure is not needed in the cpuidle header file. This patch moves it to the sysfs.c file in order to encapsulate the code a bit more. Signed-off-by: Daniel Lezcano Signed-off-by: Rafael J. Wysocki --- include/linux/cpuidle.h | 7 ------- 1 file changed, 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 279b1eaa8b73..7daf0e3b93bd 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -82,13 +82,6 @@ cpuidle_set_statedata(struct cpuidle_state_usage *st_usage, void *data) st_usage->driver_data = data; } -struct cpuidle_state_kobj { - struct cpuidle_state *state; - struct cpuidle_state_usage *state_usage; - struct completion kobj_unregister; - struct kobject kobj; -}; - struct cpuidle_device { unsigned int registered:1; unsigned int enabled:1; -- cgit v1.2.3 From 42f67f2acab2b7179c0d1ab234869e391448dfa6 Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Wed, 31 Oct 2012 16:44:45 +0000 Subject: cpuidle: move driver's refcount to cpuidle We want to support different cpuidle drivers co-existing together. In this case we should move the refcount to the cpuidle_driver structure to handle several drivers at a time. Signed-off-by: Daniel Lezcano Acked-by: Peter De Schrijver Signed-off-by: Rafael J. Wysocki --- include/linux/cpuidle.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 7daf0e3b93bd..d08e1afa4919 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -124,6 +124,7 @@ static inline int cpuidle_get_last_residency(struct cpuidle_device *dev) struct cpuidle_driver { const char *name; struct module *owner; + int refcnt; unsigned int power_specified:1; /* set to 1 to use the core cpuidle time keeping (for all states). */ -- cgit v1.2.3 From bf4d1b5ddb78f86078ac6ae0415802d5f0c68f92 Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Wed, 31 Oct 2012 16:44:48 +0000 Subject: cpuidle: support multiple drivers With the tegra3 and the big.LITTLE [1] new architectures, several cpus with different characteristics (latencies and states) can co-exists on the system. The cpuidle framework has the limitation of handling only identical cpus. This patch removes this limitation by introducing the multiple driver support for cpuidle. This option is configurable at compile time and should be enabled for the architectures mentioned above. So there is no impact for the other platforms if the option is disabled. The option defaults to 'n'. Note the multiple drivers support is also compatible with the existing drivers, even if just one driver is needed, all the cpu will be tied to this driver using an extra small chunk of processor memory. The multiple driver support use a per-cpu driver pointer instead of a global variable and the accessor to this variable are done from a cpu context. In order to keep the compatibility with the existing drivers, the function 'cpuidle_register_driver' and 'cpuidle_unregister_driver' will register the specified driver for all the cpus. The semantic for the output of /sys/devices/system/cpu/cpuidle/current_driver remains the same except the driver name will be related to the current cpu. The /sys/devices/system/cpu/cpu[0-9]/cpuidle/driver/name files are added allowing to read the per cpu driver name. [1] http://lwn.net/Articles/481055/ Signed-off-by: Daniel Lezcano Acked-by: Peter De Schrijver Signed-off-by: Rafael J. Wysocki --- include/linux/cpuidle.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index d08e1afa4919..3711b34dc4f9 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -91,7 +91,7 @@ struct cpuidle_device { int state_count; struct cpuidle_state_usage states_usage[CPUIDLE_STATE_MAX]; struct cpuidle_state_kobj *kobjs[CPUIDLE_STATE_MAX]; - + struct cpuidle_driver_kobj *kobj_driver; struct list_head device_list; struct kobject kobj; struct completion kobj_unregister; @@ -157,6 +157,10 @@ extern int cpuidle_wrap_enter(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index)); extern int cpuidle_play_dead(void); +extern struct cpuidle_driver *cpuidle_get_cpu_driver(struct cpuidle_device *dev); +extern int cpuidle_register_cpu_driver(struct cpuidle_driver *drv, int cpu); +extern void cpuidle_unregister_cpu_driver(struct cpuidle_driver *drv, int cpu); + #else static inline void disable_cpuidle(void) { } static inline int cpuidle_idle_call(void) { return -ENODEV; } @@ -183,7 +187,6 @@ static inline int cpuidle_wrap_enter(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index)) { return -ENODEV; } static inline int cpuidle_play_dead(void) {return -ENODEV; } - #endif #ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED -- cgit v1.2.3 From 7e6fdd4bad033fa2d73716377b184fa975b0d985 Mon Sep 17 00:00:00 2001 From: Rajagopal Venkat Date: Fri, 26 Oct 2012 01:50:09 +0200 Subject: PM / devfreq: Core updates to support devices which can idle Prepare devfreq core framework to support devices which can idle. When device idleness is detected perhaps through runtime-pm, need some mechanism to suspend devfreq load monitoring and resume back when device is online. Present code continues monitoring unless device is removed from devfreq core. This patch introduces following design changes, - use per device work instead of global work to monitor device load. This enables suspend/resume of device devfreq and reduces monitoring code complexity. - decouple delayed work based load monitoring logic from core by introducing helpers functions to be used by governors. This provides flexibility for governors either to use delayed work based monitoring functions or to implement their own mechanism. - devfreq core interacts with governors via events to perform specific actions. These events include start/stop devfreq. This sets ground for adding suspend/resume events. The devfreq apis are not modified and are kept intact. Signed-off-by: Rajagopal Venkat Acked-by: MyungJoo Ham Signed-off-by: Rafael J. Wysocki --- include/linux/devfreq.h | 34 ++++++++++------------------------ 1 file changed, 10 insertions(+), 24 deletions(-) (limited to 'include/linux') diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h index 281c72a3b9d5..9cdffde74bb5 100644 --- a/include/linux/devfreq.h +++ b/include/linux/devfreq.h @@ -91,25 +91,18 @@ struct devfreq_dev_profile { * status of the device (load = busy_time / total_time). * If no_central_polling is set, this callback is called * only with update_devfreq() notified by OPP. - * @init Called when the devfreq is being attached to a device - * @exit Called when the devfreq is being removed from a - * device. Governor should stop any internal routines - * before return because related data may be - * freed after exit(). - * @no_central_polling Do not use devfreq's central polling mechanism. - * When this is set, devfreq will not call - * get_target_freq with devfreq_monitor(). However, - * devfreq will call get_target_freq with - * devfreq_update() notified by OPP framework. + * @event_handler Callback for devfreq core framework to notify events + * to governors. Events include per device governor + * init and exit, opp changes out of devfreq, suspend + * and resume of per device devfreq during device idle. * * Note that the callbacks are called with devfreq->lock locked by devfreq. */ struct devfreq_governor { const char name[DEVFREQ_NAME_LEN]; int (*get_target_freq)(struct devfreq *this, unsigned long *freq); - int (*init)(struct devfreq *this); - void (*exit)(struct devfreq *this); - const bool no_central_polling; + int (*event_handler)(struct devfreq *devfreq, + unsigned int event, void *data); }; /** @@ -124,18 +117,13 @@ struct devfreq_governor { * @nb notifier block used to notify devfreq object that it should * reevaluate operable frequencies. Devfreq users may use * devfreq.nb to the corresponding register notifier call chain. - * @polling_jiffies interval in jiffies. + * @work delayed work for load monitoring. * @previous_freq previously configured frequency value. - * @next_polling the number of remaining jiffies to poll with - * "devfreq_monitor" executions to reevaluate - * frequency/voltage of the device. Set by - * profile's polling_ms interval. * @data Private data of the governor. The devfreq framework does not * touch this. - * @being_removed a flag to mark that this object is being removed in - * order to prevent trying to remove the object multiple times. * @min_freq Limit minimum frequency requested by user (0: none) * @max_freq Limit maximum frequency requested by user (0: none) + * @stop_polling devfreq polling status of a device. * * This structure stores the devfreq information for a give device. * @@ -153,17 +141,15 @@ struct devfreq { struct devfreq_dev_profile *profile; const struct devfreq_governor *governor; struct notifier_block nb; + struct delayed_work work; - unsigned long polling_jiffies; unsigned long previous_freq; - unsigned int next_polling; void *data; /* private data for governors */ - bool being_removed; - unsigned long min_freq; unsigned long max_freq; + bool stop_polling; }; #if defined(CONFIG_PM_DEVFREQ) -- cgit v1.2.3 From 206c30cfeb7c05dfb9fdfd81b1deb933627e43c1 Mon Sep 17 00:00:00 2001 From: Rajagopal Venkat Date: Fri, 26 Oct 2012 01:50:18 +0200 Subject: PM / devfreq: Add suspend and resume apis Add devfreq suspend/resume apis for devfreq users. This patch supports suspend and resume of devfreq load monitoring, required for devices which can idle. Signed-off-by: Rajagopal Venkat Acked-by: MyungJoo Ham Signed-off-by: Rafael J. Wysocki --- include/linux/devfreq.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h index 9cdffde74bb5..ee243a3229b8 100644 --- a/include/linux/devfreq.h +++ b/include/linux/devfreq.h @@ -158,6 +158,8 @@ extern struct devfreq *devfreq_add_device(struct device *dev, const struct devfreq_governor *governor, void *data); extern int devfreq_remove_device(struct devfreq *devfreq); +extern int devfreq_suspend_device(struct devfreq *devfreq); +extern int devfreq_resume_device(struct devfreq *devfreq); /* Helper functions for devfreq user device driver with OPP. */ extern struct opp *devfreq_recommended_opp(struct device *dev, @@ -211,6 +213,16 @@ static int devfreq_remove_device(struct devfreq *devfreq) return 0; } +static int devfreq_suspend_device(struct devfreq *devfreq) +{ + return 0; +} + +static int devfreq_resume_device(struct devfreq *devfreq) +{ + return 0; +} + static struct opp *devfreq_recommended_opp(struct device *dev, unsigned long *freq, u32 flags) { -- cgit v1.2.3 From 7f98a905dca6e4f144cdd4462edeac00c2bdc379 Mon Sep 17 00:00:00 2001 From: Rajagopal Venkat Date: Fri, 26 Oct 2012 01:50:26 +0200 Subject: PM / devfreq: Add current freq callback in device profile Devfreq returns governor predicted frequency as current frequency via sysfs interface. But device may not support all frequencies that governor predicts. So add a callback in device profile to get current freq from driver. Also add a new sysfs node to expose governor predicted next target frequency. Signed-off-by: Rajagopal Venkat Acked-by: MyungJoo Ham Signed-off-by: Rafael J. Wysocki --- include/linux/devfreq.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h index ee243a3229b8..7e2e2ea4a70f 100644 --- a/include/linux/devfreq.h +++ b/include/linux/devfreq.h @@ -66,6 +66,8 @@ struct devfreq_dev_status { * explained above with "DEVFREQ_FLAG_*" macros. * @get_dev_status The device should provide the current performance * status to devfreq, which is used by governors. + * @get_cur_freq The device should provide the current frequency + * at which it is operating. * @exit An optional callback that is called when devfreq * is removing the devfreq object due to error or * from devfreq_remove_device() call. If the user @@ -79,6 +81,7 @@ struct devfreq_dev_profile { int (*target)(struct device *dev, unsigned long *freq, u32 flags); int (*get_dev_status)(struct device *dev, struct devfreq_dev_status *stat); + int (*get_cur_freq)(struct device *dev, unsigned long *freq); void (*exit)(struct device *dev); }; -- cgit v1.2.3 From aa0010f880ab542da3ad0e72992f2dc518ac68a0 Mon Sep 17 00:00:00 2001 From: Amerigo Wang Date: Sun, 11 Nov 2012 21:52:33 +0000 Subject: net: convert __IPTUNNEL_XMIT() to an inline function __IPTUNNEL_XMIT() is an ugly macro, convert it to a static inline function, so make it more readable. IPTUNNEL_XMIT() is unused, just remove it. Cc: David S. Miller Signed-off-by: Cong Wang Signed-off-by: David S. Miller --- include/linux/if_tunnel.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/if_tunnel.h b/include/linux/if_tunnel.h index 1cc595a67cc9..06d1d5badd36 100644 --- a/include/linux/if_tunnel.h +++ b/include/linux/if_tunnel.h @@ -4,5 +4,15 @@ #include #include #include +#include + +/* often modified stats are per cpu, other are shared (netdev->stats) */ +struct pcpu_tstats { + u64 rx_packets; + u64 rx_bytes; + u64 tx_packets; + u64 tx_bytes; + struct u64_stats_sync syncp; +}; #endif /* _IF_TUNNEL_H_ */ -- cgit v1.2.3 From e086cadc08e259150b2ab8f7f4a16dbf9e3c2f22 Mon Sep 17 00:00:00 2001 From: Amerigo Wang Date: Sun, 11 Nov 2012 21:52:34 +0000 Subject: net: unify for_each_ip_tunnel_rcu() The defitions of for_each_ip_tunnel_rcu() are same, so unify it. Also, don't hide the parameter 't'. Cc: David S. Miller Signed-off-by: Cong Wang Signed-off-by: David S. Miller --- include/linux/if_tunnel.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/if_tunnel.h b/include/linux/if_tunnel.h index 06d1d5badd36..f4e56ecd0b1a 100644 --- a/include/linux/if_tunnel.h +++ b/include/linux/if_tunnel.h @@ -6,6 +6,13 @@ #include #include +/* + * Locking : hash tables are protected by RCU and RTNL + */ + +#define for_each_ip_tunnel_rcu(pos, start) \ + for (pos = rcu_dereference(start); pos; pos = rcu_dereference(pos->next)) + /* often modified stats are per cpu, other are shared (netdev->stats) */ struct pcpu_tstats { u64 rx_packets; -- cgit v1.2.3 From 1cf3d8b3d24cd383ddfd5442c83ec5c355ffc2f7 Mon Sep 17 00:00:00 2001 From: Nathan Fontenot Date: Tue, 2 Oct 2012 16:57:57 +0000 Subject: powerpc+of: Add of node/property notification chain for adds and removes This patch moves the notification chain for updates to the device tree from the powerpc/pseries code to the base OF code. This makes this functionality available to all architectures. Additionally the notification chain is updated to allow notifications for property add/remove/update. To make this work a pointer to a new struct (of_prop_reconfig) is passed to the routines in the notification chain. The of_prop_reconfig property contains a pointer to the node containing the property and a pointer to the property itself. In the case of property updates, the property pointer refers to the new property. Signed-off-by: Nathan Fontenot Acked-by: Rob Herring Acked-by: Grant Likely Signed-off-by: Benjamin Herrenschmidt --- include/linux/of.h | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index 72843b72a2b2..fb5d87b66e3e 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -22,6 +22,7 @@ #include #include #include +#include #include #include @@ -272,11 +273,24 @@ extern int prom_remove_property(struct device_node *np, struct property *prop); extern int prom_update_property(struct device_node *np, struct property *newprop); -#if defined(CONFIG_OF_DYNAMIC) /* For updating the device tree at runtime */ -extern void of_attach_node(struct device_node *); -extern void of_detach_node(struct device_node *); -#endif +#define OF_RECONFIG_ATTACH_NODE 0x0001 +#define OF_RECONFIG_DETACH_NODE 0x0002 +#define OF_RECONFIG_ADD_PROPERTY 0x0003 +#define OF_RECONFIG_REMOVE_PROPERTY 0x0004 +#define OF_RECONFIG_UPDATE_PROPERTY 0x0005 + +struct of_prop_reconfig { + struct device_node *dn; + struct property *prop; +}; + +extern int of_reconfig_notifier_register(struct notifier_block *); +extern int of_reconfig_notifier_unregister(struct notifier_block *); +extern int of_reconfig_notify(unsigned long, void *); + +extern int of_attach_node(struct device_node *); +extern int of_detach_node(struct device_node *); #define of_match_ptr(_ptr) (_ptr) -- cgit v1.2.3 From 79d1c712958f94372482ad74578b00f44e744c12 Mon Sep 17 00:00:00 2001 From: Nathan Fontenot Date: Tue, 2 Oct 2012 16:58:46 +0000 Subject: powerpc+of: Rename the drivers/of prom_* functions to of_* Rename the prom_*_property routines of the generic OF code to of_*_property. This brings them in line with the naming used by the rest of the OF code. Signed-off-by: Nathan Fontenot Acked-by: Geoff Levand Acked-by: Rob Herring Acked-by: Grant Likely Signed-off-by: Benjamin Herrenschmidt --- include/linux/of.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index fb5d87b66e3e..a093b2fe5dfb 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -268,10 +268,9 @@ extern int of_alias_get_id(struct device_node *np, const char *stem); extern int of_machine_is_compatible(const char *compat); -extern int prom_add_property(struct device_node* np, struct property* prop); -extern int prom_remove_property(struct device_node *np, struct property *prop); -extern int prom_update_property(struct device_node *np, - struct property *newprop); +extern int of_add_property(struct device_node *np, struct property *prop); +extern int of_remove_property(struct device_node *np, struct property *prop); +extern int of_update_property(struct device_node *np, struct property *newprop); /* For updating the device tree at runtime */ #define OF_RECONFIG_ATTACH_NODE 0x0001 -- cgit v1.2.3 From 3d567e0e291c4ffd041cf653aea3c38a1d5f4620 Mon Sep 17 00:00:00 2001 From: Nithin Nayak Sujir Date: Wed, 14 Nov 2012 14:44:26 +0000 Subject: tg3: Set 10_100_ONLY flag for additional 10/100 Mbps devices - Also refactor the conditional to use the existing tg3_pci_tbl array. - Set flags in the driver_data field of the pci_device_id structure to identify these devices. - Add PCI_DEVICE_SUB() to pci.h to declare PCI 4-part IDs to match these devices. Signed-off-by: Nithin Nayak Sujir Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- include/linux/pci.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index ee2179546c63..9cbd6705d033 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -603,6 +603,20 @@ struct pci_driver { .vendor = (vend), .device = (dev), \ .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID +/** + * PCI_DEVICE_SUB - macro used to describe a specific pci device with subsystem + * @vend: the 16 bit PCI Vendor ID + * @dev: the 16 bit PCI Device ID + * @subvend: the 16 bit PCI Subvendor ID + * @subdev: the 16 bit PCI Subdevice ID + * + * This macro is used to create a struct pci_device_id that matches a + * specific device with subsystem information. + */ +#define PCI_DEVICE_SUB(vend, dev, subvend, subdev) \ + .vendor = (vend), .device = (dev), \ + .subvendor = (subvend), .subdevice = (subdev) + /** * PCI_DEVICE_CLASS - macro used to describe a specific pci device class * @dev_class: the class, subclass, prog-if triple for this device -- cgit v1.2.3 From 549985ee9c723fea8fd7759b5046fb8249896d50 Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Wed, 14 Nov 2012 09:07:56 +0000 Subject: cpsw: simplify the setup of the register pointers Instead of having a host of different register offsets in the device tree, this patch simplifies the CPSW code by letting the driver set the proper register offsets automatically, based on the CPSW version. Signed-off-by: Richard Cochran Signed-off-by: Mugunthan V N Signed-off-by: David S. Miller --- include/linux/platform_data/cpsw.h | 21 +-------------------- 1 file changed, 1 insertion(+), 20 deletions(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/cpsw.h b/include/linux/platform_data/cpsw.h index b5c16c3df458..24368a2e8b87 100644 --- a/include/linux/platform_data/cpsw.h +++ b/include/linux/platform_data/cpsw.h @@ -18,9 +18,7 @@ #include struct cpsw_slave_data { - u32 slave_reg_ofs; - u32 sliver_reg_ofs; - const char *phy_id; + char phy_id[MII_BUS_ID_SIZE]; int phy_if; u8 mac_addr[ETH_ALEN]; }; @@ -28,31 +26,14 @@ struct cpsw_slave_data { struct cpsw_platform_data { u32 ss_reg_ofs; /* Subsystem control register offset */ u32 channels; /* number of cpdma channels (symmetric) */ - u32 cpdma_reg_ofs; /* cpdma register offset */ - u32 cpdma_sram_ofs; /* cpdma sram offset */ - u32 slaves; /* number of slave cpgmac ports */ struct cpsw_slave_data *slave_data; u32 cpts_active_slave; /* time stamping slave */ u32 cpts_clock_mult; /* convert input clock ticks to nanoseconds */ u32 cpts_clock_shift; /* convert input clock ticks to nanoseconds */ - - u32 ale_reg_ofs; /* address lookup engine reg offset */ u32 ale_entries; /* ale table size */ - - u32 host_port_reg_ofs; /* cpsw cpdma host port registers */ - u32 host_port_num; /* The port number for the host port */ - - u32 hw_stats_reg_ofs; /* cpsw hardware statistics counters */ - u32 cpts_reg_ofs; /* cpts registers */ - - u32 bd_ram_ofs; /* embedded buffer descriptor RAM offset*/ u32 bd_ram_size; /*buffer descriptor ram size */ - u32 hw_ram_addr; /*if the HW address for BD RAM is different */ - bool no_bd_ram; /* no embedded BD ram*/ - u32 rx_descs; /* Number of Rx Descriptios */ - u32 mac_control; /* Mac control register */ }; -- cgit v1.2.3 From 64e481603ab46bcd1466fdaffca50f25bf123f83 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Thu, 18 Oct 2012 19:36:09 +0530 Subject: mfd: tps6586x: move regulator dt parsing to regulator driver Moving regulator node parsing to regulator driver in place of parsing it on mfd driver. The motivation for this change are: - MFD core driver should not depends on regulator and able to instantiate device without regulator. - The API for matching regulators are in regulator core and it is good that regulator driver only calls this API. - Regulator specific support should be in regulator driver only to ease any enhancement/modification for regulators. - The regulator driver is now registered as mfd sub device and all regulator registration is done from single probe call. Signed-off-by: Laxman Dewangan Signed-off-by: Mark Brown --- include/linux/mfd/tps6586x.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/tps6586x.h b/include/linux/mfd/tps6586x.h index 2dd123194958..f8da0e152567 100644 --- a/include/linux/mfd/tps6586x.h +++ b/include/linux/mfd/tps6586x.h @@ -29,6 +29,7 @@ enum { TPS6586X_ID_LDO_8, TPS6586X_ID_LDO_9, TPS6586X_ID_LDO_RTC, + TPS6586X_ID_MAX_REGULATOR, }; enum { @@ -79,6 +80,8 @@ struct tps6586x_platform_data { int gpio_base; int irq_base; bool pm_off; + + struct regulator_init_data *reg_init_data[TPS6586X_ID_MAX_REGULATOR]; }; /* -- cgit v1.2.3 From f6130be652d0b4fbf710d83a816298c007e59ed1 Mon Sep 17 00:00:00 2001 From: Ashish Jangam Date: Thu, 1 Nov 2012 13:57:56 +0530 Subject: regulator: DA9055 regulator driver This is the Regulator patch for the DA9055 PMIC and has got dependency on the DA9055 MFD core. This patch support all of the DA9055 regulators. The output voltages are fully programmable through I2C interface only. The platform data with regulation constraints is passed down from the board to the regulator. This patch is functionaly tested on SMDK6410 board. DA9055 Evaluation board was connected to the SMDK6410 board. Signed-off-by: David Dajun Chen Signed-off-by: Ashish Jangam Signed-off-by: Mark Brown --- include/linux/mfd/da9055/pdata.h | 27 ++++++++++++++++++++++++--- 1 file changed, 24 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/da9055/pdata.h b/include/linux/mfd/da9055/pdata.h index 147293b4471d..f87a6c172a91 100644 --- a/include/linux/mfd/da9055/pdata.h +++ b/include/linux/mfd/da9055/pdata.h @@ -25,8 +25,29 @@ struct da9055_pdata { int gpio_base; struct regulator_init_data *regulators[DA9055_MAX_REGULATORS]; - bool reset_enable; /* Enable RTC in RESET Mode */ - enum gpio_select *gpio_rsel; /* Select regulator set thru GPIO 1/2 */ - enum gpio_select *gpio_ren; /* Enable regulator thru GPIO 1/2 */ + /* Enable RTC in RESET Mode */ + bool reset_enable; + /* + * GPI muxed pin to control + * regulator state A/B, 0 if not available. + */ + int *gpio_ren; + /* + * GPI muxed pin to control + * regulator set, 0 if not available. + */ + int *gpio_rsel; + /* + * Regulator mode control bits value (GPI offset) that + * that controls the regulator state, 0 if not available. + */ + enum gpio_select *reg_ren; + /* + * Regulator mode control bits value (GPI offset) that + * controls the regulator set A/B, 0 if not available. + */ + enum gpio_select *reg_rsel; + /* GPIOs to enable regulator, 0 if not available */ + int *ena_gpio; }; #endif /* __DA9055_PDATA_H */ -- cgit v1.2.3 From 37cf6e6fc34e2fca4e7c565697e7cd5c317bc316 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Wed, 14 Nov 2012 16:59:13 +0100 Subject: HID: export hidinput_calc_abs_res Exporting the function allows us to calculate the resolution in third party drivers like hid-multitouch. This patch also complete the function with additional valid axes. Signed-off-by: Benjamin Tissoires Acked-by: Jiri Kosina Signed-off-by: Jiri Kosina --- include/linux/hid.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/hid.h b/include/linux/hid.h index c076041a069e..c6bef8f54a82 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -706,6 +706,7 @@ int hid_input_report(struct hid_device *, int type, u8 *, int, int); int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field); struct hid_field *hidinput_get_led_field(struct hid_device *hid); unsigned int hidinput_count_leds(struct hid_device *hid); +__s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code); void hid_output_report(struct hid_report *report, __u8 *data); struct hid_device *hid_allocate_device(void); struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id); -- cgit v1.2.3 From 774638386826621c984ab6994439f474709cac5e Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Wed, 14 Nov 2012 16:59:15 +0100 Subject: HID: fix unit exponent parsing HID spec details special values for the HID field unit exponent. Basically, the range [0x8..0xf] correspond to [-8..-1], so this is a standard two's complement on a half-byte. Signed-off-by: Benjamin Tissoires Acked-by: Jiri Kosina Signed-off-by: Jiri Kosina --- include/linux/hid.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/hid.h b/include/linux/hid.h index c6bef8f54a82..4161bf2c0b5b 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -717,6 +717,7 @@ int hid_connect(struct hid_device *hid, unsigned int connect_mask); void hid_disconnect(struct hid_device *hid); const struct hid_device_id *hid_match_id(struct hid_device *hdev, const struct hid_device_id *id); +s32 hid_snto32(__u32 value, unsigned n); /** * hid_map_usage - map usage input bits -- cgit v1.2.3 From f262d1fa2c651a5e2f92b6aee8779597631cd5d4 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Wed, 14 Nov 2012 16:59:16 +0100 Subject: HID: add usage_index in struct hid_usage. Currently, there is no way to know the index of the current field in the .input_mapping and .event callbacks when this field is inside an array of HID fields. This patch adds this index to the struct hid_usage so that this information is available to input_mapping and event callbacks. Signed-off-by: Benjamin Tissoires Acked-by: Jiri Kosina Signed-off-by: Jiri Kosina --- include/linux/hid.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/hid.h b/include/linux/hid.h index 4161bf2c0b5b..d2c42dd222c1 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -342,6 +342,7 @@ struct hid_collection { struct hid_usage { unsigned hid; /* hid usage code */ unsigned collection_index; /* index into collection array */ + unsigned usage_index; /* index into usage array */ /* hidinput data */ __u16 code; /* input driver code */ __u8 type; /* input driver type */ -- cgit v1.2.3 From 29807d1e24b7cd696442d2f600057230f084b3c7 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Wed, 14 Nov 2012 16:59:22 +0100 Subject: Input: mt: add input_mt_is_used This patch extracts the test (slot->frame == mt->frame) so that it can be used in third party drivers. Signed-off-by: Benjamin Tissoires Reviewed-by: Henrik Rydberg Signed-off-by: Jiri Kosina --- include/linux/input/mt.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h index cc5cca774bab..2e86bd0bfba1 100644 --- a/include/linux/input/mt.h +++ b/include/linux/input/mt.h @@ -69,6 +69,12 @@ static inline bool input_mt_is_active(const struct input_mt_slot *slot) return input_mt_get_value(slot, ABS_MT_TRACKING_ID) >= 0; } +static inline bool input_mt_is_used(const struct input_mt *mt, + const struct input_mt_slot *slot) +{ + return slot->frame == mt->frame; +} + int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots, unsigned int flags); void input_mt_destroy_slots(struct input_dev *dev); -- cgit v1.2.3 From 5133375bb46a0d6c3fba07097caed7aa5e629ccd Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 15 Nov 2012 13:15:37 +0100 Subject: ACPI / PM: Fix build problem when CONFIG_ACPI or CONFIG_PM is not set Commit e5cc8ef (ACPI / PM: Provide ACPI PM callback routines for subsystems) introduced a build problem occuring if CONFIG_ACPI is unset or CONFIG_PM is unset and errno.h is not included before acpi.h, because in that case ENODEV used in acpi.h is undefined. Fix the issue by making acpi.h include errno.h. Signed-off-by: Rafael J. Wysocki --- include/linux/acpi.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 0676b6ac57fa..5fdd87271518 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -25,6 +25,7 @@ #ifndef _LINUX_ACPI_H #define _LINUX_ACPI_H +#include #include /* for struct resource */ #ifdef CONFIG_ACPI -- cgit v1.2.3 From 621eb19ce1ec216e03ad354cb0c4061736b2a436 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Wed, 14 Nov 2012 10:48:05 -0500 Subject: svcrpc: Revert "sunrpc/cache.h: replace simple_strtoul" Commit bbf43dc888833ac0539e437dbaeb28bfd4fbab9f "sunrpc/cache.h: replace simple_strtoul" introduced new range-checking which could cause get_int to fail on unsigned integers too large to be represented as an int. We could parse them as unsigned instead--but it turns out svcgssd is actually passing down "-1" in some cases. Which is perhaps stupid, but there's nothing we can do about it now. So just revert back to the previous "sloppy" behavior that accepts either representation. Cc: stable@vger.kernel.org Reported-by: Sven Geggus Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/cache.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h index f792794f6634..5dc9ee4d616e 100644 --- a/include/linux/sunrpc/cache.h +++ b/include/linux/sunrpc/cache.h @@ -217,6 +217,8 @@ extern int qword_get(char **bpp, char *dest, int bufsize); static inline int get_int(char **bpp, int *anint) { char buf[50]; + char *ep; + int rv; int len = qword_get(bpp, buf, sizeof(buf)); if (len < 0) @@ -224,9 +226,11 @@ static inline int get_int(char **bpp, int *anint) if (len == 0) return -ENOENT; - if (kstrtoint(buf, 0, anint)) + rv = simple_strtol(buf, &ep, 0); + if (*ep) return -EINVAL; + *anint = rv; return 0; } -- cgit v1.2.3 From aa1acb0451bb27add173d9641d0b74c58889e693 Mon Sep 17 00:00:00 2001 From: "hongbo.zhang" Date: Thu, 15 Nov 2012 18:56:42 +0800 Subject: Thermal: Add ST-Ericsson DB8500 thermal driver. This driver is based on the thermal management framework in thermal_sys.c. A thermal zone device is created with the trip points to which cooling devices can be bound, the current cooling device is cpufreq, e.g. CPU frequency is clipped down to cool the CPU, and other cooling devices can be added and bound to the trip points dynamically. The platform specific PRCMU interrupts are used to active thermal update when trip points are reached. Signed-off-by: hongbo.zhang Reviewed-by: Viresh Kumar Reviewed-by: Francesco Lavra Signed-off-by: Zhang Rui --- include/linux/platform_data/db8500_thermal.h | 38 ++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 include/linux/platform_data/db8500_thermal.h (limited to 'include/linux') diff --git a/include/linux/platform_data/db8500_thermal.h b/include/linux/platform_data/db8500_thermal.h new file mode 100644 index 000000000000..3bf60902e902 --- /dev/null +++ b/include/linux/platform_data/db8500_thermal.h @@ -0,0 +1,38 @@ +/* + * db8500_thermal.h - DB8500 Thermal Management Implementation + * + * Copyright (C) 2012 ST-Ericsson + * Copyright (C) 2012 Linaro Ltd. + * + * Author: Hongbo Zhang + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _DB8500_THERMAL_H_ +#define _DB8500_THERMAL_H_ + +#include + +#define COOLING_DEV_MAX 8 + +struct db8500_trip_point { + unsigned long temp; + enum thermal_trip_type type; + char cdev_name[COOLING_DEV_MAX][THERMAL_NAME_LENGTH]; +}; + +struct db8500_thsens_platform_data { + struct db8500_trip_point trip_points[THERMAL_MAX_TRIPS]; + int num_trips; +}; + +#endif /* _DB8500_THERMAL_H_ */ -- cgit v1.2.3 From fc05d5a30dc19dd4c6d161e551719a8c597c7890 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 4 Oct 2012 09:28:49 +0200 Subject: mtd: delete nomadik_nand driver The nomadik_nand driver is really just a subset of the FSMC NAND driver, and there are no users anymore so let's delete it. Signed-off-by: Linus Walleij Acked-by: Jean-Christophe PLAGNIOL-VILLARD Signed-off-by: Artem Bityutskiy --- include/linux/platform_data/mtd-nomadik-nand.h | 16 ---------------- 1 file changed, 16 deletions(-) delete mode 100644 include/linux/platform_data/mtd-nomadik-nand.h (limited to 'include/linux') diff --git a/include/linux/platform_data/mtd-nomadik-nand.h b/include/linux/platform_data/mtd-nomadik-nand.h deleted file mode 100644 index c3c8254c22a5..000000000000 --- a/include/linux/platform_data/mtd-nomadik-nand.h +++ /dev/null @@ -1,16 +0,0 @@ -#ifndef __ASM_ARCH_NAND_H -#define __ASM_ARCH_NAND_H - -struct nomadik_nand_platform_data { - struct mtd_partition *parts; - int nparts; - int options; - int (*init) (void); - int (*exit) (void); -}; - -#define NAND_IO_DATA 0x40000000 -#define NAND_IO_CMD 0x40800000 -#define NAND_IO_ADDR 0x41000000 - -#endif /* __ASM_ARCH_NAND_H */ -- cgit v1.2.3 From 6d7b42a447f92eb3e7e410bbf62042693eb040f7 Mon Sep 17 00:00:00 2001 From: Jean-Christophe PLAGNIOL-VILLARD Date: Thu, 4 Oct 2012 15:14:16 +0200 Subject: mtd: fsmc_nand: pass the ale and cmd resource via resource Do not use the platform_data to pass resource and be smart in the drivers. Just pass it via resource Switch to devm_request_and_ioremap at the sametime Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD Acked-by: Linus Walleij Reviewed-By: Vipin Kumar Signed-off-by: Artem Bityutskiy --- include/linux/mtd/fsmc.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/fsmc.h b/include/linux/mtd/fsmc.h index b20029221fb1..d6ed61ef451d 100644 --- a/include/linux/mtd/fsmc.h +++ b/include/linux/mtd/fsmc.h @@ -155,9 +155,6 @@ struct fsmc_nand_platform_data { unsigned int width; unsigned int bank; - /* CLE, ALE offsets */ - unsigned int cle_off; - unsigned int ale_off; enum access_mode mode; void (*select_bank)(uint32_t bank, uint32_t busw); -- cgit v1.2.3 From 2f25ae97fe4b424d88d765797c46456c7c0f1bae Mon Sep 17 00:00:00 2001 From: Vipin Kumar Date: Tue, 9 Oct 2012 16:14:53 +0530 Subject: mtd: nand: Increase the ecc placement locations to 640 Few devices like H27UBG8T2CTR have a writesize/oobsize of 8KB/640B. This means that the maximum oobsize has gone up to 640 bytes and consequently the maximum ecc placement locations have also gone up to 640. Signed-off-by: Vipin Kumar Signed-off-by: Artem Bityutskiy --- include/linux/mtd/mtd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 81d61e704599..f9ac2897b86b 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -98,7 +98,7 @@ struct mtd_oob_ops { }; #define MTD_MAX_OOBFREE_ENTRIES_LARGE 32 -#define MTD_MAX_ECCPOS_ENTRIES_LARGE 448 +#define MTD_MAX_ECCPOS_ENTRIES_LARGE 640 /* * Internal ECC layout control structure. For historical reasons, there is a * similar, smaller struct nand_ecclayout_user (in mtd-abi.h) that is retained -- cgit v1.2.3 From 5de0b52ea8f8f5149502867acff2efb5efaf1fc2 Mon Sep 17 00:00:00 2001 From: Huang Shijie Date: Sat, 13 Oct 2012 13:03:29 -0400 Subject: mtd: gpmi: remove unneccessary header The whole gpmi-nand driver has turned to pure devicetree supported. So the linux/mtd/gpmi-nand.h is not neccessary now. Just remove it, and move some macros to the gpmi-nand driver itself. Signed-off-by: Huang Shijie Signed-off-by: Artem Bityutskiy --- include/linux/mtd/gpmi-nand.h | 68 ------------------------------------------- 1 file changed, 68 deletions(-) delete mode 100644 include/linux/mtd/gpmi-nand.h (limited to 'include/linux') diff --git a/include/linux/mtd/gpmi-nand.h b/include/linux/mtd/gpmi-nand.h deleted file mode 100644 index ed3c4e09f3d1..000000000000 --- a/include/linux/mtd/gpmi-nand.h +++ /dev/null @@ -1,68 +0,0 @@ -/* - * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#ifndef __MACH_MXS_GPMI_NAND_H__ -#define __MACH_MXS_GPMI_NAND_H__ - -/* The size of the resources is fixed. */ -#define GPMI_NAND_RES_SIZE 6 - -/* Resource names for the GPMI NAND driver. */ -#define GPMI_NAND_GPMI_REGS_ADDR_RES_NAME "gpmi-nand" -#define GPMI_NAND_GPMI_INTERRUPT_RES_NAME "GPMI NAND GPMI Interrupt" -#define GPMI_NAND_BCH_REGS_ADDR_RES_NAME "bch" -#define GPMI_NAND_BCH_INTERRUPT_RES_NAME "bch" -#define GPMI_NAND_DMA_CHANNELS_RES_NAME "GPMI NAND DMA Channels" -#define GPMI_NAND_DMA_INTERRUPT_RES_NAME "gpmi-dma" - -/** - * struct gpmi_nand_platform_data - GPMI NAND driver platform data. - * - * This structure communicates platform-specific information to the GPMI NAND - * driver that can't be expressed as resources. - * - * @platform_init: A pointer to a function the driver will call to - * initialize the platform (e.g., set up the pin mux). - * @min_prop_delay_in_ns: Minimum propagation delay of GPMI signals to and - * from the NAND Flash device, in nanoseconds. - * @max_prop_delay_in_ns: Maximum propagation delay of GPMI signals to and - * from the NAND Flash device, in nanoseconds. - * @max_chip_count: The maximum number of chips for which the driver - * should configure the hardware. This value most - * likely reflects the number of pins that are - * connected to a NAND Flash device. If this is - * greater than the SoC hardware can support, the - * driver will print a message and fail to initialize. - * @partitions: An optional pointer to an array of partition - * descriptions. - * @partition_count: The number of elements in the partitions array. - */ -struct gpmi_nand_platform_data { - /* SoC hardware information. */ - int (*platform_init)(void); - - /* NAND Flash information. */ - unsigned int min_prop_delay_in_ns; - unsigned int max_prop_delay_in_ns; - unsigned int max_chip_count; - - /* Medium information. */ - struct mtd_partition *partitions; - unsigned partition_count; -}; -#endif -- cgit v1.2.3 From e8a9d8f31c592eea89f1b0d3fd425e7a96944e88 Mon Sep 17 00:00:00 2001 From: Bastian Hecht Date: Fri, 19 Oct 2012 12:15:34 +0200 Subject: mtd: sh_flctl: Minor cleanups Some small fixes to avoid sparse and smatch complain. Other cosmetic fixes as well. - Change of the type of the member index in struct sh_flctl from signed to unsigned. We use index by addressing array members, so unsigned is more concise here. Adapt functions relying on sh_flctl::index. - Remove a blurring cast in write_fiforeg(). - Apply consistent naming scheme when refering to the data buffer. - Shorten some unnecessarily verbose functions. - Remove spaces at start of lines. Signed-off-by: Bastian Hecht Signed-off-by: Artem Bityutskiy --- include/linux/mtd/sh_flctl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mtd/sh_flctl.h b/include/linux/mtd/sh_flctl.h index 01e4b15b280e..481557688d05 100644 --- a/include/linux/mtd/sh_flctl.h +++ b/include/linux/mtd/sh_flctl.h @@ -147,7 +147,7 @@ struct sh_flctl { uint8_t done_buff[2048 + 64]; /* max size 2048 + 64 */ int read_bytes; - int index; + unsigned int index; int seqin_column; /* column in SEQIN cmd */ int seqin_page_addr; /* page_addr in SEQIN cmd */ uint32_t seqin_read_cmd; /* read cmd in SEQIN cmd */ -- cgit v1.2.3 From 83738d87e3a0a4096e1419a65b8228130d183df6 Mon Sep 17 00:00:00 2001 From: Bastian Hecht Date: Fri, 19 Oct 2012 12:15:35 +0200 Subject: mtd: sh_flctl: Add DMA capabilty The code probes if DMA channels can get allocated and tears them down at removal/failure if needed. If available it uses them to transfer the data part (not ECC). On failure we fall back to PIO mode. Based on Guennadi Liakhovetski's code from the sh_mmcif driver. Signed-off-by: Bastian Hecht Reviewed-by: Guennadi Liakhovetski Signed-off-by: Artem Bityutskiy --- include/linux/mtd/sh_flctl.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/sh_flctl.h b/include/linux/mtd/sh_flctl.h index 481557688d05..1c28f8879b1c 100644 --- a/include/linux/mtd/sh_flctl.h +++ b/include/linux/mtd/sh_flctl.h @@ -20,6 +20,7 @@ #ifndef __SH_FLCTL_H__ #define __SH_FLCTL_H__ +#include #include #include #include @@ -107,6 +108,7 @@ #define ESTERINTE (0x1 << 24) /* ECC error interrupt enable */ #define AC1CLR (0x1 << 19) /* ECC FIFO clear */ #define AC0CLR (0x1 << 18) /* Data FIFO clear */ +#define DREQ0EN (0x1 << 16) /* FLDTFIFODMA Request Enable */ #define ECERB (0x1 << 9) /* ECC error */ #define STERB (0x1 << 8) /* Status error */ #define STERINTE (0x1 << 4) /* Status error enable */ @@ -138,6 +140,8 @@ enum flctl_ecc_res_t { FL_TIMEOUT }; +struct dma_chan; + struct sh_flctl { struct mtd_info mtd; struct nand_chip chip; @@ -161,6 +165,11 @@ struct sh_flctl { unsigned hwecc:1; /* Hardware ECC (0 = disabled, 1 = enabled) */ unsigned holden:1; /* Hardware has FLHOLDCR and HOLDEN is set */ unsigned qos_request:1; /* QoS request to prevent deep power shutdown */ + + /* DMA related objects */ + struct dma_chan *chan_fifo0_rx; + struct dma_chan *chan_fifo0_tx; + struct completion dma_complete; }; struct sh_flctl_platform_data { @@ -170,6 +179,9 @@ struct sh_flctl_platform_data { unsigned has_hwecc:1; unsigned use_holden:1; + + unsigned int slave_id_fifo0_tx; + unsigned int slave_id_fifo0_rx; }; static inline struct sh_flctl *mtd_to_flctl(struct mtd_info *mtdinfo) -- cgit v1.2.3 From 9ef525a9141b14d23613faad303cf48a20814f1b Mon Sep 17 00:00:00 2001 From: "Robert P. J. Day" Date: Thu, 25 Oct 2012 09:43:10 -0400 Subject: mtd: Fix kernel-doc content to avoid warning. Add missing colons to fix kernel-doc generation warnings. Signed-off-by: Robert P. J. Day Signed-off-by: Artem Bityutskiy --- include/linux/mtd/nand.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 24e915957e4f..9d8a6048aacd 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -471,8 +471,8 @@ struct nand_buffers { * non 0 if ONFI supported. * @onfi_params: [INTERN] holds the ONFI page parameter when ONFI is * supported, 0 otherwise. - * @onfi_set_features [REPLACEABLE] set the features for ONFI nand - * @onfi_get_features [REPLACEABLE] get the features for ONFI nand + * @onfi_set_features: [REPLACEABLE] set the features for ONFI nand + * @onfi_get_features: [REPLACEABLE] get the features for ONFI nand * @ecclayout: [REPLACEABLE] the default ECC placement scheme * @bbt: [INTERN] bad block table pointer * @bbt_td: [REPLACEABLE] bad block table descriptor for flash -- cgit v1.2.3 From 3e9ce49e0ef95e22790a74720f0068696b2477c9 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Mon, 29 Oct 2012 22:47:26 +0530 Subject: mtd: map: Fix compilation warning This patch is an attempt to fix following compilation warning. In file included from drivers/mtd/chips/cfi_cmdset_0001.c:35:0: drivers/mtd/chips/cfi_cmdset_0001.c: In function 'cfi_intelext_write_words': include/linux/mtd/map.h:331:11: warning: 'r.x[0]' may be used uninitialized in this function [-Wmaybe-uninitialized] I could have used uninitialized_var() too, but didn't used it as the final else part of map_word_load() is missing. So there is a chance that it might be passed uninitialized. Better initialize to zero. Signed-off-by: Viresh Kumar Signed-off-by: Artem Bityutskiy --- include/linux/mtd/map.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h index 3595a0236b0f..56c7936e0c65 100644 --- a/include/linux/mtd/map.h +++ b/include/linux/mtd/map.h @@ -328,7 +328,7 @@ static inline int map_word_bitsset(struct map_info *map, map_word val1, map_word static inline map_word map_word_load(struct map_info *map, const void *ptr) { - map_word r; + map_word r = {{0} }; if (map_bankwidth_is_1(map)) r.x[0] = *(unsigned char *)ptr; -- cgit v1.2.3 From 93532c8a4890871aa0d84dd91b80dad9f58542e0 Mon Sep 17 00:00:00 2001 From: Igor Mazanov Date: Thu, 15 Nov 2012 21:07:00 +0400 Subject: clk: remove inline usage from clk-provider.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Users of GCC 4.7 have reported compiler errors due to having inline applied to function declarations in clk-provider.h. The definitions exist in drivers/clk/clk.c. An example error: In file included from arch/arm/mach-omap2/clockdomain.c:25:0: arch/arm/mach-omap2/clockdomain.c: In function ‘clkdm_clk_disable’: include/linux/clk-provider.h:338:12: error: inlining failed in call to always_inline ‘__clk_get_enable_count’: function body not available arch/arm/mach-omap2/clockdomain.c:1001:28: error: called from here make[1]: *** [arch/arm/mach-omap2/clockdomain.o] Error 1 make: *** [arch/arm/mach-omap2] Error 2 This patch removes the use of inline from include/linux/clk-provider.h but keeps the function definitions in drivers/clk/clk.c as inlined since they are one-liners. Signed-off-by: Igor Mazanov Acked-by: Paul Walmsley Signed-off-by: Mike Turquette [mturquette@linaro.org: improved subject, added changelog] --- include/linux/clk-provider.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index c12731582920..f9f5e9eeb9dd 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -335,8 +335,8 @@ const char *__clk_get_name(struct clk *clk); struct clk_hw *__clk_get_hw(struct clk *clk); u8 __clk_get_num_parents(struct clk *clk); struct clk *__clk_get_parent(struct clk *clk); -inline int __clk_get_enable_count(struct clk *clk); -inline int __clk_get_prepare_count(struct clk *clk); +int __clk_get_enable_count(struct clk *clk); +int __clk_get_prepare_count(struct clk *clk); unsigned long __clk_get_rate(struct clk *clk); unsigned long __clk_get_flags(struct clk *clk); int __clk_is_enabled(struct clk *clk); -- cgit v1.2.3 From 62532da9d5f47a7ced3b965aa73ffd5b1afbeb79 Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Thu, 15 Nov 2012 08:49:10 +0000 Subject: net: Add generic packet offload infrastructure. Create a new data structure to contain the GRO/GSO callbacks and add a new registration mechanism. Singed-off-by: Vlad Yasevich Signed-off-by: David S. Miller --- include/linux/netdevice.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 7bf867c97043..d45a58db4ba3 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1521,6 +1521,17 @@ struct packet_type { struct list_head list; }; +struct packet_offload { + __be16 type; /* This is really htons(ether_type). */ + struct sk_buff *(*gso_segment)(struct sk_buff *skb, + netdev_features_t features); + int (*gso_send_check)(struct sk_buff *skb); + struct sk_buff **(*gro_receive)(struct sk_buff **head, + struct sk_buff *skb); + int (*gro_complete)(struct sk_buff *skb); + struct list_head list; +}; + #include /* netdevice notifier chain. Please remember to update the rtnetlink @@ -1615,6 +1626,9 @@ extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short extern void dev_add_pack(struct packet_type *pt); extern void dev_remove_pack(struct packet_type *pt); extern void __dev_remove_pack(struct packet_type *pt); +extern void dev_add_offload(struct packet_offload *po); +extern void dev_remove_offload(struct packet_offload *po); +extern void __dev_remove_offload(struct packet_offload *po); extern struct net_device *dev_get_by_flags_rcu(struct net *net, unsigned short flags, unsigned short mask); -- cgit v1.2.3 From 22061d8014455b01eb018bd6c35a1b3040ccc230 Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Thu, 15 Nov 2012 08:49:11 +0000 Subject: net: Switch to using the new packet offload infrustructure Convert to using the new GSO/GRO registration mechanism and new packet offload structure. Signed-off-by: Vlad Yasevich Signed-off-by: David S. Miller --- include/linux/netdevice.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index d45a58db4ba3..61bc8483031f 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1509,12 +1509,6 @@ struct packet_type { struct net_device *, struct packet_type *, struct net_device *); - struct sk_buff *(*gso_segment)(struct sk_buff *skb, - netdev_features_t features); - int (*gso_send_check)(struct sk_buff *skb); - struct sk_buff **(*gro_receive)(struct sk_buff **head, - struct sk_buff *skb); - int (*gro_complete)(struct sk_buff *skb); bool (*id_match)(struct packet_type *ptype, struct sock *sk); void *af_packet_priv; -- cgit v1.2.3 From f191a1d17f227032c159e5499809f545402b6dc6 Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Thu, 15 Nov 2012 08:49:23 +0000 Subject: net: Remove code duplication between offload structures Move the offload callbacks into its own structure. Signed-off-by: Vlad Yasevich Signed-off-by: David S. Miller --- include/linux/netdevice.h | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 61bc8483031f..e46c830c88d8 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1515,15 +1515,19 @@ struct packet_type { struct list_head list; }; -struct packet_offload { - __be16 type; /* This is really htons(ether_type). */ +struct offload_callbacks { struct sk_buff *(*gso_segment)(struct sk_buff *skb, netdev_features_t features); int (*gso_send_check)(struct sk_buff *skb); struct sk_buff **(*gro_receive)(struct sk_buff **head, struct sk_buff *skb); int (*gro_complete)(struct sk_buff *skb); - struct list_head list; +}; + +struct packet_offload { + __be16 type; /* This is really htons(ether_type). */ + struct offload_callbacks callbacks; + struct list_head list; }; #include -- cgit v1.2.3 From 997071bcb34005f42e0fe5bc7930e895b070f251 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Thu, 15 Nov 2012 14:34:42 -0800 Subject: mm: export a function to get vm committed memory It will be useful to be able to access global memory commitment from device drivers. On the Hyper-V platform, the host has a policy engine to balance the available physical memory amongst all competing virtual machines hosted on a given node. This policy engine is driven by a number of metrics including the memory commitment reported by the guests. The balloon driver for Linux on Hyper-V will use this function to retrieve guest memory commitment. This function is also used in Xen self ballooning code. [akpm@linux-foundation.org: coding-style tweak] Signed-off-by: K. Y. Srinivasan Acked-by: David Rientjes Acked-by: Dan Magenheimer Cc: Konrad Rzeszutek Wilk Cc: Jeremy Fitzhardinge Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- include/linux/mman.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mman.h b/include/linux/mman.h index d09dde1e57fb..9aa863da287f 100644 --- a/include/linux/mman.h +++ b/include/linux/mman.h @@ -11,6 +11,8 @@ extern int sysctl_overcommit_memory; extern int sysctl_overcommit_ratio; extern struct percpu_counter vm_committed_as; +unsigned long vm_memory_committed(void); + static inline void vm_acct_memory(long pages) { percpu_counter_add(&vm_committed_as, pages); -- cgit v1.2.3 From de274bfe0fc81def6ddb8a17020a9a4b56477cc4 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 15 Nov 2012 09:49:54 +0100 Subject: TTY: introduce tty_port_destroy After commit "TTY: move tty buffers to tty_port", the tty buffers are not freed in some drivers. This is because tty_port_destructor is not called whenever a tty_port is freed. This was an assumption I counted with but was unfortunately untrue. Those using refcounting are safe now, but for those which do not we introduce a function to be called right before the tty_port is freed by the drivers. Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index d7ff88fb8967..8db1b569c37a 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -455,6 +455,7 @@ extern struct device *tty_port_register_device_attr(struct tty_port *port, const struct attribute_group **attr_grp); extern int tty_port_alloc_xmit_buf(struct tty_port *port); extern void tty_port_free_xmit_buf(struct tty_port *port); +extern void tty_port_destroy(struct tty_port *port); extern void tty_port_put(struct tty_port *port); static inline struct tty_port *tty_port_get(struct tty_port *port) -- cgit v1.2.3 From 67d16a4686c9b94c8f52a66afe7521909aeb75b4 Mon Sep 17 00:00:00 2001 From: Wei WANG Date: Fri, 9 Nov 2012 20:53:33 +0800 Subject: drivers/mfd: Add realtek pcie card reader driver Realtek PCI-E card reader driver adapts requests from upper-level sdmmc/memstick layer to the real physical card reader. Signed-off-by: Wei WANG Reviewed-by: Arnd Bergmann Tested-by: Borislav Petkov Signed-off-by: Greg Kroah-Hartman --- include/linux/mfd/rtsx_common.h | 48 +++ include/linux/mfd/rtsx_pci.h | 794 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 842 insertions(+) create mode 100644 include/linux/mfd/rtsx_common.h create mode 100644 include/linux/mfd/rtsx_pci.h (limited to 'include/linux') diff --git a/include/linux/mfd/rtsx_common.h b/include/linux/mfd/rtsx_common.h new file mode 100644 index 000000000000..a8d393e3066b --- /dev/null +++ b/include/linux/mfd/rtsx_common.h @@ -0,0 +1,48 @@ +/* Driver for Realtek driver-based card reader + * + * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + * + * Author: + * Wei WANG + * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China + */ + +#ifndef __RTSX_COMMON_H +#define __RTSX_COMMON_H + +#define DRV_NAME_RTSX_PCI "rtsx_pci" +#define DRV_NAME_RTSX_PCI_SDMMC "rtsx_pci_sdmmc" +#define DRV_NAME_RTSX_PCI_MS "rtsx_pci_ms" + +#define RTSX_REG_PAIR(addr, val) (((u32)(addr) << 16) | (u8)(val)) + +#define RTSX_SSC_DEPTH_4M 0x01 +#define RTSX_SSC_DEPTH_2M 0x02 +#define RTSX_SSC_DEPTH_1M 0x03 +#define RTSX_SSC_DEPTH_500K 0x04 +#define RTSX_SSC_DEPTH_250K 0x05 + +#define RTSX_SD_CARD 0 +#define RTSX_MS_CARD 1 + +struct platform_device; + +struct rtsx_slot { + struct platform_device *p_dev; + void (*card_event)(struct platform_device *p_dev); +}; + +#endif diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h new file mode 100644 index 000000000000..060b721fcbfb --- /dev/null +++ b/include/linux/mfd/rtsx_pci.h @@ -0,0 +1,794 @@ +/* Driver for Realtek PCI-Express card reader + * + * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + * + * Author: + * Wei WANG + * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China + */ + +#ifndef __RTSX_PCI_H +#define __RTSX_PCI_H + +#include +#include + +#include "rtsx_common.h" + +#define MAX_RW_REG_CNT 1024 + +/* PCI Operation Register Address */ +#define RTSX_HCBAR 0x00 +#define RTSX_HCBCTLR 0x04 +#define RTSX_HDBAR 0x08 +#define RTSX_HDBCTLR 0x0C +#define RTSX_HAIMR 0x10 +#define RTSX_BIPR 0x14 +#define RTSX_BIER 0x18 + +/* Host command buffer control register */ +#define STOP_CMD (0x01 << 28) + +/* Host data buffer control register */ +#define SDMA_MODE 0x00 +#define ADMA_MODE (0x02 << 26) +#define STOP_DMA (0x01 << 28) +#define TRIG_DMA (0x01 << 31) + +/* Host access internal memory register */ +#define HAIMR_TRANS_START (0x01 << 31) +#define HAIMR_READ 0x00 +#define HAIMR_WRITE (0x01 << 30) +#define HAIMR_READ_START (HAIMR_TRANS_START | HAIMR_READ) +#define HAIMR_WRITE_START (HAIMR_TRANS_START | HAIMR_WRITE) +#define HAIMR_TRANS_END (HAIMR_TRANS_START) + +/* Bus interrupt pending register */ +#define CMD_DONE_INT (1 << 31) +#define DATA_DONE_INT (1 << 30) +#define TRANS_OK_INT (1 << 29) +#define TRANS_FAIL_INT (1 << 28) +#define XD_INT (1 << 27) +#define MS_INT (1 << 26) +#define SD_INT (1 << 25) +#define GPIO0_INT (1 << 24) +#define OC_INT (1 << 23) +#define SD_WRITE_PROTECT (1 << 19) +#define XD_EXIST (1 << 18) +#define MS_EXIST (1 << 17) +#define SD_EXIST (1 << 16) +#define DELINK_INT GPIO0_INT +#define MS_OC_INT (1 << 23) +#define SD_OC_INT (1 << 22) + +#define CARD_INT (XD_INT | MS_INT | SD_INT) +#define NEED_COMPLETE_INT (DATA_DONE_INT | TRANS_OK_INT | TRANS_FAIL_INT) +#define RTSX_INT (CMD_DONE_INT | NEED_COMPLETE_INT | \ + CARD_INT | GPIO0_INT | OC_INT) + +#define CARD_EXIST (XD_EXIST | MS_EXIST | SD_EXIST) + +/* Bus interrupt enable register */ +#define CMD_DONE_INT_EN (1 << 31) +#define DATA_DONE_INT_EN (1 << 30) +#define TRANS_OK_INT_EN (1 << 29) +#define TRANS_FAIL_INT_EN (1 << 28) +#define XD_INT_EN (1 << 27) +#define MS_INT_EN (1 << 26) +#define SD_INT_EN (1 << 25) +#define GPIO0_INT_EN (1 << 24) +#define OC_INT_EN (1 << 23) +#define DELINK_INT_EN GPIO0_INT_EN +#define MS_OC_INT_EN (1 << 23) +#define SD_OC_INT_EN (1 << 22) + +#define READ_REG_CMD 0 +#define WRITE_REG_CMD 1 +#define CHECK_REG_CMD 2 + +/* + * macros for easy use + */ +#define rtsx_pci_writel(pcr, reg, value) \ + iowrite32(value, (pcr)->remap_addr + reg) +#define rtsx_pci_readl(pcr, reg) \ + ioread32((pcr)->remap_addr + reg) +#define rtsx_pci_writew(pcr, reg, value) \ + iowrite16(value, (pcr)->remap_addr + reg) +#define rtsx_pci_readw(pcr, reg) \ + ioread16((pcr)->remap_addr + reg) +#define rtsx_pci_writeb(pcr, reg, value) \ + iowrite8(value, (pcr)->remap_addr + reg) +#define rtsx_pci_readb(pcr, reg) \ + ioread8((pcr)->remap_addr + reg) + +#define rtsx_pci_read_config_byte(pcr, where, val) \ + pci_read_config_byte((pcr)->pci, where, val) + +#define rtsx_pci_write_config_byte(pcr, where, val) \ + pci_write_config_byte((pcr)->pci, where, val) + +#define rtsx_pci_read_config_dword(pcr, where, val) \ + pci_read_config_dword((pcr)->pci, where, val) + +#define rtsx_pci_write_config_dword(pcr, where, val) \ + pci_write_config_dword((pcr)->pci, where, val) + +#define STATE_TRANS_NONE 0 +#define STATE_TRANS_CMD 1 +#define STATE_TRANS_BUF 2 +#define STATE_TRANS_SG 3 + +#define TRANS_NOT_READY 0 +#define TRANS_RESULT_OK 1 +#define TRANS_RESULT_FAIL 2 +#define TRANS_NO_DEVICE 3 + +#define RTSX_RESV_BUF_LEN 4096 +#define HOST_CMDS_BUF_LEN 1024 +#define HOST_SG_TBL_BUF_LEN (RTSX_RESV_BUF_LEN - HOST_CMDS_BUF_LEN) +#define HOST_SG_TBL_ITEMS (HOST_SG_TBL_BUF_LEN / 8) +#define MAX_SG_ITEM_LEN 0x80000 + +#define HOST_TO_DEVICE 0 +#define DEVICE_TO_HOST 1 + +#define MAX_PHASE 31 +#define RX_TUNING_CNT 3 + +/* SG descriptor */ +#define SG_INT 0x04 +#define SG_END 0x02 +#define SG_VALID 0x01 + +#define SG_NO_OP 0x00 +#define SG_TRANS_DATA (0x02 << 4) +#define SG_LINK_DESC (0x03 << 4) + +/* SD bank voltage */ +#define SD_IO_3V3 0 +#define SD_IO_1V8 1 + + +/* Card Clock Enable Register */ +#define SD_CLK_EN 0x04 +#define MS_CLK_EN 0x08 + +/* Card Select Register */ +#define SD_MOD_SEL 2 +#define MS_MOD_SEL 3 + +/* Card Output Enable Register */ +#define SD_OUTPUT_EN 0x04 +#define MS_OUTPUT_EN 0x08 + +/* CARD_SHARE_MODE */ +#define CARD_SHARE_MASK 0x0F +#define CARD_SHARE_MULTI_LUN 0x00 +#define CARD_SHARE_NORMAL 0x00 +#define CARD_SHARE_48_SD 0x04 +#define CARD_SHARE_48_MS 0x08 +/* CARD_SHARE_MODE for barossa */ +#define CARD_SHARE_BAROSSA_SD 0x01 +#define CARD_SHARE_BAROSSA_MS 0x02 + +/* SD30_DRIVE_SEL */ +#define DRIVER_TYPE_A 0x05 +#define DRIVER_TYPE_B 0x03 +#define DRIVER_TYPE_C 0x02 +#define DRIVER_TYPE_D 0x01 + +/* FPDCTL */ +#define SSC_POWER_DOWN 0x01 +#define SD_OC_POWER_DOWN 0x02 +#define ALL_POWER_DOWN 0x07 +#define OC_POWER_DOWN 0x06 + +/* CLK_CTL */ +#define CHANGE_CLK 0x01 + +/* LDO_CTL */ +#define BPP_LDO_POWB 0x03 +#define BPP_LDO_ON 0x00 +#define BPP_LDO_SUSPEND 0x02 +#define BPP_LDO_OFF 0x03 + +/* CD_PAD_CTL */ +#define CD_DISABLE_MASK 0x07 +#define MS_CD_DISABLE 0x04 +#define SD_CD_DISABLE 0x02 +#define XD_CD_DISABLE 0x01 +#define CD_DISABLE 0x07 +#define CD_ENABLE 0x00 +#define MS_CD_EN_ONLY 0x03 +#define SD_CD_EN_ONLY 0x05 +#define XD_CD_EN_ONLY 0x06 +#define FORCE_CD_LOW_MASK 0x38 +#define FORCE_CD_XD_LOW 0x08 +#define FORCE_CD_SD_LOW 0x10 +#define FORCE_CD_MS_LOW 0x20 +#define CD_AUTO_DISABLE 0x40 + +/* SD_STAT1 */ +#define SD_CRC7_ERR 0x80 +#define SD_CRC16_ERR 0x40 +#define SD_CRC_WRITE_ERR 0x20 +#define SD_CRC_WRITE_ERR_MASK 0x1C +#define GET_CRC_TIME_OUT 0x02 +#define SD_TUNING_COMPARE_ERR 0x01 + +/* SD_STAT2 */ +#define SD_RSP_80CLK_TIMEOUT 0x01 + +/* SD_BUS_STAT */ +#define SD_CLK_TOGGLE_EN 0x80 +#define SD_CLK_FORCE_STOP 0x40 +#define SD_DAT3_STATUS 0x10 +#define SD_DAT2_STATUS 0x08 +#define SD_DAT1_STATUS 0x04 +#define SD_DAT0_STATUS 0x02 +#define SD_CMD_STATUS 0x01 + +/* SD_PAD_CTL */ +#define SD_IO_USING_1V8 0x80 +#define SD_IO_USING_3V3 0x7F +#define TYPE_A_DRIVING 0x00 +#define TYPE_B_DRIVING 0x01 +#define TYPE_C_DRIVING 0x02 +#define TYPE_D_DRIVING 0x03 + +/* SD_SAMPLE_POINT_CTL */ +#define DDR_FIX_RX_DAT 0x00 +#define DDR_VAR_RX_DAT 0x80 +#define DDR_FIX_RX_DAT_EDGE 0x00 +#define DDR_FIX_RX_DAT_14_DELAY 0x40 +#define DDR_FIX_RX_CMD 0x00 +#define DDR_VAR_RX_CMD 0x20 +#define DDR_FIX_RX_CMD_POS_EDGE 0x00 +#define DDR_FIX_RX_CMD_14_DELAY 0x10 +#define SD20_RX_POS_EDGE 0x00 +#define SD20_RX_14_DELAY 0x08 +#define SD20_RX_SEL_MASK 0x08 + +/* SD_PUSH_POINT_CTL */ +#define DDR_FIX_TX_CMD_DAT 0x00 +#define DDR_VAR_TX_CMD_DAT 0x80 +#define DDR_FIX_TX_DAT_14_TSU 0x00 +#define DDR_FIX_TX_DAT_12_TSU 0x40 +#define DDR_FIX_TX_CMD_NEG_EDGE 0x00 +#define DDR_FIX_TX_CMD_14_AHEAD 0x20 +#define SD20_TX_NEG_EDGE 0x00 +#define SD20_TX_14_AHEAD 0x10 +#define SD20_TX_SEL_MASK 0x10 +#define DDR_VAR_SDCLK_POL_SWAP 0x01 + +/* SD_TRANSFER */ +#define SD_TRANSFER_START 0x80 +#define SD_TRANSFER_END 0x40 +#define SD_STAT_IDLE 0x20 +#define SD_TRANSFER_ERR 0x10 +/* SD Transfer Mode definition */ +#define SD_TM_NORMAL_WRITE 0x00 +#define SD_TM_AUTO_WRITE_3 0x01 +#define SD_TM_AUTO_WRITE_4 0x02 +#define SD_TM_AUTO_READ_3 0x05 +#define SD_TM_AUTO_READ_4 0x06 +#define SD_TM_CMD_RSP 0x08 +#define SD_TM_AUTO_WRITE_1 0x09 +#define SD_TM_AUTO_WRITE_2 0x0A +#define SD_TM_NORMAL_READ 0x0C +#define SD_TM_AUTO_READ_1 0x0D +#define SD_TM_AUTO_READ_2 0x0E +#define SD_TM_AUTO_TUNING 0x0F + +/* SD_VPTX_CTL / SD_VPRX_CTL */ +#define PHASE_CHANGE 0x80 +#define PHASE_NOT_RESET 0x40 + +/* SD_DCMPS_TX_CTL / SD_DCMPS_RX_CTL */ +#define DCMPS_CHANGE 0x80 +#define DCMPS_CHANGE_DONE 0x40 +#define DCMPS_ERROR 0x20 +#define DCMPS_CURRENT_PHASE 0x1F + +/* SD Configure 1 Register */ +#define SD_CLK_DIVIDE_0 0x00 +#define SD_CLK_DIVIDE_256 0xC0 +#define SD_CLK_DIVIDE_128 0x80 +#define SD_BUS_WIDTH_1BIT 0x00 +#define SD_BUS_WIDTH_4BIT 0x01 +#define SD_BUS_WIDTH_8BIT 0x02 +#define SD_ASYNC_FIFO_NOT_RST 0x10 +#define SD_20_MODE 0x00 +#define SD_DDR_MODE 0x04 +#define SD_30_MODE 0x08 + +#define SD_CLK_DIVIDE_MASK 0xC0 + +/* SD_CMD_STATE */ +#define SD_CMD_IDLE 0x80 + +/* SD_DATA_STATE */ +#define SD_DATA_IDLE 0x80 + +/* DCM_DRP_CTL */ +#define DCM_RESET 0x08 +#define DCM_LOCKED 0x04 +#define DCM_208M 0x00 +#define DCM_TX 0x01 +#define DCM_RX 0x02 + +/* DCM_DRP_TRIG */ +#define DRP_START 0x80 +#define DRP_DONE 0x40 + +/* DCM_DRP_CFG */ +#define DRP_WRITE 0x80 +#define DRP_READ 0x00 +#define DCM_WRITE_ADDRESS_50 0x50 +#define DCM_WRITE_ADDRESS_51 0x51 +#define DCM_READ_ADDRESS_00 0x00 +#define DCM_READ_ADDRESS_51 0x51 + +/* IRQSTAT0 */ +#define DMA_DONE_INT 0x80 +#define SUSPEND_INT 0x40 +#define LINK_RDY_INT 0x20 +#define LINK_DOWN_INT 0x10 + +/* DMACTL */ +#define DMA_RST 0x80 +#define DMA_BUSY 0x04 +#define DMA_DIR_TO_CARD 0x00 +#define DMA_DIR_FROM_CARD 0x02 +#define DMA_EN 0x01 +#define DMA_128 (0 << 4) +#define DMA_256 (1 << 4) +#define DMA_512 (2 << 4) +#define DMA_1024 (3 << 4) +#define DMA_PACK_SIZE_MASK 0x30 + +/* SSC_CTL1 */ +#define SSC_RSTB 0x80 +#define SSC_8X_EN 0x40 +#define SSC_FIX_FRAC 0x20 +#define SSC_SEL_1M 0x00 +#define SSC_SEL_2M 0x08 +#define SSC_SEL_4M 0x10 +#define SSC_SEL_8M 0x18 + +/* SSC_CTL2 */ +#define SSC_DEPTH_MASK 0x07 +#define SSC_DEPTH_DISALBE 0x00 +#define SSC_DEPTH_4M 0x01 +#define SSC_DEPTH_2M 0x02 +#define SSC_DEPTH_1M 0x03 +#define SSC_DEPTH_500K 0x04 +#define SSC_DEPTH_250K 0x05 + +/* System Clock Control Register */ +#define CLK_LOW_FREQ 0x01 + +/* System Clock Divider Register */ +#define CLK_DIV_1 0x01 +#define CLK_DIV_2 0x02 +#define CLK_DIV_4 0x03 +#define CLK_DIV_8 0x04 + +/* MS_CFG */ +#define SAMPLE_TIME_RISING 0x00 +#define SAMPLE_TIME_FALLING 0x80 +#define PUSH_TIME_DEFAULT 0x00 +#define PUSH_TIME_ODD 0x40 +#define NO_EXTEND_TOGGLE 0x00 +#define EXTEND_TOGGLE_CHK 0x20 +#define MS_BUS_WIDTH_1 0x00 +#define MS_BUS_WIDTH_4 0x10 +#define MS_BUS_WIDTH_8 0x18 +#define MS_2K_SECTOR_MODE 0x04 +#define MS_512_SECTOR_MODE 0x00 +#define MS_TOGGLE_TIMEOUT_EN 0x00 +#define MS_TOGGLE_TIMEOUT_DISEN 0x01 +#define MS_NO_CHECK_INT 0x02 + +/* MS_TRANS_CFG */ +#define WAIT_INT 0x80 +#define NO_WAIT_INT 0x00 +#define NO_AUTO_READ_INT_REG 0x00 +#define AUTO_READ_INT_REG 0x40 +#define MS_CRC16_ERR 0x20 +#define MS_RDY_TIMEOUT 0x10 +#define MS_INT_CMDNK 0x08 +#define MS_INT_BREQ 0x04 +#define MS_INT_ERR 0x02 +#define MS_INT_CED 0x01 + +/* MS_TRANSFER */ +#define MS_TRANSFER_START 0x80 +#define MS_TRANSFER_END 0x40 +#define MS_TRANSFER_ERR 0x20 +#define MS_BS_STATE 0x10 +#define MS_TM_READ_BYTES 0x00 +#define MS_TM_NORMAL_READ 0x01 +#define MS_TM_WRITE_BYTES 0x04 +#define MS_TM_NORMAL_WRITE 0x05 +#define MS_TM_AUTO_READ 0x08 +#define MS_TM_AUTO_WRITE 0x0C + +/* SD Configure 2 Register */ +#define SD_CALCULATE_CRC7 0x00 +#define SD_NO_CALCULATE_CRC7 0x80 +#define SD_CHECK_CRC16 0x00 +#define SD_NO_CHECK_CRC16 0x40 +#define SD_NO_CHECK_WAIT_CRC_TO 0x20 +#define SD_WAIT_BUSY_END 0x08 +#define SD_NO_WAIT_BUSY_END 0x00 +#define SD_CHECK_CRC7 0x00 +#define SD_NO_CHECK_CRC7 0x04 +#define SD_RSP_LEN_0 0x00 +#define SD_RSP_LEN_6 0x01 +#define SD_RSP_LEN_17 0x02 +/* SD/MMC Response Type Definition */ +#define SD_RSP_TYPE_R0 0x04 +#define SD_RSP_TYPE_R1 0x01 +#define SD_RSP_TYPE_R1b 0x09 +#define SD_RSP_TYPE_R2 0x02 +#define SD_RSP_TYPE_R3 0x05 +#define SD_RSP_TYPE_R4 0x05 +#define SD_RSP_TYPE_R5 0x01 +#define SD_RSP_TYPE_R6 0x01 +#define SD_RSP_TYPE_R7 0x01 + +/* SD_CONFIURE3 */ +#define SD_RSP_80CLK_TIMEOUT_EN 0x01 + +/* Card Transfer Reset Register */ +#define SPI_STOP 0x01 +#define XD_STOP 0x02 +#define SD_STOP 0x04 +#define MS_STOP 0x08 +#define SPI_CLR_ERR 0x10 +#define XD_CLR_ERR 0x20 +#define SD_CLR_ERR 0x40 +#define MS_CLR_ERR 0x80 + +/* Card Data Source Register */ +#define PINGPONG_BUFFER 0x01 +#define RING_BUFFER 0x00 + +/* Card Power Control Register */ +#define PMOS_STRG_MASK 0x10 +#define PMOS_STRG_800mA 0x10 +#define PMOS_STRG_400mA 0x00 +#define SD_POWER_OFF 0x03 +#define SD_PARTIAL_POWER_ON 0x01 +#define SD_POWER_ON 0x00 +#define SD_POWER_MASK 0x03 +#define MS_POWER_OFF 0x0C +#define MS_PARTIAL_POWER_ON 0x04 +#define MS_POWER_ON 0x00 +#define MS_POWER_MASK 0x0C +#define BPP_POWER_OFF 0x0F +#define BPP_POWER_5_PERCENT_ON 0x0E +#define BPP_POWER_10_PERCENT_ON 0x0C +#define BPP_POWER_15_PERCENT_ON 0x08 +#define BPP_POWER_ON 0x00 +#define BPP_POWER_MASK 0x0F + +/* PWR_GATE_CTRL */ +#define PWR_GATE_EN 0x01 +#define LDO3318_PWR_MASK 0x06 +#define LDO_ON 0x00 +#define LDO_SUSPEND 0x04 +#define LDO_OFF 0x06 + +/* CARD_CLK_SOURCE */ +#define CRC_FIX_CLK (0x00 << 0) +#define CRC_VAR_CLK0 (0x01 << 0) +#define CRC_VAR_CLK1 (0x02 << 0) +#define SD30_FIX_CLK (0x00 << 2) +#define SD30_VAR_CLK0 (0x01 << 2) +#define SD30_VAR_CLK1 (0x02 << 2) +#define SAMPLE_FIX_CLK (0x00 << 4) +#define SAMPLE_VAR_CLK0 (0x01 << 4) +#define SAMPLE_VAR_CLK1 (0x02 << 4) + +#define MS_CFG 0xFD40 +#define MS_TPC 0xFD41 +#define MS_TRANS_CFG 0xFD42 +#define MS_TRANSFER 0xFD43 +#define MS_INT_REG 0xFD44 +#define MS_BYTE_CNT 0xFD45 +#define MS_SECTOR_CNT_L 0xFD46 +#define MS_SECTOR_CNT_H 0xFD47 +#define MS_DBUS_H 0xFD48 + +#define SD_CFG1 0xFDA0 +#define SD_CFG2 0xFDA1 +#define SD_CFG3 0xFDA2 +#define SD_STAT1 0xFDA3 +#define SD_STAT2 0xFDA4 +#define SD_BUS_STAT 0xFDA5 +#define SD_PAD_CTL 0xFDA6 +#define SD_SAMPLE_POINT_CTL 0xFDA7 +#define SD_PUSH_POINT_CTL 0xFDA8 +#define SD_CMD0 0xFDA9 +#define SD_CMD1 0xFDAA +#define SD_CMD2 0xFDAB +#define SD_CMD3 0xFDAC +#define SD_CMD4 0xFDAD +#define SD_CMD5 0xFDAE +#define SD_BYTE_CNT_L 0xFDAF +#define SD_BYTE_CNT_H 0xFDB0 +#define SD_BLOCK_CNT_L 0xFDB1 +#define SD_BLOCK_CNT_H 0xFDB2 +#define SD_TRANSFER 0xFDB3 +#define SD_CMD_STATE 0xFDB5 +#define SD_DATA_STATE 0xFDB6 + +#define SRCTL 0xFC13 + +#define DCM_DRP_CTL 0xFC23 +#define DCM_DRP_TRIG 0xFC24 +#define DCM_DRP_CFG 0xFC25 +#define DCM_DRP_WR_DATA_L 0xFC26 +#define DCM_DRP_WR_DATA_H 0xFC27 +#define DCM_DRP_RD_DATA_L 0xFC28 +#define DCM_DRP_RD_DATA_H 0xFC29 +#define SD_VPCLK0_CTL 0xFC2A +#define SD_VPCLK1_CTL 0xFC2B +#define SD_DCMPS0_CTL 0xFC2C +#define SD_DCMPS1_CTL 0xFC2D +#define SD_VPTX_CTL SD_VPCLK0_CTL +#define SD_VPRX_CTL SD_VPCLK1_CTL +#define SD_DCMPS_TX_CTL SD_DCMPS0_CTL +#define SD_DCMPS_RX_CTL SD_DCMPS1_CTL +#define CARD_CLK_SOURCE 0xFC2E + +#define CARD_PWR_CTL 0xFD50 +#define CARD_CLK_SWITCH 0xFD51 +#define CARD_SHARE_MODE 0xFD52 +#define CARD_DRIVE_SEL 0xFD53 +#define CARD_STOP 0xFD54 +#define CARD_OE 0xFD55 +#define CARD_AUTO_BLINK 0xFD56 +#define CARD_GPIO_DIR 0xFD57 +#define CARD_GPIO 0xFD58 +#define CARD_DATA_SOURCE 0xFD5B +#define CARD_SELECT 0xFD5C +#define SD30_DRIVE_SEL 0xFD5E +#define CARD_CLK_EN 0xFD69 +#define SDIO_CTRL 0xFD6B +#define CD_PAD_CTL 0xFD73 + +#define FPDCTL 0xFC00 +#define PDINFO 0xFC01 + +#define CLK_CTL 0xFC02 +#define CLK_DIV 0xFC03 +#define CLK_SEL 0xFC04 + +#define SSC_DIV_N_0 0xFC0F +#define SSC_DIV_N_1 0xFC10 +#define SSC_CTL1 0xFC11 +#define SSC_CTL2 0xFC12 + +#define RCCTL 0xFC14 + +#define FPGA_PULL_CTL 0xFC1D +#define OLT_LED_CTL 0xFC1E +#define GPIO_CTL 0xFC1F + +#define LDO_CTL 0xFC1E +#define SYS_VER 0xFC32 + +#define CARD_PULL_CTL1 0xFD60 +#define CARD_PULL_CTL2 0xFD61 +#define CARD_PULL_CTL3 0xFD62 +#define CARD_PULL_CTL4 0xFD63 +#define CARD_PULL_CTL5 0xFD64 +#define CARD_PULL_CTL6 0xFD65 + +/* PCI Express Related Registers */ +#define IRQEN0 0xFE20 +#define IRQSTAT0 0xFE21 +#define IRQEN1 0xFE22 +#define IRQSTAT1 0xFE23 +#define TLPRIEN 0xFE24 +#define TLPRISTAT 0xFE25 +#define TLPTIEN 0xFE26 +#define TLPTISTAT 0xFE27 +#define DMATC0 0xFE28 +#define DMATC1 0xFE29 +#define DMATC2 0xFE2A +#define DMATC3 0xFE2B +#define DMACTL 0xFE2C +#define BCTL 0xFE2D +#define RBBC0 0xFE2E +#define RBBC1 0xFE2F +#define RBDAT 0xFE30 +#define RBCTL 0xFE34 +#define CFGADDR0 0xFE35 +#define CFGADDR1 0xFE36 +#define CFGDATA0 0xFE37 +#define CFGDATA1 0xFE38 +#define CFGDATA2 0xFE39 +#define CFGDATA3 0xFE3A +#define CFGRWCTL 0xFE3B +#define PHYRWCTL 0xFE3C +#define PHYDATA0 0xFE3D +#define PHYDATA1 0xFE3E +#define PHYADDR 0xFE3F +#define MSGRXDATA0 0xFE40 +#define MSGRXDATA1 0xFE41 +#define MSGRXDATA2 0xFE42 +#define MSGRXDATA3 0xFE43 +#define MSGTXDATA0 0xFE44 +#define MSGTXDATA1 0xFE45 +#define MSGTXDATA2 0xFE46 +#define MSGTXDATA3 0xFE47 +#define MSGTXCTL 0xFE48 +#define PETXCFG 0xFE49 + +#define CDRESUMECTL 0xFE52 +#define WAKE_SEL_CTL 0xFE54 +#define PME_FORCE_CTL 0xFE56 +#define ASPM_FORCE_CTL 0xFE57 +#define PM_CLK_FORCE_CTL 0xFE58 +#define PERST_GLITCH_WIDTH 0xFE5C +#define CHANGE_LINK_STATE 0xFE5B +#define RESET_LOAD_REG 0xFE5E +#define EFUSE_CONTENT 0xFE5F +#define HOST_SLEEP_STATE 0xFE60 +#define SDIO_CFG 0xFE70 + +#define NFTS_TX_CTRL 0xFE72 + +#define PWR_GATE_CTRL 0xFE75 +#define PWD_SUSPEND_EN 0xFE76 +#define LDO_PWR_SEL 0xFE78 + +#define DUMMY_REG_RESET_0 0xFE90 + +/* Memory mapping */ +#define SRAM_BASE 0xE600 +#define RBUF_BASE 0xF400 +#define PPBUF_BASE1 0xF800 +#define PPBUF_BASE2 0xFA00 +#define IMAGE_FLAG_ADDR0 0xCE80 +#define IMAGE_FLAG_ADDR1 0xCE81 + +#define rtsx_pci_init_cmd(pcr) ((pcr)->ci = 0) + +struct rtsx_pcr; + +struct pcr_handle { + struct rtsx_pcr *pcr; +}; + +struct pcr_ops { + int (*extra_init_hw)(struct rtsx_pcr *pcr); + int (*optimize_phy)(struct rtsx_pcr *pcr); + int (*turn_on_led)(struct rtsx_pcr *pcr); + int (*turn_off_led)(struct rtsx_pcr *pcr); + int (*enable_auto_blink)(struct rtsx_pcr *pcr); + int (*disable_auto_blink)(struct rtsx_pcr *pcr); + int (*card_power_on)(struct rtsx_pcr *pcr, int card); + int (*card_power_off)(struct rtsx_pcr *pcr, int card); + unsigned int (*cd_deglitch)(struct rtsx_pcr *pcr); +}; + +enum PDEV_STAT {PDEV_STAT_IDLE, PDEV_STAT_RUN}; + +struct rtsx_pcr { + struct pci_dev *pci; + unsigned int id; + + /* pci resources */ + unsigned long addr; + void __iomem *remap_addr; + int irq; + + /* host reserved buffer */ + void *rtsx_resv_buf; + dma_addr_t rtsx_resv_buf_addr; + + void *host_cmds_ptr; + dma_addr_t host_cmds_addr; + int ci; + + void *host_sg_tbl_ptr; + dma_addr_t host_sg_tbl_addr; + int sgi; + + u32 bier; + char trans_result; + + unsigned int card_inserted; + unsigned int card_removed; + + struct delayed_work carddet_work; + struct delayed_work idle_work; + + spinlock_t lock; + struct mutex pcr_mutex; + struct completion *done; + struct completion *finish_me; + + unsigned int cur_clock; + bool ms_pmos; + bool remove_pci; + bool msi_en; + +#define EXTRA_CAPS_SD_SDR50 (1 << 0) +#define EXTRA_CAPS_SD_SDR104 (1 << 1) +#define EXTRA_CAPS_SD_DDR50 (1 << 2) +#define EXTRA_CAPS_MMC_HSDDR (1 << 3) +#define EXTRA_CAPS_MMC_HS200 (1 << 4) +#define EXTRA_CAPS_MMC_8BIT (1 << 5) + u32 extra_caps; + +#define IC_VER_A 0 +#define IC_VER_B 1 +#define IC_VER_C 2 +#define IC_VER_D 3 + u8 ic_version; + + const u32 *sd_pull_ctl_enable_tbl; + const u32 *sd_pull_ctl_disable_tbl; + const u32 *ms_pull_ctl_enable_tbl; + const u32 *ms_pull_ctl_disable_tbl; + + const struct pcr_ops *ops; + enum PDEV_STAT state; + + int num_slots; + struct rtsx_slot *slots; +}; + +#define CHK_PCI_PID(pcr, pid) ((pcr)->pci->device == (pid)) +#define PCI_VID(pcr) ((pcr)->pci->vendor) +#define PCI_PID(pcr) ((pcr)->pci->device) + +void rtsx_pci_start_run(struct rtsx_pcr *pcr); +int rtsx_pci_write_register(struct rtsx_pcr *pcr, u16 addr, u8 mask, u8 data); +int rtsx_pci_read_register(struct rtsx_pcr *pcr, u16 addr, u8 *data); +int rtsx_pci_write_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 val); +int rtsx_pci_read_phy_register(struct rtsx_pcr *pcr, u8 addr, u16 *val); +void rtsx_pci_stop_cmd(struct rtsx_pcr *pcr); +void rtsx_pci_add_cmd(struct rtsx_pcr *pcr, + u8 cmd_type, u16 reg_addr, u8 mask, u8 data); +void rtsx_pci_send_cmd_no_wait(struct rtsx_pcr *pcr); +int rtsx_pci_send_cmd(struct rtsx_pcr *pcr, int timeout); +int rtsx_pci_transfer_data(struct rtsx_pcr *pcr, struct scatterlist *sglist, + int num_sg, bool read, int timeout); +int rtsx_pci_read_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len); +int rtsx_pci_write_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len); +int rtsx_pci_card_pull_ctl_enable(struct rtsx_pcr *pcr, int card); +int rtsx_pci_card_pull_ctl_disable(struct rtsx_pcr *pcr, int card); +int rtsx_pci_switch_clock(struct rtsx_pcr *pcr, unsigned int card_clock, + u8 ssc_depth, bool initial_mode, bool double_clk, bool vpclk); +int rtsx_pci_card_power_on(struct rtsx_pcr *pcr, int card); +int rtsx_pci_card_power_off(struct rtsx_pcr *pcr, int card); +unsigned int rtsx_pci_card_exist(struct rtsx_pcr *pcr); +void rtsx_pci_complete_unfinished_transfer(struct rtsx_pcr *pcr); + +static inline u8 *rtsx_pci_get_cmd_data(struct rtsx_pcr *pcr) +{ + return (u8 *)(pcr->host_cmds_ptr); +} + +#endif -- cgit v1.2.3 From ac96511bb5cf92bad97ffc2249f75e45eb70301d Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Fri, 9 Nov 2012 09:44:44 +0800 Subject: usb: phy: change phy notify connect/disconnect API The old parameter "port" is useless for phy notify, as one usb phy is only for one usb port. New parameter "speed" stands for the device's speed which is on the port, this "speed" parameter is needed at some platforms which will do some phy operations according to device's speed. Signed-off-by: Peter Chen Tested-by: Mike Thompson Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/phy.h | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h index 06b5bae35b29..a29ae1eb9346 100644 --- a/include/linux/usb/phy.h +++ b/include/linux/usb/phy.h @@ -10,6 +10,7 @@ #define __LINUX_USB_PHY_H #include +#include enum usb_phy_events { USB_EVENT_NONE, /* no events or cable disconnected */ @@ -99,8 +100,10 @@ struct usb_phy { int suspend); /* notify phy connect status change */ - int (*notify_connect)(struct usb_phy *x, int port); - int (*notify_disconnect)(struct usb_phy *x, int port); + int (*notify_connect)(struct usb_phy *x, + enum usb_device_speed speed); + int (*notify_disconnect)(struct usb_phy *x, + enum usb_device_speed speed); }; @@ -189,19 +192,19 @@ usb_phy_set_suspend(struct usb_phy *x, int suspend) } static inline int -usb_phy_notify_connect(struct usb_phy *x, int port) +usb_phy_notify_connect(struct usb_phy *x, enum usb_device_speed speed) { if (x->notify_connect) - return x->notify_connect(x, port); + return x->notify_connect(x, speed); else return 0; } static inline int -usb_phy_notify_disconnect(struct usb_phy *x, int port) +usb_phy_notify_disconnect(struct usb_phy *x, enum usb_device_speed speed) { if (x->notify_disconnect) - return x->notify_disconnect(x, port); + return x->notify_disconnect(x, speed); else return 0; } -- cgit v1.2.3 From ebd5ac165f2aaefb767c53112c2010b0ff3df688 Mon Sep 17 00:00:00 2001 From: Shinya Kuribayashi Date: Wed, 24 Oct 2012 19:58:10 +0900 Subject: i2c: i2c-sh_mobile: support I2C hardware block with a faster operating clock On newer SH-/R-Mobile SoCs, a clock supply to the I2C hardware block, which is used to generate the SCL clock output, is getting faster than before, while on the other hand, the SCL clock control registers, ICCH and ICCL, stay unchanged in 9-bit-wide (8+1). On such silicons, the internal SCL clock counter gets incremented every 2 clocks of the operating clock. This patch makes it configurable through platform data. Signed-off-by: Shinya Kuribayashi Signed-off-by: Wolfram Sang --- include/linux/i2c/i2c-sh_mobile.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/i2c/i2c-sh_mobile.h b/include/linux/i2c/i2c-sh_mobile.h index beda7081aead..06e3089795fb 100644 --- a/include/linux/i2c/i2c-sh_mobile.h +++ b/include/linux/i2c/i2c-sh_mobile.h @@ -5,6 +5,7 @@ struct i2c_sh_mobile_platform_data { unsigned long bus_speed; + unsigned int clks_per_count; }; #endif /* __I2C_SH_MOBILE_H__ */ -- cgit v1.2.3 From d611d41b46c96195b9a168a21992782458826e07 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 6 Nov 2012 22:55:27 +0100 Subject: mtd: diskonchip: use inline functions for DocRead/DocWrite The diskonchip drivers traditionally use home-grown macros for doing MMIO accesses, which cause a lot of warnings, at least on ARM machines: drivers/mtd/devices/doc2000.c: In function 'doc_write': drivers/mtd/devices/doc2000.c:854:5: warning: value computed is not used [-Wunused-value] drivers/mtd/devices/doc2000.c: In function 'doc_erase': drivers/mtd/devices/doc2000.c:1123:5: warning: value computed is not used [-Wunused-value drivers/mtd/nand/diskonchip.c: In function 'doc2000_read_byte': drivers/mtd/nand/diskonchip.c:318:3: warning: value computed is not used [-Wunused-value] A nicer solution is to use the architecture-defined I/O accessors. Here, we use the __raw_readl/__raw_writel style, instead of the proper readl/writel ones, in order to preserve the odd semantics of the existing macros that have their own barrier implementation and no byte swap. It would be nice to fix this properly and use the correct accessors as well as make the word size independent from the architecture, but I guess the hardware is obsolete enough that we should better not mess the driver an more than necessary. Signed-off-by: Arnd Bergmann Signed-off-by: Artem Bityutskiy --- include/linux/mtd/doc2000.h | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/doc2000.h b/include/linux/mtd/doc2000.h index 0f6fea73a1f6..407d1e556c39 100644 --- a/include/linux/mtd/doc2000.h +++ b/include/linux/mtd/doc2000.h @@ -92,12 +92,26 @@ * Others use readb/writeb */ #if defined(__arm__) -#define ReadDOC_(adr, reg) ((unsigned char)(*(volatile __u32 *)(((unsigned long)adr)+((reg)<<2)))) -#define WriteDOC_(d, adr, reg) do{ *(volatile __u32 *)(((unsigned long)adr)+((reg)<<2)) = (__u32)d; wmb();} while(0) +static inline u8 ReadDOC_(u32 __iomem *addr, unsigned long reg) +{ + return __raw_readl(addr + reg); +} +static inline void WriteDOC_(u8 data, u32 __iomem *addr, unsigned long reg) +{ + __raw_writel(data, addr + reg); + wmb(); +} #define DOC_IOREMAP_LEN 0x8000 #elif defined(__ppc__) -#define ReadDOC_(adr, reg) ((unsigned char)(*(volatile __u16 *)(((unsigned long)adr)+((reg)<<1)))) -#define WriteDOC_(d, adr, reg) do{ *(volatile __u16 *)(((unsigned long)adr)+((reg)<<1)) = (__u16)d; wmb();} while(0) +static inline u8 ReadDOC_(u16 __iomem *addr, unsigned long reg) +{ + return __raw_readw(addr + reg); +} +static inline void WriteDOC_(u8 data, u16 __iomem *addr, unsigned long reg) +{ + __raw_writew(data, addr + reg); + wmb(); +} #define DOC_IOREMAP_LEN 0x4000 #else #define ReadDOC_(adr, reg) readb((void __iomem *)(adr) + (reg)) -- cgit v1.2.3 From 5d27aa5af04f58f3020de1c224dcf8a62151fd58 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 6 Nov 2012 22:55:28 +0100 Subject: mtd: uninitialized variable warning in map.h The map_word_load() function initializes exactly as many words in the buffer as required, but gcc cannot figure this out and gives a misleading warning. Marking the local variable as uninitialized_var shuts up that warning. Without this patch, building acs5k_defconfig results in: drivers/mtd/chips/cfi_cmdset_0002.c: In function 'cfi_amdstd_panic_write': include/linux/mtd/map.h:331:11: warning: 'r.x[0]' may be used uninitialized in this function [-Wuninitialized] drivers/mtd/chips/cfi_cmdset_0002.c: In function 'cfi_amdstd_write_words': include/linux/mtd/map.h:331:11: warning: 'r.x[0]' may be used uninitialized in this function [-Wuninitialized] drivers/mtd/chips/cfi_cmdset_0001.c: In function 'cfi_intelext_write_words': include/linux/mtd/map.h:331:11: warning: 'r.x[0]' may be used uninitialized in this function [-Wuninitialized] Signed-off-by: Arnd Bergmann Signed-off-by: Artem Bityutskiy --- include/linux/mtd/map.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h index 56c7936e0c65..f6eb4332ac92 100644 --- a/include/linux/mtd/map.h +++ b/include/linux/mtd/map.h @@ -391,7 +391,7 @@ static inline map_word map_word_ff(struct map_info *map) static inline map_word inline_map_read(struct map_info *map, unsigned long ofs) { - map_word r; + map_word uninitialized_var(r); if (map_bankwidth_is_1(map)) r.x[0] = __raw_readb(map->virt + ofs); -- cgit v1.2.3 From 6920b5a791bbb54810159fbf6acf2c6ae14cdd22 Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 21 Sep 2012 10:18:58 +0100 Subject: ARM: move serial_sa1100.h header file to linux/platform_data This is really driver platform data, so move it to the appropriate directory. Acked-by: Greg Kroah-Hartman Signed-off-by: Russell King --- include/linux/platform_data/sa11x0-serial.h | 33 +++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 include/linux/platform_data/sa11x0-serial.h (limited to 'include/linux') diff --git a/include/linux/platform_data/sa11x0-serial.h b/include/linux/platform_data/sa11x0-serial.h new file mode 100644 index 000000000000..4504d5d592f0 --- /dev/null +++ b/include/linux/platform_data/sa11x0-serial.h @@ -0,0 +1,33 @@ +/* + * Author: Nicolas Pitre + * + * Moved and changed lots, Russell King + * + * Low level machine dependent UART functions. + */ +#ifndef SA11X0_SERIAL_H +#define SA11X0_SERIAL_H + +struct uart_port; +struct uart_info; + +/* + * This is a temporary structure for registering these + * functions; it is intended to be discarded after boot. + */ +struct sa1100_port_fns { + void (*set_mctrl)(struct uart_port *, u_int); + u_int (*get_mctrl)(struct uart_port *); + void (*pm)(struct uart_port *, u_int, u_int); + int (*set_wake)(struct uart_port *, u_int); +}; + +#ifdef CONFIG_SERIAL_SA1100 +void sa1100_register_uart_fns(struct sa1100_port_fns *fns); +void sa1100_register_uart(int idx, int port); +#else +#define sa1100_register_uart_fns(fns) do { } while (0) +#define sa1100_register_uart(idx,port) do { } while (0) +#endif + +#endif -- cgit v1.2.3 From 46000065a631c6d21452d533baf086175c384ba4 Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 21 Sep 2012 10:23:44 +0100 Subject: ARM: move udc_pxa2xx.h to linux/platform_data Move the PXA2xx/IXP4xx UDC header file into linux/platform_data as it only contains a driver platform data structure. Acked-by: Felipe Balbi Acked-by: Greg Kroah-Hartman Acked-by: Krzysztof Halasa Signed-off-by: Russell King --- include/linux/platform_data/pxa2xx_udc.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 include/linux/platform_data/pxa2xx_udc.h (limited to 'include/linux') diff --git a/include/linux/platform_data/pxa2xx_udc.h b/include/linux/platform_data/pxa2xx_udc.h new file mode 100644 index 000000000000..c6c5e98b5b82 --- /dev/null +++ b/include/linux/platform_data/pxa2xx_udc.h @@ -0,0 +1,27 @@ +/* + * This supports machine-specific differences in how the PXA2xx + * USB Device Controller (UDC) is wired. + * + * It is set in linux/arch/arm/mach-pxa/.c or in + * linux/arch/mach-ixp4xx/.c and used in + * the probe routine of linux/drivers/usb/gadget/pxa2xx_udc.c + */ +#ifndef PXA2XX_UDC_H +#define PXA2XX_UDC_H + +struct pxa2xx_udc_mach_info { + int (*udc_is_connected)(void); /* do we see host? */ + void (*udc_command)(int cmd); +#define PXA2XX_UDC_CMD_CONNECT 0 /* let host see us */ +#define PXA2XX_UDC_CMD_DISCONNECT 1 /* so host won't see us */ + + /* Boards following the design guidelines in the developer's manual, + * with on-chip GPIOs not Lubbock's weird hardware, can have a sane + * VBUS IRQ and omit the methods above. Store the GPIO number + * here. Note that sometimes the signals go through inverters... + */ + bool gpio_pullup_inverted; + int gpio_pullup; /* high == pullup activated */ +}; + +#endif -- cgit v1.2.3 From ed71871bed7198ca4aa6a79b7a93b73ad6408e98 Mon Sep 17 00:00:00 2001 From: Noam Camus Date: Fri, 16 Nov 2012 07:03:05 +0200 Subject: tty/8250_early: Turn serial_in/serial_out into weak symbols. Allows overriding default methods serial_in/serial_out. In such platform specific replacement it is possible to use other regshift, biased register offset, any other manipulation that is not covered with common default methods. Overriding default methods may be useful for platforms which got serial peripheral with registers represented in big endian. In this situation and assuming that 32 bit operations / alignment is required then it may be useful to swab words before/after accessing the serial registers. Signed-off-by: Noam Camus Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_8250.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h index c174c90fb3fb..c490d20b3fb8 100644 --- a/include/linux/serial_8250.h +++ b/include/linux/serial_8250.h @@ -105,6 +105,8 @@ extern int early_serial_setup(struct uart_port *port); extern int serial8250_find_port(struct uart_port *p); extern int serial8250_find_port_for_earlycon(void); +extern unsigned int serial8250_early_in(struct uart_port *port, int offset); +extern void serial8250_early_out(struct uart_port *port, int offset, int value); extern int setup_early_serial8250_console(char *cmdline); extern void serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios, struct ktermios *old); -- cgit v1.2.3 From 32cdba1e05418909708a17e52505e8b2ba4381d1 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Wed, 14 Nov 2012 19:03:42 +0100 Subject: uprobes: Use percpu_rw_semaphore to fix register/unregister vs dup_mmap() race This was always racy, but 268720903f87e0b84b161626c4447b81671b5d18 "uprobes: Rework register_for_each_vma() to make it O(n)" should be blamed anyway, it made everything worse and I didn't notice. register/unregister call build_map_info() and then do install/remove breakpoint for every mm which mmaps inode/offset. This can obviously race with fork()->dup_mmap() in between and we can miss the child. uprobe_register() could be easily fixed but unregister is much worse, the new mm inherits "int3" from parent and there is no way to detect this if uprobe goes away. So this patch simply adds percpu_down_read/up_read around dup_mmap(), and percpu_down_write/up_write into register_for_each_vma(). This adds 2 new hooks into dup_mmap() but we can kill uprobe_dup_mmap() and fold it into uprobe_end_dup_mmap(). Reported-by: Srikar Dronamraju Acked-by: Srikar Dronamraju Signed-off-by: Oleg Nesterov --- include/linux/uprobes.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h index 2615c4d7788d..4f628a6fc5b4 100644 --- a/include/linux/uprobes.h +++ b/include/linux/uprobes.h @@ -97,6 +97,8 @@ extern int uprobe_register(struct inode *inode, loff_t offset, struct uprobe_con extern void uprobe_unregister(struct inode *inode, loff_t offset, struct uprobe_consumer *uc); extern int uprobe_mmap(struct vm_area_struct *vma); extern void uprobe_munmap(struct vm_area_struct *vma, unsigned long start, unsigned long end); +extern void uprobe_start_dup_mmap(void); +extern void uprobe_end_dup_mmap(void); extern void uprobe_dup_mmap(struct mm_struct *oldmm, struct mm_struct *newmm); extern void uprobe_free_utask(struct task_struct *t); extern void uprobe_copy_process(struct task_struct *t); @@ -127,6 +129,12 @@ static inline void uprobe_munmap(struct vm_area_struct *vma, unsigned long start, unsigned long end) { } +static inline void uprobe_start_dup_mmap(void) +{ +} +static inline void uprobe_end_dup_mmap(void) +{ +} static inline void uprobe_dup_mmap(struct mm_struct *oldmm, struct mm_struct *newmm) { -- cgit v1.2.3 From 40fc3bb56ed125aa22c0a85c816ae0f923519146 Mon Sep 17 00:00:00 2001 From: Jon Hunter Date: Fri, 28 Sep 2012 11:34:49 -0500 Subject: ARM: OMAP: Add platform data header for DMTIMERs Move definition of dmtimer platform data structure in to its own header under . Signed-off-by: Jon Hunter --- include/linux/platform_data/dmtimer-omap.h | 31 ++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 include/linux/platform_data/dmtimer-omap.h (limited to 'include/linux') diff --git a/include/linux/platform_data/dmtimer-omap.h b/include/linux/platform_data/dmtimer-omap.h new file mode 100644 index 000000000000..a19b78d826e9 --- /dev/null +++ b/include/linux/platform_data/dmtimer-omap.h @@ -0,0 +1,31 @@ +/* + * DMTIMER platform data for TI OMAP platforms + * + * Copyright (C) 2012 Texas Instruments + * Author: Jon Hunter + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . + */ + +#ifndef __PLATFORM_DATA_DMTIMER_OMAP_H__ +#define __PLATFORM_DATA_DMTIMER_OMAP_H__ + +struct dmtimer_platform_data { + /* set_timer_src - Only used for OMAP1 devices */ + int (*set_timer_src)(struct platform_device *pdev, int source); + u32 timer_capability; + u32 timer_errata; + int (*get_context_loss_count)(struct device *); +}; + +#endif /* __PLATFORM_DATA_DMTIMER_OMAP_H__ */ -- cgit v1.2.3 From 7583fe778f77cbeb37f54ff5b9afd96119fcab43 Mon Sep 17 00:00:00 2001 From: Piotr Haber Date: Thu, 8 Nov 2012 09:47:27 +0100 Subject: ssb: fix SPROM offset Offset for temperature compensation values is wrong in ssb SPROMv8 map. Reviewed-by: Pieter-Paul Giesberts Reviewed-by: Arend van Spriel Signed-off-by: Piotr Haber Signed-off-by: John W. Linville --- include/linux/ssb/ssb_regs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb_regs.h b/include/linux/ssb/ssb_regs.h index a0525019e1d1..6ecfa02ddbac 100644 --- a/include/linux/ssb/ssb_regs.h +++ b/include/linux/ssb/ssb_regs.h @@ -485,7 +485,7 @@ #define SSB_SPROM8_HWIQ_IQSWP_IQCAL_SWP_SHIFT 4 #define SSB_SPROM8_HWIQ_IQSWP_HW_IQCAL 0x0020 #define SSB_SPROM8_HWIQ_IQSWP_HW_IQCAL_SHIFT 5 -#define SSB_SPROM8_TEMPDELTA 0x00BA +#define SSB_SPROM8_TEMPDELTA 0x00BC #define SSB_SPROM8_TEMPDELTA_PHYCAL 0x00ff #define SSB_SPROM8_TEMPDELTA_PHYCAL_SHIFT 0 #define SSB_SPROM8_TEMPDELTA_PERIOD 0x0f00 -- cgit v1.2.3 From 7dbce021a6df9d4812385d11729140829abc3f95 Mon Sep 17 00:00:00 2001 From: Samuel Iglesias Gonsalvez Date: Fri, 16 Nov 2012 19:33:45 +0100 Subject: ipack: move header files to include/linux Move ipack header files to include/linux/ directory where they belong. Signed-off-by: Samuel Iglesias Gonsalvez Signed-off-by: Greg Kroah-Hartman --- include/linux/ipack.h | 213 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 213 insertions(+) create mode 100644 include/linux/ipack.h (limited to 'include/linux') diff --git a/include/linux/ipack.h b/include/linux/ipack.h new file mode 100644 index 000000000000..7a0a3085ab5b --- /dev/null +++ b/include/linux/ipack.h @@ -0,0 +1,213 @@ +/* + * Industry-pack bus. + * + * Copyright (C) 2011-2012 CERN (www.cern.ch) + * Author: Samuel Iglesias Gonsalvez + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; version 2 of the License. + */ + +#include +#include +#include + +#define IPACK_IDPROM_OFFSET_I 0x01 +#define IPACK_IDPROM_OFFSET_P 0x03 +#define IPACK_IDPROM_OFFSET_A 0x05 +#define IPACK_IDPROM_OFFSET_C 0x07 +#define IPACK_IDPROM_OFFSET_MANUFACTURER_ID 0x09 +#define IPACK_IDPROM_OFFSET_MODEL 0x0B +#define IPACK_IDPROM_OFFSET_REVISION 0x0D +#define IPACK_IDPROM_OFFSET_RESERVED 0x0F +#define IPACK_IDPROM_OFFSET_DRIVER_ID_L 0x11 +#define IPACK_IDPROM_OFFSET_DRIVER_ID_H 0x13 +#define IPACK_IDPROM_OFFSET_NUM_BYTES 0x15 +#define IPACK_IDPROM_OFFSET_CRC 0x17 + +struct ipack_bus_ops; +struct ipack_driver; + +enum ipack_space { + IPACK_IO_SPACE = 0, + IPACK_ID_SPACE, + IPACK_INT_SPACE, + IPACK_MEM8_SPACE, + IPACK_MEM16_SPACE, + /* Dummy for counting the number of entries. Must remain the last + * entry */ + IPACK_SPACE_COUNT, +}; + +/** + */ +struct ipack_region { + phys_addr_t start; + size_t size; +}; + +/** + * struct ipack_device + * + * @slot: Slot where the device is plugged in the carrier board + * @bus: ipack_bus_device where the device is plugged to. + * @id_space: Virtual address to ID space. + * @io_space: Virtual address to IO space. + * @mem_space: Virtual address to MEM space. + * @dev: device in kernel representation. + * + * Warning: Direct access to mapped memory is possible but the endianness + * is not the same with PCI carrier or VME carrier. The endianness is managed + * by the carrier board throught bus->ops. + */ +struct ipack_device { + unsigned int slot; + struct ipack_bus_device *bus; + struct device dev; + void (*release) (struct ipack_device *dev); + struct ipack_region region[IPACK_SPACE_COUNT]; + u8 *id; + size_t id_avail; + u32 id_vendor; + u32 id_device; + u8 id_format; + unsigned int id_crc_correct:1; + unsigned int speed_8mhz:1; + unsigned int speed_32mhz:1; +}; + +/** + * struct ipack_driver_ops -- Callbacks to IPack device driver + * + * @probe: Probe function + * @remove: Prepare imminent removal of the device. Services provided by the + * device should be revoked. + */ + +struct ipack_driver_ops { + int (*probe) (struct ipack_device *dev); + void (*remove) (struct ipack_device *dev); +}; + +/** + * struct ipack_driver -- Specific data to each ipack device driver + * + * @driver: Device driver kernel representation + * @ops: Callbacks provided by the IPack device driver + */ +struct ipack_driver { + struct device_driver driver; + const struct ipack_device_id *id_table; + const struct ipack_driver_ops *ops; +}; + +/** + * struct ipack_bus_ops - available operations on a bridge module + * + * @map_space: map IP address space + * @unmap_space: unmap IP address space + * @request_irq: request IRQ + * @free_irq: free IRQ + * @get_clockrate: Returns the clockrate the carrier is currently + * communicating with the device at. + * @set_clockrate: Sets the clock-rate for carrier / module communication. + * Should return -EINVAL if the requested speed is not supported. + * @get_error: Returns the error state for the slot the device is attached + * to. + * @get_timeout: Returns 1 if the communication with the device has + * previously timed out. + * @reset_timeout: Resets the state returned by get_timeout. + */ +struct ipack_bus_ops { + int (*request_irq) (struct ipack_device *dev, + irqreturn_t (*handler)(void *), void *arg); + int (*free_irq) (struct ipack_device *dev); + int (*get_clockrate) (struct ipack_device *dev); + int (*set_clockrate) (struct ipack_device *dev, int mherz); + int (*get_error) (struct ipack_device *dev); + int (*get_timeout) (struct ipack_device *dev); + int (*reset_timeout) (struct ipack_device *dev); +}; + +/** + * struct ipack_bus_device + * + * @dev: pointer to carrier device + * @slots: number of slots available + * @bus_nr: ipack bus number + * @ops: bus operations for the mezzanine drivers + */ +struct ipack_bus_device { + struct device *parent; + int slots; + int bus_nr; + const struct ipack_bus_ops *ops; +}; + +/** + * ipack_bus_register -- register a new ipack bus + * + * @parent: pointer to the parent device, if any. + * @slots: number of slots available in the bus device. + * @ops: bus operations for the mezzanine drivers. + * + * The carrier board device should call this function to register itself as + * available bus device in ipack. + */ +struct ipack_bus_device *ipack_bus_register(struct device *parent, int slots, + const struct ipack_bus_ops *ops); + +/** + * ipack_bus_unregister -- unregister an ipack bus + */ +int ipack_bus_unregister(struct ipack_bus_device *bus); + +/** + * ipack_driver_register -- Register a new ipack device driver + * + * Called by a ipack driver to register itself as a driver + * that can manage ipack devices. + */ +int ipack_driver_register(struct ipack_driver *edrv, struct module *owner, + const char *name); +void ipack_driver_unregister(struct ipack_driver *edrv); + +/** + * ipack_device_register -- register an IPack device with the kernel + * @dev: the new device to register. + * + * Register a new IPack device ("module" in IndustryPack jargon). The call + * is done by the carrier driver. The carrier should populate the fields + * bus and slot as well as the region array of @dev prior to calling this + * function. The rest of the fields will be allocated and populated + * during registration. + * + * Return zero on success or error code on failure. + */ +int ipack_device_register(struct ipack_device *dev); +void ipack_device_unregister(struct ipack_device *dev); + +/** + * DEFINE_IPACK_DEVICE_TABLE - macro used to describe a IndustryPack table + * @_table: device table name + * + * This macro is used to create a struct ipack_device_id array (a device table) + * in a generic manner. + */ +#define DEFINE_IPACK_DEVICE_TABLE(_table) \ + const struct ipack_device_id _table[] __devinitconst + +/** + * IPACK_DEVICE - macro used to describe a specific IndustryPack device + * @_format: the format version (currently either 1 or 2, 8 bit value) + * @vend: the 8 or 24 bit IndustryPack Vendor ID + * @dev: the 8 or 16 bit IndustryPack Device ID + * + * This macro is used to create a struct ipack_device_id that matches a specific + * device. + */ +#define IPACK_DEVICE(_format, vend, dev) \ + .format = (_format), \ + .vendor = (vend), \ + .device = (dev) -- cgit v1.2.3 From 27cf2d1b873fc50a2c0388253ec666fa4c61bfd4 Mon Sep 17 00:00:00 2001 From: Samuel Iglesias Gonsalvez Date: Fri, 16 Nov 2012 19:33:46 +0100 Subject: ipack: remove ipack_ids.h file Its contents are merged into ipack.h. So this file is not needed. Doing that, it simplifies the ipack-related driver development. Signed-off-by: Samuel Iglesias Gonsalvez Signed-off-by: Greg Kroah-Hartman --- include/linux/ipack.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ipack.h b/include/linux/ipack.h index 7a0a3085ab5b..a360c73129a6 100644 --- a/include/linux/ipack.h +++ b/include/linux/ipack.h @@ -26,6 +26,39 @@ #define IPACK_IDPROM_OFFSET_NUM_BYTES 0x15 #define IPACK_IDPROM_OFFSET_CRC 0x17 +/* + * IndustryPack Fromat, Vendor and Device IDs. + */ + +/* ID section format versions */ +#define IPACK_ID_VERSION_INVALID 0x00 +#define IPACK_ID_VERSION_1 0x01 +#define IPACK_ID_VERSION_2 0x02 + +/* Vendors and devices. Sort key: vendor first, device next. */ +#define IPACK1_VENDOR_ID_RESERVED1 0x00 +#define IPACK1_VENDOR_ID_RESERVED2 0xFF +#define IPACK1_VENDOR_ID_UNREGISTRED01 0x01 +#define IPACK1_VENDOR_ID_UNREGISTRED02 0x02 +#define IPACK1_VENDOR_ID_UNREGISTRED03 0x03 +#define IPACK1_VENDOR_ID_UNREGISTRED04 0x04 +#define IPACK1_VENDOR_ID_UNREGISTRED05 0x05 +#define IPACK1_VENDOR_ID_UNREGISTRED06 0x06 +#define IPACK1_VENDOR_ID_UNREGISTRED07 0x07 +#define IPACK1_VENDOR_ID_UNREGISTRED08 0x08 +#define IPACK1_VENDOR_ID_UNREGISTRED09 0x09 +#define IPACK1_VENDOR_ID_UNREGISTRED10 0x0A +#define IPACK1_VENDOR_ID_UNREGISTRED11 0x0B +#define IPACK1_VENDOR_ID_UNREGISTRED12 0x0C +#define IPACK1_VENDOR_ID_UNREGISTRED13 0x0D +#define IPACK1_VENDOR_ID_UNREGISTRED14 0x0E +#define IPACK1_VENDOR_ID_UNREGISTRED15 0x0F + +#define IPACK1_VENDOR_ID_SBS 0xF0 +#define IPACK1_DEVICE_ID_SBS_OCTAL_232 0x22 +#define IPACK1_DEVICE_ID_SBS_OCTAL_422 0x2A +#define IPACK1_DEVICE_ID_SBS_OCTAL_485 0x48 + struct ipack_bus_ops; struct ipack_driver; -- cgit v1.2.3 From 404525d5a7ecc847b5ac178dad96402f1e102ccc Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Fri, 16 Nov 2012 21:21:43 +0100 Subject: clk: sunxi: Add dummy fixed rate clock for Allwinner A1X SoCs Signed-off-by: Maxime Ripard Cc: Mike Turquette --- include/linux/clk/sunxi.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 include/linux/clk/sunxi.h (limited to 'include/linux') diff --git a/include/linux/clk/sunxi.h b/include/linux/clk/sunxi.h new file mode 100644 index 000000000000..e074fdd5a236 --- /dev/null +++ b/include/linux/clk/sunxi.h @@ -0,0 +1,22 @@ +/* + * Copyright 2012 Maxime Ripard + * + * Maxime Ripard + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __LINUX_CLK_SUNXI_H_ +#define __LINUX_CLK_SUNXI_H_ + +void __init sunxi_init_clocks(void); + +#endif -- cgit v1.2.3 From b2ac5d7549710173ea0217bf8c7b3f71da5220d4 Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Mon, 12 Nov 2012 15:07:50 +0100 Subject: clocksource: sunxi: Add Allwinner A1X Timer Driver Signed-off-by: Maxime Ripard CC: Thomas Gleixner CC: John Stultz --- include/linux/sunxi_timer.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 include/linux/sunxi_timer.h (limited to 'include/linux') diff --git a/include/linux/sunxi_timer.h b/include/linux/sunxi_timer.h new file mode 100644 index 000000000000..b9165bba6e61 --- /dev/null +++ b/include/linux/sunxi_timer.h @@ -0,0 +1,24 @@ +/* + * Copyright 2012 Maxime Ripard + * + * Maxime Ripard + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __SUNXI_TIMER_H +#define __SUNXI_TIMER_H + +#include + +extern struct sys_timer sunxi_timer; + +#endif -- cgit v1.2.3 From afd24e146826cec0f46929263a0c874406a19cd8 Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Wed, 14 Nov 2012 09:59:14 +0100 Subject: irqchip: sunxi: Add irq controller driver Signed-off-by: Maxime Ripard CC: Thomas Gleixner --- include/linux/irqchip/sunxi.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 include/linux/irqchip/sunxi.h (limited to 'include/linux') diff --git a/include/linux/irqchip/sunxi.h b/include/linux/irqchip/sunxi.h new file mode 100644 index 000000000000..1fe2c2260e2b --- /dev/null +++ b/include/linux/irqchip/sunxi.h @@ -0,0 +1,27 @@ +/* + * Copyright 2012 Maxime Ripard + * + * Maxime Ripard + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __LINUX_IRQCHIP_SUNXI_H +#define __LINUX_IRQCHIP_SUNXI_H + +#include + +extern void sunxi_init_irq(void); + +extern asmlinkage void __exception_irq_entry sunxi_handle_irq( + struct pt_regs *regs); + +#endif -- cgit v1.2.3 From bea8c150a7efbc0f204e709b7274fe273f55e0d3 Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Fri, 16 Nov 2012 14:14:54 -0800 Subject: memcg: fix hotplugged memory zone oops When MEMCG is configured on (even when it's disabled by boot option), when adding or removing a page to/from its lru list, the zone pointer used for stats updates is nowadays taken from the struct lruvec. (On many configurations, calculating zone from page is slower.) But we have no code to update all the lruvecs (per zone, per memcg) when a memory node is hotadded. Here's an extract from the oops which results when running numactl to bind a program to a newly onlined node: BUG: unable to handle kernel NULL pointer dereference at 0000000000000f60 IP: __mod_zone_page_state+0x9/0x60 Pid: 1219, comm: numactl Not tainted 3.6.0-rc5+ #180 Bochs Bochs Process numactl (pid: 1219, threadinfo ffff880039abc000, task ffff8800383c4ce0) Call Trace: __pagevec_lru_add_fn+0xdf/0x140 pagevec_lru_move_fn+0xb1/0x100 __pagevec_lru_add+0x1c/0x30 lru_add_drain_cpu+0xa3/0x130 lru_add_drain+0x2f/0x40 ... The natural solution might be to use a memcg callback whenever memory is hotadded; but that solution has not been scoped out, and it happens that we do have an easy location at which to update lruvec->zone. The lruvec pointer is discovered either by mem_cgroup_zone_lruvec() or by mem_cgroup_page_lruvec(), and both of those do know the right zone. So check and set lruvec->zone in those; and remove the inadequate attempt to set lruvec->zone from lruvec_init(), which is called before NODE_DATA(node) has been allocated in such cases. Ah, there was one exceptionr. For no particularly good reason, mem_cgroup_force_empty_list() has its own code for deciding lruvec. Change it to use the standard mem_cgroup_zone_lruvec() and mem_cgroup_get_lru_size() too. In fact it was already safe against such an oops (the lru lists in danger could only be empty), but we're better proofed against future changes this way. I've marked this for stable (3.6) since we introduced the problem in 3.5 (now closed to stable); but I have no idea if this is the only fix needed to get memory hotadd working with memcg in 3.6, and received no answer when I enquired twice before. Reported-by: Tang Chen Signed-off-by: Hugh Dickins Acked-by: Johannes Weiner Acked-by: KAMEZAWA Hiroyuki Cc: Konstantin Khlebnikov Cc: Wen Congyang Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 50aaca81f63d..a23923ba8263 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -752,7 +752,7 @@ extern int init_currently_empty_zone(struct zone *zone, unsigned long start_pfn, unsigned long size, enum memmap_context context); -extern void lruvec_init(struct lruvec *lruvec, struct zone *zone); +extern void lruvec_init(struct lruvec *lruvec); static inline struct zone *lruvec_zone(struct lruvec *lruvec) { -- cgit v1.2.3 From 2ca3cb50edc351875df13d083524f524cdeb3054 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Fri, 16 Nov 2012 14:14:56 -0800 Subject: rapidio: fix kernel-doc warnings Fix rapidio kernel-doc warnings: Warning(drivers/rapidio/rio.c:415): No description found for parameter 'local' Warning(drivers/rapidio/rio.c:415): Excess function parameter 'lstart' description in 'rio_map_inb_region' Warning(include/linux/rio.h:290): No description found for parameter 'switches' Warning(include/linux/rio.h:290): No description found for parameter 'destid_table' Signed-off-by: Randy Dunlap Cc: Matt Porter Acked-by: Alexandre Bounine Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rio.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/rio.h b/include/linux/rio.h index 4187da511006..a3e784278667 100644 --- a/include/linux/rio.h +++ b/include/linux/rio.h @@ -275,9 +275,11 @@ struct rio_id_table { * struct rio_net - RIO network info * @node: Node in global list of RIO networks * @devices: List of devices in this network + * @switches: List of switches in this netowrk * @mports: List of master ports accessing this network * @hport: Default port for accessing this network * @id: RIO network ID + * @destid_table: destID allocation table */ struct rio_net { struct list_head node; /* node in list of networks */ -- cgit v1.2.3 From 5576646f3c1abd60d72d19829de6f5d8c2ca8ecf Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Fri, 16 Nov 2012 14:15:06 -0800 Subject: revert "mm: fix-up zone present pages" Revert commit 7f1290f2f2a4 ("mm: fix-up zone present pages") That patch tried to fix a issue when calculating zone->present_pages, but it caused a regression on 32bit systems with HIGHMEM. With that change, reset_zone_present_pages() resets all zone->present_pages to zero, and fixup_zone_present_pages() is called to recalculate zone->present_pages when the boot allocator frees core memory pages into buddy allocator. Because highmem pages are not freed by bootmem allocator, all highmem zones' present_pages becomes zero. Various options for improving the situation are being discussed but for now, let's return to the 3.6 code. Cc: Jianguo Wu Cc: Jiang Liu Cc: Petr Tesarik Cc: "Luck, Tony" Cc: Mel Gorman Cc: Yinghai Lu Cc: Minchan Kim Cc: Johannes Weiner Acked-by: David Rientjes Tested-by: Chris Clayton Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index fa0680402738..bcaab4e6fe91 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1684,9 +1684,5 @@ static inline unsigned int debug_guardpage_minorder(void) { return 0; } static inline bool page_is_guard(struct page *page) { return false; } #endif /* CONFIG_DEBUG_PAGEALLOC */ -extern void reset_zone_present_pages(void); -extern void fixup_zone_present_pages(int nid, unsigned long start_pfn, - unsigned long end_pfn); - #endif /* __KERNEL__ */ #endif /* _LINUX_MM_H */ -- cgit v1.2.3 From c22618a11d1ba2966bd2cfd5e4918ed4f2dad13e Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Wed, 14 Nov 2012 22:37:12 +0000 Subject: drivers/of: Constify device_node->name and ->path_component_name Neither of these should ever be changed once set. Make them const and fix up the users that try to modify it in-place. In one case kmalloc+memcpy is replaced with kstrdup() to avoid modifying the string. Build tested with defconfigs on ARM, PowerPC, Sparc, MIPS, x86 among others. Signed-off-by: Grant Likely Acked-by: David S. Miller Cc: Benjamin Herrenschmidt Cc: Julian Calaby --- include/linux/of.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index b4e50d56fc74..857dde984a6e 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -46,7 +46,7 @@ struct device_node { const char *name; const char *type; phandle phandle; - char *full_name; + const char *full_name; struct property *properties; struct property *deadprops; /* removed properties */ @@ -60,7 +60,7 @@ struct device_node { unsigned long _flags; void *data; #if defined(CONFIG_SPARC) - char *path_component_name; + const char *path_component_name; unsigned int unique_id; struct of_irq_controller *irq_trans; #endif -- cgit v1.2.3 From 33a5f6261a61af28f7b4c86f9f958da0f206c914 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Thu, 11 Oct 2012 17:52:56 +0200 Subject: nohz: Add API to check tick state We need some quick way to check if the CPU has stopped its tick. This will be useful to implement the printk tick using the irq work subsystem. Signed-off-by: Frederic Weisbecker Acked-by: Steven Rostedt Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Andrew Morton Cc: Paul Gortmaker --- include/linux/tick.h | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/tick.h b/include/linux/tick.h index f37fceb69b73..2307dd31b966 100644 --- a/include/linux/tick.h +++ b/include/linux/tick.h @@ -8,6 +8,8 @@ #include #include +#include +#include #ifdef CONFIG_GENERIC_CLOCKEVENTS @@ -122,13 +124,26 @@ static inline int tick_oneshot_mode_active(void) { return 0; } #endif /* !CONFIG_GENERIC_CLOCKEVENTS */ # ifdef CONFIG_NO_HZ +DECLARE_PER_CPU(struct tick_sched, tick_cpu_sched); + +static inline int tick_nohz_tick_stopped(void) +{ + return __this_cpu_read(tick_cpu_sched.tick_stopped); +} + extern void tick_nohz_idle_enter(void); extern void tick_nohz_idle_exit(void); extern void tick_nohz_irq_exit(void); extern ktime_t tick_nohz_get_sleep_length(void); extern u64 get_cpu_idle_time_us(int cpu, u64 *last_update_time); extern u64 get_cpu_iowait_time_us(int cpu, u64 *last_update_time); -# else + +# else /* !CONFIG_NO_HZ */ +static inline int tick_nohz_tick_stopped(void) +{ + return 0; +} + static inline void tick_nohz_idle_enter(void) { } static inline void tick_nohz_idle_exit(void) { } -- cgit v1.2.3 From 00b42959106a9ca1c2899e591ae4e9a83ad6af05 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Wed, 7 Nov 2012 21:03:07 +0100 Subject: irq_work: Don't stop the tick with pending works Don't stop the tick if we have pending irq works on the queue, otherwise if the arch can't raise self-IPIs, we may not find an opportunity to execute the pending works for a while. Signed-off-by: Frederic Weisbecker Acked-by: Steven Rostedt Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Andrew Morton Cc: Paul Gortmaker --- include/linux/irq_work.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h index 6a9e8f5399e2..a69704f37204 100644 --- a/include/linux/irq_work.h +++ b/include/linux/irq_work.h @@ -20,4 +20,10 @@ bool irq_work_queue(struct irq_work *work); void irq_work_run(void); void irq_work_sync(struct irq_work *work); +#ifdef CONFIG_IRQ_WORK +bool irq_work_needs_cpu(void); +#else +static bool irq_work_needs_cpu(void) { return false; } +#endif + #endif /* _LINUX_IRQ_WORK_H */ -- cgit v1.2.3 From 60a8f428320918458a9a21052777eada68eebfd8 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Fri, 16 Nov 2012 19:39:17 -0800 Subject: x86, mm: Move after_bootmem to mm_internel.h it is only used in arch/x86/mm/init*.c Signed-off-by: Yinghai Lu Link: http://lkml.kernel.org/r/1353123563-3103-41-git-send-email-yinghai@kernel.org Signed-off-by: H. Peter Anvin --- include/linux/mm.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index bcaab4e6fe91..64d5271a3d36 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1355,7 +1355,6 @@ extern void __init mmap_init(void); extern void show_mem(unsigned int flags); extern void si_meminfo(struct sysinfo * val); extern void si_meminfo_node(struct sysinfo *val, int nid); -extern int after_bootmem; extern __printf(3, 4) void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...); -- cgit v1.2.3 From bc6679aef673f9dcb8f718528fc3df49ff661af9 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Fri, 19 Oct 2012 16:43:41 -0400 Subject: irq_work: Make self-IPIs optable On irq work initialization, let the user choose to define it as "lazy" or not. "Lazy" means that we don't want to send an IPI (provided the arch can anyway) when we enqueue this work but we rather prefer to wait for the next timer tick to execute our work if possible. This is going to be a benefit for non-urgent enqueuers (like printk in the future) that may prefer not to raise an IPI storm in case of frequent enqueuing on short periods of time. Signed-off-by: Frederic Weisbecker Acked-by: Steven Rostedt Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Andrew Morton Cc: Paul Gortmaker --- include/linux/irq_work.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h index a69704f37204..b28eb60c8bf6 100644 --- a/include/linux/irq_work.h +++ b/include/linux/irq_work.h @@ -3,6 +3,20 @@ #include +/* + * An entry can be in one of four states: + * + * free NULL, 0 -> {claimed} : free to be used + * claimed NULL, 3 -> {pending} : claimed to be enqueued + * pending next, 3 -> {busy} : queued, pending callback + * busy NULL, 2 -> {free, claimed} : callback in progress, can be claimed + */ + +#define IRQ_WORK_PENDING 1UL +#define IRQ_WORK_BUSY 2UL +#define IRQ_WORK_FLAGS 3UL +#define IRQ_WORK_LAZY 4UL /* Doesn't want IPI, wait for tick */ + struct irq_work { unsigned long flags; struct llist_node llnode; -- cgit v1.2.3 From 74876a98a87a115254b3a66a14b27320b7f0acaa Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Fri, 12 Oct 2012 18:00:23 +0200 Subject: printk: Wake up klogd using irq_work klogd is woken up asynchronously from the tick in order to do it safely. However if printk is called when the tick is stopped, the reader won't be woken up until the next interrupt, which might not fire for a while. As a result, the user may miss some message. To fix this, lets implement the printk tick using a lazy irq work. This subsystem takes care of the timer tick state and can fix up accordingly. Signed-off-by: Frederic Weisbecker Acked-by: Steven Rostedt Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Andrew Morton Cc: Paul Gortmaker --- include/linux/printk.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/printk.h b/include/linux/printk.h index 9afc01e5a0a6..86c4b6294713 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -98,9 +98,6 @@ int no_printk(const char *fmt, ...) extern asmlinkage __printf(1, 2) void early_printk(const char *fmt, ...); -extern int printk_needs_cpu(int cpu); -extern void printk_tick(void); - #ifdef CONFIG_PRINTK asmlinkage __printf(5, 0) int vprintk_emit(int facility, int level, -- cgit v1.2.3 From ea2ce92e44dc83b7a69c2aedd9c52bfe7fee1a62 Mon Sep 17 00:00:00 2001 From: Ramakrishna Pallala Date: Tue, 9 Oct 2012 22:25:29 +0530 Subject: power_supply: Add support for CHARGE_CONTROL_* attributes Add support for power supply attributes CHARGE_CONTROL_LIMIT and CHARGE_CONTROL_LIMIT_MAX. These new attributes will enable the user space to implement custom charging algorithms based on platform state. Signed-off-by: Ramakrishna Pallala Signed-off-by: Anton Vorontsov --- include/linux/power_supply.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index e5ef45834c3c..445b4b249af5 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -114,6 +114,8 @@ enum power_supply_property { POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, + POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, + POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX, POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN, POWER_SUPPLY_PROP_ENERGY_FULL, -- cgit v1.2.3 From 952aeeb3ee28bc12a70744e40636de40688eb60d Mon Sep 17 00:00:00 2001 From: Ramakrishna Pallala Date: Tue, 9 Oct 2012 22:25:59 +0530 Subject: power_supply: Register power supply for thermal cooling device This patch registers the power supply as a cooling device if the power supply has support for charge throttling. Now with this change low level drivers need not register with thermal framework as it is automatically done by power supply framework. Signed-off-by: Ramakrishna Pallala Signed-off-by: Anton Vorontsov --- include/linux/power_supply.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 445b4b249af5..1f0ab90aff00 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -188,6 +188,7 @@ struct power_supply { struct work_struct changed_work; #ifdef CONFIG_THERMAL struct thermal_zone_device *tzd; + struct thermal_cooling_device *tcd; #endif #ifdef CONFIG_LEDS_TRIGGERS -- cgit v1.2.3 From 08d816b8cb09de1fd8268c8f1dbc97c3cc435d67 Mon Sep 17 00:00:00 2001 From: "Kim, Milo" Date: Mon, 22 Oct 2012 00:18:54 +0000 Subject: lp8788-charger: Fix ADC channel names The name of ADC channel is configurable in the platform side. This name is referenced in the IIO consumer driver. To get the IIO channel, specific name in the platform data is used as an parameter of the iio_channel_get(). Thus, lp8788_adc_id platform data are replaced with specific names. Signed-off-by: Milo(Woogyom) Kim Signed-off-by: Anton Vorontsov --- include/linux/mfd/lp8788.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/lp8788.h b/include/linux/mfd/lp8788.h index cec364bdccfa..2a32b16f79cb 100644 --- a/include/linux/mfd/lp8788.h +++ b/include/linux/mfd/lp8788.h @@ -211,16 +211,16 @@ struct lp8788_chg_param { /* * struct lp8788_charger_platform_data - * @vbatt_adc : adc selection id for battery voltage - * @batt_temp_adc : adc selection id for battery temperature + * @adc_vbatt : adc channel name for battery voltage + * @adc_batt_temp : adc channel name for battery temperature * @max_vbatt_mv : used for calculating battery capacity * @chg_params : initial charging parameters * @num_chg_params : numbers of charging parameters * @charger_event : the charger event can be reported to the platform side */ struct lp8788_charger_platform_data { - enum lp8788_adc_id vbatt_adc; - enum lp8788_adc_id batt_temp_adc; + const char *adc_vbatt; + const char *adc_batt_temp; unsigned int max_vbatt_mv; struct lp8788_chg_param *chg_params; int num_chg_params; -- cgit v1.2.3 From 0bc98cc6155205b615a9d29a2d54d1b839521c04 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pali=20Roh=C3=A1r?= Date: Fri, 2 Nov 2012 20:18:11 +0100 Subject: power_supply: Add bq2415x charger driver MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The bq2415x charger driver is needed for example on Nokia N900 for charging battery. Driver is part of open source project to replace proprietary battery management. Signed-off-by: Pali Rohár Signed-off-by: Anton Vorontsov --- include/linux/power/bq2415x_charger.h | 90 +++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 include/linux/power/bq2415x_charger.h (limited to 'include/linux') diff --git a/include/linux/power/bq2415x_charger.h b/include/linux/power/bq2415x_charger.h new file mode 100644 index 000000000000..fb6bf4d8aea8 --- /dev/null +++ b/include/linux/power/bq2415x_charger.h @@ -0,0 +1,90 @@ +/* + bq2415x_charger.h - bq2415x charger driver + Copyright (C) 2011-2012 Pali Rohár + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#ifndef BQ2415X_CHARGER_H +#define BQ2415X_CHARGER_H + +/* + This is platform data for bq2415x chip. It contains default board voltages + and currents which can be also later configured via sysfs. If value is -1 + then default chip value (specified in datasheet) will be used. + + Value resistor_sense is needed for for configuring charge and termination + current. It it is less or equal to zero, configuring charge and termination + current will not be possible. + + Function set_mode_hook is needed for automode (setting correct current limit + when charger is connected/disconnected or setting boost mode). When is NULL, + automode function is disabled. When is not NULL, it must have this prototype: + + int (*set_mode_hook)( + void (*hook)(enum bq2415x_mode mode, void *data), + void *data) + + hook is hook function (see below) and data is pointer to driver private data + + bq2415x driver will call it as: + + platform_data->set_mode_hook(bq2415x_hook_function, bq2415x_device); + + Board/platform function set_mode_hook return non zero value when hook + function was successful registered. Platform code should call that hook + function (which get from pointer, with data) every time when charger was + connected/disconnected or require to enable boost mode. bq2415x driver then + will set correct current limit, enable/disable charger or boost mode. + + Hook function has this prototype: + + void hook(enum bq2415x_mode mode, void *data); + + mode is bq2415x mode (charger or boost) + data is pointer to driver private data (which get from set_charger_type_hook) + + When bq driver is being unloaded, it call function: + + platform_data->set_mode_hook(NULL, NULL); + + (hook function and driver private data are NULL) + + After that board/platform code must not call driver hook function! It is + possible that pointer to hook function will not be valid and calling will + cause undefined result. + +*/ + +/* Supported modes with maximal current limit */ +enum bq2415x_mode { + BQ2415X_MODE_NONE, /* unknown or no charger (100mA) */ + BQ2415X_MODE_HOST_CHARGER, /* usb host/hub charger (500mA) */ + BQ2415X_MODE_DEDICATED_CHARGER, /* dedicated charger (unlimited) */ + BQ2415X_MODE_BOOST, /* boost mode (charging disabled) */ +}; + +struct bq2415x_platform_data { + int current_limit; /* mA */ + int weak_battery_voltage; /* mV */ + int battery_regulation_voltage; /* mV */ + int charge_current; /* mA */ + int termination_current; /* mA */ + int resistor_sense; /* m ohm */ + int (*set_mode_hook)(void (*hook)(enum bq2415x_mode mode, void *data), + void *data); +}; + +#endif -- cgit v1.2.3 From 6c47a3e00c6e4f3cdac7566c1480de34d9e32e07 Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Sun, 18 Nov 2012 15:35:32 -0800 Subject: bq2415x_charger: Fix style issues I hate doing these style fixups myself, but I also hate inconsitent code. Normally I just ask to resubmit the patch with the issues fixed, but N900 is special: I have a selfish interest in it. :) Signed-off-by: Anton Vorontsov --- include/linux/power/bq2415x_charger.h | 131 ++++++++++++++++++---------------- 1 file changed, 68 insertions(+), 63 deletions(-) (limited to 'include/linux') diff --git a/include/linux/power/bq2415x_charger.h b/include/linux/power/bq2415x_charger.h index fb6bf4d8aea8..97a1665eaeaf 100644 --- a/include/linux/power/bq2415x_charger.h +++ b/include/linux/power/bq2415x_charger.h @@ -1,72 +1,77 @@ /* - bq2415x_charger.h - bq2415x charger driver - Copyright (C) 2011-2012 Pali Rohár - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -*/ + * bq2415x charger driver + * + * Copyright (C) 2011-2012 Pali Rohár + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ #ifndef BQ2415X_CHARGER_H #define BQ2415X_CHARGER_H /* - This is platform data for bq2415x chip. It contains default board voltages - and currents which can be also later configured via sysfs. If value is -1 - then default chip value (specified in datasheet) will be used. - - Value resistor_sense is needed for for configuring charge and termination - current. It it is less or equal to zero, configuring charge and termination - current will not be possible. - - Function set_mode_hook is needed for automode (setting correct current limit - when charger is connected/disconnected or setting boost mode). When is NULL, - automode function is disabled. When is not NULL, it must have this prototype: - - int (*set_mode_hook)( - void (*hook)(enum bq2415x_mode mode, void *data), - void *data) - - hook is hook function (see below) and data is pointer to driver private data - - bq2415x driver will call it as: - - platform_data->set_mode_hook(bq2415x_hook_function, bq2415x_device); - - Board/platform function set_mode_hook return non zero value when hook - function was successful registered. Platform code should call that hook - function (which get from pointer, with data) every time when charger was - connected/disconnected or require to enable boost mode. bq2415x driver then - will set correct current limit, enable/disable charger or boost mode. - - Hook function has this prototype: - - void hook(enum bq2415x_mode mode, void *data); - - mode is bq2415x mode (charger or boost) - data is pointer to driver private data (which get from set_charger_type_hook) - - When bq driver is being unloaded, it call function: - - platform_data->set_mode_hook(NULL, NULL); - - (hook function and driver private data are NULL) - - After that board/platform code must not call driver hook function! It is - possible that pointer to hook function will not be valid and calling will - cause undefined result. - -*/ + * This is platform data for bq2415x chip. It contains default board + * voltages and currents which can be also later configured via sysfs. If + * value is -1 then default chip value (specified in datasheet) will be + * used. + * + * Value resistor_sense is needed for for configuring charge and + * termination current. It it is less or equal to zero, configuring charge + * and termination current will not be possible. + * + * Function set_mode_hook is needed for automode (setting correct current + * limit when charger is connected/disconnected or setting boost mode). + * When is NULL, automode function is disabled. When is not NULL, it must + * have this prototype: + * + * int (*set_mode_hook)( + * void (*hook)(enum bq2415x_mode mode, void *data), + * void *data) + * + * hook is hook function (see below) and data is pointer to driver private + * data + * + * bq2415x driver will call it as: + * + * platform_data->set_mode_hook(bq2415x_hook_function, bq2415x_device); + * + * Board/platform function set_mode_hook return non zero value when hook + * function was successful registered. Platform code should call that hook + * function (which get from pointer, with data) every time when charger + * was connected/disconnected or require to enable boost mode. bq2415x + * driver then will set correct current limit, enable/disable charger or + * boost mode. + * + * Hook function has this prototype: + * + * void hook(enum bq2415x_mode mode, void *data); + * + * mode is bq2415x mode (charger or boost) + * data is pointer to driver private data (which get from + * set_charger_type_hook) + * + * When bq driver is being unloaded, it call function: + * + * platform_data->set_mode_hook(NULL, NULL); + * + * (hook function and driver private data are NULL) + * + * After that board/platform code must not call driver hook function! It + * is possible that pointer to hook function will not be valid and calling + * will cause undefined result. + */ /* Supported modes with maximal current limit */ enum bq2415x_mode { -- cgit v1.2.3 From 73f7ef435934e952c1d70d83d69921ea5d1f6bd4 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 16 Nov 2012 03:02:58 +0000 Subject: sysctl: Pass useful parameters to sysctl permissions - Current is implicitly avaiable so passing current->nsproxy isn't useful. - The ctl_table_header is needed to find how the sysctl table is connected to the rest of sysctl. - ctl_table_root is avaiable in the ctl_table_header so no need to it. With these changes it becomes possible to write a version of net_sysctl_permission that takes into account the network namespace of the sysctl table, an important feature in extending the user namespace. Acked-by: Serge Hallyn Signed-off-by: "Eric W. Biederman" Signed-off-by: David S. Miller --- include/linux/sysctl.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h index cd844a6a8d5f..14a8ff2de11e 100644 --- a/include/linux/sysctl.h +++ b/include/linux/sysctl.h @@ -158,8 +158,7 @@ struct ctl_table_root { struct ctl_table_set default_set; struct ctl_table_set *(*lookup)(struct ctl_table_root *root, struct nsproxy *namespaces); - int (*permissions)(struct ctl_table_root *root, - struct nsproxy *namespaces, struct ctl_table *table); + int (*permissions)(struct ctl_table_header *head, struct ctl_table *table); }; /* struct ctl_path describes where in the hierarchy a table is added */ -- cgit v1.2.3 From e0f1abeba5c2d8a2183566717d99294fd1a29c2e Mon Sep 17 00:00:00 2001 From: "Rajanikanth H.V" Date: Sun, 18 Nov 2012 18:45:41 -0800 Subject: ab8500: Add devicetree support for fuelgauge - This patch adds device tree support for fuelgauge driver - optimize bm devices platform_data usage and of_probe(...) Note: of_probe() routine for battery managed devices is made common across all bm drivers. - test status: - interrupt numbers assigned differs between legacy and FDT mode. Signed-off-by: Rajanikanth H.V Signed-off-by: Anton Vorontsov --- include/linux/mfd/abx500.h | 36 ++++++++++++------------------------ 1 file changed, 12 insertions(+), 24 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h index 5d5298d56026..33f2c58554f4 100644 --- a/include/linux/mfd/abx500.h +++ b/include/linux/mfd/abx500.h @@ -267,39 +267,27 @@ struct abx500_bm_data { int gnd_lift_resistance; const struct abx500_maxim_parameters *maxi; const struct abx500_bm_capacity_levels *cap_levels; - const struct abx500_battery_type *bat_type; + struct abx500_battery_type *bat_type; const struct abx500_bm_charger_parameters *chg_params; const struct abx500_fg_parameters *fg_params; }; -struct abx500_chargalg_platform_data { - char **supplied_to; - size_t num_supplicants; -}; - -struct abx500_charger_platform_data { - char **supplied_to; - size_t num_supplicants; - bool autopower_cfg; -}; +extern struct abx500_bm_data ab8500_bm_data; -struct abx500_btemp_platform_data { - char **supplied_to; - size_t num_supplicants; +struct abx500_bmdevs_plat_data { + char **supplied_to; + size_t num_supplicants; + bool autopower_cfg; }; -struct abx500_fg_platform_data { - char **supplied_to; - size_t num_supplicants; +enum { + NTC_EXTERNAL = 0, + NTC_INTERNAL, }; -struct abx500_bm_plat_data { - struct abx500_bm_data *battery; - struct abx500_charger_platform_data *charger; - struct abx500_btemp_platform_data *btemp; - struct abx500_fg_platform_data *fg; - struct abx500_chargalg_platform_data *chargalg; -}; +int bmdevs_of_probe(struct device *dev, + struct device_node *np, + struct abx500_bm_data **battery); int abx500_set_register_interruptible(struct device *dev, u8 bank, u8 reg, u8 value); -- cgit v1.2.3 From a12810ab9fcf0c9fd5e50b5e350a3ffbeaa571be Mon Sep 17 00:00:00 2001 From: "Rajanikanth H.V" Date: Wed, 31 Oct 2012 15:40:33 +0000 Subject: ab8500: Add devicetree support for chargalg This patch adds device tree support for charging algorithm driver Signed-off-by: Rajanikanth H.V Signed-off-by: Anton Vorontsov --- include/linux/mfd/abx500.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h index 33f2c58554f4..2138bd33021a 100644 --- a/include/linux/mfd/abx500.h +++ b/include/linux/mfd/abx500.h @@ -274,12 +274,6 @@ struct abx500_bm_data { extern struct abx500_bm_data ab8500_bm_data; -struct abx500_bmdevs_plat_data { - char **supplied_to; - size_t num_supplicants; - bool autopower_cfg; -}; - enum { NTC_EXTERNAL = 0, NTC_INTERNAL, -- cgit v1.2.3 From 5928f5389664fffa295c39bbe23de73069124451 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Mon, 19 Nov 2012 06:58:29 +0530 Subject: regulator: max8973: add regulator driver support The MAXIM MAX8973 high-efficiency, three phase, DC-DC step-down switching regulator delievers up to 9A of output current. Each phase operates at a 2MHz fixed frequency with a 120 deg shift from the adjacent phase, allowing the use of small magnetic component. Add regulator driver for this device. Signed-off-by: Laxman Dewangan Signed-off-by: Mark Brown --- include/linux/regulator/max8973-regulator.h | 72 +++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 include/linux/regulator/max8973-regulator.h (limited to 'include/linux') diff --git a/include/linux/regulator/max8973-regulator.h b/include/linux/regulator/max8973-regulator.h new file mode 100644 index 000000000000..f8acc052e353 --- /dev/null +++ b/include/linux/regulator/max8973-regulator.h @@ -0,0 +1,72 @@ +/* + * max8973-regulator.h -- MAXIM 8973 regulator + * + * Interface for regulator driver for MAXIM 8973 DC-DC step-down + * switching regulator. + * + * Copyright (C) 2012 NVIDIA Corporation + + * Author: Laxman Dewangan + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#ifndef __LINUX_REGULATOR_MAX8973_H +#define __LINUX_REGULATOR_MAX8973_H + +/* + * Control flags for configuration of the device. + * Client need to pass this information with ORed + */ +#define MAX8973_CONTROL_REMOTE_SENSE_ENABLE 0x00000001 +#define MAX8973_CONTROL_FALLING_SLEW_RATE_ENABLE 0x00000002 +#define MAX8973_CONTROL_OUTPUT_ACTIVE_DISCH_ENABLE 0x00000004 +#define MAX8973_CONTROL_BIAS_ENABLE 0x00000008 +#define MAX8973_CONTROL_PULL_DOWN_ENABLE 0x00000010 +#define MAX8973_CONTROL_FREQ_SHIFT_9PER_ENABLE 0x00000020 + +#define MAX8973_CONTROL_CLKADV_TRIP_DISABLED 0x00000000 +#define MAX8973_CONTROL_CLKADV_TRIP_75mV_PER_US 0x00010000 +#define MAX8973_CONTROL_CLKADV_TRIP_150mV_PER_US 0x00020000 +#define MAX8973_CONTROL_CLKADV_TRIP_75mV_PER_US_HIST_DIS 0x00030000 + +#define MAX8973_CONTROL_INDUCTOR_VALUE_NOMINAL 0x00000000 +#define MAX8973_CONTROL_INDUCTOR_VALUE_MINUS_30_PER 0x00100000 +#define MAX8973_CONTROL_INDUCTOR_VALUE_PLUS_30_PER 0x00200000 +#define MAX8973_CONTROL_INDUCTOR_VALUE_PLUS_60_PER 0x00300000 + +/* + * struct max8973_regulator_platform_data - max8973 regulator platform data. + * + * @reg_init_data: The regulator init data. + * @control_flags: Control flags which are ORed value of above flags to + * configure device. + * @enable_ext_control: Enable the voltage enable/disable through external + * control signal from EN input pin. If it is false then + * voltage output will be enabled/disabled through EN bit of + * device register. + * @dvs_gpio: GPIO for dvs. It should be -1 if this is tied with fixed logic. + * @dvs_def_state: Default state of dvs. 1 if it is high else 0. + */ +struct max8973_regulator_platform_data { + struct regulator_init_data *reg_init_data; + unsigned long control_flags; + bool enable_ext_control; + int dvs_gpio; + unsigned dvs_def_state:1; +}; + +#endif /* __LINUX_REGULATOR_MAX8973_H */ -- cgit v1.2.3 From 0857ba3c24c308f42a242fe8a1894772750230ce Mon Sep 17 00:00:00 2001 From: Aaro Koskinen Date: Sun, 18 Nov 2012 18:36:19 +0200 Subject: i2c: i2c-cbus-gpio: introduce driver Add i2c driver to enable access to devices behind CBUS on Nokia Internet Tablets. The patch also adds CBUS I2C configuration for N8x0 which is one of the users of this driver. Acked-by: Felipe Balbi Acked-by: Tony Lindgren Signed-off-by: Aaro Koskinen Signed-off-by: Wolfram Sang --- include/linux/platform_data/i2c-cbus-gpio.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 include/linux/platform_data/i2c-cbus-gpio.h (limited to 'include/linux') diff --git a/include/linux/platform_data/i2c-cbus-gpio.h b/include/linux/platform_data/i2c-cbus-gpio.h new file mode 100644 index 000000000000..6faa992a9502 --- /dev/null +++ b/include/linux/platform_data/i2c-cbus-gpio.h @@ -0,0 +1,27 @@ +/* + * i2c-cbus-gpio.h - CBUS I2C platform_data definition + * + * Copyright (C) 2004-2009 Nokia Corporation + * + * Written by Felipe Balbi and Aaro Koskinen. + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file "COPYING" in the main directory of this + * archive for more details. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __INCLUDE_LINUX_I2C_CBUS_GPIO_H +#define __INCLUDE_LINUX_I2C_CBUS_GPIO_H + +struct i2c_cbus_platform_data { + int dat_gpio; + int clk_gpio; + int sel_gpio; +}; + +#endif /* __INCLUDE_LINUX_I2C_CBUS_GPIO_H */ -- cgit v1.2.3 From 4a200c3b9a40242652b5734630bdd0bcf3aca75f Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Mon, 12 Nov 2012 15:42:59 +0100 Subject: HID: i2c-hid: introduce HID over i2c specification implementation Microsoft published the protocol specification of HID over i2c: http://msdn.microsoft.com/en-us/library/windows/hardware/hh852380.aspx This patch introduces an implementation of this protocol. This implementation does not includes the ACPI part of the specification. This will come when ACPI 5.0 devices enumeration will be available. Once the ACPI part is done, OEM will not have to declare HID over I2C devices in their platform specific driver. Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- include/linux/i2c/i2c-hid.h | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 include/linux/i2c/i2c-hid.h (limited to 'include/linux') diff --git a/include/linux/i2c/i2c-hid.h b/include/linux/i2c/i2c-hid.h new file mode 100644 index 000000000000..60e411d764d4 --- /dev/null +++ b/include/linux/i2c/i2c-hid.h @@ -0,0 +1,35 @@ +/* + * HID over I2C protocol implementation + * + * Copyright (c) 2012 Benjamin Tissoires + * Copyright (c) 2012 Ecole Nationale de l'Aviation Civile, France + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive for + * more details. + */ + +#ifndef __LINUX_I2C_HID_H +#define __LINUX_I2C_HID_H + +#include + +/** + * struct i2chid_platform_data - used by hid over i2c implementation. + * @hid_descriptor_address: i2c register where the HID descriptor is stored. + * + * Note that it is the responsibility of the platform driver (or the acpi 5.0 + * driver) to setup the irq related to the gpio in the struct i2c_board_info. + * The platform driver should also setup the gpio according to the device: + * + * A typical example is the following: + * irq = gpio_to_irq(intr_gpio); + * hkdk4412_i2c_devs5[0].irq = irq; // store the irq in i2c_board_info + * gpio_request(intr_gpio, "elan-irq"); + * s3c_gpio_setpull(intr_gpio, S3C_GPIO_PULL_UP); + */ +struct i2c_hid_platform_data { + u16 hid_descriptor_address; +}; + +#endif /* __LINUX_I2C_HID_H */ -- cgit v1.2.3 From 02582e9bcc36ed503ffede46e104a885dea222fb Mon Sep 17 00:00:00 2001 From: Masanari Iida Date: Wed, 22 Aug 2012 19:11:26 +0900 Subject: treewide: fix typo of "suport" in various comments and Kconfig Signed-off-by: Masanari Iida Signed-off-by: Jiri Kosina --- include/linux/stmmac.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h index a1547ea3920d..a619f7025cc9 100644 --- a/include/linux/stmmac.h +++ b/include/linux/stmmac.h @@ -61,7 +61,7 @@ #define STMMAC_CSR_I_16 0xE /* clk_csr_i/16 */ #define STMMAC_CSR_I_18 0xF /* clk_csr_i/18 */ -/* AXI DMA Burst length suported */ +/* AXI DMA Burst length supported */ #define DMA_AXI_BLEN_4 (1 << 1) #define DMA_AXI_BLEN_8 (1 << 2) #define DMA_AXI_BLEN_16 (1 << 3) -- cgit v1.2.3 From d93cf0687c9853bf91b1b9a5124ab97ebc47e00c Mon Sep 17 00:00:00 2001 From: Adam Buchbinder Date: Wed, 19 Sep 2012 21:47:58 -0400 Subject: various: Fix spelling of "registered" in comments. Some comments misspell "registered"; this fixes them. No code changes. Signed-off-by: Adam Buchbinder Signed-off-by: Jiri Kosina --- include/linux/netdevice.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index f8eda0276f03..b2056e6e2acc 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -369,7 +369,7 @@ typedef enum gro_result gro_result_t; * * If the rx_handler consider the skb should be ignored, it should return * RX_HANDLER_EXACT. The skb will only be delivered to protocol handlers that - * are registred on exact device (ptype->dev == skb->dev). + * are registered on exact device (ptype->dev == skb->dev). * * If the rx_handler didn't changed skb->dev, but want the skb to be normally * delivered, it should return RX_HANDLER_PASS. -- cgit v1.2.3 From 48fc7f7e787dd65ffe88521bce31f4062ba273eb Mon Sep 17 00:00:00 2001 From: Adam Buchbinder Date: Wed, 19 Sep 2012 21:48:00 -0400 Subject: Fix misspellings of "whether" in comments. "Whether" is misspelled in various comments across the tree; this fixes them. No code changes. Signed-off-by: Adam Buchbinder Signed-off-by: Jiri Kosina --- include/linux/lru_cache.h | 4 ++-- include/linux/vgaarb.h | 4 ++-- include/linux/watchdog.h | 2 +- 3 files changed, 5 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/lru_cache.h b/include/linux/lru_cache.h index 7a71ffad037c..cafc7f99e124 100644 --- a/include/linux/lru_cache.h +++ b/include/linux/lru_cache.h @@ -52,8 +52,8 @@ We replicate IO (more or less synchronously) to local and remote disk. For crash recovery after replication node failure, we need to resync all regions that have been target of in-flight WRITE IO - (in use, or "hot", regions), as we don't know wether or not those WRITEs have - made it to stable storage. + (in use, or "hot", regions), as we don't know whether or not those WRITEs + have made it to stable storage. To avoid a "full resync", we need to persistently track these regions. diff --git a/include/linux/vgaarb.h b/include/linux/vgaarb.h index 0ee42d9acdc0..2c02f3a8d2ba 100644 --- a/include/linux/vgaarb.h +++ b/include/linux/vgaarb.h @@ -78,7 +78,7 @@ extern void vga_set_legacy_decoding(struct pci_dev *pdev, * This function acquires VGA resources for the given * card and mark those resources locked. If the resource requested * are "normal" (and not legacy) resources, the arbiter will first check - * wether the card is doing legacy decoding for that type of resource. If + * whether the card is doing legacy decoding for that type of resource. If * yes, the lock is "converted" into a legacy resource lock. * The arbiter will first look for all VGA cards that might conflict * and disable their IOs and/or Memory access, including VGA forwarding @@ -89,7 +89,7 @@ extern void vga_set_legacy_decoding(struct pci_dev *pdev, * This function will block if some conflicting card is already locking * one of the required resources (or any resource on a different bus * segment, since P2P bridges don't differenciate VGA memory and IO - * afaik). You can indicate wether this blocking should be interruptible + * afaik). You can indicate whether this blocking should be interruptible * by a signal (for userland interface) or not. * Must not be called at interrupt time or in atomic context. * If the card already owns the resources, the function succeeds. diff --git a/include/linux/watchdog.h b/include/linux/watchdog.h index b7f45d48b2de..87490ac4bd87 100644 --- a/include/linux/watchdog.h +++ b/include/linux/watchdog.h @@ -105,7 +105,7 @@ struct watchdog_device { #define WATCHDOG_NOWAYOUT_INIT_STATUS 0 #endif -/* Use the following function to check wether or not the watchdog is active */ +/* Use the following function to check whether or not the watchdog is active */ static inline bool watchdog_active(struct watchdog_device *wdd) { return test_bit(WDOG_ACTIVE, &wdd->status); -- cgit v1.2.3 From b3834be5c42a5d2fd85ff4b819fa38983b1450e6 Mon Sep 17 00:00:00 2001 From: Adam Buchbinder Date: Wed, 19 Sep 2012 21:48:02 -0400 Subject: various: Fix spelling of "asynchronous" in comments. "Asynchronous" is misspelled in some comments. No code changes. Signed-off-by: Adam Buchbinder Signed-off-by: Jiri Kosina --- include/linux/dlm.h | 2 +- include/linux/ipmi_smi.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dlm.h b/include/linux/dlm.h index 1d47dcce11e1..d02da2c6fc1a 100644 --- a/include/linux/dlm.h +++ b/include/linux/dlm.h @@ -98,7 +98,7 @@ int dlm_release_lockspace(dlm_lockspace_t *lockspace, int force); /* * dlm_lock * - * Make an asyncronous request to acquire or convert a lock on a named + * Make an asynchronous request to acquire or convert a lock on a named * resource. * * lockspace: context for the request diff --git a/include/linux/ipmi_smi.h b/include/linux/ipmi_smi.h index fcb5d44ea635..8ea3fe0b9759 100644 --- a/include/linux/ipmi_smi.h +++ b/include/linux/ipmi_smi.h @@ -216,7 +216,7 @@ int ipmi_unregister_smi(ipmi_smi_t intf); /* * The lower layer reports received messages through this interface. - * The data_size should be zero if this is an asyncronous message. If + * The data_size should be zero if this is an asynchronous message. If * the lower layer gets an error sending a message, it should format * an error response in the message response. */ -- cgit v1.2.3 From 49f4d8b93ccf9454284b6f524b96c66d8d7fbccc Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Thu, 2 Aug 2012 04:25:10 -0700 Subject: pidns: Capture the user namespace and filter ns_last_pid - Capture the the user namespace that creates the pid namespace - Use that user namespace to test if it is ok to write to /proc/sys/kernel/ns_last_pid. Zhao Hongjiang noticed I was missing a put_user_ns in when destroying a pid_ns. I have foloded his patch into this one so that bisects will work properly. Acked-by: Serge Hallyn Signed-off-by: "Eric W. Biederman" --- include/linux/pid_namespace.h | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h index 65e3e87eacc5..c89c9cfcd247 100644 --- a/include/linux/pid_namespace.h +++ b/include/linux/pid_namespace.h @@ -31,6 +31,7 @@ struct pid_namespace { #ifdef CONFIG_BSD_PROCESS_ACCT struct bsd_acct_struct *bacct; #endif + struct user_namespace *user_ns; kgid_t pid_gid; int hide_pid; int reboot; /* group exit code if this pidns was rebooted */ @@ -46,7 +47,8 @@ static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns) return ns; } -extern struct pid_namespace *copy_pid_ns(unsigned long flags, struct pid_namespace *ns); +extern struct pid_namespace *copy_pid_ns(unsigned long flags, + struct user_namespace *user_ns, struct pid_namespace *ns); extern void zap_pid_ns_processes(struct pid_namespace *pid_ns); extern int reboot_pid_ns(struct pid_namespace *pid_ns, int cmd); extern void put_pid_ns(struct pid_namespace *ns); @@ -59,8 +61,8 @@ static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns) return ns; } -static inline struct pid_namespace * -copy_pid_ns(unsigned long flags, struct pid_namespace *ns) +static inline struct pid_namespace *copy_pid_ns(unsigned long flags, + struct user_namespace *user_ns, struct pid_namespace *ns) { if (flags & CLONE_NEWPID) ns = ERR_PTR(-EINVAL); -- cgit v1.2.3 From 0a01f2cc390e10633a54f72c608cc3fe19a50c3d Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Wed, 1 Aug 2012 10:33:47 -0700 Subject: pidns: Make the pidns proc mount/umount logic obvious. Track the number of pids in the proc hash table. When the number of pids goes to 0 schedule work to unmount the kernel mount of proc. Move the mount of proc into alloc_pid when we allocate the pid for init. Remove the surprising calls of pid_ns_release proc in fork and proc_flush_task. Those code paths really shouldn't know about proc namespace implementation details and people have demonstrated several times that finding and understanding those code paths is difficult and non-obvious. Because of the call path detach pid is alwasy called with the rtnl_lock held free_pid is not allowed to sleep, so the work to unmounting proc is moved to a work queue. This has the side benefit of not blocking the entire world waiting for the unnecessary rcu_barrier in deactivate_locked_super. In the process of making the code clear and obvious this fixes a bug reported by Gao feng where we would leak a mount of proc during clone(CLONE_NEWPID|CLONE_NEWNET) if copy_pid_ns succeeded and copy_net_ns failed. Acked-by: "Serge E. Hallyn" Signed-off-by: "Eric W. Biederman" --- include/linux/pid_namespace.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h index c89c9cfcd247..4c96acdb2489 100644 --- a/include/linux/pid_namespace.h +++ b/include/linux/pid_namespace.h @@ -21,6 +21,7 @@ struct pid_namespace { struct kref kref; struct pidmap pidmap[PIDMAP_ENTRIES]; int last_pid; + int nr_hashed; struct task_struct *child_reaper; struct kmem_cache *pid_cachep; unsigned int level; @@ -32,6 +33,7 @@ struct pid_namespace { struct bsd_acct_struct *bacct; #endif struct user_namespace *user_ns; + struct work_struct proc_work; kgid_t pid_gid; int hide_pid; int reboot; /* group exit code if this pidns was rebooted */ -- cgit v1.2.3 From 57e8391d327609cbf12d843259c968b9e5c1838f Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sun, 7 Mar 2010 18:17:03 -0800 Subject: pidns: Add setns support - Pid namespaces are designed to be inescapable so verify that the passed in pid namespace is a child of the currently active pid namespace or the currently active pid namespace itself. Allowing the currently active pid namespace is important so the effects of an earlier setns can be cancelled. Signed-off-by: Eric W. Biederman --- include/linux/proc_fs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h index 3fd2e871ff1b..acaafcd40aa5 100644 --- a/include/linux/proc_fs.h +++ b/include/linux/proc_fs.h @@ -251,6 +251,7 @@ struct proc_ns_operations { extern const struct proc_ns_operations netns_operations; extern const struct proc_ns_operations utsns_operations; extern const struct proc_ns_operations ipcns_operations; +extern const struct proc_ns_operations pidns_operations; union proc_op { int (*proc_get_link)(struct dentry *, struct path *); -- cgit v1.2.3 From 8823c079ba7136dc1948d6f6dcb5f8022bde438e Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sun, 7 Mar 2010 18:49:36 -0800 Subject: vfs: Add setns support for the mount namespace setns support for the mount namespace is a little tricky as an arbitrary decision must be made about what to set fs->root and fs->pwd to, as there is no expectation of a relationship between the two mount namespaces. Therefore I arbitrarily find the root mount point, and follow every mount on top of it to find the top of the mount stack. Then I set fs->root and fs->pwd to that location. The topmost root of the mount stack seems like a reasonable place to be. Bind mount support for the mount namespace inodes has the possibility of creating circular dependencies between mount namespaces. Circular dependencies can result in loops that prevent mount namespaces from every being freed. I avoid creating those circular dependencies by adding a sequence number to the mount namespace and require all bind mounts be of a younger mount namespace into an older mount namespace. Add a helper function proc_ns_inode so it is possible to detect when we are attempting to bind mound a namespace inode. Acked-by: Serge Hallyn Signed-off-by: Eric W. Biederman --- include/linux/proc_fs.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h index acaafcd40aa5..9014c041e752 100644 --- a/include/linux/proc_fs.h +++ b/include/linux/proc_fs.h @@ -174,6 +174,7 @@ extern struct proc_dir_entry *proc_net_mkdir(struct net *net, const char *name, struct proc_dir_entry *parent); extern struct file *proc_ns_fget(int fd); +extern bool proc_ns_inode(struct inode *inode); #else @@ -229,6 +230,11 @@ static inline struct file *proc_ns_fget(int fd) return ERR_PTR(-EINVAL); } +static inline bool proc_ns_inode(struct inode *inode) +{ + return false; +} + #endif /* CONFIG_PROC_FS */ #if !defined(CONFIG_PROC_KCORE) @@ -252,6 +258,7 @@ extern const struct proc_ns_operations netns_operations; extern const struct proc_ns_operations utsns_operations; extern const struct proc_ns_operations ipcns_operations; extern const struct proc_ns_operations pidns_operations; +extern const struct proc_ns_operations mntns_operations; union proc_op { int (*proc_get_link)(struct dentry *, struct path *); -- cgit v1.2.3 From 771b1371686e0a63e938ada28de020b9a0040f55 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Thu, 26 Jul 2012 21:08:32 -0700 Subject: vfs: Add a user namespace reference from struct mnt_namespace This will allow for support for unprivileged mounts in a new user namespace. Acked-by: "Serge E. Hallyn" Signed-off-by: "Eric W. Biederman" --- include/linux/mnt_namespace.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mnt_namespace.h b/include/linux/mnt_namespace.h index 5a8e3903d770..12b2ab510323 100644 --- a/include/linux/mnt_namespace.h +++ b/include/linux/mnt_namespace.h @@ -4,9 +4,10 @@ struct mnt_namespace; struct fs_struct; +struct user_namespace; extern struct mnt_namespace *copy_mnt_ns(unsigned long, struct mnt_namespace *, - struct fs_struct *); + struct user_namespace *, struct fs_struct *); extern void put_mnt_ns(struct mnt_namespace *ns); extern const struct file_operations proc_mounts_operations; -- cgit v1.2.3 From 0c55cfc4166d9a0f38de779bd4d75a90afbe7734 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Thu, 26 Jul 2012 21:42:03 -0700 Subject: vfs: Allow unprivileged manipulation of the mount namespace. - Add a filesystem flag to mark filesystems that are safe to mount as an unprivileged user. - Add a filesystem flag to mark filesystems that don't need MNT_NODEV when mounted by an unprivileged user. - Relax the permission checks to allow unprivileged users that have CAP_SYS_ADMIN permissions in the user namespace referred to by the current mount namespace to be allowed to mount, unmount, and move filesystems. Acked-by: "Serge E. Hallyn" Signed-off-by: "Eric W. Biederman" --- include/linux/fs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index b33cfc97b9ca..5037aa6817fd 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1812,6 +1812,8 @@ struct file_system_type { #define FS_REQUIRES_DEV 1 #define FS_BINARY_MOUNTDATA 2 #define FS_HAS_SUBTYPE 4 +#define FS_USERNS_MOUNT 8 /* Can be mounted by userns root */ +#define FS_USERNS_DEV_MOUNT 16 /* A userns mount does not imply MNT_NODEV */ #define FS_REVAL_DOT 16384 /* Check the paths ".", ".." for staleness */ #define FS_RENAME_DOES_D_MOVE 32768 /* FS will handle d_move() during rename() internally. */ struct dentry *(*mount) (struct file_system_type *, int, -- cgit v1.2.3 From 5a306f5887d5fd840beb8ea872897fa89e8fcdef Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 14 Nov 2012 23:22:21 +0100 Subject: mac80211: introduce IEEE80211_NUM_TIDS and use it Introduce IEEE80211_NUM_TIDS in the generic 802.11 header file and use it in place of STA_TID_NUM and NUM_RX_DATA_QUEUES which are both really the number of TIDs. Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 4530d4960953..d68790903b9e 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -131,6 +131,8 @@ #define IEEE80211_MAX_MESH_ID_LEN 32 +#define IEEE80211_NUM_TIDS 16 + #define IEEE80211_QOS_CTL_LEN 2 /* 1d tag mask */ #define IEEE80211_QOS_CTL_TAG1D_MASK 0x0007 -- cgit v1.2.3 From fd25b4c2f226de818e1d2b71e3e681d28bcaf5ba Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Tue, 13 Nov 2012 18:21:22 +0100 Subject: vtime: Remove the underscore prefix invasion Prepending irq-unsafe vtime APIs with underscores was actually a bad idea as the result is a big mess in the API namespace that is even waiting to be further extended. Also these helpers are always called from irq safe callers except kvm. Just provide a vtime_account_system_irqsafe() for this specific case so that we can remove the underscore prefix on other vtime functions. Signed-off-by: Frederic Weisbecker Reviewed-by: Steven Rostedt Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Thomas Gleixner Cc: Steven Rostedt Cc: Paul Gortmaker Cc: Tony Luck Cc: Fenghua Yu Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Martin Schwidefsky Cc: Heiko Carstens --- include/linux/kvm_host.h | 4 ++-- include/linux/vtime.h | 8 ++++---- 2 files changed, 6 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 0e2212fe4784..f17158bdd4fc 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -741,7 +741,7 @@ static inline void kvm_guest_enter(void) * This is running in ioctl context so we can avoid * the call to vtime_account() with its unnecessary idle check. */ - vtime_account_system(current); + vtime_account_system_irqsafe(current); current->flags |= PF_VCPU; /* KVM does not hold any references to rcu protected data when it * switches CPU into a guest mode. In fact switching to a guest mode @@ -759,7 +759,7 @@ static inline void kvm_guest_exit(void) * This is running in ioctl context so we can avoid * the call to vtime_account() with its unnecessary idle check. */ - vtime_account_system(current); + vtime_account_system_irqsafe(current); current->flags &= ~PF_VCPU; } diff --git a/include/linux/vtime.h b/include/linux/vtime.h index 0c2a2d303020..5ad13c325deb 100644 --- a/include/linux/vtime.h +++ b/include/linux/vtime.h @@ -5,14 +5,14 @@ struct task_struct; #ifdef CONFIG_VIRT_CPU_ACCOUNTING extern void vtime_task_switch(struct task_struct *prev); -extern void __vtime_account_system(struct task_struct *tsk); extern void vtime_account_system(struct task_struct *tsk); -extern void __vtime_account_idle(struct task_struct *tsk); +extern void vtime_account_system_irqsafe(struct task_struct *tsk); +extern void vtime_account_idle(struct task_struct *tsk); extern void vtime_account(struct task_struct *tsk); #else static inline void vtime_task_switch(struct task_struct *prev) { } -static inline void __vtime_account_system(struct task_struct *tsk) { } static inline void vtime_account_system(struct task_struct *tsk) { } +static inline void vtime_account_system_irqsafe(struct task_struct *tsk) { } static inline void vtime_account(struct task_struct *tsk) { } #endif @@ -40,7 +40,7 @@ static inline void vtime_account_irq_enter(struct task_struct *tsk) static inline void vtime_account_irq_exit(struct task_struct *tsk) { /* On hard|softirq exit we always account to hard|softirq cputime */ - __vtime_account_system(tsk); + vtime_account_system(tsk); irqtime_account_irq(tsk); } -- cgit v1.2.3 From bcebdf846522056a84ba0b0cba5f5413868c9394 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Tue, 13 Nov 2012 23:51:06 +0100 Subject: vtime: Explicitly account pending user time on process tick All vtime implementations just flush the user time on process tick. Consolidate that in generic code by calling a user time accounting helper. This avoids an indirect call in ia64 and prepare to also consolidate vtime context switch code. Signed-off-by: Frederic Weisbecker Reviewed-by: Steven Rostedt Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Thomas Gleixner Cc: Steven Rostedt Cc: Paul Gortmaker Cc: Tony Luck Cc: Fenghua Yu Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Martin Schwidefsky Cc: Heiko Carstens --- include/linux/kernel_stat.h | 8 ++++++++ include/linux/vtime.h | 1 + 2 files changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h index 1865b1f29770..66b70780e910 100644 --- a/include/linux/kernel_stat.h +++ b/include/linux/kernel_stat.h @@ -127,7 +127,15 @@ extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t) extern void account_steal_time(cputime_t); extern void account_idle_time(cputime_t); +#ifdef CONFIG_VIRT_CPU_ACCOUNTING +static inline void account_process_tick(struct task_struct *tsk, int user) +{ + vtime_account_user(tsk); +} +#else extern void account_process_tick(struct task_struct *, int user); +#endif + extern void account_steal_ticks(unsigned long ticks); extern void account_idle_ticks(unsigned long ticks); diff --git a/include/linux/vtime.h b/include/linux/vtime.h index 5ad13c325deb..ae30ab58431a 100644 --- a/include/linux/vtime.h +++ b/include/linux/vtime.h @@ -8,6 +8,7 @@ extern void vtime_task_switch(struct task_struct *prev); extern void vtime_account_system(struct task_struct *tsk); extern void vtime_account_system_irqsafe(struct task_struct *tsk); extern void vtime_account_idle(struct task_struct *tsk); +extern void vtime_account_user(struct task_struct *tsk); extern void vtime_account(struct task_struct *tsk); #else static inline void vtime_task_switch(struct task_struct *prev) { } -- cgit v1.2.3 From febfcef60d4f9457785b45aab548bc7ee5ea158f Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 19 Nov 2012 08:13:36 -0800 Subject: cgroup: cgroup->dentry isn't a RCU pointer cgroup->dentry is marked and used as a RCU pointer; however, it isn't one - the final dentry put doesn't go through call_rcu(). cgroup and dentry share the same RCU freeing rule via synchronize_rcu() in cgroup_diput() (kfree_rcu() used on cgrp is unnecessary). If cgrp is accessible under RCU read lock, so is its dentry and dereferencing cgrp->dentry doesn't need any further RCU protection or annotation. While not being accurate, before the previous patch, the RCU accessors served a purpose as memory barriers - cgroup->dentry used to be assigned after the cgroup was made visible to cgroup_path(), so the assignment and dereferencing in cgroup_path() needed the memory barrier pair. Now that list_add_tail_rcu() happens after cgroup->dentry is assigned, this no longer is necessary. Remove the now unnecessary and misleading RCU annotations from cgroup->dentry. To make up for the removal of rcu_dereference_check() in cgroup_path(), add an explicit rcu_lockdep_assert(), which asserts the dereference rule of @cgrp, not cgrp->dentry. Signed-off-by: Tejun Heo Acked-by: Li Zefan --- include/linux/cgroup.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 8f64b459fbd4..d605857c4bf3 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -165,7 +165,7 @@ struct cgroup { struct list_head files; /* my files */ struct cgroup *parent; /* my parent */ - struct dentry __rcu *dentry; /* cgroup fs entry, RCU protected */ + struct dentry *dentry; /* cgroup fs entry, RCU protected */ /* Private pointers for each registered subsystem */ struct cgroup_subsys_state *subsys[CGROUP_SUBSYS_COUNT]; -- cgit v1.2.3 From 38b53abaa3e0c7e750ef73eee919cf42eee6b134 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 19 Nov 2012 08:13:36 -0800 Subject: cgroup: make CSS_* flags bit masks instead of bit positions Currently, CSS_* flags are defined as bit positions and manipulated using atomic bitops. There's no reason to use atomic bitops for them and bit positions are clunkier to deal with than bit masks. Make CSS_* bit masks instead and use the usual C bitwise operators to access them. Signed-off-by: Tejun Heo Acked-by: Li Zefan --- include/linux/cgroup.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index d605857c4bf3..a0fc64167129 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -81,7 +81,7 @@ struct cgroup_subsys_state { /* bits in struct cgroup_subsys_state flags field */ enum { - CSS_ROOT, /* This CSS is the root of the subsystem */ + CSS_ROOT = (1 << 0), /* this CSS is the root of the subsystem */ }; /* Caller must verify that the css is not for root cgroup */ @@ -100,7 +100,7 @@ static inline void __css_get(struct cgroup_subsys_state *css, int count) static inline void css_get(struct cgroup_subsys_state *css) { /* We don't need to reference count the root state */ - if (!test_bit(CSS_ROOT, &css->flags)) + if (!(css->flags & CSS_ROOT)) __css_get(css, 1); } @@ -113,7 +113,7 @@ static inline void css_get(struct cgroup_subsys_state *css) extern bool __css_tryget(struct cgroup_subsys_state *css); static inline bool css_tryget(struct cgroup_subsys_state *css) { - if (test_bit(CSS_ROOT, &css->flags)) + if (css->flags & CSS_ROOT) return true; return __css_tryget(css); } @@ -126,7 +126,7 @@ static inline bool css_tryget(struct cgroup_subsys_state *css) extern void __css_put(struct cgroup_subsys_state *css); static inline void css_put(struct cgroup_subsys_state *css) { - if (!test_bit(CSS_ROOT, &css->flags)) + if (!(css->flags & CSS_ROOT)) __css_put(css); } -- cgit v1.2.3 From a31f2d3ff7fe20cbe2a143515a7d7c408b29dd0d Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 19 Nov 2012 08:13:37 -0800 Subject: cgroup: introduce CSS_ONLINE flag and on/offline_css() helpers New helpers on/offline_css() respectively wrap ->post_create() and ->pre_destroy() invocations. online_css() sets CSS_ONLINE after ->post_create() is complete and offline_css() invokes ->pre_destroy() iff CSS_ONLINE is set and clears it while also handling the temporary dropping of cgroup_mutex. This patch doesn't introduce any behavior change at the moment but will be used to improve cgroup_create() failure path and allow ->post_create() to fail. Signed-off-by: Tejun Heo Acked-by: Li Zefan --- include/linux/cgroup.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index a0fc64167129..f4a9c9836906 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -82,6 +82,7 @@ struct cgroup_subsys_state { /* bits in struct cgroup_subsys_state flags field */ enum { CSS_ROOT = (1 << 0), /* this CSS is the root of the subsystem */ + CSS_ONLINE = (1 << 1), /* between ->post_create() and ->pre_destroy() */ }; /* Caller must verify that the css is not for root cgroup */ -- cgit v1.2.3 From b1929db42f8a649d9a9e397119f628c27fd4021f Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 19 Nov 2012 08:13:38 -0800 Subject: cgroup: allow ->post_create() to fail There could be cases where controllers want to do initialization operations which may fail from ->post_create(). This patch makes ->post_create() return -errno to indicate failure and online_css() relay such failures. Signed-off-by: Tejun Heo Acked-by: Li Zefan Cc: Glauber Costa --- include/linux/cgroup.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index f4a9c9836906..03d8a92786da 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -440,7 +440,7 @@ int cgroup_taskset_size(struct cgroup_taskset *tset); struct cgroup_subsys { struct cgroup_subsys_state *(*create)(struct cgroup *cgrp); - void (*post_create)(struct cgroup *cgrp); + int (*post_create)(struct cgroup *cgrp); void (*pre_destroy)(struct cgroup *cgrp); void (*destroy)(struct cgroup *cgrp); int (*can_attach)(struct cgroup *cgrp, struct cgroup_taskset *tset); -- cgit v1.2.3 From 92fb97487a7e41b222c1417cabd1d1ab7cc3a48c Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 19 Nov 2012 08:13:38 -0800 Subject: cgroup: rename ->create/post_create/pre_destroy/destroy() to ->css_alloc/online/offline/free() Rename cgroup_subsys css lifetime related callbacks to better describe what their roles are. Also, update documentation. Signed-off-by: Tejun Heo Acked-by: Li Zefan --- include/linux/cgroup.h | 35 ++++++++++++++++++----------------- 1 file changed, 18 insertions(+), 17 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 03d8a92786da..7a2189ca8327 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -82,7 +82,7 @@ struct cgroup_subsys_state { /* bits in struct cgroup_subsys_state flags field */ enum { CSS_ROOT = (1 << 0), /* this CSS is the root of the subsystem */ - CSS_ONLINE = (1 << 1), /* between ->post_create() and ->pre_destroy() */ + CSS_ONLINE = (1 << 1), /* between ->css_online() and ->css_offline() */ }; /* Caller must verify that the css is not for root cgroup */ @@ -439,10 +439,11 @@ int cgroup_taskset_size(struct cgroup_taskset *tset); */ struct cgroup_subsys { - struct cgroup_subsys_state *(*create)(struct cgroup *cgrp); - int (*post_create)(struct cgroup *cgrp); - void (*pre_destroy)(struct cgroup *cgrp); - void (*destroy)(struct cgroup *cgrp); + struct cgroup_subsys_state *(*css_alloc)(struct cgroup *cgrp); + int (*css_online)(struct cgroup *cgrp); + void (*css_offline)(struct cgroup *cgrp); + void (*css_free)(struct cgroup *cgrp); + int (*can_attach)(struct cgroup *cgrp, struct cgroup_taskset *tset); void (*cancel_attach)(struct cgroup *cgrp, struct cgroup_taskset *tset); void (*attach)(struct cgroup *cgrp, struct cgroup_taskset *tset); @@ -541,13 +542,13 @@ static inline struct cgroup* task_cgroup(struct task_struct *task, * @cgroup: cgroup whose children to walk * * Walk @cgroup's children. Must be called under rcu_read_lock(). A child - * cgroup which hasn't finished ->post_create() or already has finished - * ->pre_destroy() may show up during traversal and it's each subsystem's + * cgroup which hasn't finished ->css_online() or already has finished + * ->css_offline() may show up during traversal and it's each subsystem's * responsibility to verify that each @pos is alive. * - * If a subsystem synchronizes against the parent in its ->post_create() - * and before starting iterating, a cgroup which finished ->post_create() - * is guaranteed to be visible in the future iterations. + * If a subsystem synchronizes against the parent in its ->css_online() and + * before starting iterating, a cgroup which finished ->css_online() is + * guaranteed to be visible in the future iterations. */ #define cgroup_for_each_child(pos, cgroup) \ list_for_each_entry_rcu(pos, &(cgroup)->children, sibling) @@ -561,19 +562,19 @@ struct cgroup *cgroup_next_descendant_pre(struct cgroup *pos, * @cgroup: cgroup whose descendants to walk * * Walk @cgroup's descendants. Must be called under rcu_read_lock(). A - * descendant cgroup which hasn't finished ->post_create() or already has - * finished ->pre_destroy() may show up during traversal and it's each + * descendant cgroup which hasn't finished ->css_online() or already has + * finished ->css_offline() may show up during traversal and it's each * subsystem's responsibility to verify that each @pos is alive. * - * If a subsystem synchronizes against the parent in its ->post_create() - * and before starting iterating, and synchronizes against @pos on each - * iteration, any descendant cgroup which finished ->post_create() is + * If a subsystem synchronizes against the parent in its ->css_online() and + * before starting iterating, and synchronizes against @pos on each + * iteration, any descendant cgroup which finished ->css_offline() is * guaranteed to be visible in the future iterations. * * In other words, the following guarantees that a descendant can't escape * state updates of its ancestors. * - * my_post_create(@cgrp) + * my_online(@cgrp) * { * Lock @cgrp->parent and @cgrp; * Inherit state from @cgrp->parent; @@ -606,7 +607,7 @@ struct cgroup *cgroup_next_descendant_pre(struct cgroup *pos, * iteration should lock and unlock both @pos->parent and @pos. * * Alternatively, a subsystem may choose to use a single global lock to - * synchronize ->post_create() and ->pre_destroy() against tree-walking + * synchronize ->css_online() and ->css_offline() against tree-walking * operations. */ #define cgroup_for_each_descendant_pre(pos, cgroup) \ -- cgit v1.2.3 From 2260e7fc1f18ad815324605c1ce7d5c6fd9b19a2 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 19 Nov 2012 08:13:38 -0800 Subject: cgroup: s/CGRP_CLONE_CHILDREN/CGRP_CPUSET_CLONE_CHILDREN/ clone_children is only meaningful for cpuset and will stay that way. Rename the flag to reflect that and update documentation. Also, drop clone_children() wrapper in cgroup.c. The thin wrapper is used only a few times and one of them will go away soon. Signed-off-by: Tejun Heo Acked-by: Serge E. Hallyn Acked-by: Li Zefan Cc: Glauber Costa --- include/linux/cgroup.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 7a2189ca8327..d2f82979f6c1 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -143,9 +143,11 @@ enum { /* Control Group requires release notifications to userspace */ CGRP_NOTIFY_ON_RELEASE, /* - * Clone cgroup values when creating a new child cgroup + * Clone the parent's configuration when creating a new child + * cpuset cgroup. For historical reasons, this option can be + * specified at mount time and thus is implemented here. */ - CGRP_CLONE_CHILDREN, + CGRP_CPUSET_CLONE_CHILDREN, }; struct cgroup { -- cgit v1.2.3 From 033fa1c5f5f73833598a0beb022c0048fb769dad Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 19 Nov 2012 08:13:39 -0800 Subject: cgroup, cpuset: remove cgroup_subsys->post_clone() Currently CGRP_CPUSET_CLONE_CHILDREN triggers ->post_clone(). Now that clone_children is cpuset specific, there's no reason to have this rather odd option activation mechanism in cgroup core. cpuset can check the flag from its ->css_allocate() and take the necessary action. Move cpuset_post_clone() logic to the end of cpuset_css_alloc() and remove cgroup_subsys->post_clone(). Loosely based on Glauber's "generalize post_clone into post_create" patch. Signed-off-by: Tejun Heo Original-patch-by: Glauber Costa Original-patch: <1351686554-22592-2-git-send-email-glommer@parallels.com> Acked-by: Serge E. Hallyn Acked-by: Li Zefan Cc: Glauber Costa --- include/linux/cgroup.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index d2f82979f6c1..c798997e5011 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -452,7 +452,6 @@ struct cgroup_subsys { void (*fork)(struct task_struct *task); void (*exit)(struct cgroup *cgrp, struct cgroup *old_cgrp, struct task_struct *task); - void (*post_clone)(struct cgroup *cgrp); void (*bind)(struct cgroup *root); int subsys_id; -- cgit v1.2.3 From 2abb74eaf6e73cb42e87bdc9e9c2535ce485e614 Mon Sep 17 00:00:00 2001 From: Jean-Christophe PLAGNIOL-VILLARD Date: Sat, 17 Nov 2012 23:05:06 +0100 Subject: atmel: move ATMEL_MAX_UART to platform_data/atmel.h Modify both AT91 and AVR32 platforms. Use 7 for it as the sam9260 or the sam9g25 have 7 of them DBGU included. Reported-by: Joachim Eastwood Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD Signed-off-by: Nicolas Ferre --- include/linux/platform_data/atmel.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/atmel.h b/include/linux/platform_data/atmel.h index dbd6d53cc270..6a293b7fff3b 100644 --- a/include/linux/platform_data/atmel.h +++ b/include/linux/platform_data/atmel.h @@ -19,6 +19,12 @@ #include #include +/* + * at91: 6 USARTs and one DBGU port (SAM9260) + * avr32: 4 + */ +#define ATMEL_MAX_UART 7 + /* USB Device */ struct at91_udc_data { int vbus_pin; /* high == host powering us */ -- cgit v1.2.3 From 0a950f65e1e64f4e82b4b5507773848ea88bcb8e Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 19 Nov 2012 09:02:12 -0800 Subject: cgroup: add cgroup->id With the introduction of generic cgroup hierarchy iterators, css_id is being phased out. It was unnecessarily complex, id'ing the wrong thing (cgroups need IDs, not CSSes) and has other oddities like not being available at ->css_alloc(). This patch adds cgroup->id, which is a simple per-hierarchy ida-allocated ID which is assigned before ->css_alloc() and released after ->css_free(). Signed-off-by: Tejun Heo Acked-by: Li Zefan Acked-by: Neil Horman --- include/linux/cgroup.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index c798997e5011..82cf9e6fc77b 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -159,6 +159,8 @@ struct cgroup { */ atomic_t count; + int id; /* ida allocated in-hierarchy ID */ + /* * We link our 'sibling' struct into our parent's 'children'. * Our children link their 'sibling' into our 'children'. -- cgit v1.2.3 From d2709c7ce4c513ab7f4ca9a106a930621811f2d3 Mon Sep 17 00:00:00 2001 From: David Howells Date: Mon, 19 Nov 2012 22:21:03 +0000 Subject: perf: Make perf build for x86 with UAPI disintegration applied Make perf build for x86 once the UAPI disintegration patches for that arch have been applied by adding the appropriate -I flags - in the right order - and then converting some #includes that use ../.. notation to find main kernel headerfiles to use and instead. Note that -Iarch/foo/include/uapi is present _before_ -Iarch/foo/include. This makes sure we get the userspace version of the pt_regs struct. Ideally, we wouldn't have the latter -I flag at all, but unfortunately we want asm/svm.h and asm/vmx.h in builtin-kvm.c and these aren't part of the UAPI - at least not for x86. I wonder if the bits outside of the __KERNEL__ guards *should* be transferred there. I note also that perf seems to do its dependency handling manually by listing all the header files it might want to use in LIB_H in the Makefile. Can this be changed to use -MD? Note that to do make this work, we need to export and UAPI disintegrate linux/hw_breakpoint.h, which I think should've been exported previously so that perf can access the bits. We have to do this in the same patch to maintain bisectability. Signed-off-by: David Howells --- include/linux/hw_breakpoint.h | 31 +------------------------------ 1 file changed, 1 insertion(+), 30 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hw_breakpoint.h b/include/linux/hw_breakpoint.h index 6ae9c631a1be..0464c85e63fd 100644 --- a/include/linux/hw_breakpoint.h +++ b/include/linux/hw_breakpoint.h @@ -1,35 +1,8 @@ #ifndef _LINUX_HW_BREAKPOINT_H #define _LINUX_HW_BREAKPOINT_H -enum { - HW_BREAKPOINT_LEN_1 = 1, - HW_BREAKPOINT_LEN_2 = 2, - HW_BREAKPOINT_LEN_4 = 4, - HW_BREAKPOINT_LEN_8 = 8, -}; - -enum { - HW_BREAKPOINT_EMPTY = 0, - HW_BREAKPOINT_R = 1, - HW_BREAKPOINT_W = 2, - HW_BREAKPOINT_RW = HW_BREAKPOINT_R | HW_BREAKPOINT_W, - HW_BREAKPOINT_X = 4, - HW_BREAKPOINT_INVALID = HW_BREAKPOINT_RW | HW_BREAKPOINT_X, -}; - -enum bp_type_idx { - TYPE_INST = 0, -#ifdef CONFIG_HAVE_MIXED_BREAKPOINTS_REGS - TYPE_DATA = 0, -#else - TYPE_DATA = 1, -#endif - TYPE_MAX -}; - -#ifdef __KERNEL__ - #include +#include #ifdef CONFIG_HAVE_HW_BREAKPOINT @@ -151,6 +124,4 @@ static inline struct arch_hw_breakpoint *counter_arch_bp(struct perf_event *bp) } #endif /* CONFIG_HAVE_HW_BREAKPOINT */ -#endif /* __KERNEL__ */ - #endif /* _LINUX_HW_BREAKPOINT_H */ -- cgit v1.2.3 From 50d69b5184169caeb85e082f627200da9b0e1677 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Tue, 13 Nov 2012 11:48:00 +0000 Subject: iio: Fix iio_buffer_register stub signature MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Match the iio_buffer_register stub signature up to the real function and make the second parameter const. This fixes a the following warnings if CONFIG_IIO_BUFFER is disabled: drivers/staging/iio/accel/adis16201_core.c: In function ‘adis16201_probe’: drivers/staging/iio/accel/adis16201_core.c:536: warning: passing argument 2 of ‘iio_buffer_register’ discards qualifiers from pointer target type drivers/staging/iio/accel/adis16203_core.c: In function ‘adis16203_probe’: drivers/staging/iio/accel/adis16203_core.c:468: warning: passing argument 2 of ‘iio_buffer_register’ discards qualifiers from pointer target type drivers/staging/iio/accel/adis16204_core.c: In function ‘adis16204_probe’: drivers/staging/iio/accel/adis16204_core.c:527: warning: passing argument 2 of ‘iio_buffer_register’ discards qualifiers from pointer target type drivers/staging/iio/accel/adis16209_core.c: In function ‘adis16209_probe’: drivers/staging/iio/accel/adis16209_core.c:542: warning: passing argument 2 of ‘iio_buffer_register’ discards qualifiers from pointer target type drivers/staging/iio/accel/adis16240_core.c: In function ‘adis16240_probe’: drivers/staging/iio/accel/adis16240_core.c:588: warning: passing argument 2 of ‘iio_buffer_register’ discards qualifiers from pointer target type Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- include/linux/iio/buffer.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h index 027040569180..f3eea18fdf46 100644 --- a/include/linux/iio/buffer.h +++ b/include/linux/iio/buffer.h @@ -195,7 +195,7 @@ bool iio_validate_scan_mask_onehot(struct iio_dev *indio_dev, #else /* CONFIG_IIO_BUFFER */ static inline int iio_buffer_register(struct iio_dev *indio_dev, - struct iio_chan_spec *channels, + const struct iio_chan_spec *channels, int num_channels) { return 0; -- cgit v1.2.3 From ec04cb048d79cd778c06e28f34395a46d774800d Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Tue, 13 Nov 2012 13:28:00 +0000 Subject: staging:iio: Move adis library out of staging Now that the adis library no longer depends on the sw_ring buffer implementation we can move it out of staging. While we are at it also sort the entries in the iio Kconfig and Makefile to be in alphabetical order. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- include/linux/iio/imu/adis.h | 186 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 186 insertions(+) create mode 100644 include/linux/iio/imu/adis.h (limited to 'include/linux') diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h new file mode 100644 index 000000000000..8c3304d44b97 --- /dev/null +++ b/include/linux/iio/imu/adis.h @@ -0,0 +1,186 @@ +/* + * Common library for ADIS16XXX devices + * + * Copyright 2012 Analog Devices Inc. + * Author: Lars-Peter Clausen + * + * Licensed under the GPL-2 or later. + */ + +#ifndef __IIO_ADIS_H__ +#define __IIO_ADIS_H__ + +#include +#include +#include + +#define ADIS_WRITE_REG(reg) (0x80 | (reg)) +#define ADIS_READ_REG(reg) (reg) + +/** + * struct adis_data - ADIS chip variant specific data + * @read_delay: SPI delay for read operations in us + * @write_delay: SPI delay for write operations in us + * @glob_cmd_reg: Register address of the GLOB_CMD register + * @msc_ctrl_reg: Register address of the MSC_CTRL register + * @diag_stat_reg: Register address of the DIAG_STAT register + * @status_error_msgs: Array of error messgaes + * @status_error_mask: + */ +struct adis_data { + unsigned int read_delay; + unsigned int write_delay; + + unsigned int glob_cmd_reg; + unsigned int msc_ctrl_reg; + unsigned int diag_stat_reg; + + unsigned int self_test_mask; + unsigned int startup_delay; + + const char * const *status_error_msgs; + unsigned int status_error_mask; +}; + +struct adis { + struct spi_device *spi; + struct iio_trigger *trig; + + const struct adis_data *data; + + struct mutex txrx_lock; + struct spi_message msg; + struct spi_transfer *xfer; + void *buffer; + + uint8_t tx[8] ____cacheline_aligned; + uint8_t rx[4]; +}; + +int adis_init(struct adis *adis, struct iio_dev *indio_dev, + struct spi_device *spi, const struct adis_data *data); +int adis_reset(struct adis *adis); + +int adis_write_reg_8(struct adis *adis, unsigned int reg, uint8_t val); +int adis_write_reg_16(struct adis *adis, unsigned int reg, uint16_t val); +int adis_read_reg_16(struct adis *adis, unsigned int reg, uint16_t *val); + +int adis_enable_irq(struct adis *adis, bool enable); +int adis_check_status(struct adis *adis); + +int adis_initial_startup(struct adis *adis); + +int adis_single_conversion(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, unsigned int error_mask, + int *val); + +#define ADIS_VOLTAGE_CHAN(addr, si, chan, name, bits) { \ + .type = IIO_VOLTAGE, \ + .indexed = 1, \ + .channel = (chan), \ + .extend_name = name, \ + .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \ + IIO_CHAN_INFO_SCALE_SEPARATE_BIT, \ + .address = (addr), \ + .scan_index = (si), \ + .scan_type = { \ + .sign = 'u', \ + .realbits = (bits), \ + .storagebits = 16, \ + .endianness = IIO_BE, \ + }, \ +} + +#define ADIS_SUPPLY_CHAN(addr, si, bits) \ + ADIS_VOLTAGE_CHAN(addr, si, 0, "supply", bits) + +#define ADIS_AUX_ADC_CHAN(addr, si, bits) \ + ADIS_VOLTAGE_CHAN(addr, si, 1, NULL, bits) + +#define ADIS_TEMP_CHAN(addr, si, bits) { \ + .type = IIO_TEMP, \ + .indexed = 1, \ + .channel = 0, \ + .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \ + IIO_CHAN_INFO_SCALE_SEPARATE_BIT | \ + IIO_CHAN_INFO_OFFSET_SEPARATE_BIT, \ + .address = (addr), \ + .scan_index = (si), \ + .scan_type = { \ + .sign = 'u', \ + .realbits = (bits), \ + .storagebits = 16, \ + .endianness = IIO_BE, \ + }, \ +} + +#define ADIS_MOD_CHAN(_type, mod, addr, si, info, bits) { \ + .type = (_type), \ + .modified = 1, \ + .channel2 = IIO_MOD_ ## mod, \ + .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \ + IIO_CHAN_INFO_SCALE_SHARED_BIT | \ + info, \ + .address = (addr), \ + .scan_index = (si), \ + .scan_type = { \ + .sign = 's', \ + .realbits = (bits), \ + .storagebits = 16, \ + .endianness = IIO_BE, \ + }, \ +} + +#define ADIS_ACCEL_CHAN(mod, addr, si, info, bits) \ + ADIS_MOD_CHAN(IIO_ACCEL, mod, addr, si, info, bits) + +#define ADIS_GYRO_CHAN(mod, addr, si, info, bits) \ + ADIS_MOD_CHAN(IIO_ANGL_VEL, mod, addr, si, info, bits) + +#define ADIS_INCLI_CHAN(mod, addr, si, info, bits) \ + ADIS_MOD_CHAN(IIO_INCLI, mod, addr, si, info, bits) + +#define ADIS_ROT_CHAN(mod, addr, si, info, bits) \ + ADIS_MOD_CHAN(IIO_ROT, mod, addr, si, info, bits) + +#ifdef CONFIG_IIO_ADIS_LIB_BUFFER + +int adis_setup_buffer_and_trigger(struct adis *adis, + struct iio_dev *indio_dev, irqreturn_t (*trigger_handler)(int, void *)); +void adis_cleanup_buffer_and_trigger(struct adis *adis, + struct iio_dev *indio_dev); + +int adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev); +void adis_remove_trigger(struct adis *adis); + +int adis_update_scan_mode(struct iio_dev *indio_dev, + const unsigned long *scan_mask); + +#else /* CONFIG_IIO_BUFFER */ + +static inline int adis_setup_buffer_and_trigger(struct adis *adis, + struct iio_dev *indio_dev, irqreturn_t (*trigger_handler)(int, void *)) +{ + return 0; +} + +static inline void adis_cleanup_buffer_and_trigger(struct adis *adis, + struct iio_dev *indio_dev) +{ +} + +static inline int adis_probe_trigger(struct adis *adis, + struct iio_dev *indio_dev) +{ + return 0; +} + +static inline void adis_remove_trigger(struct adis *adis) +{ +} + +#define adis_update_scan_mode NULL + +#endif /* CONFIG_IIO_BUFFER */ + +#endif -- cgit v1.2.3 From 709ab36e9559ff5c7df6e6f2d9e3c4a4410f8d49 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Sat, 17 Nov 2012 11:42:59 +0000 Subject: staging:iio: Move the ad7298 driver out of staging The driver does not expose any custom API to userspace and none of the standard static code checker tools report any issues, so move it out of staging. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- include/linux/platform_data/ad7298.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 include/linux/platform_data/ad7298.h (limited to 'include/linux') diff --git a/include/linux/platform_data/ad7298.h b/include/linux/platform_data/ad7298.h new file mode 100644 index 000000000000..fbf8adf1363a --- /dev/null +++ b/include/linux/platform_data/ad7298.h @@ -0,0 +1,20 @@ +/* + * AD7298 SPI ADC driver + * + * Copyright 2011 Analog Devices Inc. + * + * Licensed under the GPL-2. + */ + +#ifndef __LINUX_PLATFORM_DATA_AD7298_H__ +#define __LINUX_PLATFORM_DATA_AD7298_H__ + +/** + * struct ad7298_platform_data - Platform data for the ad7298 ADC driver + * @ext_ref: Whether to use an external reference voltage. + **/ +struct ad7298_platform_data { + bool ext_ref; +}; + +#endif /* IIO_ADC_AD7298_H_ */ -- cgit v1.2.3 From d962ec4922493da48bb0fd33b26200de039b0d75 Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Wed, 24 Oct 2012 11:45:12 -0700 Subject: NFC: Remove unused details from pn544.h header file The majority of the defines and structures from pn544.h are no longer in use. So just remove them. Signed-off-by: Marcel Holtmann Signed-off-by: Samuel Ortiz --- include/linux/nfc/pn544.h | 60 ----------------------------------------------- 1 file changed, 60 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfc/pn544.h b/include/linux/nfc/pn544.h index 9890bbaf4328..713bfd703342 100644 --- a/include/linux/nfc/pn544.h +++ b/include/linux/nfc/pn544.h @@ -25,65 +25,6 @@ #include -#define PN544_DRIVER_NAME "pn544" -#define PN544_MAXWINDOW_SIZE 7 -#define PN544_WINDOW_SIZE 4 -#define PN544_RETRIES 10 -#define PN544_MAX_I2C_TRANSFER 0x0400 -#define PN544_MSG_MAX_SIZE 0x21 /* at normal HCI mode */ - -/* ioctl */ -#define PN544_CHAR_BASE 'P' -#define PN544_IOR(num, dtype) _IOR(PN544_CHAR_BASE, num, dtype) -#define PN544_IOW(num, dtype) _IOW(PN544_CHAR_BASE, num, dtype) -#define PN544_GET_FW_MODE PN544_IOW(1, unsigned int) -#define PN544_SET_FW_MODE PN544_IOW(2, unsigned int) -#define PN544_GET_DEBUG PN544_IOW(3, unsigned int) -#define PN544_SET_DEBUG PN544_IOW(4, unsigned int) - -/* Timing restrictions (ms) */ -#define PN544_RESETVEN_TIME 30 /* 7 */ -#define PN544_PVDDVEN_TIME 0 -#define PN544_VBATVEN_TIME 0 -#define PN544_GPIO4VEN_TIME 0 -#define PN544_WAKEUP_ACK 5 -#define PN544_WAKEUP_GUARD (PN544_WAKEUP_ACK + 1) -#define PN544_INACTIVITY_TIME 1000 -#define PN544_INTERFRAME_DELAY 200 /* us */ -#define PN544_BAUDRATE_CHANGE 150 /* us */ - -/* Debug bits */ -#define PN544_DEBUG_BUF 0x01 -#define PN544_DEBUG_READ 0x02 -#define PN544_DEBUG_WRITE 0x04 -#define PN544_DEBUG_IRQ 0x08 -#define PN544_DEBUG_CALLS 0x10 -#define PN544_DEBUG_MODE 0x20 - -/* Normal (HCI) mode */ -#define PN544_LLC_HCI_OVERHEAD 3 /* header + crc (to length) */ -#define PN544_LLC_MIN_SIZE (1 + PN544_LLC_HCI_OVERHEAD) /* length + */ -#define PN544_LLC_MAX_DATA (PN544_MSG_MAX_SIZE - 2) -#define PN544_LLC_MAX_HCI_SIZE (PN544_LLC_MAX_DATA - 2) - -struct pn544_llc_packet { - unsigned char length; /* of rest of packet */ - unsigned char header; - unsigned char data[PN544_LLC_MAX_DATA]; /* includes crc-ccitt */ -}; - -/* Firmware upgrade mode */ -#define PN544_FW_HEADER_SIZE 3 -/* max fw transfer is 1024bytes, but I2C limits it to 0xC0 */ -#define PN544_MAX_FW_DATA (PN544_MAX_I2C_TRANSFER - PN544_FW_HEADER_SIZE) - -struct pn544_fw_packet { - unsigned char command; /* status in answer */ - unsigned char length[2]; /* big-endian order (msf) */ - unsigned char data[PN544_MAX_FW_DATA]; -}; - -#ifdef __KERNEL__ enum { NFC_GPIO_ENABLE, NFC_GPIO_FW_RESET, @@ -99,6 +40,5 @@ struct pn544_nfc_platform_data { void (*disable) (void); int (*get_gpio)(int type); }; -#endif /* __KERNEL__ */ #endif /* _PN544_H_ */ -- cgit v1.2.3 From 61cdb01853c99e78d8b54db1b77e524c0dce585d Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Wed, 24 Oct 2012 11:45:26 -0700 Subject: NFC: Move pn544.h to linux/platform_data/ The pn544.h just provides the platform data struct and defines and nothing else. So move it to to linux/platform_data/ now. Signed-off-by: Marcel Holtmann Signed-off-by: Samuel Ortiz --- include/linux/nfc/pn544.h | 44 ------------------------------------- include/linux/platform_data/pn544.h | 44 +++++++++++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+), 44 deletions(-) delete mode 100644 include/linux/nfc/pn544.h create mode 100644 include/linux/platform_data/pn544.h (limited to 'include/linux') diff --git a/include/linux/nfc/pn544.h b/include/linux/nfc/pn544.h deleted file mode 100644 index 713bfd703342..000000000000 --- a/include/linux/nfc/pn544.h +++ /dev/null @@ -1,44 +0,0 @@ -/* - * Driver include for the PN544 NFC chip. - * - * Copyright (C) Nokia Corporation - * - * Author: Jari Vanhala - * Contact: Matti Aaltoenn - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#ifndef _PN544_H_ -#define _PN544_H_ - -#include - -enum { - NFC_GPIO_ENABLE, - NFC_GPIO_FW_RESET, - NFC_GPIO_IRQ -}; - -/* board config */ -struct pn544_nfc_platform_data { - int (*request_resources) (struct i2c_client *client); - void (*free_resources) (void); - void (*enable) (int fw); - int (*test) (void); - void (*disable) (void); - int (*get_gpio)(int type); -}; - -#endif /* _PN544_H_ */ diff --git a/include/linux/platform_data/pn544.h b/include/linux/platform_data/pn544.h new file mode 100644 index 000000000000..713bfd703342 --- /dev/null +++ b/include/linux/platform_data/pn544.h @@ -0,0 +1,44 @@ +/* + * Driver include for the PN544 NFC chip. + * + * Copyright (C) Nokia Corporation + * + * Author: Jari Vanhala + * Contact: Matti Aaltoenn + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef _PN544_H_ +#define _PN544_H_ + +#include + +enum { + NFC_GPIO_ENABLE, + NFC_GPIO_FW_RESET, + NFC_GPIO_IRQ +}; + +/* board config */ +struct pn544_nfc_platform_data { + int (*request_resources) (struct i2c_client *client); + void (*free_resources) (void); + void (*enable) (int fw); + int (*test) (void); + void (*disable) (void); + int (*get_gpio)(int type); +}; + +#endif /* _PN544_H_ */ -- cgit v1.2.3 From 4b20db3de8dab005b07c74161cb041db8c5ff3a7 Mon Sep 17 00:00:00 2001 From: Thomas Hellstrom Date: Tue, 6 Nov 2012 11:31:49 +0000 Subject: kref: Implement kref_get_unless_zero v3 This function is intended to simplify locking around refcounting for objects that can be looked up from a lookup structure, and which are removed from that lookup structure in the object destructor. Operations on such objects require at least a read lock around lookup + kref_get, and a write lock around kref_put + remove from lookup structure. Furthermore, RCU implementations become extremely tricky. With a lookup followed by a kref_get_unless_zero *with return value check* locking in the kref_put path can be deferred to the actual removal from the lookup structure and RCU lookups become trivial. v2: Formatting fixes. v3: Invert the return value. Signed-off-by: Thomas Hellstrom Signed-off-by: Dave Airlie --- include/linux/kref.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kref.h b/include/linux/kref.h index 65af6887872f..4972e6e9ca93 100644 --- a/include/linux/kref.h +++ b/include/linux/kref.h @@ -111,4 +111,25 @@ static inline int kref_put_mutex(struct kref *kref, } return 0; } + +/** + * kref_get_unless_zero - Increment refcount for object unless it is zero. + * @kref: object. + * + * Return non-zero if the increment succeeded. Otherwise return 0. + * + * This function is intended to simplify locking around refcounting for + * objects that can be looked up from a lookup structure, and which are + * removed from that lookup structure in the object destructor. + * Operations on such objects require at least a read lock around + * lookup + kref_get, and a write lock around kref_put + remove from lookup + * structure. Furthermore, RCU implementations become extremely tricky. + * With a lookup followed by a kref_get_unless_zero *with return value check* + * locking in the kref_put path can be deferred to the actual removal from + * the lookup structure and RCU lookups become trivial. + */ +static inline int __must_check kref_get_unless_zero(struct kref *kref) +{ + return atomic_add_unless(&kref->refcount, 1, 0); +} #endif /* _KREF_H_ */ -- cgit v1.2.3 From e09651fcc295a7dc802f38d9494f5b860dd90bca Mon Sep 17 00:00:00 2001 From: Nishanth Menon Date: Mon, 29 Oct 2012 08:02:23 -0500 Subject: PM / devfreq: documentation cleanups for devfreq header struct parameters need to have ':' in documentation for scripts/kernel-doc to parse appropriately. Fix the errors reported by: ./scripts/kernel-doc include/linux/devfreq.h >/dev/null Cc: Rajagopal Venkat Cc: MyungJoo Ham Cc: Kyungmin Park Cc: "Rafael J. Wysocki" Cc: Kevin Hilman Cc: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Nishanth Menon Acked-by: Randy Dunlap Acked-by: MyungJoo Ham Signed-off-by: MyungJoo Ham --- include/linux/devfreq.h | 54 ++++++++++++++++++++++++------------------------- 1 file changed, 27 insertions(+), 27 deletions(-) (limited to 'include/linux') diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h index 7e2e2ea4a70f..1461fb2355ad 100644 --- a/include/linux/devfreq.h +++ b/include/linux/devfreq.h @@ -25,12 +25,12 @@ struct devfreq; * struct devfreq_dev_status - Data given from devfreq user device to * governors. Represents the performance * statistics. - * @total_time The total time represented by this instance of + * @total_time: The total time represented by this instance of * devfreq_dev_status - * @busy_time The time that the device was working among the + * @busy_time: The time that the device was working among the * total_time. - * @current_frequency The operating frequency. - * @private_data An entry not specified by the devfreq framework. + * @current_frequency: The operating frequency. + * @private_data: An entry not specified by the devfreq framework. * A device and a specific governor may have their * own protocol with private_data. However, because * this is governor-specific, a governor using this @@ -54,21 +54,21 @@ struct devfreq_dev_status { /** * struct devfreq_dev_profile - Devfreq's user device profile - * @initial_freq The operating frequency when devfreq_add_device() is + * @initial_freq: The operating frequency when devfreq_add_device() is * called. - * @polling_ms The polling interval in ms. 0 disables polling. - * @target The device should set its operating frequency at + * @polling_ms: The polling interval in ms. 0 disables polling. + * @target: The device should set its operating frequency at * freq or lowest-upper-than-freq value. If freq is * higher than any operable frequency, set maximum. * Before returning, target function should set * freq at the current frequency. * The "flags" parameter's possible values are * explained above with "DEVFREQ_FLAG_*" macros. - * @get_dev_status The device should provide the current performance + * @get_dev_status: The device should provide the current performance * status to devfreq, which is used by governors. - * @get_cur_freq The device should provide the current frequency + * @get_cur_freq: The device should provide the current frequency * at which it is operating. - * @exit An optional callback that is called when devfreq + * @exit: An optional callback that is called when devfreq * is removing the devfreq object due to error or * from devfreq_remove_device() call. If the user * has registered devfreq->nb at a notifier-head, @@ -87,14 +87,14 @@ struct devfreq_dev_profile { /** * struct devfreq_governor - Devfreq policy governor - * @name Governor's name - * @get_target_freq Returns desired operating frequency for the device. + * @name: Governor's name + * @get_target_freq: Returns desired operating frequency for the device. * Basically, get_target_freq will run * devfreq_dev_profile.get_dev_status() to get the * status of the device (load = busy_time / total_time). * If no_central_polling is set, this callback is called * only with update_devfreq() notified by OPP. - * @event_handler Callback for devfreq core framework to notify events + * @event_handler: Callback for devfreq core framework to notify events * to governors. Events include per device governor * init and exit, opp changes out of devfreq, suspend * and resume of per device devfreq during device idle. @@ -110,23 +110,23 @@ struct devfreq_governor { /** * struct devfreq - Device devfreq structure - * @node list node - contains the devices with devfreq that have been + * @node: list node - contains the devices with devfreq that have been * registered. - * @lock a mutex to protect accessing devfreq. - * @dev device registered by devfreq class. dev.parent is the device + * @lock: a mutex to protect accessing devfreq. + * @dev: device registered by devfreq class. dev.parent is the device * using devfreq. - * @profile device-specific devfreq profile - * @governor method how to choose frequency based on the usage. - * @nb notifier block used to notify devfreq object that it should + * @profile: device-specific devfreq profile + * @governor: method how to choose frequency based on the usage. + * @nb: notifier block used to notify devfreq object that it should * reevaluate operable frequencies. Devfreq users may use * devfreq.nb to the corresponding register notifier call chain. - * @work delayed work for load monitoring. - * @previous_freq previously configured frequency value. - * @data Private data of the governor. The devfreq framework does not + * @work: delayed work for load monitoring. + * @previous_freq: previously configured frequency value. + * @data: Private data of the governor. The devfreq framework does not * touch this. - * @min_freq Limit minimum frequency requested by user (0: none) - * @max_freq Limit maximum frequency requested by user (0: none) - * @stop_polling devfreq polling status of a device. + * @min_freq: Limit minimum frequency requested by user (0: none) + * @max_freq: Limit maximum frequency requested by user (0: none) + * @stop_polling: devfreq polling status of a device. * * This structure stores the devfreq information for a give device. * @@ -186,9 +186,9 @@ extern const struct devfreq_governor devfreq_simple_ondemand; /** * struct devfreq_simple_ondemand_data - void *data fed to struct devfreq * and devfreq_add_device - * @ upthreshold If the load is over this value, the frequency jumps. + * @upthreshold: If the load is over this value, the frequency jumps. * Specify 0 to use the default. Valid value = 0 to 100. - * @ downdifferential If the load is under upthreshold - downdifferential, + * @downdifferential: If the load is under upthreshold - downdifferential, * the governor may consider slowing the frequency down. * Specify 0 to use the default. Valid value = 0 to 100. * downdifferential < upthreshold must hold. -- cgit v1.2.3 From d851718f65d646c5033a28fa60631440c6dc0d4f Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Thu, 8 Nov 2012 18:39:41 +0900 Subject: extcon: Add missing header file to extcon.h This patch add missing header file(sysfs.h/device.h) to extcon.h because 'struct extcon_dev' define attribute field(attr_g_muex/ attrs_muex/d_attrs_mues) and device_type field(extcon_dev_type). Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- include/linux/extcon.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/extcon.h b/include/linux/extcon.h index 2c26c14cd710..54c00ce9ce7a 100644 --- a/include/linux/extcon.h +++ b/include/linux/extcon.h @@ -23,7 +23,9 @@ #ifndef __LINUX_EXTCON_H__ #define __LINUX_EXTCON_H__ +#include #include +#include #define SUPPORTED_CABLE_MAX 32 #define CABLE_NAME_MAX 30 -- cgit v1.2.3 From e552bbaf5b987f57c43e6981a452b8a3c700b1ae Mon Sep 17 00:00:00 2001 From: Jonghwa Lee Date: Thu, 23 Aug 2012 20:00:46 +0900 Subject: PM / devfreq: Add sysfs node for representing frequency transition information. This patch adds sysfs node which can be used to get information of frequency transition. It represents transition table which contains total number of transition of each freqeuncy state and time spent. It is inspired CPUFREQ's status driver. Signed-off-by: Jonghwa Lee [Added Documentation/ABI entry, updated kernel-doc, and resolved merge conflict] Signed-off-by: MyungJoo Ham --- include/linux/devfreq.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/linux') diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h index 1461fb2355ad..bc35c4aee6a3 100644 --- a/include/linux/devfreq.h +++ b/include/linux/devfreq.h @@ -73,6 +73,8 @@ struct devfreq_dev_status { * from devfreq_remove_device() call. If the user * has registered devfreq->nb at a notifier-head, * this is the time to unregister it. + * @freq_table: Optional list of frequencies to support statistics. + * @max_state: The size of freq_table. */ struct devfreq_dev_profile { unsigned long initial_freq; @@ -83,6 +85,9 @@ struct devfreq_dev_profile { struct devfreq_dev_status *stat); int (*get_cur_freq)(struct device *dev, unsigned long *freq); void (*exit)(struct device *dev); + + unsigned int *freq_table; + unsigned int max_state; }; /** @@ -127,6 +132,10 @@ struct devfreq_governor { * @min_freq: Limit minimum frequency requested by user (0: none) * @max_freq: Limit maximum frequency requested by user (0: none) * @stop_polling: devfreq polling status of a device. + * @total_trans: Number of devfreq transitions + * @trans_table: Statistics of devfreq transitions + * @time_in_state: Statistics of devfreq states + * @last_stat_updated: The last time stat updated * * This structure stores the devfreq information for a give device. * @@ -153,6 +162,12 @@ struct devfreq { unsigned long min_freq; unsigned long max_freq; bool stop_polling; + + /* information for device freqeuncy transition */ + unsigned int total_trans; + unsigned int *trans_table; + unsigned long *time_in_state; + unsigned long last_stat_updated; }; #if defined(CONFIG_PM_DEVFREQ) -- cgit v1.2.3 From 31974361761b18e07e821d3b262e34f1a2d105cb Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Tue, 20 Nov 2012 16:38:17 +0800 Subject: ASoC: atmel-ssc: add phybase in device structure Useful for future dmaengine use. Signed-off-by: Nicolas Ferre Signed-off-by: Mark Brown --- include/linux/atmel-ssc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/atmel-ssc.h b/include/linux/atmel-ssc.h index 1ca0e3292bc9..deb0ae58b99b 100644 --- a/include/linux/atmel-ssc.h +++ b/include/linux/atmel-ssc.h @@ -11,6 +11,7 @@ struct atmel_ssc_platform_data { struct ssc_device { struct list_head list; + resource_size_t phybase; void __iomem *regs; struct platform_device *pdev; struct atmel_ssc_platform_data *pdata; -- cgit v1.2.3 From 3aa173b8db200bb96354481acc0a5b9e123119fe Mon Sep 17 00:00:00 2001 From: Nishanth Menon Date: Mon, 29 Oct 2012 15:01:43 -0500 Subject: PM / devfreq: provide hooks for governors to be registered Add devfreq_add_governor and devfreq_remove_governor which can be invoked by governors to register with devfreq. This sets up the stage to dynamically switch governors and allow governors to be dynamically loaded as well. Cc: Rajagopal Venkat Cc: MyungJoo Ham Cc: Kyungmin Park Cc: "Rafael J. Wysocki" Cc: Kevin Hilman Cc: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Nishanth Menon Acked-by: MyungJoo Ham --- include/linux/devfreq.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h index bc35c4aee6a3..6484a3f8dda8 100644 --- a/include/linux/devfreq.h +++ b/include/linux/devfreq.h @@ -92,6 +92,7 @@ struct devfreq_dev_profile { /** * struct devfreq_governor - Devfreq policy governor + * @node: list node - contains registered devfreq governors * @name: Governor's name * @get_target_freq: Returns desired operating frequency for the device. * Basically, get_target_freq will run @@ -107,6 +108,8 @@ struct devfreq_dev_profile { * Note that the callbacks are called with devfreq->lock locked by devfreq. */ struct devfreq_governor { + struct list_head node; + const char name[DEVFREQ_NAME_LEN]; int (*get_target_freq)(struct devfreq *this, unsigned long *freq); int (*event_handler)(struct devfreq *devfreq, -- cgit v1.2.3 From 1b5c1be2c88e8445a20fa1929e26c37e7ca8c926 Mon Sep 17 00:00:00 2001 From: Nishanth Menon Date: Mon, 29 Oct 2012 15:01:45 -0500 Subject: PM / devfreq: map devfreq drivers to governor using name Allow devfreq drivers to register a preferred governor name and when the devfreq governor loads itself at a later point required drivers are managed appropriately, at the time of unload of a devfreq governor, stop managing those drivers as well. Since the governor structures do not need to be exposed anymore, remove the definitions and make them static NOTE: devfreq_list_lock is now used to protect governor start and stop - as this allows us to protect governors and devfreq with the proper dependencies as needed. As part of this change, change the registration of exynos bus driver to request for ondemand using the governor name. Cc: Rajagopal Venkat Cc: MyungJoo Ham Cc: Kyungmin Park Cc: "Rafael J. Wysocki" Cc: Kevin Hilman Cc: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Nishanth Menon [Merge conflict resolved by MyungJoo Ham] Signed-off-by: MyungJoo Ham --- include/linux/devfreq.h | 21 ++++----------------- 1 file changed, 4 insertions(+), 17 deletions(-) (limited to 'include/linux') diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h index 6484a3f8dda8..235248cb2c93 100644 --- a/include/linux/devfreq.h +++ b/include/linux/devfreq.h @@ -125,6 +125,7 @@ struct devfreq_governor { * using devfreq. * @profile: device-specific devfreq profile * @governor: method how to choose frequency based on the usage. + * @governor_name: devfreq governor name for use with this devfreq * @nb: notifier block used to notify devfreq object that it should * reevaluate operable frequencies. Devfreq users may use * devfreq.nb to the corresponding register notifier call chain. @@ -155,6 +156,7 @@ struct devfreq { struct device dev; struct devfreq_dev_profile *profile; const struct devfreq_governor *governor; + char governor_name[DEVFREQ_NAME_LEN]; struct notifier_block nb; struct delayed_work work; @@ -176,7 +178,7 @@ struct devfreq { #if defined(CONFIG_PM_DEVFREQ) extern struct devfreq *devfreq_add_device(struct device *dev, struct devfreq_dev_profile *profile, - const struct devfreq_governor *governor, + const char *governor_name, void *data); extern int devfreq_remove_device(struct devfreq *devfreq); extern int devfreq_suspend_device(struct devfreq *devfreq); @@ -190,17 +192,7 @@ extern int devfreq_register_opp_notifier(struct device *dev, extern int devfreq_unregister_opp_notifier(struct device *dev, struct devfreq *devfreq); -#ifdef CONFIG_DEVFREQ_GOV_POWERSAVE -extern const struct devfreq_governor devfreq_powersave; -#endif -#ifdef CONFIG_DEVFREQ_GOV_PERFORMANCE -extern const struct devfreq_governor devfreq_performance; -#endif -#ifdef CONFIG_DEVFREQ_GOV_USERSPACE -extern const struct devfreq_governor devfreq_userspace; -#endif #ifdef CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND -extern const struct devfreq_governor devfreq_simple_ondemand; /** * struct devfreq_simple_ondemand_data - void *data fed to struct devfreq * and devfreq_add_device @@ -223,7 +215,7 @@ struct devfreq_simple_ondemand_data { #else /* !CONFIG_PM_DEVFREQ */ static struct devfreq *devfreq_add_device(struct device *dev, struct devfreq_dev_profile *profile, - struct devfreq_governor *governor, + const char *governor_name, void *data) { return NULL; @@ -262,11 +254,6 @@ static int devfreq_unregister_opp_notifier(struct device *dev, return -EINVAL; } -#define devfreq_powersave NULL -#define devfreq_performance NULL -#define devfreq_userspace NULL -#define devfreq_simple_ondemand NULL - #endif /* CONFIG_PM_DEVFREQ */ #endif /* __LINUX_DEVFREQ_H__ */ -- cgit v1.2.3 From 43c1af0f4861b721def8c67ed6af2a69a4efcca3 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Tue, 13 Nov 2012 19:33:57 +0530 Subject: mfd: tps65910: Use regmap irq framework for interrupt support Implement irq support of tps65910 with regmap irq framework in place of implementing locally. This reduces the code size significantly and easy to maintain. Signed-off-by: Laxman Dewangan Reviewed-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/tps65910.h | 139 ++++++++++++++++++++++++++++++------------- 1 file changed, 99 insertions(+), 40 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/tps65910.h b/include/linux/mfd/tps65910.h index 02e894f3ff45..b564ac29590a 100644 --- a/include/linux/mfd/tps65910.h +++ b/include/linux/mfd/tps65910.h @@ -572,6 +572,49 @@ #define SPARE_SPARE_MASK 0xFF #define SPARE_SPARE_SHIFT 0 +#define TPS65910_INT_STS_RTC_PERIOD_IT_MASK 0x80 +#define TPS65910_INT_STS_RTC_PERIOD_IT_SHIFT 7 +#define TPS65910_INT_STS_RTC_ALARM_IT_MASK 0x40 +#define TPS65910_INT_STS_RTC_ALARM_IT_SHIFT 6 +#define TPS65910_INT_STS_HOTDIE_IT_MASK 0x20 +#define TPS65910_INT_STS_HOTDIE_IT_SHIFT 5 +#define TPS65910_INT_STS_PWRHOLD_F_IT_MASK 0x10 +#define TPS65910_INT_STS_PWRHOLD_F_IT_SHIFT 4 +#define TPS65910_INT_STS_PWRON_LP_IT_MASK 0x08 +#define TPS65910_INT_STS_PWRON_LP_IT_SHIFT 3 +#define TPS65910_INT_STS_PWRON_IT_MASK 0x04 +#define TPS65910_INT_STS_PWRON_IT_SHIFT 2 +#define TPS65910_INT_STS_VMBHI_IT_MASK 0x02 +#define TPS65910_INT_STS_VMBHI_IT_SHIFT 1 +#define TPS65910_INT_STS_VMBDCH_IT_MASK 0x01 +#define TPS65910_INT_STS_VMBDCH_IT_SHIFT 0 + +#define TPS65910_INT_MSK_RTC_PERIOD_IT_MSK_MASK 0x80 +#define TPS65910_INT_MSK_RTC_PERIOD_IT_MSK_SHIFT 7 +#define TPS65910_INT_MSK_RTC_ALARM_IT_MSK_MASK 0x40 +#define TPS65910_INT_MSK_RTC_ALARM_IT_MSK_SHIFT 6 +#define TPS65910_INT_MSK_HOTDIE_IT_MSK_MASK 0x20 +#define TPS65910_INT_MSK_HOTDIE_IT_MSK_SHIFT 5 +#define TPS65910_INT_MSK_PWRHOLD_IT_MSK_MASK 0x10 +#define TPS65910_INT_MSK_PWRHOLD_IT_MSK_SHIFT 4 +#define TPS65910_INT_MSK_PWRON_LP_IT_MSK_MASK 0x08 +#define TPS65910_INT_MSK_PWRON_LP_IT_MSK_SHIFT 3 +#define TPS65910_INT_MSK_PWRON_IT_MSK_MASK 0x04 +#define TPS65910_INT_MSK_PWRON_IT_MSK_SHIFT 2 +#define TPS65910_INT_MSK_VMBHI_IT_MSK_MASK 0x02 +#define TPS65910_INT_MSK_VMBHI_IT_MSK_SHIFT 1 +#define TPS65910_INT_MSK_VMBDCH_IT_MSK_MASK 0x01 +#define TPS65910_INT_MSK_VMBDCH_IT_MSK_SHIFT 0 + +#define TPS65910_INT_STS2_GPIO0_F_IT_SHIFT 2 +#define TPS65910_INT_STS2_GPIO0_F_IT_MASK 0x02 +#define TPS65910_INT_STS2_GPIO0_R_IT_SHIFT 1 +#define TPS65910_INT_STS2_GPIO0_R_IT_MASK 0x01 + +#define TPS65910_INT_MSK2_GPIO0_F_IT_MSK_SHIFT 2 +#define TPS65910_INT_MSK2_GPIO0_F_IT_MSK_MASK 0x02 +#define TPS65910_INT_MSK2_GPIO0_R_IT_MSK_SHIFT 1 +#define TPS65910_INT_MSK2_GPIO0_R_IT_MSK_MASK 0x01 /*Register INT_STS (0x80) register.RegisterDescription */ #define INT_STS_RTC_PERIOD_IT_MASK 0x80 @@ -580,16 +623,16 @@ #define INT_STS_RTC_ALARM_IT_SHIFT 6 #define INT_STS_HOTDIE_IT_MASK 0x20 #define INT_STS_HOTDIE_IT_SHIFT 5 -#define INT_STS_PWRHOLD_IT_MASK 0x10 -#define INT_STS_PWRHOLD_IT_SHIFT 4 +#define INT_STS_PWRHOLD_R_IT_MASK 0x10 +#define INT_STS_PWRHOLD_R_IT_SHIFT 4 #define INT_STS_PWRON_LP_IT_MASK 0x08 #define INT_STS_PWRON_LP_IT_SHIFT 3 #define INT_STS_PWRON_IT_MASK 0x04 #define INT_STS_PWRON_IT_SHIFT 2 #define INT_STS_VMBHI_IT_MASK 0x02 #define INT_STS_VMBHI_IT_SHIFT 1 -#define INT_STS_VMBDCH_IT_MASK 0x01 -#define INT_STS_VMBDCH_IT_SHIFT 0 +#define INT_STS_PWRHOLD_F_IT_MASK 0x01 +#define INT_STS_PWRHOLD_F_IT_SHIFT 0 /*Register INT_MSK (0x80) register.RegisterDescription */ @@ -599,16 +642,16 @@ #define INT_MSK_RTC_ALARM_IT_MSK_SHIFT 6 #define INT_MSK_HOTDIE_IT_MSK_MASK 0x20 #define INT_MSK_HOTDIE_IT_MSK_SHIFT 5 -#define INT_MSK_PWRHOLD_IT_MSK_MASK 0x10 -#define INT_MSK_PWRHOLD_IT_MSK_SHIFT 4 +#define INT_MSK_PWRHOLD_R_IT_MSK_MASK 0x10 +#define INT_MSK_PWRHOLD_R_IT_MSK_SHIFT 4 #define INT_MSK_PWRON_LP_IT_MSK_MASK 0x08 #define INT_MSK_PWRON_LP_IT_MSK_SHIFT 3 #define INT_MSK_PWRON_IT_MSK_MASK 0x04 #define INT_MSK_PWRON_IT_MSK_SHIFT 2 #define INT_MSK_VMBHI_IT_MSK_MASK 0x02 #define INT_MSK_VMBHI_IT_MSK_SHIFT 1 -#define INT_MSK_VMBDCH_IT_MSK_MASK 0x01 -#define INT_MSK_VMBDCH_IT_MSK_SHIFT 0 +#define INT_MSK_PWRHOLD_F_IT_MSK_MASK 0x01 +#define INT_MSK_PWRHOLD_F_IT_MSK_SHIFT 0 /*Register INT_STS2 (0x80) register.RegisterDescription */ @@ -650,6 +693,14 @@ /*Register INT_STS3 (0x80) register.RegisterDescription */ +#define INT_STS3_PWRDN_IT_MASK 0x80 +#define INT_STS3_PWRDN_IT_SHIFT 7 +#define INT_STS3_VMBCH2_L_IT_MASK 0x40 +#define INT_STS3_VMBCH2_L_IT_SHIFT 6 +#define INT_STS3_VMBCH2_H_IT_MASK 0x20 +#define INT_STS3_VMBCH2_H_IT_SHIFT 5 +#define INT_STS3_WTCHDG_IT_MASK 0x10 +#define INT_STS3_WTCHDG_IT_SHIFT 4 #define INT_STS3_GPIO5_F_IT_MASK 0x08 #define INT_STS3_GPIO5_F_IT_SHIFT 3 #define INT_STS3_GPIO5_R_IT_MASK 0x04 @@ -661,6 +712,14 @@ /*Register INT_MSK3 (0x80) register.RegisterDescription */ +#define INT_MSK3_PWRDN_IT_MSK_MASK 0x80 +#define INT_MSK3_PWRDN_IT_MSK_SHIFT 7 +#define INT_MSK3_VMBCH2_L_IT_MSK_MASK 0x40 +#define INT_MSK3_VMBCH2_L_IT_MSK_SHIFT 6 +#define INT_MSK3_VMBCH2_H_IT_MSK_MASK 0x20 +#define INT_MSK3_VMBCH2_H_IT_MSK_SHIFT 5 +#define INT_MSK3_WTCHDG_IT_MSK_MASK 0x10 +#define INT_MSK3_WTCHDG_IT_MSK_SHIFT 4 #define INT_MSK3_GPIO5_F_IT_MSK_MASK 0x08 #define INT_MSK3_GPIO5_F_IT_MSK_SHIFT 3 #define INT_MSK3_GPIO5_R_IT_MSK_MASK 0x04 @@ -721,34 +780,32 @@ #define TPS65910_IRQ_GPIO_F 9 #define TPS65910_NUM_IRQ 10 -#define TPS65911_IRQ_VBAT_VMBDCH 0 -#define TPS65911_IRQ_VBAT_VMBDCH2L 1 -#define TPS65911_IRQ_VBAT_VMBDCH2H 2 -#define TPS65911_IRQ_VBAT_VMHI 3 -#define TPS65911_IRQ_PWRON 4 -#define TPS65911_IRQ_PWRON_LP 5 -#define TPS65911_IRQ_PWRHOLD_F 6 -#define TPS65911_IRQ_PWRHOLD_R 7 -#define TPS65911_IRQ_HOTDIE 8 -#define TPS65911_IRQ_RTC_ALARM 9 -#define TPS65911_IRQ_RTC_PERIOD 10 -#define TPS65911_IRQ_GPIO0_R 11 -#define TPS65911_IRQ_GPIO0_F 12 -#define TPS65911_IRQ_GPIO1_R 13 -#define TPS65911_IRQ_GPIO1_F 14 -#define TPS65911_IRQ_GPIO2_R 15 -#define TPS65911_IRQ_GPIO2_F 16 -#define TPS65911_IRQ_GPIO3_R 17 -#define TPS65911_IRQ_GPIO3_F 18 -#define TPS65911_IRQ_GPIO4_R 19 -#define TPS65911_IRQ_GPIO4_F 20 -#define TPS65911_IRQ_GPIO5_R 21 -#define TPS65911_IRQ_GPIO5_F 22 -#define TPS65911_IRQ_WTCHDG 23 -#define TPS65911_IRQ_PWRDN 24 - -#define TPS65911_NUM_IRQ 25 - +#define TPS65911_IRQ_PWRHOLD_F 0 +#define TPS65911_IRQ_VBAT_VMHI 1 +#define TPS65911_IRQ_PWRON 2 +#define TPS65911_IRQ_PWRON_LP 3 +#define TPS65911_IRQ_PWRHOLD_R 4 +#define TPS65911_IRQ_HOTDIE 5 +#define TPS65911_IRQ_RTC_ALARM 6 +#define TPS65911_IRQ_RTC_PERIOD 7 +#define TPS65911_IRQ_GPIO0_R 8 +#define TPS65911_IRQ_GPIO0_F 9 +#define TPS65911_IRQ_GPIO1_R 10 +#define TPS65911_IRQ_GPIO1_F 11 +#define TPS65911_IRQ_GPIO2_R 12 +#define TPS65911_IRQ_GPIO2_F 13 +#define TPS65911_IRQ_GPIO3_R 14 +#define TPS65911_IRQ_GPIO3_F 15 +#define TPS65911_IRQ_GPIO4_R 16 +#define TPS65911_IRQ_GPIO4_F 17 +#define TPS65911_IRQ_GPIO5_R 18 +#define TPS65911_IRQ_GPIO5_F 19 +#define TPS65911_IRQ_WTCHDG 20 +#define TPS65911_IRQ_VMBCH2_H 21 +#define TPS65911_IRQ_VMBCH2_L 22 +#define TPS65911_IRQ_PWRDN 23 + +#define TPS65911_NUM_IRQ 24 /* GPIO Register Definitions */ #define TPS65910_GPIO_DEB BIT(2) @@ -848,11 +905,8 @@ struct tps65910 { struct tps65910_board *of_plat_data; /* IRQ Handling */ - struct mutex irq_lock; int chip_irq; - int irq_base; - int irq_num; - u32 irq_mask; + struct regmap_irq_chip_data *irq_data; struct irq_domain *domain; }; @@ -900,4 +954,9 @@ static inline int tps65910_reg_update_bits(struct tps65910 *tps65910, u8 reg, return regmap_update_bits(tps65910->regmap, reg, mask, val); } +static inline int tps65910_irq_get_virq(struct tps65910 *tps65910, int irq) +{ + return regmap_irq_get_virq(tps65910->irq_data, irq); +} + #endif /* __LINUX_MFD_TPS65910_H */ -- cgit v1.2.3 From 4aab3fadad32ff4df05832beff7c16fd6ad938aa Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Tue, 13 Nov 2012 19:33:58 +0530 Subject: mfd: tps65910: Move interrupt implementation code to mfd file In place of implementing the irq support in separate file, moving implementation to main mfd file. The irq files only contains the table and init steps only and does not need extra file to have this only for this purpose. Signed-off-by: Laxman Dewangan Reviewed-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/tps65910.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/tps65910.h b/include/linux/mfd/tps65910.h index b564ac29590a..0b16903f7e88 100644 --- a/include/linux/mfd/tps65910.h +++ b/include/linux/mfd/tps65910.h @@ -915,10 +915,6 @@ struct tps65910_platform_data { int irq_base; }; -int tps65910_irq_init(struct tps65910 *tps65910, int irq, - struct tps65910_platform_data *pdata); -int tps65910_irq_exit(struct tps65910 *tps65910); - static inline int tps65910_chip_id(struct tps65910 *tps65910) { return tps65910->id; -- cgit v1.2.3 From 8bad1abd6303476d6f77878aa8ea737d5d1b625c Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Thu, 4 Oct 2012 00:15:05 -0300 Subject: mfd: da9052: Introduce da9052-irq.c Create a da9052-irq.c file so that it can handle interrupt related functions. This is useful for allowing the da9052 drivers to use such functions when dealing with da9052 interrupts. Signed-off-by: Fabio Estevam Acked-by: Arnd Bergmann Reviewed-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/da9052/da9052.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/da9052/da9052.h b/include/linux/mfd/da9052/da9052.h index 0507c4c21a7d..86dd93de6ff2 100644 --- a/include/linux/mfd/da9052/da9052.h +++ b/include/linux/mfd/da9052/da9052.h @@ -146,4 +146,14 @@ void da9052_device_exit(struct da9052 *da9052); extern struct regmap_config da9052_regmap_config; +int da9052_irq_init(struct da9052 *da9052); +int da9052_irq_exit(struct da9052 *da9052); +int da9052_request_irq(struct da9052 *da9052, int irq, char *name, + irq_handler_t handler, void *data); +void da9052_free_irq(struct da9052 *da9052, int irq, void *data); + +int da9052_enable_irq(struct da9052 *da9052, int irq); +int da9052_disable_irq(struct da9052 *da9052, int irq); +int da9052_disable_irq_nosync(struct da9052 *da9052, int irq); + #endif /* __MFD_DA9052_DA9052_H */ -- cgit v1.2.3 From f01312d846016dbd38cc9865e580298fb61f2aa7 Mon Sep 17 00:00:00 2001 From: Lars Poeschel Date: Mon, 5 Nov 2012 15:48:23 +0100 Subject: mfd: Add viperboard driver Add mfd driver for Nano River Technologies viperboard. Signed-off-by: Lars Poeschel Signed-off-by: Samuel Ortiz --- include/linux/mfd/viperboard.h | 105 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 105 insertions(+) create mode 100644 include/linux/mfd/viperboard.h (limited to 'include/linux') diff --git a/include/linux/mfd/viperboard.h b/include/linux/mfd/viperboard.h new file mode 100644 index 000000000000..0d1342466db5 --- /dev/null +++ b/include/linux/mfd/viperboard.h @@ -0,0 +1,105 @@ +/* + * include/linux/mfd/viperboard.h + * + * Nano River Technologies viperboard definitions + * + * (C) 2012 by Lemonage GmbH + * Author: Lars Poeschel + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#ifndef __MFD_VIPERBOARD_H__ +#define __MFD_VIPERBOARD_H__ + +#include +#include + +#define VPRBRD_EP_OUT 0x02 +#define VPRBRD_EP_IN 0x86 + +#define VPRBRD_I2C_MSG_LEN 512 /* max length of a msg on USB level */ + +#define VPRBRD_I2C_FREQ_6MHZ 1 /* 6 MBit/s */ +#define VPRBRD_I2C_FREQ_3MHZ 2 /* 3 MBit/s */ +#define VPRBRD_I2C_FREQ_1MHZ 3 /* 1 MBit/s */ +#define VPRBRD_I2C_FREQ_FAST 4 /* 400 kbit/s */ +#define VPRBRD_I2C_FREQ_400KHZ VPRBRD_I2C_FREQ_FAST +#define VPRBRD_I2C_FREQ_200KHZ 5 /* 200 kbit/s */ +#define VPRBRD_I2C_FREQ_STD 6 /* 100 kbit/s */ +#define VPRBRD_I2C_FREQ_100KHZ VPRBRD_I2C_FREQ_STD +#define VPRBRD_I2C_FREQ_10KHZ 7 /* 10 kbit/s */ + +#define VPRBRD_I2C_CMD_WRITE 0x00 +#define VPRBRD_I2C_CMD_READ 0x01 +#define VPRBRD_I2C_CMD_ADDR 0x02 + +#define VPRBRD_USB_TYPE_OUT 0x40 +#define VPRBRD_USB_TYPE_IN 0xc0 +#define VPRBRD_USB_TIMEOUT_MS 100 +#define VPRBRD_USB_REQUEST_MAJOR 0xea +#define VPRBRD_USB_REQUEST_MINOR 0xeb + +struct vprbrd_i2c_write_hdr { + u8 cmd; + u16 addr; + u8 len1; + u8 len2; + u8 last; + u8 chan; + u16 spi; +} __packed; + +struct vprbrd_i2c_read_hdr { + u8 cmd; + u16 addr; + u8 len0; + u8 len1; + u8 len2; + u8 len3; + u8 len4; + u8 len5; + u16 tf1; /* transfer 1 length */ + u16 tf2; /* transfer 2 length */ +} __packed; + +struct vprbrd_i2c_status { + u8 unknown[11]; + u8 status; +} __packed; + +struct vprbrd_i2c_write_msg { + struct vprbrd_i2c_write_hdr header; + u8 data[VPRBRD_I2C_MSG_LEN + - sizeof(struct vprbrd_i2c_write_hdr)]; +} __packed; + +struct vprbrd_i2c_read_msg { + struct vprbrd_i2c_read_hdr header; + u8 data[VPRBRD_I2C_MSG_LEN + - sizeof(struct vprbrd_i2c_read_hdr)]; +} __packed; + +struct vprbrd_i2c_addr_msg { + u8 cmd; + u8 addr; + u8 unknown1; + u16 len; + u8 unknown2; + u8 unknown3; +} __packed; + +/* Structure to hold all device specific stuff */ +struct vprbrd { + struct usb_device *usb_dev; /* the usb device for this device */ + struct mutex lock; + u8 buf[sizeof(struct vprbrd_i2c_write_msg)]; + struct platform_device pdev; +}; + +#endif /* __MFD_VIPERBOARD_H__ */ -- cgit v1.2.3 From 9d5b72de0d1627b130fa69c5edf58b5b2df4ca50 Mon Sep 17 00:00:00 2001 From: Lars Poeschel Date: Mon, 5 Nov 2012 15:48:24 +0100 Subject: gpio: Add viperboard gpio driver This adds the mfd cell to use the gpio a and gpio b part of the Nano River Technologies viperboard. Signed-off-by: Lars Poeschel Reviewed-by: Linus Walleij Signed-off-by: Samuel Ortiz --- include/linux/mfd/viperboard.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/viperboard.h b/include/linux/mfd/viperboard.h index 0d1342466db5..42d339fac3e5 100644 --- a/include/linux/mfd/viperboard.h +++ b/include/linux/mfd/viperboard.h @@ -44,6 +44,8 @@ #define VPRBRD_USB_TIMEOUT_MS 100 #define VPRBRD_USB_REQUEST_MAJOR 0xea #define VPRBRD_USB_REQUEST_MINOR 0xeb +#define VPRBRD_USB_REQUEST_GPIOA 0xed +#define VPRBRD_USB_REQUEST_GPIOB 0xdd struct vprbrd_i2c_write_hdr { u8 cmd; -- cgit v1.2.3 From 174a13aa8669331605b138aaf61569dd7189e453 Mon Sep 17 00:00:00 2001 From: Lars Poeschel Date: Mon, 19 Nov 2012 16:36:04 +0100 Subject: i2c: Add viperboard i2c master driver This adds the mfd cell to use the i2c part of the Nano River Technologies viperboard as i2c master. Signed-off-by: Lars Poeschel Signed-off-by: Samuel Ortiz --- include/linux/mfd/viperboard.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/viperboard.h b/include/linux/mfd/viperboard.h index 42d339fac3e5..ef7851430d86 100644 --- a/include/linux/mfd/viperboard.h +++ b/include/linux/mfd/viperboard.h @@ -42,6 +42,8 @@ #define VPRBRD_USB_TYPE_OUT 0x40 #define VPRBRD_USB_TYPE_IN 0xc0 #define VPRBRD_USB_TIMEOUT_MS 100 +#define VPRBRD_USB_REQUEST_I2C_FREQ 0xe6 +#define VPRBRD_USB_REQUEST_I2C 0xe9 #define VPRBRD_USB_REQUEST_MAJOR 0xea #define VPRBRD_USB_REQUEST_MINOR 0xeb #define VPRBRD_USB_REQUEST_GPIOA 0xed -- cgit v1.2.3 From ffd8a6e7a77802dd09559be78dea63956aa8f1d5 Mon Sep 17 00:00:00 2001 From: Lars Poeschel Date: Mon, 5 Nov 2012 15:48:26 +0100 Subject: iio: adc: Add viperboard adc driver This adds the mfd cell to use the adc part of the Nano River Technologies viperboard. Signed-off-by: Lars Poeschel Reviewed-by: Lars-Peter Clausen Acked-by: Jonathan Cameron Signed-off-by: Samuel Ortiz --- include/linux/mfd/viperboard.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mfd/viperboard.h b/include/linux/mfd/viperboard.h index ef7851430d86..193452848c04 100644 --- a/include/linux/mfd/viperboard.h +++ b/include/linux/mfd/viperboard.h @@ -46,6 +46,7 @@ #define VPRBRD_USB_REQUEST_I2C 0xe9 #define VPRBRD_USB_REQUEST_MAJOR 0xea #define VPRBRD_USB_REQUEST_MINOR 0xeb +#define VPRBRD_USB_REQUEST_ADC 0xec #define VPRBRD_USB_REQUEST_GPIOA 0xed #define VPRBRD_USB_REQUEST_GPIOB 0xdd -- cgit v1.2.3 From 1950c7164646bfeeb82c34bc299d82119706afb5 Mon Sep 17 00:00:00 2001 From: Davide Ciminaghi Date: Fri, 9 Nov 2012 15:19:52 +0100 Subject: mfd: sta2x11-mfd: Add apb-soc regs driver and factor out common code A driver for the apb-soc registers is needed by the clock infrastructure code to configure and control clocks on the sta2x11 chip. Since some of the functions in sta2x11-mfd.c were almost identical for the two existing platform devices, the following changes have been performed to avoid further code duplication while adding the apb-soc-regs driver: * The sctl_regs and apbreg_regs fields in struct sta2x11_mfd have been turned into just one array of pointers accessed by device index. * Platform probe methods have become one-liners invoking a common probe with the device's index as second parameter. * For loops have been inserted where the same operations were performed for each of the two bars of a pci device. * The apbreg_mask and sctl_mask functions were almost identical, so they were turned into inline functions invoking a common __sta2x11_mfd_mask() with the platform device's index as last parameter. To do this, enum sta2x11_mfd_plat_dev has been declared in sta2x11-mfd.h and more device types have been added to it. Reviewed-by: Mark Brown Signed-off-by: Davide Ciminaghi Acked-by: Alessandro Rubini Signed-off-by: Samuel Ortiz --- include/linux/mfd/sta2x11-mfd.h | 156 +++++++++++++++++++++++++++++++++++++++- 1 file changed, 154 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/sta2x11-mfd.h b/include/linux/mfd/sta2x11-mfd.h index d179227e866f..4d858797d7e2 100644 --- a/include/linux/mfd/sta2x11-mfd.h +++ b/include/linux/mfd/sta2x11-mfd.h @@ -26,6 +26,20 @@ #include #include +enum sta2x11_mfd_plat_dev { + sta2x11_sctl = 0, + sta2x11_gpio, + sta2x11_scr, + sta2x11_time, + sta2x11_apbreg, + sta2x11_apb_soc_regs, + sta2x11_vic, + sta2x11_n_mfd_plat_devs, +}; + +extern u32 +__sta2x11_mfd_mask(struct pci_dev *, u32, u32, u32, enum sta2x11_mfd_plat_dev); + /* * The MFD PCI block includes the GPIO peripherals and other register blocks. * For GPIO, we have 32*4 bits (I use "gsta" for "gpio sta2x11".) @@ -182,7 +196,11 @@ struct sta2x11_gpio_pdata { * The APB bridge has its own registers, needed by our users as well. * They are accessed with the following read/mask/write function. */ -u32 sta2x11_apbreg_mask(struct pci_dev *pdev, u32 reg, u32 mask, u32 val); +static inline u32 +sta2x11_apbreg_mask(struct pci_dev *pdev, u32 reg, u32 mask, u32 val) +{ + return __sta2x11_mfd_mask(pdev, reg, mask, val, sta2x11_apbreg); +} /* CAN and MLB */ #define APBREG_BSR 0x00 /* Bridge Status Reg */ @@ -211,7 +229,11 @@ u32 sta2x11_apbreg_mask(struct pci_dev *pdev, u32 reg, u32 mask, u32 val); * The system controller has its own registers. Some of these are accessed * by out users as well, using the following read/mask/write/function */ -u32 sta2x11_sctl_mask(struct pci_dev *pdev, u32 reg, u32 mask, u32 val); +static inline +u32 sta2x11_sctl_mask(struct pci_dev *pdev, u32 reg, u32 mask, u32 val) +{ + return __sta2x11_mfd_mask(pdev, reg, mask, val, sta2x11_sctl); +} #define SCTL_SCCTL 0x00 /* System controller control register */ #define SCTL_ARMCFG 0x04 /* ARM configuration register */ @@ -321,4 +343,134 @@ u32 sta2x11_sctl_mask(struct pci_dev *pdev, u32 reg, u32 mask, u32 val); #define SCTL_SCPEREN1_I2C3 (1 << 16) #define SCTL_SCPEREN1_USB_PHY (1 << 17) +/* + * APB-SOC registers + */ +static inline +u32 sta2x11_apb_soc_regs_mask(struct pci_dev *pdev, u32 reg, u32 mask, u32 val) +{ + return __sta2x11_mfd_mask(pdev, reg, mask, val, sta2x11_apb_soc_regs); +} + +#define PCIE_EP1_FUNC3_0_INTR_REG 0x000 +#define PCIE_EP1_FUNC7_4_INTR_REG 0x004 +#define PCIE_EP2_FUNC3_0_INTR_REG 0x008 +#define PCIE_EP2_FUNC7_4_INTR_REG 0x00c +#define PCIE_EP3_FUNC3_0_INTR_REG 0x010 +#define PCIE_EP3_FUNC7_4_INTR_REG 0x014 +#define PCIE_EP4_FUNC3_0_INTR_REG 0x018 +#define PCIE_EP4_FUNC7_4_INTR_REG 0x01c +#define PCIE_INTR_ENABLE0_REG 0x020 +#define PCIE_INTR_ENABLE1_REG 0x024 +#define PCIE_EP1_FUNC_TC_REG 0x028 +#define PCIE_EP2_FUNC_TC_REG 0x02c +#define PCIE_EP3_FUNC_TC_REG 0x030 +#define PCIE_EP4_FUNC_TC_REG 0x034 +#define PCIE_EP1_FUNC_F_REG 0x038 +#define PCIE_EP2_FUNC_F_REG 0x03c +#define PCIE_EP3_FUNC_F_REG 0x040 +#define PCIE_EP4_FUNC_F_REG 0x044 +#define PCIE_PAB_AMBA_SW_RST_REG 0x048 +#define PCIE_PM_STATUS_0_PORT_0_4 0x04c +#define PCIE_PM_STATUS_7_0_EP1 0x050 +#define PCIE_PM_STATUS_7_0_EP2 0x054 +#define PCIE_PM_STATUS_7_0_EP3 0x058 +#define PCIE_PM_STATUS_7_0_EP4 0x05c +#define PCIE_DEV_ID_0_EP1_REG 0x060 +#define PCIE_CC_REV_ID_0_EP1_REG 0x064 +#define PCIE_DEV_ID_1_EP1_REG 0x068 +#define PCIE_CC_REV_ID_1_EP1_REG 0x06c +#define PCIE_DEV_ID_2_EP1_REG 0x070 +#define PCIE_CC_REV_ID_2_EP1_REG 0x074 +#define PCIE_DEV_ID_3_EP1_REG 0x078 +#define PCIE_CC_REV_ID_3_EP1_REG 0x07c +#define PCIE_DEV_ID_4_EP1_REG 0x080 +#define PCIE_CC_REV_ID_4_EP1_REG 0x084 +#define PCIE_DEV_ID_5_EP1_REG 0x088 +#define PCIE_CC_REV_ID_5_EP1_REG 0x08c +#define PCIE_DEV_ID_6_EP1_REG 0x090 +#define PCIE_CC_REV_ID_6_EP1_REG 0x094 +#define PCIE_DEV_ID_7_EP1_REG 0x098 +#define PCIE_CC_REV_ID_7_EP1_REG 0x09c +#define PCIE_DEV_ID_0_EP2_REG 0x0a0 +#define PCIE_CC_REV_ID_0_EP2_REG 0x0a4 +#define PCIE_DEV_ID_1_EP2_REG 0x0a8 +#define PCIE_CC_REV_ID_1_EP2_REG 0x0ac +#define PCIE_DEV_ID_2_EP2_REG 0x0b0 +#define PCIE_CC_REV_ID_2_EP2_REG 0x0b4 +#define PCIE_DEV_ID_3_EP2_REG 0x0b8 +#define PCIE_CC_REV_ID_3_EP2_REG 0x0bc +#define PCIE_DEV_ID_4_EP2_REG 0x0c0 +#define PCIE_CC_REV_ID_4_EP2_REG 0x0c4 +#define PCIE_DEV_ID_5_EP2_REG 0x0c8 +#define PCIE_CC_REV_ID_5_EP2_REG 0x0cc +#define PCIE_DEV_ID_6_EP2_REG 0x0d0 +#define PCIE_CC_REV_ID_6_EP2_REG 0x0d4 +#define PCIE_DEV_ID_7_EP2_REG 0x0d8 +#define PCIE_CC_REV_ID_7_EP2_REG 0x0dC +#define PCIE_DEV_ID_0_EP3_REG 0x0e0 +#define PCIE_CC_REV_ID_0_EP3_REG 0x0e4 +#define PCIE_DEV_ID_1_EP3_REG 0x0e8 +#define PCIE_CC_REV_ID_1_EP3_REG 0x0ec +#define PCIE_DEV_ID_2_EP3_REG 0x0f0 +#define PCIE_CC_REV_ID_2_EP3_REG 0x0f4 +#define PCIE_DEV_ID_3_EP3_REG 0x0f8 +#define PCIE_CC_REV_ID_3_EP3_REG 0x0fc +#define PCIE_DEV_ID_4_EP3_REG 0x100 +#define PCIE_CC_REV_ID_4_EP3_REG 0x104 +#define PCIE_DEV_ID_5_EP3_REG 0x108 +#define PCIE_CC_REV_ID_5_EP3_REG 0x10c +#define PCIE_DEV_ID_6_EP3_REG 0x110 +#define PCIE_CC_REV_ID_6_EP3_REG 0x114 +#define PCIE_DEV_ID_7_EP3_REG 0x118 +#define PCIE_CC_REV_ID_7_EP3_REG 0x11c +#define PCIE_DEV_ID_0_EP4_REG 0x120 +#define PCIE_CC_REV_ID_0_EP4_REG 0x124 +#define PCIE_DEV_ID_1_EP4_REG 0x128 +#define PCIE_CC_REV_ID_1_EP4_REG 0x12c +#define PCIE_DEV_ID_2_EP4_REG 0x130 +#define PCIE_CC_REV_ID_2_EP4_REG 0x134 +#define PCIE_DEV_ID_3_EP4_REG 0x138 +#define PCIE_CC_REV_ID_3_EP4_REG 0x13c +#define PCIE_DEV_ID_4_EP4_REG 0x140 +#define PCIE_CC_REV_ID_4_EP4_REG 0x144 +#define PCIE_DEV_ID_5_EP4_REG 0x148 +#define PCIE_CC_REV_ID_5_EP4_REG 0x14c +#define PCIE_DEV_ID_6_EP4_REG 0x150 +#define PCIE_CC_REV_ID_6_EP4_REG 0x154 +#define PCIE_DEV_ID_7_EP4_REG 0x158 +#define PCIE_CC_REV_ID_7_EP4_REG 0x15c +#define PCIE_SUBSYS_VEN_ID_REG 0x160 +#define PCIE_COMMON_CLOCK_CONFIG_0_4_0 0x164 +#define PCIE_MIPHYP_SSC_EN_REG 0x168 +#define PCIE_MIPHYP_ADDR_REG 0x16c +#define PCIE_L1_ASPM_READY_REG 0x170 +#define PCIE_EXT_CFG_RDY_REG 0x174 +#define PCIE_SoC_INT_ROUTER_STATUS0_REG 0x178 +#define PCIE_SoC_INT_ROUTER_STATUS1_REG 0x17c +#define PCIE_SoC_INT_ROUTER_STATUS2_REG 0x180 +#define PCIE_SoC_INT_ROUTER_STATUS3_REG 0x184 +#define DMA_IP_CTRL_REG 0x324 +#define DISP_BRIDGE_PU_PD_CTRL_REG 0x328 +#define VIP_PU_PD_CTRL_REG 0x32c +#define USB_MLB_PU_PD_CTRL_REG 0x330 +#define SDIO_PU_PD_MISCFUNC_CTRL_REG1 0x334 +#define SDIO_PU_PD_MISCFUNC_CTRL_REG2 0x338 +#define UART_PU_PD_CTRL_REG 0x33c +#define ARM_Lock 0x340 +#define SYS_IO_CHAR_REG1 0x344 +#define SYS_IO_CHAR_REG2 0x348 +#define SATA_CORE_ID_REG 0x34c +#define SATA_CTRL_REG 0x350 +#define I2C_HSFIX_MISC_REG 0x354 +#define SPARE2_RESERVED 0x358 +#define SPARE3_RESERVED 0x35c +#define MASTER_LOCK_REG 0x368 +#define SYSTEM_CONFIG_STATUS_REG 0x36c +#define MSP_CLK_CTRL_REG 0x39c +#define COMPENSATION_REG1 0x3c4 +#define COMPENSATION_REG2 0x3c8 +#define COMPENSATION_REG3 0x3cc +#define TEST_CTL_REG 0x3d0 + #endif /* __STA2X11_MFD_H */ -- cgit v1.2.3 From d94e25535a7979a6c81922496f475a5dd0e006b4 Mon Sep 17 00:00:00 2001 From: Davide Ciminaghi Date: Fri, 9 Nov 2012 15:19:53 +0100 Subject: mfd: sta2x11-mfd: Add regmap support Signed-off-by: Davide Ciminaghi Acked-by: Alessandro Rubini Signed-off-by: Samuel Ortiz --- include/linux/mfd/sta2x11-mfd.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mfd/sta2x11-mfd.h b/include/linux/mfd/sta2x11-mfd.h index 4d858797d7e2..83344304f2cf 100644 --- a/include/linux/mfd/sta2x11-mfd.h +++ b/include/linux/mfd/sta2x11-mfd.h @@ -246,6 +246,7 @@ u32 sta2x11_sctl_mask(struct pci_dev *pdev, u32 reg, u32 mask, u32 val) #define SCTL_SCPEREN1 0x20 /* Peripheral clock enable register 1 */ #define SCTL_SCPEREN2 0x24 /* Peripheral clock enable register 2 */ #define SCTL_SCGRST 0x28 /* Peripheral global reset */ +#define SCTL_SCPCIECSBRST 0x2c /* PCIe PAB CSB reset status register */ #define SCTL_SCPCIPMCR1 0x30 /* PCI power management control 1 */ #define SCTL_SCPCIPMCR2 0x34 /* PCI power management control 2 */ #define SCTL_SCPCIPMSR1 0x38 /* PCI power management status 1 */ -- cgit v1.2.3 From 29f5b5a326b44c55e81b15308255ba695fecb323 Mon Sep 17 00:00:00 2001 From: Davide Ciminaghi Date: Fri, 9 Nov 2012 15:19:54 +0100 Subject: mfd: sta2x11-mfd: Add sta2x11_mfd_get_regs_data() function A couple of predefined clocks (mux and gated) need to be initialized with the virtual address of the clock's controlling register and the address of a spinlock used to protect against races. This function exports such data for all the mfd cells. Signed-off-by: Davide Ciminaghi Acked-by: Alessandro Rubini Signed-off-by: Samuel Ortiz --- include/linux/mfd/sta2x11-mfd.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/sta2x11-mfd.h b/include/linux/mfd/sta2x11-mfd.h index 83344304f2cf..e813e5efbe4e 100644 --- a/include/linux/mfd/sta2x11-mfd.h +++ b/include/linux/mfd/sta2x11-mfd.h @@ -474,4 +474,9 @@ u32 sta2x11_apb_soc_regs_mask(struct pci_dev *pdev, u32 reg, u32 mask, u32 val) #define COMPENSATION_REG3 0x3cc #define TEST_CTL_REG 0x3d0 +extern int sta2x11_mfd_get_regs_data(struct platform_device *pdev, + enum sta2x11_mfd_plat_dev index, + void __iomem **regs, + spinlock_t **lock); + #endif /* __STA2X11_MFD_H */ -- cgit v1.2.3 From b18adafccd497245a6bc5b867bf9cba7e01f8729 Mon Sep 17 00:00:00 2001 From: Davide Ciminaghi Date: Fri, 9 Nov 2012 15:19:55 +0100 Subject: mfd: sta2x11-mfd: Use defines for platform devices' names Since there are now many sta2x11-mfd platform devices, using defines for their names looks like a better solution. Signed-off-by: Davide Ciminaghi Acked-by: Alessandro Rubini Signed-off-by: Samuel Ortiz --- include/linux/mfd/sta2x11-mfd.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/sta2x11-mfd.h b/include/linux/mfd/sta2x11-mfd.h index e813e5efbe4e..058de2bacf76 100644 --- a/include/linux/mfd/sta2x11-mfd.h +++ b/include/linux/mfd/sta2x11-mfd.h @@ -37,6 +37,14 @@ enum sta2x11_mfd_plat_dev { sta2x11_n_mfd_plat_devs, }; +#define STA2X11_MFD_SCTL_NAME "sta2x11-sctl" +#define STA2X11_MFD_GPIO_NAME "sta2x11-gpio" +#define STA2X11_MFD_SCR_NAME "sta2x11-scr" +#define STA2X11_MFD_TIME_NAME "sta2x11-time" +#define STA2X11_MFD_APBREG_NAME "sta2x11-apbreg" +#define STA2X11_MFD_APB_SOC_REGS_NAME "sta2x11-apb-soc-regs" +#define STA2X11_MFD_VIC_NAME "sta2x11-vic" + extern u32 __sta2x11_mfd_mask(struct pci_dev *, u32, u32, u32, enum sta2x11_mfd_plat_dev); -- cgit v1.2.3 From dba6c1aeea4dd0e251e41c3f585abf4a06a4f057 Mon Sep 17 00:00:00 2001 From: Davide Ciminaghi Date: Fri, 9 Nov 2012 15:19:59 +0100 Subject: mfd: sta2x11-mfd: Add scr (otp registers) platform driver Signed-off-by: Davide Ciminaghi Acked-by: Alessandro Rubini Signed-off-by: Samuel Ortiz --- include/linux/mfd/sta2x11-mfd.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/sta2x11-mfd.h b/include/linux/mfd/sta2x11-mfd.h index 058de2bacf76..08cad95758c6 100644 --- a/include/linux/mfd/sta2x11-mfd.h +++ b/include/linux/mfd/sta2x11-mfd.h @@ -482,6 +482,13 @@ u32 sta2x11_apb_soc_regs_mask(struct pci_dev *pdev, u32 reg, u32 mask, u32 val) #define COMPENSATION_REG3 0x3cc #define TEST_CTL_REG 0x3d0 +/* + * SECR (OTP) registers + */ +#define STA2X11_SECR_CR 0x00 +#define STA2X11_SECR_FVR0 0x10 +#define STA2X11_SECR_FVR1 0x14 + extern int sta2x11_mfd_get_regs_data(struct platform_device *pdev, enum sta2x11_mfd_plat_dev index, void __iomem **regs, -- cgit v1.2.3 From 818b5c2528b9e31101bb39018fd211dcf159a696 Mon Sep 17 00:00:00 2001 From: Davide Ciminaghi Date: Fri, 9 Nov 2012 15:20:00 +0100 Subject: mfd: sta2x11-mfd: Add defines for some sta2x11 sctl registers These are required for the clock infrastructure code to properly configure and control the sta2x11 PLLs. Signed-off-by: Davide Ciminaghi Acked-by: Alessandro Rubini Signed-off-by: Samuel Ortiz --- include/linux/mfd/sta2x11-mfd.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/sta2x11-mfd.h b/include/linux/mfd/sta2x11-mfd.h index 08cad95758c6..9a855ac11cbf 100644 --- a/include/linux/mfd/sta2x11-mfd.h +++ b/include/linux/mfd/sta2x11-mfd.h @@ -246,8 +246,29 @@ u32 sta2x11_sctl_mask(struct pci_dev *pdev, u32 reg, u32 mask, u32 val) #define SCTL_SCCTL 0x00 /* System controller control register */ #define SCTL_ARMCFG 0x04 /* ARM configuration register */ #define SCTL_SCPLLCTL 0x08 /* PLL control status register */ + +#define SCTL_SCPLLCTL_AUDIO_PLL_PD BIT(1) +#define SCTL_SCPLLCTL_FRAC_CONTROL BIT(3) +#define SCTL_SCPLLCTL_STRB_BYPASS BIT(6) +#define SCTL_SCPLLCTL_STRB_INPUT BIT(8) + #define SCTL_SCPLLFCTRL 0x0c /* PLL frequency control register */ + +#define SCTL_SCPLLFCTRL_AUDIO_PLL_NDIV_MASK 0xff +#define SCTL_SCPLLFCTRL_AUDIO_PLL_NDIV_SHIFT 10 +#define SCTL_SCPLLFCTRL_AUDIO_PLL_IDF_MASK 7 +#define SCTL_SCPLLFCTRL_AUDIO_PLL_IDF_SHIFT 21 +#define SCTL_SCPLLFCTRL_AUDIO_PLL_ODF_MASK 7 +#define SCTL_SCPLLFCTRL_AUDIO_PLL_ODF_SHIFT 18 +#define SCTL_SCPLLFCTRL_DITHER_DISABLE_MASK 0x03 +#define SCTL_SCPLLFCTRL_DITHER_DISABLE_SHIFT 4 + + #define SCTL_SCRESFRACT 0x10 /* PLL fractional input register */ + +#define SCTL_SCRESFRACT_MASK 0x0000ffff + + #define SCTL_SCRESCTRL1 0x14 /* Peripheral reset control 1 */ #define SCTL_SCRESXTRL2 0x18 /* Peripheral reset control 2 */ #define SCTL_SCPEREN0 0x1c /* Peripheral clock enable register 0 */ -- cgit v1.2.3 From bcf58e725ddc45d31addbc6627d4f0edccc824c1 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Thu, 26 Jul 2012 04:02:49 -0700 Subject: userns: Make create_new_namespaces take a user_ns parameter Modify create_new_namespaces to explicitly take a user namespace parameter, instead of implicitly through the task_struct. This allows an implementation of unshare(CLONE_NEWUSER) where the new user namespace is not stored onto the current task_struct until after all of the namespaces are created. Acked-by: Serge Hallyn Signed-off-by: "Eric W. Biederman" --- include/linux/ipc_namespace.h | 7 ++++--- include/linux/utsname.h | 6 +++--- 2 files changed, 7 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h index 5499c92a9153..f03af702a39d 100644 --- a/include/linux/ipc_namespace.h +++ b/include/linux/ipc_namespace.h @@ -133,7 +133,8 @@ static inline int mq_init_ns(struct ipc_namespace *ns) { return 0; } #if defined(CONFIG_IPC_NS) extern struct ipc_namespace *copy_ipcs(unsigned long flags, - struct task_struct *tsk); + struct user_namespace *user_ns, struct ipc_namespace *ns); + static inline struct ipc_namespace *get_ipc_ns(struct ipc_namespace *ns) { if (ns) @@ -144,12 +145,12 @@ static inline struct ipc_namespace *get_ipc_ns(struct ipc_namespace *ns) extern void put_ipc_ns(struct ipc_namespace *ns); #else static inline struct ipc_namespace *copy_ipcs(unsigned long flags, - struct task_struct *tsk) + struct user_namespace *user_ns, struct ipc_namespace *ns) { if (flags & CLONE_NEWIPC) return ERR_PTR(-EINVAL); - return tsk->nsproxy->ipc_ns; + return ns; } static inline struct ipc_namespace *get_ipc_ns(struct ipc_namespace *ns) diff --git a/include/linux/utsname.h b/include/linux/utsname.h index 2b345206722a..221f4a0a7502 100644 --- a/include/linux/utsname.h +++ b/include/linux/utsname.h @@ -33,7 +33,7 @@ static inline void get_uts_ns(struct uts_namespace *ns) } extern struct uts_namespace *copy_utsname(unsigned long flags, - struct task_struct *tsk); + struct user_namespace *user_ns, struct uts_namespace *old_ns); extern void free_uts_ns(struct kref *kref); static inline void put_uts_ns(struct uts_namespace *ns) @@ -50,12 +50,12 @@ static inline void put_uts_ns(struct uts_namespace *ns) } static inline struct uts_namespace *copy_utsname(unsigned long flags, - struct task_struct *tsk) + struct user_namespace *user_ns, struct uts_namespace *old_ns) { if (flags & CLONE_NEWUTS) return ERR_PTR(-EINVAL); - return tsk->nsproxy->uts_ns; + return old_ns; } #endif -- cgit v1.2.3 From 4c44aaafa8108f584831850ab48a975e971db2de Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Thu, 26 Jul 2012 05:05:21 -0700 Subject: userns: Kill task_user_ns The task_user_ns function hides the fact that it is getting the user namespace from struct cred on the task. struct cred may go away as soon as the rcu lock is released. This leads to a race where we can dereference a stale user namespace pointer. To make it obvious a struct cred is involved kill task_user_ns. To kill the race modify the users of task_user_ns to only reference the user namespace while the rcu lock is held. Cc: Kees Cook Cc: James Morris Acked-by: Kees Cook Acked-by: Serge Hallyn Signed-off-by: "Eric W. Biederman" --- include/linux/cred.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cred.h b/include/linux/cred.h index ebbed2ce6637..856d2622d832 100644 --- a/include/linux/cred.h +++ b/include/linux/cred.h @@ -357,10 +357,8 @@ static inline void put_cred(const struct cred *_cred) extern struct user_namespace init_user_ns; #ifdef CONFIG_USER_NS #define current_user_ns() (current_cred_xxx(user_ns)) -#define task_user_ns(task) (task_cred_xxx((task), user_ns)) #else #define current_user_ns() (&init_user_ns) -#define task_user_ns(task) (&init_user_ns) #endif -- cgit v1.2.3 From cde1975bc242f3e1072bde623ef378e547b73f91 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Thu, 26 Jul 2012 06:24:06 -0700 Subject: userns: Implent proc namespace operations This allows entering a user namespace, and the ability to store a reference to a user namespace with a bind mount. Addition of missing userns_ns_put in userns_install from Gao feng Acked-by: Serge Hallyn Signed-off-by: "Eric W. Biederman" --- include/linux/proc_fs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h index 9014c041e752..31447819bc55 100644 --- a/include/linux/proc_fs.h +++ b/include/linux/proc_fs.h @@ -258,6 +258,7 @@ extern const struct proc_ns_operations netns_operations; extern const struct proc_ns_operations utsns_operations; extern const struct proc_ns_operations ipcns_operations; extern const struct proc_ns_operations pidns_operations; +extern const struct proc_ns_operations userns_operations; extern const struct proc_ns_operations mntns_operations; union proc_op { -- cgit v1.2.3 From b2e0d98705e60e45bbb3c0032c48824ad7ae0704 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Thu, 26 Jul 2012 05:15:35 -0700 Subject: userns: Implement unshare of the user namespace - Add CLONE_THREAD to the unshare flags if CLONE_NEWUSER is selected As changing user namespaces is only valid if all there is only a single thread. - Restore the code to add CLONE_VM if CLONE_THREAD is selected and the code to addCLONE_SIGHAND if CLONE_VM is selected. Making the constraints in the code clear. Acked-by: Serge Hallyn Signed-off-by: "Eric W. Biederman" --- include/linux/nsproxy.h | 2 +- include/linux/user_namespace.h | 9 +++++++++ 2 files changed, 10 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nsproxy.h b/include/linux/nsproxy.h index cc37a55ad004..10e5947491c7 100644 --- a/include/linux/nsproxy.h +++ b/include/linux/nsproxy.h @@ -67,7 +67,7 @@ void exit_task_namespaces(struct task_struct *tsk); void switch_task_namespaces(struct task_struct *tsk, struct nsproxy *new); void free_nsproxy(struct nsproxy *ns); int unshare_nsproxy_namespaces(unsigned long, struct nsproxy **, - struct fs_struct *); + struct cred *, struct fs_struct *); int __init nsproxy_cache_init(void); static inline void put_nsproxy(struct nsproxy *ns) diff --git a/include/linux/user_namespace.h b/include/linux/user_namespace.h index 95142cae446a..17651f08d67f 100644 --- a/include/linux/user_namespace.h +++ b/include/linux/user_namespace.h @@ -39,6 +39,7 @@ static inline struct user_namespace *get_user_ns(struct user_namespace *ns) } extern int create_user_ns(struct cred *new); +extern int unshare_userns(unsigned long unshare_flags, struct cred **new_cred); extern void free_user_ns(struct kref *kref); static inline void put_user_ns(struct user_namespace *ns) @@ -66,6 +67,14 @@ static inline int create_user_ns(struct cred *new) return -EINVAL; } +static inline int unshare_userns(unsigned long unshare_flags, + struct cred **new_cred) +{ + if (unshare_flags & CLONE_NEWUSER) + return -EINVAL; + return 0; +} + static inline void put_user_ns(struct user_namespace *ns) { } -- cgit v1.2.3 From 33d6dce607573b5fd7a43168e0d91221b3ca532b Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 17 Jun 2011 13:33:20 -0700 Subject: proc: Generalize proc inode allocation Generalize the proc inode allocation so that it can be used without having to having to create a proc_dir_entry. This will allow namespace file descriptors to remain light weight entitities but still have the same inode number when the backing namespace is the same. Acked-by: Serge E. Hallyn Signed-off-by: Eric W. Biederman --- include/linux/proc_fs.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h index 31447819bc55..bf1d000fbba6 100644 --- a/include/linux/proc_fs.h +++ b/include/linux/proc_fs.h @@ -176,6 +176,8 @@ extern struct proc_dir_entry *proc_net_mkdir(struct net *net, const char *name, extern struct file *proc_ns_fget(int fd); extern bool proc_ns_inode(struct inode *inode); +extern int proc_alloc_inum(unsigned int *pino); +extern void proc_free_inum(unsigned int inum); #else #define proc_net_fops_create(net, name, mode, fops) ({ (void)(mode), NULL; }) @@ -235,6 +237,14 @@ static inline bool proc_ns_inode(struct inode *inode) return false; } +static inline int proc_alloc_inum(unsigned int *inum) +{ + *inum = 1; + return 0; +} +static inline void proc_free_inum(unsigned int inum) +{ +} #endif /* CONFIG_PROC_FS */ #if !defined(CONFIG_PROC_KCORE) -- cgit v1.2.3 From 98f842e675f96ffac96e6c50315790912b2812be Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Wed, 15 Jun 2011 10:21:48 -0700 Subject: proc: Usable inode numbers for the namespace file descriptors. Assign a unique proc inode to each namespace, and use that inode number to ensure we only allocate at most one proc inode for every namespace in proc. A single proc inode per namespace allows userspace to test to see if two processes are in the same namespace. This has been a long requested feature and only blocked because a naive implementation would put the id in a global space and would ultimately require having a namespace for the names of namespaces, making migration and certain virtualization tricks impossible. We still don't have per superblock inode numbers for proc, which appears necessary for application unaware checkpoint/restart and migrations (if the application is using namespace file descriptors) but that is now allowd by the design if it becomes important. I have preallocated the ipc and uts initial proc inode numbers so their structures can be statically initialized. Signed-off-by: Eric W. Biederman --- include/linux/ipc_namespace.h | 2 ++ include/linux/pid_namespace.h | 1 + include/linux/proc_fs.h | 7 ++++++- include/linux/user_namespace.h | 1 + include/linux/utsname.h | 1 + 5 files changed, 11 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h index f03af702a39d..fe771978e877 100644 --- a/include/linux/ipc_namespace.h +++ b/include/linux/ipc_namespace.h @@ -67,6 +67,8 @@ struct ipc_namespace { /* user_ns which owns the ipc ns */ struct user_namespace *user_ns; + + unsigned int proc_inum; }; extern struct ipc_namespace init_ipc_ns; diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h index 4c96acdb2489..bf285999273a 100644 --- a/include/linux/pid_namespace.h +++ b/include/linux/pid_namespace.h @@ -37,6 +37,7 @@ struct pid_namespace { kgid_t pid_gid; int hide_pid; int reboot; /* group exit code if this pidns was rebooted */ + unsigned int proc_inum; }; extern struct pid_namespace init_pid_ns; diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h index bf1d000fbba6..2e24018b7cec 100644 --- a/include/linux/proc_fs.h +++ b/include/linux/proc_fs.h @@ -28,7 +28,11 @@ struct mm_struct; */ enum { - PROC_ROOT_INO = 1, + PROC_ROOT_INO = 1, + PROC_IPC_INIT_INO = 0xEFFFFFFFU, + PROC_UTS_INIT_INO = 0xEFFFFFFEU, + PROC_USER_INIT_INO = 0xEFFFFFFDU, + PROC_PID_INIT_INO = 0xEFFFFFFCU, }; /* @@ -263,6 +267,7 @@ struct proc_ns_operations { void *(*get)(struct task_struct *task); void (*put)(void *ns); int (*install)(struct nsproxy *nsproxy, void *ns); + unsigned int (*inum)(void *ns); }; extern const struct proc_ns_operations netns_operations; extern const struct proc_ns_operations utsns_operations; diff --git a/include/linux/user_namespace.h b/include/linux/user_namespace.h index 17651f08d67f..b9bd2e6c73cc 100644 --- a/include/linux/user_namespace.h +++ b/include/linux/user_namespace.h @@ -25,6 +25,7 @@ struct user_namespace { struct user_namespace *parent; kuid_t owner; kgid_t group; + unsigned int proc_inum; }; extern struct user_namespace init_user_ns; diff --git a/include/linux/utsname.h b/include/linux/utsname.h index 221f4a0a7502..239e27733d6c 100644 --- a/include/linux/utsname.h +++ b/include/linux/utsname.h @@ -23,6 +23,7 @@ struct uts_namespace { struct kref kref; struct new_utsname name; struct user_namespace *user_ns; + unsigned int proc_inum; }; extern struct uts_namespace init_uts_ns; -- cgit v1.2.3 From 97fa4cf442ff2872000d9110686371775795a32b Mon Sep 17 00:00:00 2001 From: Sebastian Hesselbarth Date: Sat, 17 Nov 2012 15:22:22 +0100 Subject: clk: mvebu: add mvebu core clocks. This driver allows to provide DT clocks for core clocks found on Marvell Kirkwood, Dove & 370/XP SoCs. The core clock frequencies and ratios are determined by decoding the Sample-At-Reset registers. Although technically correct, using a divider of 0 will lead to div_by_zero panic. Let's use a ratio of 0/1 instead to fail later with a zero clock. Signed-off-by: Gregory CLEMENT Signed-off-by: Sebastian Hesselbarth Signed-off-by: Andrew Lunn Tested-by Gregory CLEMENT --- include/linux/clk/mvebu.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 include/linux/clk/mvebu.h (limited to 'include/linux') diff --git a/include/linux/clk/mvebu.h b/include/linux/clk/mvebu.h new file mode 100644 index 000000000000..8c4ae713b063 --- /dev/null +++ b/include/linux/clk/mvebu.h @@ -0,0 +1,22 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __CLK_MVEBU_H_ +#define __CLK_MVEBU_H_ + +void __init mvebu_clocks_init(void); + +#endif -- cgit v1.2.3 From d0b2fdd2a51203f04ea0a5d716e033c15e0231af Mon Sep 17 00:00:00 2001 From: Tao Ma Date: Tue, 20 Nov 2012 22:06:18 +0800 Subject: cgroup: remove obsolete guarantee from cgroup_task_migrate. 'guarantee' is already removed from cgroup_task_migrate, so remove the corresponding comments. Some other typos in cgroup are also changed. Cc: Tejun Heo Cc: Li Zefan Signed-off-by: Tao Ma Signed-off-by: Tejun Heo --- include/linux/cgroup.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 82cf9e6fc77b..7d73905dcba2 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -66,7 +66,7 @@ struct cgroup_subsys_state { /* * State maintained by the cgroup system to allow subsystems * to be "busy". Should be accessed via css_get(), - * css_tryget() and and css_put(). + * css_tryget() and css_put(). */ atomic_t refcnt; @@ -276,7 +276,7 @@ struct cgroup_map_cb { /* cftype->flags */ #define CFTYPE_ONLY_ON_ROOT (1U << 0) /* only create on root cg */ -#define CFTYPE_NOT_ON_ROOT (1U << 1) /* don't create onp root cg */ +#define CFTYPE_NOT_ON_ROOT (1U << 1) /* don't create on root cg */ #define MAX_CFTYPE_NAME 64 -- cgit v1.2.3 From 60d151f38799d5e15845ee04b73cbf3839f1b06c Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Mon, 29 Oct 2012 16:54:49 +0100 Subject: dma: mv_xor: allow channels to be registered directly from the main device Extend the XOR engine driver (currently called "mv_xor_shared") so that XOR channels can be passed in the platform_data structure, and be registered from there. This will allow the users of the driver to be converted to the single platform_driver variant of the mv_xor driver. Signed-off-by: Thomas Petazzoni --- include/linux/platform_data/dma-mv_xor.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/dma-mv_xor.h b/include/linux/platform_data/dma-mv_xor.h index 2ba1f7d76eef..f2aed978ca25 100644 --- a/include/linux/platform_data/dma-mv_xor.h +++ b/include/linux/platform_data/dma-mv_xor.h @@ -20,5 +20,8 @@ struct mv_xor_platform_data { size_t pool_size; }; +struct mv_xor_shared_platform_data { + struct mv_xor_platform_data *channels; +}; #endif -- cgit v1.2.3 From 18b2a02c7c8db8bb87a165d26c269968d3dd47bd Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Tue, 30 Oct 2012 11:54:34 +0100 Subject: dma: mv_xor: remove sub-driver 'mv_xor' Now that XOR channels are directly registered by the main 'mv_xor_shared' device ->probe() function and all users of the 'mv_xor' device have been removed, we can get rid of the latter. Signed-off-by: Thomas Petazzoni --- include/linux/platform_data/dma-mv_xor.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/dma-mv_xor.h b/include/linux/platform_data/dma-mv_xor.h index f2aed978ca25..6abe5f9326b6 100644 --- a/include/linux/platform_data/dma-mv_xor.h +++ b/include/linux/platform_data/dma-mv_xor.h @@ -11,7 +11,6 @@ #include #define MV_XOR_SHARED_NAME "mv_xor_shared" -#define MV_XOR_NAME "mv_xor" struct mv_xor_platform_data { struct platform_device *shared; -- cgit v1.2.3 From 2ccc469cfecee291707dd50e5842cbf206bc17d7 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Wed, 31 Oct 2012 13:24:41 +0100 Subject: dma: mv_xor: remove 'shared' from mv_xor_platform_data This member of the platform_data structure is no longer used, so get rid of it. Signed-off-by: Thomas Petazzoni --- include/linux/platform_data/dma-mv_xor.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/dma-mv_xor.h b/include/linux/platform_data/dma-mv_xor.h index 6abe5f9326b6..4a0980b14c9b 100644 --- a/include/linux/platform_data/dma-mv_xor.h +++ b/include/linux/platform_data/dma-mv_xor.h @@ -13,7 +13,6 @@ #define MV_XOR_SHARED_NAME "mv_xor_shared" struct mv_xor_platform_data { - struct platform_device *shared; int hw_id; dma_cap_mask_t cap_mask; size_t pool_size; -- cgit v1.2.3 From e39f6ec1f9c1d6a7011adf6d95d8d80bad0586b1 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Tue, 30 Oct 2012 11:56:26 +0100 Subject: dma: mv_xor: rename mv_xor_platform_data to mv_xor_channel_data mv_xor_platform_data used to be the platform_data structure associated to the 'mv_xor' driver. This driver no longer exists, and this data structure really contains the properties of each XOR channel part of a given XOR engine. Therefore 'struct mv_xor_channel_data' is a more appropriate name. Signed-off-by: Thomas Petazzoni --- include/linux/platform_data/dma-mv_xor.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/dma-mv_xor.h b/include/linux/platform_data/dma-mv_xor.h index 4a0980b14c9b..40ea3d5f5b9f 100644 --- a/include/linux/platform_data/dma-mv_xor.h +++ b/include/linux/platform_data/dma-mv_xor.h @@ -12,14 +12,14 @@ #define MV_XOR_SHARED_NAME "mv_xor_shared" -struct mv_xor_platform_data { +struct mv_xor_channel_data { int hw_id; dma_cap_mask_t cap_mask; size_t pool_size; }; struct mv_xor_shared_platform_data { - struct mv_xor_platform_data *channels; + struct mv_xor_channel_data *channels; }; #endif -- cgit v1.2.3 From 7dde453d628687c0e991cfc55c9fd299a804aee6 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Tue, 30 Oct 2012 11:58:14 +0100 Subject: dma: mv_xor: rename mv_xor_shared_platform_data to mv_xor_platform_data 'struct mv_xor_shared_platform_data' used to be the platform_data structure for the 'mv_xor_shared', but this driver is going to be renamed simply 'mv_xor', so also rename its platform_data structure accordingly. Signed-off-by: Thomas Petazzoni --- include/linux/platform_data/dma-mv_xor.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/dma-mv_xor.h b/include/linux/platform_data/dma-mv_xor.h index 40ea3d5f5b9f..82a5f4b84afe 100644 --- a/include/linux/platform_data/dma-mv_xor.h +++ b/include/linux/platform_data/dma-mv_xor.h @@ -18,7 +18,7 @@ struct mv_xor_channel_data { size_t pool_size; }; -struct mv_xor_shared_platform_data { +struct mv_xor_platform_data { struct mv_xor_channel_data *channels; }; -- cgit v1.2.3 From 0dddee7a7d42192267ebef0fe15be8b296b665c8 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Tue, 30 Oct 2012 11:59:42 +0100 Subject: dma: mv_xor: change the driver name to 'mv_xor' Since we got rid of the per-XOR channel 'mv_xor' driver, now the per-XOR engine driver that used to be called 'mv_xor_shared' can simply be named 'mv_xor'. Signed-off-by: Thomas Petazzoni --- include/linux/platform_data/dma-mv_xor.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/dma-mv_xor.h b/include/linux/platform_data/dma-mv_xor.h index 82a5f4b84afe..367bb216c4a7 100644 --- a/include/linux/platform_data/dma-mv_xor.h +++ b/include/linux/platform_data/dma-mv_xor.h @@ -10,7 +10,7 @@ #include #include -#define MV_XOR_SHARED_NAME "mv_xor_shared" +#define MV_XOR_NAME "mv_xor" struct mv_xor_channel_data { int hw_id; -- cgit v1.2.3 From 9aedbdbab39c8aa58c0b2a0791fb10df6eebc123 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Thu, 15 Nov 2012 15:36:37 +0100 Subject: dma: mv_xor: remove hw_id field from platform_data There is no need for the platform_data to give this ID, it is simply the channel number, so we can compute it inside the driver when registering the channels. Signed-off-by: Thomas Petazzoni --- include/linux/platform_data/dma-mv_xor.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/dma-mv_xor.h b/include/linux/platform_data/dma-mv_xor.h index 367bb216c4a7..b18dc2496186 100644 --- a/include/linux/platform_data/dma-mv_xor.h +++ b/include/linux/platform_data/dma-mv_xor.h @@ -13,7 +13,6 @@ #define MV_XOR_NAME "mv_xor" struct mv_xor_channel_data { - int hw_id; dma_cap_mask_t cap_mask; size_t pool_size; }; -- cgit v1.2.3 From b503fa01990f6875640339d8f4ba98dbc068f821 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Thu, 15 Nov 2012 15:55:30 +0100 Subject: dma: mv_xor: remove the pool_size from platform_data The pool_size is always PAGE_SIZE, and since it is a software configuration paramter (and not a hardware description parameter), we cannot make it part of the Device Tree binding, so we'd better remove it from the platform_data as well. Signed-off-by: Thomas Petazzoni --- include/linux/platform_data/dma-mv_xor.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/dma-mv_xor.h b/include/linux/platform_data/dma-mv_xor.h index b18dc2496186..8ec18f64e396 100644 --- a/include/linux/platform_data/dma-mv_xor.h +++ b/include/linux/platform_data/dma-mv_xor.h @@ -14,7 +14,6 @@ struct mv_xor_channel_data { dma_cap_mask_t cap_mask; - size_t pool_size; }; struct mv_xor_platform_data { -- cgit v1.2.3 From c8d35c84f5494d8d294205b598f927a11fd41f34 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Fri, 2 Nov 2012 12:24:03 -0700 Subject: ARM: OMAP2+: Move plat/iovmm.h to include/linux/omap-iommu.h Looks like the iommu framework does not have generic functions exported for all the needs yet. The hardware specific functions are defined in files like intel-iommu.h and amd-iommu.h. Follow the same standard for omap-iommu.h. This is needed because we are removing plat and mach includes for ARM common zImage support. Further work should continue in the iommu framework context as only pure platform data will be communicated from arch/arm/*omap*/* code to the iommu framework. Cc: Ido Yariv Cc: Laurent Pinchart Cc: Omar Ramirez Luna Cc: linux-media@vger.kernel.org Acked-by: Mauro Carvalho Chehab Acked-by: Ohad Ben-Cohen Acked-by: Joerg Roedel Signed-off-by: Tony Lindgren --- include/linux/omap-iommu.h | 52 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 include/linux/omap-iommu.h (limited to 'include/linux') diff --git a/include/linux/omap-iommu.h b/include/linux/omap-iommu.h new file mode 100644 index 000000000000..cac78de09c07 --- /dev/null +++ b/include/linux/omap-iommu.h @@ -0,0 +1,52 @@ +/* + * omap iommu: simple virtual address space management + * + * Copyright (C) 2008-2009 Nokia Corporation + * + * Written by Hiroshi DOYU + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _INTEL_IOMMU_H_ +#define _INTEL_IOMMU_H_ + +struct iovm_struct { + struct omap_iommu *iommu; /* iommu object which this belongs to */ + u32 da_start; /* area definition */ + u32 da_end; + u32 flags; /* IOVMF_: see below */ + struct list_head list; /* linked in ascending order */ + const struct sg_table *sgt; /* keep 'page' <-> 'da' mapping */ + void *va; /* mpu side mapped address */ +}; + +#define MMU_RAM_ENDIAN_SHIFT 9 +#define MMU_RAM_ENDIAN_LITTLE (0 << MMU_RAM_ENDIAN_SHIFT) +#define MMU_RAM_ELSZ_8 (0 << MMU_RAM_ELSZ_SHIFT) +#define IOVMF_ENDIAN_LITTLE MMU_RAM_ENDIAN_LITTLE +#define MMU_RAM_ELSZ_SHIFT 7 +#define IOVMF_ELSZ_8 MMU_RAM_ELSZ_8 + +struct iommu_domain; + +extern struct iovm_struct *omap_find_iovm_area(struct device *dev, u32 da); +extern u32 +omap_iommu_vmap(struct iommu_domain *domain, struct device *dev, u32 da, + const struct sg_table *sgt, u32 flags); +extern struct sg_table *omap_iommu_vunmap(struct iommu_domain *domain, + struct device *dev, u32 da); +extern u32 +omap_iommu_vmalloc(struct iommu_domain *domain, struct device *dev, + u32 da, size_t bytes, u32 flags); +extern void +omap_iommu_vfree(struct iommu_domain *domain, struct device *dev, + const u32 da); +extern void *omap_da_to_va(struct device *dev, u32 da); + +extern void omap_iommu_save_ctx(struct device *dev); +extern void omap_iommu_restore_ctx(struct device *dev); + +#endif -- cgit v1.2.3 From 2ab7c84815cffd5fe4946a472fc67fefa8ac3c29 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Fri, 2 Nov 2012 12:24:14 -0700 Subject: ARM: OMAP2+: Move iommu/iovmm headers to platform_data Move iommu/iovmm headers from plat/ to platform_data/ as part of the single zImage work. Partially based on an earlier version by Ido Yariv . Cc: Ido Yariv Cc: Laurent Pinchart Cc: Omar Ramirez Luna Acked-by: Mauro Carvalho Chehab Acked-by: Ohad Ben-Cohen Acked-by: Joerg Roedel Signed-off-by: Tony Lindgren --- include/linux/platform_data/iommu-omap.h | 49 ++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 include/linux/platform_data/iommu-omap.h (limited to 'include/linux') diff --git a/include/linux/platform_data/iommu-omap.h b/include/linux/platform_data/iommu-omap.h new file mode 100644 index 000000000000..c677b9f2fefa --- /dev/null +++ b/include/linux/platform_data/iommu-omap.h @@ -0,0 +1,49 @@ +/* + * omap iommu: main structures + * + * Copyright (C) 2008-2009 Nokia Corporation + * + * Written by Hiroshi DOYU + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#define MMU_REG_SIZE 256 + +/** + * struct iommu_arch_data - omap iommu private data + * @name: name of the iommu device + * @iommu_dev: handle of the iommu device + * + * This is an omap iommu private data object, which binds an iommu user + * to its iommu device. This object should be placed at the iommu user's + * dev_archdata so generic IOMMU API can be used without having to + * utilize omap-specific plumbing anymore. + */ +struct omap_iommu_arch_data { + const char *name; + struct omap_iommu *iommu_dev; +}; + +/** + * struct omap_mmu_dev_attr - OMAP mmu device attributes for omap_hwmod + * @da_start: device address where the va space starts. + * @da_end: device address where the va space ends. + * @nr_tlb_entries: number of entries supported by the translation + * look-aside buffer (TLB). + */ +struct omap_mmu_dev_attr { + u32 da_start; + u32 da_end; + int nr_tlb_entries; +}; + +struct iommu_platform_data { + const char *name; + const char *clk_name; + const int nr_tlb_entries; + u32 da_start; + u32 da_end; +}; -- cgit v1.2.3 From 78026a6fde8f7b0ca77c059da11f476d69dfde3b Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Tue, 20 Nov 2012 13:36:00 +0000 Subject: iio:imu:adis: Add debugfs register access support Provide a IIO debugfs register access function for the ADIS library. This function can be used by individual drivers to allow raw register access via debugfs. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- include/linux/iio/imu/adis.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h index 8c3304d44b97..fce7bc3ba0b5 100644 --- a/include/linux/iio/imu/adis.h +++ b/include/linux/iio/imu/adis.h @@ -183,4 +183,15 @@ static inline void adis_remove_trigger(struct adis *adis) #endif /* CONFIG_IIO_BUFFER */ +#ifdef CONFIG_DEBUG_FS + +int adis_debugfs_reg_access(struct iio_dev *indio_dev, + unsigned int reg, unsigned int writeval, unsigned int *readval); + +#else + +#define adis_debugfs_reg_access NULL + +#endif + #endif -- cgit v1.2.3 From 57a1228a06b7a5939a8b0078a92b44fa30855bcb Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Tue, 20 Nov 2012 13:36:00 +0000 Subject: iio:imu:adis: Add support for 32bit registers Some of the newer generation devices from the ADIS16XXX family have 32bit wide register which spans two 16bit wide registers. This patch adds support for reading and writing a 32bit wide register. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- include/linux/iio/imu/adis.h | 81 +++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 77 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h index fce7bc3ba0b5..6402a08c0e65 100644 --- a/include/linux/iio/imu/adis.h +++ b/include/linux/iio/imu/adis.h @@ -53,7 +53,7 @@ struct adis { struct spi_transfer *xfer; void *buffer; - uint8_t tx[8] ____cacheline_aligned; + uint8_t tx[10] ____cacheline_aligned; uint8_t rx[4]; }; @@ -61,9 +61,82 @@ int adis_init(struct adis *adis, struct iio_dev *indio_dev, struct spi_device *spi, const struct adis_data *data); int adis_reset(struct adis *adis); -int adis_write_reg_8(struct adis *adis, unsigned int reg, uint8_t val); -int adis_write_reg_16(struct adis *adis, unsigned int reg, uint16_t val); -int adis_read_reg_16(struct adis *adis, unsigned int reg, uint16_t *val); +int adis_write_reg(struct adis *adis, unsigned int reg, + unsigned int val, unsigned int size); +int adis_read_reg(struct adis *adis, unsigned int reg, + unsigned int *val, unsigned int size); + +/** + * adis_write_reg_8() - Write single byte to a register + * @adis: The adis device + * @reg: The address of the register to be written + * @value: The value to write + */ +static inline int adis_write_reg_8(struct adis *adis, unsigned int reg, + uint8_t val) +{ + return adis_write_reg(adis, reg, val, 1); +} + +/** + * adis_write_reg_16() - Write 2 bytes to a pair of registers + * @adis: The adis device + * @reg: The address of the lower of the two registers + * @value: Value to be written + */ +static inline int adis_write_reg_16(struct adis *adis, unsigned int reg, + uint16_t val) +{ + return adis_write_reg(adis, reg, val, 2); +} + +/** + * adis_write_reg_32() - write 4 bytes to four registers + * @adis: The adis device + * @reg: The address of the lower of the four register + * @value: Value to be written + */ +static inline int adis_write_reg_32(struct adis *adis, unsigned int reg, + uint32_t val) +{ + return adis_write_reg(adis, reg, val, 4); +} + +/** + * adis_read_reg_16() - read 2 bytes from a 16-bit register + * @adis: The adis device + * @reg: The address of the lower of the two registers + * @val: The value read back from the device + */ +static inline int adis_read_reg_16(struct adis *adis, unsigned int reg, + uint16_t *val) +{ + unsigned int tmp; + int ret; + + ret = adis_read_reg(adis, reg, &tmp, 2); + *val = tmp; + + return ret; +} + +/** + * adis_read_reg_32() - read 4 bytes from a 32-bit register + * @adis: The adis device + * @reg: The address of the lower of the two registers + * @val: The value read back from the device + */ +static inline int adis_read_reg_32(struct adis *adis, unsigned int reg, + uint32_t *val) +{ + unsigned int tmp; + int ret; + + ret = adis_read_reg(adis, reg, &tmp, 4); + *val = tmp; + + return ret; +} int adis_enable_irq(struct adis *adis, bool enable); int adis_check_status(struct adis *adis); -- cgit v1.2.3 From 484a0bf091c93c379e6524a17bb037c33c898e01 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Tue, 20 Nov 2012 13:36:00 +0000 Subject: iio:imu:adis: Add paging support Some of the newer generation devices from the ADIS16XXX series have more registers than what can be supported with the current register addressing scheme. These devices implement register paging to support a larger register range. Each page is 128 registers large and the currently active page can be selected via register 0x00 in each page. This patch implements transparent paging inside the common adis library. The register read/write interface stays the same and when a register is accessed the library automatically switches to the correct page if it is not already selected. The page number is encoded in the upper bits of the register number, e.g. register 0x5 of page 1 is 0x85. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- include/linux/iio/imu/adis.h | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h index 6402a08c0e65..e82cd0827e91 100644 --- a/include/linux/iio/imu/adis.h +++ b/include/linux/iio/imu/adis.h @@ -14,8 +14,11 @@ #include #include -#define ADIS_WRITE_REG(reg) (0x80 | (reg)) -#define ADIS_READ_REG(reg) (reg) +#define ADIS_WRITE_REG(reg) ((0x80 | (reg))) +#define ADIS_READ_REG(reg) ((reg) & 0x7f) + +#define ADIS_PAGE_SIZE 0x80 +#define ADIS_REG_PAGE_ID 0x00 /** * struct adis_data - ADIS chip variant specific data @@ -40,6 +43,8 @@ struct adis_data { const char * const *status_error_msgs; unsigned int status_error_mask; + + bool has_paging; }; struct adis { @@ -51,6 +56,7 @@ struct adis { struct mutex txrx_lock; struct spi_message msg; struct spi_transfer *xfer; + unsigned int current_page; void *buffer; uint8_t tx[10] ____cacheline_aligned; -- cgit v1.2.3 From c4f0c6936762ecd6b453275611a785dfdee0d417 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Tue, 20 Nov 2012 13:36:00 +0000 Subject: iio: Add pressure channel type This patch adds support for a new IIO channel type for pressure measurements. This can for example be used for barometric pressure sensors. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- include/linux/iio/types.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h index 87b196a2d698..88bf0f0d27b4 100644 --- a/include/linux/iio/types.h +++ b/include/linux/iio/types.h @@ -28,6 +28,7 @@ enum iio_chan_type { IIO_CAPACITANCE, IIO_ALTVOLTAGE, IIO_CCT, + IIO_PRESSURE, }; enum iio_modifier { -- cgit v1.2.3 From 6807d7211327dbdd8df3692f3d26ca711514ba71 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Tue, 20 Nov 2012 13:36:00 +0000 Subject: iio: Factor out fixed point number parsing into its own function Factor out the code for parsing fixed point numbers into its own function and make this function globally available. This allows us to reuse the code to parse fixed point numbers in individual IIO drivers. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- include/linux/iio/iio.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index adca93a999a7..da8c776ba0bd 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -620,6 +620,9 @@ static inline struct dentry *iio_get_debugfs_dentry(struct iio_dev *indio_dev) }; #endif +int iio_str_to_fixpoint(const char *str, int fract_mult, int *integer, + int *fract); + /** * IIO_DEGREE_TO_RAD() - Convert degree to rad * @deg: A value in degree -- cgit v1.2.3 From 2f3abe6cbb6c963ac790b40936b6761c9f0497b4 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Tue, 20 Nov 2012 13:36:00 +0000 Subject: iio:imu: Add support for the ADIS16480 and similar IMUs This patch adds support for the ADIS16375, ADIS16480, ADIS16485, ADIS16488 6 degree to 10 degree of freedom IMUs. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- include/linux/iio/imu/adis.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h index e82cd0827e91..ff781dca2e9a 100644 --- a/include/linux/iio/imu/adis.h +++ b/include/linux/iio/imu/adis.h @@ -20,6 +20,8 @@ #define ADIS_PAGE_SIZE 0x80 #define ADIS_REG_PAGE_ID 0x00 +struct adis; + /** * struct adis_data - ADIS chip variant specific data * @read_delay: SPI delay for read operations in us @@ -44,6 +46,8 @@ struct adis_data { const char * const *status_error_msgs; unsigned int status_error_mask; + int (*enable_irq)(struct adis *adis, bool enable); + bool has_paging; }; -- cgit v1.2.3 From 95f8a082b9b1ead0c2859f2a7b1ac91ff63d8765 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 21 Nov 2012 00:21:50 +0100 Subject: ACPI / driver core: Introduce struct acpi_dev_node and related macros To avoid adding an ACPI handle pointer to struct device on architectures that don't use ACPI, or generally when CONFIG_ACPI is not set, in which cases that pointer is useless, define struct acpi_dev_node that will contain the handle pointer if CONFIG_ACPI is set and will be empty otherwise and use it to represent the ACPI device node field in struct device. In addition to that define macros for reading and setting the ACPI handle of a device that don't generate code when CONFIG_ACPI is unset. Modify the ACPI subsystem to use those macros instead of referring to the given device's ACPI handle directly. Signed-off-by: Rafael J. Wysocki Reviewed-by: Mika Westerberg Acked-by: Greg Kroah-Hartman --- include/linux/device.h | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index cc3aee57a46e..05292e488346 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -578,6 +578,12 @@ struct device_dma_parameters { unsigned long segment_boundary_mask; }; +struct acpi_dev_node { +#ifdef CONFIG_ACPI + void *handle; +#endif +}; + /** * struct device - The basic device structure * @parent: The device's "parent" device, the device to which it is attached. @@ -618,7 +624,7 @@ struct device_dma_parameters { * @dma_mem: Internal for coherent mem override. * @archdata: For arch-specific additions. * @of_node: Associated device tree node. - * @acpi_handle: Associated ACPI device node's namespace handle. + * @acpi_node: Associated ACPI device node. * @devt: For creating the sysfs "dev". * @id: device instance * @devres_lock: Spinlock to protect the resource of the device. @@ -683,7 +689,7 @@ struct device { struct dev_archdata archdata; struct device_node *of_node; /* associated device tree node */ - void *acpi_handle; /* associated ACPI device node */ + struct acpi_dev_node acpi_node; /* associated ACPI device node */ dev_t devt; /* dev_t, creates the sysfs "dev" */ u32 id; /* device instance */ @@ -704,6 +710,14 @@ static inline struct device *kobj_to_dev(struct kobject *kobj) return container_of(kobj, struct device, kobj); } +#ifdef CONFIG_ACPI +#define ACPI_HANDLE(dev) ((dev)->acpi_node.handle) +#define ACPI_HANDLE_SET(dev, _handle_) (dev)->acpi_node.handle = (_handle_) +#else +#define ACPI_HANDLE(dev) (NULL) +#define ACPI_HANDLE_SET(dev, _handle_) do { } while (0) +#endif + /* Get the wakeup routines, which depend on struct device */ #include -- cgit v1.2.3 From 863f9f30e6c1e30cb19a0cd17c5cf8879257dfd7 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 21 Nov 2012 00:21:59 +0100 Subject: ACPI / platform: Initialize ACPI handles of platform devices in advance The current platform device creation and registration code in acpi_create_platform_device() is quite convoluted. This function takes an ACPI device node as an argument and eventually calls platform_device_register_resndata() to create and register a platform device object on the basis of the information contained in that code. However, it doesn't associate the new platform device with the ACPI node directly, but instead it relies on acpi_platform_notify(), called from within device_add(), to find that ACPI node again with the help of acpi_platform_find_device() and acpi_platform_match() and then attach the new platform device to it. This causes an additional ACPI namespace walk to happen and is clearly suboptimal. Use the observation that it is now possible to initialize the ACPI handle of a device before calling device_add() for it to make this code more straightforward. Namely, add a new field to struct platform_device_info allowing us to pass the ACPI handle of interest to platform_device_register_full(), which will then use it to initialize the new device's ACPI handle before registering it. This will cause acpi_platform_notify() to use the ACPI handle from the device structure directly instead of using the .find_device() routine provided by the device's bus type. In consequence, acpi_platform_bus, acpi_platform_find_device(), and acpi_platform_match() are not necessary any more, so remove them. Signed-off-by: Rafael J. Wysocki Reviewed-by: Mika Westerberg Acked-by: Greg Kroah-Hartman --- include/linux/platform_device.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h index 5711e9525a2a..a9ded9a3c175 100644 --- a/include/linux/platform_device.h +++ b/include/linux/platform_device.h @@ -55,6 +55,7 @@ extern int platform_add_devices(struct platform_device **, int); struct platform_device_info { struct device *parent; + struct acpi_dev_node acpi_node; const char *name; int id; -- cgit v1.2.3 From 76aad392f75e6ce5be3f106554e16f7ff96543e5 Mon Sep 17 00:00:00 2001 From: Davide Ciminaghi Date: Tue, 20 Nov 2012 15:20:30 +0100 Subject: regmap: introduce tables for readable/writeable/volatile/precious checks Many of the regmap enabled drivers implementing one or more of the readable, writeable, volatile and precious methods use the same code pattern: return ((reg >= X && reg <= Y) || (reg >= W && reg <= Z) || ...) Switch to a data driven approach, using tables to describe readable/writeable/volatile and precious registers ranges instead. The table based check can still be overridden by passing the usual function pointers via struct regmap_config. Signed-off-by: Davide Ciminaghi Signed-off-by: Mark Brown --- include/linux/regmap.h | 83 +++++++++++++++++++++++++++++++++++++++++++------- 1 file changed, 72 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 0e819e3cebce..3bdb1f9a5b43 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -53,6 +53,36 @@ enum regmap_endian { REGMAP_ENDIAN_NATIVE, }; +/** + * A register range, used for access related checks + * (readable/writeable/volatile/precious checks) + * + * @range_min: address of first register + * @range_max: address of last register + */ +struct regmap_range { + unsigned int range_min; + unsigned int range_max; +}; + +/* + * A table of ranges including some yes ranges and some no ranges. + * If a register belongs to a no_range, the corresponding check function + * will return false. If a register belongs to a yes range, the corresponding + * check function will return true. "no_ranges" are searched first. + * + * @yes_ranges : pointer to an array of regmap ranges used as "yes ranges" + * @n_yes_ranges: size of the above array + * @no_ranges: pointer to an array of regmap ranges used as "no ranges" + * @n_no_ranges: size of the above array + */ +struct regmap_access_table { + const struct regmap_range *yes_ranges; + unsigned int n_yes_ranges; + const struct regmap_range *no_ranges; + unsigned int n_no_ranges; +}; + typedef void (*regmap_lock)(void *); typedef void (*regmap_unlock)(void *); @@ -70,22 +100,39 @@ typedef void (*regmap_unlock)(void *); * @val_bits: Number of bits in a register value, mandatory. * * @writeable_reg: Optional callback returning true if the register - * can be written to. + * can be written to. If this field is NULL but wr_table + * (see below) is not, the check is performed on such table + * (a register is writeable if it belongs to one of the ranges + * specified by wr_table). * @readable_reg: Optional callback returning true if the register - * can be read from. + * can be read from. If this field is NULL but rd_table + * (see below) is not, the check is performed on such table + * (a register is readable if it belongs to one of the ranges + * specified by rd_table). * @volatile_reg: Optional callback returning true if the register - * value can't be cached. + * value can't be cached. If this field is NULL but + * volatile_table (see below) is not, the check is performed on + * such table (a register is volatile if it belongs to one of + * the ranges specified by volatile_table). * @precious_reg: Optional callback returning true if the rgister - * should not be read outside of a call from the driver - * (eg, a clear on read interrupt status register). - * @lock: Optional lock callback (overrides regmap's default lock - * function, based on spinlock or mutex). - * @unlock: As above for unlocking. - * @lock_arg: this field is passed as the only argument of lock/unlock - * functions (ignored in case regular lock/unlock functions - * are not overridden). + * should not be read outside of a call from the driver + * (eg, a clear on read interrupt status register). If this + * field is NULL but precious_table (see below) is not, the + * check is performed on such table (a register is precious if + * it belongs to one of the ranges specified by precious_table). + * @lock: Optional lock callback (overrides regmap's default lock + * function, based on spinlock or mutex). + * @unlock: As above for unlocking. + * @lock_arg: this field is passed as the only argument of lock/unlock + * functions (ignored in case regular lock/unlock functions + * are not overridden). * * @max_register: Optional, specifies the maximum valid register index. + * @wr_table: Optional, points to a struct regmap_access_table specifying + * valid ranges for write access. + * @rd_table: As above, for read access. + * @volatile_table: As above, for volatile registers. + * @precious_table: As above, for precious registers. * @reg_defaults: Power on reset values for registers (for use with * register cache support). * @num_reg_defaults: Number of elements in reg_defaults. @@ -130,6 +177,10 @@ struct regmap_config { void *lock_arg; unsigned int max_register; + const struct regmap_access_table *wr_table; + const struct regmap_access_table *rd_table; + const struct regmap_access_table *volatile_table; + const struct regmap_access_table *precious_table; const struct reg_default *reg_defaults; unsigned int num_reg_defaults; enum regcache_type cache_type; @@ -280,6 +331,16 @@ void regcache_mark_dirty(struct regmap *map); int regmap_register_patch(struct regmap *map, const struct reg_default *regs, int num_regs); +static inline bool regmap_reg_in_range(unsigned int reg, + const struct regmap_range *range) +{ + return reg >= range->range_min && reg <= range->range_max; +} + +bool regmap_reg_in_ranges(unsigned int reg, + const struct regmap_range *ranges, + unsigned int nranges); + /** * Description of an IRQ for the generic regmap irq_chip. * -- cgit v1.2.3 From be193249b4178158c0f697cb452b2bbf0cb16361 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 20 Nov 2012 10:15:19 +0530 Subject: dt: add helper function to read u8 & u16 variables & arrays This adds following helper routines: - of_property_read_u8_array() - of_property_read_u16_array() - of_property_read_u8() - of_property_read_u16() This expects arrays from DT to be passed as: - u8 array: property = /bits/ 8 <0x50 0x60 0x70>; - u16 array: property = /bits/ 16 <0x5000 0x6000 0x7000>; Signed-off-by: Viresh Kumar Reviewed-by: Stephen Warren Signed-off-by: Rob Herring --- include/linux/of.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index 857dde984a6e..ab1af0e14659 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -223,6 +223,10 @@ extern struct device_node *of_find_node_with_property( extern struct property *of_find_property(const struct device_node *np, const char *name, int *lenp); +extern int of_property_read_u8_array(const struct device_node *np, + const char *propname, u8 *out_values, size_t sz); +extern int of_property_read_u16_array(const struct device_node *np, + const char *propname, u16 *out_values, size_t sz); extern int of_property_read_u32_array(const struct device_node *np, const char *propname, u32 *out_values, @@ -364,6 +368,18 @@ static inline struct device_node *of_find_compatible_node( return NULL; } +static inline int of_property_read_u8_array(const struct device_node *np, + const char *propname, u8 *out_values, size_t sz) +{ + return -ENOSYS; +} + +static inline int of_property_read_u16_array(const struct device_node *np, + const char *propname, u16 *out_values, size_t sz) +{ + return -ENOSYS; +} + static inline int of_property_read_u32_array(const struct device_node *np, const char *propname, u32 *out_values, size_t sz) @@ -470,6 +486,20 @@ static inline bool of_property_read_bool(const struct device_node *np, return prop ? true : false; } +static inline int of_property_read_u8(const struct device_node *np, + const char *propname, + u8 *out_value) +{ + return of_property_read_u8_array(np, propname, out_value, 1); +} + +static inline int of_property_read_u16(const struct device_node *np, + const char *propname, + u16 *out_value) +{ + return of_property_read_u16_array(np, propname, out_value, 1); +} + static inline int of_property_read_u32(const struct device_node *np, const char *propname, u32 *out_value) -- cgit v1.2.3 From 50c8af4cf98fd97d6779f244215154e4c89699c7 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Tue, 20 Nov 2012 16:12:20 -0700 Subject: of: introduce for_each_matching_node_and_match() The following pattern of code is tempting: for_each_matching_node(np, table) { match = of_match_node(table, np); However, this results in iterating over table twice; the second time inside of_match_node(). The implementation of for_each_matching_node() already found the match, so this is redundant. Invent new function of_find_matching_node_and_match() and macro for_each_matching_node_and_match() to remove the double iteration, thus transforming the above code to: for_each_matching_node_and_match(np, table, &match) Signed-off-by: Stephen Warren Signed-off-by: Rob Herring --- include/linux/of.h | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index ab1af0e14659..13e0aacb4d9f 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -179,11 +179,22 @@ extern struct device_node *of_find_compatible_node(struct device_node *from, #define for_each_compatible_node(dn, type, compatible) \ for (dn = of_find_compatible_node(NULL, type, compatible); dn; \ dn = of_find_compatible_node(dn, type, compatible)) -extern struct device_node *of_find_matching_node(struct device_node *from, - const struct of_device_id *matches); +extern struct device_node *of_find_matching_node_and_match( + struct device_node *from, + const struct of_device_id *matches, + const struct of_device_id **match); +static inline struct device_node *of_find_matching_node( + struct device_node *from, + const struct of_device_id *matches) +{ + return of_find_matching_node_and_match(from, matches, NULL); +} #define for_each_matching_node(dn, matches) \ for (dn = of_find_matching_node(NULL, matches); dn; \ dn = of_find_matching_node(dn, matches)) +#define for_each_matching_node_and_match(dn, matches, match) \ + for (dn = of_find_matching_node_and_match(NULL, matches, match); \ + dn; dn = of_find_matching_node_and_match(dn, matches, match)) extern struct device_node *of_find_node_by_path(const char *path); extern struct device_node *of_find_node_by_phandle(phandle handle); extern struct device_node *of_get_parent(const struct device_node *node); -- cgit v1.2.3 From 3f0f8670608766ef26a178d4e80cad3ce030fecc Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 20 Nov 2012 12:40:15 +0100 Subject: gpiolib: let gpiochip_add_pin_range() specify offset Like with commit 3c739ad0df5eb41cd7adad879eda6aa09879eb76 it is not always enough to specify all the pins of a gpio_chip from offset zero to be added to a pin map range, since the mapping from GPIO to pin controller may not be linear at all, but need to be broken into a few consecutive sub-ranges or 1-pin entries for complicated cases. The ranges may also be sparse. This alters the signature of the function to accept offsets into both the GPIO-chip local pinspace and the pin controller local pinspace. Reviewed-by: Stephen Warren Reviewed-by: Viresh Kumar Signed-off-by: Linus Walleij --- include/linux/gpio.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/gpio.h b/include/linux/gpio.h index 7ba2762abbc9..99861c65dd8b 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -233,7 +233,8 @@ static inline int irq_to_gpio(unsigned irq) static inline int gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name, - unsigned int pin_base, unsigned int npins) + unsigned int offset, unsigned int pin_base, + unsigned int npins) { WARN_ON(1); return -EINVAL; -- cgit v1.2.3 From 192c369c6165dff233f22aa70209a92b030d233d Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 20 Nov 2012 14:03:37 +0100 Subject: gpiolib: rename find_pinctrl_* Rename the function find_pinctrl_and_add_gpio_range() to pinctrl_find_and_add_gpio_range() so as to be consistent with the rest of the functions. Reviewed-by: Stephen Warren Reviewed-by: Viresh Kumar Signed-off-by: Linus Walleij --- include/linux/pinctrl/pinctrl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h index 4a58428bc793..7dee9acbd271 100644 --- a/include/linux/pinctrl/pinctrl.h +++ b/include/linux/pinctrl/pinctrl.h @@ -137,7 +137,7 @@ extern void pinctrl_add_gpio_ranges(struct pinctrl_dev *pctldev, extern void pinctrl_remove_gpio_range(struct pinctrl_dev *pctldev, struct pinctrl_gpio_range *range); -extern struct pinctrl_dev *find_pinctrl_and_add_gpio_range(const char *devname, +extern struct pinctrl_dev *pinctrl_find_and_add_gpio_range(const char *devname, struct pinctrl_gpio_range *range); #ifdef CONFIG_OF -- cgit v1.2.3 From 9afbefb227792a3c195085d662050dcca748f521 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 20 Nov 2012 14:25:07 +0100 Subject: pinctrl: add function to retrieve range from pin This adds a function to the pinctrl core to retrieve the GPIO range associated with a certain pin for a certain controller. This is needed when a pinctrl driver want to look up the corresponding struct gpio_chip for a certain pin. As the GPIO drivers can now create these ranges themselves, the pinctrl driver no longer knows about all its associated GPIO chips. Reviewed-by: Stephen Warren Reviewed-by: Viresh Kumar Signed-off-by: Linus Walleij --- include/linux/pinctrl/pinctrl.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h index 7dee9acbd271..04d6700d99af 100644 --- a/include/linux/pinctrl/pinctrl.h +++ b/include/linux/pinctrl/pinctrl.h @@ -139,6 +139,9 @@ extern void pinctrl_remove_gpio_range(struct pinctrl_dev *pctldev, extern struct pinctrl_dev *pinctrl_find_and_add_gpio_range(const char *devname, struct pinctrl_gpio_range *range); +extern struct pinctrl_gpio_range * +pinctrl_find_gpio_range_from_pin(struct pinctrl_dev *pctldev, + unsigned int pin); #ifdef CONFIG_OF extern struct pinctrl_dev *of_pinctrl_get(struct device_node *np); -- cgit v1.2.3 From 8604ac34eb19f7b02f8cf22c787fe30d96ad2651 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 20 Nov 2012 14:42:47 +0100 Subject: pinctrl/u300/coh901: stop spawning pinctrl from GPIO Let's stop spawning the pinctrl driver from the GPIO driver, we have these two mechanisms broken apart now, and they can each probe in isolation. If the GPIO driver cannot find its pin controller (pinctrl-u300), the pin controller core will tell it to defer probing. Reviewed-by: Stephen Warren Reviewed-by: Viresh Kumar Signed-off-by: Linus Walleij --- include/linux/platform_data/pinctrl-coh901.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/pinctrl-coh901.h b/include/linux/platform_data/pinctrl-coh901.h index 27a23b318cef..dfbc65d10484 100644 --- a/include/linux/platform_data/pinctrl-coh901.h +++ b/include/linux/platform_data/pinctrl-coh901.h @@ -13,12 +13,10 @@ * struct u300_gpio_platform - U300 GPIO platform data * @ports: number of GPIO block ports * @gpio_base: first GPIO number for this block (use a free range) - * @pinctrl_device: pin control device to spawn as child */ struct u300_gpio_platform { u8 ports; int gpio_base; - struct platform_device *pinctrl_device; }; #endif /* __MACH_U300_GPIO_U300_H */ -- cgit v1.2.3 From 2ccb0bcfb0dd2001b1a40048c1e407cd9a78bd3d Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Thu, 15 Nov 2012 16:36:33 +0800 Subject: pinctrl: generic: add input schmitt disable parameter In Marvell PXA/MMP silicons, input schmitt disable value is 0x40, not 0. So append new config parameter -- input schmitt disable. Signed-off-by: Haojian Zhuang Signed-off-by: Linus Walleij --- include/linux/pinctrl/pinconf-generic.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h index 4f0abb9f1c09..47a1bdd88878 100644 --- a/include/linux/pinctrl/pinconf-generic.h +++ b/include/linux/pinctrl/pinconf-generic.h @@ -46,11 +46,11 @@ * @PIN_CONFIG_DRIVE_OPEN_SOURCE: the pin will be driven with open source * (open emitter). Sending this config will enabale open drain mode, the * argument is ignored. + * @PIN_CONFIG_INPUT_SCHMITT_DISABLE: disable schmitt-trigger mode on the pin. * @PIN_CONFIG_INPUT_SCHMITT: this will configure an input pin to run in * schmitt-trigger mode. If the schmitt-trigger has adjustable hysteresis, * the threshold value is given on a custom format as argument when - * setting pins to this mode. The argument zero turns the schmitt trigger - * off. + * setting pins to this mode. * @PIN_CONFIG_INPUT_DEBOUNCE: this will configure the pin to debounce mode, * which means it will wait for signals to settle when reading inputs. The * argument gives the debounce time on a custom format. Setting the @@ -74,6 +74,7 @@ enum pin_config_param { PIN_CONFIG_DRIVE_PUSH_PULL, PIN_CONFIG_DRIVE_OPEN_DRAIN, PIN_CONFIG_DRIVE_OPEN_SOURCE, + PIN_CONFIG_INPUT_SCHMITT_DISABLE, PIN_CONFIG_INPUT_SCHMITT, PIN_CONFIG_INPUT_DEBOUNCE, PIN_CONFIG_POWER_SOURCE, -- cgit v1.2.3 From 316511c0134acec8f4ea730bd1897c7a1124a7c1 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 21 Nov 2012 08:48:09 +0100 Subject: gpiolib: rename pin range arguments To be crystal clear on what the arguments mean in this funtion dealing with both GPIO and PIN ranges with confusing naming, we now have gpio_offset and pin_offset and we are on the clear that these are offsets into the specific GPIO and pin controller respectively. The GPIO chip itself will of course keep track of the base offset into the global GPIO number space. Reviewed-by: Viresh Kumar Signed-off-by: Linus Walleij --- include/linux/gpio.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/gpio.h b/include/linux/gpio.h index 99861c65dd8b..bfe665621536 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -233,7 +233,7 @@ static inline int irq_to_gpio(unsigned irq) static inline int gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name, - unsigned int offset, unsigned int pin_base, + unsigned int gpio_offset, unsigned int pin_offset, unsigned int npins) { WARN_ON(1); -- cgit v1.2.3 From 1a8f85d402a2bf3b86c08c696a0adf36656f770a Mon Sep 17 00:00:00 2001 From: Philip Rakity Date: Tue, 20 Nov 2012 18:07:41 +0100 Subject: regulator: add missing prototype for regulator_is_supported_voltage avoids needs for CONFIG_REGULATOR in sdhci.c Signed-off-by: Philip Rakity Reviewed-by: Eric Miao Signed-off-by: Eric Miao Signed-off-by: Mark Brown --- include/linux/regulator/consumer.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h index c43cd3556b1f..4e3ec91bc639 100644 --- a/include/linux/regulator/consumer.h +++ b/include/linux/regulator/consumer.h @@ -358,6 +358,10 @@ static inline void regulator_set_drvdata(struct regulator *regulator, { } +static inline int regulator_count_voltages(struct regulator *regulator) +{ + return 0; +} #endif static inline int regulator_set_voltage_tol(struct regulator *regulator, -- cgit v1.2.3 From ae72ae676045274c82f3c25159a9dd7cfcf5ffae Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Nov 2012 11:02:55 -0500 Subject: NFSv4.1: Don't confuse CREATE_SESSION arguments and results Don't store the target request and response sizes in the same variables used to store the server's replies to those targets. Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index a9e76ee1adca..97c8f9191880 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -242,6 +242,9 @@ struct nfs4_session { struct nfs4_channel_attrs bc_attrs; struct nfs4_slot_table bc_slot_table; struct nfs_client *clp; + /* Create session arguments */ + unsigned int fc_target_max_rqst_sz; + unsigned int fc_target_max_resp_sz; }; #endif /* CONFIG_NFS_V4 */ -- cgit v1.2.3 From 933602e368c4452260c9bff4fbb3baba35cf987a Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 16 Nov 2012 12:12:38 -0500 Subject: NFSv4.1: Shrink struct nfs4_sequence_res by moving sr_renewal_time Store the renewal time inside the session slot instead. Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index a73ea89789d1..9cb1c63a70c2 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -187,6 +187,7 @@ struct nfs4_channel_attrs { /* nfs41 sessions slot seqid */ struct nfs4_slot { + unsigned long renewal_time; u32 seq_nr; }; @@ -200,7 +201,6 @@ struct nfs4_sequence_res { struct nfs4_session *sr_session; struct nfs4_slot *sr_slot; /* slot used to send request */ int sr_status; /* sequence operation status */ - unsigned long sr_renewal_time; u32 sr_status_flags; }; -- cgit v1.2.3 From 22a8578fca5a47e643bb4f70c232d0ec84db9e4e Mon Sep 17 00:00:00 2001 From: Ezequiel Garcia Date: Sat, 10 Nov 2012 13:08:20 -0300 Subject: mtd: mtd_blkdevs: Replace request handler kthread with a workqueue By replacing a kthread with a workqueue, the code is now a bit clearer. There's also a slight reduction of code size (numbers apply for x86): Before: text data bss dec hex filename 3248 36 0 3284 cd4 drivers/mtd/mtd_blkdevs.o After: text data bss dec hex filename 3150 36 0 3186 c72 drivers/mtd/mtd_blkdevs.o Due to lack of real hardware, tests have been performed on an emulated environment with mtdswap and mtdblock over nandsim devices. Some real testing should be done, before merging this patch. Signed-off-by: Ezequiel Garcia Signed-off-by: Artem Bityutskiy --- include/linux/mtd/blktrans.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mtd/blktrans.h b/include/linux/mtd/blktrans.h index ed270bd2e4df..4eb0a50d0c55 100644 --- a/include/linux/mtd/blktrans.h +++ b/include/linux/mtd/blktrans.h @@ -23,6 +23,7 @@ #include #include #include +#include struct hd_geometry; struct mtd_info; @@ -43,7 +44,8 @@ struct mtd_blktrans_dev { struct kref ref; struct gendisk *disk; struct attribute_group *disk_attributes; - struct task_struct *thread; + struct workqueue_struct *wq; + struct work_struct work; struct request_queue *rq; spinlock_t queue_lock; void *priv; -- cgit v1.2.3 From edd7eabc85e2f8d76a933b9639bebfe7f98861e4 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Wed, 14 Nov 2012 21:09:28 +0530 Subject: mfd: Add TI TPS80031 mfd core driver TPS80031/ TPS80032 Fully Integrated Power Management with Power Path and Battery Charger. The device provides five configurable step-down converters, 11 general purpose LDOs, USB OTG Module, ADC, RTC, 2 PWM, System Voltage Regulator/Battery Charger with Power Path from USB, 32K clock generator. Add the mfd core driver for TPS80031/TPS80032. Signed-off-by: Laxman Dewangan Reviwed-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/tps80031.h | 637 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 637 insertions(+) create mode 100644 include/linux/mfd/tps80031.h (limited to 'include/linux') diff --git a/include/linux/mfd/tps80031.h b/include/linux/mfd/tps80031.h new file mode 100644 index 000000000000..2c75c9c9318f --- /dev/null +++ b/include/linux/mfd/tps80031.h @@ -0,0 +1,637 @@ +/* + * tps80031.h -- TI TPS80031 and TI TPS80032 PMIC driver. + * + * Copyright (c) 2012, NVIDIA Corporation. + * + * Author: Laxman Dewangan + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind, + * whether express or implied; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307, USA + */ + +#ifndef __LINUX_MFD_TPS80031_H +#define __LINUX_MFD_TPS80031_H + +#include +#include + +/* Pull-ups/Pull-downs */ +#define TPS80031_CFG_INPUT_PUPD1 0xF0 +#define TPS80031_CFG_INPUT_PUPD2 0xF1 +#define TPS80031_CFG_INPUT_PUPD3 0xF2 +#define TPS80031_CFG_INPUT_PUPD4 0xF3 +#define TPS80031_CFG_LDO_PD1 0xF4 +#define TPS80031_CFG_LDO_PD2 0xF5 +#define TPS80031_CFG_SMPS_PD 0xF6 + +/* Real Time Clock */ +#define TPS80031_SECONDS_REG 0x00 +#define TPS80031_MINUTES_REG 0x01 +#define TPS80031_HOURS_REG 0x02 +#define TPS80031_DAYS_REG 0x03 +#define TPS80031_MONTHS_REG 0x04 +#define TPS80031_YEARS_REG 0x05 +#define TPS80031_WEEKS_REG 0x06 +#define TPS80031_ALARM_SECONDS_REG 0x08 +#define TPS80031_ALARM_MINUTES_REG 0x09 +#define TPS80031_ALARM_HOURS_REG 0x0A +#define TPS80031_ALARM_DAYS_REG 0x0B +#define TPS80031_ALARM_MONTHS_REG 0x0C +#define TPS80031_ALARM_YEARS_REG 0x0D +#define TPS80031_RTC_CTRL_REG 0x10 +#define TPS80031_RTC_STATUS_REG 0x11 +#define TPS80031_RTC_INTERRUPTS_REG 0x12 +#define TPS80031_RTC_COMP_LSB_REG 0x13 +#define TPS80031_RTC_COMP_MSB_REG 0x14 +#define TPS80031_RTC_RESET_STATUS_REG 0x16 + +/*PMC Master Module */ +#define TPS80031_PHOENIX_START_CONDITION 0x1F +#define TPS80031_PHOENIX_MSK_TRANSITION 0x20 +#define TPS80031_STS_HW_CONDITIONS 0x21 +#define TPS80031_PHOENIX_LAST_TURNOFF_STS 0x22 +#define TPS80031_VSYSMIN_LO_THRESHOLD 0x23 +#define TPS80031_VSYSMIN_HI_THRESHOLD 0x24 +#define TPS80031_PHOENIX_DEV_ON 0x25 +#define TPS80031_STS_PWR_GRP_STATE 0x27 +#define TPS80031_PH_CFG_VSYSLOW 0x28 +#define TPS80031_PH_STS_BOOT 0x29 +#define TPS80031_PHOENIX_SENS_TRANSITION 0x2A +#define TPS80031_PHOENIX_SEQ_CFG 0x2B +#define TPS80031_PRIMARY_WATCHDOG_CFG 0X2C +#define TPS80031_KEY_PRESS_DUR_CFG 0X2D +#define TPS80031_SMPS_LDO_SHORT_STS 0x2E + +/* PMC Slave Module - Broadcast */ +#define TPS80031_BROADCAST_ADDR_ALL 0x31 +#define TPS80031_BROADCAST_ADDR_REF 0x32 +#define TPS80031_BROADCAST_ADDR_PROV 0x33 +#define TPS80031_BROADCAST_ADDR_CLK_RST 0x34 + +/* PMC Slave Module SMPS Regulators */ +#define TPS80031_SMPS4_CFG_TRANS 0x41 +#define TPS80031_SMPS4_CFG_STATE 0x42 +#define TPS80031_SMPS4_CFG_VOLTAGE 0x44 +#define TPS80031_VIO_CFG_TRANS 0x47 +#define TPS80031_VIO_CFG_STATE 0x48 +#define TPS80031_VIO_CFG_FORCE 0x49 +#define TPS80031_VIO_CFG_VOLTAGE 0x4A +#define TPS80031_VIO_CFG_STEP 0x48 +#define TPS80031_SMPS1_CFG_TRANS 0x53 +#define TPS80031_SMPS1_CFG_STATE 0x54 +#define TPS80031_SMPS1_CFG_FORCE 0x55 +#define TPS80031_SMPS1_CFG_VOLTAGE 0x56 +#define TPS80031_SMPS1_CFG_STEP 0x57 +#define TPS80031_SMPS2_CFG_TRANS 0x59 +#define TPS80031_SMPS2_CFG_STATE 0x5A +#define TPS80031_SMPS2_CFG_FORCE 0x5B +#define TPS80031_SMPS2_CFG_VOLTAGE 0x5C +#define TPS80031_SMPS2_CFG_STEP 0x5D +#define TPS80031_SMPS3_CFG_TRANS 0x65 +#define TPS80031_SMPS3_CFG_STATE 0x66 +#define TPS80031_SMPS3_CFG_VOLTAGE 0x68 + +/* PMC Slave Module LDO Regulators */ +#define TPS80031_VANA_CFG_TRANS 0x81 +#define TPS80031_VANA_CFG_STATE 0x82 +#define TPS80031_VANA_CFG_VOLTAGE 0x83 +#define TPS80031_LDO2_CFG_TRANS 0x85 +#define TPS80031_LDO2_CFG_STATE 0x86 +#define TPS80031_LDO2_CFG_VOLTAGE 0x87 +#define TPS80031_LDO4_CFG_TRANS 0x89 +#define TPS80031_LDO4_CFG_STATE 0x8A +#define TPS80031_LDO4_CFG_VOLTAGE 0x8B +#define TPS80031_LDO3_CFG_TRANS 0x8D +#define TPS80031_LDO3_CFG_STATE 0x8E +#define TPS80031_LDO3_CFG_VOLTAGE 0x8F +#define TPS80031_LDO6_CFG_TRANS 0x91 +#define TPS80031_LDO6_CFG_STATE 0x92 +#define TPS80031_LDO6_CFG_VOLTAGE 0x93 +#define TPS80031_LDOLN_CFG_TRANS 0x95 +#define TPS80031_LDOLN_CFG_STATE 0x96 +#define TPS80031_LDOLN_CFG_VOLTAGE 0x97 +#define TPS80031_LDO5_CFG_TRANS 0x99 +#define TPS80031_LDO5_CFG_STATE 0x9A +#define TPS80031_LDO5_CFG_VOLTAGE 0x9B +#define TPS80031_LDO1_CFG_TRANS 0x9D +#define TPS80031_LDO1_CFG_STATE 0x9E +#define TPS80031_LDO1_CFG_VOLTAGE 0x9F +#define TPS80031_LDOUSB_CFG_TRANS 0xA1 +#define TPS80031_LDOUSB_CFG_STATE 0xA2 +#define TPS80031_LDOUSB_CFG_VOLTAGE 0xA3 +#define TPS80031_LDO7_CFG_TRANS 0xA5 +#define TPS80031_LDO7_CFG_STATE 0xA6 +#define TPS80031_LDO7_CFG_VOLTAGE 0xA7 + +/* PMC Slave Module External Control */ +#define TPS80031_REGEN1_CFG_TRANS 0xAE +#define TPS80031_REGEN1_CFG_STATE 0xAF +#define TPS80031_REGEN2_CFG_TRANS 0xB1 +#define TPS80031_REGEN2_CFG_STATE 0xB2 +#define TPS80031_SYSEN_CFG_TRANS 0xB4 +#define TPS80031_SYSEN_CFG_STATE 0xB5 + +/* PMC Slave Module Internal Control */ +#define TPS80031_NRESPWRON_CFG_TRANS 0xB7 +#define TPS80031_NRESPWRON_CFG_STATE 0xB8 +#define TPS80031_CLK32KAO_CFG_TRANS 0xBA +#define TPS80031_CLK32KAO_CFG_STATE 0xBB +#define TPS80031_CLK32KG_CFG_TRANS 0xBD +#define TPS80031_CLK32KG_CFG_STATE 0xBE +#define TPS80031_CLK32KAUDIO_CFG_TRANS 0xC0 +#define TPS80031_CLK32KAUDIO_CFG_STATE 0xC1 +#define TPS80031_VRTC_CFG_TRANS 0xC3 +#define TPS80031_VRTC_CFG_STATE 0xC4 +#define TPS80031_BIAS_CFG_TRANS 0xC6 +#define TPS80031_BIAS_CFG_STATE 0xC7 +#define TPS80031_VSYSMIN_HI_CFG_TRANS 0xC9 +#define TPS80031_VSYSMIN_HI_CFG_STATE 0xCA +#define TPS80031_RC6MHZ_CFG_TRANS 0xCC +#define TPS80031_RC6MHZ_CFG_STATE 0xCD +#define TPS80031_TMP_CFG_TRANS 0xCF +#define TPS80031_TMP_CFG_STATE 0xD0 + +/* PMC Slave Module resources assignment */ +#define TPS80031_PREQ1_RES_ASS_A 0xD7 +#define TPS80031_PREQ1_RES_ASS_B 0xD8 +#define TPS80031_PREQ1_RES_ASS_C 0xD9 +#define TPS80031_PREQ2_RES_ASS_A 0xDA +#define TPS80031_PREQ2_RES_ASS_B 0xDB +#define TPS80031_PREQ2_RES_ASS_C 0xDC +#define TPS80031_PREQ3_RES_ASS_A 0xDD +#define TPS80031_PREQ3_RES_ASS_B 0xDE +#define TPS80031_PREQ3_RES_ASS_C 0xDF + +/* PMC Slave Module Miscellaneous */ +#define TPS80031_SMPS_OFFSET 0xE0 +#define TPS80031_SMPS_MULT 0xE3 +#define TPS80031_MISC1 0xE4 +#define TPS80031_MISC2 0xE5 +#define TPS80031_BBSPOR_CFG 0xE6 +#define TPS80031_TMP_CFG 0xE7 + +/* Battery Charging Controller and Indicator LED */ +#define TPS80031_CONTROLLER_CTRL2 0xDA +#define TPS80031_CONTROLLER_VSEL_COMP 0xDB +#define TPS80031_CHARGERUSB_VSYSREG 0xDC +#define TPS80031_CHARGERUSB_VICHRG_PC 0xDD +#define TPS80031_LINEAR_CHRG_STS 0xDE +#define TPS80031_CONTROLLER_INT_MASK 0xE0 +#define TPS80031_CONTROLLER_CTRL1 0xE1 +#define TPS80031_CONTROLLER_WDG 0xE2 +#define TPS80031_CONTROLLER_STAT1 0xE3 +#define TPS80031_CHARGERUSB_INT_STATUS 0xE4 +#define TPS80031_CHARGERUSB_INT_MASK 0xE5 +#define TPS80031_CHARGERUSB_STATUS_INT1 0xE6 +#define TPS80031_CHARGERUSB_STATUS_INT2 0xE7 +#define TPS80031_CHARGERUSB_CTRL1 0xE8 +#define TPS80031_CHARGERUSB_CTRL2 0xE9 +#define TPS80031_CHARGERUSB_CTRL3 0xEA +#define TPS80031_CHARGERUSB_STAT1 0xEB +#define TPS80031_CHARGERUSB_VOREG 0xEC +#define TPS80031_CHARGERUSB_VICHRG 0xED +#define TPS80031_CHARGERUSB_CINLIMIT 0xEE +#define TPS80031_CHARGERUSB_CTRLLIMIT1 0xEF +#define TPS80031_CHARGERUSB_CTRLLIMIT2 0xF0 +#define TPS80031_LED_PWM_CTRL1 0xF4 +#define TPS80031_LED_PWM_CTRL2 0xF5 + +/* USB On-The-Go */ +#define TPS80031_BACKUP_REG 0xFA +#define TPS80031_USB_VENDOR_ID_LSB 0x00 +#define TPS80031_USB_VENDOR_ID_MSB 0x01 +#define TPS80031_USB_PRODUCT_ID_LSB 0x02 +#define TPS80031_USB_PRODUCT_ID_MSB 0x03 +#define TPS80031_USB_VBUS_CTRL_SET 0x04 +#define TPS80031_USB_VBUS_CTRL_CLR 0x05 +#define TPS80031_USB_ID_CTRL_SET 0x06 +#define TPS80031_USB_ID_CTRL_CLR 0x07 +#define TPS80031_USB_VBUS_INT_SRC 0x08 +#define TPS80031_USB_VBUS_INT_LATCH_SET 0x09 +#define TPS80031_USB_VBUS_INT_LATCH_CLR 0x0A +#define TPS80031_USB_VBUS_INT_EN_LO_SET 0x0B +#define TPS80031_USB_VBUS_INT_EN_LO_CLR 0x0C +#define TPS80031_USB_VBUS_INT_EN_HI_SET 0x0D +#define TPS80031_USB_VBUS_INT_EN_HI_CLR 0x0E +#define TPS80031_USB_ID_INT_SRC 0x0F +#define TPS80031_USB_ID_INT_LATCH_SET 0x10 +#define TPS80031_USB_ID_INT_LATCH_CLR 0x11 +#define TPS80031_USB_ID_INT_EN_LO_SET 0x12 +#define TPS80031_USB_ID_INT_EN_LO_CLR 0x13 +#define TPS80031_USB_ID_INT_EN_HI_SET 0x14 +#define TPS80031_USB_ID_INT_EN_HI_CLR 0x15 +#define TPS80031_USB_OTG_ADP_CTRL 0x16 +#define TPS80031_USB_OTG_ADP_HIGH 0x17 +#define TPS80031_USB_OTG_ADP_LOW 0x18 +#define TPS80031_USB_OTG_ADP_RISE 0x19 +#define TPS80031_USB_OTG_REVISION 0x1A + +/* Gas Gauge */ +#define TPS80031_FG_REG_00 0xC0 +#define TPS80031_FG_REG_01 0xC1 +#define TPS80031_FG_REG_02 0xC2 +#define TPS80031_FG_REG_03 0xC3 +#define TPS80031_FG_REG_04 0xC4 +#define TPS80031_FG_REG_05 0xC5 +#define TPS80031_FG_REG_06 0xC6 +#define TPS80031_FG_REG_07 0xC7 +#define TPS80031_FG_REG_08 0xC8 +#define TPS80031_FG_REG_09 0xC9 +#define TPS80031_FG_REG_10 0xCA +#define TPS80031_FG_REG_11 0xCB + +/* General Purpose ADC */ +#define TPS80031_GPADC_CTRL 0x2E +#define TPS80031_GPADC_CTRL2 0x2F +#define TPS80031_RTSELECT_LSB 0x32 +#define TPS80031_RTSELECT_ISB 0x33 +#define TPS80031_RTSELECT_MSB 0x34 +#define TPS80031_GPSELECT_ISB 0x35 +#define TPS80031_CTRL_P1 0x36 +#define TPS80031_RTCH0_LSB 0x37 +#define TPS80031_RTCH0_MSB 0x38 +#define TPS80031_RTCH1_LSB 0x39 +#define TPS80031_RTCH1_MSB 0x3A +#define TPS80031_GPCH0_LSB 0x3B +#define TPS80031_GPCH0_MSB 0x3C + +/* SIM, MMC and Battery Detection */ +#define TPS80031_SIMDEBOUNCING 0xEB +#define TPS80031_SIMCTRL 0xEC +#define TPS80031_MMCDEBOUNCING 0xED +#define TPS80031_MMCCTRL 0xEE +#define TPS80031_BATDEBOUNCING 0xEF + +/* Vibrator Driver and PWMs */ +#define TPS80031_VIBCTRL 0x9B +#define TPS80031_VIBMODE 0x9C +#define TPS80031_PWM1ON 0xBA +#define TPS80031_PWM1OFF 0xBB +#define TPS80031_PWM2ON 0xBD +#define TPS80031_PWM2OFF 0xBE + +/* Control Interface */ +#define TPS80031_INT_STS_A 0xD0 +#define TPS80031_INT_STS_B 0xD1 +#define TPS80031_INT_STS_C 0xD2 +#define TPS80031_INT_MSK_LINE_A 0xD3 +#define TPS80031_INT_MSK_LINE_B 0xD4 +#define TPS80031_INT_MSK_LINE_C 0xD5 +#define TPS80031_INT_MSK_STS_A 0xD6 +#define TPS80031_INT_MSK_STS_B 0xD7 +#define TPS80031_INT_MSK_STS_C 0xD8 +#define TPS80031_TOGGLE1 0x90 +#define TPS80031_TOGGLE2 0x91 +#define TPS80031_TOGGLE3 0x92 +#define TPS80031_PWDNSTATUS1 0x93 +#define TPS80031_PWDNSTATUS2 0x94 +#define TPS80031_VALIDITY0 0x17 +#define TPS80031_VALIDITY1 0x18 +#define TPS80031_VALIDITY2 0x19 +#define TPS80031_VALIDITY3 0x1A +#define TPS80031_VALIDITY4 0x1B +#define TPS80031_VALIDITY5 0x1C +#define TPS80031_VALIDITY6 0x1D +#define TPS80031_VALIDITY7 0x1E + +/* Version number related register */ +#define TPS80031_JTAGVERNUM 0x87 +#define TPS80031_EPROM_REV 0xDF + +/* GPADC Trimming Bits. */ +#define TPS80031_GPADC_TRIM0 0xCC +#define TPS80031_GPADC_TRIM1 0xCD +#define TPS80031_GPADC_TRIM2 0xCE +#define TPS80031_GPADC_TRIM3 0xCF +#define TPS80031_GPADC_TRIM4 0xD0 +#define TPS80031_GPADC_TRIM5 0xD1 +#define TPS80031_GPADC_TRIM6 0xD2 +#define TPS80031_GPADC_TRIM7 0xD3 +#define TPS80031_GPADC_TRIM8 0xD4 +#define TPS80031_GPADC_TRIM9 0xD5 +#define TPS80031_GPADC_TRIM10 0xD6 +#define TPS80031_GPADC_TRIM11 0xD7 +#define TPS80031_GPADC_TRIM12 0xD8 +#define TPS80031_GPADC_TRIM13 0xD9 +#define TPS80031_GPADC_TRIM14 0xDA +#define TPS80031_GPADC_TRIM15 0xDB +#define TPS80031_GPADC_TRIM16 0xDC +#define TPS80031_GPADC_TRIM17 0xDD +#define TPS80031_GPADC_TRIM18 0xDE + +/* TPS80031_CONTROLLER_STAT1 bit fields */ +#define TPS80031_CONTROLLER_STAT1_BAT_TEMP 0 +#define TPS80031_CONTROLLER_STAT1_BAT_REMOVED 1 +#define TPS80031_CONTROLLER_STAT1_VBUS_DET 2 +#define TPS80031_CONTROLLER_STAT1_VAC_DET 3 +#define TPS80031_CONTROLLER_STAT1_FAULT_WDG 4 +#define TPS80031_CONTROLLER_STAT1_LINCH_GATED 6 +/* TPS80031_CONTROLLER_INT_MASK bit filed */ +#define TPS80031_CONTROLLER_INT_MASK_MVAC_DET 0 +#define TPS80031_CONTROLLER_INT_MASK_MVBUS_DET 1 +#define TPS80031_CONTROLLER_INT_MASK_MBAT_TEMP 2 +#define TPS80031_CONTROLLER_INT_MASK_MFAULT_WDG 3 +#define TPS80031_CONTROLLER_INT_MASK_MBAT_REMOVED 4 +#define TPS80031_CONTROLLER_INT_MASK_MLINCH_GATED 5 + +#define TPS80031_CHARGE_CONTROL_SUB_INT_MASK 0x3F + +/* TPS80031_PHOENIX_DEV_ON bit field */ +#define TPS80031_DEVOFF 0x1 + +#define TPS80031_EXT_CONTROL_CFG_TRANS 0 +#define TPS80031_EXT_CONTROL_CFG_STATE 1 + +/* State register field */ +#define TPS80031_STATE_OFF 0x00 +#define TPS80031_STATE_ON 0x01 +#define TPS80031_STATE_MASK 0x03 + +/* Trans register field */ +#define TPS80031_TRANS_ACTIVE_OFF 0x00 +#define TPS80031_TRANS_ACTIVE_ON 0x01 +#define TPS80031_TRANS_ACTIVE_MASK 0x03 +#define TPS80031_TRANS_SLEEP_OFF 0x00 +#define TPS80031_TRANS_SLEEP_ON 0x04 +#define TPS80031_TRANS_SLEEP_MASK 0x0C +#define TPS80031_TRANS_OFF_OFF 0x00 +#define TPS80031_TRANS_OFF_ACTIVE 0x10 +#define TPS80031_TRANS_OFF_MASK 0x30 + +#define TPS80031_EXT_PWR_REQ (TPS80031_PWR_REQ_INPUT_PREQ1 | \ + TPS80031_PWR_REQ_INPUT_PREQ2 | \ + TPS80031_PWR_REQ_INPUT_PREQ3) + +/* TPS80031_BBSPOR_CFG bit field */ +#define TPS80031_BBSPOR_CHG_EN 0x8 +#define TPS80031_MAX_REGISTER 0xFF + +struct i2c_client; + +/* Supported chips */ +enum chips { + TPS80031 = 0x00000001, + TPS80032 = 0x00000002, +}; + +enum { + TPS80031_INT_PWRON, + TPS80031_INT_RPWRON, + TPS80031_INT_SYS_VLOW, + TPS80031_INT_RTC_ALARM, + TPS80031_INT_RTC_PERIOD, + TPS80031_INT_HOT_DIE, + TPS80031_INT_VXX_SHORT, + TPS80031_INT_SPDURATION, + TPS80031_INT_WATCHDOG, + TPS80031_INT_BAT, + TPS80031_INT_SIM, + TPS80031_INT_MMC, + TPS80031_INT_RES, + TPS80031_INT_GPADC_RT, + TPS80031_INT_GPADC_SW2_EOC, + TPS80031_INT_CC_AUTOCAL, + TPS80031_INT_ID_WKUP, + TPS80031_INT_VBUSS_WKUP, + TPS80031_INT_ID, + TPS80031_INT_VBUS, + TPS80031_INT_CHRG_CTRL, + TPS80031_INT_EXT_CHRG, + TPS80031_INT_INT_CHRG, + TPS80031_INT_RES2, + TPS80031_INT_BAT_TEMP_OVRANGE, + TPS80031_INT_BAT_REMOVED, + TPS80031_INT_VBUS_DET, + TPS80031_INT_VAC_DET, + TPS80031_INT_FAULT_WDG, + TPS80031_INT_LINCH_GATED, + + /* Last interrupt id to get the end number */ + TPS80031_INT_NR, +}; + +/* TPS80031 Slave IDs */ +#define TPS80031_NUM_SLAVES 4 +#define TPS80031_SLAVE_ID0 0 +#define TPS80031_SLAVE_ID1 1 +#define TPS80031_SLAVE_ID2 2 +#define TPS80031_SLAVE_ID3 3 + +/* TPS80031 I2C addresses */ +#define TPS80031_I2C_ID0_ADDR 0x12 +#define TPS80031_I2C_ID1_ADDR 0x48 +#define TPS80031_I2C_ID2_ADDR 0x49 +#define TPS80031_I2C_ID3_ADDR 0x4A + +enum { + TPS80031_REGULATOR_VIO, + TPS80031_REGULATOR_SMPS1, + TPS80031_REGULATOR_SMPS2, + TPS80031_REGULATOR_SMPS3, + TPS80031_REGULATOR_SMPS4, + TPS80031_REGULATOR_VANA, + TPS80031_REGULATOR_LDO1, + TPS80031_REGULATOR_LDO2, + TPS80031_REGULATOR_LDO3, + TPS80031_REGULATOR_LDO4, + TPS80031_REGULATOR_LDO5, + TPS80031_REGULATOR_LDO6, + TPS80031_REGULATOR_LDO7, + TPS80031_REGULATOR_LDOLN, + TPS80031_REGULATOR_LDOUSB, + TPS80031_REGULATOR_VBUS, + TPS80031_REGULATOR_REGEN1, + TPS80031_REGULATOR_REGEN2, + TPS80031_REGULATOR_SYSEN, + TPS80031_REGULATOR_MAX, +}; + +/* Different configurations for the rails */ +enum { + /* USBLDO input selection */ + TPS80031_USBLDO_INPUT_VSYS = 0x00000001, + TPS80031_USBLDO_INPUT_PMID = 0x00000002, + + /* LDO3 output mode */ + TPS80031_LDO3_OUTPUT_VIB = 0x00000004, + + /* VBUS configuration */ + TPS80031_VBUS_DISCHRG_EN_PDN = 0x00000004, + TPS80031_VBUS_SW_ONLY = 0x00000008, + TPS80031_VBUS_SW_N_ID = 0x00000010, +}; + +/* External controls requests */ +enum tps80031_ext_control { + TPS80031_PWR_REQ_INPUT_NONE = 0x00000000, + TPS80031_PWR_REQ_INPUT_PREQ1 = 0x00000001, + TPS80031_PWR_REQ_INPUT_PREQ2 = 0x00000002, + TPS80031_PWR_REQ_INPUT_PREQ3 = 0x00000004, + TPS80031_PWR_OFF_ON_SLEEP = 0x00000008, + TPS80031_PWR_ON_ON_SLEEP = 0x00000010, +}; + +enum tps80031_pupd_pins { + TPS80031_PREQ1 = 0, + TPS80031_PREQ2A, + TPS80031_PREQ2B, + TPS80031_PREQ2C, + TPS80031_PREQ3, + TPS80031_NRES_WARM, + TPS80031_PWM_FORCE, + TPS80031_CHRG_EXT_CHRG_STATZ, + TPS80031_SIM, + TPS80031_MMC, + TPS80031_GPADC_START, + TPS80031_DVSI2C_SCL, + TPS80031_DVSI2C_SDA, + TPS80031_CTLI2C_SCL, + TPS80031_CTLI2C_SDA, +}; + +enum tps80031_pupd_settings { + TPS80031_PUPD_NORMAL, + TPS80031_PUPD_PULLDOWN, + TPS80031_PUPD_PULLUP, +}; + +struct tps80031 { + struct device *dev; + unsigned long chip_info; + int es_version; + struct i2c_client *clients[TPS80031_NUM_SLAVES]; + struct regmap *regmap[TPS80031_NUM_SLAVES]; + struct regmap_irq_chip_data *irq_data; +}; + +struct tps80031_pupd_init_data { + int input_pin; + int setting; +}; + +/* + * struct tps80031_regulator_platform_data - tps80031 regulator platform data. + * + * @reg_init_data: The regulator init data. + * @ext_ctrl_flag: External control flag for sleep/power request control. + * @config_flags: Configuration flag to configure the rails. + * It should be ORed of config enums. + */ + +struct tps80031_regulator_platform_data { + struct regulator_init_data *reg_init_data; + unsigned int ext_ctrl_flag; + unsigned int config_flags; +}; + +struct tps80031_platform_data { + int irq_base; + bool use_power_off; + struct tps80031_pupd_init_data *pupd_init_data; + int pupd_init_data_size; + struct tps80031_regulator_platform_data + *regulator_pdata[TPS80031_REGULATOR_MAX]; +}; + +static inline int tps80031_write(struct device *dev, int sid, + int reg, uint8_t val) +{ + struct tps80031 *tps80031 = dev_get_drvdata(dev); + + return regmap_write(tps80031->regmap[sid], reg, val); +} + +static inline int tps80031_writes(struct device *dev, int sid, int reg, + int len, uint8_t *val) +{ + struct tps80031 *tps80031 = dev_get_drvdata(dev); + + return regmap_bulk_write(tps80031->regmap[sid], reg, val, len); +} + +static inline int tps80031_read(struct device *dev, int sid, + int reg, uint8_t *val) +{ + struct tps80031 *tps80031 = dev_get_drvdata(dev); + unsigned int ival; + int ret; + + ret = regmap_read(tps80031->regmap[sid], reg, &ival); + if (ret < 0) { + dev_err(dev, "failed reading from reg 0x%02x\n", reg); + return ret; + } + + *val = ival; + return ret; +} + +static inline int tps80031_reads(struct device *dev, int sid, + int reg, int len, uint8_t *val) +{ + struct tps80031 *tps80031 = dev_get_drvdata(dev); + + return regmap_bulk_read(tps80031->regmap[sid], reg, val, len); +} + +static inline int tps80031_set_bits(struct device *dev, int sid, + int reg, uint8_t bit_mask) +{ + struct tps80031 *tps80031 = dev_get_drvdata(dev); + + return regmap_update_bits(tps80031->regmap[sid], reg, + bit_mask, bit_mask); +} + +static inline int tps80031_clr_bits(struct device *dev, int sid, + int reg, uint8_t bit_mask) +{ + struct tps80031 *tps80031 = dev_get_drvdata(dev); + + return regmap_update_bits(tps80031->regmap[sid], reg, bit_mask, 0); +} + +static inline int tps80031_update(struct device *dev, int sid, + int reg, uint8_t val, uint8_t mask) +{ + struct tps80031 *tps80031 = dev_get_drvdata(dev); + + return regmap_update_bits(tps80031->regmap[sid], reg, mask, val); +} + +static inline unsigned long tps80031_get_chip_info(struct device *dev) +{ + struct tps80031 *tps80031 = dev_get_drvdata(dev); + + return tps80031->chip_info; +} + +static inline int tps80031_get_pmu_version(struct device *dev) +{ + struct tps80031 *tps80031 = dev_get_drvdata(dev); + + return tps80031->es_version; +} + +static inline int tps80031_irq_get_virq(struct device *dev, int irq) +{ + struct tps80031 *tps80031 = dev_get_drvdata(dev); + + return regmap_irq_get_virq(tps80031->irq_data, irq); +} + +extern int tps80031_ext_power_req_config(struct device *dev, + unsigned long ext_ctrl_flag, int preq_bit, + int state_reg_add, int trans_reg_add); +#endif /*__LINUX_MFD_TPS80031_H */ -- cgit v1.2.3 From 3863db3e800c64e21e4effcc3de0f72cdb9b0d77 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Tue, 20 Nov 2012 08:44:47 +0530 Subject: mfd: tps65090: Remove unused member of struct tps65090 Remove unused member from tps65090 data structure as these are not used. Signed-off-by: Laxman Dewangan Signed-off-by: Samuel Ortiz --- include/linux/mfd/tps65090.h | 11 ----------- 1 file changed, 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/tps65090.h b/include/linux/mfd/tps65090.h index 6bc31d854626..6c576224f637 100644 --- a/include/linux/mfd/tps65090.h +++ b/include/linux/mfd/tps65090.h @@ -25,26 +25,15 @@ #include struct tps65090 { - struct mutex lock; struct device *dev; - struct i2c_client *client; struct regmap *rmap; struct irq_chip irq_chip; struct mutex irq_lock; int irq_base; - unsigned int id; -}; - -struct tps65090_subdev_info { - int id; - const char *name; - void *platform_data; }; struct tps65090_platform_data { int irq_base; - int num_subdevs; - struct tps65090_subdev_info *subdevs; }; /* -- cgit v1.2.3 From b9c79323166530a14c1fa8c10337eeaa54e3f98d Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Tue, 20 Nov 2012 08:44:48 +0530 Subject: mfd: tps65090: Move register access APIs to header Since tps65090 register is accessed via regmap, moving the register access APIs to header and making it as inline. Signed-off-by: Laxman Dewangan Signed-off-by: Samuel Ortiz --- include/linux/mfd/tps65090.h | 39 +++++++++++++++++++++++++++++++++++---- 1 file changed, 35 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/tps65090.h b/include/linux/mfd/tps65090.h index 6c576224f637..1a5f916b7383 100644 --- a/include/linux/mfd/tps65090.h +++ b/include/linux/mfd/tps65090.h @@ -23,6 +23,7 @@ #define __LINUX_MFD_TPS65090_H #include +#include struct tps65090 { struct device *dev; @@ -40,9 +41,39 @@ struct tps65090_platform_data { * NOTE: the functions below are not intended for use outside * of the TPS65090 sub-device drivers */ -extern int tps65090_write(struct device *dev, int reg, uint8_t val); -extern int tps65090_read(struct device *dev, int reg, uint8_t *val); -extern int tps65090_set_bits(struct device *dev, int reg, uint8_t bit_num); -extern int tps65090_clr_bits(struct device *dev, int reg, uint8_t bit_num); +static inline int tps65090_write(struct device *dev, int reg, uint8_t val) +{ + struct tps65090 *tps = dev_get_drvdata(dev); + + return regmap_write(tps->rmap, reg, val); +} + +static inline int tps65090_read(struct device *dev, int reg, uint8_t *val) +{ + struct tps65090 *tps = dev_get_drvdata(dev); + unsigned int temp_val; + int ret; + + ret = regmap_read(tps->rmap, reg, &temp_val); + if (!ret) + *val = temp_val; + return ret; +} + +static inline int tps65090_set_bits(struct device *dev, int reg, + uint8_t bit_num) +{ + struct tps65090 *tps = dev_get_drvdata(dev); + + return regmap_update_bits(tps->rmap, reg, BIT(bit_num), ~0u); +} + +static inline int tps65090_clr_bits(struct device *dev, int reg, + uint8_t bit_num) +{ + struct tps65090 *tps = dev_get_drvdata(dev); + + return regmap_update_bits(tps->rmap, reg, BIT(bit_num), 0u); +} #endif /*__LINUX_MFD_TPS65090_H */ -- cgit v1.2.3 From 759f2598ef3876637e40d99a4ceb7a3d83a4d8d3 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Tue, 20 Nov 2012 08:44:49 +0530 Subject: mfd: tps65090: Use regmap irq framework for interrupt support Use the regmap irq framework for implementing TPS65090 interrupt support in place of implementing it locally. Signed-off-by: Laxman Dewangan Signed-off-by: Samuel Ortiz --- include/linux/mfd/tps65090.h | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/tps65090.h b/include/linux/mfd/tps65090.h index 1a5f916b7383..4bbbb1350b91 100644 --- a/include/linux/mfd/tps65090.h +++ b/include/linux/mfd/tps65090.h @@ -25,12 +25,29 @@ #include #include +/* TPS65090 IRQs */ +enum { + TPS65090_IRQ_VAC_STATUS_CHANGE, + TPS65090_IRQ_VSYS_STATUS_CHANGE, + TPS65090_IRQ_BAT_STATUS_CHANGE, + TPS65090_IRQ_CHARGING_STATUS_CHANGE, + TPS65090_IRQ_CHARGING_COMPLETE, + TPS65090_IRQ_OVERLOAD_DCDC1, + TPS65090_IRQ_OVERLOAD_DCDC2, + TPS65090_IRQ_OVERLOAD_DCDC3, + TPS65090_IRQ_OVERLOAD_FET1, + TPS65090_IRQ_OVERLOAD_FET2, + TPS65090_IRQ_OVERLOAD_FET3, + TPS65090_IRQ_OVERLOAD_FET4, + TPS65090_IRQ_OVERLOAD_FET5, + TPS65090_IRQ_OVERLOAD_FET6, + TPS65090_IRQ_OVERLOAD_FET7, +}; + struct tps65090 { struct device *dev; struct regmap *rmap; - struct irq_chip irq_chip; - struct mutex irq_lock; - int irq_base; + struct regmap_irq_chip_data *irq_data; }; struct tps65090_platform_data { -- cgit v1.2.3 From c7b76dce8ac95fd464bfae741b830d407884c274 Mon Sep 17 00:00:00 2001 From: Aaro Koskinen Date: Sun, 18 Nov 2012 18:36:20 +0200 Subject: mfd: Introduce retu-mfd driver Retu is a multi-function device found on Nokia Internet Tablets implementing at least watchdog, RTC, headset detection and power button functionality. This patch implements minimum functionality providing register access, IRQ handling and power off functions. Acked-by: Felipe Balbi Acked-by: Tony Lindgren Signed-off-by: Aaro Koskinen Signed-off-by: Samuel Ortiz --- include/linux/mfd/retu.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 include/linux/mfd/retu.h (limited to 'include/linux') diff --git a/include/linux/mfd/retu.h b/include/linux/mfd/retu.h new file mode 100644 index 000000000000..1e2715d5b836 --- /dev/null +++ b/include/linux/mfd/retu.h @@ -0,0 +1,22 @@ +/* + * Retu MFD driver interface + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file "COPYING" in the main directory of this + * archive for more details. + */ + +#ifndef __LINUX_MFD_RETU_H +#define __LINUX_MFD_RETU_H + +struct retu_dev; + +int retu_read(struct retu_dev *, u8); +int retu_write(struct retu_dev *, u8, u16); + +/* Registers */ +#define RETU_REG_WATCHDOG 0x17 /* Watchdog */ +#define RETU_REG_CC1 0x0d /* Common control register 1 */ +#define RETU_REG_STATUS 0x16 /* Status register */ + +#endif /* __LINUX_MFD_RETU_H */ -- cgit v1.2.3 From 0e8f1398a388bbaa5ca965711b9ed5ac4794332d Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Tue, 13 Nov 2012 09:28:47 +0100 Subject: mfd: twl: Remove unused TWL_MODULE definitions AUDIO and MADC only available on twl4030 series and the TWL_MODULE_* mapping is not needed. Acked-by: Tero Kristo Signed-off-by: Peter Ujfalusi Signed-off-by: Samuel Ortiz --- include/linux/i2c/twl.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h index 9a5e28462324..7278c72479d1 100644 --- a/include/linux/i2c/twl.h +++ b/include/linux/i2c/twl.h @@ -73,9 +73,7 @@ #define TWL4030_MODULE_SECURED_REG 0x17 #define TWL_MODULE_USB TWL4030_MODULE_USB -#define TWL_MODULE_AUDIO_VOICE TWL4030_MODULE_AUDIO_VOICE #define TWL_MODULE_PIH TWL4030_MODULE_PIH -#define TWL_MODULE_MADC TWL4030_MODULE_MADC #define TWL_MODULE_MAIN_CHARGE TWL4030_MODULE_MAIN_CHARGE #define TWL_MODULE_PM_MASTER TWL4030_MODULE_PM_MASTER #define TWL_MODULE_PM_RECEIVER TWL4030_MODULE_PM_RECEIVER -- cgit v1.2.3 From da059ecfc9f9d98556607c6d6db065aa3b7f162d Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Tue, 13 Nov 2012 09:28:48 +0100 Subject: mfd: twl: Convert module id definitions to enums Use enum list for the module definitions (TWL4030_MODULE_*) which will ease up future work with the IDs. At the same time group the IDs in block of five so it is easier to find the ID we are looking for (to count the number they stand for). At the same time define TWL_MODULE_LED so client drivers can switch to use it as soon as it is possible. Acked-by: Tero Kristo Signed-off-by: Peter Ujfalusi Signed-off-by: Samuel Ortiz --- include/linux/i2c/twl.h | 65 +++++++++++++++++++++++++------------------------ 1 file changed, 33 insertions(+), 32 deletions(-) (limited to 'include/linux') diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h index 7278c72479d1..b1c44cccef31 100644 --- a/include/linux/i2c/twl.h +++ b/include/linux/i2c/twl.h @@ -39,39 +39,39 @@ * address each module uses within a given i2c slave. */ -/* Slave 0 (i2c address 0x48) */ -#define TWL4030_MODULE_USB 0x00 - -/* Slave 1 (i2c address 0x49) */ -#define TWL4030_MODULE_AUDIO_VOICE 0x01 -#define TWL4030_MODULE_GPIO 0x02 -#define TWL4030_MODULE_INTBR 0x03 -#define TWL4030_MODULE_PIH 0x04 -#define TWL4030_MODULE_TEST 0x05 - -/* Slave 2 (i2c address 0x4a) */ -#define TWL4030_MODULE_KEYPAD 0x06 -#define TWL4030_MODULE_MADC 0x07 -#define TWL4030_MODULE_INTERRUPTS 0x08 -#define TWL4030_MODULE_LED 0x09 -#define TWL4030_MODULE_MAIN_CHARGE 0x0A -#define TWL4030_MODULE_PRECHARGE 0x0B -#define TWL4030_MODULE_PWM0 0x0C -#define TWL4030_MODULE_PWM1 0x0D -#define TWL4030_MODULE_PWMA 0x0E -#define TWL4030_MODULE_PWMB 0x0F - -#define TWL5031_MODULE_ACCESSORY 0x10 -#define TWL5031_MODULE_INTERRUPTS 0x11 - -/* Slave 3 (i2c address 0x4b) */ -#define TWL4030_MODULE_BACKUP 0x12 -#define TWL4030_MODULE_INT 0x13 -#define TWL4030_MODULE_PM_MASTER 0x14 -#define TWL4030_MODULE_PM_RECEIVER 0x15 -#define TWL4030_MODULE_RTC 0x16 -#define TWL4030_MODULE_SECURED_REG 0x17 +enum twl4030_module_ids { + TWL4030_MODULE_USB = 0, /* Slave 0 (i2c address 0x48) */ + TWL4030_MODULE_AUDIO_VOICE, /* Slave 1 (i2c address 0x49) */ + TWL4030_MODULE_GPIO, + TWL4030_MODULE_INTBR, + TWL4030_MODULE_PIH, + + TWL4030_MODULE_TEST, + TWL4030_MODULE_KEYPAD, /* Slave 2 (i2c address 0x4a) */ + TWL4030_MODULE_MADC, + TWL4030_MODULE_INTERRUPTS, + TWL4030_MODULE_LED, + + TWL4030_MODULE_MAIN_CHARGE, + TWL4030_MODULE_PRECHARGE, + TWL4030_MODULE_PWM0, + TWL4030_MODULE_PWM1, + TWL4030_MODULE_PWMA, + + TWL4030_MODULE_PWMB, + TWL5031_MODULE_ACCESSORY, + TWL5031_MODULE_INTERRUPTS, + TWL4030_MODULE_BACKUP, /* Slave 3 (i2c address 0x4b) */ + TWL4030_MODULE_INT, + + TWL4030_MODULE_PM_MASTER, + TWL4030_MODULE_PM_RECEIVER, + TWL4030_MODULE_RTC, + TWL4030_MODULE_SECURED_REG, + TWL4030_MODULE_LAST, +}; +/* Similar functionalities implemented in TWL4030/6030 */ #define TWL_MODULE_USB TWL4030_MODULE_USB #define TWL_MODULE_PIH TWL4030_MODULE_PIH #define TWL_MODULE_MAIN_CHARGE TWL4030_MODULE_MAIN_CHARGE @@ -79,6 +79,7 @@ #define TWL_MODULE_PM_RECEIVER TWL4030_MODULE_PM_RECEIVER #define TWL_MODULE_RTC TWL4030_MODULE_RTC #define TWL_MODULE_PWM TWL4030_MODULE_PWM0 +#define TWL_MODULE_LED TWL4030_MODULE_LED #define TWL6030_MODULE_ID0 0x0D #define TWL6030_MODULE_ID1 0x0E -- cgit v1.2.3 From 04575d5a3dc15d762c7428d2745d30b2d448e443 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Tue, 13 Nov 2012 09:28:49 +0100 Subject: mfd: twl: Use decimal numbers for TWL6030_MODULE_IDs It is easier fro humans to understand decimal numbers than hexadecimals when they are used as indexes. Acked-by: Tero Kristo Signed-off-by: Peter Ujfalusi Signed-off-by: Samuel Ortiz --- include/linux/i2c/twl.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h index b1c44cccef31..1ff54b114efc 100644 --- a/include/linux/i2c/twl.h +++ b/include/linux/i2c/twl.h @@ -81,9 +81,9 @@ enum twl4030_module_ids { #define TWL_MODULE_PWM TWL4030_MODULE_PWM0 #define TWL_MODULE_LED TWL4030_MODULE_LED -#define TWL6030_MODULE_ID0 0x0D -#define TWL6030_MODULE_ID1 0x0E -#define TWL6030_MODULE_ID2 0x0F +#define TWL6030_MODULE_ID0 13 +#define TWL6030_MODULE_ID1 14 +#define TWL6030_MODULE_ID2 15 #define GPIO_INTR_OFFSET 0 #define KEYPAD_INTR_OFFSET 1 -- cgit v1.2.3 From 70ee65771424829fd092a1df9afcc7e24c94004b Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 20 Nov 2012 22:39:49 +0100 Subject: clk: move IM-PD1 clocks to drivers/clk The ARM IM-PD1 add-on module has a few clock of its own, let's move also these down to the drivers/clk/versatile driver dir and get rid of any remaining oldschool Integrator clocks. Signed-off-by: Linus Walleij Signed-off-by: Mike Turquette --- include/linux/platform_data/clk-integrator.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/clk-integrator.h b/include/linux/platform_data/clk-integrator.h index 83fe9c283bb8..280edac9d0a5 100644 --- a/include/linux/platform_data/clk-integrator.h +++ b/include/linux/platform_data/clk-integrator.h @@ -1 +1,3 @@ void integrator_clk_init(bool is_cp); +void integrator_impd1_clk_init(void __iomem *base, unsigned int id); +void integrator_impd1_clk_exit(unsigned int id); -- cgit v1.2.3 From ef85fb28305fad7617f307383ebba554a3a891a2 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Tue, 20 Nov 2012 22:24:27 +0000 Subject: bcma: add locking around GPIO register accesses The GPIOs are access through some registers in the chip common core. We need locking around these GPIO accesses, all GPIOs are accessed through the same registers and parallel writes will cause problems. Signed-off-by: Hauke Mehrtens Patchwork: http://patchwork.linux-mips.org/patch/4585 Acked-by: Florian Fainelli --- include/linux/bcma/bcma_driver_chipcommon.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h index 1cf1749440ac..a085d986c804 100644 --- a/include/linux/bcma/bcma_driver_chipcommon.h +++ b/include/linux/bcma/bcma_driver_chipcommon.h @@ -567,6 +567,9 @@ struct bcma_drv_cc { int nr_serial_ports; struct bcma_serial_port serial_ports[4]; #endif /* CONFIG_BCMA_DRIVER_MIPS */ + + /* Lock for GPIO register access. */ + spinlock_t gpio_lock; }; /* Register access */ -- cgit v1.2.3 From ea3488f4696fe22811eb19bee7088b732d3f8fe0 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Tue, 20 Nov 2012 22:24:28 +0000 Subject: bcma: add bcma_chipco_gpio_pull{up,down} Add functions to access the GPIO registers for pullup and pulldown. These are needed for handling gpio registration. Signed-off-by: Hauke Mehrtens Patchwork: http://patchwork.linux-mips.org/patch/4586 Acked-by: Florian Fainelli --- include/linux/bcma/bcma_driver_chipcommon.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h index a085d986c804..256702663b68 100644 --- a/include/linux/bcma/bcma_driver_chipcommon.h +++ b/include/linux/bcma/bcma_driver_chipcommon.h @@ -606,6 +606,8 @@ u32 bcma_chipco_gpio_outen(struct bcma_drv_cc *cc, u32 mask, u32 value); u32 bcma_chipco_gpio_control(struct bcma_drv_cc *cc, u32 mask, u32 value); u32 bcma_chipco_gpio_intmask(struct bcma_drv_cc *cc, u32 mask, u32 value); u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value); +u32 bcma_chipco_gpio_pullup(struct bcma_drv_cc *cc, u32 mask, u32 value); +u32 bcma_chipco_gpio_pulldown(struct bcma_drv_cc *cc, u32 mask, u32 value); /* PMU support */ extern void bcma_pmu_init(struct bcma_drv_cc *cc); -- cgit v1.2.3 From cf0936b06d8e98a157630e99f647e2ff6d29d7ad Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Tue, 20 Nov 2012 22:24:30 +0000 Subject: bcma: add GPIO driver Register a GPIO driver to access the GPIOs provided by the chip. The GPIOs of the SoC should always start at 0 and the other GPIOs could start at a random position. There is just one SoC in a system and when they start at 0 the number is predictable. Signed-off-by: Hauke Mehrtens Patchwork: http://patchwork.linux-mips.org/patch/4587 Acked-by: Florian Fainelli --- include/linux/bcma/bcma_driver_chipcommon.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h index 256702663b68..7d662a988d24 100644 --- a/include/linux/bcma/bcma_driver_chipcommon.h +++ b/include/linux/bcma/bcma_driver_chipcommon.h @@ -1,6 +1,8 @@ #ifndef LINUX_BCMA_DRIVER_CC_H_ #define LINUX_BCMA_DRIVER_CC_H_ +#include + /** ChipCommon core registers. **/ #define BCMA_CC_ID 0x0000 #define BCMA_CC_ID_ID 0x0000FFFF @@ -570,6 +572,9 @@ struct bcma_drv_cc { /* Lock for GPIO register access. */ spinlock_t gpio_lock; +#ifdef CONFIG_BCMA_DRIVER_GPIO + struct gpio_chip gpio; +#endif }; /* Register access */ -- cgit v1.2.3 From da22f22e91f0d14d996c7258101575a5a06ddf85 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Tue, 20 Nov 2012 22:24:31 +0000 Subject: ssb: add ssb_chipco_gpio_pull{up,down} Add functions to access the GPIO registers for pullup and pulldown. These are needed for handling gpio registration. Signed-off-by: Hauke Mehrtens Patchwork: http://patchwork.linux-mips.org/patch/4589 Acked-by: Florian Fainelli --- include/linux/ssb/ssb_driver_chipcommon.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb_driver_chipcommon.h b/include/linux/ssb/ssb_driver_chipcommon.h index c2b02a5c86ae..c8d07c95d76e 100644 --- a/include/linux/ssb/ssb_driver_chipcommon.h +++ b/include/linux/ssb/ssb_driver_chipcommon.h @@ -644,6 +644,8 @@ u32 ssb_chipco_gpio_outen(struct ssb_chipcommon *cc, u32 mask, u32 value); u32 ssb_chipco_gpio_control(struct ssb_chipcommon *cc, u32 mask, u32 value); u32 ssb_chipco_gpio_intmask(struct ssb_chipcommon *cc, u32 mask, u32 value); u32 ssb_chipco_gpio_polarity(struct ssb_chipcommon *cc, u32 mask, u32 value); +u32 ssb_chipco_gpio_pullup(struct ssb_chipcommon *cc, u32 mask, u32 value); +u32 ssb_chipco_gpio_pulldown(struct ssb_chipcommon *cc, u32 mask, u32 value); #ifdef CONFIG_SSB_SERIAL extern int ssb_chipco_serial_init(struct ssb_chipcommon *cc, -- cgit v1.2.3 From 394bc7e38be79987ed15de203920c3cddb724cc1 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Tue, 20 Nov 2012 22:24:32 +0000 Subject: ssb: add locking around gpio register accesses The GPIOs are access through some registers in the chip common core or over extif. We need locking around these GPIO accesses, all GPIOs are accessed through the same registers and parallel writes will cause problems. Signed-off-by: Hauke Mehrtens Patchwork: http://patchwork.linux-mips.org/patch/4590 Acked-by: Florian Fainelli --- include/linux/ssb/ssb_driver_chipcommon.h | 1 + include/linux/ssb/ssb_driver_extif.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb_driver_chipcommon.h b/include/linux/ssb/ssb_driver_chipcommon.h index c8d07c95d76e..30b694345d47 100644 --- a/include/linux/ssb/ssb_driver_chipcommon.h +++ b/include/linux/ssb/ssb_driver_chipcommon.h @@ -590,6 +590,7 @@ struct ssb_chipcommon { u32 status; /* Fast Powerup Delay constant */ u16 fast_pwrup_delay; + spinlock_t gpio_lock; struct ssb_chipcommon_pmu pmu; }; diff --git a/include/linux/ssb/ssb_driver_extif.h b/include/linux/ssb/ssb_driver_extif.h index 91161f0aa22b..bd2306854a91 100644 --- a/include/linux/ssb/ssb_driver_extif.h +++ b/include/linux/ssb/ssb_driver_extif.h @@ -158,6 +158,7 @@ struct ssb_extif { struct ssb_device *dev; + spinlock_t gpio_lock; }; static inline bool ssb_extif_available(struct ssb_extif *extif) -- cgit v1.2.3 From ec43b08b5733494ad88aa618ecdf534320dd8207 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Tue, 20 Nov 2012 22:24:33 +0000 Subject: ssb: add GPIO driver Register a GPIO driver to access the GPIOs provided by the chip. The GPIOs of the SoC should always start at 0 and the other GPIOs could start at a random position. There is just one SoC in a system and when they start at 0 the number is predictable. Signed-off-by: Hauke Mehrtens Patchwork: http://patchwork.linux-mips.org/patch/4591 Acked-by: Florian Fainelli --- include/linux/ssb/ssb.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb.h b/include/linux/ssb/ssb.h index bb674c02f306..3862a5bbd73b 100644 --- a/include/linux/ssb/ssb.h +++ b/include/linux/ssb/ssb.h @@ -6,6 +6,7 @@ #include #include #include +#include #include #include @@ -433,6 +434,9 @@ struct ssb_bus { /* Lock for GPIO register access. */ spinlock_t gpio_lock; #endif /* EMBEDDED */ +#ifdef CONFIG_SSB_DRIVER_GPIO + struct gpio_chip gpio; +#endif /* DRIVER_GPIO */ /* Internal-only stuff follows. Do not touch. */ struct list_head list; -- cgit v1.2.3 From fbfddae696572e57a441252abbd65f7220e06030 Mon Sep 17 00:00:00 2001 From: Toshi Kani Date: Wed, 21 Nov 2012 01:36:28 +0000 Subject: ACPI: Add acpi_handle_() interfaces This patch introduces acpi_handle_(), where is a kernel message level such as err/warn/info, to support improved logging messages for ACPI, esp. hot-plug operations. acpi_handle_() appends "ACPI" prefix and ACPI object path to the messages. This improves diagnosis of hotplug operations since an error message in a log file identifies an object that caused an issue. This interface acquires the global namespace mutex to obtain an object path. In interrupt context, it shows the object path as . acpi_handle_() takes acpi_handle as an argument, which is passed to ACPI hotplug notify handlers from the ACPICA. Therefore, it is always available unlike other kernel objects, such as device. For example: acpi_handle_err(handle, "Device don't exist, dropping EJECT\n"); logs an error message like this at KERN_ERR. ACPI: \_SB_.SCK4.CPU4: Device don't exist, dropping EJECT ACPI hot-plug drivers can use acpi_handle_() when they need to identify a target ACPI object path in their messages, such as error cases. The usage model is similar to dev_(). acpi_handle_() can be used when a device is not created or is invalid during hot-plug operations. ACPI object path is also consistent on the platform, unlike device name that gets incremented over hotplug operations. ACPI drivers should use dev_() when a device object is valid. Device name provides more user friendly information, and avoids acquiring the global ACPI namespace mutex. ACPI drivers also continue to use pr_() when they do not need to specify device information, such as boot-up messages. Note: ACPI_[WARNING|INFO|ERROR]() are intended for the ACPICA and are not associated with the kernel message level. Signed-off-by: Toshi Kani Tested-by: Vijay Mohan Pandarathil Signed-off-by: Rafael J. Wysocki --- include/linux/acpi.h | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 87edfcc0ab62..9201ac1f0511 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -434,4 +434,47 @@ acpi_status acpi_os_prepare_sleep(u8 sleep_state, #define acpi_os_set_prepare_sleep(func, pm1a_ctrl, pm1b_ctrl) do { } while (0) #endif +#ifdef CONFIG_ACPI +__printf(3, 4) +void acpi_handle_printk(const char *level, acpi_handle handle, + const char *fmt, ...); +#else /* !CONFIG_ACPI */ +static inline __printf(3, 4) void +acpi_handle_printk(const char *level, void *handle, const char *fmt, ...) {} +#endif /* !CONFIG_ACPI */ + +/* + * acpi_handle_: Print message with ACPI prefix and object path + * + * These interfaces acquire the global namespace mutex to obtain an object + * path. In interrupt context, it shows the object path as . + */ +#define acpi_handle_emerg(handle, fmt, ...) \ + acpi_handle_printk(KERN_EMERG, handle, fmt, ##__VA_ARGS__) +#define acpi_handle_alert(handle, fmt, ...) \ + acpi_handle_printk(KERN_ALERT, handle, fmt, ##__VA_ARGS__) +#define acpi_handle_crit(handle, fmt, ...) \ + acpi_handle_printk(KERN_CRIT, handle, fmt, ##__VA_ARGS__) +#define acpi_handle_err(handle, fmt, ...) \ + acpi_handle_printk(KERN_ERR, handle, fmt, ##__VA_ARGS__) +#define acpi_handle_warn(handle, fmt, ...) \ + acpi_handle_printk(KERN_WARNING, handle, fmt, ##__VA_ARGS__) +#define acpi_handle_notice(handle, fmt, ...) \ + acpi_handle_printk(KERN_NOTICE, handle, fmt, ##__VA_ARGS__) +#define acpi_handle_info(handle, fmt, ...) \ + acpi_handle_printk(KERN_INFO, handle, fmt, ##__VA_ARGS__) + +/* REVISIT: Support CONFIG_DYNAMIC_DEBUG when necessary */ +#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) +#define acpi_handle_debug(handle, fmt, ...) \ + acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__) +#else +#define acpi_handle_debug(handle, fmt, ...) \ +({ \ + if (0) \ + acpi_handle_printk(KERN_DEBUG, handle, fmt, ##__VA_ARGS__); \ + 0; \ +}) +#endif + #endif /*_LINUX_ACPI_H*/ -- cgit v1.2.3 From d79251f0fc2fdb7587c99617aae0bf52ff6c5510 Mon Sep 17 00:00:00 2001 From: Bill Pemberton Date: Mon, 19 Nov 2012 13:25:25 -0500 Subject: ipack: remove use of __devinitconst CONFIG_HOTPLUG is going away as an option so __devinitconst is no longer needed. Signed-off-by: Bill Pemberton Signed-off-by: Greg Kroah-Hartman --- include/linux/ipack.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ipack.h b/include/linux/ipack.h index a360c73129a6..fea12cbb2aeb 100644 --- a/include/linux/ipack.h +++ b/include/linux/ipack.h @@ -229,8 +229,7 @@ void ipack_device_unregister(struct ipack_device *dev); * in a generic manner. */ #define DEFINE_IPACK_DEVICE_TABLE(_table) \ - const struct ipack_device_id _table[] __devinitconst - + const struct ipack_device_id _table[] /** * IPACK_DEVICE - macro used to describe a specific IndustryPack device * @_format: the format version (currently either 1 or 2, 8 bit value) -- cgit v1.2.3 From 743179849015dc71bb2ea63d8cd4bfa7fdfb4bc6 Mon Sep 17 00:00:00 2001 From: Jean-Christophe PLAGNIOL-VILLARD Date: Thu, 15 Nov 2012 20:19:57 +0100 Subject: of_spi: add generic binding support to specify cs gpio This will allow to use gpio for chip select with no modification in the driver binding When use the cs-gpios, the gpio number will be passed via the cs_gpio field and the number of chip select will automatically increased with max(hw cs, gpio cs). So if for example the controller has 2 CS lines, and the cs-gpios property looks like this: cs-gpios = <&gpio1 0 0> <0> <&gpio1 1 0> <&gpio1 2 0>; Then it should be configured so that num_chipselect = 4 with the following mapping: cs0 : &gpio1 0 0 cs1 : native cs2 : &gpio1 1 0 cs3 : &gpio1 2 0 Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD Cc: devicetree-discuss@lists.ozlabs.org Cc: spi-devel-general@lists.sourceforge.net Signed-off-by: Richard Genoud [grant.likely: fixed up type of cs count so min() can do type checking] Signed-off-by: Grant Likely --- include/linux/spi/spi.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index fa702aeb5038..f62918946d86 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -90,6 +90,7 @@ struct spi_device { void *controller_state; void *controller_data; char modalias[SPI_NAME_SIZE]; + int cs_gpio; /* chip select gpio */ /* * likely need more hooks for more protocol options affecting how @@ -362,6 +363,8 @@ struct spi_master { int (*transfer_one_message)(struct spi_master *master, struct spi_message *mesg); int (*unprepare_transfer_hardware)(struct spi_master *master); + /* gpio chip select */ + int *cs_gpios; }; static inline void *spi_master_get_devdata(struct spi_master *master) -- cgit v1.2.3 From dc96efb72054985c0912f831da009a2da4e9f6dd Mon Sep 17 00:00:00 2001 From: Matt Schulte Date: Mon, 19 Nov 2012 09:12:04 -0600 Subject: Serial: Add support for new devices: Exar's XR17V35x family of multi-port PCIe UARTs Add support for new devices: Exar's XR17V35x family of multi-port PCIe UARTs. Signed-off-by: Matt Schulte Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/pci_ids.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 9d36b829533a..0199a7a76fcb 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -1985,6 +1985,9 @@ #define PCI_DEVICE_ID_EXAR_XR17C152 0x0152 #define PCI_DEVICE_ID_EXAR_XR17C154 0x0154 #define PCI_DEVICE_ID_EXAR_XR17C158 0x0158 +#define PCI_DEVICE_ID_EXAR_XR17V352 0x0352 +#define PCI_DEVICE_ID_EXAR_XR17V354 0x0354 +#define PCI_DEVICE_ID_EXAR_XR17V358 0x0358 #define PCI_VENDOR_ID_MICROGATE 0x13c0 #define PCI_DEVICE_ID_MICROGATE_USC 0x0010 -- cgit v1.2.3 From 14faa8cce88e18ed4daf5c3643f0faa4198863f9 Mon Sep 17 00:00:00 2001 From: Matt Schulte Date: Wed, 21 Nov 2012 10:35:15 -0600 Subject: tty/8250 Add support for Commtech's Fastcom Async-335 and Fastcom Async-PCIe cards Add support for Commtech's Fastcom Async-335 and Fastcom Async-PCIe cards Signed-off-by: Matt Schulte Signed-off-by: Greg Kroah-Hartman --- include/linux/pci_ids.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 0199a7a76fcb..0f8447376ddb 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2326,6 +2326,8 @@ #define PCI_VENDOR_ID_TOPSPIN 0x1867 +#define PCI_VENDOR_ID_COMMTECH 0x18f7 + #define PCI_VENDOR_ID_SILAN 0x1904 #define PCI_VENDOR_ID_RENESAS 0x1912 -- cgit v1.2.3 From df072eb97dcfb819390227649f6b7c07a90aa2df Mon Sep 17 00:00:00 2001 From: MyungJoo Ham Date: Tue, 20 Nov 2012 19:22:33 +0900 Subject: extcon: kernel_doc style fix Corrected kernel_doc entries. Signed-off-by: MyungJoo Ham --- include/linux/extcon.h | 48 ++++++++++++++++++++++++------------------------ 1 file changed, 24 insertions(+), 24 deletions(-) (limited to 'include/linux') diff --git a/include/linux/extcon.h b/include/linux/extcon.h index 54c00ce9ce7a..fcb51c88319f 100644 --- a/include/linux/extcon.h +++ b/include/linux/extcon.h @@ -76,12 +76,12 @@ struct extcon_cable; /** * struct extcon_dev - An extcon device represents one external connector. - * @name The name of this extcon device. Parent device name is used + * @name: The name of this extcon device. Parent device name is used * if NULL. - * @supported_cable Array of supported cable names ending with NULL. + * @supported_cable: Array of supported cable names ending with NULL. * If supported_cable is NULL, cable name related APIs * are disabled. - * @mutually_exclusive Array of mutually exclusive set of cables that cannot + * @mutually_exclusive: Array of mutually exclusive set of cables that cannot * be attached simultaneously. The array should be * ending with NULL or be NULL (no mutually exclusive * cables). For example, if it is { 0x7, 0x30, 0}, then, @@ -89,21 +89,21 @@ struct extcon_cable; * be attached simulataneously. {0x7, 0} is equivalent to * {0x3, 0x6, 0x5, 0}. If it is {0xFFFFFFFF, 0}, there * can be no simultaneous connections. - * @print_name An optional callback to override the method to print the + * @print_name: An optional callback to override the method to print the * name of the extcon device. - * @print_state An optional callback to override the method to print the + * @print_state: An optional callback to override the method to print the * status of the extcon device. - * @dev Device of this extcon. Do not provide at register-time. - * @state Attach/detach state of this extcon. Do not provide at + * @dev: Device of this extcon. Do not provide at register-time. + * @state: Attach/detach state of this extcon. Do not provide at * register-time - * @nh Notifier for the state change events from this extcon - * @entry To support list of extcon devices so that users can search + * @nh: Notifier for the state change events from this extcon + * @entry: To support list of extcon devices so that users can search * for extcon devices based on the extcon name. - * @lock - * @max_supported Internal value to store the number of cables. - * @extcon_dev_type Device_type struct to provide attribute_groups + * @lock: + * @max_supported: Internal value to store the number of cables. + * @extcon_dev_type: Device_type struct to provide attribute_groups * customized for each extcon device. - * @cables Sysfs subdirectories. Each represents one cable. + * @cables: Sysfs subdirectories. Each represents one cable. * * In most cases, users only need to provide "User initializing data" of * this struct when registering an extcon. In some exceptional cases, @@ -139,12 +139,12 @@ struct extcon_dev { /** * struct extcon_cable - An internal data for each cable of extcon device. - * @edev The extcon device - * @cable_index Index of this cable in the edev - * @attr_g Attribute group for the cable - * @attr_name "name" sysfs entry - * @attr_state "state" sysfs entry - * @attrs Array pointing to attr_name and attr_state for attr_g + * @edev: The extcon device + * @cable_index: Index of this cable in the edev + * @attr_g: Attribute group for the cable + * @attr_name: "name" sysfs entry + * @attr_state: "state" sysfs entry + * @attrs: Array pointing to attr_name and attr_state for attr_g */ struct extcon_cable { struct extcon_dev *edev; @@ -160,11 +160,11 @@ struct extcon_cable { /** * struct extcon_specific_cable_nb - An internal data for * extcon_register_interest(). - * @internal_nb a notifier block bridging extcon notifier and cable notifier. - * @user_nb user provided notifier block for events from a specific cable. - * @cable_index the target cable. - * @edev the target extcon device. - * @previous_value the saved previous event value. + * @internal_nb: a notifier block bridging extcon notifier and cable notifier. + * @user_nb: user provided notifier block for events from a specific cable. + * @cable_index: the target cable. + * @edev: the target extcon device. + * @previous_value: the saved previous event value. */ struct extcon_specific_cable_nb { struct notifier_block internal_nb; -- cgit v1.2.3 From 8d4b9e3182634d8b5afb5a144a8c6c24b187bcc1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Mon, 12 Nov 2012 13:03:20 +0100 Subject: bcma: export PLL reading function MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This is required by NAND flash driver for initializing wait counters. Signed-off-by: Rafał Miłecki Signed-off-by: Artem Bityutskiy --- include/linux/bcma/bcma.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma.h b/include/linux/bcma/bcma.h index 4180eb78d575..4fb6bd7941d7 100644 --- a/include/linux/bcma/bcma.h +++ b/include/linux/bcma/bcma.h @@ -345,6 +345,7 @@ extern void bcma_core_set_clockmode(struct bcma_device *core, enum bcma_clkmode clkmode); extern void bcma_core_pll_ctl(struct bcma_device *core, u32 req, u32 status, bool on); +extern u32 bcma_chipco_pll_read(struct bcma_drv_cc *cc, u32 offset); #define BCMA_DMA_TRANSLATION_MASK 0xC0000000 #define BCMA_DMA_TRANSLATION_NONE 0x00000000 #define BCMA_DMA_TRANSLATION_DMA32_CMT 0x40000000 /* Client Mode Translation for 32-bit DMA */ -- cgit v1.2.3 From 3778ff5c709899a29cefe4b3077a926d0e1e9785 Mon Sep 17 00:00:00 2001 From: Eduardo Valentin Date: Mon, 12 Nov 2012 15:58:50 +0000 Subject: thermal: cpu cooling: use const parameter while registering There are predefined cpu_masks that are const data structures. This patch changes the cpu cooling register function so that those const cpu_masks can be used, without compilation warnings. include/linux/cpumask.h * The following particular system cpumasks and operations manage * possible, present, active and online cpus. * * cpu_possible_mask- has bit 'cpu' set iff cpu is populatable * cpu_present_mask - has bit 'cpu' set iff cpu is populated * cpu_online_mask - has bit 'cpu' set iff cpu available to scheduler * cpu_active_mask - has bit 'cpu' set iff cpu available to migration * Signed-off-by: Eduardo Valentin Signed-off-by: Zhang Rui --- include/linux/cpu_cooling.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cpu_cooling.h b/include/linux/cpu_cooling.h index 851530128e65..b30cc79c7a82 100644 --- a/include/linux/cpu_cooling.h +++ b/include/linux/cpu_cooling.h @@ -35,7 +35,7 @@ * @clip_cpus: cpumask of cpus where the frequency constraints will happen */ struct thermal_cooling_device *cpufreq_cooling_register( - struct cpumask *clip_cpus); + const struct cpumask *clip_cpus); /** * cpufreq_cooling_unregister - function to remove cpufreq cooling device. @@ -44,7 +44,7 @@ struct thermal_cooling_device *cpufreq_cooling_register( void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev); #else /* !CONFIG_CPU_THERMAL */ static inline struct thermal_cooling_device *cpufreq_cooling_register( - struct cpumask *clip_cpus) + const struct cpumask *clip_cpus) { return NULL; } -- cgit v1.2.3 From 4ba115b1e1ab6b717e08e0f4e766a1d16853d217 Mon Sep 17 00:00:00 2001 From: Eduardo Valentin Date: Wed, 14 Nov 2012 15:23:30 +0000 Subject: thermal: cpu cooling: allow module builds As thermal drivers can be built as modules and also the thermal framework itself, building cpu cooling only as built-in can cause linking errors. For instance: * Generic Thermal sysfs driver * Generic Thermal sysfs driver (THERMAL) [M/n/y/?] m generic cpu cooling support (CPU_THERMAL) [N/y/?] (NEW) y with the following drive: CONFIG_OMAP_BANDGAP=m generates: ERROR: "cpufreq_cooling_unregister" [drivers/staging/omap-thermal/omap-thermal.ko] undefined! ERROR: "cpufreq_cooling_register" [drivers/staging/omap-thermal/omap-thermal.ko] undefined! This patch changes cpu cooling driver to allow it to be built as module. Reported-by: Enric Balletbo i Serra Signed-off-by: Eduardo Valentin Reviewed-by: Durgadoss R Signed-off-by: Zhang Rui --- include/linux/cpu_cooling.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cpu_cooling.h b/include/linux/cpu_cooling.h index b30cc79c7a82..40b4ef54cc7d 100644 --- a/include/linux/cpu_cooling.h +++ b/include/linux/cpu_cooling.h @@ -29,7 +29,7 @@ #define CPUFREQ_COOLING_START 0 #define CPUFREQ_COOLING_STOP 1 -#ifdef CONFIG_CPU_THERMAL +#if defined(CONFIG_CPU_THERMAL) || defined(CONFIG_CPU_THERMAL_MODULE) /** * cpufreq_cooling_register - function to create cpufreq cooling device. * @clip_cpus: cpumask of cpus where the frequency constraints will happen -- cgit v1.2.3 From 83af24027b3df1af5c5a9aa9adcdcfeb3429d3be Mon Sep 17 00:00:00 2001 From: "Philip, Avinash" Date: Wed, 21 Nov 2012 13:10:44 +0530 Subject: pwm: Device tree support for PWM polarity Add support for encoding PWM properties in bit encoded form with of_pwm_xlate_with_flags() function support. Platforms require platform specific PWM properties has to populate in 3rd cell of the pwm-specifier and PWM driver should also set .of_xlate support with this function. Currently PWM property polarity encoded in bit position 0 of the third cell in pwm-specifier. Signed-off-by: Philip, Avinash Acked-by: Grant Likely Signed-off-by: Thierry Reding --- include/linux/pwm.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pwm.h b/include/linux/pwm.h index 112b31436848..6d661f32e0e4 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -171,6 +171,9 @@ struct pwm_device *pwm_request_from_chip(struct pwm_chip *chip, unsigned int index, const char *label); +struct pwm_device *of_pwm_xlate_with_flags(struct pwm_chip *pc, + const struct of_phandle_args *args); + struct pwm_device *pwm_get(struct device *dev, const char *consumer); void pwm_put(struct pwm_device *pwm); -- cgit v1.2.3 From acad189b08456722ca4a8984218d6f38f4563cbc Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Thu, 22 Nov 2012 11:12:04 +0100 Subject: mfd: Add an AS3711 PMIC MFD driver AS3711 is a PMIC with multiple DCDC and LDO power supplies, GPIOs, an RTC, a battery charger and a general purpose ADC. This patch adds support for the MFD with support for a regulator driver and a backlight driver. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Samuel Ortiz --- include/linux/mfd/as3711.h | 126 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 126 insertions(+) create mode 100644 include/linux/mfd/as3711.h (limited to 'include/linux') diff --git a/include/linux/mfd/as3711.h b/include/linux/mfd/as3711.h new file mode 100644 index 000000000000..38452ce1e892 --- /dev/null +++ b/include/linux/mfd/as3711.h @@ -0,0 +1,126 @@ +/* + * AS3711 PMIC MFC driver header + * + * Copyright (C) 2012 Renesas Electronics Corporation + * Author: Guennadi Liakhovetski, + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the version 2 of the GNU General Public License as + * published by the Free Software Foundation + */ + +#ifndef MFD_AS3711_H +#define MFD_AS3711_H + +/* + * Client data + */ + +/* Register addresses */ +#define AS3711_SD_1_VOLTAGE 0 /* Digital Step-Down */ +#define AS3711_SD_2_VOLTAGE 1 +#define AS3711_SD_3_VOLTAGE 2 +#define AS3711_SD_4_VOLTAGE 3 +#define AS3711_LDO_1_VOLTAGE 4 /* Analog LDO */ +#define AS3711_LDO_2_VOLTAGE 5 +#define AS3711_LDO_3_VOLTAGE 6 /* Digital LDO */ +#define AS3711_LDO_4_VOLTAGE 7 +#define AS3711_LDO_5_VOLTAGE 8 +#define AS3711_LDO_6_VOLTAGE 9 +#define AS3711_LDO_7_VOLTAGE 0xa +#define AS3711_LDO_8_VOLTAGE 0xb +#define AS3711_SD_CONTROL 0x10 +#define AS3711_GPIO_SIGNAL_OUT 0x20 +#define AS3711_GPIO_SIGNAL_IN 0x21 +#define AS3711_SD_CONTROL_1 0x30 +#define AS3711_SD_CONTROL_2 0x31 +#define AS3711_CURR_CONTROL 0x40 +#define AS3711_CURR1_VALUE 0x43 +#define AS3711_CURR2_VALUE 0x44 +#define AS3711_CURR3_VALUE 0x45 +#define AS3711_STEPUP_CONTROL_1 0x50 +#define AS3711_STEPUP_CONTROL_2 0x51 +#define AS3711_STEPUP_CONTROL_4 0x53 +#define AS3711_STEPUP_CONTROL_5 0x54 +#define AS3711_REG_STATUS 0x73 +#define AS3711_INTERRUPT_STATUS_1 0x77 +#define AS3711_INTERRUPT_STATUS_2 0x78 +#define AS3711_INTERRUPT_STATUS_3 0x79 +#define AS3711_CHARGER_STATUS_1 0x86 +#define AS3711_CHARGER_STATUS_2 0x87 +#define AS3711_ASIC_ID_1 0x90 +#define AS3711_ASIC_ID_2 0x91 + +#define AS3711_MAX_REGS 0x92 + +/* Regulators */ +enum { + AS3711_REGULATOR_SD_1, + AS3711_REGULATOR_SD_2, + AS3711_REGULATOR_SD_3, + AS3711_REGULATOR_SD_4, + AS3711_REGULATOR_LDO_1, + AS3711_REGULATOR_LDO_2, + AS3711_REGULATOR_LDO_3, + AS3711_REGULATOR_LDO_4, + AS3711_REGULATOR_LDO_5, + AS3711_REGULATOR_LDO_6, + AS3711_REGULATOR_LDO_7, + AS3711_REGULATOR_LDO_8, + + AS3711_REGULATOR_MAX, +}; + +struct device; +struct regmap; + +struct as3711 { + struct device *dev; + struct regmap *regmap; +}; + +#define AS3711_MAX_STEPDOWN 4 +#define AS3711_MAX_STEPUP 2 +#define AS3711_MAX_LDO 8 + +enum as3711_su2_feedback { + AS3711_SU2_VOLTAGE, + AS3711_SU2_CURR1, + AS3711_SU2_CURR2, + AS3711_SU2_CURR3, + AS3711_SU2_CURR_AUTO, +}; + +enum as3711_su2_fbprot { + AS3711_SU2_LX_SD4, + AS3711_SU2_GPIO2, + AS3711_SU2_GPIO3, + AS3711_SU2_GPIO4, +}; + +/* + * Platform data + */ + +struct as3711_regulator_pdata { + struct regulator_init_data *init_data[AS3711_REGULATOR_MAX]; +}; + +struct as3711_bl_pdata { + const char *su1_fb; + int su1_max_uA; + const char *su2_fb; + int su2_max_uA; + enum as3711_su2_feedback su2_feedback; + enum as3711_su2_fbprot su2_fbprot; + bool su2_auto_curr1; + bool su2_auto_curr2; + bool su2_auto_curr3; +}; + +struct as3711_platform_data { + struct as3711_regulator_pdata regulator; + struct as3711_bl_pdata backlight; +}; + +#endif -- cgit v1.2.3 From 907ddf89d0bb7f57e1e21485900e6564a1ab512a Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Fri, 23 Nov 2012 12:23:40 +0100 Subject: i2c / ACPI: add ACPI enumeration support ACPI 5 introduced I2cSerialBus resource that makes it possible to enumerate and configure the I2C slave devices behind the I2C controller. This patch adds helper functions to support I2C slave enumeration. An ACPI enabled I2C controller driver only needs to call acpi_i2c_register_devices() in order to get its slave devices enumerated, created and bound to the corresponding ACPI handle. Signed-off-by: Mika Westerberg Signed-off-by: Rafael J. Wysocki --- include/linux/i2c.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 800de224336b..d0c4db7b4872 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -259,6 +259,7 @@ static inline void i2c_set_clientdata(struct i2c_client *dev, void *data) * @platform_data: stored in i2c_client.dev.platform_data * @archdata: copied into i2c_client.dev.archdata * @of_node: pointer to OpenFirmware device node + * @acpi_node: ACPI device node * @irq: stored in i2c_client.irq * * I2C doesn't actually support hardware probing, although controllers and @@ -279,6 +280,7 @@ struct i2c_board_info { void *platform_data; struct dev_archdata *archdata; struct device_node *of_node; + struct acpi_dev_node acpi_node; int irq; }; @@ -501,4 +503,11 @@ static inline int i2c_adapter_id(struct i2c_adapter *adap) i2c_del_driver) #endif /* I2C */ + +#if IS_ENABLED(CONFIG_ACPI_I2C) +extern void acpi_i2c_register_devices(struct i2c_adapter *adap); +#else +static inline void acpi_i2c_register_devices(struct i2c_adapter *adap) {} +#endif + #endif /* _LINUX_I2C_H */ -- cgit v1.2.3 From a8a8fc287dd7497b3adb2f2952513849ab6506eb Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 8 Oct 2012 11:21:09 +0900 Subject: mfd: wm8994: Store platform data in device This is better style as platform data is supposed to be discardable after init (though hotplug usually prevents this) and will ease implementation of device tree property bindings. Signed-off-by: Mark Brown Acked-by: Samuel Ortiz --- include/linux/mfd/wm8994/core.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/core.h b/include/linux/mfd/wm8994/core.h index 1f173306bf05..ae5c249530b4 100644 --- a/include/linux/mfd/wm8994/core.h +++ b/include/linux/mfd/wm8994/core.h @@ -19,6 +19,8 @@ #include #include +#include + enum wm8994_type { WM8994 = 0, WM8958 = 1, @@ -55,6 +57,8 @@ struct regulator_bulk_data; struct wm8994 { struct mutex irq_lock; + struct wm8994_pdata pdata; + enum wm8994_type type; int revision; int cust_id; -- cgit v1.2.3 From 1ad7e89940d5ac411928189e1a4a01901dbf590f Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Thu, 8 Nov 2012 16:12:25 -0800 Subject: block: store partition_meta_info.uuid as a string This will allow other types of UUID to be stored here, aside from true UUIDs. This also simplifies code that uses this field, since it's usually constructed from a, used as a, or compared to other, strings. Note: A simplistic approach here would be to set uuid_str[36]=0 whenever a /PARTNROFF option was found to be present. However, this modifies the input string, and causes subsequent calls to devt_from_partuuid() not to see the /PARTNROFF option, which causes different results. In order to avoid misleading future maintainers, this parameter is marked const. Signed-off-by: Stephen Warren Cc: Tejun Heo Cc: Will Drewry Cc: Kay Sievers Signed-off-by: Andrew Morton Signed-off-by: Jens Axboe --- include/linux/genhd.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 4f440b3e89fe..79b8bba19363 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -88,10 +88,14 @@ struct disk_stats { }; #define PARTITION_META_INFO_VOLNAMELTH 64 -#define PARTITION_META_INFO_UUIDLTH 16 +/* + * Enough for the string representation of any kind of UUID plus NULL. + * EFI UUID is 36 characters. MSDOS UUID is 11 characters. + */ +#define PARTITION_META_INFO_UUIDLTH 37 struct partition_meta_info { - u8 uuid[PARTITION_META_INFO_UUIDLTH]; /* always big endian */ + char uuid[PARTITION_META_INFO_UUIDLTH]; u8 volname[PARTITION_META_INFO_VOLNAMELTH]; }; -- cgit v1.2.3 From 93272e07d8539cddce9a2a17b7b0de1326957599 Mon Sep 17 00:00:00 2001 From: Jean-Christophe PLAGNIOL-VILLARD Date: Wed, 21 Nov 2012 05:38:07 +0000 Subject: net: add micrel KSZ8873MLL switch support this will allow to detect the link between the switch and the soc Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller --- include/linux/micrel_phy.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/micrel_phy.h b/include/linux/micrel_phy.h index de201203bc7c..adfe8c058f29 100644 --- a/include/linux/micrel_phy.h +++ b/include/linux/micrel_phy.h @@ -15,6 +15,7 @@ #define MICREL_PHY_ID_MASK 0x00fffff0 +#define PHY_ID_KSZ8873MLL 0x000e7237 #define PHY_ID_KSZ9021 0x00221610 #define PHY_ID_KS8737 0x00221720 #define PHY_ID_KSZ8021 0x00221555 -- cgit v1.2.3 From e5f5762177be52fde50ccba88938d66b5103c8e0 Mon Sep 17 00:00:00 2001 From: Li Haifeng Date: Fri, 23 Nov 2012 21:55:19 +0100 Subject: PM / Freezer: Fixup compile error of try_to_freeze_nowarn() If FREEZER is not defined, the error as following will be throw when compiled. arch/arm/kernel/signal.c:645: error: implicit declaration of function 'try_to_freeze_nowarn' Signed-off-by: Haifeng Li Signed-off-by: Rafael J. Wysocki --- include/linux/freezer.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/freezer.h b/include/linux/freezer.h index d09af4b67cf1..b90091af5798 100644 --- a/include/linux/freezer.h +++ b/include/linux/freezer.h @@ -177,6 +177,7 @@ static inline int freeze_kernel_threads(void) { return -ENOSYS; } static inline void thaw_processes(void) {} static inline void thaw_kernel_threads(void) {} +static inline bool try_to_freeze_nowarn(void) { return false; } static inline bool try_to_freeze(void) { return false; } static inline void freezer_do_not_count(void) {} -- cgit v1.2.3 From 0e622d39197f0b64b9e043fe75ac3634bf9f3a05 Mon Sep 17 00:00:00 2001 From: Andreas Larsson Date: Fri, 23 Nov 2012 12:24:09 +0100 Subject: of/address: sparc: Declare of_iomap as an extern function for sparc again This bug-fix makes sure that of_iomap is defined extern for sparc so that the sparc-specific implementation of_iomap is once again used when including include/linux/of_address.h in a sparc context. OF_GPIO that is now available for sparc relies on this. The bug was inadvertently introduced in a850a75, "of/address: add empty static inlines for !CONFIG_OF", that added a static dummy inline for of_iomap when !CONFIG_OF_ADDRESS. However, CONFIG_OF_ADDRESS is never defined for sparc, but there is a sparc-specific implementation /arch/sparc/kernel/of_device_common.c. This fix takes the same approach as 0bce04b that solved the equivalent problem for of_address_to_resource. Signed-off-by: Andreas Larsson Acked-by: David Miller Signed-off-by: Grant Likely --- include/linux/of_address.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of_address.h b/include/linux/of_address.h index e20e3af68fb6..0506eb53519b 100644 --- a/include/linux/of_address.h +++ b/include/linux/of_address.h @@ -42,10 +42,12 @@ static inline struct device_node *of_find_matching_node_by_address( { return NULL; } +#ifndef of_iomap static inline void __iomem *of_iomap(struct device_node *device, int index) { return NULL; } +#endif static inline const __be32 *of_get_address(struct device_node *dev, int index, u64 *size, unsigned int *flags) { -- cgit v1.2.3 From b88ce2a41562d1a9554f209e0f31a32d9f473794 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 26 Nov 2012 10:03:06 +0100 Subject: ACPI / PM: Allow attach/detach routines to change device power states Make it possible to ask the routines used for adding/removing devices to/from the general ACPI PM domain, acpi_dev_pm_attach() and acpi_dev_pm_detach(), respectively, to change the power states of devices so that they are put into the full-power state automatically by acpi_dev_pm_attach() and into the lowest-power state available automatically by acpi_dev_pm_detach(). Signed-off-by: Rafael J. Wysocki Reviewed-by: Mika Westerberg Tested-by: Mika Westerberg --- include/linux/acpi.h | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 5fdd87271518..28ba643c92c1 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -458,11 +458,14 @@ static inline int acpi_subsys_resume_early(struct device *dev) { return 0; } #endif #if defined(CONFIG_ACPI) && defined(CONFIG_PM) -int acpi_dev_pm_attach(struct device *dev); -int acpi_dev_pm_detach(struct device *dev); +int acpi_dev_pm_attach(struct device *dev, bool power_on); +int acpi_dev_pm_detach(struct device *dev, bool power_off); #else -static inline int acpi_dev_pm_attach(struct device *dev) { return -ENODEV; } -static inline void acpi_dev_pm_detach(struct device *dev) {} +static inline int acpi_dev_pm_attach(struct device *dev, bool power_on) +{ + return -ENODEV; +} +static inline void acpi_dev_pm_detach(struct device *dev, bool power_off) {} #endif #endif /*_LINUX_ACPI_H*/ -- cgit v1.2.3 From 883d588e556347c4b3221ac492a8acd8a75e730a Mon Sep 17 00:00:00 2001 From: MyungJoo Ham Date: Wed, 21 Nov 2012 17:17:11 +0900 Subject: PM / devfreq: remove compiler error when a governor is module With the intruction of patch, eff607fdb1f787da1fedf46ab6e64adc2afd1c5a, it became possible to include a governor as a module. Thus the #ifdef statement for a governor should become #if IS_ENABLED. Signed-off-by: MyungJoo Ham --- include/linux/devfreq.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h index 235248cb2c93..e83ef39b3bea 100644 --- a/include/linux/devfreq.h +++ b/include/linux/devfreq.h @@ -192,7 +192,7 @@ extern int devfreq_register_opp_notifier(struct device *dev, extern int devfreq_unregister_opp_notifier(struct device *dev, struct devfreq *devfreq); -#ifdef CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND +#if IS_ENABLED(CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND) /** * struct devfreq_simple_ondemand_data - void *data fed to struct devfreq * and devfreq_add_device -- cgit v1.2.3 From 65821635d26d3173a3b22781e2c60d5e6fcaeb22 Mon Sep 17 00:00:00 2001 From: Marco Porsch Date: Wed, 21 Nov 2012 18:40:30 -0800 Subject: mac80211: move Mesh Capability field definition to ieee80211.h Signed-off-by: Marco Porsch [prefix with IEEE80211_] Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index d68790903b9e..65c6b0f3ef60 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -667,6 +667,21 @@ struct ieee80211_meshconf_ie { u8 meshconf_cap; } __attribute__ ((packed)); +/** + * enum mesh_config_capab_flags - Mesh Configuration IE capability field flags + * + * @IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS: STA is willing to establish + * additional mesh peerings with other mesh STAs + * @IEEE80211_MESHCONF_CAPAB_FORWARDING: the STA forwards MSDUs + * @IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING: TBTT adjustment procedure + * is ongoing + */ +enum mesh_config_capab_flags { + IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS = 0x01, + IEEE80211_MESHCONF_CAPAB_FORWARDING = 0x08, + IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING = 0x20, +}; + /** * struct ieee80211_rann_ie * -- cgit v1.2.3 From 3f9be35bd9090eaa2f68ed9b24efdbf3abcf4b28 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Tue, 20 Nov 2012 10:34:56 +0800 Subject: mfd: rc5t583: Fix array subscript is above array bounds I got below build warning while compiling this driver. It's obviously RC5T583_MAX_INTERRUPT_MASK_REGS is 9 but irq_en_add array only has 8 elements. CC drivers/mfd/rc5t583-irq.o drivers/mfd/rc5t583-irq.c: In function 'rc5t583_irq_sync_unlock': drivers/mfd/rc5t583-irq.c:227: warning: array subscript is above array bounds drivers/mfd/rc5t583-irq.c: In function 'rc5t583_irq_init': drivers/mfd/rc5t583-irq.c:349: warning: array subscript is above array bounds Since the number of interrupt enable registers is 8, this patch adds define for RC5T583_MAX_INTERRUPT_EN_REGS to fix this bug. Signed-off-by: Axel Lin Acked-by: Laxman Dewangan Signed-off-by: Samuel Ortiz --- include/linux/mfd/rc5t583.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/rc5t583.h b/include/linux/mfd/rc5t583.h index 36c242e52ef1..fd413ccab915 100644 --- a/include/linux/mfd/rc5t583.h +++ b/include/linux/mfd/rc5t583.h @@ -33,6 +33,7 @@ /* Maximum number of main interrupts */ #define MAX_MAIN_INTERRUPT 5 #define RC5T583_MAX_GPEDGE_REG 2 +#define RC5T583_MAX_INTERRUPT_EN_REGS 8 #define RC5T583_MAX_INTERRUPT_MASK_REGS 9 /* Interrupt enable register */ @@ -304,7 +305,7 @@ struct rc5t583 { uint8_t intc_inten_reg; /* For group interrupt bits and address */ - uint8_t irq_en_reg[RC5T583_MAX_INTERRUPT_MASK_REGS]; + uint8_t irq_en_reg[RC5T583_MAX_INTERRUPT_EN_REGS]; /* For gpio edge */ uint8_t gpedge_reg[RC5T583_MAX_GPEDGE_REG]; -- cgit v1.2.3 From df1590d9ae5e37e07e7cf91107e4c2c946ce8bf4 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Mon, 12 Nov 2012 22:56:03 +0530 Subject: ARM: SPEAr3xx: Shirq: Move shirq controller out of plat/ This patch moves shirq interrupt controllers driver and header file out of plat-spear directory. It is moved to drivers/irqchip/ directory. Signed-off-by: Viresh Kumar --- include/linux/irqchip/spear-shirq.h | 64 +++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 include/linux/irqchip/spear-shirq.h (limited to 'include/linux') diff --git a/include/linux/irqchip/spear-shirq.h b/include/linux/irqchip/spear-shirq.h new file mode 100644 index 000000000000..c8be16d213a3 --- /dev/null +++ b/include/linux/irqchip/spear-shirq.h @@ -0,0 +1,64 @@ +/* + * SPEAr platform shared irq layer header file + * + * Copyright (C) 2009-2012 ST Microelectronics + * Viresh Kumar + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#ifndef __SPEAR_SHIRQ_H +#define __SPEAR_SHIRQ_H + +#include +#include + +/* + * struct shirq_regs: shared irq register configuration + * + * enb_reg: enable register offset + * reset_to_enb: val 1 indicates, we need to clear bit for enabling interrupt + * status_reg: status register offset + * status_reg_mask: status register valid mask + * clear_reg: clear register offset + * reset_to_clear: val 1 indicates, we need to clear bit for clearing interrupt + */ +struct shirq_regs { + u32 enb_reg; + u32 reset_to_enb; + u32 status_reg; + u32 clear_reg; + u32 reset_to_clear; +}; + +/* + * struct spear_shirq: shared irq structure + * + * irq: hardware irq number + * irq_base: base irq in linux domain + * irq_nr: no. of shared interrupts in a particular block + * irq_bit_off: starting bit offset in the status register + * invalid_irq: irq group is currently disabled + * base: base address of shared irq register + * regs: register configuration for shared irq block + */ +struct spear_shirq { + u32 irq; + u32 irq_base; + u32 irq_nr; + u32 irq_bit_off; + int invalid_irq; + void __iomem *base; + struct shirq_regs regs; +}; + +int __init spear300_shirq_of_init(struct device_node *np, + struct device_node *parent); +int __init spear310_shirq_of_init(struct device_node *np, + struct device_node *parent); +int __init spear320_shirq_of_init(struct device_node *np, + struct device_node *parent); + +#endif /* __SPEAR_SHIRQ_H */ -- cgit v1.2.3 From 7173a1fa53dff94f771a66b93623500424376015 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 12 Nov 2012 11:44:18 +0100 Subject: wireless: add definitions for VHT MCS support Add definitions for the VHT MCS support values that are used to indicate, for each number of streams (1 through 8) which MCSes are supported. Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 65c6b0f3ef60..f9c5a787d350 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -1163,11 +1163,13 @@ struct ieee80211_ht_operation { * STA can receive. Rate expressed in units of 1 Mbps. * If this field is 0 this value should not be used to * consider the highest RX data rate supported. + * The top 3 bits of this field are reserved. * @tx_mcs_map: TX MCS map 2 bits for each stream, total 8 streams * @tx_highest: Indicates highest long GI VHT PPDU data rate * STA can transmit. Rate expressed in units of 1 Mbps. * If this field is 0 this value should not be used to * consider the highest TX data rate supported. + * The top 3 bits of this field are reserved. */ struct ieee80211_vht_mcs_info { __le16 rx_mcs_map; @@ -1176,6 +1178,27 @@ struct ieee80211_vht_mcs_info { __le16 tx_highest; } __packed; +/** + * enum ieee80211_vht_mcs_support - VHT MCS support definitions + * @IEEE80211_VHT_MCS_SUPPORT_0_7: MCSes 0-7 are supported for the + * number of streams + * @IEEE80211_VHT_MCS_SUPPORT_0_8: MCSes 0-8 are supported + * @IEEE80211_VHT_MCS_SUPPORT_0_9: MCSes 0-9 are supported + * @IEEE80211_VHT_MCS_NOT_SUPPORTED: This number of streams isn't supported + * + * These definitions are used in each 2-bit subfield of the @rx_mcs_map + * and @tx_mcs_map fields of &struct ieee80211_vht_mcs_info, which are + * both split into 8 subfields by number of streams. These values indicate + * which MCSes are supported for the number of streams the value appears + * for. + */ +enum ieee80211_vht_mcs_support { + IEEE80211_VHT_MCS_SUPPORT_0_7 = 0, + IEEE80211_VHT_MCS_SUPPORT_0_8 = 1, + IEEE80211_VHT_MCS_SUPPORT_0_9 = 2, + IEEE80211_VHT_MCS_NOT_SUPPORTED = 3, +}; + /** * struct ieee80211_vht_cap - VHT capabilities * -- cgit v1.2.3 From 08ff32352d6ff7083533dc1c25618d42f92ec28e Mon Sep 17 00:00:00 2001 From: Or Gerlitz Date: Sun, 21 Oct 2012 14:59:24 +0000 Subject: mlx4: 64-byte CQE/EQE support ConnectX-3 devices can use either 64- or 32-byte completion queue entries (CQEs) and event queue entries (EQEs). Using 64-byte EQEs/CQEs performs better because each entry is aligned to a complete cacheline. This patch queries the HCA's capabilities, and if it supports 64-byte CQEs and EQES the driver will configure the HW to work in 64-byte mode. The 32-byte vs 64-byte mode is global per HCA and not per CQ or EQ. Since this mode is global, userspace (libmlx4) must be updated to work with the configured CQE size, and guests using SR-IOV virtual functions need to know both EQE and CQE size. In case one of the 64-byte CQE/EQE capabilities is activated, the patch makes sure that older guest drivers that use the QUERY_DEV_FUNC command (e.g as done in mlx4_core of Linux 3.3..3.6) will notice that they need an update to be able to work with the PPF. This is done by changing the returned pf_context_behaviour not to be zero any more. In case none of these capabilities is activated that value remains zero and older guest drivers can run OK. The SRIOV related flow is as follows 1. the PPF does the detection of the new capabilities using QUERY_DEV_CAP command. 2. the PPF activates the new capabilities using INIT_HCA. 3. the VF detects if the PPF activated the capabilities using QUERY_HCA, and if this is the case activates them for itself too. Note that the VF detects that it must be aware to the new PF behaviour using QUERY_FUNC_CAP. Steps 1 and 2 apply also for native mode. User space notification is done through a new field introduced in struct mlx4_ib_ucontext which holds device capabilities for which user space must take action. This changes the binary interface so the ABI towards libmlx4 exposed through uverbs is bumped from 3 to 4 but only when **needed** i.e. only when the driver does use 64-byte CQEs or future device capabilities which must be in sync by user space. This practice allows to work with unmodified libmlx4 on older devices (e.g A0, B0) which don't support 64-byte CQEs. In order to keep existing systems functional when they update to a newer kernel that contains these changes in VF and userspace ABI, a module parameter enable_64b_cqe_eqe must be set to enable 64-byte mode; the default is currently false. Signed-off-by: Eli Cohen Signed-off-by: Or Gerlitz Signed-off-by: Roland Dreier --- include/linux/mlx4/device.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index 6d1acb04cd17..21821da2abfd 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -142,6 +142,8 @@ enum { MLX4_DEV_CAP_FLAG_COUNTERS = 1LL << 48, MLX4_DEV_CAP_FLAG_SENSE_SUPPORT = 1LL << 55, MLX4_DEV_CAP_FLAG_PORT_MNG_CHG_EV = 1LL << 59, + MLX4_DEV_CAP_FLAG_64B_EQE = 1LL << 61, + MLX4_DEV_CAP_FLAG_64B_CQE = 1LL << 62 }; enum { @@ -151,6 +153,20 @@ enum { MLX4_DEV_CAP_FLAG2_FS_EN = 1LL << 3 }; +enum { + MLX4_DEV_CAP_64B_EQE_ENABLED = 1LL << 0, + MLX4_DEV_CAP_64B_CQE_ENABLED = 1LL << 1 +}; + +enum { + MLX4_USER_DEV_CAP_64B_CQE = 1L << 0 +}; + +enum { + MLX4_FUNC_CAP_64B_EQE_CQE = 1L << 0 +}; + + #define MLX4_ATTR_EXTENDED_PORT_INFO cpu_to_be16(0xff90) enum { @@ -419,6 +435,11 @@ struct mlx4_caps { u32 max_counters; u8 port_ib_mtu[MLX4_MAX_PORTS + 1]; u16 sqp_demux; + u32 eqe_size; + u32 cqe_size; + u8 eqe_factor; + u32 userspace_caps; /* userspace must be aware of these */ + u32 function_caps; /* VFs must be aware of these */ }; struct mlx4_buf_list { -- cgit v1.2.3 From 39c7caebc94e851f58b84b54659156dd30522e8e Mon Sep 17 00:00:00 2001 From: Ansis Atteka Date: Mon, 26 Nov 2012 11:24:11 -0800 Subject: openvswitch: add skb mark matching and set action This patch adds support for skb mark matching and set action. Signed-off-by: Ansis Atteka Signed-off-by: Jesse Gross --- include/linux/openvswitch.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/openvswitch.h b/include/linux/openvswitch.h index eb1efa54fe84..d42e174bd0c8 100644 --- a/include/linux/openvswitch.h +++ b/include/linux/openvswitch.h @@ -243,6 +243,7 @@ enum ovs_key_attr { OVS_KEY_ATTR_ICMPV6, /* struct ovs_key_icmpv6 */ OVS_KEY_ATTR_ARP, /* struct ovs_key_arp */ OVS_KEY_ATTR_ND, /* struct ovs_key_nd */ + OVS_KEY_ATTR_SKB_MARK, /* u32 skb mark */ __OVS_KEY_ATTR_MAX }; -- cgit v1.2.3 From e95c17e9caff4b106cc95b761f3e07964a5a0d9f Mon Sep 17 00:00:00 2001 From: Timur Tabi Date: Tue, 16 Oct 2012 17:33:44 -0500 Subject: drivers/video: fsl-diu-fb: add support for set_gamma ioctls The MPC5121 BSP comes with a gamma_set utility that initializes the gamma table via an ioctl. Unfortunately, the ioctl number that utility uses is defined improperly, but we can still support it. Signed-off-by: Timur Tabi --- include/linux/fsl-diu-fb.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fsl-diu-fb.h b/include/linux/fsl-diu-fb.h index 11c16a1fb9e3..a1e8277120c7 100644 --- a/include/linux/fsl-diu-fb.h +++ b/include/linux/fsl-diu-fb.h @@ -46,6 +46,15 @@ struct aoi_display_offset { #define MFB_SET_PIXFMT _IOW('M', 8, __u32) #define MFB_GET_PIXFMT _IOR('M', 8, __u32) +/* + * The MPC5121 BSP comes with a gamma_set utility that initializes the + * gamma table. Unfortunately, it uses bad values for the IOCTL commands, + * but there's nothing we can do about it now. These ioctls are only + * supported on the MPC5121. + */ +#define MFB_SET_GAMMA _IOW('M', 1, __u8) +#define MFB_GET_GAMMA _IOR('M', 1, __u8) + /* * The original definitions of MFB_SET_PIXFMT and MFB_GET_PIXFMT used the * wrong value for 'size' field of the ioctl. The current macros above use the -- cgit v1.2.3 From 0751f8654602e4255f0b9c17784d8100d5896010 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 24 Nov 2012 19:34:17 +0100 Subject: bcma: add more package IDs Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/bcma/bcma.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma.h b/include/linux/bcma/bcma.h index fd15d9829705..93b1e091b1e9 100644 --- a/include/linux/bcma/bcma.h +++ b/include/linux/bcma/bcma.h @@ -157,6 +157,7 @@ struct bcma_host_ops { /* Chip IDs of SoCs */ #define BCMA_CHIP_ID_BCM4706 0x5300 +#define BCMA_PKG_ID_BCM4706L 1 #define BCMA_CHIP_ID_BCM4716 0x4716 #define BCMA_PKG_ID_BCM4716 8 #define BCMA_PKG_ID_BCM4717 9 @@ -166,7 +167,11 @@ struct bcma_host_ops { #define BCMA_CHIP_ID_BCM4749 0x4749 #define BCMA_CHIP_ID_BCM5356 0x5356 #define BCMA_CHIP_ID_BCM5357 0x5357 +#define BCMA_PKG_ID_BCM5358 9 +#define BCMA_PKG_ID_BCM47186 10 +#define BCMA_PKG_ID_BCM5357 11 #define BCMA_CHIP_ID_BCM53572 53572 +#define BCMA_PKG_ID_BCM47188 9 struct bcma_device { struct bcma_bus *bus; -- cgit v1.2.3 From 918b4053184c0ca22236e70e299c5343eea35304 Mon Sep 17 00:00:00 2001 From: Vijay Mohan Pandarathil Date: Sat, 17 Nov 2012 11:47:18 +0000 Subject: PCI/AER: Report success only when every device has AER-aware driver When an error is detected on a PCIe device which does not have an AER-aware driver, prevent AER infrastructure from reporting successful error recovery. This is because the report_error_detected() function that gets called in the first phase of recovery process allows forward progress even when the driver for the device does not have AER capabilities. It seems that all callbacks (in pci_error_handlers structure) registered by drivers that gets called during error recovery are not mandatory. So the intention of the infrastructure design seems to be to allow forward progress even when a specific callback has not been registered by a driver. However, if error handler structure itself has not been registered, it doesn't make sense to allow forward progress. As a result of the current design, in the case of a single device having an AER-unaware driver or in the case of any function in a multi-function card having an AER-unaware driver, a successful recovery is reported. Typical scenario this happens is when a PCI device is detached from a KVM host and the pci-stub driver on the host claims the device. The pci-stub driver does not have error handling capabilities but the AER infrastructure still reports that the device recovered successfully. The changes proposed here leaves the device(s)in an unrecovered state if the driver for the device or for any device in the subtree does not have error handler structure registered. This reflects the true state of the device and prevents any partial recovery (or no recovery at all) reported as successful. [bhelgaas: changelog] Signed-off-by: Vijay Mohan Pandarathil Signed-off-by: Bjorn Helgaas Reviewed-by: Linas Vepstas Reviewed-by: Myron Stowe --- include/linux/pci.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index ee2179546c63..fb7e8699673d 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -538,6 +538,9 @@ enum pci_ers_result { /* Device driver is fully recovered and operational */ PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5, + + /* No AER capabilities registered for the driver */ + PCI_ERS_RESULT_NO_AER_DRIVER = (__force pci_ers_result_t) 6, }; /* PCI bus error event callbacks */ -- cgit v1.2.3 From 62a2ab935c8d0f8643d02d3696abc401b5da6206 Mon Sep 17 00:00:00 2001 From: Giuseppe CAVALLARO Date: Sun, 25 Nov 2012 23:10:43 +0000 Subject: stmmac: add Rx watchdog support to mitigate the DMA irqs GMAC devices newer than databook 3.40 has an embedded timer that can be used for mitigating the number of interrupts. So this patch adds this optimizations. At any rate, the Rx watchdog can be disable (on bugged HW) by passing from the platform the riwt_off field. In this implementation the rx timer stored in the Reg9 is fixed to the max value. This will be tuned by using ethtool. V2: added a platform parameter to force to disable the rx-watchdog for example on new core where it is bugged. V3: do not disable NAPI when Rx watchdog is used. V4: a new extra statistic field has been added to show the early receive status in the interrupt handler. This patch also adds an extra check to avoid to call napi_schedule when the DMA_INTR_ENA_RIE bit is disabled in the Interrupt Mask register. Signed-off-by: Giuseppe Cavallaro Signed-off-by: David S. Miller --- include/linux/stmmac.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h index a1547ea3920d..de5b2f8176ce 100644 --- a/include/linux/stmmac.h +++ b/include/linux/stmmac.h @@ -104,6 +104,7 @@ struct plat_stmmacenet_data { int bugged_jumbo; int pmt; int force_sf_dma_mode; + int riwt_off; void (*fix_mac_speed)(void *priv, unsigned int speed); void (*bus_setup)(void __iomem *ioaddr); int (*init)(struct platform_device *pdev); -- cgit v1.2.3 From c91f6df2db4972d3cc983e6988b9abf1ad02f5f9 Mon Sep 17 00:00:00 2001 From: Brian Haley Date: Mon, 26 Nov 2012 05:21:08 +0000 Subject: sockopt: Change getsockopt() of SO_BINDTODEVICE to return an interface name Instead of having the getsockopt() of SO_BINDTODEVICE return an index, which will then require another call like if_indextoname() to get the actual interface name, have it return the name directly. This also matches the existing man page description on socket(7) which mentions the argument being an interface name. If the value has not been set, zero is returned and optlen will be set to zero to indicate there is no interface name present. Added a seqlock to protect this code path, and dev_ifname(), from someone changing the device name via dev_change_name(). v2: Added seqlock protection while copying device name. v3: Fixed word wrap in patch. Signed-off-by: Brian Haley Signed-off-by: David S. Miller --- include/linux/netdevice.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index e46c830c88d8..e9929abeb932 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1567,6 +1567,8 @@ extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev); extern rwlock_t dev_base_lock; /* Device list lock */ +extern seqlock_t devnet_rename_seq; /* Device rename lock */ + #define for_each_netdev(net, d) \ list_for_each_entry(d, &(net)->dev_base_head, dev_list) -- cgit v1.2.3 From a8df7b1ab70bfd6f261fa5e96985fca638299acc Mon Sep 17 00:00:00 2001 From: Fabio Baltieri Date: Sun, 4 Nov 2012 01:54:34 -0800 Subject: leds: add led_trigger_rename function Implements a "led_trigger_rename" function to rename a trigger with proper locking. This assumes that led name was originally allocated in non-constant storage. Signed-off-by: Fabio Baltieri Cc: Kurt Van Dijck Signed-off-by: Bryan Wu --- include/linux/leds.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'include/linux') diff --git a/include/linux/leds.h b/include/linux/leds.h index 6e53bb31c220..8107592cfc41 100644 --- a/include/linux/leds.h +++ b/include/linux/leds.h @@ -139,6 +139,24 @@ extern void led_blink_set_oneshot(struct led_classdev *led_cdev, extern void led_set_brightness(struct led_classdev *led_cdev, enum led_brightness brightness); +/** + * led_trigger_rename_static - rename a trigger + * @name: the new trigger name + * @trig: the LED trigger to rename + * + * Change a LED trigger name by copying the string passed in + * name into current trigger name, which MUST be large + * enough for the new string. + * + * Note that name must NOT point to the same string used + * during LED registration, as that could lead to races. + * + * This is meant to be used on triggers with statically + * allocated name. + */ +extern void led_trigger_rename_static(const char *name, + struct led_trigger *trig); + /* * LED Triggers */ -- cgit v1.2.3 From 057407c732b7761cf417a1e6633a02d9d473340d Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Sun, 18 Nov 2012 21:35:55 -0800 Subject: led: Add dependency on CONFIG_LEDS_TRIGGERS to led_trigger_rename_static() This patch fixes build warnings when CONFIG_LEDS_TRIGGERS is disabled as below: include/linux/leds.h:158:18: warning: 'struct led_trigger' declared inside parameter list [enabled by default] include/linux/leds.h:158:18: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default] Signed-off-by: Jingoo Han Acked-by: Fabio Baltieri Signed-off-by: Bryan Wu --- include/linux/leds.h | 35 +++++++++++++++++------------------ 1 file changed, 17 insertions(+), 18 deletions(-) (limited to 'include/linux') diff --git a/include/linux/leds.h b/include/linux/leds.h index 8107592cfc41..0d9b5eed714e 100644 --- a/include/linux/leds.h +++ b/include/linux/leds.h @@ -139,24 +139,6 @@ extern void led_blink_set_oneshot(struct led_classdev *led_cdev, extern void led_set_brightness(struct led_classdev *led_cdev, enum led_brightness brightness); -/** - * led_trigger_rename_static - rename a trigger - * @name: the new trigger name - * @trig: the LED trigger to rename - * - * Change a LED trigger name by copying the string passed in - * name into current trigger name, which MUST be large - * enough for the new string. - * - * Note that name must NOT point to the same string used - * during LED registration, as that could lead to races. - * - * This is meant to be used on triggers with statically - * allocated name. - */ -extern void led_trigger_rename_static(const char *name, - struct led_trigger *trig); - /* * LED Triggers */ @@ -197,6 +179,23 @@ extern void led_trigger_blink_oneshot(struct led_trigger *trigger, unsigned long *delay_on, unsigned long *delay_off, int invert); +/** + * led_trigger_rename_static - rename a trigger + * @name: the new trigger name + * @trig: the LED trigger to rename + * + * Change a LED trigger name by copying the string passed in + * name into current trigger name, which MUST be large + * enough for the new string. + * + * Note that name must NOT point to the same string used + * during LED registration, as that could lead to races. + * + * This is meant to be used on triggers with statically + * allocated name. + */ +extern void led_trigger_rename_static(const char *name, + struct led_trigger *trig); #else -- cgit v1.2.3 From e3725ec015dfbbeb896295cf2b3a995f28b0630e Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 16 Nov 2012 12:25:01 -0500 Subject: NFSv4.1: Shrink struct nfs4_sequence_res by moving the session pointer Move the session pointer into the slot table, then have struct nfs4_slot point to that slot table. Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 1 + include/linux/nfs_xdr.h | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 97c8f9191880..b0412873d29c 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -209,6 +209,7 @@ struct nfs_server { /* Sessions */ #define SLOT_TABLE_SZ DIV_ROUND_UP(NFS4_MAX_SLOT_TABLE, 8*sizeof(long)) struct nfs4_slot_table { + struct nfs4_session *session; /* Parent session */ struct nfs4_slot *slots; /* seqid per slot */ unsigned long used_slots[SLOT_TABLE_SZ]; /* used/unused bitmap */ spinlock_t slot_tbl_lock; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 9cb1c63a70c2..0fd88ab0e814 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -187,6 +187,7 @@ struct nfs4_channel_attrs { /* nfs41 sessions slot seqid */ struct nfs4_slot { + struct nfs4_slot_table *table; unsigned long renewal_time; u32 seq_nr; }; @@ -198,7 +199,6 @@ struct nfs4_sequence_args { }; struct nfs4_sequence_res { - struct nfs4_session *sr_session; struct nfs4_slot *sr_slot; /* slot used to send request */ int sr_status; /* sequence operation status */ u32 sr_status_flags; -- cgit v1.2.3 From df2fabffbace8988f3265585ec793ff9deccdea7 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 16 Nov 2012 12:45:06 -0500 Subject: NFSv4.1: Label each entry in the session slot tables with its slot number Instead of doing slot table pointer gymnastics every time we want to know which slot we're using. Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 0fd88ab0e814..9c9b76c94b46 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -189,6 +189,7 @@ struct nfs4_channel_attrs { struct nfs4_slot { struct nfs4_slot_table *table; unsigned long renewal_time; + u32 slot_nr; u32 seq_nr; }; -- cgit v1.2.3 From 2b2fa71723f955d5b4a0f4edd99cf3cd69ceafd1 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 16 Nov 2012 12:58:36 -0500 Subject: NFSv4.1: Simplify struct nfs4_sequence_args too Replace the session pointer + slotid with a pointer to the allocated slot. Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 9c9b76c94b46..deb31bbbb857 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -194,8 +194,7 @@ struct nfs4_slot { }; struct nfs4_sequence_args { - struct nfs4_session *sa_session; - u32 sa_slotid; + struct nfs4_slot *sa_slot; u8 sa_cache_this; }; -- cgit v1.2.3 From d80a361d779a9f19498943d1ca84243209cd5647 Mon Sep 17 00:00:00 2001 From: Seiji Aguchi Date: Wed, 14 Nov 2012 20:25:37 +0000 Subject: efi_pstore: Check remaining space with QueryVariableInfo() before writing data [Issue] As discussed in a thread below, Running out of space in EFI isn't a well-tested scenario. And we wouldn't expect all firmware to handle it gracefully. http://marc.info/?l=linux-kernel&m=134305325801789&w=2 On the other hand, current efi_pstore doesn't check a remaining space of storage at writing time. Therefore, efi_pstore may not work if it tries to write a large amount of data. [Patch Description] To avoid handling the situation above, this patch checks if there is a space enough to log with QueryVariableInfo() before writing data. Signed-off-by: Seiji Aguchi Acked-by: Mike Waychison Signed-off-by: Tony Luck --- include/linux/efi.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/efi.h b/include/linux/efi.h index 8670eb1eb8cd..c47ec36f3f39 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -643,6 +643,7 @@ struct efivar_operations { efi_get_variable_t *get_variable; efi_get_next_variable_t *get_next_variable; efi_set_variable_t *set_variable; + efi_query_variable_info_t *query_variable_info; }; struct efivars { -- cgit v1.2.3 From a9efd39cd547223597cfe7c53acec44c099b9264 Mon Sep 17 00:00:00 2001 From: Seiji Aguchi Date: Wed, 14 Nov 2012 20:27:28 +0000 Subject: efi_pstore: Add ctime to argument of erase callback [Issue] Currently, a variable name, which is used to identify each log entry, consists of type, id and ctime. But an erase callback does not use ctime. If efi_pstore supported just one log, type and id were enough. However, in case of supporting multiple logs, it doesn't work because it can't distinguish each entry without ctime at erasing time. As you can see below, efi_pstore can't differentiate first event from second one without ctime. a variable name of first event: dump-type0-1-12345678 a variable name of second event: dump-type0-1-23456789 type:0 id:1 ctime:12345678, 23456789 [Solution] This patch adds ctime to an argument of an erase callback. It works across reboots because ctime of pstore means the date that the record was originally stored. To do this, efi_pstore saves the ctime to variable name at writing time and passes it to pstore at reading time. Signed-off-by: Seiji Aguchi Acked-by: Mike Waychison Signed-off-by: Tony Luck --- include/linux/pstore.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pstore.h b/include/linux/pstore.h index ee3034a40884..f6e93362d259 100644 --- a/include/linux/pstore.h +++ b/include/linux/pstore.h @@ -60,7 +60,7 @@ struct pstore_info { unsigned int part, const char *buf, size_t size, struct pstore_info *psi); int (*erase)(enum pstore_type_id type, u64 id, - struct pstore_info *psi); + struct timespec time, struct pstore_info *psi); void *data; }; -- cgit v1.2.3 From 755d4fe46529018ae45bc7c86df682de45ace764 Mon Sep 17 00:00:00 2001 From: Seiji Aguchi Date: Mon, 26 Nov 2012 16:07:44 -0800 Subject: efi_pstore: Add a sequence counter to a variable name [Issue] Currently, a variable name, which identifies each entry, consists of type, id and ctime. But if multiple events happens in a short time, a second/third event may fail to log because efi_pstore can't distinguish each event with current variable name. [Solution] A reasonable way to identify all events precisely is introducing a sequence counter to the variable name. The sequence counter has already supported in a pstore layer with "oopscount". So, this patch adds it to a variable name. Also, it is passed to read/erase callbacks of platform drivers in accordance with the modification of the variable name. a variable name of first event: dump-type0-1-12345678 a variable name of second event: dump-type0-1-12345678 type:0 id:1 ctime:12345678 If multiple events happen in a short time, efi_pstore can't distinguish them because variable names are same among them. it can be distinguishable by adding a sequence counter as follows. a variable name of first event: dump-type0-1-1-12345678 a variable name of Second event: dump-type0-1-2-12345678 type:0 id:1 sequence counter: 1(first event), 2(second event) ctime:12345678 In case of a write callback executed in pstore_console_write(), "0" is added to an argument of the write callback because it just logs all kernel messages and doesn't need to care about multiple events. Signed-off-by: Seiji Aguchi Acked-by: Rafael J. Wysocki Acked-by: Mike Waychison Signed-off-by: Tony Luck --- include/linux/pstore.h | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pstore.h b/include/linux/pstore.h index f6e93362d259..1788909d9a99 100644 --- a/include/linux/pstore.h +++ b/include/linux/pstore.h @@ -50,17 +50,19 @@ struct pstore_info { int (*open)(struct pstore_info *psi); int (*close)(struct pstore_info *psi); ssize_t (*read)(u64 *id, enum pstore_type_id *type, - struct timespec *time, char **buf, + int *count, struct timespec *time, char **buf, struct pstore_info *psi); int (*write)(enum pstore_type_id type, enum kmsg_dump_reason reason, u64 *id, - unsigned int part, size_t size, struct pstore_info *psi); + unsigned int part, int count, size_t size, + struct pstore_info *psi); int (*write_buf)(enum pstore_type_id type, enum kmsg_dump_reason reason, u64 *id, unsigned int part, const char *buf, size_t size, struct pstore_info *psi); int (*erase)(enum pstore_type_id type, u64 id, - struct timespec time, struct pstore_info *psi); + int count, struct timespec time, + struct pstore_info *psi); void *data; }; -- cgit v1.2.3 From c5782e9f5a535af09d7834693a52afdbcc6e5f3f Mon Sep 17 00:00:00 2001 From: Tushar Behera Date: Mon, 26 Nov 2012 16:29:38 -0800 Subject: include/linux/bug.h: fix sparse warning related to BUILD_BUG_ON_INVALID Commit baf05aa9271b ("bug: introduce BUILD_BUG_ON_INVALID() macro") introduces this macro only when _CHECKER_ is not defined. Define a silent macro in the else condition to fix following sparse warning: mm/filemap.c:395:9: error: undefined identifier 'BUILD_BUG_ON_INVALID' mm/filemap.c:396:9: error: undefined identifier 'BUILD_BUG_ON_INVALID' mm/filemap.c:397:9: error: undefined identifier 'BUILD_BUG_ON_INVALID' include/linux/mm.h:419:9: error: undefined identifier 'BUILD_BUG_ON_INVALID' include/linux/mm.h:419:9: error: not a function Signed-off-by: Tushar Behera Acked-by: Konstantin Khlebnikov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/bug.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/bug.h b/include/linux/bug.h index aaac4bba6f5c..b1cf40de847e 100644 --- a/include/linux/bug.h +++ b/include/linux/bug.h @@ -15,6 +15,7 @@ struct pt_regs; #define BUILD_BUG_ON_NOT_POWER_OF_2(n) #define BUILD_BUG_ON_ZERO(e) (0) #define BUILD_BUG_ON_NULL(e) ((void*)0) +#define BUILD_BUG_ON_INVALID(e) (0) #define BUILD_BUG_ON(condition) #define BUILD_BUG() (0) #else /* __CHECKER__ */ -- cgit v1.2.3 From 82b212f40059bffd6808c07266a942d444d5558a Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Mon, 26 Nov 2012 16:29:45 -0800 Subject: Revert "mm: remove __GFP_NO_KSWAPD" With "mm: vmscan: scale number of pages reclaimed by reclaim/compaction based on failures" reverted, Zdenek Kabelac reported the following Hmm, so it's just took longer to hit the problem and observe kswapd0 spinning on my CPU again - it's not as endless like before - but still it easily eats minutes - it helps to turn off Firefox or TB (memory hungry apps) so kswapd0 stops soon - and restart those apps again. (And I still have like >1GB of cached memory) kswapd0 R running task 0 30 2 0x00000000 Call Trace: preempt_schedule+0x42/0x60 _raw_spin_unlock+0x55/0x60 put_super+0x31/0x40 drop_super+0x22/0x30 prune_super+0x149/0x1b0 shrink_slab+0xba/0x510 The sysrq+m indicates the system has no swap so it'll never reclaim anonymous pages as part of reclaim/compaction. That is one part of the problem but not the root cause as file-backed pages could also be reclaimed. The likely underlying problem is that kswapd is woken up or kept awake for each THP allocation request in the page allocator slow path. If compaction fails for the requesting process then compaction will be deferred for a time and direct reclaim is avoided. However, if there are a storm of THP requests that are simply rejected, it will still be the the case that kswapd is awake for a prolonged period of time as pgdat->kswapd_max_order is updated each time. This is noticed by the main kswapd() loop and it will not call kswapd_try_to_sleep(). Instead it will loopp, shrinking a small number of pages and calling shrink_slab() on each iteration. The temptation is to supply a patch that checks if kswapd was woken for THP and if so ignore pgdat->kswapd_max_order but it'll be a hack and not backed up by proper testing. As 3.7 is very close to release and this is not a bug we should release with, a safer path is to revert "mm: remove __GFP_NO_KSWAPD" for now and revisit it with the view to ironing out the balance_pgdat() logic in general. Signed-off-by: Mel Gorman Cc: Zdenek Kabelac Cc: Seth Jennings Cc: Valdis Kletnieks Cc: Jiri Slaby Cc: Rik van Riel Cc: Robert Jennings Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/gfp.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 02c1c9710be0..d0a79678f169 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -31,6 +31,7 @@ struct vm_area_struct; #define ___GFP_THISNODE 0x40000u #define ___GFP_RECLAIMABLE 0x80000u #define ___GFP_NOTRACK 0x200000u +#define ___GFP_NO_KSWAPD 0x400000u #define ___GFP_OTHER_NODE 0x800000u #define ___GFP_WRITE 0x1000000u @@ -85,6 +86,7 @@ struct vm_area_struct; #define __GFP_RECLAIMABLE ((__force gfp_t)___GFP_RECLAIMABLE) /* Page is reclaimable */ #define __GFP_NOTRACK ((__force gfp_t)___GFP_NOTRACK) /* Don't track with kmemcheck */ +#define __GFP_NO_KSWAPD ((__force gfp_t)___GFP_NO_KSWAPD) #define __GFP_OTHER_NODE ((__force gfp_t)___GFP_OTHER_NODE) /* On behalf of other node */ #define __GFP_WRITE ((__force gfp_t)___GFP_WRITE) /* Allocator intends to dirty page */ @@ -114,7 +116,8 @@ struct vm_area_struct; __GFP_MOVABLE) #define GFP_IOFS (__GFP_IO | __GFP_FS) #define GFP_TRANSHUGE (GFP_HIGHUSER_MOVABLE | __GFP_COMP | \ - __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN) + __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN | \ + __GFP_NO_KSWAPD) #ifdef CONFIG_NUMA #define GFP_THISNODE (__GFP_THISNODE | __GFP_NOWARN | __GFP_NORETRY) -- cgit v1.2.3 From f2d9d270c15ae0139b54a7e7466d738327e97e03 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 22 Nov 2012 14:11:39 +0100 Subject: mac80211: support VHT association Determine the VHT channel from the AP's VHT operation IE (if present) and configure the hardware to that channel if it is supported. If channel contexts cause a channel to not be usable, try a smaller bandwidth. Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index f9c5a787d350..8f690e53dd89 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -1212,6 +1212,21 @@ struct ieee80211_vht_cap { struct ieee80211_vht_mcs_info supp_mcs; } __packed; +/** + * enum ieee80211_vht_chanwidth - VHT channel width + * @IEEE80211_VHT_CHANWIDTH_USE_HT: use the HT operation IE to + * determine the channel width (20 or 40 MHz) + * @IEEE80211_VHT_CHANWIDTH_80MHZ: 80 MHz bandwidth + * @IEEE80211_VHT_CHANWIDTH_160MHZ: 160 MHz bandwidth + * @IEEE80211_VHT_CHANWIDTH_80P80MHZ: 80+80 MHz bandwidth + */ +enum ieee80211_vht_chanwidth { + IEEE80211_VHT_CHANWIDTH_USE_HT = 0, + IEEE80211_VHT_CHANWIDTH_80MHZ = 1, + IEEE80211_VHT_CHANWIDTH_160MHZ = 2, + IEEE80211_VHT_CHANWIDTH_80P80MHZ = 3, +}; + /** * struct ieee80211_vht_operation - VHT operation IE * -- cgit v1.2.3 From 77b71b370ed06c75bdebef09be438d5275f70fc1 Mon Sep 17 00:00:00 2001 From: Thomas Abraham Date: Tue, 27 Nov 2012 14:04:32 +0530 Subject: regulator: add device tree support for max8997 Add device tree based discovery support for max8997. Signed-off-by: Thomas Abraham Acked-by: MyungJoo Ham Reviewed-by: Tomasz Figa Signed-off-by: Mark Brown --- include/linux/mfd/max8997-private.h | 1 + include/linux/mfd/max8997.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h index 830152cfae33..6ae21bf47d64 100644 --- a/include/linux/mfd/max8997-private.h +++ b/include/linux/mfd/max8997-private.h @@ -316,6 +316,7 @@ enum max8997_irq { #define MAX8997_NUM_GPIO 12 struct max8997_dev { struct device *dev; + struct max8997_platform_data *pdata; struct i2c_client *i2c; /* 0xcc / PMIC, Battery Control, and FLASH */ struct i2c_client *rtc; /* slave addr 0x0c */ struct i2c_client *haptic; /* slave addr 0x90 */ diff --git a/include/linux/mfd/max8997.h b/include/linux/mfd/max8997.h index 328d8e24b533..1d4a4fe6ac33 100644 --- a/include/linux/mfd/max8997.h +++ b/include/linux/mfd/max8997.h @@ -75,6 +75,7 @@ enum max8998_regulators { struct max8997_regulator_data { int id; struct regulator_init_data *initdata; + struct device_node *reg_node; }; enum max8997_muic_usb_type { -- cgit v1.2.3 From 33234e791de2ac3ea915158e042907748191cabd Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Tue, 27 Nov 2012 10:24:33 +0800 Subject: regulator: core: Allow specific minimal selector for starting linear mapping Some drivers (at least 3 drivers) have such variant of linear mapping that the first few selectors are invalid and the reset are linear mapping. Let's support this case in core. This patch adds linear_min_sel in struct regulator_desc, so we can allow specific minimal selector for starting linear mapping. Then extends regulator_[map|list]_voltage_linear() to support this feature. Note that for selectors less than min_linear_index, we need count them to n_voltages so regulator_list_voltage() won't fail while checking the boundary for selector before calling list_voltage callback. Signed-off-by: Axel Lin Signed-off-by: Mark Brown --- include/linux/regulator/driver.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 7932a3bf21bd..d9ce98a5028b 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -185,6 +185,7 @@ enum regulator_type { * * @min_uV: Voltage given by the lowest selector (if linear mapping) * @uV_step: Voltage increase with each selector (if linear mapping) + * @linear_min_sel: Minimal selector for starting linear mapping * @ramp_delay: Time to settle down after voltage change (unit: uV/us) * @volt_table: Voltage mapping table (if table based mapping) * @@ -207,6 +208,7 @@ struct regulator_desc { unsigned int min_uV; unsigned int uV_step; + unsigned int linear_min_sel; unsigned int ramp_delay; const unsigned int *volt_table; -- cgit v1.2.3 From ec809bd817dfa1905283468e4c813684ed4efe78 Mon Sep 17 00:00:00 2001 From: Krzysztof Mazur Date: Tue, 6 Nov 2012 23:16:57 +0100 Subject: atm: add owner of push() callback to atmvcc The atm is using atmvcc->push(vcc, NULL) callback to notify protocol that vcc will be closed and protocol must detach from it. This callback is usually used by protocol to decrement module usage count by module_put(), but it leaves small window then module is still used after module_put(). Now the owner of push() callback is kept in atmvcc and module_put(atmvcc->owner) is called after the protocol is detached from vcc. Signed-off-by: Krzysztof Mazur Signed-off-by: David Woodhouse Acked-by: Chas Williams --- include/linux/atmdev.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/atmdev.h b/include/linux/atmdev.h index 22ef21c33d0c..72db2af902a8 100644 --- a/include/linux/atmdev.h +++ b/include/linux/atmdev.h @@ -106,6 +106,7 @@ struct atm_vcc { void *dev_data; /* per-device data */ void *proto_data; /* per-protocol data */ struct k_atm_aal_stats *stats; /* pointer to AAL stats group */ + struct module *owner; /* owner of ->push function */ /* SVC part --- may move later ------------------------------------- */ short itf; /* interface number */ struct sockaddr_atmsvc local; -- cgit v1.2.3 From 582b336ec2c0f0076f5650a029fcc9abd4a906f7 Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Tue, 27 Nov 2012 23:28:54 -0200 Subject: sched: add notifier for cross-cpu migrations Originally from Jeremy Fitzhardinge. Acked-by: Ingo Molnar Signed-off-by: Marcelo Tosatti --- include/linux/sched.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 0dd42a02df2e..6eb2ed819e36 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -107,6 +107,14 @@ extern unsigned long this_cpu_load(void); extern void calc_global_load(unsigned long ticks); extern void update_cpu_load_nohz(void); +/* Notifier for when a task gets migrated to a new CPU */ +struct task_migration_notifier { + struct task_struct *task; + int from_cpu; + int to_cpu; +}; +extern void register_task_migration_notifier(struct notifier_block *n); + extern unsigned long get_parent_ip(unsigned long addr); struct seq_file; -- cgit v1.2.3 From e0b306fef90556233797d2e1747bd6a3ae35ea93 Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Tue, 27 Nov 2012 23:28:59 -0200 Subject: time: export time information for KVM pvclock As suggested by John, export time data similarly to how its done by vsyscall support. This allows KVM to retrieve necessary information to implement vsyscall support in KVM guests. Acked-by: John Stultz Signed-off-by: Marcelo Tosatti --- include/linux/pvclock_gtod.h | 9 +++++++++ 1 file changed, 9 insertions(+) create mode 100644 include/linux/pvclock_gtod.h (limited to 'include/linux') diff --git a/include/linux/pvclock_gtod.h b/include/linux/pvclock_gtod.h new file mode 100644 index 000000000000..0ca75825b60d --- /dev/null +++ b/include/linux/pvclock_gtod.h @@ -0,0 +1,9 @@ +#ifndef _PVCLOCK_GTOD_H +#define _PVCLOCK_GTOD_H + +#include + +extern int pvclock_gtod_register_notifier(struct notifier_block *nb); +extern int pvclock_gtod_unregister_notifier(struct notifier_block *nb); + +#endif /* _PVCLOCK_GTOD_H */ -- cgit v1.2.3 From d828199e84447795c6669ff0e6c6d55eb9beeff6 Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Tue, 27 Nov 2012 23:29:01 -0200 Subject: KVM: x86: implement PVCLOCK_TSC_STABLE_BIT pvclock flag KVM added a global variable to guarantee monotonicity in the guest. One of the reasons for that is that the time between 1. ktime_get_ts(×pec); 2. rdtscll(tsc); Is variable. That is, given a host with stable TSC, suppose that two VCPUs read the same time via ktime_get_ts() above. The time required to execute 2. is not the same on those two instances executing in different VCPUS (cache misses, interrupts...). If the TSC value that is used by the host to interpolate when calculating the monotonic time is the same value used to calculate the tsc_timestamp value stored in the pvclock data structure, and a single tuple is visible to all vcpus simultaneously, this problem disappears. See comment on top of pvclock_update_vm_gtod_copy for details. Monotonicity is then guaranteed by synchronicity of the host TSCs and guest TSCs. Set TSC stable pvclock flag in that case, allowing the guest to read clock from userspace. Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 99a47627e046..c94c9985dee0 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -131,6 +131,8 @@ static inline bool is_error_page(struct page *page) #define KVM_REQ_PMU 16 #define KVM_REQ_PMI 17 #define KVM_REQ_WATCHDOG 18 +#define KVM_REQ_MASTERCLOCK_UPDATE 19 +#define KVM_REQ_MCLOCK_INPROGRESS 20 #define KVM_USERSPACE_IRQ_SOURCE_ID 0 #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 @@ -540,6 +542,7 @@ void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); void kvm_flush_remote_tlbs(struct kvm *kvm); void kvm_reload_remote_mmus(struct kvm *kvm); +void kvm_make_mclock_inprogress_request(struct kvm *kvm); long kvm_arch_dev_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg); -- cgit v1.2.3 From 42897d866b120547777ae1fd316680ec53356d9c Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Tue, 27 Nov 2012 23:29:02 -0200 Subject: KVM: x86: add kvm_arch_vcpu_postcreate callback, move TSC initialization TSC initialization will soon make use of online_vcpus. Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index c94c9985dee0..8e5c7b651655 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -596,6 +596,7 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); +int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu); void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); int kvm_arch_hardware_enable(void *garbage); -- cgit v1.2.3 From 972deb4f49b5b6703d9c6117ba0aeda2180d4447 Mon Sep 17 00:00:00 2001 From: Shubhrajyoti D Date: Mon, 26 Nov 2012 15:25:11 +0530 Subject: i2c: omap: Remove the OMAP_I2C_FLAG_RESET_REGS_POSTIDLE flag The OMAP_I2C_FLAG_RESET_REGS_POSTIDLE is not used anymore in the i2c driver. Remove the flag. Signed-off-by: Shubhrajyoti D Reviewed-by: Felipe Balbi Signed-off-by: Wolfram Sang --- include/linux/i2c-omap.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/i2c-omap.h b/include/linux/i2c-omap.h index 1b25c04f82d9..babe0cf6d56b 100644 --- a/include/linux/i2c-omap.h +++ b/include/linux/i2c-omap.h @@ -20,7 +20,6 @@ #define OMAP_I2C_FLAG_NO_FIFO BIT(0) #define OMAP_I2C_FLAG_SIMPLE_CLOCK BIT(1) #define OMAP_I2C_FLAG_16BIT_DATA_REG BIT(2) -#define OMAP_I2C_FLAG_RESET_REGS_POSTIDLE BIT(3) #define OMAP_I2C_FLAG_ALWAYS_ARMXOR_CLK BIT(5) #define OMAP_I2C_FLAG_FORCE_19200_INT_CLK BIT(6) /* how the CPU address bus must be translated for I2C unit access */ -- cgit v1.2.3 From 11652769179296062c74233e168399a87a3f6e8a Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Thu, 13 Sep 2012 17:19:40 +0200 Subject: EDAC: Add memory controller flags The first flag is ->csbased and will be used in common EDAC code later. Signed-off-by: Borislav Petkov --- include/linux/edac.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/edac.h b/include/linux/edac.h index bab9f8473dc1..07bda01bf20a 100644 --- a/include/linux/edac.h +++ b/include/linux/edac.h @@ -667,6 +667,8 @@ struct mem_ctl_info { u32 fake_inject_ue; u16 fake_inject_count; #endif + __u8 csbased : 1, /* csrow-based memory controller */ + __resv : 7; }; #endif -- cgit v1.2.3 From 16a528ee3975c860dc93fbfc718fe9aa25ed92bc Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Thu, 13 Sep 2012 18:53:58 +0200 Subject: EDAC: Fix csrow size reported in sysfs On csrow-based memory controllers, we combine the csrow size from both channels and there's no need to do that again in csrow_size_show which leads to double the size of a csrow. Fix it. Signed-off-by: Borislav Petkov --- include/linux/edac.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/edac.h b/include/linux/edac.h index 07bda01bf20a..1b8c02b36f76 100644 --- a/include/linux/edac.h +++ b/include/linux/edac.h @@ -533,6 +533,7 @@ struct csrow_info { u32 ue_count; /* Uncorrectable Errors for this csrow */ u32 ce_count; /* Correctable Errors for this csrow */ + u32 nr_pages; /* combined pages count of all channels */ struct mem_ctl_info *mci; /* the parent */ -- cgit v1.2.3 From b951b523ea45d5717377ce2216afe98440001660 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 26 Nov 2012 21:11:10 +0000 Subject: mfd: arizona: Allow the CODEC DAPM context to be accessed elsewhere Some other device functions need to integrate with signal sources in the audio portion (primarily for haptics) so allow CODEC to export the DAPM context by pointing to it from the core driver. Signed-off-by: Mark Brown --- include/linux/mfd/arizona/core.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/arizona/core.h b/include/linux/mfd/arizona/core.h index dd231ac0bb1f..a580363a7d29 100644 --- a/include/linux/mfd/arizona/core.h +++ b/include/linux/mfd/arizona/core.h @@ -78,6 +78,8 @@ enum arizona_type { #define ARIZONA_NUM_IRQ 50 +struct snd_soc_dapm_context; + struct arizona { struct regmap *regmap; struct device *dev; @@ -98,6 +100,8 @@ struct arizona { struct mutex clk_lock; int clk32k_ref; + + struct snd_soc_dapm_context *dapm; }; int arizona_clk32k_enable(struct arizona *arizona); -- cgit v1.2.3 From 9dd555e2f4de1af1bb0f75cc84ed0708fcdb5987 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 26 Nov 2012 21:17:21 +0000 Subject: Input - arizona-haptics: Add driver haptics module on Arizona CODECs The Arizona CODECs contain a haptics module providing vibration feedback support. Implement basic support for this, providing simple start/stop and signal magnitude control. Since the output path for haptics is routed through the CODEC audio routing it is modelled as a signal generator within ASoC, the haptics driver calls DAPM to start and stop the output drivers. An appropriate output path must be configured via ALSA to connect the haptics source to the correct output. Signed-off-by: Mark Brown --- include/linux/mfd/arizona/pdata.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h index 7ab442905a57..8b1d1daaae16 100644 --- a/include/linux/mfd/arizona/pdata.h +++ b/include/linux/mfd/arizona/pdata.h @@ -62,6 +62,9 @@ #define ARIZONA_MAX_OUTPUT 6 +#define ARIZONA_HAP_ACT_ERM 0 +#define ARIZONA_HAP_ACT_LRA 2 + #define ARIZONA_MAX_PDM_SPK 2 struct regulator_init_data; @@ -114,6 +117,9 @@ struct arizona_pdata { /** PDM speaker format */ unsigned int spk_fmt[ARIZONA_MAX_PDM_SPK]; + + /** Haptic actuator type */ + unsigned int hap_act; }; #endif -- cgit v1.2.3 From 4b05a1c74d1cfae37cf6ff293ee928350f031418 Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Tue, 27 Nov 2012 22:59:52 -0500 Subject: percpu-rwsem: use synchronize_sched_expedited Use synchronize_sched_expedited() instead of synchronize_sched() to improve mount speed. This patch improves mount time from 0.500s to 0.013s for Jeff's test-case. Signed-off-by: Mikulas Patocka Reported-and-tested-by: Jeff Chua Signed-off-by: Linus Torvalds --- include/linux/percpu-rwsem.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/percpu-rwsem.h b/include/linux/percpu-rwsem.h index 250a4acddb2b..bd1e86071e57 100644 --- a/include/linux/percpu-rwsem.h +++ b/include/linux/percpu-rwsem.h @@ -13,7 +13,7 @@ struct percpu_rw_semaphore { }; #define light_mb() barrier() -#define heavy_mb() synchronize_sched() +#define heavy_mb() synchronize_sched_expedited() static inline void percpu_down_read(struct percpu_rw_semaphore *p) { @@ -51,7 +51,7 @@ static inline void percpu_down_write(struct percpu_rw_semaphore *p) { mutex_lock(&p->mtx); p->locked = true; - synchronize_sched(); /* make sure that all readers exit the rcu_read_lock_sched region */ + synchronize_sched_expedited(); /* make sure that all readers exit the rcu_read_lock_sched region */ while (__percpu_count(p->counters)) msleep(1); heavy_mb(); /* C, between read of p->counter and write to data, paired with B */ -- cgit v1.2.3 From e80d0a1ae8bb8fee0edd37427836f108b30f596b Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Wed, 21 Nov 2012 16:26:44 +0100 Subject: cputime: Rename thread_group_times to thread_group_cputime_adjusted We have thread_group_cputime() and thread_group_times(). The naming doesn't provide enough information about the difference between these two APIs. To lower the confusion, rename thread_group_times() to thread_group_cputime_adjusted(). This name better suggests that it's a version of thread_group_cputime() that does some stabilization on the raw cputime values. ie here: scale on top of CFS runtime stats and bound lower value for monotonicity. Signed-off-by: Frederic Weisbecker Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Steven Rostedt Cc: Paul Gortmaker --- include/linux/sched.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index e1581a029e3d..e75cab5820ab 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1751,8 +1751,8 @@ static inline void put_task_struct(struct task_struct *t) __put_task_struct(t); } -extern void task_times(struct task_struct *p, cputime_t *ut, cputime_t *st); -extern void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t *st); +extern void task_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st); +extern void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st); /* * Per process flags -- cgit v1.2.3 From d37f761dbd276790f70dcf73a287fde2c3464482 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Thu, 22 Nov 2012 00:58:35 +0100 Subject: cputime: Consolidate cputime adjustment code task_cputime_adjusted() and thread_group_cputime_adjusted() essentially share the same code. They just don't use the same source: * The first function uses the cputime in the task struct and the previous adjusted snapshot that ensures monotonicity. * The second adds the cputime of all tasks in the group and the previous adjusted snapshot of the whole group from the signal structure. Just consolidate the common code that does the adjustment. These functions just need to fetch the values from the appropriate source. Signed-off-by: Frederic Weisbecker Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Steven Rostedt Cc: Paul Gortmaker --- include/linux/sched.h | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index e75cab5820ab..5dafac366811 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -433,14 +433,29 @@ struct cpu_itimer { u32 incr_error; }; +/** + * struct cputime - snaphsot of system and user cputime + * @utime: time spent in user mode + * @stime: time spent in system mode + * + * Gathers a generic snapshot of user and system time. + */ +struct cputime { + cputime_t utime; + cputime_t stime; +}; + /** * struct task_cputime - collected CPU time counts * @utime: time spent in user mode, in &cputime_t units * @stime: time spent in kernel mode, in &cputime_t units * @sum_exec_runtime: total time spent on the CPU, in nanoseconds * - * This structure groups together three kinds of CPU time that are - * tracked for threads and thread groups. Most things considering + * This is an extension of struct cputime that includes the total runtime + * spent by the task from the scheduler point of view. + * + * As a result, this structure groups together three kinds of CPU time + * that are tracked for threads and thread groups. Most things considering * CPU time want to group these counts together and treat all three * of them in parallel. */ @@ -581,7 +596,7 @@ struct signal_struct { cputime_t gtime; cputime_t cgtime; #ifndef CONFIG_VIRT_CPU_ACCOUNTING - cputime_t prev_utime, prev_stime; + struct cputime prev_cputime; #endif unsigned long nvcsw, nivcsw, cnvcsw, cnivcsw; unsigned long min_flt, maj_flt, cmin_flt, cmaj_flt; @@ -1340,7 +1355,7 @@ struct task_struct { cputime_t utime, stime, utimescaled, stimescaled; cputime_t gtime; #ifndef CONFIG_VIRT_CPU_ACCOUNTING - cputime_t prev_utime, prev_stime; + struct cputime prev_cputime; #endif unsigned long nvcsw, nivcsw; /* context switch counts */ struct timespec start_time; /* monotonic time */ -- cgit v1.2.3 From 73ee29460e5d0adbb46e4962df69ae2465746612 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 27 Nov 2012 18:48:33 +0000 Subject: regulator: arizona-ldo1: Support 1.8V mode Some Arizona device support a 1.8V output mode. Enable this in the driver. Signed-off-by: Mark Brown --- include/linux/mfd/arizona/registers.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/arizona/registers.h b/include/linux/mfd/arizona/registers.h index 7671a287dfee..ba26e99c388d 100644 --- a/include/linux/mfd/arizona/registers.h +++ b/include/linux/mfd/arizona/registers.h @@ -76,6 +76,7 @@ #define ARIZONA_RATE_ESTIMATOR_3 0x154 #define ARIZONA_RATE_ESTIMATOR_4 0x155 #define ARIZONA_RATE_ESTIMATOR_5 0x156 +#define ARIZONA_DYNAMIC_FREQUENCY_SCALING_1 0x161 #define ARIZONA_FLL1_CONTROL_1 0x171 #define ARIZONA_FLL1_CONTROL_2 0x172 #define ARIZONA_FLL1_CONTROL_3 0x173 @@ -110,6 +111,7 @@ #define ARIZONA_FLL2_GPIO_CLOCK 0x1AA #define ARIZONA_MIC_CHARGE_PUMP_1 0x200 #define ARIZONA_LDO1_CONTROL_1 0x210 +#define ARIZONA_LDO1_CONTROL_2 0x212 #define ARIZONA_LDO2_CONTROL_1 0x213 #define ARIZONA_MIC_BIAS_CTRL_1 0x218 #define ARIZONA_MIC_BIAS_CTRL_2 0x219 @@ -1573,6 +1575,13 @@ #define ARIZONA_SAMPLE_RATE_DETECT_D_SHIFT 0 /* SAMPLE_RATE_DETECT_D - [4:0] */ #define ARIZONA_SAMPLE_RATE_DETECT_D_WIDTH 5 /* SAMPLE_RATE_DETECT_D - [4:0] */ +/* + * R353 (0x161) - Dynamic Frequency Scaling 1 + */ +#define ARIZONA_SUBSYS_MAX_FREQ 0x0001 /* SUBSYS_MAX_FREQ */ +#define ARIZONA_SUBSYS_MAX_FREQ_SHIFT 0 /* SUBSYS_MAX_FREQ */ +#define ARIZONA_SUBSYS_MAX_FREQ_WIDTH 1 /* SUBSYS_MAX_FREQ */ + /* * R369 (0x171) - FLL1 Control 1 */ @@ -1888,6 +1897,13 @@ #define ARIZONA_LDO1_ENA_SHIFT 0 /* LDO1_ENA */ #define ARIZONA_LDO1_ENA_WIDTH 1 /* LDO1_ENA */ +/* + * R530 (0x212) - LDO1 Control 2 + */ +#define ARIZONA_LDO1_HI_PWR 0x0001 /* LDO1_HI_PWR */ +#define ARIZONA_LDO1_HI_PWR_SHIFT 0 /* LDO1_HI_PWR */ +#define ARIZONA_LDO1_HI_PWR_WIDTH 1 /* LDO1_HI_PWR */ + /* * R531 (0x213) - LDO2 Control 1 */ -- cgit v1.2.3 From 1c9a9f59149e247e264db1fbf9f8ea3d5066eb64 Mon Sep 17 00:00:00 2001 From: Bill Pemberton Date: Mon, 19 Nov 2012 13:19:21 -0500 Subject: kobject: remove CONFIG_HOTPLUG ifdefs Remove conditional code based on CONFIG_HOTPLUG being false. It's always on now in preparation of it going away as an option. Signed-off-by: Bill Pemberton Signed-off-by: Greg Kroah-Hartman --- include/linux/kobject.h | 18 ------------------ 1 file changed, 18 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kobject.h b/include/linux/kobject.h index 1e57449395b1..939b11268c86 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -203,7 +203,6 @@ extern struct kobject *power_kobj; /* The global /sys/firmware/ kobject for people to chain off of */ extern struct kobject *firmware_kobj; -#if defined(CONFIG_HOTPLUG) int kobject_uevent(struct kobject *kobj, enum kobject_action action); int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, char *envp[]); @@ -213,22 +212,5 @@ int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...); int kobject_action_type(const char *buf, size_t count, enum kobject_action *type); -#else -static inline int kobject_uevent(struct kobject *kobj, - enum kobject_action action) -{ return 0; } -static inline int kobject_uevent_env(struct kobject *kobj, - enum kobject_action action, - char *envp[]) -{ return 0; } - -static inline __printf(2, 3) -int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...) -{ return -ENOMEM; } - -static inline int kobject_action_type(const char *buf, size_t count, - enum kobject_action *type) -{ return -EINVAL; } -#endif #endif /* _KOBJECT_H_ */ -- cgit v1.2.3 From 1974a042dd15f1f007a3a1a2dd7a23ca0e42c01d Mon Sep 17 00:00:00 2001 From: Padmavathi Venna Date: Wed, 28 Nov 2012 16:17:48 +0530 Subject: ASoC: Samsung: Get I2S src_clk from clock alias id. As the I2S src clks are registered with clkdev using generic connection id, driver can get the clk name using generic id. So the variable representing the array of rclk src clks is deleted. Signed-off-by: Padmavathi Venna Signed-off-by: Mark Brown --- include/linux/platform_data/asoc-s3c.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/asoc-s3c.h b/include/linux/platform_data/asoc-s3c.h index aa9875f77c40..88272591a895 100644 --- a/include/linux/platform_data/asoc-s3c.h +++ b/include/linux/platform_data/asoc-s3c.h @@ -38,12 +38,6 @@ struct samsung_i2s { #define QUIRK_NEED_RSTCLR (1 << 3) /* Quirks of the I2S controller */ u32 quirks; - - /* - * Array of clock names that can be used to generate I2S signals. - * Also corresponds to clocks of I2SMOD[10] - */ - const char **src_clk; dma_addr_t idma_addr; }; -- cgit v1.2.3 From f791be492f76dea7b0641ed227a60eeb2fa7e255 Mon Sep 17 00:00:00 2001 From: Bill Pemberton Date: Mon, 19 Nov 2012 13:23:04 -0500 Subject: mfd: remove use of __devinit CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton Cc: Srinidhi Kasagar Cc: Peter Tyser Cc: Daniel Walker Cc: Bryan Huntsman Acked-by: David Brown Acked-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- include/linux/mfd/88pm80x.h | 2 +- include/linux/mfd/abx500/ab8500.h | 2 +- include/linux/mfd/pm8xxx/irq.h | 4 ++-- 3 files changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/88pm80x.h b/include/linux/mfd/88pm80x.h index a0ca0dca1244..478672ed0c3d 100644 --- a/include/linux/mfd/88pm80x.h +++ b/include/linux/mfd/88pm80x.h @@ -364,6 +364,6 @@ static inline int pm80x_dev_resume(struct device *dev) #endif extern int pm80x_init(struct i2c_client *client, - const struct i2c_device_id *id) __devinit; + const struct i2c_device_id *id); extern int pm80x_deinit(struct i2c_client *client); #endif /* __LINUX_MFD_88PM80X_H */ diff --git a/include/linux/mfd/abx500/ab8500.h b/include/linux/mfd/abx500/ab8500.h index 1491044efa10..83f0bdc530b7 100644 --- a/include/linux/mfd/abx500/ab8500.h +++ b/include/linux/mfd/abx500/ab8500.h @@ -291,7 +291,7 @@ struct ab8500_platform_data { struct ab8500_codec_platform_data *codec; }; -extern int __devinit ab8500_init(struct ab8500 *ab8500, +extern int ab8500_init(struct ab8500 *ab8500, enum ab8500_version version); extern int __devexit ab8500_exit(struct ab8500 *ab8500); diff --git a/include/linux/mfd/pm8xxx/irq.h b/include/linux/mfd/pm8xxx/irq.h index 4b21769f4483..ddaa7f5e9ed9 100644 --- a/include/linux/mfd/pm8xxx/irq.h +++ b/include/linux/mfd/pm8xxx/irq.h @@ -37,7 +37,7 @@ struct pm_irq_chip; #ifdef CONFIG_MFD_PM8XXX_IRQ int pm8xxx_get_irq_stat(struct pm_irq_chip *chip, int irq); -struct pm_irq_chip * __devinit pm8xxx_irq_init(struct device *dev, +struct pm_irq_chip *pm8xxx_irq_init(struct device *dev, const struct pm8xxx_irq_platform_data *pdata); int __devexit pm8xxx_irq_exit(struct pm_irq_chip *chip); #else @@ -45,7 +45,7 @@ static inline int pm8xxx_get_irq_stat(struct pm_irq_chip *chip, int irq) { return -ENXIO; } -static inline struct pm_irq_chip * __devinit pm8xxx_irq_init( +static inline struct pm_irq_chip *pm8xxx_irq_init( const struct device *dev, const struct pm8xxx_irq_platform_data *pdata) { -- cgit v1.2.3 From 4740f73fe5388ab5d22d552d2a0dacc62418a70c Mon Sep 17 00:00:00 2001 From: Bill Pemberton Date: Mon, 19 Nov 2012 13:26:01 -0500 Subject: mfd: remove use of __devexit CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton Cc: Srinidhi Kasagar Cc: Peter Tyser Cc: Daniel Walker Cc: Bryan Huntsman Acked-by: David Brown Acked-by: Linus Walleij Acked-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- include/linux/mfd/abx500/ab8500.h | 2 +- include/linux/mfd/pm8xxx/irq.h | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500/ab8500.h b/include/linux/mfd/abx500/ab8500.h index 83f0bdc530b7..1cb5698b4d76 100644 --- a/include/linux/mfd/abx500/ab8500.h +++ b/include/linux/mfd/abx500/ab8500.h @@ -293,7 +293,7 @@ struct ab8500_platform_data { extern int ab8500_init(struct ab8500 *ab8500, enum ab8500_version version); -extern int __devexit ab8500_exit(struct ab8500 *ab8500); +extern int ab8500_exit(struct ab8500 *ab8500); extern int ab8500_suspend(struct ab8500 *ab8500); diff --git a/include/linux/mfd/pm8xxx/irq.h b/include/linux/mfd/pm8xxx/irq.h index ddaa7f5e9ed9..f83d6b43ecbb 100644 --- a/include/linux/mfd/pm8xxx/irq.h +++ b/include/linux/mfd/pm8xxx/irq.h @@ -39,7 +39,7 @@ struct pm_irq_chip; int pm8xxx_get_irq_stat(struct pm_irq_chip *chip, int irq); struct pm_irq_chip *pm8xxx_irq_init(struct device *dev, const struct pm8xxx_irq_platform_data *pdata); -int __devexit pm8xxx_irq_exit(struct pm_irq_chip *chip); +int pm8xxx_irq_exit(struct pm_irq_chip *chip); #else static inline int pm8xxx_get_irq_stat(struct pm_irq_chip *chip, int irq) { @@ -51,7 +51,7 @@ static inline struct pm_irq_chip *pm8xxx_irq_init( { return ERR_PTR(-ENXIO); } -static inline int __devexit pm8xxx_irq_exit(struct pm_irq_chip *chip) +static inline int pm8xxx_irq_exit(struct pm_irq_chip *chip) { return -ENXIO; } -- cgit v1.2.3 From b40b97ae736cad3084b13d2969b10c474572de89 Mon Sep 17 00:00:00 2001 From: Bill Pemberton Date: Wed, 21 Nov 2012 15:34:57 -0500 Subject: PCI: Remove CONFIG_HOTPLUG ifdefs Remove conditional code based on CONFIG_HOTPLUG being false. It's always on now in preparation of it going away as an option. Signed-off-by: Bill Pemberton Acked-by: Bjorn Helgaas Signed-off-by: Greg Kroah-Hartman --- include/linux/pci.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index ee2179546c63..699e9a920eca 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -941,10 +941,8 @@ void set_pcie_hotplug_bridge(struct pci_dev *pdev); /* Functions for PCI Hotplug drivers to use */ int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap); -#ifdef CONFIG_HOTPLUG unsigned int pci_rescan_bus_bridge_resize(struct pci_dev *bridge); unsigned int pci_rescan_bus(struct pci_bus *bus); -#endif /* Vital product data routines */ ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf); -- cgit v1.2.3 From 15856ad50bf5ea02a5ee22399c036d49e7e1124d Mon Sep 17 00:00:00 2001 From: Bill Pemberton Date: Wed, 21 Nov 2012 15:35:00 -0500 Subject: PCI: Remove __dev* markings CONFIG_HOTPLUG is going away as an option so __devexit_p, __devint, __devinitdata, __devinitconst, and _devexit are no longer needed. Signed-off-by: Bill Pemberton Acked-by: Bjorn Helgaas Signed-off-by: Greg Kroah-Hartman --- include/linux/pci.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 699e9a920eca..d03d2463efac 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -588,7 +588,7 @@ struct pci_driver { * in a generic manner. */ #define DEFINE_PCI_DEVICE_TABLE(_table) \ - const struct pci_device_id _table[] __devinitconst + const struct pci_device_id _table[] /** * PCI_DEVICE - macro used to describe a specific pci device @@ -686,7 +686,7 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus, int pci_bus_insert_busn_res(struct pci_bus *b, int bus, int busmax); int pci_bus_update_busn_res_end(struct pci_bus *b, int busmax); void pci_bus_release_busn_res(struct pci_bus *b); -struct pci_bus * __devinit pci_scan_root_bus(struct device *parent, int bus, +struct pci_bus *pci_scan_root_bus(struct device *parent, int bus, struct pci_ops *ops, void *sysdata, struct list_head *resources); struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, @@ -1578,7 +1578,7 @@ extern int pci_pci_problems; extern unsigned long pci_cardbus_io_size; extern unsigned long pci_cardbus_mem_size; -extern u8 __devinitdata pci_dfl_cache_line_size; +extern u8 pci_dfl_cache_line_size; extern u8 pci_cache_line_size; extern unsigned long pci_hotplug_io_size; -- cgit v1.2.3 From c4144670fd9b34d6eae22c9f83751745898e8243 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 2 Oct 2012 16:34:38 -0400 Subject: kill daemonize() Signed-off-by: Al Viro --- include/linux/fdtable.h | 1 - include/linux/fs_struct.h | 1 - include/linux/sched.h | 1 - 3 files changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fdtable.h b/include/linux/fdtable.h index 45052aa814c8..fb7dacae0522 100644 --- a/include/linux/fdtable.h +++ b/include/linux/fdtable.h @@ -95,7 +95,6 @@ struct task_struct; struct files_struct *get_files_struct(struct task_struct *); void put_files_struct(struct files_struct *fs); void reset_files_struct(struct files_struct *); -void daemonize_descriptors(void); int unshare_files(struct files_struct **); struct files_struct *dup_fd(struct files_struct *, int *); void do_close_on_exec(struct files_struct *); diff --git a/include/linux/fs_struct.h b/include/linux/fs_struct.h index 003dc0fd7347..d0ae3a84bcfb 100644 --- a/include/linux/fs_struct.h +++ b/include/linux/fs_struct.h @@ -21,7 +21,6 @@ extern void set_fs_root(struct fs_struct *, struct path *); extern void set_fs_pwd(struct fs_struct *, struct path *); extern struct fs_struct *copy_fs_struct(struct fs_struct *); extern void free_fs_struct(struct fs_struct *); -extern void daemonize_fs_struct(void); extern int unshare_fs_struct(void); static inline void get_fs_root(struct fs_struct *fs, struct path *root) diff --git a/include/linux/sched.h b/include/linux/sched.h index 0dd42a02df2e..a0166481eb20 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2283,7 +2283,6 @@ extern void flush_itimer_signals(void); extern void do_group_exit(int); -extern void daemonize(const char *, ...); extern int allow_signal(int); extern int disallow_signal(int); -- cgit v1.2.3 From 6b94631f9e8c45a46056cbc6a7a50ecebea4f8da Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 20 Oct 2012 13:32:30 -0400 Subject: consolidate sys_execve() prototype Signed-off-by: Al Viro --- include/linux/syscalls.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 727f0cd73921..2779009ceaa3 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -837,6 +837,9 @@ int kernel_execve(const char *filename, const char *const argv[], const char *co current_pt_regs()) #endif +asmlinkage long sys_execve(const char __user *filename, + const char __user *const __user *argv, + const char __user *const __user *envp); asmlinkage long sys_perf_event_open( struct perf_event_attr __user *attr_uptr, -- cgit v1.2.3 From d03d26e58fde2ec99478e26aab47b55755189b08 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 20 Oct 2012 21:46:25 -0400 Subject: make compat_do_execve() static, lose pt_regs argument Signed-off-by: Al Viro --- include/linux/compat.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/compat.h b/include/linux/compat.h index d2db71077d93..784ebfe63c48 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -284,8 +284,6 @@ asmlinkage ssize_t compat_sys_pwritev(unsigned long fd, const struct compat_iovec __user *vec, unsigned long vlen, u32 pos_low, u32 pos_high); -int compat_do_execve(const char *filename, const compat_uptr_t __user *argv, - const compat_uptr_t __user *envp, struct pt_regs *regs); asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv, const compat_uptr_t __user *envp); -- cgit v1.2.3 From da3d4c5fa56236dd924d77ffc4f982356816b93b Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 20 Oct 2012 21:49:33 -0400 Subject: get rid of pt_regs argument of do_execve() Signed-off-by: Al Viro --- include/linux/sched.h | 2 +- include/linux/syscalls.h | 3 +-- 2 files changed, 2 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index a0166481eb20..c57249782e48 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2288,7 +2288,7 @@ extern int disallow_signal(int); extern int do_execve(const char *, const char __user * const __user *, - const char __user * const __user *, struct pt_regs *); + const char __user * const __user *); extern long do_fork(unsigned long, unsigned long, struct pt_regs *, unsigned long, int __user *, int __user *); struct task_struct *fork_idle(int); #ifdef CONFIG_GENERIC_KERNEL_THREAD diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 2779009ceaa3..526deb333b91 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -833,8 +833,7 @@ int kernel_execve(const char *filename, const char *const argv[], const char *co #define kernel_execve(filename, argv, envp) \ do_execve(filename, \ (const char __user *const __user *)argv, \ - (const char __user *const __user *)envp, \ - current_pt_regs()) + (const char __user *const __user *)envp) #endif asmlinkage long sys_execve(const char __user *filename, -- cgit v1.2.3 From 3c456bfc4ba66e9cda210da7bc4fb0ba9fcc6972 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 20 Oct 2012 21:53:31 -0400 Subject: get rid of pt_regs argument of search_binary_handler() Signed-off-by: Al Viro --- include/linux/binfmts.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h index cfcc6bfcaec0..1f6ce133b4c1 100644 --- a/include/linux/binfmts.h +++ b/include/linux/binfmts.h @@ -95,7 +95,7 @@ extern void unregister_binfmt(struct linux_binfmt *); extern int prepare_binprm(struct linux_binprm *); extern int __must_check remove_arg_zero(struct linux_binprm *); -extern int search_binary_handler(struct linux_binprm *, struct pt_regs *); +extern int search_binary_handler(struct linux_binprm *); extern int flush_old_exec(struct linux_binprm * bprm); extern void setup_new_exec(struct linux_binprm * bprm); extern void would_dump(struct linux_binprm *, struct file *); -- cgit v1.2.3 From 71613c3b871c5a9f27cc48f124251bcd3aa23be1 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 20 Oct 2012 22:00:48 -0400 Subject: get rid of pt_regs argument of ->load_binary() Signed-off-by: Al Viro --- include/linux/binfmts.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h index 1f6ce133b4c1..2630c9b41a86 100644 --- a/include/linux/binfmts.h +++ b/include/linux/binfmts.h @@ -72,7 +72,7 @@ struct coredump_params { struct linux_binfmt { struct list_head lh; struct module *module; - int (*load_binary)(struct linux_binprm *, struct pt_regs * regs); + int (*load_binary)(struct linux_binprm *); int (*load_shlib)(struct file *); int (*core_dump)(struct coredump_params *cprm); unsigned long min_coredump; /* minimal dump size */ -- cgit v1.2.3 From 24465a40ba452bd81fdc9eecb2d75bb903aafdf6 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 28 Nov 2012 23:04:26 -0500 Subject: take sys_fork/sys_vfork/sys_clone prototypes to linux/syscalls.h now it can be done... Signed-off-by: Al Viro --- include/linux/syscalls.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 526deb333b91..91835e7f364d 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -836,6 +836,16 @@ int kernel_execve(const char *filename, const char *const argv[], const char *co (const char __user *const __user *)envp) #endif +asmlinkage long sys_fork(void); +asmlinkage long sys_vfork(void); +#ifdef CONFIG_CLONE_BACKWARDS +asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, int, + int __user *); +#else +asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, + int __user *, int); +#endif + asmlinkage long sys_execve(const char __user *filename, const char __user *const __user *argv, const char __user *const __user *envp); -- cgit v1.2.3 From afa86fc426ff7e7f5477f15da9c405d08d5cf790 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 22 Oct 2012 22:51:14 -0400 Subject: flagday: don't pass regs to copy_thread() Signed-off-by: Al Viro --- include/linux/sched.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index c57249782e48..78a2ae3470df 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2271,7 +2271,7 @@ extern void mm_release(struct task_struct *, struct mm_struct *); extern struct mm_struct *dup_mm(struct task_struct *tsk); extern int copy_thread(unsigned long, unsigned long, unsigned long, - struct task_struct *, struct pt_regs *); + struct task_struct *); extern void flush_thread(void); extern void exit_thread(void); -- cgit v1.2.3 From e80d6661c3a5caa0cebec0853c6cb0db090fb506 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 22 Oct 2012 23:10:08 -0400 Subject: flagday: kill pt_regs argument of do_fork() Signed-off-by: Al Viro --- include/linux/sched.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 78a2ae3470df..1162258bcaf0 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2289,7 +2289,7 @@ extern int disallow_signal(int); extern int do_execve(const char *, const char __user * const __user *, const char __user * const __user *); -extern long do_fork(unsigned long, unsigned long, struct pt_regs *, unsigned long, int __user *, int __user *); +extern long do_fork(unsigned long, unsigned long, unsigned long, int __user *, int __user *); struct task_struct *fork_idle(int); #ifdef CONFIG_GENERIC_KERNEL_THREAD extern pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags); -- cgit v1.2.3 From 4f4202fe5ae9a43e59303f20d700571f695d7b1b Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 5 Nov 2012 12:59:15 -0500 Subject: unify default ptrace_signal_deliver Signed-off-by: Al Viro --- include/linux/ptrace.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index e0ff4689d35a..7aefbae2452e 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -329,6 +329,10 @@ static inline void user_single_step_siginfo(struct task_struct *tsk, #define current_pt_regs() task_pt_regs(current) #endif +#ifndef ptrace_signal_deliver +#define ptrace_signal_deliver(regs, cookie) do { } while (0) +#endif + extern int task_current_syscall(struct task_struct *target, long *callno, unsigned long args[6], unsigned int maxargs, unsigned long *sp, unsigned long *pc); -- cgit v1.2.3 From 22062a96300dabfef93368a28c34bdf35c9b8308 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 5 Nov 2012 13:00:27 -0500 Subject: new helper: signal_pt_regs() Always equal to task_pt_regs(current); defined only when we are in signal delivery. It may be different from current_pt_regs() - e.g. architectures like m68k may have pt_regs location on exception different from that on a syscall and signals (just as ptrace handling) may happen on exceptions as well as on syscalls. When they are equal, it's often better to have signal_pt_regs defined (in asm/ptrace.h) as current_pt_regs - that tends to be optimized better than default would be. However, optimisation is the only reason why we might want an arch-specific definition; if current_pt_regs() and task_pt_regs(current) have different values, the latter one is right. Signed-off-by: Al Viro --- include/linux/ptrace.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index 7aefbae2452e..b8e6dcec78ae 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -333,6 +333,15 @@ static inline void user_single_step_siginfo(struct task_struct *tsk, #define ptrace_signal_deliver(regs, cookie) do { } while (0) #endif +/* + * unlike current_pt_regs(), this one is equal to task_pt_regs(current) + * on *all* architectures; the only reason to have a per-arch definition + * is optimisation. + */ +#ifndef signal_pt_regs +#define signal_pt_regs() task_pt_regs(current) +#endif + extern int task_current_syscall(struct task_struct *target, long *callno, unsigned long args[6], unsigned int maxargs, unsigned long *sp, unsigned long *pc); -- cgit v1.2.3 From b7f9591c44505ee16ed4561cfeb3642798bdd132 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 5 Nov 2012 13:06:22 -0500 Subject: get rid of ptrace_signal_deliver() arguments the first one is equal to signal_pt_regs(), the second is never used (and always NULL, while we are at it). Signed-off-by: Al Viro --- include/linux/ptrace.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index b8e6dcec78ae..a89ff04bddd9 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -330,7 +330,7 @@ static inline void user_single_step_siginfo(struct task_struct *tsk, #endif #ifndef ptrace_signal_deliver -#define ptrace_signal_deliver(regs, cookie) do { } while (0) +#define ptrace_signal_deliver() ((void)0) #endif /* -- cgit v1.2.3 From 541880d9a2c7871f6370071d55aa6662d329c51e Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 5 Nov 2012 13:11:26 -0500 Subject: do_coredump(): get rid of pt_regs argument Signed-off-by: Al Viro --- include/linux/coredump.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/coredump.h b/include/linux/coredump.h index 1d7399314a89..a98f1ca60407 100644 --- a/include/linux/coredump.h +++ b/include/linux/coredump.h @@ -13,9 +13,9 @@ extern int dump_write(struct file *file, const void *addr, int nr); extern int dump_seek(struct file *file, loff_t off); #ifdef CONFIG_COREDUMP -extern void do_coredump(siginfo_t *siginfo, struct pt_regs *regs); +extern void do_coredump(siginfo_t *siginfo); #else -static inline void do_coredump(siginfo_t *siginfo, struct pt_regs *regs) {} +static inline void do_coredump(siginfo_t *siginfo) {} #endif #endif /* _LINUX_COREDUMP_H */ -- cgit v1.2.3 From 4b9347dcbe3b426d19bda99b2061a2d1fe5a2dce Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Mon, 15 Oct 2012 16:03:51 +0200 Subject: common: DMA-mapping: add DMA_ATTR_FORCE_CONTIGUOUS attribute This patch adds DMA_ATTR_FORCE_CONTIGUOUS attribute to the DMA-mapping subsystem. By default DMA-mapping subsystem is allowed to assemble the buffer allocated by dma_alloc_attrs() function from individual pages if it can be mapped as contiguous chunk into device dma address space. By specifing this attribute the allocated buffer is forced to be contiguous also in physical memory. Signed-off-by: Marek Szyprowski --- include/linux/dma-attrs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/dma-attrs.h b/include/linux/dma-attrs.h index f83f793223ff..c8e1831d7572 100644 --- a/include/linux/dma-attrs.h +++ b/include/linux/dma-attrs.h @@ -17,6 +17,7 @@ enum dma_attr { DMA_ATTR_NON_CONSISTENT, DMA_ATTR_NO_KERNEL_MAPPING, DMA_ATTR_SKIP_CPU_SYNC, + DMA_ATTR_FORCE_CONTIGUOUS, DMA_ATTR_MAX, }; -- cgit v1.2.3 From b8fbdc42c5c5df8ab1f358fe90e3a8a1bdc9ae48 Mon Sep 17 00:00:00 2001 From: Steffen Trumtrar Date: Thu, 22 Nov 2012 12:16:43 +0100 Subject: of: add 'const' for of_parse_phandle parameter *np The existing function does not change the passed device_node pointer. It is only handed to of_get_property which itself takes a const struct device_node. of_parse_phandle() can therefore take a const pointer as well. Signed-off-by: Steffen Trumtrar [grant.likely: drop extraneous whitespace change] Signed-off-by: Grant Likely --- include/linux/of.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index 13e0aacb4d9f..7337dc109c89 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -270,7 +270,7 @@ extern int of_n_size_cells(struct device_node *np); extern const struct of_device_id *of_match_node( const struct of_device_id *matches, const struct device_node *node); extern int of_modalias_node(struct device_node *node, char *modalias, int len); -extern struct device_node *of_parse_phandle(struct device_node *np, +extern struct device_node *of_parse_phandle(const struct device_node *np, const char *phandle_name, int index); extern int of_parse_phandle_with_args(struct device_node *np, @@ -438,7 +438,7 @@ static inline int of_property_match_string(struct device_node *np, return -ENOSYS; } -static inline struct device_node *of_parse_phandle(struct device_node *np, +static inline struct device_node *of_parse_phandle(const struct device_node *np, const char *phandle_name, int index) { -- cgit v1.2.3 From bb728820fe7c42fdb838ab2745fb5fe6b18b5ffa Mon Sep 17 00:00:00 2001 From: Rami Rosen Date: Wed, 28 Nov 2012 21:55:25 +0000 Subject: core: make GRO methods static. This patch changes three methods to be static and removes their EXPORT_SYMBOLs in core/dev.c and their external declaration in netdevice.h. The methods, dev_gro_receive(), napi_frags_finish() and napi_skb_finish(), which are in the GRO rx path, are not used outside core/dev.c. Signed-off-by: Rami Rosen Signed-off-by: David S. Miller --- include/linux/netdevice.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index e9929abeb932..18c5dc98f6dc 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2153,16 +2153,10 @@ extern void dev_kfree_skb_any(struct sk_buff *skb); extern int netif_rx(struct sk_buff *skb); extern int netif_rx_ni(struct sk_buff *skb); extern int netif_receive_skb(struct sk_buff *skb); -extern gro_result_t dev_gro_receive(struct napi_struct *napi, - struct sk_buff *skb); -extern gro_result_t napi_skb_finish(gro_result_t ret, struct sk_buff *skb); extern gro_result_t napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb); extern void napi_gro_flush(struct napi_struct *napi, bool flush_old); extern struct sk_buff * napi_get_frags(struct napi_struct *napi); -extern gro_result_t napi_frags_finish(struct napi_struct *napi, - struct sk_buff *skb, - gro_result_t ret); extern gro_result_t napi_gro_frags(struct napi_struct *napi); static inline void napi_free_frags(struct napi_struct *napi) -- cgit v1.2.3 From 1e8b33328a5407b447ff80953655a47014a6dcb9 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 29 Nov 2012 10:49:50 -0800 Subject: blockdev: remove bd_block_size_semaphore again This reverts the block-device direct access code to the previous unlocked code, now that fs/buffer.c no longer needs external locking. With this, fs/block_dev.c is back to the original version, apart from a whitespace cleanup that I didn't want to revert. Signed-off-by: Linus Torvalds --- include/linux/fs.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index b33cfc97b9ca..44f288e9726d 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -462,8 +462,6 @@ struct block_device { int bd_fsfreeze_count; /* Mutex for freeze */ struct mutex bd_fsfreeze_mutex; - /* A semaphore that prevents I/O while block size is being changed */ - struct percpu_rw_semaphore bd_block_size_semaphore; }; /* @@ -2379,8 +2377,6 @@ extern int generic_segment_checks(const struct iovec *iov, unsigned long *nr_segs, size_t *count, int access_flags); /* fs/block_dev.c */ -extern ssize_t blkdev_aio_read(struct kiocb *iocb, const struct iovec *iov, - unsigned long nr_segs, loff_t pos); extern ssize_t blkdev_aio_write(struct kiocb *iocb, const struct iovec *iov, unsigned long nr_segs, loff_t pos); extern int blkdev_fsync(struct file *filp, loff_t start, loff_t end, -- cgit v1.2.3 From bbec0270bdd887f96377065ee38b8848b5afa395 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 29 Nov 2012 12:31:52 -0800 Subject: blkdev_max_block: make private to fs/buffer.c We really don't want to look at the block size for the raw block device accesses in fs/block-dev.c, because it may be changing from under us. So get rid of the max_block logic entirely, since the caller should already have done it anyway. That leaves the only user of this function in fs/buffer.c, so move the whole function there and make it static. Signed-off-by: Linus Torvalds --- include/linux/fs.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 44f288e9726d..75fe9a134803 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2047,7 +2047,6 @@ extern void unregister_blkdev(unsigned int, const char *); extern struct block_device *bdget(dev_t); extern struct block_device *bdgrab(struct block_device *bdev); extern void bd_set_size(struct block_device *, loff_t size); -extern sector_t blkdev_max_block(struct block_device *bdev); extern void bd_forget(struct inode *inode); extern void bdput(struct block_device *); extern void invalidate_bdev(struct block_device *); -- cgit v1.2.3 From 465aac6d496aa3e99caaa6868865fb3830f73d80 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Fri, 30 Nov 2012 10:01:51 +0000 Subject: Fix build when CONFIG_W1_MASTER_GPIO=m b exporting "allnodes" ERROR: "allnodes" [drivers/w1/masters/w1-gpio.ko] undefined! Signed-off-by: Randy Dunlap [grant.likely: allnodes is too generic; rename to of_allnodes] Signed-off-by: Grant Likely Cc: Ville Syrjala --- include/linux/of.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index 7337dc109c89..60053bd7e79a 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -88,14 +88,14 @@ static inline void of_node_put(struct device_node *node) { } #ifdef CONFIG_OF /* Pointer for first entry in chain of all nodes. */ -extern struct device_node *allnodes; +extern struct device_node *of_allnodes; extern struct device_node *of_chosen; extern struct device_node *of_aliases; extern rwlock_t devtree_lock; static inline bool of_have_populated_dt(void) { - return allnodes != NULL; + return of_allnodes != NULL; } static inline bool of_node_is_root(const struct device_node *node) -- cgit v1.2.3 From eed8c02e680c04cd737e0a9cef74e68d8eb0cefa Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Fri, 30 Nov 2012 11:42:40 +0100 Subject: wait: add wait_event_lock_irq() interface New wait_event{_interruptible}_lock_irq{_cmd} macros added. This commit moves the private wait_event_lock_irq() macro from MD to regular wait includes, introduces new macro wait_event_lock_irq_cmd() instead of using the old method with omitting cmd parameter which is ugly and makes a use of new macros in the MD. It also introduces the _interruptible_ variant. The use of new interface is when one have a special lock to protect data structures used in the condition, or one also needs to invoke "cmd" before putting it to sleep. All new macros are expected to be called with the lock taken. The lock is released before sleep and is reacquired afterwards. We will leave the macro with the lock held. Note to DM: IMO this should also fix theoretical race on waitqueue while using simultaneously wait_event_lock_irq() and wait_event() because of lack of locking around current state setting and wait queue removal. Signed-off-by: Lukas Czerner Cc: Neil Brown Cc: David Howells Cc: Ingo Molnar Cc: Peter Zijlstra Signed-off-by: Jens Axboe --- include/linux/wait.h | 164 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 164 insertions(+) (limited to 'include/linux') diff --git a/include/linux/wait.h b/include/linux/wait.h index 168dfe122dd3..7cb64d4b499d 100644 --- a/include/linux/wait.h +++ b/include/linux/wait.h @@ -550,6 +550,170 @@ do { \ __ret; \ }) + +#define __wait_event_lock_irq(wq, condition, lock, cmd) \ +do { \ + DEFINE_WAIT(__wait); \ + \ + for (;;) { \ + prepare_to_wait(&wq, &__wait, TASK_UNINTERRUPTIBLE); \ + if (condition) \ + break; \ + spin_unlock_irq(&lock); \ + cmd; \ + schedule(); \ + spin_lock_irq(&lock); \ + } \ + finish_wait(&wq, &__wait); \ +} while (0) + +/** + * wait_event_lock_irq_cmd - sleep until a condition gets true. The + * condition is checked under the lock. This + * is expected to be called with the lock + * taken. + * @wq: the waitqueue to wait on + * @condition: a C expression for the event to wait for + * @lock: a locked spinlock_t, which will be released before cmd + * and schedule() and reacquired afterwards. + * @cmd: a command which is invoked outside the critical section before + * sleep + * + * The process is put to sleep (TASK_UNINTERRUPTIBLE) until the + * @condition evaluates to true. The @condition is checked each time + * the waitqueue @wq is woken up. + * + * wake_up() has to be called after changing any variable that could + * change the result of the wait condition. + * + * This is supposed to be called while holding the lock. The lock is + * dropped before invoking the cmd and going to sleep and is reacquired + * afterwards. + */ +#define wait_event_lock_irq_cmd(wq, condition, lock, cmd) \ +do { \ + if (condition) \ + break; \ + __wait_event_lock_irq(wq, condition, lock, cmd); \ +} while (0) + +/** + * wait_event_lock_irq - sleep until a condition gets true. The + * condition is checked under the lock. This + * is expected to be called with the lock + * taken. + * @wq: the waitqueue to wait on + * @condition: a C expression for the event to wait for + * @lock: a locked spinlock_t, which will be released before schedule() + * and reacquired afterwards. + * + * The process is put to sleep (TASK_UNINTERRUPTIBLE) until the + * @condition evaluates to true. The @condition is checked each time + * the waitqueue @wq is woken up. + * + * wake_up() has to be called after changing any variable that could + * change the result of the wait condition. + * + * This is supposed to be called while holding the lock. The lock is + * dropped before going to sleep and is reacquired afterwards. + */ +#define wait_event_lock_irq(wq, condition, lock) \ +do { \ + if (condition) \ + break; \ + __wait_event_lock_irq(wq, condition, lock, ); \ +} while (0) + + +#define __wait_event_interruptible_lock_irq(wq, condition, \ + lock, ret, cmd) \ +do { \ + DEFINE_WAIT(__wait); \ + \ + for (;;) { \ + prepare_to_wait(&wq, &__wait, TASK_INTERRUPTIBLE); \ + if (condition) \ + break; \ + if (signal_pending(current)) { \ + ret = -ERESTARTSYS; \ + break; \ + } \ + spin_unlock_irq(&lock); \ + cmd; \ + schedule(); \ + spin_lock_irq(&lock); \ + } \ + finish_wait(&wq, &__wait); \ +} while (0) + +/** + * wait_event_interruptible_lock_irq_cmd - sleep until a condition gets true. + * The condition is checked under the lock. This is expected to + * be called with the lock taken. + * @wq: the waitqueue to wait on + * @condition: a C expression for the event to wait for + * @lock: a locked spinlock_t, which will be released before cmd and + * schedule() and reacquired afterwards. + * @cmd: a command which is invoked outside the critical section before + * sleep + * + * The process is put to sleep (TASK_INTERRUPTIBLE) until the + * @condition evaluates to true or a signal is received. The @condition is + * checked each time the waitqueue @wq is woken up. + * + * wake_up() has to be called after changing any variable that could + * change the result of the wait condition. + * + * This is supposed to be called while holding the lock. The lock is + * dropped before invoking the cmd and going to sleep and is reacquired + * afterwards. + * + * The macro will return -ERESTARTSYS if it was interrupted by a signal + * and 0 if @condition evaluated to true. + */ +#define wait_event_interruptible_lock_irq_cmd(wq, condition, lock, cmd) \ +({ \ + int __ret = 0; \ + \ + if (!(condition)) \ + __wait_event_interruptible_lock_irq(wq, condition, \ + lock, __ret, cmd); \ + __ret; \ +}) + +/** + * wait_event_interruptible_lock_irq - sleep until a condition gets true. + * The condition is checked under the lock. This is expected + * to be called with the lock taken. + * @wq: the waitqueue to wait on + * @condition: a C expression for the event to wait for + * @lock: a locked spinlock_t, which will be released before schedule() + * and reacquired afterwards. + * + * The process is put to sleep (TASK_INTERRUPTIBLE) until the + * @condition evaluates to true or signal is received. The @condition is + * checked each time the waitqueue @wq is woken up. + * + * wake_up() has to be called after changing any variable that could + * change the result of the wait condition. + * + * This is supposed to be called while holding the lock. The lock is + * dropped before going to sleep and is reacquired afterwards. + * + * The macro will return -ERESTARTSYS if it was interrupted by a signal + * and 0 if @condition evaluated to true. + */ +#define wait_event_interruptible_lock_irq(wq, condition, lock) \ +({ \ + int __ret = 0; \ + \ + if (!(condition)) \ + __wait_event_interruptible_lock_irq(wq, condition, \ + lock, __ret, ); \ + __ret; \ +}) + + /* * These are the old interfaces to sleep waiting for an event. * They are racy. DO NOT use them, use the wait_event* interfaces above. -- cgit v1.2.3 From 7b5a35225b0d4fd779cf79d7624e63d1957f6c4d Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Fri, 30 Nov 2012 11:42:41 +0100 Subject: loop: Limit the number of requests in the bio list Currently there is not limitation of number of requests in the loop bio list. This can lead into some nasty situations when the caller spawns tons of bio requests taking huge amount of memory. This is even more obvious with discard where blkdev_issue_discard() will submit all bios for the range and wait for them to finish afterwards. On really big loop devices and slow backing file system this can lead to OOM situation as reported by Dave Chinner. With this patch we will wait in loop_make_request() if the number of bios in the loop bio list would exceed 'nr_congestion_on'. We'll wake up the process as we process the bios form the list. Some threshold hysteresis is in place to avoid high frequency oscillation. Signed-off-by: Lukas Czerner Reported-by: Dave Chinner Signed-off-by: Jens Axboe --- include/linux/loop.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/loop.h b/include/linux/loop.h index 6492181bcb1d..460b60fa7adf 100644 --- a/include/linux/loop.h +++ b/include/linux/loop.h @@ -53,10 +53,13 @@ struct loop_device { spinlock_t lo_lock; struct bio_list lo_bio_list; + unsigned int lo_bio_count; int lo_state; struct mutex lo_ctl_mutex; struct task_struct *lo_thread; wait_queue_head_t lo_event; + /* wait queue for incoming requests */ + wait_queue_head_t lo_req_wait; struct request_queue *lo_queue; struct gendisk *lo_disk; -- cgit v1.2.3 From 12a5105e04143569b3e9e5ef03cf9cad8862473a Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Thu, 29 Nov 2012 00:17:15 +0530 Subject: mfd: stmpe: Get rid of irq_invert_polarity Since the very first patch, stmpe core driver is using irq_invert_polarity as part of platform data. But, nobody is actually using it in kernel till now. Also, this is not something part of hardware specs, but is included to cater some board mistakes or quirks. So, better get rid of it. This is earlier discussed here: https://lkml.org/lkml/2012/11/27/636 Signed-off-by: Viresh Kumar Acked-by: Lee Jones Signed-off-by: Samuel Ortiz --- include/linux/mfd/stmpe.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/stmpe.h b/include/linux/mfd/stmpe.h index 15dac790365f..383ac1512a39 100644 --- a/include/linux/mfd/stmpe.h +++ b/include/linux/mfd/stmpe.h @@ -190,7 +190,6 @@ struct stmpe_ts_platform_data { * @id: device id to distinguish between multiple STMPEs on the same board * @blocks: bitmask of blocks to enable (use STMPE_BLOCK_*) * @irq_trigger: IRQ trigger to use for the interrupt to the host - * @irq_invert_polarity: IRQ line is connected with reversed polarity * @autosleep: bool to enable/disable stmpe autosleep * @autosleep_timeout: inactivity timeout in milliseconds for autosleep * @irq_base: base IRQ number. %STMPE_NR_IRQS irqs will be used, or @@ -207,7 +206,6 @@ struct stmpe_platform_data { unsigned int blocks; int irq_base; unsigned int irq_trigger; - bool irq_invert_polarity; bool autosleep; bool irq_over_gpio; int irq_gpio; -- cgit v1.2.3 From 0e5fca8106199f5c680bb93e75c16381c4c256ce Mon Sep 17 00:00:00 2001 From: "Kim, Milo" Date: Thu, 29 Nov 2012 08:48:26 +0000 Subject: mfd: tps65910: Remove unused data The 'io_mutex' is not used anywhere. The regmap API supports the mutex internally, so no additional mutex is required. And 'domain' private data is unnecessary because the irq domain is already registered by using regmap_add_irq_chip(). Signed-off-by: Milo(Woogyom) Kim Acked-by: Laxman Dewangan Signed-off-by: Samuel Ortiz --- include/linux/mfd/tps65910.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/tps65910.h b/include/linux/mfd/tps65910.h index 0b16903f7e88..20e433e551e3 100644 --- a/include/linux/mfd/tps65910.h +++ b/include/linux/mfd/tps65910.h @@ -893,7 +893,6 @@ struct tps65910 { struct device *dev; struct i2c_client *i2c_client; struct regmap *regmap; - struct mutex io_mutex; unsigned int id; /* Client devices */ @@ -907,7 +906,6 @@ struct tps65910 { /* IRQ Handling */ int chip_irq; struct regmap_irq_chip_data *irq_data; - struct irq_domain *domain; }; struct tps65910_platform_data { -- cgit v1.2.3 From e29482e8487954c87dc7b4fdbc53574bf1d4cce2 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 30 Nov 2012 12:37:36 +0100 Subject: gpio / ACPI: add ACPI support Add support for translating ACPI GPIO pin numbers to Linux GPIO API pins. Needs a gpio controller driver with the acpi handler hook set. Drivers can use acpi_get_gpio() to translate ACPI5 GpioIO and GpioInt resources to Linux GPIO's. Signed-off-by: Mathias Nyman Signed-off-by: Mika Westerberg Acked-by: Grant Likely Signed-off-by: Rafael J. Wysocki --- include/linux/acpi_gpio.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 include/linux/acpi_gpio.h (limited to 'include/linux') diff --git a/include/linux/acpi_gpio.h b/include/linux/acpi_gpio.h new file mode 100644 index 000000000000..91615a389b65 --- /dev/null +++ b/include/linux/acpi_gpio.h @@ -0,0 +1,19 @@ +#ifndef _LINUX_ACPI_GPIO_H_ +#define _LINUX_ACPI_GPIO_H_ + +#include + +#ifdef CONFIG_GPIO_ACPI + +int acpi_get_gpio(char *path, int pin); + +#else /* CONFIG_GPIO_ACPI */ + +static inline int acpi_get_gpio(char *path, int pin) +{ + return -ENODEV; +} + +#endif /* CONFIG_GPIO_ACPI */ + +#endif /* _LINUX_ACPI_GPIO_H_ */ -- cgit v1.2.3 From f87f1a2375a51ef8c5048bfce42587dbea1ca627 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Wed, 21 Nov 2012 16:27:00 +0000 Subject: staging:iio: Move ad7793 driver out of staging The driver does not expose any custom API to userspace and none of the standard static code checker tools report any issues, so move it out of staging. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- include/linux/platform_data/ad7793.h | 112 +++++++++++++++++++++++++++++++++++ 1 file changed, 112 insertions(+) create mode 100644 include/linux/platform_data/ad7793.h (limited to 'include/linux') diff --git a/include/linux/platform_data/ad7793.h b/include/linux/platform_data/ad7793.h new file mode 100644 index 000000000000..7ea6751aae6d --- /dev/null +++ b/include/linux/platform_data/ad7793.h @@ -0,0 +1,112 @@ +/* + * AD7792/AD7793 SPI ADC driver + * + * Copyright 2011 Analog Devices Inc. + * + * Licensed under the GPL-2. + */ +#ifndef __LINUX_PLATFORM_DATA_AD7793_H__ +#define __LINUX_PLATFORM_DATA_AD7793_H__ + +/** + * enum ad7793_clock_source - AD7793 clock source selection + * @AD7793_CLK_SRC_INT: Internal 64 kHz clock, not available at the CLK pin. + * @AD7793_CLK_SRC_INT_CO: Internal 64 kHz clock, available at the CLK pin. + * @AD7793_CLK_SRC_EXT: Use external clock. + * @AD7793_CLK_SRC_EXT_DIV2: Use external clock divided by 2. + */ +enum ad7793_clock_source { + AD7793_CLK_SRC_INT, + AD7793_CLK_SRC_INT_CO, + AD7793_CLK_SRC_EXT, + AD7793_CLK_SRC_EXT_DIV2, +}; + +/** + * enum ad7793_bias_voltage - AD7793 bias voltage selection + * @AD7793_BIAS_VOLTAGE_DISABLED: Bias voltage generator disabled + * @AD7793_BIAS_VOLTAGE_AIN1: Bias voltage connected to AIN1(-). + * @AD7793_BIAS_VOLTAGE_AIN2: Bias voltage connected to AIN2(-). + * @AD7793_BIAS_VOLTAGE_AIN3: Bias voltage connected to AIN3(-). + * Only valid for AD7795/AD7796. + */ +enum ad7793_bias_voltage { + AD7793_BIAS_VOLTAGE_DISABLED, + AD7793_BIAS_VOLTAGE_AIN1, + AD7793_BIAS_VOLTAGE_AIN2, + AD7793_BIAS_VOLTAGE_AIN3, +}; + +/** + * enum ad7793_refsel - AD7793 reference voltage selection + * @AD7793_REFSEL_REFIN1: External reference applied between REFIN1(+) + * and REFIN1(-). + * @AD7793_REFSEL_REFIN2: External reference applied between REFIN2(+) and + * and REFIN1(-). Only valid for AD7795/AD7796. + * @AD7793_REFSEL_INTERNAL: Internal 1.17 V reference. + */ +enum ad7793_refsel { + AD7793_REFSEL_REFIN1 = 0, + AD7793_REFSEL_REFIN2 = 1, + AD7793_REFSEL_INTERNAL = 2, +}; + +/** + * enum ad7793_current_source_direction - AD7793 excitation current direction + * @AD7793_IEXEC1_IOUT1_IEXEC2_IOUT2: Current source IEXC1 connected to pin + * IOUT1, current source IEXC2 connected to pin IOUT2. + * @AD7793_IEXEC1_IOUT2_IEXEC2_IOUT1: Current source IEXC2 connected to pin + * IOUT1, current source IEXC1 connected to pin IOUT2. + * @AD7793_IEXEC1_IEXEC2_IOUT1: Both current sources connected to pin IOUT1. + * Only valid when the current sources are set to 10 uA or 210 uA. + * @AD7793_IEXEC1_IEXEC2_IOUT2: Both current sources connected to Pin IOUT2. + * Only valid when the current ources are set to 10 uA or 210 uA. + */ +enum ad7793_current_source_direction { + AD7793_IEXEC1_IOUT1_IEXEC2_IOUT2 = 0, + AD7793_IEXEC1_IOUT2_IEXEC2_IOUT1 = 1, + AD7793_IEXEC1_IEXEC2_IOUT1 = 2, + AD7793_IEXEC1_IEXEC2_IOUT2 = 3, +}; + +/** + * enum ad7793_excitation_current - AD7793 excitation current selection + * @AD7793_IX_DISABLED: Excitation current Disabled. + * @AD7793_IX_10uA: Enable 10 micro-ampere excitation current. + * @AD7793_IX_210uA: Enable 210 micro-ampere excitation current. + * @AD7793_IX_1mA: Enable 1 milli-Ampere excitation current. + */ +enum ad7793_excitation_current { + AD7793_IX_DISABLED = 0, + AD7793_IX_10uA = 1, + AD7793_IX_210uA = 2, + AD7793_IX_1mA = 3, +}; + +/** + * struct ad7793_platform_data - AD7793 platform data + * @clock_src: Clock source selection + * @burnout_current: If set to true the 100nA burnout current is enabled. + * @boost_enable: Enable boost for the bias voltage generator. + * @buffered: If set to true configure the device for buffered input mode. + * @unipolar: If set to true sample in unipolar mode, if set to false sample in + * bipolar mode. + * @refsel: Reference voltage selection + * @bias_voltage: Bias voltage selection + * @exitation_current: Excitation current selection + * @current_source_direction: Excitation current direction selection + */ +struct ad7793_platform_data { + enum ad7793_clock_source clock_src; + bool burnout_current; + bool boost_enable; + bool buffered; + bool unipolar; + + enum ad7793_refsel refsel; + enum ad7793_bias_voltage bias_voltage; + enum ad7793_excitation_current exitation_current; + enum ad7793_current_source_direction current_source_direction; +}; + +#endif /* IIO_ADC_AD7793_H_ */ -- cgit v1.2.3 From 45c3eb7d3a07eb08d1b5b0f5983a996d41610b84 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Fri, 30 Nov 2012 08:41:50 -0800 Subject: ARM: OMAP: Move plat-omap/dma-omap.h to include/linux/omap-dma.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Based on earlier discussions[1] we attempted to find a suitable location for the omap DMA header in commit 2b6c4e73 (ARM: OMAP: DMA: Move plat/dma.h to plat-omap/dma-omap.h) until the conversion to dmaengine is complete. Unfortunately that was before I was able to try to test compile of the ARM multiplatform builds for omap2+, and the end result was not very good. So I'm creating yet another all over the place patch to cut the last dependency for building omap2+ for ARM multiplatform. After this, we have finally removed the driver dependencies to the arch/arm code, except for few drivers that are being worked on. The other option was to make the path to work, but we'd have to add some new header directory to for multiplatform builds. Or we would have to manually include arch/arm/plat-omap/include again from arch/arm/Makefile for omap2+. Neither of these alternatives sound appealing as they will likely lead addition of various other headers exposed to the drivers, which we want to avoid for the multiplatform kernels. Since we already have a minimal include/linux/omap-dma.h, let's just use that instead and add a note to it to not use the custom omap DMA functions any longer where possible. Note that converting omap DMA to dmaengine depends on dmaengine supporting automatically incrementing the FIFO address at the device end, and converting all the remaining legacy drivers. So it's going to be few more merge windows. [1] https://patchwork.kernel.org/patch/1519591/# cc: Russell King cc: Kevin Hilman cc: "Benoît Cousson" cc: Herbert Xu cc: "David S. Miller" cc: Vinod Koul cc: Dan Williams cc: Mauro Carvalho Chehab cc: Laurent Pinchart cc: Guennadi Liakhovetski cc: David Woodhouse cc: Kyungmin Park cc: Greg Kroah-Hartman cc: Tomi Valkeinen cc: Florian Tobias Schandinat cc: Hans Verkuil cc: Vaibhav Hiremath cc: Lokesh Vutla cc: Rusty Russell cc: Artem Bityutskiy cc: Afzal Mohammed cc: linux-crypto@vger.kernel.org cc: linux-media@vger.kernel.org cc: linux-mtd@lists.infradead.org cc: linux-usb@vger.kernel.org cc: linux-fbdev@vger.kernel.org Acked-by: Felipe Balbi Signed-off-by: Tony Lindgren --- include/linux/omap-dma.h | 366 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 366 insertions(+) (limited to 'include/linux') diff --git a/include/linux/omap-dma.h b/include/linux/omap-dma.h index eb475a8ea25b..7af25a9c9c51 100644 --- a/include/linux/omap-dma.h +++ b/include/linux/omap-dma.h @@ -19,4 +19,370 @@ static inline bool omap_dma_filter_fn(struct dma_chan *c, void *d) } #endif +/* + * Legacy OMAP DMA handling defines and functions + * + * NOTE: Do not use these any longer. + * + * Use the generic dmaengine functions as defined in + * include/linux/dmaengine.h. + * + * Copyright (C) 2003 Nokia Corporation + * Author: Juha Yrjölä + * + */ + +#include + +#define INT_DMA_LCD 25 + +#define OMAP1_DMA_TOUT_IRQ (1 << 0) +#define OMAP_DMA_DROP_IRQ (1 << 1) +#define OMAP_DMA_HALF_IRQ (1 << 2) +#define OMAP_DMA_FRAME_IRQ (1 << 3) +#define OMAP_DMA_LAST_IRQ (1 << 4) +#define OMAP_DMA_BLOCK_IRQ (1 << 5) +#define OMAP1_DMA_SYNC_IRQ (1 << 6) +#define OMAP2_DMA_PKT_IRQ (1 << 7) +#define OMAP2_DMA_TRANS_ERR_IRQ (1 << 8) +#define OMAP2_DMA_SECURE_ERR_IRQ (1 << 9) +#define OMAP2_DMA_SUPERVISOR_ERR_IRQ (1 << 10) +#define OMAP2_DMA_MISALIGNED_ERR_IRQ (1 << 11) + +#define OMAP_DMA_CCR_EN (1 << 7) +#define OMAP_DMA_CCR_RD_ACTIVE (1 << 9) +#define OMAP_DMA_CCR_WR_ACTIVE (1 << 10) +#define OMAP_DMA_CCR_SEL_SRC_DST_SYNC (1 << 24) +#define OMAP_DMA_CCR_BUFFERING_DISABLE (1 << 25) + +#define OMAP_DMA_DATA_TYPE_S8 0x00 +#define OMAP_DMA_DATA_TYPE_S16 0x01 +#define OMAP_DMA_DATA_TYPE_S32 0x02 + +#define OMAP_DMA_SYNC_ELEMENT 0x00 +#define OMAP_DMA_SYNC_FRAME 0x01 +#define OMAP_DMA_SYNC_BLOCK 0x02 +#define OMAP_DMA_SYNC_PACKET 0x03 + +#define OMAP_DMA_DST_SYNC_PREFETCH 0x02 +#define OMAP_DMA_SRC_SYNC 0x01 +#define OMAP_DMA_DST_SYNC 0x00 + +#define OMAP_DMA_PORT_EMIFF 0x00 +#define OMAP_DMA_PORT_EMIFS 0x01 +#define OMAP_DMA_PORT_OCP_T1 0x02 +#define OMAP_DMA_PORT_TIPB 0x03 +#define OMAP_DMA_PORT_OCP_T2 0x04 +#define OMAP_DMA_PORT_MPUI 0x05 + +#define OMAP_DMA_AMODE_CONSTANT 0x00 +#define OMAP_DMA_AMODE_POST_INC 0x01 +#define OMAP_DMA_AMODE_SINGLE_IDX 0x02 +#define OMAP_DMA_AMODE_DOUBLE_IDX 0x03 + +#define DMA_DEFAULT_FIFO_DEPTH 0x10 +#define DMA_DEFAULT_ARB_RATE 0x01 +/* Pass THREAD_RESERVE ORed with THREAD_FIFO for tparams */ +#define DMA_THREAD_RESERVE_NORM (0x00 << 12) /* Def */ +#define DMA_THREAD_RESERVE_ONET (0x01 << 12) +#define DMA_THREAD_RESERVE_TWOT (0x02 << 12) +#define DMA_THREAD_RESERVE_THREET (0x03 << 12) +#define DMA_THREAD_FIFO_NONE (0x00 << 14) /* Def */ +#define DMA_THREAD_FIFO_75 (0x01 << 14) +#define DMA_THREAD_FIFO_25 (0x02 << 14) +#define DMA_THREAD_FIFO_50 (0x03 << 14) + +/* DMA4_OCP_SYSCONFIG bits */ +#define DMA_SYSCONFIG_MIDLEMODE_MASK (3 << 12) +#define DMA_SYSCONFIG_CLOCKACTIVITY_MASK (3 << 8) +#define DMA_SYSCONFIG_EMUFREE (1 << 5) +#define DMA_SYSCONFIG_SIDLEMODE_MASK (3 << 3) +#define DMA_SYSCONFIG_SOFTRESET (1 << 2) +#define DMA_SYSCONFIG_AUTOIDLE (1 << 0) + +#define DMA_SYSCONFIG_MIDLEMODE(n) ((n) << 12) +#define DMA_SYSCONFIG_SIDLEMODE(n) ((n) << 3) + +#define DMA_IDLEMODE_SMARTIDLE 0x2 +#define DMA_IDLEMODE_NO_IDLE 0x1 +#define DMA_IDLEMODE_FORCE_IDLE 0x0 + +/* Chaining modes*/ +#ifndef CONFIG_ARCH_OMAP1 +#define OMAP_DMA_STATIC_CHAIN 0x1 +#define OMAP_DMA_DYNAMIC_CHAIN 0x2 +#define OMAP_DMA_CHAIN_ACTIVE 0x1 +#define OMAP_DMA_CHAIN_INACTIVE 0x0 +#endif + +#define DMA_CH_PRIO_HIGH 0x1 +#define DMA_CH_PRIO_LOW 0x0 /* Def */ + +/* Errata handling */ +#define IS_DMA_ERRATA(id) (errata & (id)) +#define SET_DMA_ERRATA(id) (errata |= (id)) + +#define DMA_ERRATA_IFRAME_BUFFERING BIT(0x0) +#define DMA_ERRATA_PARALLEL_CHANNELS BIT(0x1) +#define DMA_ERRATA_i378 BIT(0x2) +#define DMA_ERRATA_i541 BIT(0x3) +#define DMA_ERRATA_i88 BIT(0x4) +#define DMA_ERRATA_3_3 BIT(0x5) +#define DMA_ROMCODE_BUG BIT(0x6) + +/* Attributes for OMAP DMA Contrller */ +#define DMA_LINKED_LCH BIT(0x0) +#define GLOBAL_PRIORITY BIT(0x1) +#define RESERVE_CHANNEL BIT(0x2) +#define IS_CSSA_32 BIT(0x3) +#define IS_CDSA_32 BIT(0x4) +#define IS_RW_PRIORITY BIT(0x5) +#define ENABLE_1510_MODE BIT(0x6) +#define SRC_PORT BIT(0x7) +#define DST_PORT BIT(0x8) +#define SRC_INDEX BIT(0x9) +#define DST_INDEX BIT(0xa) +#define IS_BURST_ONLY4 BIT(0xb) +#define CLEAR_CSR_ON_READ BIT(0xc) +#define IS_WORD_16 BIT(0xd) +#define ENABLE_16XX_MODE BIT(0xe) +#define HS_CHANNELS_RESERVED BIT(0xf) + +/* Defines for DMA Capabilities */ +#define DMA_HAS_TRANSPARENT_CAPS (0x1 << 18) +#define DMA_HAS_CONSTANT_FILL_CAPS (0x1 << 19) +#define DMA_HAS_DESCRIPTOR_CAPS (0x3 << 20) + +enum omap_reg_offsets { + +GCR, GSCR, GRST1, HW_ID, +PCH2_ID, PCH0_ID, PCH1_ID, PCHG_ID, +PCHD_ID, CAPS_0, CAPS_1, CAPS_2, +CAPS_3, CAPS_4, PCH2_SR, PCH0_SR, +PCH1_SR, PCHD_SR, REVISION, IRQSTATUS_L0, +IRQSTATUS_L1, IRQSTATUS_L2, IRQSTATUS_L3, IRQENABLE_L0, +IRQENABLE_L1, IRQENABLE_L2, IRQENABLE_L3, SYSSTATUS, +OCP_SYSCONFIG, + +/* omap1+ specific */ +CPC, CCR2, LCH_CTRL, + +/* Common registers for all omap's */ +CSDP, CCR, CICR, CSR, +CEN, CFN, CSFI, CSEI, +CSAC, CDAC, CDEI, +CDFI, CLNK_CTRL, + +/* Channel specific registers */ +CSSA, CDSA, COLOR, +CCEN, CCFN, + +/* omap3630 and omap4 specific */ +CDP, CNDP, CCDN, + +}; + +enum omap_dma_burst_mode { + OMAP_DMA_DATA_BURST_DIS = 0, + OMAP_DMA_DATA_BURST_4, + OMAP_DMA_DATA_BURST_8, + OMAP_DMA_DATA_BURST_16, +}; + +enum end_type { + OMAP_DMA_LITTLE_ENDIAN = 0, + OMAP_DMA_BIG_ENDIAN +}; + +enum omap_dma_color_mode { + OMAP_DMA_COLOR_DIS = 0, + OMAP_DMA_CONSTANT_FILL, + OMAP_DMA_TRANSPARENT_COPY +}; + +enum omap_dma_write_mode { + OMAP_DMA_WRITE_NON_POSTED = 0, + OMAP_DMA_WRITE_POSTED, + OMAP_DMA_WRITE_LAST_NON_POSTED +}; + +enum omap_dma_channel_mode { + OMAP_DMA_LCH_2D = 0, + OMAP_DMA_LCH_G, + OMAP_DMA_LCH_P, + OMAP_DMA_LCH_PD +}; + +struct omap_dma_channel_params { + int data_type; /* data type 8,16,32 */ + int elem_count; /* number of elements in a frame */ + int frame_count; /* number of frames in a element */ + + int src_port; /* Only on OMAP1 REVISIT: Is this needed? */ + int src_amode; /* constant, post increment, indexed, + double indexed */ + unsigned long src_start; /* source address : physical */ + int src_ei; /* source element index */ + int src_fi; /* source frame index */ + + int dst_port; /* Only on OMAP1 REVISIT: Is this needed? */ + int dst_amode; /* constant, post increment, indexed, + double indexed */ + unsigned long dst_start; /* source address : physical */ + int dst_ei; /* source element index */ + int dst_fi; /* source frame index */ + + int trigger; /* trigger attached if the channel is + synchronized */ + int sync_mode; /* sycn on element, frame , block or packet */ + int src_or_dst_synch; /* source synch(1) or destination synch(0) */ + + int ie; /* interrupt enabled */ + + unsigned char read_prio;/* read priority */ + unsigned char write_prio;/* write priority */ + +#ifndef CONFIG_ARCH_OMAP1 + enum omap_dma_burst_mode burst_mode; /* Burst mode 4/8/16 words */ +#endif +}; + +struct omap_dma_lch { + int next_lch; + int dev_id; + u16 saved_csr; + u16 enabled_irqs; + const char *dev_name; + void (*callback)(int lch, u16 ch_status, void *data); + void *data; + long flags; + /* required for Dynamic chaining */ + int prev_linked_ch; + int next_linked_ch; + int state; + int chain_id; + int status; +}; + +struct omap_dma_dev_attr { + u32 dev_caps; + u16 lch_count; + u16 chan_count; + struct omap_dma_lch *chan; +}; + +/* System DMA platform data structure */ +struct omap_system_dma_plat_info { + struct omap_dma_dev_attr *dma_attr; + u32 errata; + void (*disable_irq_lch)(int lch); + void (*show_dma_caps)(void); + void (*clear_lch_regs)(int lch); + void (*clear_dma)(int lch); + void (*dma_write)(u32 val, int reg, int lch); + u32 (*dma_read)(int reg, int lch); +}; + +#ifdef CONFIG_ARCH_OMAP2PLUS +#define dma_omap2plus() 1 +#else +#define dma_omap2plus() 0 #endif +#define dma_omap1() (!dma_omap2plus()) +#define dma_omap15xx() ((dma_omap1() && (d->dev_caps & ENABLE_1510_MODE))) +#define dma_omap16xx() ((dma_omap1() && (d->dev_caps & ENABLE_16XX_MODE))) + +extern void omap_set_dma_priority(int lch, int dst_port, int priority); +extern int omap_request_dma(int dev_id, const char *dev_name, + void (*callback)(int lch, u16 ch_status, void *data), + void *data, int *dma_ch); +extern void omap_enable_dma_irq(int ch, u16 irq_bits); +extern void omap_disable_dma_irq(int ch, u16 irq_bits); +extern void omap_free_dma(int ch); +extern void omap_start_dma(int lch); +extern void omap_stop_dma(int lch); +extern void omap_set_dma_transfer_params(int lch, int data_type, + int elem_count, int frame_count, + int sync_mode, + int dma_trigger, int src_or_dst_synch); +extern void omap_set_dma_color_mode(int lch, enum omap_dma_color_mode mode, + u32 color); +extern void omap_set_dma_write_mode(int lch, enum omap_dma_write_mode mode); +extern void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode); + +extern void omap_set_dma_src_params(int lch, int src_port, int src_amode, + unsigned long src_start, + int src_ei, int src_fi); +extern void omap_set_dma_src_index(int lch, int eidx, int fidx); +extern void omap_set_dma_src_data_pack(int lch, int enable); +extern void omap_set_dma_src_burst_mode(int lch, + enum omap_dma_burst_mode burst_mode); + +extern void omap_set_dma_dest_params(int lch, int dest_port, int dest_amode, + unsigned long dest_start, + int dst_ei, int dst_fi); +extern void omap_set_dma_dest_index(int lch, int eidx, int fidx); +extern void omap_set_dma_dest_data_pack(int lch, int enable); +extern void omap_set_dma_dest_burst_mode(int lch, + enum omap_dma_burst_mode burst_mode); + +extern void omap_set_dma_params(int lch, + struct omap_dma_channel_params *params); + +extern void omap_dma_link_lch(int lch_head, int lch_queue); +extern void omap_dma_unlink_lch(int lch_head, int lch_queue); + +extern int omap_set_dma_callback(int lch, + void (*callback)(int lch, u16 ch_status, void *data), + void *data); +extern dma_addr_t omap_get_dma_src_pos(int lch); +extern dma_addr_t omap_get_dma_dst_pos(int lch); +extern void omap_clear_dma(int lch); +extern int omap_get_dma_active_status(int lch); +extern int omap_dma_running(void); +extern void omap_dma_set_global_params(int arb_rate, int max_fifo_depth, + int tparams); +extern int omap_dma_set_prio_lch(int lch, unsigned char read_prio, + unsigned char write_prio); +extern void omap_set_dma_dst_endian_type(int lch, enum end_type etype); +extern void omap_set_dma_src_endian_type(int lch, enum end_type etype); +extern int omap_get_dma_index(int lch, int *ei, int *fi); + +void omap_dma_global_context_save(void); +void omap_dma_global_context_restore(void); + +extern void omap_dma_disable_irq(int lch); + +/* Chaining APIs */ +#ifndef CONFIG_ARCH_OMAP1 +extern int omap_request_dma_chain(int dev_id, const char *dev_name, + void (*callback) (int lch, u16 ch_status, + void *data), + int *chain_id, int no_of_chans, + int chain_mode, + struct omap_dma_channel_params params); +extern int omap_free_dma_chain(int chain_id); +extern int omap_dma_chain_a_transfer(int chain_id, int src_start, + int dest_start, int elem_count, + int frame_count, void *callbk_data); +extern int omap_start_dma_chain_transfers(int chain_id); +extern int omap_stop_dma_chain_transfers(int chain_id); +extern int omap_get_dma_chain_index(int chain_id, int *ei, int *fi); +extern int omap_get_dma_chain_dst_pos(int chain_id); +extern int omap_get_dma_chain_src_pos(int chain_id); + +extern int omap_modify_dma_chain_params(int chain_id, + struct omap_dma_channel_params params); +extern int omap_dma_chain_status(int chain_id); +#endif + +#if defined(CONFIG_ARCH_OMAP1) && defined(CONFIG_FB_OMAP) +#include +#else +static inline int omap_lcd_dma_running(void) +{ + return 0; +} +#endif + +#endif /* __LINUX_OMAP_DMA_H */ -- cgit v1.2.3 From 9a4da8a5b109906a64bed5aaeb83bf4edb1f5888 Mon Sep 17 00:00:00 2001 From: Jan Glauber Date: Thu, 29 Nov 2012 13:05:05 +0100 Subject: s390/pci: PCI adapter interrupts for MSI/MSI-X Support PCI adapter interrupts using the Single-IRQ-mode. Single-IRQ-mode disables an adapter IRQ automatically after delivering it until the SIC instruction enables it again. This is used to reduce the number of IRQs for streaming workloads. Up to 64 MSI handlers can be registered per PCI function. A hash table is used to map interrupt numbers to MSI descriptors. The interrupt vector is scanned using the flogr instruction. Only MSI/MSI-X interrupts are supported, no legacy INTs. Signed-off-by: Jan Glauber Signed-off-by: Martin Schwidefsky --- include/linux/irq.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 216b0ba109d7..e21ed837c673 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -10,9 +10,6 @@ */ #include - -#ifndef CONFIG_S390 - #include #include #include @@ -737,8 +734,11 @@ static inline void irq_gc_lock(struct irq_chip_generic *gc) { } static inline void irq_gc_unlock(struct irq_chip_generic *gc) { } #endif -#endif /* CONFIG_GENERIC_HARDIRQS */ +#else /* !CONFIG_GENERIC_HARDIRQS */ -#endif /* !CONFIG_S390 */ +extern struct msi_desc *irq_get_msi_desc(unsigned int irq); +extern int irq_set_msi_desc(unsigned int irq, struct msi_desc *entry); + +#endif /* CONFIG_GENERIC_HARDIRQS */ #endif /* _LINUX_IRQ_H */ -- cgit v1.2.3 From a50915394f1fc02c2861d3b7ce7014788aa5066e Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Thu, 29 Nov 2012 13:54:27 -0800 Subject: revert "Revert "mm: remove __GFP_NO_KSWAPD"" It apepars that this patch was innocent, and we hope that "mm: avoid waking kswapd for THP allocations when compaction is deferred or contended" will fix the final kswapd-spinning cause. Cc: Zdenek Kabelac Cc: Seth Jennings Cc: Valdis Kletnieks Cc: Jiri Slaby Cc: Rik van Riel Cc: Robert Jennings Cc: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/gfp.h | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/gfp.h b/include/linux/gfp.h index d0a79678f169..76e1aa206f57 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -30,10 +30,9 @@ struct vm_area_struct; #define ___GFP_HARDWALL 0x20000u #define ___GFP_THISNODE 0x40000u #define ___GFP_RECLAIMABLE 0x80000u -#define ___GFP_NOTRACK 0x200000u -#define ___GFP_NO_KSWAPD 0x400000u -#define ___GFP_OTHER_NODE 0x800000u -#define ___GFP_WRITE 0x1000000u +#define ___GFP_NOTRACK 0x100000u +#define ___GFP_OTHER_NODE 0x200000u +#define ___GFP_WRITE 0x400000u /* * GFP bitmasks.. @@ -86,7 +85,6 @@ struct vm_area_struct; #define __GFP_RECLAIMABLE ((__force gfp_t)___GFP_RECLAIMABLE) /* Page is reclaimable */ #define __GFP_NOTRACK ((__force gfp_t)___GFP_NOTRACK) /* Don't track with kmemcheck */ -#define __GFP_NO_KSWAPD ((__force gfp_t)___GFP_NO_KSWAPD) #define __GFP_OTHER_NODE ((__force gfp_t)___GFP_OTHER_NODE) /* On behalf of other node */ #define __GFP_WRITE ((__force gfp_t)___GFP_WRITE) /* Allocator intends to dirty page */ @@ -96,7 +94,7 @@ struct vm_area_struct; */ #define __GFP_NOTRACK_FALSE_POSITIVE (__GFP_NOTRACK) -#define __GFP_BITS_SHIFT 25 /* Room for N __GFP_FOO bits */ +#define __GFP_BITS_SHIFT 23 /* Room for N __GFP_FOO bits */ #define __GFP_BITS_MASK ((__force gfp_t)((1 << __GFP_BITS_SHIFT) - 1)) /* This equals 0, but use constants in case they ever change */ @@ -116,8 +114,7 @@ struct vm_area_struct; __GFP_MOVABLE) #define GFP_IOFS (__GFP_IO | __GFP_FS) #define GFP_TRANSHUGE (GFP_HIGHUSER_MOVABLE | __GFP_COMP | \ - __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN | \ - __GFP_NO_KSWAPD) + __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN) #ifdef CONFIG_NUMA #define GFP_THISNODE (__GFP_THISNODE | __GFP_NOWARN | __GFP_NORETRY) -- cgit v1.2.3 From 0362063b7be97f6f8e2c644b970f5726489aacdf Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Tue, 27 Nov 2012 00:31:55 +0100 Subject: ssb: extif: fix compile errors If CONFIG_SSB_EMBEDDED or CONFIG_SSB_DRIVER_MIPS is set and CONFIG_SSB_DRIVER_EXTIF is not set, it will cause compile problems because of missing functions. This patch fixes these problems. The mips driver now also uses ssb_chipco_available() instead of checking bus->chipco.dev manually. Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/ssb/ssb_driver_extif.h | 42 ++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb_driver_extif.h b/include/linux/ssb/ssb_driver_extif.h index 91161f0aa22b..2604efa7dc4d 100644 --- a/include/linux/ssb/ssb_driver_extif.h +++ b/include/linux/ssb/ssb_driver_extif.h @@ -204,11 +204,53 @@ void ssb_extif_get_clockcontrol(struct ssb_extif *extif, { } +static inline +void ssb_extif_timing_init(struct ssb_extif *extif, unsigned long ns) +{ +} + static inline void ssb_extif_watchdog_timer_set(struct ssb_extif *extif, u32 ticks) { } +static inline u32 ssb_extif_gpio_in(struct ssb_extif *extif, u32 mask) +{ + return 0; +} + +static inline u32 ssb_extif_gpio_out(struct ssb_extif *extif, u32 mask, + u32 value) +{ + return 0; +} + +static inline u32 ssb_extif_gpio_outen(struct ssb_extif *extif, u32 mask, + u32 value) +{ + return 0; +} + +static inline u32 ssb_extif_gpio_polarity(struct ssb_extif *extif, u32 mask, + u32 value) +{ + return 0; +} + +static inline u32 ssb_extif_gpio_intmask(struct ssb_extif *extif, u32 mask, + u32 value) +{ + return 0; +} + +#ifdef CONFIG_SSB_SERIAL +static inline int ssb_extif_serial_init(struct ssb_extif *extif, + struct ssb_serial_port *ports) +{ + return 0; +} +#endif /* CONFIG_SSB_SERIAL */ + #endif /* CONFIG_SSB_DRIVER_EXTIF */ #endif /* LINUX_SSB_EXTIFCORE_H_ */ -- cgit v1.2.3 From 91d1aa43d30505b0b825db8898ffc80a8eca96c7 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Tue, 27 Nov 2012 19:33:25 +0100 Subject: context_tracking: New context tracking susbsystem Create a new subsystem that probes on kernel boundaries to keep track of the transitions between level contexts with two basic initial contexts: user or kernel. This is an abstraction of some RCU code that use such tracking to implement its userspace extended quiescent state. We need to pull this up from RCU into this new level of indirection because this tracking is also going to be used to implement an "on demand" generic virtual cputime accounting. A necessary step to shutdown the tick while still accounting the cputime. Signed-off-by: Frederic Weisbecker Cc: Andrew Morton Cc: H. Peter Anvin Cc: Ingo Molnar Cc: Paul E. McKenney Cc: Peter Zijlstra Cc: Steven Rostedt Cc: Thomas Gleixner Cc: Li Zhong Cc: Gilad Ben-Yossef Reviewed-by: Steven Rostedt [ paulmck: fix whitespace error and email address. ] Signed-off-by: Paul E. McKenney --- include/linux/context_tracking.h | 18 ++++++++++++++++++ include/linux/rcupdate.h | 2 -- 2 files changed, 18 insertions(+), 2 deletions(-) create mode 100644 include/linux/context_tracking.h (limited to 'include/linux') diff --git a/include/linux/context_tracking.h b/include/linux/context_tracking.h new file mode 100644 index 000000000000..e24339ccb7f0 --- /dev/null +++ b/include/linux/context_tracking.h @@ -0,0 +1,18 @@ +#ifndef _LINUX_CONTEXT_TRACKING_H +#define _LINUX_CONTEXT_TRACKING_H + +#ifdef CONFIG_CONTEXT_TRACKING +#include + +extern void user_enter(void); +extern void user_exit(void); +extern void context_tracking_task_switch(struct task_struct *prev, + struct task_struct *next); +#else +static inline void user_enter(void) { } +static inline void user_exit(void) { } +static inline void context_tracking_task_switch(struct task_struct *prev, + struct task_struct *next) { } +#endif /* !CONFIG_CONTEXT_TRACKING */ + +#endif diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 8fe7c1840d30..275aa3f1062d 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -222,8 +222,6 @@ extern void rcu_user_enter(void); extern void rcu_user_exit(void); extern void rcu_user_enter_after_irq(void); extern void rcu_user_exit_after_irq(void); -extern void rcu_user_hooks_switch(struct task_struct *prev, - struct task_struct *next); #else static inline void rcu_user_enter(void) { } static inline void rcu_user_exit(void) { } -- cgit v1.2.3 From ce43b03e8889475817d427b1f3724c7e294b76eb Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 30 Nov 2012 09:49:27 +0000 Subject: net: move inet_dport/inet_num in sock_common commit 68835aba4d9b (net: optimize INET input path further) moved some fields used for tcp/udp sockets lookup in the first cache line of struct sock_common. This patch moves inet_dport/inet_num as well, filling a 32bit hole on 64 bit arches and reducing number of cache line misses in lookups. Also change INET_MATCH()/INET_TW_MATCH() to perform the ports match before addresses match, as this check is more discriminant. Remove the hash check from MATCH() macros because we dont need to re validate the hash value after taking a refcount on socket, and use likely/unlikely compiler hints, as the sk_hash/hash check makes the following conditional tests 100% predicted by cpu. Introduce skc_addrpair/skc_portpair pair values to better document the alignment requirements of the port/addr pairs used in the various MATCH() macros, and remove some casts. The namespace check can also be done at last. This slightly improves TCP/UDP lookup times. IP/TCP early demux needs inet->rx_dst_ifindex and TCP needs inet->min_ttl, lets group them together in same cache line. With help from Ben Hutchings & Joe Perches. Idea of this patch came after Ling Ma proposal to move skc_hash to the beginning of struct sock_common, and should allow him to submit a final version of his patch. My tests show an improvement doing so. Signed-off-by: Eric Dumazet Cc: Ben Hutchings Cc: Joe Perches Cc: Ling Ma Signed-off-by: David S. Miller --- include/linux/ipv6.h | 32 +++++++++++++++++--------------- 1 file changed, 17 insertions(+), 15 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h index 5e11905a4f01..12729e966dc9 100644 --- a/include/linux/ipv6.h +++ b/include/linux/ipv6.h @@ -364,20 +364,22 @@ static inline struct raw6_sock *raw6_sk(const struct sock *sk) #define inet_v6_ipv6only(__sk) 0 #endif /* IS_ENABLED(CONFIG_IPV6) */ -#define INET6_MATCH(__sk, __net, __hash, __saddr, __daddr, __ports, __dif)\ - (((__sk)->sk_hash == (__hash)) && sock_net((__sk)) == (__net) && \ - ((*((__portpair *)&(inet_sk(__sk)->inet_dport))) == (__ports)) && \ - ((__sk)->sk_family == AF_INET6) && \ - ipv6_addr_equal(&inet6_sk(__sk)->daddr, (__saddr)) && \ - ipv6_addr_equal(&inet6_sk(__sk)->rcv_saddr, (__daddr)) && \ - (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif)))) - -#define INET6_TW_MATCH(__sk, __net, __hash, __saddr, __daddr, __ports, __dif) \ - (((__sk)->sk_hash == (__hash)) && sock_net((__sk)) == (__net) && \ - (*((__portpair *)&(inet_twsk(__sk)->tw_dport)) == (__ports)) && \ - ((__sk)->sk_family == PF_INET6) && \ - (ipv6_addr_equal(&inet6_twsk(__sk)->tw_v6_daddr, (__saddr))) && \ - (ipv6_addr_equal(&inet6_twsk(__sk)->tw_v6_rcv_saddr, (__daddr))) && \ - (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif)))) +#define INET6_MATCH(__sk, __net, __saddr, __daddr, __ports, __dif) \ + ((inet_sk(__sk)->inet_portpair == (__ports)) && \ + ((__sk)->sk_family == AF_INET6) && \ + ipv6_addr_equal(&inet6_sk(__sk)->daddr, (__saddr)) && \ + ipv6_addr_equal(&inet6_sk(__sk)->rcv_saddr, (__daddr)) && \ + (!(__sk)->sk_bound_dev_if || \ + ((__sk)->sk_bound_dev_if == (__dif))) && \ + net_eq(sock_net(__sk), (__net))) + +#define INET6_TW_MATCH(__sk, __net, __saddr, __daddr, __ports, __dif) \ + ((inet_twsk(__sk)->tw_portpair == (__ports)) && \ + ((__sk)->sk_family == AF_INET6) && \ + ipv6_addr_equal(&inet6_twsk(__sk)->tw_v6_daddr, (__saddr)) && \ + ipv6_addr_equal(&inet6_twsk(__sk)->tw_v6_rcv_saddr, (__daddr)) && \ + (!(__sk)->sk_bound_dev_if || \ + ((__sk)->sk_bound_dev_if == (__dif))) && \ + net_eq(sock_net(__sk), (__net))) #endif /* _IPV6_H */ -- cgit v1.2.3 From 78d86c213f28193082b5d8a1a424044b7ba406f1 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 29 Nov 2012 10:43:28 -0800 Subject: init.h: Remove __dev* sections from the kernel With the recent work to remove CONFIG_HOTPLUG, we are starting to get a bunch of __devinit section warnings, despite CONFIG_HOTPLUG always being enabled. So, stop marking the sections entirely, by defining them away the section markings in init.h Acked-by: Sam Ravnborg Signed-off-by: Greg Kroah-Hartman --- include/linux/init.h | 18 +++++++----------- 1 file changed, 7 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/init.h b/include/linux/init.h index e59041e21df3..f63692d6902e 100644 --- a/include/linux/init.h +++ b/include/linux/init.h @@ -93,13 +93,13 @@ #define __exit __section(.exit.text) __exitused __cold notrace -/* Used for HOTPLUG */ -#define __devinit __section(.devinit.text) __cold notrace -#define __devinitdata __section(.devinit.data) -#define __devinitconst __constsection(.devinit.rodata) -#define __devexit __section(.devexit.text) __exitused __cold notrace -#define __devexitdata __section(.devexit.data) -#define __devexitconst __constsection(.devexit.rodata) +/* Used for HOTPLUG, but that is always enabled now, so just make them noops */ +#define __devinit +#define __devinitdata +#define __devinitconst +#define __devexit +#define __devexitdata +#define __devexitconst /* Used for HOTPLUG_CPU */ #define __cpuinit __section(.cpuinit.text) __cold notrace @@ -126,10 +126,6 @@ #define __INITRODATA .section ".init.rodata","a",%progbits #define __FINITDATA .previous -#define __DEVINIT .section ".devinit.text", "ax" -#define __DEVINITDATA .section ".devinit.data", "aw" -#define __DEVINITRODATA .section ".devinit.rodata", "a" - #define __CPUINIT .section ".cpuinit.text", "ax" #define __CPUINITDATA .section ".cpuinit.data", "aw" #define __CPUINITRODATA .section ".cpuinit.rodata", "a" -- cgit v1.2.3 From 78ad724ade23c66650dcaba04f4d2307c2884c69 Mon Sep 17 00:00:00 2001 From: Sreekanth Reddy Date: Fri, 30 Nov 2012 07:58:10 +0530 Subject: [SCSI] miscdevice: Adding support for MPT3SAS_MINOR(222) Signed-off-by: Sreekanth Reddy Reviewed-by: Nagalakshmi Nandigama Signed-off-by: James Bottomley --- include/linux/miscdevice.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h index e0deeb2cc939..09c2300ddb37 100644 --- a/include/linux/miscdevice.h +++ b/include/linux/miscdevice.h @@ -34,6 +34,7 @@ #define MWAVE_MINOR 219 /* ACP/Mwave Modem */ #define MPT_MINOR 220 #define MPT2SAS_MINOR 221 +#define MPT3SAS_MINOR 222 #define UINPUT_MINOR 223 #define MISC_MCELOG_MINOR 227 #define HPET_MINOR 228 -- cgit v1.2.3 From c971f08cba56ed17fe22040ca5ff97fe5c3f0bd7 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Wed, 28 Nov 2012 00:03:11 +0000 Subject: atm: add release_cb() callback to vcc MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The immediate use case for this is that it will allow us to ensure that a pppoatm queue is woken after it has to drop a packet due to the sock being locked. Note that 'release_cb' is called when the socket is *unlocked*. This is not to be confused with vcc_release() — which probably ought to be called vcc_close(). Signed-off-by: David Woodhouse Acked-by: Krzysztof Mazur --- include/linux/atmdev.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/atmdev.h b/include/linux/atmdev.h index 72db2af902a8..c1da539f5e28 100644 --- a/include/linux/atmdev.h +++ b/include/linux/atmdev.h @@ -99,6 +99,7 @@ struct atm_vcc { struct atm_dev *dev; /* device back pointer */ struct atm_qos qos; /* QOS */ struct atm_sap sap; /* SAP */ + void (*release_cb)(struct atm_vcc *vcc); /* release_sock callback */ void (*push)(struct atm_vcc *vcc,struct sk_buff *skb); void (*pop)(struct atm_vcc *vcc,struct sk_buff *skb); /* optional */ int (*push_oam)(struct atm_vcc *vcc,void *cell); -- cgit v1.2.3 From cbdbf2abb7844548a7d7a6a2ae7af6b6fbcea401 Mon Sep 17 00:00:00 2001 From: James Hogan Date: Fri, 23 Nov 2012 12:08:15 +0000 Subject: linux/kernel.h: define SYMBOL_PREFIX Define SYMBOL_PREFIX to be the same as CONFIG_SYMBOL_PREFIX if set by the architecture, or "" otherwise. This avoids the need for ugly #ifdefs whenever symbols are referenced in asm blocks. Signed-off-by: James Hogan Cc: Andrew Morton Cc: Joe Perches Cc: Paul Gortmaker Cc: Jean Delvare Cc: Ralf Baechle Cc: Mike Frysinger Signed-off-by: Rusty Russell --- include/linux/kernel.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index a123b13b70fd..7d8dfc7392f1 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -701,6 +701,13 @@ static inline void ftrace_dump(enum ftrace_dump_mode oops_dump_mode) { } #define COMPACTION_BUILD 0 #endif +/* This helps us to avoid #ifdef CONFIG_SYMBOL_PREFIX */ +#ifdef CONFIG_SYMBOL_PREFIX +#define SYMBOL_PREFIX CONFIG_SYMBOL_PREFIX +#else +#define SYMBOL_PREFIX "" +#endif + /* Rebuild everything on CONFIG_FTRACE_MCOUNT_RECORD */ #ifdef CONFIG_FTRACE_MCOUNT_RECORD # define REBUILD_DUE_TO_FTRACE_MCOUNT_RECORD -- cgit v1.2.3 From 0d0cdb028f9d9771e2b346038707734121f906e3 Mon Sep 17 00:00:00 2001 From: Aaron Lu Date: Mon, 26 Nov 2012 13:55:25 +0800 Subject: libata: restore acpi disable functionality Commit 66fa7f215 "libata-acpi: improve ACPI disabling" introdcued the behaviour of disabling ATA ACPI if ata_acpi_on_devcfg failed the 2nd time, but commit 30dcf76ac dropped this behaviour and this caused problem for Dimitris Damigos, where his laptop can not resume correctly. The bugzilla page for it is: https://bugzilla.kernel.org/show_bug.cgi?id=49331 The problem is, ata_dev_push_id will fail the 2nd time it is invoked, and due to disabling ACPI code is dropped, ata_acpi_on_devcfg which calls ata_dev_push_id will keep failing and eventually made the device disabled. This patch restores the original behaviour, if acpi failed the 2nd time, disable acpi functionality for the device(and we do not event need to add a debug message for this as it is still there ;-). Reported-by: Dimitris Damigos Signed-off-by: Aaron Lu Cc: Signed-off-by: Jeff Garzik --- include/linux/libata.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index 77eeeda2b6e2..e931c9ad1078 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -163,6 +163,7 @@ enum { ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */ ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */ + ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */ ATA_DEV_UNKNOWN = 0, /* unknown device */ ATA_DEV_ATA = 1, /* ATA device */ -- cgit v1.2.3 From de90cd71f68e947d3bd6c3f2ef5731ead010a768 Mon Sep 17 00:00:00 2001 From: Shane Huang Date: Sun, 18 Nov 2012 04:44:41 +0800 Subject: libata: check SATA_SETTINGS log with HW Feature Ctrl NCQ capability was used to check availability of SATA Settings page from Identify Device Data Log, which contains DevSlp timing variables. It does not work on some HDDs and leads to error messages. IDENTIFY word 78 bit 5(Hardware Feature Control) should be used. Quoting SATA spec 3.1: If Hardware Feature Control is supported, then: a) IDENTIFY DEVICE data word 78 bit 5 (see 13.2.1.18) shall be set to one; b) the SET FEATURES Select Hardware Feature Control subcommand shall be supported (see 13.3.8); c) page 08h of the Identify Device Data log (see 13.7.7) shall be supported; This patch is not tested on SATA HDD with DevSlp supported. Reported-by: Borislav Petkov Signed-off-by: Shane Huang Signed-off-by: Jeff Garzik --- include/linux/ata.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/ata.h b/include/linux/ata.h index 408da9502177..18cbb93fdbca 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -593,6 +593,7 @@ static inline int ata_is_data(u8 prot) #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20) #define ata_id_has_da(id) ((id)[ATA_ID_SATA_CAPABILITY_2] & (1 << 4)) #define ata_id_has_devslp(id) ((id)[ATA_ID_FEATURE_SUPP] & (1 << 8)) +#define ata_id_has_hw_feature_ctrl(id) ((id)[ATA_ID_FEATURE_SUPP] & (1 << 5)) static inline bool ata_id_has_hipm(const u16 *id) { -- cgit v1.2.3 From b7db04d9264fca4b00e949da7b3180c50e243fca Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Fri, 2 Nov 2012 12:29:32 -0700 Subject: libata: implement ata_platform_remove_one() This relatively simple boiler-plate code is repeated in several platform drivers. We should implement a common version in libata. Signed-off-by: Brian Norris Signed-off-by: Jeff Garzik --- include/linux/libata.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index e931c9ad1078..83ba0ab2c915 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1115,6 +1115,10 @@ extern int ata_pci_device_resume(struct pci_dev *pdev); #endif /* CONFIG_PM */ #endif /* CONFIG_PCI */ +struct platform_device; + +extern int ata_platform_remove_one(struct platform_device *pdev); + /* * ACPI - drivers/ata/libata-acpi.c */ -- cgit v1.2.3 From 156f34d26a74c6ea060fb43d898f17509ed8e18a Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Fri, 2 Nov 2012 00:46:24 -0700 Subject: pata_platform: remove unused remove function All users of __pata_platform_remove() have been converted to utilize the common ata_platform_remove_one(). Signed-off-by: Brian Norris Signed-off-by: Jeff Garzik --- include/linux/ata_platform.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ata_platform.h b/include/linux/ata_platform.h index b856a2a590d9..fe9989636b62 100644 --- a/include/linux/ata_platform.h +++ b/include/linux/ata_platform.h @@ -22,8 +22,6 @@ extern int __devinit __pata_platform_probe(struct device *dev, unsigned int ioport_shift, int __pio_mask); -extern int __devexit __pata_platform_remove(struct device *dev); - /* * Marvell SATA private data */ -- cgit v1.2.3 From 3ad909bc8f2ea32fd7d24266c61cd4605feecec8 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 30 Nov 2012 16:30:43 +0100 Subject: ARM: 7588/1: amba: create a resource parent registrator This creates amba_apb_device_add_res() and amba_ahb_device_add_res() respectively, to add devices with another parent than iomem_resource. This is needed to specify that a device is contained in a specific IO range. Signed-off-by: Linus Walleij Signed-off-by: Russell King --- include/linux/amba/bus.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h index d36417158d8f..43ec7e247a80 100644 --- a/include/linux/amba/bus.h +++ b/include/linux/amba/bus.h @@ -71,6 +71,16 @@ struct amba_device *amba_ahb_device_add(struct device *parent, const char *name, resource_size_t base, size_t size, int irq1, int irq2, void *pdata, unsigned int periphid); +struct amba_device * +amba_apb_device_add_res(struct device *parent, const char *name, + resource_size_t base, size_t size, int irq1, + int irq2, void *pdata, unsigned int periphid, + struct resource *resbase); +struct amba_device * +amba_ahb_device_add_res(struct device *parent, const char *name, + resource_size_t base, size_t size, int irq1, + int irq2, void *pdata, unsigned int periphid, + struct resource *resbase); void amba_device_unregister(struct amba_device *); struct amba_device *amba_find_device(const char *, struct device *, unsigned int, unsigned int); int amba_request_regions(struct amba_device *, const char *); -- cgit v1.2.3 From 64b37b2a63eb2f80b65c7185f0013f8ffc637ae3 Mon Sep 17 00:00:00 2001 From: Matthieu CASTET Date: Tue, 6 Nov 2012 11:51:44 +0100 Subject: mtd: nand: add NAND_BUSWIDTH_AUTO to autodetect bus width The driver call nand_scan_ident in 8 bit mode, then readid or onfi detection are done (and detect bus width). The driver should update its bus width before calling nand_scan_tail. This work because readid and onfi are read work 8 byte mode. Note that nand_scan_ident send command (NAND_CMD_RESET, NAND_CMD_READID, NAND_CMD_PARAM), address and read data The ONFI specificication is not very clear for x16 device if high byte of address should be driven to 0, but according to [1] it should be ok to not drive it during autodetection. [1] 3.3.2. Target Initialization [...] The Read ID and Read Parameter Page commands only use the lower 8-bits of the data bus. The host shall not issue commands that use a word data width on x16 devices until the host determines the device supports a 16-bit data bus width in the parameter page. Signed-off-by: Matthieu CASTET Signed-off-by: Artem Bityutskiy --- include/linux/mtd/nand.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 9d8a6048aacd..7ccb3c59ed60 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -219,6 +219,13 @@ typedef enum { #define NAND_OWN_BUFFERS 0x00020000 /* Chip may not exist, so silence any errors in scan */ #define NAND_SCAN_SILENT_NODEV 0x00040000 +/* + * Autodetect nand buswidth with readid/onfi. + * This suppose the driver will configure the hardware in 8 bits mode + * when calling nand_scan_ident, and update its configuration + * before calling nand_scan_tail. + */ +#define NAND_BUSWIDTH_AUTO 0x00080000 /* Options set by nand scan */ /* Nand scan has allocated controller struct */ -- cgit v1.2.3 From 72b15b6ae97796c5fac687addde5dbfab872cf94 Mon Sep 17 00:00:00 2001 From: Omar Ramirez Luna Date: Mon, 19 Nov 2012 19:05:50 -0600 Subject: iommu/omap: Migrate to hwmod framework Use hwmod data and device attributes to build and register an omap device for iommu driver. - Update the naming convention in isp module. - Remove unneeded check for number of resources, as this is now handled by omap_device and prevents driver from loading. - Now unused, remove platform device and resource data, handling of sysconfig register for softreset purposes, use default latency structure. - Use hwmod API for reset handling. Signed-off-by: Omar Ramirez Luna Tested-by: Ohad Ben-Cohen Signed-off-by: Joerg Roedel --- include/linux/platform_data/iommu-omap.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/iommu-omap.h b/include/linux/platform_data/iommu-omap.h index c677b9f2fefa..ef2060d7eeb8 100644 --- a/include/linux/platform_data/iommu-omap.h +++ b/include/linux/platform_data/iommu-omap.h @@ -10,6 +10,8 @@ * published by the Free Software Foundation. */ +#include + #define MMU_REG_SIZE 256 /** @@ -43,7 +45,11 @@ struct omap_mmu_dev_attr { struct iommu_platform_data { const char *name; const char *clk_name; - const int nr_tlb_entries; + const char *reset_name; + int nr_tlb_entries; u32 da_start; u32 da_end; + + int (*assert_reset)(struct platform_device *pdev, const char *name); + int (*deassert_reset)(struct platform_device *pdev, const char *name); }; -- cgit v1.2.3 From ebf7cda0f92effd8169b831fae81e9437dce1fef Mon Sep 17 00:00:00 2001 From: Omar Ramirez Luna Date: Mon, 19 Nov 2012 19:05:51 -0600 Subject: iommu/omap: Adapt to runtime pm Use runtime PM functionality interfaced with hwmod enable/idle functions, to replace direct clock operations and sysconfig handling. Due to reset sequence, pm_runtime_[get|put]_sync must be used, to avoid possible operations with the module under reset. Because of this and given that the driver uses spin_locks to protect their critical sections, we must use pm_runtime_irq_safe in order for the runtime ops to be happy, otherwise might_sleep_if checks in runtime framework will complain. The remaining pm_runtime out of iommu_enable and iommu_disable corresponds to paths that can be accessed through debugfs, some of them doesn't work if the module is not enabled first, but in future if the mmu is idled withouth freeing, these are needed to debug. Signed-off-by: Omar Ramirez Luna Tested-by: Ohad Ben-Cohen Acked-by: Tony Lindgren Signed-off-by: Joerg Roedel --- include/linux/platform_data/iommu-omap.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/iommu-omap.h b/include/linux/platform_data/iommu-omap.h index ef2060d7eeb8..5b429c43a297 100644 --- a/include/linux/platform_data/iommu-omap.h +++ b/include/linux/platform_data/iommu-omap.h @@ -44,7 +44,6 @@ struct omap_mmu_dev_attr { struct iommu_platform_data { const char *name; - const char *clk_name; const char *reset_name; int nr_tlb_entries; u32 da_start; -- cgit v1.2.3 From cc248d4b1ddf05fefc1373d9d7a4dd1df71b6190 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Mon, 3 Dec 2012 16:11:13 -0500 Subject: svcrpc: don't byte-swap sk_reclen in place Byte-swapping in place is always a little dubious. Let's instead define this field to always be big-endian, and do the swapping on demand where we need it. Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/svcsock.h | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svcsock.h b/include/linux/sunrpc/svcsock.h index 92ad02f0dcc0..613cf42227aa 100644 --- a/include/linux/sunrpc/svcsock.h +++ b/include/linux/sunrpc/svcsock.h @@ -26,11 +26,21 @@ struct svc_sock { void (*sk_owspace)(struct sock *); /* private TCP part */ - u32 sk_reclen; /* length of record */ + __be32 sk_reclen; /* length of record */ u32 sk_tcplen; /* current read length */ struct page * sk_pages[RPCSVC_MAXPAGES]; /* received data */ }; +static inline u32 svc_sock_reclen(struct svc_sock *svsk) +{ + return ntohl(svsk->sk_reclen) & RPC_FRAGMENT_SIZE_MASK; +} + +static inline u32 svc_sock_final_rec(struct svc_sock *svsk) +{ + return ntohl(svsk->sk_reclen) & RPC_LAST_STREAM_FRAGMENT; +} + /* * Function prototypes. */ -- cgit v1.2.3 From 8af345f58ac9b350bb23c1457c613381d9f00472 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Mon, 3 Dec 2012 16:45:35 -0500 Subject: svcrpc: track rpc data length separately from sk_tcplen Keep a separate field, sk_datalen, that tracks only the data contained in a fragment, not including the fragment header. For now, this is always just max(0, sk_tcplen - 4), but after we allow multiple fragments sk_datalen will accumulate the total rpc data size while sk_tcplen only tracks progress receiving the current fragment. Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/svcsock.h | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svcsock.h b/include/linux/sunrpc/svcsock.h index 613cf42227aa..62fd1b756e99 100644 --- a/include/linux/sunrpc/svcsock.h +++ b/include/linux/sunrpc/svcsock.h @@ -26,8 +26,15 @@ struct svc_sock { void (*sk_owspace)(struct sock *); /* private TCP part */ - __be32 sk_reclen; /* length of record */ - u32 sk_tcplen; /* current read length */ + /* On-the-wire fragment header: */ + __be32 sk_reclen; + /* As we receive a record, this includes the length received so + * far (including the fragment header): */ + u32 sk_tcplen; + /* Total length of the data (not including fragment headers) + * received so far in the fragments making up this rpc: */ + u32 sk_datalen; + struct page * sk_pages[RPCSVC_MAXPAGES]; /* received data */ }; -- cgit v1.2.3 From d67b8c616b48df30e2836d797795f2420d109bc9 Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Tue, 4 Dec 2012 01:13:35 +0000 Subject: netconf: advertise mc_forwarding status This patch advertise the MC_FORWARDING status for IPv4 and IPv6. This field is readonly, only multicast engine in the kernel updates it. Signed-off-by: Nicolas Dichtel Signed-off-by: David S. Miller --- include/linux/inetdevice.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h index d032780d0ce5..a9d828976a77 100644 --- a/include/linux/inetdevice.h +++ b/include/linux/inetdevice.h @@ -171,6 +171,9 @@ struct in_ifaddr { extern int register_inetaddr_notifier(struct notifier_block *nb); extern int unregister_inetaddr_notifier(struct notifier_block *nb); +extern void inet_netconf_notify_devconf(struct net *net, int type, int ifindex, + struct ipv4_devconf *devconf); + extern struct net_device *__ip_dev_find(struct net *net, __be32 addr, bool devref); static inline struct net_device *ip_dev_find(struct net *net, __be32 addr) { -- cgit v1.2.3 From d71f2f88825b31553881944959962b1871099e1f Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 5 Dec 2012 11:59:22 +0100 Subject: ACPI / PM: Fix header of acpi_dev_pm_detach() in acpi.h The header of acpi_dev_pm_detach() in include/linux/acpi.h has an incorrect return type, which should be void. Fix that. Signed-off-by: Rafael J. Wysocki --- include/linux/acpi.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 28ba643c92c1..79345cd5ac20 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -459,7 +459,7 @@ static inline int acpi_subsys_resume_early(struct device *dev) { return 0; } #if defined(CONFIG_ACPI) && defined(CONFIG_PM) int acpi_dev_pm_attach(struct device *dev, bool power_on); -int acpi_dev_pm_detach(struct device *dev, bool power_off); +void acpi_dev_pm_detach(struct device *dev, bool power_off); #else static inline int acpi_dev_pm_attach(struct device *dev, bool power_on) { -- cgit v1.2.3 From 01f218803757c9ec1152ac2fd39d03c27c452634 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Wed, 17 Oct 2012 18:06:02 +0200 Subject: kvm: add kvm_set_irq_inatomic Add an API to inject IRQ from atomic context. Return EWOULDBLOCK if impossible (e.g. for multicast). Only MSI is supported ATM. Signed-off-by: Michael S. Tsirkin Signed-off-by: Gleb Natapov --- include/linux/kvm_host.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 8e5c7b651655..36c3704bfa7c 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -693,6 +693,7 @@ void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic, unsigned long *deliver_bitmask); #endif int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level); +int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level); int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, int irq_source_id, int level); void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); -- cgit v1.2.3 From 46d784629202c5da9be8d727988e7083fb455bf8 Mon Sep 17 00:00:00 2001 From: Vivien Didelot Date: Wed, 3 Oct 2012 16:54:07 -0400 Subject: hwmon: (ads7828) driver cleanup As there is no reliable way to identify the chip, it is preferable to remove the detect callback, to avoid misdetection. Module parameters are not worth it here, so let's get rid of them and add an ads7828_platform_data structure instead. Clean the code by removing unused macros, fixing coding style issues, avoiding function prototypes and using convenient macros such as module_i2c_driver(). Signed-off-by: Vivien Didelot Signed-off-by: Guenter Roeck --- include/linux/platform_data/ads7828.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 include/linux/platform_data/ads7828.h (limited to 'include/linux') diff --git a/include/linux/platform_data/ads7828.h b/include/linux/platform_data/ads7828.h new file mode 100644 index 000000000000..3245f45f9d77 --- /dev/null +++ b/include/linux/platform_data/ads7828.h @@ -0,0 +1,29 @@ +/* + * TI ADS7828 A/D Converter platform data definition + * + * Copyright (c) 2012 Savoir-faire Linux Inc. + * Vivien Didelot + * + * For further information, see the Documentation/hwmon/ads7828 file. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _PDATA_ADS7828_H +#define _PDATA_ADS7828_H + +/** + * struct ads7828_platform_data - optional ADS7828 connectivity info + * @diff_input: Differential input mode. + * @ext_vref: Use an external voltage reference. + * @vref_mv: Voltage reference value, if external. + */ +struct ads7828_platform_data { + bool diff_input; + bool ext_vref; + unsigned int vref_mv; +}; + +#endif /* _PDATA_ADS7828_H */ -- cgit v1.2.3 From 8fa72d234da9b6b473bbb1f74d533663e4996e6b Mon Sep 17 00:00:00 2001 From: Jeff Moyer Date: Wed, 5 Dec 2012 20:17:21 +0100 Subject: bdi: add a user-tunable cpu_list for the bdi flusher threads In realtime environments, it may be desirable to keep the per-bdi flusher threads from running on certain cpus. This patch adds a cpu_list file to /sys/class/bdi/* to enable this. The default is to tie the flusher threads to the same numa node as the backing device (though I could be convinced to make it a mask of all cpus to avoid a change in behaviour). Thanks to Jeremy Eder for the original idea. Signed-off-by: Jeff Moyer Signed-off-by: Jens Axboe --- include/linux/backing-dev.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 2a9a9abc9126..238521a19849 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -18,6 +18,7 @@ #include #include #include +#include struct page; struct device; @@ -105,6 +106,9 @@ struct backing_dev_info { struct timer_list laptop_mode_wb_timer; + cpumask_t *flusher_cpumask; /* used for writeback thread scheduling */ + struct mutex flusher_cpumask_lock; + #ifdef CONFIG_DEBUG_FS struct dentry *debug_dir; struct dentry *debug_stats; -- cgit v1.2.3 From dd5fc854de5fd37adfcef8a366cd21a55aa01d3d Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Wed, 5 Dec 2012 14:33:26 -0700 Subject: EFI: Stash ROMs if they're not in the PCI BAR EFI provides support for providing PCI ROMs via means other than the ROM BAR. This support vanishes after we've exited boot services, so add support for stashing copies of the ROMs in setup_data if they're not otherwise available. Signed-off-by: Matthew Garrett Signed-off-by: Bjorn Helgaas Tested-by: Seth Forshee --- include/linux/efi.h | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) (limited to 'include/linux') diff --git a/include/linux/efi.h b/include/linux/efi.h index 8670eb1eb8cd..8eb1be17c801 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -196,6 +196,77 @@ typedef struct { void *create_event_ex; } efi_boot_services_t; +typedef enum { + EfiPciIoWidthUint8, + EfiPciIoWidthUint16, + EfiPciIoWidthUint32, + EfiPciIoWidthUint64, + EfiPciIoWidthFifoUint8, + EfiPciIoWidthFifoUint16, + EfiPciIoWidthFifoUint32, + EfiPciIoWidthFifoUint64, + EfiPciIoWidthFillUint8, + EfiPciIoWidthFillUint16, + EfiPciIoWidthFillUint32, + EfiPciIoWidthFillUint64, + EfiPciIoWidthMaximum +} EFI_PCI_IO_PROTOCOL_WIDTH; + +typedef enum { + EfiPciIoAttributeOperationGet, + EfiPciIoAttributeOperationSet, + EfiPciIoAttributeOperationEnable, + EfiPciIoAttributeOperationDisable, + EfiPciIoAttributeOperationSupported, + EfiPciIoAttributeOperationMaximum +} EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION; + + +typedef struct { + void *read; + void *write; +} efi_pci_io_protocol_access_t; + +typedef struct { + void *poll_mem; + void *poll_io; + efi_pci_io_protocol_access_t mem; + efi_pci_io_protocol_access_t io; + efi_pci_io_protocol_access_t pci; + void *copy_mem; + void *map; + void *unmap; + void *allocate_buffer; + void *free_buffer; + void *flush; + void *get_location; + void *attributes; + void *get_bar_attributes; + void *set_bar_attributes; + uint64_t romsize; + void *romimage; +} efi_pci_io_protocol; + +#define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001 +#define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002 +#define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004 +#define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008 +#define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010 +#define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020 +#define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040 +#define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080 +#define EFI_PCI_IO_ATTRIBUTE_IO 0x0100 +#define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200 +#define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400 +#define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800 +#define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000 +#define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000 +#define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000 +#define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000 +#define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000 +#define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000 +#define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000 + /* * Types and defines for EFI ResetSystem */ -- cgit v1.2.3 From eca0d4676d8e29c209ddce0c0c1755472ffc70a6 Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Wed, 5 Dec 2012 14:33:27 -0700 Subject: PCI: Add pcibios_add_device Platforms may want to provide architecture-specific functionality during PCI enumeration. Add a pcibios_add_device() call that architectures can override to do so. Signed-off-by: Matthew Garrett Signed-off-by: Bjorn Helgaas Tested-by: Seth Forshee --- include/linux/pci.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index ee2179546c63..195c2593bd31 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1592,6 +1592,7 @@ void pcibios_disable_device(struct pci_dev *dev); void pcibios_set_master(struct pci_dev *dev); int pcibios_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state); +int pcibios_add_device(struct pci_dev *dev); #ifdef CONFIG_PCI_MMCONFIG extern void __init pci_mmcfg_early_init(void); -- cgit v1.2.3 From 84c1b80e32638f881c17390dfe88143e5cd3f583 Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Wed, 5 Dec 2012 14:33:27 -0700 Subject: PCI: Add support for non-BAR ROMs Platforms may provide their own mechanisms for obtaining ROMs. Add support for using data provided by the platform in that case. Signed-off-by: Matthew Garrett Signed-off-by: Bjorn Helgaas Tested-by: Seth Forshee --- include/linux/pci.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 195c2593bd31..f116b2d859dc 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -333,6 +333,8 @@ struct pci_dev { }; struct pci_ats *ats; /* Address Translation Service */ #endif + void *rom; /* Physical pointer to ROM if it's not from the BAR */ + size_t romlen; /* Length of ROM if it's not from the BAR */ }; static inline struct pci_dev *pci_physfn(struct pci_dev *dev) -- cgit v1.2.3 From 161b96c383c442f4d7dabbb8500a5fbd551b344d Mon Sep 17 00:00:00 2001 From: Alexander Shiyan Date: Wed, 7 Nov 2012 21:30:29 +0400 Subject: spi/clps711x: New SPI master driver This patch add new driver for CLPS711X SPI master controller. Due to platform limitations driver supports only 8 bit transfer mode. Chip select control is handled via GPIO. Signed-off-by: Alexander Shiyan Acked-by: Arnd Bergmann Signed-off-by: Grant Likely --- include/linux/platform_data/spi-clps711x.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 include/linux/platform_data/spi-clps711x.h (limited to 'include/linux') diff --git a/include/linux/platform_data/spi-clps711x.h b/include/linux/platform_data/spi-clps711x.h new file mode 100644 index 000000000000..301956e63143 --- /dev/null +++ b/include/linux/platform_data/spi-clps711x.h @@ -0,0 +1,21 @@ +/* + * CLPS711X SPI bus driver definitions + * + * Copyright (C) 2012 Alexander Shiyan + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef ____LINUX_PLATFORM_DATA_SPI_CLPS711X_H +#define ____LINUX_PLATFORM_DATA_SPI_CLPS711X_H + +/* Board specific platform_data */ +struct spi_clps711x_pdata { + int *chipselect; /* Array of GPIO-numbers */ + int num_chipselect; /* Total count of GPIOs */ +}; + +#endif -- cgit v1.2.3 From 464ee9f966404786ba4c6be35dc8362ee8e6ba4e Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Nov 2012 12:49:27 -0500 Subject: NFSv4.1: Ensure that the client tracks the server target_highest_slotid Dynamic slot allocation in NFSv4.1 depends on the client being able to track the server's target value for the highest slotid in the slot table. See the reference in Section 2.10.6.1 of RFC5661. To avoid ordering problems in the case where 2 SEQUENCE replies contain conflicting updates to this target value, we also introduce a generation counter, to track whether or not an RPC containing a SEQUENCE operation was launched before or after the last update. Also rename the nfs4_slot_table target_max_slots field to 'target_highest_slotid' to avoid confusion with a slot table size or number of slots. Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 5 +++-- include/linux/nfs_xdr.h | 2 ++ 2 files changed, 5 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index b0412873d29c..57d406997def 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -217,8 +217,9 @@ struct nfs4_slot_table { u32 max_slots; /* # slots in table */ u32 highest_used_slotid; /* sent to server on each SEQ. * op for dynamic resizing */ - u32 target_max_slots; /* Set by CB_RECALL_SLOT as - * the new max_slots */ + u32 target_highest_slotid; /* Server max_slot target */ + unsigned long generation; /* Generation counter for + target_highest_slotid */ struct completion complete; }; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index deb31bbbb857..08c47db7417f 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -188,6 +188,7 @@ struct nfs4_channel_attrs { /* nfs41 sessions slot seqid */ struct nfs4_slot { struct nfs4_slot_table *table; + unsigned long generation; unsigned long renewal_time; u32 slot_nr; u32 seq_nr; @@ -202,6 +203,7 @@ struct nfs4_sequence_res { struct nfs4_slot *sr_slot; /* slot used to send request */ int sr_status; /* sequence operation status */ u32 sr_status_flags; + u32 sr_target_highest_slotid; }; struct nfs4_get_lease_time_args { -- cgit v1.2.3 From da0507b7c95ccd4d9c86394eef42fe076032af30 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Nov 2012 18:10:30 -0500 Subject: NFSv4.1: Reset the sequence number for slots that have been deallocated When the server tells us that it is dynamically resizing the session replay cache, we should reset the sequence number for those slots that have been deallocated. Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 1 + include/linux/nfs_xdr.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 57d406997def..646e64bbff4c 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -218,6 +218,7 @@ struct nfs4_slot_table { u32 highest_used_slotid; /* sent to server on each SEQ. * op for dynamic resizing */ u32 target_highest_slotid; /* Server max_slot target */ + u32 server_highest_slotid; /* Server highest slotid */ unsigned long generation; /* Generation counter for target_highest_slotid */ struct completion complete; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 08c47db7417f..3ddb08fba935 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -203,6 +203,7 @@ struct nfs4_sequence_res { struct nfs4_slot *sr_slot; /* slot used to send request */ int sr_status; /* sequence operation status */ u32 sr_status_flags; + u32 sr_highest_slotid; u32 sr_target_highest_slotid; }; -- cgit v1.2.3 From 97e548a93de213b149eea025a97d88e28143b445 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Nov 2012 14:45:48 -0500 Subject: NFSv4.1: Support dynamic resizing of the session slot table Allow the server to control the size of the session slot table by adjusting the value of sr_target_max_slots in the reply to the SEQUENCE operation. Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 646e64bbff4c..30715508fade 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -215,6 +215,7 @@ struct nfs4_slot_table { spinlock_t slot_tbl_lock; struct rpc_wait_queue slot_tbl_waitq; /* allocators may wait here */ u32 max_slots; /* # slots in table */ + u32 max_slotid; /* Max allowed slotid value */ u32 highest_used_slotid; /* sent to server on each SEQ. * op for dynamic resizing */ u32 target_highest_slotid; /* Server max_slot target */ -- cgit v1.2.3 From 87dda67e7386ba7d2164391ea58b34e028d8157b Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Nov 2012 19:49:20 -0500 Subject: NFSv4.1: Allow SEQUENCE to resize the slot table on the fly Instead of an array of slots, use a singly linked list of slots that can be dynamically appended to or shrunk. Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 3ddb08fba935..44d256f6021c 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -188,6 +188,7 @@ struct nfs4_channel_attrs { /* nfs41 sessions slot seqid */ struct nfs4_slot { struct nfs4_slot_table *table; + struct nfs4_slot *next; unsigned long generation; unsigned long renewal_time; u32 slot_nr; -- cgit v1.2.3 From c34309a45ea491e5f0c0d0af49ccfa018ff35fc1 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 26 Nov 2012 14:33:03 -0500 Subject: NFS: Remove unused function slot_idx Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 30715508fade..e707c1b69796 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -225,11 +225,6 @@ struct nfs4_slot_table { struct completion complete; }; -static inline int slot_idx(struct nfs4_slot_table *tbl, struct nfs4_slot *sp) -{ - return sp - tbl->slots; -} - /* * Session related parameters */ -- cgit v1.2.3 From 76e697ba7e8d187f50e385d21a2b2f1709a62c14 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 26 Nov 2012 14:20:49 -0500 Subject: NFSv4.1: Move slot table and session struct definitions to nfs4session.h Clean up. Gather NFSv4.1 slot definitions in fs/nfs/nfs4session.h. Signed-off-by: Trond Myklebust --- include/linux/nfs_fs_sb.h | 49 ----------------------------------------------- include/linux/nfs_xdr.h | 11 +---------- 2 files changed, 1 insertion(+), 59 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index e707c1b69796..6c6ed153a9b4 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -198,53 +198,4 @@ struct nfs_server { #define NFS_CAP_POSIX_LOCK (1U << 14) #define NFS_CAP_UIDGID_NOMAP (1U << 15) - -/* maximum number of slots to use */ -#define NFS4_DEF_SLOT_TABLE_SIZE (16U) -#define NFS4_MAX_SLOT_TABLE (256U) -#define NFS4_NO_SLOT ((u32)-1) - -#if IS_ENABLED(CONFIG_NFS_V4) - -/* Sessions */ -#define SLOT_TABLE_SZ DIV_ROUND_UP(NFS4_MAX_SLOT_TABLE, 8*sizeof(long)) -struct nfs4_slot_table { - struct nfs4_session *session; /* Parent session */ - struct nfs4_slot *slots; /* seqid per slot */ - unsigned long used_slots[SLOT_TABLE_SZ]; /* used/unused bitmap */ - spinlock_t slot_tbl_lock; - struct rpc_wait_queue slot_tbl_waitq; /* allocators may wait here */ - u32 max_slots; /* # slots in table */ - u32 max_slotid; /* Max allowed slotid value */ - u32 highest_used_slotid; /* sent to server on each SEQ. - * op for dynamic resizing */ - u32 target_highest_slotid; /* Server max_slot target */ - u32 server_highest_slotid; /* Server highest slotid */ - unsigned long generation; /* Generation counter for - target_highest_slotid */ - struct completion complete; -}; - -/* - * Session related parameters - */ -struct nfs4_session { - struct nfs4_sessionid sess_id; - u32 flags; - unsigned long session_state; - u32 hash_alg; - u32 ssv_len; - - /* The fore and back channel */ - struct nfs4_channel_attrs fc_attrs; - struct nfs4_slot_table fc_slot_table; - struct nfs4_channel_attrs bc_attrs; - struct nfs4_slot_table bc_slot_table; - struct nfs_client *clp; - /* Create session arguments */ - unsigned int fc_target_max_rqst_sz; - unsigned int fc_target_max_resp_sz; -}; - -#endif /* CONFIG_NFS_V4 */ #endif diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 44d256f6021c..2076149db1a4 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -185,16 +185,7 @@ struct nfs4_channel_attrs { u32 max_reqs; }; -/* nfs41 sessions slot seqid */ -struct nfs4_slot { - struct nfs4_slot_table *table; - struct nfs4_slot *next; - unsigned long generation; - unsigned long renewal_time; - u32 slot_nr; - u32 seq_nr; -}; - +struct nfs4_slot; struct nfs4_sequence_args { struct nfs4_slot *sa_slot; u8 sa_cache_this; -- cgit v1.2.3 From 8fe72bac8de784c4059b41a7dd6bb0151a3ae898 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 29 Oct 2012 19:02:20 -0400 Subject: NFSv4: Clean up handling of privileged operations Privileged rpc calls are those that are run by the state recovery thread, in cases where we're trying to recover the system after a server reboot or a network partition. In those cases, we want to fence off all other rpc calls (see nfs4_begin_drain_session()) so that they don't end up using stateids or clientids that are in the process of being recovered. Prior to this patch, we had to set up special callback functions in order to declare an rpc call as being privileged. By adding a new field to the sequence arguments, this patch simplifies things considerably, and allows us to declare the rpc call as privileged before it is run. Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 2076149db1a4..baa673edb597 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -188,7 +188,8 @@ struct nfs4_channel_attrs { struct nfs4_slot; struct nfs4_sequence_args { struct nfs4_slot *sa_slot; - u8 sa_cache_this; + u8 sa_cache_this : 1, + sa_privileged : 1; }; struct nfs4_sequence_res { -- cgit v1.2.3 From 62ae082d883d167cdaa7895cf2972d85e178228a Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 29 Nov 2012 17:10:01 -0500 Subject: NFSv4: Reorder the XDR structures to put sequence at the top, not bottom Pre-condition for optimising the slot allocation and reintroducing FIFO behaviour. Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 138 ++++++++++++++++++++++++------------------------ 1 file changed, 69 insertions(+), 69 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index baa673edb597..a55abd499c21 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -205,8 +205,8 @@ struct nfs4_get_lease_time_args { }; struct nfs4_get_lease_time_res { - struct nfs_fsinfo *lr_fsinfo; struct nfs4_sequence_res lr_seq_res; + struct nfs_fsinfo *lr_fsinfo; }; #define PNFS_LAYOUT_MAXSIZE 4096 @@ -224,23 +224,23 @@ struct pnfs_layout_range { }; struct nfs4_layoutget_args { + struct nfs4_sequence_args seq_args; __u32 type; struct pnfs_layout_range range; __u64 minlength; __u32 maxcount; struct inode *inode; struct nfs_open_context *ctx; - struct nfs4_sequence_args seq_args; nfs4_stateid stateid; struct nfs4_layoutdriver_data layout; }; struct nfs4_layoutget_res { + struct nfs4_sequence_res seq_res; __u32 return_on_close; struct pnfs_layout_range range; __u32 type; nfs4_stateid stateid; - struct nfs4_sequence_res seq_res; struct nfs4_layoutdriver_data *layoutp; }; @@ -251,38 +251,38 @@ struct nfs4_layoutget { }; struct nfs4_getdevicelist_args { + struct nfs4_sequence_args seq_args; const struct nfs_fh *fh; u32 layoutclass; - struct nfs4_sequence_args seq_args; }; struct nfs4_getdevicelist_res { - struct pnfs_devicelist *devlist; struct nfs4_sequence_res seq_res; + struct pnfs_devicelist *devlist; }; struct nfs4_getdeviceinfo_args { - struct pnfs_device *pdev; struct nfs4_sequence_args seq_args; + struct pnfs_device *pdev; }; struct nfs4_getdeviceinfo_res { - struct pnfs_device *pdev; struct nfs4_sequence_res seq_res; + struct pnfs_device *pdev; }; struct nfs4_layoutcommit_args { + struct nfs4_sequence_args seq_args; nfs4_stateid stateid; __u64 lastbytewritten; struct inode *inode; const u32 *bitmask; - struct nfs4_sequence_args seq_args; }; struct nfs4_layoutcommit_res { + struct nfs4_sequence_res seq_res; struct nfs_fattr *fattr; const struct nfs_server *server; - struct nfs4_sequence_res seq_res; int status; }; @@ -296,11 +296,11 @@ struct nfs4_layoutcommit_data { }; struct nfs4_layoutreturn_args { + struct nfs4_sequence_args seq_args; struct pnfs_layout_hdr *layout; struct inode *inode; nfs4_stateid stateid; __u32 layout_type; - struct nfs4_sequence_args seq_args; }; struct nfs4_layoutreturn_res { @@ -326,6 +326,7 @@ struct stateowner_id { * Arguments to the open call. */ struct nfs_openargs { + struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; struct nfs_seqid * seqid; int open_flags; @@ -346,10 +347,10 @@ struct nfs_openargs { const u32 * bitmask; const u32 * open_bitmap; __u32 claim; - struct nfs4_sequence_args seq_args; }; struct nfs_openres { + struct nfs4_sequence_res seq_res; nfs4_stateid stateid; struct nfs_fh fh; struct nfs4_change_info cinfo; @@ -364,7 +365,6 @@ struct nfs_openres { __u32 attrset[NFS4_BITMAP_SIZE]; struct nfs4_string *owner; struct nfs4_string *group_owner; - struct nfs4_sequence_res seq_res; __u32 access_request; __u32 access_supported; __u32 access_result; @@ -388,20 +388,20 @@ struct nfs_open_confirmres { * Arguments to the close call. */ struct nfs_closeargs { + struct nfs4_sequence_args seq_args; struct nfs_fh * fh; nfs4_stateid * stateid; struct nfs_seqid * seqid; fmode_t fmode; const u32 * bitmask; - struct nfs4_sequence_args seq_args; }; struct nfs_closeres { + struct nfs4_sequence_res seq_res; nfs4_stateid stateid; struct nfs_fattr * fattr; struct nfs_seqid * seqid; const struct nfs_server *server; - struct nfs4_sequence_res seq_res; }; /* * * Arguments to the lock,lockt, and locku call. @@ -413,6 +413,7 @@ struct nfs_lowner { }; struct nfs_lock_args { + struct nfs4_sequence_args seq_args; struct nfs_fh * fh; struct file_lock * fl; struct nfs_seqid * lock_seqid; @@ -423,40 +424,39 @@ struct nfs_lock_args { unsigned char block : 1; unsigned char reclaim : 1; unsigned char new_lock_owner : 1; - struct nfs4_sequence_args seq_args; }; struct nfs_lock_res { + struct nfs4_sequence_res seq_res; nfs4_stateid stateid; struct nfs_seqid * lock_seqid; struct nfs_seqid * open_seqid; - struct nfs4_sequence_res seq_res; }; struct nfs_locku_args { + struct nfs4_sequence_args seq_args; struct nfs_fh * fh; struct file_lock * fl; struct nfs_seqid * seqid; nfs4_stateid * stateid; - struct nfs4_sequence_args seq_args; }; struct nfs_locku_res { + struct nfs4_sequence_res seq_res; nfs4_stateid stateid; struct nfs_seqid * seqid; - struct nfs4_sequence_res seq_res; }; struct nfs_lockt_args { + struct nfs4_sequence_args seq_args; struct nfs_fh * fh; struct file_lock * fl; struct nfs_lowner lock_owner; - struct nfs4_sequence_args seq_args; }; struct nfs_lockt_res { - struct file_lock * denied; /* LOCK, LOCKT failed */ struct nfs4_sequence_res seq_res; + struct file_lock * denied; /* LOCK, LOCKT failed */ }; struct nfs_release_lockowner_args { @@ -464,22 +464,23 @@ struct nfs_release_lockowner_args { }; struct nfs4_delegreturnargs { + struct nfs4_sequence_args seq_args; const struct nfs_fh *fhandle; const nfs4_stateid *stateid; const u32 * bitmask; - struct nfs4_sequence_args seq_args; }; struct nfs4_delegreturnres { + struct nfs4_sequence_res seq_res; struct nfs_fattr * fattr; const struct nfs_server *server; - struct nfs4_sequence_res seq_res; }; /* * Arguments to the read call. */ struct nfs_readargs { + struct nfs4_sequence_args seq_args; struct nfs_fh * fh; struct nfs_open_context *context; struct nfs_lock_context *lock_context; @@ -487,20 +488,20 @@ struct nfs_readargs { __u32 count; unsigned int pgbase; struct page ** pages; - struct nfs4_sequence_args seq_args; }; struct nfs_readres { + struct nfs4_sequence_res seq_res; struct nfs_fattr * fattr; __u32 count; int eof; - struct nfs4_sequence_res seq_res; }; /* * Arguments to the write call. */ struct nfs_writeargs { + struct nfs4_sequence_args seq_args; struct nfs_fh * fh; struct nfs_open_context *context; struct nfs_lock_context *lock_context; @@ -510,7 +511,6 @@ struct nfs_writeargs { unsigned int pgbase; struct page ** pages; const u32 * bitmask; - struct nfs4_sequence_args seq_args; }; struct nfs_write_verifier { @@ -523,65 +523,65 @@ struct nfs_writeverf { }; struct nfs_writeres { + struct nfs4_sequence_res seq_res; struct nfs_fattr * fattr; struct nfs_writeverf * verf; __u32 count; const struct nfs_server *server; - struct nfs4_sequence_res seq_res; }; /* * Arguments to the commit call. */ struct nfs_commitargs { + struct nfs4_sequence_args seq_args; struct nfs_fh *fh; __u64 offset; __u32 count; const u32 *bitmask; - struct nfs4_sequence_args seq_args; }; struct nfs_commitres { + struct nfs4_sequence_res seq_res; struct nfs_fattr *fattr; struct nfs_writeverf *verf; const struct nfs_server *server; - struct nfs4_sequence_res seq_res; }; /* * Common arguments to the unlink call */ struct nfs_removeargs { + struct nfs4_sequence_args seq_args; const struct nfs_fh *fh; struct qstr name; - struct nfs4_sequence_args seq_args; }; struct nfs_removeres { + struct nfs4_sequence_res seq_res; const struct nfs_server *server; struct nfs_fattr *dir_attr; struct nfs4_change_info cinfo; - struct nfs4_sequence_res seq_res; }; /* * Common arguments to the rename call */ struct nfs_renameargs { + struct nfs4_sequence_args seq_args; const struct nfs_fh *old_dir; const struct nfs_fh *new_dir; const struct qstr *old_name; const struct qstr *new_name; - struct nfs4_sequence_args seq_args; }; struct nfs_renameres { + struct nfs4_sequence_res seq_res; const struct nfs_server *server; struct nfs4_change_info old_cinfo; struct nfs_fattr *old_fattr; struct nfs4_change_info new_cinfo; struct nfs_fattr *new_fattr; - struct nfs4_sequence_res seq_res; }; /* @@ -622,20 +622,20 @@ struct nfs_createargs { }; struct nfs_setattrargs { + struct nfs4_sequence_args seq_args; struct nfs_fh * fh; nfs4_stateid stateid; struct iattr * iap; const struct nfs_server * server; /* Needed for name mapping */ const u32 * bitmask; - struct nfs4_sequence_args seq_args; }; struct nfs_setaclargs { + struct nfs4_sequence_args seq_args; struct nfs_fh * fh; size_t acl_len; unsigned int acl_pgbase; struct page ** acl_pages; - struct nfs4_sequence_args seq_args; }; struct nfs_setaclres { @@ -643,27 +643,27 @@ struct nfs_setaclres { }; struct nfs_getaclargs { + struct nfs4_sequence_args seq_args; struct nfs_fh * fh; size_t acl_len; unsigned int acl_pgbase; struct page ** acl_pages; - struct nfs4_sequence_args seq_args; }; /* getxattr ACL interface flags */ #define NFS4_ACL_TRUNC 0x0001 /* ACL was truncated */ struct nfs_getaclres { + struct nfs4_sequence_res seq_res; size_t acl_len; size_t acl_data_offset; int acl_flags; struct page * acl_scratch; - struct nfs4_sequence_res seq_res; }; struct nfs_setattrres { + struct nfs4_sequence_res seq_res; struct nfs_fattr * fattr; const struct nfs_server * server; - struct nfs4_sequence_res seq_res; }; struct nfs_linkargs { @@ -828,21 +828,22 @@ struct nfs3_getaclres { typedef u64 clientid4; struct nfs4_accessargs { + struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; const u32 * bitmask; u32 access; - struct nfs4_sequence_args seq_args; }; struct nfs4_accessres { + struct nfs4_sequence_res seq_res; const struct nfs_server * server; struct nfs_fattr * fattr; u32 supported; u32 access; - struct nfs4_sequence_res seq_res; }; struct nfs4_create_arg { + struct nfs4_sequence_args seq_args; u32 ftype; union { struct { @@ -859,88 +860,88 @@ struct nfs4_create_arg { const struct iattr * attrs; const struct nfs_fh * dir_fh; const u32 * bitmask; - struct nfs4_sequence_args seq_args; }; struct nfs4_create_res { + struct nfs4_sequence_res seq_res; const struct nfs_server * server; struct nfs_fh * fh; struct nfs_fattr * fattr; struct nfs4_change_info dir_cinfo; - struct nfs4_sequence_res seq_res; }; struct nfs4_fsinfo_arg { + struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; const u32 * bitmask; - struct nfs4_sequence_args seq_args; }; struct nfs4_fsinfo_res { - struct nfs_fsinfo *fsinfo; struct nfs4_sequence_res seq_res; + struct nfs_fsinfo *fsinfo; }; struct nfs4_getattr_arg { + struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; const u32 * bitmask; - struct nfs4_sequence_args seq_args; }; struct nfs4_getattr_res { + struct nfs4_sequence_res seq_res; const struct nfs_server * server; struct nfs_fattr * fattr; - struct nfs4_sequence_res seq_res; }; struct nfs4_link_arg { + struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; const struct nfs_fh * dir_fh; const struct qstr * name; const u32 * bitmask; - struct nfs4_sequence_args seq_args; }; struct nfs4_link_res { + struct nfs4_sequence_res seq_res; const struct nfs_server * server; struct nfs_fattr * fattr; struct nfs4_change_info cinfo; struct nfs_fattr * dir_attr; - struct nfs4_sequence_res seq_res; }; struct nfs4_lookup_arg { + struct nfs4_sequence_args seq_args; const struct nfs_fh * dir_fh; const struct qstr * name; const u32 * bitmask; - struct nfs4_sequence_args seq_args; }; struct nfs4_lookup_res { + struct nfs4_sequence_res seq_res; const struct nfs_server * server; struct nfs_fattr * fattr; struct nfs_fh * fh; - struct nfs4_sequence_res seq_res; }; struct nfs4_lookup_root_arg { - const u32 * bitmask; struct nfs4_sequence_args seq_args; + const u32 * bitmask; }; struct nfs4_pathconf_arg { + struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; const u32 * bitmask; - struct nfs4_sequence_args seq_args; }; struct nfs4_pathconf_res { - struct nfs_pathconf *pathconf; struct nfs4_sequence_res seq_res; + struct nfs_pathconf *pathconf; }; struct nfs4_readdir_arg { + struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; u64 cookie; nfs4_verifier verifier; @@ -949,21 +950,20 @@ struct nfs4_readdir_arg { unsigned int pgbase; /* zero-copy data */ const u32 * bitmask; int plus; - struct nfs4_sequence_args seq_args; }; struct nfs4_readdir_res { + struct nfs4_sequence_res seq_res; nfs4_verifier verifier; unsigned int pgbase; - struct nfs4_sequence_res seq_res; }; struct nfs4_readlink { + struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; unsigned int pgbase; unsigned int pglen; /* zero-copy data */ struct page ** pages; /* zero-copy data */ - struct nfs4_sequence_args seq_args; }; struct nfs4_readlink_res { @@ -989,28 +989,28 @@ struct nfs4_setclientid_res { }; struct nfs4_statfs_arg { + struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; const u32 * bitmask; - struct nfs4_sequence_args seq_args; }; struct nfs4_statfs_res { - struct nfs_fsstat *fsstat; struct nfs4_sequence_res seq_res; + struct nfs_fsstat *fsstat; }; struct nfs4_server_caps_arg { - struct nfs_fh *fhandle; struct nfs4_sequence_args seq_args; + struct nfs_fh *fhandle; }; struct nfs4_server_caps_res { + struct nfs4_sequence_res seq_res; u32 attr_bitmask[3]; u32 acl_bitmask; u32 has_links; u32 has_symlinks; u32 fh_expire_type; - struct nfs4_sequence_res seq_res; }; #define NFS4_PATHNAME_MAXCOMPONENTS 512 @@ -1036,16 +1036,16 @@ struct nfs4_fs_locations { }; struct nfs4_fs_locations_arg { + struct nfs4_sequence_args seq_args; const struct nfs_fh *dir_fh; const struct qstr *name; struct page *page; const u32 *bitmask; - struct nfs4_sequence_args seq_args; }; struct nfs4_fs_locations_res { - struct nfs4_fs_locations *fs_locations; struct nfs4_sequence_res seq_res; + struct nfs4_fs_locations *fs_locations; }; struct nfs4_secinfo_oid { @@ -1070,14 +1070,14 @@ struct nfs4_secinfo_flavors { }; struct nfs4_secinfo_arg { + struct nfs4_sequence_args seq_args; const struct nfs_fh *dir_fh; const struct qstr *name; - struct nfs4_sequence_args seq_args; }; struct nfs4_secinfo_res { - struct nfs4_secinfo_flavors *flavors; struct nfs4_sequence_res seq_res; + struct nfs4_secinfo_flavors *flavors; }; #endif /* CONFIG_NFS_V4 */ @@ -1157,9 +1157,9 @@ struct nfs41_create_session_res { }; struct nfs41_reclaim_complete_args { + struct nfs4_sequence_args seq_args; /* In the future extend to include curr_fh for use with migration */ unsigned char one_fs:1; - struct nfs4_sequence_args seq_args; }; struct nfs41_reclaim_complete_res { @@ -1169,28 +1169,28 @@ struct nfs41_reclaim_complete_res { #define SECINFO_STYLE_CURRENT_FH 0 #define SECINFO_STYLE_PARENT 1 struct nfs41_secinfo_no_name_args { - int style; struct nfs4_sequence_args seq_args; + int style; }; struct nfs41_test_stateid_args { - nfs4_stateid *stateid; struct nfs4_sequence_args seq_args; + nfs4_stateid *stateid; }; struct nfs41_test_stateid_res { - unsigned int status; struct nfs4_sequence_res seq_res; + unsigned int status; }; struct nfs41_free_stateid_args { - nfs4_stateid *stateid; struct nfs4_sequence_args seq_args; + nfs4_stateid *stateid; }; struct nfs41_free_stateid_res { - unsigned int status; struct nfs4_sequence_res seq_res; + unsigned int status; }; #else -- cgit v1.2.3 From c05eecf636101dd4347b2d8fa457626bf0088e0a Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 30 Nov 2012 23:59:29 -0500 Subject: SUNRPC: Don't allow low priority tasks to pre-empt higher priority ones Currently, the priority queues attempt to be 'fair' to lower priority tasks by scheduling them after a certain number of higher priority tasks have run. The problem is that both the transport send queue and the NFSv4.1 session slot queue have strong ordering requirements. This patch therefore removes the fairness code in favour of strong ordering of task priorities. Signed-off-by: Trond Myklebust --- include/linux/sunrpc/sched.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h index dc0c3cc3ada3..b64f8eb0b973 100644 --- a/include/linux/sunrpc/sched.h +++ b/include/linux/sunrpc/sched.h @@ -192,7 +192,6 @@ struct rpc_wait_queue { pid_t owner; /* process id of last task serviced */ unsigned char maxpriority; /* maximum priority (0 if queue is not a priority queue) */ unsigned char priority; /* current priority */ - unsigned char count; /* # task groups remaining serviced so far */ unsigned char nr; /* # tasks remaining for cookie */ unsigned short qlen; /* total # tasks waiting in queue */ struct rpc_timer timer_list; -- cgit v1.2.3 From 914daba865cb5c38cd5fdee024ca38029315b38f Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Tue, 9 Oct 2012 00:22:59 +0200 Subject: KVM: Distangle eventfd code from irqchip The current eventfd code assumes that when we have eventfd, we also have irqfd for in-kernel interrupt delivery. This is not necessarily true. On PPC we don't have an in-kernel irqchip yet, but we can still support easily support eventfd. Signed-off-by: Alexander Graf --- include/linux/kvm_host.h | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 8e5c7b651655..c823e47c3641 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -900,10 +900,20 @@ static inline void kvm_free_irq_routing(struct kvm *kvm) {} #ifdef CONFIG_HAVE_KVM_EVENTFD void kvm_eventfd_init(struct kvm *kvm); +int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); + +#ifdef CONFIG_HAVE_KVM_IRQCHIP int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); void kvm_irqfd_release(struct kvm *kvm); void kvm_irq_routing_update(struct kvm *, struct kvm_irq_routing_table *); -int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); +#else +static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) +{ + return -EINVAL; +} + +static inline void kvm_irqfd_release(struct kvm *kvm) {} +#endif #else -- cgit v1.2.3 From cf66bb93e0f75e0a4ba1ec070692618fa028e994 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Mon, 3 Dec 2012 16:25:40 +0000 Subject: byteorder: allow arch to opt to use GCC intrinsics for byteswapping Since GCC 4.4, there have been __builtin_bswap32() and __builtin_bswap16() intrinsics. A __builtin_bswap16() came a little later (4.6 for PowerPC, 48 for other platforms). By using these instead of the inline assembler that most architectures have in their __arch_swabXX() macros, we let the compiler see what's actually happening. The resulting code should be at least as good, and much *better* in the cases where it can be combined with a nearby load or store, using a load-and-byteswap or store-and-byteswap instruction (e.g. lwbrx/stwbrx on PowerPC, movbe on Atom). When GCC is sufficiently recent *and* the architecture opts in to using the intrinsics by setting CONFIG_ARCH_USE_BUILTIN_BSWAP, they will be used in preference to the __arch_swabXX() macros. An architecture which does not set ARCH_USE_BUILTIN_BSWAP will continue to use its own hand-crafted macros. Signed-off-by: David Woodhouse Acked-by: H. Peter Anvin --- include/linux/compiler-gcc4.h | 10 ++++++++++ include/linux/compiler-intel.h | 7 +++++++ 2 files changed, 17 insertions(+) (limited to 'include/linux') diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h index 412bc6c2b023..dc16a858e77c 100644 --- a/include/linux/compiler-gcc4.h +++ b/include/linux/compiler-gcc4.h @@ -63,3 +63,13 @@ #define __compiletime_warning(message) __attribute__((warning(message))) #define __compiletime_error(message) __attribute__((error(message))) #endif + +#ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP +#if __GNUC_MINOR__ >= 4 +#define __HAVE_BUILTIN_BSWAP32__ +#define __HAVE_BUILTIN_BSWAP64__ +#endif +#if __GNUC_MINOR__ >= 8 || (defined(__powerpc__) && __GNUC_MINOR__ >= 6) +#define __HAVE_BUILTIN_BSWAP16__ +#endif +#endif diff --git a/include/linux/compiler-intel.h b/include/linux/compiler-intel.h index d8e636e5607d..973ce10c40b6 100644 --- a/include/linux/compiler-intel.h +++ b/include/linux/compiler-intel.h @@ -29,3 +29,10 @@ #endif #define uninitialized_var(x) x + +#ifndef __HAVE_BUILTIN_BSWAP16__ +/* icc has this, but it's called _bswap16 */ +#define __HAVE_BUILTIN_BSWAP16__ +#define __builtin_bswap16 _bswap16 +#endif + -- cgit v1.2.3 From d1e7de3007c6e34c5e6d5e1b707b5aba4a1cd57f Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Tue, 4 Dec 2012 15:01:01 +0100 Subject: regulators: add regulator_can_change_voltage() function Introduce a regulator_can_change_voltage() function for the subsytems or drivers which might check if applying voltage change is possible and use special workaround code when the driver is used with fixed regulators or regulators with disabled ability to change the voltage. Signed-off-by: Marek Szyprowski Signed-off-by: Mark Brown --- include/linux/regulator/consumer.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h index c43cd3556b1f..5d0f7c10bef1 100644 --- a/include/linux/regulator/consumer.h +++ b/include/linux/regulator/consumer.h @@ -160,6 +160,7 @@ int regulator_bulk_force_disable(int num_consumers, void regulator_bulk_free(int num_consumers, struct regulator_bulk_data *consumers); +int regulator_can_change_voltage(struct regulator *regulator); int regulator_count_voltages(struct regulator *regulator); int regulator_list_voltage(struct regulator *regulator, unsigned selector); int regulator_is_supported_voltage(struct regulator *regulator, -- cgit v1.2.3 From 6d49e352ae9aed3f599041b0c0389aa924815f14 Mon Sep 17 00:00:00 2001 From: Nadia Yvette Chambers Date: Thu, 6 Dec 2012 10:39:54 +0100 Subject: propagate name change to comments in kernel source I've legally changed my name with New York State, the US Social Security Administration, et al. This patch propagates the name change and change in initials and login to comments in the kernel source as well. Signed-off-by: Nadia Yvette Chambers Signed-off-by: Jiri Kosina --- include/linux/hash.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/hash.h b/include/linux/hash.h index 24df9e70406f..61c97ae22e01 100644 --- a/include/linux/hash.h +++ b/include/linux/hash.h @@ -1,7 +1,7 @@ #ifndef _LINUX_HASH_H #define _LINUX_HASH_H /* Fast hashing routine for ints, longs and pointers. - (C) 2002 William Lee Irwin III, IBM */ + (C) 2002 Nadia Yvette Chambers, IBM */ /* * Knuth recommends primes in approximately golden ratio to the maximum -- cgit v1.2.3 From 01331040e6442ad09181bfaacd8bb9687dce2389 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 5 Dec 2012 16:45:31 +0100 Subject: wireless: fix VHT max AMPDU exponent definition This is really a 3-bit field, not a single bit, so declare a mask and shift. Also fix hwsim, it advertises the maximum possible. While at it reindent all the defines using tabs instead of spaces. Change-Id: I7cd81c0d72f76deb5010aba5bfa3dd312006e898 Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 54 ++++++++++++++++++++++++----------------------- 1 file changed, 28 insertions(+), 26 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 8f690e53dd89..f0859cc73861 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -1251,32 +1251,34 @@ struct ieee80211_vht_operation { #define IEEE80211_VHT_MCS_NOT_SUPPORTED 3 /* 802.11ac VHT Capabilities */ -#define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895 0x00000000 -#define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991 0x00000001 -#define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 0x00000002 -#define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ 0x00000004 -#define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ 0x00000008 -#define IEEE80211_VHT_CAP_RXLDPC 0x00000010 -#define IEEE80211_VHT_CAP_SHORT_GI_80 0x00000020 -#define IEEE80211_VHT_CAP_SHORT_GI_160 0x00000040 -#define IEEE80211_VHT_CAP_TXSTBC 0x00000080 -#define IEEE80211_VHT_CAP_RXSTBC_1 0x00000100 -#define IEEE80211_VHT_CAP_RXSTBC_2 0x00000200 -#define IEEE80211_VHT_CAP_RXSTBC_3 0x00000300 -#define IEEE80211_VHT_CAP_RXSTBC_4 0x00000400 -#define IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE 0x00000800 -#define IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE 0x00001000 -#define IEEE80211_VHT_CAP_BEAMFORMER_ANTENNAS_MAX 0x00006000 -#define IEEE80211_VHT_CAP_SOUNDING_DIMENTION_MAX 0x00030000 -#define IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE 0x00080000 -#define IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE 0x00100000 -#define IEEE80211_VHT_CAP_VHT_TXOP_PS 0x00200000 -#define IEEE80211_VHT_CAP_HTC_VHT 0x00400000 -#define IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT 0x00800000 -#define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB 0x08000000 -#define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB 0x0c000000 -#define IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN 0x10000000 -#define IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN 0x20000000 +#define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895 0x00000000 +#define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991 0x00000001 +#define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 0x00000002 +#define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ 0x00000004 +#define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ 0x00000008 +#define IEEE80211_VHT_CAP_RXLDPC 0x00000010 +#define IEEE80211_VHT_CAP_SHORT_GI_80 0x00000020 +#define IEEE80211_VHT_CAP_SHORT_GI_160 0x00000040 +#define IEEE80211_VHT_CAP_TXSTBC 0x00000080 +#define IEEE80211_VHT_CAP_RXSTBC_1 0x00000100 +#define IEEE80211_VHT_CAP_RXSTBC_2 0x00000200 +#define IEEE80211_VHT_CAP_RXSTBC_3 0x00000300 +#define IEEE80211_VHT_CAP_RXSTBC_4 0x00000400 +#define IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE 0x00000800 +#define IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE 0x00001000 +#define IEEE80211_VHT_CAP_BEAMFORMER_ANTENNAS_MAX 0x00006000 +#define IEEE80211_VHT_CAP_SOUNDING_DIMENTION_MAX 0x00030000 +#define IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE 0x00080000 +#define IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE 0x00100000 +#define IEEE80211_VHT_CAP_VHT_TXOP_PS 0x00200000 +#define IEEE80211_VHT_CAP_HTC_VHT 0x00400000 +#define IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT 23 +#define IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK \ + (7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT) +#define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB 0x08000000 +#define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB 0x0c000000 +#define IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN 0x10000000 +#define IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN 0x20000000 /* Authentication algorithms */ #define WLAN_AUTH_OPEN 0 -- cgit v1.2.3 From 3f3299d5c0268d6cc3f47b446e8aca436e4a5651 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Wed, 28 Nov 2012 13:42:38 +0100 Subject: block: Rename queue dead flag QUEUE_FLAG_DEAD is used to indicate that queuing new requests must stop. After this flag has been set queue draining starts. However, during the queue draining phase it is still safe to invoke the queue's request_fn, so QUEUE_FLAG_DYING is a better name for this flag. This patch has been generated by running the following command over the kernel source tree: git grep -lEw 'blk_queue_dead|QUEUE_FLAG_DEAD' | xargs sed -i.tmp -e 's/blk_queue_dead/blk_queue_dying/g' \ -e 's/QUEUE_FLAG_DEAD/QUEUE_FLAG_DYING/g'; \ sed -i.tmp -e "s/QUEUE_FLAG_DYING$(printf \\t)*5/QUEUE_FLAG_DYING$(printf \\t)5/g" \ include/linux/blkdev.h; \ sed -i.tmp -e 's/ DEAD/ DYING/g' -e 's/dead queue/a dying queue/' \ -e 's/Dead queue/A dying queue/' block/blk-core.c Signed-off-by: Bart Van Assche Acked-by: Tejun Heo Cc: James Bottomley Cc: Mike Christie Cc: Jens Axboe Cc: Chanho Min Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 1756001210d2..aba8246afe72 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -437,7 +437,7 @@ struct request_queue { #define QUEUE_FLAG_STOPPED 2 /* queue is stopped */ #define QUEUE_FLAG_SYNCFULL 3 /* read queue has been filled */ #define QUEUE_FLAG_ASYNCFULL 4 /* write queue has been filled */ -#define QUEUE_FLAG_DEAD 5 /* queue being torn down */ +#define QUEUE_FLAG_DYING 5 /* queue being torn down */ #define QUEUE_FLAG_BYPASS 6 /* act as dumb FIFO queue */ #define QUEUE_FLAG_BIDI 7 /* queue supports bidi requests */ #define QUEUE_FLAG_NOMERGES 8 /* disable merge attempts */ @@ -521,7 +521,7 @@ static inline void queue_flag_clear(unsigned int flag, struct request_queue *q) #define blk_queue_tagged(q) test_bit(QUEUE_FLAG_QUEUED, &(q)->queue_flags) #define blk_queue_stopped(q) test_bit(QUEUE_FLAG_STOPPED, &(q)->queue_flags) -#define blk_queue_dead(q) test_bit(QUEUE_FLAG_DEAD, &(q)->queue_flags) +#define blk_queue_dying(q) test_bit(QUEUE_FLAG_DYING, &(q)->queue_flags) #define blk_queue_bypass(q) test_bit(QUEUE_FLAG_BYPASS, &(q)->queue_flags) #define blk_queue_nomerges(q) test_bit(QUEUE_FLAG_NOMERGES, &(q)->queue_flags) #define blk_queue_noxmerges(q) \ -- cgit v1.2.3 From c246e80d86736312933646896c4157daf511dadc Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Thu, 6 Dec 2012 14:32:01 +0100 Subject: block: Avoid that request_fn is invoked on a dead queue A block driver may start cleaning up resources needed by its request_fn as soon as blk_cleanup_queue() finished, so request_fn must not be invoked after draining finished. This is important when blk_run_queue() is invoked without any requests in progress. As an example, if blk_drain_queue() and scsi_run_queue() run in parallel, blk_drain_queue() may have finished all requests after scsi_run_queue() has taken a SCSI device off the starved list but before that last function has had a chance to run the queue. Signed-off-by: Bart Van Assche Cc: James Bottomley Cc: Mike Christie Cc: Chanho Min Acked-by: Tejun Heo Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index aba8246afe72..8bc46c250ca4 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -452,6 +452,7 @@ struct request_queue { #define QUEUE_FLAG_ADD_RANDOM 16 /* Contributes to random pool */ #define QUEUE_FLAG_SECDISCARD 17 /* supports SECDISCARD */ #define QUEUE_FLAG_SAME_FORCE 18 /* force complete on same CPU */ +#define QUEUE_FLAG_DEAD 19 /* queue tear-down finished */ #define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \ (1 << QUEUE_FLAG_STACKABLE) | \ @@ -522,6 +523,7 @@ static inline void queue_flag_clear(unsigned int flag, struct request_queue *q) #define blk_queue_tagged(q) test_bit(QUEUE_FLAG_QUEUED, &(q)->queue_flags) #define blk_queue_stopped(q) test_bit(QUEUE_FLAG_STOPPED, &(q)->queue_flags) #define blk_queue_dying(q) test_bit(QUEUE_FLAG_DYING, &(q)->queue_flags) +#define blk_queue_dead(q) test_bit(QUEUE_FLAG_DEAD, &(q)->queue_flags) #define blk_queue_bypass(q) test_bit(QUEUE_FLAG_BYPASS, &(q)->queue_flags) #define blk_queue_nomerges(q) test_bit(QUEUE_FLAG_NOMERGES, &(q)->queue_flags) #define blk_queue_noxmerges(q) \ -- cgit v1.2.3 From 24faf6f604efe18236bded4303009fc252913bf0 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Wed, 28 Nov 2012 13:46:45 +0100 Subject: block: Make blk_cleanup_queue() wait until request_fn finished Some request_fn implementations, e.g. scsi_request_fn(), unlock the queue lock internally. This may result in multiple threads executing request_fn for the same queue simultaneously. Keep track of the number of active request_fn calls and make sure that blk_cleanup_queue() waits until all active request_fn invocations have finished. A block driver may start cleaning up resources needed by its request_fn as soon as blk_cleanup_queue() finished, so blk_cleanup_queue() must wait for all outstanding request_fn invocations to finish. Signed-off-by: Bart Van Assche Reported-by: Chanho Min Cc: James Bottomley Cc: Mike Christie Acked-by: Tejun Heo Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 8bc46c250ca4..c9d233e727f2 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -378,6 +378,12 @@ struct request_queue { unsigned int nr_sorted; unsigned int in_flight[2]; + /* + * Number of active block driver functions for which blk_drain_queue() + * must wait. Must be incremented around functions that unlock the + * queue_lock internally, e.g. scsi_request_fn(). + */ + unsigned int request_fn_active; unsigned int rq_timeout; struct timer_list timeout; -- cgit v1.2.3 From 80729beb3326fd682543f4f4ea534df47ab48967 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Wed, 28 Nov 2012 13:47:36 +0100 Subject: bsg: Remove unused function bsg_goose_queue() The function bsg_goose_queue() does not have any in-tree callers, so let's remove it. Signed-off-by: Bart Van Assche Acked-by: Tejun Heo Signed-off-by: Jens Axboe --- include/linux/bsg-lib.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/bsg-lib.h b/include/linux/bsg-lib.h index 4d0fb3df2f4a..a226652a5a6c 100644 --- a/include/linux/bsg-lib.h +++ b/include/linux/bsg-lib.h @@ -67,6 +67,5 @@ void bsg_job_done(struct bsg_job *job, int result, int bsg_setup_queue(struct device *dev, struct request_queue *q, char *name, bsg_job_fn *job_fn, int dd_job_size); void bsg_request_fn(struct request_queue *q); -void bsg_goose_queue(struct request_queue *q); #endif -- cgit v1.2.3 From d6ed91aff64891fb4f0e9557d9b1734a9e8410a7 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Wed, 31 Oct 2012 09:22:58 -0200 Subject: mmc: mxs-mmc: Remove platform data All MXS users have been converted to device tree and the board files have been removed. No need to keep platform data in the driver. Also move bus_width declaration in the beggining of mxs_mmc_probe() to avoid: 'warning: ISO C90 forbids mixed declarations and code'. Signed-off-by: Fabio Estevam Acked-by: Shawn Guo Acked-by: Marek Vasut Signed-off-by: Chris Ball --- include/linux/mmc/mxs-mmc.h | 19 ------------------- 1 file changed, 19 deletions(-) delete mode 100644 include/linux/mmc/mxs-mmc.h (limited to 'include/linux') diff --git a/include/linux/mmc/mxs-mmc.h b/include/linux/mmc/mxs-mmc.h deleted file mode 100644 index 7c2ad3a7f2f3..000000000000 --- a/include/linux/mmc/mxs-mmc.h +++ /dev/null @@ -1,19 +0,0 @@ -/* - * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#ifndef __LINUX_MMC_MXS_MMC_H__ -#define __LINUX_MMC_MXS_MMC_H__ - -struct mxs_mmc_platform_data { - int wp_gpio; /* write protect pin */ - unsigned int flags; -#define SLOTF_4_BIT_CAPABLE (1 << 0) -#define SLOTF_8_BIT_CAPABLE (1 << 1) -}; - -#endif /* __LINUX_MMC_MXS_MMC_H__ */ -- cgit v1.2.3 From 5f1a4dd0372038f2490afa4540cd66b8d092839e Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Wed, 14 Nov 2012 12:35:51 +0000 Subject: mmc: Standardise capability type There are discrepancies with regards to how MMC capabilities are carried throughout the subsystem. Let's standardise them to eliminate any confusion. Signed-off-by: Lee Jones Signed-off-by: Chris Ball --- include/linux/mmc/dw_mmc.h | 4 ++-- include/linux/mmc/host.h | 4 ++-- include/linux/mmc/sdhci.h | 4 ++-- include/linux/platform_data/pxa_sdhci.h | 4 ++-- 4 files changed, 8 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h index 96531664a061..a5498dce1cb5 100644 --- a/include/linux/mmc/dw_mmc.h +++ b/include/linux/mmc/dw_mmc.h @@ -229,8 +229,8 @@ struct dw_mci_board { u32 quirks; /* Workaround / Quirk flags */ unsigned int bus_hz; /* Clock speed at the cclk_in pad */ - unsigned int caps; /* Capabilities */ - unsigned int caps2; /* More capabilities */ + u32 caps; /* Capabilities */ + u32 caps2; /* More capabilities */ /* * Override fifo depth. If 0, autodetect it from the FIFOTH register, * but note that this may not be reliable after a bootloader has used diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 7abb0e1f7bda..37442b288ee8 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -211,7 +211,7 @@ struct mmc_host { #define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */ #define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */ - unsigned long caps; /* Host capabilities */ + u32 caps; /* Host capabilities */ #define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */ #define MMC_CAP_MMC_HIGHSPEED (1 << 1) /* Can do MMC high-speed timing */ @@ -241,7 +241,7 @@ struct mmc_host { #define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */ #define MMC_CAP_HW_RESET (1 << 31) /* Hardware reset */ - unsigned int caps2; /* More host capabilities */ + u32 caps2; /* More host capabilities */ #define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */ #define MMC_CAP2_CACHE_CTRL (1 << 1) /* Allow cache control */ diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h index 1edcb4dad8c4..b34f3eb95f64 100644 --- a/include/linux/mmc/sdhci.h +++ b/include/linux/mmc/sdhci.h @@ -158,8 +158,8 @@ struct sdhci_host { struct timer_list timer; /* Timer for timeouts */ - unsigned int caps; /* Alternative CAPABILITY_0 */ - unsigned int caps1; /* Alternative CAPABILITY_1 */ + u32 caps; /* Alternative CAPABILITY_0 */ + u32 caps1; /* Alternative CAPABILITY_1 */ unsigned int ocr_avail_sdio; /* OCR bit masks */ unsigned int ocr_avail_sd; diff --git a/include/linux/platform_data/pxa_sdhci.h b/include/linux/platform_data/pxa_sdhci.h index 59acd987ed34..0d750085f119 100644 --- a/include/linux/platform_data/pxa_sdhci.h +++ b/include/linux/platform_data/pxa_sdhci.h @@ -48,8 +48,8 @@ struct sdhci_pxa_platdata { unsigned int ext_cd_gpio; bool ext_cd_gpio_invert; unsigned int max_speed; - unsigned int host_caps; - unsigned int host_caps2; + u32 host_caps; + u32 host_caps2; unsigned int quirks; unsigned int pm_caps; }; -- cgit v1.2.3 From ed9dbb6effc3516a1211a936be9bd67c03fdf858 Mon Sep 17 00:00:00 2001 From: Kevin Liu Date: Wed, 17 Oct 2012 19:04:46 +0800 Subject: mmc: host: Make UHS timing values fully unique Both of MMC_TIMING_LEGACY and MMC_TIMING_UHS_SDR12 are defined to 0. And ios->timing is set to MMC_TIMING_LEGACY during power up. But set_ios can't distinguish these two timing if host support spec 3.0. Just adjust timing values to be different can resolve this issue without any other impact. Reviewed-by: Girish K S Acked-by: Ulf Hansson Signed-off-by: Kevin Liu Signed-off-by: Chris Ball --- include/linux/mmc/host.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 37442b288ee8..23df21e5826b 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -53,12 +53,12 @@ struct mmc_ios { #define MMC_TIMING_LEGACY 0 #define MMC_TIMING_MMC_HS 1 #define MMC_TIMING_SD_HS 2 -#define MMC_TIMING_UHS_SDR12 MMC_TIMING_LEGACY -#define MMC_TIMING_UHS_SDR25 MMC_TIMING_SD_HS -#define MMC_TIMING_UHS_SDR50 3 -#define MMC_TIMING_UHS_SDR104 4 -#define MMC_TIMING_UHS_DDR50 5 -#define MMC_TIMING_MMC_HS200 6 +#define MMC_TIMING_UHS_SDR12 3 +#define MMC_TIMING_UHS_SDR25 4 +#define MMC_TIMING_UHS_SDR50 5 +#define MMC_TIMING_UHS_SDR104 6 +#define MMC_TIMING_UHS_DDR50 7 +#define MMC_TIMING_MMC_HS200 8 #define MMC_SDR_MODE 0 #define MMC_1_2V_DDR_MODE 1 -- cgit v1.2.3 From 090d25fe224c0933d2b261aad91532e725c1d889 Mon Sep 17 00:00:00 2001 From: Loic Pallardy Date: Sat, 17 Nov 2012 18:08:24 -0500 Subject: mmc: core: Expose access to RPMB partition Following JEDEC standard, if the mmc supports RPMB partition, a new interface is created and exposed via /dev/block. Users will be able to access RPMB partition using standard mmc IOCTL commands. Signed-off-by: Alex Macro Signed-off-by: Loic Pallardy Reviewed-by: Namjae Jeon Acked-by: Linus Walleij Acked-by: Johan Rudholm Acked-by: Krishna Konda Signed-off-by: Chris Ball --- include/linux/mmc/card.h | 2 ++ include/linux/mmc/mmc.h | 2 ++ 2 files changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 943550dfe9ea..5c69315d60cc 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -85,6 +85,7 @@ struct mmc_ext_csd { bool boot_ro_lockable; u8 raw_exception_status; /* 53 */ u8 raw_partition_support; /* 160 */ + u8 raw_rpmb_size_mult; /* 168 */ u8 raw_erased_mem_count; /* 181 */ u8 raw_ext_csd_structure; /* 194 */ u8 raw_card_type; /* 196 */ @@ -206,6 +207,7 @@ struct mmc_part { #define MMC_BLK_DATA_AREA_MAIN (1<<0) #define MMC_BLK_DATA_AREA_BOOT (1<<1) #define MMC_BLK_DATA_AREA_GP (1<<2) +#define MMC_BLK_DATA_AREA_RPMB (1<<3) }; /* diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index 01e4b394029b..94d532e41c61 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -286,6 +286,7 @@ struct _mmc_csd { #define EXT_CSD_BKOPS_START 164 /* W */ #define EXT_CSD_SANITIZE_START 165 /* W */ #define EXT_CSD_WR_REL_PARAM 166 /* RO */ +#define EXT_CSD_RPMB_MULT 168 /* RO */ #define EXT_CSD_BOOT_WP 173 /* R/W */ #define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */ #define EXT_CSD_PART_CONFIG 179 /* R/W */ @@ -339,6 +340,7 @@ struct _mmc_csd { #define EXT_CSD_PART_CONFIG_ACC_MASK (0x7) #define EXT_CSD_PART_CONFIG_ACC_BOOT0 (0x1) +#define EXT_CSD_PART_CONFIG_ACC_RPMB (0x3) #define EXT_CSD_PART_CONFIG_ACC_GP0 (0x4) #define EXT_CSD_PART_SUPPORT_PART_EN (0x1) -- cgit v1.2.3 From 67c79db8d9c0e5d2e2075c9108f42566ce0f8a6f Mon Sep 17 00:00:00 2001 From: Loic Pallardy Date: Mon, 6 Aug 2012 17:12:30 +0200 Subject: mmc: core: Add mmc_set_blockcount feature Provide support for automatically sending Set Block Count (CMD23) messages. Used at least for RPMB support. Signed-off-by: Alex Macro Signed-off-by: Loic Pallardy Reviewed-by: Namjae Jeon Acked-by: Linus Walleij Acked-by: Johan Rudholm Acked-by: Krishna Konda Signed-off-by: Chris Ball --- include/linux/mmc/core.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h index 9b9cdafc7737..5bf7c2274fcb 100644 --- a/include/linux/mmc/core.h +++ b/include/linux/mmc/core.h @@ -170,6 +170,8 @@ extern int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from, extern unsigned int mmc_calc_max_discard(struct mmc_card *card); extern int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen); +extern int mmc_set_blockcount(struct mmc_card *card, unsigned int blockcount, + bool is_rel_write); extern int mmc_hw_reset(struct mmc_host *host); extern int mmc_hw_reset_check(struct mmc_host *host); extern int mmc_can_reset(struct mmc_card *card); -- cgit v1.2.3 From 7c52d7bb87955095f23f96c717e787af4eea4195 Mon Sep 17 00:00:00 2001 From: Kevin Liu Date: Wed, 17 Oct 2012 19:04:48 +0800 Subject: mmc: sdhci-pxav3: add quirks2 Acked-by: Zhangfei Gao Signed-off-by: Kevin Liu Signed-off-by: Chris Ball --- include/linux/platform_data/pxa_sdhci.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/pxa_sdhci.h b/include/linux/platform_data/pxa_sdhci.h index 0d750085f119..27d3156d093a 100644 --- a/include/linux/platform_data/pxa_sdhci.h +++ b/include/linux/platform_data/pxa_sdhci.h @@ -38,6 +38,7 @@ * @max_speed: the maximum speed supported * @host_caps: Standard MMC host capabilities bit field. * @quirks: quirks of platfrom + * @quirks2: quirks2 of platfrom * @pm_caps: pm_caps of platfrom */ struct sdhci_pxa_platdata { @@ -51,6 +52,7 @@ struct sdhci_pxa_platdata { u32 host_caps; u32 host_caps2; unsigned int quirks; + unsigned int quirks2; unsigned int pm_caps; }; -- cgit v1.2.3 From ab269128a2cff7abee06f023e6466fc29991738c Mon Sep 17 00:00:00 2001 From: Abhilash Kesavan Date: Mon, 19 Nov 2012 10:26:21 +0530 Subject: mmc: dw_mmc: Add sdio power bindings Add dt-based retrieval of host sdio pm capabilities. Based on the dt based discovery do a bus init in the resume function. Signed-off-by: Olof Johansson Signed-off-by: Abhilash Kesavan Signed-off-by: Chris Ball --- include/linux/mmc/dw_mmc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h index a5498dce1cb5..34be4f47293c 100644 --- a/include/linux/mmc/dw_mmc.h +++ b/include/linux/mmc/dw_mmc.h @@ -231,6 +231,7 @@ struct dw_mci_board { u32 caps; /* Capabilities */ u32 caps2; /* More capabilities */ + u32 pm_caps; /* PM capabilities */ /* * Override fifo depth. If 0, autodetect it from the FIFOTH register, * but note that this may not be reliable after a bootloader has used -- cgit v1.2.3 From 6a66180a252f5856fc25de69c6313831f343f50f Mon Sep 17 00:00:00 2001 From: Daniel Drake Date: Sun, 25 Nov 2012 13:01:19 -0500 Subject: mmc: sdhci: add quirk for lack of 1.8v support The OLPC XO-1.75 laptop includes a SDHCI controller which is 1.8v capable, and it truthfully reports so in its capabilities. This alternate voltage is used for driving new "UHS-I" SD cards at their full speed. However, what the controller doesn't know is that the motherboard physically doesn't have a 1.8v supply available. Add a quirk so that systems such as this one can override disable 1.8v support, adding support for UHS-I cards (by running them at 3.3v). This avoids a problem where the system would first try to run the card at 1.8v, fail, and then not be able to fully reset the card to retry at the normal 3.3v voltage. This is more appropriate than using the MISSING_CAPS quirk, which is intended for cases where the SDHCI controller is actually lying about its capabilities, and would force us to somehow override both caps words from another source. Signed-off-by: Daniel Drake Reviewed-by: Philip Rakity Signed-off-by: Chris Ball --- include/linux/mmc/sdhci.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h index b34f3eb95f64..4bbc3301fbbf 100644 --- a/include/linux/mmc/sdhci.h +++ b/include/linux/mmc/sdhci.h @@ -92,6 +92,8 @@ struct sdhci_host { #define SDHCI_QUIRK2_HOST_OFF_CARD_ON (1<<0) #define SDHCI_QUIRK2_HOST_NO_CMD23 (1<<1) +/* The system physically doesn't support 1.8v, even if the host does */ +#define SDHCI_QUIRK2_NO_1_8_V (1<<2) int irq; /* Device IRQ */ void __iomem *ioaddr; /* Mapped address */ -- cgit v1.2.3 From 18a2f371f5edf41810f6469cb9be39931ef9deb9 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Wed, 5 Dec 2012 14:01:41 -0800 Subject: tmpfs: fix shared mempolicy leak This fixes a regression in 3.7-rc, which has since gone into stable. Commit 00442ad04a5e ("mempolicy: fix a memory corruption by refcount imbalance in alloc_pages_vma()") changed get_vma_policy() to raise the refcount on a shmem shared mempolicy; whereas shmem_alloc_page() went on expecting alloc_page_vma() to drop the refcount it had acquired. This deserves a rework: but for now fix the leak in shmem_alloc_page(). Hugh: shmem_swapin() did not need a fix, but surely it's clearer to use the same refcounting there as in shmem_alloc_page(), delete its onstack mempolicy, and the strange mpol_cond_copy() and __mpol_cond_copy() - those were invented to let swapin_readahead() make an unknown number of calls to alloc_pages_vma() with one mempolicy; but since 00442ad04a5e, alloc_pages_vma() has kept refcount in balance, so now no problem. Reported-and-tested-by: Tommi Rantala Signed-off-by: Mel Gorman Signed-off-by: Hugh Dickins Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds --- include/linux/mempolicy.h | 16 ---------------- 1 file changed, 16 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h index e5ccb9ddd90e..dbd212723b74 100644 --- a/include/linux/mempolicy.h +++ b/include/linux/mempolicy.h @@ -82,16 +82,6 @@ static inline void mpol_cond_put(struct mempolicy *pol) __mpol_put(pol); } -extern struct mempolicy *__mpol_cond_copy(struct mempolicy *tompol, - struct mempolicy *frompol); -static inline struct mempolicy *mpol_cond_copy(struct mempolicy *tompol, - struct mempolicy *frompol) -{ - if (!frompol) - return frompol; - return __mpol_cond_copy(tompol, frompol); -} - extern struct mempolicy *__mpol_dup(struct mempolicy *pol); static inline struct mempolicy *mpol_dup(struct mempolicy *pol) { @@ -215,12 +205,6 @@ static inline void mpol_cond_put(struct mempolicy *pol) { } -static inline struct mempolicy *mpol_cond_copy(struct mempolicy *to, - struct mempolicy *from) -{ - return from; -} - static inline void mpol_get(struct mempolicy *pol) { } -- cgit v1.2.3 From bc245cc36c5687dd3fbf6d4a1b3c13d41f9cb189 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Wed, 5 Dec 2012 18:45:58 +0100 Subject: ssb/bcma: add common header for watchdog This adds a common header for watchdog functions, so a watchdog driver just needs to use this and could provide watchdog functionality for ssb and bcma based SoCs. Patches for a watchdog driver using this interface will be send later. Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/bcm47xx_wdt.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 include/linux/bcm47xx_wdt.h (limited to 'include/linux') diff --git a/include/linux/bcm47xx_wdt.h b/include/linux/bcm47xx_wdt.h new file mode 100644 index 000000000000..e5dfc256485b --- /dev/null +++ b/include/linux/bcm47xx_wdt.h @@ -0,0 +1,19 @@ +#ifndef LINUX_BCM47XX_WDT_H_ +#define LINUX_BCM47XX_WDT_H_ + +#include + + +struct bcm47xx_wdt { + u32 (*timer_set)(struct bcm47xx_wdt *, u32); + u32 (*timer_set_ms)(struct bcm47xx_wdt *, u32); + u32 max_timer_ms; + + void *driver_data; +}; + +static inline void *bcm47xx_wdt_get_drvdata(struct bcm47xx_wdt *wdt) +{ + return wdt->driver_data; +} +#endif /* LINUX_BCM47XX_WDT_H_ */ -- cgit v1.2.3 From a22a3114a820ca3eadee6af53d90736e5ca68fa1 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Wed, 5 Dec 2012 18:46:01 +0100 Subject: bcma: add methods for watchdog driver The watchdog driver wants to set the watchdog timeout in ms and not in ticks, which is depending on the SoC type and the clock. Calculate the number of ticks per millisecond and provide two functions for the watchdog driver. Also return the ticks or millisecond the timer was set to in case the provided value was bigger than the max allowed value. Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/bcma/bcma_driver_chipcommon.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h index 145f3c56227f..2f9b01493a90 100644 --- a/include/linux/bcma/bcma_driver_chipcommon.h +++ b/include/linux/bcma/bcma_driver_chipcommon.h @@ -570,6 +570,7 @@ struct bcma_drv_cc { int nr_serial_ports; struct bcma_serial_port serial_ports[4]; #endif /* CONFIG_BCMA_DRIVER_MIPS */ + u32 ticks_per_ms; }; /* Register access */ @@ -593,8 +594,7 @@ extern void bcma_chipco_resume(struct bcma_drv_cc *cc); void bcma_chipco_bcm4331_ext_pa_lines_ctl(struct bcma_drv_cc *cc, bool enable); -extern void bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, - u32 ticks); +extern u32 bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks); void bcma_chipco_irq_mask(struct bcma_drv_cc *cc, u32 mask, u32 value); -- cgit v1.2.3 From a4855f39d4eb3f550ca5f4aac79bd999da42dc54 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Wed, 5 Dec 2012 18:46:02 +0100 Subject: bcma: register watchdog driver Register the watchdog driver to the system if this is a SoC. Using the watchdog on a non SoC device, like a PCIe card, will make the PCIe card die when the timeout expired, but starting it again is not supported by bcma. Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/bcma/bcma_driver_chipcommon.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h index 2f9b01493a90..e51359180b6f 100644 --- a/include/linux/bcma/bcma_driver_chipcommon.h +++ b/include/linux/bcma/bcma_driver_chipcommon.h @@ -1,6 +1,8 @@ #ifndef LINUX_BCMA_DRIVER_CC_H_ #define LINUX_BCMA_DRIVER_CC_H_ +#include + /** ChipCommon core registers. **/ #define BCMA_CC_ID 0x0000 #define BCMA_CC_ID_ID 0x0000FFFF @@ -571,6 +573,7 @@ struct bcma_drv_cc { struct bcma_serial_port serial_ports[4]; #endif /* CONFIG_BCMA_DRIVER_MIPS */ u32 ticks_per_ms; + struct platform_device *watchdog; }; /* Register access */ -- cgit v1.2.3 From 7ffbffe37de3979d43c1105e38eb2918bf5d35fe Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Wed, 5 Dec 2012 18:46:05 +0100 Subject: ssb: add methods for watchdog driver The watchdog driver wants to set the watchdog timeout in ms and not in ticks, which is depending on the SoC type and the clock. Calculate the number of ticks per millisecond and provide two functions for the watchdog driver. Also return the ticks or millisecond the timer was set to in case the provided value was bigger than the max allowed value. Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/ssb/ssb_driver_chipcommon.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb_driver_chipcommon.h b/include/linux/ssb/ssb_driver_chipcommon.h index c2b02a5c86ae..38339fd68a5f 100644 --- a/include/linux/ssb/ssb_driver_chipcommon.h +++ b/include/linux/ssb/ssb_driver_chipcommon.h @@ -591,6 +591,8 @@ struct ssb_chipcommon { /* Fast Powerup Delay constant */ u16 fast_pwrup_delay; struct ssb_chipcommon_pmu pmu; + u32 ticks_per_ms; + u32 max_timer_ms; }; static inline bool ssb_chipco_available(struct ssb_chipcommon *cc) @@ -630,8 +632,7 @@ enum ssb_clkmode { extern void ssb_chipco_set_clockmode(struct ssb_chipcommon *cc, enum ssb_clkmode mode); -extern void ssb_chipco_watchdog_timer_set(struct ssb_chipcommon *cc, - u32 ticks); +extern u32 ssb_chipco_watchdog_timer_set(struct ssb_chipcommon *cc, u32 ticks); void ssb_chipco_irq_mask(struct ssb_chipcommon *cc, u32 mask, u32 value); -- cgit v1.2.3 From 7280b51a29f8e6cc7d449d565182d1e1b6183907 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Wed, 5 Dec 2012 18:46:06 +0100 Subject: ssb: extif: add check for max value before setting watchdog register Prevent the watchdog register on the extif core to be set to a too high value. Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/ssb/ssb_driver_extif.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb_driver_extif.h b/include/linux/ssb/ssb_driver_extif.h index 2604efa7dc4d..b618188939d2 100644 --- a/include/linux/ssb/ssb_driver_extif.h +++ b/include/linux/ssb/ssb_driver_extif.h @@ -152,6 +152,7 @@ /* watchdog */ #define SSB_EXTIF_WATCHDOG_CLK 48000000 /* Hz */ +#define SSB_EXTIF_WATCHDOG_MAX_TIMER ((1 << 28) - 1) #ifdef CONFIG_SSB_DRIVER_EXTIF -- cgit v1.2.3 From 9f640a6376e54fa9ae834c32cbe92cefeec970dc Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Wed, 5 Dec 2012 18:46:07 +0100 Subject: ssb: extif: add methods for watchdog driver The watchdog driver wants to set the watchdog timeout in ms and not in ticks, add a method converting ms to ticks before setting the watchdog register. Return the ticks or millisecond the timer was set to in case the provided value was bigger than the max allowed value. Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/ssb/ssb_driver_extif.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb_driver_extif.h b/include/linux/ssb/ssb_driver_extif.h index b618188939d2..99511d0e931d 100644 --- a/include/linux/ssb/ssb_driver_extif.h +++ b/include/linux/ssb/ssb_driver_extif.h @@ -153,6 +153,8 @@ #define SSB_EXTIF_WATCHDOG_CLK 48000000 /* Hz */ #define SSB_EXTIF_WATCHDOG_MAX_TIMER ((1 << 28) - 1) +#define SSB_EXTIF_WATCHDOG_MAX_TIMER_MS (SSB_EXTIF_WATCHDOG_MAX_TIMER \ + / (SSB_EXTIF_WATCHDOG_CLK / 1000)) #ifdef CONFIG_SSB_DRIVER_EXTIF @@ -172,8 +174,7 @@ extern void ssb_extif_get_clockcontrol(struct ssb_extif *extif, extern void ssb_extif_timing_init(struct ssb_extif *extif, unsigned long ns); -extern void ssb_extif_watchdog_timer_set(struct ssb_extif *extif, - u32 ticks); +extern u32 ssb_extif_watchdog_timer_set(struct ssb_extif *extif, u32 ticks); /* Extif GPIO pin access */ u32 ssb_extif_gpio_in(struct ssb_extif *extif, u32 mask); @@ -211,9 +212,9 @@ void ssb_extif_timing_init(struct ssb_extif *extif, unsigned long ns) } static inline -void ssb_extif_watchdog_timer_set(struct ssb_extif *extif, - u32 ticks) +u32 ssb_extif_watchdog_timer_set(struct ssb_extif *extif, u32 ticks) { + return 0; } static inline u32 ssb_extif_gpio_in(struct ssb_extif *extif, u32 mask) -- cgit v1.2.3 From bde327eff8a722df1198df9b14464f84f1adfb65 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Wed, 5 Dec 2012 18:46:08 +0100 Subject: ssb: register watchdog driver Register the watchdog driver to the system if it is a SoC. Using the watchdog on a non SoC device, like a PCI card, will make the PCI card die when the timeout expired, but starting it again is not supported by ssb. Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/ssb/ssb.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb.h b/include/linux/ssb/ssb.h index bb674c02f306..1f64e3f1f22b 100644 --- a/include/linux/ssb/ssb.h +++ b/include/linux/ssb/ssb.h @@ -8,6 +8,7 @@ #include #include #include +#include #include @@ -432,6 +433,7 @@ struct ssb_bus { #ifdef CONFIG_SSB_EMBEDDED /* Lock for GPIO register access. */ spinlock_t gpio_lock; + struct platform_device *watchdog; #endif /* EMBEDDED */ /* Internal-only stuff follows. Do not touch. */ -- cgit v1.2.3 From eb044c48446f676ae5c38b30a2e2165742a52f4a Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Thu, 6 Dec 2012 15:35:25 +0100 Subject: ASoC: omap-twl4030: Update the header file to support more boards The common machine driver will be able to support new boards where the voice port is also in use. At the same time add possibility to fine tune the connections from twl4030 on the board: jack detection GPIO, input/output selection Signed-off-by: Peter Ujfalusi Signed-off-by: Mark Brown --- include/linux/platform_data/omap-twl4030.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/omap-twl4030.h b/include/linux/platform_data/omap-twl4030.h index c7bef788daab..ee60ef79d792 100644 --- a/include/linux/platform_data/omap-twl4030.h +++ b/include/linux/platform_data/omap-twl4030.h @@ -25,8 +25,34 @@ #ifndef _OMAP_TWL4030_H_ #define _OMAP_TWL4030_H_ +/* To select if only one channel is connected in a stereo port */ +#define OMAP_TWL4030_LEFT (1 << 0) +#define OMAP_TWL4030_RIGHT (1 << 1) + struct omap_tw4030_pdata { const char *card_name; + /* Voice port is connected to McBSP3 */ + bool voice_connected; + + /* The driver will parse the connection flags if this flag is set */ + bool custom_routing; + /* Flags to indicate connected audio ports. */ + u8 has_hs; + u8 has_hf; + u8 has_predriv; + u8 has_carkit; + bool has_ear; + + bool has_mainmic; + bool has_submic; + bool has_hsmic; + bool has_carkitmic; + bool has_digimic0; + bool has_digimic1; + u8 has_linein; + + /* Jack detect GPIO or <= 0 if it is not implemented */ + int jack_detect; }; #endif /* _OMAP_TWL4030_H_ */ -- cgit v1.2.3 From d0c6c482f6d8c2145717ab0266c87e3e792527ef Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Wed, 5 Dec 2012 18:20:36 +0100 Subject: ASoC: McASP: remove unused variables codec_fmt and sample_rate variables are unused in both snd_platform_data and davinci_audio_dev, so drop them. Signed-off-by: Daniel Mack Signed-off-by: Mark Brown --- include/linux/platform_data/davinci_asp.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/davinci_asp.h b/include/linux/platform_data/davinci_asp.h index f3d6e4f20962..8db5ae03b6e3 100644 --- a/include/linux/platform_data/davinci_asp.h +++ b/include/linux/platform_data/davinci_asp.h @@ -23,7 +23,6 @@ struct snd_platform_data { u32 rx_dma_offset; int asp_chan_q; /* event queue number for ASP channel */ int ram_chan_q; /* event queue number for RAM channel */ - unsigned int codec_fmt; /* * Allowing this is more efficient and eliminates left and right swaps * caused by underruns, but will swap the left and right channels -- cgit v1.2.3 From 805f864ebefc39065b6b0cf2548f13c2fbf888d9 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Thu, 6 Dec 2012 01:10:28 -0800 Subject: gpio: pcf857x: use client->irq for gpio_to_irq() 6e20a0a429bd4dc07d6de16d9c247270e04e4aa0 (gpio: pcf857x: enable gpio_to_irq() support) added gpio_to_irq() support on pcf857x driver, but it used pdata->irq. This patch modifies driver to use client->irq instead of it. It modifies kzm9g board platform settings, and device probe information too. This patch is tested on kzm9g board Reported-by: Christian Engelmayer Acked-by: Simon Horman Signed-off-by: Kuninori Morimoto Signed-off-by: Linus Walleij --- include/linux/i2c/pcf857x.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/i2c/pcf857x.h b/include/linux/i2c/pcf857x.h index 781e6bd06c34..0767a2a6b2f1 100644 --- a/include/linux/i2c/pcf857x.h +++ b/include/linux/i2c/pcf857x.h @@ -10,7 +10,6 @@ * @setup: optional callback issued once the GPIOs are valid * @teardown: optional callback issued before the GPIOs are invalidated * @context: optional parameter passed to setup() and teardown() - * @irq: optional interrupt number * * In addition to the I2C_BOARD_INFO() state appropriate to each chip, * the i2c_board_info used with the pcf875x driver must provide its @@ -40,8 +39,6 @@ struct pcf857x_platform_data { int gpio, unsigned ngpio, void *context); void *context; - - int irq; }; #endif /* __LINUX_PCF857X_H */ -- cgit v1.2.3 From 4529eefad087f97b33c0f31984d924b1f15d7bae Mon Sep 17 00:00:00 2001 From: "Lamarque V. Souza" Date: Thu, 6 Dec 2012 12:39:55 -0200 Subject: HID: hidp: fallback to input session properly if hid is blacklisted This patch against kernel 3.7.0-rc8 fixes a kernel oops when turning on the bluetooth mouse with id 0458:0058 [1]. The mouse in question supports both input and hid sessions, however it is blacklisted in drivers/hid/hid-core.c so the input session is one that should be used. Long ago (around kernel 3.0.0) some changes in the bluetooth subsystem made the kernel do not fallback to input session when hid session is not supported or blacklisted. This patch restore that behaviour by making the kernel try the input session if hid_add_device returns ENODEV. The patch exports hid_ignore() from hid-core.c so that it can be used in the bluetooth subsystem. [1] https://bugzilla.kernel.org/show_bug.cgi?id=39882 Signed-off-by: Lamarque V. Souza Acked-by: Gustavo Padovan Signed-off-by: Jiri Kosina --- include/linux/hid.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/hid.h b/include/linux/hid.h index 7e1f37db7582..abce7eb4f258 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -721,6 +721,7 @@ struct hid_ll_driver { extern int hid_debug; +extern bool hid_ignore(struct hid_device *); extern int hid_add_device(struct hid_device *); extern void hid_destroy_device(struct hid_device *); -- cgit v1.2.3 From 6ded7cd605502eff7341bbd912ebc90c3674c764 Mon Sep 17 00:00:00 2001 From: trem Date: Tue, 4 Dec 2012 08:52:10 +0000 Subject: net: phy: smsc: force all capable mode if the phy is started in powerdown mode A SMSC PHY in power down mode can't be used. If a SMSC PHY is in this mode in the config_init stage, the mode "all capable" is set. So the PHY could then be used. Signed-off-by: Philippe Reynes Signed-off-by: David S. Miller --- include/linux/smscphy.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/smscphy.h b/include/linux/smscphy.h index ce718cbce435..f4bf16e16e16 100644 --- a/include/linux/smscphy.h +++ b/include/linux/smscphy.h @@ -4,6 +4,7 @@ #define MII_LAN83C185_ISF 29 /* Interrupt Source Flags */ #define MII_LAN83C185_IM 30 /* Interrupt Mask */ #define MII_LAN83C185_CTRL_STATUS 17 /* Mode/Status Register */ +#define MII_LAN83C185_SPECIAL_MODES 18 /* Special Modes Register */ #define MII_LAN83C185_ISF_INT1 (1<<1) /* Auto-Negotiation Page Received */ #define MII_LAN83C185_ISF_INT2 (1<<2) /* Parallel Detection Fault */ @@ -22,4 +23,8 @@ #define MII_LAN83C185_EDPWRDOWN (1 << 13) /* EDPWRDOWN */ #define MII_LAN83C185_ENERGYON (1 << 1) /* ENERGYON */ +#define MII_LAN83C185_MODE_MASK 0xE0 +#define MII_LAN83C185_MODE_POWERDOWN 0xC0 /* Power Down mode */ +#define MII_LAN83C185_MODE_ALL 0xE0 /* All capable mode */ + #endif /* __LINUX_SMSCPHY_H__ */ -- cgit v1.2.3 From 9f1fb60a2338aa2202ca94d67f84c582f31dbf5a Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Tue, 4 Dec 2012 16:51:32 +0100 Subject: mmc: add a card-event host operation Some hosts need to perform additional actions upon card insertion or ejection. Add a host operation to be called from card detection handlers. Signed-off-by: Guennadi Liakhovetski Reviewed-by: Shawn Guo Signed-off-by: Chris Ball --- include/linux/mmc/host.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 23df21e5826b..61a10c17aabd 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -136,6 +136,7 @@ struct mmc_host_ops { void (*enable_preset_value)(struct mmc_host *host, bool enable); int (*select_drive_strength)(unsigned int max_dtr, int host_drv, int card_drv); void (*hw_reset)(struct mmc_host *host); + void (*card_event)(struct mmc_host *host); }; struct mmc_card; -- cgit v1.2.3 From c3c7c254b2e8cd99b0adf288c2a1bddacd7ba255 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 6 Dec 2012 13:54:59 +0000 Subject: net: gro: fix possible panic in skb_gro_receive() commit 2e71a6f8084e (net: gro: selective flush of packets) added a bug for skbs using frag_list. This part of the GRO stack is rarely used, as it needs skb not using a page fragment for their skb->head. Most drivers do use a page fragment, but some of them use GFP_KERNEL allocations for the initial fill of their RX ring buffer. napi_gro_flush() overwrite skb->prev that was used for these skb to point to the last skb in frag_list. Fix this using a separate field in struct napi_gro_cb to point to the last fragment. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/netdevice.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index f8eda0276f03..a848ffc327f4 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1488,6 +1488,9 @@ struct napi_gro_cb { /* Used in ipv6_gro_receive() */ int proto; + + /* used in skb_gro_receive() slow path */ + struct sk_buff *last; }; #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb) -- cgit v1.2.3 From 6a674e9c75b17e7a88ff15b3c2e269eed54f7cfb Mon Sep 17 00:00:00 2001 From: Joseph Gasparakis Date: Fri, 7 Dec 2012 14:14:14 +0000 Subject: net: Add support for hardware-offloaded encapsulation This patch adds support in the kernel for offloading in the NIC Tx and Rx checksumming for encapsulated packets (such as VXLAN and IP GRE). For Tx encapsulation offload, the driver will need to set the right bits in netdev->hw_enc_features. The protocol driver will have to set the skb->encapsulation bit and populate the inner headers, so the NIC driver will use those inner headers to calculate the csum in hardware. For Rx encapsulation offload, the driver will need to set again the skb->encapsulation flag and the skb->ip_csum to CHECKSUM_UNNECESSARY. In that case the protocol driver should push the decapsulated packet up to the stack, again with CHECKSUM_UNNECESSARY. In ether case, the protocol driver should set the skb->encapsulation flag back to zero. Finally the protocol driver should have NETIF_F_RXCSUM flag set in its features. Signed-off-by: Joseph Gasparakis Signed-off-by: Peter P Waskiewicz Jr Signed-off-by: Alexander Duyck Signed-off-by: David S. Miller --- include/linux/ip.h | 5 +++ include/linux/ipv6.h | 5 +++ include/linux/netdevice.h | 6 +++ include/linux/skbuff.h | 95 ++++++++++++++++++++++++++++++++++++++++++++++- include/linux/tcp.h | 10 +++++ include/linux/udp.h | 5 +++ 6 files changed, 125 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ip.h b/include/linux/ip.h index 58b82a22a52b..492bc6513533 100644 --- a/include/linux/ip.h +++ b/include/linux/ip.h @@ -25,6 +25,11 @@ static inline struct iphdr *ip_hdr(const struct sk_buff *skb) return (struct iphdr *)skb_network_header(skb); } +static inline struct iphdr *inner_ip_hdr(const struct sk_buff *skb) +{ + return (struct iphdr *)skb_inner_network_header(skb); +} + static inline struct iphdr *ipip_hdr(const struct sk_buff *skb) { return (struct iphdr *)skb_transport_header(skb); diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h index 12729e966dc9..faed1e357dd6 100644 --- a/include/linux/ipv6.h +++ b/include/linux/ipv6.h @@ -67,6 +67,11 @@ static inline struct ipv6hdr *ipv6_hdr(const struct sk_buff *skb) return (struct ipv6hdr *)skb_network_header(skb); } +static inline struct ipv6hdr *inner_ipv6_hdr(const struct sk_buff *skb) +{ + return (struct ipv6hdr *)skb_inner_network_header(skb); +} + static inline struct ipv6hdr *ipipv6_hdr(const struct sk_buff *skb) { return (struct ipv6hdr *)skb_transport_header(skb); diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 18c5dc98f6dc..c6a14d4d1396 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1063,6 +1063,12 @@ struct net_device { netdev_features_t wanted_features; /* mask of features inheritable by VLAN devices */ netdev_features_t vlan_features; + /* mask of features inherited by encapsulating devices + * This field indicates what encapsulation offloads + * the hardware is capable of doing, and drivers will + * need to set them appropriately. + */ + netdev_features_t hw_enc_features; /* Interface index. Unique device identifier */ int ifindex; diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index f2af494330ab..320e976d5ab8 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -376,6 +376,8 @@ typedef unsigned char *sk_buff_data_t; * @mark: Generic packet mark * @dropcount: total number of sk_receive_queue overflows * @vlan_tci: vlan tag control information + * @inner_transport_header: Inner transport layer header (encapsulation) + * @inner_network_header: Network layer header (encapsulation) * @transport_header: Transport layer header * @network_header: Network layer header * @mac_header: Link layer header @@ -471,7 +473,13 @@ struct sk_buff { __u8 wifi_acked:1; __u8 no_fcs:1; __u8 head_frag:1; - /* 8/10 bit hole (depending on ndisc_nodetype presence) */ + /* Encapsulation protocol and NIC drivers should use + * this flag to indicate to each other if the skb contains + * encapsulated packet or not and maybe use the inner packet + * headers if needed + */ + __u8 encapsulation:1; + /* 7/9 bit hole (depending on ndisc_nodetype presence) */ kmemcheck_bitfield_end(flags2); #ifdef CONFIG_NET_DMA @@ -486,6 +494,8 @@ struct sk_buff { __u32 avail_size; }; + sk_buff_data_t inner_transport_header; + sk_buff_data_t inner_network_header; sk_buff_data_t transport_header; sk_buff_data_t network_header; sk_buff_data_t mac_header; @@ -1435,12 +1445,53 @@ static inline void skb_reserve(struct sk_buff *skb, int len) skb->tail += len; } +static inline void skb_reset_inner_headers(struct sk_buff *skb) +{ + skb->inner_network_header = skb->network_header; + skb->inner_transport_header = skb->transport_header; +} + static inline void skb_reset_mac_len(struct sk_buff *skb) { skb->mac_len = skb->network_header - skb->mac_header; } #ifdef NET_SKBUFF_DATA_USES_OFFSET +static inline unsigned char *skb_inner_transport_header(const struct sk_buff + *skb) +{ + return skb->head + skb->inner_transport_header; +} + +static inline void skb_reset_inner_transport_header(struct sk_buff *skb) +{ + skb->inner_transport_header = skb->data - skb->head; +} + +static inline void skb_set_inner_transport_header(struct sk_buff *skb, + const int offset) +{ + skb_reset_inner_transport_header(skb); + skb->inner_transport_header += offset; +} + +static inline unsigned char *skb_inner_network_header(const struct sk_buff *skb) +{ + return skb->head + skb->inner_network_header; +} + +static inline void skb_reset_inner_network_header(struct sk_buff *skb) +{ + skb->inner_network_header = skb->data - skb->head; +} + +static inline void skb_set_inner_network_header(struct sk_buff *skb, + const int offset) +{ + skb_reset_inner_network_header(skb); + skb->inner_network_header += offset; +} + static inline unsigned char *skb_transport_header(const struct sk_buff *skb) { return skb->head + skb->transport_header; @@ -1496,6 +1547,38 @@ static inline void skb_set_mac_header(struct sk_buff *skb, const int offset) } #else /* NET_SKBUFF_DATA_USES_OFFSET */ +static inline unsigned char *skb_inner_transport_header(const struct sk_buff + *skb) +{ + return skb->inner_transport_header; +} + +static inline void skb_reset_inner_transport_header(struct sk_buff *skb) +{ + skb->inner_transport_header = skb->data; +} + +static inline void skb_set_inner_transport_header(struct sk_buff *skb, + const int offset) +{ + skb->inner_transport_header = skb->data + offset; +} + +static inline unsigned char *skb_inner_network_header(const struct sk_buff *skb) +{ + return skb->inner_network_header; +} + +static inline void skb_reset_inner_network_header(struct sk_buff *skb) +{ + skb->inner_network_header = skb->data; +} + +static inline void skb_set_inner_network_header(struct sk_buff *skb, + const int offset) +{ + skb->inner_network_header = skb->data + offset; +} static inline unsigned char *skb_transport_header(const struct sk_buff *skb) { @@ -1574,11 +1657,21 @@ static inline u32 skb_network_header_len(const struct sk_buff *skb) return skb->transport_header - skb->network_header; } +static inline u32 skb_inner_network_header_len(const struct sk_buff *skb) +{ + return skb->inner_transport_header - skb->inner_network_header; +} + static inline int skb_network_offset(const struct sk_buff *skb) { return skb_network_header(skb) - skb->data; } +static inline int skb_inner_network_offset(const struct sk_buff *skb) +{ + return skb_inner_network_header(skb) - skb->data; +} + static inline int pskb_network_may_pull(struct sk_buff *skb, unsigned int len) { return pskb_may_pull(skb, skb_network_offset(skb) + len); diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 60b7aac15e0e..4e1d2283e3cc 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -35,6 +35,16 @@ static inline unsigned int tcp_hdrlen(const struct sk_buff *skb) return tcp_hdr(skb)->doff * 4; } +static inline struct tcphdr *inner_tcp_hdr(const struct sk_buff *skb) +{ + return (struct tcphdr *)skb_inner_transport_header(skb); +} + +static inline unsigned int inner_tcp_hdrlen(const struct sk_buff *skb) +{ + return inner_tcp_hdr(skb)->doff * 4; +} + static inline unsigned int tcp_optlen(const struct sk_buff *skb) { return (tcp_hdr(skb)->doff - 5) * 4; diff --git a/include/linux/udp.h b/include/linux/udp.h index 0b67d7793520..9d81de123c90 100644 --- a/include/linux/udp.h +++ b/include/linux/udp.h @@ -27,6 +27,11 @@ static inline struct udphdr *udp_hdr(const struct sk_buff *skb) return (struct udphdr *)skb_transport_header(skb); } +static inline struct udphdr *inner_udp_hdr(const struct sk_buff *skb) +{ + return (struct udphdr *)skb_inner_transport_header(skb); +} + #define UDP_HTABLE_SIZE_MIN (CONFIG_BASE_SMALL ? 128 : 256) static inline int udp_hashfn(struct net *net, unsigned num, unsigned mask) -- cgit v1.2.3 From be2f6f5a7833b99bdee97c4b877dcd2afc6cdd00 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sun, 9 Dec 2012 15:40:30 +0100 Subject: mfd: wm5102: Add readback of DSP status 3 register Signed-off-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/arizona/registers.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mfd/arizona/registers.h b/include/linux/mfd/arizona/registers.h index 7671a287dfee..81bca23c9a92 100644 --- a/include/linux/mfd/arizona/registers.h +++ b/include/linux/mfd/arizona/registers.h @@ -979,6 +979,7 @@ #define ARIZONA_DSP1_CLOCKING_1 0x1101 #define ARIZONA_DSP1_STATUS_1 0x1104 #define ARIZONA_DSP1_STATUS_2 0x1105 +#define ARIZONA_DSP1_STATUS_3 0x1106 #define ARIZONA_DSP2_CONTROL_1 0x1200 #define ARIZONA_DSP2_CLOCKING_1 0x1201 #define ARIZONA_DSP2_STATUS_1 0x1204 -- cgit v1.2.3 From 759f5f3752e03f15727688b5288e360ef90c1306 Mon Sep 17 00:00:00 2001 From: Vivien Didelot Date: Fri, 7 Dec 2012 21:36:34 -0500 Subject: gpio: add TS-5500 DIO blocks support Technologic Systems TS-5500 provides digital I/O lines exposed through pin blocks. On this platform, there are three of them, named DIO1, DIO2 and LCD port, that may be used as a DIO block. The TS-5500 pin blocks are described in the product's wiki: http://wiki.embeddedarm.com/wiki/TS-5500#Digital_I.2FO This driver is not limited to the TS-5500 blocks. It can be extended to support similar boards pin blocks, such as on the TS-5600. This patch is the V2 of the previous https://lkml.org/lkml/2012/9/25/671 with corrections suggested by Linus Walleij. Signed-off-by: Vivien Didelot Signed-off-by: Jerome Oufella Signed-off-by: Linus Walleij --- include/linux/platform_data/gpio-ts5500.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 include/linux/platform_data/gpio-ts5500.h (limited to 'include/linux') diff --git a/include/linux/platform_data/gpio-ts5500.h b/include/linux/platform_data/gpio-ts5500.h new file mode 100644 index 000000000000..b10d11c9bb49 --- /dev/null +++ b/include/linux/platform_data/gpio-ts5500.h @@ -0,0 +1,27 @@ +/* + * GPIO (DIO) header for Technologic Systems TS-5500 + * + * Copyright (c) 2012 Savoir-faire Linux Inc. + * Vivien Didelot + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _PDATA_GPIO_TS5500_H +#define _PDATA_GPIO_TS5500_H + +/** + * struct ts5500_dio_platform_data - TS-5500 pin block configuration + * @base: The GPIO base number to use. + * @strap: The only pin connected to an interrupt in a block is input-only. + * If you need a bidirectional line which can trigger an IRQ, you + * may strap it with an in/out pin. This flag indicates this case. + */ +struct ts5500_dio_platform_data { + int base; + bool strap; +}; + +#endif /* _PDATA_GPIO_TS5500_H */ -- cgit v1.2.3 From dbd3fc3345390a989a033427aa915a0dfb62149f Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Mon, 10 Dec 2012 11:24:42 -0700 Subject: PCI: Use phys_addr_t for physical ROM address Use phys_addr_t rather than "void *" for physical memory address. This removes casts and fixes a "cast from pointer to integer of different size" warning on ppc44x_defconfig. Signed-off-by: Bjorn Helgaas --- include/linux/pci.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index f116b2d859dc..957563b7a5e3 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -333,7 +333,7 @@ struct pci_dev { }; struct pci_ats *ats; /* Address Translation Service */ #endif - void *rom; /* Physical pointer to ROM if it's not from the BAR */ + phys_addr_t rom; /* Physical address of ROM if it's not from the BAR */ size_t romlen; /* Length of ROM if it's not from the BAR */ }; -- cgit v1.2.3 From caf491916b1c1e939a2c7575efb7a77f11fc9bdf Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Mon, 10 Dec 2012 10:51:16 -0800 Subject: Revert "revert "Revert "mm: remove __GFP_NO_KSWAPD""" and associated damage This reverts commits a50915394f1fc02c2861d3b7ce7014788aa5066e and d7c3b937bdf45f0b844400b7bf6fd3ed50bac604. This is a revert of a revert of a revert. In addition, it reverts the even older i915 change to stop using the __GFP_NO_KSWAPD flag due to the original commits in linux-next. It turns out that the original patch really was bogus, and that the original revert was the correct thing to do after all. We thought we had fixed the problem, and then reverted the revert, but the problem really is fundamental: waking up kswapd simply isn't the right thing to do, and direct reclaim sometimes simply _is_ the right thing to do. When certain allocations fail, we simply should try some direct reclaim, and if that fails, fail the allocation. That's the right thing to do for THP allocations, which can easily fail, and the GPU allocations want to do that too. So starting kswapd is sometimes simply wrong, and removing the flag that said "don't start kswapd" was a mistake. Let's hope we never revisit this mistake again - and certainly not this many times ;) Acked-by: Mel Gorman Acked-by: Johannes Weiner Cc: Rik van Riel Cc: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/gfp.h | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 76e1aa206f57..d0a79678f169 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -30,9 +30,10 @@ struct vm_area_struct; #define ___GFP_HARDWALL 0x20000u #define ___GFP_THISNODE 0x40000u #define ___GFP_RECLAIMABLE 0x80000u -#define ___GFP_NOTRACK 0x100000u -#define ___GFP_OTHER_NODE 0x200000u -#define ___GFP_WRITE 0x400000u +#define ___GFP_NOTRACK 0x200000u +#define ___GFP_NO_KSWAPD 0x400000u +#define ___GFP_OTHER_NODE 0x800000u +#define ___GFP_WRITE 0x1000000u /* * GFP bitmasks.. @@ -85,6 +86,7 @@ struct vm_area_struct; #define __GFP_RECLAIMABLE ((__force gfp_t)___GFP_RECLAIMABLE) /* Page is reclaimable */ #define __GFP_NOTRACK ((__force gfp_t)___GFP_NOTRACK) /* Don't track with kmemcheck */ +#define __GFP_NO_KSWAPD ((__force gfp_t)___GFP_NO_KSWAPD) #define __GFP_OTHER_NODE ((__force gfp_t)___GFP_OTHER_NODE) /* On behalf of other node */ #define __GFP_WRITE ((__force gfp_t)___GFP_WRITE) /* Allocator intends to dirty page */ @@ -94,7 +96,7 @@ struct vm_area_struct; */ #define __GFP_NOTRACK_FALSE_POSITIVE (__GFP_NOTRACK) -#define __GFP_BITS_SHIFT 23 /* Room for N __GFP_FOO bits */ +#define __GFP_BITS_SHIFT 25 /* Room for N __GFP_FOO bits */ #define __GFP_BITS_MASK ((__force gfp_t)((1 << __GFP_BITS_SHIFT) - 1)) /* This equals 0, but use constants in case they ever change */ @@ -114,7 +116,8 @@ struct vm_area_struct; __GFP_MOVABLE) #define GFP_IOFS (__GFP_IO | __GFP_FS) #define GFP_TRANSHUGE (GFP_HIGHUSER_MOVABLE | __GFP_COMP | \ - __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN) + __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN | \ + __GFP_NO_KSWAPD) #ifdef CONFIG_NUMA #define GFP_THISNODE (__GFP_THISNODE | __GFP_NOWARN | __GFP_NORETRY) -- cgit v1.2.3 From ab5c4f71d8c7add173a2d32e5beefdaaf1b7cbbc Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Mon, 10 Dec 2012 15:30:28 +0100 Subject: ath9k: allow to load EEPROM content via firmware API The calibration data for devices w/o a separate EEPROM chip can be specified via the 'eeprom_data' field of 'ath9k_platform_data'. The 'eeprom_data' is usually filled from board specific setup functions. It is easy if the EEPROM data is mapped to the memory, but it can be complicated if it is stored elsewhere. The patch adds support for loading of the EEPROM data via the firmware API to avoid this limitation. Signed-off-by: Gabor Juhos Signed-off-by: John W. Linville --- include/linux/ath9k_platform.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ath9k_platform.h b/include/linux/ath9k_platform.h index 6e3f54f37844..fcdd81bd5314 100644 --- a/include/linux/ath9k_platform.h +++ b/include/linux/ath9k_platform.h @@ -22,6 +22,8 @@ #define ATH9K_PLAT_EEP_MAX_WORDS 2048 struct ath9k_platform_data { + const char *eeprom_name; + u16 eeprom_data[ATH9K_PLAT_EEP_MAX_WORDS]; u8 *macaddr; -- cgit v1.2.3 From dd31866b0d55c9b70722ebad6ccd643223d9269e Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Fri, 2 Nov 2012 17:06:26 +0900 Subject: f2fs: add on-disk layout This adds a header file describing the on-disk layout of f2fs. Signed-off-by: Changman Lee Signed-off-by: Chul Lee Signed-off-by: Jaegeuk Kim --- include/linux/f2fs_fs.h | 410 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 410 insertions(+) create mode 100644 include/linux/f2fs_fs.h (limited to 'include/linux') diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h new file mode 100644 index 000000000000..1429ece7caab --- /dev/null +++ b/include/linux/f2fs_fs.h @@ -0,0 +1,410 @@ +/** + * include/linux/f2fs_fs.h + * + * Copyright (c) 2012 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef _LINUX_F2FS_FS_H +#define _LINUX_F2FS_FS_H + +#include +#include + +#define F2FS_SUPER_OFFSET 1024 /* byte-size offset */ +#define F2FS_LOG_SECTOR_SIZE 9 /* 9 bits for 512 byte */ +#define F2FS_LOG_SECTORS_PER_BLOCK 3 /* 4KB: F2FS_BLKSIZE */ +#define F2FS_BLKSIZE 4096 /* support only 4KB block */ +#define F2FS_MAX_EXTENSION 64 /* # of extension entries */ + +#define NULL_ADDR 0x0U +#define NEW_ADDR -1U + +#define F2FS_ROOT_INO(sbi) (sbi->root_ino_num) +#define F2FS_NODE_INO(sbi) (sbi->node_ino_num) +#define F2FS_META_INO(sbi) (sbi->meta_ino_num) + +/* This flag is used by node and meta inodes, and by recovery */ +#define GFP_F2FS_ZERO (GFP_NOFS | __GFP_ZERO) + +/* + * For further optimization on multi-head logs, on-disk layout supports maximum + * 16 logs by default. The number, 16, is expected to cover all the cases + * enoughly. The implementaion currently uses no more than 6 logs. + * Half the logs are used for nodes, and the other half are used for data. + */ +#define MAX_ACTIVE_LOGS 16 +#define MAX_ACTIVE_NODE_LOGS 8 +#define MAX_ACTIVE_DATA_LOGS 8 + +/* + * For superblock + */ +struct f2fs_super_block { + __le32 magic; /* Magic Number */ + __le16 major_ver; /* Major Version */ + __le16 minor_ver; /* Minor Version */ + __le32 log_sectorsize; /* log2 sector size in bytes */ + __le32 log_sectors_per_block; /* log2 # of sectors per block */ + __le32 log_blocksize; /* log2 block size in bytes */ + __le32 log_blocks_per_seg; /* log2 # of blocks per segment */ + __le32 segs_per_sec; /* # of segments per section */ + __le32 secs_per_zone; /* # of sections per zone */ + __le32 checksum_offset; /* checksum offset inside super block */ + __le64 block_count; /* total # of user blocks */ + __le32 section_count; /* total # of sections */ + __le32 segment_count; /* total # of segments */ + __le32 segment_count_ckpt; /* # of segments for checkpoint */ + __le32 segment_count_sit; /* # of segments for SIT */ + __le32 segment_count_nat; /* # of segments for NAT */ + __le32 segment_count_ssa; /* # of segments for SSA */ + __le32 segment_count_main; /* # of segments for main area */ + __le32 segment0_blkaddr; /* start block address of segment 0 */ + __le32 cp_blkaddr; /* start block address of checkpoint */ + __le32 sit_blkaddr; /* start block address of SIT */ + __le32 nat_blkaddr; /* start block address of NAT */ + __le32 ssa_blkaddr; /* start block address of SSA */ + __le32 main_blkaddr; /* start block address of main area */ + __le32 root_ino; /* root inode number */ + __le32 node_ino; /* node inode number */ + __le32 meta_ino; /* meta inode number */ + __u8 uuid[16]; /* 128-bit uuid for volume */ + __le16 volume_name[512]; /* volume name */ + __le32 extension_count; /* # of extensions below */ + __u8 extension_list[F2FS_MAX_EXTENSION][8]; /* extension array */ +} __packed; + +/* + * For checkpoint + */ +#define CP_ERROR_FLAG 0x00000008 +#define CP_COMPACT_SUM_FLAG 0x00000004 +#define CP_ORPHAN_PRESENT_FLAG 0x00000002 +#define CP_UMOUNT_FLAG 0x00000001 + +struct f2fs_checkpoint { + __le64 checkpoint_ver; /* checkpoint block version number */ + __le64 user_block_count; /* # of user blocks */ + __le64 valid_block_count; /* # of valid blocks in main area */ + __le32 rsvd_segment_count; /* # of reserved segments for gc */ + __le32 overprov_segment_count; /* # of overprovision segments */ + __le32 free_segment_count; /* # of free segments in main area */ + + /* information of current node segments */ + __le32 cur_node_segno[MAX_ACTIVE_NODE_LOGS]; + __le16 cur_node_blkoff[MAX_ACTIVE_NODE_LOGS]; + /* information of current data segments */ + __le32 cur_data_segno[MAX_ACTIVE_DATA_LOGS]; + __le16 cur_data_blkoff[MAX_ACTIVE_DATA_LOGS]; + __le32 ckpt_flags; /* Flags : umount and journal_present */ + __le32 cp_pack_total_block_count; /* total # of one cp pack */ + __le32 cp_pack_start_sum; /* start block number of data summary */ + __le32 valid_node_count; /* Total number of valid nodes */ + __le32 valid_inode_count; /* Total number of valid inodes */ + __le32 next_free_nid; /* Next free node number */ + __le32 sit_ver_bitmap_bytesize; /* Default value 64 */ + __le32 nat_ver_bitmap_bytesize; /* Default value 256 */ + __le32 checksum_offset; /* checksum offset inside cp block */ + __le64 elapsed_time; /* mounted time */ + /* allocation type of current segment */ + unsigned char alloc_type[MAX_ACTIVE_LOGS]; + + /* SIT and NAT version bitmap */ + unsigned char sit_nat_version_bitmap[1]; +} __packed; + +/* + * For orphan inode management + */ +#define F2FS_ORPHANS_PER_BLOCK 1020 + +struct f2fs_orphan_block { + __le32 ino[F2FS_ORPHANS_PER_BLOCK]; /* inode numbers */ + __le32 reserved; /* reserved */ + __le16 blk_addr; /* block index in current CP */ + __le16 blk_count; /* Number of orphan inode blocks in CP */ + __le32 entry_count; /* Total number of orphan nodes in current CP */ + __le32 check_sum; /* CRC32 for orphan inode block */ +} __packed; + +/* + * For NODE structure + */ +struct f2fs_extent { + __le32 fofs; /* start file offset of the extent */ + __le32 blk_addr; /* start block address of the extent */ + __le32 len; /* lengh of the extent */ +} __packed; + +#define F2FS_MAX_NAME_LEN 256 +#define ADDRS_PER_INODE 923 /* Address Pointers in an Inode */ +#define ADDRS_PER_BLOCK 1018 /* Address Pointers in a Direct Block */ +#define NIDS_PER_BLOCK 1018 /* Node IDs in an Indirect Block */ + +struct f2fs_inode { + __le16 i_mode; /* file mode */ + __u8 i_advise; /* file hints */ + __u8 i_reserved; /* reserved */ + __le32 i_uid; /* user ID */ + __le32 i_gid; /* group ID */ + __le32 i_links; /* links count */ + __le64 i_size; /* file size in bytes */ + __le64 i_blocks; /* file size in blocks */ + __le64 i_atime; /* access time */ + __le64 i_ctime; /* change time */ + __le64 i_mtime; /* modification time */ + __le32 i_atime_nsec; /* access time in nano scale */ + __le32 i_ctime_nsec; /* change time in nano scale */ + __le32 i_mtime_nsec; /* modification time in nano scale */ + __le32 i_generation; /* file version (for NFS) */ + __le32 i_current_depth; /* only for directory depth */ + __le32 i_xattr_nid; /* nid to save xattr */ + __le32 i_flags; /* file attributes */ + __le32 i_pino; /* parent inode number */ + __le32 i_namelen; /* file name length */ + __u8 i_name[F2FS_MAX_NAME_LEN]; /* file name for SPOR */ + + struct f2fs_extent i_ext; /* caching a largest extent */ + + __le32 i_addr[ADDRS_PER_INODE]; /* Pointers to data blocks */ + + __le32 i_nid[5]; /* direct(2), indirect(2), + double_indirect(1) node id */ +} __packed; + +struct direct_node { + __le32 addr[ADDRS_PER_BLOCK]; /* array of data block address */ +} __packed; + +struct indirect_node { + __le32 nid[NIDS_PER_BLOCK]; /* array of data block address */ +} __packed; + +enum { + COLD_BIT_SHIFT = 0, + FSYNC_BIT_SHIFT, + DENT_BIT_SHIFT, + OFFSET_BIT_SHIFT +}; + +struct node_footer { + __le32 nid; /* node id */ + __le32 ino; /* inode nunmber */ + __le32 flag; /* include cold/fsync/dentry marks and offset */ + __le64 cp_ver; /* checkpoint version */ + __le32 next_blkaddr; /* next node page block address */ +} __packed; + +struct f2fs_node { + /* can be one of three types: inode, direct, and indirect types */ + union { + struct f2fs_inode i; + struct direct_node dn; + struct indirect_node in; + }; + struct node_footer footer; +} __packed; + +/* + * For NAT entries + */ +#define NAT_ENTRY_PER_BLOCK (PAGE_CACHE_SIZE / sizeof(struct f2fs_nat_entry)) + +struct f2fs_nat_entry { + __u8 version; /* latest version of cached nat entry */ + __le32 ino; /* inode number */ + __le32 block_addr; /* block address */ +} __packed; + +struct f2fs_nat_block { + struct f2fs_nat_entry entries[NAT_ENTRY_PER_BLOCK]; +} __packed; + +/* + * For SIT entries + * + * Each segment is 2MB in size by default so that a bitmap for validity of + * there-in blocks should occupy 64 bytes, 512 bits. + * Not allow to change this. + */ +#define SIT_VBLOCK_MAP_SIZE 64 +#define SIT_ENTRY_PER_BLOCK (PAGE_CACHE_SIZE / sizeof(struct f2fs_sit_entry)) + +/* + * Note that f2fs_sit_entry->vblocks has the following bit-field information. + * [15:10] : allocation type such as CURSEG_XXXX_TYPE + * [9:0] : valid block count + */ +#define SIT_VBLOCKS_SHIFT 10 +#define SIT_VBLOCKS_MASK ((1 << SIT_VBLOCKS_SHIFT) - 1) +#define GET_SIT_VBLOCKS(raw_sit) \ + (le16_to_cpu((raw_sit)->vblocks) & SIT_VBLOCKS_MASK) +#define GET_SIT_TYPE(raw_sit) \ + ((le16_to_cpu((raw_sit)->vblocks) & ~SIT_VBLOCKS_MASK) \ + >> SIT_VBLOCKS_SHIFT) + +struct f2fs_sit_entry { + __le16 vblocks; /* reference above */ + __u8 valid_map[SIT_VBLOCK_MAP_SIZE]; /* bitmap for valid blocks */ + __le64 mtime; /* segment age for cleaning */ +} __packed; + +struct f2fs_sit_block { + struct f2fs_sit_entry entries[SIT_ENTRY_PER_BLOCK]; +} __packed; + +/* + * For segment summary + * + * One summary block contains exactly 512 summary entries, which represents + * exactly 2MB segment by default. Not allow to change the basic units. + * + * NOTE: For initializing fields, you must use set_summary + * + * - If data page, nid represents dnode's nid + * - If node page, nid represents the node page's nid. + * + * The ofs_in_node is used by only data page. It represents offset + * from node's page's beginning to get a data block address. + * ex) data_blkaddr = (block_t)(nodepage_start_address + ofs_in_node) + */ +#define ENTRIES_IN_SUM 512 +#define SUMMARY_SIZE (sizeof(struct f2fs_summary)) +#define SUM_FOOTER_SIZE (sizeof(struct summary_footer)) +#define SUM_ENTRY_SIZE (SUMMARY_SIZE * ENTRIES_IN_SUM) + +/* a summary entry for a 4KB-sized block in a segment */ +struct f2fs_summary { + __le32 nid; /* parent node id */ + union { + __u8 reserved[3]; + struct { + __u8 version; /* node version number */ + __le16 ofs_in_node; /* block index in parent node */ + } __packed; + }; +} __packed; + +/* summary block type, node or data, is stored to the summary_footer */ +#define SUM_TYPE_NODE (1) +#define SUM_TYPE_DATA (0) + +struct summary_footer { + unsigned char entry_type; /* SUM_TYPE_XXX */ + __u32 check_sum; /* summary checksum */ +} __packed; + +#define SUM_JOURNAL_SIZE (PAGE_CACHE_SIZE - SUM_FOOTER_SIZE -\ + SUM_ENTRY_SIZE) +#define NAT_JOURNAL_ENTRIES ((SUM_JOURNAL_SIZE - 2) /\ + sizeof(struct nat_journal_entry)) +#define NAT_JOURNAL_RESERVED ((SUM_JOURNAL_SIZE - 2) %\ + sizeof(struct nat_journal_entry)) +#define SIT_JOURNAL_ENTRIES ((SUM_JOURNAL_SIZE - 2) /\ + sizeof(struct sit_journal_entry)) +#define SIT_JOURNAL_RESERVED ((SUM_JOURNAL_SIZE - 2) %\ + sizeof(struct sit_journal_entry)) +/* + * frequently updated NAT/SIT entries can be stored in the spare area in + * summary blocks + */ +enum { + NAT_JOURNAL = 0, + SIT_JOURNAL +}; + +struct nat_journal_entry { + __le32 nid; + struct f2fs_nat_entry ne; +} __packed; + +struct nat_journal { + struct nat_journal_entry entries[NAT_JOURNAL_ENTRIES]; + __u8 reserved[NAT_JOURNAL_RESERVED]; +} __packed; + +struct sit_journal_entry { + __le32 segno; + struct f2fs_sit_entry se; +} __packed; + +struct sit_journal { + struct sit_journal_entry entries[SIT_JOURNAL_ENTRIES]; + __u8 reserved[SIT_JOURNAL_RESERVED]; +} __packed; + +/* 4KB-sized summary block structure */ +struct f2fs_summary_block { + struct f2fs_summary entries[ENTRIES_IN_SUM]; + union { + __le16 n_nats; + __le16 n_sits; + }; + /* spare area is used by NAT or SIT journals */ + union { + struct nat_journal nat_j; + struct sit_journal sit_j; + }; + struct summary_footer footer; +} __packed; + +/* + * For directory operations + */ +#define F2FS_DOT_HASH 0 +#define F2FS_DDOT_HASH F2FS_DOT_HASH +#define F2FS_MAX_HASH (~((0x3ULL) << 62)) +#define F2FS_HASH_COL_BIT ((0x1ULL) << 63) + +typedef __le32 f2fs_hash_t; + +/* One directory entry slot covers 8bytes-long file name */ +#define F2FS_NAME_LEN 8 + +/* the number of dentry in a block */ +#define NR_DENTRY_IN_BLOCK 214 + +/* MAX level for dir lookup */ +#define MAX_DIR_HASH_DEPTH 63 + +#define SIZE_OF_DIR_ENTRY 11 /* by byte */ +#define SIZE_OF_DENTRY_BITMAP ((NR_DENTRY_IN_BLOCK + BITS_PER_BYTE - 1) / \ + BITS_PER_BYTE) +#define SIZE_OF_RESERVED (PAGE_SIZE - ((SIZE_OF_DIR_ENTRY + \ + F2FS_NAME_LEN) * \ + NR_DENTRY_IN_BLOCK + SIZE_OF_DENTRY_BITMAP)) + +/* One directory entry slot representing F2FS_NAME_LEN-sized file name */ +struct f2fs_dir_entry { + __le32 hash_code; /* hash code of file name */ + __le32 ino; /* inode number */ + __le16 name_len; /* lengh of file name */ + __u8 file_type; /* file type */ +} __packed; + +/* 4KB-sized directory entry block */ +struct f2fs_dentry_block { + /* validity bitmap for directory entries in each block */ + __u8 dentry_bitmap[SIZE_OF_DENTRY_BITMAP]; + __u8 reserved[SIZE_OF_RESERVED]; + struct f2fs_dir_entry dentry[NR_DENTRY_IN_BLOCK]; + __u8 filename[NR_DENTRY_IN_BLOCK][F2FS_NAME_LEN]; +} __packed; + +/* file types used in inode_info->flags */ +enum { + F2FS_FT_UNKNOWN, + F2FS_FT_REG_FILE, + F2FS_FT_DIR, + F2FS_FT_CHRDEV, + F2FS_FT_BLKDEV, + F2FS_FT_FIFO, + F2FS_FT_SOCK, + F2FS_FT_SYMLINK, + F2FS_FT_MAX +}; + +#endif /* _LINUX_F2FS_FS_H */ -- cgit v1.2.3 From 25ca923b2a766b9c93b63777ead351137533a623 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Wed, 28 Nov 2012 16:12:41 +0900 Subject: f2fs: fix endian conversion bugs reported by sparse This patch should resolve the bugs reported by the sparse tool. Initial reports were written by "kbuild test robot" managed by fengguang.wu. In my local machines, I've tested also by running: > make C=2 CF="-D__CHECK_ENDIAN__" Accordingly, I've found lots of warnings and bugs related to the endian conversion. And I've fixed all at this moment. Signed-off-by: Jaegeuk Kim --- include/linux/f2fs_fs.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h index 1429ece7caab..c2fbbc35c1e6 100644 --- a/include/linux/f2fs_fs.h +++ b/include/linux/f2fs_fs.h @@ -272,8 +272,8 @@ struct f2fs_sit_block { * ex) data_blkaddr = (block_t)(nodepage_start_address + ofs_in_node) */ #define ENTRIES_IN_SUM 512 -#define SUMMARY_SIZE (sizeof(struct f2fs_summary)) -#define SUM_FOOTER_SIZE (sizeof(struct summary_footer)) +#define SUMMARY_SIZE (7) /* sizeof(struct summary) */ +#define SUM_FOOTER_SIZE (5) /* sizeof(struct summary_footer) */ #define SUM_ENTRY_SIZE (SUMMARY_SIZE * ENTRIES_IN_SUM) /* a summary entry for a 4KB-sized block in a segment */ @@ -297,7 +297,7 @@ struct summary_footer { __u32 check_sum; /* summary checksum */ } __packed; -#define SUM_JOURNAL_SIZE (PAGE_CACHE_SIZE - SUM_FOOTER_SIZE -\ +#define SUM_JOURNAL_SIZE (F2FS_BLKSIZE - SUM_FOOTER_SIZE -\ SUM_ENTRY_SIZE) #define NAT_JOURNAL_ENTRIES ((SUM_JOURNAL_SIZE - 2) /\ sizeof(struct nat_journal_entry)) -- cgit v1.2.3 From 457d08ee4fd91c8df17917ff2d32565e6adacbfc Mon Sep 17 00:00:00 2001 From: Namjae Jeon Date: Sat, 8 Dec 2012 14:54:50 +0900 Subject: f2fs: introduce accessor to retrieve number of dentry slots Simplify code by providing the accessor macro to retrieve the number of dentry slots for a given filename length. Signed-off-by: Namjae Jeon Signed-off-by: Amit Sahrawat --- include/linux/f2fs_fs.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h index c2fbbc35c1e6..f9a12f6243a5 100644 --- a/include/linux/f2fs_fs.h +++ b/include/linux/f2fs_fs.h @@ -363,6 +363,9 @@ typedef __le32 f2fs_hash_t; /* One directory entry slot covers 8bytes-long file name */ #define F2FS_NAME_LEN 8 +#define F2FS_NAME_LEN_BITS 3 + +#define GET_DENTRY_SLOTS(x) ((x + F2FS_NAME_LEN - 1) >> F2FS_NAME_LEN_BITS) /* the number of dentry in a block */ #define NR_DENTRY_IN_BLOCK 214 -- cgit v1.2.3 From 7c045a55c97fb83a2e5e9c6c857162c4866cc602 Mon Sep 17 00:00:00 2001 From: Mike Turquette Date: Tue, 4 Dec 2012 11:00:35 -0800 Subject: clk: introduce optional disable_unused callback Some gate clocks have special needs which must be handled during the disable-unused clocks sequence. These needs might be driven by software due to the fact that we're disabling a clock outside of the normal clk_disable path and a clk's enable_count will not be accurate. On the other hand a specific hardware programming sequence might need to be followed for this corner case. This change is needed for the upcoming OMAP port to the common clock framework. Specifically, it is undesirable to treat the disable-unused path identically to the normal clk_disable path since other software layers are involved. In this case OMAP's clockdomain code throws WARNs and bails early due to the clock's enable_count being set to zero. A custom callback mitigates this problem nicely. Cc: Paul Walmsley Acked-by: Ulf Hansson Acked-by: Linus Walleij Signed-off-by: Mike Turquette --- include/linux/clk-provider.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 3593a3ce3f0d..1c94d18514e2 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -57,6 +57,11 @@ struct clk_hw; * This function must not sleep. Optional, if this op is not * set then the enable count will be used. * + * @disable_unused: Disable the clock atomically. Only called from + * clk_disable_unused for gate clocks with special needs. + * Called with enable_lock held. This function must not + * sleep. + * * @recalc_rate Recalculate the rate of this clock, by querying hardware. The * parent rate is an input parameter. It is up to the caller to * ensure that the prepare_mutex is held across this call. @@ -106,6 +111,7 @@ struct clk_ops { int (*enable)(struct clk_hw *hw); void (*disable)(struct clk_hw *hw); int (*is_enabled)(struct clk_hw *hw); + void (*disable_unused)(struct clk_hw *hw); unsigned long (*recalc_rate)(struct clk_hw *hw, unsigned long parent_rate); long (*round_rate)(struct clk_hw *hw, unsigned long, -- cgit v1.2.3 From 4009793e15d44469da1547a46ab129cc08ffa503 Mon Sep 17 00:00:00 2001 From: Vitaly Andrianov Date: Wed, 5 Dec 2012 09:29:25 -0500 Subject: drivers: cma: represent physical addresses as phys_addr_t This commit changes the CMA early initialization code to use phys_addr_t for representing physical addresses instead of unsigned long. Without this change, among other things, dma_declare_contiguous() simply discards any memory regions whose address is not representable as unsigned long. This is a problem on 32-bit PAE machines where unsigned long is 32-bit but physical address space is larger. Signed-off-by: Vitaly Andrianov Signed-off-by: Cyril Chemparathy Acked-by: Michal Nazarewicz Signed-off-by: Marek Szyprowski --- include/linux/dma-contiguous.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dma-contiguous.h b/include/linux/dma-contiguous.h index 2f303e4b7ed3..01b5c84be828 100644 --- a/include/linux/dma-contiguous.h +++ b/include/linux/dma-contiguous.h @@ -68,7 +68,7 @@ struct device; extern struct cma *dma_contiguous_default_area; void dma_contiguous_reserve(phys_addr_t addr_limit); -int dma_declare_contiguous(struct device *dev, unsigned long size, +int dma_declare_contiguous(struct device *dev, phys_addr_t size, phys_addr_t base, phys_addr_t limit); struct page *dma_alloc_from_contiguous(struct device *dev, int count, @@ -83,7 +83,7 @@ bool dma_release_from_contiguous(struct device *dev, struct page *pages, static inline void dma_contiguous_reserve(phys_addr_t limit) { } static inline -int dma_declare_contiguous(struct device *dev, unsigned long size, +int dma_declare_contiguous(struct device *dev, phys_addr_t size, phys_addr_t base, phys_addr_t limit) { return -ENOSYS; -- cgit v1.2.3 From b0284de05e07d56ff7de154d0c9263788755f5eb Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Fri, 30 Nov 2012 10:09:42 +0000 Subject: ab8500_bm: Rename battery management platform data to something more logical The platform specific battery management configuration data structure is currently called 'bat' short for 'battery'; however, it contains information for all components of the battery management group, rather than information pertaining to the battery itself - there are other structures for that. So, in keeping with its structure namesake 'abx500_bm_data', we rename it to 'bm' here. Using similar logic, we're also renaming 'bmdevs_of_probe' to the more device specific 'ab8500_bm_of_probe'. Signed-off-by: Lee Jones --- include/linux/mfd/abx500.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h index 2138bd33021a..6ce749a0e9d4 100644 --- a/include/linux/mfd/abx500.h +++ b/include/linux/mfd/abx500.h @@ -279,9 +279,9 @@ enum { NTC_INTERNAL, }; -int bmdevs_of_probe(struct device *dev, - struct device_node *np, - struct abx500_bm_data **battery); +int ab8500_bm_of_probe(struct device *dev, + struct device_node *np, + struct abx500_bm_data **battery); int abx500_set_register_interruptible(struct device *dev, u8 bank, u8 reg, u8 value); -- cgit v1.2.3 From 23a04f9f40f2b32ee593b768483105b1c776814d Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Thu, 29 Nov 2012 15:08:41 +0000 Subject: ab8500_bm: Always send platform specific battery information via pdata Currently the AB8500 battery management subsystem receives platform specific information via two different means depending on how the platform is booted. If DT is not enabled, a reference to a *_bm_data data structure containing each platform specific attribute is passed though platform_data. However, if DT is enabled, then platform_data is empty and the reference is gained though a DT specific probe function. There are two issues here 1) the same reference is being collected each time and 2) the DT way doesn't allow any provisions to select different platform specific attributes, which kind of defeats the object. Cc: Samuel Ortiz Signed-off-by: Lee Jones --- include/linux/mfd/abx500.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h index 6ce749a0e9d4..4906b1842d2f 100644 --- a/include/linux/mfd/abx500.h +++ b/include/linux/mfd/abx500.h @@ -281,7 +281,7 @@ enum { int ab8500_bm_of_probe(struct device *dev, struct device_node *np, - struct abx500_bm_data **battery); + struct abx500_bm_data *bm); int abx500_set_register_interruptible(struct device *dev, u8 bank, u8 reg, u8 value); -- cgit v1.2.3 From 3c58346525d82625e68e24f071804c2dc057b6f4 Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Wed, 28 Nov 2012 16:23:01 +0000 Subject: slab: Simplify bootstrap The nodelists field in kmem_cache is pointing to the first unused object in the array field when bootstrap is complete. A problem with the current approach is that the statically sized kmem_cache structure use on boot can only contain NR_CPUS entries. If the number of nodes plus the number of cpus is greater then we would overwrite memory following the kmem_cache_boot definition. Increase the size of the array field to ensure that also the node pointers fit into the array field. Once we do that we no longer need the kmem_cache_nodelists array and we can then also use that structure elsewhere. Acked-by: Glauber Costa Signed-off-by: Christoph Lameter Signed-off-by: Pekka Enberg --- include/linux/slab_def.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h index cc290f0bdb34..45c0356fdc8c 100644 --- a/include/linux/slab_def.h +++ b/include/linux/slab_def.h @@ -89,9 +89,13 @@ struct kmem_cache { * (see kmem_cache_init()) * We still use [NR_CPUS] and not [1] or [0] because cache_cache * is statically defined, so we reserve the max number of cpus. + * + * We also need to guarantee that the list is able to accomodate a + * pointer for each node since "nodelists" uses the remainder of + * available pointers. */ struct kmem_list3 **nodelists; - struct array_cache *array[NR_CPUS]; + struct array_cache *array[NR_CPUS + MAX_NUMNODES]; /* * Do not add fields after array[] */ -- cgit v1.2.3 From 7da4d641c58d201c3cc1835c05ca1a7fa26f0856 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 19 Nov 2012 03:14:23 +0100 Subject: mm: Count the number of pages affected in change_protection() This will be used for three kinds of purposes: - to optimize mprotect() - to speed up working set scanning for working set areas that have not been touched - to more accurately scan per real working set No change in functionality from this patch. Suggested-by: Ingo Molnar Signed-off-by: Peter Zijlstra Cc: Linus Torvalds Cc: Andrew Morton Cc: Andrea Arcangeli Cc: Rik van Riel Cc: Mel Gorman Cc: Hugh Dickins Cc: Thomas Gleixner Signed-off-by: Ingo Molnar --- include/linux/hugetlb.h | 8 ++++++-- include/linux/mm.h | 3 +++ 2 files changed, 9 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 225164842ab6..06e691baab86 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -87,7 +87,7 @@ struct page *follow_huge_pud(struct mm_struct *mm, unsigned long address, pud_t *pud, int write); int pmd_huge(pmd_t pmd); int pud_huge(pud_t pmd); -void hugetlb_change_protection(struct vm_area_struct *vma, +unsigned long hugetlb_change_protection(struct vm_area_struct *vma, unsigned long address, unsigned long end, pgprot_t newprot); #else /* !CONFIG_HUGETLB_PAGE */ @@ -132,7 +132,11 @@ static inline void copy_huge_page(struct page *dst, struct page *src) { } -#define hugetlb_change_protection(vma, address, end, newprot) +static inline unsigned long hugetlb_change_protection(struct vm_area_struct *vma, + unsigned long address, unsigned long end, pgprot_t newprot) +{ + return 0; +} static inline void __unmap_hugepage_range_final(struct mmu_gather *tlb, struct vm_area_struct *vma, unsigned long start, diff --git a/include/linux/mm.h b/include/linux/mm.h index bcaab4e6fe91..1856c62d82cd 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1078,6 +1078,9 @@ extern unsigned long move_page_tables(struct vm_area_struct *vma, extern unsigned long do_mremap(unsigned long addr, unsigned long old_len, unsigned long new_len, unsigned long flags, unsigned long new_addr); +extern unsigned long change_protection(struct vm_area_struct *vma, unsigned long start, + unsigned long end, pgprot_t newprot, + int dirty_accountable); extern int mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev, unsigned long start, unsigned long end, unsigned long newflags); -- cgit v1.2.3 From 5647bc293ab15f66a7b1cda850c5e9d162a6c7c2 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Fri, 19 Oct 2012 10:46:20 +0100 Subject: mm: compaction: Move migration fail/success stats to migrate.c The compact_pages_moved and compact_pagemigrate_failed events are convenient for determining if compaction is active and to what degree migration is succeeding but it's at the wrong level. Other users of migration may also want to know if migration is working properly and this will be particularly true for any automated NUMA migration. This patch moves the counters down to migration with the new events called pgmigrate_success and pgmigrate_fail. The compact_blocks_moved counter is removed because while it was useful for debugging initially, it's worthless now as no meaningful conclusions can be drawn from its value. Signed-off-by: Mel Gorman Reviewed-by: Rik van Riel --- include/linux/vm_event_item.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index 3d3114594370..8aa7cb94b5fb 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -38,8 +38,10 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, KSWAPD_LOW_WMARK_HIT_QUICKLY, KSWAPD_HIGH_WMARK_HIT_QUICKLY, KSWAPD_SKIP_CONGESTION_WAIT, PAGEOUTRUN, ALLOCSTALL, PGROTATED, +#ifdef CONFIG_MIGRATION + PGMIGRATE_SUCCESS, PGMIGRATE_FAIL, +#endif #ifdef CONFIG_COMPACTION - COMPACTBLOCKS, COMPACTPAGES, COMPACTPAGEFAILED, COMPACTSTALL, COMPACTFAIL, COMPACTSUCCESS, #endif #ifdef CONFIG_HUGETLB_PAGE -- cgit v1.2.3 From 7b2a2d4a18fffac3c4872021529b0657896db788 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Fri, 19 Oct 2012 14:07:31 +0100 Subject: mm: migrate: Add a tracepoint for migrate_pages The pgmigrate_success and pgmigrate_fail vmstat counters tells the user about migration activity but not the type or the reason. This patch adds a tracepoint to identify the type of page migration and why the page is being migrated. Signed-off-by: Mel Gorman Reviewed-by: Rik van Riel --- include/linux/migrate.h | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/migrate.h b/include/linux/migrate.h index ce7e6671968b..9d1c159e2427 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -7,6 +7,15 @@ typedef struct page *new_page_t(struct page *, unsigned long private, int **); +enum migrate_reason { + MR_COMPACTION, + MR_MEMORY_FAILURE, + MR_MEMORY_HOTPLUG, + MR_SYSCALL, /* also applies to cpusets */ + MR_MEMPOLICY_MBIND, + MR_CMA +}; + #ifdef CONFIG_MIGRATION extern void putback_lru_pages(struct list_head *l); @@ -14,7 +23,7 @@ extern int migrate_page(struct address_space *, struct page *, struct page *, enum migrate_mode); extern int migrate_pages(struct list_head *l, new_page_t x, unsigned long private, bool offlining, - enum migrate_mode mode); + enum migrate_mode mode, int reason); extern int migrate_huge_page(struct page *, new_page_t x, unsigned long private, bool offlining, enum migrate_mode mode); @@ -35,7 +44,7 @@ extern int migrate_huge_page_move_mapping(struct address_space *mapping, static inline void putback_lru_pages(struct list_head *l) {} static inline int migrate_pages(struct list_head *l, new_page_t x, unsigned long private, bool offlining, - enum migrate_mode mode) { return -ENOSYS; } + enum migrate_mode mode, int reason) { return -ENOSYS; } static inline int migrate_huge_page(struct page *page, new_page_t x, unsigned long private, bool offlining, enum migrate_mode mode) { return -ENOSYS; } -- cgit v1.2.3 From 397487db696cae0b026a474a5cd66f4e372995e6 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Fri, 19 Oct 2012 12:00:10 +0100 Subject: mm: compaction: Add scanned and isolated counters for compaction Compaction already has tracepoints to count scanned and isolated pages but it requires that ftrace be enabled and if that information has to be written to disk then it can be disruptive. This patch adds vmstat counters for compaction called compact_migrate_scanned, compact_free_scanned and compact_isolated. With these counters, it is possible to define a basic cost model for compaction. This approximates of how much work compaction is doing and can be compared that with an oprofile showing TLB misses and see if the cost of compaction is being offset by THP for example. Minimally a compaction patch can be evaluated in terms of whether it increases or decreases cost. The basic cost model looks like this Fundamental unit u: a word sizeof(void *) Ca = cost of struct page access = sizeof(struct page) / u Cmc = Cost migrate page copy = (Ca + PAGE_SIZE/u) * 2 Cmf = Cost migrate failure = Ca * 2 Ci = Cost page isolation = (Ca + Wi) where Wi is a constant that should reflect the approximate cost of the locking operation. Csm = Cost migrate scanning = Ca Csf = Cost free scanning = Ca Overall cost = (Csm * compact_migrate_scanned) + (Csf * compact_free_scanned) + (Ci * compact_isolated) + (Cmc * pgmigrate_success) + (Cmf * pgmigrate_failed) Where the values are read from /proc/vmstat. This is very basic and ignores certain costs such as the allocation cost to do a migrate page copy but any improvement to the model would still use the same vmstat counters. Signed-off-by: Mel Gorman Reviewed-by: Rik van Riel --- include/linux/vm_event_item.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index 8aa7cb94b5fb..a1f750b8e72a 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -42,6 +42,8 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, PGMIGRATE_SUCCESS, PGMIGRATE_FAIL, #endif #ifdef CONFIG_COMPACTION + COMPACTMIGRATE_SCANNED, COMPACTFREE_SCANNED, + COMPACTISOLATED, COMPACTSTALL, COMPACTFAIL, COMPACTSUCCESS, #endif #ifdef CONFIG_HUGETLB_PAGE -- cgit v1.2.3 From 0b9d705297b273657923518dbea2377cd03532ed Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Fri, 5 Oct 2012 21:36:27 +0200 Subject: mm: numa: Support NUMA hinting page faults from gup/gup_fast Introduce FOLL_NUMA to tell follow_page to check pte/pmd_numa. get_user_pages must use FOLL_NUMA, and it's safe to do so because it always invokes handle_mm_fault and retries the follow_page later. KVM secondary MMU page faults will trigger the NUMA hinting page faults through gup_fast -> get_user_pages -> follow_page -> handle_mm_fault. Other follow_page callers like KSM should not use FOLL_NUMA, or they would fail to get the pages if they use follow_page instead of get_user_pages. [ This patch was picked up from the AutoNUMA tree. ] Originally-by: Andrea Arcangeli Cc: Linus Torvalds Cc: Andrew Morton Cc: Peter Zijlstra Cc: Andrea Arcangeli Cc: Rik van Riel [ ported to this tree. ] Signed-off-by: Ingo Molnar Reviewed-by: Rik van Riel --- include/linux/mm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 1856c62d82cd..fa1615211159 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1572,6 +1572,7 @@ struct page *follow_page(struct vm_area_struct *, unsigned long address, #define FOLL_MLOCK 0x40 /* mark page as mlocked */ #define FOLL_SPLIT 0x80 /* don't return transhuge pages, split them */ #define FOLL_HWPOISON 0x100 /* check page is hwpoisoned */ +#define FOLL_NUMA 0x200 /* force NUMA hinting page fault */ typedef int (*pte_fn_t)(pte_t *pte, pgtable_t token, unsigned long addr, void *data); -- cgit v1.2.3 From d10e63f29488b0f312a443f9507ea9b6fd3c9090 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Thu, 25 Oct 2012 14:16:31 +0200 Subject: mm: numa: Create basic numa page hinting infrastructure Note: This patch started as "mm/mpol: Create special PROT_NONE infrastructure" and preserves the basic idea but steals *very* heavily from "autonuma: numa hinting page faults entry points" for the actual fault handlers without the migration parts. The end result is barely recognisable as either patch so all Signed-off and Reviewed-bys are dropped. If Peter, Ingo and Andrea are ok with this version, I will re-add the signed-offs-by to reflect the history. In order to facilitate a lazy -- fault driven -- migration of pages, create a special transient PAGE_NUMA variant, we can then use the 'spurious' protection faults to drive our migrations from. The meaning of PAGE_NUMA depends on the architecture but on x86 it is effectively PROT_NONE. Actual PROT_NONE mappings will not generate these NUMA faults for the reason that the page fault code checks the permission on the VMA (and will throw a segmentation fault on actual PROT_NONE mappings), before it ever calls handle_mm_fault. [dhillf@gmail.com: Fix typo] Signed-off-by: Mel Gorman Reviewed-by: Rik van Riel --- include/linux/huge_mm.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index b31cb7da0346..a1d26a98c655 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -159,6 +159,10 @@ static inline struct page *compound_trans_head(struct page *page) } return page; } + +extern int do_huge_pmd_numa_page(struct mm_struct *mm, unsigned long addr, + pmd_t pmd, pmd_t *pmdp); + #else /* CONFIG_TRANSPARENT_HUGEPAGE */ #define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; }) #define HPAGE_PMD_MASK ({ BUILD_BUG(); 0; }) @@ -195,6 +199,12 @@ static inline int pmd_trans_huge_lock(pmd_t *pmd, { return 0; } + +static inline int do_huge_pmd_numa_page(struct mm_struct *mm, unsigned long addr, + pmd_t pmd, pmd_t *pmdp) +{ +} + #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ #endif /* _LINUX_HUGE_MM_H */ -- cgit v1.2.3 From 771fb4d806a92bf6c988fcfbd286ae40a9374332 Mon Sep 17 00:00:00 2001 From: Lee Schermerhorn Date: Thu, 25 Oct 2012 14:16:30 +0200 Subject: mm: mempolicy: Check for misplaced page This patch provides a new function to test whether a page resides on a node that is appropriate for the mempolicy for the vma and address where the page is supposed to be mapped. This involves looking up the node where the page belongs. So, the function returns that node so that it may be used to allocated the page without consulting the policy again. A subsequent patch will call this function from the fault path. Because of this, I don't want to go ahead and allocate the page, e.g., via alloc_page_vma() only to have to free it if it has the correct policy. So, I just mimic the alloc_page_vma() node computation logic--sort of. Note: we could use this function to implement a MPOL_MF_STRICT behavior when migrating pages to match mbind() mempolicy--e.g., to ensure that pages in an interleaved range are reinterleaved rather than left where they are when they reside on any page in the interleave nodemask. Signed-off-by: Lee Schermerhorn Reviewed-by: Rik van Riel Cc: Andrew Morton Cc: Linus Torvalds [ Added MPOL_F_LAZY to trigger migrate-on-fault; simplified code now that we don't have to bother with special crap for interleaved ] Signed-off-by: Peter Zijlstra Signed-off-by: Ingo Molnar Signed-off-by: Mel Gorman --- include/linux/mempolicy.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h index e5ccb9ddd90e..c511e2523560 100644 --- a/include/linux/mempolicy.h +++ b/include/linux/mempolicy.h @@ -198,6 +198,8 @@ static inline int vma_migratable(struct vm_area_struct *vma) return 1; } +extern int mpol_misplaced(struct page *, struct vm_area_struct *, unsigned long); + #else struct mempolicy {}; @@ -323,5 +325,11 @@ static inline int mpol_to_str(char *buffer, int maxlen, struct mempolicy *pol, return 0; } +static inline int mpol_misplaced(struct page *page, struct vm_area_struct *vma, + unsigned long address) +{ + return -1; /* no node preference */ +} + #endif /* CONFIG_NUMA */ #endif -- cgit v1.2.3 From 7039e1dbec6eeaa8ecab43a82d6589eeced995c3 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 25 Oct 2012 14:16:34 +0200 Subject: mm: migrate: Introduce migrate_misplaced_page() Note: This was originally based on Peter's patch "mm/migrate: Introduce migrate_misplaced_page()" but borrows extremely heavily from Andrea's "autonuma: memory follows CPU algorithm and task/mm_autonuma stats collection". The end result is barely recognisable so signed-offs had to be dropped. If original authors are ok with it, I'll re-add the signed-off-bys. Add migrate_misplaced_page() which deals with migrating pages from faults. Based-on-work-by: Lee Schermerhorn Based-on-work-by: Peter Zijlstra Based-on-work-by: Andrea Arcangeli Signed-off-by: Mel Gorman Reviewed-by: Rik van Riel --- include/linux/migrate.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 9d1c159e2427..f0d0313eea6f 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -13,6 +13,7 @@ enum migrate_reason { MR_MEMORY_HOTPLUG, MR_SYSCALL, /* also applies to cpusets */ MR_MEMPOLICY_MBIND, + MR_NUMA_MISPLACED, MR_CMA }; @@ -73,4 +74,14 @@ static inline int migrate_huge_page_move_mapping(struct address_space *mapping, #define fail_migrate_page NULL #endif /* CONFIG_MIGRATION */ + +#ifdef CONFIG_NUMA_BALANCING +extern int migrate_misplaced_page(struct page *page, int node); +#else +static inline int migrate_misplaced_page(struct page *page, int node) +{ + return -EAGAIN; /* can't migrate now */ +} +#endif /* CONFIG_NUMA_BALANCING */ + #endif /* _LINUX_MIGRATE_H */ -- cgit v1.2.3 From 4daae3b4b9e49b7e0935499a352f1c59d90287d2 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Fri, 2 Nov 2012 11:33:45 +0000 Subject: mm: mempolicy: Use _PAGE_NUMA to migrate pages Note: Based on "mm/mpol: Use special PROT_NONE to migrate pages" but sufficiently different that the signed-off-bys were dropped Combine our previous _PAGE_NUMA, mpol_misplaced and migrate_misplaced_page() pieces into an effective migrate on fault scheme. Note that (on x86) we rely on PROT_NONE pages being !present and avoid the TLB flush from try_to_unmap(TTU_MIGRATION). This greatly improves the page-migration performance. Based-on-work-by: Peter Zijlstra Signed-off-by: Mel Gorman --- include/linux/huge_mm.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index a1d26a98c655..dabb5108d6c0 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -160,8 +160,8 @@ static inline struct page *compound_trans_head(struct page *page) return page; } -extern int do_huge_pmd_numa_page(struct mm_struct *mm, unsigned long addr, - pmd_t pmd, pmd_t *pmdp); +extern int do_huge_pmd_numa_page(struct mm_struct *mm, struct vm_area_struct *vma, + unsigned long addr, pmd_t pmd, pmd_t *pmdp); #else /* CONFIG_TRANSPARENT_HUGEPAGE */ #define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; }) @@ -200,9 +200,10 @@ static inline int pmd_trans_huge_lock(pmd_t *pmd, return 0; } -static inline int do_huge_pmd_numa_page(struct mm_struct *mm, unsigned long addr, - pmd_t pmd, pmd_t *pmdp) +static inline int do_huge_pmd_numa_page(struct mm_struct *mm, struct vm_area_struct *vma, + unsigned long addr, pmd_t pmd, pmd_t *pmdp) { + return 0; } #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ -- cgit v1.2.3 From b24f53a0bea38b266d219ee651b22dba727c44ae Mon Sep 17 00:00:00 2001 From: Lee Schermerhorn Date: Thu, 25 Oct 2012 14:16:32 +0200 Subject: mm: mempolicy: Add MPOL_MF_LAZY NOTE: Once again there is a lot of patch stealing and the end result is sufficiently different that I had to drop the signed-offs. Will re-add if the original authors are ok with that. This patch adds another mbind() flag to request "lazy migration". The flag, MPOL_MF_LAZY, modifies MPOL_MF_MOVE* such that the selected pages are marked PROT_NONE. The pages will be migrated in the fault path on "first touch", if the policy dictates at that time. "Lazy Migration" will allow testing of migrate-on-fault via mbind(). Also allows applications to specify that only subsequently touched pages be migrated to obey new policy, instead of all pages in range. This can be useful for multi-threaded applications working on a large shared data area that is initialized by an initial thread resulting in all pages on one [or a few, if overflowed] nodes. After PROT_NONE, the pages in regions assigned to the worker threads will be automatically migrated local to the threads on 1st touch. Signed-off-by: Mel Gorman Reviewed-by: Rik van Riel --- include/linux/mm.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index fa1615211159..471185e29bab 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1551,6 +1551,11 @@ static inline pgprot_t vm_get_page_prot(unsigned long vm_flags) } #endif +#ifdef CONFIG_ARCH_USES_NUMA_PROT_NONE +void change_prot_numa(struct vm_area_struct *vma, + unsigned long start, unsigned long end); +#endif + struct vm_area_struct *find_extend_vma(struct mm_struct *, unsigned long addr); int remap_pfn_range(struct vm_area_struct *, unsigned long addr, unsigned long pfn, unsigned long size, pgprot_t); -- cgit v1.2.3 From 4b10e7d562c90d0a72f324832c26653947a07381 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Thu, 25 Oct 2012 14:16:32 +0200 Subject: mm: mempolicy: Implement change_prot_numa() in terms of change_protection() This patch converts change_prot_numa() to use change_protection(). As pte_numa and friends check the PTE bits directly it is necessary for change_protection() to use pmd_mknuma(). Hence the required modifications to change_protection() are a little clumsy but the end result is that most of the numa page table helpers are just one or two instructions. Signed-off-by: Mel Gorman --- include/linux/huge_mm.h | 3 ++- include/linux/mm.h | 4 ++-- 2 files changed, 4 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index dabb5108d6c0..027ad04ef3a8 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -27,7 +27,8 @@ extern int move_huge_pmd(struct vm_area_struct *vma, unsigned long new_addr, unsigned long old_end, pmd_t *old_pmd, pmd_t *new_pmd); extern int change_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd, - unsigned long addr, pgprot_t newprot); + unsigned long addr, pgprot_t newprot, + int prot_numa); enum transparent_hugepage_flag { TRANSPARENT_HUGEPAGE_FLAG, diff --git a/include/linux/mm.h b/include/linux/mm.h index 471185e29bab..d04c2f0aab36 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1080,7 +1080,7 @@ extern unsigned long do_mremap(unsigned long addr, unsigned long flags, unsigned long new_addr); extern unsigned long change_protection(struct vm_area_struct *vma, unsigned long start, unsigned long end, pgprot_t newprot, - int dirty_accountable); + int dirty_accountable, int prot_numa); extern int mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev, unsigned long start, unsigned long end, unsigned long newflags); @@ -1552,7 +1552,7 @@ static inline pgprot_t vm_get_page_prot(unsigned long vm_flags) #endif #ifdef CONFIG_ARCH_USES_NUMA_PROT_NONE -void change_prot_numa(struct vm_area_struct *vma, +unsigned long change_prot_numa(struct vm_area_struct *vma, unsigned long start, unsigned long end); #endif -- cgit v1.2.3 From cbee9f88ec1b8dd6b58f25f54e4f52c82ed77690 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 25 Oct 2012 14:16:43 +0200 Subject: mm: numa: Add fault driven placement and migration NOTE: This patch is based on "sched, numa, mm: Add fault driven placement and migration policy" but as it throws away all the policy to just leave a basic foundation I had to drop the signed-offs-by. This patch creates a bare-bones method for setting PTEs pte_numa in the context of the scheduler that when faulted later will be faulted onto the node the CPU is running on. In itself this does nothing useful but any placement policy will fundamentally depend on receiving hints on placement from fault context and doing something intelligent about it. Signed-off-by: Mel Gorman Acked-by: Rik van Riel --- include/linux/mm_types.h | 11 +++++++++++ include/linux/sched.h | 20 ++++++++++++++++++++ 2 files changed, 31 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 31f8a3af7d94..ed8638c29b3e 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -397,6 +397,17 @@ struct mm_struct { #endif #ifdef CONFIG_CPUMASK_OFFSTACK struct cpumask cpumask_allocation; +#endif +#ifdef CONFIG_NUMA_BALANCING + /* + * numa_next_scan is the next time when the PTEs will me marked + * pte_numa to gather statistics and migrate pages to new nodes + * if necessary + */ + unsigned long numa_next_scan; + + /* numa_scan_seq prevents two threads setting pte_numa */ + int numa_scan_seq; #endif struct uprobes_state uprobes_state; }; diff --git a/include/linux/sched.h b/include/linux/sched.h index 0dd42a02df2e..844af5b12cb2 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1479,6 +1479,14 @@ struct task_struct { short il_next; short pref_node_fork; #endif +#ifdef CONFIG_NUMA_BALANCING + int numa_scan_seq; + int numa_migrate_seq; + unsigned int numa_scan_period; + u64 node_stamp; /* migration stamp */ + struct callback_head numa_work; +#endif /* CONFIG_NUMA_BALANCING */ + struct rcu_head rcu; /* @@ -1553,6 +1561,14 @@ struct task_struct { /* Future-safe accessor for struct task_struct's cpus_allowed. */ #define tsk_cpus_allowed(tsk) (&(tsk)->cpus_allowed) +#ifdef CONFIG_NUMA_BALANCING +extern void task_numa_fault(int node, int pages); +#else +static inline void task_numa_fault(int node, int pages) +{ +} +#endif + /* * Priority of a process goes from 0..MAX_PRIO-1, valid RT * priority is 0..MAX_RT_PRIO-1, and SCHED_NORMAL/SCHED_BATCH @@ -1990,6 +2006,10 @@ enum sched_tunable_scaling { }; extern enum sched_tunable_scaling sysctl_sched_tunable_scaling; +extern unsigned int sysctl_numa_balancing_scan_period_min; +extern unsigned int sysctl_numa_balancing_scan_period_max; +extern unsigned int sysctl_numa_balancing_settle_count; + #ifdef CONFIG_SCHED_DEBUG extern unsigned int sysctl_sched_migration_cost; extern unsigned int sysctl_sched_nr_migrate; -- cgit v1.2.3 From 6e5fb223e89dbe5cb5c563f8d4a4a0a7d62455a8 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 25 Oct 2012 14:16:45 +0200 Subject: mm: sched: numa: Implement constant, per task Working Set Sampling (WSS) rate Previously, to probe the working set of a task, we'd use a very simple and crude method: mark all of its address space PROT_NONE. That method has various (obvious) disadvantages: - it samples the working set at dissimilar rates, giving some tasks a sampling quality advantage over others. - creates performance problems for tasks with very large working sets - over-samples processes with large address spaces but which only very rarely execute Improve that method by keeping a rotating offset into the address space that marks the current position of the scan, and advance it by a constant rate (in a CPU cycles execution proportional manner). If the offset reaches the last mapped address of the mm then it then it starts over at the first address. The per-task nature of the working set sampling functionality in this tree allows such constant rate, per task, execution-weight proportional sampling of the working set, with an adaptive sampling interval/frequency that goes from once per 100ms up to just once per 8 seconds. The current sampling volume is 256 MB per interval. As tasks mature and converge their working set, so does the sampling rate slow down to just a trickle, 256 MB per 8 seconds of CPU time executed. This, beyond being adaptive, also rate-limits rarely executing systems and does not over-sample on overloaded systems. [ In AutoNUMA speak, this patch deals with the effective sampling rate of the 'hinting page fault'. AutoNUMA's scanning is currently rate-limited, but it is also fundamentally single-threaded, executing in the knuma_scand kernel thread, so the limit in AutoNUMA is global and does not scale up with the number of CPUs, nor does it scan tasks in an execution proportional manner. So the idea of rate-limiting the scanning was first implemented in the AutoNUMA tree via a global rate limit. This patch goes beyond that by implementing an execution rate proportional working set sampling rate that is not implemented via a single global scanning daemon. ] [ Dan Carpenter pointed out a possible NULL pointer dereference in the first version of this patch. ] Based-on-idea-by: Andrea Arcangeli Bug-Found-By: Dan Carpenter Signed-off-by: Peter Zijlstra Cc: Linus Torvalds Cc: Andrew Morton Cc: Peter Zijlstra Cc: Andrea Arcangeli Cc: Rik van Riel [ Wrote changelog and fixed bug. ] Signed-off-by: Ingo Molnar Signed-off-by: Mel Gorman Reviewed-by: Rik van Riel --- include/linux/mm_types.h | 3 +++ include/linux/sched.h | 1 + 2 files changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index ed8638c29b3e..d1e246c5e50c 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -406,6 +406,9 @@ struct mm_struct { */ unsigned long numa_next_scan; + /* Restart point for scanning and setting pte_numa */ + unsigned long numa_scan_offset; + /* numa_scan_seq prevents two threads setting pte_numa */ int numa_scan_seq; #endif diff --git a/include/linux/sched.h b/include/linux/sched.h index 844af5b12cb2..37841958d234 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2008,6 +2008,7 @@ extern enum sched_tunable_scaling sysctl_sched_tunable_scaling; extern unsigned int sysctl_numa_balancing_scan_period_min; extern unsigned int sysctl_numa_balancing_scan_period_max; +extern unsigned int sysctl_numa_balancing_scan_size; extern unsigned int sysctl_numa_balancing_settle_count; #ifdef CONFIG_SCHED_DEBUG -- cgit v1.2.3 From 4b96a29ba891dd59734cb7be80a900fe93aa2d9f Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 25 Oct 2012 14:16:47 +0200 Subject: mm: sched: numa: Implement slow start for working set sampling Add a 1 second delay before starting to scan the working set of a task and starting to balance it amongst nodes. [ note that before the constant per task WSS sampling rate patch the initial scan would happen much later still, in effect that patch caused this regression. ] The theory is that short-run tasks benefit very little from NUMA placement: they come and go, and they better stick to the node they were started on. As tasks mature and rebalance to other CPUs and nodes, so does their NUMA placement have to change and so does it start to matter more and more. In practice this change fixes an observable kbuild regression: # [ a perf stat --null --repeat 10 test of ten bzImage builds to /dev/shm ] !NUMA: 45.291088843 seconds time elapsed ( +- 0.40% ) 45.154231752 seconds time elapsed ( +- 0.36% ) +NUMA, no slow start: 46.172308123 seconds time elapsed ( +- 0.30% ) 46.343168745 seconds time elapsed ( +- 0.25% ) +NUMA, 1 sec slow start: 45.224189155 seconds time elapsed ( +- 0.25% ) 45.160866532 seconds time elapsed ( +- 0.17% ) and it also fixes an observable perf bench (hackbench) regression: # perf stat --null --repeat 10 perf bench sched messaging -NUMA: -NUMA: 0.246225691 seconds time elapsed ( +- 1.31% ) +NUMA no slow start: 0.252620063 seconds time elapsed ( +- 1.13% ) +NUMA 1sec delay: 0.248076230 seconds time elapsed ( +- 1.35% ) The implementation is simple and straightforward, most of the patch deals with adding the /proc/sys/kernel/numa_balancing_scan_delay_ms tunable knob. Signed-off-by: Peter Zijlstra Cc: Linus Torvalds Cc: Andrew Morton Cc: Peter Zijlstra Cc: Andrea Arcangeli Cc: Rik van Riel [ Wrote the changelog, ran measurements, tuned the default. ] Signed-off-by: Ingo Molnar Signed-off-by: Mel Gorman Reviewed-by: Rik van Riel --- include/linux/sched.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 37841958d234..7d95a232b5b9 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2006,6 +2006,7 @@ enum sched_tunable_scaling { }; extern enum sched_tunable_scaling sysctl_sched_tunable_scaling; +extern unsigned int sysctl_numa_balancing_scan_delay; extern unsigned int sysctl_numa_balancing_scan_period_min; extern unsigned int sysctl_numa_balancing_scan_period_max; extern unsigned int sysctl_numa_balancing_scan_size; -- cgit v1.2.3 From 03c5a6e16322c997bf8f264851bfa3f532ad515f Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Fri, 2 Nov 2012 14:52:48 +0000 Subject: mm: numa: Add pte updates, hinting and migration stats It is tricky to quantify the basic cost of automatic NUMA placement in a meaningful manner. This patch adds some vmstats that can be used as part of a basic costing model. u = basic unit = sizeof(void *) Ca = cost of struct page access = sizeof(struct page) / u Cpte = Cost PTE access = Ca Cupdate = Cost PTE update = (2 * Cpte) + (2 * Wlock) where Cpte is incurred twice for a read and a write and Wlock is a constant representing the cost of taking or releasing a lock Cnumahint = Cost of a minor page fault = some high constant e.g. 1000 Cpagerw = Cost to read or write a full page = Ca + PAGE_SIZE/u Ci = Cost of page isolation = Ca + Wi where Wi is a constant that should reflect the approximate cost of the locking operation Cpagecopy = Cpagerw + (Cpagerw * Wnuma) + Ci + (Ci * Wnuma) where Wnuma is the approximate NUMA factor. 1 is local. 1.2 would imply that remote accesses are 20% more expensive Balancing cost = Cpte * numa_pte_updates + Cnumahint * numa_hint_faults + Ci * numa_pages_migrated + Cpagecopy * numa_pages_migrated Note that numa_pages_migrated is used as a measure of how many pages were isolated even though it would miss pages that failed to migrate. A vmstat counter could have been added for it but the isolation cost is pretty marginal in comparison to the overall cost so it seemed overkill. The ideal way to measure automatic placement benefit would be to count the number of remote accesses versus local accesses and do something like benefit = (remote_accesses_before - remove_access_after) * Wnuma but the information is not readily available. As a workload converges, the expection would be that the number of remote numa hints would reduce to 0. convergence = numa_hint_faults_local / numa_hint_faults where this is measured for the last N number of numa hints recorded. When the workload is fully converged the value is 1. This can measure if the placement policy is converging and how fast it is doing it. Signed-off-by: Mel Gorman Acked-by: Rik van Riel --- include/linux/vm_event_item.h | 6 ++++++ include/linux/vmstat.h | 8 ++++++++ 2 files changed, 14 insertions(+) (limited to 'include/linux') diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index a1f750b8e72a..55600049e794 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -38,6 +38,12 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, KSWAPD_LOW_WMARK_HIT_QUICKLY, KSWAPD_HIGH_WMARK_HIT_QUICKLY, KSWAPD_SKIP_CONGESTION_WAIT, PAGEOUTRUN, ALLOCSTALL, PGROTATED, +#ifdef CONFIG_NUMA_BALANCING + NUMA_PTE_UPDATES, + NUMA_HINT_FAULTS, + NUMA_HINT_FAULTS_LOCAL, + NUMA_PAGE_MIGRATE, +#endif #ifdef CONFIG_MIGRATION PGMIGRATE_SUCCESS, PGMIGRATE_FAIL, #endif diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index 92a86b2cce33..a13291f7da88 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -80,6 +80,14 @@ static inline void vm_events_fold_cpu(int cpu) #endif /* CONFIG_VM_EVENT_COUNTERS */ +#ifdef CONFIG_NUMA_BALANCING +#define count_vm_numa_event(x) count_vm_event(x) +#define count_vm_numa_events(x, y) count_vm_events(x, y) +#else +#define count_vm_numa_event(x) do {} while (0) +#define count_vm_numa_events(x, y) do {} while (0) +#endif /* CONFIG_NUMA_BALANCING */ + #define __count_zone_vm_events(item, zone, delta) \ __count_vm_events(item##_NORMAL - ZONE_NORMAL + \ zone_idx(zone), delta) -- cgit v1.2.3 From 8177a420ed7c16c171ed3c3aec5b0676db38c247 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Fri, 23 Mar 2012 20:56:34 +0100 Subject: mm: numa: Structures for Migrate On Fault per NUMA migration rate limiting This defines the per-node data used by Migrate On Fault in order to rate limit the migration. The rate limiting is applied independently to each destination node. Signed-off-by: Andrea Arcangeli Signed-off-by: Mel Gorman --- include/linux/mmzone.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index a23923ba8263..28601fdfcdb2 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -717,6 +717,19 @@ typedef struct pglist_data { struct task_struct *kswapd; /* Protected by lock_memory_hotplug() */ int kswapd_max_order; enum zone_type classzone_idx; +#ifdef CONFIG_NUMA_BALANCING + /* + * Lock serializing the per destination node AutoNUMA memory + * migration rate limiting data. + */ + spinlock_t numabalancing_migrate_lock; + + /* Rate limiting time interval */ + unsigned long numabalancing_migrate_next_window; + + /* Number of pages migrated during the rate limiting time interval */ + unsigned long numabalancing_migrate_nr_pages; +#endif } pg_data_t; #define node_present_pages(nid) (NODE_DATA(nid)->node_present_pages) -- cgit v1.2.3 From e14808b49f55e0e1135da5e4a154a540dd9f3662 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Mon, 19 Nov 2012 10:59:15 +0000 Subject: mm: numa: Rate limit setting of pte_numa if node is saturated If there are a large number of NUMA hinting faults and all of them are resulting in migrations it may indicate that memory is just bouncing uselessly around. NUMA balancing cost is likely exceeding any benefit from locality. Rate limit the PTE updates if the node is migration rate-limited. As noted in the comments, this distorts the NUMA faulting statistics. Signed-off-by: Mel Gorman --- include/linux/migrate.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/migrate.h b/include/linux/migrate.h index f0d0313eea6f..91556889adac 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -77,11 +77,17 @@ static inline int migrate_huge_page_move_mapping(struct address_space *mapping, #ifdef CONFIG_NUMA_BALANCING extern int migrate_misplaced_page(struct page *page, int node); +extern int migrate_misplaced_page(struct page *page, int node); +extern bool migrate_ratelimited(int node); #else static inline int migrate_misplaced_page(struct page *page, int node) { return -EAGAIN; /* can't migrate now */ } +static inline bool migrate_ratelimited(int node) +{ + return false; +} #endif /* CONFIG_NUMA_BALANCING */ #endif /* _LINUX_MIGRATE_H */ -- cgit v1.2.3 From 57e0a0309160b1b4ebde9f3c6a867cd96ac368bf Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Mon, 12 Nov 2012 09:06:20 +0000 Subject: mm: numa: Introduce last_nid to the page frame This patch introduces a last_nid field to the page struct. This is used to build a two-stage filter in the next patch that is aimed at mitigating a problem whereby pages migrate to the wrong node when referenced by a process that was running off its home node. Signed-off-by: Mel Gorman --- include/linux/mm.h | 30 ++++++++++++++++++++++++++++++ include/linux/mm_types.h | 4 ++++ 2 files changed, 34 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index d04c2f0aab36..d87f9ec4a145 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -693,6 +693,36 @@ static inline int page_to_nid(const struct page *page) } #endif +#ifdef CONFIG_NUMA_BALANCING +static inline int page_xchg_last_nid(struct page *page, int nid) +{ + return xchg(&page->_last_nid, nid); +} + +static inline int page_last_nid(struct page *page) +{ + return page->_last_nid; +} +static inline void reset_page_last_nid(struct page *page) +{ + page->_last_nid = -1; +} +#else +static inline int page_xchg_last_nid(struct page *page, int nid) +{ + return page_to_nid(page); +} + +static inline int page_last_nid(struct page *page) +{ + return page_to_nid(page); +} + +static inline void reset_page_last_nid(struct page *page) +{ +} +#endif + static inline struct zone *page_zone(const struct page *page) { return &NODE_DATA(page_to_nid(page))->node_zones[page_zonenum(page)]; diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index d1e246c5e50c..c5fffa239861 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -175,6 +175,10 @@ struct page { */ void *shadow; #endif + +#ifdef CONFIG_NUMA_BALANCING + int _last_nid; +#endif } /* * The struct page can be forced to be double word aligned so that atomic ops -- cgit v1.2.3 From b8593bfda1652755136333cdd362de125b283a9c Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Wed, 21 Nov 2012 01:18:23 +0000 Subject: mm: sched: Adapt the scanning rate if a NUMA hinting fault does not migrate The PTE scanning rate and fault rates are two of the biggest sources of system CPU overhead with automatic NUMA placement. Ideally a proper policy would detect if a workload was properly placed, schedule and adjust the PTE scanning rate accordingly. We do not track the necessary information to do that but we at least know if we migrated or not. This patch scans slower if a page was not migrated as the result of a NUMA hinting fault up to sysctl_numa_balancing_scan_period_max which is now higher than the previous default. Once every minute it will reset the scanner in case of phase changes. This is hilariously crude and the numbers are arbitrary. Workloads will converge quite slowly in comparison to what a proper policy should be able to do. On the plus side, we will chew up less CPU for workloads that have no need for automatic balancing. Signed-off-by: Mel Gorman --- include/linux/mm_types.h | 3 +++ include/linux/sched.h | 5 +++-- 2 files changed, 6 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index c5fffa239861..e850a23dd6ec 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -410,6 +410,9 @@ struct mm_struct { */ unsigned long numa_next_scan; + /* numa_next_reset is when the PTE scanner period will be reset */ + unsigned long numa_next_reset; + /* Restart point for scanning and setting pte_numa */ unsigned long numa_scan_offset; diff --git a/include/linux/sched.h b/include/linux/sched.h index 7d95a232b5b9..0f4ff2bd03f6 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1562,9 +1562,9 @@ struct task_struct { #define tsk_cpus_allowed(tsk) (&(tsk)->cpus_allowed) #ifdef CONFIG_NUMA_BALANCING -extern void task_numa_fault(int node, int pages); +extern void task_numa_fault(int node, int pages, bool migrated); #else -static inline void task_numa_fault(int node, int pages) +static inline void task_numa_fault(int node, int pages, bool migrated) { } #endif @@ -2009,6 +2009,7 @@ extern enum sched_tunable_scaling sysctl_sched_tunable_scaling; extern unsigned int sysctl_numa_balancing_scan_delay; extern unsigned int sysctl_numa_balancing_scan_period_min; extern unsigned int sysctl_numa_balancing_scan_period_max; +extern unsigned int sysctl_numa_balancing_scan_period_reset; extern unsigned int sysctl_numa_balancing_scan_size; extern unsigned int sysctl_numa_balancing_settle_count; -- cgit v1.2.3 From 1a687c2e9a99335c9e77392f050fe607fa18a652 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Thu, 22 Nov 2012 11:16:36 +0000 Subject: mm: sched: numa: Control enabling and disabling of NUMA balancing This patch adds Kconfig options and kernel parameters to allow the enabling and disabling of automatic NUMA balancing. The existance of such a switch was and is very important when debugging problems related to transparent hugepages and we should have the same for automatic NUMA placement. Signed-off-by: Mel Gorman --- include/linux/sched.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 0f4ff2bd03f6..b1e619f9ff1a 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1563,10 +1563,14 @@ struct task_struct { #ifdef CONFIG_NUMA_BALANCING extern void task_numa_fault(int node, int pages, bool migrated); +extern void set_numabalancing_state(bool enabled); #else static inline void task_numa_fault(int node, int pages, bool migrated) { } +static inline void set_numabalancing_state(bool enabled) +{ +} #endif /* -- cgit v1.2.3 From 5bca23035391928c4c7301835accca3551b96cc2 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Thu, 22 Nov 2012 14:40:03 +0000 Subject: mm: sched: numa: Delay PTE scanning until a task is scheduled on a new node Due to the fact that migrations are driven by the CPU a task is running on there is no point tracking NUMA faults until one task runs on a new node. This patch tracks the first node used by an address space. Until it changes, PTE scanning is disabled and no NUMA hinting faults are trapped. This should help workloads that are short-lived, do not care about NUMA placement or have bound themselves to a single node. This takes advantage of the logic in "mm: sched: numa: Implement slow start for working set sampling" to delay when the checks are made. This will take advantage of processes that set their CPU and node bindings early in their lifetime. It will also potentially allow any initial load balancing to take place. Signed-off-by: Mel Gorman --- include/linux/mm_types.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index e850a23dd6ec..197422a1598c 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -418,10 +418,20 @@ struct mm_struct { /* numa_scan_seq prevents two threads setting pte_numa */ int numa_scan_seq; + + /* + * The first node a task was scheduled on. If a task runs on + * a different node than Make PTE Scan Go Now. + */ + int first_nid; #endif struct uprobes_state uprobes_state; }; +/* first nid will either be a valid NID or one of these values */ +#define NUMA_PTE_SCAN_INIT -1 +#define NUMA_PTE_SCAN_ACTIVE -2 + static inline void mm_init_cpumask(struct mm_struct *mm) { #ifdef CONFIG_CPUMASK_OFFSTACK -- cgit v1.2.3 From b32967ff101a7508f70be8de59b278d4df92fa00 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Mon, 19 Nov 2012 12:35:47 +0000 Subject: mm: numa: Add THP migration for the NUMA working set scanning fault case. Note: This is very heavily based on a patch from Peter Zijlstra with fixes from Ingo Molnar, Hugh Dickins and Johannes Weiner. That patch put a lot of migration logic into mm/huge_memory.c where it does not belong. This version puts tries to share some of the migration logic with migrate_misplaced_page. However, it should be noted that now migrate.c is doing more with the pagetable manipulation than is preferred. The end result is barely recognisable so as before, the signed-offs had to be removed but will be re-added if the original authors are ok with it. Add THP migration for the NUMA working set scanning fault case. It uses the page lock to serialize. No migration pte dance is necessary because the pte is already unmapped when we decide to migrate. [dhillf@gmail.com: Fix memory leak on isolation failure] [dhillf@gmail.com: Fix transfer of last_nid information] Signed-off-by: Mel Gorman --- include/linux/migrate.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/linux') diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 91556889adac..51eac4bdc606 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -79,6 +79,12 @@ static inline int migrate_huge_page_move_mapping(struct address_space *mapping, extern int migrate_misplaced_page(struct page *page, int node); extern int migrate_misplaced_page(struct page *page, int node); extern bool migrate_ratelimited(int node); +extern int migrate_misplaced_transhuge_page(struct mm_struct *mm, + struct vm_area_struct *vma, + pmd_t *pmd, pmd_t entry, + unsigned long address, + struct page *page, int node); + #else static inline int migrate_misplaced_page(struct page *page, int node) { @@ -88,6 +94,15 @@ static inline bool migrate_ratelimited(int node) { return false; } + +static inline int migrate_misplaced_transhuge_page(struct mm_struct *mm, + struct vm_area_struct *vma, + pmd_t *pmd, pmd_t entry, + unsigned long address, + struct page *page, int node) +{ + return -EAGAIN; +} #endif /* CONFIG_NUMA_BALANCING */ #endif /* _LINUX_MIGRATE_H */ -- cgit v1.2.3 From 220018d388b8ab1fca1c5f0c6474bab47ad2c9c0 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Wed, 5 Dec 2012 09:32:56 +0000 Subject: mm: numa: Add THP migration for the NUMA working set scanning fault case build fix Commit "Add THP migration for the NUMA working set scanning fault case" breaks the build because HPAGE_PMD_SHIFT and HPAGE_PMD_MASK defined to explode without CONFIG_TRANSPARENT_HUGEPAGE: mm/migrate.c: In function 'migrate_misplaced_transhuge_page_put': mm/migrate.c:1549: error: call to '__build_bug_failed' declared with attribute error: BUILD_BUG failed mm/migrate.c:1564: error: call to '__build_bug_failed' declared with attribute error: BUILD_BUG failed mm/migrate.c:1566: error: call to '__build_bug_failed' declared with attribute error: BUILD_BUG failed mm/migrate.c:1573: error: call to '__build_bug_failed' declared with attribute error: BUILD_BUG failed mm/migrate.c:1606: error: call to '__build_bug_failed' declared with attribute error: BUILD_BUG failed mm/migrate.c:1648: error: call to '__build_bug_failed' declared with attribute error: BUILD_BUG failed CONFIG_NUMA_BALANCING allows compilation without enabling transparent hugepages, so define the dummy function for such a configuration and only define migrate_misplaced_transhuge_page_put() when transparent hugepages are enabled. Signed-off-by: David Rientjes Signed-off-by: Mel Gorman --- include/linux/migrate.h | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 51eac4bdc606..d52afb9a790c 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -79,12 +79,6 @@ static inline int migrate_huge_page_move_mapping(struct address_space *mapping, extern int migrate_misplaced_page(struct page *page, int node); extern int migrate_misplaced_page(struct page *page, int node); extern bool migrate_ratelimited(int node); -extern int migrate_misplaced_transhuge_page(struct mm_struct *mm, - struct vm_area_struct *vma, - pmd_t *pmd, pmd_t entry, - unsigned long address, - struct page *page, int node); - #else static inline int migrate_misplaced_page(struct page *page, int node) { @@ -94,7 +88,15 @@ static inline bool migrate_ratelimited(int node) { return false; } +#endif /* CONFIG_NUMA_BALANCING */ +#if defined(CONFIG_NUMA_BALANCING) && defined(CONFIG_TRANSPARENT_HUGEPAGE) +extern int migrate_misplaced_transhuge_page(struct mm_struct *mm, + struct vm_area_struct *vma, + pmd_t *pmd, pmd_t entry, + unsigned long address, + struct page *page, int node); +#else static inline int migrate_misplaced_transhuge_page(struct mm_struct *mm, struct vm_area_struct *vma, pmd_t *pmd, pmd_t entry, @@ -103,6 +105,6 @@ static inline int migrate_misplaced_transhuge_page(struct mm_struct *mm, { return -EAGAIN; } -#endif /* CONFIG_NUMA_BALANCING */ +#endif /* CONFIG_NUMA_BALANCING && CONFIG_TRANSPARENT_HUGEPAGE*/ #endif /* _LINUX_MIGRATE_H */ -- cgit v1.2.3 From 5a505085f043e8380f83610f79642853c051e2f1 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Sun, 2 Dec 2012 19:56:46 +0000 Subject: mm/rmap: Convert the struct anon_vma::mutex to an rwsem Convert the struct anon_vma::mutex to an rwsem, which will help in solving a page-migration scalability problem. (Addressed in a separate patch.) The conversion is simple and straightforward: in every case where we mutex_lock()ed we'll now down_write(). Suggested-by: Linus Torvalds Reviewed-by: Rik van Riel Cc: Peter Zijlstra Cc: Paul Turner Cc: Lee Schermerhorn Cc: Christoph Lameter Cc: Mel Gorman Cc: Andrea Arcangeli Cc: Johannes Weiner Cc: Hugh Dickins Signed-off-by: Ingo Molnar Signed-off-by: Mel Gorman --- include/linux/rmap.h | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rmap.h b/include/linux/rmap.h index bfe1f4780644..f3f41d242e25 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -7,7 +7,7 @@ #include #include #include -#include +#include #include /* @@ -25,8 +25,8 @@ * pointing to this anon_vma once its vma list is empty. */ struct anon_vma { - struct anon_vma *root; /* Root of this anon_vma tree */ - struct mutex mutex; /* Serialize access to vma list */ + struct anon_vma *root; /* Root of this anon_vma tree */ + struct rw_semaphore rwsem; /* W: modification, R: walking the list */ /* * The refcount is taken on an anon_vma when there is no * guarantee that the vma of page tables will exist for @@ -64,7 +64,7 @@ struct anon_vma_chain { struct vm_area_struct *vma; struct anon_vma *anon_vma; struct list_head same_vma; /* locked by mmap_sem & page_table_lock */ - struct rb_node rb; /* locked by anon_vma->mutex */ + struct rb_node rb; /* locked by anon_vma->rwsem */ unsigned long rb_subtree_last; #ifdef CONFIG_DEBUG_VM_RB unsigned long cached_vma_start, cached_vma_last; @@ -108,24 +108,24 @@ static inline void vma_lock_anon_vma(struct vm_area_struct *vma) { struct anon_vma *anon_vma = vma->anon_vma; if (anon_vma) - mutex_lock(&anon_vma->root->mutex); + down_write(&anon_vma->root->rwsem); } static inline void vma_unlock_anon_vma(struct vm_area_struct *vma) { struct anon_vma *anon_vma = vma->anon_vma; if (anon_vma) - mutex_unlock(&anon_vma->root->mutex); + up_write(&anon_vma->root->rwsem); } static inline void anon_vma_lock(struct anon_vma *anon_vma) { - mutex_lock(&anon_vma->root->mutex); + down_write(&anon_vma->root->rwsem); } static inline void anon_vma_unlock(struct anon_vma *anon_vma) { - mutex_unlock(&anon_vma->root->mutex); + up_write(&anon_vma->root->rwsem); } /* -- cgit v1.2.3 From 4fc3f1d66b1ef0d7b8dc11f4ff1cc510f78b37d6 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Sun, 2 Dec 2012 19:56:50 +0000 Subject: mm/rmap, migration: Make rmap_walk_anon() and try_to_unmap_anon() more scalable rmap_walk_anon() and try_to_unmap_anon() appears to be too careful about locking the anon vma: while it needs protection against anon vma list modifications, it does not need exclusive access to the list itself. Transforming this exclusive lock to a read-locked rwsem removes a global lock from the hot path of page-migration intense threaded workloads which can cause pathological performance like this: 96.43% process 0 [kernel.kallsyms] [k] perf_trace_sched_switch | --- perf_trace_sched_switch __schedule schedule schedule_preempt_disabled __mutex_lock_common.isra.6 __mutex_lock_slowpath mutex_lock | |--50.61%-- rmap_walk | move_to_new_page | migrate_pages | migrate_misplaced_page | __do_numa_page.isra.69 | handle_pte_fault | handle_mm_fault | __do_page_fault | do_page_fault | page_fault | __memset_sse2 | | | --100.00%-- worker_thread | | | --100.00%-- start_thread | --49.39%-- page_lock_anon_vma try_to_unmap_anon try_to_unmap migrate_pages migrate_misplaced_page __do_numa_page.isra.69 handle_pte_fault handle_mm_fault __do_page_fault do_page_fault page_fault __memset_sse2 | --100.00%-- worker_thread start_thread With this change applied the profile is now nicely flat and there's no anon-vma related scheduling/blocking. Rename anon_vma_[un]lock() => anon_vma_[un]lock_write(), to make it clearer that it's an exclusive write-lock in that case - suggested by Rik van Riel. Suggested-by: Linus Torvalds Cc: Peter Zijlstra Cc: Paul Turner Cc: Lee Schermerhorn Cc: Christoph Lameter Cc: Rik van Riel Cc: Mel Gorman Cc: Andrea Arcangeli Cc: Johannes Weiner Cc: Hugh Dickins Signed-off-by: Ingo Molnar Signed-off-by: Mel Gorman --- include/linux/huge_mm.h | 2 +- include/linux/rmap.h | 17 ++++++++++++++--- 2 files changed, 15 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 027ad04ef3a8..0d1208c0bdc4 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -102,7 +102,7 @@ extern void __split_huge_page_pmd(struct mm_struct *mm, pmd_t *pmd); #define wait_split_huge_page(__anon_vma, __pmd) \ do { \ pmd_t *____pmd = (__pmd); \ - anon_vma_lock(__anon_vma); \ + anon_vma_lock_write(__anon_vma); \ anon_vma_unlock(__anon_vma); \ BUG_ON(pmd_trans_splitting(*____pmd) || \ pmd_trans_huge(*____pmd)); \ diff --git a/include/linux/rmap.h b/include/linux/rmap.h index f3f41d242e25..c20635c527a9 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -118,7 +118,7 @@ static inline void vma_unlock_anon_vma(struct vm_area_struct *vma) up_write(&anon_vma->root->rwsem); } -static inline void anon_vma_lock(struct anon_vma *anon_vma) +static inline void anon_vma_lock_write(struct anon_vma *anon_vma) { down_write(&anon_vma->root->rwsem); } @@ -128,6 +128,17 @@ static inline void anon_vma_unlock(struct anon_vma *anon_vma) up_write(&anon_vma->root->rwsem); } +static inline void anon_vma_lock_read(struct anon_vma *anon_vma) +{ + down_read(&anon_vma->root->rwsem); +} + +static inline void anon_vma_unlock_read(struct anon_vma *anon_vma) +{ + up_read(&anon_vma->root->rwsem); +} + + /* * anon_vma helper functions. */ @@ -220,8 +231,8 @@ int try_to_munlock(struct page *); /* * Called by memory-failure.c to kill processes. */ -struct anon_vma *page_lock_anon_vma(struct page *page); -void page_unlock_anon_vma(struct anon_vma *anon_vma); +struct anon_vma *page_lock_anon_vma_read(struct page *page); +void page_unlock_anon_vma_read(struct anon_vma *anon_vma); int page_mapped_in_vma(struct page *page, struct vm_area_struct *vma); /* -- cgit v1.2.3 From 1daa8a0b2000974e07eacbabecd61bccadc933b9 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Mon, 10 Dec 2012 20:41:27 +0100 Subject: of/i2c: add dummy inline functions for when CONFIG_OF_I2C(_MODULE) isn't defined If CONFIG_OF_I2C and CONFIG_OF_I2C_MODULE are undefined no declaration of of_find_i2c_device_by_node and of_find_i2c_adapter_by_node will be available. Add dummy inline functions to avoid compilation breakage. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Grant Likely --- include/linux/of_i2c.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of_i2c.h b/include/linux/of_i2c.h index 1cb775f8e663..cfb545cd86b5 100644 --- a/include/linux/of_i2c.h +++ b/include/linux/of_i2c.h @@ -29,6 +29,18 @@ static inline void of_i2c_register_devices(struct i2c_adapter *adap) { return; } + +static inline struct i2c_client *of_find_i2c_device_by_node(struct device_node *node) +{ + return NULL; +} + +/* must call put_device() when done with returned i2c_adapter device */ +static inline struct i2c_adapter *of_find_i2c_adapter_by_node( + struct device_node *node) +{ + return NULL; +} #endif /* CONFIG_OF_I2C */ #endif /* __LINUX_OF_I2C_H */ -- cgit v1.2.3 From 93c667ca2598bd84f1bd3f2fa176af69707699fe Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Mon, 10 Dec 2012 20:41:30 +0100 Subject: of: *node argument to of_parse_phandle_with_args should be const The "struct device_node *" argument of of_parse_phandle_with_args() can be const. Making this change makes it explicit that the function will not modify a node. Signed-off-by: Guennadi Liakhovetski [grant.likely: Resolved conflict with previous patch modifying of_parse_phandle()] Signed-off-by: Grant Likely --- include/linux/of.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index 60053bd7e79a..6cfea9aa401f 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -273,7 +273,7 @@ extern int of_modalias_node(struct device_node *node, char *modalias, int len); extern struct device_node *of_parse_phandle(const struct device_node *np, const char *phandle_name, int index); -extern int of_parse_phandle_with_args(struct device_node *np, +extern int of_parse_phandle_with_args(const struct device_node *np, const char *list_name, const char *cells_name, int index, struct of_phandle_args *out_args); -- cgit v1.2.3 From d8153d4d8b7b6141770e1416c4a338161205ed1b Mon Sep 17 00:00:00 2001 From: Lino Sanfilippo Date: Tue, 14 Jun 2011 17:29:45 +0200 Subject: inotify, fanotify: replace fsnotify_put_group() with fsnotify_destroy_group() Currently in fsnotify_put_group() the ref count of a group is decremented and if it becomes 0 fsnotify_destroy_group() is called. Since a groups ref count is only at group creation set to 1 and never increased after that a call to fsnotify_put_group() always results in a call to fsnotify_destroy_group(). With this patch fsnotify_destroy_group() is called directly. Signed-off-by: Lino Sanfilippo Signed-off-by: Eric Paris --- include/linux/fsnotify_backend.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index 63d966d5c2ea..d2ad345bdeec 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -364,7 +364,8 @@ static inline void __fsnotify_d_instantiate(struct dentry *dentry, struct inode extern struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *ops); /* drop reference on a group from fsnotify_alloc_group */ extern void fsnotify_put_group(struct fsnotify_group *group); - +/* destroy group */ +extern void fsnotify_destroy_group(struct fsnotify_group *group); /* take a reference to an event */ extern void fsnotify_get_event(struct fsnotify_event *event); extern void fsnotify_put_event(struct fsnotify_event *event); -- cgit v1.2.3 From 986129520479d689962a42c31acdeaf854ac91f5 Mon Sep 17 00:00:00 2001 From: Lino Sanfilippo Date: Tue, 14 Jun 2011 17:29:46 +0200 Subject: fsnotify: introduce fsnotify_get_group() Introduce fsnotify_get_group() which increments the reference counter of a group. Signed-off-by: Lino Sanfilippo Signed-off-by: Eric Paris --- include/linux/fsnotify_backend.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index d2ad345bdeec..e76cef75295d 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -360,8 +360,10 @@ static inline void __fsnotify_d_instantiate(struct dentry *dentry, struct inode /* called from fsnotify listeners, such as fanotify or dnotify */ -/* get a reference to an existing or create a new group */ +/* create a new group */ extern struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *ops); +/* get reference to a group */ +extern void fsnotify_get_group(struct fsnotify_group *group); /* drop reference on a group from fsnotify_alloc_group */ extern void fsnotify_put_group(struct fsnotify_group *group); /* destroy group */ -- cgit v1.2.3 From 986ab09807ca9454c3f54aae4db7e1bb00daeed3 Mon Sep 17 00:00:00 2001 From: Lino Sanfilippo Date: Tue, 14 Jun 2011 17:29:50 +0200 Subject: fsnotify: use a mutex instead of a spinlock to protect a groups mark list Replaces the groups mark_lock spinlock with a mutex. Using a mutex instead of a spinlock results in more flexibility (i.e it allows to sleep while the lock is held). Signed-off-by: Lino Sanfilippo Signed-off-by: Eric Paris --- include/linux/fsnotify_backend.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index e76cef75295d..c5848346840d 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -141,7 +141,7 @@ struct fsnotify_group { unsigned int priority; /* stores all fastpath marks assoc with this group so they can be cleaned on unregister */ - spinlock_t mark_lock; /* protect marks_list */ + struct mutex mark_mutex; /* protect marks_list */ atomic_t num_marks; /* 1 for each mark and 1 for not being * past the point of no return when freeing * a group */ -- cgit v1.2.3 From e2a29943e9a2ee2aa737a77f550f46ba72269db4 Mon Sep 17 00:00:00 2001 From: Lino Sanfilippo Date: Tue, 14 Jun 2011 17:29:51 +0200 Subject: fsnotify: pass group to fsnotify_destroy_mark() In fsnotify_destroy_mark() dont get the group from the passed mark anymore, but pass the group itself as an additional parameter to the function. Signed-off-by: Lino Sanfilippo Signed-off-by: Eric Paris --- include/linux/fsnotify_backend.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index c5848346840d..140b4b8a100b 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -408,8 +408,9 @@ extern void fsnotify_set_mark_mask_locked(struct fsnotify_mark *mark, __u32 mask /* attach the mark to both the group and the inode */ extern int fsnotify_add_mark(struct fsnotify_mark *mark, struct fsnotify_group *group, struct inode *inode, struct vfsmount *mnt, int allow_dups); -/* given a mark, flag it to be freed when all references are dropped */ -extern void fsnotify_destroy_mark(struct fsnotify_mark *mark); +/* given a group and a mark, flag mark to be freed when all references are dropped */ +extern void fsnotify_destroy_mark(struct fsnotify_mark *mark, + struct fsnotify_group *group); /* run all the marks in a group, and clear all of the vfsmount marks */ extern void fsnotify_clear_vfsmount_marks_by_group(struct fsnotify_group *group); /* run all the marks in a group, and clear all of the inode marks */ -- cgit v1.2.3 From d5a335b845792d2a69ed1e244c0b233117b7db3c Mon Sep 17 00:00:00 2001 From: Lino Sanfilippo Date: Tue, 14 Jun 2011 17:29:52 +0200 Subject: fsnotify: introduce locked versions of fsnotify_add_mark() and fsnotify_remove_mark() This patch introduces fsnotify_add_mark_locked() and fsnotify_remove_mark_locked() which are essentially the same as fsnotify_add_mark() and fsnotify_remove_mark() but assume that the caller has already taken the groups mark mutex. Signed-off-by: Lino Sanfilippo Signed-off-by: Eric Paris --- include/linux/fsnotify_backend.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index 140b4b8a100b..26c06afa264e 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -408,9 +408,13 @@ extern void fsnotify_set_mark_mask_locked(struct fsnotify_mark *mark, __u32 mask /* attach the mark to both the group and the inode */ extern int fsnotify_add_mark(struct fsnotify_mark *mark, struct fsnotify_group *group, struct inode *inode, struct vfsmount *mnt, int allow_dups); +extern int fsnotify_add_mark_locked(struct fsnotify_mark *mark, struct fsnotify_group *group, + struct inode *inode, struct vfsmount *mnt, int allow_dups); /* given a group and a mark, flag mark to be freed when all references are dropped */ extern void fsnotify_destroy_mark(struct fsnotify_mark *mark, struct fsnotify_group *group); +extern void fsnotify_destroy_mark_locked(struct fsnotify_mark *mark, + struct fsnotify_group *group); /* run all the marks in a group, and clear all of the vfsmount marks */ extern void fsnotify_clear_vfsmount_marks_by_group(struct fsnotify_group *group); /* run all the marks in a group, and clear all of the inode marks */ -- cgit v1.2.3 From 64c20d2a20fce295c260ea6cb3b468edfa2fb07b Mon Sep 17 00:00:00 2001 From: Lino Sanfilippo Date: Tue, 14 Jun 2011 17:29:53 +0200 Subject: fsnotify: dont put marks on temporary list when clearing marks by group In clear_marks_by_group_flags() the mark list of a group is iterated and the marks are put on a temporary list. Since we introduced fsnotify_destroy_mark_locked() we dont need the temp list any more and are able to remove the marks while the mark list is iterated and the mark list mutex is held. Signed-off-by: Lino Sanfilippo Signed-off-by: Eric Paris --- include/linux/fsnotify_backend.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index 26c06afa264e..5a8899350456 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -287,7 +287,6 @@ struct fsnotify_mark { struct fsnotify_inode_mark i; struct fsnotify_vfsmount_mark m; }; - struct list_head free_g_list; /* tmp list used when freeing this mark */ __u32 ignored_mask; /* events types to ignore */ #define FSNOTIFY_MARK_FLAG_INODE 0x01 #define FSNOTIFY_MARK_FLAG_VFSMOUNT 0x02 -- cgit v1.2.3 From 6960b0d909cde5bdff49e4e5c1250edd10be7ebd Mon Sep 17 00:00:00 2001 From: Lino Sanfilippo Date: Fri, 12 Aug 2011 01:13:31 +0200 Subject: fsnotify: change locking order On Mon, Aug 01, 2011 at 04:38:22PM -0400, Eric Paris wrote: > > I finally built and tested a v3.0 kernel with these patches (I know I'm > SOOOOOO far behind). Not what I hoped for: > > > [ 150.937798] VFS: Busy inodes after unmount of tmpfs. Self-destruct in 5 seconds. Have a nice day... > > [ 150.945290] BUG: unable to handle kernel NULL pointer dereference at 0000000000000070 > > [ 150.946012] IP: [] shmem_free_inode+0x18/0x50 > > [ 150.946012] PGD 2bf9e067 PUD 2bf9f067 PMD 0 > > [ 150.946012] Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC > > [ 150.946012] CPU 0 > > [ 150.946012] Modules linked in: nfs lockd fscache auth_rpcgss nfs_acl sunrpc ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ext4 jbd2 crc16 joydev ata_piix i2c_piix4 pcspkr uinput ipv6 autofs4 usbhid [last unloaded: scsi_wait_scan] > > [ 150.946012] > > [ 150.946012] Pid: 2764, comm: syscall_thrash Not tainted 3.0.0+ #1 Red Hat KVM > > [ 150.946012] RIP: 0010:[] [] shmem_free_inode+0x18/0x50 > > [ 150.946012] RSP: 0018:ffff88002c2e5df8 EFLAGS: 00010282 > > [ 150.946012] RAX: 000000004e370d9f RBX: 0000000000000000 RCX: ffff88003a029438 > > [ 150.946012] RDX: 0000000033630a5f RSI: 0000000000000000 RDI: ffff88003491c240 > > [ 150.946012] RBP: ffff88002c2e5e08 R08: 0000000000000000 R09: 0000000000000000 > > [ 150.946012] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88003a029428 > > [ 150.946012] R13: ffff88003a029428 R14: ffff88003a029428 R15: ffff88003499a610 > > [ 150.946012] FS: 00007f5a05420700(0000) GS:ffff88003f600000(0000) knlGS:0000000000000000 > > [ 150.946012] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > > [ 150.946012] CR2: 0000000000000070 CR3: 000000002a662000 CR4: 00000000000006f0 > > [ 150.946012] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > > [ 150.946012] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > > [ 150.946012] Process syscall_thrash (pid: 2764, threadinfo ffff88002c2e4000, task ffff88002bfbc760) > > [ 150.946012] Stack: > > [ 150.946012] ffff88003a029438 ffff88003a029428 ffff88002c2e5e38 ffffffff81102f76 > > [ 150.946012] ffff88003a029438 ffff88003a029598 ffffffff8160f9c0 ffff88002c221250 > > [ 150.946012] ffff88002c2e5e68 ffffffff8115e9be ffff88002c2e5e68 ffff88003a029438 > > [ 150.946012] Call Trace: > > [ 150.946012] [] shmem_evict_inode+0x76/0x130 > > [ 150.946012] [] evict+0x7e/0x170 > > [ 150.946012] [] iput_final+0xd0/0x190 > > [ 150.946012] [] iput+0x33/0x40 > > [ 150.946012] [] fsnotify_destroy_mark_locked+0x145/0x160 > > [ 150.946012] [] fsnotify_destroy_mark+0x36/0x50 > > [ 150.946012] [] sys_inotify_rm_watch+0x77/0xd0 > > [ 150.946012] [] system_call_fastpath+0x16/0x1b > > [ 150.946012] Code: 67 4a 00 b8 e4 ff ff ff eb aa 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 48 83 ec 10 48 89 1c 24 4c 89 64 24 08 48 8b 9f 40 05 00 00 > > [ 150.946012] 83 7b 70 00 74 1c 4c 8d a3 80 00 00 00 4c 89 e7 e8 d2 5d 4a > > [ 150.946012] RIP [] shmem_free_inode+0x18/0x50 > > [ 150.946012] RSP > > [ 150.946012] CR2: 0000000000000070 > > Looks at aweful lot like the problem from: > http://www.spinics.net/lists/linux-fsdevel/msg46101.html > I tried to reproduce this bug with your test program, but without success. However, if I understand correctly, this occurs since we dont hold any locks when we call iput() in mark_destroy(), right? With the patches you tested, iput() is also not called within any lock, since the groups mark_mutex is released temporarily before iput() is called. This is, since the original codes behaviour is similar. However since we now have a mutex as the biggest lock, we can do what you suggested (http://www.spinics.net/lists/linux-fsdevel/msg46107.html) and call iput() with the mutex held to avoid the race. The patch below implements this. It uses nested locking to avoid deadlock in case we do the final iput() on an inode which still holds marks and thus would take the mutex again when calling fsnotify_inode_delete() in destroy_inode(). Signed-off-by: Lino Sanfilippo Signed-off-by: Eric Paris --- include/linux/fsnotify_backend.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index 5a8899350456..1af2f6a722c0 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -88,9 +88,10 @@ struct fsnotify_event_private_data; * if the group is interested in this event. * handle_event - main call for a group to handle an fs event * free_group_priv - called when a group refcnt hits 0 to clean up the private union - * freeing-mark - this means that a mark has been flagged to die when everything - * finishes using it. The function is supplied with what must be a - * valid group and inode to use to clean up. + * freeing_mark - called when a mark is being destroyed for some reason. The group + * MUST be holding a reference on each mark and that reference must be + * dropped in this function. inotify uses this function to send + * userspace messages that marks have been removed. */ struct fsnotify_ops { bool (*should_send_event)(struct fsnotify_group *group, struct inode *inode, -- cgit v1.2.3 From 0a6b6bd5919a65030b557ec8fe81f6fb3e93744a Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Fri, 14 Oct 2011 17:43:39 -0400 Subject: fsnotify: make fasync generic for both inotify and fanotify inotify is supposed to support async signal notification when information is available on the inotify fd. This patch moves that support to generic fsnotify functions so it can be used by all notification mechanisms. Signed-off-by: Eric Paris --- include/linux/fsnotify_backend.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index 1af2f6a722c0..d5b0910d4961 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -148,6 +148,8 @@ struct fsnotify_group { * a group */ struct list_head marks_list; /* all inode marks for this group */ + struct fasync_struct *fsn_fa; /* async notification */ + /* groups can define private fields here or use the void *private */ union { void *private; @@ -156,7 +158,6 @@ struct fsnotify_group { spinlock_t idr_lock; struct idr idr; u32 last_wd; - struct fasync_struct *fa; /* async notification */ struct user_struct *user; } inotify_data; #endif @@ -368,6 +369,8 @@ extern void fsnotify_get_group(struct fsnotify_group *group); extern void fsnotify_put_group(struct fsnotify_group *group); /* destroy group */ extern void fsnotify_destroy_group(struct fsnotify_group *group); +/* fasync handler function */ +extern int fsnotify_fasync(int fd, struct file *file, int on); /* take a reference to an event */ extern void fsnotify_get_event(struct fsnotify_event *event); extern void fsnotify_put_event(struct fsnotify_event *event); -- cgit v1.2.3 From d0e1d66b5aa1ec9f556f951aa9a114cc192cd01c Mon Sep 17 00:00:00 2001 From: Namjae Jeon Date: Tue, 11 Dec 2012 16:00:21 -0800 Subject: writeback: remove nr_pages_dirtied arg from balance_dirty_pages_ratelimited_nr() There is no reason to pass the nr_pages_dirtied argument, because nr_pages_dirtied value from the caller is unused in balance_dirty_pages_ratelimited_nr(). Signed-off-by: Namjae Jeon Signed-off-by: Vivek Trivedi Cc: Wu Fengguang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/writeback.h | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/writeback.h b/include/linux/writeback.h index 50c3e8fa06a8..b82a83aba311 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -161,14 +161,7 @@ void __bdi_update_bandwidth(struct backing_dev_info *bdi, unsigned long start_time); void page_writeback_init(void); -void balance_dirty_pages_ratelimited_nr(struct address_space *mapping, - unsigned long nr_pages_dirtied); - -static inline void -balance_dirty_pages_ratelimited(struct address_space *mapping) -{ - balance_dirty_pages_ratelimited_nr(mapping, 1); -} +void balance_dirty_pages_ratelimited(struct address_space *mapping); typedef int (*writepage_t)(struct page *page, struct writeback_control *wbc, void *data); -- cgit v1.2.3 From 19965460e31c73a934d2c19c152f876a75bdff3e Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Tue, 11 Dec 2012 16:00:26 -0800 Subject: mm, memcg: make mem_cgroup_out_of_memory() static mem_cgroup_out_of_memory() is only referenced from within file scope, so it can be marked static. Signed-off-by: David Rientjes Acked-by: KAMEZAWA Hiroyuki Acked-by: Michal Hocko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/oom.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/oom.h b/include/linux/oom.h index fb9826847b89..4a4188da4570 100644 --- a/include/linux/oom.h +++ b/include/linux/oom.h @@ -49,8 +49,6 @@ extern void check_panic_on_oom(enum oom_constraint constraint, gfp_t gfp_mask, extern enum oom_scan_t oom_scan_process_thread(struct task_struct *task, unsigned long totalpages, const nodemask_t *nodemask, bool force_kill); -extern void mem_cgroup_out_of_memory(struct mem_cgroup *memcg, gfp_t gfp_mask, - int order); extern void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask, int order, nodemask_t *mask, bool force_kill); -- cgit v1.2.3 From e5adfffc857788c8b7eca0e98cf1e26f1964b292 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Tue, 11 Dec 2012 16:00:29 -0800 Subject: mm: use IS_ENABLED(CONFIG_NUMA) instead of NUMA_BUILD We don't need custom NUMA_BUILD anymore, since we have handy IS_ENABLED(). Signed-off-by: Kirill A. Shutemov Acked-by: KOSAKI Motohiro Acked-by: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/gfp.h | 2 +- include/linux/kernel.h | 7 ------- 2 files changed, 1 insertion(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/gfp.h b/include/linux/gfp.h index d0a79678f169..31e8041274f6 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -266,7 +266,7 @@ static inline enum zone_type gfp_zone(gfp_t flags) static inline int gfp_zonelist(gfp_t flags) { - if (NUMA_BUILD && unlikely(flags & __GFP_THISNODE)) + if (IS_ENABLED(CONFIG_NUMA) && unlikely(flags & __GFP_THISNODE)) return 1; return 0; diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 7d8dfc7392f1..815e5845d954 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -687,13 +687,6 @@ static inline void ftrace_dump(enum ftrace_dump_mode oops_dump_mode) { } /* Trap pasters of __FUNCTION__ at compile-time */ #define __FUNCTION__ (__func__) -/* This helps us to avoid #ifdef CONFIG_NUMA */ -#ifdef CONFIG_NUMA -#define NUMA_BUILD 1 -#else -#define NUMA_BUILD 0 -#endif - /* This helps us avoid #ifdef CONFIG_COMPACTION */ #ifdef CONFIG_COMPACTION #define COMPACTION_BUILD 1 -- cgit v1.2.3 From d84da3f9e4f18809821562bd960e00a10673b341 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Tue, 11 Dec 2012 16:00:31 -0800 Subject: mm: use IS_ENABLED(CONFIG_COMPACTION) instead of COMPACTION_BUILD We don't need custom COMPACTION_BUILD anymore, since we have handy IS_ENABLED(). Signed-off-by: Kirill A. Shutemov Acked-by: Minchan Kim Acked-by: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kernel.h | 7 ------- 1 file changed, 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 815e5845d954..dd9900cabf89 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -687,13 +687,6 @@ static inline void ftrace_dump(enum ftrace_dump_mode oops_dump_mode) { } /* Trap pasters of __FUNCTION__ at compile-time */ #define __FUNCTION__ (__func__) -/* This helps us avoid #ifdef CONFIG_COMPACTION */ -#ifdef CONFIG_COMPACTION -#define COMPACTION_BUILD 1 -#else -#define COMPACTION_BUILD 0 -#endif - /* This helps us to avoid #ifdef CONFIG_SYMBOL_PREFIX */ #ifdef CONFIG_SYMBOL_PREFIX #define SYMBOL_PREFIX CONFIG_SYMBOL_PREFIX -- cgit v1.2.3 From b023f46813cde6e3b8a8c24f432ff9c1fd8e9a64 Mon Sep 17 00:00:00 2001 From: Wen Congyang Date: Tue, 11 Dec 2012 16:00:45 -0800 Subject: memory-hotplug: skip HWPoisoned page when offlining pages hwpoisoned may be set when we offline a page by the sysfs interface /sys/devices/system/memory/soft_offline_page or /sys/devices/system/memory/hard_offline_page. If we don't clear this flag when onlining pages, this page can't be freed, and will not in free list. So we can't offline these pages again. So we should skip such page when offlining pages. Signed-off-by: Wen Congyang Cc: David Rientjes Cc: Jiang Liu Cc: Len Brown Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Christoph Lameter Cc: Minchan Kim Cc: KOSAKI Motohiro Cc: Yasuaki Ishimatsu Cc: Andi Kleen Cc: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/page-isolation.h | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/page-isolation.h b/include/linux/page-isolation.h index 76a9539cfd3f..a92061e08d48 100644 --- a/include/linux/page-isolation.h +++ b/include/linux/page-isolation.h @@ -2,7 +2,8 @@ #define __LINUX_PAGEISOLATION_H -bool has_unmovable_pages(struct zone *zone, struct page *page, int count); +bool has_unmovable_pages(struct zone *zone, struct page *page, int count, + bool skip_hwpoisoned_pages); void set_pageblock_migratetype(struct page *page, int migratetype); int move_freepages_block(struct zone *zone, struct page *page, int migratetype); @@ -21,7 +22,7 @@ int move_freepages(struct zone *zone, */ int start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, - unsigned migratetype); + unsigned migratetype, bool skip_hwpoisoned_pages); /* * Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE. @@ -34,12 +35,13 @@ undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, /* * Test all pages in [start_pfn, end_pfn) are isolated or not. */ -int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn); +int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn, + bool skip_hwpoisoned_pages); /* * Internal functions. Changes pageblock's migrate type. */ -int set_migratetype_isolate(struct page *page); +int set_migratetype_isolate(struct page *page, bool skip_hwpoisoned_pages); void unset_migratetype_isolate(struct page *page, unsigned migratetype); struct page *alloc_migrate_target(struct page *page, unsigned long private, int **resultp); -- cgit v1.2.3 From 8732794b166196cc501c2ddd9e7c97cf45ab64c5 Mon Sep 17 00:00:00 2001 From: Wen Congyang Date: Tue, 11 Dec 2012 16:00:56 -0800 Subject: numa: convert static memory to dynamically allocated memory for per node device We use a static array to store struct node. In many cases, we don't have too many nodes, and some memory will be unused. Convert it to per-device dynamically allocated memory. Signed-off-by: Wen Congyang Cc: David Rientjes Cc: Jiang Liu Cc: Minchan Kim Cc: KOSAKI Motohiro Cc: Yasuaki Ishimatsu Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/node.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/node.h b/include/linux/node.h index 624e53cecc02..10316f1c68a9 100644 --- a/include/linux/node.h +++ b/include/linux/node.h @@ -27,7 +27,7 @@ struct node { }; struct memory_block; -extern struct node node_devices[]; +extern struct node *node_devices[]; typedef void (*node_registration_func_t)(struct node *); extern int register_node(struct node *, int, struct node *); -- cgit v1.2.3 From d9713679dbd2a6ecb840cd5b65a3ec555c1ec3d4 Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Tue, 11 Dec 2012 16:01:03 -0800 Subject: memory_hotplug: fix possible incorrect node_states[N_NORMAL_MEMORY] Currently memory_hotplug only manages the node_states[N_HIGH_MEMORY], it forgets to manage node_states[N_NORMAL_MEMORY]. This may cause node_states[N_NORMAL_MEMORY] to become incorrect. Example, if a node is empty before online, and we online a memory which is in ZONE_NORMAL. And after online, node_states[N_HIGH_MEMORY] is correct, but node_states[N_NORMAL_MEMORY] is incorrect, the online code doesn't set the new online node to node_states[N_NORMAL_MEMORY]. The same thing will happen when offlining (the offline code doesn't clear the node from node_states[N_NORMAL_MEMORY] when needed). Some memory managment code depends node_states[N_NORMAL_MEMORY], so we have to fix up the node_states[N_NORMAL_MEMORY]. We add node_states_check_changes_online() and node_states_check_changes_offline() to detect whether node_states[N_HIGH_MEMORY] and node_states[N_NORMAL_MEMORY] are changed while hotpluging. Also add @status_change_nid_normal to struct memory_notify, thus the memory hotplug callbacks know whether the node_states[N_NORMAL_MEMORY] are changed. (We can add a @flags and reuse @status_change_nid instead of introducing @status_change_nid_normal, but it will add much more complexity in memory hotplug callback in every subsystem. So introducing @status_change_nid_normal is better and it doesn't change the sematics of @status_change_nid) Signed-off-by: Lai Jiangshan Cc: David Rientjes Cc: Minchan Kim Cc: KOSAKI Motohiro Cc: Yasuaki Ishimatsu Cc: Rob Landley Cc: Jiang Liu Cc: Kay Sievers Cc: Greg Kroah-Hartman Cc: Mel Gorman Cc: Wen Congyang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memory.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/memory.h b/include/linux/memory.h index ff9a9f8e0ed9..a09216d0dcc7 100644 --- a/include/linux/memory.h +++ b/include/linux/memory.h @@ -53,6 +53,7 @@ int arch_get_memory_phys_device(unsigned long start_pfn); struct memory_notify { unsigned long start_pfn; unsigned long nr_pages; + int status_change_nid_normal; int status_change_nid; }; -- cgit v1.2.3 From a1dd450bcb1a05e8218b9aac0ee36f8755d8a140 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Tue, 11 Dec 2012 16:01:27 -0800 Subject: mm: thp: set the accessed flag for old pages on access fault On x86 memory accesses to pages without the ACCESSED flag set result in the ACCESSED flag being set automatically. With the ARM architecture a page access fault is raised instead (and it will continue to be raised until the ACCESSED flag is set for the appropriate PTE/PMD). For normal memory pages, handle_pte_fault will call pte_mkyoung (effectively setting the ACCESSED flag). For transparent huge pages, pmd_mkyoung will only be called for a write fault. This patch ensures that faults on transparent hugepages which do not result in a CoW update the access flags for the faulting pmd. Signed-off-by: Will Deacon Cc: Chris Metcalf Acked-by: Kirill A. Shutemov Cc: Andrea Arcangeli Acked-by: Johannes Weiner Cc: Ni zhan Chen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/huge_mm.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index b31cb7da0346..1af477552459 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -8,6 +8,10 @@ extern int do_huge_pmd_anonymous_page(struct mm_struct *mm, extern int copy_huge_pmd(struct mm_struct *dst_mm, struct mm_struct *src_mm, pmd_t *dst_pmd, pmd_t *src_pmd, unsigned long addr, struct vm_area_struct *vma); +extern void huge_pmd_set_accessed(struct mm_struct *mm, + struct vm_area_struct *vma, + unsigned long address, pmd_t *pmd, + pmd_t orig_pmd, int dirty); extern int do_huge_pmd_wp_page(struct mm_struct *mm, struct vm_area_struct *vma, unsigned long address, pmd_t *pmd, pmd_t orig_pmd); -- cgit v1.2.3 From 42d7395feb56f0655cd8b68e06fc6063823449f8 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Tue, 11 Dec 2012 16:01:34 -0800 Subject: mm: support more pagesizes for MAP_HUGETLB/SHM_HUGETLB There was some desire in large applications using MAP_HUGETLB or SHM_HUGETLB to use 1GB huge pages on some mappings, and stay with 2MB on others. This is useful together with NUMA policy: use 2MB interleaving on some mappings, but 1GB on local mappings. This patch extends the IPC/SHM syscall interfaces slightly to allow specifying the page size. It borrows some upper bits in the existing flag arguments and allows encoding the log of the desired page size in addition to the *_HUGETLB flag. When 0 is specified the default size is used, this makes the change fully compatible. Extending the internal hugetlb code to handle this is straight forward. Instead of a single mount it just keeps an array of them and selects the right mount based on the specified page size. When no page size is specified it uses the mount of the default page size. The change is not visible in /proc/mounts because internal mounts don't appear there. It also has very little overhead: the additional mounts just consume a super block, but not more memory when not used. I also exported the new flags to the user headers (they were previously under __KERNEL__). Right now only symbols for x86 and some other architecture for 1GB and 2MB are defined. The interface should already work for all other architectures though. Only architectures that define multiple hugetlb sizes actually need it (that is currently x86, tile, powerpc). However tile and powerpc have user configurable hugetlb sizes, so it's not easy to add defines. A program on those architectures would need to query sysfs and use the appropiate log2. [akpm@linux-foundation.org: cleanups] [rientjes@google.com: fix build] [akpm@linux-foundation.org: checkpatch fixes] Signed-off-by: Andi Kleen Cc: Michael Kerrisk Acked-by: Rik van Riel Acked-by: KAMEZAWA Hiroyuki Cc: Hillf Danton Signed-off-by: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/hugetlb.h | 7 +++++-- include/linux/shm.h | 15 +++++++++++++++ 2 files changed, 20 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 225164842ab6..3e7fa1acf09c 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -183,7 +183,8 @@ extern const struct file_operations hugetlbfs_file_operations; extern const struct vm_operations_struct hugetlb_vm_ops; struct file *hugetlb_file_setup(const char *name, unsigned long addr, size_t size, vm_flags_t acct, - struct user_struct **user, int creat_flags); + struct user_struct **user, int creat_flags, + int page_size_log); static inline int is_file_hugepages(struct file *file) { @@ -195,12 +196,14 @@ static inline int is_file_hugepages(struct file *file) return 0; } + #else /* !CONFIG_HUGETLBFS */ #define is_file_hugepages(file) 0 static inline struct file * hugetlb_file_setup(const char *name, unsigned long addr, size_t size, - vm_flags_t acctflag, struct user_struct **user, int creat_flags) + vm_flags_t acctflag, struct user_struct **user, int creat_flags, + int page_size_log) { return ERR_PTR(-ENOSYS); } diff --git a/include/linux/shm.h b/include/linux/shm.h index bcf8a6a3ec00..429c1995d756 100644 --- a/include/linux/shm.h +++ b/include/linux/shm.h @@ -29,6 +29,21 @@ struct shmid_kernel /* private to the kernel */ #define SHM_HUGETLB 04000 /* segment will use huge TLB pages */ #define SHM_NORESERVE 010000 /* don't check for reservations */ +/* Bits [26:31] are reserved */ + +/* + * When SHM_HUGETLB is set bits [26:31] encode the log2 of the huge page size. + * This gives us 6 bits, which is enough until someone invents 128 bit address + * spaces. + * + * Assume these are all power of twos. + * When 0 use the default page size. + */ +#define SHM_HUGE_SHIFT 26 +#define SHM_HUGE_MASK 0x3f +#define SHM_HUGE_2MB (21 << SHM_HUGE_SHIFT) +#define SHM_HUGE_1GB (30 << SHM_HUGE_SHIFT) + #ifdef CONFIG_SYSVIPC long do_shmat(int shmid, char __user *shmaddr, int shmflg, unsigned long *addr, unsigned long shmlba); -- cgit v1.2.3 From d37371870ceb1d2165397dc36114725b6dca946c Mon Sep 17 00:00:00 2001 From: Michel Lespinasse Date: Tue, 11 Dec 2012 16:01:38 -0800 Subject: mm: augment vma rbtree with rb_subtree_gap Define vma->rb_subtree_gap as the largest gap between any vma in the subtree rooted at that vma, and their predecessor. Or, for a recursive definition, vma->rb_subtree_gap is the max of: - vma->vm_start - vma->vm_prev->vm_end - rb_subtree_gap fields of the vmas pointed by vma->rb.rb_left and vma->rb.rb_right This will allow get_unmapped_area_* to find a free area of the right size in O(log(N)) time, instead of potentially having to do a linear walk across all the VMAs. Also define mm->highest_vm_end as the vm_end field of the highest vma, so that we can easily check if the following gap is suitable. This does have the potential to make unmapping VMAs more expensive, especially for processes with very large numbers of VMAs, where the VMA rbtree can grow quite deep. Signed-off-by: Michel Lespinasse Reviewed-by: Rik van Riel Cc: Hugh Dickins Cc: Russell King Cc: Ralf Baechle Cc: Paul Mundt Cc: "David S. Miller" Cc: Chris Metcalf Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm_types.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 31f8a3af7d94..94fa52b28ee8 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -237,6 +237,14 @@ struct vm_area_struct { struct rb_node vm_rb; + /* + * Largest free memory gap in bytes to the left of this VMA. + * Either between this VMA and vma->vm_prev, or between one of the + * VMAs below us in the VMA rbtree and its ->vm_prev. This helps + * get_unmapped_area find a free area of the right size. + */ + unsigned long rb_subtree_gap; + /* * For areas with an address space and backing store, * linkage into the address_space->i_mmap interval tree, or @@ -322,6 +330,7 @@ struct mm_struct { unsigned long task_size; /* size of task vm space */ unsigned long cached_hole_size; /* if non-zero, the largest hole below free_area_cache */ unsigned long free_area_cache; /* first hole of size cached_hole_size or larger */ + unsigned long highest_vm_end; /* highest vma end address */ pgd_t * pgd; atomic_t mm_users; /* How many users with user space? */ atomic_t mm_count; /* How many references to "struct mm_struct" (users count as 1) */ -- cgit v1.2.3 From e4c6bfd2d79d063017ab19a18915f0bc759f32d9 Mon Sep 17 00:00:00 2001 From: Rik van Riel Date: Tue, 11 Dec 2012 16:01:44 -0800 Subject: mm: rearrange vm_area_struct for fewer cache misses The kernel walks the VMA rbtree in various places, including the page fault path. However, the vm_rb node spanned two cache lines, on 64 bit systems with 64 byte cache lines (most x86 systems). Rearrange vm_area_struct a little, so all the information we need to do a VMA tree walk is in the first cache line. [akpm@linux-foundation.org: checkpatch fixes] Signed-off-by: Michel Lespinasse Signed-off-by: Rik van Riel Cc: Hugh Dickins Cc: Russell King Cc: Ralf Baechle Cc: Paul Mundt Cc: "David S. Miller" Cc: Chris Metcalf Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm_types.h | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 94fa52b28ee8..7ade2731b5d6 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -224,7 +224,8 @@ struct vm_region { * library, the executable area etc). */ struct vm_area_struct { - struct mm_struct * vm_mm; /* The address space we belong to. */ + /* The first cache line has the info for VMA tree walking. */ + unsigned long vm_start; /* Our start address within vm_mm. */ unsigned long vm_end; /* The first byte after our end address within vm_mm. */ @@ -232,9 +233,6 @@ struct vm_area_struct { /* linked list of VM areas per task, sorted by address */ struct vm_area_struct *vm_next, *vm_prev; - pgprot_t vm_page_prot; /* Access permissions of this VMA. */ - unsigned long vm_flags; /* Flags, see mm.h. */ - struct rb_node vm_rb; /* @@ -245,6 +243,12 @@ struct vm_area_struct { */ unsigned long rb_subtree_gap; + /* Second cache line starts here. */ + + struct mm_struct *vm_mm; /* The address space we belong to. */ + pgprot_t vm_page_prot; /* Access permissions of this VMA. */ + unsigned long vm_flags; /* Flags, see mm.h. */ + /* * For areas with an address space and backing store, * linkage into the address_space->i_mmap interval tree, or -- cgit v1.2.3 From db4fbfb9523c93583c339e66023506f651c1d54b Mon Sep 17 00:00:00 2001 From: Michel Lespinasse Date: Tue, 11 Dec 2012 16:01:49 -0800 Subject: mm: vm_unmapped_area() lookup function Implement vm_unmapped_area() using the rb_subtree_gap and highest_vm_end information to look up for suitable virtual address space gaps. struct vm_unmapped_area_info is used to define the desired allocation request: - lowest or highest possible address matching the remaining constraints - desired gap length - low/high address limits that the gap must fit into - alignment mask and offset Also update the generic arch_get_unmapped_area[_topdown] functions to make use of vm_unmapped_area() instead of implementing a brute force search. [akpm@linux-foundation.org: checkpatch fixes] Signed-off-by: Michel Lespinasse Reviewed-by: Rik van Riel Cc: Hugh Dickins Cc: Russell King Cc: Ralf Baechle Cc: Paul Mundt Cc: "David S. Miller" Cc: Chris Metcalf Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index bcaab4e6fe91..4af4f0b1be4c 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1456,6 +1456,37 @@ extern unsigned long vm_mmap(struct file *, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long); +struct vm_unmapped_area_info { +#define VM_UNMAPPED_AREA_TOPDOWN 1 + unsigned long flags; + unsigned long length; + unsigned long low_limit; + unsigned long high_limit; + unsigned long align_mask; + unsigned long align_offset; +}; + +extern unsigned long unmapped_area(struct vm_unmapped_area_info *info); +extern unsigned long unmapped_area_topdown(struct vm_unmapped_area_info *info); + +/* + * Search for an unmapped address range. + * + * We are looking for a range that: + * - does not intersect with any VMA; + * - is contained within the [low_limit, high_limit) interval; + * - is at least the desired size. + * - satisfies (begin_addr & align_mask) == (align_offset & align_mask) + */ +static inline unsigned long +vm_unmapped_area(struct vm_unmapped_area_info *info) +{ + if (!(info->flags & VM_UNMAPPED_AREA_TOPDOWN)) + return unmapped_area(info); + else + return unmapped_area_topdown(info); +} + /* truncate.c */ extern void truncate_inode_pages(struct address_space *, loff_t); extern void truncate_inode_pages_range(struct address_space *, -- cgit v1.2.3 From 78bd52097d04205a33a8014a1b8ac01cf1ae9d06 Mon Sep 17 00:00:00 2001 From: Rafael Aquini Date: Tue, 11 Dec 2012 16:02:31 -0800 Subject: mm: adjust address_space_operations.migratepage() return code Memory fragmentation introduced by ballooning might reduce significantly the number of 2MB contiguous memory blocks that can be used within a guest, thus imposing performance penalties associated with the reduced number of transparent huge pages that could be used by the guest workload. This patch-set follows the main idea discussed at 2012 LSFMMS session: "Ballooning for transparent huge pages" -- http://lwn.net/Articles/490114/ to introduce the required changes to the virtio_balloon driver, as well as the changes to the core compaction & migration bits, in order to make those subsystems aware of ballooned pages and allow memory balloon pages become movable within a guest, thus avoiding the aforementioned fragmentation issue Following are numbers that prove this patch benefits on allowing compaction to be more effective at memory ballooned guests. Results for STRESS-HIGHALLOC benchmark, from Mel Gorman's mmtests suite, running on a 4gB RAM KVM guest which was ballooning 512mB RAM in 64mB chunks, at every minute (inflating/deflating), while test was running: ===BEGIN stress-highalloc STRESS-HIGHALLOC highalloc-3.7 highalloc-3.7 rc4-clean rc4-patch Pass 1 55.00 ( 0.00%) 62.00 ( 7.00%) Pass 2 54.00 ( 0.00%) 62.00 ( 8.00%) while Rested 75.00 ( 0.00%) 80.00 ( 5.00%) MMTests Statistics: duration 3.7 3.7 rc4-clean rc4-patch User 1207.59 1207.46 System 1300.55 1299.61 Elapsed 2273.72 2157.06 MMTests Statistics: vmstat 3.7 3.7 rc4-clean rc4-patch Page Ins 3581516 2374368 Page Outs 11148692 10410332 Swap Ins 80 47 Swap Outs 3641 476 Direct pages scanned 37978 33826 Kswapd pages scanned 1828245 1342869 Kswapd pages reclaimed 1710236 1304099 Direct pages reclaimed 32207 31005 Kswapd efficiency 93% 97% Kswapd velocity 804.077 622.546 Direct efficiency 84% 91% Direct velocity 16.703 15.682 Percentage direct scans 2% 2% Page writes by reclaim 79252 9704 Page writes file 75611 9228 Page writes anon 3641 476 Page reclaim immediate 16764 11014 Page rescued immediate 0 0 Slabs scanned 2171904 2152448 Direct inode steals 385 2261 Kswapd inode steals 659137 609670 Kswapd skipped wait 1 69 THP fault alloc 546 631 THP collapse alloc 361 339 THP splits 259 263 THP fault fallback 98 50 THP collapse fail 20 17 Compaction stalls 747 499 Compaction success 244 145 Compaction failures 503 354 Compaction pages moved 370888 474837 Compaction move failure 77378 65259 ===END stress-highalloc This patch: Introduce MIGRATEPAGE_SUCCESS as the default return code for address_space_operations.migratepage() method and documents the expected return code for the same method in failure cases. Signed-off-by: Rafael Aquini Cc: Rusty Russell Cc: "Michael S. Tsirkin" Cc: Rik van Riel Cc: Mel Gorman Cc: Andi Kleen Cc: Konrad Rzeszutek Wilk Cc: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/migrate.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/migrate.h b/include/linux/migrate.h index ce7e6671968b..a4e886d17f87 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -7,6 +7,13 @@ typedef struct page *new_page_t(struct page *, unsigned long private, int **); +/* + * Return values from addresss_space_operations.migratepage(): + * - negative errno on page migration failure; + * - zero on page migration success; + */ +#define MIGRATEPAGE_SUCCESS 0 + #ifdef CONFIG_MIGRATION extern void putback_lru_pages(struct list_head *l); -- cgit v1.2.3 From 252aa6f5be64c90c67b9f066ccff880f6b487d32 Mon Sep 17 00:00:00 2001 From: Rafael Aquini Date: Tue, 11 Dec 2012 16:02:35 -0800 Subject: mm: redefine address_space.assoc_mapping Overhaul struct address_space.assoc_mapping renaming it to address_space.private_data and its type is redefined to void*. By this approach we consistently name the .private_* elements from struct address_space as well as allow extended usage for address_space association with other data structures through ->private_data. Also, all users of old ->assoc_mapping element are converted to reflect its new name and type change (->private_data). Signed-off-by: Rafael Aquini Cc: Rusty Russell Cc: "Michael S. Tsirkin" Cc: Rik van Riel Cc: Mel Gorman Cc: Andi Kleen Cc: Konrad Rzeszutek Wilk Cc: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 75fe9a134803..408fb1e77a0a 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -418,7 +418,7 @@ struct address_space { struct backing_dev_info *backing_dev_info; /* device readahead, etc */ spinlock_t private_lock; /* for use by the address_space */ struct list_head private_list; /* ditto */ - struct address_space *assoc_mapping; /* ditto */ + void *private_data; /* ditto */ } __attribute__((aligned(sizeof(long)))); /* * On most architectures that alignment is already the case; but -- cgit v1.2.3 From 18468d93e53b037e1a04ec58398eab763d054064 Mon Sep 17 00:00:00 2001 From: Rafael Aquini Date: Tue, 11 Dec 2012 16:02:38 -0800 Subject: mm: introduce a common interface for balloon pages mobility Memory fragmentation introduced by ballooning might reduce significantly the number of 2MB contiguous memory blocks that can be used within a guest, thus imposing performance penalties associated with the reduced number of transparent huge pages that could be used by the guest workload. This patch introduces a common interface to help a balloon driver on making its page set movable to compaction, and thus allowing the system to better leverage the compation efforts on memory defragmentation. [akpm@linux-foundation.org: use PAGE_FLAGS_CHECK_AT_PREP, s/__balloon_page_flags/page_flags_cleared/, small cleanups] [rientjes@google.com: allow balloon compaction for any system with memory compaction enabled, which is the defconfig] Signed-off-by: Rafael Aquini Acked-by: Mel Gorman Cc: Rusty Russell Cc: "Michael S. Tsirkin" Cc: Rik van Riel Cc: Andi Kleen Cc: Konrad Rzeszutek Wilk Cc: Minchan Kim Signed-off-by: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/balloon_compaction.h | 272 +++++++++++++++++++++++++++++++++++++ include/linux/migrate.h | 10 ++ include/linux/pagemap.h | 16 +++ 3 files changed, 298 insertions(+) create mode 100644 include/linux/balloon_compaction.h (limited to 'include/linux') diff --git a/include/linux/balloon_compaction.h b/include/linux/balloon_compaction.h new file mode 100644 index 000000000000..f7f1d7169b11 --- /dev/null +++ b/include/linux/balloon_compaction.h @@ -0,0 +1,272 @@ +/* + * include/linux/balloon_compaction.h + * + * Common interface definitions for making balloon pages movable by compaction. + * + * Despite being perfectly possible to perform ballooned pages migration, they + * make a special corner case to compaction scans because balloon pages are not + * enlisted at any LRU list like the other pages we do compact / migrate. + * + * As the page isolation scanning step a compaction thread does is a lockless + * procedure (from a page standpoint), it might bring some racy situations while + * performing balloon page compaction. In order to sort out these racy scenarios + * and safely perform balloon's page compaction and migration we must, always, + * ensure following these three simple rules: + * + * i. when updating a balloon's page ->mapping element, strictly do it under + * the following lock order, independently of the far superior + * locking scheme (lru_lock, balloon_lock): + * +-page_lock(page); + * +--spin_lock_irq(&b_dev_info->pages_lock); + * ... page->mapping updates here ... + * + * ii. before isolating or dequeueing a balloon page from the balloon device + * pages list, the page reference counter must be raised by one and the + * extra refcount must be dropped when the page is enqueued back into + * the balloon device page list, thus a balloon page keeps its reference + * counter raised only while it is under our special handling; + * + * iii. after the lockless scan step have selected a potential balloon page for + * isolation, re-test the page->mapping flags and the page ref counter + * under the proper page lock, to ensure isolating a valid balloon page + * (not yet isolated, nor under release procedure) + * + * The functions provided by this interface are placed to help on coping with + * the aforementioned balloon page corner case, as well as to ensure the simple + * set of exposed rules are satisfied while we are dealing with balloon pages + * compaction / migration. + * + * Copyright (C) 2012, Red Hat, Inc. Rafael Aquini + */ +#ifndef _LINUX_BALLOON_COMPACTION_H +#define _LINUX_BALLOON_COMPACTION_H +#include +#include +#include +#include +#include + +/* + * Balloon device information descriptor. + * This struct is used to allow the common balloon compaction interface + * procedures to find the proper balloon device holding memory pages they'll + * have to cope for page compaction / migration, as well as it serves the + * balloon driver as a page book-keeper for its registered balloon devices. + */ +struct balloon_dev_info { + void *balloon_device; /* balloon device descriptor */ + struct address_space *mapping; /* balloon special page->mapping */ + unsigned long isolated_pages; /* # of isolated pages for migration */ + spinlock_t pages_lock; /* Protection to pages list */ + struct list_head pages; /* Pages enqueued & handled to Host */ +}; + +extern struct page *balloon_page_enqueue(struct balloon_dev_info *b_dev_info); +extern struct page *balloon_page_dequeue(struct balloon_dev_info *b_dev_info); +extern struct balloon_dev_info *balloon_devinfo_alloc( + void *balloon_dev_descriptor); + +static inline void balloon_devinfo_free(struct balloon_dev_info *b_dev_info) +{ + kfree(b_dev_info); +} + +/* + * balloon_page_free - release a balloon page back to the page free lists + * @page: ballooned page to be set free + * + * This function must be used to properly set free an isolated/dequeued balloon + * page at the end of a sucessful page migration, or at the balloon driver's + * page release procedure. + */ +static inline void balloon_page_free(struct page *page) +{ + /* + * Balloon pages always get an extra refcount before being isolated + * and before being dequeued to help on sorting out fortuite colisions + * between a thread attempting to isolate and another thread attempting + * to release the very same balloon page. + * + * Before we handle the page back to Buddy, lets drop its extra refcnt. + */ + put_page(page); + __free_page(page); +} + +#ifdef CONFIG_BALLOON_COMPACTION +extern bool balloon_page_isolate(struct page *page); +extern void balloon_page_putback(struct page *page); +extern int balloon_page_migrate(struct page *newpage, + struct page *page, enum migrate_mode mode); +extern struct address_space +*balloon_mapping_alloc(struct balloon_dev_info *b_dev_info, + const struct address_space_operations *a_ops); + +static inline void balloon_mapping_free(struct address_space *balloon_mapping) +{ + kfree(balloon_mapping); +} + +/* + * page_flags_cleared - helper to perform balloon @page ->flags tests. + * + * As balloon pages are obtained from buddy and we do not play with page->flags + * at driver level (exception made when we get the page lock for compaction), + * we can safely identify a ballooned page by checking if the + * PAGE_FLAGS_CHECK_AT_PREP page->flags are all cleared. This approach also + * helps us skip ballooned pages that are locked for compaction or release, thus + * mitigating their racy check at balloon_page_movable() + */ +static inline bool page_flags_cleared(struct page *page) +{ + return !(page->flags & PAGE_FLAGS_CHECK_AT_PREP); +} + +/* + * __is_movable_balloon_page - helper to perform @page mapping->flags tests + */ +static inline bool __is_movable_balloon_page(struct page *page) +{ + struct address_space *mapping = page->mapping; + return mapping_balloon(mapping); +} + +/* + * balloon_page_movable - test page->mapping->flags to identify balloon pages + * that can be moved by compaction/migration. + * + * This function is used at core compaction's page isolation scheme, therefore + * most pages exposed to it are not enlisted as balloon pages and so, to avoid + * undesired side effects like racing against __free_pages(), we cannot afford + * holding the page locked while testing page->mapping->flags here. + * + * As we might return false positives in the case of a balloon page being just + * released under us, the page->mapping->flags need to be re-tested later, + * under the proper page lock, at the functions that will be coping with the + * balloon page case. + */ +static inline bool balloon_page_movable(struct page *page) +{ + /* + * Before dereferencing and testing mapping->flags, let's make sure + * this is not a page that uses ->mapping in a different way + */ + if (page_flags_cleared(page) && !page_mapped(page) && + page_count(page) == 1) + return __is_movable_balloon_page(page); + + return false; +} + +/* + * balloon_page_insert - insert a page into the balloon's page list and make + * the page->mapping assignment accordingly. + * @page : page to be assigned as a 'balloon page' + * @mapping : allocated special 'balloon_mapping' + * @head : balloon's device page list head + * + * Caller must ensure the page is locked and the spin_lock protecting balloon + * pages list is held before inserting a page into the balloon device. + */ +static inline void balloon_page_insert(struct page *page, + struct address_space *mapping, + struct list_head *head) +{ + page->mapping = mapping; + list_add(&page->lru, head); +} + +/* + * balloon_page_delete - delete a page from balloon's page list and clear + * the page->mapping assignement accordingly. + * @page : page to be released from balloon's page list + * + * Caller must ensure the page is locked and the spin_lock protecting balloon + * pages list is held before deleting a page from the balloon device. + */ +static inline void balloon_page_delete(struct page *page) +{ + page->mapping = NULL; + list_del(&page->lru); +} + +/* + * balloon_page_device - get the b_dev_info descriptor for the balloon device + * that enqueues the given page. + */ +static inline struct balloon_dev_info *balloon_page_device(struct page *page) +{ + struct address_space *mapping = page->mapping; + if (likely(mapping)) + return mapping->private_data; + + return NULL; +} + +static inline gfp_t balloon_mapping_gfp_mask(void) +{ + return GFP_HIGHUSER_MOVABLE; +} + +static inline bool balloon_compaction_check(void) +{ + return true; +} + +#else /* !CONFIG_BALLOON_COMPACTION */ + +static inline void *balloon_mapping_alloc(void *balloon_device, + const struct address_space_operations *a_ops) +{ + return ERR_PTR(-EOPNOTSUPP); +} + +static inline void balloon_mapping_free(struct address_space *balloon_mapping) +{ + return; +} + +static inline void balloon_page_insert(struct page *page, + struct address_space *mapping, + struct list_head *head) +{ + list_add(&page->lru, head); +} + +static inline void balloon_page_delete(struct page *page) +{ + list_del(&page->lru); +} + +static inline bool balloon_page_movable(struct page *page) +{ + return false; +} + +static inline bool balloon_page_isolate(struct page *page) +{ + return false; +} + +static inline void balloon_page_putback(struct page *page) +{ + return; +} + +static inline int balloon_page_migrate(struct page *newpage, + struct page *page, enum migrate_mode mode) +{ + return 0; +} + +static inline gfp_t balloon_mapping_gfp_mask(void) +{ + return GFP_HIGHUSER; +} + +static inline bool balloon_compaction_check(void) +{ + return false; +} +#endif /* CONFIG_BALLOON_COMPACTION */ +#endif /* _LINUX_BALLOON_COMPACTION_H */ diff --git a/include/linux/migrate.h b/include/linux/migrate.h index a4e886d17f87..ce42847ed35f 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -11,8 +11,18 @@ typedef struct page *new_page_t(struct page *, unsigned long private, int **); * Return values from addresss_space_operations.migratepage(): * - negative errno on page migration failure; * - zero on page migration success; + * + * The balloon page migration introduces this special case where a 'distinct' + * return code is used to flag a successful page migration to unmap_and_move(). + * This approach is necessary because page migration can race against balloon + * deflation procedure, and for such case we could introduce a nasty page leak + * if a successfully migrated balloon page gets released concurrently with + * migration's unmap_and_move() wrap-up steps. */ #define MIGRATEPAGE_SUCCESS 0 +#define MIGRATEPAGE_BALLOON_SUCCESS 1 /* special ret code for balloon page + * sucessful migration case. + */ #ifdef CONFIG_MIGRATION diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index e42c762f0dc7..6da609d14c15 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -24,6 +24,7 @@ enum mapping_flags { AS_ENOSPC = __GFP_BITS_SHIFT + 1, /* ENOSPC on async write */ AS_MM_ALL_LOCKS = __GFP_BITS_SHIFT + 2, /* under mm_take_all_locks() */ AS_UNEVICTABLE = __GFP_BITS_SHIFT + 3, /* e.g., ramdisk, SHM_LOCK */ + AS_BALLOON_MAP = __GFP_BITS_SHIFT + 4, /* balloon page special map */ }; static inline void mapping_set_error(struct address_space *mapping, int error) @@ -53,6 +54,21 @@ static inline int mapping_unevictable(struct address_space *mapping) return !!mapping; } +static inline void mapping_set_balloon(struct address_space *mapping) +{ + set_bit(AS_BALLOON_MAP, &mapping->flags); +} + +static inline void mapping_clear_balloon(struct address_space *mapping) +{ + clear_bit(AS_BALLOON_MAP, &mapping->flags); +} + +static inline int mapping_balloon(struct address_space *mapping) +{ + return mapping && test_bit(AS_BALLOON_MAP, &mapping->flags); +} + static inline gfp_t mapping_gfp_mask(struct address_space * mapping) { return (__force gfp_t)mapping->flags & __GFP_BITS_MASK; -- cgit v1.2.3 From 5733c7d11dff44e98d2ca16617886a78086b354f Mon Sep 17 00:00:00 2001 From: Rafael Aquini Date: Tue, 11 Dec 2012 16:02:47 -0800 Subject: mm: introduce putback_movable_pages() The PATCH "mm: introduce compaction and migration for virtio ballooned pages" hacks around putback_lru_pages() in order to allow ballooned pages to be re-inserted on balloon page list as if a ballooned page was like a LRU page. As ballooned pages are not legitimate LRU pages, this patch introduces putback_movable_pages() to properly cope with cases where the isolated pageset contains ballooned pages and LRU pages, thus fixing the mentioned inelegant hack around putback_lru_pages(). Signed-off-by: Rafael Aquini Cc: Rusty Russell Cc: "Michael S. Tsirkin" Cc: Rik van Riel Cc: Mel Gorman Cc: Andi Kleen Cc: Konrad Rzeszutek Wilk Cc: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/migrate.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/migrate.h b/include/linux/migrate.h index ce42847ed35f..0b5865c61efd 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -27,6 +27,7 @@ typedef struct page *new_page_t(struct page *, unsigned long private, int **); #ifdef CONFIG_MIGRATION extern void putback_lru_pages(struct list_head *l); +extern void putback_movable_pages(struct list_head *l); extern int migrate_page(struct address_space *, struct page *, struct page *, enum migrate_mode); extern int migrate_pages(struct list_head *l, new_page_t x, @@ -50,6 +51,7 @@ extern int migrate_huge_page_move_mapping(struct address_space *mapping, #else static inline void putback_lru_pages(struct list_head *l) {} +static inline void putback_movable_pages(struct list_head *l) {} static inline int migrate_pages(struct list_head *l, new_page_t x, unsigned long private, bool offlining, enum migrate_mode mode) { return -ENOSYS; } -- cgit v1.2.3 From fa264375175a382621c5344a6508e02ec4d1c3c0 Mon Sep 17 00:00:00 2001 From: Yasuaki Ishimatsu Date: Tue, 11 Dec 2012 16:02:52 -0800 Subject: mm: cleanup register_node() register_node() is defined as extern in include/linux/node.h. But the function is only called from register_one_node() in driver/base/node.c. So the patch defines register_node() as static. Signed-off-by: Yasuaki Ishimatsu Acked-by: David Rientjes Acked-by: KOSAKI Motohiro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/node.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/node.h b/include/linux/node.h index 10316f1c68a9..2115ad5d6f19 100644 --- a/include/linux/node.h +++ b/include/linux/node.h @@ -30,7 +30,6 @@ struct memory_block; extern struct node *node_devices[]; typedef void (*node_registration_func_t)(struct node *); -extern int register_node(struct node *, int, struct node *); extern void unregister_node(struct node *node); #ifdef CONFIG_NUMA extern int register_one_node(int nid); -- cgit v1.2.3 From a9c58b907dbc6821533dfc295b63caf111ff1f16 Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Tue, 11 Dec 2012 16:02:54 -0800 Subject: mm, oom: change type of oom_score_adj to short The maximum oom_score_adj is 1000 and the minimum oom_score_adj is -1000, so this range can be represented by the signed short type with no functional change. The extra space this frees up in struct signal_struct will be used for per-thread oom kill flags in the next patch. Signed-off-by: David Rientjes Cc: KAMEZAWA Hiroyuki Cc: KOSAKI Motohiro Reviewed-by: Michal Hocko Cc: Anton Vorontsov Cc: Oleg Nesterov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/oom.h | 4 ++-- include/linux/sched.h | 6 +++--- 2 files changed, 5 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/oom.h b/include/linux/oom.h index 4a4188da4570..922dab164eb0 100644 --- a/include/linux/oom.h +++ b/include/linux/oom.h @@ -29,8 +29,8 @@ enum oom_scan_t { OOM_SCAN_SELECT, /* always select this thread first */ }; -extern void compare_swap_oom_score_adj(int old_val, int new_val); -extern int test_set_oom_score_adj(int new_val); +extern void compare_swap_oom_score_adj(short old_val, short new_val); +extern short test_set_oom_score_adj(short new_val); extern unsigned long oom_badness(struct task_struct *p, struct mem_cgroup *memcg, const nodemask_t *nodemask, diff --git a/include/linux/sched.h b/include/linux/sched.h index 0dd42a02df2e..ed30456152da 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -631,9 +631,9 @@ struct signal_struct { struct rw_semaphore group_rwsem; #endif - int oom_score_adj; /* OOM kill score adjustment */ - int oom_score_adj_min; /* OOM kill score adjustment minimum value. - * Only settable by CAP_SYS_RESOURCE. */ + short oom_score_adj; /* OOM kill score adjustment */ + short oom_score_adj_min; /* OOM kill score adjustment min value. + * Only settable by CAP_SYS_RESOURCE. */ struct mutex cred_guard_mutex; /* guard against foreign influences on * credential calculations -- cgit v1.2.3 From e1e12d2f3104be886073ac6c5c4678f30b1b9e51 Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Tue, 11 Dec 2012 16:02:56 -0800 Subject: mm, oom: fix race when specifying a thread as the oom origin test_set_oom_score_adj() and compare_swap_oom_score_adj() are used to specify that current should be killed first if an oom condition occurs in between the two calls. The usage is short oom_score_adj = test_set_oom_score_adj(OOM_SCORE_ADJ_MAX); ... compare_swap_oom_score_adj(OOM_SCORE_ADJ_MAX, oom_score_adj); to store the thread's oom_score_adj, temporarily change it to the maximum score possible, and then restore the old value if it is still the same. This happens to still be racy, however, if the user writes OOM_SCORE_ADJ_MAX to /proc/pid/oom_score_adj in between the two calls. The compare_swap_oom_score_adj() will then incorrectly reset the old value prior to the write of OOM_SCORE_ADJ_MAX. To fix this, introduce a new oom_flags_t member in struct signal_struct that will be used for per-thread oom killer flags. KSM and swapoff can now use a bit in this member to specify that threads should be killed first in oom conditions without playing around with oom_score_adj. This also allows the correct oom_score_adj to always be shown when reading /proc/pid/oom_score. Signed-off-by: David Rientjes Cc: KAMEZAWA Hiroyuki Cc: KOSAKI Motohiro Reviewed-by: Michal Hocko Cc: Anton Vorontsov Cc: Oleg Nesterov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/oom.h | 19 +++++++++++++++++-- include/linux/sched.h | 1 + include/linux/types.h | 1 + 3 files changed, 19 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/oom.h b/include/linux/oom.h index 922dab164eb0..da60007075b5 100644 --- a/include/linux/oom.h +++ b/include/linux/oom.h @@ -29,8 +29,23 @@ enum oom_scan_t { OOM_SCAN_SELECT, /* always select this thread first */ }; -extern void compare_swap_oom_score_adj(short old_val, short new_val); -extern short test_set_oom_score_adj(short new_val); +/* Thread is the potential origin of an oom condition; kill first on oom */ +#define OOM_FLAG_ORIGIN ((__force oom_flags_t)0x1) + +static inline void set_current_oom_origin(void) +{ + current->signal->oom_flags |= OOM_FLAG_ORIGIN; +} + +static inline void clear_current_oom_origin(void) +{ + current->signal->oom_flags &= ~OOM_FLAG_ORIGIN; +} + +static inline bool oom_task_origin(const struct task_struct *p) +{ + return !!(p->signal->oom_flags & OOM_FLAG_ORIGIN); +} extern unsigned long oom_badness(struct task_struct *p, struct mem_cgroup *memcg, const nodemask_t *nodemask, diff --git a/include/linux/sched.h b/include/linux/sched.h index ed30456152da..3e387df065fc 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -631,6 +631,7 @@ struct signal_struct { struct rw_semaphore group_rwsem; #endif + oom_flags_t oom_flags; short oom_score_adj; /* OOM kill score adjustment */ short oom_score_adj_min; /* OOM kill score adjustment min value. * Only settable by CAP_SYS_RESOURCE. */ diff --git a/include/linux/types.h b/include/linux/types.h index 1cc0e4b9a048..4d118ba11349 100644 --- a/include/linux/types.h +++ b/include/linux/types.h @@ -156,6 +156,7 @@ typedef u32 dma_addr_t; #endif typedef unsigned __bitwise__ gfp_t; typedef unsigned __bitwise__ fmode_t; +typedef unsigned __bitwise__ oom_flags_t; #ifdef CONFIG_PHYS_ADDR_T_64BIT typedef u64 phys_addr_t; -- cgit v1.2.3 From bc357f431c836c6631751e3ef7dfe7882394ad67 Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Tue, 11 Dec 2012 16:02:59 -0800 Subject: mm: cma: remove watermark hacks Commits 2139cbe627b8 ("cma: fix counting of isolated pages") and d95ea5d18e69 ("cma: fix watermark checking") introduced a reliable method of free page accounting when memory is being allocated from CMA regions, so the workaround introduced earlier by commit 49f223a9cd96 ("mm: trigger page reclaim in alloc_contig_range() to stabilise watermarks") can be finally removed. Signed-off-by: Marek Szyprowski Cc: Kyungmin Park Cc: Arnd Bergmann Cc: Mel Gorman Acked-by: Michal Nazarewicz Cc: Minchan Kim Cc: Bartlomiej Zolnierkiewicz Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 9 --------- 1 file changed, 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index a23923ba8263..0c0b1d608a69 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -63,10 +63,8 @@ enum { #ifdef CONFIG_CMA # define is_migrate_cma(migratetype) unlikely((migratetype) == MIGRATE_CMA) -# define cma_wmark_pages(zone) zone->min_cma_pages #else # define is_migrate_cma(migratetype) false -# define cma_wmark_pages(zone) 0 #endif #define for_each_migratetype_order(order, type) \ @@ -382,13 +380,6 @@ struct zone { #ifdef CONFIG_MEMORY_HOTPLUG /* see spanned/present_pages for more description */ seqlock_t span_seqlock; -#endif -#ifdef CONFIG_CMA - /* - * CMA needs to increase watermark levels during the allocation - * process to make sure that the system is not starved. - */ - unsigned long min_cma_pages; #endif struct free_area free_area[MAX_ORDER]; -- cgit v1.2.3 From 81df9bff2609f07cef4690ac2ebda1611b55b05a Mon Sep 17 00:00:00 2001 From: Joonsoo Kim Date: Tue, 11 Dec 2012 16:03:10 -0800 Subject: bootmem: fix wrong call parameter for free_bootmem() It is strange that alloc_bootmem() returns a virtual address and free_bootmem() requires a physical address. Anyway, free_bootmem()'s first parameter should be physical address. There are some call sites for free_bootmem() with virtual address. So fix them. [akpm@linux-foundation.org: improve free_bootmem() and free_bootmem_pate() documentation] Signed-off-by: Joonsoo Kim Cc: Haavard Skinnemoen Cc: Hans-Christian Egtvedt Cc: Johannes Weiner Cc: FUJITA Tomonori Cc: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/bootmem.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h index 6d6795d46a75..7b74452c5317 100644 --- a/include/linux/bootmem.h +++ b/include/linux/bootmem.h @@ -51,8 +51,8 @@ extern unsigned long free_all_bootmem(void); extern void free_bootmem_node(pg_data_t *pgdat, unsigned long addr, unsigned long size); -extern void free_bootmem(unsigned long addr, unsigned long size); -extern void free_bootmem_late(unsigned long addr, unsigned long size); +extern void free_bootmem(unsigned long physaddr, unsigned long size); +extern void free_bootmem_late(unsigned long physaddr, unsigned long size); /* * Flags for reserve_bootmem (also if CONFIG_HAVE_ARCH_BOOTMEM_NODE, -- cgit v1.2.3 From 511c2aba8f07fc45bdcba548cb63f7b8a450c6dc Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Tue, 11 Dec 2012 16:03:16 -0800 Subject: mm, memory-hotplug: dynamic configure movable memory and portion memory Add online_movable and online_kernel for logic memory hotplug. This is the dynamic version of "movablecore" & "kernelcore". We have the same reason to introduce it as to introduce "movablecore" & "kernelcore". It has the same motive as "movablecore" & "kernelcore", but it is dynamic/running-time: o We can configure memory as kernelcore or movablecore after boot. Userspace workload is increased, we need more hugepage, we can't use "online_movable" to add memory and allow the system use more THP(transparent-huge-page), vice-verse when kernel workload is increase. Also help for virtualization to dynamic configure host/guest's memory, to save/(reduce waste) memory. Memory capacity on Demand o When a new node is physically online after boot, we need to use "online_movable" or "online_kernel" to configure/portion it as we expected when we logic-online it. This configuration also helps for physically-memory-migrate. o all benefit as the same as existed "movablecore" & "kernelcore". o Preparing for movable-node, which is very important for power-saving, hardware partitioning and high-available-system(hardware fault management). (Note, we don't introduce movable-node here.) Action behavior: When a memoryblock/memorysection is onlined by "online_movable", the kernel will not have directly reference to the page of the memoryblock, thus we can remove that memory any time when needed. When it is online by "online_kernel", the kernel can use it. When it is online by "online", the zone type doesn't changed. Current constraints: Only the memoryblock which is adjacent to the ZONE_MOVABLE can be online from ZONE_NORMAL to ZONE_MOVABLE. [akpm@linux-foundation.org: use min_t, cleanups] Signed-off-by: Lai Jiangshan Signed-off-by: Wen Congyang Cc: Yasuaki Ishimatsu Cc: Lai Jiangshan Cc: Jiang Liu Cc: KOSAKI Motohiro Cc: Minchan Kim Cc: Mel Gorman Cc: David Rientjes Cc: Yinghai Lu Cc: Rusty Russell Cc: Greg KH Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memory_hotplug.h | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index 95573ec4ee6c..4a45c4e50025 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -26,6 +26,13 @@ enum { MEMORY_HOTPLUG_MAX_BOOTMEM_TYPE = NODE_INFO, }; +/* Types for control the zone type of onlined memory */ +enum { + ONLINE_KEEP, + ONLINE_KERNEL, + ONLINE_MOVABLE, +}; + /* * pgdat resizing functions */ @@ -46,6 +53,10 @@ void pgdat_resize_init(struct pglist_data *pgdat) } /* * Zone resizing functions + * + * Note: any attempt to resize a zone should has pgdat_resize_lock() + * zone_span_writelock() both held. This ensure the size of a zone + * can't be changed while pgdat_resize_lock() held. */ static inline unsigned zone_span_seqbegin(struct zone *zone) { @@ -71,7 +82,7 @@ extern int zone_grow_free_lists(struct zone *zone, unsigned long new_nr_pages); extern int zone_grow_waitqueues(struct zone *zone, unsigned long nr_pages); extern int add_one_highpage(struct page *page, int pfn, int bad_ppro); /* VM interface that may be used by firmware interface */ -extern int online_pages(unsigned long, unsigned long); +extern int online_pages(unsigned long, unsigned long, int); extern void __offline_isolated_pages(unsigned long, unsigned long); typedef void (*online_page_callback_t)(struct page *page); -- cgit v1.2.3 From 1f53ef17d3ed6c34868cc8e7aa7c1d351c2fdc95 Mon Sep 17 00:00:00 2001 From: Zhang Rui Date: Wed, 12 Dec 2012 15:31:37 +0800 Subject: Thermal: Fix DEFAULT_THERMAL_GOVERNOR Fix DEFAULT_THERMAL_GOVERNOR to be consistant with the default governor selected in kernel config file. Signed-off-by: Zhang Rui --- include/linux/thermal.h | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 807f2146fe35..fe82022478e7 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -46,8 +46,14 @@ #define THERMAL_GENL_VERSION 0x01 #define THERMAL_GENL_MCAST_GROUP_NAME "thermal_mc_group" -/* Default Thermal Governor: Does Linear Throttling */ -#define DEFAULT_THERMAL_GOVERNOR "step_wise" +/* Default Thermal Governor */ +#if defined(CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE) +#define DEFAULT_THERMAL_GOVERNOR "step_wise" +#elif defined(CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE) +#define DEFAULT_THERMAL_GOVERNOR "fair_share" +#elif defined(CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE) +#define DEFAULT_THERMAL_GOVERNOR "user_space" +#endif struct thermal_zone_device; struct thermal_cooling_device; -- cgit v1.2.3 From 83499b52c61f50292f0aae36499de8a8fc3e37c3 Mon Sep 17 00:00:00 2001 From: Alexander Holler Date: Sun, 9 Dec 2012 12:44:30 +0100 Subject: HID: sensors: autodetect USB HID sensor hubs It should not be necessary to add IDs for HID sensor hubs to lists in hid-core.c and hid-sensor-hub.c. So instead of a whitelist, autodetect such USB HID sensor hubs, based on a collection of type physical inside a useage page of type sensor. If some sensor hubs stil must be usable as raw devices, a blacklist might be created. Signed-off-by: Alexander Holler Acked-by: "Pandruvada, Srinivas" Signed-off-by: Jiri Kosina --- include/linux/hid-sensor-ids.h | 1 - include/linux/hid.h | 2 ++ 2 files changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/hid-sensor-ids.h b/include/linux/hid-sensor-ids.h index ca8d7e94eb3c..55f277372fed 100644 --- a/include/linux/hid-sensor-ids.h +++ b/include/linux/hid-sensor-ids.h @@ -19,7 +19,6 @@ #ifndef _HID_SENSORS_IDS_H #define _HID_SENSORS_IDS_H -#define HID_UP_SENSOR 0x00200000 #define HID_MAX_PHY_DEVICES 0xFF /* Accel 3D (200073) */ diff --git a/include/linux/hid.h b/include/linux/hid.h index c076041a069e..c5f6ec2b15c2 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -167,6 +167,7 @@ struct hid_item { #define HID_UP_MSVENDOR 0xff000000 #define HID_UP_CUSTOM 0x00ff0000 #define HID_UP_LOGIVENDOR 0xffbc0000 +#define HID_UP_SENSOR 0x00200000 #define HID_USAGE 0x0000ffff @@ -292,6 +293,7 @@ struct hid_item { */ #define HID_GROUP_GENERIC 0x0001 #define HID_GROUP_MULTITOUCH 0x0002 +#define HID_GROUP_SENSOR_HUB 0x0003 /* * This is the global environment of the parser. This information is -- cgit v1.2.3 From 93b4796dede916de74b21fbd637588da6a99a7ec Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Wed, 12 Dec 2012 13:50:54 -0800 Subject: thp: do_huge_pmd_wp_page(): handle huge zero page On write access to huge zero page we alloc a new huge page and clear it. If ENOMEM, graceful fallback: we create a new pmd table and set pte around fault address to newly allocated normal (4k) page. All other ptes in the pmd set to normal zero page. Signed-off-by: Kirill A. Shutemov Cc: Andrea Arcangeli Cc: Andi Kleen Cc: "H. Peter Anvin" Cc: Mel Gorman Acked-by: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 4af4f0b1be4c..4b80bad4a367 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -516,6 +516,14 @@ static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma) } #endif +#ifndef my_zero_pfn +static inline unsigned long my_zero_pfn(unsigned long addr) +{ + extern unsigned long zero_pfn; + return zero_pfn; +} +#endif + /* * Multiple processes may "see" the same page. E.g. for untouched * mappings of /dev/null, all processes see the same page full of -- cgit v1.2.3 From e180377f1ae48b3cbc559c9875d9b038f7f000c6 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Wed, 12 Dec 2012 13:50:59 -0800 Subject: thp: change split_huge_page_pmd() interface Pass vma instead of mm and add address parameter. In most cases we already have vma on the stack. We provides split_huge_page_pmd_mm() for few cases when we have mm, but not vma. This change is preparation to huge zero pmd splitting implementation. Signed-off-by: Kirill A. Shutemov Cc: Andrea Arcangeli Cc: Andi Kleen Cc: "H. Peter Anvin" Cc: Mel Gorman Cc: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/huge_mm.h | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 1af477552459..3132ea788581 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -95,12 +95,14 @@ extern int handle_pte_fault(struct mm_struct *mm, struct vm_area_struct *vma, unsigned long address, pte_t *pte, pmd_t *pmd, unsigned int flags); extern int split_huge_page(struct page *page); -extern void __split_huge_page_pmd(struct mm_struct *mm, pmd_t *pmd); -#define split_huge_page_pmd(__mm, __pmd) \ +extern void __split_huge_page_pmd(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmd); +#define split_huge_page_pmd(__vma, __address, __pmd) \ do { \ pmd_t *____pmd = (__pmd); \ if (unlikely(pmd_trans_huge(*____pmd))) \ - __split_huge_page_pmd(__mm, ____pmd); \ + __split_huge_page_pmd(__vma, __address, \ + ____pmd); \ } while (0) #define wait_split_huge_page(__anon_vma, __pmd) \ do { \ @@ -110,6 +112,8 @@ extern void __split_huge_page_pmd(struct mm_struct *mm, pmd_t *pmd); BUG_ON(pmd_trans_splitting(*____pmd) || \ pmd_trans_huge(*____pmd)); \ } while (0) +extern void split_huge_page_pmd_mm(struct mm_struct *mm, unsigned long address, + pmd_t *pmd); #if HPAGE_PMD_ORDER > MAX_ORDER #error "hugepages can't be allocated by the buddy allocator" #endif @@ -177,10 +181,12 @@ static inline int split_huge_page(struct page *page) { return 0; } -#define split_huge_page_pmd(__mm, __pmd) \ +#define split_huge_page_pmd(__vma, __address, __pmd) \ do { } while (0) #define wait_split_huge_page(__anon_vma, __pmd) \ do { } while (0) +#define split_huge_page_pmd_mm(__mm, __address, __pmd) \ + do { } while (0) #define compound_trans_head(page) compound_head(page) static inline int hugepage_madvise(struct vm_area_struct *vma, unsigned long *vm_flags, int advice) -- cgit v1.2.3 From d8a8e1f0da3d29d7268b3300c96a059d63901b76 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Wed, 12 Dec 2012 13:51:09 -0800 Subject: thp, vmstat: implement HZP_ALLOC and HZP_ALLOC_FAILED events hzp_alloc is incremented every time a huge zero page is successfully allocated. It includes allocations which where dropped due race with other allocation. Note, it doesn't count every map of the huge zero page, only its allocation. hzp_alloc_failed is incremented if kernel fails to allocate huge zero page and falls back to using small pages. Signed-off-by: Kirill A. Shutemov Cc: Andrea Arcangeli Cc: Andi Kleen Cc: "H. Peter Anvin" Cc: Mel Gorman Cc: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/vm_event_item.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index 3d3114594370..fe786f07d2bd 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -58,6 +58,8 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, THP_COLLAPSE_ALLOC, THP_COLLAPSE_ALLOC_FAILED, THP_SPLIT, + THP_ZERO_PAGE_ALLOC, + THP_ZERO_PAGE_ALLOC_FAILED, #endif NR_VM_EVENT_ITEMS }; -- cgit v1.2.3 From 79da5407eeadc740fbf4b45d6df7d7f8e6adaf2c Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Wed, 12 Dec 2012 13:51:12 -0800 Subject: thp: introduce sysfs knob to disable huge zero page By default kernel tries to use huge zero page on read page fault. It's possible to disable huge zero page by writing 0 or enable it back by writing 1: echo 0 >/sys/kernel/mm/transparent_hugepage/khugepaged/use_zero_page echo 1 >/sys/kernel/mm/transparent_hugepage/khugepaged/use_zero_page Signed-off-by: Kirill A. Shutemov Cc: Andrea Arcangeli Cc: Andi Kleen Cc: "H. Peter Anvin" Cc: Mel Gorman Cc: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/huge_mm.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 3132ea788581..092dc5305a32 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -39,6 +39,7 @@ enum transparent_hugepage_flag { TRANSPARENT_HUGEPAGE_DEFRAG_FLAG, TRANSPARENT_HUGEPAGE_DEFRAG_REQ_MADV_FLAG, TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG, + TRANSPARENT_HUGEPAGE_USE_ZERO_PAGE_FLAG, #ifdef CONFIG_DEBUG_VM TRANSPARENT_HUGEPAGE_DEBUG_COW_FLAG, #endif @@ -78,6 +79,9 @@ extern bool is_vma_temporary_stack(struct vm_area_struct *vma); (transparent_hugepage_flags & \ (1<vm_flags & VM_HUGEPAGE)) +#define transparent_hugepage_use_zero_page() \ + (transparent_hugepage_flags & \ + (1< Date: Wed, 12 Dec 2012 13:51:21 -0800 Subject: mm: node_states: introduce N_MEMORY We have N_NORMAL_MEMORY for standing for the nodes that have normal memory with zone_type <= ZONE_NORMAL. And we have N_HIGH_MEMORY for standing for the nodes that have normal or high memory. But we don't have any word to stand for the nodes that have *any* memory. And we have N_CPU but without N_MEMORY. Current code reuse the N_HIGH_MEMORY for this purpose because any node which has memory must have high memory or normal memory currently. A) But this reusing is bad for *readability*. Because the name N_HIGH_MEMORY just stands for high or normal: A.example 1) mem_cgroup_nr_lru_pages(): for_each_node_state(nid, N_HIGH_MEMORY) The user will be confused(why this function just counts for high or normal memory node? does it counts for ZONE_MOVABLE's lru pages?) until someone else tell them N_HIGH_MEMORY is reused to stand for nodes that have any memory. A.cont) If we introduce N_MEMORY, we can reduce this confusing AND make the code more clearly: A.example 2) mm/page_cgroup.c use N_HIGH_MEMORY twice: One is in page_cgroup_init(void): for_each_node_state(nid, N_HIGH_MEMORY) { It means if the node have memory, we will allocate page_cgroup map for the node. We should use N_MEMORY instead here to gaim more clearly. The second using is in alloc_page_cgroup(): if (node_state(nid, N_HIGH_MEMORY)) addr = vzalloc_node(size, nid); It means if the node has high or normal memory that can be allocated from kernel. We should keep N_HIGH_MEMORY here, and it will be better if the "any memory" semantic of N_HIGH_MEMORY is removed. B) This reusing is out-dated if we introduce MOVABLE-dedicated node. The MOVABLE-dedicated node should not appear in node_stats[N_HIGH_MEMORY] nor node_stats[N_NORMAL_MEMORY], because MOVABLE-dedicated node has no high or normal memory. In x86_64, N_HIGH_MEMORY=N_NORMAL_MEMORY, if a MOVABLE-dedicated node is in node_stats[N_HIGH_MEMORY], it is also means it is in node_stats[N_NORMAL_MEMORY], it causes SLUB wrong. The slub uses for_each_node_state(nid, N_NORMAL_MEMORY) and creates kmem_cache_node for MOVABLE-dedicated node and cause problem. In one word, we need a N_MEMORY. We just intrude it as an alias to N_HIGH_MEMORY and fix all im-proper usages of N_HIGH_MEMORY in late patches. Signed-off-by: Lai Jiangshan Acked-by: Christoph Lameter Acked-by: Hillf Danton Signed-off-by: Wen Congyang Cc: Lin Feng Cc: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/nodemask.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h index 7afc36334d52..c6ebdc97a428 100644 --- a/include/linux/nodemask.h +++ b/include/linux/nodemask.h @@ -380,6 +380,7 @@ enum node_states { #else N_HIGH_MEMORY = N_NORMAL_MEMORY, #endif + N_MEMORY = N_HIGH_MEMORY, N_CPU, /* The node has one or more cpus */ NR_NODE_STATES }; -- cgit v1.2.3 From 38d7bee9d24adf4c95676a3dc902827c72930ebb Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Wed, 12 Dec 2012 13:51:24 -0800 Subject: cpuset: use N_MEMORY instead N_HIGH_MEMORY N_HIGH_MEMORY stands for the nodes that has normal or high memory. N_MEMORY stands for the nodes that has any memory. The code here need to handle with the nodes which have memory, we should use N_MEMORY instead. Signed-off-by: Lai Jiangshan Acked-by: Hillf Danton Signed-off-by: Wen Congyang Cc: Christoph Lameter Cc: Lin Feng Cc: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/cpuset.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h index 838320fc3d1d..8c8a60d29407 100644 --- a/include/linux/cpuset.h +++ b/include/linux/cpuset.h @@ -144,7 +144,7 @@ static inline nodemask_t cpuset_mems_allowed(struct task_struct *p) return node_possible_map; } -#define cpuset_current_mems_allowed (node_states[N_HIGH_MEMORY]) +#define cpuset_current_mems_allowed (node_states[N_MEMORY]) static inline void cpuset_init_current_mems_allowed(void) {} static inline int cpuset_nodemask_valid_mems_allowed(nodemask_t *nodemask) -- cgit v1.2.3 From 6715ddf94576ff39f5d1cda8d4c568d3b79e82ec Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Wed, 12 Dec 2012 13:51:49 -0800 Subject: hotplug: update nodemasks management Update nodemasks management for N_MEMORY. [lliubbo@gmail.com: fix build] Signed-off-by: Lai Jiangshan Signed-off-by: Wen Congyang Cc: Christoph Lameter Cc: Hillf Danton Cc: Lin Feng Cc: David Rientjes Signed-off-by: Bob Liu Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memory.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/memory.h b/include/linux/memory.h index a09216d0dcc7..45e93b468878 100644 --- a/include/linux/memory.h +++ b/include/linux/memory.h @@ -54,6 +54,7 @@ struct memory_notify { unsigned long start_pfn; unsigned long nr_pages; int status_change_nid_normal; + int status_change_nid_high; int status_change_nid; }; -- cgit v1.2.3 From 44e33e8f95171b93968c3ac3cf8516998b1db65d Mon Sep 17 00:00:00 2001 From: Greg Thelen Date: Wed, 12 Dec 2012 13:51:52 -0800 Subject: res_counter: delete res_counter_write() Since commit 628f42355389 ("memcg: limit change shrink usage") both res_counter_write() and write_strategy_fn have been unused. This patch deletes them both. Signed-off-by: Greg Thelen Cc: Glauber Costa Cc: Tejun Heo Acked-by: KAMEZAWA Hiroyuki Cc: Frederic Weisbecker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/res_counter.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/res_counter.h b/include/linux/res_counter.h index 7d7fbe2ef782..6f54e40fa218 100644 --- a/include/linux/res_counter.h +++ b/include/linux/res_counter.h @@ -74,14 +74,9 @@ ssize_t res_counter_read(struct res_counter *counter, int member, const char __user *buf, size_t nbytes, loff_t *pos, int (*read_strategy)(unsigned long long val, char *s)); -typedef int (*write_strategy_fn)(const char *buf, unsigned long long *val); - int res_counter_memparse_write_strategy(const char *buf, unsigned long long *res); -int res_counter_write(struct res_counter *counter, int member, - const char *buffer, write_strategy_fn write_strategy); - /* * the field descriptors. one for each member of res_counter */ -- cgit v1.2.3 From 05b0afd73d04109d87f00ccd39f099e217c37263 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Wed, 12 Dec 2012 13:51:56 -0800 Subject: mm: add a reminder comment for __GFP_BITS_SHIFT Cc: Glauber Costa Cc: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/gfp.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 31e8041274f6..f74856e17e48 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -34,6 +34,7 @@ struct vm_area_struct; #define ___GFP_NO_KSWAPD 0x400000u #define ___GFP_OTHER_NODE 0x800000u #define ___GFP_WRITE 0x1000000u +/* If the above are modified, __GFP_BITS_SHIFT may need updating */ /* * GFP bitmasks.. -- cgit v1.2.3 From 68ae564bbac8eb9ed54ddd2529b0e29ee190b355 Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Wed, 12 Dec 2012 13:51:57 -0800 Subject: mm, memcg: avoid unnecessary function call when memcg is disabled While profiling numa/core v16 with cgroup_disable=memory on the command line, I noticed mem_cgroup_count_vm_event() still showed up as high as 0.60% in perftop. This occurs because the function is called extremely often even when memcg is disabled. To fix this, inline the check for mem_cgroup_disabled() so we avoid the unnecessary function call if memcg is disabled. Signed-off-by: David Rientjes Acked-by: KAMEZAWA Hiroyuki Acked-by: Glauber Costa Acked-by: Michal Hocko Acked-by: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 11ddc7ffeba8..e98a74c0c9c0 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -181,7 +181,14 @@ unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order, gfp_t gfp_mask, unsigned long *total_scanned); -void mem_cgroup_count_vm_event(struct mm_struct *mm, enum vm_event_item idx); +void __mem_cgroup_count_vm_event(struct mm_struct *mm, enum vm_event_item idx); +static inline void mem_cgroup_count_vm_event(struct mm_struct *mm, + enum vm_event_item idx) +{ + if (mem_cgroup_disabled()) + return; + __mem_cgroup_count_vm_event(mm, idx); +} #ifdef CONFIG_TRANSPARENT_HUGEPAGE void mem_cgroup_split_huge_fixup(struct page *head); #endif -- cgit v1.2.3 From 20b2f52b73febce476fc9376f0296c1aa0e4f5a7 Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Wed, 12 Dec 2012 13:52:00 -0800 Subject: numa: add CONFIG_MOVABLE_NODE for movable-dedicated node We need a node which only contains movable memory. This feature is very important for node hotplug. If a node has normal/highmem, the memory may be used by the kernel and can't be offlined. If the node only contains movable memory, we can offline the memory and the node. All are prepared, we can actually introduce N_MEMORY. add CONFIG_MOVABLE_NODE make we can use it for movable-dedicated node [akpm@linux-foundation.org: fix Kconfig text] Signed-off-by: Lai Jiangshan Tested-by: Yasuaki Ishimatsu Signed-off-by: Wen Congyang Cc: Jiang Liu Cc: KOSAKI Motohiro Cc: Minchan Kim Cc: Mel Gorman Cc: David Rientjes Cc: Yinghai Lu Cc: Rusty Russell Cc: Greg KH Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/nodemask.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h index c6ebdc97a428..4e2cbfa640b7 100644 --- a/include/linux/nodemask.h +++ b/include/linux/nodemask.h @@ -380,7 +380,11 @@ enum node_states { #else N_HIGH_MEMORY = N_NORMAL_MEMORY, #endif +#ifdef CONFIG_MOVABLE_NODE + N_MEMORY, /* The node has memory(regular, high, movable) */ +#else N_MEMORY = N_HIGH_MEMORY, +#endif N_CPU, /* The node has one or more cpus */ NR_NODE_STATES }; -- cgit v1.2.3 From 9feedc9d831e18ae6d0d15aa562e5e46ba53647b Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Wed, 12 Dec 2012 13:52:12 -0800 Subject: mm: introduce new field "managed_pages" to struct zone Currently a zone's present_pages is calcuated as below, which is inaccurate and may cause trouble to memory hotplug. spanned_pages - absent_pages - memmap_pages - dma_reserve. During fixing bugs caused by inaccurate zone->present_pages, we found zone->present_pages has been abused. The field zone->present_pages may have different meanings in different contexts: 1) pages existing in a zone. 2) pages managed by the buddy system. For more discussions about the issue, please refer to: http://lkml.org/lkml/2012/11/5/866 https://patchwork.kernel.org/patch/1346751/ This patchset tries to introduce a new field named "managed_pages" to struct zone, which counts "pages managed by the buddy system". And revert zone->present_pages to count "physical pages existing in a zone", which also keep in consistence with pgdat->node_present_pages. We will set an initial value for zone->managed_pages in function free_area_init_core() and will adjust it later if the initial value is inaccurate. For DMA/normal zones, the initial value is set to: (spanned_pages - absent_pages - memmap_pages - dma_reserve) Later zone->managed_pages will be adjusted to the accurate value when the bootmem allocator frees all free pages to the buddy system in function free_all_bootmem_node() and free_all_bootmem(). The bootmem allocator doesn't touch highmem pages, so highmem zones' managed_pages is set to the accurate value "spanned_pages - absent_pages" in function free_area_init_core() and won't be updated anymore. This patch also adds a new field "managed_pages" to /proc/zoneinfo and sysrq showmem. [akpm@linux-foundation.org: small comment tweaks] Signed-off-by: Jiang Liu Cc: Wen Congyang Cc: David Rientjes Cc: Maciej Rutecki Tested-by: Chris Clayton Cc: "Rafael J . Wysocki" Cc: Mel Gorman Cc: Minchan Kim Cc: KAMEZAWA Hiroyuki Cc: Michal Hocko Cc: Jianguo Wu Cc: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 41 ++++++++++++++++++++++++++++++++++------- 1 file changed, 34 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 0c0b1d608a69..cd55dad56aac 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -460,17 +460,44 @@ struct zone { unsigned long zone_start_pfn; /* - * zone_start_pfn, spanned_pages and present_pages are all - * protected by span_seqlock. It is a seqlock because it has - * to be read outside of zone->lock, and it is done in the main - * allocator path. But, it is written quite infrequently. + * spanned_pages is the total pages spanned by the zone, including + * holes, which is calculated as: + * spanned_pages = zone_end_pfn - zone_start_pfn; * - * The lock is declared along with zone->lock because it is + * present_pages is physical pages existing within the zone, which + * is calculated as: + * present_pages = spanned_pages - absent_pages(pags in holes); + * + * managed_pages is present pages managed by the buddy system, which + * is calculated as (reserved_pages includes pages allocated by the + * bootmem allocator): + * managed_pages = present_pages - reserved_pages; + * + * So present_pages may be used by memory hotplug or memory power + * management logic to figure out unmanaged pages by checking + * (present_pages - managed_pages). And managed_pages should be used + * by page allocator and vm scanner to calculate all kinds of watermarks + * and thresholds. + * + * Locking rules: + * + * zone_start_pfn and spanned_pages are protected by span_seqlock. + * It is a seqlock because it has to be read outside of zone->lock, + * and it is done in the main allocator path. But, it is written + * quite infrequently. + * + * The span_seq lock is declared along with zone->lock because it is * frequently read in proximity to zone->lock. It's good to * give them a chance of being in the same cacheline. + * + * Write access to present_pages and managed_pages at runtime should + * be protected by lock_memory_hotplug()/unlock_memory_hotplug(). + * Any reader who can't tolerant drift of present_pages and + * managed_pages should hold memory hotplug lock to get a stable value. */ - unsigned long spanned_pages; /* total size, including holes */ - unsigned long present_pages; /* amount of memory (excluding holes) */ + unsigned long spanned_pages; + unsigned long present_pages; + unsigned long managed_pages; /* * rarely used fields: -- cgit v1.2.3 From 816422ad76474fed8052b6f7b905a054d082e59a Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Wed, 12 Dec 2012 13:52:36 -0800 Subject: asm-generic, mm: pgtable: consolidate zero page helpers We have two different implementation of is_zero_pfn() and my_zero_pfn() helpers: for architectures with and without zero page coloring. Let's consolidate them in . Signed-off-by: Kirill A. Shutemov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 8 -------- 1 file changed, 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 4b80bad4a367..4af4f0b1be4c 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -516,14 +516,6 @@ static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma) } #endif -#ifndef my_zero_pfn -static inline unsigned long my_zero_pfn(unsigned long addr) -{ - extern unsigned long zero_pfn; - return zero_pfn; -} -#endif - /* * Multiple processes may "see" the same page. E.g. for untouched * mappings of /dev/null, all processes see the same page full of -- cgit v1.2.3 From 98870901cce098bbe94d90d2c41d8d1fa8d94392 Mon Sep 17 00:00:00 2001 From: Lin Feng Date: Wed, 12 Dec 2012 13:52:39 -0800 Subject: mm/bootmem.c: remove unused wrapper function reserve_bootmem_generic() reserve_bootmem_generic() has no caller, Signed-off-by: Lin Feng Acked-by: Johannes Weiner Cc: Yinghai Lu Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/bootmem.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h index 7b74452c5317..3f778c27f825 100644 --- a/include/linux/bootmem.h +++ b/include/linux/bootmem.h @@ -137,9 +137,6 @@ extern void *__alloc_bootmem_low_node(pg_data_t *pgdat, #define alloc_bootmem_low_pages_node(pgdat, x) \ __alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0) -extern int reserve_bootmem_generic(unsigned long addr, unsigned long size, - int flags); - #ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP extern void *alloc_remap(int nid, unsigned long size); #else -- cgit v1.2.3 From 7056741fd9fc14a65608549a4657cf5178f05f63 Mon Sep 17 00:00:00 2001 From: Jim Kukunas Date: Thu, 8 Nov 2012 13:47:44 -0800 Subject: lib/raid6: Add AVX2 optimized recovery functions Optimize RAID6 recovery functions to take advantage of the 256-bit YMM integer instructions introduced in AVX2. The patch was tested and benchmarked before submission. However hardware is not yet released so benchmark numbers cannot be reported. Acked-by: "H. Peter Anvin" Signed-off-by: Jim Kukunas Signed-off-by: NeilBrown --- include/linux/raid/pq.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/raid/pq.h b/include/linux/raid/pq.h index 640c69ceec96..3156347452b9 100644 --- a/include/linux/raid/pq.h +++ b/include/linux/raid/pq.h @@ -109,6 +109,7 @@ struct raid6_recov_calls { extern const struct raid6_recov_calls raid6_recov_intx1; extern const struct raid6_recov_calls raid6_recov_ssse3; +extern const struct raid6_recov_calls raid6_recov_avx2; /* Algorithm list */ extern const struct raid6_calls * const raid6_algos[]; -- cgit v1.2.3 From 2c935842bdb46f5f557426feb4d2bdfdad1aa5f9 Mon Sep 17 00:00:00 2001 From: Yuanhan Liu Date: Fri, 30 Nov 2012 13:10:39 -0800 Subject: lib/raid6: Add AVX2 optimized gen_syndrome functions Add AVX2 optimized gen_syndrom functions, which is simply based on sse2.c written by hpa. Signed-off-by: Yuanhan Liu Reviewed-by: H. Peter Anvin Signed-off-by: Jim Kukunas Signed-off-by: NeilBrown --- include/linux/raid/pq.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/raid/pq.h b/include/linux/raid/pq.h index 3156347452b9..8dfaa2ce2e95 100644 --- a/include/linux/raid/pq.h +++ b/include/linux/raid/pq.h @@ -98,6 +98,9 @@ extern const struct raid6_calls raid6_altivec1; extern const struct raid6_calls raid6_altivec2; extern const struct raid6_calls raid6_altivec4; extern const struct raid6_calls raid6_altivec8; +extern const struct raid6_calls raid6_avx2x1; +extern const struct raid6_calls raid6_avx2x2; +extern const struct raid6_calls raid6_avx2x4; struct raid6_recov_calls { void (*data2)(int, size_t, int, int, void **); -- cgit v1.2.3 From 83aff95eb9d60aff5497e9f44a2ae906b86d8e88 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Wed, 28 Nov 2012 12:28:24 -0800 Subject: libceph: remove 'osdtimeout' option This would reset a connection with any OSD that had an outstanding request that was taking more than N seconds. The idea was that if the OSD was buggy, the client could compensate by resending the request. In reality, this only served to hide server bugs, and we haven't actually seen such a bug in quite a while. Moreover, the userspace client code never did this. More importantly, often the request is taking a long time because the OSD is trying to recover, or overloaded, and killing the connection and retrying would only make the situation worse by giving the OSD more work to do. Signed-off-by: Sage Weil Reviewed-by: Alex Elder --- include/linux/ceph/libceph.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h index 42624789b06f..317aff8feb0a 100644 --- a/include/linux/ceph/libceph.h +++ b/include/linux/ceph/libceph.h @@ -43,7 +43,6 @@ struct ceph_options { struct ceph_entity_addr my_addr; int mount_timeout; int osd_idle_ttl; - int osd_timeout; int osd_keepalive_timeout; /* @@ -63,7 +62,6 @@ struct ceph_options { * defaults */ #define CEPH_MOUNT_TIMEOUT_DEFAULT 60 -#define CEPH_OSD_TIMEOUT_DEFAULT 60 /* seconds */ #define CEPH_OSD_KEEPALIVE_DEFAULT 5 #define CEPH_OSD_IDLE_TTL_DEFAULT 60 -- cgit v1.2.3 From d2cc4dde9206aa2c7fb237aa689d3277cc070547 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Thu, 29 Nov 2012 08:37:03 -0600 Subject: bdi_register: add __printf verification, fix arg mismatch __printf is useful to verify format and arguments. Signed-off-by: Joe Perches Reviewed-by: Alex Elder --- include/linux/backing-dev.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 2a9a9abc9126..12731a19ef06 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -114,6 +114,7 @@ struct backing_dev_info { int bdi_init(struct backing_dev_info *bdi); void bdi_destroy(struct backing_dev_info *bdi); +__printf(3, 4) int bdi_register(struct backing_dev_info *bdi, struct device *parent, const char *fmt, ...); int bdi_register_dev(struct backing_dev_info *bdi, dev_t dev); -- cgit v1.2.3 From bbacc0c111c3c5d1f3192b8cc1642b9c3954f80d Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Mon, 10 Dec 2012 10:33:09 -0700 Subject: KVM: Rename KVM_MEMORY_SLOTS -> KVM_USER_MEM_SLOTS It's easy to confuse KVM_MEMORY_SLOTS and KVM_MEM_SLOTS_NUM. One is the user accessible slots and the other is user + private. Make this more obvious. Reviewed-by: Gleb Natapov Signed-off-by: Alex Williamson Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 2c497ab0d03d..abad7f30771e 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -314,7 +314,7 @@ struct kvm_irq_routing_table {}; #endif #ifndef KVM_MEM_SLOTS_NUM -#define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS) +#define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) #endif /* -- cgit v1.2.3 From 0743247fbf0c4a27185b2aa1fdda91d0745dfed1 Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Mon, 10 Dec 2012 10:33:15 -0700 Subject: KVM: Make KVM_PRIVATE_MEM_SLOTS optional Seems like everyone copied x86 and defined 4 private memory slots that never actually get used. Even x86 only uses 3 of the 4. These aren't exposed so there's no need to add padding. Reviewed-by: Gleb Natapov Signed-off-by: Alex Williamson Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index abad7f30771e..5a3581ceb036 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -313,6 +313,10 @@ struct kvm_irq_routing_table {}; #endif +#ifndef KVM_PRIVATE_MEM_SLOTS +#define KVM_PRIVATE_MEM_SLOTS 0 +#endif + #ifndef KVM_MEM_SLOTS_NUM #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) #endif -- cgit v1.2.3 From f82a8cfe9354f5cdea55ebeceba3fd19051d3ee8 Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Mon, 10 Dec 2012 10:33:21 -0700 Subject: KVM: struct kvm_memory_slot.user_alloc -> bool There's no need for this to be an int, it holds a boolean. Move to the end of the struct for alignment. Reviewed-by: Gleb Natapov Signed-off-by: Alex Williamson Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 5a3581ceb036..d897f035749f 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -270,8 +270,8 @@ struct kvm_memory_slot { unsigned long *dirty_bitmap; struct kvm_arch_memory_slot arch; unsigned long userspace_addr; - int user_alloc; int id; + bool user_alloc; }; static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) @@ -451,10 +451,10 @@ id_to_memslot(struct kvm_memslots *slots, int id) int kvm_set_memory_region(struct kvm *kvm, struct kvm_userspace_memory_region *mem, - int user_alloc); + bool user_alloc); int __kvm_set_memory_region(struct kvm *kvm, struct kvm_userspace_memory_region *mem, - int user_alloc); + bool user_alloc); void kvm_arch_free_memslot(struct kvm_memory_slot *free, struct kvm_memory_slot *dont); int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages); @@ -462,11 +462,11 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm, struct kvm_memory_slot *memslot, struct kvm_memory_slot old, struct kvm_userspace_memory_region *mem, - int user_alloc); + bool user_alloc); void kvm_arch_commit_memory_region(struct kvm *kvm, struct kvm_userspace_memory_region *mem, struct kvm_memory_slot old, - int user_alloc); + bool user_alloc); bool kvm_largepages_enabled(void); void kvm_disable_largepages(void); /* flush all memory translations */ @@ -553,7 +553,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, struct kvm_userspace_memory_region *mem, - int user_alloc); + bool user_alloc); int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level); long kvm_arch_vm_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg); -- cgit v1.2.3 From 6104f472a5ea287fbdcf4644e74867dfd905a018 Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Mon, 10 Dec 2012 10:33:26 -0700 Subject: KVM: struct kvm_memory_slot.flags -> u32 struct kvm_userspace_memory_region.flags is a u32 with a comment that bits 0 ~ 15 are visible to userspace and the other bits are reserved for kvm internal use. KVM_MEMSLOT_INVALID is the only internal use flag and it has a comment that bits 16 ~ 31 are internally used and the other bits are visible to userspace. Therefore, let's define this as a u32 so we don't waste bytes on LP64 systems. Move to the end of the struct for alignment. Reviewed-by: Gleb Natapov Signed-off-by: Alex Williamson Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index d897f035749f..fec607537fa3 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -266,10 +266,10 @@ static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) struct kvm_memory_slot { gfn_t base_gfn; unsigned long npages; - unsigned long flags; unsigned long *dirty_bitmap; struct kvm_arch_memory_slot arch; unsigned long userspace_addr; + u32 flags; int id; bool user_alloc; }; -- cgit v1.2.3 From 1e702d9af5d633cf0eca76f6340b3c50fbb5a4e5 Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Mon, 10 Dec 2012 10:33:32 -0700 Subject: KVM: struct kvm_memory_slot.id -> short We're currently offering a whopping 32 memory slots to user space, an int is a bit excessive for storing this. We would like to increase our memslots, but SHRT_MAX should be more than enough. Reviewed-by: Gleb Natapov Signed-off-by: Alex Williamson Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index fec607537fa3..32fdc45ca35e 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -270,7 +270,7 @@ struct kvm_memory_slot { struct kvm_arch_memory_slot arch; unsigned long userspace_addr; u32 flags; - int id; + short id; bool user_alloc; }; @@ -330,7 +330,7 @@ struct kvm_memslots { u64 generation; struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; /* The mapping table from slot id to the index in memslots[]. */ - int id_to_index[KVM_MEM_SLOTS_NUM]; + short id_to_index[KVM_MEM_SLOTS_NUM]; }; struct kvm { -- cgit v1.2.3 From 34e1169d996ab148490c01b65b4ee371cf8ffba2 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Tue, 16 Oct 2012 07:31:07 +1030 Subject: module: add syscall to load module from fd As part of the effort to create a stronger boundary between root and kernel, Chrome OS wants to be able to enforce that kernel modules are being loaded only from our read-only crypto-hash verified (dm_verity) root filesystem. Since the init_module syscall hands the kernel a module as a memory blob, no reasoning about the origin of the blob can be made. Earlier proposals for appending signatures to kernel modules would not be useful in Chrome OS, since it would involve adding an additional set of keys to our kernel and builds for no good reason: we already trust the contents of our root filesystem. We don't need to verify those kernel modules a second time. Having to do signature checking on module loading would slow us down and be redundant. All we need to know is where a module is coming from so we can say yes/no to loading it. If a file descriptor is used as the source of a kernel module, many more things can be reasoned about. In Chrome OS's case, we could enforce that the module lives on the filesystem we expect it to live on. In the case of IMA (or other LSMs), it would be possible, for example, to examine extended attributes that may contain signatures over the contents of the module. This introduces a new syscall (on x86), similar to init_module, that has only two arguments. The first argument is used as a file descriptor to the module and the second argument is a pointer to the NULL terminated string of module arguments. Signed-off-by: Kees Cook Cc: Andrew Morton Signed-off-by: Rusty Russell (merge fixes) --- include/linux/syscalls.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 727f0cd73921..32bc035bcd68 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -868,4 +868,5 @@ asmlinkage long sys_process_vm_writev(pid_t pid, asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2); +asmlinkage long sys_finit_module(int fd, const char __user *uargs); #endif -- cgit v1.2.3 From 2f3238aebedb243804f58d62d57244edec4149b2 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Mon, 22 Oct 2012 18:09:41 +1030 Subject: module: add flags arg to sys_finit_module() Thanks to Michael Kerrisk for keeping us honest. These flags are actually useful for eliminating the only case where kmod has to mangle a module's internals: for overriding module versioning. Signed-off-by: Rusty Russell Acked-by: Lucas De Marchi Acked-by: Kees Cook --- include/linux/syscalls.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 32bc035bcd68..8cf7b508cb50 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -868,5 +868,5 @@ asmlinkage long sys_process_vm_writev(pid_t pid, asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2); -asmlinkage long sys_finit_module(int fd, const char __user *uargs); +asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags); #endif -- cgit v1.2.3 From 2e72d51b4ac32989496870cd8171b3682fea1839 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Tue, 16 Oct 2012 07:32:07 +1030 Subject: security: introduce kernel_module_from_file hook Now that kernel module origins can be reasoned about, provide a hook to the LSMs to make policy decisions about the module file. This will let Chrome OS enforce that loadable kernel modules can only come from its read-only hash-verified root filesystem. Other LSMs can, for example, read extended attributes for signatures, etc. Signed-off-by: Kees Cook Acked-by: Serge E. Hallyn Acked-by: Eric Paris Acked-by: Mimi Zohar Acked-by: James Morris Signed-off-by: Rusty Russell --- include/linux/security.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/security.h b/include/linux/security.h index 05e88bdcf7d9..0f6afc657f77 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -694,6 +694,12 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * userspace to load a kernel module with the given name. * @kmod_name name of the module requested by the kernel * Return 0 if successful. + * @kernel_module_from_file: + * Load a kernel module from userspace. + * @file contains the file structure pointing to the file containing + * the kernel module to load. If the module is being loaded from a blob, + * this argument will be NULL. + * Return 0 if permission is granted. * @task_fix_setuid: * Update the module's state after setting one or more of the user * identity attributes of the current process. The @flags parameter @@ -1508,6 +1514,7 @@ struct security_operations { int (*kernel_act_as)(struct cred *new, u32 secid); int (*kernel_create_files_as)(struct cred *new, struct inode *inode); int (*kernel_module_request)(char *kmod_name); + int (*kernel_module_from_file)(struct file *file); int (*task_fix_setuid) (struct cred *new, const struct cred *old, int flags); int (*task_setpgid) (struct task_struct *p, pid_t pgid); @@ -1765,6 +1772,7 @@ void security_transfer_creds(struct cred *new, const struct cred *old); int security_kernel_act_as(struct cred *new, u32 secid); int security_kernel_create_files_as(struct cred *new, struct inode *inode); int security_kernel_module_request(char *kmod_name); +int security_kernel_module_from_file(struct file *file); int security_task_fix_setuid(struct cred *new, const struct cred *old, int flags); int security_task_setpgid(struct task_struct *p, pid_t pgid); @@ -2278,6 +2286,11 @@ static inline int security_kernel_module_request(char *kmod_name) return 0; } +static inline int security_kernel_module_from_file(struct file *file) +{ + return 0; +} + static inline int security_task_fix_setuid(struct cred *new, const struct cred *old, int flags) -- cgit v1.2.3 From fdf90729e57812cb12d7938e2dee7c71e875fb08 Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Tue, 16 Oct 2012 12:40:08 +1030 Subject: ima: support new kernel module syscall With the addition of the new kernel module syscall, which defines two arguments - a file descriptor to the kernel module and a pointer to a NULL terminated string of module arguments - it is now possible to measure and appraise kernel modules like any other file on the file system. This patch adds support to measure and appraise kernel modules in an extensible and consistent manner. To support filesystems without extended attribute support, additional patches could pass the signature as the first parameter. Signed-off-by: Mimi Zohar Signed-off-by: Rusty Russell --- include/linux/ima.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ima.h b/include/linux/ima.h index 2c7223d7e73b..86c361e947b9 100644 --- a/include/linux/ima.h +++ b/include/linux/ima.h @@ -18,6 +18,7 @@ extern int ima_bprm_check(struct linux_binprm *bprm); extern int ima_file_check(struct file *file, int mask); extern void ima_file_free(struct file *file); extern int ima_file_mmap(struct file *file, unsigned long prot); +extern int ima_module_check(struct file *file); #else static inline int ima_bprm_check(struct linux_binprm *bprm) @@ -40,6 +41,11 @@ static inline int ima_file_mmap(struct file *file, unsigned long prot) return 0; } +static inline int ima_module_check(struct file *file) +{ + return 0; +} + #endif /* CONFIG_IMA_H */ #ifdef CONFIG_IMA_APPRAISE -- cgit v1.2.3 From 6f33d58794ef4cef4b2c706029810f9688bd3026 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Thu, 22 Nov 2012 12:30:25 +1030 Subject: __UNIQUE_ID() Jan Beulich points out __COUNTER__ (gcc 4.3 and above), so let's use that to create unique ids. This is better than __LINE__ which we use today, so provide a wrapper. Stanislaw Gruszka reported that some module parameters start with a digit, so we need to prepend when we for the unique id. Signed-off-by: Rusty Russell Acked-by: Jan Beulich --- include/linux/compiler-gcc4.h | 2 ++ include/linux/compiler.h | 9 +++++++++ 2 files changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h index 412bc6c2b023..56c802cba7f6 100644 --- a/include/linux/compiler-gcc4.h +++ b/include/linux/compiler-gcc4.h @@ -31,6 +31,8 @@ #define __linktime_error(message) __attribute__((__error__(message))) +#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) + #if __GNUC_MINOR__ >= 5 /* * Mark a position in code as unreachable. This can be used to diff --git a/include/linux/compiler.h b/include/linux/compiler.h index f430e4162f41..5f45335e1ac7 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -42,6 +42,10 @@ extern void __chk_io_ptr(const volatile void __iomem *); # define __rcu #endif +/* Indirect macros required for expanded argument pasting, eg. __LINE__. */ +#define ___PASTE(a,b) a##b +#define __PASTE(a,b) ___PASTE(a,b) + #ifdef __KERNEL__ #ifdef __GNUC__ @@ -164,6 +168,11 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect); (typeof(ptr)) (__ptr + (off)); }) #endif +/* Not-quite-unique ID. */ +#ifndef __UNIQUE_ID +# define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __LINE__) +#endif + #endif /* __KERNEL__ */ #endif /* __ASSEMBLY__ */ -- cgit v1.2.3 From 34182eea36fc1d70d748b0947c873314980ba806 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Thu, 22 Nov 2012 12:30:25 +1030 Subject: moduleparam: use __UNIQUE_ID() Signed-off-by: Rusty Russell --- include/linux/moduleparam.h | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h index d6a58065c09c..137b4198fc03 100644 --- a/include/linux/moduleparam.h +++ b/include/linux/moduleparam.h @@ -16,17 +16,15 @@ /* Chosen so that structs with an unsigned long line up. */ #define MAX_PARAM_PREFIX_LEN (64 - sizeof(unsigned long)) -#define ___module_cat(a,b) __mod_ ## a ## b -#define __module_cat(a,b) ___module_cat(a,b) #ifdef MODULE #define __MODULE_INFO(tag, name, info) \ -static const char __module_cat(name,__LINE__)[] \ +static const char __UNIQUE_ID(name)[] \ __used __attribute__((section(".modinfo"), unused, aligned(1))) \ = __stringify(tag) "=" info #else /* !MODULE */ /* This struct is here for syntactic coherency, it is not used */ #define __MODULE_INFO(tag, name, info) \ - struct __module_cat(name,__LINE__) {} + struct __UNIQUE_ID(name) {} #endif #define __MODULE_PARM_TYPE(name, _type) \ __MODULE_INFO(parmtype, name##type, #name ":" _type) -- cgit v1.2.3 From facc0a6bd494ce21e31b34fc355ecf702518272b Mon Sep 17 00:00:00 2001 From: David Howells Date: Wed, 5 Dec 2012 11:55:28 +1030 Subject: ASN.1: Define indefinite length marker constant Define a constant to hold the marker value seen in an indefinite-length element. Signed-off-by: David Howells Signed-off-by: Rusty Russell --- include/linux/asn1.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/asn1.h b/include/linux/asn1.h index 5c3f4e4b9a23..eed6982860ba 100644 --- a/include/linux/asn1.h +++ b/include/linux/asn1.h @@ -64,4 +64,6 @@ enum asn1_tag { ASN1_LONG_TAG = 31 /* Long form tag */ }; +#define ASN1_INDEFINITE_LENGTH 0x80 + #endif /* _LINUX_ASN1_H */ -- cgit v1.2.3 From 8349e5aeaadd160b7cce554a62a05be4b2d894aa Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Fri, 14 Dec 2012 09:34:01 -0500 Subject: Revert "libata: check SATA_SETTINGS log with HW Feature Ctrl" This reverts commit de90cd71f68e947d3bd6c3f2ef5731ead010a768. Shane Huang writes: Please suspend this patch because I just received two new DevSlp drives but found word 78 bit 5 is _not_ set. I'm checking with the drive vendor whether he gave me the wrong information. If bit 5 is not the necessary and sufficient condition, I will implement another patch to replace ata_device->sata_settings into ->devslp_timing. Signed-off-by: Jeff Garzik --- include/linux/ata.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ata.h b/include/linux/ata.h index 18cbb93fdbca..408da9502177 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -593,7 +593,6 @@ static inline int ata_is_data(u8 prot) #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20) #define ata_id_has_da(id) ((id)[ATA_ID_SATA_CAPABILITY_2] & (1 << 4)) #define ata_id_has_devslp(id) ((id)[ATA_ID_FEATURE_SUPP] & (1 << 8)) -#define ata_id_has_hw_feature_ctrl(id) ((id)[ATA_ID_FEATURE_SUPP] & (1 << 5)) static inline bool ata_id_has_hipm(const u16 *id) { -- cgit v1.2.3 From 8dd2cb7e880d2f77fba53b523c99133ad5054cfd Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Fri, 14 Dec 2012 11:15:36 +0800 Subject: block: discard granularity might not be power of 2 In MD raid case, discard granularity might not be power of 2, for example, a 4-disk raid5 has 3*chunk_size discard granularity. Correct the calculation for such cases. Reported-by: Neil Brown Signed-off-by: Shaohua Li Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index c9d233e727f2..acb4f7bbbd32 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1188,13 +1188,14 @@ static inline int queue_discard_alignment(struct request_queue *q) static inline int queue_limit_discard_alignment(struct queue_limits *lim, sector_t sector) { - unsigned int alignment = (sector << 9) & (lim->discard_granularity - 1); + sector_t alignment = sector << 9; + alignment = sector_div(alignment, lim->discard_granularity); if (!lim->max_discard_sectors) return 0; - return (lim->discard_granularity + lim->discard_alignment - alignment) - & (lim->discard_granularity - 1); + alignment = lim->discard_granularity + lim->discard_alignment - alignment; + return sector_div(alignment, lim->discard_granularity); } static inline int bdev_discard_alignment(struct block_device *bdev) -- cgit v1.2.3 From 63b68901dfd590cc13d4fe5c08dec2ca75b3c4aa Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Fri, 14 Dec 2012 09:09:11 -0800 Subject: mfd: omap-usb-host: get rid of cpu_is_omap..() macros Instead of using cpu_is_omap..() macros in the device driver we rely on information provided in the platform data. The only information we need is whether the USB Host module has a single ULPI bypass control bit for all ports or individual bypass control bits for each port. OMAP3 REV2.1 and earlier have the former. Signed-off-by: Roger Quadros Acked-by: Samuel Ortiz [tony@atomide.com: updated to remove plat/cpu.h] Signed-off-by: Tony Lindgren --- include/linux/platform_data/usb-omap.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/usb-omap.h b/include/linux/platform_data/usb-omap.h index 8570bcfe6311..ef65b67c56c3 100644 --- a/include/linux/platform_data/usb-omap.h +++ b/include/linux/platform_data/usb-omap.h @@ -59,6 +59,9 @@ struct usbhs_omap_platform_data { struct ehci_hcd_omap_platform_data *ehci_data; struct ohci_hcd_omap_platform_data *ohci_data; + + /* OMAP3 <= ES2.1 have a single ulpi bypass control bit */ + unsigned single_ulpi_bypass:1; }; /*-------------------------------------------------------------------------*/ -- cgit v1.2.3 From d9ba573718666df2e7e30d671f81bba39d07f91c Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Fri, 14 Dec 2012 09:09:11 -0800 Subject: ARM: OMAP: Move plat/omap-serial.h to include/linux/platform_data/serial-omap.h We need to move this file to allow ARM multiplatform configurations to build for omap2+. This can now be done as this file now only contains platform_data. cc: Russell King cc: Alan Cox cc: Greg Kroah-Hartman cc: Govindraj.R cc: Kevin Hilman cc: linux-serial@vger.kernel.org Reviewed-by: Felipe Balbi Signed-off-by: Tony Lindgren --- include/linux/platform_data/serial-omap.h | 51 +++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 include/linux/platform_data/serial-omap.h (limited to 'include/linux') diff --git a/include/linux/platform_data/serial-omap.h b/include/linux/platform_data/serial-omap.h new file mode 100644 index 000000000000..ff9b0aab5281 --- /dev/null +++ b/include/linux/platform_data/serial-omap.h @@ -0,0 +1,51 @@ +/* + * Driver for OMAP-UART controller. + * Based on drivers/serial/8250.c + * + * Copyright (C) 2010 Texas Instruments. + * + * Authors: + * Govindraj R + * Thara Gopinath + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef __OMAP_SERIAL_H__ +#define __OMAP_SERIAL_H__ + +#include +#include +#include + +#define DRIVER_NAME "omap_uart" + +/* + * Use tty device name as ttyO, [O -> OMAP] + * in bootargs we specify as console=ttyO0 if uart1 + * is used as console uart. + */ +#define OMAP_SERIAL_NAME "ttyO" + +struct omap_uart_port_info { + bool dma_enabled; /* To specify DMA Mode */ + unsigned int uartclk; /* UART clock rate */ + upf_t flags; /* UPF_* flags */ + unsigned int dma_rx_buf_size; + unsigned int dma_rx_timeout; + unsigned int autosuspend_timeout; + unsigned int dma_rx_poll_rate; + int DTR_gpio; + int DTR_inverted; + int DTR_present; + + int (*get_context_loss_count)(struct device *); + void (*set_forceidle)(struct device *); + void (*set_noidle)(struct device *); + void (*enable_wakeup)(struct device *, bool); +}; + +#endif /* __OMAP_SERIAL_H__ */ -- cgit v1.2.3 From 8e63b6a8adabb0551124c3b78f7f5f36912c3728 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 15 Dec 2012 15:21:52 -0500 Subject: NFSv4.1: Move the RPC timestamp out of the slot. Shave a few bytes off the slot table size by moving the RPC timestamp into the sequence results. Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index a55abd499c21..29adb12c7ecf 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -194,6 +194,7 @@ struct nfs4_sequence_args { struct nfs4_sequence_res { struct nfs4_slot *sr_slot; /* slot used to send request */ + unsigned long sr_timestamp; int sr_status; /* sequence operation status */ u32 sr_status_flags; u32 sr_highest_slotid; -- cgit v1.2.3 From 11520e5e7c1855fc3bf202bb3be35a39d9efa034 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 15 Dec 2012 15:15:24 -0800 Subject: Revert "x86-64/efi: Use EFI to deal with platform wall clock (again)" This reverts commit bd52276fa1d4 ("x86-64/efi: Use EFI to deal with platform wall clock (again)"), and the two supporting commits: da5a108d05b4: "x86/kernel: remove tboot 1:1 page table creation code" 185034e72d59: "x86, efi: 1:1 pagetable mapping for virtual EFI calls") as they all depend semantically on commit 53b87cf088e2 ("x86, mm: Include the entire kernel memory map in trampoline_pgd") that got reverted earlier due to the problems it caused. This was pointed out by Yinghai Lu, and verified by me on my Macbook Air that uses EFI. Pointed-out-by: Yinghai Lu Signed-off-by: Linus Torvalds --- include/linux/efi.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/efi.h b/include/linux/efi.h index 02a69418be18..8b84916dc671 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -587,6 +587,8 @@ extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size); extern int __init efi_uart_console_only (void); extern void efi_initialize_iomem_resources(struct resource *code_resource, struct resource *data_resource, struct resource *bss_resource); +extern unsigned long efi_get_time(void); +extern int efi_set_rtc_mmss(unsigned long nowtime); extern void efi_reserve_boot_services(void); extern struct efi_memory_map memmap; -- cgit v1.2.3 From 9360b53661a2c7754517b2925580055bacc8ec38 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Mon, 17 Dec 2012 11:29:09 -0800 Subject: Revert "bdi: add a user-tunable cpu_list for the bdi flusher threads" This reverts commit 8fa72d234da9b6b473bbb1f74d533663e4996e6b. People disagree about how this should be done, so let's revert this for now so that nobody starts using the new tuning interface. Tejun is thinking about a more generic interface for thread pool affinity. Requested-by: Tejun Heo Acked-by: Jeff Moyer Acked-by: Jens Axboe Signed-off-by: Linus Torvalds --- include/linux/backing-dev.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 238521a19849..2a9a9abc9126 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -18,7 +18,6 @@ #include #include #include -#include struct page; struct device; @@ -106,9 +105,6 @@ struct backing_dev_info { struct timer_list laptop_mode_wb_timer; - cpumask_t *flusher_cpumask; /* used for writeback thread scheduling */ - struct mutex flusher_cpumask_lock; - #ifdef CONFIG_DEBUG_FS struct dentry *debug_dir; struct dentry *debug_stats; -- cgit v1.2.3 From 7929d407e47fbf843fe1337fd95ed57785ae5e9d Mon Sep 17 00:00:00 2001 From: Matthew Leach Date: Mon, 17 Dec 2012 15:59:32 -0800 Subject: include/linux/init.h: use the stringify operator for the __define_initcall macro Currently the __define_initcall() macro takes three arguments, fn, id and level. The level argument is exactly the same as the id argument but wrapped in quotes. To overcome this need to specify three arguments to the __define_initcall macro, where one argument is the stringification of another, we can just use the stringification macro instead. Signed-off-by: Matthew Leach Cc: Benjamin Herrenschmidt Cc: Rusty Russell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/init.h | 40 ++++++++++++++++++++-------------------- 1 file changed, 20 insertions(+), 20 deletions(-) (limited to 'include/linux') diff --git a/include/linux/init.h b/include/linux/init.h index f63692d6902e..a799273714ac 100644 --- a/include/linux/init.h +++ b/include/linux/init.h @@ -182,16 +182,16 @@ extern bool initcall_debug; * can point at the same handler without causing duplicate-symbol build errors. */ -#define __define_initcall(level,fn,id) \ +#define __define_initcall(fn, id) \ static initcall_t __initcall_##fn##id __used \ - __attribute__((__section__(".initcall" level ".init"))) = fn + __attribute__((__section__(".initcall" #id ".init"))) = fn /* * Early initcalls run before initializing SMP. * * Only for built-in code, not modules. */ -#define early_initcall(fn) __define_initcall("early",fn,early) +#define early_initcall(fn) __define_initcall(fn, early) /* * A "pure" initcall has no dependencies on anything else, and purely @@ -200,23 +200,23 @@ extern bool initcall_debug; * This only exists for built-in code, not for modules. * Keep main.c:initcall_level_names[] in sync. */ -#define pure_initcall(fn) __define_initcall("0",fn,0) - -#define core_initcall(fn) __define_initcall("1",fn,1) -#define core_initcall_sync(fn) __define_initcall("1s",fn,1s) -#define postcore_initcall(fn) __define_initcall("2",fn,2) -#define postcore_initcall_sync(fn) __define_initcall("2s",fn,2s) -#define arch_initcall(fn) __define_initcall("3",fn,3) -#define arch_initcall_sync(fn) __define_initcall("3s",fn,3s) -#define subsys_initcall(fn) __define_initcall("4",fn,4) -#define subsys_initcall_sync(fn) __define_initcall("4s",fn,4s) -#define fs_initcall(fn) __define_initcall("5",fn,5) -#define fs_initcall_sync(fn) __define_initcall("5s",fn,5s) -#define rootfs_initcall(fn) __define_initcall("rootfs",fn,rootfs) -#define device_initcall(fn) __define_initcall("6",fn,6) -#define device_initcall_sync(fn) __define_initcall("6s",fn,6s) -#define late_initcall(fn) __define_initcall("7",fn,7) -#define late_initcall_sync(fn) __define_initcall("7s",fn,7s) +#define pure_initcall(fn) __define_initcall(fn, 0) + +#define core_initcall(fn) __define_initcall(fn, 1) +#define core_initcall_sync(fn) __define_initcall(fn, 1s) +#define postcore_initcall(fn) __define_initcall(fn, 2) +#define postcore_initcall_sync(fn) __define_initcall(fn, 2s) +#define arch_initcall(fn) __define_initcall(fn, 3) +#define arch_initcall_sync(fn) __define_initcall(fn, 3s) +#define subsys_initcall(fn) __define_initcall(fn, 4) +#define subsys_initcall_sync(fn) __define_initcall(fn, 4s) +#define fs_initcall(fn) __define_initcall(fn, 5) +#define fs_initcall_sync(fn) __define_initcall(fn, 5s) +#define rootfs_initcall(fn) __define_initcall(fn, rootfs) +#define device_initcall(fn) __define_initcall(fn, 6) +#define device_initcall_sync(fn) __define_initcall(fn, 6s) +#define late_initcall(fn) __define_initcall(fn, 7) +#define late_initcall_sync(fn) __define_initcall(fn, 7s) #define __initcall(fn) device_initcall(fn) -- cgit v1.2.3 From 965c8e59cfcf845ecde2265a1d1bfee5f011d302 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Mon, 17 Dec 2012 15:59:39 -0800 Subject: lseek: the "whence" argument is called "whence" But the kernel decided to call it "origin" instead. Fix most of the sites. Acked-by: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fs.h | 12 ++++++------ include/linux/ftrace.h | 4 ++-- include/linux/syscalls.h | 4 ++-- 3 files changed, 10 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 408fb1e77a0a..029552ff774c 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2286,9 +2286,9 @@ extern ino_t find_inode_number(struct dentry *, struct qstr *); #include /* needed for stackable file system support */ -extern loff_t default_llseek(struct file *file, loff_t offset, int origin); +extern loff_t default_llseek(struct file *file, loff_t offset, int whence); -extern loff_t vfs_llseek(struct file *file, loff_t offset, int origin); +extern loff_t vfs_llseek(struct file *file, loff_t offset, int whence); extern int inode_init_always(struct super_block *, struct inode *); extern void inode_init_once(struct inode *); @@ -2396,11 +2396,11 @@ extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out, extern void file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping); -extern loff_t noop_llseek(struct file *file, loff_t offset, int origin); -extern loff_t no_llseek(struct file *file, loff_t offset, int origin); -extern loff_t generic_file_llseek(struct file *file, loff_t offset, int origin); +extern loff_t noop_llseek(struct file *file, loff_t offset, int whence); +extern loff_t no_llseek(struct file *file, loff_t offset, int whence); +extern loff_t generic_file_llseek(struct file *file, loff_t offset, int whence); extern loff_t generic_file_llseek_size(struct file *file, loff_t offset, - int origin, loff_t maxsize, loff_t eof); + int whence, loff_t maxsize, loff_t eof); extern int generic_file_open(struct inode * inode, struct file * filp); extern int nonseekable_open(struct inode * inode, struct file * filp); diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index a52f2f4fe030..92691d85c320 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -394,7 +394,7 @@ ssize_t ftrace_filter_write(struct file *file, const char __user *ubuf, size_t cnt, loff_t *ppos); ssize_t ftrace_notrace_write(struct file *file, const char __user *ubuf, size_t cnt, loff_t *ppos); -loff_t ftrace_regex_lseek(struct file *file, loff_t offset, int origin); +loff_t ftrace_regex_lseek(struct file *file, loff_t offset, int whence); int ftrace_regex_release(struct inode *inode, struct file *file); void __init @@ -559,7 +559,7 @@ static inline ssize_t ftrace_filter_write(struct file *file, const char __user * size_t cnt, loff_t *ppos) { return -ENODEV; } static inline ssize_t ftrace_notrace_write(struct file *file, const char __user *ubuf, size_t cnt, loff_t *ppos) { return -ENODEV; } -static inline loff_t ftrace_regex_lseek(struct file *file, loff_t offset, int origin) +static inline loff_t ftrace_regex_lseek(struct file *file, loff_t offset, int whence) { return -ENODEV; } diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 91835e7f364d..36c3b07c5119 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -560,10 +560,10 @@ asmlinkage long sys_utime(char __user *filename, asmlinkage long sys_utimes(char __user *filename, struct timeval __user *utimes); asmlinkage long sys_lseek(unsigned int fd, off_t offset, - unsigned int origin); + unsigned int whence); asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high, unsigned long offset_low, loff_t __user *result, - unsigned int origin); + unsigned int whence); asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count); asmlinkage long sys_readahead(int fd, loff_t offset, size_t count); asmlinkage long sys_readv(unsigned long fd, -- cgit v1.2.3 From 8cc9764c9c7d01a6e2c3ddac8f0ac7716be01868 Mon Sep 17 00:00:00 2001 From: "Kim, Milo" Date: Mon, 17 Dec 2012 16:00:43 -0800 Subject: drivers/video/backlight/lp855x_bl.c: use generic PWM functions The LP855x family devices support the PWM input for the backlight control. Period of the PWM is configurable in the platform side. Platform specific functions are unnecessary anymore because generic PWM functions are used inside the driver. (PWM input mode) To set the brightness, new lp855x_pwm_ctrl() is used. If a PWM device is not allocated, devm_pwm_get() is called. The PWM consumer name is from the chip name such as 'lp8550' and 'lp8556'. To get the brightness value, no additional handling is required. Just the value of 'props.brightness' is returned. If the PWM driver is not ready while initializing the LP855x driver, it's OK. The PWM device can be retrieved later, when the brightness value is changed. Documentation is updated with an example. [akpm@linux-foundation.org: coding-style simplification, per Thierry] Signed-off-by: Milo(Woogyom) Kim Cc: Thierry Reding Cc: Richard Purdie Cc: Bryan Wu Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/platform_data/lp855x.h | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/lp855x.h b/include/linux/platform_data/lp855x.h index 761f31752367..e81f62d24ee2 100644 --- a/include/linux/platform_data/lp855x.h +++ b/include/linux/platform_data/lp855x.h @@ -89,11 +89,6 @@ enum lp8556_brightness_source { LP8556_COMBINED2, /* pwm + i2c after the shaper block */ }; -struct lp855x_pwm_data { - void (*pwm_set_intensity) (int brightness, int max_brightness); - int (*pwm_get_intensity) (int max_brightness); -}; - struct lp855x_rom_data { u8 addr; u8 val; @@ -105,7 +100,7 @@ struct lp855x_rom_data { * @mode : brightness control by pwm or lp855x register * @device_control : value of DEVICE CONTROL register * @initial_brightness : initial value of backlight brightness - * @pwm_data : platform specific pwm generation functions. + * @period_ns : platform specific pwm period value. unit is nano. Only valid when mode is PWM_BASED. * @load_new_rom_data : 0 : use default configuration data @@ -118,7 +113,7 @@ struct lp855x_platform_data { enum lp855x_brightness_ctrl_mode mode; u8 device_control; int initial_brightness; - struct lp855x_pwm_data pwm_data; + unsigned int period_ns; u8 load_new_rom_data; int size_program; struct lp855x_rom_data *rom_data; -- cgit v1.2.3 From 762a936fba7bd9225ca9a96e4860f6969b6b5670 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Mon, 17 Dec 2012 16:01:06 -0800 Subject: backlight: add of_find_backlight_by_node() This function finds the struct backlight_device for a given device tree node. A dummy function is provided so that it safely compiles out if OF support is disabled. [akpm@linux-foundation.org: Don't use IS_ENABLED(CONFIG_OF)] Signed-off-by: Thierry Reding Acked-by: Jingoo Han Reviewed-by: Grant Likely Cc: Thierry Reding Reviewed-by: Grant Likely Acked-by: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/backlight.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/backlight.h b/include/linux/backlight.h index 5ffc6dda4675..da9a0825e007 100644 --- a/include/linux/backlight.h +++ b/include/linux/backlight.h @@ -134,4 +134,14 @@ struct generic_bl_info { void (*kick_battery)(void); }; +#ifdef CONFIG_OF +struct backlight_device *of_find_backlight_by_node(struct device_node *node); +#else +static inline struct backlight_device * +of_find_backlight_by_node(struct device_node *node) +{ + return NULL; +} +#endif + #endif -- cgit v1.2.3 From b18888ab256f05626193be955a7a03f01d676f8c Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Mon, 17 Dec 2012 16:01:18 -0800 Subject: string: introduce helper to get base file name from given path There are several places in the kernel that use functionality like basename(3) with the exception: in case of '/foo/bar/' we expect to get an empty string. Let's do it common helper for them. Signed-off-by: Andy Shevchenko Cc: Jason Baron Cc: YAMANE Toshiaki Cc: Greg Kroah-Hartman Cc: Steven Rostedt Cc: Frederic Weisbecker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/string.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/string.h b/include/linux/string.h index 630125818ca8..ac889c5ea11b 100644 --- a/include/linux/string.h +++ b/include/linux/string.h @@ -143,4 +143,15 @@ static inline bool strstarts(const char *str, const char *prefix) extern size_t memweight(const void *ptr, size_t bytes); +/** + * kbasename - return the last part of a pathname. + * + * @path: path to extract the filename from. + */ +static inline const char *kbasename(const char *path) +{ + const char *tail = strrchr(path, '/'); + return tail ? tail + 1 : path; +} + #endif /* _LINUX_STRING_H_ */ -- cgit v1.2.3 From a1fd3e24d8a484b3265a6d485202afe093c058f3 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Mon, 17 Dec 2012 16:01:32 -0800 Subject: percpu_rw_semaphore: reimplement to not block the readers unnecessarily Currently the writer does msleep() plus synchronize_sched() 3 times to acquire/release the semaphore, and during this time the readers are blocked completely. Even if the "write" section was not actually started or if it was already finished. With this patch down_write/up_write does synchronize_sched() twice and down_read/up_read are still possible during this time, just they use the slow path. percpu_down_write() first forces the readers to use rw_semaphore and increment the "slow" counter to take the lock for reading, then it takes that rw_semaphore for writing and blocks the readers. Also. With this patch the code relies on the documented behaviour of synchronize_sched(), it doesn't try to pair synchronize_sched() with barrier. Signed-off-by: Oleg Nesterov Reviewed-by: Paul E. McKenney Cc: Linus Torvalds Cc: Mikulas Patocka Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Srikar Dronamraju Cc: Ananth N Mavinakayanahalli Cc: Anton Arapov Cc: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/percpu-rwsem.h | 83 +++++++------------------------------------- 1 file changed, 13 insertions(+), 70 deletions(-) (limited to 'include/linux') diff --git a/include/linux/percpu-rwsem.h b/include/linux/percpu-rwsem.h index bd1e86071e57..592f0d610d8e 100644 --- a/include/linux/percpu-rwsem.h +++ b/include/linux/percpu-rwsem.h @@ -2,82 +2,25 @@ #define _LINUX_PERCPU_RWSEM_H #include +#include #include -#include -#include +#include struct percpu_rw_semaphore { - unsigned __percpu *counters; - bool locked; - struct mutex mtx; + unsigned int __percpu *fast_read_ctr; + struct mutex writer_mutex; + struct rw_semaphore rw_sem; + atomic_t slow_read_ctr; + wait_queue_head_t write_waitq; }; -#define light_mb() barrier() -#define heavy_mb() synchronize_sched_expedited() +extern void percpu_down_read(struct percpu_rw_semaphore *); +extern void percpu_up_read(struct percpu_rw_semaphore *); -static inline void percpu_down_read(struct percpu_rw_semaphore *p) -{ - rcu_read_lock_sched(); - if (unlikely(p->locked)) { - rcu_read_unlock_sched(); - mutex_lock(&p->mtx); - this_cpu_inc(*p->counters); - mutex_unlock(&p->mtx); - return; - } - this_cpu_inc(*p->counters); - rcu_read_unlock_sched(); - light_mb(); /* A, between read of p->locked and read of data, paired with D */ -} +extern void percpu_down_write(struct percpu_rw_semaphore *); +extern void percpu_up_write(struct percpu_rw_semaphore *); -static inline void percpu_up_read(struct percpu_rw_semaphore *p) -{ - light_mb(); /* B, between read of the data and write to p->counter, paired with C */ - this_cpu_dec(*p->counters); -} - -static inline unsigned __percpu_count(unsigned __percpu *counters) -{ - unsigned total = 0; - int cpu; - - for_each_possible_cpu(cpu) - total += ACCESS_ONCE(*per_cpu_ptr(counters, cpu)); - - return total; -} - -static inline void percpu_down_write(struct percpu_rw_semaphore *p) -{ - mutex_lock(&p->mtx); - p->locked = true; - synchronize_sched_expedited(); /* make sure that all readers exit the rcu_read_lock_sched region */ - while (__percpu_count(p->counters)) - msleep(1); - heavy_mb(); /* C, between read of p->counter and write to data, paired with B */ -} - -static inline void percpu_up_write(struct percpu_rw_semaphore *p) -{ - heavy_mb(); /* D, between write to data and write to p->locked, paired with A */ - p->locked = false; - mutex_unlock(&p->mtx); -} - -static inline int percpu_init_rwsem(struct percpu_rw_semaphore *p) -{ - p->counters = alloc_percpu(unsigned); - if (unlikely(!p->counters)) - return -ENOMEM; - p->locked = false; - mutex_init(&p->mtx); - return 0; -} - -static inline void percpu_free_rwsem(struct percpu_rw_semaphore *p) -{ - free_percpu(p->counters); - p->counters = NULL; /* catch use after free bugs */ -} +extern int percpu_init_rwsem(struct percpu_rw_semaphore *); +extern void percpu_free_rwsem(struct percpu_rw_semaphore *); #endif -- cgit v1.2.3 From 9390ef0c85fd065f01045fef708b046c98cda04c Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Mon, 17 Dec 2012 16:01:36 -0800 Subject: percpu_rw_semaphore: kill ->writer_mutex, add ->write_ctr percpu_rw_semaphore->writer_mutex was only added to simplify the initial rewrite, the only thing it protects is clear_fast_ctr() which otherwise could be called by multiple writers. ->rw_sem is enough to serialize the writers. Kill this mutex and add "atomic_t write_ctr" instead. The writers increment/decrement this counter, the readers check it is zero instead of mutex_is_locked(). Move atomic_add(clear_fast_ctr(), slow_read_ctr) under down_write() to avoid the race with other writers. This is a bit sub-optimal, only the first writer needs this and we do not need to exclude the readers at this stage. But this is simple, we do not want another internal lock until we add more features. And this speeds up the write-contended case. Before this patch the racing writers sleep in synchronize_sched_expedited() sequentially, with this patch multiple synchronize_sched_expedited's can "overlap" with each other. Note: we can do more optimizations, this is only the first step. Signed-off-by: Oleg Nesterov Cc: Anton Arapov Cc: Ingo Molnar Cc: Linus Torvalds Cc: Michal Marek Cc: Mikulas Patocka Cc: "Paul E. McKenney" Cc: Peter Zijlstra Cc: Srikar Dronamraju Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/percpu-rwsem.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/percpu-rwsem.h b/include/linux/percpu-rwsem.h index 592f0d610d8e..d2146a4f833e 100644 --- a/include/linux/percpu-rwsem.h +++ b/include/linux/percpu-rwsem.h @@ -1,14 +1,14 @@ #ifndef _LINUX_PERCPU_RWSEM_H #define _LINUX_PERCPU_RWSEM_H -#include +#include #include #include #include struct percpu_rw_semaphore { unsigned int __percpu *fast_read_ctr; - struct mutex writer_mutex; + atomic_t write_ctr; struct rw_semaphore rw_sem; atomic_t slow_read_ctr; wait_queue_head_t write_waitq; -- cgit v1.2.3 From 8ebe34731a0d1a9d89b536430afd98d0fadec99b Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Mon, 17 Dec 2012 16:01:38 -0800 Subject: percpu_rw_semaphore: add lockdep annotations Add lockdep annotations. Not only this can help to find the potential problems, we do not want the false warnings if, say, the task takes two different percpu_rw_semaphore's for reading. IOW, at least ->rw_sem should not use a single class. This patch exposes this internal lock to lockdep so that it represents the whole percpu_rw_semaphore. This way we do not need to add another "fake" ->lockdep_map and lock_class_key. More importantly, this also makes the output from lockdep much more understandable if it finds the problem. In short, with this patch from lockdep pov percpu_down_read() and percpu_up_read() acquire/release ->rw_sem for reading, this matches the actual semantics. This abuses __up_read() but I hope this is fine and in fact I'd like to have down_read_no_lockdep() as well, percpu_down_read_recursive_readers() will need it. Signed-off-by: Oleg Nesterov Cc: Anton Arapov Cc: Ingo Molnar Cc: Linus Torvalds Cc: Michal Marek Cc: Mikulas Patocka Cc: "Paul E. McKenney" Cc: Peter Zijlstra Cc: Srikar Dronamraju Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/percpu-rwsem.h | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/percpu-rwsem.h b/include/linux/percpu-rwsem.h index d2146a4f833e..3e88c9a7d57f 100644 --- a/include/linux/percpu-rwsem.h +++ b/include/linux/percpu-rwsem.h @@ -5,6 +5,7 @@ #include #include #include +#include struct percpu_rw_semaphore { unsigned int __percpu *fast_read_ctr; @@ -20,7 +21,14 @@ extern void percpu_up_read(struct percpu_rw_semaphore *); extern void percpu_down_write(struct percpu_rw_semaphore *); extern void percpu_up_write(struct percpu_rw_semaphore *); -extern int percpu_init_rwsem(struct percpu_rw_semaphore *); +extern int __percpu_init_rwsem(struct percpu_rw_semaphore *, + const char *, struct lock_class_key *); extern void percpu_free_rwsem(struct percpu_rw_semaphore *); +#define percpu_init_rwsem(brw) \ +({ \ + static struct lock_class_key rwsem_key; \ + __percpu_init_rwsem(brw, #brw, &rwsem_key); \ +}) + #endif -- cgit v1.2.3 From 0ad50c3896afbb3c103409a18260e601b87a744c Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Mon, 17 Dec 2012 16:01:45 -0800 Subject: compat: generic compat_sys_sched_rr_get_interval() implementation This function is used by sparc, powerpc tile and arm64 for compat support. The patch adds a generic implementation with a wrapper for PowerPC to do the u32->int sign extension. The reason for a single patch covering powerpc, tile, sparc and arm64 is to keep it bisectable, otherwise kernel building may fail with mismatched function declarations. Signed-off-by: Catalin Marinas Acked-by: Chris Metcalf [for tile] Acked-by: David S. Miller Acked-by: Arnd Bergmann Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Alexander Viro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/compat.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/compat.h b/include/linux/compat.h index 784ebfe63c48..e4920bd58a47 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -588,6 +588,9 @@ asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid, asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, compat_size_t count); +asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, + struct compat_timespec __user *interval); + #else #define is_compat_task() (0) -- cgit v1.2.3 From 4c925d6031f719fad6ea8b1c94a636f4c0fea39b Mon Sep 17 00:00:00 2001 From: Eldad Zack Date: Mon, 17 Dec 2012 16:03:04 -0800 Subject: kstrto*: add documentation As Bruce Fields pointed out, kstrto* is currently lacking kerneldoc comments. This patch adds kerneldoc comments to common variants of kstrto*: kstrto(u)l, kstrto(u)ll and kstrto(u)int. Signed-off-by: Eldad Zack Cc: J. Bruce Fields Cc: Joe Perches Cc: Randy Dunlap Cc: Alexey Dobriyan Cc: Rob Landley Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kernel.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index d97ed5897447..d140e8fb075f 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -220,6 +220,23 @@ int __must_check _kstrtol(const char *s, unsigned int base, long *res); int __must_check kstrtoull(const char *s, unsigned int base, unsigned long long *res); int __must_check kstrtoll(const char *s, unsigned int base, long long *res); + +/** + * kstrtoul - convert a string to an unsigned long + * @s: The start of the string. The string must be null-terminated, and may also + * include a single newline before its terminating null. The first character + * may also be a plus sign, but not a minus sign. + * @base: The number base to use. The maximum supported base is 16. If base is + * given as 0, then the base of the string is automatically detected with the + * conventional semantics - If it begins with 0x the number will be parsed as a + * hexadecimal (case insensitive), if it otherwise begins with 0, it will be + * parsed as an octal number. Otherwise it will be parsed as a decimal. + * @res: Where to write the result of the conversion on success. + * + * Returns 0 on success, -ERANGE on overflow and -EINVAL on parsing error. + * Used as a replacement for the obsolete simple_strtoull. Return code must + * be checked. +*/ static inline int __must_check kstrtoul(const char *s, unsigned int base, unsigned long *res) { /* @@ -233,6 +250,22 @@ static inline int __must_check kstrtoul(const char *s, unsigned int base, unsign return _kstrtoul(s, base, res); } +/** + * kstrtol - convert a string to a long + * @s: The start of the string. The string must be null-terminated, and may also + * include a single newline before its terminating null. The first character + * may also be a plus sign or a minus sign. + * @base: The number base to use. The maximum supported base is 16. If base is + * given as 0, then the base of the string is automatically detected with the + * conventional semantics - If it begins with 0x the number will be parsed as a + * hexadecimal (case insensitive), if it otherwise begins with 0, it will be + * parsed as an octal number. Otherwise it will be parsed as a decimal. + * @res: Where to write the result of the conversion on success. + * + * Returns 0 on success, -ERANGE on overflow and -EINVAL on parsing error. + * Used as a replacement for the obsolete simple_strtoull. Return code must + * be checked. + */ static inline int __must_check kstrtol(const char *s, unsigned int base, long *res) { /* -- cgit v1.2.3 From 992fb6e170639b0849bace8e49bf31bd37c4123c Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Mon, 17 Dec 2012 16:03:07 -0800 Subject: ptrace: introduce PTRACE_O_EXITKILL Ptrace jailers want to be sure that the tracee can never escape from the control. However if the tracer dies unexpectedly the tracee continues to run in potentially unsafe mode. Add the new ptrace option PTRACE_O_EXITKILL. If the tracer exits it sends SIGKILL to every tracee which has this bit set. Note that the new option is not equal to the last-option << 1. Because currently all options have an event, and the new one starts the eventless group. It uses the random 20 bit, so we have the room for 12 more events, but we can also add the new eventless options below this one. Suggested by Amnon Shiloh. Signed-off-by: Oleg Nesterov Tested-by: Amnon Shiloh Cc: Denys Vlasenko Cc: Michael Kerrisk Cc: Serge Hallyn Cc: Chris Evans Cc: David Howells Cc: "Eric W. Biederman" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/ptrace.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index a89ff04bddd9..addfbe7c180e 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -32,6 +32,8 @@ #define PT_TRACE_EXIT PT_EVENT_FLAG(PTRACE_EVENT_EXIT) #define PT_TRACE_SECCOMP PT_EVENT_FLAG(PTRACE_EVENT_SECCOMP) +#define PT_EXITKILL (PTRACE_O_EXITKILL << PT_OPT_FLAG_SHIFT) + /* single stepping state bits (used on ARM and PA-RISC) */ #define PT_SINGLESTEP_BIT 31 #define PT_SINGLESTEP (1< Date: Mon, 17 Dec 2012 16:03:20 -0800 Subject: exec: use -ELOOP for max recursion depth To avoid an explosion of request_module calls on a chain of abusive scripts, fail maximum recursion with -ELOOP instead of -ENOEXEC. As soon as maximum recursion depth is hit, the error will fail all the way back up the chain, aborting immediately. This also has the side-effect of stopping the user's shell from attempting to reexecute the top-level file as a shell script. As seen in the dash source: if (cmd != path_bshell && errno == ENOEXEC) { *argv-- = cmd; *argv = cmd = path_bshell; goto repeat; } The above logic was designed for running scripts automatically that lacked the "#!" header, not to re-try failed recursion. On a legitimate -ENOEXEC, things continue to behave as the shell expects. Additionally, when tracking recursion, the binfmt handlers should not be involved. The recursion being tracked is the depth of calls through search_binary_handler(), so that function should be exclusively responsible for tracking the depth. Signed-off-by: Kees Cook Cc: halfdog Cc: P J P Cc: Alexander Viro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/binfmts.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h index 2630c9b41a86..a4c2b565c835 100644 --- a/include/linux/binfmts.h +++ b/include/linux/binfmts.h @@ -54,8 +54,6 @@ struct linux_binprm { #define BINPRM_FLAGS_EXECFD_BIT 1 #define BINPRM_FLAGS_EXECFD (1 << BINPRM_FLAGS_EXECFD_BIT) -#define BINPRM_MAX_RECURSION 4 - /* Function parameter for binfmt->coredump */ struct coredump_params { siginfo_t *siginfo; -- cgit v1.2.3 From a5ba911ec3792168530d35e16a8ec3b6fc60bcb5 Mon Sep 17 00:00:00 2001 From: Gao feng Date: Mon, 17 Dec 2012 16:03:22 -0800 Subject: pidns: remove unused is_container_init() Since commit 1cdcbec1a337 ("CRED: Neuter sys_capset()") is_container_init() has no callers. Signed-off-by: Gao feng Cc: David Howells Acked-by: Serge Hallyn Cc: James Morris Cc: "Eric W. Biederman" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sched.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index b089c92c609b..9914c662ed7b 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1778,12 +1778,6 @@ static inline int is_global_init(struct task_struct *tsk) return tsk->pid == 1; } -/* - * is_container_init: - * check whether in the task is init in its own pid namespace. - */ -extern int is_container_init(struct task_struct *tsk); - extern struct pid *cad_pid; extern void free_task(struct task_struct *tsk); -- cgit v1.2.3 From 8529091e8e2ae25e0f4003086f619765ff255e4b Mon Sep 17 00:00:00 2001 From: Josh Triplett Date: Mon, 17 Dec 2012 16:03:24 -0800 Subject: linux/compiler.h: add __must_hold macro for functions called with a lock held linux/compiler.h has macros to denote functions that acquire or release locks, but not to denote functions called with a lock held that return with the lock still held. Add a __must_hold macro to cover that case. Signed-off-by: Josh Triplett Reported-by: Ed Cashin Tested-by: Ed Cashin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/compiler.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/compiler.h b/include/linux/compiler.h index f430e4162f41..b121554f1fe2 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -10,6 +10,7 @@ # define __force __attribute__((force)) # define __nocast __attribute__((nocast)) # define __iomem __attribute__((noderef, address_space(2))) +# define __must_hold(x) __attribute__((context(x,1,1))) # define __acquires(x) __attribute__((context(x,0,1))) # define __releases(x) __attribute__((context(x,1,0))) # define __acquire(x) __context__(x,1) @@ -33,6 +34,7 @@ extern void __chk_io_ptr(const volatile void __iomem *); # define __chk_user_ptr(x) (void)0 # define __chk_io_ptr(x) (void)0 # define __builtin_warning(x, y...) (1) +# define __must_hold(x) # define __acquires(x) # define __releases(x) # define __acquire(x) (void)0 -- cgit v1.2.3 From 496f2f93b1cc286f5a4f4f9acdc1e5314978683f Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Mon, 17 Dec 2012 16:04:23 -0800 Subject: random32: rename random32 to prandom This renames all random32 functions to have 'prandom_' prefix as follows: void prandom_seed(u32 seed); /* rename from srandom32() */ u32 prandom_u32(void); /* rename from random32() */ void prandom_seed_state(struct rnd_state *state, u64 seed); /* rename from prandom32_seed() */ u32 prandom_u32_state(struct rnd_state *state); /* rename from prandom32() */ The purpose of this renaming is to prevent some kernel developers from assuming that prandom32() and random32() might imply that only prandom32() was the one using a pseudo-random number generator by prandom32's "p", and the result may be a very embarassing security exposure. This concern was expressed by Theodore Ts'o. And furthermore, I'm going to introduce new functions for getting the requested number of pseudo-random bytes. If I continue to use both prandom32 and random32 prefixes for these functions, the confusion is getting worse. As a result of this renaming, "prandom_" is the common prefix for pseudo-random number library. Currently, srandom32() and random32() are preserved because it is difficult to rename too many users at once. Signed-off-by: Akinobu Mita Cc: "Theodore Ts'o" Cc: Robert Love Cc: Michel Lespinasse Cc: Valdis Kletnieks Cc: David Laight Cc: Adrian Hunter Cc: Artem Bityutskiy Cc: David Woodhouse Cc: Eilon Greenstein Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/random.h | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/random.h b/include/linux/random.h index 6330ed47b38b..db6debc6649e 100644 --- a/include/linux/random.h +++ b/include/linux/random.h @@ -25,10 +25,17 @@ extern const struct file_operations random_fops, urandom_fops; unsigned int get_random_int(void); unsigned long randomize_range(unsigned long start, unsigned long end, unsigned long len); -u32 random32(void); -void srandom32(u32 seed); +u32 prandom_u32(void); +void prandom_seed(u32 seed); -u32 prandom32(struct rnd_state *); +/* + * These macros are preserved for backward compatibility and should be + * removed as soon as a transition is finished. + */ +#define random32() prandom_u32() +#define srandom32(seed) prandom_seed(seed) + +u32 prandom_u32_state(struct rnd_state *); /* * Handle minimum values for seeds @@ -39,11 +46,11 @@ static inline u32 __seed(u32 x, u32 m) } /** - * prandom32_seed - set seed for prandom32(). + * prandom_seed_state - set seed for prandom_u32_state(). * @state: pointer to state structure to receive the seed. * @seed: arbitrary 64-bit value to use as a seed. */ -static inline void prandom32_seed(struct rnd_state *state, u64 seed) +static inline void prandom_seed_state(struct rnd_state *state, u64 seed) { u32 i = (seed >> 32) ^ (seed << 10) ^ seed; -- cgit v1.2.3 From 6582c665d6b882dad8329e05749fbcf119f1ab88 Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Mon, 17 Dec 2012 16:04:25 -0800 Subject: prandom: introduce prandom_bytes() and prandom_bytes_state() Add functions to get the requested number of pseudo-random bytes. The difference from get_random_bytes() is that it generates pseudo-random numbers by prandom_u32(). It doesn't consume the entropy pool, and the sequence is reproducible if the same rnd_state is used. So it is suitable for generating random bytes for testing. Signed-off-by: Akinobu Mita Cc: "Theodore Ts'o" Cc: Artem Bityutskiy Cc: Adrian Hunter Cc: David Woodhouse Cc: Eilon Greenstein Cc: David Laight Cc: Michel Lespinasse Cc: Robert Love Cc: Valdis Kletnieks Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/random.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/random.h b/include/linux/random.h index db6debc6649e..d9846088c2c5 100644 --- a/include/linux/random.h +++ b/include/linux/random.h @@ -26,6 +26,7 @@ unsigned int get_random_int(void); unsigned long randomize_range(unsigned long start, unsigned long end, unsigned long len); u32 prandom_u32(void); +void prandom_bytes(void *buf, int nbytes); void prandom_seed(u32 seed); /* @@ -36,6 +37,7 @@ void prandom_seed(u32 seed); #define srandom32(seed) prandom_seed(seed) u32 prandom_u32_state(struct rnd_state *); +void prandom_bytes_state(struct rnd_state *state, void *buf, int nbytes); /* * Handle minimum values for seeds -- cgit v1.2.3 From 55985dd72ab27b47530dcc8bdddd28b69f4abe8b Mon Sep 17 00:00:00 2001 From: Cyrill Gorcunov Date: Mon, 17 Dec 2012 16:04:55 -0800 Subject: procfs: add ability to plug in auxiliary fdinfo providers This patch brings ability to print out auxiliary data associated with file in procfs interface /proc/pid/fdinfo/fd. In particular further patches make eventfd, evenpoll, signalfd and fsnotify to print additional information complete enough to restore these objects after checkpoint. To simplify the code we add show_fdinfo callback inside struct file_operations (as Al and Pavel are proposing). Signed-off-by: Cyrill Gorcunov Acked-by: Pavel Emelyanov Cc: Oleg Nesterov Cc: Andrey Vagin Cc: Al Viro Cc: Alexey Dobriyan Cc: James Bottomley Cc: "Aneesh Kumar K.V" Cc: Alexey Dobriyan Cc: Matthew Helsley Cc: "J. Bruce Fields" Cc: "Aneesh Kumar K.V" Cc: Tvrtko Ursulin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fs.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 029552ff774c..5abf703d06ba 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -44,6 +44,7 @@ struct vm_area_struct; struct vfsmount; struct cred; struct swap_info_struct; +struct seq_file; extern void __init inode_init(void); extern void __init inode_init_early(void); @@ -1543,6 +1544,7 @@ struct file_operations { int (*setlease)(struct file *, long, struct file_lock **); long (*fallocate)(struct file *file, int mode, loff_t offset, loff_t len); + int (*show_fdinfo)(struct seq_file *m, struct file *f); }; struct inode_operations { @@ -1578,8 +1580,6 @@ struct inode_operations { umode_t create_mode, int *opened); } ____cacheline_aligned; -struct seq_file; - ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector, unsigned long nr_segs, unsigned long fast_segs, struct iovec *fast_pointer, -- cgit v1.2.3 From 138d22b58696c506799f8de759804083ff9effae Mon Sep 17 00:00:00 2001 From: Cyrill Gorcunov Date: Mon, 17 Dec 2012 16:05:02 -0800 Subject: fs, epoll: add procfs fdinfo helper This allows us to print out eventpoll target file descriptor, events and data, the /proc/pid/fdinfo/fd consists of | pos: 0 | flags: 02 | tfd: 5 events: 1d data: ffffffffffffffff enabled: 1 [avagin@: fix for unitialized ret variable] Signed-off-by: Cyrill Gorcunov Acked-by: Pavel Emelyanov Cc: Oleg Nesterov Cc: Andrey Vagin Cc: Al Viro Cc: Alexey Dobriyan Cc: James Bottomley Cc: "Aneesh Kumar K.V" Cc: Alexey Dobriyan Cc: Matthew Helsley Cc: "J. Bruce Fields" Cc: "Aneesh Kumar K.V" Cc: Tvrtko Ursulin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/proc_fs.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h index 3fd2e871ff1b..b4f70f0a9a48 100644 --- a/include/linux/proc_fs.h +++ b/include/linux/proc_fs.h @@ -290,4 +290,7 @@ static inline struct net *PDE_NET(struct proc_dir_entry *pde) return pde->parent->data; } +#include + +void render_sigset_t(struct seq_file *m, const char *header, sigset_t *set); #endif /* _LINUX_PROC_FS_H */ -- cgit v1.2.3 From 711c7bf9914060d7aaf3c1a15f38094a5d5e748f Mon Sep 17 00:00:00 2001 From: Cyrill Gorcunov Date: Mon, 17 Dec 2012 16:05:08 -0800 Subject: fs, exportfs: add exportfs_encode_inode_fh() helper We will need this helper in the next patch to provide a file handle for inotify marks in /proc/pid/fdinfo output. The patch is rather providing the way to use inodes directly when dentry is not available (like in case of inotify system). Signed-off-by: Cyrill Gorcunov Acked-by: Pavel Emelyanov Cc: Oleg Nesterov Cc: Andrey Vagin Cc: Al Viro Cc: Alexey Dobriyan Cc: James Bottomley Cc: "Aneesh Kumar K.V" Cc: Alexey Dobriyan Cc: Matthew Helsley Cc: "J. Bruce Fields" Cc: "Aneesh Kumar K.V" Cc: Tvrtko Ursulin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/exportfs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/exportfs.h b/include/linux/exportfs.h index 12291a7ee275..c7e6b6392ab8 100644 --- a/include/linux/exportfs.h +++ b/include/linux/exportfs.h @@ -177,6 +177,8 @@ struct export_operations { int (*commit_metadata)(struct inode *inode); }; +extern int exportfs_encode_inode_fh(struct inode *inode, struct fid *fid, + int *max_len, struct inode *parent); extern int exportfs_encode_fh(struct dentry *dentry, struct fid *fid, int *max_len, int connectable); extern struct dentry *exportfs_decode_fh(struct vfsmount *mnt, struct fid *fid, -- cgit v1.2.3 From ebb351cf78ee6bf3262e6b4b6906f456c05e6d5e Mon Sep 17 00:00:00 2001 From: Roger Pau Monne Date: Tue, 4 Dec 2012 15:21:53 +0100 Subject: llist/xen-blkfront: implement safe version of llist_for_each_entry MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Implement a safe version of llist_for_each_entry, and use it in blkif_free. Previously grants where freed while iterating the list, which lead to dereferences when trying to fetch the next item. Reported-by: Dan Carpenter Signed-off-by: Roger Pau Monné Acked-by: Andrew Morton [v2: Move the llist_for_each_entry_safe in llist.h] Signed-off-by: Konrad Rzeszutek Wilk --- include/linux/llist.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'include/linux') diff --git a/include/linux/llist.h b/include/linux/llist.h index a5199f6d0e82..d0ab98f73d38 100644 --- a/include/linux/llist.h +++ b/include/linux/llist.h @@ -124,6 +124,31 @@ static inline void init_llist_head(struct llist_head *list) &(pos)->member != NULL; \ (pos) = llist_entry((pos)->member.next, typeof(*(pos)), member)) +/** + * llist_for_each_entry_safe - iterate safely against remove over some entries + * of lock-less list of given type. + * @pos: the type * to use as a loop cursor. + * @n: another type * to use as a temporary storage. + * @node: the fist entry of deleted list entries. + * @member: the name of the llist_node with the struct. + * + * In general, some entries of the lock-less list can be traversed + * safely only after being removed from list, so start with an entry + * instead of list head. This variant allows removal of entries + * as we iterate. + * + * If being used on entries deleted from lock-less list directly, the + * traverse order is from the newest to the oldest added entry. If + * you want to traverse from the oldest to the newest, you must + * reverse the order by yourself before traversing. + */ +#define llist_for_each_entry_safe(pos, n, node, member) \ + for ((pos) = llist_entry((node), typeof(*(pos)), member), \ + (n) = (pos)->member.next; \ + &(pos)->member != NULL; \ + (pos) = llist_entry(n, typeof(*(pos)), member), \ + (n) = (&(pos)->member != NULL) ? (pos)->member.next : NULL) + /** * llist_empty - tests whether a lock-less list is empty * @head: the list to test -- cgit v1.2.3 From afc59400d6c65bad66d4ad0b2daf879cbff8e23e Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Mon, 10 Dec 2012 18:01:37 -0500 Subject: nfsd4: cleanup: replace rq_resused count by rq_next_page pointer It may be a matter of personal taste, but I find this makes the code clearer. Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/svc.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index d83db800fe02..676ddf53b3ee 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -243,6 +243,7 @@ struct svc_rqst { struct page * rq_pages[RPCSVC_MAXPAGES]; struct page * *rq_respages; /* points into rq_pages */ int rq_resused; /* number of pages used for result */ + struct page * *rq_next_page; /* next reply page to use */ struct kvec rq_vec[RPCSVC_MAXPAGES]; /* generally useful.. */ @@ -338,9 +339,8 @@ xdr_ressize_check(struct svc_rqst *rqstp, __be32 *p) static inline void svc_free_res_pages(struct svc_rqst *rqstp) { - while (rqstp->rq_resused) { - struct page **pp = (rqstp->rq_respages + - --rqstp->rq_resused); + while (rqstp->rq_next_page != rqstp->rq_respages) { + struct page **pp = --rqstp->rq_next_page; if (*pp) { put_page(*pp); *pp = NULL; -- cgit v1.2.3 From 06ca287dbac9cc19d04ac2901b8c4882c03795ff Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Tue, 16 Oct 2012 23:56:14 +1030 Subject: virtio: move queue_index and num_free fields into core struct virtqueue. They're generic concepts, so hoist them. This also avoids accessor functions (though kept around for merge with DaveM's net tree). This goes even further than Jason Wang's 17bb6d4088 patch ("virtio-ring: move queue_index to vring_virtqueue") which moved the queue_index from the specific transport. Acked-by: Michael S. Tsirkin Signed-off-by: Rusty Russell --- include/linux/virtio.h | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/virtio.h b/include/linux/virtio.h index 533b1157f22e..4b8f17d90458 100644 --- a/include/linux/virtio.h +++ b/include/linux/virtio.h @@ -16,12 +16,20 @@ * @name: the name of this virtqueue (mainly for debugging) * @vdev: the virtio device this queue was created for. * @priv: a pointer for the virtqueue implementation to use. + * @index: the zero-based ordinal number for this queue. + * @num_free: number of elements we expect to be able to fit. + * + * A note on @num_free: with indirect buffers, each buffer needs one + * element in the queue, otherwise a buffer will need one element per + * sg element. */ struct virtqueue { struct list_head list; void (*callback)(struct virtqueue *vq); const char *name; struct virtio_device *vdev; + unsigned int index; + unsigned int num_free; void *priv; }; @@ -50,7 +58,11 @@ void *virtqueue_detach_unused_buf(struct virtqueue *vq); unsigned int virtqueue_get_vring_size(struct virtqueue *vq); -int virtqueue_get_queue_index(struct virtqueue *vq); +/* FIXME: Obsolete accessor, but required for virtio_net merge. */ +static inline unsigned int virtqueue_get_queue_index(struct virtqueue *vq) +{ + return vq->index; +} /** * virtio_device - representation of a device using virtio -- cgit v1.2.3 From 9bffdca8c64a72ac54c47a552734ab457bc720d4 Mon Sep 17 00:00:00 2001 From: Wanlong Gao Date: Tue, 11 Dec 2012 11:04:50 +1030 Subject: virtio: use dev_to_virtio wrapper in virtio Use dev_to_virtio wrapper in virtio to make code clearly. Cc: Rusty Russell Cc: "Michael S. Tsirkin" Signed-off-by: Wanlong Gao Signed-off-by: Rusty Russell --- include/linux/virtio.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/virtio.h b/include/linux/virtio.h index 4b8f17d90458..5f1f80c76468 100644 --- a/include/linux/virtio.h +++ b/include/linux/virtio.h @@ -85,7 +85,11 @@ struct virtio_device { void *priv; }; -#define dev_to_virtio(dev) container_of(dev, struct virtio_device, dev) +static inline struct virtio_device *dev_to_virtio(struct device *_dev) +{ + return container_of(_dev, struct virtio_device, dev); +} + int register_virtio_device(struct virtio_device *dev); void unregister_virtio_device(struct virtio_device *dev); -- cgit v1.2.3 From 9a2bdcc85d28506d4e5d4a9618fb133a3f40945d Mon Sep 17 00:00:00 2001 From: Wanlong Gao Date: Mon, 10 Dec 2012 16:38:33 +0800 Subject: virtio: add drv_to_virtio to make code clearly Add drv_to_virtio wrapper to get virtio_driver from device_driver. Cc: Rusty Russell Cc: "Michael S. Tsirkin" Signed-off-by: Wanlong Gao Signed-off-by: Rusty Russell --- include/linux/virtio.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/virtio.h b/include/linux/virtio.h index 5f1f80c76468..cf8adb1f5b2c 100644 --- a/include/linux/virtio.h +++ b/include/linux/virtio.h @@ -119,6 +119,11 @@ struct virtio_driver { #endif }; +static inline struct virtio_driver *drv_to_virtio(struct device_driver *drv) +{ + return container_of(drv, struct virtio_driver, driver); +} + int register_virtio_driver(struct virtio_driver *drv); void unregister_virtio_driver(struct virtio_driver *drv); #endif /* _LINUX_VIRTIO_H */ -- cgit v1.2.3 From 7a64bf05b2a6fe3703062d13d389e3eb904741c6 Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:21:51 -0800 Subject: mm: add a __GFP_KMEMCG flag This flag is used to indicate to the callees that this allocation is a kernel allocation in process context, and should be accounted to current's memcg. Signed-off-by: Glauber Costa Acked-by: Johannes Weiner Acked-by: Rik van Riel Acked-by: Mel Gorman Acked-by: Kamezawa Hiroyuki Acked-by: Michal Hocko Acked-by: Christoph Lameter Cc: Pekka Enberg Cc: Suleiman Souhlal Cc: Tejun Heo Cc: David Rientjes Cc: Frederic Weisbecker Cc: Greg Thelen Cc: JoonSoo Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/gfp.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/gfp.h b/include/linux/gfp.h index f74856e17e48..643c9a6f7f34 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -30,6 +30,7 @@ struct vm_area_struct; #define ___GFP_HARDWALL 0x20000u #define ___GFP_THISNODE 0x40000u #define ___GFP_RECLAIMABLE 0x80000u +#define ___GFP_KMEMCG 0x100000u #define ___GFP_NOTRACK 0x200000u #define ___GFP_NO_KSWAPD 0x400000u #define ___GFP_OTHER_NODE 0x800000u @@ -89,6 +90,7 @@ struct vm_area_struct; #define __GFP_NO_KSWAPD ((__force gfp_t)___GFP_NO_KSWAPD) #define __GFP_OTHER_NODE ((__force gfp_t)___GFP_OTHER_NODE) /* On behalf of other node */ +#define __GFP_KMEMCG ((__force gfp_t)___GFP_KMEMCG) /* Allocation comes from a memcg-accounted resource */ #define __GFP_WRITE ((__force gfp_t)___GFP_WRITE) /* Allocator intends to dirty page */ /* -- cgit v1.2.3 From 7ae1e1d0f8ac2927ed7e3ca6d15e42d485903459 Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:21:56 -0800 Subject: memcg: kmem controller infrastructure Introduce infrastructure for tracking kernel memory pages to a given memcg. This will happen whenever the caller includes the flag __GFP_KMEMCG flag, and the task belong to a memcg other than the root. In memcontrol.h those functions are wrapped in inline acessors. The idea is to later on, patch those with static branches, so we don't incur any overhead when no mem cgroups with limited kmem are being used. Users of this functionality shall interact with the memcg core code through the following functions: memcg_kmem_newpage_charge: will return true if the group can handle the allocation. At this point, struct page is not yet allocated. memcg_kmem_commit_charge: will either revert the charge, if struct page allocation failed, or embed memcg information into page_cgroup. memcg_kmem_uncharge_page: called at free time, will revert the charge. Signed-off-by: Glauber Costa Acked-by: Michal Hocko Acked-by: Kamezawa Hiroyuki Cc: Christoph Lameter Cc: Pekka Enberg Cc: Johannes Weiner Cc: Tejun Heo Cc: David Rientjes Cc: Frederic Weisbecker Cc: Greg Thelen Cc: JoonSoo Kim Cc: Mel Gorman Cc: Rik van Riel Cc: Suleiman Souhlal Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 110 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 110 insertions(+) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index e98a74c0c9c0..afa2ad40457e 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -21,6 +21,7 @@ #define _LINUX_MEMCONTROL_H #include #include +#include struct mem_cgroup; struct page_cgroup; @@ -414,5 +415,114 @@ static inline void sock_release_memcg(struct sock *sk) { } #endif /* CONFIG_INET && CONFIG_MEMCG_KMEM */ + +#ifdef CONFIG_MEMCG_KMEM +static inline bool memcg_kmem_enabled(void) +{ + return true; +} + +/* + * In general, we'll do everything in our power to not incur in any overhead + * for non-memcg users for the kmem functions. Not even a function call, if we + * can avoid it. + * + * Therefore, we'll inline all those functions so that in the best case, we'll + * see that kmemcg is off for everybody and proceed quickly. If it is on, + * we'll still do most of the flag checking inline. We check a lot of + * conditions, but because they are pretty simple, they are expected to be + * fast. + */ +bool __memcg_kmem_newpage_charge(gfp_t gfp, struct mem_cgroup **memcg, + int order); +void __memcg_kmem_commit_charge(struct page *page, + struct mem_cgroup *memcg, int order); +void __memcg_kmem_uncharge_pages(struct page *page, int order); + +/** + * memcg_kmem_newpage_charge: verify if a new kmem allocation is allowed. + * @gfp: the gfp allocation flags. + * @memcg: a pointer to the memcg this was charged against. + * @order: allocation order. + * + * returns true if the memcg where the current task belongs can hold this + * allocation. + * + * We return true automatically if this allocation is not to be accounted to + * any memcg. + */ +static inline bool +memcg_kmem_newpage_charge(gfp_t gfp, struct mem_cgroup **memcg, int order) +{ + if (!memcg_kmem_enabled()) + return true; + + /* + * __GFP_NOFAIL allocations will move on even if charging is not + * possible. Therefore we don't even try, and have this allocation + * unaccounted. We could in theory charge it with + * res_counter_charge_nofail, but we hope those allocations are rare, + * and won't be worth the trouble. + */ + if (!(gfp & __GFP_KMEMCG) || (gfp & __GFP_NOFAIL)) + return true; + if (in_interrupt() || (!current->mm) || (current->flags & PF_KTHREAD)) + return true; + + /* If the test is dying, just let it go. */ + if (unlikely(fatal_signal_pending(current))) + return true; + + return __memcg_kmem_newpage_charge(gfp, memcg, order); +} + +/** + * memcg_kmem_uncharge_pages: uncharge pages from memcg + * @page: pointer to struct page being freed + * @order: allocation order. + * + * there is no need to specify memcg here, since it is embedded in page_cgroup + */ +static inline void +memcg_kmem_uncharge_pages(struct page *page, int order) +{ + if (memcg_kmem_enabled()) + __memcg_kmem_uncharge_pages(page, order); +} + +/** + * memcg_kmem_commit_charge: embeds correct memcg in a page + * @page: pointer to struct page recently allocated + * @memcg: the memcg structure we charged against + * @order: allocation order. + * + * Needs to be called after memcg_kmem_newpage_charge, regardless of success or + * failure of the allocation. if @page is NULL, this function will revert the + * charges. Otherwise, it will commit the memcg given by @memcg to the + * corresponding page_cgroup. + */ +static inline void +memcg_kmem_commit_charge(struct page *page, struct mem_cgroup *memcg, int order) +{ + if (memcg_kmem_enabled() && memcg) + __memcg_kmem_commit_charge(page, memcg, order); +} + +#else +static inline bool +memcg_kmem_newpage_charge(gfp_t gfp, struct mem_cgroup **memcg, int order) +{ + return true; +} + +static inline void memcg_kmem_uncharge_pages(struct page *page, int order) +{ +} + +static inline void +memcg_kmem_commit_charge(struct page *page, struct mem_cgroup *memcg, int order) +{ +} +#endif /* CONFIG_MEMCG_KMEM */ #endif /* _LINUX_MEMCONTROL_H */ -- cgit v1.2.3 From 6a1a0d3b625a4091e7a0eb249aefc6a644385149 Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:22:00 -0800 Subject: mm: allocate kernel pages to the right memcg When a process tries to allocate a page with the __GFP_KMEMCG flag, the page allocator will call the corresponding memcg functions to validate the allocation. Tasks in the root memcg can always proceed. To avoid adding markers to the page - and a kmem flag that would necessarily follow, as much as doing page_cgroup lookups for no reason, whoever is marking its allocations with __GFP_KMEMCG flag is responsible for telling the page allocator that this is such an allocation at free_pages() time. This is done by the invocation of __free_accounted_pages() and free_accounted_pages(). Signed-off-by: Glauber Costa Acked-by: Michal Hocko Acked-by: Mel Gorman Acked-by: Kamezawa Hiroyuki Acked-by: David Rientjes Cc: Christoph Lameter Cc: Pekka Enberg Cc: Johannes Weiner Cc: Suleiman Souhlal Cc: Tejun Heo Cc: Frederic Weisbecker Cc: Greg Thelen Cc: JoonSoo Kim Cc: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/gfp.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 643c9a6f7f34..0f615eb23d05 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -367,6 +367,9 @@ extern void free_pages(unsigned long addr, unsigned int order); extern void free_hot_cold_page(struct page *page, int cold); extern void free_hot_cold_page_list(struct list_head *list, int cold); +extern void __free_memcg_kmem_pages(struct page *page, unsigned int order); +extern void free_memcg_kmem_pages(unsigned long addr, unsigned int order); + #define __free_page(page) __free_pages((page), 0) #define free_page(addr) free_pages((addr), 0) -- cgit v1.2.3 From 50bdd430c20566b13d8bc59946184b08f5875de6 Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:22:04 -0800 Subject: res_counter: return amount of charges after res_counter_uncharge() It is useful to know how many charges are still left after a call to res_counter_uncharge. While it is possible to issue a res_counter_read after uncharge, this can be racy. If we need, for instance, to take some action when the counters drop down to 0, only one of the callers should see it. This is the same semantics as the atomic variables in the kernel. Since the current return value is void, we don't need to worry about anything breaking due to this change: nobody relied on that, and only users appearing from now on will be checking this value. Signed-off-by: Glauber Costa Reviewed-by: Michal Hocko Acked-by: Kamezawa Hiroyuki Acked-by: David Rientjes Cc: Johannes Weiner Cc: Suleiman Souhlal Cc: Tejun Heo Cc: Christoph Lameter Cc: Frederic Weisbecker Cc: Greg Thelen Cc: JoonSoo Kim Cc: Mel Gorman Cc: Pekka Enberg Cc: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/res_counter.h | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/res_counter.h b/include/linux/res_counter.h index 6f54e40fa218..5ae8456d9670 100644 --- a/include/linux/res_counter.h +++ b/include/linux/res_counter.h @@ -125,14 +125,16 @@ int res_counter_charge_nofail(struct res_counter *counter, * * these calls check for usage underflow and show a warning on the console * _locked call expects the counter->lock to be taken + * + * returns the total charges still present in @counter. */ -void res_counter_uncharge_locked(struct res_counter *counter, unsigned long val); -void res_counter_uncharge(struct res_counter *counter, unsigned long val); +u64 res_counter_uncharge_locked(struct res_counter *counter, unsigned long val); +u64 res_counter_uncharge(struct res_counter *counter, unsigned long val); -void res_counter_uncharge_until(struct res_counter *counter, - struct res_counter *top, - unsigned long val); +u64 res_counter_uncharge_until(struct res_counter *counter, + struct res_counter *top, + unsigned long val); /** * res_counter_margin - calculate chargeable space of a counter * @cnt: the counter -- cgit v1.2.3 From a8964b9b84f99c0b1b5d7c09520f89f0700e742e Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:22:09 -0800 Subject: memcg: use static branches when code not in use We can use static branches to patch the code in or out when not used. Because the _ACTIVE bit on kmem_accounted is only set after the increment is done, we guarantee that the root memcg will always be selected for kmem charges until all call sites are patched (see memcg_kmem_enabled). This guarantees that no mischarges are applied. Static branch decrement happens when the last reference count from the kmem accounting in memcg dies. This will only happen when the charges drop down to 0. When that happens, we need to disable the static branch only on those memcgs that enabled it. To achieve this, we would be forced to complicate the code by keeping track of which memcgs were the ones that actually enabled limits, and which ones got it from its parents. It is a lot simpler just to do static_key_slow_inc() on every child that is accounted. Signed-off-by: Glauber Costa Acked-by: Michal Hocko Acked-by: Kamezawa Hiroyuki Cc: Christoph Lameter Cc: Pekka Enberg Cc: Johannes Weiner Cc: Suleiman Souhlal Cc: Tejun Heo Cc: David Rientjes Cc: Frederic Weisbecker Cc: Greg Thelen Cc: JoonSoo Kim Cc: Mel Gorman Cc: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index afa2ad40457e..87d61e840ddd 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -22,6 +22,7 @@ #include #include #include +#include struct mem_cgroup; struct page_cgroup; @@ -417,9 +418,10 @@ static inline void sock_release_memcg(struct sock *sk) #endif /* CONFIG_INET && CONFIG_MEMCG_KMEM */ #ifdef CONFIG_MEMCG_KMEM +extern struct static_key memcg_kmem_enabled_key; static inline bool memcg_kmem_enabled(void) { - return true; + return static_key_false(&memcg_kmem_enabled_key); } /* -- cgit v1.2.3 From 2ad306b17c0ac5a1b1f250d5f772aeb87fdf1eba Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:22:18 -0800 Subject: fork: protect architectures where THREAD_SIZE >= PAGE_SIZE against fork bombs Because those architectures will draw their stacks directly from the page allocator, rather than the slab cache, we can directly pass __GFP_KMEMCG flag, and issue the corresponding free_pages. This code path is taken when the architecture doesn't define CONFIG_ARCH_THREAD_INFO_ALLOCATOR (only ia64 seems to), and has THREAD_SIZE >= PAGE_SIZE. Luckily, most - if not all - of the remaining architectures fall in this category. This will guarantee that every stack page is accounted to the memcg the process currently lives on, and will have the allocations to fail if they go over limit. For the time being, I am defining a new variant of THREADINFO_GFP, not to mess with the other path. Once the slab is also tracked by memcg, we can get rid of that flag. Tested to successfully protect against :(){ :|:& };: Signed-off-by: Glauber Costa Acked-by: Frederic Weisbecker Acked-by: Kamezawa Hiroyuki Reviewed-by: Michal Hocko Cc: Christoph Lameter Cc: David Rientjes Cc: Greg Thelen Cc: Johannes Weiner Cc: JoonSoo Kim Cc: Mel Gorman Cc: Pekka Enberg Cc: Rik van Riel Cc: Suleiman Souhlal Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/thread_info.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h index ccc1899bd62e..e7e04736802f 100644 --- a/include/linux/thread_info.h +++ b/include/linux/thread_info.h @@ -61,6 +61,8 @@ extern long do_no_restart_syscall(struct restart_block *parm); # define THREADINFO_GFP (GFP_KERNEL | __GFP_NOTRACK) #endif +#define THREADINFO_GFP_ACCOUNTED (THREADINFO_GFP | __GFP_KMEMCG) + /* * flag set/clear/test wrappers * - pass TIF_xxxx constants to these functions -- cgit v1.2.3 From ba6c496ed834a37a26fc6fc87fc9aecb0fa0014d Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:22:27 -0800 Subject: slab/slub: struct memcg_params For the kmem slab controller, we need to record some extra information in the kmem_cache structure. Signed-off-by: Glauber Costa Signed-off-by: Suleiman Souhlal Cc: Christoph Lameter Cc: David Rientjes Cc: Frederic Weisbecker Cc: Greg Thelen Cc: Johannes Weiner Cc: JoonSoo Kim Cc: KAMEZAWA Hiroyuki Cc: Mel Gorman Cc: Michal Hocko Cc: Pekka Enberg Cc: Rik van Riel Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/slab.h | 24 ++++++++++++++++++++++++ include/linux/slab_def.h | 3 +++ include/linux/slub_def.h | 3 +++ 3 files changed, 30 insertions(+) (limited to 'include/linux') diff --git a/include/linux/slab.h b/include/linux/slab.h index 743a10415122..00efba149222 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -176,6 +176,30 @@ void kmem_cache_free(struct kmem_cache *, void *); #define ARCH_SLAB_MINALIGN __alignof__(unsigned long long) #endif +/* + * This is the main placeholder for memcg-related information in kmem caches. + * struct kmem_cache will hold a pointer to it, so the memory cost while + * disabled is 1 pointer. The runtime cost while enabled, gets bigger than it + * would otherwise be if that would be bundled in kmem_cache: we'll need an + * extra pointer chase. But the trade off clearly lays in favor of not + * penalizing non-users. + * + * Both the root cache and the child caches will have it. For the root cache, + * this will hold a dynamically allocated array large enough to hold + * information about the currently limited memcgs in the system. + * + * Child caches will hold extra metadata needed for its operation. Fields are: + * + * @memcg: pointer to the memcg this cache belongs to + */ +struct memcg_cache_params { + bool is_root_cache; + union { + struct kmem_cache *memcg_caches[0]; + struct mem_cgroup *memcg; + }; +}; + /* * Common kmalloc functions provided by all allocators */ diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h index 45c0356fdc8c..8bb6e0eaf3c6 100644 --- a/include/linux/slab_def.h +++ b/include/linux/slab_def.h @@ -81,6 +81,9 @@ struct kmem_cache { */ int obj_offset; #endif /* CONFIG_DEBUG_SLAB */ +#ifdef CONFIG_MEMCG_KMEM + struct memcg_cache_params *memcg_params; +#endif /* 6) per-cpu/per-node data, touched during every alloc/free */ /* diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index df448adb7283..961e72eab907 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -101,6 +101,9 @@ struct kmem_cache { #ifdef CONFIG_SYSFS struct kobject kobj; /* For sysfs */ #endif +#ifdef CONFIG_MEMCG_KMEM + struct memcg_cache_params *memcg_params; +#endif #ifdef CONFIG_NUMA /* -- cgit v1.2.3 From 2633d7a028239a738b793be5ca8fa6ac312f5793 Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:22:34 -0800 Subject: slab/slub: consider a memcg parameter in kmem_create_cache Allow a memcg parameter to be passed during cache creation. When the slub allocator is being used, it will only merge caches that belong to the same memcg. We'll do this by scanning the global list, and then translating the cache to a memcg-specific cache Default function is created as a wrapper, passing NULL to the memcg version. We only merge caches that belong to the same memcg. A helper is provided, memcg_css_id: because slub needs a unique cache name for sysfs. Since this is visible, but not the canonical location for slab data, the cache name is not used, the css_id should suffice. Signed-off-by: Glauber Costa Cc: Christoph Lameter Cc: David Rientjes Cc: Frederic Weisbecker Cc: Greg Thelen Cc: Johannes Weiner Cc: JoonSoo Kim Cc: KAMEZAWA Hiroyuki Cc: Mel Gorman Cc: Michal Hocko Cc: Pekka Enberg Cc: Rik van Riel Cc: Suleiman Souhlal Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 26 ++++++++++++++++++++++++++ include/linux/slab.h | 14 +++++++++++++- 2 files changed, 39 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 87d61e840ddd..0b69a0470007 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -28,6 +28,7 @@ struct mem_cgroup; struct page_cgroup; struct page; struct mm_struct; +struct kmem_cache; /* Stats that can be updated by kernel. */ enum mem_cgroup_page_stat_item { @@ -441,6 +442,11 @@ void __memcg_kmem_commit_charge(struct page *page, struct mem_cgroup *memcg, int order); void __memcg_kmem_uncharge_pages(struct page *page, int order); +int memcg_cache_id(struct mem_cgroup *memcg); +int memcg_register_cache(struct mem_cgroup *memcg, struct kmem_cache *s); +void memcg_release_cache(struct kmem_cache *cachep); +void memcg_cache_list_add(struct mem_cgroup *memcg, struct kmem_cache *cachep); + /** * memcg_kmem_newpage_charge: verify if a new kmem allocation is allowed. * @gfp: the gfp allocation flags. @@ -525,6 +531,26 @@ static inline void memcg_kmem_commit_charge(struct page *page, struct mem_cgroup *memcg, int order) { } + +static inline int memcg_cache_id(struct mem_cgroup *memcg) +{ + return -1; +} + +static inline int memcg_register_cache(struct mem_cgroup *memcg, + struct kmem_cache *s) +{ + return 0; +} + +static inline void memcg_release_cache(struct kmem_cache *cachep) +{ +} + +static inline void memcg_cache_list_add(struct mem_cgroup *memcg, + struct kmem_cache *s) +{ +} #endif /* CONFIG_MEMCG_KMEM */ #endif /* _LINUX_MEMCONTROL_H */ diff --git a/include/linux/slab.h b/include/linux/slab.h index 00efba149222..c0fcf28c15b2 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -116,6 +116,7 @@ struct kmem_cache { }; #endif +struct mem_cgroup; /* * struct kmem_cache related prototypes */ @@ -125,6 +126,9 @@ int slab_is_available(void); struct kmem_cache *kmem_cache_create(const char *, size_t, size_t, unsigned long, void (*)(void *)); +struct kmem_cache * +kmem_cache_create_memcg(struct mem_cgroup *, const char *, size_t, size_t, + unsigned long, void (*)(void *)); void kmem_cache_destroy(struct kmem_cache *); int kmem_cache_shrink(struct kmem_cache *); void kmem_cache_free(struct kmem_cache *, void *); @@ -191,15 +195,23 @@ void kmem_cache_free(struct kmem_cache *, void *); * Child caches will hold extra metadata needed for its operation. Fields are: * * @memcg: pointer to the memcg this cache belongs to + * @list: list_head for the list of all caches in this memcg + * @root_cache: pointer to the global, root cache, this cache was derived from */ struct memcg_cache_params { bool is_root_cache; union { struct kmem_cache *memcg_caches[0]; - struct mem_cgroup *memcg; + struct { + struct mem_cgroup *memcg; + struct list_head list; + struct kmem_cache *root_cache; + }; }; }; +int memcg_update_all_caches(int num_memcgs); + /* * Common kmalloc functions provided by all allocators */ -- cgit v1.2.3 From 55007d849759252ddd573aeb36143b947202d509 Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:22:38 -0800 Subject: memcg: allocate memory for memcg caches whenever a new memcg appears Every cache that is considered a root cache (basically the "original" caches, tied to the root memcg/no-memcg) will have an array that should be large enough to store a cache pointer per each memcg in the system. Theoreticaly, this is as high as 1 << sizeof(css_id), which is currently in the 64k pointers range. Most of the time, we won't be using that much. What goes in this patch, is a simple scheme to dynamically allocate such an array, in order to minimize memory usage for memcg caches. Because we would also like to avoid allocations all the time, at least for now, the array will only grow. It will tend to be big enough to hold the maximum number of kmem-limited memcgs ever achieved. We'll allocate it to be a minimum of 64 kmem-limited memcgs. When we have more than that, we'll start doubling the size of this array every time the limit is reached. Because we are only considering kmem limited memcgs, a natural point for this to happen is when we write to the limit. At that point, we already have set_limit_mutex held, so that will become our natural synchronization mechanism. Signed-off-by: Glauber Costa Cc: Christoph Lameter Cc: David Rientjes Cc: Frederic Weisbecker Cc: Greg Thelen Cc: Johannes Weiner Cc: JoonSoo Kim Cc: KAMEZAWA Hiroyuki Cc: Mel Gorman Cc: Michal Hocko Cc: Pekka Enberg Cc: Rik van Riel Cc: Suleiman Souhlal Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 0b69a0470007..45085e14e023 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -447,6 +447,8 @@ int memcg_register_cache(struct mem_cgroup *memcg, struct kmem_cache *s); void memcg_release_cache(struct kmem_cache *cachep); void memcg_cache_list_add(struct mem_cgroup *memcg, struct kmem_cache *cachep); +int memcg_update_cache_size(struct kmem_cache *s, int num_groups); +void memcg_update_array_size(int num_groups); /** * memcg_kmem_newpage_charge: verify if a new kmem allocation is allowed. * @gfp: the gfp allocation flags. -- cgit v1.2.3 From d7f25f8a2f81252d1ac134470ba1d0a287cf8fcd Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:22:40 -0800 Subject: memcg: infrastructure to match an allocation to the right cache The page allocator is able to bind a page to a memcg when it is allocated. But for the caches, we'd like to have as many objects as possible in a page belonging to the same cache. This is done in this patch by calling memcg_kmem_get_cache in the beginning of every allocation function. This function is patched out by static branches when kernel memory controller is not being used. It assumes that the task allocating, which determines the memcg in the page allocator, belongs to the same cgroup throughout the whole process. Misaccounting can happen if the task calls memcg_kmem_get_cache() while belonging to a cgroup, and later on changes. This is considered acceptable, and should only happen upon task migration. Before the cache is created by the memcg core, there is also a possible imbalance: the task belongs to a memcg, but the cache being allocated from is the global cache, since the child cache is not yet guaranteed to be ready. This case is also fine, since in this case the GFP_KMEMCG will not be passed and the page allocator will not attempt any cgroup accounting. Signed-off-by: Glauber Costa Cc: Christoph Lameter Cc: David Rientjes Cc: Frederic Weisbecker Cc: Greg Thelen Cc: Johannes Weiner Cc: JoonSoo Kim Cc: KAMEZAWA Hiroyuki Cc: Mel Gorman Cc: Michal Hocko Cc: Pekka Enberg Cc: Rik van Riel Cc: Suleiman Souhlal Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 45085e14e023..bd9b5d73bc2b 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -449,6 +449,10 @@ void memcg_cache_list_add(struct mem_cgroup *memcg, struct kmem_cache *cachep); int memcg_update_cache_size(struct kmem_cache *s, int num_groups); void memcg_update_array_size(int num_groups); + +struct kmem_cache * +__memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp); + /** * memcg_kmem_newpage_charge: verify if a new kmem allocation is allowed. * @gfp: the gfp allocation flags. @@ -518,6 +522,37 @@ memcg_kmem_commit_charge(struct page *page, struct mem_cgroup *memcg, int order) __memcg_kmem_commit_charge(page, memcg, order); } +/** + * memcg_kmem_get_cache: selects the correct per-memcg cache for allocation + * @cachep: the original global kmem cache + * @gfp: allocation flags. + * + * This function assumes that the task allocating, which determines the memcg + * in the page allocator, belongs to the same cgroup throughout the whole + * process. Misacounting can happen if the task calls memcg_kmem_get_cache() + * while belonging to a cgroup, and later on changes. This is considered + * acceptable, and should only happen upon task migration. + * + * Before the cache is created by the memcg core, there is also a possible + * imbalance: the task belongs to a memcg, but the cache being allocated from + * is the global cache, since the child cache is not yet guaranteed to be + * ready. This case is also fine, since in this case the GFP_KMEMCG will not be + * passed and the page allocator will not attempt any cgroup accounting. + */ +static __always_inline struct kmem_cache * +memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp) +{ + if (!memcg_kmem_enabled()) + return cachep; + if (gfp & __GFP_NOFAIL) + return cachep; + if (in_interrupt() || (!current->mm) || (current->flags & PF_KTHREAD)) + return cachep; + if (unlikely(fatal_signal_pending(current))) + return cachep; + + return __memcg_kmem_get_cache(cachep, gfp); +} #else static inline bool memcg_kmem_newpage_charge(gfp_t gfp, struct mem_cgroup **memcg, int order) @@ -553,6 +588,12 @@ static inline void memcg_cache_list_add(struct mem_cgroup *memcg, struct kmem_cache *s) { } + +static inline struct kmem_cache * +memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp) +{ + return cachep; +} #endif /* CONFIG_MEMCG_KMEM */ #endif /* _LINUX_MEMCONTROL_H */ -- cgit v1.2.3 From 0e9d92f2d02d8c8320f0502307c688d07bdac2b3 Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:22:42 -0800 Subject: memcg: skip memcg kmem allocations in specified code regions Create a mechanism that skip memcg allocations during certain pieces of our core code. It basically works in the same way as preempt_disable()/preempt_enable(): By marking a region under which all allocations will be accounted to the root memcg. We need this to prevent races in early cache creation, when we allocate data using caches that are not necessarily created already. Signed-off-by: Glauber Costa yCc: Christoph Lameter Cc: David Rientjes Cc: Frederic Weisbecker Cc: Greg Thelen Cc: Johannes Weiner Cc: JoonSoo Kim Cc: KAMEZAWA Hiroyuki Cc: Mel Gorman Cc: Michal Hocko Cc: Pekka Enberg Cc: Rik van Riel Cc: Suleiman Souhlal Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sched.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 9914c662ed7b..f712465b05c5 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1597,6 +1597,7 @@ struct task_struct { unsigned long nr_pages; /* uncharged usage */ unsigned long memsw_nr_pages; /* uncharged mem+swap usage */ } memcg_batch; + unsigned int memcg_kmem_skip_account; #endif #ifdef CONFIG_HAVE_HW_BREAKPOINT atomic_t ptrace_bp_refcnt; -- cgit v1.2.3 From b9ce5ef49f00daf2254c6953c8d31f79aabccd34 Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:22:46 -0800 Subject: sl[au]b: always get the cache from its page in kmem_cache_free() struct page already has this information. If we start chaining caches, this information will always be more trustworthy than whatever is passed into the function. Signed-off-by: Glauber Costa Cc: Christoph Lameter Cc: David Rientjes Cc: Frederic Weisbecker Cc: Greg Thelen Cc: Johannes Weiner Cc: JoonSoo Kim Cc: KAMEZAWA Hiroyuki Cc: Mel Gorman Cc: Michal Hocko Cc: Pekka Enberg Cc: Rik van Riel Cc: Suleiman Souhlal Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index bd9b5d73bc2b..2298122e71ad 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -554,6 +554,11 @@ memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp) return __memcg_kmem_get_cache(cachep, gfp); } #else +static inline bool memcg_kmem_enabled(void) +{ + return false; +} + static inline bool memcg_kmem_newpage_charge(gfp_t gfp, struct mem_cgroup **memcg, int order) { -- cgit v1.2.3 From d79923fad95b0cdf7770e024677180c734cb7148 Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:22:48 -0800 Subject: sl[au]b: allocate objects from memcg cache We are able to match a cache allocation to a particular memcg. If the task doesn't change groups during the allocation itself - a rare event, this will give us a good picture about who is the first group to touch a cache page. This patch uses the now available infrastructure by calling memcg_kmem_get_cache() before all the cache allocations. Signed-off-by: Glauber Costa Cc: Christoph Lameter Cc: David Rientjes Cc: Frederic Weisbecker Cc: Greg Thelen Cc: Johannes Weiner Cc: JoonSoo Kim Cc: KAMEZAWA Hiroyuki Cc: Mel Gorman Cc: Michal Hocko Cc: Pekka Enberg Cc: Rik van Riel Cc: Suleiman Souhlal Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/slub_def.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index 961e72eab907..364ba6c9fe21 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -225,7 +225,10 @@ void *__kmalloc(size_t size, gfp_t flags); static __always_inline void * kmalloc_order(size_t size, gfp_t flags, unsigned int order) { - void *ret = (void *) __get_free_pages(flags | __GFP_COMP, order); + void *ret; + + flags |= (__GFP_COMP | __GFP_KMEMCG); + ret = (void *) __get_free_pages(flags, order); kmemleak_alloc(ret, size, 1, flags); return ret; } -- cgit v1.2.3 From 1f458cbf122288b23620ee822e19bcbb76c8d6ec Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:22:50 -0800 Subject: memcg: destroy memcg caches Implement destruction of memcg caches. Right now, only caches where our reference counter is the last remaining are deleted. If there are any other reference counters around, we just leave the caches lying around until they go away. When that happens, a destruction function is called from the cache code. Caches are only destroyed in process context, so we queue them up for later processing in the general case. Signed-off-by: Glauber Costa Cc: Christoph Lameter Cc: David Rientjes Cc: Frederic Weisbecker Cc: Greg Thelen Cc: Johannes Weiner Cc: JoonSoo Kim Cc: KAMEZAWA Hiroyuki Cc: Mel Gorman Cc: Michal Hocko Cc: Pekka Enberg Cc: Rik van Riel Cc: Suleiman Souhlal Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 2 ++ include/linux/slab.h | 10 +++++++++- 2 files changed, 11 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 2298122e71ad..79fcf0cd7186 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -453,6 +453,8 @@ void memcg_update_array_size(int num_groups); struct kmem_cache * __memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp); +void mem_cgroup_destroy_cache(struct kmem_cache *cachep); + /** * memcg_kmem_newpage_charge: verify if a new kmem allocation is allowed. * @gfp: the gfp allocation flags. diff --git a/include/linux/slab.h b/include/linux/slab.h index c0fcf28c15b2..869efb8d2377 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -11,6 +11,8 @@ #include #include +#include + /* * Flags to pass to kmem_cache_create(). @@ -179,7 +181,6 @@ void kmem_cache_free(struct kmem_cache *, void *); #ifndef ARCH_SLAB_MINALIGN #define ARCH_SLAB_MINALIGN __alignof__(unsigned long long) #endif - /* * This is the main placeholder for memcg-related information in kmem caches. * struct kmem_cache will hold a pointer to it, so the memory cost while @@ -197,6 +198,10 @@ void kmem_cache_free(struct kmem_cache *, void *); * @memcg: pointer to the memcg this cache belongs to * @list: list_head for the list of all caches in this memcg * @root_cache: pointer to the global, root cache, this cache was derived from + * @dead: set to true after the memcg dies; the cache may still be around. + * @nr_pages: number of pages that belongs to this cache. + * @destroy: worker to be called whenever we are ready, or believe we may be + * ready, to destroy this cache. */ struct memcg_cache_params { bool is_root_cache; @@ -206,6 +211,9 @@ struct memcg_cache_params { struct mem_cgroup *memcg; struct list_head list; struct kmem_cache *root_cache; + bool dead; + atomic_t nr_pages; + struct work_struct destroy; }; }; }; -- cgit v1.2.3 From 7cf2798240a2a2230cb16a391beef98d8a7ad362 Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:22:55 -0800 Subject: memcg/sl[au]b: track all the memcg children of a kmem_cache This enables us to remove all the children of a kmem_cache being destroyed, if for example the kernel module it's being used in gets unloaded. Otherwise, the children will still point to the destroyed parent. Signed-off-by: Suleiman Souhlal Signed-off-by: Glauber Costa Cc: Christoph Lameter Cc: David Rientjes Cc: Frederic Weisbecker Cc: Greg Thelen Cc: Johannes Weiner Cc: JoonSoo Kim Cc: KAMEZAWA Hiroyuki Cc: Mel Gorman Cc: Michal Hocko Cc: Pekka Enberg Cc: Rik van Riel Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 79fcf0cd7186..e119f3ef793c 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -454,6 +454,7 @@ struct kmem_cache * __memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp); void mem_cgroup_destroy_cache(struct kmem_cache *cachep); +void kmem_cache_destroy_memcg_children(struct kmem_cache *s); /** * memcg_kmem_newpage_charge: verify if a new kmem allocation is allowed. @@ -601,6 +602,10 @@ memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp) { return cachep; } + +static inline void kmem_cache_destroy_memcg_children(struct kmem_cache *s) +{ +} #endif /* CONFIG_MEMCG_KMEM */ #endif /* _LINUX_MEMCONTROL_H */ -- cgit v1.2.3 From 749c54151a6e5b229e4ae067dbc651e54b161fbc Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:23:01 -0800 Subject: memcg: aggregate memcg cache values in slabinfo When we create caches in memcgs, we need to display their usage information somewhere. We'll adopt a scheme similar to /proc/meminfo, with aggregate totals shown in the global file, and per-group information stored in the group itself. For the time being, only reads are allowed in the per-group cache. Signed-off-by: Glauber Costa Cc: Christoph Lameter Cc: David Rientjes Cc: Frederic Weisbecker Cc: Greg Thelen Cc: Johannes Weiner Cc: JoonSoo Kim Cc: KAMEZAWA Hiroyuki Cc: Mel Gorman Cc: Michal Hocko Cc: Pekka Enberg Cc: Rik van Riel Cc: Suleiman Souhlal Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 8 ++++++++ include/linux/slab.h | 4 ++++ 2 files changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index e119f3ef793c..8dc7c746b44f 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -420,6 +420,11 @@ static inline void sock_release_memcg(struct sock *sk) #ifdef CONFIG_MEMCG_KMEM extern struct static_key memcg_kmem_enabled_key; + +extern int memcg_limited_groups_array_size; +#define for_each_memcg_cache_index(_idx) \ + for ((_idx) = 0; i < memcg_limited_groups_array_size; (_idx)++) + static inline bool memcg_kmem_enabled(void) { return static_key_false(&memcg_kmem_enabled_key); @@ -557,6 +562,9 @@ memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp) return __memcg_kmem_get_cache(cachep, gfp); } #else +#define for_each_memcg_cache_index(_idx) \ + for (; NULL; ) + static inline bool memcg_kmem_enabled(void) { return false; diff --git a/include/linux/slab.h b/include/linux/slab.h index 869efb8d2377..b9278663f22a 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -220,6 +220,10 @@ struct memcg_cache_params { int memcg_update_all_caches(int num_memcgs); +struct seq_file; +int cache_show(struct kmem_cache *s, struct seq_file *m); +void print_slabinfo_header(struct seq_file *m); + /* * Common kmalloc functions provided by all allocators */ -- cgit v1.2.3 From 943a451a87d229ca564a27274b58eaeae35fde5d Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:23:03 -0800 Subject: slab: propagate tunable values SLAB allows us to tune a particular cache behavior with tunables. When creating a new memcg cache copy, we'd like to preserve any tunables the parent cache already had. This could be done by an explicit call to do_tune_cpucache() after the cache is created. But this is not very convenient now that the caches are created from common code, since this function is SLAB-specific. Another method of doing that is taking advantage of the fact that do_tune_cpucache() is always called from enable_cpucache(), which is called at cache initialization. We can just preset the values, and then things work as expected. It can also happen that a root cache has its tunables updated during normal system operation. In this case, we will propagate the change to all caches that are already active. This change will require us to move the assignment of root_cache in memcg_params a bit earlier. We need this to be already set - which memcg_kmem_register_cache will do - when we reach __kmem_cache_create() Signed-off-by: Glauber Costa Cc: Christoph Lameter Cc: David Rientjes Cc: Frederic Weisbecker Cc: Greg Thelen Cc: Johannes Weiner Cc: JoonSoo Kim Cc: KAMEZAWA Hiroyuki Cc: Mel Gorman Cc: Michal Hocko Cc: Pekka Enberg Cc: Rik van Riel Cc: Suleiman Souhlal Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 8 +++++--- include/linux/slab.h | 2 +- 2 files changed, 6 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 8dc7c746b44f..ea02ff970836 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -448,7 +448,8 @@ void __memcg_kmem_commit_charge(struct page *page, void __memcg_kmem_uncharge_pages(struct page *page, int order); int memcg_cache_id(struct mem_cgroup *memcg); -int memcg_register_cache(struct mem_cgroup *memcg, struct kmem_cache *s); +int memcg_register_cache(struct mem_cgroup *memcg, struct kmem_cache *s, + struct kmem_cache *root_cache); void memcg_release_cache(struct kmem_cache *cachep); void memcg_cache_list_add(struct mem_cgroup *memcg, struct kmem_cache *cachep); @@ -590,8 +591,9 @@ static inline int memcg_cache_id(struct mem_cgroup *memcg) return -1; } -static inline int memcg_register_cache(struct mem_cgroup *memcg, - struct kmem_cache *s) +static inline int +memcg_register_cache(struct mem_cgroup *memcg, struct kmem_cache *s, + struct kmem_cache *root_cache) { return 0; } diff --git a/include/linux/slab.h b/include/linux/slab.h index b9278663f22a..5d168d7e0a28 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -130,7 +130,7 @@ struct kmem_cache *kmem_cache_create(const char *, size_t, size_t, void (*)(void *)); struct kmem_cache * kmem_cache_create_memcg(struct mem_cgroup *, const char *, size_t, size_t, - unsigned long, void (*)(void *)); + unsigned long, void (*)(void *), struct kmem_cache *); void kmem_cache_destroy(struct kmem_cache *); int kmem_cache_shrink(struct kmem_cache *); void kmem_cache_free(struct kmem_cache *, void *); -- cgit v1.2.3 From 107dab5c92d5f9c3afe962036e47c207363255c7 Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:23:05 -0800 Subject: slub: slub-specific propagation changes SLUB allows us to tune a particular cache behavior with sysfs-based tunables. When creating a new memcg cache copy, we'd like to preserve any tunables the parent cache already had. This can be done by tapping into the store attribute function provided by the allocator. We of course don't need to mess with read-only fields. Since the attributes can have multiple types and are stored internally by sysfs, the best strategy is to issue a ->show() in the root cache, and then ->store() in the memcg cache. The drawback of that, is that sysfs can allocate up to a page in buffering for show(), that we are likely not to need, but also can't guarantee. To avoid always allocating a page for that, we can update the caches at store time with the maximum attribute size ever stored to the root cache. We will then get a buffer big enough to hold it. The corolary to this, is that if no stores happened, nothing will be propagated. It can also happen that a root cache has its tunables updated during normal system operation. In this case, we will propagate the change to all caches that are already active. [akpm@linux-foundation.org: tweak code to avoid __maybe_unused] Signed-off-by: Glauber Costa Cc: Christoph Lameter Cc: David Rientjes Cc: Frederic Weisbecker Cc: Greg Thelen Cc: Johannes Weiner Cc: JoonSoo Kim Cc: KAMEZAWA Hiroyuki Cc: Mel Gorman Cc: Michal Hocko Cc: Pekka Enberg Cc: Rik van Riel Cc: Suleiman Souhlal Cc: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/slub_def.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index 364ba6c9fe21..9db4825cd393 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -103,6 +103,7 @@ struct kmem_cache { #endif #ifdef CONFIG_MEMCG_KMEM struct memcg_cache_params *memcg_params; + int max_attr_size; /* for propagation, maximum size of a stored attr */ #endif #ifdef CONFIG_NUMA -- cgit v1.2.3 From ebe945c27628fca03723582eba138acc2e2f3d15 Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Tue, 18 Dec 2012 14:23:10 -0800 Subject: memcg: add comments clarifying aspects of cache attribute propagation This patch clarifies two aspects of cache attribute propagation. First, the expected context for the for_each_memcg_cache macro in memcontrol.h. The usages already in the codebase are safe. In mm/slub.c, it is trivially safe because the lock is acquired right before the loop. In mm/slab.c, it is less so: the lock is acquired by an outer function a few steps back in the stack, so a VM_BUG_ON() is added to make sure it is indeed safe. A comment is also added to detail why we are returning the value of the parent cache and ignoring the children's when we propagate the attributes. Signed-off-by: Glauber Costa Cc: Michal Hocko Cc: Kamezawa Hiroyuki Cc: Johannes Weiner Acked-by: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index ea02ff970836..0108a56f814e 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -422,6 +422,12 @@ static inline void sock_release_memcg(struct sock *sk) extern struct static_key memcg_kmem_enabled_key; extern int memcg_limited_groups_array_size; + +/* + * Helper macro to loop through all memcg-specific caches. Callers must still + * check if the cache is valid (it is either valid or NULL). + * the slab_mutex must be held when looping through those caches + */ #define for_each_memcg_cache_index(_idx) \ for ((_idx) = 0; i < memcg_limited_groups_array_size; (_idx)++) -- cgit v1.2.3 From 7179e7bf4592ac5a7b30257a7df6259ee81e51da Mon Sep 17 00:00:00 2001 From: Jianguo Wu Date: Tue, 18 Dec 2012 14:23:19 -0800 Subject: mm/hugetlb: create hugetlb cgroup file in hugetlb_init Build kernel with CONFIG_HUGETLBFS=y,CONFIG_HUGETLB_PAGE=y and CONFIG_CGROUP_HUGETLB=y, then specify hugepagesz=xx boot option, system will fail to boot. This failure is caused by following code path: setup_hugepagesz hugetlb_add_hstate hugetlb_cgroup_file_init cgroup_add_cftypes kzalloc <--slab is *not available* yet For this path, slab is not available yet, so memory allocated will be failed, and cause WARN_ON() in hugetlb_cgroup_file_init(). So I move hugetlb_cgroup_file_init() into hugetlb_init(). [akpm@linux-foundation.org: tweak coding-style, remove pointless __init on inlined function] [akpm@linux-foundation.org: fix warning] Signed-off-by: Jianguo Wu Signed-off-by: Jiang Liu Reviewed-by: Aneesh Kumar K.V Acked-by: Michal Hocko Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/hugetlb_cgroup.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hugetlb_cgroup.h b/include/linux/hugetlb_cgroup.h index d73878c694b3..ce8217f7b5c2 100644 --- a/include/linux/hugetlb_cgroup.h +++ b/include/linux/hugetlb_cgroup.h @@ -62,7 +62,7 @@ extern void hugetlb_cgroup_uncharge_page(int idx, unsigned long nr_pages, struct page *page); extern void hugetlb_cgroup_uncharge_cgroup(int idx, unsigned long nr_pages, struct hugetlb_cgroup *h_cg); -extern int hugetlb_cgroup_file_init(int idx) __init; +extern void hugetlb_cgroup_file_init(void) __init; extern void hugetlb_cgroup_migrate(struct page *oldhpage, struct page *newhpage); @@ -111,9 +111,8 @@ hugetlb_cgroup_uncharge_cgroup(int idx, unsigned long nr_pages, return; } -static inline int __init hugetlb_cgroup_file_init(int idx) +static inline void hugetlb_cgroup_file_init(void) { - return 0; } static inline void hugetlb_cgroup_migrate(struct page *oldhpage, -- cgit v1.2.3 From 59771079c18c44e39106f0f30054025acafadb41 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 19 Dec 2012 07:18:35 -0800 Subject: blk: avoid divide-by-zero with zero discard granularity Commit 8dd2cb7e880d ("block: discard granularity might not be power of 2") changed a couple of 'binary and' operations into modulus operations. Which turned the harmless case of a zero discard_granularity into a possible divide-by-zero. The code also had a much more subtle bug: it was doing the modulus of a value in bytes using 'sector_t'. That was always conceptually wrong, but didn't actually matter back when the code assumed a power-of-two granularity: we only looked at the low bits anyway. But with potentially arbitrary sector numbers, using a 'sector_t' to express bytes is very very wrong: depending on configuration it limits the starting offset of the device to just 32 bits, and any overflow would result in a wrong value if the modulus wasn't a power-of-two. So re-write the code to not only protect against the divide-by-zero, but to do the starting sector arithmetic in sectors, and using the proper types. [ For any mathematicians out there: it also looks monumentally stupid to do the 'modulo granularity' operation *twice*, never mind having a "+ granularity" in the second modulus op. But that's the easiest way to avoid negative values or overflow, and it is how the original code was done. ] Reported-by: Ingo Molnar Reported-by: Doug Anderson Cc: Neil Brown Cc: Shaohua Li Acked-by: Jens Axboe Signed-off-by: Linus Torvalds --- include/linux/blkdev.h | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index acb4f7bbbd32..f94bc83011ed 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1188,14 +1188,25 @@ static inline int queue_discard_alignment(struct request_queue *q) static inline int queue_limit_discard_alignment(struct queue_limits *lim, sector_t sector) { - sector_t alignment = sector << 9; - alignment = sector_div(alignment, lim->discard_granularity); + unsigned int alignment, granularity, offset; if (!lim->max_discard_sectors) return 0; - alignment = lim->discard_granularity + lim->discard_alignment - alignment; - return sector_div(alignment, lim->discard_granularity); + /* Why are these in bytes, not sectors? */ + alignment = lim->discard_alignment >> 9; + granularity = lim->discard_granularity >> 9; + if (!granularity) + return 0; + + /* Offset of the partition start in 'granularity' sectors */ + offset = sector_div(sector, granularity); + + /* And why do we do this modulus *again* in blkdev_issue_discard()? */ + offset = (granularity + alignment - offset) % granularity; + + /* Turn it back into bytes, gaah */ + return offset << 9; } static inline int bdev_discard_alignment(struct block_device *bdev) -- cgit v1.2.3 From ab28698d33af05abab0bcf8021eafe38f7434f24 Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Wed, 19 Dec 2012 09:10:09 -0600 Subject: of: define struct device in of_platform.h if !OF_DEVICE and !OF_ADDRESS Fixes the following warning: include/linux/of_platform.h:106:13: warning: 'struct device' declared inside parameter list [enabled by default] include/linux/of_platform.h:106:13: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default] Signed-off-by: Jonas Gorski Signed-off-by: Rob Herring Signed-off-by: Grant Likely --- include/linux/of_platform.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/of_platform.h b/include/linux/of_platform.h index b47d2040c9f2..3863a4dbdf18 100644 --- a/include/linux/of_platform.h +++ b/include/linux/of_platform.h @@ -100,6 +100,7 @@ extern int of_platform_populate(struct device_node *root, #if !defined(CONFIG_OF_ADDRESS) struct of_dev_auxdata; +struct device; static inline int of_platform_populate(struct device_node *root, const struct of_device_id *matches, const struct of_dev_auxdata *lookup, -- cgit v1.2.3 From 3c439b5586e9200f7e6287ee77c175c4d5b0eeed Mon Sep 17 00:00:00 2001 From: Jack Morgenstein Date: Thu, 6 Dec 2012 17:12:00 +0000 Subject: mlx4_core: Allow choosing flow steering mode Device managed flow steering will be enabled only under administrator directive provided through setting the existing module parameter log_num_mgm_entry_size to -1 (if the device actually supports flow steering). If flow steering isn't requested or not available, the driver will use the value of log_num_mgm_entry_size and B0 steering. Signed-off-by: Jack Morgenstein Signed-off-by: Or Gerlitz Signed-off-by: Roland Dreier --- include/linux/mlx4/device.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index 21821da2abfd..20ea939c22a6 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -625,6 +625,7 @@ struct mlx4_dev { u8 rev_id; char board_id[MLX4_BOARD_ID_LEN]; int num_vfs; + int oper_log_mgm_entry_size; u64 regid_promisc_array[MLX4_MAX_PORTS + 1]; u64 regid_allmulti_array[MLX4_MAX_PORTS + 1]; }; -- cgit v1.2.3 From a1c088e01b71d90852b0df5a77cdae46bd0e0c05 Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Tue, 18 Dec 2012 04:45:29 +0000 Subject: usbnet: handle PM failure gracefully If a device fails to do remote wakeup, this is no reason to abort an open totally. This patch just continues without runtime PM. Signed-off-by: Oliver Neukum Signed-off-by: David S. Miller --- include/linux/usb/usbnet.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h index 9bbeabf66c54..288b32aadab2 100644 --- a/include/linux/usb/usbnet.h +++ b/include/linux/usb/usbnet.h @@ -69,6 +69,7 @@ struct usbnet { # define EVENT_DEV_ASLEEP 6 # define EVENT_DEV_OPEN 7 # define EVENT_DEVICE_REPORT_IDLE 8 +# define EVENT_NO_RUNTIME_PM 9 }; static inline struct usb_driver *driver_of(struct usb_interface *intf) -- cgit v1.2.3 From 2dd7c8cf29769f6b66f26b501db2364640c2c9d0 Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Tue, 18 Dec 2012 04:45:52 +0000 Subject: usbnet: generic manage_power() Centralise common code for manage_power() in usbnet by making a generic simple implementation Signed-off-by: Oliver Neukum Signed-off-by: David S. Miller --- include/linux/usb/usbnet.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h index 288b32aadab2..bd45eb7bedc8 100644 --- a/include/linux/usb/usbnet.h +++ b/include/linux/usb/usbnet.h @@ -241,4 +241,6 @@ extern void usbnet_set_msglevel(struct net_device *, u32); extern void usbnet_get_drvinfo(struct net_device *, struct ethtool_drvinfo *); extern int usbnet_nway_reset(struct net_device *net); +extern int usbnet_manage_power(struct usbnet *, int); + #endif /* __LINUX_USB_USBNET_H */ -- cgit v1.2.3 From cf13a84d174947df4bb809edfb4887393642303e Mon Sep 17 00:00:00 2001 From: Fabio Porcedda Date: Fri, 5 Oct 2012 12:16:09 +0200 Subject: watchdog: WatchDog Timer Driver Core: fix comment Signed-off-by: Fabio Porcedda Signed-off-by: Wim Van Sebroeck --- include/linux/watchdog.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/watchdog.h b/include/linux/watchdog.h index 87490ac4bd87..3a9df2f43be6 100644 --- a/include/linux/watchdog.h +++ b/include/linux/watchdog.h @@ -129,7 +129,7 @@ static inline void *watchdog_get_drvdata(struct watchdog_device *wdd) return wdd->driver_data; } -/* drivers/watchdog/core/watchdog_core.c */ +/* drivers/watchdog/watchdog_core.c */ extern int watchdog_register_device(struct watchdog_device *); extern void watchdog_unregister_device(struct watchdog_device *); -- cgit v1.2.3 From 468366138850f20543f1d4878028900672b23dae Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 23 Nov 2012 09:12:59 -0500 Subject: COMPAT_SYSCALL_DEFINE: infrastructure Signed-off-by: Al Viro --- include/linux/compat.h | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) (limited to 'include/linux') diff --git a/include/linux/compat.h b/include/linux/compat.h index 784ebfe63c48..a7877fa809fd 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -23,6 +23,48 @@ #define COMPAT_USE_64BIT_TIME 0 #endif +#ifndef __SC_DELOUSE +#define __SC_DELOUSE(t,v) ((t)(unsigned long)(v)) +#endif + +#define __SC_CCAST1(t1, a1) __SC_DELOUSE(t1,a1) +#define __SC_CCAST2(t2, a2, ...) __SC_DELOUSE(t2,a2), __SC_CCAST1(__VA_ARGS__) +#define __SC_CCAST3(t3, a3, ...) __SC_DELOUSE(t3,a3), __SC_CCAST2(__VA_ARGS__) +#define __SC_CCAST4(t4, a4, ...) __SC_DELOUSE(t4,a4), __SC_CCAST3(__VA_ARGS__) +#define __SC_CCAST5(t5, a5, ...) __SC_DELOUSE(t5,a5), __SC_CCAST4(__VA_ARGS__) +#define __SC_CCAST6(t6, a6, ...) __SC_DELOUSE(t6,a6), __SC_CCAST5(__VA_ARGS__) +#define COMPAT_SYSCALL_DEFINE1(name, ...) \ + COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__) +#define COMPAT_SYSCALL_DEFINE2(name, ...) \ + COMPAT_SYSCALL_DEFINEx(2, _##name, __VA_ARGS__) +#define COMPAT_SYSCALL_DEFINE3(name, ...) \ + COMPAT_SYSCALL_DEFINEx(3, _##name, __VA_ARGS__) +#define COMPAT_SYSCALL_DEFINE4(name, ...) \ + COMPAT_SYSCALL_DEFINEx(4, _##name, __VA_ARGS__) +#define COMPAT_SYSCALL_DEFINE5(name, ...) \ + COMPAT_SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) +#define COMPAT_SYSCALL_DEFINE6(name, ...) \ + COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) + +#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS + +#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \ + asmlinkage long compat_sys##name(__SC_DECL##x(__VA_ARGS__)); \ + static inline long C_SYSC##name(__SC_DECL##x(__VA_ARGS__)); \ + asmlinkage long compat_SyS##name(__SC_LONG##x(__VA_ARGS__)) \ + { \ + return (long) C_SYSC##name(__SC_CCAST##x(__VA_ARGS__)); \ + } \ + SYSCALL_ALIAS(compat_sys##name, compat_SyS##name); \ + static inline long C_SYSC##name(__SC_DECL##x(__VA_ARGS__)) + +#else /* CONFIG_HAVE_SYSCALL_WRAPPERS */ + +#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \ + asmlinkage long compat_sys##name(__SC_DECL##x(__VA_ARGS__)) + +#endif /* CONFIG_HAVE_SYSCALL_WRAPPERS */ + #define compat_jiffies_to_clock_t(x) \ (((unsigned long)(x) * COMPAT_USER_HZ) / HZ) -- cgit v1.2.3 From ae903caae267154de7cf8576b130ff474630596b Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 14 Dec 2012 12:44:11 -0500 Subject: Bury the conditionals from kernel_thread/kernel_execve series All architectures have CONFIG_GENERIC_KERNEL_THREAD CONFIG_GENERIC_KERNEL_EXECVE __ARCH_WANT_SYS_EXECVE None of them have __ARCH_WANT_KERNEL_EXECVE and there are only two callers of kernel_execve() (which is a trivial wrapper for do_execve() now) left. Kill the conditionals and make both callers use do_execve(). Signed-off-by: Al Viro --- include/linux/binfmts.h | 4 ---- include/linux/sched.h | 2 -- include/linux/syscalls.h | 9 --------- 3 files changed, 15 deletions(-) (limited to 'include/linux') diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h index 2630c9b41a86..8c1388c6ae27 100644 --- a/include/linux/binfmts.h +++ b/include/linux/binfmts.h @@ -121,8 +121,4 @@ extern void install_exec_creds(struct linux_binprm *bprm); extern void set_binfmt(struct linux_binfmt *new); extern void free_bprm(struct linux_binprm *); -#ifdef __ARCH_WANT_KERNEL_EXECVE -extern void ret_from_kernel_execve(struct pt_regs *normal) __noreturn; -#endif - #endif /* _LINUX_BINFMTS_H */ diff --git a/include/linux/sched.h b/include/linux/sched.h index 1162258bcaf0..9e5a54e3d84f 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2291,9 +2291,7 @@ extern int do_execve(const char *, const char __user * const __user *); extern long do_fork(unsigned long, unsigned long, unsigned long, int __user *, int __user *); struct task_struct *fork_idle(int); -#ifdef CONFIG_GENERIC_KERNEL_THREAD extern pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags); -#endif extern void set_task_comm(struct task_struct *tsk, char *from); extern char *get_task_comm(char *to, struct task_struct *tsk); diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 91835e7f364d..9fe5f946526e 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -827,15 +827,6 @@ asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags, const char __user *pathname); asmlinkage long sys_syncfs(int fd); -#ifndef CONFIG_GENERIC_KERNEL_EXECVE -int kernel_execve(const char *filename, const char *const argv[], const char *const envp[]); -#else -#define kernel_execve(filename, argv, envp) \ - do_execve(filename, \ - (const char __user *const __user *)argv, \ - (const char __user *const __user *)envp) -#endif - asmlinkage long sys_fork(void); asmlinkage long sys_vfork(void); #ifdef CONFIG_CLONE_BACKWARDS -- cgit v1.2.3 From 1ca97bb541a1f5a735e697a8bba763cde3aab452 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 18 Nov 2012 12:50:10 -0500 Subject: new helper: current_user_stack_pointer() Cross-architecture equivalent of rdusp(); default is user_stack_pointer(current_pt_regs()) - that works for almost all platforms that have usp saved in pt_regs. The only exception from that is ia64 - we want memory stack, not the backing store for register one. Signed-off-by: Al Viro --- include/linux/ptrace.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index a89ff04bddd9..a3a9d085f932 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -342,6 +342,10 @@ static inline void user_single_step_siginfo(struct task_struct *tsk, #define signal_pt_regs() task_pt_regs(current) #endif +#ifndef current_user_stack_pointer +#define current_user_stack_pointer() user_stack_pointer(current_pt_regs()) +#endif + extern int task_current_syscall(struct task_struct *target, long *callno, unsigned long args[6], unsigned int maxargs, unsigned long *sp, unsigned long *pc); -- cgit v1.2.3 From 5c49574ffd7ac07eae8c3b065d19e6ebc7e4760f Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 18 Nov 2012 15:29:16 -0500 Subject: new helper: restore_altstack() to be used by rt_sigreturn instances Signed-off-by: Al Viro --- include/linux/signal.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/signal.h b/include/linux/signal.h index e19a011b43b7..5969522136fe 100644 --- a/include/linux/signal.h +++ b/include/linux/signal.h @@ -385,4 +385,6 @@ int unhandled_signal(struct task_struct *tsk, int sig); void signals_init(void); +int restore_altstack(const stack_t __user *); + #endif /* _LINUX_SIGNAL_H */ -- cgit v1.2.3 From 9b064fc3f95a8e44e929fdf4d6037334ea03d15b Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 14 Dec 2012 13:49:35 -0500 Subject: new helper: compat_user_stack_pointer() Compat counterpart of current_user_stack_pointer(); for most of the biarch architectures those two are identical, but e.g. arm64 and arm use different registers for stack pointer... Note that amd64 variants of current_user_stack_pointer/compat_user_stack_pointer do *not* rely on pt_regs having been through FIXUP_TOP_OF_STACK. Signed-off-by: Al Viro --- include/linux/compat.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/compat.h b/include/linux/compat.h index a7877fa809fd..62bb76f91baf 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -65,6 +65,9 @@ #endif /* CONFIG_HAVE_SYSCALL_WRAPPERS */ +#ifndef compat_user_stack_pointer +#define compat_user_stack_pointer() current_user_stack_pointer() +#endif #define compat_jiffies_to_clock_t(x) \ (((unsigned long)(x) * COMPAT_USER_HZ) / HZ) -- cgit v1.2.3 From 6bf9adfc90370b695cb111116e15fdc0e1906270 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 14 Dec 2012 14:09:47 -0500 Subject: introduce generic sys_sigaltstack(), switch x86 and um to it Conditional on CONFIG_GENERIC_SIGALTSTACK; architectures that do not select it are completely unaffected Signed-off-by: Al Viro --- include/linux/syscalls.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 9fe5f946526e..6ca1e08210c6 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -63,6 +63,7 @@ struct getcpu_cache; struct old_linux_dirent; struct perf_event_attr; struct file_handle; +struct sigaltstack; #include #include @@ -299,6 +300,11 @@ asmlinkage long sys_personality(unsigned int personality); asmlinkage long sys_sigpending(old_sigset_t __user *set); asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set, old_sigset_t __user *oset); +#ifdef CONFIG_GENERIC_SIGALTSTACK +asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss, + struct sigaltstack __user *uoss); +#endif + asmlinkage long sys_getitimer(int which, struct itimerval __user *value); asmlinkage long sys_setitimer(int which, struct itimerval __user *value, -- cgit v1.2.3 From 9026843952adac5b123c7b8dc961e5c15828d9e1 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 14 Dec 2012 14:47:53 -0500 Subject: generic compat_sys_sigaltstack() Again, conditional on CONFIG_GENERIC_SIGALTSTACK Signed-off-by: Al Viro --- include/linux/compat.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include/linux') diff --git a/include/linux/compat.h b/include/linux/compat.h index 62bb76f91baf..cb5637e2ee2c 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -68,6 +68,16 @@ #ifndef compat_user_stack_pointer #define compat_user_stack_pointer() current_user_stack_pointer() #endif +#ifdef CONFIG_GENERIC_SIGALTSTACK +#ifndef compat_sigaltstack /* we'll need that for MIPS */ +typedef struct compat_sigaltstack { + compat_uptr_t ss_sp; + int ss_flags; + compat_size_t ss_size; +} compat_stack_t; +#endif +#endif + #define compat_jiffies_to_clock_t(x) \ (((unsigned long)(x) * COMPAT_USER_HZ) / HZ) @@ -632,6 +642,12 @@ asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid, asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, compat_size_t count); +#ifdef CONFIG_GENERIC_SIGALTSTACK +asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, + compat_stack_t __user *uoss_ptr); + +int compat_restore_altstack(const compat_stack_t __user *uss); +#endif #else -- cgit v1.2.3 From c40702c49faef05ae324f121d8b3e215244ee152 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 20 Nov 2012 14:24:26 -0500 Subject: new helpers: __save_altstack/__compat_save_altstack, switch x86 and um to those note that they are relying on access_ok() already checked by caller. Signed-off-by: Al Viro --- include/linux/compat.h | 1 + include/linux/signal.h | 1 + 2 files changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/compat.h b/include/linux/compat.h index cb5637e2ee2c..334813307ec1 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -647,6 +647,7 @@ asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, compat_stack_t __user *uoss_ptr); int compat_restore_altstack(const compat_stack_t __user *uss); +int __compat_save_altstack(compat_stack_t __user *, unsigned long); #endif #else diff --git a/include/linux/signal.h b/include/linux/signal.h index 5969522136fe..0a89ffc48466 100644 --- a/include/linux/signal.h +++ b/include/linux/signal.h @@ -386,5 +386,6 @@ int unhandled_signal(struct task_struct *tsk, int sig); void signals_init(void); int restore_altstack(const stack_t __user *); +int __save_altstack(stack_t __user *, unsigned long); #endif /* _LINUX_SIGNAL_H */ -- cgit v1.2.3 From ada65c74059f8c104f1b467c126205471634c435 Mon Sep 17 00:00:00 2001 From: Maarten Lankhorst Date: Wed, 12 Dec 2012 10:23:03 +0100 Subject: dma-buf: remove fallback for !CONFIG_DMA_SHARED_BUFFER Documentation says that code requiring dma-buf should add it to select, so inline fallbacks are not going to be used. A link error will make it obvious what went wrong, instead of silently doing nothing at runtime. Signed-off-by: Maarten Lankhorst Reviewed-by: Daniel Vetter Reviewed-by: Rob Clark Signed-off-by: Sumit Semwal --- include/linux/dma-buf.h | 99 ------------------------------------------------- 1 file changed, 99 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h index eb48f3816df9..bd2e52ccc4f2 100644 --- a/include/linux/dma-buf.h +++ b/include/linux/dma-buf.h @@ -156,7 +156,6 @@ static inline void get_dma_buf(struct dma_buf *dmabuf) get_file(dmabuf->file); } -#ifdef CONFIG_DMA_SHARED_BUFFER struct dma_buf_attachment *dma_buf_attach(struct dma_buf *dmabuf, struct device *dev); void dma_buf_detach(struct dma_buf *dmabuf, @@ -184,103 +183,5 @@ int dma_buf_mmap(struct dma_buf *, struct vm_area_struct *, unsigned long); void *dma_buf_vmap(struct dma_buf *); void dma_buf_vunmap(struct dma_buf *, void *vaddr); -#else - -static inline struct dma_buf_attachment *dma_buf_attach(struct dma_buf *dmabuf, - struct device *dev) -{ - return ERR_PTR(-ENODEV); -} - -static inline void dma_buf_detach(struct dma_buf *dmabuf, - struct dma_buf_attachment *dmabuf_attach) -{ - return; -} - -static inline struct dma_buf *dma_buf_export(void *priv, - const struct dma_buf_ops *ops, - size_t size, int flags) -{ - return ERR_PTR(-ENODEV); -} - -static inline int dma_buf_fd(struct dma_buf *dmabuf, int flags) -{ - return -ENODEV; -} - -static inline struct dma_buf *dma_buf_get(int fd) -{ - return ERR_PTR(-ENODEV); -} - -static inline void dma_buf_put(struct dma_buf *dmabuf) -{ - return; -} - -static inline struct sg_table *dma_buf_map_attachment( - struct dma_buf_attachment *attach, enum dma_data_direction write) -{ - return ERR_PTR(-ENODEV); -} - -static inline void dma_buf_unmap_attachment(struct dma_buf_attachment *attach, - struct sg_table *sg, enum dma_data_direction dir) -{ - return; -} - -static inline int dma_buf_begin_cpu_access(struct dma_buf *dmabuf, - size_t start, size_t len, - enum dma_data_direction dir) -{ - return -ENODEV; -} - -static inline void dma_buf_end_cpu_access(struct dma_buf *dmabuf, - size_t start, size_t len, - enum dma_data_direction dir) -{ -} - -static inline void *dma_buf_kmap_atomic(struct dma_buf *dmabuf, - unsigned long pnum) -{ - return NULL; -} - -static inline void dma_buf_kunmap_atomic(struct dma_buf *dmabuf, - unsigned long pnum, void *vaddr) -{ -} - -static inline void *dma_buf_kmap(struct dma_buf *dmabuf, unsigned long pnum) -{ - return NULL; -} - -static inline void dma_buf_kunmap(struct dma_buf *dmabuf, - unsigned long pnum, void *vaddr) -{ -} - -static inline int dma_buf_mmap(struct dma_buf *dmabuf, - struct vm_area_struct *vma, - unsigned long pgoff) -{ - return -ENODEV; -} - -static inline void *dma_buf_vmap(struct dma_buf *dmabuf) -{ - return NULL; -} - -static inline void dma_buf_vunmap(struct dma_buf *dmabuf, void *vaddr) -{ -} -#endif /* CONFIG_DMA_SHARED_BUFFER */ #endif /* __DMA_BUF_H__ */ -- cgit v1.2.3 From 39e3c9553f34381a1b664c27b0c696a266a5735e Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Wed, 28 Nov 2012 11:30:53 -0500 Subject: vfs: remove DCACHE_NEED_LOOKUP The code that relied on that flag was ripped out of btrfs quite some time ago, and never added back. Josef indicated that he was going to take a different approach to the problem in btrfs, and that we could just eliminate this flag. Cc: Josef Bacik Signed-off-by: Jeff Layton Signed-off-by: Al Viro --- include/linux/dcache.h | 8 -------- 1 file changed, 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index 59200795482e..c1754b59ddd3 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -202,7 +202,6 @@ struct dentry_operations { #define DCACHE_MOUNTED 0x10000 /* is a mountpoint */ #define DCACHE_NEED_AUTOMOUNT 0x20000 /* handle automount on this dir */ #define DCACHE_MANAGE_TRANSIT 0x40000 /* manage transit from this dirent */ -#define DCACHE_NEED_LOOKUP 0x80000 /* dentry requires i_op->lookup */ #define DCACHE_MANAGED_DENTRY \ (DCACHE_MOUNTED|DCACHE_NEED_AUTOMOUNT|DCACHE_MANAGE_TRANSIT) @@ -408,13 +407,6 @@ static inline bool d_mountpoint(struct dentry *dentry) return dentry->d_flags & DCACHE_MOUNTED; } -static inline bool d_need_lookup(struct dentry *dentry) -{ - return dentry->d_flags & DCACHE_NEED_LOOKUP; -} - -extern void d_clear_need_lookup(struct dentry *dentry); - extern int sysctl_vfs_cache_pressure; #endif /* __LINUX_DCACHE_H */ -- cgit v1.2.3 From c4d6d8dbf335c7fa47341654a37c53a512b519bb Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 20 Dec 2012 21:52:32 +0000 Subject: CacheFiles: Fix the marking of cached pages Under some circumstances CacheFiles defers the marking of pages with PG_fscache so that it can take advantage of pagevecs to reduce the number of calls to fscache_mark_pages_cached() and the netfs's hook to keep track of this. There are, however, two problems with this: (1) It can lead to the PG_fscache mark being applied _after_ the page is set PG_uptodate and unlocked (by the call to fscache_end_io()). (2) CacheFiles's ref on the page is dropped immediately following fscache_end_io() - and so may not still be held when the mark is applied. This can lead to the page being passed back to the allocator before the mark is applied. Fix this by, where appropriate, marking the page before calling fscache_end_io() and releasing the page. This means that we can't take advantage of pagevecs and have to make a separate call for each page to the marking routines. The symptoms of this are Bad Page state errors cropping up under memory pressure, for example: BUG: Bad page state in process tar pfn:002da page:ffffea0000009fb0 count:0 mapcount:0 mapping: (null) index:0x1447 page flags: 0x1000(private_2) Pid: 4574, comm: tar Tainted: G W 3.1.0-rc4-fsdevel+ #1064 Call Trace: [] ? dump_page+0xb9/0xbe [] bad_page+0xd5/0xea [] get_page_from_freelist+0x35b/0x46a [] __alloc_pages_nodemask+0x362/0x662 [] __do_page_cache_readahead+0x13a/0x267 [] ? __do_page_cache_readahead+0xa2/0x267 [] ra_submit+0x1c/0x20 [] ondemand_readahead+0x28b/0x29a [] ? ondemand_readahead+0x163/0x29a [] page_cache_sync_readahead+0x38/0x3a [] generic_file_aio_read+0x2ab/0x67e [] nfs_file_read+0xa4/0xc9 [nfs] [] do_sync_read+0xba/0xfa [] ? security_file_permission+0x7b/0x84 [] ? rw_verify_area+0xab/0xc8 [] vfs_read+0xaa/0x13a [] sys_read+0x45/0x6c [] system_call_fastpath+0x16/0x1b As can be seen, PG_private_2 (== PG_fscache) is set in the page flags. Instrumenting fscache_mark_pages_cached() to verify whether page->mapping was set appropriately showed that sometimes it wasn't. This led to the discovery that sometimes the page has apparently been reclaimed by the time the marker got to see it. Reported-by: M. Stevens Signed-off-by: David Howells Reviewed-by: Jeff Layton --- include/linux/fscache-cache.h | 3 +++ include/linux/fscache.h | 12 ++++++------ 2 files changed, 9 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h index ce31408b1e47..9879183b55d8 100644 --- a/include/linux/fscache-cache.h +++ b/include/linux/fscache-cache.h @@ -504,6 +504,9 @@ extern void fscache_withdraw_cache(struct fscache_cache *cache); extern void fscache_io_error(struct fscache_cache *cache); +extern void fscache_mark_page_cached(struct fscache_retrieval *op, + struct page *page); + extern void fscache_mark_pages_cached(struct fscache_retrieval *op, struct pagevec *pagevec); diff --git a/include/linux/fscache.h b/include/linux/fscache.h index 9ec20dec3353..f4b6353543bf 100644 --- a/include/linux/fscache.h +++ b/include/linux/fscache.h @@ -135,14 +135,14 @@ struct fscache_cookie_def { */ void (*put_context)(void *cookie_netfs_data, void *context); - /* indicate pages that now have cache metadata retained - * - this function should mark the specified pages as now being cached - * - the pages will have been marked with PG_fscache before this is + /* indicate page that now have cache metadata retained + * - this function should mark the specified page as now being cached + * - the page will have been marked with PG_fscache before this is * called, so this is optional */ - void (*mark_pages_cached)(void *cookie_netfs_data, - struct address_space *mapping, - struct pagevec *cached_pvec); + void (*mark_page_cached)(void *cookie_netfs_data, + struct address_space *mapping, + struct page *page); /* indicate the cookie is no longer cached * - this function is called when the backing store currently caching -- cgit v1.2.3 From ef46ed888efb1e8da33be5d33c9b54476289a43b Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 20 Dec 2012 21:52:35 +0000 Subject: FS-Cache: Make cookie relinquishment wait for outstanding reads Make fscache_relinquish_cookie() log a warning and wait if there are any outstanding reads left on the cookie it was given. Signed-off-by: David Howells --- include/linux/fscache-cache.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h index 9879183b55d8..e3d6d939d959 100644 --- a/include/linux/fscache-cache.h +++ b/include/linux/fscache-cache.h @@ -301,6 +301,7 @@ struct fscache_cookie { #define FSCACHE_COOKIE_PENDING_FILL 3 /* T if pending initial fill on object */ #define FSCACHE_COOKIE_FILLING 4 /* T if filling object incrementally */ #define FSCACHE_COOKIE_UNAVAILABLE 5 /* T if cookie is unavailable (error, etc) */ +#define FSCACHE_COOKIE_WAITING_ON_READS 6 /* T if cookie is waiting on reads */ }; extern struct fscache_cookie fscache_fsdef_index; -- cgit v1.2.3 From 9f10523f891928330b7529da54c1a3cc65180b1a Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 20 Dec 2012 21:52:35 +0000 Subject: FS-Cache: Fix operation state management and accounting Fix the state management of internal fscache operations and the accounting of what operations are in what states. This is done by: (1) Give struct fscache_operation a enum variable that directly represents the state it's currently in, rather than spreading this knowledge over a bunch of flags, who's processing the operation at the moment and whether it is queued or not. This makes it easier to write assertions to check the state at various points and to prevent invalid state transitions. (2) Add an 'operation complete' state and supply a function to indicate the completion of an operation (fscache_op_complete()) and make things call it. The final call to fscache_put_operation() can then check that an op in the appropriate state (complete or cancelled). (3) Adjust the use of object->n_ops, ->n_in_progress, ->n_exclusive to better govern the state of an object: (a) The ->n_ops is now the number of extant operations on the object and is now decremented by fscache_put_operation() only. (b) The ->n_in_progress is simply the number of objects that have been taken off of the object's pending queue for the purposes of being run. This is decremented by fscache_op_complete() only. (c) The ->n_exclusive is the number of exclusive ops that have been submitted and queued or are in progress. It is decremented by fscache_op_complete() and by fscache_cancel_op(). fscache_put_operation() and fscache_operation_gc() now no longer try to clean up ->n_exclusive and ->n_in_progress. That was leading to double decrements against fscache_cancel_op(). fscache_cancel_op() now no longer decrements ->n_ops. That was leading to double decrements against fscache_put_operation(). fscache_submit_exclusive_op() now decides whether it has to queue an op based on ->n_in_progress being > 0 rather than ->n_ops > 0 as the latter will persist in being true even after all preceding operations have been cancelled or completed. Furthermore, if an object is active and there are runnable ops against it, there must be at least one op running. (4) Add a remaining-pages counter (n_pages) to struct fscache_retrieval and provide a function to record completion of the pages as they complete. When n_pages reaches 0, the operation is deemed to be complete and fscache_op_complete() is called. Add calls to fscache_retrieval_complete() anywhere we've finished with a page we've been given to read or allocate for. This includes places where we just return pages to the netfs for reading from the server and where accessing the cache fails and we discard the proposed netfs page. The bugs in the unfixed state management manifest themselves as oopses like the following where the operation completion gets out of sync with return of the cookie by the netfs. This is possible because the cache unlocks and returns all the netfs pages before recording its completion - which means that there's nothing to stop the netfs discarding them and returning the cookie. FS-Cache: Cookie 'NFS.fh' still has outstanding reads ------------[ cut here ]------------ kernel BUG at fs/fscache/cookie.c:519! invalid opcode: 0000 [#1] SMP CPU 1 Modules linked in: cachefiles nfs fscache auth_rpcgss nfs_acl lockd sunrpc Pid: 400, comm: kswapd0 Not tainted 3.1.0-rc7-fsdevel+ #1090 /DG965RY RIP: 0010:[] [] __fscache_relinquish_cookie+0x170/0x343 [fscache] RSP: 0018:ffff8800368cfb00 EFLAGS: 00010282 RAX: 000000000000003c RBX: ffff880023cc8790 RCX: 0000000000000000 RDX: 0000000000002f2e RSI: 0000000000000001 RDI: ffffffff813ab86c RBP: ffff8800368cfb50 R08: 0000000000000002 R09: 0000000000000000 R10: ffff88003a1b7890 R11: ffff88001df6e488 R12: ffff880023d8ed98 R13: ffff880023cc8798 R14: 0000000000000004 R15: ffff88003b8bf370 FS: 0000000000000000(0000) GS:ffff88003bd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00000000008ba008 CR3: 0000000023d93000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process kswapd0 (pid: 400, threadinfo ffff8800368ce000, task ffff88003b8bf040) Stack: ffff88003b8bf040 ffff88001df6e528 ffff88001df6e528 ffffffffa00b46b0 ffff88003b8bf040 ffff88001df6e488 ffff88001df6e620 ffffffffa00b46b0 ffff88001ebd04c8 0000000000000004 ffff8800368cfb70 ffffffffa00b2c91 Call Trace: [] nfs_fscache_release_inode_cookie+0x3b/0x47 [nfs] [] nfs_clear_inode+0x3c/0x41 [nfs] [] nfs4_evict_inode+0x2f/0x33 [nfs] [] evict+0xa1/0x15c [] dispose_list+0x2c/0x38 [] prune_icache_sb+0x28c/0x29b [] prune_super+0xd5/0x140 [] shrink_slab+0x102/0x1ab [] balance_pgdat+0x2f2/0x595 [] ? process_timeout+0xb/0xb [] kswapd+0x270/0x289 [] ? __init_waitqueue_head+0x46/0x46 [] ? balance_pgdat+0x595/0x595 [] kthread+0x7f/0x87 [] kernel_thread_helper+0x4/0x10 [] ? finish_task_switch+0x45/0xc0 [] ? retint_restore_args+0xe/0xe [] ? __init_kthread_worker+0x53/0x53 [] ? gs_change+0xb/0xb Signed-off-by: David Howells --- include/linux/fscache-cache.h | 37 ++++++++++++++++++++++++++++++++----- 1 file changed, 32 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h index e3d6d939d959..f5facd1d333f 100644 --- a/include/linux/fscache-cache.h +++ b/include/linux/fscache-cache.h @@ -75,6 +75,16 @@ extern wait_queue_head_t fscache_cache_cleared_wq; typedef void (*fscache_operation_release_t)(struct fscache_operation *op); typedef void (*fscache_operation_processor_t)(struct fscache_operation *op); +enum fscache_operation_state { + FSCACHE_OP_ST_BLANK, /* Op is not yet submitted */ + FSCACHE_OP_ST_INITIALISED, /* Op is initialised */ + FSCACHE_OP_ST_PENDING, /* Op is blocked from running */ + FSCACHE_OP_ST_IN_PROGRESS, /* Op is in progress */ + FSCACHE_OP_ST_COMPLETE, /* Op is complete */ + FSCACHE_OP_ST_CANCELLED, /* Op has been cancelled */ + FSCACHE_OP_ST_DEAD /* Op is now dead */ +}; + struct fscache_operation { struct work_struct work; /* record for async ops */ struct list_head pend_link; /* link in object->pending_ops */ @@ -86,10 +96,10 @@ struct fscache_operation { #define FSCACHE_OP_MYTHREAD 0x0002 /* - processing is done be issuing thread, not pool */ #define FSCACHE_OP_WAITING 4 /* cleared when op is woken */ #define FSCACHE_OP_EXCLUSIVE 5 /* exclusive op, other ops must wait */ -#define FSCACHE_OP_DEAD 6 /* op is now dead */ -#define FSCACHE_OP_DEC_READ_CNT 7 /* decrement object->n_reads on destruction */ -#define FSCACHE_OP_KEEP_FLAGS 0xc0 /* flags to keep when repurposing an op */ +#define FSCACHE_OP_DEC_READ_CNT 6 /* decrement object->n_reads on destruction */ +#define FSCACHE_OP_KEEP_FLAGS 0x0070 /* flags to keep when repurposing an op */ + enum fscache_operation_state state; atomic_t usage; unsigned debug_id; /* debugging ID */ @@ -106,6 +116,7 @@ extern atomic_t fscache_op_debug_id; extern void fscache_op_work_func(struct work_struct *work); extern void fscache_enqueue_operation(struct fscache_operation *); +extern void fscache_op_complete(struct fscache_operation *); extern void fscache_put_operation(struct fscache_operation *); /** @@ -122,6 +133,7 @@ static inline void fscache_operation_init(struct fscache_operation *op, { INIT_WORK(&op->work, fscache_op_work_func); atomic_set(&op->usage, 1); + op->state = FSCACHE_OP_ST_INITIALISED; op->debug_id = atomic_inc_return(&fscache_op_debug_id); op->processor = processor; op->release = release; @@ -138,6 +150,7 @@ struct fscache_retrieval { void *context; /* netfs read context (pinned) */ struct list_head to_do; /* list of things to be done by the backend */ unsigned long start_time; /* time at which retrieval started */ + unsigned n_pages; /* number of pages to be retrieved */ }; typedef int (*fscache_page_retrieval_func_t)(struct fscache_retrieval *op, @@ -173,9 +186,23 @@ static inline void fscache_enqueue_retrieval(struct fscache_retrieval *op) fscache_enqueue_operation(&op->op); } +/** + * fscache_retrieval_complete - Record (partial) completion of a retrieval + * @op: The retrieval operation affected + * @n_pages: The number of pages to account for + */ +static inline void fscache_retrieval_complete(struct fscache_retrieval *op, + int n_pages) +{ + op->n_pages -= n_pages; + if (op->n_pages <= 0) + fscache_op_complete(&op->op); +} + /** * fscache_put_retrieval - Drop a reference to a retrieval operation * @op: The retrieval operation affected + * @n_pages: The number of pages to account for * * Drop a reference to a retrieval operation. */ @@ -333,10 +360,10 @@ struct fscache_object { int debug_id; /* debugging ID */ int n_children; /* number of child objects */ - int n_ops; /* number of ops outstanding on object */ + int n_ops; /* number of extant ops on object */ int n_obj_ops; /* number of object ops outstanding on object */ int n_in_progress; /* number of ops in progress */ - int n_exclusive; /* number of exclusive ops queued */ + int n_exclusive; /* number of exclusive ops queued or in progress */ atomic_t n_reads; /* number of read ops in progress */ spinlock_t lock; /* state and operations lock */ -- cgit v1.2.3 From ef778e7ae67cd426c30cad43378b908f5eb0bad5 Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 20 Dec 2012 21:52:36 +0000 Subject: FS-Cache: Provide proper invalidation Provide a proper invalidation method rather than relying on the netfs retiring the cookie it has and getting a new one. The problem with this is that isn't easy for the netfs to make sure that it has completed/cancelled all its outstanding storage and retrieval operations on the cookie it is retiring. Instead, have the cache provide an invalidation method that will cancel or wait for all currently outstanding operations before invalidating the cache, and will cause new operations to queue up behind that. Whilst invalidation is in progress, some requests will be rejected until the cache can stack a barrier on the operation queue to cause new operations to be deferred behind it. Signed-off-by: David Howells --- include/linux/fscache-cache.h | 8 +++++++- include/linux/fscache.h | 38 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 45 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h index f5facd1d333f..1e454ad7a832 100644 --- a/include/linux/fscache-cache.h +++ b/include/linux/fscache-cache.h @@ -254,6 +254,9 @@ struct fscache_cache_ops { /* store the updated auxiliary data on an object */ void (*update_object)(struct fscache_object *object); + /* Invalidate an object */ + void (*invalidate_object)(struct fscache_operation *op); + /* discard the resources pinned by an object and effect retirement if * necessary */ void (*drop_object)(struct fscache_object *object); @@ -329,6 +332,7 @@ struct fscache_cookie { #define FSCACHE_COOKIE_FILLING 4 /* T if filling object incrementally */ #define FSCACHE_COOKIE_UNAVAILABLE 5 /* T if cookie is unavailable (error, etc) */ #define FSCACHE_COOKIE_WAITING_ON_READS 6 /* T if cookie is waiting on reads */ +#define FSCACHE_COOKIE_INVALIDATING 7 /* T if cookie is being invalidated */ }; extern struct fscache_cookie fscache_fsdef_index; @@ -345,6 +349,7 @@ struct fscache_object { /* active states */ FSCACHE_OBJECT_AVAILABLE, /* cleaning up object after creation */ FSCACHE_OBJECT_ACTIVE, /* object is usable */ + FSCACHE_OBJECT_INVALIDATING, /* object is invalidating */ FSCACHE_OBJECT_UPDATING, /* object is updating */ /* terminal states */ @@ -378,7 +383,8 @@ struct fscache_object { #define FSCACHE_OBJECT_EV_RELEASE 4 /* T if netfs requested object release */ #define FSCACHE_OBJECT_EV_RETIRE 5 /* T if netfs requested object retirement */ #define FSCACHE_OBJECT_EV_WITHDRAW 6 /* T if cache requested object withdrawal */ -#define FSCACHE_OBJECT_EVENTS_MASK 0x7f /* mask of all events*/ +#define FSCACHE_OBJECT_EV_INVALIDATE 7 /* T if cache requested object invalidation */ +#define FSCACHE_OBJECT_EVENTS_MASK 0xff /* mask of all events*/ unsigned long flags; #define FSCACHE_OBJECT_LOCK 0 /* T if object is busy being processed */ diff --git a/include/linux/fscache.h b/include/linux/fscache.h index f4b6353543bf..7a086235da4b 100644 --- a/include/linux/fscache.h +++ b/include/linux/fscache.h @@ -185,6 +185,8 @@ extern struct fscache_cookie *__fscache_acquire_cookie( extern void __fscache_relinquish_cookie(struct fscache_cookie *, int); extern void __fscache_update_cookie(struct fscache_cookie *); extern int __fscache_attr_changed(struct fscache_cookie *); +extern void __fscache_invalidate(struct fscache_cookie *); +extern void __fscache_wait_on_invalidate(struct fscache_cookie *); extern int __fscache_read_or_alloc_page(struct fscache_cookie *, struct page *, fscache_rw_complete_t, @@ -389,6 +391,42 @@ int fscache_attr_changed(struct fscache_cookie *cookie) return -ENOBUFS; } +/** + * fscache_invalidate - Notify cache that an object needs invalidation + * @cookie: The cookie representing the cache object + * + * Notify the cache that an object is needs to be invalidated and that it + * should abort any retrievals or stores it is doing on the cache. The object + * is then marked non-caching until such time as the invalidation is complete. + * + * This can be called with spinlocks held. + * + * See Documentation/filesystems/caching/netfs-api.txt for a complete + * description. + */ +static inline +void fscache_invalidate(struct fscache_cookie *cookie) +{ + if (fscache_cookie_valid(cookie)) + __fscache_invalidate(cookie); +} + +/** + * fscache_wait_on_invalidate - Wait for invalidation to complete + * @cookie: The cookie representing the cache object + * + * Wait for the invalidation of an object to complete. + * + * See Documentation/filesystems/caching/netfs-api.txt for a complete + * description. + */ +static inline +void fscache_wait_on_invalidate(struct fscache_cookie *cookie) +{ + if (fscache_cookie_valid(cookie)) + __fscache_wait_on_invalidate(cookie); +} + /** * fscache_reserve_space - Reserve data space for a cached object * @cookie: The cookie representing the cache object -- cgit v1.2.3 From a02de9608595c8ef649ef03ae735b0b45e3d4396 Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 20 Dec 2012 21:52:36 +0000 Subject: VFS: Make more complete truncate operation available to CacheFiles Make a more complete truncate operation available to CacheFiles (including security checks and suchlike) so that it can use this to clear invalidated cache files. Signed-off-by: David Howells Acked-by: Al Viro --- include/linux/fs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index a823d4be38e7..017a15b707e2 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1999,6 +1999,7 @@ struct filename { bool separate; /* should "name" be freed? */ }; +extern long vfs_truncate(struct path *, loff_t); extern int do_truncate(struct dentry *, loff_t start, unsigned int time_attrs, struct file *filp); extern int do_fallocate(struct file *file, int mode, loff_t offset, -- cgit v1.2.3 From 36a02de5d7981435931d4608ee3e510b752e072b Mon Sep 17 00:00:00 2001 From: David Howells Date: Wed, 5 Dec 2012 13:34:46 +0000 Subject: FS-Cache: Convert the object event ID #defines into an enum Convert the fscache_object event IDs from #defines into an enum. Also add an extra label to the enum to carry the event count and redefine the event mask in terms of that. Signed-off-by: David Howells --- include/linux/fscache-cache.h | 26 +++++++++++++++++--------- 1 file changed, 17 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h index 1e454ad7a832..73e68c8d5df4 100644 --- a/include/linux/fscache-cache.h +++ b/include/linux/fscache-cache.h @@ -337,6 +337,23 @@ struct fscache_cookie { extern struct fscache_cookie fscache_fsdef_index; +/* + * Event list for fscache_object::{event_mask,events} + */ +enum { + FSCACHE_OBJECT_EV_REQUEUE, /* T if object should be requeued */ + FSCACHE_OBJECT_EV_UPDATE, /* T if object should be updated */ + FSCACHE_OBJECT_EV_INVALIDATE, /* T if cache requested object invalidation */ + FSCACHE_OBJECT_EV_CLEARED, /* T if accessors all gone */ + FSCACHE_OBJECT_EV_ERROR, /* T if fatal error occurred during processing */ + FSCACHE_OBJECT_EV_RELEASE, /* T if netfs requested object release */ + FSCACHE_OBJECT_EV_RETIRE, /* T if netfs requested object retirement */ + FSCACHE_OBJECT_EV_WITHDRAW, /* T if cache requested object withdrawal */ + NR_FSCACHE_OBJECT_EVENTS +}; + +#define FSCACHE_OBJECT_EVENTS_MASK ((1UL << NR_FSCACHE_OBJECT_EVENTS) - 1) + /* * on-disk cache file or index handle */ @@ -376,15 +393,6 @@ struct fscache_object { unsigned long event_mask; /* events this object is interested in */ unsigned long events; /* events to be processed by this object * (order is important - using fls) */ -#define FSCACHE_OBJECT_EV_REQUEUE 0 /* T if object should be requeued */ -#define FSCACHE_OBJECT_EV_UPDATE 1 /* T if object should be updated */ -#define FSCACHE_OBJECT_EV_CLEARED 2 /* T if accessors all gone */ -#define FSCACHE_OBJECT_EV_ERROR 3 /* T if fatal error occurred during processing */ -#define FSCACHE_OBJECT_EV_RELEASE 4 /* T if netfs requested object release */ -#define FSCACHE_OBJECT_EV_RETIRE 5 /* T if netfs requested object retirement */ -#define FSCACHE_OBJECT_EV_WITHDRAW 6 /* T if cache requested object withdrawal */ -#define FSCACHE_OBJECT_EV_INVALIDATE 7 /* T if cache requested object invalidation */ -#define FSCACHE_OBJECT_EVENTS_MASK 0xff /* mask of all events*/ unsigned long flags; #define FSCACHE_OBJECT_LOCK 0 /* T if object is busy being processed */ -- cgit v1.2.3 From 1f372dff1da37e2b36ae9085368fa46896398598 Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 13 Dec 2012 20:03:13 +0000 Subject: FS-Cache: Mark cancellation of in-progress operation Mark as cancelled an operation that is in progress rather than pending at the time it is cancelled, and call fscache_complete_op() to cancel an operation so that blocked ops can be started. Signed-off-by: David Howells --- include/linux/fscache-cache.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h index 73e68c8d5df4..5dfa0aa216b6 100644 --- a/include/linux/fscache-cache.h +++ b/include/linux/fscache-cache.h @@ -116,7 +116,7 @@ extern atomic_t fscache_op_debug_id; extern void fscache_op_work_func(struct work_struct *work); extern void fscache_enqueue_operation(struct fscache_operation *); -extern void fscache_op_complete(struct fscache_operation *); +extern void fscache_op_complete(struct fscache_operation *, bool); extern void fscache_put_operation(struct fscache_operation *); /** @@ -196,7 +196,7 @@ static inline void fscache_retrieval_complete(struct fscache_retrieval *op, { op->n_pages -= n_pages; if (op->n_pages <= 0) - fscache_op_complete(&op->op); + fscache_op_complete(&op->op, true); } /** -- cgit v1.2.3 From d30357f2f0ec0bfb67fd39f8f76d22d02d78631e Mon Sep 17 00:00:00 2001 From: Marco Stornelli Date: Sat, 15 Dec 2012 11:59:20 +0100 Subject: vfs: drop vmtruncate Removed vmtruncate Signed-off-by: Marco Stornelli Signed-off-by: Al Viro --- include/linux/fs.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index a823d4be38e7..a0c5ba57ffc5 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1565,7 +1565,6 @@ struct inode_operations { int (*mknod) (struct inode *,struct dentry *,umode_t,dev_t); int (*rename) (struct inode *, struct dentry *, struct inode *, struct dentry *); - void (*truncate) (struct inode *); int (*setattr) (struct dentry *, struct iattr *); int (*getattr) (struct vfsmount *mnt, struct dentry *, struct kstat *); int (*setxattr) (struct dentry *, const char *,const void *,size_t,int); -- cgit v1.2.3 From 7898575fc81bd707ce0844cb06874d48e39bbe09 Mon Sep 17 00:00:00 2001 From: Marco Stornelli Date: Sat, 15 Dec 2012 12:00:02 +0100 Subject: mm: drop vmtruncate Removed vmtruncate Signed-off-by: Marco Stornelli Signed-off-by: Al Viro --- include/linux/mm.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 7f4f906190bd..63204078f72b 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1007,7 +1007,6 @@ static inline void unmap_shared_mapping_range(struct address_space *mapping, extern void truncate_pagecache(struct inode *inode, loff_t old, loff_t new); extern void truncate_setsize(struct inode *inode, loff_t newsize); -extern int vmtruncate(struct inode *inode, loff_t offset); void truncate_pagecache_range(struct inode *inode, loff_t offset, loff_t end); int truncate_inode_page(struct address_space *mapping, struct page *page); int generic_error_remove_page(struct address_space *mapping, struct page *page); -- cgit v1.2.3 From 471667391a92bf7bf2cd4ff31a3ad88e5dec934b Mon Sep 17 00:00:00 2001 From: Alessio Igor Bogani Date: Thu, 13 Dec 2012 12:22:39 +0100 Subject: vfs: Remove useless function prototypes Commit 8e22cc88d68ca1a46d7d582938f979eb640ed30f removes the (un)lock_super function definitions but forgets to remove their prototypes. Signed-off-by: Alessio Igor Bogani Signed-off-by: Al Viro --- include/linux/fs.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index a0c5ba57ffc5..05cd238ad941 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1445,10 +1445,6 @@ static inline void sb_start_intwrite(struct super_block *sb) extern bool inode_owner_or_capable(const struct inode *inode); -/* not quite ready to be deprecated, but... */ -extern void lock_super(struct super_block *); -extern void unlock_super(struct super_block *); - /* * VFS helper functions.. */ -- cgit v1.2.3 From b9d6ba94b875192ef5e2dab92d72beea33b83c3d Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Thu, 20 Dec 2012 14:59:40 -0500 Subject: vfs: add a retry_estale helper function to handle retries on ESTALE This function is expected to be called from path-based syscalls to help them decide whether to try the lookup and call again in the event that they got an -ESTALE return back on an earier try. Currently, we only retry the call once on an ESTALE error, but in the event that we decide that that's not enough in the future, we should be able to change the logic in this helper without too much effort. Signed-off-by: Jeff Layton Signed-off-by: Al Viro --- include/linux/namei.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include/linux') diff --git a/include/linux/namei.h b/include/linux/namei.h index 4bf19d8174ed..66542b644804 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -98,4 +98,20 @@ static inline void nd_terminate_link(void *name, size_t len, size_t maxlen) ((char *) name)[min(len, maxlen)] = '\0'; } +/** + * retry_estale - determine whether the caller should retry an operation + * @error: the error that would currently be returned + * @flags: flags being used for next lookup attempt + * + * Check to see if the error code was -ESTALE, and then determine whether + * to retry the call based on whether "flags" already has LOOKUP_REVAL set. + * + * Returns true if the caller should try the operation again. + */ +static inline bool +retry_estale(const long error, const unsigned int flags) +{ + return error == -ESTALE && !(flags & LOOKUP_REVAL); +} + #endif /* _LINUX_NAMEI_H */ -- cgit v1.2.3 From 1ac12b4b6d707937f9de6d09622823b2fd0c93ef Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 11 Dec 2012 12:10:06 -0500 Subject: vfs: turn is_dir argument to kern_path_create into a lookup_flags arg Where we can pass in LOOKUP_DIRECTORY or LOOKUP_REVAL. Any other flags passed in here are currently ignored. Signed-off-by: Jeff Layton Signed-off-by: Al Viro --- include/linux/namei.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/namei.h b/include/linux/namei.h index 66542b644804..e998c030061d 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -65,8 +65,8 @@ extern int user_path_at_empty(int, const char __user *, unsigned, struct path *, extern int kern_path(const char *, unsigned, struct path *); -extern struct dentry *kern_path_create(int, const char *, struct path *, int); -extern struct dentry *user_path_create(int, const char __user *, struct path *, int); +extern struct dentry *kern_path_create(int, const char *, struct path *, unsigned int); +extern struct dentry *user_path_create(int, const char __user *, struct path *, unsigned int); extern void done_path_create(struct path *, struct dentry *); extern struct dentry *kern_path_locked(const char *, struct path *); extern int vfs_path_lookup(struct dentry *, struct vfsmount *, -- cgit v1.2.3 From b66c5984017533316fd1951770302649baf1aa33 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Thu, 20 Dec 2012 15:05:16 -0800 Subject: exec: do not leave bprm->interp on stack If a series of scripts are executed, each triggering module loading via unprintable bytes in the script header, kernel stack contents can leak into the command line. Normally execution of binfmt_script and binfmt_misc happens recursively. However, when modules are enabled, and unprintable bytes exist in the bprm->buf, execution will restart after attempting to load matching binfmt modules. Unfortunately, the logic in binfmt_script and binfmt_misc does not expect to get restarted. They leave bprm->interp pointing to their local stack. This means on restart bprm->interp is left pointing into unused stack memory which can then be copied into the userspace argv areas. After additional study, it seems that both recursion and restart remains the desirable way to handle exec with scripts, misc, and modules. As such, we need to protect the changes to interp. This changes the logic to require allocation for any changes to the bprm->interp. To avoid adding a new kmalloc to every exec, the default value is left as-is. Only when passing through binfmt_script or binfmt_misc does an allocation take place. For a proof of concept, see DoTest.sh from: http://www.halfdog.net/Security/2012/LinuxKernelBinfmtScriptStackDataDisclosure/ Signed-off-by: Kees Cook Cc: halfdog Cc: P J P Cc: Alexander Viro Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/binfmts.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h index a4c2b565c835..bdf3965f0a29 100644 --- a/include/linux/binfmts.h +++ b/include/linux/binfmts.h @@ -112,6 +112,7 @@ extern int setup_arg_pages(struct linux_binprm * bprm, unsigned long stack_top, int executable_stack); extern int bprm_mm_init(struct linux_binprm *bprm); +extern int bprm_change_interp(char *interp, struct linux_binprm *bprm); extern int copy_strings_kernel(int argc, const char *const *argv, struct linux_binprm *bprm); extern int prepare_bprm_creds(struct linux_binprm *bprm); -- cgit v1.2.3 From c4e18497d8fd92eef2c6e7eadcc1a107ccd115ea Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Thu, 20 Dec 2012 15:05:42 -0800 Subject: linux/kernel.h: fix DIV_ROUND_CLOSEST with unsigned divisors Commit 263a523d18bc ("linux/kernel.h: Fix warning seen with W=1 due to change in DIV_ROUND_CLOSEST") fixes a warning seen with W=1 due to change in DIV_ROUND_CLOSEST. Unfortunately, the C compiler converts divide operations with unsigned divisors to unsigned, even if the dividend is signed and negative (for example, -10 / 5U = 858993457). The C standard says "If one operand has unsigned int type, the other operand is converted to unsigned int", so the compiler is not to blame. As a result, DIV_ROUND_CLOSEST(0, 2U) and similar operations now return bad values, since the automatic conversion of expressions such as "0 - 2U/2" to unsigned was not taken into account. Fix by checking for the divisor variable type when deciding which operation to perform. This fixes DIV_ROUND_CLOSEST(0, 2U), but still returns bad values for negative dividends divided by unsigned divisors. Mark the latter case as unsupported. One observed effect of this problem is that the s2c_hwmon driver reports a value of 4198403 instead of 0 if the ADC reads 0. Other impact is unpredictable. Problem is seen if the divisor is an unsigned variable or constant and the dividend is less than (divisor/2). Signed-off-by: Guenter Roeck Reported-by: Juergen Beisert Tested-by: Juergen Beisert Cc: Jean Delvare Cc: [3.7.x] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kernel.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index d140e8fb075f..c566927efcbd 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -77,13 +77,15 @@ /* * Divide positive or negative dividend by positive divisor and round - * to closest integer. Result is undefined for negative divisors. + * to closest integer. Result is undefined for negative divisors and + * for negative dividends if the divisor variable type is unsigned. */ #define DIV_ROUND_CLOSEST(x, divisor)( \ { \ typeof(x) __x = x; \ typeof(divisor) __d = divisor; \ - (((typeof(x))-1) > 0 || (__x) > 0) ? \ + (((typeof(x))-1) > 0 || \ + ((typeof(divisor))-1) > 0 || (__x) > 0) ? \ (((__x) + ((__d) / 2)) / (__d)) : \ (((__x) - ((__d) / 2)) / (__d)); \ } \ -- cgit v1.2.3 From 80f5ab097b87c86581cb9736a8e55c5a3047d4bb Mon Sep 17 00:00:00 2001 From: Shaun Ruffell Date: Sun, 19 Aug 2012 01:11:24 -0300 Subject: edac: edac_mc no longer deals with kobjects directly There are no more embedded kobjects in struct mem_ctl_info. Remove a header and a comment that does not reflect the code anymore. Signed-off-by: Shaun Ruffell Signed-off-by: Mauro Carvalho Chehab --- include/linux/edac.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/edac.h b/include/linux/edac.h index 1b8c02b36f76..4784213c819d 100644 --- a/include/linux/edac.h +++ b/include/linux/edac.h @@ -14,7 +14,6 @@ #include #include -#include #include #include #include -- cgit v1.2.3 From d54eaa5a0fde0a202e4e91f200f818edcef15bee Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Fri, 21 Dec 2012 20:23:36 +0000 Subject: dm: prepare to support WRITE SAME Allow targets to opt in to WRITE SAME support by setting 'num_write_same_requests' in the dm_target structure. A dm device will only advertise WRITE SAME support if all its targets and all its underlying devices support it. Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- include/linux/device-mapper.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 38d27a10aa5d..d1f6cd8486f2 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -205,6 +205,11 @@ struct dm_target { */ unsigned num_discard_requests; + /* + * The number of WRITE SAME requests that will be submitted to the target. + */ + unsigned num_write_same_requests; + /* target specific data */ void *private; -- cgit v1.2.3 From c0820cf5ad09522bdd9ff68e84841a09c9f339d8 Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Fri, 21 Dec 2012 20:23:38 +0000 Subject: dm: introduce per_bio_data Introduce a field per_bio_data_size in struct dm_target. Targets can set this field in the constructor. If a target sets this field to a non-zero value, "per_bio_data_size" bytes of auxiliary data are allocated for each bio submitted to the target. These data can be used for any purpose by the target and help us improve performance by removing some per-target mempools. Per-bio data is accessed with dm_per_bio_data. The argument data_size must be the same as the value per_bio_data_size in dm_target. If the target has a pointer to per_bio_data, it can get a pointer to the bio with dm_bio_from_per_bio_data() function (data_size must be the same as the value passed to dm_per_bio_data). Signed-off-by: Mikulas Patocka Signed-off-by: Alasdair G Kergon --- include/linux/device-mapper.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'include/linux') diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index d1f6cd8486f2..6f0e73b4a80d 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -210,6 +210,12 @@ struct dm_target { */ unsigned num_write_same_requests; + /* + * The minimum number of extra bytes allocated in each bio for the + * target to use. dm_per_bio_data returns the data location. + */ + unsigned per_bio_data_size; + /* target specific data */ void *private; @@ -246,6 +252,30 @@ struct dm_target_callbacks { int (*congested_fn) (struct dm_target_callbacks *, int); }; +/* + * For bio-based dm. + * One of these is allocated for each bio. + * This structure shouldn't be touched directly by target drivers. + * It is here so that we can inline dm_per_bio_data and + * dm_bio_from_per_bio_data + */ +struct dm_target_io { + struct dm_io *io; + struct dm_target *ti; + union map_info info; + struct bio clone; +}; + +static inline void *dm_per_bio_data(struct bio *bio, size_t data_size) +{ + return (char *)bio - offsetof(struct dm_target_io, clone) - data_size; +} + +static inline struct bio *dm_bio_from_per_bio_data(void *data, size_t data_size) +{ + return (struct bio *)((char *)data + data_size + offsetof(struct dm_target_io, clone)); +} + int dm_register_target(struct target_type *t); void dm_unregister_target(struct target_type *t); -- cgit v1.2.3 From ddbd658f6446a35e4d6ba84812fd71023320cae2 Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Fri, 21 Dec 2012 20:23:39 +0000 Subject: dm: move target request nr to dm_target_io This patch moves target_request_nr from map_info to dm_target_io and makes it accessible with dm_bio_get_target_request_nr. This patch is a preparation for the next patch that removes map_info. Signed-off-by: Mikulas Patocka Signed-off-by: Alasdair G Kergon --- include/linux/device-mapper.h | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 6f0e73b4a80d..eb96ef6fd8b7 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -23,7 +23,6 @@ typedef enum { STATUSTYPE_INFO, STATUSTYPE_TABLE } status_type_t; union map_info { void *ptr; unsigned long long ll; - unsigned target_request_nr; }; /* @@ -193,20 +192,21 @@ struct dm_target { * A number of zero-length barrier requests that will be submitted * to the target for the purpose of flushing cache. * - * The request number will be placed in union map_info->target_request_nr. + * The request number can be accessed with dm_bio_get_target_request_nr. * It is a responsibility of the target driver to remap these requests * to the real underlying devices. */ unsigned num_flush_requests; /* - * The number of discard requests that will be submitted to the - * target. map_info->request_nr is used just like num_flush_requests. + * The number of discard requests that will be submitted to the target. + * The request number can be accessed with dm_bio_get_target_request_nr. */ unsigned num_discard_requests; /* * The number of WRITE SAME requests that will be submitted to the target. + * The request number can be accessed with dm_bio_get_target_request_nr. */ unsigned num_write_same_requests; @@ -263,6 +263,7 @@ struct dm_target_io { struct dm_io *io; struct dm_target *ti; union map_info info; + unsigned target_request_nr; struct bio clone; }; @@ -276,6 +277,11 @@ static inline struct bio *dm_bio_from_per_bio_data(void *data, size_t data_size) return (struct bio *)((char *)data + data_size + offsetof(struct dm_target_io, clone)); } +static inline unsigned dm_bio_get_target_request_nr(const struct bio *bio) +{ + return container_of(bio, struct dm_target_io, clone)->target_request_nr; +} + int dm_register_target(struct target_type *t); void dm_unregister_target(struct target_type *t); -- cgit v1.2.3 From 7de3ee57da4b717050e79c9313a9bf66ccc72519 Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Fri, 21 Dec 2012 20:23:41 +0000 Subject: dm: remove map_info This patch removes map_info from bio-based device mapper targets. map_info is still used for request-based targets. Signed-off-by: Mikulas Patocka Signed-off-by: Alasdair G Kergon --- include/linux/device-mapper.h | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index eb96ef6fd8b7..bf6afa2fc432 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -45,8 +45,7 @@ typedef void (*dm_dtr_fn) (struct dm_target *ti); * = 1: simple remap complete * = 2: The target wants to push back the io */ -typedef int (*dm_map_fn) (struct dm_target *ti, struct bio *bio, - union map_info *map_context); +typedef int (*dm_map_fn) (struct dm_target *ti, struct bio *bio); typedef int (*dm_map_request_fn) (struct dm_target *ti, struct request *clone, union map_info *map_context); @@ -59,8 +58,7 @@ typedef int (*dm_map_request_fn) (struct dm_target *ti, struct request *clone, * 2 : The target wants to push back the io */ typedef int (*dm_endio_fn) (struct dm_target *ti, - struct bio *bio, int error, - union map_info *map_context); + struct bio *bio, int error); typedef int (*dm_request_endio_fn) (struct dm_target *ti, struct request *clone, int error, union map_info *map_context); -- cgit v1.2.3 From 30e6c9fa93cf3dbc7cc6df1d748ad25e4264545a Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 20 Dec 2012 17:25:08 +0000 Subject: net: devnet_rename_seq should be a seqcount Using a seqlock for devnet_rename_seq is not a good idea, as device_rename() can sleep. As we hold RTNL, we dont need a protection for writers, and only need a seqcount so that readers can catch a change done by a writer. Bug added in commit c91f6df2db4972d3 (sockopt: Change getsockopt() of SO_BINDTODEVICE to return an interface name) Reported-by: Dave Jones Signed-off-by: Eric Dumazet Cc: Brian Haley Signed-off-by: David S. Miller --- include/linux/netdevice.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 02e0f6b156c3..c599e4782d45 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1576,7 +1576,7 @@ extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev); extern rwlock_t dev_base_lock; /* Device list lock */ -extern seqlock_t devnet_rename_seq; /* Device rename lock */ +extern seqcount_t devnet_rename_seq; /* Device rename seq */ #define for_each_netdev(net, d) \ -- cgit v1.2.3 From 116c14c0191f3378e6567af296529ac287e85aa2 Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Fri, 21 Dec 2012 08:20:16 -0700 Subject: kvm: Fix memory slot generation updates Previous patch "kvm: Minor memory slot optimization" (b7f69c555ca43) overlooked the generation field of the memory slots. Re-using the original memory slots left us with with two slightly different memory slots with the same generation. To fix this, make update_memslots() take a new parameter to specify the last generation. This also makes generation management more explicit to avoid such problems in the future. Reported-by: Takuya Yoshikawa Signed-off-by: Alex Williamson Signed-off-by: Gleb Natapov --- include/linux/kvm_host.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 32fdc45ca35e..cbe0d683e2e5 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -428,7 +428,8 @@ void kvm_exit(void); void kvm_get_kvm(struct kvm *kvm); void kvm_put_kvm(struct kvm *kvm); -void update_memslots(struct kvm_memslots *slots, struct kvm_memory_slot *new); +void update_memslots(struct kvm_memslots *slots, struct kvm_memory_slot *new, + u64 last_generation); static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) { -- cgit v1.2.3 From b59320cc5a5e6ceaa17f0895ffbe0711ebad7adf Mon Sep 17 00:00:00 2001 From: Daniel Jeong Date: Mon, 17 Dec 2012 10:24:06 +0900 Subject: regulator: lp8755: new driver for LP8755 This patch is for new lp8755 regulator dirver and several unsed variables were deleted and then test was done. LP8755 : The LP8755 is a high performance power management unit.It contains six step-down DC-DC converters which can can be filexibly bundled together in multiphase converters as required by application. www.ti.com Signed-off-by: Daniel Jeong Signed-off-by: Mark Brown --- include/linux/platform_data/lp8755.h | 71 ++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 include/linux/platform_data/lp8755.h (limited to 'include/linux') diff --git a/include/linux/platform_data/lp8755.h b/include/linux/platform_data/lp8755.h new file mode 100644 index 000000000000..a7fd0776c9bf --- /dev/null +++ b/include/linux/platform_data/lp8755.h @@ -0,0 +1,71 @@ +/* + * LP8755 High Performance Power Management Unit Driver:System Interface Driver + * + * Copyright (C) 2012 Texas Instruments + * + * Author: Daniel(Geon Si) Jeong + * G.Shark Jeong + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#ifndef _LP8755_H +#define _LP8755_H + +#include + +#define LP8755_NAME "lp8755-regulator" +/* + *PWR FAULT : power fault detected + *OCP : over current protect activated + *OVP : over voltage protect activated + *TEMP_WARN : thermal warning + *TEMP_SHDN : thermal shutdonw detected + *I_LOAD : current measured + */ +#define LP8755_EVENT_PWR_FAULT REGULATOR_EVENT_FAIL +#define LP8755_EVENT_OCP REGULATOR_EVENT_OVER_CURRENT +#define LP8755_EVENT_OVP 0x10000 +#define LP8755_EVENT_TEMP_WARN 0x2000 +#define LP8755_EVENT_TEMP_SHDN REGULATOR_EVENT_OVER_TEMP +#define LP8755_EVENT_I_LOAD 0x40000 + +enum lp8755_bucks { + LP8755_BUCK0 = 0, + LP8755_BUCK1, + LP8755_BUCK2, + LP8755_BUCK3, + LP8755_BUCK4, + LP8755_BUCK5, + LP8755_BUCK_MAX, +}; + +/** + * multiphase configuration options + */ +enum lp8755_mphase_config { + MPHASE_CONF0, + MPHASE_CONF1, + MPHASE_CONF2, + MPHASE_CONF3, + MPHASE_CONF4, + MPHASE_CONF5, + MPHASE_CONF6, + MPHASE_CONF7, + MPHASE_CONF8, + MPHASE_CONF_MAX +}; + +/** + * struct lp8755_platform_data + * @mphase_type : Multiphase Switcher Configurations. + * @buck_data : buck0~6 init voltage in uV + */ +struct lp8755_platform_data { + int mphase; + struct regulator_init_data *buck_data[LP8755_BUCK_MAX]; +}; +#endif -- cgit v1.2.3 From c8520b4c5d25eb7b8b54f1ae9ba7da71375f2b2c Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Tue, 18 Dec 2012 09:30:10 +0800 Subject: regulator: core: Allow specify apply_[reg|bit] for regmap based voltage_sel operations Some DVM regulators needs to update apply_bit after setting vsel_reg to initiate voltage change on the output. This patch adds apply_reg and apply_bit to struct regulator_desc and update regulator_set_voltage_sel_regmap() to set apply_bit of apply_reg when apply_bit is set. Signed-off-by: Axel Lin Signed-off-by: Mark Brown --- include/linux/regulator/driver.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index d10bb0f39c5e..23070fd83872 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -193,6 +193,10 @@ enum regulator_type { * * @vsel_reg: Register for selector when using regulator_regmap_X_voltage_ * @vsel_mask: Mask for register bitfield used for selector + * @apply_reg: Register for initiate voltage change on the output when + * using regulator_set_voltage_sel_regmap + * @apply_bit: Register bitfield used for initiate voltage change on the + * output when using regulator_set_voltage_sel_regmap * @enable_reg: Register for control when using regmap enable/disable ops * @enable_mask: Mask for control when using regmap enable/disable ops * @@ -218,6 +222,8 @@ struct regulator_desc { unsigned int vsel_reg; unsigned int vsel_mask; + unsigned int apply_reg; + unsigned int apply_bit; unsigned int enable_reg; unsigned int enable_mask; unsigned int bypass_reg; -- cgit v1.2.3 From 7b1f62076bba10786d2118006ae68ac120cd6c56 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Wed, 7 Nov 2012 17:58:54 -0700 Subject: time: convert arch_gettimeoffset to a pointer Currently, whenever CONFIG_ARCH_USES_GETTIMEOFFSET is enabled, each arch core provides a single implementation of arch_gettimeoffset(). In many cases, different sub-architectures, different machines, or different timer providers exist, and so the arch ends up implementing arch_gettimeoffset() as a call-through-pointer anyway. Examples are ARM, Cris, M68K, and it's arguable that the remaining architectures, M32R and Blackfin, should be doing this anyway. Modify arch_gettimeoffset so that it itself is a function pointer, which the arch initializes. This will allow later changes to move the initialization of this function into individual machine support or timer drivers. This is particularly useful for code in drivers/clocksource which should rely on an arch-independant mechanism to register their implementation of arch_gettimeoffset(). This patch also converts the Cris architecture to set arch_gettimeoffset directly to the final implementation in time_init(), because Cris already had separate time_init() functions per sub-architecture. M68K and ARM are converted to set arch_gettimeoffset to the final implementation in later patches, because they already have function pointers in place for this purpose. Cc: Russell King Cc: Mike Frysinger Cc: Mikael Starvik Cc: Hirokazu Takata Cc: Thomas Gleixner Acked-by: Geert Uytterhoeven Acked-by: Jesper Nilsson Acked-by: John Stultz Signed-off-by: Stephen Warren --- include/linux/time.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/time.h b/include/linux/time.h index 4d358e9d10f1..05e32a72103c 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -142,9 +142,7 @@ void timekeeping_inject_sleeptime(struct timespec *delta); * finer then tick granular time. */ #ifdef CONFIG_ARCH_USES_GETTIMEOFFSET -extern u32 arch_gettimeoffset(void); -#else -static inline u32 arch_gettimeoffset(void) { return 0; } +extern u32 (*arch_gettimeoffset)(void); #endif extern void do_gettimeofday(struct timeval *tv); -- cgit v1.2.3 From 6bb27d7349db51b50c40534710fe164ca0d58902 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Thu, 8 Nov 2012 12:40:59 -0700 Subject: ARM: delete struct sys_timer Now that the only field in struct sys_timer is .init, delete the struct, and replace the machine descriptor .timer field with the initialization function itself. This will enable moving timer drivers into drivers/clocksource without having to place a public prototype of each struct sys_timer object into include/linux; the intent is to create a single of_clocksource_init() function that determines which timer driver to initialize by scanning the device dtree, much like the proposed irqchip_init() at: http://www.spinics.net/lists/arm-kernel/msg203686.html Includes mach-omap2 fixes from Igor Grinberg. Tested-by: Robert Jarzmik Signed-off-by: Stephen Warren --- include/linux/bcm2835_timer.h | 2 +- include/linux/dw_apb_timer.h | 2 +- include/linux/sunxi_timer.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/bcm2835_timer.h b/include/linux/bcm2835_timer.h index 25680fe0903c..ca17aa817006 100644 --- a/include/linux/bcm2835_timer.h +++ b/include/linux/bcm2835_timer.h @@ -17,6 +17,6 @@ #include -extern struct sys_timer bcm2835_timer; +extern void bcm2835_timer_init(void); #endif diff --git a/include/linux/dw_apb_timer.h b/include/linux/dw_apb_timer.h index 1148575fd134..dd755ce2a5eb 100644 --- a/include/linux/dw_apb_timer.h +++ b/include/linux/dw_apb_timer.h @@ -53,5 +53,5 @@ void dw_apb_clocksource_start(struct dw_apb_clocksource *dw_cs); cycle_t dw_apb_clocksource_read(struct dw_apb_clocksource *dw_cs); void dw_apb_clocksource_unregister(struct dw_apb_clocksource *dw_cs); -extern struct sys_timer dw_apb_timer; +extern void dw_apb_timer_init(void); #endif /* __DW_APB_TIMER_H__ */ diff --git a/include/linux/sunxi_timer.h b/include/linux/sunxi_timer.h index b9165bba6e61..18081787e5f3 100644 --- a/include/linux/sunxi_timer.h +++ b/include/linux/sunxi_timer.h @@ -19,6 +19,6 @@ #include -extern struct sys_timer sunxi_timer; +void sunxi_timer_init(void); #endif -- cgit v1.2.3 From 53e872681fed6a43047e71bf927f77d06f467988 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Tue, 25 Dec 2012 13:29:52 -0500 Subject: ext4: fix deadlock in journal_unmap_buffer() We cannot wait for transaction commit in journal_unmap_buffer() because we hold page lock which ranks below transaction start. We solve the issue by bailing out of journal_unmap_buffer() and jbd2_journal_invalidatepage() with -EBUSY. Caller is then responsible for waiting for transaction commit to finish and try invalidation again. Since the issue can happen only for page stradding i_size, it is simple enough to manually call jbd2_journal_invalidatepage() for such page from ext4_setattr(), check the return value and wait if necessary. Signed-off-by: Jan Kara Signed-off-by: "Theodore Ts'o" --- include/linux/jbd2.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index 1be23d9fdacb..e30b66346942 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -1098,7 +1098,7 @@ void jbd2_journal_set_triggers(struct buffer_head *, extern int jbd2_journal_dirty_metadata (handle_t *, struct buffer_head *); extern int jbd2_journal_forget (handle_t *, struct buffer_head *); extern void journal_sync_buffer (struct buffer_head *); -extern void jbd2_journal_invalidatepage(journal_t *, +extern int jbd2_journal_invalidatepage(journal_t *, struct page *, unsigned long); extern int jbd2_journal_try_to_free_buffers(journal_t *, struct page *, gfp_t); extern int jbd2_journal_stop(handle_t *); -- cgit v1.2.3 From 08b60f8438879a84246d7debded31c9cb7aea6e4 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Mon, 24 Dec 2012 11:14:58 -0700 Subject: namei.h: include errno.h This solves: In file included from fs/ext3/symlink.c:20:0: include/linux/namei.h: In function 'retry_estale': include/linux/namei.h:114:19: error: 'ESTALE' undeclared (first use in this function) Signed-off-by: Stephen Warren Signed-off-by: Al Viro --- include/linux/namei.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/namei.h b/include/linux/namei.h index e998c030061d..5a5ff57ceed4 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -2,6 +2,7 @@ #define _LINUX_NAMEI_H #include +#include #include #include -- cgit v1.2.3 From c876ad7682155958d0c9c27afe9017925c230d64 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 21 Dec 2012 20:27:12 -0800 Subject: pidns: Stop pid allocation when init dies Oleg pointed out that in a pid namespace the sequence. - pid 1 becomes a zombie - setns(thepidns), fork,... - reaping pid 1. - The injected processes exiting. Can lead to processes attempting access their child reaper and instead following a stale pointer. That waitpid for init can return before all of the processes in the pid namespace have exited is also unfortunate. Avoid these problems by disabling the allocation of new pids in a pid namespace when init dies, instead of when the last process in a pid namespace is reaped. Pointed-out-by: Oleg Nesterov Reviewed-by: Oleg Nesterov Signed-off-by: "Eric W. Biederman" --- include/linux/pid.h | 1 + include/linux/pid_namespace.h | 4 +++- 2 files changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pid.h b/include/linux/pid.h index b152d44fb181..2381c973d897 100644 --- a/include/linux/pid.h +++ b/include/linux/pid.h @@ -121,6 +121,7 @@ int next_pidmap(struct pid_namespace *pid_ns, unsigned int last); extern struct pid *alloc_pid(struct pid_namespace *ns); extern void free_pid(struct pid *pid); +extern void disable_pid_allocation(struct pid_namespace *ns); /* * ns_of_pid() returns the pid namespace in which the specified pid was diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h index bf285999273a..215e5e3dda10 100644 --- a/include/linux/pid_namespace.h +++ b/include/linux/pid_namespace.h @@ -21,7 +21,7 @@ struct pid_namespace { struct kref kref; struct pidmap pidmap[PIDMAP_ENTRIES]; int last_pid; - int nr_hashed; + unsigned int nr_hashed; struct task_struct *child_reaper; struct kmem_cache *pid_cachep; unsigned int level; @@ -42,6 +42,8 @@ struct pid_namespace { extern struct pid_namespace init_pid_ns; +#define PIDNS_HASH_ADDING (1U << 31) + #ifdef CONFIG_PID_NS static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns) { -- cgit v1.2.3 From 812089e01b9f65f90fc8fc670d8cce72a0e01fbb Mon Sep 17 00:00:00 2001 From: Andy Lutomirski Date: Sat, 1 Dec 2012 12:37:20 -0800 Subject: PCI: Reduce Ricoh 0xe822 SD card reader base clock frequency to 50MHz Otherwise it fails like this on cards like the Transcend 16GB SDHC card: mmc0: new SDHC card at address b368 mmcblk0: mmc0:b368 SDC 15.0 GiB mmcblk0: error -110 sending status command, retrying mmcblk0: error -84 transferring data, sector 0, nr 8, cmd response 0x900, card status 0xb0 Tested on my Lenovo x200 laptop. [bhelgaas: changelog] Signed-off-by: Andy Lutomirski Signed-off-by: Bjorn Helgaas Acked-by: Chris Ball CC: Manoj Iyer CC: stable@vger.kernel.org --- include/linux/pci_ids.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 0f8447376ddb..0eb65796bcb9 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -1568,6 +1568,7 @@ #define PCI_DEVICE_ID_RICOH_RL5C476 0x0476 #define PCI_DEVICE_ID_RICOH_RL5C478 0x0478 #define PCI_DEVICE_ID_RICOH_R5C822 0x0822 +#define PCI_DEVICE_ID_RICOH_R5CE822 0xe822 #define PCI_DEVICE_ID_RICOH_R5CE823 0xe823 #define PCI_DEVICE_ID_RICOH_R5C832 0x0832 #define PCI_DEVICE_ID_RICOH_R5C843 0x0843 -- cgit v1.2.3 From ad4b3fb7ff9940bcdb1e4cd62bd189d10fa636ba Mon Sep 17 00:00:00 2001 From: Christoffer Dall Date: Fri, 21 Dec 2012 13:03:50 -0500 Subject: mm: Fix PageHead when !CONFIG_PAGEFLAGS_EXTENDED Unfortunately with !CONFIG_PAGEFLAGS_EXTENDED, (!PageHead) is false, and (PageHead) is true, for tail pages. If this is indeed the intended behavior, which I doubt because it breaks cache cleaning on some ARM systems, then the nomenclature is highly problematic. This patch makes sure PageHead is only true for head pages and PageTail is only true for tail pages, and neither is true for non-compound pages. [ This buglet seems ancient - seems to have been introduced back in Apr 2008 in commit 6a1e7f777f61: "pageflags: convert to the use of new macros". And the reason nobody noticed is because the PageHead() tests are almost all about just sanity-checking, and only used on pages that are actual page heads. The fact that the old code returned true for tail pages too was thus not really noticeable. - Linus ] Signed-off-by: Christoffer Dall Acked-by: Andrea Arcangeli Cc: Andrew Morton Cc: Will Deacon Cc: Steve Capper Cc: Christoph Lameter Cc: stable@kernel.org # 2.6.26+ Signed-off-by: Linus Torvalds --- include/linux/page-flags.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index b5d13841604e..70473da47b3f 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -362,7 +362,7 @@ static inline void ClearPageCompound(struct page *page) * pages on the LRU and/or pagecache. */ TESTPAGEFLAG(Compound, compound) -__PAGEFLAG(Head, compound) +__SETPAGEFLAG(Head, compound) __CLEARPAGEFLAG(Head, compound) /* * PG_reclaim is used in combination with PG_compound to mark the @@ -374,8 +374,14 @@ __PAGEFLAG(Head, compound) * PG_compound & PG_reclaim => Tail page * PG_compound & ~PG_reclaim => Head page */ +#define PG_head_mask ((1L << PG_compound)) #define PG_head_tail_mask ((1L << PG_compound) | (1L << PG_reclaim)) +static inline int PageHead(struct page *page) +{ + return ((page->flags & PG_head_tail_mask) == PG_head_mask); +} + static inline int PageTail(struct page *page) { return ((page->flags & PG_head_tail_mask) == PG_head_tail_mask); -- cgit v1.2.3 From 4bf84c35c65f36a344fb7a6cde6274df4120efb8 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Thu, 27 Dec 2012 23:49:37 +0000 Subject: net: add change_carrier netdev op This allows a driver to register change_carrier callback which will be called whenever user will like to change carrier state. This is useful for devices like dummy, gre, team and so on. Signed-off-by: Jiri Pirko Acked-by: Flavio Leitner Signed-off-by: David S. Miller --- include/linux/netdevice.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index c599e4782d45..0e1b92a0c1ec 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -891,6 +891,14 @@ struct netdev_fcoe_hbainfo { * int (*ndo_bridge_setlink)(struct net_device *dev, struct nlmsghdr *nlh) * int (*ndo_bridge_getlink)(struct sk_buff *skb, u32 pid, u32 seq, * struct net_device *dev) + * + * int (*ndo_change_carrier)(struct net_device *dev, bool new_carrier); + * Called to change device carrier. Soft-devices (like dummy, team, etc) + * which do not represent real hardware may define this to allow their + * userspace components to manage their virtual carrier state. Devices + * that determine carrier state from physical hardware properties (eg + * network cables) or protocol-dependent mechanisms (eg + * USB_CDC_NOTIFY_NETWORK_CONNECTION) should NOT implement this function. */ struct net_device_ops { int (*ndo_init)(struct net_device *dev); @@ -1008,6 +1016,8 @@ struct net_device_ops { int (*ndo_bridge_getlink)(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev); + int (*ndo_change_carrier)(struct net_device *dev, + bool new_carrier); }; /* @@ -2194,6 +2204,8 @@ extern int dev_set_mtu(struct net_device *, int); extern void dev_set_group(struct net_device *, int); extern int dev_set_mac_address(struct net_device *, struct sockaddr *); +extern int dev_change_carrier(struct net_device *, + bool new_carrier); extern int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, struct netdev_queue *txq); -- cgit v1.2.3 From 2681128f0ced8aa4e66f221197e183cc16d244fe Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sat, 29 Dec 2012 16:02:43 +0000 Subject: veth: reduce stat overhead veth stats are a bit bloated. There is no need to account transmit and receive stats, since they are absolutely symmetric. Also use a per device atomic64_t for the dropped counter, as it should never be used in fast path. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/netdevice.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 0e1b92a0c1ec..6835b5837f93 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1284,6 +1284,7 @@ struct net_device { struct pcpu_lstats __percpu *lstats; /* loopback stats */ struct pcpu_tstats __percpu *tstats; /* tunnel stats */ struct pcpu_dstats __percpu *dstats; /* dummy stats */ + struct pcpu_vstats __percpu *vstats; /* veth stats */ }; /* GARP */ struct garp_port __rcu *garp_port; -- cgit v1.2.3 From 2ac902ce17f9dfa0d4d1f0818be147b5d2515fb7 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 19 Dec 2012 14:51:55 +0000 Subject: regmap: flat: Add flat cache type While for I2C and SPI devices the overhead of using rbtree for devices with only one block of registers is negligible the same isn't always going to be true for MMIO devices where the I/O costs are very much lower. Cater for these devices by adding a simple flat array type for them where the lookups are simple array accesses, taking us right back to the original ASoC cache implementation. Thanks to Magnus Damm for the discussion which prompted this. Signed-off-by: Mark Brown --- include/linux/regmap.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index b7e95bf942c9..390d879d473a 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -28,7 +28,8 @@ struct regmap_range_cfg; enum regcache_type { REGCACHE_NONE, REGCACHE_RBTREE, - REGCACHE_COMPRESSED + REGCACHE_COMPRESSED, + REGCACHE_FLAT, }; /** -- cgit v1.2.3 From a7a88b23737095e6c18a20c5d4eef9e25ec5b829 Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Wed, 2 Jan 2013 02:04:23 -0800 Subject: mempolicy: remove arg from mpol_parse_str, mpol_to_str Remove the unused argument (formerly no_context) from mpol_parse_str() and from mpol_to_str(). Signed-off-by: Hugh Dickins Signed-off-by: Linus Torvalds --- include/linux/mempolicy.h | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h index 9adc270de7ef..92bc9988a180 100644 --- a/include/linux/mempolicy.h +++ b/include/linux/mempolicy.h @@ -165,11 +165,10 @@ int do_migrate_pages(struct mm_struct *mm, const nodemask_t *from, #ifdef CONFIG_TMPFS -extern int mpol_parse_str(char *str, struct mempolicy **mpol, int no_context); +extern int mpol_parse_str(char *str, struct mempolicy **mpol); #endif -extern int mpol_to_str(char *buffer, int maxlen, struct mempolicy *pol, - int no_context); +extern int mpol_to_str(char *buffer, int maxlen, struct mempolicy *pol); /* Check if a vma is migratable */ static inline int vma_migratable(struct vm_area_struct *vma) @@ -296,15 +295,13 @@ static inline void check_highest_zone(int k) } #ifdef CONFIG_TMPFS -static inline int mpol_parse_str(char *str, struct mempolicy **mpol, - int no_context) +static inline int mpol_parse_str(char *str, struct mempolicy **mpol) { return 1; /* error */ } #endif -static inline int mpol_to_str(char *buffer, int maxlen, struct mempolicy *pol, - int no_context) +static inline int mpol_to_str(char *buffer, int maxlen, struct mempolicy *pol) { return 0; } -- cgit v1.2.3 From ae278a935f086775e8ae31a8ec9f7224ea25ea3c Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Mon, 19 Nov 2012 16:41:20 -0700 Subject: clocksource: add common of_clksrc_init() function It is desirable to move all clocksource drivers to drivers/clocksource, yet each requires its own initialization function. We'd rather not pollute with a header for each function. Instead, create a single of_clksrc_init() function which will determine which clocksource driver to initialize based on device tree. Based on a similar patch for drivers/irqchip by Thomas Petazzoni. Signed-off-by: Stephen Warren --- include/linux/clocksource.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h index 4dceaf8ae152..7944f14ea947 100644 --- a/include/linux/clocksource.h +++ b/include/linux/clocksource.h @@ -332,4 +332,13 @@ extern int clocksource_mmio_init(void __iomem *, const char *, extern int clocksource_i8253_init(void); +#ifdef CONFIG_CLKSRC_OF +extern void clocksource_of_init(void); + +#define CLOCKSOURCE_OF_DECLARE(name, compat, fn) \ + static const struct of_device_id __clksrc_of_table_##name \ + __used __section(__clksrc_of_table) \ + = { .compatible = compat, .data = fn }; +#endif + #endif /* _LINUX_CLOCKSOURCE_H */ -- cgit v1.2.3 From 42288fe366c4f1ce7522bc9f27d0bc2a81c55264 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Fri, 21 Dec 2012 23:10:25 +0000 Subject: mm: mempolicy: Convert shared_policy mutex to spinlock Sasha was fuzzing with trinity and reported the following problem: BUG: sleeping function called from invalid context at kernel/mutex.c:269 in_atomic(): 1, irqs_disabled(): 0, pid: 6361, name: trinity-main 2 locks held by trinity-main/6361: #0: (&mm->mmap_sem){++++++}, at: [] __do_page_fault+0x1e4/0x4f0 #1: (&(&mm->page_table_lock)->rlock){+.+...}, at: [] handle_pte_fault+0x3f7/0x6a0 Pid: 6361, comm: trinity-main Tainted: G W 3.7.0-rc2-next-20121024-sasha-00001-gd95ef01-dirty #74 Call Trace: __might_sleep+0x1c3/0x1e0 mutex_lock_nested+0x29/0x50 mpol_shared_policy_lookup+0x2e/0x90 shmem_get_policy+0x2e/0x30 get_vma_policy+0x5a/0xa0 mpol_misplaced+0x41/0x1d0 handle_pte_fault+0x465/0x6a0 This was triggered by a different version of automatic NUMA balancing but in theory the current version is vunerable to the same problem. do_numa_page -> numa_migrate_prep -> mpol_misplaced -> get_vma_policy -> shmem_get_policy It's very unlikely this will happen as shared pages are not marked pte_numa -- see the page_mapcount() check in change_pte_range() -- but it is possible. To address this, this patch restores sp->lock as originally implemented by Kosaki Motohiro. In the path where get_vma_policy() is called, it should not be calling sp_alloc() so it is not necessary to treat the PTL specially. Signed-off-by: KOSAKI Motohiro Tested-by: KOSAKI Motohiro Signed-off-by: Mel Gorman Signed-off-by: Linus Torvalds --- include/linux/mempolicy.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h index 92bc9988a180..0d7df39a5885 100644 --- a/include/linux/mempolicy.h +++ b/include/linux/mempolicy.h @@ -123,7 +123,7 @@ struct sp_node { struct shared_policy { struct rb_root root; - struct mutex mutex; + spinlock_t lock; }; void mpol_shared_policy_init(struct shared_policy *sp, struct mempolicy *mpol); -- cgit v1.2.3 From 3d33fcc11bdd11b6949cf5c406726a094395dc4f Mon Sep 17 00:00:00 2001 From: David Howells Date: Wed, 2 Jan 2013 15:12:55 +0000 Subject: UAPI: Remove empty Kbuild files Empty files can get deleted by the patch program, so remove empty Kbuild files and their links from the parent Kbuilds. Signed-off-by: David Howells Signed-off-by: Linus Torvalds --- include/linux/Kbuild | 5 ----- include/linux/hdlc/Kbuild | 0 include/linux/hsi/Kbuild | 0 include/linux/raid/Kbuild | 0 include/linux/usb/Kbuild | 0 5 files changed, 5 deletions(-) delete mode 100644 include/linux/Kbuild delete mode 100644 include/linux/hdlc/Kbuild delete mode 100644 include/linux/hsi/Kbuild delete mode 100644 include/linux/raid/Kbuild delete mode 100644 include/linux/usb/Kbuild (limited to 'include/linux') diff --git a/include/linux/Kbuild b/include/linux/Kbuild deleted file mode 100644 index 7fe2dae251e5..000000000000 --- a/include/linux/Kbuild +++ /dev/null @@ -1,5 +0,0 @@ -header-y += dvb/ -header-y += hdlc/ -header-y += hsi/ -header-y += raid/ -header-y += usb/ diff --git a/include/linux/hdlc/Kbuild b/include/linux/hdlc/Kbuild deleted file mode 100644 index e69de29bb2d1..000000000000 diff --git a/include/linux/hsi/Kbuild b/include/linux/hsi/Kbuild deleted file mode 100644 index e69de29bb2d1..000000000000 diff --git a/include/linux/raid/Kbuild b/include/linux/raid/Kbuild deleted file mode 100644 index e69de29bb2d1..000000000000 diff --git a/include/linux/usb/Kbuild b/include/linux/usb/Kbuild deleted file mode 100644 index e69de29bb2d1..000000000000 -- cgit v1.2.3 From 4d02c58eb1f19433cb852b2bde41c44849691614 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 17 Dec 2012 15:26:55 -0700 Subject: HID: introduce helper for hid_driver boilerplate Introduce the module_hid_driver macro which is a convenience macro for HID driver modules similar to module_usb_driver. It is intended to be used by drivers with init/exit sections that do nothing but register/unregister the HID driver. Signed-off-by: H Hartley Sweeten Signed-off-by: Jiri Kosina --- include/linux/hid.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/hid.h b/include/linux/hid.h index 7330a0fef0c0..d6c71a674310 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -700,6 +700,18 @@ extern int __must_check __hid_register_driver(struct hid_driver *, extern void hid_unregister_driver(struct hid_driver *); +/** + * module_hid_driver() - Helper macro for registering a HID driver + * @__hid_driver: hid_driver struct + * + * Helper macro for HID drivers which do not do anything special in module + * init/exit. This eliminates a lot of boilerplate. Each module may only + * use this macro once, and calling it replaces module_init() and module_exit() + */ +#define module_hid_driver(__hid_driver) \ + module_driver(__hid_driver, hid_register_driver, \ + hid_unregister_driver) + extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32); extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report); extern int hidinput_connect(struct hid_device *hid, unsigned int force); -- cgit v1.2.3 From d463f4719a2fa883bc0bb1fb67e6fea2307aa6df Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 17 Dec 2012 15:27:33 -0700 Subject: HID: hid.h: remove unused hid_generic_{init,exit} prototypes These functions are not defined. Remove the extern declarations. Signed-off-by: H Hartley Sweeten Signed-off-by: Jiri Kosina --- include/linux/hid.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hid.h b/include/linux/hid.h index d6c71a674310..828726c70503 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -884,9 +884,6 @@ static inline int hid_hw_power(struct hid_device *hdev, int level) int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size, int interrupt); -extern int hid_generic_init(void); -extern void hid_generic_exit(void); - /* HID quirks API */ u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct); int usbhid_quirks_init(char **quirks_param); -- cgit v1.2.3 From 0f6dfcee2e081f47a3e97cb8984fb4d62217e6f7 Mon Sep 17 00:00:00 2001 From: Vladimir Kondratiev Date: Tue, 18 Dec 2012 09:55:33 +0200 Subject: wireless: more 'capability info' bits define bits for 'capability info', as in recent spec edition IEEE802.11-2012 Also, add mask for 2-bit field 'bss type', as it is in 802.11ad Signed-off-by: Vladimir Kondratiev Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index f0859cc73861..09879eb24380 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -1311,16 +1311,21 @@ struct ieee80211_vht_operation { #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8) #define WLAN_CAPABILITY_QOS (1<<9) #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10) +#define WLAN_CAPABILITY_APSD (1<<11) +#define WLAN_CAPABILITY_RADIO_MEASURE (1<<12) #define WLAN_CAPABILITY_DSSS_OFDM (1<<13) +#define WLAN_CAPABILITY_DEL_BACK (1<<14) +#define WLAN_CAPABILITY_IMM_BACK (1<<15) /* DMG (60gHz) 802.11ad */ /* type - bits 0..1 */ +#define WLAN_CAPABILITY_DMG_TYPE_MASK (3<<0) #define WLAN_CAPABILITY_DMG_TYPE_IBSS (1<<0) /* Tx by: STA */ #define WLAN_CAPABILITY_DMG_TYPE_PBSS (2<<0) /* Tx by: PCP */ #define WLAN_CAPABILITY_DMG_TYPE_AP (3<<0) /* Tx by: AP */ #define WLAN_CAPABILITY_DMG_CBAP_ONLY (1<<2) -#define WLAN_CAPABILITY_DMG_CBAP_SOURCE (1<<3) +#define WLAN_CAPABILITY_DMG_CBAP_SOURCE (1<<3) #define WLAN_CAPABILITY_DMG_PRIVACY (1<<4) #define WLAN_CAPABILITY_DMG_ECPAC (1<<5) -- cgit v1.2.3 From 598a5938e04ce30d837dca4c3c3326c69435342a Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 28 Dec 2012 12:00:40 +0100 Subject: wireless: use __packed in ieee80211.h Use __packed instead of __attribute__((packed)). Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 84 +++++++++++++++++++++++------------------------ 1 file changed, 42 insertions(+), 42 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 09879eb24380..5db76ebe8810 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -180,7 +180,7 @@ struct ieee80211_hdr { u8 addr3[6]; __le16 seq_ctrl; u8 addr4[6]; -} __attribute__ ((packed)); +} __packed; struct ieee80211_hdr_3addr { __le16 frame_control; @@ -189,7 +189,7 @@ struct ieee80211_hdr_3addr { u8 addr2[6]; u8 addr3[6]; __le16 seq_ctrl; -} __attribute__ ((packed)); +} __packed; struct ieee80211_qos_hdr { __le16 frame_control; @@ -199,7 +199,7 @@ struct ieee80211_qos_hdr { u8 addr3[6]; __le16 seq_ctrl; __le16 qos_ctrl; -} __attribute__ ((packed)); +} __packed; /** * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set @@ -576,7 +576,7 @@ struct ieee80211s_hdr { __le32 seqnum; u8 eaddr1[6]; u8 eaddr2[6]; -} __attribute__ ((packed)); +} __packed; /* Mesh flags */ #define MESH_FLAGS_AE_A4 0x1 @@ -614,7 +614,7 @@ struct ieee80211_quiet_ie { u8 period; __le16 duration; __le16 offset; -} __attribute__ ((packed)); +} __packed; /** * struct ieee80211_msrment_ie @@ -626,7 +626,7 @@ struct ieee80211_msrment_ie { u8 mode; u8 type; u8 request[0]; -} __attribute__ ((packed)); +} __packed; /** * struct ieee80211_channel_sw_ie @@ -637,7 +637,7 @@ struct ieee80211_channel_sw_ie { u8 mode; u8 new_ch_num; u8 count; -} __attribute__ ((packed)); +} __packed; /** * struct ieee80211_tim @@ -650,7 +650,7 @@ struct ieee80211_tim_ie { u8 bitmap_ctrl; /* variable size: 1 - 251 bytes */ u8 virtual_map[1]; -} __attribute__ ((packed)); +} __packed; /** * struct ieee80211_meshconf_ie @@ -665,7 +665,7 @@ struct ieee80211_meshconf_ie { u8 meshconf_auth; u8 meshconf_form; u8 meshconf_cap; -} __attribute__ ((packed)); +} __packed; /** * enum mesh_config_capab_flags - Mesh Configuration IE capability field flags @@ -695,7 +695,7 @@ struct ieee80211_rann_ie { __le32 rann_seq; __le32 rann_interval; __le32 rann_metric; -} __attribute__ ((packed)); +} __packed; enum ieee80211_rann_flags { RANN_FLAG_IS_GATE = 1 << 0, @@ -717,33 +717,33 @@ struct ieee80211_mgmt { __le16 status_code; /* possibly followed by Challenge text */ u8 variable[0]; - } __attribute__ ((packed)) auth; + } __packed auth; struct { __le16 reason_code; - } __attribute__ ((packed)) deauth; + } __packed deauth; struct { __le16 capab_info; __le16 listen_interval; /* followed by SSID and Supported rates */ u8 variable[0]; - } __attribute__ ((packed)) assoc_req; + } __packed assoc_req; struct { __le16 capab_info; __le16 status_code; __le16 aid; /* followed by Supported rates */ u8 variable[0]; - } __attribute__ ((packed)) assoc_resp, reassoc_resp; + } __packed assoc_resp, reassoc_resp; struct { __le16 capab_info; __le16 listen_interval; u8 current_ap[6]; /* followed by SSID and Supported rates */ u8 variable[0]; - } __attribute__ ((packed)) reassoc_req; + } __packed reassoc_req; struct { __le16 reason_code; - } __attribute__ ((packed)) disassoc; + } __packed disassoc; struct { __le64 timestamp; __le16 beacon_int; @@ -751,11 +751,11 @@ struct ieee80211_mgmt { /* followed by some of SSID, Supported rates, * FH Params, DS Params, CF Params, IBSS Params, TIM */ u8 variable[0]; - } __attribute__ ((packed)) beacon; + } __packed beacon; struct { /* only variable items: SSID, Supported rates */ u8 variable[0]; - } __attribute__ ((packed)) probe_req; + } __packed probe_req; struct { __le64 timestamp; __le16 beacon_int; @@ -763,7 +763,7 @@ struct ieee80211_mgmt { /* followed by some of SSID, Supported rates, * FH Params, DS Params, CF Params, IBSS Params */ u8 variable[0]; - } __attribute__ ((packed)) probe_resp; + } __packed probe_resp; struct { u8 category; union { @@ -772,55 +772,55 @@ struct ieee80211_mgmt { u8 dialog_token; u8 status_code; u8 variable[0]; - } __attribute__ ((packed)) wme_action; + } __packed wme_action; struct{ u8 action_code; u8 element_id; u8 length; struct ieee80211_channel_sw_ie sw_elem; - } __attribute__((packed)) chan_switch; + } __packed chan_switch; struct{ u8 action_code; u8 dialog_token; u8 element_id; u8 length; struct ieee80211_msrment_ie msr_elem; - } __attribute__((packed)) measurement; + } __packed measurement; struct{ u8 action_code; u8 dialog_token; __le16 capab; __le16 timeout; __le16 start_seq_num; - } __attribute__((packed)) addba_req; + } __packed addba_req; struct{ u8 action_code; u8 dialog_token; __le16 status; __le16 capab; __le16 timeout; - } __attribute__((packed)) addba_resp; + } __packed addba_resp; struct{ u8 action_code; __le16 params; __le16 reason_code; - } __attribute__((packed)) delba; + } __packed delba; struct { u8 action_code; u8 variable[0]; - } __attribute__((packed)) self_prot; + } __packed self_prot; struct{ u8 action_code; u8 variable[0]; - } __attribute__((packed)) mesh_action; + } __packed mesh_action; struct { u8 action; u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN]; - } __attribute__ ((packed)) sa_query; + } __packed sa_query; struct { u8 action; u8 smps_control; - } __attribute__ ((packed)) ht_smps; + } __packed ht_smps; struct { u8 action_code; u8 dialog_token; @@ -828,9 +828,9 @@ struct ieee80211_mgmt { u8 variable[0]; } __packed tdls_discover_resp; } u; - } __attribute__ ((packed)) action; + } __packed action; } u; -} __attribute__ ((packed)); +} __packed; /* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */ #define BSS_MEMBERSHIP_SELECTOR_HT_PHY 127 @@ -846,7 +846,7 @@ struct ieee80211_mmie { __le16 key_id; u8 sequence_number[6]; u8 mic[8]; -} __attribute__ ((packed)); +} __packed; struct ieee80211_vendor_ie { u8 element_id; @@ -861,20 +861,20 @@ struct ieee80211_rts { __le16 duration; u8 ra[6]; u8 ta[6]; -} __attribute__ ((packed)); +} __packed; struct ieee80211_cts { __le16 frame_control; __le16 duration; u8 ra[6]; -} __attribute__ ((packed)); +} __packed; struct ieee80211_pspoll { __le16 frame_control; __le16 aid; u8 bssid[6]; u8 ta[6]; -} __attribute__ ((packed)); +} __packed; /* TDLS */ @@ -967,7 +967,7 @@ struct ieee80211_bar { __u8 ta[6]; __le16 control; __le16 start_seq_num; -} __attribute__((packed)); +} __packed; /* 802.11 BAR control masks */ #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL 0x0000 @@ -992,7 +992,7 @@ struct ieee80211_mcs_info { __le16 rx_highest; u8 tx_params; u8 reserved[3]; -} __attribute__((packed)); +} __packed; /* 802.11n HT capability MSC set */ #define IEEE80211_HT_MCS_RX_HIGHEST_MASK 0x3ff @@ -1031,7 +1031,7 @@ struct ieee80211_ht_cap { __le16 extended_ht_cap_info; __le32 tx_BF_cap_info; u8 antenna_selection_info; -} __attribute__ ((packed)); +} __packed; /* 802.11n HT capabilities masks (for cap_info) */ #define IEEE80211_HT_CAP_LDPC_CODING 0x0001 @@ -1102,7 +1102,7 @@ struct ieee80211_ht_operation { __le16 operation_mode; __le16 stbc_param; u8 basic_set[16]; -} __attribute__ ((packed)); +} __packed; /* for ht_param */ #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET 0x03 @@ -1839,14 +1839,14 @@ struct ieee80211_country_ie_triplet { u8 first_channel; u8 num_channels; s8 max_power; - } __attribute__ ((packed)) chans; + } __packed chans; struct { u8 reg_extension_id; u8 reg_class; u8 coverage_class; - } __attribute__ ((packed)) ext; + } __packed ext; }; -} __attribute__ ((packed)); +} __packed; enum ieee80211_timeout_interval_type { WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */, -- cgit v1.2.3 From ec61cd63dd3f3bf982180b2bcc1b325160d73837 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 28 Dec 2012 12:12:10 +0100 Subject: mac80211: support HT notify channel width action Support the HT notify channel width action frame to update the rate scaling about the bandwidth the peer can receive in. Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 5db76ebe8810..ccf9ee1dca8c 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -701,6 +701,11 @@ enum ieee80211_rann_flags { RANN_FLAG_IS_GATE = 1 << 0, }; +enum ieee80211_ht_chanwidth_values { + IEEE80211_HT_CHANWIDTH_20MHZ = 0, + IEEE80211_HT_CHANWIDTH_ANY = 1, +}; + #define WLAN_SA_QUERY_TR_ID_LEN 2 struct ieee80211_mgmt { @@ -821,6 +826,10 @@ struct ieee80211_mgmt { u8 action; u8 smps_control; } __packed ht_smps; + struct { + u8 action_code; + u8 chanwidth; + } __packed ht_notify_cw; struct { u8 action_code; u8 dialog_token; -- cgit v1.2.3 From d2e5f0c16ad60a7208fd371233e63b73c990ece2 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 23 Dec 2012 00:02:44 +0100 Subject: ACPI / PCI: Rework the setup and cleanup of device wakeup Currently, the ACPI wakeup capability of PCI devices is set up in two different places, partially in acpi_pci_bind() where runtime wakeup is initialized and partially in platform_pci_wakeup_init(), where system wakeup is initialized. The cleanup is only done in acpi_pci_unbind() and it only covers runtime wakeup. Use the new .setup() and .cleanup() callbacks in struct acpi_bus_type to consolidate that code and do the setup and the cleanup each in one place. Signed-off-by: Rafael J. Wysocki Acked-by: Yinghai Lu Acked-by: Toshi Kani --- include/linux/acpi.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 3994d7790b23..8c1d6f2a2193 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -526,9 +526,14 @@ static inline int acpi_subsys_resume_early(struct device *dev) { return 0; } #endif #if defined(CONFIG_ACPI) && defined(CONFIG_PM) +struct acpi_device *acpi_dev_pm_get_node(struct device *dev); int acpi_dev_pm_attach(struct device *dev, bool power_on); void acpi_dev_pm_detach(struct device *dev, bool power_off); #else +static inline struct acpi_device *acpi_dev_pm_get_node(struct device *dev) +{ + return NULL; +} static inline int acpi_dev_pm_attach(struct device *dev, bool power_on) { return -ENODEV; -- cgit v1.2.3 From 9a32299394d8cce79ca7d0098dc32c4f14032dcd Mon Sep 17 00:00:00 2001 From: Philippe De Muyter Date: Fri, 12 Oct 2012 17:52:45 +0200 Subject: powerpc, dma: move bestcomm driver from arch/powerpc/sysdev to drivers/dma The bestcomm dma hardware, and some of its users like the FEC ethernet component, is used in different FreeScale parts, including non-powerpc parts like the ColdFire MCF547x & MCF548x families. Don't keep the driver hidden in arch/powerpc where it is inaccessible for other arches. .c files are moved to drivers/dma/bestcomm, while .h files are moved to include/linux/fsl/bestcomm. Makefiles, Kconfigs and #include directives are updated for the new file locations. Tested by recompiling for MPC5200 with all bestcomm users enabled. Signed-off-by: Philippe De Muyter Signed-off-by: Anatolij Gustschin --- include/linux/fsl/bestcomm/ata.h | 30 +++ include/linux/fsl/bestcomm/bestcomm.h | 213 ++++++++++++++++++ include/linux/fsl/bestcomm/bestcomm_priv.h | 350 +++++++++++++++++++++++++++++ include/linux/fsl/bestcomm/fec.h | 61 +++++ include/linux/fsl/bestcomm/gen_bd.h | 53 +++++ include/linux/fsl/bestcomm/sram.h | 54 +++++ 6 files changed, 761 insertions(+) create mode 100644 include/linux/fsl/bestcomm/ata.h create mode 100644 include/linux/fsl/bestcomm/bestcomm.h create mode 100644 include/linux/fsl/bestcomm/bestcomm_priv.h create mode 100644 include/linux/fsl/bestcomm/fec.h create mode 100644 include/linux/fsl/bestcomm/gen_bd.h create mode 100644 include/linux/fsl/bestcomm/sram.h (limited to 'include/linux') diff --git a/include/linux/fsl/bestcomm/ata.h b/include/linux/fsl/bestcomm/ata.h new file mode 100644 index 000000000000..0b2371811334 --- /dev/null +++ b/include/linux/fsl/bestcomm/ata.h @@ -0,0 +1,30 @@ +/* + * Header for Bestcomm ATA task driver + * + * + * Copyright (C) 2006 Freescale - John Rigby + * Copyright (C) 2006 Sylvain Munaut + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#ifndef __BESTCOMM_ATA_H__ +#define __BESTCOMM_ATA_H__ + + +struct bcom_ata_bd { + u32 status; + u32 src_pa; + u32 dst_pa; +}; + +extern struct bcom_task * bcom_ata_init(int queue_len, int maxbufsize); +extern void bcom_ata_rx_prepare(struct bcom_task *tsk); +extern void bcom_ata_tx_prepare(struct bcom_task *tsk); +extern void bcom_ata_reset_bd(struct bcom_task *tsk); +extern void bcom_ata_release(struct bcom_task *tsk); + +#endif /* __BESTCOMM_ATA_H__ */ + diff --git a/include/linux/fsl/bestcomm/bestcomm.h b/include/linux/fsl/bestcomm/bestcomm.h new file mode 100644 index 000000000000..a0e2e6b19b57 --- /dev/null +++ b/include/linux/fsl/bestcomm/bestcomm.h @@ -0,0 +1,213 @@ +/* + * Public header for the MPC52xx processor BestComm driver + * + * + * Copyright (C) 2006 Sylvain Munaut + * Copyright (C) 2005 Varma Electronics Oy, + * ( by Andrey Volkov ) + * Copyright (C) 2003-2004 MontaVista, Software, Inc. + * ( by Dale Farnsworth ) + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#ifndef __BESTCOMM_H__ +#define __BESTCOMM_H__ + +/** + * struct bcom_bd - Structure describing a generic BestComm buffer descriptor + * @status: The current status of this buffer. Exact meaning depends on the + * task type + * @data: An array of u32 extra data. Size of array is task dependent. + * + * Note: Don't dereference a bcom_bd pointer as an array. The size of the + * bcom_bd is variable. Use bcom_get_bd() instead. + */ +struct bcom_bd { + u32 status; + u32 data[0]; /* variable payload size */ +}; + +/* ======================================================================== */ +/* Generic task management */ +/* ======================================================================== */ + +/** + * struct bcom_task - Structure describing a loaded BestComm task + * + * This structure is never built by the driver it self. It's built and + * filled the intermediate layer of the BestComm API, the task dependent + * support code. + * + * Most likely you don't need to poke around inside this structure. The + * fields are exposed in the header just for the sake of inline functions + */ +struct bcom_task { + unsigned int tasknum; + unsigned int flags; + int irq; + + struct bcom_bd *bd; + phys_addr_t bd_pa; + void **cookie; + unsigned short index; + unsigned short outdex; + unsigned int num_bd; + unsigned int bd_size; + + void* priv; +}; + +#define BCOM_FLAGS_NONE 0x00000000ul +#define BCOM_FLAGS_ENABLE_TASK (1ul << 0) + +/** + * bcom_enable - Enable a BestComm task + * @tsk: The BestComm task structure + * + * This function makes sure the given task is enabled and can be run + * by the BestComm engine as needed + */ +extern void bcom_enable(struct bcom_task *tsk); + +/** + * bcom_disable - Disable a BestComm task + * @tsk: The BestComm task structure + * + * This function disable a given task, making sure it's not executed + * by the BestComm engine. + */ +extern void bcom_disable(struct bcom_task *tsk); + + +/** + * bcom_get_task_irq - Returns the irq number of a BestComm task + * @tsk: The BestComm task structure + */ +static inline int +bcom_get_task_irq(struct bcom_task *tsk) { + return tsk->irq; +} + +/* ======================================================================== */ +/* BD based tasks helpers */ +/* ======================================================================== */ + +#define BCOM_BD_READY 0x40000000ul + +/** _bcom_next_index - Get next input index. + * @tsk: pointer to task structure + * + * Support function; Device drivers should not call this + */ +static inline int +_bcom_next_index(struct bcom_task *tsk) +{ + return ((tsk->index + 1) == tsk->num_bd) ? 0 : tsk->index + 1; +} + +/** _bcom_next_outdex - Get next output index. + * @tsk: pointer to task structure + * + * Support function; Device drivers should not call this + */ +static inline int +_bcom_next_outdex(struct bcom_task *tsk) +{ + return ((tsk->outdex + 1) == tsk->num_bd) ? 0 : tsk->outdex + 1; +} + +/** + * bcom_queue_empty - Checks if a BestComm task BD queue is empty + * @tsk: The BestComm task structure + */ +static inline int +bcom_queue_empty(struct bcom_task *tsk) +{ + return tsk->index == tsk->outdex; +} + +/** + * bcom_queue_full - Checks if a BestComm task BD queue is full + * @tsk: The BestComm task structure + */ +static inline int +bcom_queue_full(struct bcom_task *tsk) +{ + return tsk->outdex == _bcom_next_index(tsk); +} + +/** + * bcom_get_bd - Get a BD from the queue + * @tsk: The BestComm task structure + * index: Index of the BD to fetch + */ +static inline struct bcom_bd +*bcom_get_bd(struct bcom_task *tsk, unsigned int index) +{ + /* A cast to (void*) so the address can be incremented by the + * real size instead of by sizeof(struct bcom_bd) */ + return ((void *)tsk->bd) + (index * tsk->bd_size); +} + +/** + * bcom_buffer_done - Checks if a BestComm + * @tsk: The BestComm task structure + */ +static inline int +bcom_buffer_done(struct bcom_task *tsk) +{ + struct bcom_bd *bd; + if (bcom_queue_empty(tsk)) + return 0; + + bd = bcom_get_bd(tsk, tsk->outdex); + return !(bd->status & BCOM_BD_READY); +} + +/** + * bcom_prepare_next_buffer - clear status of next available buffer. + * @tsk: The BestComm task structure + * + * Returns pointer to next buffer descriptor + */ +static inline struct bcom_bd * +bcom_prepare_next_buffer(struct bcom_task *tsk) +{ + struct bcom_bd *bd; + + bd = bcom_get_bd(tsk, tsk->index); + bd->status = 0; /* cleanup last status */ + return bd; +} + +static inline void +bcom_submit_next_buffer(struct bcom_task *tsk, void *cookie) +{ + struct bcom_bd *bd = bcom_get_bd(tsk, tsk->index); + + tsk->cookie[tsk->index] = cookie; + mb(); /* ensure the bd is really up-to-date */ + bd->status |= BCOM_BD_READY; + tsk->index = _bcom_next_index(tsk); + if (tsk->flags & BCOM_FLAGS_ENABLE_TASK) + bcom_enable(tsk); +} + +static inline void * +bcom_retrieve_buffer(struct bcom_task *tsk, u32 *p_status, struct bcom_bd **p_bd) +{ + void *cookie = tsk->cookie[tsk->outdex]; + struct bcom_bd *bd = bcom_get_bd(tsk, tsk->outdex); + + if (p_status) + *p_status = bd->status; + if (p_bd) + *p_bd = bd; + tsk->outdex = _bcom_next_outdex(tsk); + return cookie; +} + +#endif /* __BESTCOMM_H__ */ diff --git a/include/linux/fsl/bestcomm/bestcomm_priv.h b/include/linux/fsl/bestcomm/bestcomm_priv.h new file mode 100644 index 000000000000..3b52f3ffbdf8 --- /dev/null +++ b/include/linux/fsl/bestcomm/bestcomm_priv.h @@ -0,0 +1,350 @@ +/* + * Private header for the MPC52xx processor BestComm driver + * + * By private, we mean that driver should not use it directly. It's meant + * to be used by the BestComm engine driver itself and by the intermediate + * layer between the core and the drivers. + * + * Copyright (C) 2006 Sylvain Munaut + * Copyright (C) 2005 Varma Electronics Oy, + * ( by Andrey Volkov ) + * Copyright (C) 2003-2004 MontaVista, Software, Inc. + * ( by Dale Farnsworth ) + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#ifndef __BESTCOMM_PRIV_H__ +#define __BESTCOMM_PRIV_H__ + +#include +#include +#include +#include + +#include "sram.h" + + +/* ======================================================================== */ +/* Engine related stuff */ +/* ======================================================================== */ + +/* Zones sizes and needed alignments */ +#define BCOM_MAX_TASKS 16 +#define BCOM_MAX_VAR 24 +#define BCOM_MAX_INC 8 +#define BCOM_MAX_FDT 64 +#define BCOM_MAX_CTX 20 +#define BCOM_CTX_SIZE (BCOM_MAX_CTX * sizeof(u32)) +#define BCOM_CTX_ALIGN 0x100 +#define BCOM_VAR_SIZE (BCOM_MAX_VAR * sizeof(u32)) +#define BCOM_INC_SIZE (BCOM_MAX_INC * sizeof(u32)) +#define BCOM_VAR_ALIGN 0x80 +#define BCOM_FDT_SIZE (BCOM_MAX_FDT * sizeof(u32)) +#define BCOM_FDT_ALIGN 0x100 + +/** + * struct bcom_tdt - Task Descriptor Table Entry + * + */ +struct bcom_tdt { + u32 start; + u32 stop; + u32 var; + u32 fdt; + u32 exec_status; /* used internally by BestComm engine */ + u32 mvtp; /* used internally by BestComm engine */ + u32 context; + u32 litbase; +}; + +/** + * struct bcom_engine + * + * This holds all info needed globaly to handle the engine + */ +struct bcom_engine { + struct device_node *ofnode; + struct mpc52xx_sdma __iomem *regs; + phys_addr_t regs_base; + + struct bcom_tdt *tdt; + u32 *ctx; + u32 *var; + u32 *fdt; + + spinlock_t lock; +}; + +extern struct bcom_engine *bcom_eng; + + +/* ======================================================================== */ +/* Tasks related stuff */ +/* ======================================================================== */ + +/* Tasks image header */ +#define BCOM_TASK_MAGIC 0x4243544B /* 'BCTK' */ + +struct bcom_task_header { + u32 magic; + u8 desc_size; /* the size fields */ + u8 var_size; /* are given in number */ + u8 inc_size; /* of 32-bits words */ + u8 first_var; + u8 reserved[8]; +}; + +/* Descriptors structure & co */ +#define BCOM_DESC_NOP 0x000001f8 +#define BCOM_LCD_MASK 0x80000000 +#define BCOM_DRD_EXTENDED 0x40000000 +#define BCOM_DRD_INITIATOR_SHIFT 21 + +/* Tasks pragma */ +#define BCOM_PRAGMA_BIT_RSV 7 /* reserved pragma bit */ +#define BCOM_PRAGMA_BIT_PRECISE_INC 6 /* increment 0=when possible, */ + /* 1=iter end */ +#define BCOM_PRAGMA_BIT_RST_ERROR_NO 5 /* don't reset errors on */ + /* task enable */ +#define BCOM_PRAGMA_BIT_PACK 4 /* pack data enable */ +#define BCOM_PRAGMA_BIT_INTEGER 3 /* data alignment */ + /* 0=frac(msb), 1=int(lsb) */ +#define BCOM_PRAGMA_BIT_SPECREAD 2 /* XLB speculative read */ +#define BCOM_PRAGMA_BIT_CW 1 /* write line buffer enable */ +#define BCOM_PRAGMA_BIT_RL 0 /* read line buffer enable */ + + /* Looks like XLB speculative read generates XLB errors when a buffer + * is at the end of the physical memory. i.e. when accessing the + * lasts words, the engine tries to prefetch the next but there is no + * next ... + */ +#define BCOM_STD_PRAGMA ((0 << BCOM_PRAGMA_BIT_RSV) | \ + (0 << BCOM_PRAGMA_BIT_PRECISE_INC) | \ + (0 << BCOM_PRAGMA_BIT_RST_ERROR_NO) | \ + (0 << BCOM_PRAGMA_BIT_PACK) | \ + (0 << BCOM_PRAGMA_BIT_INTEGER) | \ + (0 << BCOM_PRAGMA_BIT_SPECREAD) | \ + (1 << BCOM_PRAGMA_BIT_CW) | \ + (1 << BCOM_PRAGMA_BIT_RL)) + +#define BCOM_PCI_PRAGMA ((0 << BCOM_PRAGMA_BIT_RSV) | \ + (0 << BCOM_PRAGMA_BIT_PRECISE_INC) | \ + (0 << BCOM_PRAGMA_BIT_RST_ERROR_NO) | \ + (0 << BCOM_PRAGMA_BIT_PACK) | \ + (1 << BCOM_PRAGMA_BIT_INTEGER) | \ + (0 << BCOM_PRAGMA_BIT_SPECREAD) | \ + (1 << BCOM_PRAGMA_BIT_CW) | \ + (1 << BCOM_PRAGMA_BIT_RL)) + +#define BCOM_ATA_PRAGMA BCOM_STD_PRAGMA +#define BCOM_CRC16_DP_0_PRAGMA BCOM_STD_PRAGMA +#define BCOM_CRC16_DP_1_PRAGMA BCOM_STD_PRAGMA +#define BCOM_FEC_RX_BD_PRAGMA BCOM_STD_PRAGMA +#define BCOM_FEC_TX_BD_PRAGMA BCOM_STD_PRAGMA +#define BCOM_GEN_DP_0_PRAGMA BCOM_STD_PRAGMA +#define BCOM_GEN_DP_1_PRAGMA BCOM_STD_PRAGMA +#define BCOM_GEN_DP_2_PRAGMA BCOM_STD_PRAGMA +#define BCOM_GEN_DP_3_PRAGMA BCOM_STD_PRAGMA +#define BCOM_GEN_DP_BD_0_PRAGMA BCOM_STD_PRAGMA +#define BCOM_GEN_DP_BD_1_PRAGMA BCOM_STD_PRAGMA +#define BCOM_GEN_RX_BD_PRAGMA BCOM_STD_PRAGMA +#define BCOM_GEN_TX_BD_PRAGMA BCOM_STD_PRAGMA +#define BCOM_GEN_LPC_PRAGMA BCOM_STD_PRAGMA +#define BCOM_PCI_RX_PRAGMA BCOM_PCI_PRAGMA +#define BCOM_PCI_TX_PRAGMA BCOM_PCI_PRAGMA + +/* Initiators number */ +#define BCOM_INITIATOR_ALWAYS 0 +#define BCOM_INITIATOR_SCTMR_0 1 +#define BCOM_INITIATOR_SCTMR_1 2 +#define BCOM_INITIATOR_FEC_RX 3 +#define BCOM_INITIATOR_FEC_TX 4 +#define BCOM_INITIATOR_ATA_RX 5 +#define BCOM_INITIATOR_ATA_TX 6 +#define BCOM_INITIATOR_SCPCI_RX 7 +#define BCOM_INITIATOR_SCPCI_TX 8 +#define BCOM_INITIATOR_PSC3_RX 9 +#define BCOM_INITIATOR_PSC3_TX 10 +#define BCOM_INITIATOR_PSC2_RX 11 +#define BCOM_INITIATOR_PSC2_TX 12 +#define BCOM_INITIATOR_PSC1_RX 13 +#define BCOM_INITIATOR_PSC1_TX 14 +#define BCOM_INITIATOR_SCTMR_2 15 +#define BCOM_INITIATOR_SCLPC 16 +#define BCOM_INITIATOR_PSC5_RX 17 +#define BCOM_INITIATOR_PSC5_TX 18 +#define BCOM_INITIATOR_PSC4_RX 19 +#define BCOM_INITIATOR_PSC4_TX 20 +#define BCOM_INITIATOR_I2C2_RX 21 +#define BCOM_INITIATOR_I2C2_TX 22 +#define BCOM_INITIATOR_I2C1_RX 23 +#define BCOM_INITIATOR_I2C1_TX 24 +#define BCOM_INITIATOR_PSC6_RX 25 +#define BCOM_INITIATOR_PSC6_TX 26 +#define BCOM_INITIATOR_IRDA_RX 25 +#define BCOM_INITIATOR_IRDA_TX 26 +#define BCOM_INITIATOR_SCTMR_3 27 +#define BCOM_INITIATOR_SCTMR_4 28 +#define BCOM_INITIATOR_SCTMR_5 29 +#define BCOM_INITIATOR_SCTMR_6 30 +#define BCOM_INITIATOR_SCTMR_7 31 + +/* Initiators priorities */ +#define BCOM_IPR_ALWAYS 7 +#define BCOM_IPR_SCTMR_0 2 +#define BCOM_IPR_SCTMR_1 2 +#define BCOM_IPR_FEC_RX 6 +#define BCOM_IPR_FEC_TX 5 +#define BCOM_IPR_ATA_RX 7 +#define BCOM_IPR_ATA_TX 7 +#define BCOM_IPR_SCPCI_RX 2 +#define BCOM_IPR_SCPCI_TX 2 +#define BCOM_IPR_PSC3_RX 2 +#define BCOM_IPR_PSC3_TX 2 +#define BCOM_IPR_PSC2_RX 2 +#define BCOM_IPR_PSC2_TX 2 +#define BCOM_IPR_PSC1_RX 2 +#define BCOM_IPR_PSC1_TX 2 +#define BCOM_IPR_SCTMR_2 2 +#define BCOM_IPR_SCLPC 2 +#define BCOM_IPR_PSC5_RX 2 +#define BCOM_IPR_PSC5_TX 2 +#define BCOM_IPR_PSC4_RX 2 +#define BCOM_IPR_PSC4_TX 2 +#define BCOM_IPR_I2C2_RX 2 +#define BCOM_IPR_I2C2_TX 2 +#define BCOM_IPR_I2C1_RX 2 +#define BCOM_IPR_I2C1_TX 2 +#define BCOM_IPR_PSC6_RX 2 +#define BCOM_IPR_PSC6_TX 2 +#define BCOM_IPR_IRDA_RX 2 +#define BCOM_IPR_IRDA_TX 2 +#define BCOM_IPR_SCTMR_3 2 +#define BCOM_IPR_SCTMR_4 2 +#define BCOM_IPR_SCTMR_5 2 +#define BCOM_IPR_SCTMR_6 2 +#define BCOM_IPR_SCTMR_7 2 + + +/* ======================================================================== */ +/* API */ +/* ======================================================================== */ + +extern struct bcom_task *bcom_task_alloc(int bd_count, int bd_size, int priv_size); +extern void bcom_task_free(struct bcom_task *tsk); +extern int bcom_load_image(int task, u32 *task_image); +extern void bcom_set_initiator(int task, int initiator); + + +#define TASK_ENABLE 0x8000 + +/** + * bcom_disable_prefetch - Hook to disable bus prefetching + * + * ATA DMA and the original MPC5200 need this due to silicon bugs. At the + * moment disabling prefetch is a one-way street. There is no mechanism + * in place to turn prefetch back on after it has been disabled. There is + * no reason it couldn't be done, it would just be more complex to implement. + */ +static inline void bcom_disable_prefetch(void) +{ + u16 regval; + + regval = in_be16(&bcom_eng->regs->PtdCntrl); + out_be16(&bcom_eng->regs->PtdCntrl, regval | 1); +}; + +static inline void +bcom_enable_task(int task) +{ + u16 reg; + reg = in_be16(&bcom_eng->regs->tcr[task]); + out_be16(&bcom_eng->regs->tcr[task], reg | TASK_ENABLE); +} + +static inline void +bcom_disable_task(int task) +{ + u16 reg = in_be16(&bcom_eng->regs->tcr[task]); + out_be16(&bcom_eng->regs->tcr[task], reg & ~TASK_ENABLE); +} + + +static inline u32 * +bcom_task_desc(int task) +{ + return bcom_sram_pa2va(bcom_eng->tdt[task].start); +} + +static inline int +bcom_task_num_descs(int task) +{ + return (bcom_eng->tdt[task].stop - bcom_eng->tdt[task].start)/sizeof(u32) + 1; +} + +static inline u32 * +bcom_task_var(int task) +{ + return bcom_sram_pa2va(bcom_eng->tdt[task].var); +} + +static inline u32 * +bcom_task_inc(int task) +{ + return &bcom_task_var(task)[BCOM_MAX_VAR]; +} + + +static inline int +bcom_drd_is_extended(u32 desc) +{ + return (desc) & BCOM_DRD_EXTENDED; +} + +static inline int +bcom_desc_is_drd(u32 desc) +{ + return !(desc & BCOM_LCD_MASK) && desc != BCOM_DESC_NOP; +} + +static inline int +bcom_desc_initiator(u32 desc) +{ + return (desc >> BCOM_DRD_INITIATOR_SHIFT) & 0x1f; +} + +static inline void +bcom_set_desc_initiator(u32 *desc, int initiator) +{ + *desc = (*desc & ~(0x1f << BCOM_DRD_INITIATOR_SHIFT)) | + ((initiator & 0x1f) << BCOM_DRD_INITIATOR_SHIFT); +} + + +static inline void +bcom_set_task_pragma(int task, int pragma) +{ + u32 *fdt = &bcom_eng->tdt[task].fdt; + *fdt = (*fdt & ~0xff) | pragma; +} + +static inline void +bcom_set_task_auto_start(int task, int next_task) +{ + u16 __iomem *tcr = &bcom_eng->regs->tcr[task]; + out_be16(tcr, (in_be16(tcr) & ~0xff) | 0x00c0 | next_task); +} + +static inline void +bcom_set_tcr_initiator(int task, int initiator) +{ + u16 __iomem *tcr = &bcom_eng->regs->tcr[task]; + out_be16(tcr, (in_be16(tcr) & ~0x1f00) | ((initiator & 0x1f) << 8)); +} + + +#endif /* __BESTCOMM_PRIV_H__ */ + diff --git a/include/linux/fsl/bestcomm/fec.h b/include/linux/fsl/bestcomm/fec.h new file mode 100644 index 000000000000..ee565d94d503 --- /dev/null +++ b/include/linux/fsl/bestcomm/fec.h @@ -0,0 +1,61 @@ +/* + * Header for Bestcomm FEC tasks driver + * + * + * Copyright (C) 2006-2007 Sylvain Munaut + * Copyright (C) 2003-2004 MontaVista, Software, Inc. + * ( by Dale Farnsworth ) + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#ifndef __BESTCOMM_FEC_H__ +#define __BESTCOMM_FEC_H__ + + +struct bcom_fec_bd { + u32 status; + u32 skb_pa; +}; + +#define BCOM_FEC_TX_BD_TFD 0x08000000ul /* transmit frame done */ +#define BCOM_FEC_TX_BD_TC 0x04000000ul /* transmit CRC */ +#define BCOM_FEC_TX_BD_ABC 0x02000000ul /* append bad CRC */ + +#define BCOM_FEC_RX_BD_L 0x08000000ul /* buffer is last in frame */ +#define BCOM_FEC_RX_BD_BC 0x00800000ul /* DA is broadcast */ +#define BCOM_FEC_RX_BD_MC 0x00400000ul /* DA is multicast and not broadcast */ +#define BCOM_FEC_RX_BD_LG 0x00200000ul /* Rx frame length violation */ +#define BCOM_FEC_RX_BD_NO 0x00100000ul /* Rx non-octet aligned frame */ +#define BCOM_FEC_RX_BD_CR 0x00040000ul /* Rx CRC error */ +#define BCOM_FEC_RX_BD_OV 0x00020000ul /* overrun */ +#define BCOM_FEC_RX_BD_TR 0x00010000ul /* Rx frame truncated */ +#define BCOM_FEC_RX_BD_LEN_MASK 0x000007fful /* mask for length of received frame */ +#define BCOM_FEC_RX_BD_ERRORS (BCOM_FEC_RX_BD_LG | BCOM_FEC_RX_BD_NO | \ + BCOM_FEC_RX_BD_CR | BCOM_FEC_RX_BD_OV | BCOM_FEC_RX_BD_TR) + + +extern struct bcom_task * +bcom_fec_rx_init(int queue_len, phys_addr_t fifo, int maxbufsize); + +extern int +bcom_fec_rx_reset(struct bcom_task *tsk); + +extern void +bcom_fec_rx_release(struct bcom_task *tsk); + + +extern struct bcom_task * +bcom_fec_tx_init(int queue_len, phys_addr_t fifo); + +extern int +bcom_fec_tx_reset(struct bcom_task *tsk); + +extern void +bcom_fec_tx_release(struct bcom_task *tsk); + + +#endif /* __BESTCOMM_FEC_H__ */ + diff --git a/include/linux/fsl/bestcomm/gen_bd.h b/include/linux/fsl/bestcomm/gen_bd.h new file mode 100644 index 000000000000..de47260e69da --- /dev/null +++ b/include/linux/fsl/bestcomm/gen_bd.h @@ -0,0 +1,53 @@ +/* + * Header for Bestcomm General Buffer Descriptor tasks driver + * + * + * Copyright (C) 2007 Sylvain Munaut + * Copyright (C) 2006 AppSpec Computer Technologies Corp. + * Jeff Gibbons + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * + */ + +#ifndef __BESTCOMM_GEN_BD_H__ +#define __BESTCOMM_GEN_BD_H__ + +struct bcom_gen_bd { + u32 status; + u32 buf_pa; +}; + + +extern struct bcom_task * +bcom_gen_bd_rx_init(int queue_len, phys_addr_t fifo, + int initiator, int ipr, int maxbufsize); + +extern int +bcom_gen_bd_rx_reset(struct bcom_task *tsk); + +extern void +bcom_gen_bd_rx_release(struct bcom_task *tsk); + + +extern struct bcom_task * +bcom_gen_bd_tx_init(int queue_len, phys_addr_t fifo, + int initiator, int ipr); + +extern int +bcom_gen_bd_tx_reset(struct bcom_task *tsk); + +extern void +bcom_gen_bd_tx_release(struct bcom_task *tsk); + + +/* PSC support utility wrappers */ +struct bcom_task * bcom_psc_gen_bd_rx_init(unsigned psc_num, int queue_len, + phys_addr_t fifo, int maxbufsize); +struct bcom_task * bcom_psc_gen_bd_tx_init(unsigned psc_num, int queue_len, + phys_addr_t fifo); +#endif /* __BESTCOMM_GEN_BD_H__ */ + diff --git a/include/linux/fsl/bestcomm/sram.h b/include/linux/fsl/bestcomm/sram.h new file mode 100644 index 000000000000..b6d668963cce --- /dev/null +++ b/include/linux/fsl/bestcomm/sram.h @@ -0,0 +1,54 @@ +/* + * Handling of a sram zone for bestcomm + * + * + * Copyright (C) 2007 Sylvain Munaut + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#ifndef __BESTCOMM_SRAM_H__ +#define __BESTCOMM_SRAM_H__ + +#include +#include +#include + + +/* Structure used internally */ + /* The internals are here for the inline functions + * sake, certainly not for the user to mess with ! + */ +struct bcom_sram { + phys_addr_t base_phys; + void *base_virt; + unsigned int size; + rh_info_t *rh; + spinlock_t lock; +}; + +extern struct bcom_sram *bcom_sram; + + +/* Public API */ +extern int bcom_sram_init(struct device_node *sram_node, char *owner); +extern void bcom_sram_cleanup(void); + +extern void* bcom_sram_alloc(int size, int align, phys_addr_t *phys); +extern void bcom_sram_free(void *ptr); + +static inline phys_addr_t bcom_sram_va2pa(void *va) { + return bcom_sram->base_phys + + (unsigned long)(va - bcom_sram->base_virt); +} + +static inline void *bcom_sram_pa2va(phys_addr_t pa) { + return bcom_sram->base_virt + + (unsigned long)(pa - bcom_sram->base_phys); +} + + +#endif /* __BESTCOMM_SRAM_H__ */ + -- cgit v1.2.3 From 1d5210008bd3a26daf4b06aed9d6c330dd4c83e2 Mon Sep 17 00:00:00 2001 From: Lance Ortiz Date: Thu, 3 Jan 2013 15:34:08 -0700 Subject: aerdrv: Enhanced AER logging This patch will provide a more reliable and easy way for user-space applications to have access to AER logs rather than reading them from the message buffer. It also provides a way to notify user-space when an AER event occurs. The aer driver is updated to generate a trace event of function 'aer_event' when a PCIe error is reported over the AER interface. The trace event was added to both the interrupt based aer path and the firmware first path. Signed-off-by: Lance Ortiz Acked-by: Mauro Carvalho Chehab Acked-by: Boris Petkov Signed-off-by: Tony Luck --- include/linux/aer.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/aer.h b/include/linux/aer.h index 544abdb2238c..ec10e1b24c1c 100644 --- a/include/linux/aer.h +++ b/include/linux/aer.h @@ -49,8 +49,8 @@ static inline int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev) } #endif -extern void cper_print_aer(const char *prefix, int cper_severity, - struct aer_capability_regs *aer); +extern void cper_print_aer(const char *prefix, struct pci_dev *dev, + int cper_severity, struct aer_capability_regs *aer); extern int cper_severity_to_aer(int cper_severity); extern void aer_recover_queue(int domain, unsigned int bus, unsigned int devfn, int severity); -- cgit v1.2.3 From f568f6ca811fe681ecfd11c4ce78b6aa488020c0 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Fri, 21 Dec 2012 15:02:05 -0800 Subject: pstore: remove __dev* attributes. CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit from the pstore filesystem. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton Cc: Anton Vorontsov Cc: Colin Cross Cc: Kees Cook Cc: Tony Luck Signed-off-by: Greg Kroah-Hartman --- include/linux/pstore_ram.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pstore_ram.h b/include/linux/pstore_ram.h index 098d2a838296..cb6ab5feab67 100644 --- a/include/linux/pstore_ram.h +++ b/include/linux/pstore_ram.h @@ -46,9 +46,8 @@ struct persistent_ram_zone { size_t old_log_size; }; -struct persistent_ram_zone * __devinit persistent_ram_new(phys_addr_t start, - size_t size, u32 sig, - int ecc_size); +struct persistent_ram_zone *persistent_ram_new(phys_addr_t start, size_t size, + u32 sig, int ecc_size); void persistent_ram_free(struct persistent_ram_zone *prz); void persistent_ram_zap(struct persistent_ram_zone *prz); -- cgit v1.2.3 From 0f58a01ddd5e8177255705ba15e64c3b74d67993 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Fri, 21 Dec 2012 15:12:59 -0800 Subject: Drivers: bcma: remove __dev* attributes. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton Cc: "Rafał Miłecki" Signed-off-by: Greg Kroah-Hartman --- include/linux/bcma/bcma_driver_gmac_cmn.h | 2 +- include/linux/bcma/bcma_driver_pci.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_gmac_cmn.h b/include/linux/bcma/bcma_driver_gmac_cmn.h index def894b83b0d..4dd1f33e36a2 100644 --- a/include/linux/bcma/bcma_driver_gmac_cmn.h +++ b/include/linux/bcma/bcma_driver_gmac_cmn.h @@ -92,7 +92,7 @@ struct bcma_drv_gmac_cmn { #define gmac_cmn_write32(gc, offset, val) bcma_write32((gc)->core, offset, val) #ifdef CONFIG_BCMA_DRIVER_GMAC_CMN -extern void __devinit bcma_core_gmac_cmn_init(struct bcma_drv_gmac_cmn *gc); +extern void bcma_core_gmac_cmn_init(struct bcma_drv_gmac_cmn *gc); #else static inline void bcma_core_gmac_cmn_init(struct bcma_drv_gmac_cmn *gc) { } #endif diff --git a/include/linux/bcma/bcma_driver_pci.h b/include/linux/bcma/bcma_driver_pci.h index 41da581e1612..c48d98d27b77 100644 --- a/include/linux/bcma/bcma_driver_pci.h +++ b/include/linux/bcma/bcma_driver_pci.h @@ -214,7 +214,7 @@ struct bcma_drv_pci { #define pcicore_write16(pc, offset, val) bcma_write16((pc)->core, offset, val) #define pcicore_write32(pc, offset, val) bcma_write32((pc)->core, offset, val) -extern void __devinit bcma_core_pci_init(struct bcma_drv_pci *pc); +extern void bcma_core_pci_init(struct bcma_drv_pci *pc); extern int bcma_core_pci_irq_ctl(struct bcma_drv_pci *pc, struct bcma_device *core, bool enable); extern void bcma_core_pci_extend_L1timer(struct bcma_drv_pci *pc, bool extend); -- cgit v1.2.3 From e389623a68622e3c9be440ab522fac1aa1ca3454 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Fri, 21 Dec 2012 15:15:49 -0800 Subject: include: remove __dev* attributes. CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit from some include files that were previously missed. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton Signed-off-by: Greg Kroah-Hartman --- include/linux/ata_platform.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ata_platform.h b/include/linux/ata_platform.h index fe9989636b62..b9fde17f767c 100644 --- a/include/linux/ata_platform.h +++ b/include/linux/ata_platform.h @@ -15,12 +15,12 @@ struct pata_platform_info { unsigned int irq_flags; }; -extern int __devinit __pata_platform_probe(struct device *dev, - struct resource *io_res, - struct resource *ctl_res, - struct resource *irq_res, - unsigned int ioport_shift, - int __pio_mask); +extern int __pata_platform_probe(struct device *dev, + struct resource *io_res, + struct resource *ctl_res, + struct resource *irq_res, + unsigned int ioport_shift, + int __pio_mask); /* * Marvell SATA private data -- cgit v1.2.3 From e41b2d7fe7803e85e1202d0eb172717d7bf1bbaf Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Tue, 1 Jan 2013 03:30:15 +0000 Subject: net: set dev->addr_assign_type correctly Not a bitfield, but a plain value. Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- include/linux/etherdevice.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h index 243eea1e33d8..1a43e1b4f7ad 100644 --- a/include/linux/etherdevice.h +++ b/include/linux/etherdevice.h @@ -192,7 +192,7 @@ static inline void eth_zero_addr(u8 *addr) */ static inline void eth_hw_addr_random(struct net_device *dev) { - dev->addr_assign_type |= NET_ADDR_RANDOM; + dev->addr_assign_type = NET_ADDR_RANDOM; eth_random_addr(dev->dev_addr); } -- cgit v1.2.3 From fbdeca2d7753aa1ab929aeb77ccc46489eed02b9 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Tue, 1 Jan 2013 03:30:16 +0000 Subject: net: add address assign type "SET" This is the way to indicate that mac address of a device has been set by dev_set_mac_address() Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- include/linux/netdevice.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 6835b5837f93..c5031a45e185 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -64,6 +64,8 @@ struct wireless_dev; #define NET_ADDR_PERM 0 /* address is permanent (default) */ #define NET_ADDR_RANDOM 1 /* address is generated randomly */ #define NET_ADDR_STOLEN 2 /* address is stolen from other device */ +#define NET_ADDR_SET 3 /* address is set using + * dev_set_mac_address() */ /* Backlog congestion levels */ #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ -- cgit v1.2.3 From d069015e268bcac6c8bd8997b3235f5f977d3ab6 Mon Sep 17 00:00:00 2001 From: Zhang Rui Date: Mon, 19 Nov 2012 15:33:51 +0800 Subject: Introduce THERMAL_TREND_RAISE_FULL and THERMAL_TREND_DROP_FULL These two new thermal_trend types are used to tell the governor that the temeprature is raising/dropping quickly. Thermal cooling governors should handle this situation and make proper decisions, e.g. set cooling state to upper/lower limit directly instead of one step each time. Signed-off-by: Zhang Rui --- include/linux/thermal.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/thermal.h b/include/linux/thermal.h index fe82022478e7..883bcda7e1e4 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -74,6 +74,8 @@ enum thermal_trend { THERMAL_TREND_STABLE, /* temperature is stable */ THERMAL_TREND_RAISING, /* temperature is raising */ THERMAL_TREND_DROPPING, /* temperature is dropping */ + THERMAL_TREND_RAISE_FULL, /* apply highest cooling action */ + THERMAL_TREND_DROP_FULL, /* apply lowest cooling action */ }; /* Events supported by Thermal Netlink */ -- cgit v1.2.3 From 9442490a02867088bcd5ed6231fa3b35a733c2b8 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 4 Jan 2013 16:35:07 +0000 Subject: regmap: irq: Support wake IRQ mask inversion Support devices which have an enable rather than mask register for wake sources. Signed-off-by: Mark Brown --- include/linux/regmap.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index b7e95bf942c9..8c0b50df3d59 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -381,6 +381,7 @@ struct regmap_irq_chip { unsigned int wake_base; unsigned int irq_reg_stride; unsigned int mask_invert; + unsigned int wake_invert; bool runtime_pm; int num_regs; -- cgit v1.2.3 From 9ff162a8b96c96238773972e26288a366e403b0c Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Thu, 3 Jan 2013 22:48:49 +0000 Subject: net: introduce upper device lists This lists are supposed to serve for storing pointers to all upper devices. Eventually it will replace dev->master pointer which is used for bonding, bridge, team but it cannot be used for vlan, macvlan where there might be multiple upper present. In case the upper link is replacement for dev->master, it is marked with "master" flag. New upper device list resolves this limitation. Also, the information stored in lists is used for preventing looping setups like "bond->somethingelse->samebond" Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- include/linux/netdevice.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index c5031a45e185..e324601f48e8 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1174,6 +1174,8 @@ struct net_device { * which this device is member of. */ + struct list_head upper_dev_list; /* List of upper devices */ + /* Interface address info used in eth_type_trans() */ unsigned char *dev_addr; /* hw address, (before bcast because most packets are @@ -2636,6 +2638,18 @@ extern int netdev_max_backlog; extern int netdev_tstamp_prequeue; extern int weight_p; extern int bpf_jit_enable; + +extern bool netdev_has_upper_dev(struct net_device *dev, + struct net_device *upper_dev); +extern bool netdev_has_any_upper_dev(struct net_device *dev); +extern struct net_device *netdev_master_upper_dev_get(struct net_device *dev); +extern struct net_device *netdev_master_upper_dev_get_rcu(struct net_device *dev); +extern int netdev_upper_dev_link(struct net_device *dev, + struct net_device *upper_dev); +extern int netdev_master_upper_dev_link(struct net_device *dev, + struct net_device *upper_dev); +extern void netdev_upper_dev_unlink(struct net_device *dev, + struct net_device *upper_dev); extern int netdev_set_master(struct net_device *dev, struct net_device *master); extern int netdev_set_bond_master(struct net_device *dev, struct net_device *master); -- cgit v1.2.3 From 8b98a70c28a607a02b3c3d41bc9a4c141f421052 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Thu, 3 Jan 2013 22:49:02 +0000 Subject: net: remove no longer used netdev_set_bond_master() and netdev_set_master() Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- include/linux/netdevice.h | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index e324601f48e8..3cad8eab02b6 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -858,8 +858,7 @@ struct netdev_fcoe_hbainfo { * flow_id is a flow ID to be passed to rps_may_expire_flow() later. * Return the filter ID on success, or a negative error code. * - * Slave management functions (for bridge, bonding, etc). User should - * call netdev_set_master() to set dev->master properly. + * Slave management functions (for bridge, bonding, etc). * int (*ndo_add_slave)(struct net_device *dev, struct net_device *slave_dev); * Called to make another netdev an underling. * @@ -2650,9 +2649,6 @@ extern int netdev_master_upper_dev_link(struct net_device *dev, struct net_device *upper_dev); extern void netdev_upper_dev_unlink(struct net_device *dev, struct net_device *upper_dev); -extern int netdev_set_master(struct net_device *dev, struct net_device *master); -extern int netdev_set_bond_master(struct net_device *dev, - struct net_device *master); extern int skb_checksum_help(struct sk_buff *skb); extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, netdev_features_t features); -- cgit v1.2.3 From 85464ef271a0f5496f404c6a2f2dfbf1d76e1a49 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Thu, 3 Jan 2013 22:49:03 +0000 Subject: net: kill dev->master Nobody uses this now. Remove it. Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- include/linux/netdevice.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 3cad8eab02b6..0209ac328e8a 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1169,10 +1169,6 @@ struct net_device { * avoid dirtying this cache line. */ - struct net_device *master; /* Pointer to master device of a group, - * which this device is member of. - */ - struct list_head upper_dev_list; /* List of upper devices */ /* Interface address info used in eth_type_trans() */ -- cgit v1.2.3 From 03f595668017f1a1fb971c02fc37140bc6e7bb1c Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Fri, 4 Jan 2013 15:34:50 -0800 Subject: ipc: add sysctl to specify desired next object id Add 3 new variables and sysctls to tune them (by one "next_id" variable for messages, semaphores and shared memory respectively). This variable can be used to set desired id for next allocated IPC object. By default it's equal to -1 and old behaviour is preserved. If this variable is non-negative, then desired idr will be extracted from it and used as a start value to search for free IDR slot. Notes: 1) this patch doesn't guarantee that the new object will have desired id. So it's up to user space how to handle new object with wrong id. 2) After a sucessful id allocation attempt, "next_id" will be set back to -1 (if it was non-negative). [akpm@linux-foundation.org: checkpatch fixes] Signed-off-by: Stanislav Kinsbursky Cc: Serge Hallyn Cc: "Eric W. Biederman" Cc: Pavel Emelyanov Cc: Al Viro Cc: KOSAKI Motohiro Cc: Michael Kerrisk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/ipc_namespace.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h index fe771978e877..ae221a7b5092 100644 --- a/include/linux/ipc_namespace.h +++ b/include/linux/ipc_namespace.h @@ -24,6 +24,7 @@ struct ipc_ids { unsigned short seq_max; struct rw_semaphore rw_mutex; struct idr ipcs_idr; + int next_id; }; struct ipc_namespace { -- cgit v1.2.3 From f9dd87f4738c7555aca2cdf8cb2b2326cafb0cad Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Fri, 4 Jan 2013 15:34:52 -0800 Subject: ipc: message queue receive cleanup Move all message related manipulation into one function msg_fill(). Actually, two functions because of the compat one. [akpm@linux-foundation.org: checkpatch fixes] Signed-off-by: Stanislav Kinsbursky Cc: Serge Hallyn Cc: "Eric W. Biederman" Cc: Pavel Emelyanov Cc: Al Viro Cc: KOSAKI Motohiro Cc: Michael Kerrisk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/msg.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/msg.h b/include/linux/msg.h index 7a4b9e97d29a..fc5743a554e6 100644 --- a/include/linux/msg.h +++ b/include/linux/msg.h @@ -34,7 +34,8 @@ struct msg_queue { /* Helper routines for sys_msgsnd and sys_msgrcv */ extern long do_msgsnd(int msqid, long mtype, void __user *mtext, size_t msgsz, int msgflg); -extern long do_msgrcv(int msqid, long *pmtype, void __user *mtext, - size_t msgsz, long msgtyp, int msgflg); +extern long do_msgrcv(int msqid, void __user *buf, size_t bufsz, long msgtyp, + int msgflg, + long (*msg_fill)(void __user *, struct msg_msg *, size_t)); #endif /* _LINUX_MSG_H */ -- cgit v1.2.3 From 3a665531a3b7c2ad2c87903b24646be6916340e4 Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Fri, 4 Jan 2013 15:34:56 -0800 Subject: selftests: IPC message queue copy feature test This test can be used to check wheither kernel supports IPC message queue copy and restore features (required by CRIU project). Signed-off-by: Stanislav Kinsbursky Cc: Serge Hallyn Cc: "Eric W. Biederman" Cc: Pavel Emelyanov Cc: Al Viro Cc: KOSAKI Motohiro Cc: Michael Kerrisk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/msg.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/msg.h b/include/linux/msg.h index fc5743a554e6..391af8d11cce 100644 --- a/include/linux/msg.h +++ b/include/linux/msg.h @@ -36,6 +36,7 @@ extern long do_msgsnd(int msqid, long mtype, void __user *mtext, size_t msgsz, int msgflg); extern long do_msgrcv(int msqid, void __user *buf, size_t bufsz, long msgtyp, int msgflg, - long (*msg_fill)(void __user *, struct msg_msg *, size_t)); + long (*msg_fill)(void __user *, struct msg_msg *, + size_t)); #endif /* _LINUX_MSG_H */ -- cgit v1.2.3 From a458431e176ddb27e8ef8b98c2a681b217337393 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Fri, 4 Jan 2013 15:35:08 -0800 Subject: mm: fix zone_watermark_ok_safe() accounting of isolated pages Commit 702d1a6e0766 ("memory-hotplug: fix kswapd looping forever problem") added an isolated pageblocks counter (nr_pageblock_isolate in struct zone) and used it to adjust free pages counter in zone_watermark_ok_safe() to prevent kswapd looping forever problem. Then later, commit 2139cbe627b8 ("cma: fix counting of isolated pages") fixed accounting of isolated pages in global free pages counter. It made the previous zone_watermark_ok_safe() fix unnecessary and potentially harmful (cause now isolated pages may be accounted twice making free pages counter incorrect). This patch removes the special isolated pageblocks counter altogether which fixes zone_watermark_ok_safe() free pages check. Reported-by: Tomasz Stanislawski Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Kyungmin Park Cc: Minchan Kim Cc: KOSAKI Motohiro Cc: Aaditya Kumar Cc: KAMEZAWA Hiroyuki Cc: Mel Gorman Cc: Michal Hocko Cc: Marek Szyprowski Cc: Michal Nazarewicz Cc: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 8 -------- 1 file changed, 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 4bec5be82cab..73b64a38b984 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -503,14 +503,6 @@ struct zone { * rarely used fields: */ const char *name; -#ifdef CONFIG_MEMORY_ISOLATION - /* - * the number of MIGRATE_ISOLATE *pageblock*. - * We need this for free page counting. Look at zone_watermark_ok_safe. - * It's protected by zone->lock - */ - int nr_pageblock_isolate; -#endif } ____cacheline_internodealigned_in_smp; typedef enum { -- cgit v1.2.3 From a05be99174edc9f258ee68140b71b9645ad977ee Mon Sep 17 00:00:00 2001 From: Ramakrishna Pallala Date: Fri, 30 Nov 2012 13:57:46 +0530 Subject: power_supply: Add watchdog and safety timer expiries under PROP_HEALTH_* As most of the charger chips come with two kinds of safety features related to timing: 1. Watchdog Timer (interms of seconds/mins) 2. Safety Timer (interms of hours) This patch adds these to fault causes in POWER_SUPPLY_PROP_HEALTH_* enums so that whenever there is either watchdog timeout or safety timer timeout driver could notify the user space accurately about the fault and will also be helpful for debug. Signed-off-by: Ramakrishna Pallala Signed-off-by: Anton Vorontsov --- include/linux/power_supply.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 1f0ab90aff00..25c0982eb9b1 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -54,6 +54,8 @@ enum { POWER_SUPPLY_HEALTH_OVERVOLTAGE, POWER_SUPPLY_HEALTH_UNSPEC_FAILURE, POWER_SUPPLY_HEALTH_COLD, + POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE, + POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE, }; enum { -- cgit v1.2.3 From 8e3cdca26c9d9f0936c555bc67e2a5d71e61bb0d Mon Sep 17 00:00:00 2001 From: Alexander Holler Date: Sat, 15 Dec 2012 12:45:00 +0000 Subject: iio: Add Usage IDs for HID time sensors. These are Usage IDs for the attributes year, month, day, hour, minute and second, needed to read HID time sensors. Signed-off-by: Alexander Holler Signed-off-by: Jiri Kosina Signed-off-by: Jonathan Cameron --- include/linux/hid-sensor-ids.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/hid-sensor-ids.h b/include/linux/hid-sensor-ids.h index 55f277372fed..6f24446e7669 100644 --- a/include/linux/hid-sensor-ids.h +++ b/include/linux/hid-sensor-ids.h @@ -66,6 +66,15 @@ #define HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Y_AXIS 0x200486 #define HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Z_AXIS 0x200487 +/* Time (2000a0) */ +#define HID_USAGE_SENSOR_TIME 0x2000a0 +#define HID_USAGE_SENSOR_TIME_YEAR 0x200521 +#define HID_USAGE_SENSOR_TIME_MONTH 0x200522 +#define HID_USAGE_SENSOR_TIME_DAY 0x200523 +#define HID_USAGE_SENSOR_TIME_HOUR 0x200525 +#define HID_USAGE_SENSOR_TIME_MINUTE 0x200526 +#define HID_USAGE_SENSOR_TIME_SECOND 0x200527 + /* Units */ #define HID_USAGE_SENSOR_UNITS_NOT_SPECIFIED 0x00 #define HID_USAGE_SENSOR_UNITS_LUX 0x01 -- cgit v1.2.3 From 2974cdf293e1cb00860522624252aeaba502c8bf Mon Sep 17 00:00:00 2001 From: Alexander Holler Date: Sat, 15 Dec 2012 12:45:00 +0000 Subject: iio: merge hid-sensor-attributes.h into hid-sensor-hub.h The stuff in hid-sensor-attributes.h is needed by every piece which uses hid-sensor-hub and merging it into hid-sensor-hub.h makes it accessible from outside the iio subdirectory. Signed-off-by: Alexander Holler Acked-by: Jiri Kosina Signed-off-by: Jonathan Cameron --- include/linux/hid-sensor-hub.h | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) (limited to 'include/linux') diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h index 0aa5f4c42ae6..e6265f94d816 100644 --- a/include/linux/hid-sensor-hub.h +++ b/include/linux/hid-sensor-hub.h @@ -157,4 +157,42 @@ int sensor_hub_set_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, */ int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, u32 field_index, s32 *value); + +/* hid-sensor-attributes */ + +/* Common hid sensor iio structure */ +struct hid_sensor_iio_common { + struct hid_sensor_hub_device *hsdev; + struct platform_device *pdev; + unsigned usage_id; + bool data_ready; + struct hid_sensor_hub_attribute_info poll; + struct hid_sensor_hub_attribute_info report_state; + struct hid_sensor_hub_attribute_info power_state; + struct hid_sensor_hub_attribute_info sensitivity; +}; + +/*Convert from hid unit expo to regular exponent*/ +static inline int hid_sensor_convert_exponent(int unit_expo) +{ + if (unit_expo < 0x08) + return unit_expo; + else if (unit_expo <= 0x0f) + return -(0x0f-unit_expo+1); + else + return 0; +} + +int hid_sensor_parse_common_attributes(struct hid_sensor_hub_device *hsdev, + u32 usage_id, + struct hid_sensor_iio_common *st); +int hid_sensor_write_raw_hyst_value(struct hid_sensor_iio_common *st, + int val1, int val2); +int hid_sensor_read_raw_hyst_value(struct hid_sensor_iio_common *st, + int *val1, int *val2); +int hid_sensor_write_samp_freq_value(struct hid_sensor_iio_common *st, + int val1, int val2); +int hid_sensor_read_samp_freq_value(struct hid_sensor_iio_common *st, + int *val1, int *val2); + #endif -- cgit v1.2.3 From e07c6d170ccec9e7377a43a2999b87b860c642e9 Mon Sep 17 00:00:00 2001 From: Alexander Holler Date: Sat, 15 Dec 2012 12:45:00 +0000 Subject: hid: iio: rename struct hid_sensor_iio_common to hid_sensor_common The structure with common attributes for hid-sensors isn't specific to the iio-subsystem, so rename it to hid_sensor_common. Signed-off-by: Alexander Holler Acked-by: Jiri Kosina Signed-off-by: Jonathan Cameron --- include/linux/hid-sensor-hub.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hid-sensor-hub.h b/include/linux/hid-sensor-hub.h index e6265f94d816..ecefb7311dd6 100644 --- a/include/linux/hid-sensor-hub.h +++ b/include/linux/hid-sensor-hub.h @@ -161,7 +161,7 @@ int sensor_hub_get_feature(struct hid_sensor_hub_device *hsdev, u32 report_id, /* hid-sensor-attributes */ /* Common hid sensor iio structure */ -struct hid_sensor_iio_common { +struct hid_sensor_common { struct hid_sensor_hub_device *hsdev; struct platform_device *pdev; unsigned usage_id; @@ -185,14 +185,14 @@ static inline int hid_sensor_convert_exponent(int unit_expo) int hid_sensor_parse_common_attributes(struct hid_sensor_hub_device *hsdev, u32 usage_id, - struct hid_sensor_iio_common *st); -int hid_sensor_write_raw_hyst_value(struct hid_sensor_iio_common *st, + struct hid_sensor_common *st); +int hid_sensor_write_raw_hyst_value(struct hid_sensor_common *st, int val1, int val2); -int hid_sensor_read_raw_hyst_value(struct hid_sensor_iio_common *st, +int hid_sensor_read_raw_hyst_value(struct hid_sensor_common *st, int *val1, int *val2); -int hid_sensor_write_samp_freq_value(struct hid_sensor_iio_common *st, +int hid_sensor_write_samp_freq_value(struct hid_sensor_common *st, int val1, int val2); -int hid_sensor_read_samp_freq_value(struct hid_sensor_iio_common *st, +int hid_sensor_read_samp_freq_value(struct hid_sensor_common *st, int *val1, int *val2); #endif -- cgit v1.2.3 From 9a6cecc846169159bfce511f4c0034bb96eea1ca Mon Sep 17 00:00:00 2001 From: Jon Hunter Date: Fri, 14 Sep 2012 17:41:57 -0500 Subject: dmaengine: add helper function to request a slave DMA channel Currently slave DMA channels are requested by calling dma_request_channel() and requires DMA clients to pass various filter parameters to obtain the appropriate channel. With device-tree being used by architectures such as arm and the addition of device-tree helper functions to extract the relevant DMA client information from device-tree, add a new function to request a slave DMA channel using device-tree. This function is currently a simple wrapper that calls the device-tree of_dma_request_slave_channel() function. Cc: Nicolas Ferre Cc: Benoit Cousson Cc: Stephen Warren Cc: Grant Likely Cc: Russell King Cc: Rob Herring Cc: Arnd Bergmann Cc: Vinod Koul Cc: Dan Williams Acked-by: Arnd Bergmann Signed-off-by: Jon Hunter Reviewed-by: Stephen Warren Acked-by: Rob Herring Signed-off-by: Vinod Koul --- include/linux/dmaengine.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index d3201e438d16..8cd0e2556d04 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -974,6 +974,7 @@ enum dma_status dma_sync_wait(struct dma_chan *chan, dma_cookie_t cookie); enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx); void dma_issue_pending_all(void); struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask, dma_filter_fn fn, void *fn_param); +struct dma_chan *dma_request_slave_channel(struct device *dev, char *name); void dma_release_channel(struct dma_chan *chan); #else static inline enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx) @@ -988,6 +989,11 @@ static inline struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask, { return NULL; } +static inline struct dma_chan *dma_request_slave_channel(struct device *dev, + char *name) +{ + return NULL +} static inline void dma_release_channel(struct dma_chan *chan) { } -- cgit v1.2.3 From aa3da644c76d1c2083d085e453c18f7c51f19bc4 Mon Sep 17 00:00:00 2001 From: Jon Hunter Date: Fri, 14 Sep 2012 17:41:56 -0500 Subject: of: Add generic device tree DMA helpers This is based upon the work by Benoit Cousson [1] and Nicolas Ferre [2] to add some basic helpers to retrieve a DMA controller device_node and the DMA request/channel information. Aim of DMA helpers - The purpose of device-tree is to describe the capabilites of the hardware. Thinking about DMA controllers purely from the context of the hardware to begin with, we can describe a device in terms of a DMA controller as follows ... 1. Number of DMA controllers 2. Number of channels (maybe physical or logical) 3. Mapping of DMA requests signals to DMA controller 4. Number of DMA interrupts 5. Mapping of DMA interrupts to channels - With the above in mind the aim of the DT DMA helper functions is to extract the above information from the DT and provide to the appropriate driver. However, due to the vast number of DMA controllers and not all are using a common driver (such as DMA Engine) it has been seen that this is not a trivial task. In previous discussions on this topic the following concerns have been raised ... 1. How does the binding support devices with multiple DMA controllers? 2. How to support both legacy DMA controllers not using DMA Engine as well as those that support DMA Engine. 3. When using with DMA Engine how do we support the various implementations where the opaque filter function parameter differs between implementations? 4. How do we handle DMA channels that are identified with a string versus a integer? - Hence the design of the DMA helpers has to accomodate the above or align on an agreement what can be or should be supported. Design of DMA helpers 1. Registering DMA controllers In the case of DMA controllers that are using DMA Engine, requesting a channel is performed by calling the following function. struct dma_chan *dma_request_channel(dma_cap_mask_t mask, dma_filter_fn filter_fn, void *filter_param); The mask variable is used to match a type of the device controller in a list of controllers. The filter_fn and filter_param are used to identify the required dma channel and return a handle to the dma channel of type dma_chan. From the examples I have seen, the mask and filter_fn are constant for a given DMA controller and therefore, we can specify these as controller specific data when registering the DMA controller with the device-tree DMA helpers. The filter_param variable is of an unknown type and is typically specific to the DMA engine implementation for a given DMA controller. To allow some flexibility in the type and formating of this filter_param we employ an xlate to translate the device-tree binding information into the appropriate format. The xlate function used for a DMA controller can also be specified when registering the DMA controller with the device-tree DMA helpers. Based upon the above, a function for registering the DMA controller with the DMA helpers now looks like the below. The data variable is used to pass a pointer to DMA controller specific data used by the xlate function. int of_dma_controller_register(struct device_node *np, struct dma_chan *(*of_dma_xlate) (struct of_phandle_args *, struct of_dma *), void *data) For example, in the case where DMA engine is used, we define the following structure (that stores the DMA engine capability mask and filter function) and pass this to the data variable in the above function. struct of_dma_filter_info { dma_cap_mask_t dma_cap; dma_filter_fn filter_fn; }; 2. Representing and requesting channel information Please see the dma binding documentation included in this patch for a description of how DMA controllers and client information should be represented with device-tree. For more information on how this binding came about please see [3]. In addition to this, feedback received from the Linux kernel summit showed a consensus (among those who attended) to use a name to identify DMA client information [4]. A DMA channel can be requested by calling the following function, where name is a required parameter used for identifying a DMA channel. This function has been designed to return a structure of type dma_chan to work with the DMA engine driver. Note that if DMA engine is used then drivers should be using the DMA engine API dma_request_slave_channel() (implemented in part 2 of this series, "dmaengine: add helper function to request a slave DMA channel") which will in turn call the below function if device-tree is present. The aim being to have a common DMA engine interface regardless of whether device tree is being used. struct dma_chan *of_dma_request_slave_channel(struct device_node *np, char *name) 3. Supporting legacy devices not using DMA Engine These devices present a problem, as there may not be a uniform way to easily support them with regard to device tree. Ideally, these should be migrated to DMA engine. However, if this is not possible, then they should still be able to use this binding, the only constaint imposed by this implementation is that when requesting a DMA channel via of_dma_request_slave_channel(), it will return a type of dma_chan. This implementation has been tested on OMAP4430 using the kernel v3.6-rc5. I have validated that MMC is working on the PANDA board with this implementation. My development branch for testing on OMAP can be found here [5]. v6: - minor corrections in DMA binding documentation v5: - minor update to binding documentation - added loop to exhaustively search for a slave channel in the case where there could be alternative channels available v4: - revert the removal of xlate function from v3 - update the proposed binding format and APIs based upon discussions [3] v3: - avoid passing an xlate function and instead pass DMA engine parameters - define number of dma channels and requests in dma-controller node v2: - remove of_dma_to_resource API - make property #dma-cells required (no fallback anymore) - another check in of_dma_xlate_onenumbercell() function [1] http://article.gmane.org/gmane.linux.drivers.devicetree/12022 [2] http://article.gmane.org/gmane.linux.ports.arm.omap/73622 [3] http://marc.info/?l=linux-omap&m=133582085008539&w=2 [4] http://pad.linaro.org/arm-mini-summit-2012 [5] https://github.com/jonhunter/linux/tree/dev-dt-dma Cc: Nicolas Ferre Cc: Benoit Cousson Cc: Stephen Warren Cc: Grant Likely Cc: Russell King Cc: Rob Herring Cc: Arnd Bergmann Cc: Vinod Koul Cc: Dan Williams Reviewed-by: Arnd Bergmann Reviewed-by: Nicolas Ferre Signed-off-by: Jon Hunter Reviewed-by: Stephen Warren Acked-by: Rob Herring Signed-off-by: Vinod Koul --- include/linux/of_dma.h | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 include/linux/of_dma.h (limited to 'include/linux') diff --git a/include/linux/of_dma.h b/include/linux/of_dma.h new file mode 100644 index 000000000000..337823dc6b90 --- /dev/null +++ b/include/linux/of_dma.h @@ -0,0 +1,45 @@ +/* + * OF helpers for DMA request / controller + * + * Based on of_gpio.h + * + * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __LINUX_OF_DMA_H +#define __LINUX_OF_DMA_H + +#include +#include + +struct device_node; + +struct of_dma { + struct list_head of_dma_controllers; + struct device_node *of_node; + int of_dma_nbcells; + struct dma_chan *(*of_dma_xlate) + (struct of_phandle_args *, struct of_dma *); + void *of_dma_data; +}; + +struct of_dma_filter_info { + dma_cap_mask_t dma_cap; + dma_filter_fn filter_fn; +}; + +extern int of_dma_controller_register(struct device_node *np, + struct dma_chan *(*of_dma_xlate) + (struct of_phandle_args *, struct of_dma *), + void *data); +extern void of_dma_controller_free(struct device_node *np); +extern struct dma_chan *of_dma_request_slave_channel(struct device_node *np, + char *name); +extern struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_spec, + struct of_dma *ofdma); + +#endif /* __LINUX_OF_DMA_H */ -- cgit v1.2.3 From 4c26bc601d20fa67eefcb27477feda130c10790e Mon Sep 17 00:00:00 2001 From: Vinod Koul Date: Tue, 25 Sep 2012 09:57:36 +0530 Subject: of: dma- fix build break for !CONFIG_OF Signed-off-by: Vinod Koul --- include/linux/of_dma.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of_dma.h b/include/linux/of_dma.h index 337823dc6b90..67158ddd1f3e 100644 --- a/include/linux/of_dma.h +++ b/include/linux/of_dma.h @@ -32,6 +32,7 @@ struct of_dma_filter_info { dma_filter_fn filter_fn; }; +#ifdef CONFIG_OF extern int of_dma_controller_register(struct device_node *np, struct dma_chan *(*of_dma_xlate) (struct of_phandle_args *, struct of_dma *), @@ -41,5 +42,31 @@ extern struct dma_chan *of_dma_request_slave_channel(struct device_node *np, char *name); extern struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_spec, struct of_dma *ofdma); +#else +static int of_dma_controller_register(struct device_node *np, + struct dma_chan *(*of_dma_xlate) + (struct of_phandle_args *, struct of_dma *), + void *data) +{ + return -ENODEV; +} + +static void of_dma_controller_free(struct device_node *np) +{ +} + +static struct dma_chan *of_dma_request_slave_channel(struct device_node *np, + char *name) +{ + return NULL; +} + +static struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_spec, + struct of_dma *ofdma) +{ + return NULL; +} + +#endif #endif /* __LINUX_OF_DMA_H */ -- cgit v1.2.3 From d18d5f59797009d86a0ee46feb2a56d53707455a Mon Sep 17 00:00:00 2001 From: Vinod Koul Date: Tue, 25 Sep 2012 16:18:55 +0530 Subject: dmaengine: fix build failure due to missing semi-colon Reported-by: Fengguang Wu Signed-off-by: Vinod Koul --- include/linux/dmaengine.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 8cd0e2556d04..c88f302d91c9 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -992,7 +992,7 @@ static inline struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask, static inline struct dma_chan *dma_request_slave_channel(struct device *dev, char *name) { - return NULL + return NULL; } static inline void dma_release_channel(struct dma_chan *chan) { -- cgit v1.2.3 From 177d2bf5c7d3ab41bfb4ce2597dde668225958dd Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 16 Oct 2012 09:49:16 +0530 Subject: dmaengine: dw_dmac: Update documentation style comments for dw_dma_platform_data Documentation style comments were missing for few fields in struct dw_dma_platform_data. Add these. Signed-off-by: Viresh Kumar Reviewed-by: Andy Shevchenko Signed-off-by: Vinod Koul --- include/linux/dw_dmac.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dw_dmac.h b/include/linux/dw_dmac.h index e1c8c9e919ac..62a6190dee22 100644 --- a/include/linux/dw_dmac.h +++ b/include/linux/dw_dmac.h @@ -19,6 +19,8 @@ * @nr_channels: Number of channels supported by hardware (max 8) * @is_private: The device channels should be marked as private and not for * by the general purpose DMA channel allocator. + * @chan_allocation_order: Allocate channels starting from 0 or 7 + * @chan_priority: Set channel priority increasing from 0 to 7 or 7 to 0. * @block_size: Maximum block size supported by the controller * @nr_masters: Number of AHB masters supported by the controller * @data_width: Maximum data width supported by hardware per AHB master -- cgit v1.2.3 From 9f575d9741ff28b6661f639d63b4f465c19889c4 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 4 Jan 2013 10:35:06 +0100 Subject: dma: coh901318: create a proper platform data file This extracts the platform data that we will keep generic from the U300 platform and associates it with the COH901318 driver in . Acked-by: Vinod Koul Signed-off-by: Linus Walleij --- include/linux/platform_data/dma-coh901318.h | 72 +++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 include/linux/platform_data/dma-coh901318.h (limited to 'include/linux') diff --git a/include/linux/platform_data/dma-coh901318.h b/include/linux/platform_data/dma-coh901318.h new file mode 100644 index 000000000000..c4cb9590d115 --- /dev/null +++ b/include/linux/platform_data/dma-coh901318.h @@ -0,0 +1,72 @@ +/* + * Platform data for the COH901318 DMA controller + * Copyright (C) 2007-2013 ST-Ericsson + * License terms: GNU General Public License (GPL) version 2 + */ + +#ifndef PLAT_COH901318_H +#define PLAT_COH901318_H + +#ifdef CONFIG_COH901318 + +/* We only support the U300 DMA channels */ +#define U300_DMA_MSL_TX_0 0 +#define U300_DMA_MSL_TX_1 1 +#define U300_DMA_MSL_TX_2 2 +#define U300_DMA_MSL_TX_3 3 +#define U300_DMA_MSL_TX_4 4 +#define U300_DMA_MSL_TX_5 5 +#define U300_DMA_MSL_TX_6 6 +#define U300_DMA_MSL_RX_0 7 +#define U300_DMA_MSL_RX_1 8 +#define U300_DMA_MSL_RX_2 9 +#define U300_DMA_MSL_RX_3 10 +#define U300_DMA_MSL_RX_4 11 +#define U300_DMA_MSL_RX_5 12 +#define U300_DMA_MSL_RX_6 13 +#define U300_DMA_MMCSD_RX_TX 14 +#define U300_DMA_MSPRO_TX 15 +#define U300_DMA_MSPRO_RX 16 +#define U300_DMA_UART0_TX 17 +#define U300_DMA_UART0_RX 18 +#define U300_DMA_APEX_TX 19 +#define U300_DMA_APEX_RX 20 +#define U300_DMA_PCM_I2S0_TX 21 +#define U300_DMA_PCM_I2S0_RX 22 +#define U300_DMA_PCM_I2S1_TX 23 +#define U300_DMA_PCM_I2S1_RX 24 +#define U300_DMA_XGAM_CDI 25 +#define U300_DMA_XGAM_PDI 26 +#define U300_DMA_SPI_TX 27 +#define U300_DMA_SPI_RX 28 +#define U300_DMA_GENERAL_PURPOSE_0 29 +#define U300_DMA_GENERAL_PURPOSE_1 30 +#define U300_DMA_GENERAL_PURPOSE_2 31 +#define U300_DMA_GENERAL_PURPOSE_3 32 +#define U300_DMA_GENERAL_PURPOSE_4 33 +#define U300_DMA_GENERAL_PURPOSE_5 34 +#define U300_DMA_GENERAL_PURPOSE_6 35 +#define U300_DMA_GENERAL_PURPOSE_7 36 +#define U300_DMA_GENERAL_PURPOSE_8 37 +#define U300_DMA_UART1_TX 38 +#define U300_DMA_UART1_RX 39 + +#define U300_DMA_DEVICE_CHANNELS 32 +#define U300_DMA_CHANNELS 40 + +/** + * coh901318_filter_id() - DMA channel filter function + * @chan: dma channel handle + * @chan_id: id of dma channel to be filter out + * + * In dma_request_channel() it specifies what channel id to be requested + */ +bool coh901318_filter_id(struct dma_chan *chan, void *chan_id); +#else +static inline bool coh901318_filter_id(struct dma_chan *chan, void *chan_id) +{ + return false; +} +#endif + +#endif /* PLAT_COH901318_H */ -- cgit v1.2.3 From d5b1fe68baa7213f198e5be8cd1a1037258ab2c8 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 28 Dec 2012 13:18:28 -0800 Subject: cgroup: remove unused dummy cgroup_fork_callbacks() 5edee61ede ("cgroup: cgroup_subsys->fork() should be called after the task is added to css_set") removed cgroup_fork_callbacks() but forgot to remove its dummy version for !CONFIG_CGROUPS. Remove it. Signed-off-by: Tejun Heo Reported-by: Herton Ronaldo Krzesinski --- include/linux/cgroup.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 7d73905dcba2..942e68705577 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -706,7 +706,6 @@ struct cgroup_subsys_state *cgroup_css_from_dir(struct file *f, int id); static inline int cgroup_init_early(void) { return 0; } static inline int cgroup_init(void) { return 0; } static inline void cgroup_fork(struct task_struct *p) {} -static inline void cgroup_fork_callbacks(struct task_struct *p) {} static inline void cgroup_post_fork(struct task_struct *p) {} static inline void cgroup_exit(struct task_struct *p, int callbacks) {} -- cgit v1.2.3 From 12a9d2fef1d35770d3cdc2cd1faabb83c45bc0fa Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 7 Jan 2013 08:49:33 -0800 Subject: cgroup: implement cgroup_rightmost_descendant() Implement cgroup_rightmost_descendant() which returns the right most descendant of the specified cgroup. This can be used to skip the cgroup's subtree while iterating with cgroup_for_each_descendant_pre(). Signed-off-by: Tejun Heo Acked-by: Michal Hocko Acked-by: Li Zefan --- include/linux/cgroup.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 942e68705577..8118a3120378 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -558,6 +558,7 @@ static inline struct cgroup* task_cgroup(struct task_struct *task, struct cgroup *cgroup_next_descendant_pre(struct cgroup *pos, struct cgroup *cgroup); +struct cgroup *cgroup_rightmost_descendant(struct cgroup *pos); /** * cgroup_for_each_descendant_pre - pre-order walk of a cgroup's descendants -- cgit v1.2.3 From 8f9dc85348ac37ff3b6b031d22e93a5b59d81f83 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Fri, 4 Jan 2013 00:51:24 +0100 Subject: bcma: mips: remove assigned_irqs from structure This member is not needed any more. Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/bcma/bcma_driver_mips.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_mips.h b/include/linux/bcma/bcma_driver_mips.h index 0baf8a56b794..6495579e3f35 100644 --- a/include/linux/bcma/bcma_driver_mips.h +++ b/include/linux/bcma/bcma_driver_mips.h @@ -36,7 +36,6 @@ struct bcma_drv_mips { struct bcma_device *core; u8 setup_done:1; u8 early_setup_done:1; - unsigned int assigned_irqs; }; #ifdef CONFIG_BCMA_DRIVER_MIPS -- cgit v1.2.3 From 3c449ed0075994b3f3371f8254560428ba787efc Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Sat, 3 Nov 2012 21:39:31 -0700 Subject: PCI/ACPI: Reserve firmware-allocated resources for hot-added root buses Firmware may have assigned PCI BARs for hot-added devices, so reserve those resources before trying to allocate more. [bhelgaas: move empty weak definition here] Signed-off-by: Yinghai Lu Signed-off-by: Bjorn Helgaas --- include/linux/pci.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 15472d691ee6..907b455ab603 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -674,6 +674,7 @@ extern struct list_head pci_root_buses; /* list of all known PCI buses */ /* Some device drivers need know if pci is initiated */ extern int no_pci_devices(void); +void pcibios_resource_survey_bus(struct pci_bus *bus); void pcibios_fixup_bus(struct pci_bus *); int __must_check pcibios_enable_device(struct pci_dev *, int mask); /* Architecture specific versions may override this (weak) */ -- cgit v1.2.3 From a9ddb575d6d6c58c39e8c44a22b84445fedb0521 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 16 Oct 2012 09:49:17 +0530 Subject: dmaengine: dw_dmac: Enhance device tree support dw_dmac driver already supports device tree but it used to have its platform data passed the non-DT way. This patch does following changes: - pass platform data via DT, non-DT way still takes precedence if both are used. - create generic filter routine - Earlier slave information was made available by slave specific filter routines in chan->private field. Now, this information would be passed from within dmac DT node. Slave drivers would now be required to pass bus_id (a string) as parameter to this generic filter(), which would be compared against the slave data passed from DT, by the generic filter routine. - Update binding document Signed-off-by: Viresh Kumar Reviewed-by: Andy Shevchenko [Fixed __devinit usage] Signed-off-by: Vinod Koul --- include/linux/dw_dmac.h | 43 ++++++++++++++++++++++++++----------------- 1 file changed, 26 insertions(+), 17 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dw_dmac.h b/include/linux/dw_dmac.h index 62a6190dee22..41766de66e33 100644 --- a/include/linux/dw_dmac.h +++ b/include/linux/dw_dmac.h @@ -14,6 +14,26 @@ #include +/** + * struct dw_dma_slave - Controller-specific information about a slave + * + * @dma_dev: required DMA master device. Depricated. + * @bus_id: name of this device channel, not just a device name since + * devices may have more than one channel e.g. "foo_tx" + * @cfg_hi: Platform-specific initializer for the CFG_HI register + * @cfg_lo: Platform-specific initializer for the CFG_LO register + * @src_master: src master for transfers on allocated channel. + * @dst_master: dest master for transfers on allocated channel. + */ +struct dw_dma_slave { + struct device *dma_dev; + const char *bus_id; + u32 cfg_hi; + u32 cfg_lo; + u8 src_master; + u8 dst_master; +}; + /** * struct dw_dma_platform_data - Controller configuration parameters * @nr_channels: Number of channels supported by hardware (max 8) @@ -25,6 +45,8 @@ * @nr_masters: Number of AHB masters supported by the controller * @data_width: Maximum data width supported by hardware per AHB master * (0 - 8bits, 1 - 16bits, ..., 5 - 256bits) + * @sd: slave specific data. Used for configuring channels + * @sd_count: count of slave data structures passed. */ struct dw_dma_platform_data { unsigned int nr_channels; @@ -38,6 +60,9 @@ struct dw_dma_platform_data { unsigned short block_size; unsigned char nr_masters; unsigned char data_width[4]; + + struct dw_dma_slave *sd; + unsigned int sd_count; }; /* bursts size */ @@ -52,23 +77,6 @@ enum dw_dma_msize { DW_DMA_MSIZE_256, }; -/** - * struct dw_dma_slave - Controller-specific information about a slave - * - * @dma_dev: required DMA master device - * @cfg_hi: Platform-specific initializer for the CFG_HI register - * @cfg_lo: Platform-specific initializer for the CFG_LO register - * @src_master: src master for transfers on allocated channel. - * @dst_master: dest master for transfers on allocated channel. - */ -struct dw_dma_slave { - struct device *dma_dev; - u32 cfg_hi; - u32 cfg_lo; - u8 src_master; - u8 dst_master; -}; - /* Platform-configurable bits in CFG_HI */ #define DWC_CFGH_FCMODE (1 << 0) #define DWC_CFGH_FIFO_MODE (1 << 1) @@ -106,5 +114,6 @@ void dw_dma_cyclic_stop(struct dma_chan *chan); dma_addr_t dw_dma_get_src_addr(struct dma_chan *chan); dma_addr_t dw_dma_get_dst_addr(struct dma_chan *chan); +bool dw_dma_generic_filter(struct dma_chan *chan, void *param); #endif /* DW_DMAC_H */ -- cgit v1.2.3 From e5a087fdc1ebe5bba40bcecb53c28a0af70e3b47 Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Fri, 26 Oct 2012 23:35:15 +0900 Subject: dmaengine: use for_each_set_bit Use for_each_set_bit() to implement for_each_dma_cap_mask() and remove unused first_dma_cap() and next_dma_cap(). Signed-off-by: Akinobu Mita Cc: Vinod Koul Cc: Dan Williams Acked-by: Linus Walleij Signed-off-by: Vinod Koul --- include/linux/dmaengine.h | 18 +----------------- 1 file changed, 1 insertion(+), 17 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index c88f302d91c9..4c8643794e0d 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -849,20 +849,6 @@ static inline bool async_tx_test_ack(struct dma_async_tx_descriptor *tx) return (tx->flags & DMA_CTRL_ACK) == DMA_CTRL_ACK; } -#define first_dma_cap(mask) __first_dma_cap(&(mask)) -static inline int __first_dma_cap(const dma_cap_mask_t *srcp) -{ - return min_t(int, DMA_TX_TYPE_END, - find_first_bit(srcp->bits, DMA_TX_TYPE_END)); -} - -#define next_dma_cap(n, mask) __next_dma_cap((n), &(mask)) -static inline int __next_dma_cap(int n, const dma_cap_mask_t *srcp) -{ - return min_t(int, DMA_TX_TYPE_END, - find_next_bit(srcp->bits, DMA_TX_TYPE_END, n+1)); -} - #define dma_cap_set(tx, mask) __dma_cap_set((tx), &(mask)) static inline void __dma_cap_set(enum dma_transaction_type tx_type, dma_cap_mask_t *dstp) @@ -891,9 +877,7 @@ __dma_has_cap(enum dma_transaction_type tx_type, dma_cap_mask_t *srcp) } #define for_each_dma_cap_mask(cap, mask) \ - for ((cap) = first_dma_cap(mask); \ - (cap) < DMA_TX_TYPE_END; \ - (cap) = next_dma_cap((cap), (mask))) + for_each_set_bit(cap, mask.bits, DMA_TX_TYPE_END) /** * dma_async_issue_pending - flush pending transactions to HW -- cgit v1.2.3 From 9743a3b62dee8c9d8af1319f8d1c1ff39130267d Mon Sep 17 00:00:00 2001 From: Jon Hunter Date: Thu, 11 Oct 2012 14:43:01 -0500 Subject: of: dma: fix protection of DMA controller data stored by DMA helpers In the current implementation of the OF DMA helpers, read-copy-update (RCU) linked lists are being used for storing and accessing the DMA controller data. This part of implementation is based upon V2 of the DMA helpers by Nicolas [1]. During a recent review of RCU, it became apparent that the code is missing the required rcu_read_lock()/unlock() calls as well as synchronisation calls before freeing any memory protected by RCU. Having looked into adding the appropriate RCU calls to protect the DMA data it became apparent that with the current DMA helper implementation, using RCU is not as attractive as it may have been before. The main reasons being that ... 1. We need to protect the DMA data around calls to the xlate function. 2. The of_dma_simple_xlate() function calls the DMA engine function dma_request_channel() which employs a mutex and so could sleep. 3. The RCU read-side critical sections must not sleep and so we cannot hold an RCU read lock around the xlate function. Therefore, instead of using RCU, an alternative for this use-case is to employ a simple spinlock inconjunction with a usage count variable to keep track of how many current users of the DMA data structure there are. With this implementation, the DMA data cannot be freed until all current users of the DMA data are finished. This patch is based upon the DMA helpers fix for potential deadlock [2]. [1] http://article.gmane.org/gmane.linux.ports.arm.omap/73622 [2] http://marc.info/?l=linux-arm-kernel&m=134859982520984&w=2 Signed-off-by: Jon Hunter Signed-off-by: Vinod Koul --- include/linux/of_dma.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/of_dma.h b/include/linux/of_dma.h index 67158ddd1f3e..84b64f857e23 100644 --- a/include/linux/of_dma.h +++ b/include/linux/of_dma.h @@ -25,6 +25,7 @@ struct of_dma { struct dma_chan *(*of_dma_xlate) (struct of_phandle_args *, struct of_dma *); void *of_dma_data; + int use_count; }; struct of_dma_filter_info { @@ -37,7 +38,7 @@ extern int of_dma_controller_register(struct device_node *np, struct dma_chan *(*of_dma_xlate) (struct of_phandle_args *, struct of_dma *), void *data); -extern void of_dma_controller_free(struct device_node *np); +extern int of_dma_controller_free(struct device_node *np); extern struct dma_chan *of_dma_request_slave_channel(struct device_node *np, char *name); extern struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_spec, @@ -51,7 +52,7 @@ static int of_dma_controller_register(struct device_node *np, return -ENODEV; } -static void of_dma_controller_free(struct device_node *np) +static int of_dma_controller_free(struct device_node *np) { } -- cgit v1.2.3 From 91f8aecc501e456c97a6f49f7ea3797e874d5d89 Mon Sep 17 00:00:00 2001 From: Vinod Koul Date: Thu, 29 Nov 2012 12:17:22 +0530 Subject: dmaengine: fix !of_dma compilation warning Reported-by: Stephen Rothwell Reported-by: Fengguang Wu Signed-off-by: Vinod Koul --- include/linux/of_dma.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/of_dma.h b/include/linux/of_dma.h index 84b64f857e23..d15073e080dd 100644 --- a/include/linux/of_dma.h +++ b/include/linux/of_dma.h @@ -44,7 +44,7 @@ extern struct dma_chan *of_dma_request_slave_channel(struct device_node *np, extern struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_spec, struct of_dma *ofdma); #else -static int of_dma_controller_register(struct device_node *np, +static inline int of_dma_controller_register(struct device_node *np, struct dma_chan *(*of_dma_xlate) (struct of_phandle_args *, struct of_dma *), void *data) @@ -52,17 +52,18 @@ static int of_dma_controller_register(struct device_node *np, return -ENODEV; } -static int of_dma_controller_free(struct device_node *np) +static inline int of_dma_controller_free(struct device_node *np) { + return -ENODEV; } -static struct dma_chan *of_dma_request_slave_channel(struct device_node *np, +static inline struct dma_chan *of_dma_request_slave_channel(struct device_node *np, char *name) { return NULL; } -static struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_spec, +static inline struct dma_chan *of_dma_simple_xlate(struct of_phandle_args *dma_spec, struct of_dma *ofdma) { return NULL; -- cgit v1.2.3 From a14acb4ac2a1486f6633c55eb7f7ded07f3ec9fc Mon Sep 17 00:00:00 2001 From: Barry Song Date: Tue, 6 Nov 2012 21:32:39 +0800 Subject: DMAEngine: add dmaengine_prep_interleaved_dma wrapper for interleaved api commit b14dab792dee(DMAEngine: Define interleaved transfer request api) adds interleaved request api, this patch adds the dmaengine_prep_interleaved_dma just like we have dmaengine_prep_ for other modes to avoid drivers call: xxx_chan->device->device_prep_interleaved_dma(). Signed-off-by: Barry Song Cc: Jassi Brar Signed-off-by: Vinod Koul --- include/linux/dmaengine.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 4c8643794e0d..3aa76dbed166 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -660,6 +660,13 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_cyclic( period_len, dir, flags, NULL); } +static inline struct dma_async_tx_descriptor *dmaengine_prep_interleaved_dma( + struct dma_chan *chan, struct dma_interleaved_template *xt, + unsigned long flags) +{ + return chan->device->device_prep_interleaved_dma(chan, xt, flags); +} + static inline int dmaengine_terminate_all(struct dma_chan *chan) { return dmaengine_device_control(chan, DMA_TERMINATE_ALL, 0); -- cgit v1.2.3 From 944ea4dd38b8575e30a5699633c81945bff1864d Mon Sep 17 00:00:00 2001 From: Jon Mason Date: Sun, 11 Nov 2012 23:03:20 +0000 Subject: dmatest: Fix NULL pointer dereference on ioat device_control is an optional and not implemented in all DMA drivers. Any calls to these will result in a NULL pointer dereference. dmatest makes two of these calls when completing the kernel thread and removing the module. These are corrected by calling the dmaengine_device_control wrapper and checking for a non-existant device_control function pointer there. Signed-off-by: Jon Mason CC: Vinod Koul CC: Dan Williams Reviewed-by: Viresh Kumar Signed-off-by: Vinod Koul --- include/linux/dmaengine.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 3aa76dbed166..be6e95395b11 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -608,7 +608,10 @@ static inline int dmaengine_device_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, unsigned long arg) { - return chan->device->device_control(chan, cmd, arg); + if (chan->device->device_control) + return chan->device->device_control(chan, cmd, arg); + else + return -ENOSYS; } static inline int dmaengine_slave_config(struct dma_chan *chan, -- cgit v1.2.3 From b9ee86830f34737a08deead93872a79a37419a13 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Thu, 8 Nov 2012 09:59:54 +0000 Subject: dmaengine: remove dma_async_memcpy_pending() macro Just use dma_async_issue_pending() directly. Cc: Vinod Koul Cc: Tomasz Figa Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Kyungmin Park Signed-off-by: Dan Williams --- include/linux/dmaengine.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index be6e95395b11..cd15958d4d1d 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -901,8 +901,6 @@ static inline void dma_async_issue_pending(struct dma_chan *chan) chan->device->device_issue_pending(chan); } -#define dma_async_memcpy_issue_pending(chan) dma_async_issue_pending(chan) - /** * dma_async_is_tx_complete - poll for transaction completion * @chan: DMA channel -- cgit v1.2.3 From e239345f642e6a255d0ba1e3d92c2f9ec5a44fbe Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Thu, 8 Nov 2012 10:01:01 +0000 Subject: dmaengine: remove dma_async_memcpy_complete() macro Just use dma_async_is_tx_complete() directly. Cc: Vinod Koul Cc: Tomasz Figa Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Kyungmin Park Signed-off-by: Dan Williams --- include/linux/dmaengine.h | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index cd15958d4d1d..4ca9cf73ad3f 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -926,16 +926,13 @@ static inline enum dma_status dma_async_is_tx_complete(struct dma_chan *chan, return status; } -#define dma_async_memcpy_complete(chan, cookie, last, used)\ - dma_async_is_tx_complete(chan, cookie, last, used) - /** * dma_async_is_complete - test a cookie against chan state * @cookie: transaction identifier to test status of * @last_complete: last know completed transaction * @last_used: last cookie value handed out * - * dma_async_is_complete() is used in dma_async_memcpy_complete() + * dma_async_is_complete() is used in dma_async_is_tx_complete() * the test logic is separated for lightweight testing of multiple cookies */ static inline enum dma_status dma_async_is_complete(dma_cookie_t cookie, -- cgit v1.2.3 From e909c682d04e55e77a3c9d158e7dc36027195493 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Mon, 7 Jan 2013 10:57:14 +0100 Subject: [media] coda: Fix build due to iram.h rename commit c045e3f13 (ARM: imx: include iram.h rather than mach/iram.h) changed the location of iram.h, which causes the following build error when building the coda driver: drivers/media/platform/coda.c:27:23: error: mach/iram.h: No such file or directory drivers/media/platform/coda.c: In function 'coda_probe': drivers/media/platform/coda.c:2000: error: implicit declaration of function 'iram_alloc' drivers/media/platform/coda.c:2001: warning: assignment makes pointer from integer without a cast drivers/media/platform/coda.c: In function 'coda_remove': drivers/media/platform/coda.c:2024: error: implicit declaration of function 'iram_free' Since the content of iram.h is not imx specific, move it to include/linux/platform_data/imx-iram.h instead. This is an intermediate solution until the i.MX iram allocator is converted to the generic SRAM allocator. Signed-off-by: Sascha Hauer Acked-by: Mauro Carvalho Chehab --- include/linux/platform_data/imx-iram.h | 41 ++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 include/linux/platform_data/imx-iram.h (limited to 'include/linux') diff --git a/include/linux/platform_data/imx-iram.h b/include/linux/platform_data/imx-iram.h new file mode 100644 index 000000000000..022690c33702 --- /dev/null +++ b/include/linux/platform_data/imx-iram.h @@ -0,0 +1,41 @@ +/* + * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, + * MA 02110-1301, USA. + */ +#include + +#ifdef CONFIG_IRAM_ALLOC + +int __init iram_init(unsigned long base, unsigned long size); +void __iomem *iram_alloc(unsigned int size, unsigned long *dma_addr); +void iram_free(unsigned long dma_addr, unsigned int size); + +#else + +static inline int __init iram_init(unsigned long base, unsigned long size) +{ + return -ENOMEM; +} + +static inline void __iomem *iram_alloc(unsigned int size, unsigned long *dma_addr) +{ + return NULL; +} + +static inline void iram_free(unsigned long base, unsigned long size) {} + +#endif -- cgit v1.2.3 From 851bacf5902cad15f9bb789d278a1ee9608c8f25 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Mon, 7 Jan 2013 12:44:33 +0200 Subject: spi/pxa2xx: embed the ssp_device to platform data The spi-pxa2xx-pci glue driver had to implement pxa_ssp_request()/free() in order to support the spi-pxa2xx platform driver. Since the ACPI enabled platforms can use the same platform driver we would need to implement pxa_ssp_request()/free() in some central place that can be shared by the ACPI and PCI glue code. Instead of doing that we can make pxa_ssp_request()/free() to be available only when CONFIG_ARCH_PXA is set. On other arches these are being stubbed out in preference to passing the ssp_device from the platform data directly. We also change the SPI bus number to be taken from ssp->port_id instead of platform device id. This way the supporting code that passes the ssp can decide the number (or it can set it to the same as pdev->id). Signed-off-by: Mika Westerberg Signed-off-by: Mark Brown --- include/linux/pxa2xx_ssp.h | 9 +++++++++ include/linux/spi/pxa2xx_spi.h | 3 +++ 2 files changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pxa2xx_ssp.h b/include/linux/pxa2xx_ssp.h index f36632061c66..065e7f6c3ad7 100644 --- a/include/linux/pxa2xx_ssp.h +++ b/include/linux/pxa2xx_ssp.h @@ -206,6 +206,15 @@ static inline u32 pxa_ssp_read_reg(struct ssp_device *dev, u32 reg) return __raw_readl(dev->mmio_base + reg); } +#ifdef CONFIG_ARCH_PXA struct ssp_device *pxa_ssp_request(int port, const char *label); void pxa_ssp_free(struct ssp_device *); +#else +static inline struct ssp_device *pxa_ssp_request(int port, const char *label) +{ + return NULL; +} +static inline void pxa_ssp_free(struct ssp_device *ssp) {} +#endif + #endif diff --git a/include/linux/spi/pxa2xx_spi.h b/include/linux/spi/pxa2xx_spi.h index c73d1445c77e..6b99f09b717d 100644 --- a/include/linux/spi/pxa2xx_spi.h +++ b/include/linux/spi/pxa2xx_spi.h @@ -28,6 +28,9 @@ struct pxa2xx_spi_master { u32 clock_enable; u16 num_chipselect; u8 enable_dma; + + /* For non-PXA arches */ + struct ssp_device ssp; }; /* spi_board_info.controller_data for SPI slave devices, -- cgit v1.2.3 From 52494535103986dbbf689b44d8c2c7efe2132b16 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Wed, 14 Nov 2012 16:26:40 -0800 Subject: rcu: Reduce rcutorture tracing Currently, rcutorture traces every read-side access. This can be problematic because even a two-minute rcutorture run on a two-CPU system can generate 28,853,363 reads. Normally, only a failing read is of interest, so this commit traces adjusts rcutorture's tracing to only trace failing reads. The resulting event tracing records the time and the ->completed value captured at the beginning of the RCU read-side critical section, allowing correlation with other event-tracing messages. Signed-off-by: Paul E. McKenney Signed-off-by: Paul E. McKenney Reviewed-by: Josh Triplett [ paulmck: Add fix to build problem located by Randy Dunlap based on diagnosis by Steven Rostedt. ] --- include/linux/rcupdate.h | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 275aa3f1062d..7f89cea596e1 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -53,7 +53,10 @@ extern int rcutorture_runnable; /* for sysctl */ extern void rcutorture_record_test_transition(void); extern void rcutorture_record_progress(unsigned long vernum); extern void do_trace_rcu_torture_read(char *rcutorturename, - struct rcu_head *rhp); + struct rcu_head *rhp, + unsigned long secs, + unsigned long c_old, + unsigned long c); #else static inline void rcutorture_record_test_transition(void) { @@ -63,9 +66,13 @@ static inline void rcutorture_record_progress(unsigned long vernum) } #ifdef CONFIG_RCU_TRACE extern void do_trace_rcu_torture_read(char *rcutorturename, - struct rcu_head *rhp); + struct rcu_head *rhp, + unsigned long secs, + unsigned long c_old, + unsigned long c); #else -#define do_trace_rcu_torture_read(rcutorturename, rhp) do { } while (0) +#define do_trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \ + do { } while (0) #endif #endif -- cgit v1.2.3 From 20259849bb1ac1ffb0156eb359810e8b99cb644d Mon Sep 17 00:00:00 2001 From: George Zhang Date: Tue, 8 Jan 2013 15:55:59 -0800 Subject: VMCI: Some header and config files. VMCI head config patch Adds all the necessary files to enable building of the VMCI module with the Linux Makefiles and Kconfig systems. Also adds the header files used for building modules against the driver. Signed-off-by: George Zhang Acked-by: Andy king Acked-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman --- include/linux/vmw_vmci_api.h | 82 ++++ include/linux/vmw_vmci_defs.h | 880 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 962 insertions(+) create mode 100644 include/linux/vmw_vmci_api.h create mode 100644 include/linux/vmw_vmci_defs.h (limited to 'include/linux') diff --git a/include/linux/vmw_vmci_api.h b/include/linux/vmw_vmci_api.h new file mode 100644 index 000000000000..023430e265fe --- /dev/null +++ b/include/linux/vmw_vmci_api.h @@ -0,0 +1,82 @@ +/* + * VMware VMCI Driver + * + * Copyright (C) 2012 VMware, Inc. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation version 2 and no later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#ifndef __VMW_VMCI_API_H__ +#define __VMW_VMCI_API_H__ + +#include +#include + +#undef VMCI_KERNEL_API_VERSION +#define VMCI_KERNEL_API_VERSION_1 1 +#define VMCI_KERNEL_API_VERSION_2 2 +#define VMCI_KERNEL_API_VERSION VMCI_KERNEL_API_VERSION_2 + +typedef void (vmci_device_shutdown_fn) (void *device_registration, + void *user_data); + +int vmci_datagram_create_handle(u32 resource_id, u32 flags, + vmci_datagram_recv_cb recv_cb, + void *client_data, + struct vmci_handle *out_handle); +int vmci_datagram_create_handle_priv(u32 resource_id, u32 flags, u32 priv_flags, + vmci_datagram_recv_cb recv_cb, + void *client_data, + struct vmci_handle *out_handle); +int vmci_datagram_destroy_handle(struct vmci_handle handle); +int vmci_datagram_send(struct vmci_datagram *msg); +int vmci_doorbell_create(struct vmci_handle *handle, u32 flags, + u32 priv_flags, + vmci_callback notify_cb, void *client_data); +int vmci_doorbell_destroy(struct vmci_handle handle); +int vmci_doorbell_notify(struct vmci_handle handle, u32 priv_flags); +u32 vmci_get_context_id(void); +bool vmci_is_context_owner(u32 context_id, kuid_t uid); + +int vmci_event_subscribe(u32 event, + vmci_event_cb callback, void *callback_data, + u32 *subid); +int vmci_event_unsubscribe(u32 subid); +u32 vmci_context_get_priv_flags(u32 context_id); +int vmci_qpair_alloc(struct vmci_qp **qpair, + struct vmci_handle *handle, + u64 produce_qsize, + u64 consume_qsize, + u32 peer, u32 flags, u32 priv_flags); +int vmci_qpair_detach(struct vmci_qp **qpair); +int vmci_qpair_get_produce_indexes(const struct vmci_qp *qpair, + u64 *producer_tail, + u64 *consumer_head); +int vmci_qpair_get_consume_indexes(const struct vmci_qp *qpair, + u64 *consumer_tail, + u64 *producer_head); +s64 vmci_qpair_produce_free_space(const struct vmci_qp *qpair); +s64 vmci_qpair_produce_buf_ready(const struct vmci_qp *qpair); +s64 vmci_qpair_consume_free_space(const struct vmci_qp *qpair); +s64 vmci_qpair_consume_buf_ready(const struct vmci_qp *qpair); +ssize_t vmci_qpair_enqueue(struct vmci_qp *qpair, + const void *buf, size_t buf_size, int mode); +ssize_t vmci_qpair_dequeue(struct vmci_qp *qpair, + void *buf, size_t buf_size, int mode); +ssize_t vmci_qpair_peek(struct vmci_qp *qpair, void *buf, size_t buf_size, + int mode); +ssize_t vmci_qpair_enquev(struct vmci_qp *qpair, + void *iov, size_t iov_size, int mode); +ssize_t vmci_qpair_dequev(struct vmci_qp *qpair, + void *iov, size_t iov_size, int mode); +ssize_t vmci_qpair_peekv(struct vmci_qp *qpair, void *iov, size_t iov_size, + int mode); + +#endif /* !__VMW_VMCI_API_H__ */ diff --git a/include/linux/vmw_vmci_defs.h b/include/linux/vmw_vmci_defs.h new file mode 100644 index 000000000000..65ac54c61c18 --- /dev/null +++ b/include/linux/vmw_vmci_defs.h @@ -0,0 +1,880 @@ +/* + * VMware VMCI Driver + * + * Copyright (C) 2012 VMware, Inc. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation version 2 and no later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#ifndef _VMW_VMCI_DEF_H_ +#define _VMW_VMCI_DEF_H_ + +#include + +/* Register offsets. */ +#define VMCI_STATUS_ADDR 0x00 +#define VMCI_CONTROL_ADDR 0x04 +#define VMCI_ICR_ADDR 0x08 +#define VMCI_IMR_ADDR 0x0c +#define VMCI_DATA_OUT_ADDR 0x10 +#define VMCI_DATA_IN_ADDR 0x14 +#define VMCI_CAPS_ADDR 0x18 +#define VMCI_RESULT_LOW_ADDR 0x1c +#define VMCI_RESULT_HIGH_ADDR 0x20 + +/* Max number of devices. */ +#define VMCI_MAX_DEVICES 1 + +/* Status register bits. */ +#define VMCI_STATUS_INT_ON 0x1 + +/* Control register bits. */ +#define VMCI_CONTROL_RESET 0x1 +#define VMCI_CONTROL_INT_ENABLE 0x2 +#define VMCI_CONTROL_INT_DISABLE 0x4 + +/* Capabilities register bits. */ +#define VMCI_CAPS_HYPERCALL 0x1 +#define VMCI_CAPS_GUESTCALL 0x2 +#define VMCI_CAPS_DATAGRAM 0x4 +#define VMCI_CAPS_NOTIFICATIONS 0x8 + +/* Interrupt Cause register bits. */ +#define VMCI_ICR_DATAGRAM 0x1 +#define VMCI_ICR_NOTIFICATION 0x2 + +/* Interrupt Mask register bits. */ +#define VMCI_IMR_DATAGRAM 0x1 +#define VMCI_IMR_NOTIFICATION 0x2 + +/* Interrupt type. */ +enum { + VMCI_INTR_TYPE_INTX = 0, + VMCI_INTR_TYPE_MSI = 1, + VMCI_INTR_TYPE_MSIX = 2, +}; + +/* Maximum MSI/MSI-X interrupt vectors in the device. */ +#define VMCI_MAX_INTRS 2 + +/* + * Supported interrupt vectors. There is one for each ICR value above, + * but here they indicate the position in the vector array/message ID. + */ +enum { + VMCI_INTR_DATAGRAM = 0, + VMCI_INTR_NOTIFICATION = 1, +}; + +/* + * A single VMCI device has an upper limit of 128MB on the amount of + * memory that can be used for queue pairs. + */ +#define VMCI_MAX_GUEST_QP_MEMORY (128 * 1024 * 1024) + +/* + * Queues with pre-mapped data pages must be small, so that we don't pin + * too much kernel memory (especially on vmkernel). We limit a queuepair to + * 32 KB, or 16 KB per queue for symmetrical pairs. + */ +#define VMCI_MAX_PINNED_QP_MEMORY (32 * 1024) + +/* + * We have a fixed set of resource IDs available in the VMX. + * This allows us to have a very simple implementation since we statically + * know how many will create datagram handles. If a new caller arrives and + * we have run out of slots we can manually increment the maximum size of + * available resource IDs. + * + * VMCI reserved hypervisor datagram resource IDs. + */ +enum { + VMCI_RESOURCES_QUERY = 0, + VMCI_GET_CONTEXT_ID = 1, + VMCI_SET_NOTIFY_BITMAP = 2, + VMCI_DOORBELL_LINK = 3, + VMCI_DOORBELL_UNLINK = 4, + VMCI_DOORBELL_NOTIFY = 5, + /* + * VMCI_DATAGRAM_REQUEST_MAP and VMCI_DATAGRAM_REMOVE_MAP are + * obsoleted by the removal of VM to VM communication. + */ + VMCI_DATAGRAM_REQUEST_MAP = 6, + VMCI_DATAGRAM_REMOVE_MAP = 7, + VMCI_EVENT_SUBSCRIBE = 8, + VMCI_EVENT_UNSUBSCRIBE = 9, + VMCI_QUEUEPAIR_ALLOC = 10, + VMCI_QUEUEPAIR_DETACH = 11, + + /* + * VMCI_VSOCK_VMX_LOOKUP was assigned to 12 for Fusion 3.0/3.1, + * WS 7.0/7.1 and ESX 4.1 + */ + VMCI_HGFS_TRANSPORT = 13, + VMCI_UNITY_PBRPC_REGISTER = 14, + VMCI_RPC_PRIVILEGED = 15, + VMCI_RPC_UNPRIVILEGED = 16, + VMCI_RESOURCE_MAX = 17, +}; + +/* + * struct vmci_handle - Ownership information structure + * @context: The VMX context ID. + * @resource: The resource ID (used for locating in resource hash). + * + * The vmci_handle structure is used to track resources used within + * vmw_vmci. + */ +struct vmci_handle { + u32 context; + u32 resource; +}; + +#define vmci_make_handle(_cid, _rid) \ + (struct vmci_handle){ .context = _cid, .resource = _rid } + +static inline bool vmci_handle_is_equal(struct vmci_handle h1, + struct vmci_handle h2) +{ + return h1.context == h2.context && h1.resource == h2.resource; +} + +#define VMCI_INVALID_ID ~0 +static const struct vmci_handle VMCI_INVALID_HANDLE = { + .context = VMCI_INVALID_ID, + .resource = VMCI_INVALID_ID +}; + +static inline bool vmci_handle_is_invalid(struct vmci_handle h) +{ + return vmci_handle_is_equal(h, VMCI_INVALID_HANDLE); +} + +/* + * The below defines can be used to send anonymous requests. + * This also indicates that no response is expected. + */ +#define VMCI_ANON_SRC_CONTEXT_ID VMCI_INVALID_ID +#define VMCI_ANON_SRC_RESOURCE_ID VMCI_INVALID_ID +static const struct vmci_handle VMCI_ANON_SRC_HANDLE = { + .context = VMCI_ANON_SRC_CONTEXT_ID, + .resource = VMCI_ANON_SRC_RESOURCE_ID +}; + +/* The lowest 16 context ids are reserved for internal use. */ +#define VMCI_RESERVED_CID_LIMIT ((u32) 16) + +/* + * Hypervisor context id, used for calling into hypervisor + * supplied services from the VM. + */ +#define VMCI_HYPERVISOR_CONTEXT_ID 0 + +/* + * Well-known context id, a logical context that contains a set of + * well-known services. This context ID is now obsolete. + */ +#define VMCI_WELL_KNOWN_CONTEXT_ID 1 + +/* + * Context ID used by host endpoints. + */ +#define VMCI_HOST_CONTEXT_ID 2 + +#define VMCI_CONTEXT_IS_VM(_cid) (VMCI_INVALID_ID != (_cid) && \ + (_cid) > VMCI_HOST_CONTEXT_ID) + +/* + * The VMCI_CONTEXT_RESOURCE_ID is used together with vmci_make_handle to make + * handles that refer to a specific context. + */ +#define VMCI_CONTEXT_RESOURCE_ID 0 + +/* + * VMCI error codes. + */ +enum { + VMCI_SUCCESS_QUEUEPAIR_ATTACH = 5, + VMCI_SUCCESS_QUEUEPAIR_CREATE = 4, + VMCI_SUCCESS_LAST_DETACH = 3, + VMCI_SUCCESS_ACCESS_GRANTED = 2, + VMCI_SUCCESS_ENTRY_DEAD = 1, + VMCI_SUCCESS = 0, + VMCI_ERROR_INVALID_RESOURCE = (-1), + VMCI_ERROR_INVALID_ARGS = (-2), + VMCI_ERROR_NO_MEM = (-3), + VMCI_ERROR_DATAGRAM_FAILED = (-4), + VMCI_ERROR_MORE_DATA = (-5), + VMCI_ERROR_NO_MORE_DATAGRAMS = (-6), + VMCI_ERROR_NO_ACCESS = (-7), + VMCI_ERROR_NO_HANDLE = (-8), + VMCI_ERROR_DUPLICATE_ENTRY = (-9), + VMCI_ERROR_DST_UNREACHABLE = (-10), + VMCI_ERROR_PAYLOAD_TOO_LARGE = (-11), + VMCI_ERROR_INVALID_PRIV = (-12), + VMCI_ERROR_GENERIC = (-13), + VMCI_ERROR_PAGE_ALREADY_SHARED = (-14), + VMCI_ERROR_CANNOT_SHARE_PAGE = (-15), + VMCI_ERROR_CANNOT_UNSHARE_PAGE = (-16), + VMCI_ERROR_NO_PROCESS = (-17), + VMCI_ERROR_NO_DATAGRAM = (-18), + VMCI_ERROR_NO_RESOURCES = (-19), + VMCI_ERROR_UNAVAILABLE = (-20), + VMCI_ERROR_NOT_FOUND = (-21), + VMCI_ERROR_ALREADY_EXISTS = (-22), + VMCI_ERROR_NOT_PAGE_ALIGNED = (-23), + VMCI_ERROR_INVALID_SIZE = (-24), + VMCI_ERROR_REGION_ALREADY_SHARED = (-25), + VMCI_ERROR_TIMEOUT = (-26), + VMCI_ERROR_DATAGRAM_INCOMPLETE = (-27), + VMCI_ERROR_INCORRECT_IRQL = (-28), + VMCI_ERROR_EVENT_UNKNOWN = (-29), + VMCI_ERROR_OBSOLETE = (-30), + VMCI_ERROR_QUEUEPAIR_MISMATCH = (-31), + VMCI_ERROR_QUEUEPAIR_NOTSET = (-32), + VMCI_ERROR_QUEUEPAIR_NOTOWNER = (-33), + VMCI_ERROR_QUEUEPAIR_NOTATTACHED = (-34), + VMCI_ERROR_QUEUEPAIR_NOSPACE = (-35), + VMCI_ERROR_QUEUEPAIR_NODATA = (-36), + VMCI_ERROR_BUSMEM_INVALIDATION = (-37), + VMCI_ERROR_MODULE_NOT_LOADED = (-38), + VMCI_ERROR_DEVICE_NOT_FOUND = (-39), + VMCI_ERROR_QUEUEPAIR_NOT_READY = (-40), + VMCI_ERROR_WOULD_BLOCK = (-41), + + /* VMCI clients should return error code within this range */ + VMCI_ERROR_CLIENT_MIN = (-500), + VMCI_ERROR_CLIENT_MAX = (-550), + + /* Internal error codes. */ + VMCI_SHAREDMEM_ERROR_BAD_CONTEXT = (-1000), +}; + +/* VMCI reserved events. */ +enum { + /* Only applicable to guest endpoints */ + VMCI_EVENT_CTX_ID_UPDATE = 0, + + /* Applicable to guest and host */ + VMCI_EVENT_CTX_REMOVED = 1, + + /* Only applicable to guest endpoints */ + VMCI_EVENT_QP_RESUMED = 2, + + /* Applicable to guest and host */ + VMCI_EVENT_QP_PEER_ATTACH = 3, + + /* Applicable to guest and host */ + VMCI_EVENT_QP_PEER_DETACH = 4, + + /* + * Applicable to VMX and vmk. On vmk, + * this event has the Context payload type. + */ + VMCI_EVENT_MEM_ACCESS_ON = 5, + + /* + * Applicable to VMX and vmk. Same as + * above for the payload type. + */ + VMCI_EVENT_MEM_ACCESS_OFF = 6, + VMCI_EVENT_MAX = 7, +}; + +/* + * Of the above events, a few are reserved for use in the VMX, and + * other endpoints (guest and host kernel) should not use them. For + * the rest of the events, we allow both host and guest endpoints to + * subscribe to them, to maintain the same API for host and guest + * endpoints. + */ +#define VMCI_EVENT_VALID_VMX(_event) ((_event) == VMCI_EVENT_MEM_ACCESS_ON || \ + (_event) == VMCI_EVENT_MEM_ACCESS_OFF) + +#define VMCI_EVENT_VALID(_event) ((_event) < VMCI_EVENT_MAX && \ + !VMCI_EVENT_VALID_VMX(_event)) + +/* Reserved guest datagram resource ids. */ +#define VMCI_EVENT_HANDLER 0 + +/* + * VMCI coarse-grained privileges (per context or host + * process/endpoint. An entity with the restricted flag is only + * allowed to interact with the hypervisor and trusted entities. + */ +enum { + VMCI_NO_PRIVILEGE_FLAGS = 0, + VMCI_PRIVILEGE_FLAG_RESTRICTED = 1, + VMCI_PRIVILEGE_FLAG_TRUSTED = 2, + VMCI_PRIVILEGE_ALL_FLAGS = (VMCI_PRIVILEGE_FLAG_RESTRICTED | + VMCI_PRIVILEGE_FLAG_TRUSTED), + VMCI_DEFAULT_PROC_PRIVILEGE_FLAGS = VMCI_NO_PRIVILEGE_FLAGS, + VMCI_LEAST_PRIVILEGE_FLAGS = VMCI_PRIVILEGE_FLAG_RESTRICTED, + VMCI_MAX_PRIVILEGE_FLAGS = VMCI_PRIVILEGE_FLAG_TRUSTED, +}; + +/* 0 through VMCI_RESERVED_RESOURCE_ID_MAX are reserved. */ +#define VMCI_RESERVED_RESOURCE_ID_MAX 1023 + +/* + * Driver version. + * + * Increment major version when you make an incompatible change. + * Compatibility goes both ways (old driver with new executable + * as well as new driver with old executable). + */ + +/* Never change VMCI_VERSION_SHIFT_WIDTH */ +#define VMCI_VERSION_SHIFT_WIDTH 16 +#define VMCI_MAKE_VERSION(_major, _minor) \ + ((_major) << VMCI_VERSION_SHIFT_WIDTH | (u16) (_minor)) + +#define VMCI_VERSION_MAJOR(v) ((u32) (v) >> VMCI_VERSION_SHIFT_WIDTH) +#define VMCI_VERSION_MINOR(v) ((u16) (v)) + +/* + * VMCI_VERSION is always the current version. Subsequently listed + * versions are ways of detecting previous versions of the connecting + * application (i.e., VMX). + * + * VMCI_VERSION_NOVMVM: This version removed support for VM to VM + * communication. + * + * VMCI_VERSION_NOTIFY: This version introduced doorbell notification + * support. + * + * VMCI_VERSION_HOSTQP: This version introduced host end point support + * for hosted products. + * + * VMCI_VERSION_PREHOSTQP: This is the version prior to the adoption of + * support for host end-points. + * + * VMCI_VERSION_PREVERS2: This fictional version number is intended to + * represent the version of a VMX which doesn't call into the driver + * with ioctl VERSION2 and thus doesn't establish its version with the + * driver. + */ + +#define VMCI_VERSION VMCI_VERSION_NOVMVM +#define VMCI_VERSION_NOVMVM VMCI_MAKE_VERSION(11, 0) +#define VMCI_VERSION_NOTIFY VMCI_MAKE_VERSION(10, 0) +#define VMCI_VERSION_HOSTQP VMCI_MAKE_VERSION(9, 0) +#define VMCI_VERSION_PREHOSTQP VMCI_MAKE_VERSION(8, 0) +#define VMCI_VERSION_PREVERS2 VMCI_MAKE_VERSION(1, 0) + +#define VMCI_SOCKETS_MAKE_VERSION(_p) \ + ((((_p)[0] & 0xFF) << 24) | (((_p)[1] & 0xFF) << 16) | ((_p)[2])) + +/* + * The VMCI IOCTLs. We use identity code 7, as noted in ioctl-number.h, and + * we start at sequence 9f. This gives us the same values that our shipping + * products use, starting at 1951, provided we leave out the direction and + * structure size. Note that VMMon occupies the block following us, starting + * at 2001. + */ +#define IOCTL_VMCI_VERSION _IO(7, 0x9f) /* 1951 */ +#define IOCTL_VMCI_INIT_CONTEXT _IO(7, 0xa0) +#define IOCTL_VMCI_QUEUEPAIR_SETVA _IO(7, 0xa4) +#define IOCTL_VMCI_NOTIFY_RESOURCE _IO(7, 0xa5) +#define IOCTL_VMCI_NOTIFICATIONS_RECEIVE _IO(7, 0xa6) +#define IOCTL_VMCI_VERSION2 _IO(7, 0xa7) +#define IOCTL_VMCI_QUEUEPAIR_ALLOC _IO(7, 0xa8) +#define IOCTL_VMCI_QUEUEPAIR_SETPAGEFILE _IO(7, 0xa9) +#define IOCTL_VMCI_QUEUEPAIR_DETACH _IO(7, 0xaa) +#define IOCTL_VMCI_DATAGRAM_SEND _IO(7, 0xab) +#define IOCTL_VMCI_DATAGRAM_RECEIVE _IO(7, 0xac) +#define IOCTL_VMCI_CTX_ADD_NOTIFICATION _IO(7, 0xaf) +#define IOCTL_VMCI_CTX_REMOVE_NOTIFICATION _IO(7, 0xb0) +#define IOCTL_VMCI_CTX_GET_CPT_STATE _IO(7, 0xb1) +#define IOCTL_VMCI_CTX_SET_CPT_STATE _IO(7, 0xb2) +#define IOCTL_VMCI_GET_CONTEXT_ID _IO(7, 0xb3) +#define IOCTL_VMCI_SOCKETS_VERSION _IO(7, 0xb4) +#define IOCTL_VMCI_SOCKETS_GET_AF_VALUE _IO(7, 0xb8) +#define IOCTL_VMCI_SOCKETS_GET_LOCAL_CID _IO(7, 0xb9) +#define IOCTL_VMCI_SET_NOTIFY _IO(7, 0xcb) /* 1995 */ +/*IOCTL_VMMON_START _IO(7, 0xd1)*/ /* 2001 */ + +/* + * struct vmci_queue_header - VMCI Queue Header information. + * + * A Queue cannot stand by itself as designed. Each Queue's header + * contains a pointer into itself (the producer_tail) and into its peer + * (consumer_head). The reason for the separation is one of + * accessibility: Each end-point can modify two things: where the next + * location to enqueue is within its produce_q (producer_tail); and + * where the next dequeue location is in its consume_q (consumer_head). + * + * An end-point cannot modify the pointers of its peer (guest to + * guest; NOTE that in the host both queue headers are mapped r/w). + * But, each end-point needs read access to both Queue header + * structures in order to determine how much space is used (or left) + * in the Queue. This is because for an end-point to know how full + * its produce_q is, it needs to use the consumer_head that points into + * the produce_q but -that- consumer_head is in the Queue header for + * that end-points consume_q. + * + * Thoroughly confused? Sorry. + * + * producer_tail: the point to enqueue new entrants. When you approach + * a line in a store, for example, you walk up to the tail. + * + * consumer_head: the point in the queue from which the next element is + * dequeued. In other words, who is next in line is he who is at the + * head of the line. + * + * Also, producer_tail points to an empty byte in the Queue, whereas + * consumer_head points to a valid byte of data (unless producer_tail == + * consumer_head in which case consumer_head does not point to a valid + * byte of data). + * + * For a queue of buffer 'size' bytes, the tail and head pointers will be in + * the range [0, size-1]. + * + * If produce_q_header->producer_tail == consume_q_header->consumer_head + * then the produce_q is empty. + */ +struct vmci_queue_header { + /* All fields are 64bit and aligned. */ + struct vmci_handle handle; /* Identifier. */ + atomic64_t producer_tail; /* Offset in this queue. */ + atomic64_t consumer_head; /* Offset in peer queue. */ +}; + +/* + * struct vmci_datagram - Base struct for vmci datagrams. + * @dst: A vmci_handle that tracks the destination of the datagram. + * @src: A vmci_handle that tracks the source of the datagram. + * @payload_size: The size of the payload. + * + * vmci_datagram structs are used when sending vmci datagrams. They include + * the necessary source and destination information to properly route + * the information along with the size of the package. + */ +struct vmci_datagram { + struct vmci_handle dst; + struct vmci_handle src; + u64 payload_size; +}; + +/* + * Second flag is for creating a well-known handle instead of a per context + * handle. Next flag is for deferring datagram delivery, so that the + * datagram callback is invoked in a delayed context (not interrupt context). + */ +#define VMCI_FLAG_DG_NONE 0 +#define VMCI_FLAG_WELLKNOWN_DG_HND 0x1 +#define VMCI_FLAG_ANYCID_DG_HND 0x2 +#define VMCI_FLAG_DG_DELAYED_CB 0x4 + +/* + * Maximum supported size of a VMCI datagram for routable datagrams. + * Datagrams going to the hypervisor are allowed to be larger. + */ +#define VMCI_MAX_DG_SIZE (17 * 4096) +#define VMCI_MAX_DG_PAYLOAD_SIZE (VMCI_MAX_DG_SIZE - \ + sizeof(struct vmci_datagram)) +#define VMCI_DG_PAYLOAD(_dg) (void *)((char *)(_dg) + \ + sizeof(struct vmci_datagram)) +#define VMCI_DG_HEADERSIZE sizeof(struct vmci_datagram) +#define VMCI_DG_SIZE(_dg) (VMCI_DG_HEADERSIZE + (size_t)(_dg)->payload_size) +#define VMCI_DG_SIZE_ALIGNED(_dg) ((VMCI_DG_SIZE(_dg) + 7) & (~((size_t) 0x7))) +#define VMCI_MAX_DATAGRAM_QUEUE_SIZE (VMCI_MAX_DG_SIZE * 2) + +struct vmci_event_payload_qp { + struct vmci_handle handle; /* queue_pair handle. */ + u32 peer_id; /* Context id of attaching/detaching VM. */ + u32 _pad; +}; + +/* Flags for VMCI queue_pair API. */ +enum { + /* Fail alloc if QP not created by peer. */ + VMCI_QPFLAG_ATTACH_ONLY = 1 << 0, + + /* Only allow attaches from local context. */ + VMCI_QPFLAG_LOCAL = 1 << 1, + + /* Host won't block when guest is quiesced. */ + VMCI_QPFLAG_NONBLOCK = 1 << 2, + + /* Pin data pages in ESX. Used with NONBLOCK */ + VMCI_QPFLAG_PINNED = 1 << 3, + + /* Update the following flag when adding new flags. */ + VMCI_QP_ALL_FLAGS = (VMCI_QPFLAG_ATTACH_ONLY | VMCI_QPFLAG_LOCAL | + VMCI_QPFLAG_NONBLOCK | VMCI_QPFLAG_PINNED), + + /* Convenience flags */ + VMCI_QP_ASYMM = (VMCI_QPFLAG_NONBLOCK | VMCI_QPFLAG_PINNED), + VMCI_QP_ASYMM_PEER = (VMCI_QPFLAG_ATTACH_ONLY | VMCI_QP_ASYMM), +}; + +/* + * We allow at least 1024 more event datagrams from the hypervisor past the + * normally allowed datagrams pending for a given context. We define this + * limit on event datagrams from the hypervisor to guard against DoS attack + * from a malicious VM which could repeatedly attach to and detach from a queue + * pair, causing events to be queued at the destination VM. However, the rate + * at which such events can be generated is small since it requires a VM exit + * and handling of queue pair attach/detach call at the hypervisor. Event + * datagrams may be queued up at the destination VM if it has interrupts + * disabled or if it is not draining events for some other reason. 1024 + * datagrams is a grossly conservative estimate of the time for which + * interrupts may be disabled in the destination VM, but at the same time does + * not exacerbate the memory pressure problem on the host by much (size of each + * event datagram is small). + */ +#define VMCI_MAX_DATAGRAM_AND_EVENT_QUEUE_SIZE \ + (VMCI_MAX_DATAGRAM_QUEUE_SIZE + \ + 1024 * (sizeof(struct vmci_datagram) + \ + sizeof(struct vmci_event_data_max))) + +/* + * Struct used for querying, via VMCI_RESOURCES_QUERY, the availability of + * hypervisor resources. Struct size is 16 bytes. All fields in struct are + * aligned to their natural alignment. + */ +struct vmci_resource_query_hdr { + struct vmci_datagram hdr; + u32 num_resources; + u32 _padding; +}; + +/* + * Convenience struct for negotiating vectors. Must match layout of + * VMCIResourceQueryHdr minus the struct vmci_datagram header. + */ +struct vmci_resource_query_msg { + u32 num_resources; + u32 _padding; + u32 resources[1]; +}; + +/* + * The maximum number of resources that can be queried using + * VMCI_RESOURCE_QUERY is 31, as the result is encoded in the lower 31 + * bits of a positive return value. Negative values are reserved for + * errors. + */ +#define VMCI_RESOURCE_QUERY_MAX_NUM 31 + +/* Maximum size for the VMCI_RESOURCE_QUERY request. */ +#define VMCI_RESOURCE_QUERY_MAX_SIZE \ + (sizeof(struct vmci_resource_query_hdr) + \ + sizeof(u32) * VMCI_RESOURCE_QUERY_MAX_NUM) + +/* + * Struct used for setting the notification bitmap. All fields in + * struct are aligned to their natural alignment. + */ +struct vmci_notify_bm_set_msg { + struct vmci_datagram hdr; + u32 bitmap_ppn; + u32 _pad; +}; + +/* + * Struct used for linking a doorbell handle with an index in the + * notify bitmap. All fields in struct are aligned to their natural + * alignment. + */ +struct vmci_doorbell_link_msg { + struct vmci_datagram hdr; + struct vmci_handle handle; + u64 notify_idx; +}; + +/* + * Struct used for unlinking a doorbell handle from an index in the + * notify bitmap. All fields in struct are aligned to their natural + * alignment. + */ +struct vmci_doorbell_unlink_msg { + struct vmci_datagram hdr; + struct vmci_handle handle; +}; + +/* + * Struct used for generating a notification on a doorbell handle. All + * fields in struct are aligned to their natural alignment. + */ +struct vmci_doorbell_notify_msg { + struct vmci_datagram hdr; + struct vmci_handle handle; +}; + +/* + * This struct is used to contain data for events. Size of this struct is a + * multiple of 8 bytes, and all fields are aligned to their natural alignment. + */ +struct vmci_event_data { + u32 event; /* 4 bytes. */ + u32 _pad; + /* Event payload is put here. */ +}; + +/* + * Define the different VMCI_EVENT payload data types here. All structs must + * be a multiple of 8 bytes, and fields must be aligned to their natural + * alignment. + */ +struct vmci_event_payld_ctx { + u32 context_id; /* 4 bytes. */ + u32 _pad; +}; + +struct vmci_event_payld_qp { + struct vmci_handle handle; /* queue_pair handle. */ + u32 peer_id; /* Context id of attaching/detaching VM. */ + u32 _pad; +}; + +/* + * We define the following struct to get the size of the maximum event + * data the hypervisor may send to the guest. If adding a new event + * payload type above, add it to the following struct too (inside the + * union). + */ +struct vmci_event_data_max { + struct vmci_event_data event_data; + union { + struct vmci_event_payld_ctx context_payload; + struct vmci_event_payld_qp qp_payload; + } ev_data_payload; +}; + +/* + * Struct used for VMCI_EVENT_SUBSCRIBE/UNSUBSCRIBE and + * VMCI_EVENT_HANDLER messages. Struct size is 32 bytes. All fields + * in struct are aligned to their natural alignment. + */ +struct vmci_event_msg { + struct vmci_datagram hdr; + + /* Has event type and payload. */ + struct vmci_event_data event_data; + + /* Payload gets put here. */ +}; + +/* Event with context payload. */ +struct vmci_event_ctx { + struct vmci_event_msg msg; + struct vmci_event_payld_ctx payload; +}; + +/* Event with QP payload. */ +struct vmci_event_qp { + struct vmci_event_msg msg; + struct vmci_event_payld_qp payload; +}; + +/* + * Structs used for queue_pair alloc and detach messages. We align fields of + * these structs to 64bit boundaries. + */ +struct vmci_qp_alloc_msg { + struct vmci_datagram hdr; + struct vmci_handle handle; + u32 peer; + u32 flags; + u64 produce_size; + u64 consume_size; + u64 num_ppns; + + /* List of PPNs placed here. */ +}; + +struct vmci_qp_detach_msg { + struct vmci_datagram hdr; + struct vmci_handle handle; +}; + +/* VMCI Doorbell API. */ +#define VMCI_FLAG_DELAYED_CB 0x01 + +typedef void (*vmci_callback) (void *client_data); + +/* + * struct vmci_qp - A vmw_vmci queue pair handle. + * + * This structure is used as a handle to a queue pair created by + * VMCI. It is intentionally left opaque to clients. + */ +struct vmci_qp; + +/* Callback needed for correctly waiting on events. */ +typedef int (*vmci_datagram_recv_cb) (void *client_data, + struct vmci_datagram *msg); + +/* VMCI Event API. */ +typedef void (*vmci_event_cb) (u32 sub_id, const struct vmci_event_data *ed, + void *client_data); + +/* + * We use the following inline function to access the payload data + * associated with an event data. + */ +static inline const void * +vmci_event_data_const_payload(const struct vmci_event_data *ev_data) +{ + return (const char *)ev_data + sizeof(*ev_data); +} + +static inline void *vmci_event_data_payload(struct vmci_event_data *ev_data) +{ + return (void *)vmci_event_data_const_payload(ev_data); +} + +/* + * Helper to add a given offset to a head or tail pointer. Wraps the + * value of the pointer around the max size of the queue. + */ +static inline void vmci_qp_add_pointer(atomic64_t *var, + size_t add, + u64 size) +{ + u64 new_val = atomic64_read(var); + + if (new_val >= size - add) + new_val -= size; + + new_val += add; + + atomic64_set(var, new_val); +} + +/* + * Helper routine to get the Producer Tail from the supplied queue. + */ +static inline u64 +vmci_q_header_producer_tail(const struct vmci_queue_header *q_header) +{ + struct vmci_queue_header *qh = (struct vmci_queue_header *)q_header; + return atomic64_read(&qh->producer_tail); +} + +/* + * Helper routine to get the Consumer Head from the supplied queue. + */ +static inline u64 +vmci_q_header_consumer_head(const struct vmci_queue_header *q_header) +{ + struct vmci_queue_header *qh = (struct vmci_queue_header *)q_header; + return atomic64_read(&qh->consumer_head); +} + +/* + * Helper routine to increment the Producer Tail. Fundamentally, + * vmci_qp_add_pointer() is used to manipulate the tail itself. + */ +static inline void +vmci_q_header_add_producer_tail(struct vmci_queue_header *q_header, + size_t add, + u64 queue_size) +{ + vmci_qp_add_pointer(&q_header->producer_tail, add, queue_size); +} + +/* + * Helper routine to increment the Consumer Head. Fundamentally, + * vmci_qp_add_pointer() is used to manipulate the head itself. + */ +static inline void +vmci_q_header_add_consumer_head(struct vmci_queue_header *q_header, + size_t add, + u64 queue_size) +{ + vmci_qp_add_pointer(&q_header->consumer_head, add, queue_size); +} + +/* + * Helper routine for getting the head and the tail pointer for a queue. + * Both the VMCIQueues are needed to get both the pointers for one queue. + */ +static inline void +vmci_q_header_get_pointers(const struct vmci_queue_header *produce_q_header, + const struct vmci_queue_header *consume_q_header, + u64 *producer_tail, + u64 *consumer_head) +{ + if (producer_tail) + *producer_tail = vmci_q_header_producer_tail(produce_q_header); + + if (consumer_head) + *consumer_head = vmci_q_header_consumer_head(consume_q_header); +} + +static inline void vmci_q_header_init(struct vmci_queue_header *q_header, + const struct vmci_handle handle) +{ + q_header->handle = handle; + atomic64_set(&q_header->producer_tail, 0); + atomic64_set(&q_header->consumer_head, 0); +} + +/* + * Finds available free space in a produce queue to enqueue more + * data or reports an error if queue pair corruption is detected. + */ +static s64 +vmci_q_header_free_space(const struct vmci_queue_header *produce_q_header, + const struct vmci_queue_header *consume_q_header, + const u64 produce_q_size) +{ + u64 tail; + u64 head; + u64 free_space; + + tail = vmci_q_header_producer_tail(produce_q_header); + head = vmci_q_header_consumer_head(consume_q_header); + + if (tail >= produce_q_size || head >= produce_q_size) + return VMCI_ERROR_INVALID_SIZE; + + /* + * Deduct 1 to avoid tail becoming equal to head which causes + * ambiguity. If head and tail are equal it means that the + * queue is empty. + */ + if (tail >= head) + free_space = produce_q_size - (tail - head) - 1; + else + free_space = head - tail - 1; + + return free_space; +} + +/* + * vmci_q_header_free_space() does all the heavy lifting of + * determing the number of free bytes in a Queue. This routine, + * then subtracts that size from the full size of the Queue so + * the caller knows how many bytes are ready to be dequeued. + * Results: + * On success, available data size in bytes (up to MAX_INT64). + * On failure, appropriate error code. + */ +static inline s64 +vmci_q_header_buf_ready(const struct vmci_queue_header *consume_q_header, + const struct vmci_queue_header *produce_q_header, + const u64 consume_q_size) +{ + s64 free_space; + + free_space = vmci_q_header_free_space(consume_q_header, + produce_q_header, consume_q_size); + if (free_space < VMCI_SUCCESS) + return free_space; + + return consume_q_size - free_space - 1; +} + + +#endif /* _VMW_VMCI_DEF_H_ */ -- cgit v1.2.3 From fda55eca5a33f33ffcd4192c6b2d75179714a52c Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 7 Jan 2013 09:28:21 +0000 Subject: net: introduce skb_transport_header_was_set() We have skb_mac_header_was_set() helper to tell if mac_header was set on a skb. We would like the same for transport_header. __netif_receive_skb() doesn't reset the transport header if already set by GRO layer. Note that network stacks usually reset the transport header anyway, after pulling the network header, so this change only allows a followup patch to have more precise qdisc pkt_len computation for GSO packets at ingress side. Signed-off-by: Eric Dumazet Cc: Jamal Hadi Salim Signed-off-by: David S. Miller --- include/linux/skbuff.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 320e976d5ab8..8b2256e880e0 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1492,6 +1492,11 @@ static inline void skb_set_inner_network_header(struct sk_buff *skb, skb->inner_network_header += offset; } +static inline bool skb_transport_header_was_set(const struct sk_buff *skb) +{ + return skb->transport_header != ~0U; +} + static inline unsigned char *skb_transport_header(const struct sk_buff *skb) { return skb->head + skb->transport_header; @@ -1580,6 +1585,11 @@ static inline void skb_set_inner_network_header(struct sk_buff *skb, skb->inner_network_header = skb->data + offset; } +static inline bool skb_transport_header_was_set(const struct sk_buff *skb) +{ + return skb->transport_header != NULL; +} + static inline unsigned char *skb_transport_header(const struct sk_buff *skb) { return skb->transport_header; -- cgit v1.2.3 From b7394d2429c198b1da3d46ac39192e891029ec0f Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Mon, 7 Jan 2013 20:52:39 +0000 Subject: netpoll: prepare for ipv6 This patch adjusts some struct and functions, to prepare for supporting IPv6. Cc: David S. Miller Signed-off-by: Cong Wang Signed-off-by: David S. Miller --- include/linux/netpoll.h | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netpoll.h b/include/linux/netpoll.h index 66d5379c305e..f54c3bb6a22b 100644 --- a/include/linux/netpoll.h +++ b/include/linux/netpoll.h @@ -12,13 +12,22 @@ #include #include +union inet_addr { + __u32 all[4]; + __be32 ip; + __be32 ip6[4]; + struct in_addr in; + struct in6_addr in6; +}; + struct netpoll { struct net_device *dev; char dev_name[IFNAMSIZ]; const char *name; void (*rx_hook)(struct netpoll *, int, char *, int); - __be32 local_ip, remote_ip; + union inet_addr local_ip, remote_ip; + bool ipv6; u16 local_port, remote_port; u8 remote_mac[ETH_ALEN]; @@ -33,7 +42,7 @@ struct netpoll_info { spinlock_t rx_lock; struct list_head rx_np; /* netpolls that registered an rx_hook */ - struct sk_buff_head arp_tx; /* list of arp requests to reply to */ + struct sk_buff_head neigh_tx; /* list of neigh requests to reply to */ struct sk_buff_head txq; struct delayed_work tx_work; -- cgit v1.2.3 From 8a168ca7074b463d0e19a9e9c15946db1afbddc4 Mon Sep 17 00:00:00 2001 From: Masanari Iida Date: Sat, 29 Dec 2012 02:00:09 +0900 Subject: treewide: Fix typo in various drivers Correct spelling typo in printk within various drivers. Signed-off-by: Masanari Iida Signed-off-by: Jiri Kosina --- include/linux/dma-buf.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h index eb48f3816df9..139e673a44f8 100644 --- a/include/linux/dma-buf.h +++ b/include/linux/dma-buf.h @@ -53,7 +53,7 @@ struct dma_buf_attachment; * @begin_cpu_access: [optional] called before cpu access to invalidate cpu * caches and allocate backing storage (if not yet done) * respectively pin the objet into memory. - * @end_cpu_access: [optional] called after cpu access to flush cashes. + * @end_cpu_access: [optional] called after cpu access to flush caches. * @kmap_atomic: maps a page from the buffer into kernel address * space, users may not block until the subsequent unmap call. * This callback must not sleep. -- cgit v1.2.3 From 548bc8e1b38e48653a90f48f636f8d253504f8a2 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 9 Jan 2013 08:05:13 -0800 Subject: block: RCU free request_queue RCU free request_queue so that blkcg_gq->q can be dereferenced under RCU lock. This will be used to implement hierarchical stats. Signed-off-by: Tejun Heo Acked-by: Vivek Goyal --- include/linux/blkdev.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index f94bc83011ed..406343c43cda 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -19,6 +19,7 @@ #include #include #include +#include #include @@ -437,6 +438,7 @@ struct request_queue { /* Throttle data */ struct throtl_data *td; #endif + struct rcu_head rcu_head; }; #define QUEUE_FLAG_QUEUED 1 /* uses generic tag queueing */ -- cgit v1.2.3 From 08c097fc3bb283299a6915a6a3795edab85979b1 Mon Sep 17 00:00:00 2001 From: Marc Dionne Date: Wed, 9 Jan 2013 14:16:30 +0000 Subject: cred: Remove tgcred pointer from struct cred Commit 3a50597de863 ("KEYS: Make the session and process keyrings per-thread") removed the definition of the thread_group_cred structure, but left a now unused pointer in struct cred. Signed-off-by: Marc Dionne Signed-off-by: David Howells Signed-off-by: Linus Torvalds --- include/linux/cred.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cred.h b/include/linux/cred.h index abb2cd50f6b2..04421e825365 100644 --- a/include/linux/cred.h +++ b/include/linux/cred.h @@ -128,7 +128,6 @@ struct cred { struct key *process_keyring; /* keyring private to this process */ struct key *thread_keyring; /* keyring private to this thread */ struct key *request_key_auth; /* assumed request_key authority */ - struct thread_group_cred *tgcred; /* thread-group shared credentials */ #endif #ifdef CONFIG_SECURITY void *security; /* subjective LSM security */ -- cgit v1.2.3 From dd4544f05469aaaeee891d7dc54d66430344321e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Tue, 8 Jan 2013 20:06:23 +0000 Subject: bgmac: driver for GBit MAC core on BCMA bus MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit BCMA is a Broadcom specific bus with devices AKA cores. All recent BCMA based SoCs have gigabit ethernet provided by the GBit MAC core. This patch adds driver for such a cores registering itself as a netdev. It has been tested on a BCM4706 and BCM4718 chipsets. In the kernel tree there is already b44 driver which has some common things with bgmac, however there are many differences that has led to the decision or writing a new driver: 1) GBit MAC cores appear on BCMA bus (not SSB as in case of b44) 2) There is 64bit DMA engine which differs from 32bit one 3) There is no CAM (Content Addressable Memory) in GBit MAC 4) We have 4 TX queues on GBit MAC devices (instead of 1) 5) Many registers have different addresses/values 6) RX header flags are also different The driver in it's state is functional how, however there is of course place for improvements: 1) Supporting more net_device_ops 2) SUpporting more ethtool_ops 3) Unaligned addressing in DMA 4) Writing separated PHY driver Signed-off-by: Rafał Miłecki Signed-off-by: David S. Miller --- include/linux/bcma/bcma_driver_chipcommon.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h index 9a0e3fa3ca95..ee332fab825b 100644 --- a/include/linux/bcma/bcma_driver_chipcommon.h +++ b/include/linux/bcma/bcma_driver_chipcommon.h @@ -634,4 +634,6 @@ extern void bcma_chipco_regctl_maskset(struct bcma_drv_cc *cc, u32 offset, u32 mask, u32 set); extern void bcma_pmu_spuravoid_pllupdate(struct bcma_drv_cc *cc, int spuravoid); +extern u32 bcma_pmu_get_bus_clock(struct bcma_drv_cc *cc); + #endif /* LINUX_BCMA_DRIVER_CC_H_ */ -- cgit v1.2.3 From 8f900a9a6e2691441ad763952d640ac44220e5dc Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Mon, 3 Dec 2012 20:07:05 +0100 Subject: usb: gadget: consider link speed for bMaxPower The USB 2.0 specification says that bMaxPower is the maximum power consumption expressed in 2 mA units and the USB 3.0 specification says that it is expressed in 8 mA units. This patch renames bMaxPower to MaxPower and the various /2 and *2 are removed. Before reporting the config descriptor, the proper value is computer based on the speed, all in-tree users are updated. MaxPower is also increased to u16 so we can store the nokia gadget value which is larger than the max value allowed for u8. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- include/linux/usb/composite.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index b09c37e04a91..dc512c9432d7 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -184,7 +184,8 @@ int config_ep_by_speed(struct usb_gadget *g, struct usb_function *f, * @bConfigurationValue: Copied into configuration descriptor. * @iConfiguration: Copied into configuration descriptor. * @bmAttributes: Copied into configuration descriptor. - * @bMaxPower: Copied into configuration descriptor. + * @MaxPower: Power consumtion in mA. Used to compute bMaxPower in the + * configuration descriptor after considering the bus speed. * @cdev: assigned by @usb_add_config() before calling @bind(); this is * the device associated with this configuration. * @@ -230,7 +231,7 @@ struct usb_configuration { u8 bConfigurationValue; u8 iConfiguration; u8 bmAttributes; - u8 bMaxPower; + u16 MaxPower; struct usb_composite_dev *cdev; -- cgit v1.2.3 From 1c810636556c8d53a37406b34a64d9b9b0161aa6 Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Fri, 4 Jan 2013 18:12:48 +0100 Subject: KVM: PPC: BookE: Implement EPR exit The External Proxy Facility in FSL BookE chips allows the interrupt controller to automatically acknowledge an interrupt as soon as a core gets its pending external interrupt delivered. Today, user space implements the interrupt controller, so we need to check on it during such a cycle. This patch implements logic for user space to enable EPR exiting, disable EPR exiting and EPR exiting itself, so that user space can acknowledge an interrupt when an external interrupt has successfully been delivered into the guest vcpu. Signed-off-by: Alexander Graf --- include/linux/kvm_host.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index cbe0d683e2e5..4dd7d7531e69 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -122,6 +122,7 @@ static inline bool is_error_page(struct page *page) #define KVM_REQ_WATCHDOG 18 #define KVM_REQ_MASTERCLOCK_UPDATE 19 #define KVM_REQ_MCLOCK_INPROGRESS 20 +#define KVM_REQ_EPR_EXIT 21 #define KVM_USERSPACE_IRQ_SOURCE_ID 0 #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 -- cgit v1.2.3 From f6e916b82022cba67bdd0ec7df84e2bce2ef3f73 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Tue, 20 Nov 2012 23:00:52 +0100 Subject: irqchip: add basic infrastructure With the recent creation of the drivers/irqchip/ directory, it is desirable to move irq controller drivers here. At the moment, the only driver here is irq-bcm2835, the driver for the irq controller found in the ARM BCM2835 SoC, present in Rasberry Pi systems. This irq controller driver was exporting its initialization function and its irq handling function through a header file in . When proposing to also move another irq controller driver in drivers/irqchip, Rob Herring raised the very valid point that moving things to drivers/irqchip was good in order to remove more stuff from arch/arm, but if it means adding gazillions of headers files in include/linux/irqchip/, it would not be very nice. So, upon the suggestion of Rob Herring and Arnd Bergmann, this commit introduces a small infrastructure that defines a central irqchip_init() function in drivers/irqchip/irqchip.c, which is meant to be called as the ->init_irq() callback of ARM platforms. This function calls of_irq_init() with an array of match strings and init functions generated from a special linker section. Note that the irq controller driver initialization function is responsible for setting the global handle_arch_irq() variable, so that ARM platforms no longer have to define the ->handle_irq field in their DT_MACHINE structure. A global header, is also added to expose the single irqchip_init() function to the reset of the kernel. A further commit moves the BCM2835 irq controller driver to this new small infrastructure, therefore removing the include/linux/irqchip/ directory. Signed-off-by: Thomas Petazzoni Reviewed-by: Stephen Warren Reviewed-by: Rob Herring Acked-by: Arnd Bergmann [rob.herring: reword commit message to reflect use of linker sections.] Signed-off-by: Rob Herring --- include/linux/irqchip.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 include/linux/irqchip.h (limited to 'include/linux') diff --git a/include/linux/irqchip.h b/include/linux/irqchip.h new file mode 100644 index 000000000000..e0006f1d35a0 --- /dev/null +++ b/include/linux/irqchip.h @@ -0,0 +1,16 @@ +/* + * Copyright (C) 2012 Thomas Petazzoni + * + * Thomas Petazzoni + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#ifndef _LINUX_IRQCHIP_H +#define _LINUX_IRQCHIP_H + +void irqchip_init(void); + +#endif -- cgit v1.2.3 From 54b956b903607f8f8878754dd4352da6a54a1da2 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 10 Jan 2013 10:57:01 -0800 Subject: Remove __dev* markings from init.h Now that all in-kernel users of __dev* are gone, let's remove them from init.h to keep them from popping up again and again. Thanks to Bill Pemberton for doing all of the hard work to make removal of this possible. Cc: Bill Pemberton Cc: Stephen Rothwell Signed-off-by: Greg Kroah-Hartman --- include/linux/init.h | 20 -------------------- 1 file changed, 20 deletions(-) (limited to 'include/linux') diff --git a/include/linux/init.h b/include/linux/init.h index a799273714ac..10ed4f436458 100644 --- a/include/linux/init.h +++ b/include/linux/init.h @@ -93,14 +93,6 @@ #define __exit __section(.exit.text) __exitused __cold notrace -/* Used for HOTPLUG, but that is always enabled now, so just make them noops */ -#define __devinit -#define __devinitdata -#define __devinitconst -#define __devexit -#define __devexitdata -#define __devexitconst - /* Used for HOTPLUG_CPU */ #define __cpuinit __section(.cpuinit.text) __cold notrace #define __cpuinitdata __section(.cpuinit.data) @@ -337,18 +329,6 @@ void __init parse_early_options(char *cmdline); #define __INITRODATA_OR_MODULE __INITRODATA #endif /*CONFIG_MODULES*/ -/* Functions marked as __devexit may be discarded at kernel link time, depending - on config options. Newer versions of binutils detect references from - retained sections to discarded sections and flag an error. Pointers to - __devexit functions must use __devexit_p(function_name), the wrapper will - insert either the function_name or NULL, depending on the config options. - */ -#if defined(MODULE) || defined(CONFIG_HOTPLUG) -#define __devexit_p(x) x -#else -#define __devexit_p(x) NULL -#endif - #ifdef MODULE #define __exit_p(x) x #else -- cgit v1.2.3 From 416186fbf8c5b4e4465a10c6ac7a45b6c47144b2 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Thu, 10 Jan 2013 08:56:51 +0000 Subject: net: Split core bits of netdev_pick_tx into __netdev_pick_tx This change splits the core bits of netdev_pick_tx into a separate function. The main idea behind this is to make this code accessible to select queue functions when they decide to process the standard path instead of their own custom path in their select queue routine. Signed-off-by: Alexander Duyck Signed-off-by: David S. Miller --- include/linux/netdevice.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 0209ac328e8a..608c3ac4d045 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1403,6 +1403,7 @@ static inline void netdev_for_each_tx_queue(struct net_device *dev, extern struct netdev_queue *netdev_pick_tx(struct net_device *dev, struct sk_buff *skb); +extern u16 __netdev_pick_tx(struct net_device *dev, struct sk_buff *skb); /* * Net namespace inlines -- cgit v1.2.3 From 537c00de1c9ba9876b91d869e84caceefe2b8bf9 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Thu, 10 Jan 2013 08:57:02 +0000 Subject: net: Add functions netif_reset_xps_queue and netif_set_xps_queue This patch adds two functions, netif_reset_xps_queue and netif_set_xps_queue. The main idea behind these two functions is to provide a mechanism through which drivers can update their defaults in regards to XPS. Currently no such mechanism exists and as a result we cannot use XPS for things such as ATR which would require a basic configuration to start in which the Tx queues are mapped to CPUs via a 1:1 mapping. With this change I am making it possible for drivers such as ixgbe to be able to use the XPS feature by controlling the default configuration. Signed-off-by: Alexander Duyck Signed-off-by: David S. Miller --- include/linux/netdevice.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 608c3ac4d045..59fe9da4e315 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2103,6 +2103,19 @@ static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) __netif_schedule(txq->qdisc); } +#ifdef CONFIG_XPS +extern void netif_reset_xps_queue(struct net_device *dev, u16 index); +extern int netif_set_xps_queue(struct net_device *dev, struct cpumask *mask, + u16 index); +#else +static inline int netif_set_xps_queue(struct net_device *dev, + struct cpumask *mask, + u16 index) +{ + return 0; +} +#endif + /* * Returns a Tx hash for the given packet when dev->real_num_tx_queues is used * as a distribution range limit for the returned value. -- cgit v1.2.3 From 024e9679a2daaa67642693366fb63a6b8c61b9f3 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Thu, 10 Jan 2013 08:57:46 +0000 Subject: net: Add support for XPS without sysfs being defined This patch makes it so that we can support transmit packet steering without sysfs needing to be enabled. The reason for making this change is to make it so that a driver can make use of the XPS even while the sysfs portion of the interface is not present. Signed-off-by: Alexander Duyck Signed-off-by: David S. Miller --- include/linux/netdevice.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 59fe9da4e315..aa7ad8a96e70 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2104,7 +2104,6 @@ static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index) } #ifdef CONFIG_XPS -extern void netif_reset_xps_queue(struct net_device *dev, u16 index); extern int netif_set_xps_queue(struct net_device *dev, struct cpumask *mask, u16 index); #else -- cgit v1.2.3 From b43e1065cab4b5be90c016b2f076086b70cd1556 Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Sat, 12 Jan 2013 15:29:38 +0000 Subject: ACPICA: Cleanup table handler naming conflicts. This is a cosmetic patch only. Comparison of the resulting binary showed only line number differences. This patch does not affect the generation of the Linux binary. This patch decreases 44 lines of 20121114 divergence.diff. There are naming conflicts between Linux and ACPICA on table handlers. This patch cleans up this conflicts to reduce the source code diff between Linux and ACPICA. Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki --- include/linux/acpi.h | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 3994d7790b23..6b795bd36383 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -74,9 +74,10 @@ enum acpi_address_range_id { /* Table Handlers */ -typedef int (*acpi_table_handler) (struct acpi_table_header *table); +typedef int (*acpi_tbl_table_handler)(struct acpi_table_header *table); -typedef int (*acpi_table_entry_handler) (struct acpi_subtable_header *header, const unsigned long end); +typedef int (*acpi_tbl_entry_handler)(struct acpi_subtable_header *header, + const unsigned long end); #ifdef CONFIG_ACPI_INITRD_TABLE_OVERRIDE void acpi_initrd_override(void *data, size_t size); @@ -95,10 +96,14 @@ int acpi_mps_check (void); int acpi_numa_init (void); int acpi_table_init (void); -int acpi_table_parse (char *id, acpi_table_handler handler); +int acpi_table_parse(char *id, acpi_tbl_table_handler handler); int __init acpi_table_parse_entries(char *id, unsigned long table_size, - int entry_id, acpi_table_entry_handler handler, unsigned int max_entries); -int acpi_table_parse_madt (enum acpi_madt_type id, acpi_table_entry_handler handler, unsigned int max_entries); + int entry_id, + acpi_tbl_entry_handler handler, + unsigned int max_entries); +int acpi_table_parse_madt(enum acpi_madt_type id, + acpi_tbl_entry_handler handler, + unsigned int max_entries); int acpi_parse_mcfg (struct acpi_table_header *header); void acpi_table_print_madt_entry (struct acpi_subtable_header *madt); -- cgit v1.2.3 From 242d98f077ac0ab80920219769eb095503b93f61 Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Mon, 17 Dec 2012 10:01:27 -0500 Subject: block,elevator: use new hashtable implementation Switch elevator to use the new hashtable implementation. This reduces the amount of generic unrelated code in the elevator. This also removes the dymanic allocation of the hash table. The size of the table is constant so there's no point in paying the price of an extra dereference when accessing it. This patch depends on d9b482c ("hashtable: introduce a small and naive hashtable") which was merged in v3.6. Signed-off-by: Sasha Levin Signed-off-by: Jens Axboe --- include/linux/elevator.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/elevator.h b/include/linux/elevator.h index c03af7687bb4..7c5a7c9789ee 100644 --- a/include/linux/elevator.h +++ b/include/linux/elevator.h @@ -2,6 +2,7 @@ #define _LINUX_ELEVATOR_H #include +#include #ifdef CONFIG_BLOCK @@ -96,6 +97,8 @@ struct elevator_type struct list_head list; }; +#define ELV_HASH_BITS 6 + /* * each queue has an elevator_queue associated with it */ @@ -105,8 +108,8 @@ struct elevator_queue void *elevator_data; struct kobject kobj; struct mutex sysfs_lock; - struct hlist_head *hash; unsigned int registered:1; + DECLARE_HASHTABLE(hash, ELV_HASH_BITS); }; /* -- cgit v1.2.3 From 422765c2638924da10ff363b5eed77924911bdc7 Mon Sep 17 00:00:00 2001 From: Jianpeng Ma Date: Fri, 11 Jan 2013 14:46:09 +0100 Subject: block: Remove should_sort judgement when flush blk_plug In commit 975927b942c932,it add blk_rq_pos to sort rq when flushing. Although this commit was used for the situation which blk_plug handled multi devices on the same time like md device. I think there must be some situations like this but only single device. So remove the should_sort judgement. Because the parameter should_sort is only for this purpose,it can delete should_sort from blk_plug. CC: Shaohua Li Signed-off-by: Jianpeng Ma Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index f94bc83011ed..dbe74279f3d6 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -974,7 +974,6 @@ struct blk_plug { unsigned long magic; /* detect uninitialized use-cases */ struct list_head list; /* requests */ struct list_head cb_list; /* md requires an unplug callback */ - unsigned int should_sort; /* list to be sorted before flushing? */ }; #define BLK_MAX_REQUEST_COUNT 16 -- cgit v1.2.3 From 9f244e9cfd70c7c0f82d3c92ce772ab2a92d9f64 Mon Sep 17 00:00:00 2001 From: Seiji Aguchi Date: Fri, 11 Jan 2013 18:09:41 +0000 Subject: pstore: Avoid deadlock in panic and emergency-restart path [Issue] When pstore is in panic and emergency-restart paths, it may be blocked in those paths because it simply takes spin_lock. This is an example scenario which pstore may hang up in a panic path: - cpuA grabs psinfo->buf_lock - cpuB panics and calls smp_send_stop - smp_send_stop sends IRQ to cpuA - after 1 second, cpuB gives up on cpuA and sends an NMI instead - cpuA is now in an NMI handler while still holding buf_lock - cpuB is deadlocked This case may happen if a firmware has a bug and cpuA is stuck talking with it more than one second. Also, this is a similar scenario in an emergency-restart path: - cpuA grabs psinfo->buf_lock and stucks in a firmware - cpuB kicks emergency-restart via either sysrq-b or hangcheck timer. And then, cpuB is deadlocked by taking psinfo->buf_lock again. [Solution] This patch avoids the deadlocking issues in both panic and emergency_restart paths by introducing a function, is_non_blocking_path(), to check if a cpu can be blocked in current path. With this patch, pstore is not blocked even if another cpu has taken a spin_lock, in those paths by changing from spin_lock_irqsave to spin_trylock_irqsave. In addition, according to a comment of emergency_restart() in kernel/sys.c, spin_lock shouldn't be taken in an emergency_restart path to avoid deadlock. This patch fits the comment below. /** * emergency_restart - reboot the system * * Without shutting down any hardware or taking any locks * reboot the system. This is called when we know we are in * trouble so this is our best effort to reboot. This is * safe to call in interrupt context. */ void emergency_restart(void) Signed-off-by: Seiji Aguchi Acked-by: Don Zickus Signed-off-by: Tony Luck --- include/linux/pstore.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pstore.h b/include/linux/pstore.h index 1788909d9a99..75d01760c911 100644 --- a/include/linux/pstore.h +++ b/include/linux/pstore.h @@ -68,12 +68,18 @@ struct pstore_info { #ifdef CONFIG_PSTORE extern int pstore_register(struct pstore_info *); +extern bool pstore_cannot_block_path(enum kmsg_dump_reason reason); #else static inline int pstore_register(struct pstore_info *psi) { return -ENODEV; } +static inline bool +pstore_cannot_block_path(enum kmsg_dump_reason reason) +{ + return false; +} #endif #endif /*_LINUX_PSTORE_H*/ -- cgit v1.2.3 From e2aa19fadd718d7dd920a3994118863861a4b61e Mon Sep 17 00:00:00 2001 From: Nathan Hintz Date: Thu, 10 Jan 2013 17:54:09 +0100 Subject: bcma: return the mips irq number in bcma_core_irq The irq signal numbers that are send by the cpu are increased by 2 from the number programmed into the mips core by bcma. Return the irq number on which the irqs are send in bcma_core_irq() now. Signed-off-by: Nathan Hintz Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/bcma/bcma_driver_mips.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_mips.h b/include/linux/bcma/bcma_driver_mips.h index 6495579e3f35..73c7f4b882cc 100644 --- a/include/linux/bcma/bcma_driver_mips.h +++ b/include/linux/bcma/bcma_driver_mips.h @@ -48,6 +48,6 @@ static inline void bcma_core_mips_early_init(struct bcma_drv_mips *mcore) { } extern u32 bcma_cpu_clock(struct bcma_drv_mips *mcore); -extern unsigned int bcma_core_mips_irq(struct bcma_device *dev); +extern unsigned int bcma_core_irq(struct bcma_device *core); #endif /* LINUX_BCMA_DRIVER_MIPS_H_ */ -- cgit v1.2.3 From 990debe2ca8379863709721926550a55f47f3880 Mon Sep 17 00:00:00 2001 From: Nathan Hintz Date: Thu, 10 Jan 2013 22:24:03 -0800 Subject: bcma: update pci configuration for bcm4706/bcm4716 Update the PCI configuration for BCM4706 and BCM4716 per the 2011 Broadcom SDK. Signed-off-by: Nathan Hintz Signed-off-by: John W. Linville --- include/linux/bcma/bcma_driver_pci.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_pci.h b/include/linux/bcma/bcma_driver_pci.h index 41da581e1612..31232247a1ee 100644 --- a/include/linux/bcma/bcma_driver_pci.h +++ b/include/linux/bcma/bcma_driver_pci.h @@ -179,6 +179,8 @@ struct pci_dev; #define BCMA_CORE_PCI_CFG_FUN_MASK 7 /* Function mask */ #define BCMA_CORE_PCI_CFG_OFF_MASK 0xfff /* Register mask */ +#define BCMA_CORE_PCI_CFG_DEVCTRL 0xd8 + /* PCIE Root Capability Register bits (Host mode only) */ #define BCMA_CORE_PCI_RC_CRS_VISIBILITY 0x0001 -- cgit v1.2.3 From 6a099c63650e50ebf7d1259b859a3d230aec4207 Mon Sep 17 00:00:00 2001 From: Dongjin Kim Date: Sat, 8 Dec 2012 05:18:44 +0900 Subject: USB: misc: Add USB3503 High-Speed Hub Controller This patch adds new driver of SMSC USB3503 USB 2.0 hub controller with HSIC upstream connectivity and three USB 2.0 downstream ports. The specification can be found from 'http://www.smsc.com/index.php?tid=295&pid=325'. The current version have been tested very basic features switching the modes, HUB-MODE and STANDBY-MODE. Signed-off-by: Dongjin Kim Signed-off-by: Greg Kroah-Hartman --- include/linux/platform_data/usb3503.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 include/linux/platform_data/usb3503.h (limited to 'include/linux') diff --git a/include/linux/platform_data/usb3503.h b/include/linux/platform_data/usb3503.h new file mode 100644 index 000000000000..85dcc709f7e9 --- /dev/null +++ b/include/linux/platform_data/usb3503.h @@ -0,0 +1,19 @@ +#ifndef __USB3503_H__ +#define __USB3503_H__ + +#define USB3503_I2C_NAME "usb3503" + +enum usb3503_mode { + USB3503_MODE_UNKNOWN, + USB3503_MODE_HUB, + USB3503_MODE_STANDBY, +}; + +struct usb3503_platform_data { + enum usb3503_mode initial_mode; + int gpio_intn; + int gpio_connect; + int gpio_reset; +}; + +#endif -- cgit v1.2.3 From 483f33f63c1cb3c6becb465bac7b75d7ff5e3b8f Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 4 Jan 2013 17:57:40 +0100 Subject: pinctrl: add pinconf-generic defines for output This adds a definition of a generic output configuration for a certain pin when using the generic pin configuration library. Whereas driving pins low/high is usually a GPIO business, you may want to set up pins into a default state using hogs, and never touch them again. This helps out with that scenario. Based on a patch from Patrice Chotard. Signed-off-by: Patrice Chotard Reviewed-by: Stephen Warren Signed-off-by: Linus Walleij --- include/linux/pinctrl/pinconf-generic.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h index 47a1bdd88878..b23d99da3b4b 100644 --- a/include/linux/pinctrl/pinconf-generic.h +++ b/include/linux/pinctrl/pinconf-generic.h @@ -62,6 +62,8 @@ * operation, if several modes of operation are supported these can be * passed in the argument on a custom form, else just use argument 1 * to indicate low power mode, argument 0 turns low power mode off. + * @PIN_CONFIG_OUTPUT: this will configure the pin in output, use argument + * 1 to indicate high level, argument 0 to indicate low level. * @PIN_CONFIG_END: this is the last enumerator for pin configurations, if * you need to pass in custom configurations to the pin controller, use * PIN_CONFIG_END+1 as the base offset. @@ -79,6 +81,7 @@ enum pin_config_param { PIN_CONFIG_INPUT_DEBOUNCE, PIN_CONFIG_POWER_SOURCE, PIN_CONFIG_LOW_POWER_MODE, + PIN_CONFIG_OUTPUT, PIN_CONFIG_END = 0x7FFF, }; -- cgit v1.2.3 From 896f97ea95c1d29c0520ee0766b66b7f64cb967c Mon Sep 17 00:00:00 2001 From: David Decotigny Date: Fri, 11 Jan 2013 14:31:36 -0800 Subject: lib: cpu_rmap: avoid flushing all workqueues In some cases, free_irq_cpu_rmap() is called while holding a lock (eg rtnl). This can lead to deadlocks, because it invokes flush_scheduled_work() which ends up waiting for whole system workqueue to flush, but some pending works might try to acquire the lock we are already holding. This commit uses reference-counting to replace irq_run_affinity_notifiers(). It also removes irq_run_affinity_notifiers() altogether. [akpm@linux-foundation.org: eliminate free_cpu_rmap, rename cpu_rmap_reclaim() to cpu_rmap_release(), propagate kref_put() retval from cpu_rmap_put()] Signed-off-by: David Decotigny Reviewed-by: Ben Hutchings Acked-by: Eric Dumazet Reviewed-by: Josh Triplett Cc: "David S. Miller" Cc: Or Gerlitz Acked-by: Amir Vadai Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/cpu_rmap.h | 13 ++++--------- include/linux/interrupt.h | 5 ----- 2 files changed, 4 insertions(+), 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cpu_rmap.h b/include/linux/cpu_rmap.h index ac3bbb5b9502..1739510d8994 100644 --- a/include/linux/cpu_rmap.h +++ b/include/linux/cpu_rmap.h @@ -13,9 +13,11 @@ #include #include #include +#include /** * struct cpu_rmap - CPU affinity reverse-map + * @refcount: kref for object * @size: Number of objects to be reverse-mapped * @used: Number of objects added * @obj: Pointer to array of object pointers @@ -23,6 +25,7 @@ * based on affinity masks */ struct cpu_rmap { + struct kref refcount; u16 size, used; void **obj; struct { @@ -33,15 +36,7 @@ struct cpu_rmap { #define CPU_RMAP_DIST_INF 0xffff extern struct cpu_rmap *alloc_cpu_rmap(unsigned int size, gfp_t flags); - -/** - * free_cpu_rmap - free CPU affinity reverse-map - * @rmap: Reverse-map allocated with alloc_cpu_rmap(), or %NULL - */ -static inline void free_cpu_rmap(struct cpu_rmap *rmap) -{ - kfree(rmap); -} +extern int cpu_rmap_put(struct cpu_rmap *rmap); extern int cpu_rmap_add(struct cpu_rmap *rmap, void *obj); extern int cpu_rmap_update(struct cpu_rmap *rmap, u16 index, diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 5e4e6170f43a..5fa5afeeb759 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -268,11 +268,6 @@ struct irq_affinity_notify { extern int irq_set_affinity_notifier(unsigned int irq, struct irq_affinity_notify *notify); -static inline void irq_run_affinity_notifiers(void) -{ - flush_scheduled_work(); -} - #else /* CONFIG_SMP */ static inline int irq_set_affinity(unsigned int irq, const struct cpumask *m) -- cgit v1.2.3 From 1b963c81b14509e330e0fe3218b645ece2738dc5 Mon Sep 17 00:00:00 2001 From: Jiri Kosina Date: Fri, 11 Jan 2013 14:31:56 -0800 Subject: lockdep, rwsem: provide down_write_nest_lock() down_write_nest_lock() provides a means to annotate locking scenario where an outer lock is guaranteed to serialize the order nested locks are being acquired. This is analogoue to already existing mutex_lock_nest_lock() and spin_lock_nest_lock(). Signed-off-by: Jiri Kosina Cc: Rik van Riel Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Mel Gorman Tested-by: Sedat Dilek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/lockdep.h | 3 +++ include/linux/rwsem.h | 9 +++++++++ 2 files changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 00e46376e28f..2bca44b0893c 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -524,14 +524,17 @@ static inline void print_irqtrace_events(struct task_struct *curr) #ifdef CONFIG_DEBUG_LOCK_ALLOC # ifdef CONFIG_PROVE_LOCKING # define rwsem_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 2, NULL, i) +# define rwsem_acquire_nest(l, s, t, n, i) lock_acquire(l, s, t, 0, 2, n, i) # define rwsem_acquire_read(l, s, t, i) lock_acquire(l, s, t, 1, 2, NULL, i) # else # define rwsem_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 1, NULL, i) +# define rwsem_acquire_nest(l, s, t, n, i) lock_acquire(l, s, t, 0, 1, n, i) # define rwsem_acquire_read(l, s, t, i) lock_acquire(l, s, t, 1, 1, NULL, i) # endif # define rwsem_release(l, n, i) lock_release(l, n, i) #else # define rwsem_acquire(l, s, t, i) do { } while (0) +# define rwsem_acquire_nest(l, s, t, n, i) do { } while (0) # define rwsem_acquire_read(l, s, t, i) do { } while (0) # define rwsem_release(l, n, i) do { } while (0) #endif diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h index 54bd7cd7ecbd..413cc11e414a 100644 --- a/include/linux/rwsem.h +++ b/include/linux/rwsem.h @@ -125,8 +125,17 @@ extern void downgrade_write(struct rw_semaphore *sem); */ extern void down_read_nested(struct rw_semaphore *sem, int subclass); extern void down_write_nested(struct rw_semaphore *sem, int subclass); +extern void _down_write_nest_lock(struct rw_semaphore *sem, struct lockdep_map *nest_lock); + +# define down_write_nest_lock(sem, nest_lock) \ +do { \ + typecheck(struct lockdep_map *, &(nest_lock)->dep_map); \ + _down_write_nest_lock(sem, &(nest_lock)->dep_map); \ +} while (0); + #else # define down_read_nested(sem, subclass) down_read(sem) +# define down_write_nest_lock(sem, nest_lock) down_read(sem) # define down_write_nested(sem, subclass) down_write(sem) #endif -- cgit v1.2.3 From 7b9205bd775afc4439ed86d617f9042ee9e76a71 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 11 Jan 2013 14:32:05 -0800 Subject: audit: create explicit AUDIT_SECCOMP event type The seccomp path was using AUDIT_ANOM_ABEND from when seccomp mode 1 could only kill a process. While we still want to make sure an audit record is forced on a kill, this should use a separate record type since seccomp mode 2 introduces other behaviors. In the case of "handled" behaviors (process wasn't killed), only emit a record if the process is under inspection. This change also fixes userspace examination of seccomp audit events, since it was considered malformed due to missing fields of the AUDIT_ANOM_ABEND event type. Signed-off-by: Kees Cook Cc: Al Viro Cc: Eric Paris Cc: Jeff Layton Cc: "Eric W. Biederman" Cc: Julien Tinnes Acked-by: Will Drewry Acked-by: Steve Grubb Cc: Andrea Arcangeli Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/audit.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/audit.h b/include/linux/audit.h index bce729afbcf9..9d5104d7aba9 100644 --- a/include/linux/audit.h +++ b/include/linux/audit.h @@ -157,7 +157,8 @@ void audit_core_dumps(long signr); static inline void audit_seccomp(unsigned long syscall, long signr, int code) { - if (unlikely(!audit_dummy_context())) + /* Force a record to be reported if a signal was delivered. */ + if (signr || unlikely(!audit_dummy_context())) __audit_seccomp(syscall, signr, code); } -- cgit v1.2.3 From c0a3a20b6c4b5229ef5d26fd9b1c4b1957632aa7 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Fri, 11 Jan 2013 14:32:13 -0800 Subject: linux/audit.h: move ptrace.h include to kernel header While the kernel internals want pt_regs (and so it includes linux/ptrace.h), the user version of audit.h does not need it. So move the include out of the uapi version. This avoids issues where people want the audit defines and userland ptrace api. Including both the kernel ptrace and the userland ptrace headers can easily lead to failure. Signed-off-by: Mike Frysinger Cc: Eric Paris Cc: Al Viro Reviewed-by: Kees Cook Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/audit.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/audit.h b/include/linux/audit.h index 9d5104d7aba9..5a6d718adf34 100644 --- a/include/linux/audit.h +++ b/include/linux/audit.h @@ -24,6 +24,7 @@ #define _LINUX_AUDIT_H_ #include +#include #include struct audit_sig_info { -- cgit v1.2.3 From 8fb74b9fb2b182d54beee592350d9ea1f325917a Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Fri, 11 Jan 2013 14:32:16 -0800 Subject: mm: compaction: partially revert capture of suitable high-order page Eric Wong reported on 3.7 and 3.8-rc2 that ppoll() got stuck when waiting for POLLIN on a local TCP socket. It was easier to trigger if there was disk IO and dirty pages at the same time and he bisected it to commit 1fb3f8ca0e92 ("mm: compaction: capture a suitable high-order page immediately when it is made available"). The intention of that patch was to improve high-order allocations under memory pressure after changes made to reclaim in 3.6 drastically hurt THP allocations but the approach was flawed. For Eric, the problem was that page->pfmemalloc was not being cleared for captured pages leading to a poor interaction with swap-over-NFS support causing the packets to be dropped. However, I identified a few more problems with the patch including the fact that it can increase contention on zone->lock in some cases which could result in async direct compaction being aborted early. In retrospect the capture patch took the wrong approach. What it should have done is mark the pageblock being migrated as MIGRATE_ISOLATE if it was allocating for THP and avoided races that way. While the patch was showing to improve allocation success rates at the time, the benefit is marginal given the relative complexity and it should be revisited from scratch in the context of the other reclaim-related changes that have taken place since the patch was first written and tested. This patch partially reverts commit 1fb3f8ca0e92 ("mm: compaction: capture a suitable high-order page immediately when it is made available"). Reported-and-tested-by: Eric Wong Tested-by: Eric Dumazet Cc: Signed-off-by: Mel Gorman Cc: David Miller Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/compaction.h | 4 ++-- include/linux/mm.h | 1 - 2 files changed, 2 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/compaction.h b/include/linux/compaction.h index 6ecb6dc2f303..cc7bddeaf553 100644 --- a/include/linux/compaction.h +++ b/include/linux/compaction.h @@ -22,7 +22,7 @@ extern int sysctl_extfrag_handler(struct ctl_table *table, int write, extern int fragmentation_index(struct zone *zone, unsigned int order); extern unsigned long try_to_compact_pages(struct zonelist *zonelist, int order, gfp_t gfp_mask, nodemask_t *mask, - bool sync, bool *contended, struct page **page); + bool sync, bool *contended); extern int compact_pgdat(pg_data_t *pgdat, int order); extern void reset_isolation_suitable(pg_data_t *pgdat); extern unsigned long compaction_suitable(struct zone *zone, int order); @@ -75,7 +75,7 @@ static inline bool compaction_restarting(struct zone *zone, int order) #else static inline unsigned long try_to_compact_pages(struct zonelist *zonelist, int order, gfp_t gfp_mask, nodemask_t *nodemask, - bool sync, bool *contended, struct page **page) + bool sync, bool *contended) { return COMPACT_CONTINUE; } diff --git a/include/linux/mm.h b/include/linux/mm.h index 63204078f72b..66e2f7c61e5c 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -455,7 +455,6 @@ void put_pages_list(struct list_head *pages); void split_page(struct page *page, unsigned int order); int split_free_page(struct page *page); -int capture_free_page(struct page *page, int alloc_order, int migratetype); /* * Compound pages have a destructor function. Provide a -- cgit v1.2.3 From 3cb7a56344ca45ee56d71c5f8fe9f922306bff1f Mon Sep 17 00:00:00 2001 From: Michel Lespinasse Date: Fri, 11 Jan 2013 14:32:20 -0800 Subject: lib/rbtree.c: avoid the use of non-static __always_inline lib/rbtree.c declared __rb_erase_color() as __always_inline void, and then exported it with EXPORT_SYMBOL. This was because __rb_erase_color() must be exported for augmented rbtree users, but it must also be inlined into rb_erase() so that the dummy callback can get optimized out of that call site. (Actually with a modern compiler, none of the dummy callback functions should even be generated as separate text functions). The above usage is legal C, but it was unusual enough for some compilers to warn about it. This change makes things more explicit, with a static __always_inline ____rb_erase_color function for use in rb_erase(), and a separate non-inline __rb_erase_color function for use in rb_erase_augmented call sites. Signed-off-by: Michel Lespinasse Reported-by: Wu Fengguang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rbtree_augmented.h | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/rbtree_augmented.h b/include/linux/rbtree_augmented.h index 2ac60c9cf644..fea49b5da12a 100644 --- a/include/linux/rbtree_augmented.h +++ b/include/linux/rbtree_augmented.h @@ -123,9 +123,9 @@ __rb_change_child(struct rb_node *old, struct rb_node *new, extern void __rb_erase_color(struct rb_node *parent, struct rb_root *root, void (*augment_rotate)(struct rb_node *old, struct rb_node *new)); -static __always_inline void -rb_erase_augmented(struct rb_node *node, struct rb_root *root, - const struct rb_augment_callbacks *augment) +static __always_inline struct rb_node * +__rb_erase_augmented(struct rb_node *node, struct rb_root *root, + const struct rb_augment_callbacks *augment) { struct rb_node *child = node->rb_right, *tmp = node->rb_left; struct rb_node *parent, *rebalance; @@ -217,6 +217,14 @@ rb_erase_augmented(struct rb_node *node, struct rb_root *root, } augment->propagate(tmp, NULL); + return rebalance; +} + +static __always_inline void +rb_erase_augmented(struct rb_node *node, struct rb_root *root, + const struct rb_augment_callbacks *augment) +{ + struct rb_node *rebalance = __rb_erase_augmented(node, root, augment); if (rebalance) __rb_erase_color(rebalance, root, augment->rotate); } -- cgit v1.2.3 From d07d7507bfb4e23735c9b83e397c43e1e8a173e8 Mon Sep 17 00:00:00 2001 From: Stanislaw Gruszka Date: Thu, 10 Jan 2013 23:19:10 +0000 Subject: net, wireless: overwrite default_ethtool_ops Since: commit 2c60db037034d27f8c636403355d52872da92f81 Author: Eric Dumazet Date: Sun Sep 16 09:17:26 2012 +0000 net: provide a default dev->ethtool_ops wireless core does not correctly assign ethtool_ops. After alloc_netdev*() call, some cfg80211 drivers provide they own ethtool_ops, but some do not. For them, wireless core provide generic cfg80211_ethtool_ops, which is assigned in NETDEV_REGISTER notify call: if (!dev->ethtool_ops) dev->ethtool_ops = &cfg80211_ethtool_ops; But after Eric's commit, dev->ethtool_ops is no longer NULL (on cfg80211 drivers without custom ethtool_ops), but points to &default_ethtool_ops. In order to fix the problem, provide function which will overwrite default_ethtool_ops and use it by wireless core. Signed-off-by: Stanislaw Gruszka Acked-by: Johannes Berg Acked-by: Ben Hutchings Signed-off-by: David S. Miller --- include/linux/netdevice.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index c599e4782d45..9ef07d0868b6 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -60,6 +60,9 @@ struct wireless_dev; #define SET_ETHTOOL_OPS(netdev,ops) \ ( (netdev)->ethtool_ops = (ops) ) +extern void netdev_set_default_ethtool_ops(struct net_device *dev, + const struct ethtool_ops *ops); + /* hardware address assignment types */ #define NET_ADDR_PERM 0 /* address is permanent (default) */ #define NET_ADDR_RANDOM 1 /* address is generated randomly */ -- cgit v1.2.3 From 10ee27a06cc8eb57f83342a8eabcb75deb872d52 Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Thu, 10 Jan 2013 13:47:57 +0800 Subject: vfs: re-implement writeback_inodes_sb(_nr)_if_idle() and rename them writeback_inodes_sb(_nr)_if_idle() is re-implemented by replacing down_read() with down_read_trylock() because - If ->s_umount is write locked, then the sb is not idle. That is writeback_inodes_sb(_nr)_if_idle() needn't wait for the lock. - writeback_inodes_sb(_nr)_if_idle() grabs s_umount lock when it want to start writeback, it may bring us deadlock problem when doing umount. In order to fix the problem, ext4 and btrfs implemented their own writeback functions instead of writeback_inodes_sb(_nr)_if_idle(), but it introduced the redundant code, it is better to implement a new writeback_inodes_sb(_nr)_if_idle(). The name of these two functions is cumbersome, so rename them to try_to_writeback_inodes_sb(_nr). This idea came from Christoph Hellwig. Some code is from the patch of Kamal Mostafa. Reviewed-by: Jan Kara Signed-off-by: Miao Xie Signed-off-by: Fengguang Wu --- include/linux/writeback.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/writeback.h b/include/linux/writeback.h index b82a83aba311..9a9367c0c076 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -87,9 +87,9 @@ int inode_wait(void *); void writeback_inodes_sb(struct super_block *, enum wb_reason reason); void writeback_inodes_sb_nr(struct super_block *, unsigned long nr, enum wb_reason reason); -int writeback_inodes_sb_if_idle(struct super_block *, enum wb_reason reason); -int writeback_inodes_sb_nr_if_idle(struct super_block *, unsigned long nr, - enum wb_reason reason); +int try_to_writeback_inodes_sb(struct super_block *, enum wb_reason reason); +int try_to_writeback_inodes_sb_nr(struct super_block *, unsigned long nr, + enum wb_reason reason); void sync_inodes_sb(struct super_block *); long writeback_inodes_wb(struct bdi_writeback *wb, long nr_pages, enum wb_reason reason); -- cgit v1.2.3 From 0d21b0e3477395e7ff2acc269f15df6e6a8d356d Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Sat, 12 Jan 2013 11:38:44 +1030 Subject: module: add new state MODULE_STATE_UNFORMED. You should never look at such a module, so it's excised from all paths which traverse the modules list. We add the state at the end, to avoid gratuitous ABI break (ksplice). Signed-off-by: Rusty Russell --- include/linux/module.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/module.h b/include/linux/module.h index 7760c6d344a3..1375ee3f03aa 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -199,11 +199,11 @@ struct module_use { struct module *source, *target; }; -enum module_state -{ - MODULE_STATE_LIVE, - MODULE_STATE_COMING, - MODULE_STATE_GOING, +enum module_state { + MODULE_STATE_LIVE, /* Normal state. */ + MODULE_STATE_COMING, /* Full formed, running module_init. */ + MODULE_STATE_GOING, /* Going away. */ + MODULE_STATE_UNFORMED, /* Still setting it up. */ }; /** -- cgit v1.2.3 From 61cc13a51bcff737ce02d2047834171c0365b00d Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Thu, 10 Jan 2013 10:52:56 +0200 Subject: dmaengine: introduce is_slave_direction function This function helps to distinguish the slave type of transfer by checking the direction parameter. Signed-off-by: Andy Shevchenko Reviewed-by: Viresh Kumar Reviewed-by: Mika Westerberg Reviewed-by: Linus Walleij Cc: Nicolas Ferre Cc: Guennadi Liakhovetski Signed-off-by: Vinod Koul --- include/linux/dmaengine.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 4ca9cf73ad3f..bfcdecb5d87a 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -621,6 +621,11 @@ static inline int dmaengine_slave_config(struct dma_chan *chan, (unsigned long)config); } +static inline bool is_slave_direction(enum dma_transfer_direction direction) +{ + return (direction == DMA_MEM_TO_DEV) || (direction == DMA_DEV_TO_MEM); +} + static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single( struct dma_chan *chan, dma_addr_t buf, size_t len, enum dma_transfer_direction dir, unsigned long flags) -- cgit v1.2.3 From 520f7bd73354f003a9a59937b28e4903d985c420 Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Thu, 27 Dec 2012 13:10:24 -0600 Subject: irqchip: Move ARM gic.h to include/linux/irqchip/arm-gic.h Now that we have GIC moved to drivers/irqchip and all GIC DT init for platforms using irqchip_init, move gic.h and update the remaining includes. Signed-off-by: Rob Herring Cc: Thomas Gleixner Cc: Russell King Cc: Anton Vorontsov Cc: Kukjin Kim Cc: Sascha Hauer Cc: David Brown Cc: Daniel Walker Cc: Bryan Huntsman Cc: Tony Lindgren Cc: Paul Mundt Cc: Magnus Damm Cc: Viresh Kumar Cc: Shiraz Hashim Cc: Stephen Warren Cc: Srinidhi Kasagar Cc: Linus Walleij Cc: Samuel Ortiz --- include/linux/irqchip/arm-gic.h | 48 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 include/linux/irqchip/arm-gic.h (limited to 'include/linux') diff --git a/include/linux/irqchip/arm-gic.h b/include/linux/irqchip/arm-gic.h new file mode 100644 index 000000000000..a67ca55e6f4e --- /dev/null +++ b/include/linux/irqchip/arm-gic.h @@ -0,0 +1,48 @@ +/* + * include/linux/irqchip/arm-gic.h + * + * Copyright (C) 2002 ARM Limited, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __LINUX_IRQCHIP_ARM_GIC_H +#define __LINUX_IRQCHIP_ARM_GIC_H + +#define GIC_CPU_CTRL 0x00 +#define GIC_CPU_PRIMASK 0x04 +#define GIC_CPU_BINPOINT 0x08 +#define GIC_CPU_INTACK 0x0c +#define GIC_CPU_EOI 0x10 +#define GIC_CPU_RUNNINGPRI 0x14 +#define GIC_CPU_HIGHPRI 0x18 + +#define GIC_DIST_CTRL 0x000 +#define GIC_DIST_CTR 0x004 +#define GIC_DIST_ENABLE_SET 0x100 +#define GIC_DIST_ENABLE_CLEAR 0x180 +#define GIC_DIST_PENDING_SET 0x200 +#define GIC_DIST_PENDING_CLEAR 0x280 +#define GIC_DIST_ACTIVE_BIT 0x300 +#define GIC_DIST_PRI 0x400 +#define GIC_DIST_TARGET 0x800 +#define GIC_DIST_CONFIG 0xc00 +#define GIC_DIST_SOFTINT 0xf00 + +struct device_node; + +extern struct irq_chip gic_arch_extn; + +void gic_init_bases(unsigned int, int, void __iomem *, void __iomem *, + u32 offset, struct device_node *); +void gic_secondary_init(unsigned int); +void gic_cascade_irq(unsigned int gic_nr, unsigned int irq); + +static inline void gic_init(unsigned int nr, int start, + void __iomem *dist , void __iomem *cpu) +{ + gic_init_bases(nr, start, dist, cpu, 0, NULL); +} + +#endif -- cgit v1.2.3 From 9e47b8bf9815523a5816f2f83e73b13812d74014 Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Mon, 7 Jan 2013 09:45:59 -0600 Subject: irqchip: Move ARM vic.h to include/linux/irqchip/arm-vic.h Now that we have VIC moved to drivers/irqchip and all VIC DT init for platforms using irqchip_init, move gic.h and update the remaining includes. Signed-off-by: Rob Herring Cc: Thomas Gleixner Cc: Hartley Sweeten Cc: Ryan Mallon Cc: Russell King Cc: Alessandro Rubini Acked-by: Linus Walleij Cc: STEricsson Cc: Ben Dooks Cc: Kukjin Kim Cc: linux-samsung-soc@vger.kernel.org --- include/linux/irqchip/arm-vic.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 include/linux/irqchip/arm-vic.h (limited to 'include/linux') diff --git a/include/linux/irqchip/arm-vic.h b/include/linux/irqchip/arm-vic.h new file mode 100644 index 000000000000..e3c82dc95756 --- /dev/null +++ b/include/linux/irqchip/arm-vic.h @@ -0,0 +1,36 @@ +/* + * arch/arm/include/asm/hardware/vic.h + * + * Copyright (c) ARM Limited 2003. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#ifndef __ASM_ARM_HARDWARE_VIC_H +#define __ASM_ARM_HARDWARE_VIC_H + +#include + +#define VIC_RAW_STATUS 0x08 +#define VIC_INT_ENABLE 0x10 /* 1 = enable, 0 = disable */ +#define VIC_INT_ENABLE_CLEAR 0x14 + +struct device_node; +struct pt_regs; + +void __vic_init(void __iomem *base, int irq_start, u32 vic_sources, + u32 resume_sources, struct device_node *node); +void vic_init(void __iomem *base, unsigned int irq_start, u32 vic_sources, u32 resume_sources); + +#endif -- cgit v1.2.3 From 3a95b9fbba893ebfa9b83de105707539e0228e0c Mon Sep 17 00:00:00 2001 From: Alessandro Rubini Date: Sat, 24 Nov 2012 00:22:56 +0000 Subject: pl080.h: moved from arm/include/asm/hardware to include/linux/amba/ The header is used by drivers/dma/amba-pl08x.c, which can be compiled under x86, where PL080 exists under a PCI-to-AMBA bridge. This patche moves it where it can be accessed by other architectures, and fixes all users. Signed-off-by: Alessandro Rubini Acked-by: Giancarlo Asnaghi Acked-by: Linus Walleij Signed-off-by: Vinod Koul --- include/linux/amba/pl080.h | 146 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 146 insertions(+) create mode 100644 include/linux/amba/pl080.h (limited to 'include/linux') diff --git a/include/linux/amba/pl080.h b/include/linux/amba/pl080.h new file mode 100644 index 000000000000..3e7b62fbefbd --- /dev/null +++ b/include/linux/amba/pl080.h @@ -0,0 +1,146 @@ +/* include/linux/amba/pl080.h + * + * Copyright 2008 Openmoko, Inc. + * Copyright 2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks + * + * ARM PrimeCell PL080 DMA controller + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +/* Note, there are some Samsung updates to this controller block which + * make it not entierly compatible with the PL080 specification from + * ARM. When in doubt, check the Samsung documentation first. + * + * The Samsung defines are PL080S, and add an extra control register, + * the ability to move more than 2^11 counts of data and some extra + * OneNAND features. +*/ + +#ifndef ASM_PL080_H +#define ASM_PL080_H + +#define PL080_INT_STATUS (0x00) +#define PL080_TC_STATUS (0x04) +#define PL080_TC_CLEAR (0x08) +#define PL080_ERR_STATUS (0x0C) +#define PL080_ERR_CLEAR (0x10) +#define PL080_RAW_TC_STATUS (0x14) +#define PL080_RAW_ERR_STATUS (0x18) +#define PL080_EN_CHAN (0x1c) +#define PL080_SOFT_BREQ (0x20) +#define PL080_SOFT_SREQ (0x24) +#define PL080_SOFT_LBREQ (0x28) +#define PL080_SOFT_LSREQ (0x2C) + +#define PL080_CONFIG (0x30) +#define PL080_CONFIG_M2_BE (1 << 2) +#define PL080_CONFIG_M1_BE (1 << 1) +#define PL080_CONFIG_ENABLE (1 << 0) + +#define PL080_SYNC (0x34) + +/* Per channel configuration registers */ + +#define PL080_Cx_STRIDE (0x20) +#define PL080_Cx_BASE(x) ((0x100 + (x * 0x20))) +#define PL080_Cx_SRC_ADDR(x) ((0x100 + (x * 0x20))) +#define PL080_Cx_DST_ADDR(x) ((0x104 + (x * 0x20))) +#define PL080_Cx_LLI(x) ((0x108 + (x * 0x20))) +#define PL080_Cx_CONTROL(x) ((0x10C + (x * 0x20))) +#define PL080_Cx_CONFIG(x) ((0x110 + (x * 0x20))) +#define PL080S_Cx_CONTROL2(x) ((0x110 + (x * 0x20))) +#define PL080S_Cx_CONFIG(x) ((0x114 + (x * 0x20))) + +#define PL080_CH_SRC_ADDR (0x00) +#define PL080_CH_DST_ADDR (0x04) +#define PL080_CH_LLI (0x08) +#define PL080_CH_CONTROL (0x0C) +#define PL080_CH_CONFIG (0x10) +#define PL080S_CH_CONTROL2 (0x10) +#define PL080S_CH_CONFIG (0x14) + +#define PL080_LLI_ADDR_MASK (0x3fffffff << 2) +#define PL080_LLI_ADDR_SHIFT (2) +#define PL080_LLI_LM_AHB2 (1 << 0) + +#define PL080_CONTROL_TC_IRQ_EN (1 << 31) +#define PL080_CONTROL_PROT_MASK (0x7 << 28) +#define PL080_CONTROL_PROT_SHIFT (28) +#define PL080_CONTROL_PROT_CACHE (1 << 30) +#define PL080_CONTROL_PROT_BUFF (1 << 29) +#define PL080_CONTROL_PROT_SYS (1 << 28) +#define PL080_CONTROL_DST_INCR (1 << 27) +#define PL080_CONTROL_SRC_INCR (1 << 26) +#define PL080_CONTROL_DST_AHB2 (1 << 25) +#define PL080_CONTROL_SRC_AHB2 (1 << 24) +#define PL080_CONTROL_DWIDTH_MASK (0x7 << 21) +#define PL080_CONTROL_DWIDTH_SHIFT (21) +#define PL080_CONTROL_SWIDTH_MASK (0x7 << 18) +#define PL080_CONTROL_SWIDTH_SHIFT (18) +#define PL080_CONTROL_DB_SIZE_MASK (0x7 << 15) +#define PL080_CONTROL_DB_SIZE_SHIFT (15) +#define PL080_CONTROL_SB_SIZE_MASK (0x7 << 12) +#define PL080_CONTROL_SB_SIZE_SHIFT (12) +#define PL080_CONTROL_TRANSFER_SIZE_MASK (0xfff << 0) +#define PL080_CONTROL_TRANSFER_SIZE_SHIFT (0) + +#define PL080_BSIZE_1 (0x0) +#define PL080_BSIZE_4 (0x1) +#define PL080_BSIZE_8 (0x2) +#define PL080_BSIZE_16 (0x3) +#define PL080_BSIZE_32 (0x4) +#define PL080_BSIZE_64 (0x5) +#define PL080_BSIZE_128 (0x6) +#define PL080_BSIZE_256 (0x7) + +#define PL080_WIDTH_8BIT (0x0) +#define PL080_WIDTH_16BIT (0x1) +#define PL080_WIDTH_32BIT (0x2) + +#define PL080N_CONFIG_ITPROT (1 << 20) +#define PL080N_CONFIG_SECPROT (1 << 19) +#define PL080_CONFIG_HALT (1 << 18) +#define PL080_CONFIG_ACTIVE (1 << 17) /* RO */ +#define PL080_CONFIG_LOCK (1 << 16) +#define PL080_CONFIG_TC_IRQ_MASK (1 << 15) +#define PL080_CONFIG_ERR_IRQ_MASK (1 << 14) +#define PL080_CONFIG_FLOW_CONTROL_MASK (0x7 << 11) +#define PL080_CONFIG_FLOW_CONTROL_SHIFT (11) +#define PL080_CONFIG_DST_SEL_MASK (0xf << 6) +#define PL080_CONFIG_DST_SEL_SHIFT (6) +#define PL080_CONFIG_SRC_SEL_MASK (0xf << 1) +#define PL080_CONFIG_SRC_SEL_SHIFT (1) +#define PL080_CONFIG_ENABLE (1 << 0) + +#define PL080_FLOW_MEM2MEM (0x0) +#define PL080_FLOW_MEM2PER (0x1) +#define PL080_FLOW_PER2MEM (0x2) +#define PL080_FLOW_SRC2DST (0x3) +#define PL080_FLOW_SRC2DST_DST (0x4) +#define PL080_FLOW_MEM2PER_PER (0x5) +#define PL080_FLOW_PER2MEM_PER (0x6) +#define PL080_FLOW_SRC2DST_SRC (0x7) + +/* DMA linked list chain structure */ + +struct pl080_lli { + u32 src_addr; + u32 dst_addr; + u32 next_lli; + u32 control0; +}; + +struct pl080s_lli { + u32 src_addr; + u32 dst_addr; + u32 next_lli; + u32 control0; + u32 control1; +}; + +#endif /* ASM_PL080_H */ -- cgit v1.2.3 From 6c0cc950ae670403a362bdcbf3cde0df33744928 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 9 Jan 2013 22:33:37 +0100 Subject: ACPI / PCI: Set root bridge ACPI handle in advance The ACPI handles of PCI root bridges need to be known to acpi_bind_one(), so that it can create the appropriate "firmware_node" and "physical_node" files for them, but currently the way it gets to know those handles is not exactly straightforward (to put it lightly). This is how it works, roughly: 1. acpi_bus_scan() finds the handle of a PCI root bridge, creates a struct acpi_device object for it and passes that object to acpi_pci_root_add(). 2. acpi_pci_root_add() creates a struct acpi_pci_root object, populates its "device" field with its argument's address (device->handle is the ACPI handle found in step 1). 3. The struct acpi_pci_root object created in step 2 is passed to pci_acpi_scan_root() and used to get resources that are passed to pci_create_root_bus(). 4. pci_create_root_bus() creates a struct pci_host_bridge object and passes its "dev" member to device_register(). 5. platform_notify(), which for systems with ACPI is set to acpi_platform_notify(), is called. So far, so good. Now it starts to be "interesting". 6. acpi_find_bridge_device() is used to find the ACPI handle of the given device (which is the PCI root bridge) and executes acpi_pci_find_root_bridge(), among other things, for the given device object. 7. acpi_pci_find_root_bridge() uses the name (sic!) of the given device object to extract the segment and bus numbers of the PCI root bridge and passes them to acpi_get_pci_rootbridge_handle(). 8. acpi_get_pci_rootbridge_handle() browses the list of ACPI PCI root bridges and finds the one that matches the given segment and bus numbers. Its handle is then used to initialize the ACPI handle of the PCI root bridge's device object by acpi_bind_one(). However, this is *exactly* the ACPI handle we started with in step 1. Needless to say, this is quite embarassing, but it may be avoided thanks to commit f3fd0c8 (ACPI: Allow ACPI handles of devices to be initialized in advance), which makes it possible to initialize the ACPI handle of a device before passing it to device_register(). Accordingly, add a new __weak routine, pcibios_root_bridge_prepare(), defaulting to an empty implementation that can be replaced by the interested architecutres (x86 and ia64 at the moment) with functions that will set the root bridge's ACPI handle before its dev member is passed to device_register(). Make both x86 and ia64 provide such implementations of pcibios_root_bridge_prepare() and remove acpi_pci_find_root_bridge() and acpi_get_pci_rootbridge_handle() that aren't necessary any more. Included is a fix for breakage on systems with non-ACPI PCI host bridges from Bjorn Helgaas. Signed-off-by: Rafael J. Wysocki Signed-off-by: Bjorn Helgaas --- include/linux/pci.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 907b455ab603..6860f4dec997 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -378,6 +378,8 @@ void pci_set_host_bridge_release(struct pci_host_bridge *bridge, void (*release_fn)(struct pci_host_bridge *), void *release_data); +int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge); + /* * The first PCI_BRIDGE_RESOURCE_NUM PCI bus resources (those that correspond * to P2P or CardBus bridge windows) go in a table. Additional ones (for -- cgit v1.2.3 From e7219858ac1f98213a4714d0e24e7a003e1bf6a2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?YOSHIFUJI=20Hideaki=20/=20=E5=90=89=E8=97=A4=E8=8B=B1?= =?UTF-8?q?=E6=98=8E?= Date: Sun, 13 Jan 2013 05:02:01 +0000 Subject: ipv6: Use ipv6_get_dsfield() instead of ipv6_tclass(). Commit 7a3198a8 ("ipv6: helper function to get tclass") introduced ipv6_tclass(), but similar function is already available as ipv6_get_dsfield(). We might be able to call ipv6_tclass() from ipv6_get_dsfield(), but it is confusing to have two versions. Signed-off-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller --- include/linux/ipv6.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h index faed1e357dd6..304a9f46b578 100644 --- a/include/linux/ipv6.h +++ b/include/linux/ipv6.h @@ -77,11 +77,6 @@ static inline struct ipv6hdr *ipipv6_hdr(const struct sk_buff *skb) return (struct ipv6hdr *)skb_transport_header(skb); } -static inline __u8 ipv6_tclass(const struct ipv6hdr *iph) -{ - return (ntohl(*(__be32 *)iph) >> 20) & 0xff; -} - /* This structure contains results of exthdrs parsing as offsets from skb->nh. -- cgit v1.2.3 From dd3332bfcb2223458f553f341d3388cb84040e6a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?YOSHIFUJI=20Hideaki=20/=20=E5=90=89=E8=97=A4=E8=8B=B1?= =?UTF-8?q?=E6=98=8E?= Date: Sun, 13 Jan 2013 05:02:45 +0000 Subject: ipv6: Store Router Alert option in IP6CB directly. Router Alert option is very small and we can store the value itself in the skb. Signed-off-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller --- include/linux/ipv6.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h index 304a9f46b578..e971e3742172 100644 --- a/include/linux/ipv6.h +++ b/include/linux/ipv6.h @@ -84,7 +84,7 @@ static inline struct ipv6hdr *ipipv6_hdr(const struct sk_buff *skb) struct inet6_skb_parm { int iif; - __u16 ra; + __be16 ra; __u16 hop; __u16 dst0; __u16 srcrt; @@ -100,6 +100,7 @@ struct inet6_skb_parm { #define IP6SKB_XFRM_TRANSFORMED 1 #define IP6SKB_FORWARDED 2 #define IP6SKB_REROUTED 4 +#define IP6SKB_ROUTERALERT 8 }; #define IP6CB(skb) ((struct inet6_skb_parm*)((skb)->cb)) -- cgit v1.2.3 From 25d46f43a911b08c5aa8c8fd4fe7fa9b36445068 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?YOSHIFUJI=20Hideaki=20/=20=E5=90=89=E8=97=A4=E8=8B=B1?= =?UTF-8?q?=E6=98=8E?= Date: Sun, 13 Jan 2013 16:02:06 +0000 Subject: ipv6: Move comment to right place. IN6ADDR_* and in6addr_* are not exported to userspace, and are defined in include/linux/in6.h. Signed-off-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller --- include/linux/in6.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/in6.h b/include/linux/in6.h index 9e2ae26fb598..a16e19349ec0 100644 --- a/include/linux/in6.h +++ b/include/linux/in6.h @@ -22,6 +22,10 @@ #include +/* IPv6 Wildcard Address (::) and Loopback Address (::1) defined in RFC2553 + * NOTE: Be aware the IN6ADDR_* constants and in6addr_* externals are defined + * in network byte order, not in host byte order as are the IPv4 equivalents + */ extern const struct in6_addr in6addr_any; #define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } } extern const struct in6_addr in6addr_loopback; -- cgit v1.2.3 From ff7ec345f0ece9ddbb28538b70ba0c7f0acc17dc Mon Sep 17 00:00:00 2001 From: Tony Prisk Date: Mon, 14 Jan 2013 17:58:21 +1300 Subject: timer: vt8500: Move timer code to drivers/clocksource This patch moves arch-vt8500/timer.c into drivers/clocksource and updates the necessary Kconfig/Makefile options. Signed-off-by: Tony Prisk --- include/linux/vt8500_timer.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 include/linux/vt8500_timer.h (limited to 'include/linux') diff --git a/include/linux/vt8500_timer.h b/include/linux/vt8500_timer.h new file mode 100644 index 000000000000..33b0ee87d083 --- /dev/null +++ b/include/linux/vt8500_timer.h @@ -0,0 +1,22 @@ +/* + * Copyright 2012 Tony Prisk + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __VT8500_TIMER_H +#define __VT8500_TIMER_H + +#include + +void vt8500_timer_init(void); + +#endif -- cgit v1.2.3 From 47db92f4a63499b1605b4c66f9347ba5479e7b19 Mon Sep 17 00:00:00 2001 From: Gerald Baeza Date: Fri, 21 Sep 2012 21:21:37 +0200 Subject: dmaengine: ste_dma40: physical channels number correction DMAC_ICFG[0:2]=SCHNB only allows to count 'multiple of 4' physical channels so it was ok with platforms having 8 channels but cannot be used for next versions (with 10 or 14 channels). This patch allows to provide the number of physical channels for a DMA device via platform_data, or still rely on SCHNB if platform_data announces 0 channel. Signed-off-by: Gerald Baeza Reviewed-by: Per Forlin Acked-by: Linus Walleij Acked-by: Vinod Koul Signed-off-by: Fabio Baltieri --- include/linux/platform_data/dma-ste-dma40.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/dma-ste-dma40.h b/include/linux/platform_data/dma-ste-dma40.h index 9ff93b065686..833cb959f3df 100644 --- a/include/linux/platform_data/dma-ste-dma40.h +++ b/include/linux/platform_data/dma-ste-dma40.h @@ -147,6 +147,9 @@ struct stedma40_chan_cfg { * @memcpy_conf_log: default configuration of logical channel memcpy * @disabled_channels: A vector, ending with -1, that marks physical channels * that are for different reasons not available for the driver. + * @num_of_phy_chans: The number of physical channels implemented in HW. + * 0 means reading the number of channels from DMA HW but this is only valid + * for 'multiple of 4' channels, like 8. */ struct stedma40_platform_data { u32 dev_len; @@ -158,6 +161,7 @@ struct stedma40_platform_data { struct stedma40_chan_cfg *memcpy_conf_log; int disabled_channels[STEDMA40_MAX_PHYS]; bool use_esram_lcla; + int num_of_phy_chans; }; #ifdef CONFIG_STE_DMA40 -- cgit v1.2.3 From 762eb33fdebed34d98943d85ee1425663d7cceaa Mon Sep 17 00:00:00 2001 From: Fabio Baltieri Date: Thu, 13 Dec 2012 11:38:39 +0100 Subject: dmaengine: ste_dma40: add missing kernel-doc entry Acked-by: Linus Walleij Acked-by: Vinod Koul Signed-off-by: Fabio Baltieri --- include/linux/platform_data/dma-ste-dma40.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/dma-ste-dma40.h b/include/linux/platform_data/dma-ste-dma40.h index 833cb959f3df..b99024ba94ec 100644 --- a/include/linux/platform_data/dma-ste-dma40.h +++ b/include/linux/platform_data/dma-ste-dma40.h @@ -147,6 +147,7 @@ struct stedma40_chan_cfg { * @memcpy_conf_log: default configuration of logical channel memcpy * @disabled_channels: A vector, ending with -1, that marks physical channels * that are for different reasons not available for the driver. + * @use_esram_lcla: flag for mapping the lcla into esram region * @num_of_phy_chans: The number of physical channels implemented in HW. * 0 means reading the number of channels from DMA HW but this is only valid * for 'multiple of 4' channels, like 8. -- cgit v1.2.3 From 7407048bec896268b50e3c43c1d012a4764dc210 Mon Sep 17 00:00:00 2001 From: Fabio Baltieri Date: Tue, 18 Dec 2012 12:25:14 +0100 Subject: dmaengine: ste_dma40: add software lli support This patch add support to manage LLI by SW for select phy channels. There is a HW issue in certain controllers due to which on certain occassions HW LLI cannot be used on some physical channels. To avoid the HW issue on a specific phy channel, the phy channel number can be added to the list of soft_lli_channels and there after all the transfers on that channel will use software LLI, for peripheral to memory transfers. SoftLLI introduces relink overhead, that could impact performace for certain use cases. This is based on a previous patch of Narayanan Gopalakrishnan. Cc: Shreshtha Kumar Sahu Acked-by: Linus Walleij Acked-by: Vinod Koul Signed-off-by: Fabio Baltieri --- include/linux/platform_data/dma-ste-dma40.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/dma-ste-dma40.h b/include/linux/platform_data/dma-ste-dma40.h index b99024ba94ec..4b781014b0a0 100644 --- a/include/linux/platform_data/dma-ste-dma40.h +++ b/include/linux/platform_data/dma-ste-dma40.h @@ -147,6 +147,12 @@ struct stedma40_chan_cfg { * @memcpy_conf_log: default configuration of logical channel memcpy * @disabled_channels: A vector, ending with -1, that marks physical channels * that are for different reasons not available for the driver. + * @soft_lli_chans: A vector, that marks physical channels will use LLI by SW + * which avoids HW bug that exists in some versions of the controller. + * SoftLLI introduces relink overhead that could impact performace for + * certain use cases. + * @num_of_soft_lli_chans: The number of channels that needs to be configured + * to use SoftLLI. * @use_esram_lcla: flag for mapping the lcla into esram region * @num_of_phy_chans: The number of physical channels implemented in HW. * 0 means reading the number of channels from DMA HW but this is only valid @@ -161,6 +167,8 @@ struct stedma40_platform_data { struct stedma40_chan_cfg *memcpy_conf_phy; struct stedma40_chan_cfg *memcpy_conf_log; int disabled_channels[STEDMA40_MAX_PHYS]; + int *soft_lli_chans; + int num_of_soft_lli_chans; bool use_esram_lcla; int num_of_phy_chans; }; -- cgit v1.2.3 From 3a366e614d0837d9fc23f78cdb1a1186ebc3387f Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 11 Jan 2013 13:06:33 -0800 Subject: block: add missing block_bio_complete() tracepoint bio completion didn't kick block_bio_complete TP. Only dm was explicitly triggering the TP on IO completion. This makes block_bio_complete TP useless for tracers which want to know about bios, and all other bio based drivers skip generating blktrace completion events. This patch makes all bio completions via bio_endio() generate block_bio_complete TP. * Explicit trace_block_bio_complete() invocation removed from dm and the trace point is unexported. * @rq dropped from trace_block_bio_complete(). bios may fly around w/o queue associated. Verifying and accessing the assocaited queue belongs to TP probes. * blktrace now gets both request and bio completions. Make it ignore bio completions if request completion path is happening. This makes all bio based drivers generate blktrace completion events properly and makes the block_bio_complete TP actually useful. v2: With this change, block_bio_complete TP could be invoked on sg commands which have bio's with %NULL bi_bdev. Update TP assignment code to check whether bio->bi_bdev is %NULL before dereferencing. Signed-off-by: Tejun Heo Original-patch-by: Namhyung Kim Cc: Tejun Heo Cc: Steven Rostedt Cc: Alasdair Kergon Cc: dm-devel@redhat.com Cc: Neil Brown Signed-off-by: Jens Axboe --- include/linux/blktrace_api.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h index 7c2e030e72f1..0ea61e07a91c 100644 --- a/include/linux/blktrace_api.h +++ b/include/linux/blktrace_api.h @@ -12,6 +12,7 @@ struct blk_trace { int trace_state; + bool rq_based; struct rchan *rchan; unsigned long __percpu *sequence; unsigned char __percpu *msg_data; -- cgit v1.2.3 From f0059afd3e6e7aa1a0ffc23468b74c43d47660b8 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 11 Jan 2013 13:06:35 -0800 Subject: buffer: make touch_buffer() an exported function We want to add a trace point to touch_buffer() but macros and inline functions defined in header files can't have tracing points. Move touch_buffer() to fs/buffer.c and make it a proper function. The new exported function is also declared inline. As most uses of touch_buffer() are inside buffer.c with nilfs2 as the only other user, the effect of this change should be negligible. Signed-off-by: Tejun Heo Cc: Steven Rostedt Signed-off-by: Jens Axboe --- include/linux/buffer_head.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h index 458f497738a4..5afc4f94d110 100644 --- a/include/linux/buffer_head.h +++ b/include/linux/buffer_head.h @@ -126,7 +126,6 @@ BUFFER_FNS(Write_EIO, write_io_error) BUFFER_FNS(Unwritten, unwritten) #define bh_offset(bh) ((unsigned long)(bh)->b_data & ~PAGE_MASK) -#define touch_buffer(bh) mark_page_accessed(bh->b_page) /* If we *know* page->private refers to buffer_heads */ #define page_buffers(page) \ @@ -142,6 +141,7 @@ BUFFER_FNS(Unwritten, unwritten) void mark_buffer_dirty(struct buffer_head *bh); void init_buffer(struct buffer_head *, bh_end_io_t *, void *); +void touch_buffer(struct buffer_head *bh); void set_bh_page(struct buffer_head *bh, struct page *page, unsigned long offset); int try_to_free_buffers(struct page *); -- cgit v1.2.3 From ccf04c51004d0b973a688a91c879e2d91780d03c Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Fri, 14 Dec 2012 11:36:41 +0100 Subject: mtd: omap-nand: pass device_node in platform data Pass an optional device_node pointer in the platform data, which in turn will be put into a mtd_part_parser_data. This way, code that sets up the platform devices can pass along the node from DT so that the partitions can be parsed. For non-DT boards, this change has no effect. Signed-off-by: Daniel Mack Acked-by: Grant Likely Acked-by: Artem Bityutskiy Signed-off-by: Tony Lindgren --- include/linux/platform_data/mtd-nand-omap2.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/mtd-nand-omap2.h b/include/linux/platform_data/mtd-nand-omap2.h index 24d32ca34bef..6bf9ef43ddb1 100644 --- a/include/linux/platform_data/mtd-nand-omap2.h +++ b/include/linux/platform_data/mtd-nand-omap2.h @@ -60,6 +60,8 @@ struct omap_nand_platform_data { int devsize; enum omap_ecc ecc_opt; struct gpmc_nand_regs reg; -}; + /* for passing the partitions */ + struct device_node *of_node; +}; #endif -- cgit v1.2.3 From 803739d25c2343da6d2f95eebdcbc08bf67097d4 Mon Sep 17 00:00:00 2001 From: Shane Huang Date: Mon, 17 Dec 2012 23:18:59 +0800 Subject: [libata] replace sata_settings with devslp_timing NCQ capability was used to check availability of SATA Settings page from Identify Device Data Log, which contains DevSlp timing variables. It does not work on some HDDs and leads to error messages. IDENTIFY word 78 bit 5(Hardware Feature Control) can't work either because it is only the sufficient condition of Identify Device data log, not the necessary condition. This patch replaced ata_device->sata_settings with ->devslp_timing to only save DevSlp timing variables(8 bytes), instead of the whole SATA Settings page(512 bytes). Addresses https://bugzilla.kernel.org/show_bug.cgi?id=51881 Reported-by: Borislav Petkov Signed-off-by: Shane Huang Cc: stable@vger.kernel.org Signed-off-by: Jeff Garzik --- include/linux/ata.h | 8 +++++--- include/linux/libata.h | 4 ++-- 2 files changed, 7 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ata.h b/include/linux/ata.h index 408da9502177..8f7a3d68371a 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -297,10 +297,12 @@ enum { ATA_LOG_SATA_NCQ = 0x10, ATA_LOG_SATA_ID_DEV_DATA = 0x30, ATA_LOG_SATA_SETTINGS = 0x08, - ATA_LOG_DEVSLP_MDAT = 0x30, + ATA_LOG_DEVSLP_OFFSET = 0x30, + ATA_LOG_DEVSLP_SIZE = 0x08, + ATA_LOG_DEVSLP_MDAT = 0x00, ATA_LOG_DEVSLP_MDAT_MASK = 0x1F, - ATA_LOG_DEVSLP_DETO = 0x31, - ATA_LOG_DEVSLP_VALID = 0x37, + ATA_LOG_DEVSLP_DETO = 0x01, + ATA_LOG_DEVSLP_VALID = 0x07, ATA_LOG_DEVSLP_VALID_MASK = 0x80, /* READ/WRITE LONG (obsolete) */ diff --git a/include/linux/libata.h b/include/linux/libata.h index 83ba0ab2c915..649e5f86b5f0 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -652,8 +652,8 @@ struct ata_device { u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ }; - /* Identify Device Data Log (30h), SATA Settings (page 08h) */ - u8 sata_settings[ATA_SECT_SIZE]; + /* DEVSLP Timing Variables from Identify Device Data Log */ + u8 devslp_timing[ATA_LOG_DEVSLP_SIZE]; /* error history */ int spdn_cnt; -- cgit v1.2.3 From 1757d902b029a29dfcef63609964385cf8865b5a Mon Sep 17 00:00:00 2001 From: David Milburn Date: Mon, 14 Jan 2013 09:59:30 -0600 Subject: libata: export host controller number thru /sys As low-level drivers register their host controller(s), keep track of the number of controllers and export thru /sys in a format so that udev can better match up port numbers with a specific controller. # pwd /sys/devices/pci0000:00 # find . -name 'ata*' -print (2nd controller with port multiplier attached) ./0000:00:1e.0/0000:05:01.0/ata2.7 ./0000:00:1e.0/0000:05:01.0/ata2.7/link7/dev7.0/ata_device ./0000:00:1e.0/0000:05:01.0/ata2.7/link7/ata_link ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.0/dev7.0.0/ata_device ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.0/ata_link ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.1/dev7.1.0/ata_device ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.1/ata_link ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.2/dev7.2.0/ata_device ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.2/ata_link ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.3/dev7.3.0/ata_device ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.3/ata_link ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.4/dev7.4.0/ata_device ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.4/ata_link ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.5/dev7.5.0/ata_device ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.5/ata_link ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.6/dev7.6.0/ata_device ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.6/ata_link ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.7/dev7.7.0/ata_device ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.7/ata_link ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.8/dev7.8.0/ata_device ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.8/ata_link ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.9/dev7.9.0/ata_device ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.9/ata_link ./0000:00:1e.0/0000:05:01.0/ata2.7/ata_port ./0000:00:1e.0/0000:05:01.0/ata2.7/ata_port/ata2.7 ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.10/dev7.10.0/ata_device ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.10/ata_link ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.11/dev7.11.0/ata_device ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.11/ata_link ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.12/dev7.12.0/ata_device ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.12/ata_link ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.13/dev7.13.0/ata_device ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.13/ata_link ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.14/dev7.14.0/ata_device ./0000:00:1e.0/0000:05:01.0/ata2.7/link7.14/ata_link ./0000:00:1e.0/0000:05:01.0/ata2.8 ./0000:00:1e.0/0000:05:01.0/ata2.8/link8/dev8.0/ata_device ./0000:00:1e.0/0000:05:01.0/ata2.8/link8/ata_link ./0000:00:1e.0/0000:05:01.0/ata2.8/ata_port ./0000:00:1e.0/0000:05:01.0/ata2.8/ata_port/ata2.8 (1st controller) ./0000:00:1f.2/ata1.1 ./0000:00:1f.2/ata1.1/link1/dev1.0/ata_device ./0000:00:1f.2/ata1.1/link1/ata_link ./0000:00:1f.2/ata1.1/ata_port ./0000:00:1f.2/ata1.1/ata_port/ata1.1 ./0000:00:1f.2/ata1.2 ./0000:00:1f.2/ata1.2/link2/dev2.0/ata_device ./0000:00:1f.2/ata1.2/link2/ata_link ./0000:00:1f.2/ata1.2/ata_port ./0000:00:1f.2/ata1.2/ata_port/ata1.2 ./0000:00:1f.2/ata1.3 ./0000:00:1f.2/ata1.3/link3/dev3.0/ata_device ./0000:00:1f.2/ata1.3/link3/ata_link ./0000:00:1f.2/ata1.3/ata_port ./0000:00:1f.2/ata1.3/ata_port/ata1.3 ./0000:00:1f.2/ata1.4 ./0000:00:1f.2/ata1.4/link4/dev4.0/ata_device ./0000:00:1f.2/ata1.4/link4/ata_link ./0000:00:1f.2/ata1.4/ata_port ./0000:00:1f.2/ata1.4/ata_port/ata1.4 ./0000:00:1f.2/ata1.5 ./0000:00:1f.2/ata1.5/link5/dev5.0/ata_device ./0000:00:1f.2/ata1.5/link5/ata_link ./0000:00:1f.2/ata1.5/ata_port ./0000:00:1f.2/ata1.5/ata_port/ata1.5 ./0000:00:1f.2/ata1.6 ./0000:00:1f.2/ata1.6/link6/dev6.0/ata_device ./0000:00:1f.2/ata1.6/link6/ata_link ./0000:00:1f.2/ata1.6/ata_port ./0000:00:1f.2/ata1.6/ata_port/ata1.6 Signed-off-by: David Milburn Signed-off-by: Jeff Garzik --- include/linux/libata.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index 649e5f86b5f0..7ae207eb29a0 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -546,6 +546,7 @@ struct ata_host { void *private_data; struct ata_port_operations *ops; unsigned long flags; + unsigned int host_id; /* user visible host ID */ struct mutex eh_mutex; struct task_struct *eh_owner; -- cgit v1.2.3 From 6bf2e5461479c4511f59946a7378db576b04dbc5 Mon Sep 17 00:00:00 2001 From: Nathan Hintz Date: Fri, 11 Jan 2013 22:07:22 -0800 Subject: bcma: fix bcm4716/bcm4748 i2s irqflag The default irqflag assignment for the I2S core on some Broadcom 4716/4748 devices is invalid and needs to be corrected (from the Broadcom SDK). Signed-off-by: Nathan Hintz Acked-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/bcma/bcma_driver_mips.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_mips.h b/include/linux/bcma/bcma_driver_mips.h index 73c7f4b882cc..0d1ea297851a 100644 --- a/include/linux/bcma/bcma_driver_mips.h +++ b/include/linux/bcma/bcma_driver_mips.h @@ -28,6 +28,7 @@ #define BCMA_MIPS_MIPS74K_GPIOEN 0x0048 #define BCMA_MIPS_MIPS74K_CLKCTLST 0x01E0 +#define BCMA_MIPS_OOBSELINA74 0x004 #define BCMA_MIPS_OOBSELOUTA30 0x100 struct bcma_device; -- cgit v1.2.3 From f9a8f83b04e0c362a2fc660dbad980d24af209fc Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Mon, 14 Jan 2013 00:52:52 +0000 Subject: net: phy: remove flags argument from phy_{attach, connect, connect_direct} The flags argument of the phy_{attach,connect,connect_direct} functions is then used to assign a struct phy_device dev_flags with its value. All callers but the tg3 driver pass the flag 0, which results in the underlying PHY drivers in drivers/net/phy/ not being able to actually use any of the flags they would set in dev_flags. This patch gets rid of the flags argument, and passes phydev->dev_flags to the internal PHY library call phy_attach_direct() such that drivers which actually modify a phy device dev_flags get the value preserved for use by the underlying phy driver. Acked-by: Kosta Zertsekel Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- include/linux/phy.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/phy.h b/include/linux/phy.h index 93b3cf77f564..33999adbf8c8 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -506,13 +506,13 @@ struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45); int phy_device_register(struct phy_device *phy); int phy_init_hw(struct phy_device *phydev); struct phy_device * phy_attach(struct net_device *dev, - const char *bus_id, u32 flags, phy_interface_t interface); + const char *bus_id, phy_interface_t interface); struct phy_device *phy_find_first(struct mii_bus *bus); int phy_connect_direct(struct net_device *dev, struct phy_device *phydev, - void (*handler)(struct net_device *), u32 flags, + void (*handler)(struct net_device *), phy_interface_t interface); struct phy_device * phy_connect(struct net_device *dev, const char *bus_id, - void (*handler)(struct net_device *), u32 flags, + void (*handler)(struct net_device *), phy_interface_t interface); void phy_disconnect(struct phy_device *phydev); void phy_detach(struct phy_device *phydev); -- cgit v1.2.3 From 5dbbaf2de89613d19a9286d4db0a535ca2735d26 Mon Sep 17 00:00:00 2001 From: Paul Moore Date: Mon, 14 Jan 2013 07:12:19 +0000 Subject: tun: fix LSM/SELinux labeling of tun/tap devices This patch corrects some problems with LSM/SELinux that were introduced with the multiqueue patchset. The problem stems from the fact that the multiqueue work changed the relationship between the tun device and its associated socket; before the socket persisted for the life of the device, however after the multiqueue changes the socket only persisted for the life of the userspace connection (fd open). For non-persistent devices this is not an issue, but for persistent devices this can cause the tun device to lose its SELinux label. We correct this problem by adding an opaque LSM security blob to the tun device struct which allows us to have the LSM security state, e.g. SELinux labeling information, persist for the lifetime of the tun device. In the process we tweak the LSM hooks to work with this new approach to TUN device/socket labeling and introduce a new LSM hook, security_tun_dev_attach_queue(), to approve requests to attach to a TUN queue via TUNSETQUEUE. The SELinux code has been adjusted to match the new LSM hooks, the other LSMs do not make use of the LSM TUN controls. This patch makes use of the recently added "tun_socket:attach_queue" permission to restrict access to the TUNSETQUEUE operation. On older SELinux policies which do not define the "tun_socket:attach_queue" permission the access control decision for TUNSETQUEUE will be handled according to the SELinux policy's unknown permission setting. Signed-off-by: Paul Moore Acked-by: Eric Paris Tested-by: Jason Wang Signed-off-by: David S. Miller --- include/linux/security.h | 59 +++++++++++++++++++++++++++++++++++++----------- 1 file changed, 46 insertions(+), 13 deletions(-) (limited to 'include/linux') diff --git a/include/linux/security.h b/include/linux/security.h index 0f6afc657f77..eee7478cda70 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -989,17 +989,29 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * tells the LSM to decrement the number of secmark labeling rules loaded * @req_classify_flow: * Sets the flow's sid to the openreq sid. + * @tun_dev_alloc_security: + * This hook allows a module to allocate a security structure for a TUN + * device. + * @security pointer to a security structure pointer. + * Returns a zero on success, negative values on failure. + * @tun_dev_free_security: + * This hook allows a module to free the security structure for a TUN + * device. + * @security pointer to the TUN device's security structure * @tun_dev_create: * Check permissions prior to creating a new TUN device. - * @tun_dev_post_create: - * This hook allows a module to update or allocate a per-socket security - * structure. - * @sk contains the newly created sock structure. + * @tun_dev_attach_queue: + * Check permissions prior to attaching to a TUN device queue. + * @security pointer to the TUN device's security structure. * @tun_dev_attach: - * Check permissions prior to attaching to a persistent TUN device. This - * hook can also be used by the module to update any security state + * This hook can be used by the module to update any security state * associated with the TUN device's sock structure. * @sk contains the existing sock structure. + * @security pointer to the TUN device's security structure. + * @tun_dev_open: + * This hook can be used by the module to update any security state + * associated with the TUN device's security structure. + * @security pointer to the TUN devices's security structure. * * Security hooks for XFRM operations. * @@ -1620,9 +1632,12 @@ struct security_operations { void (*secmark_refcount_inc) (void); void (*secmark_refcount_dec) (void); void (*req_classify_flow) (const struct request_sock *req, struct flowi *fl); - int (*tun_dev_create)(void); - void (*tun_dev_post_create)(struct sock *sk); - int (*tun_dev_attach)(struct sock *sk); + int (*tun_dev_alloc_security) (void **security); + void (*tun_dev_free_security) (void *security); + int (*tun_dev_create) (void); + int (*tun_dev_attach_queue) (void *security); + int (*tun_dev_attach) (struct sock *sk, void *security); + int (*tun_dev_open) (void *security); #endif /* CONFIG_SECURITY_NETWORK */ #ifdef CONFIG_SECURITY_NETWORK_XFRM @@ -2566,9 +2581,12 @@ void security_inet_conn_established(struct sock *sk, int security_secmark_relabel_packet(u32 secid); void security_secmark_refcount_inc(void); void security_secmark_refcount_dec(void); +int security_tun_dev_alloc_security(void **security); +void security_tun_dev_free_security(void *security); int security_tun_dev_create(void); -void security_tun_dev_post_create(struct sock *sk); -int security_tun_dev_attach(struct sock *sk); +int security_tun_dev_attach_queue(void *security); +int security_tun_dev_attach(struct sock *sk, void *security); +int security_tun_dev_open(void *security); #else /* CONFIG_SECURITY_NETWORK */ static inline int security_unix_stream_connect(struct sock *sock, @@ -2733,16 +2751,31 @@ static inline void security_secmark_refcount_dec(void) { } +static inline int security_tun_dev_alloc_security(void **security) +{ + return 0; +} + +static inline void security_tun_dev_free_security(void *security) +{ +} + static inline int security_tun_dev_create(void) { return 0; } -static inline void security_tun_dev_post_create(struct sock *sk) +static inline int security_tun_dev_attach_queue(void *security) +{ + return 0; +} + +static inline int security_tun_dev_attach(struct sock *sk, void *security) { + return 0; } -static inline int security_tun_dev_attach(struct sock *sk) +static inline int security_tun_dev_open(void *security) { return 0; } -- cgit v1.2.3 From c1b724f6659a7e9e32f8fcf6409d053e1b7bccad Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Thu, 3 Jan 2013 20:23:13 -0700 Subject: ARM: bcm2835: make use of CLKSRC_OF Using CLKSRC_OF enables deletion of the SoC-specific header bcm2835_timer.h, replacing the custom function bcm2835_timer_init() with the standardized automatic clocksource_of_init(). Signed-off-by: Stephen Warren --- include/linux/bcm2835_timer.h | 22 ---------------------- 1 file changed, 22 deletions(-) delete mode 100644 include/linux/bcm2835_timer.h (limited to 'include/linux') diff --git a/include/linux/bcm2835_timer.h b/include/linux/bcm2835_timer.h deleted file mode 100644 index ca17aa817006..000000000000 --- a/include/linux/bcm2835_timer.h +++ /dev/null @@ -1,22 +0,0 @@ -/* - * Copyright 2012 Simon Arlott - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#ifndef __BCM2835_TIMER_H -#define __BCM2835_TIMER_H - -#include - -extern void bcm2835_timer_init(void); - -#endif -- cgit v1.2.3 From 154f757fd315270e42bd17f4a68d84bd070e5758 Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Tue, 27 Nov 2012 09:40:32 +0900 Subject: extcon: max77693: Remove duplicate code by making function This patch make max77693-muic_get_cable_type() function to remove duplicate code because almost internal function need to read adc/adc1k/adclow/chg_type value of MUIC register. Also, this patch add description of internal function move field constant of muic device from extcon-max77693 driver to max77693 header file because of it is needed for masking some interrupt through platform data. Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- include/linux/mfd/max77693-private.h | 86 ++++++++++++++++++++++++++++++++++++ 1 file changed, 86 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/max77693-private.h b/include/linux/mfd/max77693-private.h index 1eeae5c07915..5b18ecde69b5 100644 --- a/include/linux/mfd/max77693-private.h +++ b/include/linux/mfd/max77693-private.h @@ -106,6 +106,92 @@ enum max77693_muic_reg { MAX77693_MUIC_REG_END, }; +/* MAX77693 MUIC - STATUS1~3 Register */ +#define STATUS1_ADC_SHIFT (0) +#define STATUS1_ADCLOW_SHIFT (5) +#define STATUS1_ADCERR_SHIFT (6) +#define STATUS1_ADC1K_SHIFT (7) +#define STATUS1_ADC_MASK (0x1f << STATUS1_ADC_SHIFT) +#define STATUS1_ADCLOW_MASK (0x1 << STATUS1_ADCLOW_SHIFT) +#define STATUS1_ADCERR_MASK (0x1 << STATUS1_ADCERR_SHIFT) +#define STATUS1_ADC1K_MASK (0x1 << STATUS1_ADC1K_SHIFT) + +#define STATUS2_CHGTYP_SHIFT (0) +#define STATUS2_CHGDETRUN_SHIFT (3) +#define STATUS2_DCDTMR_SHIFT (4) +#define STATUS2_DXOVP_SHIFT (5) +#define STATUS2_VBVOLT_SHIFT (6) +#define STATUS2_VIDRM_SHIFT (7) +#define STATUS2_CHGTYP_MASK (0x7 << STATUS2_CHGTYP_SHIFT) +#define STATUS2_CHGDETRUN_MASK (0x1 << STATUS2_CHGDETRUN_SHIFT) +#define STATUS2_DCDTMR_MASK (0x1 << STATUS2_DCDTMR_SHIFT) +#define STATUS2_DXOVP_MASK (0x1 << STATUS2_DXOVP_SHIFT) +#define STATUS2_VBVOLT_MASK (0x1 << STATUS2_VBVOLT_SHIFT) +#define STATUS2_VIDRM_MASK (0x1 << STATUS2_VIDRM_SHIFT) + +#define STATUS3_OVP_SHIFT (2) +#define STATUS3_OVP_MASK (0x1 << STATUS3_OVP_SHIFT) + +/* MAX77693 CDETCTRL1~2 register */ +#define CDETCTRL1_CHGDETEN_SHIFT (0) +#define CDETCTRL1_CHGTYPMAN_SHIFT (1) +#define CDETCTRL1_DCDEN_SHIFT (2) +#define CDETCTRL1_DCD2SCT_SHIFT (3) +#define CDETCTRL1_CDDELAY_SHIFT (4) +#define CDETCTRL1_DCDCPL_SHIFT (5) +#define CDETCTRL1_CDPDET_SHIFT (7) +#define CDETCTRL1_CHGDETEN_MASK (0x1 << CDETCTRL1_CHGDETEN_SHIFT) +#define CDETCTRL1_CHGTYPMAN_MASK (0x1 << CDETCTRL1_CHGTYPMAN_SHIFT) +#define CDETCTRL1_DCDEN_MASK (0x1 << CDETCTRL1_DCDEN_SHIFT) +#define CDETCTRL1_DCD2SCT_MASK (0x1 << CDETCTRL1_DCD2SCT_SHIFT) +#define CDETCTRL1_CDDELAY_MASK (0x1 << CDETCTRL1_CDDELAY_SHIFT) +#define CDETCTRL1_DCDCPL_MASK (0x1 << CDETCTRL1_DCDCPL_SHIFT) +#define CDETCTRL1_CDPDET_MASK (0x1 << CDETCTRL1_CDPDET_SHIFT) + +#define CDETCTRL2_VIDRMEN_SHIFT (1) +#define CDETCTRL2_DXOVPEN_SHIFT (3) +#define CDETCTRL2_VIDRMEN_MASK (0x1 << CDETCTRL2_VIDRMEN_SHIFT) +#define CDETCTRL2_DXOVPEN_MASK (0x1 << CDETCTRL2_DXOVPEN_SHIFT) + +/* MAX77693 MUIC - CONTROL1~3 register */ +#define COMN1SW_SHIFT (0) +#define COMP2SW_SHIFT (3) +#define COMN1SW_MASK (0x7 << COMN1SW_SHIFT) +#define COMP2SW_MASK (0x7 << COMP2SW_SHIFT) +#define COMP_SW_MASK (COMP2SW_MASK | COMN1SW_MASK) +#define CONTROL1_SW_USB ((1 << COMP2SW_SHIFT) \ + | (1 << COMN1SW_SHIFT)) +#define CONTROL1_SW_AUDIO ((2 << COMP2SW_SHIFT) \ + | (2 << COMN1SW_SHIFT)) +#define CONTROL1_SW_UART ((3 << COMP2SW_SHIFT) \ + | (3 << COMN1SW_SHIFT)) +#define CONTROL1_SW_OPEN ((0 << COMP2SW_SHIFT) \ + | (0 << COMN1SW_SHIFT)) + +#define CONTROL2_LOWPWR_SHIFT (0) +#define CONTROL2_ADCEN_SHIFT (1) +#define CONTROL2_CPEN_SHIFT (2) +#define CONTROL2_SFOUTASRT_SHIFT (3) +#define CONTROL2_SFOUTORD_SHIFT (4) +#define CONTROL2_ACCDET_SHIFT (5) +#define CONTROL2_USBCPINT_SHIFT (6) +#define CONTROL2_RCPS_SHIFT (7) +#define CONTROL2_LOWPWR_MASK (0x1 << CONTROL2_LOWPWR_SHIFT) +#define CONTROL2_ADCEN_MASK (0x1 << CONTROL2_ADCEN_SHIFT) +#define CONTROL2_CPEN_MASK (0x1 << CONTROL2_CPEN_SHIFT) +#define CONTROL2_SFOUTASRT_MASK (0x1 << CONTROL2_SFOUTASRT_SHIFT) +#define CONTROL2_SFOUTORD_MASK (0x1 << CONTROL2_SFOUTORD_SHIFT) +#define CONTROL2_ACCDET_MASK (0x1 << CONTROL2_ACCDET_SHIFT) +#define CONTROL2_USBCPINT_MASK (0x1 << CONTROL2_USBCPINT_SHIFT) +#define CONTROL2_RCPS_MASK (0x1 << CONTROL2_RCPS_SHIFT) + +#define CONTROL3_JIGSET_SHIFT (0) +#define CONTROL3_BTLDSET_SHIFT (2) +#define CONTROL3_ADCDBSET_SHIFT (4) +#define CONTROL3_JIGSET_MASK (0x3 << CONTROL3_JIGSET_SHIFT) +#define CONTROL3_BTLDSET_MASK (0x3 << CONTROL3_BTLDSET_SHIFT) +#define CONTROL3_ADCDBSET_MASK (0x3 << CONTROL3_ADCDBSET_SHIFT) + /* Slave addr = 0x90: Haptic */ enum max77693_haptic_reg { MAX77693_HAPTIC_REG_STATUS = 0x00, -- cgit v1.2.3 From 297620fd1e14edf5fefa1736f873b9228336eee1 Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Wed, 26 Dec 2012 13:10:11 +0900 Subject: extcon: max77693: Check the state/type of cable after boot completed This patch check the state/type of cable after completing the initialization of platform and notify platform of cable state/type through extcon. If extcon provider driver notify the state/type of cable before completing platform boot, this uevent is unused and ignored. Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- include/linux/mfd/max77693.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/max77693.h b/include/linux/mfd/max77693.h index fe03b2d35d4f..9aa9c203f28b 100644 --- a/include/linux/mfd/max77693.h +++ b/include/linux/mfd/max77693.h @@ -38,6 +38,8 @@ struct max77693_reg_data { struct max77693_muic_platform_data { struct max77693_reg_data *init_data; int num_init_data; + + int detcable_delay_ms; }; struct max77693_platform_data { -- cgit v1.2.3 From 2b75799f5ae9f31ea9778003591fd295d3bc3159 Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Thu, 6 Dec 2012 21:27:56 +0900 Subject: extcon: max77693: Set default uart/usb path by using platform data This patch determine default uart/usb path by using platform data. The MAX77693 MUIC device can possibliy set USB/UART/AUDIO/USB_AUX /UART_AUX to internal h/w path of MUIC device. So, drvier should determine default uart/usb path. Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- include/linux/mfd/max77693.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/max77693.h b/include/linux/mfd/max77693.h index 9aa9c203f28b..3109a6c5c948 100644 --- a/include/linux/mfd/max77693.h +++ b/include/linux/mfd/max77693.h @@ -40,6 +40,13 @@ struct max77693_muic_platform_data { int num_init_data; int detcable_delay_ms; + + /* + * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB + * h/w path of COMP2/COMN1 on CONTROL1 register. + */ + int path_usb; + int path_uart; }; struct max77693_platform_data { -- cgit v1.2.3 From b17e54625cff1b06aec9df505b46c9bcdcd4823d Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 11 Jan 2013 08:55:24 +0900 Subject: extcon: arizona: Allow configuration of MICBIAS rise time Allow configuration of the rise time for MICBIAS via platform data, the delay required depends on things like the external component selection. Signed-off-by: Mark Brown Signed-off-by: Chanwoo Choi Acked-by: MyungJoo Ham --- include/linux/mfd/arizona/pdata.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h index 8b1d1daaae16..5b0508853290 100644 --- a/include/linux/mfd/arizona/pdata.h +++ b/include/linux/mfd/arizona/pdata.h @@ -99,6 +99,9 @@ struct arizona_pdata { /** GPIO for mic detection polarity */ int micd_pol_gpio; + /** Mic detect ramp rate */ + int micd_bias_start_time; + /** Headset polarity configurations */ struct arizona_micd_config *micd_configs; int num_micd_configs; -- cgit v1.2.3 From dab63eb25ced7539a51b8f4218f7b6b56d34df22 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 11 Jan 2013 08:55:36 +0900 Subject: extcon: arizona: Use microphone clamp function if available Newer Arizona devices include a microphone clamp function which is tied to jack detect. Activate this feature when present in order to ensure best performance of the subsystem. Signed-off-by: Mark Brown Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- include/linux/mfd/arizona/core.h | 4 +++- include/linux/mfd/arizona/registers.h | 28 ++++++++++++++++++++++++++++ 2 files changed, 31 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/arizona/core.h b/include/linux/mfd/arizona/core.h index a580363a7d29..a710255528d7 100644 --- a/include/linux/mfd/arizona/core.h +++ b/include/linux/mfd/arizona/core.h @@ -75,8 +75,10 @@ enum arizona_type { #define ARIZONA_IRQ_DCS_HP_DONE 47 #define ARIZONA_IRQ_FLL2_CLOCK_OK 48 #define ARIZONA_IRQ_FLL1_CLOCK_OK 49 +#define ARIZONA_IRQ_MICD_CLAMP_RISE 50 +#define ARIZONA_IRQ_MICD_CLAMP_FALL 51 -#define ARIZONA_NUM_IRQ 50 +#define ARIZONA_NUM_IRQ 52 struct snd_soc_dapm_context; diff --git a/include/linux/mfd/arizona/registers.h b/include/linux/mfd/arizona/registers.h index 1f6fe31a4d5c..f3211f06cec6 100644 --- a/include/linux/mfd/arizona/registers.h +++ b/include/linux/mfd/arizona/registers.h @@ -119,6 +119,7 @@ #define ARIZONA_ACCESSORY_DETECT_MODE_1 0x293 #define ARIZONA_HEADPHONE_DETECT_1 0x29B #define ARIZONA_HEADPHONE_DETECT_2 0x29C +#define ARIZONA_MICD_CLAMP_CONTROL 0x2A2 #define ARIZONA_MIC_DETECT_1 0x2A3 #define ARIZONA_MIC_DETECT_2 0x2A4 #define ARIZONA_MIC_DETECT_3 0x2A5 @@ -2069,6 +2070,13 @@ #define ARIZONA_HP_LVL_SHIFT 0 /* HP_LVL - [6:0] */ #define ARIZONA_HP_LVL_WIDTH 7 /* HP_LVL - [6:0] */ +/* + * R674 (0x2A2) - MICD clamp control + */ +#define ARIZONA_MICD_CLAMP_MODE_MASK 0x000F /* MICD_CLAMP_MODE - [3:0] */ +#define ARIZONA_MICD_CLAMP_MODE_SHIFT 0 /* MICD_CLAMP_MODE - [3:0] */ +#define ARIZONA_MICD_CLAMP_MODE_WIDTH 4 /* MICD_CLAMP_MODE - [3:0] */ + /* * R675 (0x2A3) - Mic Detect 1 */ @@ -5267,6 +5275,12 @@ /* * R3409 (0xD51) - AOD IRQ1 */ +#define ARIZONA_MICD_CLAMP_FALL_EINT1 0x0080 /* MICD_CLAMP_FALL_EINT1 */ +#define ARIZONA_MICD_CLAMP_FALL_EINT1_MASK 0x0080 /* MICD_CLAMP_FALL_EINT1 */ +#define ARIZONA_MICD_CLAMP_FALL_EINT1_SHIFT 7 /* MICD_CLAMP_FALL_EINT1 */ +#define ARIZONA_MICD_CLAMP_RISE_EINT1 0x0040 /* MICD_CLAMP_RISE_EINT1 */ +#define ARIZONA_MICD_CLAMP_RISE_EINT1_MASK 0x0040 /* MICD_CLAMP_RISE_EINT1 */ +#define ARIZONA_MICD_CLAMP_RISE_EINT1_SHIFT 6 /* MICD_CLAMP_RISE_EINT1 */ #define ARIZONA_GP5_FALL_EINT1 0x0020 /* GP5_FALL_EINT1 */ #define ARIZONA_GP5_FALL_EINT1_MASK 0x0020 /* GP5_FALL_EINT1 */ #define ARIZONA_GP5_FALL_EINT1_SHIFT 5 /* GP5_FALL_EINT1 */ @@ -5295,6 +5309,12 @@ /* * R3410 (0xD52) - AOD IRQ2 */ +#define ARIZONA_MICD_CLAMP_FALL_EINT2 0x0080 /* MICD_CLAMP_FALL_EINT2 */ +#define ARIZONA_MICD_CLAMP_FALL_EINT2_MASK 0x0080 /* MICD_CLAMP_FALL_EINT2 */ +#define ARIZONA_MICD_CLAMP_FALL_EINT2_SHIFT 7 /* MICD_CLAMP_FALL_EINT2 */ +#define ARIZONA_MICD_CLAMP_RISE_EINT2 0x0040 /* MICD_CLAMP_RISE_EINT2 */ +#define ARIZONA_MICD_CLAMP_RISE_EINT2_MASK 0x0040 /* MICD_CLAMP_RISE_EINT2 */ +#define ARIZONA_MICD_CLAMP_RISE_EINT2_SHIFT 6 /* MICD_CLAMP_RISE_EINT2 */ #define ARIZONA_GP5_FALL_EINT2 0x0020 /* GP5_FALL_EINT2 */ #define ARIZONA_GP5_FALL_EINT2_MASK 0x0020 /* GP5_FALL_EINT2 */ #define ARIZONA_GP5_FALL_EINT2_SHIFT 5 /* GP5_FALL_EINT2 */ @@ -5379,6 +5399,10 @@ /* * R3413 (0xD55) - AOD IRQ Raw Status */ +#define ARIZONA_MICD_CLAMP_STS 0x0008 /* MICD_CLAMP_STS */ +#define ARIZONA_MICD_CLAMP_STS_MASK 0x0008 /* MICD_CLAMP_STS */ +#define ARIZONA_MICD_CLAMP_STS_SHIFT 3 /* MICD_CLAMP_STS */ +#define ARIZONA_MICD_CLAMP_STS_WIDTH 1 /* MICD_CLAMP_STS */ #define ARIZONA_GP5_STS 0x0004 /* GP5_STS */ #define ARIZONA_GP5_STS_MASK 0x0004 /* GP5_STS */ #define ARIZONA_GP5_STS_SHIFT 2 /* GP5_STS */ @@ -5395,6 +5419,10 @@ /* * R3414 (0xD56) - Jack detect debounce */ +#define ARIZONA_MICD_CLAMP_DB 0x0008 /* MICD_CLAMP_DB */ +#define ARIZONA_MICD_CLAMP_DB_MASK 0x0008 /* MICD_CLAMP_DB */ +#define ARIZONA_MICD_CLAMP_DB_SHIFT 3 /* MICD_CLAMP_DB */ +#define ARIZONA_MICD_CLAMP_DB_WIDTH 1 /* MICD_CLAMP_DB */ #define ARIZONA_JD2_DB 0x0002 /* JD2_DB */ #define ARIZONA_JD2_DB_MASK 0x0002 /* JD2_DB */ #define ARIZONA_JD2_DB_SHIFT 1 /* JD2_DB */ -- cgit v1.2.3 From 92a49871b378b1e523a95da569cd38efdd06eee5 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 11 Jan 2013 08:55:39 +0900 Subject: extcon: arizona: Support use of GPIO5 as an input to jack detection Some system designs provide an input on GPIO5 which in conjunction with the jack detection feature indicates the presence of an accessory. Support such systems, using the microphone clamp feature to minimise wakeups of the processor. Signed-off-by: Mark Brown Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- include/linux/mfd/arizona/pdata.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h index 5b0508853290..0fc26a480be3 100644 --- a/include/linux/mfd/arizona/pdata.h +++ b/include/linux/mfd/arizona/pdata.h @@ -96,6 +96,9 @@ struct arizona_pdata { /** Pin state for GPIO pins */ int gpio_defaults[ARIZONA_MAX_GPIO]; + /** GPIO5 is used for jack detection */ + bool jd_gpio5; + /** GPIO for mic detection polarity */ int micd_pol_gpio; -- cgit v1.2.3 From 4f340333822de79b3439bddccdbf3846f9794e42 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 11 Jan 2013 08:55:43 +0900 Subject: extcon: arizona: Enable basic headphone identification Use the headphone detection to identify if the accessory is a headphone or line load. There are two different revisions of the IP with different register layouts, support both. Signed-off-by: Mark Brown Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- include/linux/mfd/arizona/registers.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/arizona/registers.h b/include/linux/mfd/arizona/registers.h index f3211f06cec6..e9150533e701 100644 --- a/include/linux/mfd/arizona/registers.h +++ b/include/linux/mfd/arizona/registers.h @@ -119,6 +119,7 @@ #define ARIZONA_ACCESSORY_DETECT_MODE_1 0x293 #define ARIZONA_HEADPHONE_DETECT_1 0x29B #define ARIZONA_HEADPHONE_DETECT_2 0x29C +#define ARIZONA_HP_DACVAL 0x29F #define ARIZONA_MICD_CLAMP_CONTROL 0x2A2 #define ARIZONA_MIC_DETECT_1 0x2A3 #define ARIZONA_MIC_DETECT_2 0x2A4 @@ -2036,6 +2037,9 @@ /* * R667 (0x29B) - Headphone Detect 1 */ +#define ARIZONA_HP_IMPEDANCE_RANGE_MASK 0x0600 /* HP_IMPEDANCE_RANGE - [10:9] */ +#define ARIZONA_HP_IMPEDANCE_RANGE_SHIFT 9 /* HP_IMPEDANCE_RANGE - [10:9] */ +#define ARIZONA_HP_IMPEDANCE_RANGE_WIDTH 2 /* HP_IMPEDANCE_RANGE - [10:9] */ #define ARIZONA_HP_STEP_SIZE 0x0100 /* HP_STEP_SIZE */ #define ARIZONA_HP_STEP_SIZE_MASK 0x0100 /* HP_STEP_SIZE */ #define ARIZONA_HP_STEP_SIZE_SHIFT 8 /* HP_STEP_SIZE */ @@ -2070,6 +2074,14 @@ #define ARIZONA_HP_LVL_SHIFT 0 /* HP_LVL - [6:0] */ #define ARIZONA_HP_LVL_WIDTH 7 /* HP_LVL - [6:0] */ +#define ARIZONA_HP_DONE_B 0x8000 /* HP_DONE */ +#define ARIZONA_HP_DONE_B_MASK 0x8000 /* HP_DONE */ +#define ARIZONA_HP_DONE_B_SHIFT 15 /* HP_DONE */ +#define ARIZONA_HP_DONE_B_WIDTH 1 /* HP_DONE */ +#define ARIZONA_HP_LVL_B_MASK 0x7FFF /* HP_LVL - [14:0] */ +#define ARIZONA_HP_LVL_B_SHIFT 0 /* HP_LVL - [14:0] */ +#define ARIZONA_HP_LVL_B_WIDTH 15 /* HP_LVL - [14:0] */ + /* * R674 (0x2A2) - MICD clamp control */ -- cgit v1.2.3 From dd235eea4ed75b1599dd9a53bb618fe5befeb731 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 11 Jan 2013 08:55:51 +0900 Subject: extcon: arizona: Support HPDET based accessory identification The accessory detection functionality in Arizona devices is flexible and supports several system designs in addition to the default one implemented by the existing driver. One such design uses the HPDET feature to determine what kind of accessory is present by comparing measurements taken with the two headphone grounds available on the device, implement that if selected by platform data. Signed-off-by: Mark Brown Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- include/linux/mfd/arizona/pdata.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h index 0fc26a480be3..7c0878778357 100644 --- a/include/linux/mfd/arizona/pdata.h +++ b/include/linux/mfd/arizona/pdata.h @@ -99,6 +99,9 @@ struct arizona_pdata { /** GPIO5 is used for jack detection */ bool jd_gpio5; + /** Use the headphone detect circuit to identify the accessory */ + bool hpdet_acc_id; + /** GPIO for mic detection polarity */ int micd_pol_gpio; -- cgit v1.2.3 From 1eda6aa7ce101b59dfd91abef2c8b0e51e96e199 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 11 Jan 2013 08:55:54 +0900 Subject: extcon: arizona: Support direct microphone measurement via HPDET With some GPIO control it is possible to detect microphones in a wider range of configurations by directly measuring the microphone impedance when the HPDET method cannot distinguish between the behaviour of the two grounds. Allow a GPIO to be provided in platform data and use it to implement this behaviour. Signed-off-by: Mark Brown Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- include/linux/mfd/arizona/pdata.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h index 7c0878778357..bcbe4fda87cb 100644 --- a/include/linux/mfd/arizona/pdata.h +++ b/include/linux/mfd/arizona/pdata.h @@ -102,6 +102,9 @@ struct arizona_pdata { /** Use the headphone detect circuit to identify the accessory */ bool hpdet_acc_id; + /** GPIO used for mic isolation with HPDET */ + int hpdet_id_gpio; + /** GPIO for mic detection polarity */ int micd_pol_gpio; -- cgit v1.2.3 From 689557d3c7045320958d5bc4141088f7b4dff7ba Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 11 Jan 2013 08:55:57 +0900 Subject: mfd: wm5102: Add microphone clamp control registers Signed-off-by: Mark Brown Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- include/linux/mfd/arizona/registers.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/arizona/registers.h b/include/linux/mfd/arizona/registers.h index e9150533e701..79e9dd4073d8 100644 --- a/include/linux/mfd/arizona/registers.h +++ b/include/linux/mfd/arizona/registers.h @@ -1196,6 +1196,14 @@ /* * R64 (0x40) - Wake control */ +#define ARIZONA_WKUP_MICD_CLAMP_FALL 0x0080 /* WKUP_MICD_CLAMP_FALL */ +#define ARIZONA_WKUP_MICD_CLAMP_FALL_MASK 0x0080 /* WKUP_MICD_CLAMP_FALL */ +#define ARIZONA_WKUP_MICD_CLAMP_FALL_SHIFT 7 /* WKUP_MICD_CLAMP_FALL */ +#define ARIZONA_WKUP_MICD_CLAMP_FALL_WIDTH 1 /* WKUP_MICD_CLAMP_FALL */ +#define ARIZONA_WKUP_MICD_CLAMP_RISE 0x0040 /* WKUP_MICD_CLAMP_RISE */ +#define ARIZONA_WKUP_MICD_CLAMP_RISE_MASK 0x0040 /* WKUP_MICD_CLAMP_RISE */ +#define ARIZONA_WKUP_MICD_CLAMP_RISE_SHIFT 6 /* WKUP_MICD_CLAMP_RISE */ +#define ARIZONA_WKUP_MICD_CLAMP_RISE_WIDTH 1 /* WKUP_MICD_CLAMP_RISE */ #define ARIZONA_WKUP_GP5_FALL 0x0020 /* WKUP_GP5_FALL */ #define ARIZONA_WKUP_GP5_FALL_MASK 0x0020 /* WKUP_GP5_FALL */ #define ARIZONA_WKUP_GP5_FALL_SHIFT 5 /* WKUP_GP5_FALL */ -- cgit v1.2.3 From 8aef33a7cf40ca9da188e8578b2abe7267a38c52 Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Tue, 15 Jan 2013 14:18:04 +0100 Subject: cpuidle: remove the power_specified field in the driver We realized that the power usage field is never filled and when it is filled for tegra, the power_specified flag is not set causing all of these values to be reset when the driver is initialized with set_power_state(). However, the power_specified flag can be simply removed under the assumption that the states are always backward sorted, which is the case with the current code. This change allows the menu governor select function and the cpuidle_play_dead() to be simplified. Moreover, the set_power_states() function can removed as it does not make sense any more. Drop the power_specified flag from struct cpuidle_driver and make the related changes as described above. As a consequence, this also fixes the bug where on the dynamic C-states system, the power fields are not initialized. [rjw: Changelog] References: https://bugzilla.kernel.org/show_bug.cgi?id=42870 References: https://bugzilla.kernel.org/show_bug.cgi?id=43349 References: https://lkml.org/lkml/2012/10/16/518 Signed-off-by: Daniel Lezcano Signed-off-by: Rafael J. Wysocki --- include/linux/cpuidle.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 3711b34dc4f9..24cd1037b6d6 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -126,9 +126,9 @@ struct cpuidle_driver { struct module *owner; int refcnt; - unsigned int power_specified:1; /* set to 1 to use the core cpuidle time keeping (for all states). */ unsigned int en_core_tk_irqen:1; + /* states array must be ordered in decreasing power consumption */ struct cpuidle_state states[CPUIDLE_STATE_MAX]; int state_count; int safe_state_index; -- cgit v1.2.3 From 41d16512ebea6938b95c5e4f2ae008914e91abc1 Mon Sep 17 00:00:00 2001 From: Tony Prisk Date: Tue, 15 Jan 2013 19:50:49 +1300 Subject: timer: vt8500: Convert vt8500 to use CLKSRC_OF This patch converts arch-vt8500 to make use of CLKSRC_OF. Doing so removes the need for include/linux/vt8500_timer.h as vt8500_timer_init no longer needs to be visible outside vt8500_timer.c Signed-off-by: Tony Prisk Reviewed-by: Stephen Warren Signed-off-by: Olof Johansson --- include/linux/vt8500_timer.h | 22 ---------------------- 1 file changed, 22 deletions(-) delete mode 100644 include/linux/vt8500_timer.h (limited to 'include/linux') diff --git a/include/linux/vt8500_timer.h b/include/linux/vt8500_timer.h deleted file mode 100644 index 33b0ee87d083..000000000000 --- a/include/linux/vt8500_timer.h +++ /dev/null @@ -1,22 +0,0 @@ -/* - * Copyright 2012 Tony Prisk - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#ifndef __VT8500_TIMER_H -#define __VT8500_TIMER_H - -#include - -void vt8500_timer_init(void); - -#endif -- cgit v1.2.3 From 3988a4df3499e604a3f2ae979372d27fc5664f77 Mon Sep 17 00:00:00 2001 From: Johan Bjornstedt Date: Fri, 11 Jan 2013 13:12:50 +0000 Subject: ab8500_bm: Skip first CCEOC irq for instant current When enabling the CCEOC irq we might get false interrupt from ab8500-driver due to the latched value will be saved and interpreted as an IRQ when enabled Signed-off-by: Lee Jones Signed-off-by: Johan Bjornstedt Signed-off-by: Henrik Solver Reviewed-by: Karl KOMIEROWSKI Signed-off-by: Anton Vorontsov --- include/linux/mfd/abx500/ab8500-bm.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500/ab8500-bm.h b/include/linux/mfd/abx500/ab8500-bm.h index 44310c98ee6e..6c6a02e53cd9 100644 --- a/include/linux/mfd/abx500/ab8500-bm.h +++ b/include/linux/mfd/abx500/ab8500-bm.h @@ -431,11 +431,18 @@ struct ab8500_fg *ab8500_fg_get(void); int ab8500_fg_inst_curr_blocking(struct ab8500_fg *dev); int ab8500_fg_inst_curr_start(struct ab8500_fg *di); int ab8500_fg_inst_curr_finalize(struct ab8500_fg *di, int *res); +int ab8500_fg_inst_curr_started(struct ab8500_fg *di); int ab8500_fg_inst_curr_done(struct ab8500_fg *di); #else +int ab8500_fg_inst_curr_started(struct ab8500_fg *di) +{ + return 0; +} + int ab8500_fg_inst_curr_done(struct ab8500_fg *di) { + return 0; } static void ab8500_fg_reinit(void) { -- cgit v1.2.3 From ea4024017831d61874351defe8f8c58ae73f8009 Mon Sep 17 00:00:00 2001 From: Marcus Cooper Date: Fri, 11 Jan 2013 13:12:54 +0000 Subject: ab8500_bm: Recharge condition not optimal for battery Today the battery recharge is determined with a voltage threshold. This voltage threshold is only valid when the battery is relaxed. In charging algorithm the voltage read is the loaded battery voltage and no compensation is done to get the relaxed voltage. When maintenance charging is not selected, this makes the recharging condition to almost immediately activate when there is a discharge present on the battery. Depending on which vendor the battery comes from this behavior can wear out the battery much faster than normal. The fuelgauge driver is responsible to monitor the actual battery capacity and is able to estimate the remaining capacity. It is better to use the remaining capacity as a limit to determine when battery should be recharged. Signed-off-by: Lee Jones Signed-off-by: Marcus Cooper Reviewed-by: Hakan BERG Reviewed-by: Jonas ABERG Signed-off-by: Anton Vorontsov --- include/linux/mfd/abx500.h | 6 ++++-- include/linux/mfd/abx500/ab8500-bm.h | 2 ++ 2 files changed, 6 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h index 4906b1842d2f..0e6e90badfca 100644 --- a/include/linux/mfd/abx500.h +++ b/include/linux/mfd/abx500.h @@ -131,7 +131,7 @@ struct abx500_maxim_parameters { * @nominal_voltage: Nominal voltage of the battery in mV * @termination_vol: max voltage upto which battery can be charged * @termination_curr battery charging termination current in mA - * @recharge_vol battery voltage limit that will trigger a new + * @recharge_cap battery capacity limit that will trigger a new * full charging cycle in the case where maintenan- * -ce charging has been disabled * @normal_cur_lvl: charger current in normal state in mA @@ -160,7 +160,7 @@ struct abx500_battery_type { int nominal_voltage; int termination_vol; int termination_curr; - int recharge_vol; + int recharge_cap; int normal_cur_lvl; int normal_vol_lvl; int maint_a_cur_lvl; @@ -224,6 +224,7 @@ struct abx500_bm_charger_parameters { * @bkup_bat_v voltage which we charge the backup battery with * @bkup_bat_i current which we charge the backup battery with * @no_maintenance indicates that maintenance charging is disabled + * @capacity_scaling indicates whether capacity scaling is to be used * @abx500_adc_therm placement of thermistor, batctrl or battemp adc * @chg_unknown_bat flag to enable charging of unknown batteries * @enable_overshoot flag to enable VBAT overshoot control @@ -254,6 +255,7 @@ struct abx500_bm_data { int bkup_bat_v; int bkup_bat_i; bool no_maintenance; + bool capacity_scaling; bool chg_unknown_bat; bool enable_overshoot; bool auto_trig; diff --git a/include/linux/mfd/abx500/ab8500-bm.h b/include/linux/mfd/abx500/ab8500-bm.h index 6c6a02e53cd9..fac684a6f346 100644 --- a/include/linux/mfd/abx500/ab8500-bm.h +++ b/include/linux/mfd/abx500/ab8500-bm.h @@ -355,6 +355,7 @@ struct ab8500_bm_charger_parameters { * @bkup_bat_v voltage which we charge the backup battery with * @bkup_bat_i current which we charge the backup battery with * @no_maintenance indicates that maintenance charging is disabled + * @capacity_scaling indicates whether capacity scaling is to be used * @adc_therm placement of thermistor, batctrl or battemp adc * @chg_unknown_bat flag to enable charging of unknown batteries * @enable_overshoot flag to enable VBAT overshoot control @@ -383,6 +384,7 @@ struct ab8500_bm_data { int bkup_bat_v; int bkup_bat_i; bool no_maintenance; + bool capacity_scaling; bool chg_unknown_bat; bool enable_overshoot; enum abx500_adc_therm adc_therm; -- cgit v1.2.3 From d36e3e6d50ccdb5cdef6da0a01dedddd317f23fc Mon Sep 17 00:00:00 2001 From: Hakan Berg Date: Fri, 11 Jan 2013 13:12:57 +0000 Subject: ab8500_btemp: Ignore false btemp low interrupt Ignore the low btemp interrupts for ab8500 3.0 and 3.3 Signed-off-by: Lee Jones Signed-off-by: Hakan Berg Reviewed-by: Jonas ABERG Tested-by: Marcus COOPER Signed-off-by: Anton Vorontsov --- include/linux/mfd/abx500/ab8500.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500/ab8500.h b/include/linux/mfd/abx500/ab8500.h index 1cb5698b4d76..9dd9b99099df 100644 --- a/include/linux/mfd/abx500/ab8500.h +++ b/include/linux/mfd/abx500/ab8500.h @@ -335,6 +335,11 @@ static inline int is_ab8500_2p0_or_earlier(struct ab8500 *ab) return (is_ab8500(ab) && (ab->chip_id <= AB8500_CUT2P0)); } +static inline int is_ab8500_3p3_or_earlier(struct ab8500 *ab) +{ + return (is_ab8500(ab) && (ab->chip_id <= AB8500_CUT3P3)); +} + /* exclude also ab8505, ab9540... */ static inline int is_ab8500_2p0(struct ab8500 *ab) { -- cgit v1.2.3 From 74a8e349b1c882e34419877207ae850ed87dddf7 Mon Sep 17 00:00:00 2001 From: Hakan Berg Date: Fri, 11 Jan 2013 13:12:58 +0000 Subject: ab8500_bm: Adds support for Car/Travel Adapters The Travel and Carkit adapter should be handled directly by the charger driver. Signed-off-by: Lee Jones Signed-off-by: Marcus Cooper Reviewed-by: Jonas ABERG Signed-off-by: Anton Vorontsov --- include/linux/mfd/abx500/ab8500-bm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500/ab8500-bm.h b/include/linux/mfd/abx500/ab8500-bm.h index fac684a6f346..e2a1e6d84f72 100644 --- a/include/linux/mfd/abx500/ab8500-bm.h +++ b/include/linux/mfd/abx500/ab8500-bm.h @@ -23,6 +23,7 @@ * Bank : 0x5 */ #define AB8500_USB_LINE_STAT_REG 0x80 +#define AB8500_USB_LINK1_STAT_REG 0x94 /* * Charger / status register offfsets -- cgit v1.2.3 From 1e817fb62cd185a2232ad4302579491805609489 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Mon, 19 Nov 2012 10:26:16 -0800 Subject: time: create __getnstimeofday for WARNless calls The pstore RAM backend can get called during resume, and must be defensive against a suspended time source. Expose getnstimeofday logic that returns an error instead of a WARN. This can be detected and the timestamp can be zeroed out. Reported-by: Doug Anderson Cc: John Stultz Cc: Anton Vorontsov Signed-off-by: Kees Cook Signed-off-by: John Stultz --- include/linux/time.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/time.h b/include/linux/time.h index 4d358e9d10f1..0015aea4c4a7 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -158,6 +158,7 @@ extern int do_setitimer(int which, struct itimerval *value, struct itimerval *ovalue); extern unsigned int alarm_setitimer(unsigned int seconds); extern int do_getitimer(int which, struct itimerval *value); +extern int __getnstimeofday(struct timespec *tv); extern void getnstimeofday(struct timespec *tv); extern void getrawmonotonic(struct timespec *ts); extern void getnstime_raw_and_real(struct timespec *ts_raw, -- cgit v1.2.3 From 023f333a99cee9b5cd3268ff87298eb01a31f78e Mon Sep 17 00:00:00 2001 From: Jason Gunthorpe Date: Mon, 17 Dec 2012 14:30:53 -0700 Subject: NTP: Add a CONFIG_RTC_SYSTOHC configuration The purpose of this option is to allow ARM/etc systems that rely on the class RTC subsystem to have the same kind of automatic NTP based synchronization that we have on PC platforms. Today ARM does not implement update_persistent_clock and makes extensive use of the class RTC system. When enabled CONFIG_RTC_SYSTOHC will provide a generic rtc_update_persistent_clock that stores the current time in the RTC and is intended complement the existing CONFIG_RTC_HCTOSYS option that loads the RTC at boot. Like with RTC_HCTOSYS the platform's update_persistent_clock is used first, if it works. Platforms with mixed class RTC and non-RTC drivers need to return ENODEV when class RTC should be used. Such an update for PPC is included in this patch. Long term, implementations of update_persistent_clock should migrate to proper class RTC drivers and use CONFIG_RTC_SYSTOHC instead. Tested on ARM kirkwood and PPC405 Signed-off-by: Jason Gunthorpe Signed-off-by: John Stultz --- include/linux/rtc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/rtc.h b/include/linux/rtc.h index 9531845c419f..11d05f9fe8b6 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -138,6 +138,7 @@ extern void rtc_device_unregister(struct rtc_device *rtc); extern int rtc_read_time(struct rtc_device *rtc, struct rtc_time *tm); extern int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm); extern int rtc_set_mmss(struct rtc_device *rtc, unsigned long secs); +extern int rtc_set_ntp_time(struct timespec now); int __rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm); extern int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alrm); -- cgit v1.2.3 From 31ade30692dc9680bfc95700d794818fa3f754ac Mon Sep 17 00:00:00 2001 From: Feng Tang Date: Wed, 16 Jan 2013 00:09:47 +0800 Subject: timekeeping: Add persistent_clock_exist flag In current kernel, there are several places which need to check whether there is a persistent clock for the platform. Current check is done by calling the read_persistent_clock() and validating its return value. So one optimization is to do the check only once in timekeeping_init(), and use a flag persistent_clock_exist to record it. v2: Add a has_persistent_clock() helper function, as suggested by John. Cc: Thomas Gleixner Cc: John Stultz Signed-off-by: Feng Tang Signed-off-by: John Stultz --- include/linux/time.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/time.h b/include/linux/time.h index 0015aea4c4a7..dfbc4e82e8ba 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -115,6 +115,12 @@ static inline bool timespec_valid_strict(const struct timespec *ts) return true; } +extern bool persistent_clock_exist; +static inline bool has_persistent_clock(void) +{ + return persistent_clock_exist; +} + extern void read_persistent_clock(struct timespec *ts); extern void read_boot_clock(struct timespec *ts); extern int update_persistent_clock(struct timespec now); -- cgit v1.2.3 From 05ad717c77b1b8e98a1dd768c3700036d634629e Mon Sep 17 00:00:00 2001 From: Feng Tang Date: Wed, 16 Jan 2013 00:09:49 +0800 Subject: timekeeping: Add CONFIG_HAS_PERSISTENT_CLOCK option Make the persistent clock check a kernel config option, so that some platform can explicitely select it, also make CONFIG_RTC_HCTOSYS and RTC_SYSTOHC depend on its non-existence, which could prevent the persistent clock and RTC code from doing similar thing twice during system's init/suspend/resume phases. If the CONFIG_HAS_PERSISTENT_CLOCK=n, then no change happens for kernel which still does the persistent clock check in timekeeping_init(). Cc: Thomas Gleixner Suggested-by: John Stultz Signed-off-by: Feng Tang [jstultz: Added dependency for RTC_SYSTOHC as well] Signed-off-by: John Stultz --- include/linux/time.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/time.h b/include/linux/time.h index dfbc4e82e8ba..369b6e3b87d8 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -116,10 +116,15 @@ static inline bool timespec_valid_strict(const struct timespec *ts) } extern bool persistent_clock_exist; + +#ifdef CONFIG_HAS_PERSISTENT_CLOCK +#define has_persistent_clock() true +#else static inline bool has_persistent_clock(void) { return persistent_clock_exist; } +#endif extern void read_persistent_clock(struct timespec *ts); extern void read_boot_clock(struct timespec *ts); -- cgit v1.2.3 From 8ab3e6a08a98f7ff18c6814065eb30ba2e000233 Mon Sep 17 00:00:00 2001 From: Eduardo Valentin Date: Wed, 2 Jan 2013 15:29:39 +0000 Subject: thermal: Use thermal zone device id in netlink messages This patch changes the function thermal_generate_netlink_event to receive a thermal zone device instead of a originator id. This way, the messages will always be bound to a thermal zone. Signed-off-by: Eduardo Valentin Reviewed-by: Durgadoss R Signed-off-by: Zhang Rui --- include/linux/thermal.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 883bcda7e1e4..9b78f8c6f773 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -246,9 +246,11 @@ int thermal_register_governor(struct thermal_governor *); void thermal_unregister_governor(struct thermal_governor *); #ifdef CONFIG_NET -extern int thermal_generate_netlink_event(u32 orig, enum events event); +extern int thermal_generate_netlink_event(struct thermal_zone_device *tz, + enum events event); #else -static inline int thermal_generate_netlink_event(u32 orig, enum events event) +static int thermal_generate_netlink_event(struct thermal_zone_device *tz, + enum events event) { return 0; } -- cgit v1.2.3 From 55c7c0fdc5aae43ca7eda3adb22ab782634fcb24 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Thu, 29 Nov 2012 09:03:00 +1030 Subject: serial: quatech: add the other serial identifiers and preliminary control code Jonathan Woithe posted an out of tree enabler/control module for these cards. Lift the relevant identifiers and put them in the 8250_pci driver along with code used to control custom registers on these cards. Signed-off-by: Alan Cox Signed-off-by: Jonathan Woithe Signed-off-by: Greg Kroah-Hartman --- include/linux/pci_ids.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 0eb65796bcb9..19e8d7a42b34 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -1868,8 +1868,23 @@ #define PCI_VENDOR_ID_QUATECH 0x135C #define PCI_DEVICE_ID_QUATECH_QSC100 0x0010 #define PCI_DEVICE_ID_QUATECH_DSC100 0x0020 +#define PCI_DEVICE_ID_QUATECH_DSC200 0x0030 +#define PCI_DEVICE_ID_QUATECH_QSC200 0x0040 #define PCI_DEVICE_ID_QUATECH_ESC100D 0x0050 #define PCI_DEVICE_ID_QUATECH_ESC100M 0x0060 +#define PCI_DEVICE_ID_QUATECH_QSCP100 0x0120 +#define PCI_DEVICE_ID_QUATECH_DSCP100 0x0130 +#define PCI_DEVICE_ID_QUATECH_QSCP200 0x0140 +#define PCI_DEVICE_ID_QUATECH_DSCP200 0x0150 +#define PCI_DEVICE_ID_QUATECH_QSCLP100 0x0170 +#define PCI_DEVICE_ID_QUATECH_DSCLP100 0x0180 +#define PCI_DEVICE_ID_QUATECH_DSC100E 0x0181 +#define PCI_DEVICE_ID_QUATECH_SSCLP100 0x0190 +#define PCI_DEVICE_ID_QUATECH_QSCLP200 0x01A0 +#define PCI_DEVICE_ID_QUATECH_DSCLP200 0x01B0 +#define PCI_DEVICE_ID_QUATECH_DSC200E 0x01B1 +#define PCI_DEVICE_ID_QUATECH_SSCLP200 0x01C0 +#define PCI_DEVICE_ID_QUATECH_ESCLP100 0x01E0 #define PCI_DEVICE_ID_QUATECH_SPPXP_100 0x0278 #define PCI_VENDOR_ID_SEALEVEL 0x135e -- cgit v1.2.3 From 6f538fe31c1d453b7e7fc4f6e7c6a9bdead4a6f2 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 7 Dec 2012 11:36:08 +0100 Subject: tty: serial core: decouple pm states from ACPI The serial core is using power states lifted from ACPI for no good reason. Remove this reference from the documentation and alter all users to use an enum specific to the serial core instead, and define it in . Signed-off-by: Linus Walleij Acked-by: Alan Cox Reviewed-by: Daniel Lezcano Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_core.h | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index c6690a2a27fb..a116daa13113 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -208,13 +208,25 @@ static inline void serial_port_out(struct uart_port *up, int offset, int value) up->serial_out(up, offset, value); } +/** + * enum uart_pm_state - power states for UARTs + * @UART_PM_STATE_ON: UART is powered, up and operational + * @UART_PM_STATE_OFF: UART is powered off + * @UART_PM_STATE_UNDEFINED: sentinel + */ +enum uart_pm_state { + UART_PM_STATE_ON = 0, + UART_PM_STATE_OFF = 3, /* number taken from ACPI */ + UART_PM_STATE_UNDEFINED, +}; + /* * This is the state information which is persistent across opens. */ struct uart_state { struct tty_port port; - int pm_state; + enum uart_pm_state pm_state; struct circ_buf xmit; struct uart_port *uart_port; -- cgit v1.2.3 From a205a56dc24811a2879572e52c902a38425a4473 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Tue, 18 Dec 2012 11:41:14 +0100 Subject: serial: Remove RM9000 series serial driver. Now that support for RM9000 and platforms based on it has been removed, remove the serial driver for it as well. It's really only been a quirk for an almost 8250 compatible UART anyway. Signed-off-by: Ralf Baechle drivers/tty/serial/8250/8250.c | 70 +---------------------------------------- drivers/tty/serial/8250/Kconfig | 9 ------ include/linux/serial_core.h | 1 - 3 files changed, 1 insertion(+), 79 deletions(-) Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_core.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index a116daa13113..ec5df74c4506 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -136,7 +136,6 @@ struct uart_port { #define UPIO_MEM32 (3) #define UPIO_AU (4) /* Au1x00 type IO */ #define UPIO_TSI (5) /* Tsi108/109 type IO */ -#define UPIO_RM9000 (6) /* RM9000 type IO */ unsigned int read_status_mask; /* driver specific */ unsigned int ignore_status_mask; /* driver specific */ -- cgit v1.2.3 From e759d7c53b39a43fc908425bf9985b8b7d930550 Mon Sep 17 00:00:00 2001 From: Kevin Cernekee Date: Wed, 26 Dec 2012 20:43:42 -0800 Subject: tty: Update serial core API documentation Signed-off-by: Kevin Cernekee Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_core.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index ec5df74c4506..82aebc8ff77f 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -37,8 +37,8 @@ struct serial_struct; struct device; /* - * This structure describes all the operations that can be - * done on the physical hardware. + * This structure describes all the operations that can be done on the + * physical hardware. See Documentation/serial/driver for details. */ struct uart_ops { unsigned int (*tx_empty)(struct uart_port *); @@ -65,7 +65,7 @@ struct uart_ops { /* * Return a string describing the type of the port */ - const char *(*type)(struct uart_port *); + const char *(*type)(struct uart_port *); /* * Release IO and memory resources used by the port. @@ -83,7 +83,7 @@ struct uart_ops { int (*ioctl)(struct uart_port *, unsigned int, unsigned long); #ifdef CONFIG_CONSOLE_POLL int (*poll_init)(struct uart_port *); - void (*poll_put_char)(struct uart_port *, unsigned char); + void (*poll_put_char)(struct uart_port *, unsigned char); int (*poll_get_char)(struct uart_port *); #endif }; -- cgit v1.2.3 From 227434f8986c3827a1faedd1feb437acd6285315 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 3 Jan 2013 15:53:01 +0100 Subject: TTY: switch tty_buffer_request_room to tty_port Now, we start converting tty buffer functions to actually use tty_port. This will allow us to get rid of the need of tty pointer in many call sites. Only tty_port will be needed and hence no more tty_port_tty_get calls in those paths. Here we start with tty_buffer_request_room. Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- include/linux/tty_flip.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/tty_flip.h b/include/linux/tty_flip.h index 2002344ed36a..78207ca8fab1 100644 --- a/include/linux/tty_flip.h +++ b/include/linux/tty_flip.h @@ -1,7 +1,7 @@ #ifndef _LINUX_TTY_FLIP_H #define _LINUX_TTY_FLIP_H -extern int tty_buffer_request_room(struct tty_struct *tty, size_t size); +extern int tty_buffer_request_room(struct tty_port *port, size_t size); extern int tty_insert_flip_string_flags(struct tty_struct *tty, const unsigned char *chars, const char *flags, size_t size); extern int tty_insert_flip_string_fixed_flag(struct tty_struct *tty, const unsigned char *chars, char flag, size_t size); extern int tty_prepare_flip_string(struct tty_struct *tty, unsigned char **chars, size_t size); -- cgit v1.2.3 From 2f69335710884ae6112fc8196ebe29b5cda7b79b Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 3 Jan 2013 15:53:02 +0100 Subject: TTY: convert more flipping functions Now, we start converting tty buffer functions to actually use tty_port. This will allow us to get rid of the need of tty pointer in many call sites. Only tty_port will be needed and hence no more tty_port_tty_get calls in those paths. Now 4 string flipping ones are on turn: * tty_insert_flip_string_flags * tty_insert_flip_string_fixed_flag * tty_prepare_flip_string * tty_prepare_flip_string_flags Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- include/linux/tty_flip.h | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tty_flip.h b/include/linux/tty_flip.h index 78207ca8fab1..743f1d076467 100644 --- a/include/linux/tty_flip.h +++ b/include/linux/tty_flip.h @@ -2,10 +2,14 @@ #define _LINUX_TTY_FLIP_H extern int tty_buffer_request_room(struct tty_port *port, size_t size); -extern int tty_insert_flip_string_flags(struct tty_struct *tty, const unsigned char *chars, const char *flags, size_t size); -extern int tty_insert_flip_string_fixed_flag(struct tty_struct *tty, const unsigned char *chars, char flag, size_t size); -extern int tty_prepare_flip_string(struct tty_struct *tty, unsigned char **chars, size_t size); -extern int tty_prepare_flip_string_flags(struct tty_struct *tty, unsigned char **chars, char **flags, size_t size); +extern int tty_insert_flip_string_flags(struct tty_port *port, + const unsigned char *chars, const char *flags, size_t size); +extern int tty_insert_flip_string_fixed_flag(struct tty_port *port, + const unsigned char *chars, char flag, size_t size); +extern int tty_prepare_flip_string(struct tty_port *port, + unsigned char **chars, size_t size); +extern int tty_prepare_flip_string_flags(struct tty_port *port, + unsigned char **chars, char **flags, size_t size); void tty_schedule_flip(struct tty_struct *tty); static inline int tty_insert_flip_char(struct tty_struct *tty, @@ -17,12 +21,12 @@ static inline int tty_insert_flip_char(struct tty_struct *tty, tb->char_buf_ptr[tb->used++] = ch; return 1; } - return tty_insert_flip_string_flags(tty, &ch, &flag, 1); + return tty_insert_flip_string_flags(tty->port, &ch, &flag, 1); } static inline int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, size_t size) { - return tty_insert_flip_string_fixed_flag(tty, chars, TTY_NORMAL, size); + return tty_insert_flip_string_fixed_flag(tty->port, chars, TTY_NORMAL, size); } #endif /* _LINUX_TTY_FLIP_H */ -- cgit v1.2.3 From 92a19f9cec9a80ad93c06e115822deb729e2c6ad Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 3 Jan 2013 15:53:03 +0100 Subject: TTY: switch tty_insert_flip_char Now, we start converting tty buffer functions to actually use tty_port. This will allow us to get rid of the need of tty in many call sites. Only tty_port will needed and hence no more tty_port_tty_get in those paths. tty_insert_flip_char is the next one to proceed. This one is used all over the code, so the patch is huge. Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- include/linux/tty_flip.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tty_flip.h b/include/linux/tty_flip.h index 743f1d076467..f9acb578c6ad 100644 --- a/include/linux/tty_flip.h +++ b/include/linux/tty_flip.h @@ -12,16 +12,16 @@ extern int tty_prepare_flip_string_flags(struct tty_port *port, unsigned char **chars, char **flags, size_t size); void tty_schedule_flip(struct tty_struct *tty); -static inline int tty_insert_flip_char(struct tty_struct *tty, +static inline int tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag) { - struct tty_buffer *tb = tty->port->buf.tail; + struct tty_buffer *tb = port->buf.tail; if (tb && tb->used < tb->size) { tb->flag_buf_ptr[tb->used] = flag; tb->char_buf_ptr[tb->used++] = ch; return 1; } - return tty_insert_flip_string_flags(tty->port, &ch, &flag, 1); + return tty_insert_flip_string_flags(port, &ch, &flag, 1); } static inline int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, size_t size) -- cgit v1.2.3 From 05c7cd39907184328f48d3e7899f9cdd653ad336 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 3 Jan 2013 15:53:04 +0100 Subject: TTY: switch tty_insert_flip_string Now, we start converting tty buffer functions to actually use tty_port. This will allow us to get rid of the need of tty in many call sites. Only tty_port will needed and hence no more tty_port_tty_get in those paths. tty_insert_flip_string this time. Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- include/linux/tty_flip.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tty_flip.h b/include/linux/tty_flip.h index f9acb578c6ad..5cb694aba322 100644 --- a/include/linux/tty_flip.h +++ b/include/linux/tty_flip.h @@ -24,9 +24,10 @@ static inline int tty_insert_flip_char(struct tty_port *port, return tty_insert_flip_string_flags(port, &ch, &flag, 1); } -static inline int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, size_t size) +static inline int tty_insert_flip_string(struct tty_port *port, + const unsigned char *chars, size_t size) { - return tty_insert_flip_string_fixed_flag(tty->port, chars, TTY_NORMAL, size); + return tty_insert_flip_string_fixed_flag(port, chars, TTY_NORMAL, size); } #endif /* _LINUX_TTY_FLIP_H */ -- cgit v1.2.3 From d6c53c0e9bd0a83f9f9ddbc9fd80141a54d83896 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 3 Jan 2013 15:53:05 +0100 Subject: TTY: move low_latency to tty_port One point is to have less places where we actually need tty pointer. The other is that low_latency is bound to buffer processing and buffers are now in tty_port. So it makes sense to move low_latency to tty_port too. Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index 8db1b569c37a..f16a47a13a09 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -202,7 +202,8 @@ struct tty_port { unsigned long iflags; /* TTYP_ internal flags */ #define TTYP_FLUSHING 1 /* Flushing to ldisc in progress */ #define TTYP_FLUSHPENDING 2 /* Queued buffer flush pending */ - unsigned char console:1; /* port is a console */ + unsigned char console:1, /* port is a console */ + low_latency:1; /* direct buffer flush */ struct mutex mutex; /* Locking */ struct mutex buf_mutex; /* Buffer alloc lock */ unsigned char *xmit_buf; /* Optional buffer */ @@ -254,7 +255,7 @@ struct tty_struct { int count; struct winsize winsize; /* termios mutex */ unsigned char stopped:1, hw_stopped:1, flow_stopped:1, packet:1; - unsigned char low_latency:1, warned:1; + unsigned char warned:1; unsigned char ctrl_status; /* ctrl_lock */ unsigned int receive_room; /* Bytes free for queue */ -- cgit v1.2.3 From 2e124b4a390ca85325fae75764bef92f0547fa25 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 3 Jan 2013 15:53:06 +0100 Subject: TTY: switch tty_flip_buffer_push Now, we start converting tty buffer functions to actually use tty_port. This will allow us to get rid of the need of tty in many call sites. Only tty_port will needed and hence no more tty_port_tty_get in those paths. Now, the one where most of tty_port_tty_get gets removed: tty_flip_buffer_push. IOW we also closed all the races in drivers not using tty_port_tty_get at all yet. Also we move tty_flip_buffer_push declaration from include/linux/tty.h to include/linux/tty_flip.h to all others while we are changing it anyway. Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- include/linux/tty.h | 1 - include/linux/tty_flip.h | 1 + 2 files changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index f16a47a13a09..f89acd1ed6d3 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -387,7 +387,6 @@ extern void do_SAK(struct tty_struct *tty); extern void __do_SAK(struct tty_struct *tty); extern void disassociate_ctty(int priv); extern void no_tty(void); -extern void tty_flip_buffer_push(struct tty_struct *tty); extern void tty_flush_to_ldisc(struct tty_struct *tty); extern void tty_buffer_free_all(struct tty_port *port); extern void tty_buffer_flush(struct tty_struct *tty); diff --git a/include/linux/tty_flip.h b/include/linux/tty_flip.h index 5cb694aba322..c5572807633a 100644 --- a/include/linux/tty_flip.h +++ b/include/linux/tty_flip.h @@ -10,6 +10,7 @@ extern int tty_prepare_flip_string(struct tty_port *port, unsigned char **chars, size_t size); extern int tty_prepare_flip_string_flags(struct tty_port *port, unsigned char **chars, char **flags, size_t size); +extern void tty_flip_buffer_push(struct tty_port *port); void tty_schedule_flip(struct tty_struct *tty); static inline int tty_insert_flip_char(struct tty_port *port, -- cgit v1.2.3 From 6732c8bb8671acbdac6cdc93dd72ddd581dd5e25 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 3 Jan 2013 15:53:07 +0100 Subject: TTY: switch tty_schedule_flip Now, we start converting tty buffer functions to actually use tty_port. This will allow us to get rid of the need of tty in many call sites. Only tty_port will needed and hence no more tty_port_tty_get in those paths. This is the last one: tty_schedule_flip Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- include/linux/tty_flip.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/tty_flip.h b/include/linux/tty_flip.h index c5572807633a..e0f252633b47 100644 --- a/include/linux/tty_flip.h +++ b/include/linux/tty_flip.h @@ -11,7 +11,7 @@ extern int tty_prepare_flip_string(struct tty_port *port, extern int tty_prepare_flip_string_flags(struct tty_port *port, unsigned char **chars, char **flags, size_t size); extern void tty_flip_buffer_push(struct tty_port *port); -void tty_schedule_flip(struct tty_struct *tty); +void tty_schedule_flip(struct tty_port *port); static inline int tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag) -- cgit v1.2.3 From ec063899b7b308019afa9f5eb32f0a58a6c6ee53 Mon Sep 17 00:00:00 2001 From: Alexander Shiyan Date: Mon, 3 Dec 2012 22:23:31 +0400 Subject: serial: sccnxp: Implement polling mode This patch adds support for polling work mode, i.e. system is perform periodical check chip status when IRQ-line is not connected to CPU. Signed-off-by: Alexander Shiyan Signed-off-by: Greg Kroah-Hartman --- include/linux/platform_data/sccnxp.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/sccnxp.h b/include/linux/platform_data/sccnxp.h index 7311ccd3217f..096de90cf848 100644 --- a/include/linux/platform_data/sccnxp.h +++ b/include/linux/platform_data/sccnxp.h @@ -84,6 +84,8 @@ struct sccnxp_pdata { const u8 reg_shift; /* Modem control lines configuration */ const u32 mctrl_cfg[SCCNXP_MAX_UARTS]; + /* Timer value for polling mode (usecs) */ + const unsigned int poll_time_us; /* Called during startup */ void (*init)(void); /* Called before finish */ -- cgit v1.2.3 From 463dcc42e4832150eb3de804682b924f9b73a91a Mon Sep 17 00:00:00 2001 From: Alexander Shiyan Date: Mon, 3 Dec 2012 22:23:32 +0400 Subject: serial: sccnxp: Rename header file to match functionality Signed-off-by: Alexander Shiyan Signed-off-by: Greg Kroah-Hartman --- include/linux/platform_data/sccnxp.h | 95 ----------------------------- include/linux/platform_data/serial-sccnxp.h | 95 +++++++++++++++++++++++++++++ 2 files changed, 95 insertions(+), 95 deletions(-) delete mode 100644 include/linux/platform_data/sccnxp.h create mode 100644 include/linux/platform_data/serial-sccnxp.h (limited to 'include/linux') diff --git a/include/linux/platform_data/sccnxp.h b/include/linux/platform_data/sccnxp.h deleted file mode 100644 index 096de90cf848..000000000000 --- a/include/linux/platform_data/sccnxp.h +++ /dev/null @@ -1,95 +0,0 @@ -/* - * NXP (Philips) SCC+++(SCN+++) serial driver - * - * Copyright (C) 2012 Alexander Shiyan - * - * Based on sc26xx.c, by Thomas Bogendörfer (tsbogend@alpha.franken.de) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#ifndef __SCCNXP_H -#define __SCCNXP_H - -#define SCCNXP_MAX_UARTS 2 - -/* Output lines */ -#define LINE_OP0 1 -#define LINE_OP1 2 -#define LINE_OP2 3 -#define LINE_OP3 4 -#define LINE_OP4 5 -#define LINE_OP5 6 -#define LINE_OP6 7 -#define LINE_OP7 8 - -/* Input lines */ -#define LINE_IP0 9 -#define LINE_IP1 10 -#define LINE_IP2 11 -#define LINE_IP3 12 -#define LINE_IP4 13 -#define LINE_IP5 14 -#define LINE_IP6 15 - -/* Signals */ -#define DTR_OP 0 /* DTR */ -#define RTS_OP 4 /* RTS */ -#define DSR_IP 8 /* DSR */ -#define CTS_IP 12 /* CTS */ -#define DCD_IP 16 /* DCD */ -#define RNG_IP 20 /* RNG */ - -#define DIR_OP 24 /* Special signal for control RS-485. - * Goes high when transmit, - * then goes low. - */ - -/* Routing control signal 'sig' to line 'line' */ -#define MCTRL_SIG(sig, line) ((line) << (sig)) - -/* - * Example board initialization data: - * - * static struct resource sc2892_resources[] = { - * DEFINE_RES_MEM(UART_PHYS_START, 0x10), - * DEFINE_RES_IRQ(IRQ_EXT2), - * }; - * - * static struct sccnxp_pdata sc2892_info = { - * .frequency = 3686400, - * .mctrl_cfg[0] = MCTRL_SIG(DIR_OP, LINE_OP0), - * .mctrl_cfg[1] = MCTRL_SIG(DIR_OP, LINE_OP1), - * }; - * - * static struct platform_device sc2892 = { - * .name = "sc2892", - * .id = -1, - * .resource = sc2892_resources, - * .num_resources = ARRAY_SIZE(sc2892_resources), - * .dev = { - * .platform_data = &sc2892_info, - * }, - * }; - */ - -/* SCCNXP platform data structure */ -struct sccnxp_pdata { - /* Frequency (extrenal clock or crystal) */ - int frequency; - /* Shift for A0 line */ - const u8 reg_shift; - /* Modem control lines configuration */ - const u32 mctrl_cfg[SCCNXP_MAX_UARTS]; - /* Timer value for polling mode (usecs) */ - const unsigned int poll_time_us; - /* Called during startup */ - void (*init)(void); - /* Called before finish */ - void (*exit)(void); -}; - -#endif diff --git a/include/linux/platform_data/serial-sccnxp.h b/include/linux/platform_data/serial-sccnxp.h new file mode 100644 index 000000000000..215574d1e81d --- /dev/null +++ b/include/linux/platform_data/serial-sccnxp.h @@ -0,0 +1,95 @@ +/* + * NXP (Philips) SCC+++(SCN+++) serial driver + * + * Copyright (C) 2012 Alexander Shiyan + * + * Based on sc26xx.c, by Thomas Bogendörfer (tsbogend@alpha.franken.de) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef _PLATFORM_DATA_SERIAL_SCCNXP_H_ +#define _PLATFORM_DATA_SERIAL_SCCNXP_H_ + +#define SCCNXP_MAX_UARTS 2 + +/* Output lines */ +#define LINE_OP0 1 +#define LINE_OP1 2 +#define LINE_OP2 3 +#define LINE_OP3 4 +#define LINE_OP4 5 +#define LINE_OP5 6 +#define LINE_OP6 7 +#define LINE_OP7 8 + +/* Input lines */ +#define LINE_IP0 9 +#define LINE_IP1 10 +#define LINE_IP2 11 +#define LINE_IP3 12 +#define LINE_IP4 13 +#define LINE_IP5 14 +#define LINE_IP6 15 + +/* Signals */ +#define DTR_OP 0 /* DTR */ +#define RTS_OP 4 /* RTS */ +#define DSR_IP 8 /* DSR */ +#define CTS_IP 12 /* CTS */ +#define DCD_IP 16 /* DCD */ +#define RNG_IP 20 /* RNG */ + +#define DIR_OP 24 /* Special signal for control RS-485. + * Goes high when transmit, + * then goes low. + */ + +/* Routing control signal 'sig' to line 'line' */ +#define MCTRL_SIG(sig, line) ((line) << (sig)) + +/* + * Example board initialization data: + * + * static struct resource sc2892_resources[] = { + * DEFINE_RES_MEM(UART_PHYS_START, 0x10), + * DEFINE_RES_IRQ(IRQ_EXT2), + * }; + * + * static struct sccnxp_pdata sc2892_info = { + * .frequency = 3686400, + * .mctrl_cfg[0] = MCTRL_SIG(DIR_OP, LINE_OP0), + * .mctrl_cfg[1] = MCTRL_SIG(DIR_OP, LINE_OP1), + * }; + * + * static struct platform_device sc2892 = { + * .name = "sc2892", + * .id = -1, + * .resource = sc2892_resources, + * .num_resources = ARRAY_SIZE(sc2892_resources), + * .dev = { + * .platform_data = &sc2892_info, + * }, + * }; + */ + +/* SCCNXP platform data structure */ +struct sccnxp_pdata { + /* Frequency (extrenal clock or crystal) */ + int frequency; + /* Shift for A0 line */ + const u8 reg_shift; + /* Modem control lines configuration */ + const u32 mctrl_cfg[SCCNXP_MAX_UARTS]; + /* Timer value for polling mode (usecs) */ + const unsigned int poll_time_us; + /* Called during startup */ + void (*init)(void); + /* Called before finish */ + void (*exit)(void); +}; + +#endif -- cgit v1.2.3 From 9ee4b83e51f741a645c43e61b9f3f8075ca0fdf4 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Thu, 10 Jan 2013 11:25:11 +0200 Subject: serial: 8250: Add support for dmaengine Add support for dmaengine API. The drivers can implement the struct uart_8250_dma member in struct uart_8250_port and 8250.c can take care of the rest. Signed-off-by: Heikki Krogerus Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_8250.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h index c490d20b3fb8..af47a8af6024 100644 --- a/include/linux/serial_8250.h +++ b/include/linux/serial_8250.h @@ -59,6 +59,8 @@ enum { PLAT8250_DEV_SM501, }; +struct uart_8250_dma; + /* * This should be used by drivers which want to register * their own 8250 ports without registering their own @@ -91,6 +93,8 @@ struct uart_8250_port { #define MSR_SAVE_FLAGS UART_MSR_ANY_DELTA unsigned char msr_saved_flags; + struct uart_8250_dma *dma; + /* 8250 specific callbacks */ int (*dl_read)(struct uart_8250_port *); void (*dl_write)(struct uart_8250_port *, int); -- cgit v1.2.3 From 774a1221e862b343388347bac9b318767336b20b Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 15 Jan 2013 18:52:51 -0800 Subject: module, async: async_synchronize_full() on module init iff async is used If the default iosched is built as module, the kernel may deadlock while trying to load the iosched module on device probe if the probing was running off async. This is because async_synchronize_full() at the end of module init ends up waiting for the async job which initiated the module loading. async A modprobe 1. finds a device 2. registers the block device 3. request_module(default iosched) 4. modprobe in userland 5. load and init module 6. async_synchronize_full() Async A waits for modprobe to finish in request_module() and modprobe waits for async A to finish in async_synchronize_full(). Because there's no easy to track dependency once control goes out to userland, implementing properly nested flushing is difficult. For now, make module init perform async_synchronize_full() iff module init has queued async jobs as suggested by Linus. This avoids the described deadlock because iosched module doesn't use async and thus wouldn't invoke async_synchronize_full(). This is hacky and incomplete. It will deadlock if async module loading nests; however, this works around the known problem case and seems to be the best of bad options. For more details, please refer to the following thread. http://thread.gmane.org/gmane.linux.kernel/1420814 Signed-off-by: Tejun Heo Reported-by: Alex Riesen Tested-by: Ming Lei Tested-by: Alex Riesen Cc: Arjan van de Ven Cc: Jens Axboe Signed-off-by: Linus Torvalds --- include/linux/sched.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 206bb089c06b..6fc8f45de4e9 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1810,6 +1810,7 @@ extern void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut, #define PF_MEMALLOC 0x00000800 /* Allocating memory */ #define PF_NPROC_EXCEEDED 0x00001000 /* set_user noticed that RLIMIT_NPROC was exceeded */ #define PF_USED_MATH 0x00002000 /* if unset the fpu must be initialized before use */ +#define PF_USED_ASYNC 0x00004000 /* used async_schedule*(), used by module init */ #define PF_NOFREEZE 0x00008000 /* this thread should not be frozen */ #define PF_FROZEN 0x00010000 /* frozen for system suspend */ #define PF_FSTRANS 0x00020000 /* inside a filesystem transaction */ -- cgit v1.2.3 From e65b9ad222c280c031bc8d3642cc38dd3026fe06 Mon Sep 17 00:00:00 2001 From: Jiri Kosina Date: Tue, 15 Jan 2013 20:12:37 +0100 Subject: lockdep, rwsem: fix down_write_nest_lock() if !CONFIG_DEBUG_LOCK_ALLOC Commit 1b963c81b145 ("lockdep, rwsem: provide down_write_nest_lock()") contains a bug in a codepath when CONFIG_DEBUG_LOCK_ALLOC is disabled, which causes down_read() to be called instead of down_write() by mistake on such configurations. Fix that. Reported-and-tested-by: Andrew Clayton Reported-and-tested-by: Zlatko Calusic Signed-off-by: Jiri Kosina Reviewed-by: Rik van Riel Signed-off-by: Linus Torvalds --- include/linux/rwsem.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h index 413cc11e414a..8da67d625e13 100644 --- a/include/linux/rwsem.h +++ b/include/linux/rwsem.h @@ -135,7 +135,7 @@ do { \ #else # define down_read_nested(sem, subclass) down_read(sem) -# define down_write_nest_lock(sem, nest_lock) down_read(sem) +# define down_write_nest_lock(sem, nest_lock) down_write(sem) # define down_write_nested(sem, subclass) down_write(sem) #endif -- cgit v1.2.3 From 6e8575faa8fa680d59404a4d58d12190667be815 Mon Sep 17 00:00:00 2001 From: Sam Lang Date: Fri, 28 Dec 2012 09:56:46 -0800 Subject: ceph: Check for created flag in response from mds The mds now sends back a created inode if the create request performed the create. If the file already existed, no inode is returned in the reply. This allows ceph to set the created flag in atomic_open so that permissions are properly checked in the case that the file wasn't created by the create call to the mds. To ensure compability with previous kernels, a feature for sending back the inode in the create reply was added, so that the mds will only send back the inode if the client indicates it supports the feature. Signed-off-by: Sam Lang Reviewed-by: Sage Weil --- include/linux/ceph/ceph_features.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ceph/ceph_features.h b/include/linux/ceph/ceph_features.h index dad579b0c0e6..6b7c6acbb3bf 100644 --- a/include/linux/ceph/ceph_features.h +++ b/include/linux/ceph/ceph_features.h @@ -14,13 +14,16 @@ #define CEPH_FEATURE_DIRLAYOUTHASH (1<<7) /* bits 8-17 defined by user-space; not supported yet here */ #define CEPH_FEATURE_CRUSH_TUNABLES (1<<18) +/* bits 19-25 defined by user-space; not supported yet here */ +#define CEPH_FEATURE_REPLY_CREATE_INODE (1<<27) /* * Features supported. */ #define CEPH_FEATURES_SUPPORTED_DEFAULT \ (CEPH_FEATURE_NOSRCADDR | \ - CEPH_FEATURE_CRUSH_TUNABLES) + CEPH_FEATURE_CRUSH_TUNABLES | \ + CEPH_FEATURE_REPLY_CREATE_INODE) #define CEPH_FEATURES_REQUIRED_DEFAULT \ (CEPH_FEATURE_NOSRCADDR) -- cgit v1.2.3 From 1604f488ac2dcce33c8218e75a000e8c5fb57e61 Mon Sep 17 00:00:00 2001 From: Jim Schutt Date: Fri, 30 Nov 2012 09:15:25 -0700 Subject: libceph: for chooseleaf rules, retry CRUSH map descent from root if leaf is failed Add libceph support for a new CRUSH tunable recently added to Ceph servers. Consider the CRUSH rule step chooseleaf firstn 0 type This rule means that replicas will be chosen in a manner such that each chosen leaf's branch will contain a unique instance of . When an object is re-replicated after a leaf failure, if the CRUSH map uses a chooseleaf rule the remapped replica ends up under the bucket that held the failed leaf. This causes uneven data distribution across the storage cluster, to the point that when all the leaves but one fail under a particular bucket, that remaining leaf holds all the data from its failed peers. This behavior also limits the number of peers that can participate in the re-replication of the data held by the failed leaf, which increases the time required to re-replicate after a failure. For a chooseleaf CRUSH rule, the tree descent has two steps: call them the inner and outer descents. If the tree descent down to is the outer descent, and the descent from down to a leaf is the inner descent, the issue is that a down leaf is detected on the inner descent, so only the inner descent is retried. In order to disperse re-replicated data as widely as possible across a storage cluster after a failure, we want to retry the outer descent. So, fix up crush_choose() to allow the inner descent to return immediately on choosing a failed leaf. Wire this up as a new CRUSH tunable. Note that after this change, for a chooseleaf rule, if the primary OSD in a placement group has failed, choosing a replacement may result in one of the other OSDs in the PG colliding with the new primary. This requires that OSD's data for that PG to need moving as well. This seems unavoidable but should be relatively rare. This corresponds to ceph.git commit 88f218181a9e6d2292e2697fc93797d0f6d6e5dc. Signed-off-by: Jim Schutt Reviewed-by: Sage Weil --- include/linux/ceph/ceph_features.h | 7 +++++-- include/linux/crush/crush.h | 2 ++ 2 files changed, 7 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/ceph_features.h b/include/linux/ceph/ceph_features.h index 6b7c6acbb3bf..2160aab482f6 100644 --- a/include/linux/ceph/ceph_features.h +++ b/include/linux/ceph/ceph_features.h @@ -14,7 +14,9 @@ #define CEPH_FEATURE_DIRLAYOUTHASH (1<<7) /* bits 8-17 defined by user-space; not supported yet here */ #define CEPH_FEATURE_CRUSH_TUNABLES (1<<18) -/* bits 19-25 defined by user-space; not supported yet here */ +/* bits 19-24 defined by user-space; not supported yet here */ +#define CEPH_FEATURE_CRUSH_TUNABLES2 (1<<25) +/* bit 26 defined by user-space; not supported yet here */ #define CEPH_FEATURE_REPLY_CREATE_INODE (1<<27) /* @@ -22,7 +24,8 @@ */ #define CEPH_FEATURES_SUPPORTED_DEFAULT \ (CEPH_FEATURE_NOSRCADDR | \ - CEPH_FEATURE_CRUSH_TUNABLES | \ + CEPH_FEATURE_CRUSH_TUNABLES | \ + CEPH_FEATURE_CRUSH_TUNABLES2 | \ CEPH_FEATURE_REPLY_CREATE_INODE) #define CEPH_FEATURES_REQUIRED_DEFAULT \ diff --git a/include/linux/crush/crush.h b/include/linux/crush/crush.h index 25baa287cff7..6a1101f24cfb 100644 --- a/include/linux/crush/crush.h +++ b/include/linux/crush/crush.h @@ -162,6 +162,8 @@ struct crush_map { __u32 choose_local_fallback_tries; /* choose attempts before giving up */ __u32 choose_total_tries; + /* attempt chooseleaf inner descent once; on failure retry outer descent */ + __u32 chooseleaf_descend_once; }; -- cgit v1.2.3 From 132368bd0b286457f83f56d0bbdecd85999562dc Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Sat, 1 Dec 2012 06:46:33 -0800 Subject: Drivers: hv: Add state to manage batched reading For the "read" side signaling optimization, the reader has to completely drain the queue before exiting. Add state to manage this "batched" reading. Signed-off-by: K. Y. Srinivasan Reviewed-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index e73b852156b1..1ffe84de6c55 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -882,8 +882,28 @@ struct vmbus_channel { void (*onchannel_callback)(void *context); void *channel_callback_context; + + /* + * A channel can be marked for efficient (batched) + * reading: + * If batched_reading is set to "true", we read until the + * channel is empty and hold off interrupts from the host + * during the entire read process. + * If batched_reading is set to "false", the client is not + * going to perform batched reading. + * + * By default we will enable batched reading; specific + * drivers that don't want this behavior can turn it off. + */ + + bool batched_reading; }; +static inline void set_channel_read_state(struct vmbus_channel *c, bool state) +{ + c->batched_reading = state; +} + void vmbus_onmessage(void *context); int vmbus_request_offers(void); -- cgit v1.2.3 From 610071c38463998d5a66388ff9956aaeb24b49a8 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Sat, 1 Dec 2012 06:46:38 -0800 Subject: Drivers: hv: Support handling multiple VMBUS versions The current code hard coded the vmbus version independent of the host it was running on. Add code to dynamically negotiate the most appropriate version. Signed-off-by: K. Y. Srinivasan Reviewed-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 1ffe84de6c55..b097bf9d9328 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -406,12 +406,6 @@ hv_get_ringbuffer_availbytes(struct hv_ring_buffer_info *rbi, #define HV_DRV_VERSION "3.1" -/* - * A revision number of vmbus that is used for ensuring both ends on a - * partition are using compatible versions. - */ -#define VMBUS_REVISION_NUMBER 13 - /* Make maximum size of pipe payload of 16K */ #define MAX_PIPE_DATA_PAYLOAD (sizeof(u8) * 16384) -- cgit v1.2.3 From 2416603ef1e12955850ade0d0cdecbef1fc59fa3 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Sat, 1 Dec 2012 06:46:39 -0800 Subject: Drivers: hv: Update the ring buffer structure to match win8 functionality Update the ringbuffer structure to support win8 functionality. Signed-off-by: K. Y. Srinivasan Reviewed-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 28 +++++++++++++++++++++------- 1 file changed, 21 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index b097bf9d9328..2b5480126394 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -325,14 +325,28 @@ struct hv_ring_buffer { u32 interrupt_mask; - /* Pad it to PAGE_SIZE so that data starts on page boundary */ - u8 reserved[4084]; - - /* NOTE: - * The interrupt_mask field is used only for channels but since our - * vmbus connection also uses this data structure and its data starts - * here, we commented out this field. + /* + * Win8 uses some of the reserved bits to implement + * interrupt driven flow management. On the send side + * we can request that the receiver interrupt the sender + * when the ring transitions from being full to being able + * to handle a message of size "pending_send_sz". + * + * Add necessary state for this enhancement. */ + u32 pending_send_sz; + + u32 reserved1[12]; + + union { + struct { + u32 feat_pending_send_sz:1; + }; + u32 value; + } feature_bits; + + /* Pad it to PAGE_SIZE so that data starts on page boundary */ + u8 reserved2[4028]; /* * Ring data starts here + RingDataStartOffset -- cgit v1.2.3 From 29423b7e51a8ea4d687cf98c3a50f33c554be194 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Sat, 1 Dec 2012 06:46:40 -0800 Subject: Drivers: hv: Extend/modify vmbus_channel_offer_channel for win7 and beyond The "offfer" message sent by the host has been extended in win7 (ws2008 R2). Add/modify state to reflect this extension. All these changes are backward compatible. Signed-off-by: K. Y. Srinivasan Reviewed-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 36 +++++++++++++++++++++++++++++++----- 1 file changed, 31 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 2b5480126394..bee559ada3bb 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -440,9 +440,13 @@ hv_get_ringbuffer_availbytes(struct hv_ring_buffer_info *rbi, struct vmbus_channel_offer { uuid_le if_type; uuid_le if_instance; - u64 int_latency; /* in 100ns units */ - u32 if_revision; - u32 server_ctx_size; /* in bytes */ + + /* + * These two fields are not currently used. + */ + u64 reserved1; + u64 reserved2; + u16 chn_flags; u16 mmio_megabytes; /* in bytes * 1024 * 1024 */ @@ -464,7 +468,11 @@ struct vmbus_channel_offer { unsigned char user_def[MAX_PIPE_USER_DEFINED_BYTES]; } pipe; } u; - u32 padding; + /* + * The sub_channel_index is defined in win8. + */ + u16 sub_channel_index; + u16 reserved3; } __packed; /* Server Flags */ @@ -660,7 +668,25 @@ struct vmbus_channel_offer_channel { struct vmbus_channel_offer offer; u32 child_relid; u8 monitorid; - u8 monitor_allocated; + /* + * win7 and beyond splits this field into a bit field. + */ + u8 monitor_allocated:1; + u8 reserved:7; + /* + * These are new fields added in win7 and later. + * Do not access these fields without checking the + * negotiated protocol. + * + * If "is_dedicated_interrupt" is set, we must not set the + * associated bit in the channel bitmap while sending the + * interrupt to the host. + * + * connection_id is to be used in signaling the host. + */ + u16 is_dedicated_interrupt:1; + u16 reserved1:15; + u32 connection_id; } __packed; /* Rescind Offer parameters */ -- cgit v1.2.3 From 37f7278b81a9ab9b76cf4d716ba420444ca4a616 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Sat, 1 Dec 2012 06:46:41 -0800 Subject: Drivers: hv: Save and export negotiated vmbus version Export the negotiated vmbus version as this may be useful for individual drivers. Signed-off-by: K. Y. Srinivasan Reviewed-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index bee559ada3bb..134a2022a7a3 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -1204,5 +1204,11 @@ int hv_kvp_init(struct hv_util_service *); void hv_kvp_deinit(void); void hv_kvp_onchannelcallback(void *); +/* + * Negotiated version with the Host. + */ + +extern __u32 vmbus_proto_version; + #endif /* __KERNEL__ */ #endif /* _HYPERV_H */ -- cgit v1.2.3 From eafa7072e7cd806dff42b705284ca26189e527a4 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Sat, 1 Dec 2012 06:46:44 -0800 Subject: Drivers: hv: Move vmbus version definitions to hyperv.h To support version specific optimization in various vmbus drivers, move the vmbus definitions to the public header file. Signed-off-by: K. Y. Srinivasan Reviewed-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 134a2022a7a3..e72502689cdc 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -419,6 +419,21 @@ hv_get_ringbuffer_availbytes(struct hv_ring_buffer_info *rbi, */ #define HV_DRV_VERSION "3.1" +/* + * VMBUS version is 32 bit entity broken up into + * two 16 bit quantities: major_number. minor_number. + * + * 0 . 13 (Windows Server 2008) + * 1 . 1 (Windows 7) + * 2 . 4 (Windows 8) + */ + +#define VERSION_WS2008 ((0 << 16) | (13)) +#define VERSION_WIN7 ((1 << 16) | (1)) +#define VERSION_WIN8 ((2 << 16) | (4)) + +#define VERSION_INVAL -1 + /* Make maximum size of pipe payload of 16K */ #define MAX_PIPE_DATA_PAYLOAD (sizeof(u8) * 16384) -- cgit v1.2.3 From b3bf60c7b4665d40b8eae2217b54c4745f49f470 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Sat, 1 Dec 2012 06:46:45 -0800 Subject: Drivers: hv: Manage signaling state on a per-connection basis The current code has a global handle for supporting signaling of the host from guest. Make this a per-channel attribute as on some versions of the host we can signal on per-channel handle. Signed-off-by: K. Y. Srinivasan Reviewed-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index e72502689cdc..c6e2c44a1be9 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -897,6 +897,27 @@ struct vmbus_close_msg { struct vmbus_channel_close_channel msg; }; +/* Define connection identifier type. */ +union hv_connection_id { + u32 asu32; + struct { + u32 id:24; + u32 reserved:8; + } u; +}; + +/* Definition of the hv_signal_event hypercall input structure. */ +struct hv_input_signal_event { + union hv_connection_id connectionid; + u16 flag_number; + u16 rsvdz; +}; + +struct hv_input_signal_event_buffer { + u64 align8; + struct hv_input_signal_event event; +}; + struct vmbus_channel { struct list_head listentry; @@ -946,6 +967,10 @@ struct vmbus_channel { */ bool batched_reading; + + bool is_dedicated_interrupt; + struct hv_input_signal_event_buffer sig_buf; + struct hv_input_signal_event *sig_event; }; static inline void set_channel_read_state(struct vmbus_channel *c, bool state) -- cgit v1.2.3 From abbf3b2aa090b4a6bf22c935924b6467990266da Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Sat, 1 Dec 2012 06:46:48 -0800 Subject: Drivers: hv: Add state to manage incoming channel interrupt load Add state to bind a channel to a specific VCPU. This will help us better distribute incoming interrupt load. Signed-off-by: K. Y. Srinivasan Reviewed-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 21 +++++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index c6e2c44a1be9..8c3cb1fc34d4 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -732,8 +732,15 @@ struct vmbus_channel_open_channel { /* GPADL for the channel's ring buffer. */ u32 ringbuffer_gpadlhandle; - /* GPADL for the channel's server context save area. */ - u32 server_contextarea_gpadlhandle; + /* + * Starting with win8, this field will be used to specify + * the target virtual processor on which to deliver the interrupt for + * the host to guest communication. + * Prior to win8, incoming channel interrupts would only + * be delivered on cpu 0. Setting this value to 0 would + * preserve the earlier behavior. + */ + u32 target_vp; /* * The upstream ring buffer begins at offset zero in the memory @@ -971,6 +978,16 @@ struct vmbus_channel { bool is_dedicated_interrupt; struct hv_input_signal_event_buffer sig_buf; struct hv_input_signal_event *sig_event; + + /* + * Starting with win8, this field will be used to specify + * the target virtual processor on which to deliver the interrupt for + * the host to guest communication. + * Prior to win8, incoming channel interrupts would only + * be delivered on cpu 0. Setting this value to 0 would + * preserve the earlier behavior. + */ + u32 target_vp; }; static inline void set_channel_read_state(struct vmbus_channel *c, bool state) -- cgit v1.2.3 From 2a5c43a821b3b26e6af1cdb987b4daeba6f13a6f Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Sat, 1 Dec 2012 06:46:56 -0800 Subject: Drivers: hv: Enable protocol negotiation with win8 hosts Now that we have implemented all of the Win8 (WS2012) functionality, negotiate Win8 protocol with the host. Signed-off-by: K. Y. Srinivasan Reviewed-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 8c3cb1fc34d4..5095b066df94 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -434,6 +434,7 @@ hv_get_ringbuffer_availbytes(struct hv_ring_buffer_info *rbi, #define VERSION_INVAL -1 +#define VERSION_CURRENT VERSION_WIN8 /* Make maximum size of pipe payload of 16K */ #define MAX_PIPE_DATA_PAYLOAD (sizeof(u8) * 16384) -- cgit v1.2.3 From dd5f049dbdf973d9bceebef1fd73647a5ede6732 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Thu, 1 Nov 2012 08:39:27 -0500 Subject: ceph: define ceph_encode_8_safe() It's kind of a silly macro, but ceph_encode_8_safe() is the only one missing from an otherwise pretty complete set. It's not used, but neither are a couple of the others in this set. While in there, insert some whitespace to tidy up the alignment of the line-terminating backslashes in some of the macro definitions. Signed-off-by: Alex Elder Reviewed-by: Dan Mick --- include/linux/ceph/decode.h | 29 +++++++++++++++++------------ 1 file changed, 17 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/decode.h b/include/linux/ceph/decode.h index 4bbf2db45f46..cd679f2d348b 100644 --- a/include/linux/ceph/decode.h +++ b/include/linux/ceph/decode.h @@ -52,10 +52,10 @@ static inline int ceph_has_room(void **p, void *end, size_t n) return end >= *p && n <= end - *p; } -#define ceph_decode_need(p, end, n, bad) \ - do { \ - if (!likely(ceph_has_room(p, end, n))) \ - goto bad; \ +#define ceph_decode_need(p, end, n, bad) \ + do { \ + if (!likely(ceph_has_room(p, end, n))) \ + goto bad; \ } while (0) #define ceph_decode_64_safe(p, end, v, bad) \ @@ -99,8 +99,8 @@ static inline int ceph_has_room(void **p, void *end, size_t n) * * There are two possible failures: * - converting the string would require accessing memory at or - * beyond the "end" pointer provided (-E - * - memory could not be allocated for the result + * beyond the "end" pointer provided (-ERANGE) + * - memory could not be allocated for the result (-ENOMEM) */ static inline char *ceph_extract_encoded_string(void **p, void *end, size_t *lenp, gfp_t gfp) @@ -217,10 +217,10 @@ static inline void ceph_encode_string(void **p, void *end, *p += len; } -#define ceph_encode_need(p, end, n, bad) \ - do { \ - if (!likely(ceph_has_room(p, end, n))) \ - goto bad; \ +#define ceph_encode_need(p, end, n, bad) \ + do { \ + if (!likely(ceph_has_room(p, end, n))) \ + goto bad; \ } while (0) #define ceph_encode_64_safe(p, end, v, bad) \ @@ -231,12 +231,17 @@ static inline void ceph_encode_string(void **p, void *end, #define ceph_encode_32_safe(p, end, v, bad) \ do { \ ceph_encode_need(p, end, sizeof(u32), bad); \ - ceph_encode_32(p, v); \ + ceph_encode_32(p, v); \ } while (0) #define ceph_encode_16_safe(p, end, v, bad) \ do { \ ceph_encode_need(p, end, sizeof(u16), bad); \ - ceph_encode_16(p, v); \ + ceph_encode_16(p, v); \ + } while (0) +#define ceph_encode_8_safe(p, end, v, bad) \ + do { \ + ceph_encode_need(p, end, sizeof(u8), bad); \ + ceph_encode_8(p, v); \ } while (0) #define ceph_encode_copy_safe(p, end, pv, n, bad) \ -- cgit v1.2.3 From 7266507d89991fa1e989283e4e032c6d9357fe26 Mon Sep 17 00:00:00 2001 From: Kevin Cernekee Date: Mon, 17 Dec 2012 18:33:58 +0000 Subject: netfilter: nf_ct_sip: support Cisco 7941/7945 IP phones Most SIP devices use a source port of 5060/udp on SIP requests, so the response automatically comes back to port 5060: phone_ip:5060 -> proxy_ip:5060 REGISTER proxy_ip:5060 -> phone_ip:5060 100 Trying The newer Cisco IP phones, however, use a randomly chosen high source port for the SIP request but expect the response on port 5060: phone_ip:49173 -> proxy_ip:5060 REGISTER proxy_ip:5060 -> phone_ip:5060 100 Trying Standard Linux NAT, with or without nf_nat_sip, will send the reply back to port 49173, not 5060: phone_ip:49173 -> proxy_ip:5060 REGISTER proxy_ip:5060 -> phone_ip:49173 100 Trying But the phone is not listening on 49173, so it will never see the reply. This patch modifies nf_*_sip to work around this quirk by extracting the SIP response port from the Via: header, iff the source IP in the packet header matches the source IP in the SIP request. Signed-off-by: Kevin Cernekee Acked-by: Eric Dumazet Cc: Patrick McHardy Signed-off-by: Pablo Neira Ayuso --- include/linux/netfilter/nf_conntrack_sip.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netfilter/nf_conntrack_sip.h b/include/linux/netfilter/nf_conntrack_sip.h index 387bdd02945d..ba7f571a2b1c 100644 --- a/include/linux/netfilter/nf_conntrack_sip.h +++ b/include/linux/netfilter/nf_conntrack_sip.h @@ -4,12 +4,15 @@ #include +#include + #define SIP_PORT 5060 #define SIP_TIMEOUT 3600 struct nf_ct_sip_master { unsigned int register_cseq; unsigned int invite_cseq; + __be16 forced_dport; }; enum sip_expectation_classes { -- cgit v1.2.3 From 7a555613eb77c69eb6e48b61bc5f72dd42fa1780 Mon Sep 17 00:00:00 2001 From: Vladimir Kondratiev Date: Wed, 5 Dec 2012 16:48:27 -0500 Subject: dynamic_debug: dynamic hex dump Introduce print_hex_dump_debug() that can be dynamically controlled, similar to pr_debug. Also, make print_hex_dump_bytes() dynamically controlled Implement only 'p' flag (_DPRINTK_FLAGS_PRINT) to keep it simple since hex dump prints multiple lines and long prefix would impact readability. To provide line/file etc. information, use pr_debug or similar before/after print_hex_dump_debug() Signed-off-by: Vladimir Kondratiev Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman --- include/linux/dynamic_debug.h | 11 +++++++++++ include/linux/printk.h | 17 +++++++++++++++++ 2 files changed, 28 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index 6dd4787a798a..2fe93b26b42f 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -95,6 +95,17 @@ do { \ ##__VA_ARGS__); \ } while (0) +#define dynamic_hex_dump(prefix_str, prefix_type, rowsize, \ + groupsize, buf, len, ascii) \ +do { \ + DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, \ + __builtin_constant_p(prefix_str) ? prefix_str : "hexdump");\ + if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ + print_hex_dump(KERN_DEBUG, prefix_str, \ + prefix_type, rowsize, groupsize, \ + buf, len, ascii); \ +} while (0) + #else #include diff --git a/include/linux/printk.h b/include/linux/printk.h index 9afc01e5a0a6..02c95cf872cd 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -321,8 +321,13 @@ extern void hex_dump_to_buffer(const void *buf, size_t len, extern void print_hex_dump(const char *level, const char *prefix_str, int prefix_type, int rowsize, int groupsize, const void *buf, size_t len, bool ascii); +#if defined(CONFIG_DYNAMIC_DEBUG) +#define print_hex_dump_bytes(prefix_str, prefix_type, buf, len) \ + dynamic_hex_dump(prefix_str, prefix_type, 16, 1, buf, len, true) +#else extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type, const void *buf, size_t len); +#endif /* defined(CONFIG_DYNAMIC_DEBUG) */ #else static inline void print_hex_dump(const char *level, const char *prefix_str, int prefix_type, int rowsize, int groupsize, @@ -336,4 +341,16 @@ static inline void print_hex_dump_bytes(const char *prefix_str, int prefix_type, #endif +#if defined(CONFIG_DYNAMIC_DEBUG) +#define print_hex_dump_debug(prefix_str, prefix_type, rowsize, \ + groupsize, buf, len, ascii) \ + dynamic_hex_dump(prefix_str, prefix_type, rowsize, \ + groupsize, buf, len, ascii) +#else +#define print_hex_dump_debug(prefix_str, prefix_type, rowsize, \ + groupsize, buf, len, ascii) \ + print_hex_dump(KERN_DEBUG, prefix_str, prefix_type, rowsize, \ + groupsize, buf, len, ascii) +#endif /* defined(CONFIG_DYNAMIC_DEBUG) */ + #endif -- cgit v1.2.3 From af77f26caa35a95af09d1dac5c513b3901de7e37 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Fri, 9 Nov 2012 08:43:15 -0600 Subject: rbd: drop oid parameters from ceph_osdc_build_request() The last two parameters to ceph_osd_build_request() describe the object id, but the values passed always come from the osd request structure whose address is also provided. Get rid of those last two parameters. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osd_client.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index d9b880e977e6..f2e5d2cdca06 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -227,9 +227,7 @@ extern void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, u64 *plen, struct ceph_osd_req_op *src_ops, struct ceph_snap_context *snapc, - struct timespec *mtime, - const char *oid, - int oid_len); + struct timespec *mtime); extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *, struct ceph_file_layout *layout, -- cgit v1.2.3 From c885837f7d4f8c4f5cb2a744cc6929bc078e9dc0 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Tue, 13 Nov 2012 21:11:15 -0600 Subject: libceph: always allow trail in osd request An osd request structure contains an optional trail portion, which if present will contain data to be passed in the payload portion of the message containing the request. The trail field is a ceph_pagelist pointer, and if null it indicates there is no trail. A ceph_pagelist structure contains a length field, and it can legitimately hold value 0. Make use of this to change the interpretation of the "trail" of an osd request so that every osd request has trailing data, it just might have length 0. This means we change the r_trail field in a ceph_osd_request structure from a pointer to a structure that is always initialized. Note that in ceph_osdc_start_request(), the trail pointer (or now address of that structure) is assigned to a ceph message's trail field. Here's why that's still OK (looking at net/ceph/messenger.c): - What would have resulted in a null pointer previously will now refer to a 0-length page list. That message trail pointer is used in two functions, write_partial_msg_pages() and out_msg_pos_next(). - In write_partial_msg_pages(), a null page list pointer is handled the same as a message with 0-length trail, and both result in a "in_trail" variable set to false. The trail pointer is only used if in_trail is true. - The only other place the message trail pointer is used is out_msg_pos_next(). That function is only called by write_partial_msg_pages() and only touches the trail pointer if the in_trail value it is passed is true. Therefore a null ceph_msg->trail pointer is equivalent to a non-null pointer referring to a 0-length page list structure. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osd_client.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index f2e5d2cdca06..61562c792855 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -10,6 +10,7 @@ #include #include #include +#include /* * Maximum object name size @@ -22,7 +23,6 @@ struct ceph_snap_context; struct ceph_osd_request; struct ceph_osd_client; struct ceph_authorizer; -struct ceph_pagelist; /* * completion callback for async writepages @@ -95,7 +95,7 @@ struct ceph_osd_request { struct bio *r_bio; /* instead of pages */ #endif - struct ceph_pagelist *r_trail; /* trailing part of the data */ + struct ceph_pagelist r_trail; /* trailing part of the data */ }; struct ceph_osd_event { -- cgit v1.2.3 From 0120be3c60d46d6d55f4bf7a3d654cc705eb0c54 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Wed, 14 Nov 2012 09:38:19 -0600 Subject: libceph: pass length to ceph_osdc_build_request() The len argument to ceph_osdc_build_request() is set up to be passed by address, but that function never updates its value so there's no need to do this. Tighten up the interface by passing the length directly. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osd_client.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 61562c792855..4bfb4582439a 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -224,7 +224,7 @@ extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client * struct bio *bio); extern void ceph_osdc_build_request(struct ceph_osd_request *req, - u64 off, u64 *plen, + u64 off, u64 len, struct ceph_osd_req_op *src_ops, struct ceph_snap_context *snapc, struct timespec *mtime); -- cgit v1.2.3 From e8afad656cbcd06d02a7bacd4b318fa0e2907de0 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Wed, 14 Nov 2012 09:38:19 -0600 Subject: libceph: pass length to ceph_calc_file_object_mapping() ceph_calc_file_object_mapping() takes (among other things) a "file" offset and length, and based on the layout, determines the object number ("bno") backing the affected portion of the file's data and the offset into that object where the desired range begins. It also computes the size that should be used for the request--either the amount requested or something less if that would exceed the end of the object. This patch changes the input length parameter in this function so it is used only for input. That is, the argument will be passed by value rather than by address, so the value provided won't get updated by the function. The value would only get updated if the length would surpass the current object, and in that case the value it got updated to would be exactly that returned in *oxlen. Only one of the two callers is affected by this change. Update ceph_calc_raw_layout() so it records any updated value. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osdmap.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h index 5ea57ba69320..1f653e2ff5cc 100644 --- a/include/linux/ceph/osdmap.h +++ b/include/linux/ceph/osdmap.h @@ -110,7 +110,7 @@ extern void ceph_osdmap_destroy(struct ceph_osdmap *map); /* calculate mapping of a file extent to an object */ extern int ceph_calc_file_object_mapping(struct ceph_file_layout *layout, - u64 off, u64 *plen, + u64 off, u64 len, u64 *bno, u64 *oxoff, u64 *oxlen); /* calculate mapping of object to a placement group */ -- cgit v1.2.3 From 4d6b250bf18d44571d69a0f4afec4b6a1969729f Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Tue, 13 Nov 2012 21:11:15 -0600 Subject: libceph: drop snapid in ceph_calc_raw_layout() A snapshot id must be provided to ceph_calc_raw_layout() even though it is not needed at all for calculating the layout. Where the snapshot id *is* needed is when building the request message for an osd operation. Drop the snapid parameter from ceph_calc_raw_layout() and pass that value instead in ceph_osdc_build_request(). Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osd_client.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 4bfb4582439a..0e82a0a967ef 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -209,7 +209,6 @@ extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc, extern int ceph_calc_raw_layout(struct ceph_osd_client *osdc, struct ceph_file_layout *layout, - u64 snapid, u64 off, u64 *plen, u64 *bno, struct ceph_osd_request *req, struct ceph_osd_req_op *op); @@ -227,6 +226,7 @@ extern void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, u64 len, struct ceph_osd_req_op *src_ops, struct ceph_snap_context *snapc, + u64 snap_id, struct timespec *mtime); extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *, -- cgit v1.2.3 From e75b45cf36565fd8ba206a9d80f670a86e61ba2f Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Tue, 13 Nov 2012 21:11:14 -0600 Subject: libceph: drop osdc from ceph_calc_raw_layout() The osdc parameter to ceph_calc_raw_layout() is not used, so get rid of it. Consequently, the corresponding parameter in calc_layout() becomes unused, so get rid of that as well. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osd_client.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 0e82a0a967ef..fe3a6e8db1f9 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -207,8 +207,7 @@ extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc, extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg); -extern int ceph_calc_raw_layout(struct ceph_osd_client *osdc, - struct ceph_file_layout *layout, +extern int ceph_calc_raw_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, u64 *bno, struct ceph_osd_request *req, struct ceph_osd_req_op *op); -- cgit v1.2.3 From d178a9e74006e80f568d87e29f2a68f14fc7cbb1 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Tue, 13 Nov 2012 21:11:15 -0600 Subject: libceph: don't set flags in ceph_osdc_alloc_request() The only thing ceph_osdc_alloc_request() really does with the flags value it is passed is assign it to the newly-created osd request structure. Do that in the caller instead. Both callers subsequently call ceph_osdc_build_request(), so have that function (instead of ceph_osdc_alloc_request()) issue a warning if a request comes through with neither the read nor write flags set. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osd_client.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index fe3a6e8db1f9..6ddda5bbd1a6 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -213,7 +213,6 @@ extern int ceph_calc_raw_layout(struct ceph_file_layout *layout, struct ceph_osd_req_op *op); extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, - int flags, struct ceph_snap_context *snapc, struct ceph_osd_req_op *ops, bool use_mempool, -- cgit v1.2.3 From 54a5400721da7fa5a16cea151aade5bdfee74111 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Tue, 13 Nov 2012 21:11:15 -0600 Subject: libceph: don't set pages or bio in ceph_osdc_alloc_request() Only one of the two callers of ceph_osdc_alloc_request() provides page or bio data for its payload. And essentially all that function was doing with those arguments was assigning them to fields in the osd request structure. Simplify ceph_osdc_alloc_request() by having the caller take care of making those assignments Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osd_client.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 6ddda5bbd1a6..75f56d372d44 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -216,9 +216,7 @@ extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client * struct ceph_snap_context *snapc, struct ceph_osd_req_op *ops, bool use_mempool, - gfp_t gfp_flags, - struct page **pages, - struct bio *bio); + gfp_t gfp_flags); extern void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, u64 len, -- cgit v1.2.3 From ae7ca4a35b1f5df86e2c32b2cfc01a8d528c7b8c Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Tue, 13 Nov 2012 21:11:15 -0600 Subject: libceph: pass num_op with ops Both ceph_osdc_alloc_request() and ceph_osdc_build_request() are provided an array of ceph osd request operations. Rather than just passing the number of operations in the array, the caller is required append an additional zeroed operation structure to signal the end of the array. All callers know the number of operations at the time these functions are called, so drop the silly zero entry and supply that number directly. As a result, get_num_ops() is no longer needed. This also means that ceph_osdc_alloc_request() never uses its ops argument, so that can be dropped. Also rbd_create_rw_ops() no longer needs to add one to reserve room for the additional op. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osd_client.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 75f56d372d44..2b04d054e09d 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -214,12 +214,13 @@ extern int ceph_calc_raw_layout(struct ceph_file_layout *layout, extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, struct ceph_snap_context *snapc, - struct ceph_osd_req_op *ops, + unsigned int num_op, bool use_mempool, gfp_t gfp_flags); extern void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, u64 len, + unsigned int num_op, struct ceph_osd_req_op *src_ops, struct ceph_snap_context *snapc, u64 snap_id, -- cgit v1.2.3 From 2b5fc648af5eec2f4fe984cb6b926214e02c5cf4 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Wed, 14 Nov 2012 09:38:20 -0600 Subject: rbd: kill ceph_osd_req_op->flags The flags field of struct ceph_osd_req_op is never used, so just get rid of it. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osd_client.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 2b04d054e09d..69287ccfe68a 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -157,7 +157,6 @@ struct ceph_osd_client { struct ceph_osd_req_op { u16 op; /* CEPH_OSD_OP_* */ - u32 flags; /* CEPH_OSD_FLAG_* */ union { struct { u64 offset, length; -- cgit v1.2.3 From bab734fcdf2c690371e6749ce484b17653b3cb0e Mon Sep 17 00:00:00 2001 From: Fabio Porcedda Date: Wed, 9 Jan 2013 12:15:26 +0100 Subject: driver core: add helper macro for platform_driver_probe() boilerplate For simple modules that contain a single platform_driver without any additional setup code then ends up being a block of duplicated boilerplate. This patch adds a new macro, module_platform_driver_probe(), which replaces the module_init()/module_exit() registrations with template functions. This macro use the same idea of module_platform_driver(). This macro is useful to stop the misuse of module_platform_driver() for removing the platform_driver_probe() boilerplate. Signed-off-by: Fabio Porcedda Signed-off-by: Greg Kroah-Hartman --- include/linux/platform_device.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h index a9ded9a3c175..c082c71f7225 100644 --- a/include/linux/platform_device.h +++ b/include/linux/platform_device.h @@ -204,6 +204,24 @@ static inline void platform_set_drvdata(struct platform_device *pdev, void *data module_driver(__platform_driver, platform_driver_register, \ platform_driver_unregister) +/* module_platform_driver_probe() - Helper macro for drivers that don't do + * anything special in module init/exit. This eliminates a lot of + * boilerplate. Each module may only use this macro once, and + * calling it replaces module_init() and module_exit() + */ +#define module_platform_driver_probe(__platform_driver, __platform_probe) \ +static int __init __platform_driver##_init(void) \ +{ \ + return platform_driver_probe(&(__platform_driver), \ + __platform_probe); \ +} \ +module_init(__platform_driver##_init); \ +static void __exit __platform_driver##_exit(void) \ +{ \ + platform_driver_unregister(&(__platform_driver)); \ +} \ +module_exit(__platform_driver##_exit); + extern struct platform_device *platform_create_bundle(struct platform_driver *driver, int (*probe)(struct platform_device *), struct resource *res, unsigned int n_res, -- cgit v1.2.3 From fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 Mon Sep 17 00:00:00 2001 From: Jon Mason Date: Fri, 16 Nov 2012 19:27:12 -0700 Subject: PCI-Express Non-Transparent Bridge Support A PCI-Express non-transparent bridge (NTB) is a point-to-point PCIe bus connecting 2 systems, providing electrical isolation between the two subsystems. A non-transparent bridge is functionally similar to a transparent bridge except that both sides of the bridge have their own independent address domains. The host on one side of the bridge will not have the visibility of the complete memory or I/O space on the other side of the bridge. To communicate across the non-transparent bridge, each NTB endpoint has one (or more) apertures exposed to the local system. Writes to these apertures are mirrored to memory on the remote system. Communications can also occur through the use of doorbell registers that initiate interrupts to the alternate domain, and scratch-pad registers accessible from both sides. The NTB device driver is needed to configure these memory windows, doorbell, and scratch-pad registers as well as use them in such a way as they can be turned into a viable communication channel to the remote system. ntb_hw.[ch] determines the usage model (NTB to NTB or NTB to Root Port) and abstracts away the underlying hardware to provide access and a common interface to the doorbell registers, scratch pads, and memory windows. These hardware interfaces are exported so that other, non-mainlined kernel drivers can access these. ntb_transport.[ch] also uses the exported interfaces in ntb_hw.[ch] to setup a communication channel(s) and provide a reliable way of transferring data from one side to the other, which it then exports so that "client" drivers can access them. These client drivers are used to provide a standard kernel interface (i.e., Ethernet device) to NTB, such that Linux can transfer data from one system to the other in a standard way. Signed-off-by: Jon Mason Reviewed-by: Nicholas Bellinger Signed-off-by: Greg Kroah-Hartman --- include/linux/ntb.h | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 include/linux/ntb.h (limited to 'include/linux') diff --git a/include/linux/ntb.h b/include/linux/ntb.h new file mode 100644 index 000000000000..f6a15205853b --- /dev/null +++ b/include/linux/ntb.h @@ -0,0 +1,83 @@ +/* + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * Copyright(c) 2012 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * BSD LICENSE + * + * Copyright(c) 2012 Intel Corporation. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copy + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Intel PCIe NTB Linux driver + * + * Contact Information: + * Jon Mason + */ + +struct ntb_transport_qp; + +struct ntb_client { + struct device_driver driver; + int (*probe) (struct pci_dev *pdev); + void (*remove) (struct pci_dev *pdev); +}; + +int ntb_register_client(struct ntb_client *drvr); +void ntb_unregister_client(struct ntb_client *drvr); +int ntb_register_client_dev(char *device_name); +void ntb_unregister_client_dev(char *device_name); + +struct ntb_queue_handlers { + void (*rx_handler) (struct ntb_transport_qp *qp, void *qp_data, + void *data, int len); + void (*tx_handler) (struct ntb_transport_qp *qp, void *qp_data, + void *data, int len); + void (*event_handler) (void *data, int status); +}; + +unsigned char ntb_transport_qp_num(struct ntb_transport_qp *qp); +unsigned int ntb_transport_max_size(struct ntb_transport_qp *qp); +struct ntb_transport_qp * +ntb_transport_create_queue(void *data, struct pci_dev *pdev, + const struct ntb_queue_handlers *handlers); +void ntb_transport_free_queue(struct ntb_transport_qp *qp); +int ntb_transport_rx_enqueue(struct ntb_transport_qp *qp, void *cb, void *data, + unsigned int len); +int ntb_transport_tx_enqueue(struct ntb_transport_qp *qp, void *cb, void *data, + unsigned int len); +void *ntb_transport_rx_remove(struct ntb_transport_qp *qp, unsigned int *len); +void ntb_transport_link_up(struct ntb_transport_qp *qp); +void ntb_transport_link_down(struct ntb_transport_qp *qp); +bool ntb_transport_link_query(struct ntb_transport_qp *qp); -- cgit v1.2.3 From 337dc3a7684cf6577b5595b9bb96e1af06baec41 Mon Sep 17 00:00:00 2001 From: Praveen Paneri Date: Fri, 23 Nov 2012 16:03:06 +0530 Subject: usb: phy: samsung: Introducing usb phy driver for hsotg This driver uses usb_phy interface to interact with s3c-hsotg. Supports phy_init and phy_shutdown functions to enable/disable usb phy. Support will be extended to host controllers and more Samsung SoCs. Signed-off-by: Praveen Paneri Acked-by: Heiko Stuebner Acked-by: Kyungmin Park Signed-off-by: Felipe Balbi --- include/linux/platform_data/samsung-usbphy.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 include/linux/platform_data/samsung-usbphy.h (limited to 'include/linux') diff --git a/include/linux/platform_data/samsung-usbphy.h b/include/linux/platform_data/samsung-usbphy.h new file mode 100644 index 000000000000..1bd24cba982b --- /dev/null +++ b/include/linux/platform_data/samsung-usbphy.h @@ -0,0 +1,27 @@ +/* + * Copyright (C) 2012 Samsung Electronics Co.Ltd + * http://www.samsung.com/ + * Author: Praveen Paneri + * + * Defines platform data for samsung usb phy driver. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#ifndef __SAMSUNG_USBPHY_PLATFORM_H +#define __SAMSUNG_USBPHY_PLATFORM_H + +/** + * samsung_usbphy_data - Platform data for USB PHY driver. + * @pmu_isolation: Function to control usb phy isolation in PMU. + */ +struct samsung_usbphy_data { + void (*pmu_isolation)(int on); +}; + +extern void samsung_usbphy_set_pdata(struct samsung_usbphy_data *pd); + +#endif /* __SAMSUNG_USBPHY_PLATFORM_H */ -- cgit v1.2.3 From f868ef995b32f0f08d7b6ce700bbe25de3ad65ac Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Tue, 8 Jan 2013 22:43:12 +0100 Subject: pinctrl: pinconf-generic: add drive strength parameter Some pin configurations IP allows to set the current output to the pin. This patch adds such a parameter to the pinconf-generic mechanism. This parameter takes as argument the drive strength in mA. Signed-off-by: Maxime Ripard Signed-off-by: Linus Walleij --- include/linux/pinctrl/pinconf-generic.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h index b23d99da3b4b..40d7bb9c7562 100644 --- a/include/linux/pinctrl/pinconf-generic.h +++ b/include/linux/pinctrl/pinconf-generic.h @@ -46,6 +46,8 @@ * @PIN_CONFIG_DRIVE_OPEN_SOURCE: the pin will be driven with open source * (open emitter). Sending this config will enabale open drain mode, the * argument is ignored. + * @PIN_CONFIG_DRIVE_STRENGTH: the pin will output the current passed as + * argument. The argument is in mA. * @PIN_CONFIG_INPUT_SCHMITT_DISABLE: disable schmitt-trigger mode on the pin. * @PIN_CONFIG_INPUT_SCHMITT: this will configure an input pin to run in * schmitt-trigger mode. If the schmitt-trigger has adjustable hysteresis, @@ -76,6 +78,7 @@ enum pin_config_param { PIN_CONFIG_DRIVE_PUSH_PULL, PIN_CONFIG_DRIVE_OPEN_DRAIN, PIN_CONFIG_DRIVE_OPEN_SOURCE, + PIN_CONFIG_DRIVE_STRENGTH, PIN_CONFIG_INPUT_SCHMITT_DISABLE, PIN_CONFIG_INPUT_SCHMITT, PIN_CONFIG_INPUT_DEBOUNCE, -- cgit v1.2.3 From bb813f4c933ae9f887a014483690d5f8b8ec05e1 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 18 Jan 2013 14:05:56 -0800 Subject: init, block: try to load default elevator module early during boot This patch adds default module loading and uses it to load the default block elevator. During boot, it's called right after initramfs or initrd is made available and right before control is passed to userland. This ensures that as long as the modules are available in the usual places in initramfs, initrd or the root filesystem, the default modules are loaded as soon as possible. This will replace the on-demand elevator module loading from elevator init path. v2: Fixed build breakage when !CONFIG_BLOCK. Reported by kbuild test robot. Signed-off-by: Tejun Heo Cc: Jens Axboe Cc: Arjan van de Ven Cc: Linus Torvalds Cc: Alex Riesen Cc: Fengguang We --- include/linux/elevator.h | 5 +++++ include/linux/init.h | 1 + 2 files changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/elevator.h b/include/linux/elevator.h index c03af7687bb4..186620631750 100644 --- a/include/linux/elevator.h +++ b/include/linux/elevator.h @@ -138,6 +138,7 @@ extern void elv_drain_elevator(struct request_queue *); /* * io scheduler registration */ +extern void __init load_default_elevator_module(void); extern int elv_register(struct elevator_type *); extern void elv_unregister(struct elevator_type *); @@ -206,5 +207,9 @@ enum { INIT_LIST_HEAD(&(rq)->csd.list); \ } while (0) +#else /* CONFIG_BLOCK */ + +static inline void load_default_elevator_module(void) { } + #endif /* CONFIG_BLOCK */ #endif diff --git a/include/linux/init.h b/include/linux/init.h index a799273714ac..9230c9408d8b 100644 --- a/include/linux/init.h +++ b/include/linux/init.h @@ -161,6 +161,7 @@ extern unsigned int reset_devices; /* used by init/main.c */ void setup_arch(char **); void prepare_namespace(void); +void __init load_default_modules(void); extern void (*late_time_init)(void); -- cgit v1.2.3 From 84b233adcca3cacd5cfa8013a5feda7a3db4a9af Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 18 Jan 2013 14:05:56 -0800 Subject: workqueue: implement current_is_async() This function queries whether %current is an async worker executing an async item. This will be used to implement warning on synchronous request_module() from async workers. Signed-off-by: Tejun Heo --- include/linux/async.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/async.h b/include/linux/async.h index 7a24fe9b44b4..345169cfa304 100644 --- a/include/linux/async.h +++ b/include/linux/async.h @@ -52,4 +52,5 @@ extern void async_synchronize_full_domain(struct async_domain *domain); extern void async_synchronize_cookie(async_cookie_t cookie); extern void async_synchronize_cookie_domain(async_cookie_t cookie, struct async_domain *domain); +extern bool current_is_async(void); #endif -- cgit v1.2.3 From 833d6e01b4cfbc033a915ae02744247bbf7c619d Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 18 Jan 2013 22:40:32 +0200 Subject: debugfs: regset32: make struct debugfs_reg32 pointer const no user of that should ever change that pointer, so let's mark it const to prevent that from happening. Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- include/linux/debugfs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h index 66c434f5dd1e..63f2465807d4 100644 --- a/include/linux/debugfs.h +++ b/include/linux/debugfs.h @@ -33,7 +33,7 @@ struct debugfs_reg32 { }; struct debugfs_regset32 { - struct debugfs_reg32 *regs; + const struct debugfs_reg32 *regs; int nregs; void __iomem *base; }; -- cgit v1.2.3 From 4f73bc4dd3e8563ef4109f293a092820dff66d92 Mon Sep 17 00:00:00 2001 From: Joe Millenbach Date: Thu, 17 Jan 2013 22:44:22 -0800 Subject: tty: Added a CONFIG_TTY option to allow removal of TTY The option allows you to remove TTY and compile without errors. This saves space on systems that won't support TTY interfaces anyway. bloat-o-meter output is below. The bulk of this patch consists of Kconfig changes adding "depends on TTY" to various serial devices and similar drivers that require the TTY layer. Ideally, these dependencies would occur on a common intermediate symbol such as SERIO, but most drivers "select SERIO" rather than "depends on SERIO", and "select" does not respect dependencies. bloat-o-meter output comparing our previous minimal to new minimal by removing TTY. The list is filtered to not show removed entries with awk '$3 != "-"' as the list was very long. add/remove: 0/226 grow/shrink: 2/14 up/down: 6/-35356 (-35350) function old new delta chr_dev_init 166 170 +4 allow_signal 80 82 +2 static.__warned 143 142 -1 disallow_signal 63 62 -1 __set_special_pids 95 94 -1 unregister_console 126 121 -5 start_kernel 546 541 -5 register_console 593 588 -5 copy_from_user 45 40 -5 sys_setsid 128 120 -8 sys_vhangup 32 19 -13 do_exit 1543 1526 -17 bitmap_zero 60 40 -20 arch_local_irq_save 137 117 -20 release_task 674 652 -22 static.spin_unlock_irqrestore 308 260 -48 Signed-off-by: Joe Millenbach Reviewed-by: Jamey Sharp Reviewed-by: Josh Triplett Signed-off-by: Greg Kroah-Hartman --- include/linux/console.h | 5 +++++ include/linux/proc_fs.h | 5 +++++ include/linux/tty.h | 44 +++++++++++++++++++++++++++++++++----------- 3 files changed, 43 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/console.h b/include/linux/console.h index dedb082fe50f..3b709da1786e 100644 --- a/include/linux/console.h +++ b/include/linux/console.h @@ -157,7 +157,12 @@ extern int is_console_locked(void); extern int braille_register_console(struct console *, int index, char *console_options, char *braille_options); extern int braille_unregister_console(struct console *); +#ifdef CONFIG_TTY extern void console_sysfs_notify(void); +#else +static inline void console_sysfs_notify(void) +{ } +#endif extern bool console_suspend_enabled; /* Suspend and resume console messages over PM events */ diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h index 32676b35d2f5..3c22538aab66 100644 --- a/include/linux/proc_fs.h +++ b/include/linux/proc_fs.h @@ -127,7 +127,12 @@ extern void pid_ns_release_proc(struct pid_namespace *ns); * proc_tty.c */ struct tty_driver; +#ifdef CONFIG_TTY extern void proc_tty_init(void); +#else +static inline void proc_tty_init(void) +{ } +#endif extern void proc_tty_register_driver(struct tty_driver *driver); extern void proc_tty_unregister_driver(struct tty_driver *driver); diff --git a/include/linux/tty.h b/include/linux/tty.h index f89acd1ed6d3..c75d886b0307 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -318,11 +318,43 @@ struct tty_file_private { #define TTY_WRITE_FLUSH(tty) tty_write_flush((tty)) +#ifdef CONFIG_TTY +extern void console_init(void); +extern void tty_kref_put(struct tty_struct *tty); +extern struct pid *tty_get_pgrp(struct tty_struct *tty); +extern void tty_vhangup_self(void); +extern void disassociate_ctty(int priv); +extern dev_t tty_devnum(struct tty_struct *tty); +extern void proc_clear_tty(struct task_struct *p); +extern struct tty_struct *get_current_tty(void); +/* tty_io.c */ +extern int __init tty_init(void); +#else +static inline void console_init(void) +{ } +static inline void tty_kref_put(struct tty_struct *tty) +{ } +static inline struct pid *tty_get_pgrp(struct tty_struct *tty) +{ return NULL; } +static inline void tty_vhangup_self(void) +{ } +static inline void disassociate_ctty(int priv) +{ } +static inline dev_t tty_devnum(struct tty_struct *tty) +{ return 0; } +static inline void proc_clear_tty(struct task_struct *p) +{ } +static inline struct tty_struct *get_current_tty(void) +{ return NULL; } +/* tty_io.c */ +static inline int __init tty_init(void) +{ return 0; } +#endif + extern void tty_write_flush(struct tty_struct *); extern struct ktermios tty_std_termios; -extern void console_init(void); extern int vcs_init(void); extern struct class *tty_class; @@ -342,7 +374,6 @@ static inline struct tty_struct *tty_kref_get(struct tty_struct *tty) kref_get(&tty->kref); return tty; } -extern void tty_kref_put(struct tty_struct *tty); extern int tty_paranoia_check(struct tty_struct *tty, struct inode *inode, const char *routine); @@ -374,18 +405,15 @@ extern void tty_driver_remove_tty(struct tty_driver *driver, struct tty_struct *tty); extern void tty_free_termios(struct tty_struct *tty); extern int is_current_pgrp_orphaned(void); -extern struct pid *tty_get_pgrp(struct tty_struct *tty); extern int is_ignored(int sig); extern int tty_signal(int sig, struct tty_struct *tty); extern void tty_hangup(struct tty_struct *tty); extern void tty_vhangup(struct tty_struct *tty); extern void tty_vhangup_locked(struct tty_struct *tty); -extern void tty_vhangup_self(void); extern void tty_unhangup(struct file *filp); extern int tty_hung_up_p(struct file *filp); extern void do_SAK(struct tty_struct *tty); extern void __do_SAK(struct tty_struct *tty); -extern void disassociate_ctty(int priv); extern void no_tty(void); extern void tty_flush_to_ldisc(struct tty_struct *tty); extern void tty_buffer_free_all(struct tty_port *port); @@ -415,9 +443,6 @@ extern long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg); extern int tty_mode_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); extern int tty_perform_flush(struct tty_struct *tty, unsigned long arg); -extern dev_t tty_devnum(struct tty_struct *tty); -extern void proc_clear_tty(struct task_struct *p); -extern struct tty_struct *get_current_tty(void); extern void tty_default_fops(struct file_operations *fops); extern struct tty_struct *alloc_tty_struct(void); extern int tty_alloc_file(struct file *file); @@ -543,9 +568,6 @@ static inline int tty_audit_push_task(struct task_struct *tsk, } #endif -/* tty_io.c */ -extern int __init tty_init(void); - /* tty_ioctl.c */ extern int n_tty_ioctl_helper(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); -- cgit v1.2.3 From d79beb39922e41083e8bbbb3de084a6ca958e25f Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sat, 19 Jan 2013 14:29:31 +0100 Subject: ACPI / PM: Fix build for unusual combination of Kconfig options CONFIG_PM_SLEEP may be set even if CONFIG_ACPI_SLEEP is unset, although that is unusual. For this reason, make the headers of functions built for both CONFIG_ACPI and CONFIG_PM_SLEEP set simultaneously depend on that combination of Kconfig options instead of CONFIG_ACPI_SLEEP. This fixes a build problem reported by Randy Dunlap. Signed-off-by: Rafael J. Wysocki --- include/linux/acpi.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 8c1d6f2a2193..5f2be833aaf8 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -511,7 +511,7 @@ static inline int acpi_subsys_runtime_suspend(struct device *dev) { return 0; } static inline int acpi_subsys_runtime_resume(struct device *dev) { return 0; } #endif -#ifdef CONFIG_ACPI_SLEEP +#if defined(CONFIG_ACPI) && defined(CONFIG_PM_SLEEP) int acpi_dev_suspend_late(struct device *dev); int acpi_dev_resume_early(struct device *dev); int acpi_subsys_prepare(struct device *dev); -- cgit v1.2.3 From edea0d03ee5f0ae0051b6adb6681ebdf976b1ca4 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Sun, 20 Jan 2013 20:25:47 +0100 Subject: ia64: kill thread_matches(), unexport ptrace_check_attach() The ia64 function "thread_matches()" has no users since commit e868a55c2a8c ("[IA64] remove find_thread_for_addr()"). Remove it. This allows us to make ptrace_check_attach() static to kernel/ptrace.c, which is good since we'll need to change the semantics of it and fix up all the callers. Signed-off-by: Oleg Nesterov Signed-off-by: Linus Torvalds --- include/linux/ptrace.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index 1693775ecfe8..89573a33ab3c 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -45,7 +45,6 @@ extern long arch_ptrace(struct task_struct *child, long request, extern int ptrace_readdata(struct task_struct *tsk, unsigned long src, char __user *dst, int len); extern int ptrace_writedata(struct task_struct *tsk, char __user *src, unsigned long dst, int len); extern void ptrace_disable(struct task_struct *); -extern int ptrace_check_attach(struct task_struct *task, bool ignore_state); extern int ptrace_request(struct task_struct *child, long request, unsigned long addr, unsigned long data); extern void ptrace_notify(int exit_code); -- cgit v1.2.3 From 373d4d099761cb1f637bed488ab3871945882273 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Mon, 21 Jan 2013 17:17:39 +1030 Subject: taint: add explicit flag to show whether lock dep is still OK. Fix up all callers as they were before, with make one change: an unsigned module taints the kernel, but doesn't turn off lockdep. Signed-off-by: Rusty Russell --- include/linux/kernel.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index c566927efcbd..80d36874689b 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -398,7 +398,11 @@ extern int panic_on_unrecovered_nmi; extern int panic_on_io_nmi; extern int sysctl_panic_on_stackoverflow; extern const char *print_tainted(void); -extern void add_taint(unsigned flag); +enum lockdep_ok { + LOCKDEP_STILL_OK, + LOCKDEP_NOW_UNRELIABLE +}; +extern void add_taint(unsigned flag, enum lockdep_ok); extern int test_taint(unsigned flag); extern unsigned long get_taint(void); extern int root_mountflags; -- cgit v1.2.3 From 93843b3764170819aeb07fc867a0499b33a875ca Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Mon, 21 Jan 2013 17:17:39 +1030 Subject: module: constify within_module_* These helper functions just check a set intersection with a range, and don't actually modify struct module. Signed-off-by: Sasha Levin Signed-off-by: Rusty Russell --- include/linux/module.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/module.h b/include/linux/module.h index 1375ee3f03aa..ead1b5719a12 100644 --- a/include/linux/module.h +++ b/include/linux/module.h @@ -396,13 +396,13 @@ bool is_module_address(unsigned long addr); bool is_module_percpu_address(unsigned long addr); bool is_module_text_address(unsigned long addr); -static inline int within_module_core(unsigned long addr, struct module *mod) +static inline int within_module_core(unsigned long addr, const struct module *mod) { return (unsigned long)mod->module_core <= addr && addr < (unsigned long)mod->module_core + mod->core_size; } -static inline int within_module_init(unsigned long addr, struct module *mod) +static inline int within_module_init(unsigned long addr, const struct module *mod) { return (unsigned long)mod->module_init <= addr && addr < (unsigned long)mod->module_init + mod->init_size; -- cgit v1.2.3 From c94aa30edac4d328674e9c127918317009d30c1a Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 17 Jan 2013 16:35:14 +0900 Subject: ASoC: arizona: Allow number of channels clocked to be restricted Place a cap on the number of channels clocks are generated for. This is intended for use with systems which have the WM5102 master an I2S bus with multiple data lines. Signed-off-by: Mark Brown --- include/linux/mfd/arizona/pdata.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h index 8b1d1daaae16..ec3e2a2a6d77 100644 --- a/include/linux/mfd/arizona/pdata.h +++ b/include/linux/mfd/arizona/pdata.h @@ -62,6 +62,8 @@ #define ARIZONA_MAX_OUTPUT 6 +#define ARIZONA_MAX_AIF 3 + #define ARIZONA_HAP_ACT_ERM 0 #define ARIZONA_HAP_ACT_LRA 2 @@ -96,6 +98,13 @@ struct arizona_pdata { /** Pin state for GPIO pins */ int gpio_defaults[ARIZONA_MAX_GPIO]; + /** + * Maximum number of channels clocks will be generated for, + * useful for systems where and I2S bus with multiple data + * lines is mastered. + */ + int max_channels_clocked[ARIZONA_MAX_AIF]; + /** GPIO for mic detection polarity */ int micd_pol_gpio; -- cgit v1.2.3 From d6e99abb424a916ecbb127dba065a379b460a062 Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Fri, 18 Jan 2013 15:31:06 +0800 Subject: pinctrl: core: get devname from pinctrl_dev Add new function to get devname from pinctrl_dev. pinctrl_dev_get_name() can only get pinctrl description name. If we want to use gpio driver to find pinctrl device node, we need to fetch the pinctrl device name. Signed-off-by: Haojian Zhuang Signed-off-by: Linus Walleij --- include/linux/pinctrl/pinctrl.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h index 04d6700d99af..778804df293f 100644 --- a/include/linux/pinctrl/pinctrl.h +++ b/include/linux/pinctrl/pinctrl.h @@ -154,6 +154,7 @@ struct pinctrl_dev *of_pinctrl_get(struct device_node *np) #endif /* CONFIG_OF */ extern const char *pinctrl_dev_get_name(struct pinctrl_dev *pctldev); +extern const char *pinctrl_dev_get_devname(struct pinctrl_dev *pctldev); extern void *pinctrl_dev_get_drvdata(struct pinctrl_dev *pctldev); #else -- cgit v1.2.3 From 684697cbbcd076b8fde78d8863e341700533b542 Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Fri, 18 Jan 2013 15:31:15 +0800 Subject: pinctrl: generic: add slew rate config parameter Add PIN_CONFIG_SLEW_RATE parameter into pinconf-generic driver. Signed-off-by: Haojian Zhuang Signed-off-by: Linus Walleij --- include/linux/pinctrl/pinconf-generic.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h index 40d7bb9c7562..3e7909aa5c03 100644 --- a/include/linux/pinctrl/pinconf-generic.h +++ b/include/linux/pinctrl/pinconf-generic.h @@ -60,6 +60,9 @@ * @PIN_CONFIG_POWER_SOURCE: if the pin can select between different power * supplies, the argument to this parameter (on a custom format) tells * the driver which alternative power source to use. + * @PIN_CONFIG_SLEW_RATE: if the pin can select slew rate, the argument to + * this parameter (on a custom format) tells the driver which alternative + * slew rate to use. * @PIN_CONFIG_LOW_POWER_MODE: this will configure the pin for low power * operation, if several modes of operation are supported these can be * passed in the argument on a custom form, else just use argument 1 @@ -83,6 +86,7 @@ enum pin_config_param { PIN_CONFIG_INPUT_SCHMITT, PIN_CONFIG_INPUT_DEBOUNCE, PIN_CONFIG_POWER_SOURCE, + PIN_CONFIG_SLEW_RATE, PIN_CONFIG_LOW_POWER_MODE, PIN_CONFIG_OUTPUT, PIN_CONFIG_END = 0x7FFF, -- cgit v1.2.3 From 418c59e49ddc77fcb7054f2c8d52c9d47403b43e Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Fri, 14 Dec 2012 13:15:08 -0500 Subject: tracing: Fix sparse warning with is_signed_type() macro Sparse complains when is_signed_type() is used on a pointer. This macro is needed for the format output used for ftrace and perf, to know if a binary field is a signed type or not. The is_signed_type() macro is used against all fields that are recorded by events to automate the operation. The problem sparse has is with the current way is_signed_type() works: ((type)-1 < 0) If "type" is a poiner, than sparse does not like it being compared to an integer (zero). The simple fix is to just give zero the same type. The runtime result stays the same. Reported-by: Robert Jarzmik Signed-off-by: Steven Rostedt --- include/linux/ftrace_event.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index a3d489531d83..43ef8b6cce7f 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h @@ -272,7 +272,7 @@ extern int trace_define_field(struct ftrace_event_call *call, const char *type, extern int trace_add_event_call(struct ftrace_event_call *call); extern void trace_remove_event_call(struct ftrace_event_call *call); -#define is_signed_type(type) (((type)(-1)) < 0) +#define is_signed_type(type) (((type)(-1)) < (type)0) int trace_set_clr_event(const char *system, const char *event, int set); -- cgit v1.2.3 From 0f1ac8fd254b6c3e77950a1c4ee67be5dc88f7e0 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Tue, 15 Jan 2013 22:11:19 -0500 Subject: tracing/lockdep: Disable lockdep first in entering NMI When function tracing with either debug locks enabled or tracing preempt disabled, the add_preempt_count() is traced. This is an issue with lockdep and function tracing. As function tracing can disable interrupts, and lockdep records that change, lockdep may not be able to handle this recursion if it happens from an NMI context. The first thing that an NMI does is: #define nmi_enter() \ do { \ ftrace_nmi_enter(); \ BUG_ON(in_nmi()); \ add_preempt_count(NMI_OFFSET + HARDIRQ_OFFSET); \ lockdep_off(); \ rcu_nmi_enter(); \ trace_hardirq_enter(); \ } while (0) When the add_preempt_count() is traced, and the tracing callback disables interrupts, it will jump into the lockdep code. There's some places in lockdep that can't handle this re-entrance, and causes lockdep to fail. As the lockdep_off() (and lockdep_on) is a simple: void lockdep_off(void) { current->lockdep_recursion++; } and is never traced, it can be called first in nmi_enter() and lockdep_on() last in nmi_exit(). Cc: Peter Zijlstra Signed-off-by: Steven Rostedt --- include/linux/hardirq.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hardirq.h b/include/linux/hardirq.h index 624ef3f45c8e..57bfdce8fb90 100644 --- a/include/linux/hardirq.h +++ b/include/linux/hardirq.h @@ -180,10 +180,10 @@ extern void irq_exit(void); #define nmi_enter() \ do { \ + lockdep_off(); \ ftrace_nmi_enter(); \ BUG_ON(in_nmi()); \ add_preempt_count(NMI_OFFSET + HARDIRQ_OFFSET); \ - lockdep_off(); \ rcu_nmi_enter(); \ trace_hardirq_enter(); \ } while (0) @@ -192,10 +192,10 @@ extern void irq_exit(void); do { \ trace_hardirq_exit(); \ rcu_nmi_exit(); \ - lockdep_on(); \ BUG_ON(!in_nmi()); \ sub_preempt_count(NMI_OFFSET + HARDIRQ_OFFSET); \ ftrace_nmi_exit(); \ + lockdep_on(); \ } while (0) #endif /* LINUX_HARDIRQ_H */ -- cgit v1.2.3 From 06aeaaeabf69da4a3e86df532425640f51b01cef Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Fri, 28 Sep 2012 17:15:17 +0900 Subject: ftrace: Move ARCH_SUPPORTS_FTRACE_SAVE_REGS in Kconfig Move SAVE_REGS support flag into Kconfig and rename it to CONFIG_DYNAMIC_FTRACE_WITH_REGS. This also introduces CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS which indicates the architecture depending part of ftrace has a code that saves full registers. On the other hand, CONFIG_DYNAMIC_FTRACE_WITH_REGS indicates the code is enabled. Link: http://lkml.kernel.org/r/20120928081516.3560.72534.stgit@ltc138.sdl.hitachi.co.jp Cc: Ingo Molnar Cc: Ananth N Mavinakayanahalli Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Frederic Weisbecker Signed-off-by: Masami Hiramatsu Signed-off-by: Steven Rostedt --- include/linux/ftrace.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index 92691d85c320..e5ca8ef50e9b 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -74,7 +74,7 @@ typedef void (*ftrace_func_t)(unsigned long ip, unsigned long parent_ip, * SAVE_REGS - The ftrace_ops wants regs saved at each function called * and passed to the callback. If this flag is set, but the * architecture does not support passing regs - * (ARCH_SUPPORTS_FTRACE_SAVE_REGS is not defined), then the + * (CONFIG_DYNAMIC_FTRACE_WITH_REGS is not defined), then the * ftrace_ops will fail to register, unless the next flag * is set. * SAVE_REGS_IF_SUPPORTED - This is the same as SAVE_REGS, but if the @@ -418,7 +418,7 @@ void ftrace_modify_all_code(int command); #endif #ifndef FTRACE_REGS_ADDR -#ifdef ARCH_SUPPORTS_FTRACE_SAVE_REGS +#ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS # define FTRACE_REGS_ADDR ((unsigned long)ftrace_regs_caller) #else # define FTRACE_REGS_ADDR FTRACE_ADDR @@ -480,7 +480,7 @@ extern int ftrace_make_nop(struct module *mod, */ extern int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr); -#ifdef ARCH_SUPPORTS_FTRACE_SAVE_REGS +#ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS /** * ftrace_modify_call - convert from one addr to another (no nop) * @rec: the mcount call site record -- cgit v1.2.3 From e7dbfe349d12eabb7783b117e0c115f6f3d9ef9e Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Fri, 28 Sep 2012 17:15:20 +0900 Subject: kprobes/x86: Move ftrace-based kprobe code into kprobes-ftrace.c Split ftrace-based kprobes code from kprobes, and introduce CONFIG_(HAVE_)KPROBES_ON_FTRACE Kconfig flags. For the cleanup reason, this also moves kprobe_ftrace check into skip_singlestep. Link: http://lkml.kernel.org/r/20120928081520.3560.25624.stgit@ltc138.sdl.hitachi.co.jp Cc: Ingo Molnar Cc: Ananth N Mavinakayanahalli Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Frederic Weisbecker Signed-off-by: Masami Hiramatsu Signed-off-by: Steven Rostedt --- include/linux/kprobes.h | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h index 23755ba42abc..4b6ef4d33cc2 100644 --- a/include/linux/kprobes.h +++ b/include/linux/kprobes.h @@ -49,16 +49,6 @@ #define KPROBE_REENTER 0x00000004 #define KPROBE_HIT_SSDONE 0x00000008 -/* - * If function tracer is enabled and the arch supports full - * passing of pt_regs to function tracing, then kprobes can - * optimize on top of function tracing. - */ -#if defined(CONFIG_FUNCTION_TRACER) && defined(ARCH_SUPPORTS_FTRACE_SAVE_REGS) \ - && defined(ARCH_SUPPORTS_KPROBES_ON_FTRACE) -# define KPROBES_CAN_USE_FTRACE -#endif - /* Attach to insert probes on any functions which should be ignored*/ #define __kprobes __attribute__((__section__(".kprobes.text"))) @@ -316,7 +306,7 @@ extern int proc_kprobes_optimization_handler(struct ctl_table *table, #endif #endif /* CONFIG_OPTPROBES */ -#ifdef KPROBES_CAN_USE_FTRACE +#ifdef CONFIG_KPROBES_ON_FTRACE extern void kprobe_ftrace_handler(unsigned long ip, unsigned long parent_ip, struct ftrace_ops *ops, struct pt_regs *regs); extern int arch_prepare_kprobe_ftrace(struct kprobe *p); -- cgit v1.2.3 From de53c25447117eae6b3f8952f663f08a09e0dbb7 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:00 +0100 Subject: usb: gadget: add some infracture to register/unregister functions MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch provides an infrastructure to register & unregister a USB function. This allows to turn a function into a module and avoid the '#include "f_.*.c"' magic and we get a clear API / cut between the bare gadget and its functions. The concept is simple: Each function defines the DECLARE_USB_FUNCTION_INIT macro whith an unique name of the function and two allocation functions. - one to create an "instance". The instance holds the current configuration set. In case there are two usb_configudations with one function there will be one instance and two usb_functions - one to create an "function" from the instance. The name of the instance is used to automaticaly load the module if it the instance is not yet available. The usb_function callbacks are slightly modified and extended: - usb_get_function() creates a struct usb_function inclunding all pointers (bind, unbind,…). It uses the "instance" to map its configuration. So we can have _two_ struct usb_function, one for each usb_configuration. - ->unbind() Since the struct usb_function was not allocated in ->bind() it should not kfree()d here. This function should only reverse what happens in ->bind() that is request cleanup and the cleanup of allocated descriptors. - ->free_func() a simple kfree() of the struct usb_function Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- include/linux/usb/composite.h | 52 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index dc512c9432d7..3834e3330b23 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -77,6 +77,8 @@ struct usb_configuration; * in interface or class descriptors; endpoints; I/O buffers; and so on. * @unbind: Reverses @bind; called as a side effect of unregistering the * driver which added this function. + * @free_func: free the struct usb_function. + * @mod: (internal) points to the module that created this structure. * @set_alt: (REQUIRED) Reconfigures altsettings; function drivers may * initialize usb_ep.driver data at this time (when it is used). * Note that setting an interface to its current altsetting resets @@ -116,6 +118,7 @@ struct usb_configuration; * two or more distinct instances within the same configuration, providing * several independent logical data links to a USB host. */ + struct usb_function { const char *name; struct usb_gadget_strings **strings; @@ -136,6 +139,8 @@ struct usb_function { struct usb_function *); void (*unbind)(struct usb_configuration *, struct usb_function *); + void (*free_func)(struct usb_function *f); + struct module *mod; /* runtime state management */ int (*set_alt)(struct usb_function *, @@ -432,6 +437,53 @@ static inline u16 get_default_bcdDevice(void) return bcdDevice; } +struct usb_function_driver { + const char *name; + struct module *mod; + struct list_head list; + struct usb_function_instance *(*alloc_inst)(void); + struct usb_function *(*alloc_func)(struct usb_function_instance *inst); +}; + +struct usb_function_instance { + struct usb_function_driver *fd; + void (*free_func_inst)(struct usb_function_instance *inst); +}; + +void usb_function_unregister(struct usb_function_driver *f); +int usb_function_register(struct usb_function_driver *newf); +void usb_put_function_instance(struct usb_function_instance *fi); +void usb_put_function(struct usb_function *f); +struct usb_function_instance *usb_get_function_instance(const char *name); +struct usb_function *usb_get_function(struct usb_function_instance *fi); + +struct usb_configuration *usb_get_config(struct usb_composite_dev *cdev, + int val); +int usb_add_config_only(struct usb_composite_dev *cdev, + struct usb_configuration *config); + +#define DECLARE_USB_FUNCTION(_name, _inst_alloc, _func_alloc) \ + static struct usb_function_driver _name ## usb_func = { \ + .name = __stringify(_name), \ + .mod = THIS_MODULE, \ + .alloc_inst = _inst_alloc, \ + .alloc_func = _func_alloc, \ + }; \ + MODULE_ALIAS("usbfunc:"__stringify(_name)); + +#define DECLARE_USB_FUNCTION_INIT(_name, _inst_alloc, _func_alloc) \ + DECLARE_USB_FUNCTION(_name, _inst_alloc, _func_alloc) \ + static int __init _name ## mod_init(void) \ + { \ + return usb_function_register(&_name ## usb_func); \ + } \ + static void __exit _name ## mod_exit(void) \ + { \ + usb_function_unregister(&_name ## usb_func); \ + } \ + module_init(_name ## mod_init); \ + module_exit(_name ## mod_exit) + /* messaging utils */ #define DBG(d, fmt, args...) \ dev_dbg(&(d)->gadget->dev , fmt , ## args) -- cgit v1.2.3 From b473577854fea63055ff9ab84f0f52a3e8aed15e Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:05 +0100 Subject: usb: gadget: composite: add usb_remove_function() This will be used to remove a single function from a given config. Right now "ignore" that an error at ->bind() time and cleanup later during composite_unbind() / remove_config(). Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- include/linux/usb/composite.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index 3834e3330b23..8c7a6295ae78 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -461,6 +461,7 @@ struct usb_configuration *usb_get_config(struct usb_composite_dev *cdev, int val); int usb_add_config_only(struct usb_composite_dev *cdev, struct usb_configuration *config); +void usb_remove_function(struct usb_configuration *c, struct usb_function *f); #define DECLARE_USB_FUNCTION(_name, _inst_alloc, _func_alloc) \ static struct usb_function_driver _name ## usb_func = { \ -- cgit v1.2.3 From 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:15 +0100 Subject: usb: gadget: add a forward pointer from usb_function to its "instance" We can have multiple usb_functions which origin is the same "instance". Within one USB configuration there should be only one function of an instance. This back pointer helps configfs to recoginze to which instance a given usb_function belongs. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- include/linux/usb/composite.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index 8c7a6295ae78..771de7acf8dd 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -161,6 +161,7 @@ struct usb_function { /* internals */ struct list_head list; DECLARE_BITMAP(endpoints, 32); + const struct usb_function_instance *fi; }; int usb_add_function(struct usb_configuration *, struct usb_function *); -- cgit v1.2.3 From 4c49a5f0ef1bc61395329ea7a9fce2893e97eaa6 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:19 +0100 Subject: usb: gadget: udc-core: introduce UDC binding by name This patch adds udc_attach_driver() which allows to bind an UDC which is specified by name to a driver. The name of available UDCs can be obtained from /sys/class/udc. This interface is intended for configfs interface. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- include/linux/usb/gadget.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 0af6569b8cc6..62156701e4f1 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -880,6 +880,8 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver); extern int usb_add_gadget_udc(struct device *parent, struct usb_gadget *gadget); extern void usb_del_gadget_udc(struct usb_gadget *gadget); +extern int udc_attach_driver(const char *name, + struct usb_gadget_driver *driver); /*-------------------------------------------------------------------------*/ -- cgit v1.2.3 From a59233407aed54b8a9121cea75d9c6a2a470d8d3 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:20 +0100 Subject: usb: gadget: factor out two helper functions from composite_bind() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch factors out two helper functions from composite_bind() that is composite_dev_prepare() and its counterpart composite_dev_cleanup(). This will be used by the configfs which requries a slightly different bind/setup code because part of its configurations (i.e. config descripts, cdev, …) are setup in advance and VID/PID and so one should not be overwritten. Also the setup of ep0 endpoint can be delayed until the UDC is assigned. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- include/linux/usb/composite.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index 771de7acf8dd..bd6d857c12f4 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -323,7 +323,15 @@ struct usb_composite_driver { extern int usb_composite_probe(struct usb_composite_driver *driver); extern void usb_composite_unregister(struct usb_composite_driver *driver); extern void usb_composite_setup_continue(struct usb_composite_dev *cdev); +extern int composite_dev_prepare(struct usb_composite_driver *composite, + struct usb_composite_dev *cdev); +void composite_dev_cleanup(struct usb_composite_dev *cdev); +static inline struct usb_composite_driver *to_cdriver( + struct usb_gadget_driver *gdrv) +{ + return container_of(gdrv, struct usb_composite_driver, gadget_driver); +} /** * struct usb_composite_device - represents one composite usb gadget -- cgit v1.2.3 From 2d5a88990260d226a69acddf22c04f47c267b33a Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:21 +0100 Subject: usb: gadget: export composite's setup & disconnect function The configfs can't use all of composite's hooks because ->bind() and ->unbind() has to be done a little differently. ->disconnect() and ->setup() on the hand can be recycled. This patch exports them both so configfs can use them. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- include/linux/usb/composite.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index bd6d857c12f4..a212ec3e9d69 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -398,6 +398,10 @@ extern int usb_string_ids_tab(struct usb_composite_dev *c, struct usb_string *str); extern int usb_string_ids_n(struct usb_composite_dev *c, unsigned n); +extern void composite_disconnect(struct usb_gadget *gadget); +extern int composite_setup(struct usb_gadget *gadget, + const struct usb_ctrlrequest *ctrl); + /* * Some systems will need runtime overrides for the product identifiers * published in the device descriptor, either numbers or strings or both. -- cgit v1.2.3 From 9bb2859f8a8dbc9b42f3100641dd0ae80cfbe86a Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:22 +0100 Subject: usb: gadget: composite: introduce usb_gstrings_attach() The USB strings don't (yet) fully work in multiple configs/gadget environment. The string id is assigned to the descriptor and the struct usb_strings. We create a copy of the individual descriptor so we don't clash if we use a function more than once. However, we have only one struct usb_string for each string. Currently each function which is used multiple times checks for "id != 0" and only assigns string ids if it did not happen yet. This works well if we use the same function multiple times as long as we do it within the "one" gadget we have. Trouble starts once we use the same function in a second gadget. In order to solve this I introduce usb_gstrings_attach(). This function will crate a copy all structs except for the strings which are not copied. After the copy it will assign USB ids and attach it to cdev. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- include/linux/usb/composite.h | 4 ++++ include/linux/usb/gadget.h | 5 +++++ 2 files changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index a212ec3e9d69..3c671c1b37f6 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -375,6 +375,7 @@ struct usb_composite_dev { unsigned int suspended:1; struct usb_device_descriptor desc; struct list_head configs; + struct list_head gstrings; struct usb_composite_driver *driver; u8 next_string_id; char *def_manufacturer; @@ -396,6 +397,9 @@ struct usb_composite_dev { extern int usb_string_id(struct usb_composite_dev *c); extern int usb_string_ids_tab(struct usb_composite_dev *c, struct usb_string *str); +extern struct usb_string *usb_gstrings_attach(struct usb_composite_dev *cdev, + struct usb_gadget_strings **sp, unsigned n_strings); + extern int usb_string_ids_n(struct usb_composite_dev *c, unsigned n); extern void composite_disconnect(struct usb_gadget *gadget); diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 62156701e4f1..e4c119ee4ebe 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -913,6 +913,11 @@ struct usb_gadget_strings { struct usb_string *strings; }; +struct usb_gadget_string_container { + struct list_head list; + u8 *stash[0]; +}; + /* put descriptor for string with that id into buf (buflen >= 256) */ int usb_gadget_get_string(struct usb_gadget_strings *table, int id, u8 *buf); -- cgit v1.2.3 From bbb923a4c2d17ebd5ec34755fe19a33914cbd86f Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Mon, 21 Jan 2013 06:00:25 +0000 Subject: mcast: define and use MRT[6]_MAX in ip[6]_mroute_opt() This will ease further addition of new MRT[6]_* values and avoid to update in6.h each time. Note that we reduce the maximum value from 210 to 209, but 210 does not match any known value in ip[6]_mroute_setsockopt(). Signed-off-by: Nicolas Dichtel Acked-by: David L Stevens Signed-off-by: David S. Miller --- include/linux/mroute.h | 2 +- include/linux/mroute6.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mroute.h b/include/linux/mroute.h index ea00d9162ee5..79aaa9fc1a15 100644 --- a/include/linux/mroute.h +++ b/include/linux/mroute.h @@ -9,7 +9,7 @@ #ifdef CONFIG_IP_MROUTE static inline int ip_mroute_opt(int opt) { - return (opt >= MRT_BASE) && (opt <= MRT_BASE + 10); + return (opt >= MRT_BASE) && (opt <= MRT_MAX); } #else static inline int ip_mroute_opt(int opt) diff --git a/include/linux/mroute6.h b/include/linux/mroute6.h index a223561ba12e..66982e764051 100644 --- a/include/linux/mroute6.h +++ b/include/linux/mroute6.h @@ -10,7 +10,7 @@ #ifdef CONFIG_IPV6_MROUTE static inline int ip6_mroute_opt(int opt) { - return (opt >= MRT6_BASE) && (opt <= MRT6_BASE + 10); + return (opt >= MRT6_BASE) && (opt <= MRT6_MAX); } #else static inline int ip6_mroute_opt(int opt) -- cgit v1.2.3 From fa0879e37b59e8e3f130a30a9e6fa515717c5bdd Mon Sep 17 00:00:00 2001 From: Stefan Hajnoczi Date: Mon, 21 Jan 2013 01:17:22 +0000 Subject: net: split eth_mac_addr for better error handling When we set mac address, software mac address in system and hardware mac address all need to be updated. Current eth_mac_addr() doesn't allow callers to implement error handling nicely. This patch split eth_mac_addr() to prepare part and real commit part, then we can prepare first, and try to change hardware address, then do the real commit if hardware address is set successfully. Signed-off-by: Stefan Hajnoczi Signed-off-by: Amos Kong Signed-off-by: David S. Miller --- include/linux/etherdevice.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h index 1a43e1b4f7ad..c623861964e4 100644 --- a/include/linux/etherdevice.h +++ b/include/linux/etherdevice.h @@ -40,6 +40,8 @@ extern int eth_header_cache(const struct neighbour *neigh, struct hh_cache *hh, extern void eth_header_cache_update(struct hh_cache *hh, const struct net_device *dev, const unsigned char *haddr); +extern int eth_prepare_mac_addr_change(struct net_device *dev, void *p); +extern void eth_commit_mac_addr_change(struct net_device *dev, void *p); extern int eth_mac_addr(struct net_device *dev, void *p); extern int eth_change_mtu(struct net_device *dev, int new_mtu); extern int eth_validate_addr(struct net_device *dev); -- cgit v1.2.3 From 6509141f9c2ba74df6cc72ec35cd1865276ae3a4 Mon Sep 17 00:00:00 2001 From: Wei Shuai Date: Mon, 21 Jan 2013 06:00:31 +0000 Subject: usbnet: add new flag FLAG_NOARP for usb net devices We do have some USB net devices, which cannot do ARP. so we can introduce a new flag FLAG_NOARP, then client drivers can easily handle this kind of devices Signed-off-by: Wei Shuai Signed-off-by: David S. Miller --- include/linux/usb/usbnet.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h index bd45eb7bedc8..5de7a220e986 100644 --- a/include/linux/usb/usbnet.h +++ b/include/linux/usb/usbnet.h @@ -100,6 +100,7 @@ struct driver_info { #define FLAG_LINK_INTR 0x0800 /* updates link (carrier) status */ #define FLAG_POINTTOPOINT 0x1000 /* possibly use "usb%d" names */ +#define FLAG_NOARP 0x2000 /* device can't do ARP */ /* * Indicates to usbnet, that USB driver accumulates multiple IP packets. -- cgit v1.2.3 From afe759511808cd5bb508b598007cf0c7b0ca8e08 Mon Sep 17 00:00:00 2001 From: Aaron Lu Date: Tue, 15 Jan 2013 17:20:58 +0800 Subject: libata: identify and init ZPODD devices The ODD can be enabled for ZPODD if the following three conditions are satisfied: 1 The ODD supports device attention; 2 The platform can runtime power off the ODD through ACPI; 3 The ODD is either slot type or drawer type. For such ODDs, zpodd_init is called and a new structure is allocated for it to store ZPODD related stuffs. And the zpodd_dev_enabled function is used to test if ZPODD is currently enabled for this ODD. A new config CONFIG_SATA_ZPODD is added to selectively build ZPODD code. Signed-off-by: Aaron Lu Acked-by: Tejun Heo Signed-off-by: Jeff Garzik --- include/linux/libata.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index 7ae207eb29a0..65ff67e34b77 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -620,6 +620,9 @@ struct ata_device { #ifdef CONFIG_ATA_ACPI union acpi_object *gtf_cache; unsigned int gtf_filter; +#endif +#ifdef CONFIG_SATA_ZPODD + void *zpodd; #endif struct device tdev; /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */ -- cgit v1.2.3 From b000c8065a92b0fe0e1694f41b2c8d8ba7b7b1ec Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Fri, 18 Jan 2013 10:31:20 -0500 Subject: tracing: Remove the extra 4 bytes of padding in events Due to a userspace issue with PowerTop v2beta, which hardcoded the offset of event fields that it was using, it broke when we removed the Big Kernel Lock counter from the event header. (commit e6e1e2593 "tracing: Remove lock_depth from event entry") Because this broke userspace, it was determined that we must keep those 4 bytes around. (commit a3a4a5acd "Regression: partial revert "tracing: Remove lock_depth from event entry"") This unfortunately wastes space in the ring buffer. 4 bytes per event, where a lot of events are just 24 bytes. That's 16% of the buffer wasted. A million events will add 4 megs of white space into the buffer. It was later noticed that PowerTop v2beta could not work on systems where the kernel was 64 bit but the userspace was 32 bits. The reason was because the offsets are different between the two and the hard coded offset of one would not work with the other. With PowerTop v2 final, it implemented the same interface that both perf and trace-cmd use. That is, it reads the format file of the event to find the offsets of the fields it needs. This fixes the problem with running powertop on a 32 bit userspace running on a 64 bit kernel. It also no longer requires the 4 byte padding. As PowerTop v2 has been out for a while, and is included in all major distributions, it is time that we can safely remove the 4 bytes of padding. Users of PowerTop v2beta should upgrade to PowerTop v2 final. Cc: Linus Torvalds Acked-by: Arjan van de Ven Signed-off-by: Steven Rostedt --- include/linux/ftrace_event.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index 43ef8b6cce7f..6f8d0b77006b 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h @@ -49,7 +49,6 @@ struct trace_entry { unsigned char flags; unsigned char preempt_count; int pid; - int padding; }; #define FTRACE_MAX_EVENT \ -- cgit v1.2.3 From 6a89a314ab107a12af08c71420c19a37a30fc2d3 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Fri, 18 Jan 2013 15:57:46 +0800 Subject: gpio: devm_gpio_* support should not depend on GPIOLIB Some architectures (e.g. blackfin) provide gpio API without requiring GPIOLIB support (ARCH_WANT_OPTIONAL_GPIOLIB). devm_gpio_* functions should also work for these architectures, since they do not really depend on GPIOLIB. Add a new option GPIO_DEVRES (enabled by default) to control the build of devres.c. It also removes the empty version of devm_gpio_* functions for !GENERIC_GPIO build from linux/gpio.h, and moves the function declarations from asm-generic/gpio.h into linux/gpio.h. Signed-off-by: Shawn Guo Signed-off-by: Linus Walleij --- include/linux/gpio.h | 28 ++++++++-------------------- 1 file changed, 8 insertions(+), 20 deletions(-) (limited to 'include/linux') diff --git a/include/linux/gpio.h b/include/linux/gpio.h index bfe665621536..f6c7ae3e223b 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -94,24 +94,12 @@ static inline int gpio_request(unsigned gpio, const char *label) return -ENOSYS; } -static inline int devm_gpio_request(struct device *dev, unsigned gpio, - const char *label) -{ - return -ENOSYS; -} - static inline int gpio_request_one(unsigned gpio, unsigned long flags, const char *label) { return -ENOSYS; } -static inline int devm_gpio_request_one(struct device *dev, unsigned gpio, - unsigned long flags, const char *label) -{ - return -ENOSYS; -} - static inline int gpio_request_array(const struct gpio *array, size_t num) { return -ENOSYS; @@ -125,14 +113,6 @@ static inline void gpio_free(unsigned gpio) WARN_ON(1); } -static inline void devm_gpio_free(struct device *dev, unsigned gpio) -{ - might_sleep(); - - /* GPIO can never have been requested */ - WARN_ON(1); -} - static inline void gpio_free_array(const struct gpio *array, size_t num) { might_sleep(); @@ -248,4 +228,12 @@ gpiochip_remove_pin_ranges(struct gpio_chip *chip) #endif /* ! CONFIG_GENERIC_GPIO */ +struct device; + +/* bindings for managed devices that want to request gpios */ +int devm_gpio_request(struct device *dev, unsigned gpio, const char *label); +int devm_gpio_request_one(struct device *dev, unsigned gpio, + unsigned long flags, const char *label); +void devm_gpio_free(struct device *dev, unsigned int gpio); + #endif /* __LINUX_GPIO_H */ -- cgit v1.2.3 From 00441b5e6b98ad6a50b5cb7f88d473e3ea1e0d75 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Wed, 9 Jan 2013 10:06:03 +0000 Subject: mfd: Fix compile errors and warnings when !CONFIG_AB8500_BM MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit drivers/mfd/ab8500-core.c:1015:21: error: ‘ab8500_bm_data’ undeclared here include/linux/mfd/abx500/ab8500-bm.h:445:13: warning: ‘ab8500_fg_reinit’ defined but not used include/linux/mfd/abx500/ab8500-bm.h:448:13: warning: ‘ab8500_charger_usb_state_changed’ defined but not used include/linux/mfd/abx500/ab8500-bm.h:451:29: warning: ‘ab8500_btemp_get’ defined but not used include/linux/mfd/abx500/ab8500-bm.h:455:12: warning: ‘ab8500_btemp_get_batctrl_temp’ defined but not used include/linux/mfd/abx500/ab8500-bm.h:463:12: warning: ‘ab8500_fg_inst_curr_blocking’ defined but not used include/linux/mfd/abx500/ab8500-bm.h:442:12: warning: ‘ab8500_fg_inst_curr_done’ defined but not used include/linux/mfd/abx500/ab8500-bm.h:447:26: warning: ‘ab8500_fg_get’ defined but not used Signed-off-by: Lee Jones Signed-off-by: Samuel Ortiz --- include/linux/mfd/abx500.h | 2 -- include/linux/mfd/abx500/ab8500-bm.h | 29 ++++------------------------- 2 files changed, 4 insertions(+), 27 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h index 2138bd33021a..e53dcfeaee69 100644 --- a/include/linux/mfd/abx500.h +++ b/include/linux/mfd/abx500.h @@ -272,8 +272,6 @@ struct abx500_bm_data { const struct abx500_fg_parameters *fg_params; }; -extern struct abx500_bm_data ab8500_bm_data; - enum { NTC_EXTERNAL = 0, NTC_INTERNAL, diff --git a/include/linux/mfd/abx500/ab8500-bm.h b/include/linux/mfd/abx500/ab8500-bm.h index 44310c98ee6e..9bd037df97d9 100644 --- a/include/linux/mfd/abx500/ab8500-bm.h +++ b/include/linux/mfd/abx500/ab8500-bm.h @@ -422,7 +422,10 @@ struct ab8500_chargalg_platform_data { struct ab8500_btemp; struct ab8500_gpadc; struct ab8500_fg; + #ifdef CONFIG_AB8500_BM +extern struct abx500_bm_data ab8500_bm_data; + void ab8500_fg_reinit(void); void ab8500_charger_usb_state_changed(u8 bm_usb_state, u16 mA); struct ab8500_btemp *ab8500_btemp_get(void); @@ -434,31 +437,7 @@ int ab8500_fg_inst_curr_finalize(struct ab8500_fg *di, int *res); int ab8500_fg_inst_curr_done(struct ab8500_fg *di); #else -int ab8500_fg_inst_curr_done(struct ab8500_fg *di) -{ -} -static void ab8500_fg_reinit(void) -{ -} -static void ab8500_charger_usb_state_changed(u8 bm_usb_state, u16 mA) -{ -} -static struct ab8500_btemp *ab8500_btemp_get(void) -{ - return NULL; -} -static int ab8500_btemp_get_batctrl_temp(struct ab8500_btemp *btemp) -{ - return 0; -} -struct ab8500_fg *ab8500_fg_get(void) -{ - return NULL; -} -static int ab8500_fg_inst_curr_blocking(struct ab8500_fg *dev) -{ - return -ENODEV; -} +static struct abx500_bm_data ab8500_bm_data; static inline int ab8500_fg_inst_curr_start(struct ab8500_fg *di) { -- cgit v1.2.3 From 910ffdb18a6408e14febbb6e4b6840fd2c928c82 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Mon, 21 Jan 2013 20:47:41 +0100 Subject: ptrace: introduce signal_wake_up_state() and ptrace_signal_wake_up() Cleanup and preparation for the next change. signal_wake_up(resume => true) is overused. None of ptrace/jctl callers actually want to wakeup a TASK_WAKEKILL task, but they can't specify the necessary mask. Turn signal_wake_up() into signal_wake_up_state(state), reintroduce signal_wake_up() as a trivial helper, and add ptrace_signal_wake_up() which adds __TASK_TRACED. This way ptrace_signal_wake_up() can work "inside" ptrace_request() even if the tracee doesn't have the TASK_WAKEKILL bit set. Signed-off-by: Oleg Nesterov Signed-off-by: Linus Torvalds --- include/linux/sched.h | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 6fc8f45de4e9..d2112477ff5e 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2714,7 +2714,16 @@ static inline void thread_group_cputime_init(struct signal_struct *sig) extern void recalc_sigpending_and_wake(struct task_struct *t); extern void recalc_sigpending(void); -extern void signal_wake_up(struct task_struct *t, int resume_stopped); +extern void signal_wake_up_state(struct task_struct *t, unsigned int state); + +static inline void signal_wake_up(struct task_struct *t, bool resume) +{ + signal_wake_up_state(t, resume ? TASK_WAKEKILL : 0); +} +static inline void ptrace_signal_wake_up(struct task_struct *t, bool resume) +{ + signal_wake_up_state(t, resume ? __TASK_TRACED : 0); +} /* * Wrappers for p->thread_info->cpu access. No-op on UP. -- cgit v1.2.3 From 75096579c3ac39ddc2f8b0d9a8924eba31f4d920 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Mon, 21 Jan 2013 11:08:54 +0100 Subject: lib: devres: Introduce devm_ioremap_resource() The devm_request_and_ioremap() function is very useful and helps avoid a whole lot of boilerplate. However, one issue that keeps popping up is its lack of a specific error code to determine which of the steps that it performs failed. Furthermore, while the function gives an example and suggests what error code to return on failure, a wide variety of error codes are used throughout the tree. In an attempt to fix these problems, this patch adds a new function that drivers can transition to. The devm_ioremap_resource() returns a pointer to the remapped I/O memory on success or an ERR_PTR() encoded error code on failure. Callers can check for failure using IS_ERR() and determine its cause by extracting the error code using PTR_ERR(). devm_request_and_ioremap() is implemented as a wrapper around the new API and return NULL on failure as before. This ensures that backwards compatibility is maintained until all users have been converted to the new API, at which point the old devm_request_and_ioremap() function should be removed. A semantic patch is included which can be used to convert from the old devm_request_and_ioremap() API to the new devm_ioremap_resource() API. Some non-trivial cases may require manual intervention, though. Signed-off-by: Thierry Reding Cc: Arnd Bergmann Acked-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman --- include/linux/device.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index 43dcda937ddf..251f33b21ef9 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -573,6 +573,7 @@ extern int devres_release_group(struct device *dev, void *id); extern void *devm_kzalloc(struct device *dev, size_t size, gfp_t gfp); extern void devm_kfree(struct device *dev, void *p); +void __iomem *devm_ioremap_resource(struct device *dev, struct resource *res); void __iomem *devm_request_and_ioremap(struct device *dev, struct resource *res); -- cgit v1.2.3 From 01ec8c5423901c4fe8d97f786ed9a0c31215b53a Mon Sep 17 00:00:00 2001 From: Michel JAOUEN Date: Thu, 26 Apr 2012 10:00:04 +0200 Subject: pm2301: Provide u9540 support for the pm2301 charger AC charger driver for the DB9540 based platforms. Signed-off-by: Rajkumar Kasirajan Signed-off-by: Loic Pallardy Signed-off-by: Lee Jones Reviewed-by: Michel JAOUEN Tested-by: Michel JAOUEN --- include/linux/mfd/abx500/ab8500-bm.h | 2 ++ include/linux/mfd/abx500/ux500_chargalg.h | 2 ++ include/linux/pm2301_charger.h | 60 +++++++++++++++++++++++++++++++ 3 files changed, 64 insertions(+) create mode 100644 include/linux/pm2301_charger.h (limited to 'include/linux') diff --git a/include/linux/mfd/abx500/ab8500-bm.h b/include/linux/mfd/abx500/ab8500-bm.h index e2a1e6d84f72..a03d4fdf9c2c 100644 --- a/include/linux/mfd/abx500/ab8500-bm.h +++ b/include/linux/mfd/abx500/ab8500-bm.h @@ -406,6 +406,8 @@ struct ab8500_charger_platform_data { char **supplied_to; size_t num_supplicants; bool autopower_cfg; + bool ac_enabled; + bool usb_enabled; }; struct ab8500_btemp_platform_data { diff --git a/include/linux/mfd/abx500/ux500_chargalg.h b/include/linux/mfd/abx500/ux500_chargalg.h index 9b07725750c9..5b77a610c6b6 100644 --- a/include/linux/mfd/abx500/ux500_chargalg.h +++ b/include/linux/mfd/abx500/ux500_chargalg.h @@ -27,12 +27,14 @@ struct ux500_charger_ops { * @ops ux500 charger operations * @max_out_volt maximum output charger voltage in mV * @max_out_curr maximum output charger current in mA + * @enabled indicates if this charger is used or not */ struct ux500_charger { struct power_supply psy; struct ux500_charger_ops ops; int max_out_volt; int max_out_curr; + bool enabled; }; #endif diff --git a/include/linux/pm2301_charger.h b/include/linux/pm2301_charger.h new file mode 100644 index 000000000000..16bb1d34b9d5 --- /dev/null +++ b/include/linux/pm2301_charger.h @@ -0,0 +1,60 @@ +/* + * PM2301 charger driver. + * + * Copyright (C) 2012 ST Ericsson Corporation + * + * Contact: Olivier LAUNAY (olivier.launay@stericsson.com + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + */ + +#ifndef __LINUX_PM2301_H +#define __LINUX_PM2301_H + +/** + * struct pm2xxx_bm_charger_parameters - Charger specific parameters + * @ac_volt_max: maximum allowed AC charger voltage in mV + * @ac_curr_max: maximum allowed AC charger current in mA + */ +struct pm2xxx_bm_charger_parameters { + int ac_volt_max; + int ac_curr_max; +}; + +/** + * struct pm2xxx_bm_data - pm2xxx battery management data + * @enable_overshoot flag to enable VBAT overshoot control + * @chg_params charger parameters + */ +struct pm2xxx_bm_data { + bool enable_overshoot; + const struct pm2xxx_bm_charger_parameters *chg_params; +}; + +struct pm2xxx_charger_platform_data { + char **supplied_to; + size_t num_supplicants; + int i2c_bus; + const char *label; + int irq_number; + int irq_type; +}; + +struct pm2xxx_platform_data { + struct pm2xxx_charger_platform_data *wall_charger; + struct pm2xxx_bm_data *battery; +}; + +#endif /* __LINUX_PM2301_H */ -- cgit v1.2.3 From e6aac611b86956bdd981f30e8862ee2ac8aaf664 Mon Sep 17 00:00:00 2001 From: Michel JAOUEN Date: Tue, 22 May 2012 15:46:46 +0200 Subject: ab8500-btemp: Adaptation to AB8505 and AB9540 platforms Add AB9540 and AB8505 support to ABx500 BTEMP driver. Signed-off-by: Rajkumar Kasirajan Signed-off-by: Lee Jones Reviewed-by: Michel JAOUEN Reviewed-by: Marcus COOPER Reviewed-by: Jonas ABERG Tested-by: Michel JAOUEN Tested-by: Jonas ABERG --- include/linux/mfd/abx500/ab8500-bm.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500/ab8500-bm.h b/include/linux/mfd/abx500/ab8500-bm.h index a03d4fdf9c2c..ec796c700e4c 100644 --- a/include/linux/mfd/abx500/ab8500-bm.h +++ b/include/linux/mfd/abx500/ab8500-bm.h @@ -226,6 +226,8 @@ /* BatCtrl Current Source Constants */ #define BAT_CTRL_7U_ENA 0x01 #define BAT_CTRL_20U_ENA 0x02 +#define BAT_CTRL_18U_ENA 0x01 +#define BAT_CTRL_16U_ENA 0x02 #define BAT_CTRL_CMP_ENA 0x04 #define FORCE_BAT_CTRL_CMP_HIGH 0x08 #define BAT_CTRL_PULL_UP_ENA 0x10 -- cgit v1.2.3 From b506eebc504caaf863b5c5a68a1e1d304d610482 Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Tue, 22 Jan 2013 18:30:40 +0530 Subject: ARM: EXYNOS: Update & move usb-phy types to generic include layer Updating the names of usb-phy types to more generic names: USB_PHY_TYPE_DEIVCE & USB_PHY_TYPE_HOST; and further update its dependencies. Signed-off-by: Praveen Paneri Signed-off-by: Vivek Gautam Acked-by: Kukjin Kim Signed-off-by: Felipe Balbi --- include/linux/usb/samsung_usb_phy.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 include/linux/usb/samsung_usb_phy.h (limited to 'include/linux') diff --git a/include/linux/usb/samsung_usb_phy.h b/include/linux/usb/samsung_usb_phy.h new file mode 100644 index 000000000000..916782699f1c --- /dev/null +++ b/include/linux/usb/samsung_usb_phy.h @@ -0,0 +1,16 @@ +/* + * Copyright (C) 2012 Samsung Electronics Co.Ltd + * http://www.samsung.com/ + * + * Defines phy types for samsung usb phy controllers - HOST or DEIVCE. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +enum samsung_usb_phy_type { + USB_PHY_TYPE_DEVICE, + USB_PHY_TYPE_HOST, +}; -- cgit v1.2.3 From e07a56453b14b929cf01bf032cc3e3220094609c Mon Sep 17 00:00:00 2001 From: Loic Pallardy Date: Thu, 10 May 2012 15:33:56 +0200 Subject: pm2301: Update watchdog for pm2xxx support AB and PMxxx doesn't have same watchdog refresh period. Add watchdog to refresh period parameters in x500 charger structure, this should kick watchdog every 30sec. The AC charging should also kick both pm2xxx and the AB charger watchdog. Signed-off-by: Rajkumar Kasirajan Signed-off-by: Loic Pallardy Signed-off-by: Lee Jones Reviewed-by: Michel JAOUEN Reviewed-by: Marcus COOPER Reviewed-by: Jonas ABERG Tested-by: Michel JAOUEN Tested-by: Jonas ABERG --- include/linux/mfd/abx500/ux500_chargalg.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500/ux500_chargalg.h b/include/linux/mfd/abx500/ux500_chargalg.h index 5b77a610c6b6..d43ac0f35526 100644 --- a/include/linux/mfd/abx500/ux500_chargalg.h +++ b/include/linux/mfd/abx500/ux500_chargalg.h @@ -28,13 +28,16 @@ struct ux500_charger_ops { * @max_out_volt maximum output charger voltage in mV * @max_out_curr maximum output charger current in mA * @enabled indicates if this charger is used or not + * @external external charger unit (pm2xxx) */ struct ux500_charger { struct power_supply psy; struct ux500_charger_ops ops; int max_out_volt; int max_out_curr; + int wdt_refresh; bool enabled; + bool external; }; #endif -- cgit v1.2.3 From 3988043b0ee1104d4cca7c57bbc23b16ea798b6f Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Wed, 23 Jan 2013 14:38:15 +0000 Subject: pm2301: LPN mode control support The AC charger plug-in detection while booting causes I2C read failure if AC charger is not connected. Now the LPN pin is enabled for every PM2301 register access, which solves the issue. Signed-off-by: Rupesh Kumar Signed-off-by: Lee Jones Reviewed-by: Marcus COOPER Reviewed-by: Vijaya Kumar K-1 Reviewed-by: Rabin VINCENT Reviewed-by: Jonas ABERG Tested-by: Jonas ABERG --- include/linux/pm2301_charger.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pm2301_charger.h b/include/linux/pm2301_charger.h index 16bb1d34b9d5..fc3f026922ae 100644 --- a/include/linux/pm2301_charger.h +++ b/include/linux/pm2301_charger.h @@ -49,6 +49,7 @@ struct pm2xxx_charger_platform_data { int i2c_bus; const char *label; int irq_number; + unsigned int lpn_gpio; int irq_type; }; -- cgit v1.2.3 From 0ed5107fa86013c91b1752230d44b79dffee0cda Mon Sep 17 00:00:00 2001 From: Jonas Aaberg Date: Fri, 11 May 2012 12:42:25 +0200 Subject: ab8500-charger: Do not touch VBUSOVV bits Do not touch the VBUSOVV in USBCHTRL2 when running on AB8505. Signed-off-by: Jonas Aaberg Signed-off-by: Lee Jones Reviewed-by: Marcus COOPER Tested-by: Mian Yousaf KAUKAB --- include/linux/mfd/abx500/ab8500.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500/ab8500.h b/include/linux/mfd/abx500/ab8500.h index 9dd9b99099df..b9a6a847ff61 100644 --- a/include/linux/mfd/abx500/ab8500.h +++ b/include/linux/mfd/abx500/ab8500.h @@ -346,4 +346,23 @@ static inline int is_ab8500_2p0(struct ab8500 *ab) return (is_ab8500(ab) && (ab->chip_id == AB8500_CUT2P0)); } +static inline int is_ab8505_1p0_or_earlier(struct ab8500 *ab) +{ + return (is_ab8505(ab) && (ab->chip_id <= AB8500_CUT1P0)); +} + +static inline int is_ab8505_2p0(struct ab8500 *ab) +{ + return (is_ab8505(ab) && (ab->chip_id == AB8500_CUT2P0)); +} + +static inline int is_ab9540_1p0_or_earlier(struct ab8500 *ab) +{ + return (is_ab9540(ab) && (ab->chip_id <= AB8500_CUT1P0)); +} + +static inline int is_ab9540_2p0(struct ab8500 *ab) +{ + return (is_ab9540(ab) && (ab->chip_id == AB8500_CUT2P0)); +} #endif /* MFD_AB8500_H */ -- cgit v1.2.3 From 97034a1e042d4316a83a3f68d61edf6c42e3f265 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Thu, 17 Jan 2013 16:08:42 +0000 Subject: ab8500-bm: Remove individual [charger|btemp|fg|chargalg] pdata structures None of the aforementioned components have their own dedicated platform data structures anymore. Instead they have all been merged into one big Battery Management container. Let's remove them and place all the nice newly added attributes into the core container. Signed-off-by: Lee Jones --- include/linux/mfd/abx500.h | 3 +++ include/linux/mfd/abx500/ab8500-bm.h | 22 ---------------------- 2 files changed, 3 insertions(+), 22 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h index 0e6e90badfca..1beaa056f195 100644 --- a/include/linux/mfd/abx500.h +++ b/include/linux/mfd/abx500.h @@ -254,6 +254,9 @@ struct abx500_bm_data { int usb_safety_tmr_h; int bkup_bat_v; int bkup_bat_i; + bool autopower_cfg; + bool ac_enabled; + bool usb_enabled; bool no_maintenance; bool capacity_scaling; bool chg_unknown_bat; diff --git a/include/linux/mfd/abx500/ab8500-bm.h b/include/linux/mfd/abx500/ab8500-bm.h index ec796c700e4c..345bc159f978 100644 --- a/include/linux/mfd/abx500/ab8500-bm.h +++ b/include/linux/mfd/abx500/ab8500-bm.h @@ -404,28 +404,6 @@ struct ab8500_bm_data { const struct ab8500_fg_parameters *fg_params; }; -struct ab8500_charger_platform_data { - char **supplied_to; - size_t num_supplicants; - bool autopower_cfg; - bool ac_enabled; - bool usb_enabled; -}; - -struct ab8500_btemp_platform_data { - char **supplied_to; - size_t num_supplicants; -}; - -struct ab8500_fg_platform_data { - char **supplied_to; - size_t num_supplicants; -}; - -struct ab8500_chargalg_platform_data { - char **supplied_to; - size_t num_supplicants; -}; struct ab8500_btemp; struct ab8500_gpadc; struct ab8500_fg; -- cgit v1.2.3 From ab78029ecc347debbd737f06688d788bd9d60c1d Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 22 Jan 2013 10:56:14 -0700 Subject: drivers/pinctrl: grab default handles from device core This makes the device core auto-grab the pinctrl handle and set the "default" (PINCTRL_STATE_DEFAULT) state for every device that is present in the device model right before probe. This will account for the lion's share of embedded silicon devcies. A modification of the semantics for pinctrl_get() is also done: previously if the pinctrl handle for a certain device was already taken, the pinctrl core would return an error. Now, since the core may have already default-grabbed the handle and set its state to "default", if the handle was already taken, this will be disregarded and the located, previously instanitated handle will be returned to the caller. This way all code in drivers explicitly requesting their pinctrl handlers will still be functional, and drivers that want to explicitly retrieve and switch their handles can still do that. But if the desired functionality is just boilerplate of this type in the probe() function: struct pinctrl *p; p = devm_pinctrl_get_select_default(&dev); if (IS_ERR(p)) { if (PTR_ERR(p) == -EPROBE_DEFER) return -EPROBE_DEFER; dev_warn(&dev, "no pinctrl handle\n"); } The discussion began with the addition of such boilerplate to the omap4 keypad driver: http://marc.info/?l=linux-input&m=135091157719300&w=2 A previous approach using notifiers was discussed: http://marc.info/?l=linux-kernel&m=135263661110528&w=2 This failed because it could not handle deferred probes. This patch alone does not solve the entire dilemma faced: whether code should be distributed into the drivers or if it should be centralized to e.g. a PM domain. But it solves the immediate issue of the addition of boilerplate to a lot of drivers that just want to grab the default state. As mentioned, they can later explicitly retrieve the handle and set different states, and this could as well be done by e.g. PM domains as it is only related to a certain struct device * pointer. ChangeLog v4->v5 (Stephen): - Simplified the devicecore grab code. - Deleted a piece of documentation recommending that pins be mapped to a device rather than hogged. ChangeLog v3->v4 (Linus): - Drop overzealous NULL checks. - Move kref initialization to pinctrl_create(). - Seeking Tested-by from Stephen Warren so we do not disturb the Tegra platform. - Seeking ACK on this from Greg (and others who like it) so I can merge it through the pinctrl subsystem. ChangeLog v2->v3 (Linus): - Abstain from using IS_ERR_OR_NULL() in the driver core, Russell recently sent a patch to remove it. Handle the NULL case explicitly even though it's a bogus case. - Make sure we handle probe deferral correctly in the device core file. devm_kfree() the container on error so we don't waste memory for devices without pinctrl handles. - Introduce reference counting into the pinctrl core using so that we don't release pinctrl handles that have been obtained for two or more places. ChangeLog v1->v2 (Linus): - Only store a pointer in the device struct, and only allocate this if it's really used by the device. Cc: Felipe Balbi Cc: Benoit Cousson Cc: Dmitry Torokhov Cc: Thomas Petazzoni Cc: Mitch Bradley Cc: Ulf Hansson Cc: Rafael J. Wysocki Cc: Jean-Christophe PLAGNIOL-VILLARD Cc: Rickard Andersson Cc: Russell King Reviewed-by: Mark Brown Acked-by: Greg Kroah-Hartman Signed-off-by: Linus Walleij [swarren: fixed and simplified error-handling in pinctrl_bind_pins(), to correctly handle deferred probe. Removed admonition from docs not to use pinctrl hogs for devices] Signed-off-by: Stephen Warren Signed-off-by: Linus Walleij --- include/linux/device.h | 7 +++++++ include/linux/pinctrl/devinfo.h | 45 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 52 insertions(+) create mode 100644 include/linux/pinctrl/devinfo.h (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index 43dcda937ddf..001f6637aa47 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include @@ -620,6 +621,8 @@ struct acpi_dev_node { * @pm_domain: Provide callbacks that are executed during system suspend, * hibernation, system resume and during runtime PM transitions * along with subsystem-level and driver-level callbacks. + * @pins: For device pin management. + * See Documentation/pinctrl.txt for details. * @numa_node: NUMA node this device is close to. * @dma_mask: Dma mask (if dma'ble device). * @coherent_dma_mask: Like dma_mask, but for alloc_coherent mapping as not all @@ -672,6 +675,10 @@ struct device { struct dev_pm_info power; struct dev_pm_domain *pm_domain; +#ifdef CONFIG_PINCTRL + struct dev_pin_info *pins; +#endif + #ifdef CONFIG_NUMA int numa_node; /* NUMA node this device is close to */ #endif diff --git a/include/linux/pinctrl/devinfo.h b/include/linux/pinctrl/devinfo.h new file mode 100644 index 000000000000..6e5f8a985ea7 --- /dev/null +++ b/include/linux/pinctrl/devinfo.h @@ -0,0 +1,45 @@ +/* + * Per-device information from the pin control system. + * This is the stuff that get included into the device + * core. + * + * Copyright (C) 2012 ST-Ericsson SA + * Written on behalf of Linaro for ST-Ericsson + * This interface is used in the core to keep track of pins. + * + * Author: Linus Walleij + * + * License terms: GNU General Public License (GPL) version 2 + */ + +#ifndef PINCTRL_DEVINFO_H +#define PINCTRL_DEVINFO_H + +#ifdef CONFIG_PINCTRL + +/* The device core acts as a consumer toward pinctrl */ +#include + +/** + * struct dev_pin_info - pin state container for devices + * @p: pinctrl handle for the containing device + * @default_state: the default state for the handle, if found + */ +struct dev_pin_info { + struct pinctrl *p; + struct pinctrl_state *default_state; +}; + +extern int pinctrl_bind_pins(struct device *dev); + +#else + +/* Stubs if we're not using pinctrl */ + +static inline int pinctrl_bind_pins(struct device *dev) +{ + return 0; +} + +#endif /* CONFIG_PINCTRL */ +#endif /* PINCTRL_DEVINFO_H */ -- cgit v1.2.3 From 8723d5037cafea09c7242303c6c8e5d7058cec61 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 23 Jan 2013 09:32:30 -0800 Subject: async: bring sanity to the use of words domain and running In the beginning, running lists were literal struct list_heads. Later on, struct async_domain was added. For some reason, while the conversion substituted list_heads with async_domains, the variable names weren't fully converted. In more places, "running" was used for struct async_domain while other places adopted new "domain" name. The situation is made much worse by having async_domain's running list named "domain" and async_entry's field pointing to async_domain named "running". So, we end up with mix of "running" and "domain" for variable names for async_domain, with the field names of async_domain and async_entry swapped between "running" and "domain". It feels almost intentionally made to be as confusing as possible. Bring some sanity by * Renaming all async_domain variables "domain". * s/async_running/async_dfl_domain/ * s/async_domain->domain/async_domain->running/ * s/async_entry->running/async_entry->domain/ Signed-off-by: Tejun Heo Cc: Arjan van de Ven Cc: Dan Williams Cc: Linus Torvalds --- include/linux/async.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/async.h b/include/linux/async.h index 345169cfa304..34ff5c610e0e 100644 --- a/include/linux/async.h +++ b/include/linux/async.h @@ -19,7 +19,7 @@ typedef u64 async_cookie_t; typedef void (async_func_ptr) (void *data, async_cookie_t cookie); struct async_domain { struct list_head node; - struct list_head domain; + struct list_head running; int count; unsigned registered:1; }; @@ -29,7 +29,7 @@ struct async_domain { */ #define ASYNC_DOMAIN(_name) \ struct async_domain _name = { .node = LIST_HEAD_INIT(_name.node), \ - .domain = LIST_HEAD_INIT(_name.domain), \ + .running = LIST_HEAD_INIT(_name.running), \ .count = 0, \ .registered = 1 } @@ -39,7 +39,7 @@ struct async_domain { */ #define ASYNC_DOMAIN_EXCLUSIVE(_name) \ struct async_domain _name = { .node = LIST_HEAD_INIT(_name.node), \ - .domain = LIST_HEAD_INIT(_name.domain), \ + .running = LIST_HEAD_INIT(_name.running), \ .count = 0, \ .registered = 0 } -- cgit v1.2.3 From 52722794d6a48162fd8906d54618ae60a4abdb21 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 23 Jan 2013 09:32:30 -0800 Subject: async: keep pending tasks on async_domain and remove async_pending Async kept single global pending list and per-domain running lists. When an async item is queued, it's put on the global pending list. The item is moved to the per-domain running list when its execution starts. At this point, this design complicates execution and synchronization without bringing any benefit. The list only matters for synchronization which doesn't care whether a given async item is pending or executing. Also, global synchronization is done by iterating through all active registered async_domains, so the global async_pending list doesn't help anything either. Rename async_domain->running to async_domain->pending and put async items directly there and remove when execution completes. This simplifies lowest_in_progress() a lot - the first item on the pending list is the one with the lowest cookie, and async_run_entry_fn() doesn't have to mess with moving the item from pending to running. After the change, whether a domain is empty or not can be trivially determined by looking at async_domain->pending. Remove async_domain->count and use list_empty() on pending instead. Signed-off-by: Tejun Heo Cc: Arjan van de Ven Cc: Dan Williams Cc: Linus Torvalds --- include/linux/async.h | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/async.h b/include/linux/async.h index 34ff5c610e0e..a2e3f18b2ad6 100644 --- a/include/linux/async.h +++ b/include/linux/async.h @@ -19,8 +19,7 @@ typedef u64 async_cookie_t; typedef void (async_func_ptr) (void *data, async_cookie_t cookie); struct async_domain { struct list_head node; - struct list_head running; - int count; + struct list_head pending; unsigned registered:1; }; @@ -29,8 +28,7 @@ struct async_domain { */ #define ASYNC_DOMAIN(_name) \ struct async_domain _name = { .node = LIST_HEAD_INIT(_name.node), \ - .running = LIST_HEAD_INIT(_name.running), \ - .count = 0, \ + .pending = LIST_HEAD_INIT(_name.pending), \ .registered = 1 } /* @@ -39,8 +37,7 @@ struct async_domain { */ #define ASYNC_DOMAIN_EXCLUSIVE(_name) \ struct async_domain _name = { .node = LIST_HEAD_INIT(_name.node), \ - .running = LIST_HEAD_INIT(_name.running), \ - .count = 0, \ + .pending = LIST_HEAD_INIT(_name.pending), \ .registered = 0 } extern async_cookie_t async_schedule(async_func_ptr *ptr, void *data); -- cgit v1.2.3 From 055dc21a1d1d219608cd4baac7d0683fb2cbbe8a Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Tue, 22 Jan 2013 09:49:50 +0000 Subject: soreuseport: infrastructure Definitions and macros for implementing soreusport. Signed-off-by: Tom Herbert Signed-off-by: David S. Miller --- include/linux/random.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/random.h b/include/linux/random.h index d9846088c2c5..347ce553a306 100644 --- a/include/linux/random.h +++ b/include/linux/random.h @@ -74,4 +74,10 @@ static inline int arch_get_random_int(unsigned int *v) } #endif +/* Pseudo random number generator from numerical recipes. */ +static inline u32 next_pseudo_random32(u32 seed) +{ + return seed * 1664525 + 1013904223; +} + #endif /* _LINUX_RANDOM_H */ -- cgit v1.2.3 From 35525b79786b2ba58ef13822198ce22c497bc7a2 Mon Sep 17 00:00:00 2001 From: Andriy Skulysh Date: Mon, 7 Jan 2013 00:12:15 +0200 Subject: sunrpc: Fix lockd sleeping until timeout There is a race in enqueueing thread to a pool and waking up a thread. lockd doesn't wake up on reception of lock granted callback if svc_wake_up() is called before lockd's thread is added to a pool. Signed-off-by: Andriy Skulysh Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/svc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index 676ddf53b3ee..1f0216b9a6c9 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -50,6 +50,7 @@ struct svc_pool { unsigned int sp_nrthreads; /* # of threads in pool */ struct list_head sp_all_threads; /* all server threads */ struct svc_pool_stats sp_stats; /* statistics on pool operation */ + int sp_task_pending;/* has pending task */ } ____cacheline_aligned_in_smp; /* -- cgit v1.2.3 From 2db54c72395298a58f29c75ae880be9e478fdbbd Mon Sep 17 00:00:00 2001 From: Steffen Trumtrar Date: Wed, 14 Nov 2012 10:55:04 +0100 Subject: fbmon: add videomode helpers Add a function to convert from the generic videomode to a fb_videomode. Signed-off-by: Steffen Trumtrar Reviewed-by: Thierry Reding Acked-by: Thierry Reding Tested-by: Thierry Reding Tested-by: Philipp Zabel Reviewed-by: Laurent Pinchart Acked-by: Laurent Pinchart Tested-by: Afzal Mohammed Tested-by: Rob Clark Tested-by: Leela Krishna Amudala --- include/linux/fb.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fb.h b/include/linux/fb.h index c7a95714b1fe..100a1765b787 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -19,6 +19,7 @@ struct vm_area_struct; struct fb_info; struct device; struct file; +struct videomode; /* Definitions below are used in the parsed monitor specs */ #define FB_DPMS_ACTIVE_OFF 1 @@ -714,6 +715,9 @@ extern void fb_destroy_modedb(struct fb_videomode *modedb); extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb); extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter); +extern int fb_videomode_from_videomode(const struct videomode *vm, + struct fb_videomode *fbmode); + /* drivers/video/modedb.c */ #define VESA_MODEDB_SIZE 34 extern void fb_var_to_videomode(struct fb_videomode *mode, -- cgit v1.2.3 From 790890444f591145d3a00623af461c9006e17d51 Mon Sep 17 00:00:00 2001 From: Steffen Trumtrar Date: Wed, 14 Nov 2012 11:12:38 +0100 Subject: fbmon: add of_videomode helpers Add helper to get fb_videomode from devicetree. Signed-off-by: Steffen Trumtrar Reviewed-by: Thierry Reding Acked-by: Thierry Reding Tested-by: Thierry Reding Tested-by: Philipp Zabel Reviewed-by: Laurent Pinchart Acked-by: Laurent Pinchart Tested-by: Afzal Mohammed Tested-by: Rob Clark Tested-by: Leela Krishna Amudala --- include/linux/fb.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fb.h b/include/linux/fb.h index 100a1765b787..58b98606ac26 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -20,6 +20,7 @@ struct fb_info; struct device; struct file; struct videomode; +struct device_node; /* Definitions below are used in the parsed monitor specs */ #define FB_DPMS_ACTIVE_OFF 1 @@ -715,6 +716,9 @@ extern void fb_destroy_modedb(struct fb_videomode *modedb); extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb); extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter); +extern int of_get_fb_videomode(struct device_node *np, + struct fb_videomode *fb, + int index); extern int fb_videomode_from_videomode(const struct videomode *vm, struct fb_videomode *fbmode); -- cgit v1.2.3 From ba6fdda46b377034c782c0b89c8f1090b31eabd8 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Sat, 22 Dec 2012 16:59:51 +0100 Subject: profiling: Remove unused timer hook The last remaining user was oprofile and its use has been removed a while ago in commit bc078e4eab65f11bba ("oprofile: convert oprofile from timer_hook to hrtimer"). There doesn't seem to be any upstream user of this hook for about two years now. And I'm not even aware of any out of tree user. Let's remove it. Signed-off-by: Frederic Weisbecker Cc: Alessio Igor Bogani Cc: Avi Kivity Cc: Chris Metcalf Cc: Christoph Lameter Cc: Geoff Levand Cc: Gilad Ben Yossef Cc: Hakan Akkan Cc: Paul E. McKenney Cc: Paul Gortmaker Cc: Peter Zijlstra Cc: Steven Rostedt Link: http://lkml.kernel.org/r/1356191991-2251-1-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar --- include/linux/profile.h | 13 ------------- 1 file changed, 13 deletions(-) (limited to 'include/linux') diff --git a/include/linux/profile.h b/include/linux/profile.h index a0fc32279fc0..21123902366d 100644 --- a/include/linux/profile.h +++ b/include/linux/profile.h @@ -82,9 +82,6 @@ int task_handoff_unregister(struct notifier_block * n); int profile_event_register(enum profile_type, struct notifier_block * n); int profile_event_unregister(enum profile_type, struct notifier_block * n); -int register_timer_hook(int (*hook)(struct pt_regs *)); -void unregister_timer_hook(int (*hook)(struct pt_regs *)); - struct pt_regs; #else @@ -135,16 +132,6 @@ static inline int profile_event_unregister(enum profile_type t, struct notifier_ #define profile_handoff_task(a) (0) #define profile_munmap(a) do { } while (0) -static inline int register_timer_hook(int (*hook)(struct pt_regs *)) -{ - return -ENOSYS; -} - -static inline void unregister_timer_hook(int (*hook)(struct pt_regs *)) -{ - return; -} - #endif /* CONFIG_PROFILING */ #endif /* _LINUX_PROFILE_H */ -- cgit v1.2.3 From d437c86baacf265a640dfc462c75941d02c0e153 Mon Sep 17 00:00:00 2001 From: Bing Zhao Date: Wed, 23 Jan 2013 20:33:58 -0800 Subject: ieee80211: define AKM suite selectors type 5, 6 and 7 Reference: IEEE 802.11-2012 8.4.2.27.3 "AKM suites" Signed-off-by: Bing Zhao Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index ccf9ee1dca8c..11c8bc87fdcb 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -1898,7 +1898,10 @@ enum ieee80211_sa_query_action { /* AKM suite selectors */ #define WLAN_AKM_SUITE_8021X 0x000FAC01 #define WLAN_AKM_SUITE_PSK 0x000FAC02 -#define WLAN_AKM_SUITE_SAE 0x000FAC08 +#define WLAN_AKM_SUITE_8021X_SHA256 0x000FAC05 +#define WLAN_AKM_SUITE_PSK_SHA256 0x000FAC06 +#define WLAN_AKM_SUITE_TDLS 0x000FAC07 +#define WLAN_AKM_SUITE_SAE 0x000FAC08 #define WLAN_AKM_SUITE_FT_OVER_SAE 0x000FAC09 #define WLAN_MAX_KEY_LEN 32 -- cgit v1.2.3 From d28574e043e8b7cb35482de6e9a553118a32803d Mon Sep 17 00:00:00 2001 From: Maxim Patlasov Date: Fri, 26 Oct 2012 19:50:04 +0400 Subject: mm: minor cleanup of iov_iter_single_seg_count() The function does not modify iov_iter which 'i' points to. Signed-off-by: Maxim Patlasov Signed-off-by: Miklos Szeredi --- include/linux/fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 7617ee04f066..7d2e893ec3d1 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -301,7 +301,7 @@ size_t iov_iter_copy_from_user(struct page *page, struct iov_iter *i, unsigned long offset, size_t bytes); void iov_iter_advance(struct iov_iter *i, size_t bytes); int iov_iter_fault_in_readable(struct iov_iter *i, size_t bytes); -size_t iov_iter_single_seg_count(struct iov_iter *i); +size_t iov_iter_single_seg_count(const struct iov_iter *i); static inline void iov_iter_init(struct iov_iter *i, const struct iovec *iov, unsigned long nr_segs, -- cgit v1.2.3 From 51906e779f2b13b38f8153774c4c7163d412ffd9 Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Mon, 19 Nov 2012 16:01:29 +0100 Subject: x86/MSI: Support multiple MSIs in presense of IRQ remapping The MSI specification has several constraints in comparison with MSI-X, most notable of them is the inability to configure MSIs independently. As a result, it is impossible to dispatch interrupts from different queues to different CPUs. This is largely devalues the support of multiple MSIs in SMP systems. Also, a necessity to allocate a contiguous block of vector numbers for devices capable of multiple MSIs might cause a considerable pressure on x86 interrupt vector allocator and could lead to fragmentation of the interrupt vectors space. This patch overcomes both drawbacks in presense of IRQ remapping and lets devices take advantage of multiple queues and per-IRQ affinity assignments. Signed-off-by: Alexander Gordeev Cc: Bjorn Helgaas Cc: Suresh Siddha Cc: Yinghai Lu Cc: Matthew Wilcox Cc: Jeff Garzik Cc: Linus Torvalds Cc: Andrew Morton Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/c8bd86ff56b5fc118257436768aaa04489ac0a4c.1353324359.git.agordeev@redhat.com Signed-off-by: Ingo Molnar --- include/linux/irq.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index fdf2c4a238cc..1eab99111e94 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -528,6 +528,8 @@ extern int irq_set_handler_data(unsigned int irq, void *data); extern int irq_set_chip_data(unsigned int irq, void *data); extern int irq_set_irq_type(unsigned int irq, unsigned int type); extern int irq_set_msi_desc(unsigned int irq, struct msi_desc *entry); +extern int irq_set_msi_desc_off(unsigned int irq_base, unsigned int irq_offset, + struct msi_desc *entry); extern struct irq_data *irq_get_irq_data(unsigned int irq); static inline struct irq_chip *irq_get_chip(unsigned int irq) @@ -590,6 +592,9 @@ int __irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node, #define irq_alloc_desc_from(from, node) \ irq_alloc_descs(-1, from, 1, node) +#define irq_alloc_descs_from(from, cnt, node) \ + irq_alloc_descs(-1, from, cnt, node) + void irq_free_descs(unsigned int irq, unsigned int cnt); int irq_reserve_irqs(unsigned int from, unsigned int cnt); -- cgit v1.2.3 From 08261d87f7d1b6253ab3223756625a5c74532293 Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Mon, 19 Nov 2012 16:02:10 +0100 Subject: PCI/MSI: Enable multiple MSIs with pci_enable_msi_block_auto() The new function pci_enable_msi_block_auto() tries to allocate maximum possible number of MSIs up to the number the device supports. It generalizes a pattern when pci_enable_msi_block() is contiguously called until it succeeds or fails. Opposite to pci_enable_msi_block() which takes the number of MSIs to allocate as a input parameter, pci_enable_msi_block_auto() could be used by device drivers to obtain the number of assigned MSIs and the number of MSIs the device supports. Signed-off-by: Alexander Gordeev Acked-by: Bjorn Helgaas Cc: Suresh Siddha Cc: Yinghai Lu Cc: Matthew Wilcox Cc: Jeff Garzik Cc: Linus Torvalds Cc: Andrew Morton Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/c3de2419df94a0f95ca1a6f755afc421486455e6.1353324359.git.agordeev@redhat.com Signed-off-by: Ingo Molnar --- include/linux/pci.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 15472d691ee6..6fa4dd2a3b9e 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1101,6 +1101,12 @@ static inline int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec) return -1; } +static inline int +pci_enable_msi_block_auto(struct pci_dev *dev, unsigned int *maxvec) +{ + return -1; +} + static inline void pci_msi_shutdown(struct pci_dev *dev) { } static inline void pci_disable_msi(struct pci_dev *dev) @@ -1132,6 +1138,7 @@ static inline int pci_msi_enabled(void) } #else extern int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec); +extern int pci_enable_msi_block_auto(struct pci_dev *dev, unsigned int *maxvec); extern void pci_msi_shutdown(struct pci_dev *dev); extern void pci_disable_msi(struct pci_dev *dev); extern int pci_msix_table_size(struct pci_dev *dev); -- cgit v1.2.3 From e2905b29122173b72b612c962b138e3fa07476b8 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 24 Jan 2013 11:01:32 -0800 Subject: workqueue: unexport work_cpu() This function no longer has any external users. Unexport it. It will be removed later on. Signed-off-by: Tejun Heo Reviewed-by: Lai Jiangshan --- include/linux/workqueue.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h index 2b58905d3504..ff68b1d95b41 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -426,7 +426,6 @@ extern bool cancel_delayed_work_sync(struct delayed_work *dwork); extern void workqueue_set_max_active(struct workqueue_struct *wq, int max_active); extern bool workqueue_congested(unsigned int cpu, struct workqueue_struct *wq); -extern unsigned int work_cpu(struct work_struct *work); extern unsigned int work_busy(struct work_struct *work); /* -- cgit v1.2.3 From 715b06b864c99a18cb8368dfb187da4f569788cd Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 24 Jan 2013 11:01:33 -0800 Subject: workqueue: introduce WORK_OFFQ_CPU_NONE Currently, when a work item is off queue, high bits of its data encodes the last CPU it was on. This is scheduled to be changed to pool ID, which will make it impossible to use WORK_CPU_NONE to indicate no association. This patch limits the number of bits which are used for off-queue cpu number to 31 (so that the max fits in an int) and uses the highest possible value - WORK_OFFQ_CPU_NONE - to indicate no association. Signed-off-by: Tejun Heo Reviewed-by: Lai Jiangshan --- include/linux/workqueue.h | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h index ff68b1d95b41..f8b35763e55f 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -73,13 +73,21 @@ enum { WORK_OFFQ_CANCELING = (1 << WORK_OFFQ_FLAG_BASE), + /* + * When a work item is off queue, its high bits point to the last + * cpu it was on. Cap at 31 bits and use the highest number to + * indicate that no cpu is associated. + */ WORK_OFFQ_FLAG_BITS = 1, WORK_OFFQ_CPU_SHIFT = WORK_OFFQ_FLAG_BASE + WORK_OFFQ_FLAG_BITS, + WORK_OFFQ_LEFT = BITS_PER_LONG - WORK_OFFQ_CPU_SHIFT, + WORK_OFFQ_CPU_BITS = WORK_OFFQ_LEFT <= 31 ? WORK_OFFQ_LEFT : 31, + WORK_OFFQ_CPU_NONE = (1LU << WORK_OFFQ_CPU_BITS) - 1, /* convenience constants */ WORK_STRUCT_FLAG_MASK = (1UL << WORK_STRUCT_FLAG_BITS) - 1, WORK_STRUCT_WQ_DATA_MASK = ~WORK_STRUCT_FLAG_MASK, - WORK_STRUCT_NO_CPU = (unsigned long)WORK_CPU_NONE << WORK_OFFQ_CPU_SHIFT, + WORK_STRUCT_NO_CPU = (unsigned long)WORK_OFFQ_CPU_NONE << WORK_OFFQ_CPU_SHIFT, /* bit mask for work_busy() return values */ WORK_BUSY_PENDING = 1 << 0, -- cgit v1.2.3 From 7c3eed5cd60d0f736516e6ade77d90c6255860bd Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 24 Jan 2013 11:01:33 -0800 Subject: workqueue: record pool ID instead of CPU in work->data when off-queue Currently, when a work item is off-queue, work->data records the CPU it was last on, which is used to locate the last executing instance for non-reentrance, flushing, etc. We're in the process of removing global_cwq and making worker_pool the top level abstraction. This patch makes work->data point to the pool it was last associated with instead of CPU. After the previous WORK_OFFQ_POOL_CPU and worker_poo->id additions, the conversion is fairly straight-forward. WORK_OFFQ constants and functions are modified to record and read back pool ID instead. worker_pool_by_id() is added to allow looking up pool from ID. get_work_pool() replaces get_work_gcwq(), which is reimplemented using get_work_pool(). get_work_pool_id() replaces work_cpu(). This patch shouldn't introduce any observable behavior changes. Signed-off-by: Tejun Heo Reviewed-by: Lai Jiangshan --- include/linux/workqueue.h | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h index f8b35763e55f..a94e4e84e7b1 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -75,19 +75,19 @@ enum { /* * When a work item is off queue, its high bits point to the last - * cpu it was on. Cap at 31 bits and use the highest number to - * indicate that no cpu is associated. + * pool it was on. Cap at 31 bits and use the highest number to + * indicate that no pool is associated. */ WORK_OFFQ_FLAG_BITS = 1, - WORK_OFFQ_CPU_SHIFT = WORK_OFFQ_FLAG_BASE + WORK_OFFQ_FLAG_BITS, - WORK_OFFQ_LEFT = BITS_PER_LONG - WORK_OFFQ_CPU_SHIFT, - WORK_OFFQ_CPU_BITS = WORK_OFFQ_LEFT <= 31 ? WORK_OFFQ_LEFT : 31, - WORK_OFFQ_CPU_NONE = (1LU << WORK_OFFQ_CPU_BITS) - 1, + WORK_OFFQ_POOL_SHIFT = WORK_OFFQ_FLAG_BASE + WORK_OFFQ_FLAG_BITS, + WORK_OFFQ_LEFT = BITS_PER_LONG - WORK_OFFQ_POOL_SHIFT, + WORK_OFFQ_POOL_BITS = WORK_OFFQ_LEFT <= 31 ? WORK_OFFQ_LEFT : 31, + WORK_OFFQ_POOL_NONE = (1LU << WORK_OFFQ_POOL_BITS) - 1, /* convenience constants */ WORK_STRUCT_FLAG_MASK = (1UL << WORK_STRUCT_FLAG_BITS) - 1, WORK_STRUCT_WQ_DATA_MASK = ~WORK_STRUCT_FLAG_MASK, - WORK_STRUCT_NO_CPU = (unsigned long)WORK_OFFQ_CPU_NONE << WORK_OFFQ_CPU_SHIFT, + WORK_STRUCT_NO_POOL = (unsigned long)WORK_OFFQ_POOL_NONE << WORK_OFFQ_POOL_SHIFT, /* bit mask for work_busy() return values */ WORK_BUSY_PENDING = 1 << 0, @@ -103,9 +103,9 @@ struct work_struct { #endif }; -#define WORK_DATA_INIT() ATOMIC_LONG_INIT(WORK_STRUCT_NO_CPU) +#define WORK_DATA_INIT() ATOMIC_LONG_INIT(WORK_STRUCT_NO_POOL) #define WORK_DATA_STATIC_INIT() \ - ATOMIC_LONG_INIT(WORK_STRUCT_NO_CPU | WORK_STRUCT_STATIC) + ATOMIC_LONG_INIT(WORK_STRUCT_NO_POOL | WORK_STRUCT_STATIC) struct delayed_work { struct work_struct work; -- cgit v1.2.3 From f2f6c2556dcc432e50003bc8fa4d62d95906f149 Mon Sep 17 00:00:00 2001 From: Prashant Gaikwad Date: Fri, 4 Jan 2013 12:30:52 +0530 Subject: clk: add common of_clk_init() function Modify of_clk_init function so that it will determine which driver to initialize based on device tree instead of each driver registering to it. Based on a similar patch for drivers/irqchip by Thomas Petazzoni and drivers/clocksource by Stephen Warren. Signed-off-by: Prashant Gaikwad Tested-by: Tony Prisk Tested-by: Pawel Moll Tested-by: Rob Herring Tested-by: Josh Cartwright Reviewed-by: Josh Cartwright Acked-by: Maxime Ripard Signed-off-by: Mike Turquette [mturquette@linaro.org: merge conflict from missing CLKSRC_OF_TABLES()] Signed-off-by: Mike Turquette --- include/linux/clk-provider.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 4989b8a7bed1..7f197d7addb0 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -379,7 +379,13 @@ struct clk_onecell_data { }; struct clk *of_clk_src_onecell_get(struct of_phandle_args *clkspec, void *data); const char *of_clk_get_parent_name(struct device_node *np, int index); + void of_clk_init(const struct of_device_id *matches); +#define CLK_OF_DECLARE(name, compat, fn) \ + static const struct of_device_id __clk_of_table_##name \ + __used __section(__clk_of_table) \ + = { .compatible = compat, .data = fn }; + #endif /* CONFIG_COMMON_CLK */ #endif /* CLK_PROVIDER_H */ -- cgit v1.2.3 From 2d7ebbb0946e9e13285eee348df1dbc48f0580e0 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 24 Jan 2013 11:00:15 +0200 Subject: usb: gadget: completely remove ->start/->stop Those have been deprecated for a long time and previous patches just converted all remaining users of those. Since there are no in-tree users and we don't want any new users for them, let's obliterate every piece of code related to those calls. Signed-off-by: Felipe Balbi --- include/linux/usb/gadget.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index e4c119ee4ebe..2e297e80d59a 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -471,12 +471,6 @@ struct usb_gadget_ops { struct usb_gadget_driver *); int (*udc_stop)(struct usb_gadget *, struct usb_gadget_driver *); - - /* Those two are deprecated */ - int (*start)(struct usb_gadget_driver *, - int (*bind)(struct usb_gadget *, - struct usb_gadget_driver *driver)); - int (*stop)(struct usb_gadget_driver *); }; /** -- cgit v1.2.3 From 85a181986c9cf8bbd2c4f2fb6f2add7ac5db1f76 Mon Sep 17 00:00:00 2001 From: Prashant Gaikwad Date: Fri, 4 Jan 2013 12:30:54 +0530 Subject: clk: sunxi: Use common of_clk_init() function Use common of_clk_init() function to initialize clocks. Signed-off-by: Prashant Gaikwad Acked-by: Maxime Ripard Signed-off-by: Mike Turquette --- include/linux/clk/sunxi.h | 22 ---------------------- 1 file changed, 22 deletions(-) delete mode 100644 include/linux/clk/sunxi.h (limited to 'include/linux') diff --git a/include/linux/clk/sunxi.h b/include/linux/clk/sunxi.h deleted file mode 100644 index e074fdd5a236..000000000000 --- a/include/linux/clk/sunxi.h +++ /dev/null @@ -1,22 +0,0 @@ -/* - * Copyright 2012 Maxime Ripard - * - * Maxime Ripard - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#ifndef __LINUX_CLK_SUNXI_H_ -#define __LINUX_CLK_SUNXI_H_ - -void __init sunxi_init_clocks(void); - -#endif -- cgit v1.2.3 From ace783b9bbfa2182b4a561498db3f09a0c56bc79 Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Thu, 24 Jan 2013 14:30:48 +0800 Subject: sched: split out css_online/css_offline from tg creation/destruction This is a preparaton for later patches. - What do we gain from cpu_cgroup_css_online(): After ss->css_alloc() and before ss->css_online(), there's a small window that tg->css.cgroup is NULL. With this change, tg won't be seen before ss->css_online(), where it's added to the global list, so we're guaranteed we'll never see NULL tg->css.cgroup. - What do we gain from cpu_cgroup_css_offline(): tg is freed via RCU, so is cgroup. Without this change, This is how synchronization works: cgroup_rmdir() no ss->css_offline() diput() syncornize_rcu() ss->css_free() <-- unregister tg, and free it via call_rcu() kfree_rcu(cgroup) <-- wait possible refs to cgroup, and free cgroup We can't just kfree(cgroup), because tg might access tg->css.cgroup. With this change: cgroup_rmdir() ss->css_offline() <-- unregister tg diput() synchronize_rcu() <-- wait possible refs to tg and cgroup ss->css_free() <-- free tg kfree_rcu(cgroup) <-- free cgroup As you see, kfree_rcu() is redundant now. Signed-off-by: Li Zefan Signed-off-by: Tejun Heo Acked-by: Ingo Molnar --- include/linux/sched.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 206bb089c06b..577eb973de7a 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2750,7 +2750,10 @@ extern void normalize_rt_tasks(void); extern struct task_group root_task_group; extern struct task_group *sched_create_group(struct task_group *parent); +extern void sched_online_group(struct task_group *tg, + struct task_group *parent); extern void sched_destroy_group(struct task_group *tg); +extern void sched_offline_group(struct task_group *tg); extern void sched_move_task(struct task_struct *tsk); #ifdef CONFIG_FAIR_GROUP_SCHED extern int sched_group_set_shares(struct task_group *tg, unsigned long shares); -- cgit v1.2.3 From be44562613851235d801d41d5b3976dc4333f622 Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Thu, 24 Jan 2013 14:31:42 +0800 Subject: cgroup: remove synchronize_rcu() from cgroup_diput() Free cgroup via call_rcu(). The actual work is done through workqueue. Signed-off-by: Li Zefan Signed-off-by: Tejun Heo --- include/linux/cgroup.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 8118a3120378..900af5964f55 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -203,6 +203,7 @@ struct cgroup { /* For RCU-protected deletion */ struct rcu_head rcu_head; + struct work_struct free_work; /* List of events which userspace want to receive */ struct list_head event_list; -- cgit v1.2.3 From 6543becf26fff612cdadeed7250ccc8d49f67f27 Mon Sep 17 00:00:00 2001 From: Andreas Schwab Date: Sun, 20 Jan 2013 17:58:47 +0100 Subject: mod/file2alias: make modalias generation safe for cross compiling Use the target compiler to compute the offsets for the fields of the device_id structures, so that it won't be broken by different alignments between the host and target ABIs. This also fixes missing endian corrections for some modaliases. Signed-off-by: Andreas Schwab Signed-off-by: Michal Marek --- include/linux/mod_devicetable.h | 58 +++++++---------------------------------- 1 file changed, 9 insertions(+), 49 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h index fed3def62818..779cf7c4a3d1 100644 --- a/include/linux/mod_devicetable.h +++ b/include/linux/mod_devicetable.h @@ -33,8 +33,7 @@ struct ieee1394_device_id { __u32 model_id; __u32 specifier_id; __u32 version; - kernel_ulong_t driver_data - __attribute__((aligned(sizeof(kernel_ulong_t)))); + kernel_ulong_t driver_data; }; @@ -148,8 +147,7 @@ struct hid_device_id { __u16 group; __u32 vendor; __u32 product; - kernel_ulong_t driver_data - __attribute__((aligned(sizeof(kernel_ulong_t)))); + kernel_ulong_t driver_data; }; /* s390 CCW devices */ @@ -173,8 +171,6 @@ struct ccw_device_id { struct ap_device_id { __u16 match_flags; /* which fields to match against */ __u8 dev_type; /* device type */ - __u8 pad1; - __u32 pad2; kernel_ulong_t driver_info; }; @@ -184,13 +180,10 @@ struct ap_device_id { struct css_device_id { __u8 match_flags; __u8 type; /* subchannel type */ - __u16 pad2; - __u32 pad3; kernel_ulong_t driver_data; }; -#define ACPI_ID_LEN 16 /* only 9 bytes needed here, 16 bytes are used */ - /* to workaround crosscompile issues */ +#define ACPI_ID_LEN 9 struct acpi_device_id { __u8 id[ACPI_ID_LEN]; @@ -231,11 +224,7 @@ struct of_device_id char name[32]; char type[32]; char compatible[128]; -#ifdef __KERNEL__ const void *data; -#else - kernel_ulong_t data; -#endif }; /* VIO */ @@ -260,24 +249,14 @@ struct pcmcia_device_id { /* for pseudo multi-function devices */ __u8 device_no; - __u32 prod_id_hash[4] - __attribute__((aligned(sizeof(__u32)))); + __u32 prod_id_hash[4]; /* not matched against in kernelspace*/ -#ifdef __KERNEL__ const char * prod_id[4]; -#else - kernel_ulong_t prod_id[4] - __attribute__((aligned(sizeof(kernel_ulong_t)))); -#endif /* not matched against */ kernel_ulong_t driver_info; -#ifdef __KERNEL__ char * cisfile; -#else - kernel_ulong_t cisfile; -#endif }; #define PCMCIA_DEV_ID_MATCH_MANF_ID 0x0001 @@ -373,8 +352,7 @@ struct sdio_device_id { __u8 class; /* Standard interface or SDIO_ANY_ID */ __u16 vendor; /* Vendor or SDIO_ANY_ID */ __u16 device; /* Device ID or SDIO_ANY_ID */ - kernel_ulong_t driver_data /* Data private to the driver */ - __attribute__((aligned(sizeof(kernel_ulong_t)))); + kernel_ulong_t driver_data; /* Data private to the driver */ }; /* SSB core, see drivers/ssb/ */ @@ -420,8 +398,7 @@ struct virtio_device_id { */ struct hv_vmbus_device_id { __u8 guid[16]; - kernel_ulong_t driver_data /* Data private to the driver */ - __attribute__((aligned(sizeof(kernel_ulong_t)))); + kernel_ulong_t driver_data; /* Data private to the driver */ }; /* rpmsg */ @@ -440,8 +417,7 @@ struct rpmsg_device_id { struct i2c_device_id { char name[I2C_NAME_SIZE]; - kernel_ulong_t driver_data /* Data private to the driver */ - __attribute__((aligned(sizeof(kernel_ulong_t)))); + kernel_ulong_t driver_data; /* Data private to the driver */ }; /* spi */ @@ -451,8 +427,7 @@ struct i2c_device_id { struct spi_device_id { char name[SPI_NAME_SIZE]; - kernel_ulong_t driver_data /* Data private to the driver */ - __attribute__((aligned(sizeof(kernel_ulong_t)))); + kernel_ulong_t driver_data; /* Data private to the driver */ }; /* dmi */ @@ -484,15 +459,6 @@ struct dmi_strmatch { char substr[79]; }; -#ifndef __KERNEL__ -struct dmi_system_id { - kernel_ulong_t callback; - kernel_ulong_t ident; - struct dmi_strmatch matches[4]; - kernel_ulong_t driver_data - __attribute__((aligned(sizeof(kernel_ulong_t)))); -}; -#else struct dmi_system_id { int (*callback)(const struct dmi_system_id *); const char *ident; @@ -506,7 +472,6 @@ struct dmi_system_id { * error: storage size of '__mod_dmi_device_table' isn't known */ #define dmi_device_id dmi_system_id -#endif #define DMI_MATCH(a, b) { a, b } @@ -515,8 +480,7 @@ struct dmi_system_id { struct platform_device_id { char name[PLATFORM_NAME_SIZE]; - kernel_ulong_t driver_data - __attribute__((aligned(sizeof(kernel_ulong_t)))); + kernel_ulong_t driver_data; }; #define MDIO_MODULE_PREFIX "mdio:" @@ -572,11 +536,7 @@ struct isapnp_device_id { struct amba_id { unsigned int id; unsigned int mask; -#ifndef __KERNEL__ - kernel_ulong_t data; -#else void *data; -#endif }; /* -- cgit v1.2.3 From d4e62d0094e1b0f69946c3f16ce8ec882302a461 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sat, 15 Dec 2012 23:50:43 +0100 Subject: sh-pfc: Split platform data from the sh_pfc structure Create a sh_pfc_platform_data structure to store platform data and reference it from the core sh_pfc structure. Signed-off-by: Laurent Pinchart Acked-by: Paul Mundt Acked-by: Linus Walleij Signed-off-by: Simon Horman --- include/linux/sh_pfc.h | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sh_pfc.h b/include/linux/sh_pfc.h index c19a0925829a..58587f94d67a 100644 --- a/include/linux/sh_pfc.h +++ b/include/linux/sh_pfc.h @@ -94,7 +94,7 @@ struct pfc_window { unsigned long size; }; -struct sh_pfc { +struct sh_pfc_platform_data { char *name; pinmux_enum_t reserved_id; struct pinmux_range data; @@ -117,17 +117,21 @@ struct sh_pfc { struct pinmux_irq *gpio_irq; unsigned int gpio_irq_size; - spinlock_t lock; - struct resource *resource; unsigned int num_resources; - struct pfc_window *window; unsigned long unlock_reg; }; +struct sh_pfc { + struct sh_pfc_platform_data *pdata; + spinlock_t lock; + + struct pfc_window *window; +}; + /* XXX compat for now */ -#define pinmux_info sh_pfc +#define pinmux_info sh_pfc_platform_data /* drivers/sh/pfc/gpio.c */ int sh_pfc_register_gpiochip(struct sh_pfc *pfc); @@ -136,7 +140,7 @@ int sh_pfc_register_gpiochip(struct sh_pfc *pfc); int sh_pfc_register_pinctrl(struct sh_pfc *pfc); /* drivers/sh/pfc/core.c */ -int register_sh_pfc(struct sh_pfc *pfc); +int register_sh_pfc(struct sh_pfc_platform_data *pfc); int sh_pfc_read_bit(struct pinmux_data_reg *dr, unsigned long in_pos); void sh_pfc_write_bit(struct pinmux_data_reg *dr, unsigned long in_pos, @@ -151,8 +155,8 @@ int sh_pfc_config_gpio(struct sh_pfc *pfc, unsigned gpio, int pinmux_type, /* xxx */ static inline int register_pinmux(struct pinmux_info *pip) { - struct sh_pfc *pfc = pip; - return register_sh_pfc(pfc); + struct sh_pfc_platform_data *pdata = pip; + return register_sh_pfc(pdata); } enum { GPIO_CFG_DRYRUN, GPIO_CFG_REQ, GPIO_CFG_FREE }; -- cgit v1.2.3 From f9165132c5ee681235068857e4f86c7ecc5a4617 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sat, 15 Dec 2012 23:50:44 +0100 Subject: sh-pfc: Move private definitions and declarations to private header Move all private structure definitions and function declarations from include/linux/sh_pfc.h to drivers/sh/pfc/core.h. Signed-off-by: Laurent Pinchart Acked-by: Paul Mundt Acked-by: Linus Walleij Signed-off-by: Simon Horman --- include/linux/sh_pfc.h | 29 ----------------------------- 1 file changed, 29 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sh_pfc.h b/include/linux/sh_pfc.h index 58587f94d67a..f7f01b231b66 100644 --- a/include/linux/sh_pfc.h +++ b/include/linux/sh_pfc.h @@ -88,12 +88,6 @@ struct pinmux_range { pinmux_enum_t force; }; -struct pfc_window { - phys_addr_t phys; - void __iomem *virt; - unsigned long size; -}; - struct sh_pfc_platform_data { char *name; pinmux_enum_t reserved_id; @@ -123,35 +117,12 @@ struct sh_pfc_platform_data { unsigned long unlock_reg; }; -struct sh_pfc { - struct sh_pfc_platform_data *pdata; - spinlock_t lock; - - struct pfc_window *window; -}; - /* XXX compat for now */ #define pinmux_info sh_pfc_platform_data -/* drivers/sh/pfc/gpio.c */ -int sh_pfc_register_gpiochip(struct sh_pfc *pfc); - -/* drivers/sh/pfc/pinctrl.c */ -int sh_pfc_register_pinctrl(struct sh_pfc *pfc); - /* drivers/sh/pfc/core.c */ int register_sh_pfc(struct sh_pfc_platform_data *pfc); -int sh_pfc_read_bit(struct pinmux_data_reg *dr, unsigned long in_pos); -void sh_pfc_write_bit(struct pinmux_data_reg *dr, unsigned long in_pos, - unsigned long value); -int sh_pfc_get_data_reg(struct sh_pfc *pfc, unsigned gpio, - struct pinmux_data_reg **drp, int *bitp); -int sh_pfc_gpio_to_enum(struct sh_pfc *pfc, unsigned gpio, int pos, - pinmux_enum_t *enum_idp); -int sh_pfc_config_gpio(struct sh_pfc *pfc, unsigned gpio, int pinmux_type, - int cfg_mode); - /* xxx */ static inline int register_pinmux(struct pinmux_info *pip) { -- cgit v1.2.3 From 8682b3c522c639f3a0de31c86bb91f2f9a6c76cb Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sat, 15 Dec 2012 23:51:17 +0100 Subject: sh-pfc: Remove platform device registration The PFC platform device is now registered by arch code, remove the legacy registration mechanism. Signed-off-by: Laurent Pinchart Acked-by: Paul Mundt Acked-by: Linus Walleij Signed-off-by: Simon Horman --- include/linux/sh_pfc.h | 10 ---------- 1 file changed, 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sh_pfc.h b/include/linux/sh_pfc.h index f7f01b231b66..fa1fec084229 100644 --- a/include/linux/sh_pfc.h +++ b/include/linux/sh_pfc.h @@ -120,16 +120,6 @@ struct sh_pfc_platform_data { /* XXX compat for now */ #define pinmux_info sh_pfc_platform_data -/* drivers/sh/pfc/core.c */ -int register_sh_pfc(struct sh_pfc_platform_data *pfc); - -/* xxx */ -static inline int register_pinmux(struct pinmux_info *pip) -{ - struct sh_pfc_platform_data *pdata = pip; - return register_sh_pfc(pdata); -} - enum { GPIO_CFG_DRYRUN, GPIO_CFG_REQ, GPIO_CFG_FREE }; /* helper macro for port */ -- cgit v1.2.3 From 56dc04af3b5e54be330e18630301d2bda5d365eb Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sat, 15 Dec 2012 23:51:18 +0100 Subject: sh-pfc: Remove unused resource and num_resources platform data fields The fields are now unused, remove them. Signed-off-by: Laurent Pinchart Acked-by: Paul Mundt Acked-by: Linus Walleij Signed-off-by: Simon Horman --- include/linux/sh_pfc.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sh_pfc.h b/include/linux/sh_pfc.h index fa1fec084229..4f942337d77e 100644 --- a/include/linux/sh_pfc.h +++ b/include/linux/sh_pfc.h @@ -111,9 +111,6 @@ struct sh_pfc_platform_data { struct pinmux_irq *gpio_irq; unsigned int gpio_irq_size; - struct resource *resource; - unsigned int num_resources; - unsigned long unlock_reg; }; -- cgit v1.2.3 From 19bb7fe36950ff74ce322cc29f6f4e025999f1f0 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sat, 15 Dec 2012 23:51:20 +0100 Subject: sh-pfc: Support pinmux info in driver data instead of platform data Pinmux information should be provided by the pinmux driver, not arch code. Make it possible to do so by supporting pinmux information passed through the driver_data field in the platform ID table. Platform data will remain supported until all arch code has been converted. Rename the sh_pfc_platform_data structure to sh_pfc_soc_info to reflect this. Signed-off-by: Laurent Pinchart Acked-by: Paul Mundt Acked-by: Linus Walleij Signed-off-by: Simon Horman --- include/linux/sh_pfc.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sh_pfc.h b/include/linux/sh_pfc.h index 4f942337d77e..9fd62282c625 100644 --- a/include/linux/sh_pfc.h +++ b/include/linux/sh_pfc.h @@ -88,7 +88,7 @@ struct pinmux_range { pinmux_enum_t force; }; -struct sh_pfc_platform_data { +struct sh_pfc_soc_info { char *name; pinmux_enum_t reserved_id; struct pinmux_range data; @@ -115,7 +115,7 @@ struct sh_pfc_platform_data { }; /* XXX compat for now */ -#define pinmux_info sh_pfc_platform_data +#define pinmux_info sh_pfc_soc_info enum { GPIO_CFG_DRYRUN, GPIO_CFG_REQ, GPIO_CFG_FREE }; -- cgit v1.2.3 From b93911e3d59bcd665a810fdf8ec7040a74eb4ff4 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sat, 15 Dec 2012 23:51:54 +0100 Subject: sh-pfc: Remove pinmux_info definition The pinmux_info alias to sh_pfc_soc_info isn't needed anymore, remove it. Signed-off-by: Laurent Pinchart Acked-by: Paul Mundt Acked-by: Linus Walleij Signed-off-by: Simon Horman --- include/linux/sh_pfc.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sh_pfc.h b/include/linux/sh_pfc.h index 9fd62282c625..13049c4c8d30 100644 --- a/include/linux/sh_pfc.h +++ b/include/linux/sh_pfc.h @@ -114,9 +114,6 @@ struct sh_pfc_soc_info { unsigned long unlock_reg; }; -/* XXX compat for now */ -#define pinmux_info sh_pfc_soc_info - enum { GPIO_CFG_DRYRUN, GPIO_CFG_REQ, GPIO_CFG_FREE }; /* helper macro for port */ -- cgit v1.2.3 From c3323806a67c0c656e27956b7340e37ba6c6968b Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sat, 15 Dec 2012 23:51:55 +0100 Subject: sh-pfc: Move sh_pfc.h from include/linux/ to driver directory The header file isn't used by arch code anymore. Make it private to the driver. Signed-off-by: Laurent Pinchart Acked-by: Paul Mundt Acked-by: Linus Walleij Signed-off-by: Simon Horman --- include/linux/sh_pfc.h | 195 ------------------------------------------------- 1 file changed, 195 deletions(-) delete mode 100644 include/linux/sh_pfc.h (limited to 'include/linux') diff --git a/include/linux/sh_pfc.h b/include/linux/sh_pfc.h deleted file mode 100644 index 13049c4c8d30..000000000000 --- a/include/linux/sh_pfc.h +++ /dev/null @@ -1,195 +0,0 @@ -/* - * SuperH Pin Function Controller Support - * - * Copyright (c) 2008 Magnus Damm - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - */ - -#ifndef __SH_PFC_H -#define __SH_PFC_H - -#include -#include - -typedef unsigned short pinmux_enum_t; -typedef unsigned short pinmux_flag_t; - -enum { - PINMUX_TYPE_NONE, - - PINMUX_TYPE_FUNCTION, - PINMUX_TYPE_GPIO, - PINMUX_TYPE_OUTPUT, - PINMUX_TYPE_INPUT, - PINMUX_TYPE_INPUT_PULLUP, - PINMUX_TYPE_INPUT_PULLDOWN, - - PINMUX_FLAG_TYPE, /* must be last */ -}; - -#define PINMUX_FLAG_DBIT_SHIFT 5 -#define PINMUX_FLAG_DBIT (0x1f << PINMUX_FLAG_DBIT_SHIFT) -#define PINMUX_FLAG_DREG_SHIFT 10 -#define PINMUX_FLAG_DREG (0x3f << PINMUX_FLAG_DREG_SHIFT) - -struct pinmux_gpio { - pinmux_enum_t enum_id; - pinmux_flag_t flags; - const char *name; -}; - -#define PINMUX_GPIO(gpio, data_or_mark) \ - [gpio] = { .name = __stringify(gpio), .enum_id = data_or_mark, .flags = PINMUX_TYPE_NONE } - -#define PINMUX_DATA(data_or_mark, ids...) data_or_mark, ids, 0 - -struct pinmux_cfg_reg { - unsigned long reg, reg_width, field_width; - unsigned long *cnt; - pinmux_enum_t *enum_ids; - unsigned long *var_field_width; -}; - -#define PINMUX_CFG_REG(name, r, r_width, f_width) \ - .reg = r, .reg_width = r_width, .field_width = f_width, \ - .cnt = (unsigned long [r_width / f_width]) {}, \ - .enum_ids = (pinmux_enum_t [(r_width / f_width) * (1 << f_width)]) - -#define PINMUX_CFG_REG_VAR(name, r, r_width, var_fw0, var_fwn...) \ - .reg = r, .reg_width = r_width, \ - .cnt = (unsigned long [r_width]) {}, \ - .var_field_width = (unsigned long [r_width]) { var_fw0, var_fwn, 0 }, \ - .enum_ids = (pinmux_enum_t []) - -struct pinmux_data_reg { - unsigned long reg, reg_width, reg_shadow; - pinmux_enum_t *enum_ids; - void __iomem *mapped_reg; -}; - -#define PINMUX_DATA_REG(name, r, r_width) \ - .reg = r, .reg_width = r_width, \ - .enum_ids = (pinmux_enum_t [r_width]) \ - -struct pinmux_irq { - int irq; - pinmux_enum_t *enum_ids; -}; - -#define PINMUX_IRQ(irq_nr, ids...) \ - { .irq = irq_nr, .enum_ids = (pinmux_enum_t []) { ids, 0 } } \ - -struct pinmux_range { - pinmux_enum_t begin; - pinmux_enum_t end; - pinmux_enum_t force; -}; - -struct sh_pfc_soc_info { - char *name; - pinmux_enum_t reserved_id; - struct pinmux_range data; - struct pinmux_range input; - struct pinmux_range input_pd; - struct pinmux_range input_pu; - struct pinmux_range output; - struct pinmux_range mark; - struct pinmux_range function; - - unsigned first_gpio, last_gpio; - - struct pinmux_gpio *gpios; - struct pinmux_cfg_reg *cfg_regs; - struct pinmux_data_reg *data_regs; - - pinmux_enum_t *gpio_data; - unsigned int gpio_data_size; - - struct pinmux_irq *gpio_irq; - unsigned int gpio_irq_size; - - unsigned long unlock_reg; -}; - -enum { GPIO_CFG_DRYRUN, GPIO_CFG_REQ, GPIO_CFG_FREE }; - -/* helper macro for port */ -#define PORT_1(fn, pfx, sfx) fn(pfx, sfx) - -#define PORT_10(fn, pfx, sfx) \ - PORT_1(fn, pfx##0, sfx), PORT_1(fn, pfx##1, sfx), \ - PORT_1(fn, pfx##2, sfx), PORT_1(fn, pfx##3, sfx), \ - PORT_1(fn, pfx##4, sfx), PORT_1(fn, pfx##5, sfx), \ - PORT_1(fn, pfx##6, sfx), PORT_1(fn, pfx##7, sfx), \ - PORT_1(fn, pfx##8, sfx), PORT_1(fn, pfx##9, sfx) - -#define PORT_90(fn, pfx, sfx) \ - PORT_10(fn, pfx##1, sfx), PORT_10(fn, pfx##2, sfx), \ - PORT_10(fn, pfx##3, sfx), PORT_10(fn, pfx##4, sfx), \ - PORT_10(fn, pfx##5, sfx), PORT_10(fn, pfx##6, sfx), \ - PORT_10(fn, pfx##7, sfx), PORT_10(fn, pfx##8, sfx), \ - PORT_10(fn, pfx##9, sfx) - -#define _PORT_ALL(pfx, sfx) pfx##_##sfx -#define _GPIO_PORT(pfx, sfx) PINMUX_GPIO(GPIO_PORT##pfx, PORT##pfx##_DATA) -#define PORT_ALL(str) CPU_ALL_PORT(_PORT_ALL, PORT, str) -#define GPIO_PORT_ALL() CPU_ALL_PORT(_GPIO_PORT, , unused) -#define GPIO_FN(str) PINMUX_GPIO(GPIO_FN_##str, str##_MARK) - -/* helper macro for pinmux_enum_t */ -#define PORT_DATA_I(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_IN) - -#define PORT_DATA_I_PD(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_IN, PORT##nr##_IN_PD) - -#define PORT_DATA_I_PU(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_IN, PORT##nr##_IN_PU) - -#define PORT_DATA_I_PU_PD(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU) - -#define PORT_DATA_O(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT) - -#define PORT_DATA_IO(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ - PORT##nr##_IN) - -#define PORT_DATA_IO_PD(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ - PORT##nr##_IN, PORT##nr##_IN_PD) - -#define PORT_DATA_IO_PU(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ - PORT##nr##_IN, PORT##nr##_IN_PU) - -#define PORT_DATA_IO_PU_PD(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ - PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU) - -/* helper macro for top 4 bits in PORTnCR */ -#define _PCRH(in, in_pd, in_pu, out) \ - 0, (out), (in), 0, \ - 0, 0, 0, 0, \ - 0, 0, (in_pd), 0, \ - 0, 0, (in_pu), 0 - -#define PORTCR(nr, reg) \ - { \ - PINMUX_CFG_REG("PORT" nr "CR", reg, 8, 4) { \ - _PCRH(PORT##nr##_IN, PORT##nr##_IN_PD, \ - PORT##nr##_IN_PU, PORT##nr##_OUT), \ - PORT##nr##_FN0, PORT##nr##_FN1, \ - PORT##nr##_FN2, PORT##nr##_FN3, \ - PORT##nr##_FN4, PORT##nr##_FN5, \ - PORT##nr##_FN6, PORT##nr##_FN7 } \ - } - -#endif /* __SH_PFC_H */ -- cgit v1.2.3 From c3ad83d9efdfe6a86efd44945a781f00c879b7b4 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Thu, 24 Jan 2013 23:24:56 -0500 Subject: quota: autoload the quota_v2 module for QFMT_VFS_V1 quota format Otherwise, ext4 file systems with the quota featured enable will get a very confusing "No such process" error message if the quota code is built as a module and the quota_v2 module has not been loaded. Signed-off-by: "Theodore Ts'o" Reviewed-by: Carlos Maiolino Acked-by: Jan Kara Cc: stable@vger.kernel.org --- include/linux/quota.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/quota.h b/include/linux/quota.h index 58fdef125252..d13371134c59 100644 --- a/include/linux/quota.h +++ b/include/linux/quota.h @@ -405,6 +405,7 @@ struct quota_module_name { #define INIT_QUOTA_MODULE_NAMES {\ {QFMT_VFS_OLD, "quota_v1"},\ {QFMT_VFS_V0, "quota_v2"},\ + {QFMT_VFS_V1, "quota_v2"},\ {0, NULL}} #endif /* _QUOTA_ */ -- cgit v1.2.3 From 7e41bba94617b7e4f77d3531a63fbfacdf6842a6 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:30:49 +0530 Subject: usb: dwc3: omap: Add an API to write to dwc mailbox Add an API in the omap glue layer to write to the mailbox register which can be used by comparator driver(twl). To pass the detection of the attached device (signified by VBUS, ID) to the dwc3 core, dwc3 core has to write to the mailbox regiter. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- include/linux/usb/dwc3-omap.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 include/linux/usb/dwc3-omap.h (limited to 'include/linux') diff --git a/include/linux/usb/dwc3-omap.h b/include/linux/usb/dwc3-omap.h new file mode 100644 index 000000000000..51eae14477f7 --- /dev/null +++ b/include/linux/usb/dwc3-omap.h @@ -0,0 +1,30 @@ +/* + * Copyright (C) 2013 by Texas Instruments + * + * The Inventra Controller Driver for Linux is free software; you + * can redistribute it and/or modify it under the terms of the GNU + * General Public License version 2 as published by the Free Software + * Foundation. + */ + +#ifndef __DWC3_OMAP_H__ +#define __DWC3_OMAP_H__ + +enum omap_dwc3_vbus_id_status { + OMAP_DWC3_UNKNOWN = 0, + OMAP_DWC3_ID_GROUND, + OMAP_DWC3_ID_FLOAT, + OMAP_DWC3_VBUS_VALID, + OMAP_DWC3_VBUS_OFF, +}; + +#if (defined(CONFIG_USB_DWC3) || defined(CONFIG_USB_DWC3_MODULE)) +extern void dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status); +#else +static inline void dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status) +{ + return; +} +#endif + +#endif /* __DWC3_OMAP_H__ */ -- cgit v1.2.3 From 57d2aa00dcec67afa52478730f2b524521af14fb Mon Sep 17 00:00:00 2001 From: Ying Xue Date: Tue, 17 Jul 2012 15:03:43 +0800 Subject: sched/rt: Avoid updating RT entry timeout twice within one tick period The issue below was found in 2.6.34-rt rather than mainline rt kernel, but the issue still exists upstream as well. So please let me describe how it was noticed on 2.6.34-rt: On this version, each softirq has its own thread, it means there is at least one RT FIFO task per cpu. The priority of these tasks is set to 49 by default. If user launches an RT FIFO task with priority lower than 49 of softirq RT tasks, it's possible there are two RT FIFO tasks enqueued one cpu runqueue at one moment. By current strategy of balancing RT tasks, when it comes to RT tasks, we really need to put them off to a CPU that they can run on as soon as possible. Even if it means a bit of cache line flushing, we want RT tasks to be run with the least latency. When the user RT FIFO task which just launched before is running, the sched timer tick of the current cpu happens. In this tick period, the timeout value of the user RT task will be updated once. Subsequently, we try to wake up one softirq RT task on its local cpu. As the priority of current user RT task is lower than the softirq RT task, the current task will be preempted by the higher priority softirq RT task. Before preemption, we check to see if current can readily move to a different cpu. If so, we will reschedule to allow the RT push logic to try to move current somewhere else. Whenever the woken softirq RT task runs, it first tries to migrate the user FIFO RT task over to a cpu that is running a task of lesser priority. If migration is done, it will send a reschedule request to the found cpu by IPI interrupt. Once the target cpu responds the IPI interrupt, it will pick the migrated user RT task to preempt its current task. When the user RT task is running on the new cpu, the sched timer tick of the cpu fires. So it will tick the user RT task again. This also means the RT task timeout value will be updated again. As the migration may be done in one tick period, it means the user RT task timeout value will be updated twice within one tick. If we set a limit on the amount of cpu time for the user RT task by setrlimit(RLIMIT_RTTIME), the SIGXCPU signal should be posted upon reaching the soft limit. But exactly when the SIGXCPU signal should be sent depends on the RT task timeout value. In fact the timeout mechanism of sending the SIGXCPU signal assumes the RT task timeout is increased once every tick. However, currently the timeout value may be added twice per tick. So it results in the SIGXCPU signal being sent earlier than expected. To solve this issue, we prevent the timeout value from increasing twice within one tick time by remembering the jiffies value of last updating the timeout. As long as the RT task's jiffies is different with the global jiffies value, we allow its timeout to be updated. Signed-off-by: Ying Xue Signed-off-by: Fan Du Reviewed-by: Yong Zhang Acked-by: Steven Rostedt Cc: Link: http://lkml.kernel.org/r/1342508623-2887-1-git-send-email-ying.xue@windriver.com Signed-off-by: Ingo Molnar --- include/linux/sched.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index d2112477ff5e..924e42a8df58 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1208,6 +1208,7 @@ struct sched_entity { struct sched_rt_entity { struct list_head run_list; unsigned long timeout; + unsigned long watchdog_stamp; unsigned int time_slice; struct sched_rt_entity *back; -- cgit v1.2.3 From b4a83e4df1bc864e89d3bb90e97f9caab656545d Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:03:21 +0530 Subject: usb: otg: add an api to bind the usb controller and phy In order to support platforms which has multiple PHY's (of same type) and which has multiple USB controllers, a new design is adopted wherin the binding information (between the PHY and the USB controller) should be passed to the PHY library from platform specific file (board file). So added a new API to pass the binding information. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- include/linux/usb/phy.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h index a29ae1eb9346..a812ed5a1691 100644 --- a/include/linux/usb/phy.h +++ b/include/linux/usb/phy.h @@ -106,6 +106,21 @@ struct usb_phy { enum usb_device_speed speed); }; +/** + * struct usb_phy_bind - represent the binding for the phy + * @dev_name: the device name of the device that will bind to the phy + * @phy_dev_name: the device name of the phy + * @index: used if a single controller uses multiple phys + * @phy: reference to the phy + * @list: to maintain a linked list of the binding information + */ +struct usb_phy_bind { + const char *dev_name; + const char *phy_dev_name; + u8 index; + struct usb_phy *phy; + struct list_head list; +}; /* for board-specific init logic */ extern int usb_add_phy(struct usb_phy *, enum usb_phy_type type); @@ -151,6 +166,8 @@ extern struct usb_phy *devm_usb_get_phy(struct device *dev, enum usb_phy_type type); extern void usb_put_phy(struct usb_phy *); extern void devm_usb_put_phy(struct device *dev, struct usb_phy *x); +extern int usb_bind_phy(const char *dev_name, u8 index, + const char *phy_dev_name); #else static inline struct usb_phy *usb_get_phy(enum usb_phy_type type) { @@ -171,6 +188,11 @@ static inline void devm_usb_put_phy(struct device *dev, struct usb_phy *x) { } +static inline int usb_bind_phy(const char *dev_name, u8 index, + const char *phy_dev_name) +{ + return -EOPNOTSUPP; +} #endif static inline int -- cgit v1.2.3 From 0fa4fab4ee46470ccd463c83be95434936942e05 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:03:22 +0530 Subject: usb: otg: utils: add facilities in phy lib to support multiple PHYs of same type In order to add support for multipe PHY's of the same type, new API's for adding PHY and getting PHY has been added. Now the binding information for the PHY and controller should be done in platform file using usb_bind_phy API. And for getting a PHY, the device pointer of the USB controller and an index should be passed. Based on the binding information that is added in the platform file, usb_get_phy_dev will return the appropriate PHY. Already existing API's to add and get phy by type is not removed. These API's are deprecated and will be removed once all the platforms start to use the new API. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- include/linux/usb/phy.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h index a812ed5a1691..359db7de61e4 100644 --- a/include/linux/usb/phy.h +++ b/include/linux/usb/phy.h @@ -124,6 +124,7 @@ struct usb_phy_bind { /* for board-specific init logic */ extern int usb_add_phy(struct usb_phy *, enum usb_phy_type type); +extern int usb_add_phy_dev(struct usb_phy *); extern void usb_remove_phy(struct usb_phy *); /* helpers for direct access thru low-level io interface */ @@ -164,6 +165,8 @@ usb_phy_shutdown(struct usb_phy *x) extern struct usb_phy *usb_get_phy(enum usb_phy_type type); extern struct usb_phy *devm_usb_get_phy(struct device *dev, enum usb_phy_type type); +extern struct usb_phy *usb_get_phy_dev(struct device *dev, u8 index); +extern struct usb_phy *devm_usb_get_phy_dev(struct device *dev, u8 index); extern void usb_put_phy(struct usb_phy *); extern void devm_usb_put_phy(struct device *dev, struct usb_phy *x); extern int usb_bind_phy(const char *dev_name, u8 index, @@ -180,6 +183,16 @@ static inline struct usb_phy *devm_usb_get_phy(struct device *dev, return NULL; } +static inline struct usb_phy *usb_get_phy_dev(struct device *dev, u8 index) +{ + return NULL; +} + +static inline struct usb_phy *devm_usb_get_phy_dev(struct device *dev, u8 index) +{ + return NULL; +} + static inline void usb_put_phy(struct usb_phy *x) { } -- cgit v1.2.3 From 5d3c28b5a42df5ceaa854901ba2cccb76883c77e Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:03:25 +0530 Subject: usb: otg: add device tree support to otg library Added an API devm_usb_get_phy_by_phandle(), to get usb phy by passing a device node phandle value. This function will return a pointer to the phy on success, -EPROBE_DEFER if there is a device_node for the phandle, but the phy has not been added, or a ERR_PTR() otherwise. Cc: Marc Kleine-Budde Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- include/linux/usb/phy.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h index 359db7de61e4..15847cbdb512 100644 --- a/include/linux/usb/phy.h +++ b/include/linux/usb/phy.h @@ -167,6 +167,8 @@ extern struct usb_phy *devm_usb_get_phy(struct device *dev, enum usb_phy_type type); extern struct usb_phy *usb_get_phy_dev(struct device *dev, u8 index); extern struct usb_phy *devm_usb_get_phy_dev(struct device *dev, u8 index); +extern struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev, + const char *phandle, u8 index); extern void usb_put_phy(struct usb_phy *); extern void devm_usb_put_phy(struct device *dev, struct usb_phy *x); extern int usb_bind_phy(const char *dev_name, u8 index, @@ -193,6 +195,12 @@ static inline struct usb_phy *devm_usb_get_phy_dev(struct device *dev, u8 index) return NULL; } +static inline struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev, + const char *phandle, u8 index) +{ + return NULL; +} + static inline void usb_put_phy(struct usb_phy *x) { } -- cgit v1.2.3 From 01658f0f8d1322dbf94f289aa610731d539bf888 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 15:53:57 +0530 Subject: usb: phy: add a new driver for usb part of control module Added a new driver for the usb part of control module. This has an API to power on the USB2 phy and an API to write to the mailbox depending on whether MUSB has to act in host mode or in device mode. Writing to control module registers for doing the above task which was previously done in omap glue and in omap-usb2 phy will be removed. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- include/linux/usb/omap_control_usb.h | 92 ++++++++++++++++++++++++++++++++++++ 1 file changed, 92 insertions(+) create mode 100644 include/linux/usb/omap_control_usb.h (limited to 'include/linux') diff --git a/include/linux/usb/omap_control_usb.h b/include/linux/usb/omap_control_usb.h new file mode 100644 index 000000000000..f306db7149ca --- /dev/null +++ b/include/linux/usb/omap_control_usb.h @@ -0,0 +1,92 @@ +/* + * omap_control_usb.h - Header file for the USB part of control module. + * + * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Author: Kishon Vijay Abraham I + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __OMAP_CONTROL_USB_H__ +#define __OMAP_CONTROL_USB_H__ + +struct omap_control_usb { + struct device *dev; + + u32 __iomem *dev_conf; + u32 __iomem *otghs_control; + u32 __iomem *phy_power; + + struct clk *sys_clk; + + u32 type; +}; + +struct omap_control_usb_platform_data { + u8 type; +}; + +enum omap_control_usb_mode { + USB_MODE_UNDEFINED = 0, + USB_MODE_HOST, + USB_MODE_DEVICE, + USB_MODE_DISCONNECT, +}; + +/* To differentiate ctrl module IP having either mailbox or USB3 PHY power */ +#define OMAP_CTRL_DEV_TYPE1 0x1 +#define OMAP_CTRL_DEV_TYPE2 0x2 + +#define OMAP_CTRL_DEV_PHY_PD BIT(0) + +#define OMAP_CTRL_DEV_AVALID BIT(0) +#define OMAP_CTRL_DEV_BVALID BIT(1) +#define OMAP_CTRL_DEV_VBUSVALID BIT(2) +#define OMAP_CTRL_DEV_SESSEND BIT(3) +#define OMAP_CTRL_DEV_IDDIG BIT(4) + +#define OMAP_CTRL_USB_PWRCTL_CLK_CMD_MASK 0x003FC000 +#define OMAP_CTRL_USB_PWRCTL_CLK_CMD_SHIFT 0xE + +#define OMAP_CTRL_USB_PWRCTL_CLK_FREQ_MASK 0xFFC00000 +#define OMAP_CTRL_USB_PWRCTL_CLK_FREQ_SHIFT 0x16 + +#define OMAP_CTRL_USB3_PHY_TX_RX_POWERON 0x3 +#define OMAP_CTRL_USB3_PHY_TX_RX_POWEROFF 0x0 + +#if IS_ENABLED(CONFIG_OMAP_CONTROL_USB) +extern struct device *omap_get_control_dev(void); +extern void omap_control_usb_phy_power(struct device *dev, int on); +extern void omap_control_usb3_phy_power(struct device *dev, bool on); +extern void omap_control_usb_set_mode(struct device *dev, + enum omap_control_usb_mode mode); +#else +static inline struct device *omap_get_control_dev() +{ + return ERR_PTR(-ENODEV); +} + +static inline void omap_control_usb_phy_power(struct device *dev, int on) +{ +} + +static inline void omap_control_usb3_phy_power(struct device *dev, int on) +{ +} + +static inline void omap_control_usb_set_mode(struct device *dev, + enum omap_control_usb_mode mode) +{ +} +#endif + +#endif /* __OMAP_CONTROL_USB_H__ */ -- cgit v1.2.3 From ca784be36cc725bca9b526eba342de7550329731 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 15:54:00 +0530 Subject: usb: start using the control module driver Start using the control module driver for powering on the PHY and for writing to the mailbox instead of writing to the control module registers on their own. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- include/linux/usb/omap_usb.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/omap_usb.h b/include/linux/usb/omap_usb.h index 0ea17f8ae820..3db9b5316b10 100644 --- a/include/linux/usb/omap_usb.h +++ b/include/linux/usb/omap_usb.h @@ -25,13 +25,11 @@ struct omap_usb { struct usb_phy phy; struct phy_companion *comparator; struct device *dev; - u32 __iomem *control_dev; + struct device *control_dev; struct clk *wkupclk; u8 is_suspended:1; }; -#define PHY_PD 0x1 - #define phy_to_omapusb(x) container_of((x), struct omap_usb, phy) #if defined(CONFIG_OMAP_USB2) || defined(CONFIG_OMAP_USB2_MODULE) -- cgit v1.2.3 From 57f6ce072e35770a63be0c5d5e82f90d8da7d665 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:21:48 +0530 Subject: usb: phy: add a new driver for usb3 phy Added a driver for usb3 phy that handles the interaction between usb phy device and dwc3 controller. This also includes device tree support for usb3 phy driver and the documentation with device tree binding information is updated. Currently writing to control module register is taken care in this driver which will be removed once the control module driver is in place. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi Signed-off-by: Moiz Sonasath Signed-off-by: Felipe Balbi --- include/linux/usb/omap_usb.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/omap_usb.h b/include/linux/usb/omap_usb.h index 3db9b5316b10..6ae29360e1d2 100644 --- a/include/linux/usb/omap_usb.h +++ b/include/linux/usb/omap_usb.h @@ -19,14 +19,26 @@ #ifndef __DRIVERS_OMAP_USB2_H #define __DRIVERS_OMAP_USB2_H +#include #include +struct usb_dpll_params { + u16 m; + u8 n; + u8 freq:3; + u8 sd; + u32 mf; +}; + struct omap_usb { struct usb_phy phy; struct phy_companion *comparator; + void __iomem *pll_ctrl_base; struct device *dev; struct device *control_dev; struct clk *wkupclk; + struct clk *sys_clk; + struct clk *optclk; u8 is_suspended:1; }; @@ -41,4 +53,15 @@ static inline int omap_usb2_set_comparator(struct phy_companion *comparator) } #endif +static inline u32 omap_usb_readl(void __iomem *addr, unsigned offset) +{ + return __raw_readl(addr + offset); +} + +static inline void omap_usb_writel(void __iomem *addr, unsigned offset, + u32 data) +{ + __raw_writel(data, addr + offset); +} + #endif /* __DRIVERS_OMAP_USB_H */ -- cgit v1.2.3 From 7fb96565e3e18ad41857ca6ffdaa9a26ae92df5a Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Wed, 23 Jan 2013 17:42:40 -0800 Subject: Drivers: hv: vmbus: Consolidate all offer GUID definitions in hyperv.h Consolidate all GUID definitions in hyperv.h and use these definitions in implementing channel bindings (as far as interrupt delivery goes). Signed-off-by: K. Y. Srinivasan Reviewed-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 94 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 94 insertions(+) (limited to 'include/linux') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 5095b066df94..df77ba9a8166 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -1158,6 +1158,100 @@ void vmbus_driver_unregister(struct hv_driver *hv_driver); .guid = { g0, g1, g2, g3, g4, g5, g6, g7, \ g8, g9, ga, gb, gc, gd, ge, gf }, +/* + * GUID definitions of various offer types - services offered to the guest. + */ + +/* + * Network GUID + * {f8615163-df3e-46c5-913f-f2d2f965ed0e} + */ +#define HV_NIC_GUID \ + .guid = { \ + 0x63, 0x51, 0x61, 0xf8, 0x3e, 0xdf, 0xc5, 0x46, \ + 0x91, 0x3f, 0xf2, 0xd2, 0xf9, 0x65, 0xed, 0x0e \ + } + +/* + * IDE GUID + * {32412632-86cb-44a2-9b5c-50d1417354f5} + */ +#define HV_IDE_GUID \ + .guid = { \ + 0x32, 0x26, 0x41, 0x32, 0xcb, 0x86, 0xa2, 0x44, \ + 0x9b, 0x5c, 0x50, 0xd1, 0x41, 0x73, 0x54, 0xf5 \ + } + +/* + * SCSI GUID + * {ba6163d9-04a1-4d29-b605-72e2ffb1dc7f} + */ +#define HV_SCSI_GUID \ + .guid = { \ + 0xd9, 0x63, 0x61, 0xba, 0xa1, 0x04, 0x29, 0x4d, \ + 0xb6, 0x05, 0x72, 0xe2, 0xff, 0xb1, 0xdc, 0x7f \ + } + +/* + * Shutdown GUID + * {0e0b6031-5213-4934-818b-38d90ced39db} + */ +#define HV_SHUTDOWN_GUID \ + .guid = { \ + 0x31, 0x60, 0x0b, 0x0e, 0x13, 0x52, 0x34, 0x49, \ + 0x81, 0x8b, 0x38, 0xd9, 0x0c, 0xed, 0x39, 0xdb \ + } + +/* + * Time Synch GUID + * {9527E630-D0AE-497b-ADCE-E80AB0175CAF} + */ +#define HV_TS_GUID \ + .guid = { \ + 0x30, 0xe6, 0x27, 0x95, 0xae, 0xd0, 0x7b, 0x49, \ + 0xad, 0xce, 0xe8, 0x0a, 0xb0, 0x17, 0x5c, 0xaf \ + } + +/* + * Heartbeat GUID + * {57164f39-9115-4e78-ab55-382f3bd5422d} + */ +#define HV_HEART_BEAT_GUID \ + .guid = { \ + 0x39, 0x4f, 0x16, 0x57, 0x15, 0x91, 0x78, 0x4e, \ + 0xab, 0x55, 0x38, 0x2f, 0x3b, 0xd5, 0x42, 0x2d \ + } + +/* + * KVP GUID + * {a9a0f4e7-5a45-4d96-b827-8a841e8c03e6} + */ +#define HV_KVP_GUID \ + .guid = { \ + 0xe7, 0xf4, 0xa0, 0xa9, 0x45, 0x5a, 0x96, 0x4d, \ + 0xb8, 0x27, 0x8a, 0x84, 0x1e, 0x8c, 0x3, 0xe6 \ + } + +/* + * Dynamic memory GUID + * {525074dc-8985-46e2-8057-a307dc18a502} + */ +#define HV_DM_GUID \ + .guid = { \ + 0xdc, 0x74, 0x50, 0X52, 0x85, 0x89, 0xe2, 0x46, \ + 0x80, 0x57, 0xa3, 0x07, 0xdc, 0x18, 0xa5, 0x02 \ + } + +/* + * Mouse GUID + * {cfa8b69e-5b4a-4cc0-b98b-8ba1a1f3f95a} + */ +#define HV_MOUSE_GUID \ + .guid = { \ + 0x9e, 0xb6, 0xa8, 0xcf, 0x4a, 0x5b, 0xc0, 0x4c, \ + 0xb9, 0x8b, 0x8b, 0xa1, 0xa1, 0xf3, 0xf9, 0x5a \ + } + /* * Common header for Hyper-V ICs */ -- cgit v1.2.3 From e175435ed281d06ffd56d4edc8a2dd56f8672f07 Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Fri, 25 Jan 2013 15:30:23 -0500 Subject: Revert "libata: export host controller number thru /sys" This reverts commit 1757d902b029a29dfcef63609964385cf8865b5a. Discussion continues upstream. --- include/linux/libata.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index 65ff67e34b77..91c9d109e5f1 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -546,7 +546,6 @@ struct ata_host { void *private_data; struct ata_port_operations *ops; unsigned long flags; - unsigned int host_id; /* user visible host ID */ struct mutex eh_mutex; struct task_struct *eh_owner; -- cgit v1.2.3 From 0bb8f3d6ae621945e6fa2102aa894f72b76a023e Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 25 Jan 2013 21:51:13 +0100 Subject: sysfs: Functions for adding/removing symlinks to/from attribute groups The most convenient way to expose ACPI power resources lists of a device is to put symbolic links to sysfs directories representing those resources into special attribute groups in the device's sysfs directory. For this purpose, it is necessary to be able to add symbolic links to attribute groups. For this reason, add sysfs helper functions for adding/removing symbolic links to/from attribute groups, sysfs_add_link_to_group() and sysfs_remove_link_from_group(), respectively. This change set includes a build fix from David Rientjes. Signed-off-by: Rafael J. Wysocki Acked-by: Greg Kroah-Hartman --- include/linux/sysfs.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h index 381f06db2fe5..e2cee22f578a 100644 --- a/include/linux/sysfs.h +++ b/include/linux/sysfs.h @@ -181,6 +181,10 @@ int sysfs_merge_group(struct kobject *kobj, const struct attribute_group *grp); void sysfs_unmerge_group(struct kobject *kobj, const struct attribute_group *grp); +int sysfs_add_link_to_group(struct kobject *kobj, const char *group_name, + struct kobject *target, const char *link_name); +void sysfs_remove_link_from_group(struct kobject *kobj, const char *group_name, + const char *link_name); void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr); void sysfs_notify_dirent(struct sysfs_dirent *sd); @@ -326,6 +330,18 @@ static inline void sysfs_unmerge_group(struct kobject *kobj, { } +static inline int sysfs_add_link_to_group(struct kobject *kobj, + const char *group_name, struct kobject *target, + const char *link_name) +{ + return 0; +} + +static inline void sysfs_remove_link_from_group(struct kobject *kobj, + const char *group_name, const char *link_name) +{ +} + static inline void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr) { -- cgit v1.2.3 From 58d9a38f6facb28e935ec2747f6d9e9bf4684118 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Mon, 21 Jan 2013 13:20:51 -0800 Subject: PCI: Skip attaching driver in device_add() We want to add PCI devices to the device tree as early as possible but delay attaching drivers. device_add() adds a device to the device hierarchy and (via device_attach()) attaches a matching driver and calls its .probe() method. We want to separate adding the device to the hierarchy from attaching the driver. This patch does that by adding "match_driver" in struct pci_dev. When false, we return failure from pci_bus_match(), which makes device_attach() believe there's no matching driver. Later, we set "match_driver = true" and call device_attach() again, which now attaches the driver and calls its .probe() method. [bhelgaas: changelog, explicitly init dev->match_driver, fold device_attach() call into pci_bus_add_device()] Signed-off-by: Yinghai Lu Signed-off-by: Bjorn Helgaas Acked-by: Rafael J. Wysocki --- include/linux/pci.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 907b455ab603..8ee7e4e46539 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -286,6 +286,7 @@ struct pci_dev { unsigned int irq; struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */ + bool match_driver; /* Skip attaching driver */ /* These fields are used by common fixups */ unsigned int transparent:1; /* Transparent PCI bridge */ unsigned int multifunction:1;/* Part of multi-function device */ -- cgit v1.2.3 From da0aa7169b97d90f4af39a9dc84d58bbe19d7e78 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 25 Jan 2013 17:09:42 -0500 Subject: USB: add usb_hcd_{start,end}_port_resume This patch (as1649) adds a mechanism for host controller drivers to inform usbcore when they have begun or ended resume signalling on a particular root-hub port. The core will then make sure that the root hub does not get runtime-suspended while the port resume is going on. Since commit 596d789a211d134dc5f94d1e5957248c204ef850 (USB: set hub's default autosuspend delay as 0), the system tries to suspend hubs whenever they aren't in use. While a root-hub port is being resumed, the root hub does not appear to be in use. Attempted runtime suspends fail because of the ongoing port resume, but the PM core just keeps on trying over and over again. We want to prevent this wasteful effort. Signed-off-by: Alan Stern Tested-by: Ming Lei Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 2 ++ include/linux/usb/hcd.h | 3 +++ 2 files changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb.h b/include/linux/usb.h index 689b14b26c8d..4d22d0f6167a 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -357,6 +357,8 @@ struct usb_bus { int bandwidth_int_reqs; /* number of Interrupt requests */ int bandwidth_isoc_reqs; /* number of Isoc. requests */ + unsigned resuming_ports; /* bit array: resuming root-hub ports */ + #if defined(CONFIG_USB_MON) || defined(CONFIG_USB_MON_MODULE) struct mon_bus *mon_bus; /* non-null when associated */ int monitored; /* non-zero when monitored */ diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 608050b2545f..0a78df5f6cfd 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -430,6 +430,9 @@ extern void usb_hcd_poll_rh_status(struct usb_hcd *hcd); extern void usb_wakeup_notification(struct usb_device *hdev, unsigned int portnum); +extern void usb_hcd_start_port_resume(struct usb_bus *bus, int portnum); +extern void usb_hcd_end_port_resume(struct usb_bus *bus, int portnum); + /* The D0/D1 toggle bits ... USE WITH CAUTION (they're almost hcd-internal) */ #define usb_gettoggle(dev, ep, out) (((dev)->toggle[out] >> (ep)) & 1) #define usb_dotoggle(dev, ep, out) ((dev)->toggle[out] ^= (1 << (ep))) -- cgit v1.2.3 From fbadc58dd3a52c330c8f3926aa93011bf9d91fa0 Mon Sep 17 00:00:00 2001 From: ShuoX Liu Date: Wed, 23 Jan 2013 21:49:37 +0100 Subject: PM / Runtime: Add new helper function: pm_runtime_active() This boolean function simply returns whether or not the runtime status of the device is 'active'. The typical scenario is driver calls pm_runtime_get firstly, then check pm_runtime_active in atomic environment. Also add entry to Documentation/power/runtime.txt Signed-off-by: Yanmin Zhang Signed-off-by: ShuoX Liu Signed-off-by: Rafael J. Wysocki --- include/linux/pm_runtime.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index f271860c78d5..c785c215abfc 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -80,6 +80,12 @@ static inline bool pm_runtime_suspended(struct device *dev) && !dev->power.disable_depth; } +static inline bool pm_runtime_active(struct device *dev) +{ + return dev->power.runtime_status == RPM_ACTIVE + || dev->power.disable_depth; +} + static inline bool pm_runtime_status_suspended(struct device *dev) { return dev->power.runtime_status == RPM_SUSPENDED; @@ -132,6 +138,7 @@ static inline void pm_runtime_put_noidle(struct device *dev) {} static inline bool device_run_wake(struct device *dev) { return false; } static inline void device_set_run_wake(struct device *dev, bool enable) {} static inline bool pm_runtime_suspended(struct device *dev) { return false; } +static inline bool pm_runtime_active(struct device *dev) { return true; } static inline bool pm_runtime_status_suspended(struct device *dev) { return false; } static inline bool pm_runtime_enabled(struct device *dev) { return false; } -- cgit v1.2.3 From c25fb816298138a4b12c606f0aaa018bdd3cc09c Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Wed, 9 Jan 2013 08:12:46 -0800 Subject: hwmon: Retire SENSORS_LIMIT SENSORS_LIMIT and clamp_val have the same functionality, so retire SENSORS_LIMIT as it is no longer needed. Signed-off-by: Guenter Roeck Acked-by: Jean Delvare --- include/linux/hwmon.h | 12 ------------ 1 file changed, 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hwmon.h b/include/linux/hwmon.h index 82b29ae6ebb0..b2514f70d591 100644 --- a/include/linux/hwmon.h +++ b/include/linux/hwmon.h @@ -20,16 +20,4 @@ struct device *hwmon_device_register(struct device *dev); void hwmon_device_unregister(struct device *dev); -/* Scale user input to sensible values */ -static inline int SENSORS_LIMIT(long value, long low, long high) -{ - if (value < low) - return low; - else if (value > high) - return high; - else - return value; -} - #endif - -- cgit v1.2.3 From 3343b7a6d2cd0a980d0c4a0ce02ef48b6bfcc12a Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Tue, 22 Jan 2013 12:26:27 +0200 Subject: spi/pxa2xx: convert to the common clk framework Convert clk_enable() to clk_prepare_enable() and clk_disable() to clk_disable_unprepare() respectively in order to support the common clk framework. Otherwise we get warnings on the console as the clock is not prepared before it is enabled. In addition we must cache the maximum clock rate to drv_data->max_clk_rate at probe time because clk_get_rate() cannot be called in tasklet context. Signed-off-by: Mika Westerberg Signed-off-by: Mark Brown --- include/linux/spi/pxa2xx_spi.h | 18 ------------------ 1 file changed, 18 deletions(-) (limited to 'include/linux') diff --git a/include/linux/spi/pxa2xx_spi.h b/include/linux/spi/pxa2xx_spi.h index 6b99f09b717d..053b5ba51b25 100644 --- a/include/linux/spi/pxa2xx_spi.h +++ b/include/linux/spi/pxa2xx_spi.h @@ -133,23 +133,5 @@ static inline void pxa_free_dma(int dma_ch) { } -/* - * The CE4100 does not have the clk framework implemented and SPI clock can - * not be switched on/off or the divider changed. - */ -static inline void clk_disable(struct clk *clk) -{ -} - -static inline int clk_enable(struct clk *clk) -{ - return 0; -} - -static inline unsigned long clk_get_rate(struct clk *clk) -{ - return 3686400; -} - #endif #endif -- cgit v1.2.3 From 5cbc7ca987fb3f293203dc14a6c53b91b7c978a5 Mon Sep 17 00:00:00 2001 From: Matthias Brugger Date: Thu, 24 Jan 2013 13:40:41 +0100 Subject: spi: spi-omap2-mcspi.c: Toggle CS after each word This patch allows the board code to define SPI devices which needs to toggle the chip select after every word send. This is needed to get a better resolution reading e.g. an ADC data stream. Apart from that, as in the normal code CS is controlled by software, a transfer is done much faster. Signed-off-by: Matthias Brugger Signed-off-by: Mark Brown --- include/linux/platform_data/spi-omap2-mcspi.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/spi-omap2-mcspi.h b/include/linux/platform_data/spi-omap2-mcspi.h index a65572d53211..c100456eab17 100644 --- a/include/linux/platform_data/spi-omap2-mcspi.h +++ b/include/linux/platform_data/spi-omap2-mcspi.h @@ -22,6 +22,9 @@ struct omap2_mcspi_dev_attr { struct omap2_mcspi_device_config { unsigned turbo_mode:1; + + /* toggle chip select after every word */ + unsigned cs_per_word:1; }; #endif -- cgit v1.2.3 From 996a953de02ffb852c9ac736f4e892008ed68884 Mon Sep 17 00:00:00 2001 From: Fabio Baltieri Date: Tue, 18 Dec 2012 18:50:55 +0100 Subject: can: add tx/rx LED trigger support This patch implements the functions to add two LED triggers, named -tx and -rx, to a canbus device driver. Triggers are called from specific handlers by each CAN device driver and can be disabled altogether with a Kconfig option. The implementation keeps the LED on when the interface is UP and blinks the LED on network activity at a configurable rate. This only supports can-dev based drivers, as it uses some support field in the can_priv structure. Supported drivers should call devm_can_led_init() and can_led_event() as needed. Cleanup is handled automatically by devres, so no *_exit function is needed. Supported events are: - CAN_LED_EVENT_OPEN: turn on tx/rx LEDs - CAN_LED_EVENT_STOP: turn off tx/rx LEDs - CAN_LED_EVENT_TX: trigger tx LED blink - CAN_LED_EVENT_RX: trigger tx LED blink Cc: Wolfgang Grandegger Cc: Marc Kleine-Budde Signed-off-by: Fabio Baltieri Acked-by: Oliver Hartkopp Signed-off-by: Marc Kleine-Budde --- include/linux/can/dev.h | 8 ++++++++ include/linux/can/led.h | 42 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 50 insertions(+) create mode 100644 include/linux/can/led.h (limited to 'include/linux') diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h index 2b2fc345afca..7747d9bcdc84 100644 --- a/include/linux/can/dev.h +++ b/include/linux/can/dev.h @@ -16,6 +16,7 @@ #include #include #include +#include /* * CAN mode @@ -52,6 +53,13 @@ struct can_priv { unsigned int echo_skb_max; struct sk_buff **echo_skb; + +#ifdef CONFIG_CAN_LEDS + struct led_trigger *tx_led_trig; + char tx_led_trig_name[CAN_LED_NAME_SZ]; + struct led_trigger *rx_led_trig; + char rx_led_trig_name[CAN_LED_NAME_SZ]; +#endif }; /* diff --git a/include/linux/can/led.h b/include/linux/can/led.h new file mode 100644 index 000000000000..12d5549abb95 --- /dev/null +++ b/include/linux/can/led.h @@ -0,0 +1,42 @@ +/* + * Copyright 2012, Fabio Baltieri + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef CAN_LED_H +#define CAN_LED_H + +#include +#include + +enum can_led_event { + CAN_LED_EVENT_OPEN, + CAN_LED_EVENT_STOP, + CAN_LED_EVENT_TX, + CAN_LED_EVENT_RX, +}; + +#ifdef CONFIG_CAN_LEDS + +/* keep space for interface name + "-tx"/"-rx" suffix and null terminator */ +#define CAN_LED_NAME_SZ (IFNAMSIZ + 4) + +void can_led_event(struct net_device *netdev, enum can_led_event event); +void devm_can_led_init(struct net_device *netdev); + +#else + +static inline void can_led_event(struct net_device *netdev, + enum can_led_event event) +{ +} +static inline void devm_can_led_init(struct net_device *netdev) +{ +} + +#endif + +#endif -- cgit v1.2.3 From bf03a5379cd3492fbeca42111340581ba9dee0b8 Mon Sep 17 00:00:00 2001 From: Kurt Van Dijck Date: Tue, 18 Dec 2012 18:50:56 +0100 Subject: can: export a safe netdev_priv wrapper for candev In net_device notifier calls, it was impossible to determine if a CAN device is based on candev in a safe way. This patch adds such test in order to access candev storage from within those notifiers. Signed-off-by: Kurt Van Dijck Acked-by: Oliver Hartkopp Signed-off-by: Fabio Baltieri Signed-off-by: Marc Kleine-Budde --- include/linux/can/dev.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h index 7747d9bcdc84..fb0ab651a041 100644 --- a/include/linux/can/dev.h +++ b/include/linux/can/dev.h @@ -106,6 +106,9 @@ u8 can_len2dlc(u8 len); struct net_device *alloc_candev(int sizeof_priv, unsigned int echo_skb_max); void free_candev(struct net_device *dev); +/* a candev safe wrapper around netdev_priv */ +struct can_priv *safe_candev_priv(struct net_device *dev); + int open_candev(struct net_device *dev); void close_candev(struct net_device *dev); -- cgit v1.2.3 From a1ef7bd9fce8aba8e4701e60208148fb3bc9bdd4 Mon Sep 17 00:00:00 2001 From: Kurt Van Dijck Date: Tue, 18 Dec 2012 18:50:57 +0100 Subject: can: rename LED trigger name on netdev renames The LED trigger name for CAN devices is based on the initial CAN device name, but does never change. The LED trigger name is not guaranteed to be unique in case of hotplugging CAN devices. This patch tries to address this problem by modifying the LED trigger name according to the CAN device name when the latter changes. v1 - Kurt Van Dijck v2 - Fabio Baltieri - remove rename blocking if trigger is bound - use led-subsystem function for the actual rename (still WiP) - call init/exit functions from dev.c v3 - Kurt Van Dijck - safe operation for non-candev based devices (vcan, slcan) based on earlier patch v4 - Kurt Van Dijck - trivial patch mistakes fixed Signed-off-by: Kurt Van Dijck Signed-off-by: Fabio Baltieri Signed-off-by: Marc Kleine-Budde --- include/linux/can/led.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/can/led.h b/include/linux/can/led.h index 12d5549abb95..9c1167baf273 100644 --- a/include/linux/can/led.h +++ b/include/linux/can/led.h @@ -26,6 +26,8 @@ enum can_led_event { void can_led_event(struct net_device *netdev, enum can_led_event event); void devm_can_led_init(struct net_device *netdev); +int __init can_led_notifier_init(void); +void __exit can_led_notifier_exit(void); #else @@ -36,6 +38,13 @@ static inline void can_led_event(struct net_device *netdev, static inline void devm_can_led_init(struct net_device *netdev) { } +static inline int can_led_notifier_init(void) +{ + return 0; +} +static inline void can_led_notifier_exit(void) +{ +} #endif -- cgit v1.2.3 From 156c2bb9f88065c8da78814f98fde665a5cbb527 Mon Sep 17 00:00:00 2001 From: Oliver Hartkopp Date: Thu, 17 Jan 2013 18:43:39 +0100 Subject: can: add private data space for CAN sk_buffs The struct can_skb_priv is used to transport additional information along with the stored struct can(fd)_frame that can not be contained in existing struct sk_buff elements. can_skb_priv is located in the skb headroom, which does not touch the existing CAN sk_buff usage with skb->data and skb->len, so that even out-of-tree CAN drivers can be used without changes. Btw. out-of-tree CAN drivers without can_skb_priv in the sk_buff headroom would not support features based on can_skb_priv. The can_skb_priv->ifindex contains the first interface where the CAN frame appeared on the local host. Unfortunately skb->skb_iif can not be used as this value is overwritten in every netif_receive_skb() call. Signed-off-by: Oliver Hartkopp Signed-off-by: Marc Kleine-Budde --- include/linux/can/skb.h | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 include/linux/can/skb.h (limited to 'include/linux') diff --git a/include/linux/can/skb.h b/include/linux/can/skb.h new file mode 100644 index 000000000000..4b0f24d3a878 --- /dev/null +++ b/include/linux/can/skb.h @@ -0,0 +1,35 @@ +/* + * linux/can/skb.h + * + * Definitions for the CAN network socket buffer + * + * Copyright (C) 2012 Oliver Hartkopp + * + */ + +#ifndef CAN_SKB_H +#define CAN_SKB_H + +#include +#include + +/* + * The struct can_skb_priv is used to transport additional information along + * with the stored struct can(fd)_frame that can not be contained in existing + * struct sk_buff elements. + * N.B. that this information must not be modified in cloned CAN sk_buffs. + * To modify the CAN frame content or the struct can_skb_priv content + * skb_copy() needs to be used instead of skb_clone(). + */ + +/** + * struct can_skb_priv - private additional data inside CAN sk_buffs + * @ifindex: ifindex of the first interface the CAN frame appeared on + * @cf: align to the following CAN frame at skb->data + */ +struct can_skb_priv { + int ifindex; + struct can_frame cf[0]; +}; + +#endif /* CAN_SKB_H */ -- cgit v1.2.3 From 95a79fd458b85132c25e351d45037ec9643312b2 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Mon, 7 Jan 2013 18:12:14 +0100 Subject: context_tracking: Export context state for generic vtime Export the context state: whether we run in user / kernel from the context tracking subsystem point of view. This is going to be used by the generic virtual cputime accounting subsystem that is needed to implement the full dynticks. Signed-off-by: Frederic Weisbecker Cc: Andrew Morton Cc: Ingo Molnar Cc: Li Zhong Cc: Namhyung Kim Cc: Paul E. McKenney Cc: Paul Gortmaker Cc: Peter Zijlstra Cc: Steven Rostedt Cc: Thomas Gleixner --- include/linux/context_tracking.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'include/linux') diff --git a/include/linux/context_tracking.h b/include/linux/context_tracking.h index e24339ccb7f0..b28d161c1091 100644 --- a/include/linux/context_tracking.h +++ b/include/linux/context_tracking.h @@ -3,12 +3,40 @@ #ifdef CONFIG_CONTEXT_TRACKING #include +#include + +struct context_tracking { + /* + * When active is false, probes are unset in order + * to minimize overhead: TIF flags are cleared + * and calls to user_enter/exit are ignored. This + * may be further optimized using static keys. + */ + bool active; + enum { + IN_KERNEL = 0, + IN_USER, + } state; +}; + +DECLARE_PER_CPU(struct context_tracking, context_tracking); + +static inline bool context_tracking_in_user(void) +{ + return __this_cpu_read(context_tracking.state) == IN_USER; +} + +static inline bool context_tracking_active(void) +{ + return __this_cpu_read(context_tracking.active); +} extern void user_enter(void); extern void user_exit(void); extern void context_tracking_task_switch(struct task_struct *prev, struct task_struct *next); #else +static inline bool context_tracking_in_user(void) { return false; } static inline void user_enter(void) { } static inline void user_exit(void) { } static inline void context_tracking_task_switch(struct task_struct *prev, -- cgit v1.2.3 From d817ac4e181710cd02b582b759d3123ad2cfa8d8 Mon Sep 17 00:00:00 2001 From: Wei WANG Date: Wed, 23 Jan 2013 09:51:04 +0800 Subject: mfd: rtsx: Add output voltage switch hook Different card reader has different method to switch output voltage, add this callback to let the card reader implement its individual switch function. This is needed as rtl8411 has a specific switch output voltage procedure. Signed-off-by: Wei WANG Signed-off-by: Samuel Ortiz --- include/linux/mfd/rtsx_pci.h | 24 ++++++++++++++++++++---- 1 file changed, 20 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h index 060b721fcbfb..271b6e5654af 100644 --- a/include/linux/mfd/rtsx_pci.h +++ b/include/linux/mfd/rtsx_pci.h @@ -158,10 +158,9 @@ #define SG_TRANS_DATA (0x02 << 4) #define SG_LINK_DESC (0x03 << 4) -/* SD bank voltage */ -#define SD_IO_3V3 0 -#define SD_IO_1V8 1 - +/* Output voltage */ +#define OUTPUT_3V3 0 +#define OUTPUT_1V8 1 /* Card Clock Enable Register */ #define SD_CLK_EN 0x04 @@ -201,6 +200,20 @@ #define CHANGE_CLK 0x01 /* LDO_CTL */ +#define BPP_ASIC_1V7 0x00 +#define BPP_ASIC_1V8 0x01 +#define BPP_ASIC_1V9 0x02 +#define BPP_ASIC_2V0 0x03 +#define BPP_ASIC_2V7 0x04 +#define BPP_ASIC_2V8 0x05 +#define BPP_ASIC_3V2 0x06 +#define BPP_ASIC_3V3 0x07 +#define BPP_REG_TUNED18 0x07 +#define BPP_TUNED18_SHIFT_8402 5 +#define BPP_TUNED18_SHIFT_8411 4 +#define BPP_PAD_MASK 0x04 +#define BPP_PAD_3V3 0x04 +#define BPP_PAD_1V8 0x00 #define BPP_LDO_POWB 0x03 #define BPP_LDO_ON 0x00 #define BPP_LDO_SUSPEND 0x02 @@ -688,6 +701,8 @@ struct pcr_ops { int (*disable_auto_blink)(struct rtsx_pcr *pcr); int (*card_power_on)(struct rtsx_pcr *pcr, int card); int (*card_power_off)(struct rtsx_pcr *pcr, int card); + int (*switch_output_voltage)(struct rtsx_pcr *pcr, + u8 voltage); unsigned int (*cd_deglitch)(struct rtsx_pcr *pcr); }; @@ -783,6 +798,7 @@ int rtsx_pci_switch_clock(struct rtsx_pcr *pcr, unsigned int card_clock, u8 ssc_depth, bool initial_mode, bool double_clk, bool vpclk); int rtsx_pci_card_power_on(struct rtsx_pcr *pcr, int card); int rtsx_pci_card_power_off(struct rtsx_pcr *pcr, int card); +int rtsx_pci_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage); unsigned int rtsx_pci_card_exist(struct rtsx_pcr *pcr); void rtsx_pci_complete_unfinished_transfer(struct rtsx_pcr *pcr); -- cgit v1.2.3 From ab4e8f8b7bdfeff0c961fdbbdacb262d68f094c0 Mon Sep 17 00:00:00 2001 From: Wei WANG Date: Wed, 23 Jan 2013 09:51:06 +0800 Subject: mfd: rtsx: Add clock divider hook Add callback function conv_clk_and_div_n to convert between SSC clock and its divider N. For rtl8411, the formula to calculate SSC clock divider N is different with the other card reader models. Signed-off-by: Wei WANG Signed-off-by: Samuel Ortiz --- include/linux/mfd/rtsx_common.h | 3 +++ include/linux/mfd/rtsx_pci.h | 1 + 2 files changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/rtsx_common.h b/include/linux/mfd/rtsx_common.h index a8d393e3066b..2b13970596f5 100644 --- a/include/linux/mfd/rtsx_common.h +++ b/include/linux/mfd/rtsx_common.h @@ -38,6 +38,9 @@ #define RTSX_SD_CARD 0 #define RTSX_MS_CARD 1 +#define CLK_TO_DIV_N 0 +#define DIV_N_TO_CLK 1 + struct platform_device; struct rtsx_slot { diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h index 271b6e5654af..4b117a3f54d4 100644 --- a/include/linux/mfd/rtsx_pci.h +++ b/include/linux/mfd/rtsx_pci.h @@ -704,6 +704,7 @@ struct pcr_ops { int (*switch_output_voltage)(struct rtsx_pcr *pcr, u8 voltage); unsigned int (*cd_deglitch)(struct rtsx_pcr *pcr); + int (*conv_clk_and_div_n)(int clk, int dir); }; enum PDEV_STAT {PDEV_STAT_IDLE, PDEV_STAT_RUN}; -- cgit v1.2.3 From 90f45e4e729a7ffaa3ed2423834aad612870b427 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Thu, 10 Jan 2013 05:24:49 -0800 Subject: rcu: Remove obsolete Kconfig option from comment Signed-off-by: Paul E. McKenney --- include/linux/rcupdate.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 275aa3f1062d..7e12dbaa1457 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -749,7 +749,7 @@ static inline void rcu_preempt_sleep_check(void) * preemptible RCU implementations (TREE_PREEMPT_RCU and TINY_PREEMPT_RCU) * in CONFIG_PREEMPT kernel builds, RCU read-side critical sections may * be preempted, but explicit blocking is illegal. Finally, in preemptible - * RCU implementations in real-time (CONFIG_PREEMPT_RT) kernel builds, + * RCU implementations in real-time (with -rt patchset) kernel builds, * RCU read-side critical sections may be preempted and they may also * block, but only when acquiring spinlocks that are subject to priority * inheritance. -- cgit v1.2.3 From 0a8c290ac58a86d5e1f2193abcd4d74ec075e20c Mon Sep 17 00:00:00 2001 From: Ashish Jangam Date: Fri, 25 Jan 2013 14:03:49 +0530 Subject: mfd: da9052/53 lockup fix An issue has been reported where the PMIC either locks up or fails to respond following a system Reset. This could result in a second write in which the bus writes the current content of the write buffer to address of the last I2C access. The failure case is where this unwanted write transfers incorrect data to a critical register. This patch fixes this issue to by following any read or write with a dummy read to a safe register address. A safe register address is one where the contents will not affect the operation of the system. Signed-off-by: Ashish Jangam Signed-off-by: Samuel Ortiz --- include/linux/mfd/da9052/da9052.h | 66 ++++++++++++++++++++++++++++++++++++--- include/linux/mfd/da9052/reg.h | 3 ++ 2 files changed, 65 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/da9052/da9052.h b/include/linux/mfd/da9052/da9052.h index 86dd93de6ff2..786d02eb79d2 100644 --- a/include/linux/mfd/da9052/da9052.h +++ b/include/linux/mfd/da9052/da9052.h @@ -99,6 +99,9 @@ struct da9052 { u8 chip_id; int chip_irq; + + /* SOC I/O transfer related fixes for DA9052/53 */ + int (*fix_io) (struct da9052 *da9052, unsigned char reg); }; /* ADC API */ @@ -113,32 +116,87 @@ static inline int da9052_reg_read(struct da9052 *da9052, unsigned char reg) ret = regmap_read(da9052->regmap, reg, &val); if (ret < 0) return ret; + + if (da9052->fix_io) { + ret = da9052->fix_io(da9052, reg); + if (ret < 0) + return ret; + } + return val; } static inline int da9052_reg_write(struct da9052 *da9052, unsigned char reg, unsigned char val) { - return regmap_write(da9052->regmap, reg, val); + int ret; + + ret = regmap_write(da9052->regmap, reg, val); + if (ret < 0) + return ret; + + if (da9052->fix_io) { + ret = da9052->fix_io(da9052, reg); + if (ret < 0) + return ret; + } + + return ret; } static inline int da9052_group_read(struct da9052 *da9052, unsigned char reg, unsigned reg_cnt, unsigned char *val) { - return regmap_bulk_read(da9052->regmap, reg, val, reg_cnt); + int ret; + + ret = regmap_bulk_read(da9052->regmap, reg, val, reg_cnt); + if (ret < 0) + return ret; + + if (da9052->fix_io) { + ret = da9052->fix_io(da9052, reg); + if (ret < 0) + return ret; + } + + return ret; } static inline int da9052_group_write(struct da9052 *da9052, unsigned char reg, unsigned reg_cnt, unsigned char *val) { - return regmap_raw_write(da9052->regmap, reg, val, reg_cnt); + int ret; + + ret = regmap_raw_write(da9052->regmap, reg, val, reg_cnt); + if (ret < 0) + return ret; + + if (da9052->fix_io) { + ret = da9052->fix_io(da9052, reg); + if (ret < 0) + return ret; + } + + return ret; } static inline int da9052_reg_update(struct da9052 *da9052, unsigned char reg, unsigned char bit_mask, unsigned char reg_val) { - return regmap_update_bits(da9052->regmap, reg, bit_mask, reg_val); + int ret; + + ret = regmap_update_bits(da9052->regmap, reg, bit_mask, reg_val); + if (ret < 0) + return ret; + + if (da9052->fix_io) { + ret = da9052->fix_io(da9052, reg); + if (ret < 0) + return ret; + } + + return ret; } int da9052_device_init(struct da9052 *da9052, u8 chip_id); diff --git a/include/linux/mfd/da9052/reg.h b/include/linux/mfd/da9052/reg.h index b97f7309d7f6..c4dd3a8add21 100644 --- a/include/linux/mfd/da9052/reg.h +++ b/include/linux/mfd/da9052/reg.h @@ -34,6 +34,9 @@ #define DA9052_STATUS_C_REG 3 #define DA9052_STATUS_D_REG 4 +/* PARK REGISTER */ +#define DA9052_PARK_REGISTER DA9052_STATUS_D_REG + /* EVENT REGISTERS */ #define DA9052_EVENT_A_REG 5 #define DA9052_EVENT_B_REG 6 -- cgit v1.2.3 From c61a2810a2161986353705b44d9503e6bb079f4f Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 28 Dec 2012 18:58:39 -0800 Subject: userns: Avoid recursion in put_user_ns When freeing a deeply nested user namespace free_user_ns calls put_user_ns on it's parent which may in turn call free_user_ns again. When -fno-optimize-sibling-calls is passed to gcc one stack frame per user namespace is left on the stack, potentially overflowing the kernel stack. CONFIG_FRAME_POINTER forces -fno-optimize-sibling-calls so we can't count on gcc to optimize this code. Remove struct kref and use a plain atomic_t. Making the code more flexible and easier to comprehend. Make the loop in free_user_ns explict to guarantee that the stack does not overflow with CONFIG_FRAME_POINTER enabled. I have tested this fix with a simple program that uses unshare to create a deeply nested user namespace structure and then calls exit. With 1000 nesteuser namespaces before this change running my test program causes the kernel to die a horrible death. With 10,000,000 nested user namespaces after this change my test program runs to completion and causes no harm. Acked-by: Serge Hallyn Pointed-out-by: Vasily Kulikov Signed-off-by: "Eric W. Biederman" --- include/linux/user_namespace.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/user_namespace.h b/include/linux/user_namespace.h index b9bd2e6c73cc..4ce009324933 100644 --- a/include/linux/user_namespace.h +++ b/include/linux/user_namespace.h @@ -21,7 +21,7 @@ struct user_namespace { struct uid_gid_map uid_map; struct uid_gid_map gid_map; struct uid_gid_map projid_map; - struct kref kref; + atomic_t count; struct user_namespace *parent; kuid_t owner; kgid_t group; @@ -35,18 +35,18 @@ extern struct user_namespace init_user_ns; static inline struct user_namespace *get_user_ns(struct user_namespace *ns) { if (ns) - kref_get(&ns->kref); + atomic_inc(&ns->count); return ns; } extern int create_user_ns(struct cred *new); extern int unshare_userns(unsigned long unshare_flags, struct cred **new_cred); -extern void free_user_ns(struct kref *kref); +extern void free_user_ns(struct user_namespace *ns); static inline void put_user_ns(struct user_namespace *ns) { - if (ns) - kref_put(&ns->kref, free_user_ns); + if (ns && atomic_dec_and_test(&ns->count)) + free_user_ns(ns); } struct seq_operations; -- cgit v1.2.3 From 9c2251dd4b7feba14d35835c6835024840b1f76b Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sat, 12 Jan 2013 10:35:00 +0000 Subject: iio:light:tsl2563 move out of staging This driver is simple, uses the latest interfaces and contains few if any controversial elements. All of its interfaces have been in place for a long time now. Hence let's move it out of staging. Signed-off-by: Jonathan Cameron Acked-by: Peter Meerwald --- include/linux/platform_data/tsl2563.h | 8 ++++++++ 1 file changed, 8 insertions(+) create mode 100644 include/linux/platform_data/tsl2563.h (limited to 'include/linux') diff --git a/include/linux/platform_data/tsl2563.h b/include/linux/platform_data/tsl2563.h new file mode 100644 index 000000000000..c90d7a09dda7 --- /dev/null +++ b/include/linux/platform_data/tsl2563.h @@ -0,0 +1,8 @@ +#ifndef __LINUX_TSL2563_H +#define __LINUX_TSL2563_H + +struct tsl2563_platform_data { + int cover_comp_gain; +}; + +#endif /* __LINUX_TSL2563_H */ -- cgit v1.2.3 From abf917cd91cbb73952758f9741e2fa65002a48ee Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Wed, 25 Jul 2012 07:56:04 +0200 Subject: cputime: Generic on-demand virtual cputime accounting If we want to stop the tick further idle, we need to be able to account the cputime without using the tick. Virtual based cputime accounting solves that problem by hooking into kernel/user boundaries. However implementing CONFIG_VIRT_CPU_ACCOUNTING require low level hooks and involves more overhead. But we already have a generic context tracking subsystem that is required for RCU needs by archs which plan to shut down the tick outside idle. This patch implements a generic virtual based cputime accounting that relies on these generic kernel/user hooks. There are some upsides of doing this: - This requires no arch code to implement CONFIG_VIRT_CPU_ACCOUNTING if context tracking is already built (already necessary for RCU in full tickless mode). - We can rely on the generic context tracking subsystem to dynamically (de)activate the hooks, so that we can switch anytime between virtual and tick based accounting. This way we don't have the overhead of the virtual accounting when the tick is running periodically. And one downside: - There is probably more overhead than a native virtual based cputime accounting. But this relies on hooks that are already set anyway. Signed-off-by: Frederic Weisbecker Cc: Andrew Morton Cc: Ingo Molnar Cc: Li Zhong Cc: Namhyung Kim Cc: Paul E. McKenney Cc: Paul Gortmaker Cc: Peter Zijlstra Cc: Steven Rostedt Cc: Thomas Gleixner --- include/linux/kernel_stat.h | 2 +- include/linux/vtime.h | 16 ++++++++++++++++ 2 files changed, 17 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h index 66b70780e910..ed5f6ed6eb77 100644 --- a/include/linux/kernel_stat.h +++ b/include/linux/kernel_stat.h @@ -127,7 +127,7 @@ extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t) extern void account_steal_time(cputime_t); extern void account_idle_time(cputime_t); -#ifdef CONFIG_VIRT_CPU_ACCOUNTING +#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE static inline void account_process_tick(struct task_struct *tsk, int user) { vtime_account_user(tsk); diff --git a/include/linux/vtime.h b/include/linux/vtime.h index ae30ab58431a..21ef703d1b25 100644 --- a/include/linux/vtime.h +++ b/include/linux/vtime.h @@ -14,9 +14,25 @@ extern void vtime_account(struct task_struct *tsk); static inline void vtime_task_switch(struct task_struct *prev) { } static inline void vtime_account_system(struct task_struct *tsk) { } static inline void vtime_account_system_irqsafe(struct task_struct *tsk) { } +static inline void vtime_account_user(struct task_struct *tsk) { } static inline void vtime_account(struct task_struct *tsk) { } #endif +#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN +static inline void arch_vtime_task_switch(struct task_struct *tsk) { } +static inline void vtime_user_enter(struct task_struct *tsk) +{ + vtime_account_system(tsk); +} +static inline void vtime_user_exit(struct task_struct *tsk) +{ + vtime_account_user(tsk); +} +#else +static inline void vtime_user_enter(struct task_struct *tsk) { } +static inline void vtime_user_exit(struct task_struct *tsk) { } +#endif + #ifdef CONFIG_IRQ_TIME_ACCOUNTING extern void irqtime_account_irq(struct task_struct *tsk); #else -- cgit v1.2.3 From 3f4724ea85b7d9055a9976fa8f30b471bdfbca93 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Mon, 16 Jul 2012 18:00:34 +0200 Subject: cputime: Allow dynamic switch between tick/virtual based cputime accounting Allow to dynamically switch between tick and virtual based cputime accounting. This way we can provide a kind of "on-demand" virtual based cputime accounting. In this mode, the kernel relies on the context tracking subsystem to dynamically probe on kernel boundaries. This is in preparation for being able to stop the timer tick in more places than just the idle state. Doing so will depend on CONFIG_VIRT_CPU_ACCOUNTING_GEN which makes it possible to account the cputime without the tick by hooking on kernel/user boundaries. Depending whether the tick is stopped or not, we can switch between tick and vtime based accounting anytime in order to minimize the overhead associated to user hooks. Signed-off-by: Frederic Weisbecker Cc: Andrew Morton Cc: Ingo Molnar Cc: Li Zhong Cc: Namhyung Kim Cc: Paul E. McKenney Cc: Paul Gortmaker Cc: Peter Zijlstra Cc: Steven Rostedt Cc: Thomas Gleixner --- include/linux/vtime.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/vtime.h b/include/linux/vtime.h index 21ef703d1b25..5368af9bdf06 100644 --- a/include/linux/vtime.h +++ b/include/linux/vtime.h @@ -10,12 +10,20 @@ extern void vtime_account_system_irqsafe(struct task_struct *tsk); extern void vtime_account_idle(struct task_struct *tsk); extern void vtime_account_user(struct task_struct *tsk); extern void vtime_account(struct task_struct *tsk); + +#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN +extern bool vtime_accounting_enabled(void); #else +static inline bool vtime_accounting_enabled(void) { return true; } +#endif + +#else /* !CONFIG_VIRT_CPU_ACCOUNTING */ static inline void vtime_task_switch(struct task_struct *prev) { } static inline void vtime_account_system(struct task_struct *tsk) { } static inline void vtime_account_system_irqsafe(struct task_struct *tsk) { } static inline void vtime_account_user(struct task_struct *tsk) { } static inline void vtime_account(struct task_struct *tsk) { } +static inline bool vtime_accounting_enabled(void) { return false; } #endif #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN -- cgit v1.2.3 From 6fac4829ce0ef9b7f24369086ce5f0e9f38d37bc Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Tue, 13 Nov 2012 14:20:55 +0100 Subject: cputime: Use accessors to read task cputime stats This is in preparation for the full dynticks feature. While remotely reading the cputime of a task running in a full dynticks CPU, we'll need to do some extra-computation. This way we can account the time it spent tickless in userspace since its last cputime snapshot. Signed-off-by: Frederic Weisbecker Cc: Andrew Morton Cc: Ingo Molnar Cc: Li Zhong Cc: Namhyung Kim Cc: Paul E. McKenney Cc: Paul Gortmaker Cc: Peter Zijlstra Cc: Steven Rostedt Cc: Thomas Gleixner --- include/linux/sched.h | 23 +++++++++++++++++++++++ include/linux/tsacct_kern.h | 3 +++ 2 files changed, 26 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 6fc8f45de4e9..a9c608b6154e 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1792,6 +1792,29 @@ static inline void put_task_struct(struct task_struct *t) __put_task_struct(t); } +static inline cputime_t task_gtime(struct task_struct *t) +{ + return t->gtime; +} + +static inline void task_cputime(struct task_struct *t, + cputime_t *utime, cputime_t *stime) +{ + if (utime) + *utime = t->utime; + if (stime) + *stime = t->stime; +} + +static inline void task_cputime_scaled(struct task_struct *t, + cputime_t *utimescaled, + cputime_t *stimescaled) +{ + if (utimescaled) + *utimescaled = t->utimescaled; + if (stimescaled) + *stimescaled = t->stimescaled; +} extern void task_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st); extern void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st); diff --git a/include/linux/tsacct_kern.h b/include/linux/tsacct_kern.h index 44893e5ec8f7..3251965bf4cc 100644 --- a/include/linux/tsacct_kern.h +++ b/include/linux/tsacct_kern.h @@ -23,12 +23,15 @@ static inline void bacct_add_tsk(struct user_namespace *user_ns, #ifdef CONFIG_TASK_XACCT extern void xacct_add_tsk(struct taskstats *stats, struct task_struct *p); extern void acct_update_integrals(struct task_struct *tsk); +extern void acct_account_cputime(struct task_struct *tsk); extern void acct_clear_integrals(struct task_struct *tsk); #else static inline void xacct_add_tsk(struct taskstats *stats, struct task_struct *p) {} static inline void acct_update_integrals(struct task_struct *tsk) {} +static inline void acct_account_cputime(struct task_struct *tsk) +{} static inline void acct_clear_integrals(struct task_struct *tsk) {} #endif /* CONFIG_TASK_XACCT */ -- cgit v1.2.3 From c11f11fcbdb5be790c565aed46411486a7586afc Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Mon, 21 Jan 2013 00:50:22 +0100 Subject: kvm: Prepare to add generic guest entry/exit callbacks Do some ground preparatory work before adding guest_enter() and guest_exit() context tracking callbacks. Those will be later used to read the guest cputime safely when we run in full dynticks mode. Signed-off-by: Frederic Weisbecker Cc: Andrew Morton Cc: Gleb Natapov Cc: Ingo Molnar Cc: Li Zhong Cc: Marcelo Tosatti Cc: Namhyung Kim Cc: Paul E. McKenney Cc: Paul Gortmaker Cc: Peter Zijlstra Cc: Steven Rostedt Cc: Thomas Gleixner --- include/linux/kvm_host.h | 39 ++++++++++++++++++++++++++++++--------- include/linux/vtime.h | 2 -- 2 files changed, 30 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 2c497ab0d03d..4fe2396401da 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -22,6 +22,7 @@ #include #include #include +#include #include #include @@ -740,15 +741,36 @@ static inline int kvm_deassign_device(struct kvm *kvm, } #endif /* CONFIG_IOMMU_API */ -static inline void kvm_guest_enter(void) +static inline void guest_enter(void) { - BUG_ON(preemptible()); /* * This is running in ioctl context so we can avoid * the call to vtime_account() with its unnecessary idle check. */ - vtime_account_system_irqsafe(current); + vtime_account_system(current); current->flags |= PF_VCPU; +} + +static inline void guest_exit(void) +{ + /* + * This is running in ioctl context so we can avoid + * the call to vtime_account() with its unnecessary idle check. + */ + vtime_account_system(current); + current->flags &= ~PF_VCPU; +} + +static inline void kvm_guest_enter(void) +{ + unsigned long flags; + + BUG_ON(preemptible()); + + local_irq_save(flags); + guest_enter(); + local_irq_restore(flags); + /* KVM does not hold any references to rcu protected data when it * switches CPU into a guest mode. In fact switching to a guest mode * is very similar to exiting to userspase from rcu point of view. In @@ -761,12 +783,11 @@ static inline void kvm_guest_enter(void) static inline void kvm_guest_exit(void) { - /* - * This is running in ioctl context so we can avoid - * the call to vtime_account() with its unnecessary idle check. - */ - vtime_account_system_irqsafe(current); - current->flags &= ~PF_VCPU; + unsigned long flags; + + local_irq_save(flags); + guest_exit(); + local_irq_restore(flags); } /* diff --git a/include/linux/vtime.h b/include/linux/vtime.h index 5368af9bdf06..bb50c3ca0d79 100644 --- a/include/linux/vtime.h +++ b/include/linux/vtime.h @@ -6,7 +6,6 @@ struct task_struct; #ifdef CONFIG_VIRT_CPU_ACCOUNTING extern void vtime_task_switch(struct task_struct *prev); extern void vtime_account_system(struct task_struct *tsk); -extern void vtime_account_system_irqsafe(struct task_struct *tsk); extern void vtime_account_idle(struct task_struct *tsk); extern void vtime_account_user(struct task_struct *tsk); extern void vtime_account(struct task_struct *tsk); @@ -20,7 +19,6 @@ static inline bool vtime_accounting_enabled(void) { return true; } #else /* !CONFIG_VIRT_CPU_ACCOUNTING */ static inline void vtime_task_switch(struct task_struct *prev) { } static inline void vtime_account_system(struct task_struct *tsk) { } -static inline void vtime_account_system_irqsafe(struct task_struct *tsk) { } static inline void vtime_account_user(struct task_struct *tsk) { } static inline void vtime_account(struct task_struct *tsk) { } static inline bool vtime_accounting_enabled(void) { return false; } -- cgit v1.2.3 From 6a61671bb2f3a1bd12cd17b8fca811a624782632 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Sun, 16 Dec 2012 20:00:34 +0100 Subject: cputime: Safely read cputime of full dynticks CPUs While remotely reading the cputime of a task running in a full dynticks CPU, the values stored in utime/stime fields of struct task_struct may be stale. Its values may be those of the last kernel <-> user transition time snapshot and we need to add the tickless time spent since this snapshot. To fix this, flush the cputime of the dynticks CPUs on kernel <-> user transition and record the time / context where we did this. Then on top of this snapshot and the current time, perform the fixup on the reader side from task_times() accessors. Signed-off-by: Frederic Weisbecker Cc: Andrew Morton Cc: Ingo Molnar Cc: Li Zhong Cc: Namhyung Kim Cc: Paul E. McKenney Cc: Paul Gortmaker Cc: Peter Zijlstra Cc: Steven Rostedt Cc: Thomas Gleixner [fixed kvm module related build errors] Signed-off-by: Sedat Dilek --- include/linux/hardirq.h | 4 ++-- include/linux/init_task.h | 11 +++++++++++ include/linux/kvm_host.h | 20 ++++++++++++++++++-- include/linux/sched.h | 27 ++++++++++++++++++++++----- include/linux/vtime.h | 47 +++++++++++++++++++++++------------------------ 5 files changed, 76 insertions(+), 33 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hardirq.h b/include/linux/hardirq.h index 624ef3f45c8e..7105d5cbb762 100644 --- a/include/linux/hardirq.h +++ b/include/linux/hardirq.h @@ -153,7 +153,7 @@ extern void rcu_nmi_exit(void); */ #define __irq_enter() \ do { \ - vtime_account_irq_enter(current); \ + account_irq_enter_time(current); \ add_preempt_count(HARDIRQ_OFFSET); \ trace_hardirq_enter(); \ } while (0) @@ -169,7 +169,7 @@ extern void irq_enter(void); #define __irq_exit() \ do { \ trace_hardirq_exit(); \ - vtime_account_irq_exit(current); \ + account_irq_exit_time(current); \ sub_preempt_count(HARDIRQ_OFFSET); \ } while (0) diff --git a/include/linux/init_task.h b/include/linux/init_task.h index 6d087c5f57f7..cc898b871cef 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -10,6 +10,7 @@ #include #include #include +#include #include #ifdef CONFIG_SMP @@ -141,6 +142,15 @@ extern struct task_group root_task_group; # define INIT_PERF_EVENTS(tsk) #endif +#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN +# define INIT_VTIME(tsk) \ + .vtime_seqlock = __SEQLOCK_UNLOCKED(tsk.vtime_seqlock), \ + .vtime_snap = 0, \ + .vtime_snap_whence = VTIME_SYS, +#else +# define INIT_VTIME(tsk) +#endif + #define INIT_TASK_COMM "swapper" /* @@ -210,6 +220,7 @@ extern struct task_group root_task_group; INIT_TRACE_RECURSION \ INIT_TASK_RCU_PREEMPT(tsk) \ INIT_CPUSET_SEQ \ + INIT_VTIME(tsk) \ } diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 4fe2396401da..b7996a768eb2 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -741,7 +741,7 @@ static inline int kvm_deassign_device(struct kvm *kvm, } #endif /* CONFIG_IOMMU_API */ -static inline void guest_enter(void) +static inline void __guest_enter(void) { /* * This is running in ioctl context so we can avoid @@ -751,7 +751,7 @@ static inline void guest_enter(void) current->flags |= PF_VCPU; } -static inline void guest_exit(void) +static inline void __guest_exit(void) { /* * This is running in ioctl context so we can avoid @@ -761,6 +761,22 @@ static inline void guest_exit(void) current->flags &= ~PF_VCPU; } +#ifdef CONFIG_CONTEXT_TRACKING +extern void guest_enter(void); +extern void guest_exit(void); + +#else /* !CONFIG_CONTEXT_TRACKING */ +static inline void guest_enter(void) +{ + __guest_enter(); +} + +static inline void guest_exit(void) +{ + __guest_exit(); +} +#endif /* !CONFIG_CONTEXT_TRACKING */ + static inline void kvm_guest_enter(void) { unsigned long flags; diff --git a/include/linux/sched.h b/include/linux/sched.h index a9c608b6154e..a9fa5145e1a7 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1367,6 +1367,15 @@ struct task_struct { cputime_t gtime; #ifndef CONFIG_VIRT_CPU_ACCOUNTING struct cputime prev_cputime; +#endif +#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN + seqlock_t vtime_seqlock; + unsigned long long vtime_snap; + enum { + VTIME_SLEEPING = 0, + VTIME_USER, + VTIME_SYS, + } vtime_snap_whence; #endif unsigned long nvcsw, nivcsw; /* context switch counts */ struct timespec start_time; /* monotonic time */ @@ -1792,11 +1801,13 @@ static inline void put_task_struct(struct task_struct *t) __put_task_struct(t); } -static inline cputime_t task_gtime(struct task_struct *t) -{ - return t->gtime; -} - +#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN +extern void task_cputime(struct task_struct *t, + cputime_t *utime, cputime_t *stime); +extern void task_cputime_scaled(struct task_struct *t, + cputime_t *utimescaled, cputime_t *stimescaled); +extern cputime_t task_gtime(struct task_struct *t); +#else static inline void task_cputime(struct task_struct *t, cputime_t *utime, cputime_t *stime) { @@ -1815,6 +1826,12 @@ static inline void task_cputime_scaled(struct task_struct *t, if (stimescaled) *stimescaled = t->stimescaled; } + +static inline cputime_t task_gtime(struct task_struct *t) +{ + return t->gtime; +} +#endif extern void task_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st); extern void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st); diff --git a/include/linux/vtime.h b/include/linux/vtime.h index bb50c3ca0d79..71a5782d8c59 100644 --- a/include/linux/vtime.h +++ b/include/linux/vtime.h @@ -8,35 +8,44 @@ extern void vtime_task_switch(struct task_struct *prev); extern void vtime_account_system(struct task_struct *tsk); extern void vtime_account_idle(struct task_struct *tsk); extern void vtime_account_user(struct task_struct *tsk); -extern void vtime_account(struct task_struct *tsk); +extern void vtime_account_irq_enter(struct task_struct *tsk); -#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN -extern bool vtime_accounting_enabled(void); -#else +#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE static inline bool vtime_accounting_enabled(void) { return true; } #endif #else /* !CONFIG_VIRT_CPU_ACCOUNTING */ + static inline void vtime_task_switch(struct task_struct *prev) { } static inline void vtime_account_system(struct task_struct *tsk) { } static inline void vtime_account_user(struct task_struct *tsk) { } -static inline void vtime_account(struct task_struct *tsk) { } +static inline void vtime_account_irq_enter(struct task_struct *tsk) { } static inline bool vtime_accounting_enabled(void) { return false; } #endif #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN -static inline void arch_vtime_task_switch(struct task_struct *tsk) { } -static inline void vtime_user_enter(struct task_struct *tsk) -{ - vtime_account_system(tsk); -} +extern void arch_vtime_task_switch(struct task_struct *tsk); +extern void vtime_account_irq_exit(struct task_struct *tsk); +extern bool vtime_accounting_enabled(void); +extern void vtime_user_enter(struct task_struct *tsk); static inline void vtime_user_exit(struct task_struct *tsk) { vtime_account_user(tsk); } +extern void vtime_guest_enter(struct task_struct *tsk); +extern void vtime_guest_exit(struct task_struct *tsk); +extern void vtime_init_idle(struct task_struct *tsk); #else +static inline void vtime_account_irq_exit(struct task_struct *tsk) +{ + /* On hard|softirq exit we always account to hard|softirq cputime */ + vtime_account_system(tsk); +} static inline void vtime_user_enter(struct task_struct *tsk) { } static inline void vtime_user_exit(struct task_struct *tsk) { } +static inline void vtime_guest_enter(struct task_struct *tsk) { } +static inline void vtime_guest_exit(struct task_struct *tsk) { } +static inline void vtime_init_idle(struct task_struct *tsk) { } #endif #ifdef CONFIG_IRQ_TIME_ACCOUNTING @@ -45,25 +54,15 @@ extern void irqtime_account_irq(struct task_struct *tsk); static inline void irqtime_account_irq(struct task_struct *tsk) { } #endif -static inline void vtime_account_irq_enter(struct task_struct *tsk) +static inline void account_irq_enter_time(struct task_struct *tsk) { - /* - * Hardirq can interrupt idle task anytime. So we need vtime_account() - * that performs the idle check in CONFIG_VIRT_CPU_ACCOUNTING. - * Softirq can also interrupt idle task directly if it calls - * local_bh_enable(). Such case probably don't exist but we never know. - * Ksoftirqd is not concerned because idle time is flushed on context - * switch. Softirqs in the end of hardirqs are also not a problem because - * the idle time is flushed on hardirq time already. - */ - vtime_account(tsk); + vtime_account_irq_enter(tsk); irqtime_account_irq(tsk); } -static inline void vtime_account_irq_exit(struct task_struct *tsk) +static inline void account_irq_exit_time(struct task_struct *tsk) { - /* On hard|softirq exit we always account to hard|softirq cputime */ - vtime_account_system(tsk); + vtime_account_irq_exit(tsk); irqtime_account_irq(tsk); } -- cgit v1.2.3 From cef401de7be8c4e155c6746bfccf721a4fa5fab9 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 25 Jan 2013 20:34:37 +0000 Subject: net: fix possible wrong checksum generation Pravin Shelar mentioned that GSO could potentially generate wrong TX checksum if skb has fragments that are overwritten by the user between the checksum computation and transmit. He suggested to linearize skbs but this extra copy can be avoided for normal tcp skbs cooked by tcp_sendmsg(). This patch introduces a new SKB_GSO_SHARED_FRAG flag, set in skb_shinfo(skb)->gso_type if at least one frag can be modified by the user. Typical sources of such possible overwrites are {vm}splice(), sendfile(), and macvtap/tun/virtio_net drivers. Tested: $ netperf -H 7.7.8.84 MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 7.7.8.84 () port 0 AF_INET Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 10.00 3959.52 $ netperf -H 7.7.8.84 -t TCP_SENDFILE TCP SENDFILE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 7.7.8.84 () port 0 AF_INET Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 10.00 3216.80 Performance of the SENDFILE is impacted by the extra allocation and copy, and because we use order-0 pages, while the TCP_STREAM uses bigger pages. Reported-by: Pravin Shelar Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/skbuff.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 8b2256e880e0..0259b719bebf 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -307,6 +307,13 @@ enum { SKB_GSO_TCPV6 = 1 << 4, SKB_GSO_FCOE = 1 << 5, + + /* This indicates at least one fragment might be overwritten + * (as in vmsplice(), sendfile() ...) + * If we need to compute a TX checksum, we'll need to copy + * all frags to avoid possible bad checksum + */ + SKB_GSO_SHARED_FRAG = 1 << 6, }; #if BITS_PER_LONG > 32 @@ -2200,6 +2207,18 @@ static inline int skb_linearize(struct sk_buff *skb) return skb_is_nonlinear(skb) ? __skb_linearize(skb) : 0; } +/** + * skb_has_shared_frag - can any frag be overwritten + * @skb: buffer to test + * + * Return true if the skb has at least one frag that might be modified + * by an external entity (as in vmsplice()/sendfile()) + */ +static inline bool skb_has_shared_frag(const struct sk_buff *skb) +{ + return skb_shinfo(skb)->gso_type & SKB_GSO_SHARED_FRAG; +} + /** * skb_linearize_cow - make sure skb is linear and writable * @skb: buffer to process -- cgit v1.2.3 From 5afba62cc8a16716508605e02c1b02ee5f969184 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Wed, 26 Sep 2012 12:44:38 +0200 Subject: x86, msi: Use IRQ remapping specific setup_msi_irqs routine Use seperate routines to setup MSI IRQs for both irq_remapping_enabled cases. Signed-off-by: Joerg Roedel Acked-by: Sebastian Andrzej Siewior Reviewed-by: Konrad Rzeszutek Wilk --- include/linux/irq.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irq.h b/include/linux/irq.h index 1eab99111e94..bc4e06611958 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -509,8 +509,11 @@ static inline void irq_set_percpu_devid_flags(unsigned int irq) /* Handle dynamic irq creation and destruction */ extern unsigned int create_irq_nr(unsigned int irq_want, int node); +extern unsigned int __create_irqs(unsigned int from, unsigned int count, + int node); extern int create_irq(void); extern void destroy_irq(unsigned int irq); +extern void destroy_irqs(unsigned int irq, unsigned int count); /* * Dynamic irq helper functions. Obsolete. Use irq_alloc_desc* and -- cgit v1.2.3 From c7736edf1b1734455c186deec53a0aa7f8fa87ea Mon Sep 17 00:00:00 2001 From: Prashant Gaikwad Date: Fri, 11 Jan 2013 13:16:19 +0530 Subject: ARM: tegra: add function to read chipid Add function to read chip id from APB MISC registers. This function will also get called from clock driver to flush write operations on apb bus. Signed-off-by: Prashant Gaikwad Signed-off-by: Stephen Warren --- include/linux/tegra-soc.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 include/linux/tegra-soc.h (limited to 'include/linux') diff --git a/include/linux/tegra-soc.h b/include/linux/tegra-soc.h new file mode 100644 index 000000000000..95f611d78f3a --- /dev/null +++ b/include/linux/tegra-soc.h @@ -0,0 +1,22 @@ +/* + * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#ifndef __LINUX_TEGRA_SOC_H_ +#define __LINUX_TEGRA_SOC_H_ + +u32 tegra_read_chipid(void); + +#endif /* __LINUX_TEGRA_SOC_H_ */ -- cgit v1.2.3 From 89572c77cdffdf24f8fec50d3e38db6a18c04dbe Mon Sep 17 00:00:00 2001 From: Prashant Gaikwad Date: Fri, 11 Jan 2013 13:16:21 +0530 Subject: ARM: tegra: move tegra_cpu_car.h to linux/clk/tegra.h tegra_cpu_car_ops struct is going to be accessed from drivers/clk/tegra. Move the tegra_cpu_car_ops to include/linux/clk/tegra.h. Signed-off-by: Prashant Gaikwad Signed-off-by: Stephen Warren --- include/linux/clk/tegra.h | 124 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 124 insertions(+) create mode 100644 include/linux/clk/tegra.h (limited to 'include/linux') diff --git a/include/linux/clk/tegra.h b/include/linux/clk/tegra.h new file mode 100644 index 000000000000..0977f2a24757 --- /dev/null +++ b/include/linux/clk/tegra.h @@ -0,0 +1,124 @@ +/* + * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#ifndef __LINUX_CLK_TEGRA_H_ +#define __LINUX_CLK_TEGRA_H_ + +/* + * Tegra CPU clock and reset control ops + * + * wait_for_reset: + * keep waiting until the CPU in reset state + * put_in_reset: + * put the CPU in reset state + * out_of_reset: + * release the CPU from reset state + * enable_clock: + * CPU clock un-gate + * disable_clock: + * CPU clock gate + * rail_off_ready: + * CPU is ready for rail off + * suspend: + * save the clock settings when CPU go into low-power state + * resume: + * restore the clock settings when CPU exit low-power state + */ +struct tegra_cpu_car_ops { + void (*wait_for_reset)(u32 cpu); + void (*put_in_reset)(u32 cpu); + void (*out_of_reset)(u32 cpu); + void (*enable_clock)(u32 cpu); + void (*disable_clock)(u32 cpu); +#ifdef CONFIG_PM_SLEEP + bool (*rail_off_ready)(void); + void (*suspend)(void); + void (*resume)(void); +#endif +}; + +extern struct tegra_cpu_car_ops *tegra_cpu_car_ops; + +static inline void tegra_wait_cpu_in_reset(u32 cpu) +{ + if (WARN_ON(!tegra_cpu_car_ops->wait_for_reset)) + return; + + tegra_cpu_car_ops->wait_for_reset(cpu); +} + +static inline void tegra_put_cpu_in_reset(u32 cpu) +{ + if (WARN_ON(!tegra_cpu_car_ops->put_in_reset)) + return; + + tegra_cpu_car_ops->put_in_reset(cpu); +} + +static inline void tegra_cpu_out_of_reset(u32 cpu) +{ + if (WARN_ON(!tegra_cpu_car_ops->out_of_reset)) + return; + + tegra_cpu_car_ops->out_of_reset(cpu); +} + +static inline void tegra_enable_cpu_clock(u32 cpu) +{ + if (WARN_ON(!tegra_cpu_car_ops->enable_clock)) + return; + + tegra_cpu_car_ops->enable_clock(cpu); +} + +static inline void tegra_disable_cpu_clock(u32 cpu) +{ + if (WARN_ON(!tegra_cpu_car_ops->disable_clock)) + return; + + tegra_cpu_car_ops->disable_clock(cpu); +} + +#ifdef CONFIG_PM_SLEEP +static inline bool tegra_cpu_rail_off_ready(void) +{ + if (WARN_ON(!tegra_cpu_car_ops->rail_off_ready)) + return false; + + return tegra_cpu_car_ops->rail_off_ready(); +} + +static inline void tegra_cpu_clock_suspend(void) +{ + if (WARN_ON(!tegra_cpu_car_ops->suspend)) + return; + + tegra_cpu_car_ops->suspend(); +} + +static inline void tegra_cpu_clock_resume(void) +{ + if (WARN_ON(!tegra_cpu_car_ops->resume)) + return; + + tegra_cpu_car_ops->resume(); +} +#endif + +void tegra20_cpu_car_ops_init(void); +void tegra30_cpu_car_ops_init(void); + +#endif /* __LINUX_CLK_TEGRA_H_ */ -- cgit v1.2.3 From 61fd290d213e25d5a119b8ca25644001ed9f8f2d Mon Sep 17 00:00:00 2001 From: Prashant Gaikwad Date: Fri, 11 Jan 2013 13:16:26 +0530 Subject: ARM: tegra: migrate to new clock code Migrate Tegra clock support to drivers/clk/tegra, this involves moving: 1. definition of tegra_cpu_car_ops to clk.c 2. definition of reset functions to clk-peripheral.c 3. change parent of cpu clock. 4. Remove legacy clock initialization. 5. Initialize clocks using DT. 6. Remove all instance of mach/clk.h Signed-off-by: Prashant Gaikwad [swarren: use to_clk_periph_gate().] Signed-off-by: Stephen Warren --- include/linux/clk/tegra.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/clk/tegra.h b/include/linux/clk/tegra.h index 0977f2a24757..a7e5a3999099 100644 --- a/include/linux/clk/tegra.h +++ b/include/linux/clk/tegra.h @@ -17,6 +17,8 @@ #ifndef __LINUX_CLK_TEGRA_H_ #define __LINUX_CLK_TEGRA_H_ +#include + /* * Tegra CPU clock and reset control ops * @@ -120,5 +122,8 @@ static inline void tegra_cpu_clock_resume(void) void tegra20_cpu_car_ops_init(void); void tegra30_cpu_car_ops_init(void); +void tegra_periph_reset_deassert(struct clk *c); +void tegra_periph_reset_assert(struct clk *c); +void tegra_clocks_init(void); #endif /* __LINUX_CLK_TEGRA_H_ */ -- cgit v1.2.3 From 52dec4c9eacc339dbf1b2ab549248df1cc6eb030 Mon Sep 17 00:00:00 2001 From: Prashant Gaikwad Date: Fri, 11 Jan 2013 13:16:27 +0530 Subject: ARM: tegra: remove legacy clock code Remove all legacy clock code from mach-tegra. Signed-off-by: Prashant Gaikwad Signed-off-by: Stephen Warren --- include/linux/clk/tegra.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/clk/tegra.h b/include/linux/clk/tegra.h index a7e5a3999099..404d6f940872 100644 --- a/include/linux/clk/tegra.h +++ b/include/linux/clk/tegra.h @@ -120,8 +120,6 @@ static inline void tegra_cpu_clock_resume(void) } #endif -void tegra20_cpu_car_ops_init(void); -void tegra30_cpu_car_ops_init(void); void tegra_periph_reset_deassert(struct clk *c); void tegra_periph_reset_assert(struct clk *c); void tegra_clocks_init(void); -- cgit v1.2.3 From 5e18150a7b4139e15e1ed7d7c938dd91f7f12354 Mon Sep 17 00:00:00 2001 From: Venu Byravarasu Date: Tue, 15 Jan 2013 15:49:30 +0530 Subject: usb: phy: remove unused APIs from Tegra PHY. As tegra_usb_phy_clk_disable/enable() are not being used, removing them. Signed-off-by: Venu Byravarasu Signed-off-by: Stephen Warren --- include/linux/usb/tegra_usb_phy.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/tegra_usb_phy.h b/include/linux/usb/tegra_usb_phy.h index 176b1ca06ae4..34e6355a15e3 100644 --- a/include/linux/usb/tegra_usb_phy.h +++ b/include/linux/usb/tegra_usb_phy.h @@ -64,10 +64,6 @@ struct tegra_usb_phy { struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance, void __iomem *regs, void *config, enum tegra_usb_phy_mode phy_mode); -void tegra_usb_phy_clk_disable(struct tegra_usb_phy *phy); - -void tegra_usb_phy_clk_enable(struct tegra_usb_phy *phy); - void tegra_usb_phy_preresume(struct tegra_usb_phy *phy); void tegra_usb_phy_postresume(struct tegra_usb_phy *phy); -- cgit v1.2.3 From 3a55c6a8b96f055783a1b9d5497f66b56a9ea0d7 Mon Sep 17 00:00:00 2001 From: Venu Byravarasu Date: Wed, 16 Jan 2013 03:30:20 +0000 Subject: USB: PHY: tegra: get rid of instance number to differentiate legacy controller Tegra20 USB has 3 PHY instances. Instance 0 is based on legacy PHY interface and other two are standard interfaces. As instance number was used to differentiate legacy from standard interfaces, used DT param to get this info and processed accordingly. Signed-off-by: Venu Byravarasu Acked-by: Felipe Balbi Signed-off-by: Stephen Warren --- include/linux/usb/tegra_usb_phy.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/usb/tegra_usb_phy.h b/include/linux/usb/tegra_usb_phy.h index 34e6355a15e3..f03e157abaa8 100644 --- a/include/linux/usb/tegra_usb_phy.h +++ b/include/linux/usb/tegra_usb_phy.h @@ -59,6 +59,7 @@ struct tegra_usb_phy { struct usb_phy *ulpi; struct usb_phy u_phy; struct device *dev; + bool is_legacy_phy; }; struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance, -- cgit v1.2.3 From 3f9db1a19a8a17f6000973194c6a1d63c5cebf21 Mon Sep 17 00:00:00 2001 From: Venu Byravarasu Date: Wed, 16 Jan 2013 03:30:21 +0000 Subject: USB: PHY: tegra: Get rid of instance number to differentiate PHY type Tegra20 USB has 3 PHY instances: Instance 1 and 3 are UTMI. Instance 2 is ULPI. As instance number was used to differentiate ULPI from UTMI, used DT param to get this info and processed accordingly. Signed-off-by: Venu Byravarasu Acked-by: Felipe Balbi [swarren: moved assignment of phy->is_ulpi_phy into this patch out of next patch.] Signed-off-by: Stephen Warren --- include/linux/usb/tegra_usb_phy.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/usb/tegra_usb_phy.h b/include/linux/usb/tegra_usb_phy.h index f03e157abaa8..a6a89d4866f4 100644 --- a/include/linux/usb/tegra_usb_phy.h +++ b/include/linux/usb/tegra_usb_phy.h @@ -60,6 +60,7 @@ struct tegra_usb_phy { struct usb_phy u_phy; struct device *dev; bool is_legacy_phy; + bool is_ulpi_phy; }; struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance, -- cgit v1.2.3 From bbdabdb62d86090511410728644a19291bf300cf Mon Sep 17 00:00:00 2001 From: Venu Byravarasu Date: Thu, 17 Jan 2013 20:15:37 +0000 Subject: usb: add APIs to access host registers from Tegra PHY As Tegra PHY driver needs to access one of the host registers, added few APIs. Signed-off-by: Venu Byravarasu Acked-by: Alan Stern [swarren: moved assignment of phy->is_ulpi_phy to previous patch.] Signed-off-by: Stephen Warren --- include/linux/usb/tegra_usb_phy.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/tegra_usb_phy.h b/include/linux/usb/tegra_usb_phy.h index a6a89d4866f4..9259d4659582 100644 --- a/include/linux/usb/tegra_usb_phy.h +++ b/include/linux/usb/tegra_usb_phy.h @@ -75,4 +75,8 @@ void tegra_ehci_phy_restore_start(struct tegra_usb_phy *phy, void tegra_ehci_phy_restore_end(struct tegra_usb_phy *phy); +void tegra_ehci_set_pts(struct usb_phy *x, u8 pts_val); + +void tegra_ehci_set_phcd(struct usb_phy *x, bool enable); + #endif /* __TEGRA_USB_PHY_H */ -- cgit v1.2.3 From ab137d04db5a4b32250ce5ef1b288ce6cf06adf6 Mon Sep 17 00:00:00 2001 From: Venu Byravarasu Date: Thu, 24 Jan 2013 15:57:03 +0530 Subject: usb: host: tegra: make use of PHY pointer of HCD As pointer to PHY structure can be stored in struct usb_hcd making use of it, to call Tegra PHY APIs. Call to usb_phy_shutdown() is moved up in tegra_ehci_remove(), so that to avoid dereferencing of hcd after its freed up. Signed-off-by: Venu Byravarasu Acked-by: Alan Stern Acked-by: Felipe Balbi Acked-by: Greg Kroah-Hartman Signed-off-by: Stephen Warren --- include/linux/usb/tegra_usb_phy.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/tegra_usb_phy.h b/include/linux/usb/tegra_usb_phy.h index 9259d4659582..9ebebe906925 100644 --- a/include/linux/usb/tegra_usb_phy.h +++ b/include/linux/usb/tegra_usb_phy.h @@ -66,14 +66,14 @@ struct tegra_usb_phy { struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance, void __iomem *regs, void *config, enum tegra_usb_phy_mode phy_mode); -void tegra_usb_phy_preresume(struct tegra_usb_phy *phy); +void tegra_usb_phy_preresume(struct usb_phy *phy); -void tegra_usb_phy_postresume(struct tegra_usb_phy *phy); +void tegra_usb_phy_postresume(struct usb_phy *phy); -void tegra_ehci_phy_restore_start(struct tegra_usb_phy *phy, +void tegra_ehci_phy_restore_start(struct usb_phy *phy, enum tegra_usb_phy_port_speed port_speed); -void tegra_ehci_phy_restore_end(struct tegra_usb_phy *phy); +void tegra_ehci_phy_restore_end(struct usb_phy *phy); void tegra_ehci_set_pts(struct usb_phy *x, u8 pts_val); -- cgit v1.2.3 From 2bf3440d7b8755f2627232e6a4c37efbbe053685 Mon Sep 17 00:00:00 2001 From: Oliver Hartkopp Date: Mon, 28 Jan 2013 08:33:33 +0000 Subject: can: rework skb reserved data handling Added accessor and skb_reserve helpers for struct can_skb_priv. Removed pointless skb_headroom() check. Signed-off-by: Oliver Hartkopp CC: Marc Kleine-Budde Signed-off-by: David S. Miller --- include/linux/can/skb.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/can/skb.h b/include/linux/can/skb.h index 4b0f24d3a878..2f0543f7510c 100644 --- a/include/linux/can/skb.h +++ b/include/linux/can/skb.h @@ -32,4 +32,14 @@ struct can_skb_priv { struct can_frame cf[0]; }; +static inline struct can_skb_priv *can_skb_prv(struct sk_buff *skb) +{ + return (struct can_skb_priv *)(skb->head); +} + +static inline void can_skb_reserve(struct sk_buff *skb) +{ + skb_reserve(skb, sizeof(struct can_skb_priv)); +} + #endif /* CAN_SKB_H */ -- cgit v1.2.3 From 5fbee843c32e5de2d8af68ba0bdd113bb0af9d86 Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Tue, 22 Jan 2013 21:29:39 +0000 Subject: netpoll: add RCU annotation to npinfo field dev->npinfo is protected by RCU. This fixes the following sparse warnings: net/core/netpoll.c:177:48: error: incompatible types in comparison expression (different address spaces) net/core/netpoll.c:200:35: error: incompatible types in comparison expression (different address spaces) net/core/netpoll.c:221:35: error: incompatible types in comparison expression (different address spaces) net/core/netpoll.c:327:18: error: incompatible types in comparison expression (different address spaces) Cc: Eric Dumazet Cc: David S. Miller Signed-off-by: Cong Wang Signed-off-by: David S. Miller --- include/linux/netdevice.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 549f5ad2055d..85b0949d9946 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1272,7 +1272,7 @@ struct net_device { void (*destructor)(struct net_device *dev); #ifdef CONFIG_NETPOLL - struct netpoll_info *npinfo; + struct netpoll_info __rcu *npinfo; #endif #ifdef CONFIG_NET_NS -- cgit v1.2.3 From 7ab59dc15e2f42a4321ed016bcd6044a4d8de6d1 Mon Sep 17 00:00:00 2001 From: "David J. Choi" Date: Wed, 23 Jan 2013 14:05:15 +0000 Subject: drivers/net/phy/micrel_phy: Add support for new PHYs Summary of changes: .Newly added phys -KSZ8081/KSZ8091, which has some phy ids. -KSZ8061 -KSZ9031, which is Gigabit phy. -KSZ886X, which has a switch function. -KSZ8031, which has a same phy ids with KSZ8021. Signed-off-by: David J. Choi Signed-off-by: David S. Miller --- include/linux/micrel_phy.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/micrel_phy.h b/include/linux/micrel_phy.h index adfe8c058f29..9dbb41a4e250 100644 --- a/include/linux/micrel_phy.h +++ b/include/linux/micrel_phy.h @@ -21,8 +21,15 @@ #define PHY_ID_KSZ8021 0x00221555 #define PHY_ID_KSZ8041 0x00221510 #define PHY_ID_KSZ8051 0x00221550 -/* both for ks8001 Rev. A/B, and for ks8721 Rev 3. */ +/* same id: ks8001 Rev. A/B, and ks8721 Rev 3. */ #define PHY_ID_KSZ8001 0x0022161A +/* same id: KS8081, KS8091 */ +#define PHY_ID_KSZ8081 0x00221560 +#define PHY_ID_KSZ8061 0x00221570 +#define PHY_ID_KSZ9031 0x00221620 + +#define PHY_ID_KSZ886X 0x00221430 +#define PHY_ID_KSZ8863 0x00221435 /* struct phy_device dev_flags definitions */ #define MICREL_PHY_50MHZ_CLK 0x00000001 -- cgit v1.2.3 From d2a5884a64161b524cc6749ee11b95d252e497f3 Mon Sep 17 00:00:00 2001 From: Andrey Smirnov Date: Sun, 27 Jan 2013 10:49:05 -0800 Subject: regmap: Add "no-bus" option for regmap API This commit adds provision for "no-bus" usage of the regmap API. In this configuration user can provide API with two callbacks 'reg_read' and 'reg_write' which are to be called when reads and writes to one of device's registers is performed. This is useful for devices that expose registers but whose register access sequence does not fit the 'bus' abstraction. Signed-off-by: Andrey Smirnov Signed-off-by: Mark Brown --- include/linux/regmap.h | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index b7e95bf942c9..28dde941c783 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -127,7 +127,18 @@ typedef void (*regmap_unlock)(void *); * @lock_arg: this field is passed as the only argument of lock/unlock * functions (ignored in case regular lock/unlock functions * are not overridden). - * + * @reg_read: Optional callback that if filled will be used to perform + * all the reads from the registers. Should only be provided for + * devices whos read operation cannot be represented as a simple read + * operation on a bus such as SPI, I2C, etc. Most of the devices do + * not need this. + * @reg_write: Same as above for writing. + * @fast_io: Register IO is fast. Use a spinlock instead of a mutex + * to perform locking. This field is ignored if custom lock/unlock + * functions are used (see fields lock/unlock of struct regmap_config). + * This field is a duplicate of a similar file in + * 'struct regmap_bus' and serves exact same purpose. + * Use it only for "no-bus" cases. * @max_register: Optional, specifies the maximum valid register index. * @wr_table: Optional, points to a struct regmap_access_table specifying * valid ranges for write access. @@ -177,6 +188,11 @@ struct regmap_config { regmap_unlock unlock; void *lock_arg; + int (*reg_read)(void *context, unsigned int reg, unsigned int *val); + int (*reg_write)(void *context, unsigned int reg, unsigned int val); + + bool fast_io; + unsigned int max_register; const struct regmap_access_table *wr_table; const struct regmap_access_table *rd_table; -- cgit v1.2.3 From 0d509f2b112b21411712f0bf789b372987967e49 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sun, 27 Jan 2013 22:07:38 +0800 Subject: regmap: Add asynchronous I/O support Some use cases like firmware download can transfer a lot of data in quick succession. With high speed buses these use cases can benefit from having multiple transfers scheduled at once since this allows the bus to minimise the delay between transfers. Support this by adding regmap_raw_write_async(), allowing raw transfers to be scheduled, and regmap_async_complete() to wait for them to finish. Signed-off-by: Mark Brown --- include/linux/regmap.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index b7e95bf942c9..f9b7fbe35ab1 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -235,14 +235,21 @@ struct regmap_range_cfg { unsigned int window_len; }; +struct regmap_async; + typedef int (*regmap_hw_write)(void *context, const void *data, size_t count); typedef int (*regmap_hw_gather_write)(void *context, const void *reg, size_t reg_len, const void *val, size_t val_len); +typedef int (*regmap_hw_async_write)(void *context, + const void *reg, size_t reg_len, + const void *val, size_t val_len, + struct regmap_async *async); typedef int (*regmap_hw_read)(void *context, const void *reg_buf, size_t reg_size, void *val_buf, size_t val_size); +typedef struct regmap_async *(*regmap_hw_async_alloc)(void); typedef void (*regmap_hw_free_context)(void *context); /** @@ -255,8 +262,11 @@ typedef void (*regmap_hw_free_context)(void *context); * @write: Write operation. * @gather_write: Write operation with split register/value, return -ENOTSUPP * if not implemented on a given device. + * @async_write: Write operation which completes asynchronously, optional and + * must serialise with respect to non-async I/O. * @read: Read operation. Data is returned in the buffer used to transmit * data. + * @async_alloc: Allocate a regmap_async() structure. * @read_flag_mask: Mask to be set in the top byte of the register when doing * a read. * @reg_format_endian_default: Default endianness for formatted register @@ -265,13 +275,16 @@ typedef void (*regmap_hw_free_context)(void *context); * @val_format_endian_default: Default endianness for formatted register * values. Used when the regmap_config specifies DEFAULT. If this is * DEFAULT, BIG is assumed. + * @async_size: Size of struct used for async work. */ struct regmap_bus { bool fast_io; regmap_hw_write write; regmap_hw_gather_write gather_write; + regmap_hw_async_write async_write; regmap_hw_read read; regmap_hw_free_context free_context; + regmap_hw_async_alloc async_alloc; u8 read_flag_mask; enum regmap_endian reg_format_endian_default; enum regmap_endian val_format_endian_default; @@ -310,6 +323,8 @@ int regmap_raw_write(struct regmap *map, unsigned int reg, const void *val, size_t val_len); int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val, size_t val_count); +int regmap_raw_write_async(struct regmap *map, unsigned int reg, + const void *val, size_t val_len); int regmap_read(struct regmap *map, unsigned int reg, unsigned int *val); int regmap_raw_read(struct regmap *map, unsigned int reg, void *val, size_t val_len); @@ -321,6 +336,7 @@ int regmap_update_bits_check(struct regmap *map, unsigned int reg, unsigned int mask, unsigned int val, bool *change); int regmap_get_val_bytes(struct regmap *map); +int regmap_async_complete(struct regmap *map); int regcache_sync(struct regmap *map); int regcache_sync_region(struct regmap *map, unsigned int min, @@ -422,6 +438,13 @@ static inline int regmap_raw_write(struct regmap *map, unsigned int reg, return -EINVAL; } +static inline int regmap_raw_write_async(struct regmap *map, unsigned int reg, + const void *val, size_t val_len) +{ + WARN_ONCE(1, "regmap API is disabled"); + return -EINVAL; +} + static inline int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val, size_t val_count) { @@ -500,6 +523,11 @@ static inline void regcache_mark_dirty(struct regmap *map) WARN_ONCE(1, "regmap API is disabled"); } +static inline void regmap_async_complete(struct regmap *map) +{ + WARN_ONCE(1, "regmap API is disabled"); +} + static inline int regmap_register_patch(struct regmap *map, const struct reg_default *regs, int num_regs) -- cgit v1.2.3 From c7c9c56ca26f7b9458711b2d78b60b60e0d38ba7 Mon Sep 17 00:00:00 2001 From: Yang Zhang Date: Fri, 25 Jan 2013 10:18:51 +0800 Subject: x86, apicv: add virtual interrupt delivery support Virtual interrupt delivery avoids KVM to inject vAPIC interrupts manually, which is fully taken care of by the hardware. This needs some special awareness into existing interrupr injection path: - for pending interrupt, instead of direct injection, we may need update architecture specific indicators before resuming to guest. - A pending interrupt, which is masked by ISR, should be also considered in above update action, since hardware will decide when to inject it at right time. Current has_interrupt and get_interrupt only returns a valid vector from injection p.o.v. Reviewed-by: Marcelo Tosatti Signed-off-by: Kevin Tian Signed-off-by: Yang Zhang Signed-off-by: Gleb Natapov --- include/linux/kvm_host.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 4dd7d7531e69..0350e0d5e031 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -123,6 +123,7 @@ static inline bool is_error_page(struct page *page) #define KVM_REQ_MASTERCLOCK_UPDATE 19 #define KVM_REQ_MCLOCK_INPROGRESS 20 #define KVM_REQ_EPR_EXIT 21 +#define KVM_REQ_EOIBITMAP 22 #define KVM_USERSPACE_IRQ_SOURCE_ID 0 #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 @@ -538,6 +539,7 @@ void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); void kvm_flush_remote_tlbs(struct kvm *kvm); void kvm_reload_remote_mmus(struct kvm *kvm); void kvm_make_mclock_inprogress_request(struct kvm *kvm); +void kvm_make_update_eoibitmap_request(struct kvm *kvm); long kvm_arch_dev_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg); @@ -691,6 +693,7 @@ int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level); int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level); int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, int irq_source_id, int level); +bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin); void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); void kvm_register_irq_ack_notifier(struct kvm *kvm, struct kvm_irq_ack_notifier *kian); -- cgit v1.2.3 From 0d1c28a449c6c23a126e3a08ee30914609aac227 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Mon, 28 Jan 2013 16:23:10 +0200 Subject: gpiolib-acpi: Add ACPI5 event model support to gpio. Add ability to handle ACPI events signalled by GPIO interrupts. ACPI5 platforms can use GPIO signaled ACPI events. These GPIO interrupts are handled by ACPI event methods which need to be called from the GPIO controller's interrupt handler. acpi_gpio_request_interrupt() finds out which gpio pins have acpi event methods and assigns interrupt handlers that calls the acpi event methods for those pins. Partially based on work by Rui Zhang Signed-off-by: Mathias Nyman Signed-off-by: Linus Walleij --- include/linux/acpi_gpio.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/acpi_gpio.h b/include/linux/acpi_gpio.h index 91615a389b65..b76ebd08ff8e 100644 --- a/include/linux/acpi_gpio.h +++ b/include/linux/acpi_gpio.h @@ -2,10 +2,12 @@ #define _LINUX_ACPI_GPIO_H_ #include +#include #ifdef CONFIG_GPIO_ACPI int acpi_get_gpio(char *path, int pin); +void acpi_gpiochip_request_interrupts(struct gpio_chip *chip); #else /* CONFIG_GPIO_ACPI */ @@ -14,6 +16,8 @@ static inline int acpi_get_gpio(char *path, int pin) return -ENODEV; } +static inline void acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { } + #endif /* CONFIG_GPIO_ACPI */ #endif /* _LINUX_ACPI_GPIO_H_ */ -- cgit v1.2.3 From 222e8500f5e75d578ce1cc38c0349f89646319c4 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 7 Jan 2013 09:06:16 +0100 Subject: mfd: prcmu: delete pin control helpers These static inlines are duplicating the task now done by the Nomadik pinctrl drivers, so delete them from the prcmu static inlines, also delete the register definitions as these should only be known by the pinctrl driver. Cc: Loic Pallardy Cc: Patrice Chotard Cc: Michel Jaouen Acked-by: Samuel Ortiz Signed-off-by: Linus Walleij --- include/linux/mfd/db8500-prcmu.h | 6 --- include/linux/mfd/dbx500-prcmu.h | 79 ---------------------------------------- 2 files changed, 85 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/db8500-prcmu.h b/include/linux/mfd/db8500-prcmu.h index 6ee4247df11e..a65deddede2f 100644 --- a/include/linux/mfd/db8500-prcmu.h +++ b/include/linux/mfd/db8500-prcmu.h @@ -16,12 +16,6 @@ /* * Registers */ -#define DB8500_PRCM_GPIOCR 0x138 -#define DB8500_PRCM_GPIOCR_DBG_UARTMOD_CMD0 BIT(0) -#define DB8500_PRCM_GPIOCR_DBG_STM_APE_CMD BIT(9) -#define DB8500_PRCM_GPIOCR_DBG_STM_MOD_CMD1 BIT(11) -#define DB8500_PRCM_GPIOCR_SPI2_SELECT BIT(23) - #define DB8500_PRCM_LINE_VALUE 0x170 #define DB8500_PRCM_LINE_VALUE_HSI_CAWAKE0 BIT(3) diff --git a/include/linux/mfd/dbx500-prcmu.h b/include/linux/mfd/dbx500-prcmu.h index c202d6c4d879..ac601470962c 100644 --- a/include/linux/mfd/dbx500-prcmu.h +++ b/include/linux/mfd/dbx500-prcmu.h @@ -626,85 +626,6 @@ static inline void prcmu_clear(unsigned int reg, u32 bits) prcmu_write_masked(reg, bits, 0); } -#if defined(CONFIG_UX500_SOC_DB8500) - -/** - * prcmu_enable_spi2 - Enables pin muxing for SPI2 on OtherAlternateC1. - */ -static inline void prcmu_enable_spi2(void) -{ - if (cpu_is_u8500()) - prcmu_set(DB8500_PRCM_GPIOCR, DB8500_PRCM_GPIOCR_SPI2_SELECT); -} - -/** - * prcmu_disable_spi2 - Disables pin muxing for SPI2 on OtherAlternateC1. - */ -static inline void prcmu_disable_spi2(void) -{ - if (cpu_is_u8500()) - prcmu_clear(DB8500_PRCM_GPIOCR, DB8500_PRCM_GPIOCR_SPI2_SELECT); -} - -/** - * prcmu_enable_stm_mod_uart - Enables pin muxing for STMMOD - * and UARTMOD on OtherAlternateC3. - */ -static inline void prcmu_enable_stm_mod_uart(void) -{ - if (cpu_is_u8500()) { - prcmu_set(DB8500_PRCM_GPIOCR, - (DB8500_PRCM_GPIOCR_DBG_STM_MOD_CMD1 | - DB8500_PRCM_GPIOCR_DBG_UARTMOD_CMD0)); - } -} - -/** - * prcmu_disable_stm_mod_uart - Disables pin muxing for STMMOD - * and UARTMOD on OtherAlternateC3. - */ -static inline void prcmu_disable_stm_mod_uart(void) -{ - if (cpu_is_u8500()) { - prcmu_clear(DB8500_PRCM_GPIOCR, - (DB8500_PRCM_GPIOCR_DBG_STM_MOD_CMD1 | - DB8500_PRCM_GPIOCR_DBG_UARTMOD_CMD0)); - } -} - -/** - * prcmu_enable_stm_ape - Enables pin muxing for STM APE on OtherAlternateC1. - */ -static inline void prcmu_enable_stm_ape(void) -{ - if (cpu_is_u8500()) { - prcmu_set(DB8500_PRCM_GPIOCR, - DB8500_PRCM_GPIOCR_DBG_STM_APE_CMD); - } -} - -/** - * prcmu_disable_stm_ape - Disables pin muxing for STM APE on OtherAlternateC1. - */ -static inline void prcmu_disable_stm_ape(void) -{ - if (cpu_is_u8500()) { - prcmu_clear(DB8500_PRCM_GPIOCR, - DB8500_PRCM_GPIOCR_DBG_STM_APE_CMD); - } -} - -#else - -static inline void prcmu_enable_spi2(void) {} -static inline void prcmu_disable_spi2(void) {} -static inline void prcmu_enable_stm_mod_uart(void) {} -static inline void prcmu_disable_stm_mod_uart(void) {} -static inline void prcmu_enable_stm_ape(void) {} -static inline void prcmu_disable_stm_ape(void) {} - -#endif - /* PRCMU QoS APE OPP class */ #define PRCMU_QOS_APE_OPP 1 #define PRCMU_QOS_DDR_OPP 2 -- cgit v1.2.3 From 7a4f26097d389c16c9956bc03b81532698d97d64 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 19 Sep 2012 19:31:19 +0200 Subject: ARM: ux500: de-globalize This removes the file from the global kernel include scope, making it a pure mach-ux500 detail. All ASIC specifics needed by drivers shall henceforth be passed from either platform data or the device tree. Cc: Rafael J. Wysocki Acked-by: Samuel Ortiz Signed-off-by: Linus Walleij --- include/linux/mfd/dbx500-prcmu.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/dbx500-prcmu.h b/include/linux/mfd/dbx500-prcmu.h index ac601470962c..155280642583 100644 --- a/include/linux/mfd/dbx500-prcmu.h +++ b/include/linux/mfd/dbx500-prcmu.h @@ -218,8 +218,6 @@ enum ddr_pwrst { #if defined(CONFIG_UX500_SOC_DB8500) -#include - static inline void __init prcmu_early_init(void) { return db8500_prcmu_early_init(); -- cgit v1.2.3 From 5c766d642bcaffd0c2a5b354db2068515b3846cf Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Thu, 24 Jan 2013 09:41:41 +0000 Subject: ipv4: introduce address lifetime MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit There are some usecase when lifetime of ipv4 addresses might be helpful. For example: 1) initramfs networkmanager uses a DHCP daemon to learn network configuration parameters 2) initramfs networkmanager addresses, routes and DNS configuration 3) initramfs networkmanager is requested to stop 4) initramfs networkmanager stops all daemons including dhclient 5) there are addresses and routes configured but no daemon running. If the system doesn't start networkmanager for some reason, addresses and routes will be used forever, which violates RFC 2131. This patch is essentially a backport of ivp6 address lifetime mechanism for ipv4 addresses. Current "ip" tool supports this without any patch (since it does not distinguish between ipv4 and ipv6 addresses in this perspective. Also, this should be back-compatible with all current netlink users. Reported-by: Pavel Šimerda Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- include/linux/inetdevice.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h index a9d828976a77..ea1e3b863890 100644 --- a/include/linux/inetdevice.h +++ b/include/linux/inetdevice.h @@ -166,6 +166,12 @@ struct in_ifaddr { unsigned char ifa_flags; unsigned char ifa_prefixlen; char ifa_label[IFNAMSIZ]; + + /* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */ + __u32 ifa_valid_lft; + __u32 ifa_preferred_lft; + unsigned long ifa_cstamp; /* created timestamp */ + unsigned long ifa_tstamp; /* updated timestamp */ }; extern int register_inetaddr_notifier(struct notifier_block *nb); -- cgit v1.2.3 From 6f16eebe1ff82176339a0439c98ebec9768b0ee2 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Fri, 25 Jan 2013 17:08:12 -0800 Subject: timekeeping: Switch HAS_PERSISTENT_CLOCK to ALWAYS_USE_PERSISTENT_CLOCK Jason pointed out the HAS_PERSISTENT_CLOCK name isn't quite accurate for the config, as some systems may have the persistent_clock in some cases, but not always. So change the config name to the more clear ALWAYS_USE_PERSISTENT_CLOCK. Signed-off-by: John Stultz --- include/linux/time.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/time.h b/include/linux/time.h index 369b6e3b87d8..476e1d7b2c37 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -117,7 +117,7 @@ static inline bool timespec_valid_strict(const struct timespec *ts) extern bool persistent_clock_exist; -#ifdef CONFIG_HAS_PERSISTENT_CLOCK +#ifdef ALWAYS_USE_PERSISTENT_CLOCK #define has_persistent_clock() true #else static inline bool has_persistent_clock(void) -- cgit v1.2.3 From 595ad9af8584908ea5fb698b836169d05b99f186 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Thu, 24 Jan 2013 12:20:09 -0800 Subject: memblock: Add memblock_mem_size() Use it to get mem size under the limit_pfn. to replace local version in x86 reserved_initrd. -v2: remove not needed cast that is pointed out by HPA. Signed-off-by: Yinghai Lu Link: http://lkml.kernel.org/r/1359058816-7615-29-git-send-email-yinghai@kernel.org Signed-off-by: H. Peter Anvin --- include/linux/memblock.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/memblock.h b/include/linux/memblock.h index d452ee191066..f388203db7e8 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -155,6 +155,7 @@ phys_addr_t memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t __memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr); phys_addr_t memblock_phys_mem_size(void); +phys_addr_t memblock_mem_size(unsigned long limit_pfn); phys_addr_t memblock_start_of_DRAM(void); phys_addr_t memblock_end_of_DRAM(void); void memblock_enforce_memory_limit(phys_addr_t memory_limit); -- cgit v1.2.3 From 0212f9159694be61c6bc52e925fa76643e0c1abf Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Thu, 24 Jan 2013 12:20:11 -0800 Subject: x86: Add Crash kernel low reservation During kdump kernel's booting stage, it need to find low ram for swiotlb buffer when system does not support intel iommu/dmar remapping. kexed-tools is appending memmap=exactmap and range from /proc/iomem with "Crash kernel", and that range is above 4G for 64bit after boot protocol 2.12. We need to add another range in /proc/iomem like "Crash kernel low", so kexec-tools could find that info and append to kdump kernel command line. Try to reserve some under 4G if the normal "Crash kernel" is above 4G. User could specify the size with crashkernel_low=XX[KMG]. -v2: fix warning that is found by Fengguang's test robot. -v3: move out get_mem_size change to another patch, to solve compiling warning that is found by Borislav Petkov -v4: user must specify crashkernel_low if system does not support intel or amd iommu. Signed-off-by: Yinghai Lu Link: http://lkml.kernel.org/r/1359058816-7615-31-git-send-email-yinghai@kernel.org Cc: Eric Biederman Cc: Rob Landley Signed-off-by: H. Peter Anvin --- include/linux/kexec.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/kexec.h b/include/linux/kexec.h index d0b8458a703a..d2e6927bbaae 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -191,6 +191,7 @@ extern struct kimage *kexec_crash_image; /* Location of a reserved region to hold the crash kernel. */ extern struct resource crashk_res; +extern struct resource crashk_low_res; typedef u32 note_buf_t[KEXEC_NOTE_BYTES/4]; extern note_buf_t __percpu *crash_notes; extern u32 vmcoreinfo_note[VMCOREINFO_NOTE_SIZE/4]; @@ -199,6 +200,8 @@ extern size_t vmcoreinfo_max_size; int __init parse_crashkernel(char *cmdline, unsigned long long system_ram, unsigned long long *crash_size, unsigned long long *crash_base); +int parse_crashkernel_low(char *cmdline, unsigned long long system_ram, + unsigned long long *crash_size, unsigned long long *crash_base); int crash_shrink_memory(unsigned long new_size); size_t crash_get_memory_size(void); void crash_free_reserved_phys_range(unsigned long begin, unsigned long end); -- cgit v1.2.3 From 38fa4175e60d98fb1c9815fb14f8057576dade73 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Thu, 24 Jan 2013 12:20:15 -0800 Subject: mm: Add alloc_bootmem_low_pages_nopanic() We don't need to panic in some case, like for swiotlb preallocating. Signed-off-by: Yinghai Lu Link: http://lkml.kernel.org/r/1359058816-7615-35-git-send-email-yinghai@kernel.org Signed-off-by: H. Peter Anvin --- include/linux/bootmem.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h index 3f778c27f825..3cd16ba82f15 100644 --- a/include/linux/bootmem.h +++ b/include/linux/bootmem.h @@ -99,6 +99,9 @@ void *___alloc_bootmem_node_nopanic(pg_data_t *pgdat, extern void *__alloc_bootmem_low(unsigned long size, unsigned long align, unsigned long goal); +void *__alloc_bootmem_low_nopanic(unsigned long size, + unsigned long align, + unsigned long goal); extern void *__alloc_bootmem_low_node(pg_data_t *pgdat, unsigned long size, unsigned long align, @@ -132,6 +135,8 @@ extern void *__alloc_bootmem_low_node(pg_data_t *pgdat, #define alloc_bootmem_low(x) \ __alloc_bootmem_low(x, SMP_CACHE_BYTES, 0) +#define alloc_bootmem_low_pages_nopanic(x) \ + __alloc_bootmem_low_nopanic(x, PAGE_SIZE, 0) #define alloc_bootmem_low_pages(x) \ __alloc_bootmem_low(x, PAGE_SIZE, 0) #define alloc_bootmem_low_pages_node(pgdat, x) \ -- cgit v1.2.3 From ac2cbab21f318e19bc176a7f38a120cec835220f Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Thu, 24 Jan 2013 12:20:16 -0800 Subject: x86: Don't panic if can not alloc buffer for swiotlb Normal boot path on system with iommu support: swiotlb buffer will be allocated early at first and then try to initialize iommu, if iommu for intel or AMD could setup properly, swiotlb buffer will be freed. The early allocating is with bootmem, and could panic when we try to use kdump with buffer above 4G only, or with memmap to limit mem under 4G. for example: memmap=4095M$1M to remove memory under 4G. According to Eric, add _nopanic version and no_iotlb_memory to fail map single later if swiotlb is still needed. -v2: don't pass nopanic, and use -ENOMEM return value according to Eric. panic early instead of using swiotlb_full to panic...according to Eric/Konrad. -v3: make swiotlb_init to be notpanic, but will affect: arm64, ia64, powerpc, tile, unicore32, x86. -v4: cleanup swiotlb_init by removing swiotlb_init_with_default_size. Suggested-by: Eric W. Biederman Signed-off-by: Yinghai Lu Link: http://lkml.kernel.org/r/1359058816-7615-36-git-send-email-yinghai@kernel.org Reviewed-and-tested-by: Konrad Rzeszutek Wilk Cc: Joerg Roedel Cc: Ralf Baechle Cc: Jeremy Fitzhardinge Cc: Kyungmin Park Cc: Marek Szyprowski Cc: Arnd Bergmann Cc: Andrzej Pietrasiewicz Cc: linux-mips@linux-mips.org Cc: xen-devel@lists.xensource.com Cc: virtualization@lists.linux-foundation.org Cc: Shuah Khan Signed-off-by: H. Peter Anvin --- include/linux/swiotlb.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h index 071d62c214a6..2de42f9401d2 100644 --- a/include/linux/swiotlb.h +++ b/include/linux/swiotlb.h @@ -23,7 +23,7 @@ extern int swiotlb_force; #define IO_TLB_SHIFT 11 extern void swiotlb_init(int verbose); -extern void swiotlb_init_with_tbl(char *tlb, unsigned long nslabs, int verbose); +int swiotlb_init_with_tbl(char *tlb, unsigned long nslabs, int verbose); extern unsigned long swiotlb_nr_tbl(void); extern int swiotlb_late_init_with_tbl(char *tlb, unsigned long nslabs); -- cgit v1.2.3 From c420811f117a59a4a7d4e34b362437b91c7fafa1 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Fri, 25 Jan 2013 19:39:51 +0100 Subject: serial: ralink: adds support for the serial core found on ralink wisoc The MIPS based Ralink WiSoC platform has 1 or more 8250 compatible serial cores. To make them work we require the same quirks that are used by AU1x00. Signed-off-by: John Crispin Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_core.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 82aebc8ff77f..d97142159e0f 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -134,7 +134,7 @@ struct uart_port { #define UPIO_HUB6 (1) #define UPIO_MEM (2) #define UPIO_MEM32 (3) -#define UPIO_AU (4) /* Au1x00 type IO */ +#define UPIO_AU (4) /* Au1x00 and RT288x type IO */ #define UPIO_TSI (5) /* Tsi108/109 type IO */ unsigned int read_status_mask; /* driver specific */ -- cgit v1.2.3 From 6e69ab1361c44e3ee1398158b56d114b1aef8179 Mon Sep 17 00:00:00 2001 From: Florian Vaussard Date: Mon, 28 Jan 2013 15:00:57 +0100 Subject: pwm: Add pwm_can_sleep() as exported API to users Calls to some external PWM chips can sleep. To help users, add pwm_can_sleep() API. Cc: Thierry Reding Cc: Peter Ujfalusi Signed-off-by: Florian Vaussard Reviewed-by: Peter Ujfalusi Signed-off-by: Thierry Reding --- include/linux/pwm.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pwm.h b/include/linux/pwm.h index 6d661f32e0e4..3fef47733ea3 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -146,6 +146,8 @@ struct pwm_ops { * @base: number of first PWM controlled by this chip * @npwm: number of PWMs controlled by this chip * @pwms: array of PWM devices allocated by the framework + * @can_sleep: must be true if the .config(), .enable() or .disable() + * operations may sleep */ struct pwm_chip { struct device *dev; @@ -159,6 +161,7 @@ struct pwm_chip { struct pwm_device * (*of_xlate)(struct pwm_chip *pc, const struct of_phandle_args *args); unsigned int of_pwm_n_cells; + bool can_sleep; }; #if IS_ENABLED(CONFIG_PWM) @@ -179,6 +182,8 @@ void pwm_put(struct pwm_device *pwm); struct pwm_device *devm_pwm_get(struct device *dev, const char *consumer); void devm_pwm_put(struct device *dev, struct pwm_device *pwm); + +bool pwm_can_sleep(struct pwm_device *pwm); #else static inline int pwm_set_chip_data(struct pwm_device *pwm, void *data) { @@ -226,6 +231,11 @@ static inline struct pwm_device *devm_pwm_get(struct device *dev, static inline void devm_pwm_put(struct device *dev, struct pwm_device *pwm) { } + +static inline bool pwm_can_sleep(struct pwm_device *pwm) +{ + return false; +} #endif struct pwm_lookup { -- cgit v1.2.3 From da660b4a3b15caea9c198c4f26d1cf7023df92fc Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Fri, 4 Jan 2013 14:17:15 +0000 Subject: arm: Move sp810.h to include/linux/amba/ Since it is now used by code under drivers/clk/ it makes sense for this file to be in a more generic location. This is required for building vexpress support on arm64. Signed-off-by: Catalin Marinas Acked-by: Viresh Kumar Acked-by: Pawel Moll Cc: Shiraz Hashim Cc: Russell King Signed-off-by: Pawel Moll --- include/linux/amba/sp810.h | 64 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 include/linux/amba/sp810.h (limited to 'include/linux') diff --git a/include/linux/amba/sp810.h b/include/linux/amba/sp810.h new file mode 100644 index 000000000000..6636430dd0e6 --- /dev/null +++ b/include/linux/amba/sp810.h @@ -0,0 +1,64 @@ +/* + * arch/arm/include/asm/hardware/sp810.h + * + * ARM PrimeXsys System Controller SP810 header file + * + * Copyright (C) 2009 ST Microelectronics + * Viresh Kumar + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#ifndef __ASM_ARM_SP810_H +#define __ASM_ARM_SP810_H + +#include + +/* sysctl registers offset */ +#define SCCTRL 0x000 +#define SCSYSSTAT 0x004 +#define SCIMCTRL 0x008 +#define SCIMSTAT 0x00C +#define SCXTALCTRL 0x010 +#define SCPLLCTRL 0x014 +#define SCPLLFCTRL 0x018 +#define SCPERCTRL0 0x01C +#define SCPERCTRL1 0x020 +#define SCPEREN 0x024 +#define SCPERDIS 0x028 +#define SCPERCLKEN 0x02C +#define SCPERSTAT 0x030 +#define SCSYSID0 0xEE0 +#define SCSYSID1 0xEE4 +#define SCSYSID2 0xEE8 +#define SCSYSID3 0xEEC +#define SCITCR 0xF00 +#define SCITIR0 0xF04 +#define SCITIR1 0xF08 +#define SCITOR 0xF0C +#define SCCNTCTRL 0xF10 +#define SCCNTDATA 0xF14 +#define SCCNTSTEP 0xF18 +#define SCPERIPHID0 0xFE0 +#define SCPERIPHID1 0xFE4 +#define SCPERIPHID2 0xFE8 +#define SCPERIPHID3 0xFEC +#define SCPCELLID0 0xFF0 +#define SCPCELLID1 0xFF4 +#define SCPCELLID2 0xFF8 +#define SCPCELLID3 0xFFC + +#define SCCTRL_TIMERENnSEL_SHIFT(n) (15 + ((n) * 2)) + +static inline void sysctl_soft_reset(void __iomem *base) +{ + /* switch to slow mode */ + writel(0x2, base + SCCTRL); + + /* writing any value to SCSYSSTAT reg will reset system */ + writel(0, base + SCSYSSTAT); +} + +#endif /* __ASM_ARM_SP810_H */ -- cgit v1.2.3 From ad964704ba9326d027fc10fd0099b7c880e50172 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Tue, 29 Jan 2013 17:45:49 -0500 Subject: ring-buffer: Add stats field for amount read from trace ring buffer Add a stat about the number of events read from the ring buffer: # cat /debug/tracing/per_cpu/cpu0/stats entries: 39869 overrun: 870512 commit overrun: 0 bytes: 1449912 oldest event ts: 6561.368690 now ts: 6565.246426 dropped events: 0 read events: 112 <-- Added Signed-off-by: Steven Rostedt --- include/linux/ring_buffer.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h index 519777e3fa01..1342e69542f3 100644 --- a/include/linux/ring_buffer.h +++ b/include/linux/ring_buffer.h @@ -167,6 +167,7 @@ unsigned long ring_buffer_entries_cpu(struct ring_buffer *buffer, int cpu); unsigned long ring_buffer_overrun_cpu(struct ring_buffer *buffer, int cpu); unsigned long ring_buffer_commit_overrun_cpu(struct ring_buffer *buffer, int cpu); unsigned long ring_buffer_dropped_events_cpu(struct ring_buffer *buffer, int cpu); +unsigned long ring_buffer_read_events_cpu(struct ring_buffer *buffer, int cpu); u64 ring_buffer_time_stamp(struct ring_buffer *buffer, int cpu); void ring_buffer_normalize_time_stamp(struct ring_buffer *buffer, -- cgit v1.2.3 From debdd57f5145f3c6a4b3f8d0126abd1a2def7fc6 Mon Sep 17 00:00:00 2001 From: Hiraku Toyooka Date: Wed, 26 Dec 2012 11:53:00 +0900 Subject: tracing: Make a snapshot feature available from userspace Ftrace has a snapshot feature available from kernel space and latency tracers (e.g. irqsoff) are using it. This patch enables user applictions to take a snapshot via debugfs. Add "snapshot" debugfs file in "tracing" directory. snapshot: This is used to take a snapshot and to read the output of the snapshot. # echo 1 > snapshot This will allocate the spare buffer for snapshot (if it is not allocated), and take a snapshot. # cat snapshot This will show contents of the snapshot. # echo 0 > snapshot This will free the snapshot if it is allocated. Any other positive values will clear the snapshot contents if the snapshot is allocated, or return EINVAL if it is not allocated. Link: http://lkml.kernel.org/r/20121226025300.3252.86850.stgit@liselsia Cc: Jiri Olsa Cc: David Sharp Signed-off-by: Hiraku Toyooka [ Fixed irqsoff selftest and also a conflict with a change that fixes the update_max_tr. ] Signed-off-by: Steven Rostedt --- include/linux/ftrace_event.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index 6f8d0b77006b..13a54d0bdfa8 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h @@ -83,6 +83,9 @@ struct trace_iterator { long idx; cpumask_var_t started; + + /* it's true when current open file is snapshot */ + bool snapshot; }; enum trace_iter_flags { -- cgit v1.2.3 From 56813f798e8cb3f79a25e0523e782d910f376083 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 4 Jan 2013 13:14:34 +0100 Subject: mfd: ab8500: update header file and version detection This updates the AB8500 register map with defines for a few new chip variants and adds version detection helpers to handle the different variants. Acked-by: Samuel Ortiz Signed-off-by: Linus Walleij --- include/linux/mfd/abx500/ab8500.h | 277 ++++++++++++++++++++++++++++++-------- 1 file changed, 222 insertions(+), 55 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500/ab8500.h b/include/linux/mfd/abx500/ab8500.h index 1cb5698b4d76..e640ea059be2 100644 --- a/include/linux/mfd/abx500/ab8500.h +++ b/include/linux/mfd/abx500/ab8500.h @@ -24,7 +24,7 @@ enum ab8500_version { AB8500_VERSION_AB8500 = 0x0, AB8500_VERSION_AB8505 = 0x1, AB8500_VERSION_AB9540 = 0x2, - AB8500_VERSION_AB8540 = 0x3, + AB8500_VERSION_AB8540 = 0x4, AB8500_VERSION_UNDEFINED, }; @@ -32,6 +32,7 @@ enum ab8500_version { #define AB8500_CUTEARLY 0x00 #define AB8500_CUT1P0 0x10 #define AB8500_CUT1P1 0x11 +#define AB8500_CUT1P2 0x12 /* Only valid for AB8540 */ #define AB8500_CUT2P0 0x20 #define AB8500_CUT3P0 0x30 #define AB8500_CUT3P3 0x33 @@ -39,6 +40,7 @@ enum ab8500_version { /* * AB8500 bank addresses */ +#define AB8500_M_FSM_RANK 0x0 #define AB8500_SYS_CTRL1_BLOCK 0x1 #define AB8500_SYS_CTRL2_BLOCK 0x2 #define AB8500_REGU_CTRL1 0x3 @@ -58,6 +60,7 @@ enum ab8500_version { #define AB8500_DEVELOPMENT 0x11 #define AB8500_DEBUG 0x12 #define AB8500_PROD_TEST 0x13 +#define AB8500_STE_TEST 0x14 #define AB8500_OTP_EMUL 0x15 /* @@ -65,11 +68,11 @@ enum ab8500_version { * Values used to index into array ab8500_irq_regoffset[] defined in * drivers/mdf/ab8500-core.c */ -/* Definitions for AB8500 and AB9540 */ +/* Definitions for AB8500, AB9540 and AB8540 */ /* ab8500_irq_regoffset[0] -> IT[Source|Latch|Mask]1 */ #define AB8500_INT_MAIN_EXT_CH_NOT_OK 0 /* not 8505/9540 */ -#define AB8500_INT_UN_PLUG_TV_DET 1 /* not 8505/9540 */ -#define AB8500_INT_PLUG_TV_DET 2 /* not 8505/9540 */ +#define AB8500_INT_UN_PLUG_TV_DET 1 /* not 8505/9540/8540 */ +#define AB8500_INT_PLUG_TV_DET 2 /* not 8505/9540/8540 */ #define AB8500_INT_TEMP_WARM 3 #define AB8500_INT_PON_KEY2DB_F 4 #define AB8500_INT_PON_KEY2DB_R 5 @@ -77,18 +80,19 @@ enum ab8500_version { #define AB8500_INT_PON_KEY1DB_R 7 /* ab8500_irq_regoffset[1] -> IT[Source|Latch|Mask]2 */ #define AB8500_INT_BATT_OVV 8 -#define AB8500_INT_MAIN_CH_UNPLUG_DET 10 /* not 8505 */ -#define AB8500_INT_MAIN_CH_PLUG_DET 11 /* not 8505 */ +#define AB8500_INT_MAIN_CH_UNPLUG_DET 10 /* not 8505/8540 */ +#define AB8500_INT_MAIN_CH_PLUG_DET 11 /* not 8505/8540 */ #define AB8500_INT_VBUS_DET_F 14 #define AB8500_INT_VBUS_DET_R 15 /* ab8500_irq_regoffset[2] -> IT[Source|Latch|Mask]3 */ #define AB8500_INT_VBUS_CH_DROP_END 16 #define AB8500_INT_RTC_60S 17 #define AB8500_INT_RTC_ALARM 18 +#define AB8540_INT_BIF_INT 19 #define AB8500_INT_BAT_CTRL_INDB 20 #define AB8500_INT_CH_WD_EXP 21 #define AB8500_INT_VBUS_OVV 22 -#define AB8500_INT_MAIN_CH_DROP_END 23 /* not 8505/9540 */ +#define AB8500_INT_MAIN_CH_DROP_END 23 /* not 8505/9540/8540 */ /* ab8500_irq_regoffset[3] -> IT[Source|Latch|Mask]4 */ #define AB8500_INT_CCN_CONV_ACC 24 #define AB8500_INT_INT_AUD 25 @@ -99,7 +103,7 @@ enum ab8500_version { #define AB8500_INT_BUP_CHG_NOT_OK 30 #define AB8500_INT_BUP_CHG_OK 31 /* ab8500_irq_regoffset[4] -> IT[Source|Latch|Mask]5 */ -#define AB8500_INT_GP_HW_ADC_CONV_END 32 /* not 8505 */ +#define AB8500_INT_GP_HW_ADC_CONV_END 32 /* not 8505/8540 */ #define AB8500_INT_ACC_DETECT_1DB_F 33 #define AB8500_INT_ACC_DETECT_1DB_R 34 #define AB8500_INT_ACC_DETECT_22DB_F 35 @@ -108,23 +112,23 @@ enum ab8500_version { #define AB8500_INT_ACC_DETECT_21DB_R 38 #define AB8500_INT_GP_SW_ADC_CONV_END 39 /* ab8500_irq_regoffset[5] -> IT[Source|Latch|Mask]7 */ -#define AB8500_INT_GPIO6R 40 /* not 8505/9540 */ -#define AB8500_INT_GPIO7R 41 /* not 8505/9540 */ -#define AB8500_INT_GPIO8R 42 /* not 8505/9540 */ -#define AB8500_INT_GPIO9R 43 /* not 8505/9540 */ -#define AB8500_INT_GPIO10R 44 -#define AB8500_INT_GPIO11R 45 -#define AB8500_INT_GPIO12R 46 /* not 8505 */ -#define AB8500_INT_GPIO13R 47 +#define AB8500_INT_GPIO6R 40 /* not 8505/9540/8540 */ +#define AB8500_INT_GPIO7R 41 /* not 8505/9540/8540 */ +#define AB8500_INT_GPIO8R 42 /* not 8505/9540/8540 */ +#define AB8500_INT_GPIO9R 43 /* not 8505/9540/8540 */ +#define AB8500_INT_GPIO10R 44 /* not 8540 */ +#define AB8500_INT_GPIO11R 45 /* not 8540 */ +#define AB8500_INT_GPIO12R 46 /* not 8505/8540 */ +#define AB8500_INT_GPIO13R 47 /* not 8540 */ /* ab8500_irq_regoffset[6] -> IT[Source|Latch|Mask]8 */ -#define AB8500_INT_GPIO24R 48 /* not 8505 */ -#define AB8500_INT_GPIO25R 49 /* not 8505 */ -#define AB8500_INT_GPIO36R 50 /* not 8505/9540 */ -#define AB8500_INT_GPIO37R 51 /* not 8505/9540 */ -#define AB8500_INT_GPIO38R 52 /* not 8505/9540 */ -#define AB8500_INT_GPIO39R 53 /* not 8505/9540 */ -#define AB8500_INT_GPIO40R 54 -#define AB8500_INT_GPIO41R 55 +#define AB8500_INT_GPIO24R 48 /* not 8505/8540 */ +#define AB8500_INT_GPIO25R 49 /* not 8505/8540 */ +#define AB8500_INT_GPIO36R 50 /* not 8505/9540/8540 */ +#define AB8500_INT_GPIO37R 51 /* not 8505/9540/8540 */ +#define AB8500_INT_GPIO38R 52 /* not 8505/9540/8540 */ +#define AB8500_INT_GPIO39R 53 /* not 8505/9540/8540 */ +#define AB8500_INT_GPIO40R 54 /* not 8540 */ +#define AB8500_INT_GPIO41R 55 /* not 8540 */ /* ab8500_irq_regoffset[7] -> IT[Source|Latch|Mask]9 */ #define AB8500_INT_GPIO6F 56 /* not 8505/9540 */ #define AB8500_INT_GPIO7F 57 /* not 8505/9540 */ @@ -135,14 +139,14 @@ enum ab8500_version { #define AB8500_INT_GPIO12F 62 /* not 8505 */ #define AB8500_INT_GPIO13F 63 /* ab8500_irq_regoffset[8] -> IT[Source|Latch|Mask]10 */ -#define AB8500_INT_GPIO24F 64 /* not 8505 */ -#define AB8500_INT_GPIO25F 65 /* not 8505 */ -#define AB8500_INT_GPIO36F 66 /* not 8505/9540 */ -#define AB8500_INT_GPIO37F 67 /* not 8505/9540 */ -#define AB8500_INT_GPIO38F 68 /* not 8505/9540 */ -#define AB8500_INT_GPIO39F 69 /* not 8505/9540 */ -#define AB8500_INT_GPIO40F 70 -#define AB8500_INT_GPIO41F 71 +#define AB8500_INT_GPIO24F 64 /* not 8505/8540 */ +#define AB8500_INT_GPIO25F 65 /* not 8505/8540 */ +#define AB8500_INT_GPIO36F 66 /* not 8505/9540/8540 */ +#define AB8500_INT_GPIO37F 67 /* not 8505/9540/8540 */ +#define AB8500_INT_GPIO38F 68 /* not 8505/9540/8540 */ +#define AB8500_INT_GPIO39F 69 /* not 8505/9540/8540 */ +#define AB8500_INT_GPIO40F 70 /* not 8540 */ +#define AB8500_INT_GPIO41F 71 /* not 8540 */ /* ab8500_irq_regoffset[9] -> IT[Source|Latch|Mask]12 */ #define AB8500_INT_ADP_SOURCE_ERROR 72 #define AB8500_INT_ADP_SINK_ERROR 73 @@ -160,42 +164,44 @@ enum ab8500_version { #define AB8500_INT_SRP_DETECT 88 #define AB8500_INT_USB_CHARGER_NOT_OKR 89 #define AB8500_INT_ID_WAKEUP_R 90 +#define AB8500_INT_ID_DET_PLUGR 91 /* 8505/9540 cut2.0 */ #define AB8500_INT_ID_DET_R1R 92 #define AB8500_INT_ID_DET_R2R 93 #define AB8500_INT_ID_DET_R3R 94 #define AB8500_INT_ID_DET_R4R 95 /* ab8500_irq_regoffset[12] -> IT[Source|Latch|Mask]21 */ -#define AB8500_INT_ID_WAKEUP_F 96 -#define AB8500_INT_ID_DET_R1F 98 -#define AB8500_INT_ID_DET_R2F 99 -#define AB8500_INT_ID_DET_R3F 100 -#define AB8500_INT_ID_DET_R4F 101 -#define AB8500_INT_CHAUTORESTARTAFTSEC 102 +#define AB8500_INT_ID_WAKEUP_F 96 /* not 8505/9540 */ +#define AB8500_INT_ID_DET_PLUGF 97 /* 8505/9540 cut2.0 */ +#define AB8500_INT_ID_DET_R1F 98 /* not 8505/9540 */ +#define AB8500_INT_ID_DET_R2F 99 /* not 8505/9540 */ +#define AB8500_INT_ID_DET_R3F 100 /* not 8505/9540 */ +#define AB8500_INT_ID_DET_R4F 101 /* not 8505/9540 */ +#define AB8500_INT_CHAUTORESTARTAFTSEC 102 /* not 8505/9540 */ #define AB8500_INT_CHSTOPBYSEC 103 /* ab8500_irq_regoffset[13] -> IT[Source|Latch|Mask]22 */ #define AB8500_INT_USB_CH_TH_PROT_F 104 -#define AB8500_INT_USB_CH_TH_PROT_R 105 +#define AB8500_INT_USB_CH_TH_PROT_R 105 #define AB8500_INT_MAIN_CH_TH_PROT_F 106 /* not 8505/9540 */ #define AB8500_INT_MAIN_CH_TH_PROT_R 107 /* not 8505/9540 */ #define AB8500_INT_CHCURLIMNOHSCHIRP 109 #define AB8500_INT_CHCURLIMHSCHIRP 110 #define AB8500_INT_XTAL32K_KO 111 -/* Definitions for AB9540 */ +/* Definitions for AB9540 / AB8505 */ /* ab8500_irq_regoffset[14] -> IT[Source|Latch|Mask]13 */ -#define AB9540_INT_GPIO50R 113 -#define AB9540_INT_GPIO51R 114 /* not 8505 */ -#define AB9540_INT_GPIO52R 115 -#define AB9540_INT_GPIO53R 116 -#define AB9540_INT_GPIO54R 117 /* not 8505 */ +#define AB9540_INT_GPIO50R 113 /* not 8540 */ +#define AB9540_INT_GPIO51R 114 /* not 8505/8540 */ +#define AB9540_INT_GPIO52R 115 /* not 8540 */ +#define AB9540_INT_GPIO53R 116 /* not 8540 */ +#define AB9540_INT_GPIO54R 117 /* not 8505/8540 */ #define AB9540_INT_IEXT_CH_RF_BFN_R 118 -#define AB9540_INT_IEXT_CH_RF_BFN_F 119 /* ab8500_irq_regoffset[15] -> IT[Source|Latch|Mask]14 */ -#define AB9540_INT_GPIO50F 121 -#define AB9540_INT_GPIO51F 122 /* not 8505 */ -#define AB9540_INT_GPIO52F 123 -#define AB9540_INT_GPIO53F 124 -#define AB9540_INT_GPIO54F 125 /* not 8505 */ +#define AB9540_INT_GPIO50F 121 /* not 8540 */ +#define AB9540_INT_GPIO51F 122 /* not 8505/8540 */ +#define AB9540_INT_GPIO52F 123 /* not 8540 */ +#define AB9540_INT_GPIO53F 124 /* not 8540 */ +#define AB9540_INT_GPIO54F 125 /* not 8505/8540 */ +#define AB9540_INT_IEXT_CH_RF_BFN_F 126 /* ab8500_irq_regoffset[16] -> IT[Source|Latch|Mask]25 */ #define AB8505_INT_KEYSTUCK 128 #define AB8505_INT_IKR 129 @@ -204,6 +210,87 @@ enum ab8500_version { #define AB8505_INT_KEYDEGLITCH 132 #define AB8505_INT_MODPWRSTATUSF 134 #define AB8505_INT_MODPWRSTATUSR 135 +/* ab8500_irq_regoffset[17] -> IT[Source|Latch|Mask]6 */ +#define AB8500_INT_HOOK_DET_NEG_F 138 +#define AB8500_INT_HOOK_DET_NEG_R 139 +#define AB8500_INT_HOOK_DET_POS_F 140 +#define AB8500_INT_HOOK_DET_POS_R 141 +#define AB8500_INT_PLUG_DET_COMP_F 142 +#define AB8500_INT_PLUG_DET_COMP_R 143 +/* ab8500_irq_regoffset[18] -> IT[Source|Latch|Mask]23 */ +#define AB8505_INT_COLL 144 +#define AB8505_INT_RESERR 145 +#define AB8505_INT_FRAERR 146 +#define AB8505_INT_COMERR 147 +#define AB8505_INT_SPDSET 148 +#define AB8505_INT_DSENT 149 +#define AB8505_INT_DREC 150 +#define AB8505_INT_ACC_INT 151 +/* ab8500_irq_regoffset[19] -> IT[Source|Latch|Mask]24 */ +#define AB8505_INT_NOPINT 152 +/* ab8540_irq_regoffset[20] -> IT[Source|Latch|Mask]26 */ +#define AB8540_INT_IDPLUGDETCOMPF 160 +#define AB8540_INT_IDPLUGDETCOMPR 161 +#define AB8540_INT_FMDETCOMPLOF 162 +#define AB8540_INT_FMDETCOMPLOR 163 +#define AB8540_INT_FMDETCOMPHIF 164 +#define AB8540_INT_FMDETCOMPHIR 165 +#define AB8540_INT_ID5VDETCOMPF 166 +#define AB8540_INT_ID5VDETCOMPR 167 +/* ab8540_irq_regoffset[21] -> IT[Source|Latch|Mask]27 */ +#define AB8540_INT_GPIO43F 168 +#define AB8540_INT_GPIO43R 169 +#define AB8540_INT_GPIO44F 170 +#define AB8540_INT_GPIO44R 171 +#define AB8540_INT_KEYPOSDETCOMPF 172 +#define AB8540_INT_KEYPOSDETCOMPR 173 +#define AB8540_INT_KEYNEGDETCOMPF 174 +#define AB8540_INT_KEYNEGDETCOMPR 175 +/* ab8540_irq_regoffset[22] -> IT[Source|Latch|Mask]28 */ +#define AB8540_INT_GPIO1VBATF 176 +#define AB8540_INT_GPIO1VBATR 177 +#define AB8540_INT_GPIO2VBATF 178 +#define AB8540_INT_GPIO2VBATR 179 +#define AB8540_INT_GPIO3VBATF 180 +#define AB8540_INT_GPIO3VBATR 181 +#define AB8540_INT_GPIO4VBATF 182 +#define AB8540_INT_GPIO4VBATR 183 +/* ab8540_irq_regoffset[23] -> IT[Source|Latch|Mask]29 */ +#define AB8540_INT_SYSCLKREQ2F 184 +#define AB8540_INT_SYSCLKREQ2R 185 +#define AB8540_INT_SYSCLKREQ3F 186 +#define AB8540_INT_SYSCLKREQ3R 187 +#define AB8540_INT_SYSCLKREQ4F 188 +#define AB8540_INT_SYSCLKREQ4R 189 +#define AB8540_INT_SYSCLKREQ5F 190 +#define AB8540_INT_SYSCLKREQ5R 191 +/* ab8540_irq_regoffset[24] -> IT[Source|Latch|Mask]30 */ +#define AB8540_INT_PWMOUT1F 192 +#define AB8540_INT_PWMOUT1R 193 +#define AB8540_INT_PWMCTRL0F 194 +#define AB8540_INT_PWMCTRL0R 195 +#define AB8540_INT_PWMCTRL1F 196 +#define AB8540_INT_PWMCTRL1R 197 +#define AB8540_INT_SYSCLKREQ6F 198 +#define AB8540_INT_SYSCLKREQ6R 199 +/* ab8540_irq_regoffset[25] -> IT[Source|Latch|Mask]31 */ +#define AB8540_INT_PWMEXTVIBRA1F 200 +#define AB8540_INT_PWMEXTVIBRA1R 201 +#define AB8540_INT_PWMEXTVIBRA2F 202 +#define AB8540_INT_PWMEXTVIBRA2R 203 +#define AB8540_INT_PWMOUT2F 204 +#define AB8540_INT_PWMOUT2R 205 +#define AB8540_INT_PWMOUT3F 206 +#define AB8540_INT_PWMOUT3R 207 +/* ab8540_irq_regoffset[26] -> IT[Source|Latch|Mask]32 */ +#define AB8540_INT_ADDATA2F 208 +#define AB8540_INT_ADDATA2R 209 +#define AB8540_INT_DADATA2F 210 +#define AB8540_INT_DADATA2R 211 +#define AB8540_INT_FSYNC2F 212 +#define AB8540_INT_FSYNC2R 213 +#define AB8540_INT_BITCLK2F 214 +#define AB8540_INT_BITCLK2R 215 /* * AB8500_AB9540_NR_IRQS is used when configuring the IRQ numbers for the @@ -213,13 +300,24 @@ enum ab8500_version { * which is larger. */ #define AB8500_NR_IRQS 112 -#define AB8505_NR_IRQS 136 -#define AB9540_NR_IRQS 136 +#define AB8505_NR_IRQS 153 +#define AB9540_NR_IRQS 153 +#define AB8540_NR_IRQS 216 /* This is set to the roof of any AB8500 chip variant IRQ counts */ -#define AB8500_MAX_NR_IRQS AB9540_NR_IRQS +#define AB8500_MAX_NR_IRQS AB8540_NR_IRQS #define AB8500_NUM_IRQ_REGS 14 -#define AB9540_NUM_IRQ_REGS 17 +#define AB9540_NUM_IRQ_REGS 20 +#define AB8540_NUM_IRQ_REGS 27 + +/* Turn On Status Event */ +#define AB8500_POR_ON_VBAT 0x01 +#define AB8500_POW_KEY_1_ON 0x02 +#define AB8500_POW_KEY_2_ON 0x04 +#define AB8500_RTC_ALARM 0x08 +#define AB8500_MAIN_CH_DET 0x10 +#define AB8500_VBUS_DET 0x20 +#define AB8500_USB_ID_DET 0x40 /** * struct ab8500 - ab8500 internal structure @@ -335,10 +433,79 @@ static inline int is_ab8500_2p0_or_earlier(struct ab8500 *ab) return (is_ab8500(ab) && (ab->chip_id <= AB8500_CUT2P0)); } +static inline int is_ab8500_3p3_or_earlier(struct ab8500 *ab) +{ + return (is_ab8500(ab) && (ab->chip_id <= AB8500_CUT3P3)); +} + /* exclude also ab8505, ab9540... */ static inline int is_ab8500_2p0(struct ab8500 *ab) { return (is_ab8500(ab) && (ab->chip_id == AB8500_CUT2P0)); } +static inline int is_ab8505_1p0_or_earlier(struct ab8500 *ab) +{ + return (is_ab8505(ab) && (ab->chip_id <= AB8500_CUT1P0)); +} + +static inline int is_ab8505_2p0(struct ab8500 *ab) +{ + return (is_ab8505(ab) && (ab->chip_id == AB8500_CUT2P0)); +} + +static inline int is_ab9540_1p0_or_earlier(struct ab8500 *ab) +{ + return (is_ab9540(ab) && (ab->chip_id <= AB8500_CUT1P0)); +} + +static inline int is_ab9540_2p0(struct ab8500 *ab) +{ + return (is_ab9540(ab) && (ab->chip_id == AB8500_CUT2P0)); +} + +/* + * Be careful, the marketing name for this chip is 2.1 + * but the value read from the chip is 3.0 (0x30) + */ +static inline int is_ab9540_3p0(struct ab8500 *ab) +{ + return (is_ab9540(ab) && (ab->chip_id == AB8500_CUT3P0)); +} + +static inline int is_ab8540_1p0_or_earlier(struct ab8500 *ab) +{ + return is_ab8540(ab) && (ab->chip_id <= AB8500_CUT1P0); +} + +static inline int is_ab8540_1p1_or_earlier(struct ab8500 *ab) +{ + return is_ab8540(ab) && (ab->chip_id <= AB8500_CUT1P1); +} + +static inline int is_ab8540_1p2_or_earlier(struct ab8500 *ab) +{ + return is_ab8540(ab) && (ab->chip_id <= AB8500_CUT1P2); +} + +static inline int is_ab8540_2p0_or_earlier(struct ab8500 *ab) +{ + return is_ab8540(ab) && (ab->chip_id <= AB8500_CUT2P0); +} + +static inline int is_ab8540_2p0(struct ab8500 *ab) +{ + return is_ab8540(ab) && (ab->chip_id == AB8500_CUT2P0); +} + +static inline int is_ab8505_2p0_earlier(struct ab8500 *ab) +{ + return (is_ab8505(ab) && (ab->chip_id < AB8500_CUT2P0)); +} + +static inline int is_ab9540_2p0_or_earlier(struct ab8500 *ab) +{ + return (is_ab9540(ab) && (ab->chip_id < AB8500_CUT2P0)); +} + #endif /* MFD_AB8500_H */ -- cgit v1.2.3 From 0493e6493031523f78680b4469f02fc1b2d440f3 Mon Sep 17 00:00:00 2001 From: Patrice Chotard Date: Tue, 8 Jan 2013 10:41:02 +0100 Subject: pinctrl: add abx500 pinctrl driver core This adds the AB8500 core driver, which will be utilized by the follow-on drivers for different ABx500 variants. Sselect the driver from the DBX500_SOC, as this chip is powering and clocking that SoC. Cc: Samuel Ortiz Signed-off-by: Patrice Chotard Signed-off-by: Linus Walleij --- include/linux/mfd/abx500/ab8500-gpio.h | 15 +++++++++++++-- include/linux/mfd/abx500/ab8500.h | 2 +- 2 files changed, 14 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500/ab8500-gpio.h b/include/linux/mfd/abx500/ab8500-gpio.h index 2387c207ea86..e8c8281e194a 100644 --- a/include/linux/mfd/abx500/ab8500-gpio.h +++ b/include/linux/mfd/abx500/ab8500-gpio.h @@ -14,10 +14,21 @@ * registers. */ -struct ab8500_gpio_platform_data { +struct abx500_gpio_platform_data { int gpio_base; u32 irq_base; - u8 config_reg[8]; +}; + +enum abx500_gpio_pull_updown { + ABX500_GPIO_PULL_DOWN = 0x0, + ABX500_GPIO_PULL_NONE = 0x1, + ABX500_GPIO_PULL_UP = 0x3, +}; + +enum abx500_gpio_vinsel { + ABX500_GPIO_VINSEL_VBAT = 0x0, + ABX500_GPIO_VINSEL_VIN_1V8 = 0x1, + ABX500_GPIO_VINSEL_VDD_BIF = 0x2, }; #endif /* _AB8500_GPIO_H */ diff --git a/include/linux/mfd/abx500/ab8500.h b/include/linux/mfd/abx500/ab8500.h index e640ea059be2..fc0534483c72 100644 --- a/include/linux/mfd/abx500/ab8500.h +++ b/include/linux/mfd/abx500/ab8500.h @@ -385,7 +385,7 @@ struct ab8500_platform_data { struct ab8500_regulator_reg_init *regulator_reg_init; int num_regulator; struct regulator_init_data *regulator; - struct ab8500_gpio_platform_data *gpio; + struct abx500_gpio_platform_data *gpio; struct ab8500_codec_platform_data *codec; }; -- cgit v1.2.3 From 83e68189745ad931c2afd45d8ee3303929233e7f Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Wed, 14 Nov 2012 09:42:35 +0000 Subject: efi: Make 'efi_enabled' a function to query EFI facilities Originally 'efi_enabled' indicated whether a kernel was booted from EFI firmware. Over time its semantics have changed, and it now indicates whether or not we are booted on an EFI machine with bit-native firmware, e.g. 64-bit kernel with 64-bit firmware. The immediate motivation for this patch is the bug report at, https://bugs.launchpad.net/ubuntu-cdimage/+bug/1040557 which details how running a platform driver on an EFI machine that is designed to run under BIOS can cause the machine to become bricked. Also, the following report, https://bugzilla.kernel.org/show_bug.cgi?id=47121 details how running said driver can also cause Machine Check Exceptions. Drivers need a new means of detecting whether they're running on an EFI machine, as sadly the expression, if (!efi_enabled) hasn't been a sufficient condition for quite some time. Users actually want to query 'efi_enabled' for different reasons - what they really want access to is the list of available EFI facilities. For instance, the x86 reboot code needs to know whether it can invoke the ResetSystem() function provided by the EFI runtime services, while the ACPI OSL code wants to know whether the EFI config tables were mapped successfully. There are also checks in some of the platform driver code to simply see if they're running on an EFI machine (which would make it a bad idea to do BIOS-y things). This patch is a prereq for the samsung-laptop fix patch. Cc: David Airlie Cc: Corentin Chary Cc: Matthew Garrett Cc: Dave Jiang Cc: Olof Johansson Cc: Peter Jones Cc: Colin Ian King Cc: Steve Langasek Cc: Tony Luck Cc: Konrad Rzeszutek Wilk Cc: Rafael J. Wysocki Cc: Signed-off-by: Matt Fleming Signed-off-by: H. Peter Anvin --- include/linux/efi.h | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/efi.h b/include/linux/efi.h index 8b84916dc671..7a9498ab3c2d 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -618,18 +618,30 @@ extern int __init efi_setup_pcdp_console(char *); #endif /* - * We play games with efi_enabled so that the compiler will, if possible, remove - * EFI-related code altogether. + * We play games with efi_enabled so that the compiler will, if + * possible, remove EFI-related code altogether. */ +#define EFI_BOOT 0 /* Were we booted from EFI? */ +#define EFI_SYSTEM_TABLES 1 /* Can we use EFI system tables? */ +#define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */ +#define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */ +#define EFI_MEMMAP 4 /* Can we use EFI memory map? */ +#define EFI_64BIT 5 /* Is the firmware 64-bit? */ + #ifdef CONFIG_EFI # ifdef CONFIG_X86 - extern int efi_enabled; - extern bool efi_64bit; +extern int efi_enabled(int facility); # else -# define efi_enabled 1 +static inline int efi_enabled(int facility) +{ + return 1; +} # endif #else -# define efi_enabled 0 +static inline int efi_enabled(int facility) +{ + return 0; +} #endif /* -- cgit v1.2.3 From a6ca2e10f795111a90a4efabb07717258669e03d Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 26 Jan 2013 21:38:35 +0100 Subject: ssb: add gpio_to_irq The old bcm47xx gpio code had support for gpio_to_irq, but the new code did not provide this function, but returned -ENXIO all the time. This patch adds the missing function. arch/mips/bcm47xx/wgt634u.c calls gpio_to_irq() and got the correct irq number with the old gpio handling code. With this patch the code in wgt634u.c should work again. I do not have a wgt634u to test this. Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/ssb/ssb_driver_mips.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb_driver_mips.h b/include/linux/ssb/ssb_driver_mips.h index 07a9c7a2e088..afe79d40a99e 100644 --- a/include/linux/ssb/ssb_driver_mips.h +++ b/include/linux/ssb/ssb_driver_mips.h @@ -45,6 +45,11 @@ void ssb_mipscore_init(struct ssb_mipscore *mcore) { } +static inline unsigned int ssb_mips_irq(struct ssb_device *dev) +{ + return 0; +} + #endif /* CONFIG_SSB_DRIVER_MIPS */ #endif /* LINUX_SSB_MIPSCORE_H_ */ -- cgit v1.2.3 From 8f1ca2683225afa21b827ff620a6225c390771a9 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 26 Jan 2013 21:39:44 +0100 Subject: bcma: add gpio_to_irq The old bcm47xx gpio code had support for gpio_to_irq, but the new code did not provide this function, but returned -ENXIO all the time. This patch adds the missing function. Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- include/linux/bcma/bcma_driver_mips.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_mips.h b/include/linux/bcma/bcma_driver_mips.h index 0d1ea297851a..fb61f3fb4ddb 100644 --- a/include/linux/bcma/bcma_driver_mips.h +++ b/include/linux/bcma/bcma_driver_mips.h @@ -42,13 +42,18 @@ struct bcma_drv_mips { #ifdef CONFIG_BCMA_DRIVER_MIPS extern void bcma_core_mips_init(struct bcma_drv_mips *mcore); extern void bcma_core_mips_early_init(struct bcma_drv_mips *mcore); + +extern unsigned int bcma_core_irq(struct bcma_device *core); #else static inline void bcma_core_mips_init(struct bcma_drv_mips *mcore) { } static inline void bcma_core_mips_early_init(struct bcma_drv_mips *mcore) { } + +static inline unsigned int bcma_core_irq(struct bcma_device *core) +{ + return 0; +} #endif extern u32 bcma_cpu_clock(struct bcma_drv_mips *mcore); -extern unsigned int bcma_core_irq(struct bcma_device *core); - #endif /* LINUX_BCMA_DRIVER_MIPS_H_ */ -- cgit v1.2.3 From 70c37bf97f2a91accba76080db69144f3b69f736 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Mon, 28 Jan 2013 23:51:28 +0000 Subject: net: usbnet: prevent buggy devices from killing us MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit A device sending 0 length frames as fast as it can has been observed killing the host system due to the resulting memory pressure. Temporarily disable RX skb allocation and URB submission when the current error ratio is high, preventing us from trying to allocate an infinite number of skbs. Reenable as soon as we are finished processing the done queue, allowing the device to continue working after short error bursts. Signed-off-by: Bjørn Mork Acked-by: Oliver Neukum Signed-off-by: David S. Miller --- include/linux/usb/usbnet.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h index 5de7a220e986..0de078d4cdb9 100644 --- a/include/linux/usb/usbnet.h +++ b/include/linux/usb/usbnet.h @@ -33,6 +33,7 @@ struct usbnet { wait_queue_head_t *wait; struct mutex phy_mutex; unsigned char suspend_count; + unsigned char pkt_cnt, pkt_err; /* i/o info: pipes etc */ unsigned in, out; @@ -70,6 +71,7 @@ struct usbnet { # define EVENT_DEV_OPEN 7 # define EVENT_DEVICE_REPORT_IDLE 8 # define EVENT_NO_RUNTIME_PM 9 +# define EVENT_RX_KILL 10 }; static inline struct usb_driver *driver_of(struct usb_interface *intf) -- cgit v1.2.3 From 18367681a10bd29c3f2305e6b7b984de5b33d548 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?YOSHIFUJI=20Hideaki=20/=20=E5=90=89=E8=97=A4=E8=8B=B1?= =?UTF-8?q?=E6=98=8E?= Date: Wed, 30 Jan 2013 09:27:52 +0000 Subject: ipv6 flowlabel: Convert np->ipv6_fl_list to RCU. Signed-off-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller --- include/linux/ipv6.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h index e971e3742172..850e95bc766c 100644 --- a/include/linux/ipv6.h +++ b/include/linux/ipv6.h @@ -214,7 +214,7 @@ struct ipv6_pinfo { struct ipv6_mc_socklist __rcu *ipv6_mc_list; struct ipv6_ac_socklist *ipv6_ac_list; - struct ipv6_fl_socklist *ipv6_fl_list; + struct ipv6_fl_socklist __rcu *ipv6_fl_list; struct ipv6_txoptions *opt; struct sk_buff *pktoptions; -- cgit v1.2.3 From 7c9c003c68de51fb8712a01e904444ef40c742f5 Mon Sep 17 00:00:00 2001 From: Myron Stowe Date: Fri, 25 Jan 2013 17:55:39 -0700 Subject: PCI: Introduce accessor to retrieve PCIe Capabilities Register Provide an accessor to retrieve the PCI Express device's Capabilities Register. Signed-off-by: Myron Stowe Signed-off-by: Bjorn Helgaas --- include/linux/pci.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 15472d691ee6..78581e1d3f64 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1692,6 +1692,15 @@ static inline bool pci_is_pcie(struct pci_dev *dev) return !!pci_pcie_cap(dev); } +/** + * pcie_caps_reg - get the PCIe Capabilities Register + * @dev: PCI device + */ +static inline u16 pcie_caps_reg(const struct pci_dev *dev) +{ + return dev->pcie_flags_reg; +} + /** * pci_pcie_type - get the PCIe device/port type * @dev: PCI device -- cgit v1.2.3 From 1c531d82ee1a220ae7132ba0eb31edaf186b56d1 Mon Sep 17 00:00:00 2001 From: Myron Stowe Date: Fri, 25 Jan 2013 17:55:45 -0700 Subject: PCI: Use PCI Express Capability accessor Use PCI Express Capability access functions to simplify device Capabilities Register usages. Signed-off-by: Myron Stowe Signed-off-by: Bjorn Helgaas --- include/linux/pci.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 78581e1d3f64..63b36281afce 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1707,7 +1707,7 @@ static inline u16 pcie_caps_reg(const struct pci_dev *dev) */ static inline int pci_pcie_type(const struct pci_dev *dev) { - return (dev->pcie_flags_reg & PCI_EXP_FLAGS_TYPE) >> 4; + return (pcie_caps_reg(dev) & PCI_EXP_FLAGS_TYPE) >> 4; } void pci_request_acs(void); -- cgit v1.2.3 From d560040f7d6fbe0a2990b8f6edca1815e19e72f5 Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Thu, 31 Jan 2013 11:12:56 +0100 Subject: spi: spi-gpio: fix compilation warning on 64 bits systems SPI_GPIO_NO_MOSI and SPI_GPIO_NO_MISO flags are type casted to unsigned long, yet, they are to be stored in an unsigned int field in the spi_gpio_platform_data structure. This leads to the following warning during compilation on 64 bits systems: warning: large integer implicitly truncated to unsigned type [-Woverflow] Signed-off-by: Maxime Ripard Reported-by: Fengguang Wu Signed-off-by: Mark Brown --- include/linux/spi/spi_gpio.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/spi/spi_gpio.h b/include/linux/spi/spi_gpio.h index 369b3d7d5b95..1634ce31c06d 100644 --- a/include/linux/spi/spi_gpio.h +++ b/include/linux/spi/spi_gpio.h @@ -62,8 +62,8 @@ */ struct spi_gpio_platform_data { unsigned sck; - unsigned mosi; - unsigned miso; + unsigned long mosi; + unsigned long miso; u16 num_chipselect; }; -- cgit v1.2.3 From 2663960c159f23cbfb8e196c96e9fc9f3b5f1a8d Mon Sep 17 00:00:00 2001 From: Sukadev Bhattiprolu Date: Tue, 22 Jan 2013 22:24:23 -0800 Subject: perf: Make EVENT_ATTR global Rename EVENT_ATTR() to PMU_EVENT_ATTR() and make it global so it is available to all architectures. Further to allow architectures flexibility, have PMU_EVENT_ATTR() pass in the variable name as a parameter. Changelog[v2] - [Jiri Olsa] No need to define PMU_EVENT_PTR() Signed-off-by: Sukadev Bhattiprolu Acked-by: Jiri Olsa Cc: Andi Kleen Cc: Anton Blanchard Cc: Ingo Molnar Cc: Jiri Olsa Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Robert Richter Cc: Stephane Eranian Cc: linuxppc-dev@ozlabs.org Link: http://lkml.kernel.org/r/20130123062422.GC13720@us.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- include/linux/perf_event.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 6bfb2faa0b19..42adf012145d 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -817,6 +817,17 @@ do { \ } while (0) +struct perf_pmu_events_attr { + struct device_attribute attr; + u64 id; +}; + +#define PMU_EVENT_ATTR(_name, _var, _id, _show) \ +static struct perf_pmu_events_attr _var = { \ + .attr = __ATTR(_name, 0444, _show, NULL), \ + .id = _id, \ +}; + #define PMU_FORMAT_ATTR(_name, _format) \ static ssize_t \ _name##_show(struct device *dev, \ -- cgit v1.2.3 From 955154fa33df2b74f0fea8e7c84df6dfd954dab2 Mon Sep 17 00:00:00 2001 From: Matan Barak Date: Wed, 30 Jan 2013 23:07:10 +0000 Subject: net/mlx4_en: Don't reassign port mac address on firmware that supports it Mac reassignments should only be done when not supported by the firmware. To accomplish that, checking firmware capability bit to know whether we should reassign macs in the driver. Signed-off-by: Matan Barak Signed-off-by: Amir Vadai Signed-off-by: David S. Miller --- include/linux/mlx4/device.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index 20ea939c22a6..1883e8e84718 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -150,7 +150,8 @@ enum { MLX4_DEV_CAP_FLAG2_RSS = 1LL << 0, MLX4_DEV_CAP_FLAG2_RSS_TOP = 1LL << 1, MLX4_DEV_CAP_FLAG2_RSS_XOR = 1LL << 2, - MLX4_DEV_CAP_FLAG2_FS_EN = 1LL << 3 + MLX4_DEV_CAP_FLAG2_FS_EN = 1LL << 3, + MLX4_DEV_CAP_FLAGS2_REASSIGN_MAC_EN = 1LL << 4 }; enum { -- cgit v1.2.3 From 23491b513bcd3dfe4ddb94547d73d9deb94eda44 Mon Sep 17 00:00:00 2001 From: Denis Ciocca Date: Fri, 25 Jan 2013 23:44:00 +0000 Subject: iio:common: Add STMicroelectronics common library This patch add a generic library for STMicroelectronics 3-axis sensors. Signed-off-by: Denis Ciocca Reviewed-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- include/linux/iio/common/st_sensors.h | 274 ++++++++++++++++++++++++++++++ include/linux/iio/common/st_sensors_i2c.h | 20 +++ include/linux/iio/common/st_sensors_spi.h | 20 +++ 3 files changed, 314 insertions(+) create mode 100644 include/linux/iio/common/st_sensors.h create mode 100644 include/linux/iio/common/st_sensors_i2c.h create mode 100644 include/linux/iio/common/st_sensors_spi.h (limited to 'include/linux') diff --git a/include/linux/iio/common/st_sensors.h b/include/linux/iio/common/st_sensors.h new file mode 100644 index 000000000000..3cc85715491f --- /dev/null +++ b/include/linux/iio/common/st_sensors.h @@ -0,0 +1,274 @@ +/* + * STMicroelectronics sensors library driver + * + * Copyright 2012-2013 STMicroelectronics Inc. + * + * Denis Ciocca + * + * Licensed under the GPL-2. + */ + +#ifndef ST_SENSORS_H +#define ST_SENSORS_H + +#include +#include +#include +#include + +#define ST_SENSORS_TX_MAX_LENGTH 2 +#define ST_SENSORS_RX_MAX_LENGTH 6 + +#define ST_SENSORS_ODR_LIST_MAX 10 +#define ST_SENSORS_FULLSCALE_AVL_MAX 10 + +#define ST_SENSORS_NUMBER_ALL_CHANNELS 4 +#define ST_SENSORS_NUMBER_DATA_CHANNELS 3 +#define ST_SENSORS_ENABLE_ALL_AXIS 0x07 +#define ST_SENSORS_BYTE_FOR_CHANNEL 2 +#define ST_SENSORS_SCAN_X 0 +#define ST_SENSORS_SCAN_Y 1 +#define ST_SENSORS_SCAN_Z 2 +#define ST_SENSORS_DEFAULT_12_REALBITS 12 +#define ST_SENSORS_DEFAULT_16_REALBITS 16 +#define ST_SENSORS_DEFAULT_POWER_ON_VALUE 0x01 +#define ST_SENSORS_DEFAULT_POWER_OFF_VALUE 0x00 +#define ST_SENSORS_DEFAULT_WAI_ADDRESS 0x0f +#define ST_SENSORS_DEFAULT_AXIS_ADDR 0x20 +#define ST_SENSORS_DEFAULT_AXIS_MASK 0x07 +#define ST_SENSORS_DEFAULT_AXIS_N_BIT 3 + +#define ST_SENSORS_MAX_NAME 17 +#define ST_SENSORS_MAX_4WAI 7 + +#define ST_SENSORS_LSM_CHANNELS(device_type, index, mod, endian, bits, addr) \ +{ \ + .type = device_type, \ + .modified = 1, \ + .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \ + IIO_CHAN_INFO_SCALE_SEPARATE_BIT, \ + .scan_index = index, \ + .channel2 = mod, \ + .address = addr, \ + .scan_type = { \ + .sign = 's', \ + .realbits = bits, \ + .shift = 16 - bits, \ + .storagebits = 16, \ + .endianness = endian, \ + }, \ +} + +#define ST_SENSOR_DEV_ATTR_SAMP_FREQ() \ + IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO, \ + st_sensors_sysfs_get_sampling_frequency, \ + st_sensors_sysfs_set_sampling_frequency) + +#define ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL() \ + IIO_DEV_ATTR_SAMP_FREQ_AVAIL( \ + st_sensors_sysfs_sampling_frequency_avail) + +#define ST_SENSORS_DEV_ATTR_SCALE_AVAIL(name) \ + IIO_DEVICE_ATTR(name, S_IRUGO, \ + st_sensors_sysfs_scale_avail, NULL , 0); + +struct st_sensor_odr_avl { + unsigned int hz; + u8 value; +}; + +struct st_sensor_odr { + u8 addr; + u8 mask; + struct st_sensor_odr_avl odr_avl[ST_SENSORS_ODR_LIST_MAX]; +}; + +struct st_sensor_power { + u8 addr; + u8 mask; + u8 value_off; + u8 value_on; +}; + +struct st_sensor_axis { + u8 addr; + u8 mask; +}; + +struct st_sensor_fullscale_avl { + unsigned int num; + u8 value; + unsigned int gain; + unsigned int gain2; +}; + +struct st_sensor_fullscale { + u8 addr; + u8 mask; + struct st_sensor_fullscale_avl fs_avl[ST_SENSORS_FULLSCALE_AVL_MAX]; +}; + +/** + * struct st_sensor_bdu - ST sensor device block data update + * @addr: address of the register. + * @mask: mask to write the block data update flag. + */ +struct st_sensor_bdu { + u8 addr; + u8 mask; +}; + +/** + * struct st_sensor_data_ready_irq - ST sensor device data-ready interrupt + * @addr: address of the register. + * @mask: mask to write the on/off value. + * struct ig1 - represents the Interrupt Generator 1 of sensors. + * @en_addr: address of the enable ig1 register. + * @en_mask: mask to write the on/off value for enable. + */ +struct st_sensor_data_ready_irq { + u8 addr; + u8 mask; + struct { + u8 en_addr; + u8 en_mask; + } ig1; +}; + +/** + * struct st_sensor_transfer_buffer - ST sensor device I/O buffer + * @buf_lock: Mutex to protect rx and tx buffers. + * @tx_buf: Buffer used by SPI transfer function to send data to the sensors. + * This buffer is used to avoid DMA not-aligned issue. + * @rx_buf: Buffer used by SPI transfer to receive data from sensors. + * This buffer is used to avoid DMA not-aligned issue. + */ +struct st_sensor_transfer_buffer { + struct mutex buf_lock; + u8 rx_buf[ST_SENSORS_RX_MAX_LENGTH]; + u8 tx_buf[ST_SENSORS_TX_MAX_LENGTH] ____cacheline_aligned; +}; + +/** + * struct st_sensor_transfer_function - ST sensor device I/O function + * @read_byte: Function used to read one byte. + * @write_byte: Function used to write one byte. + * @read_multiple_byte: Function used to read multiple byte. + */ +struct st_sensor_transfer_function { + int (*read_byte) (struct st_sensor_transfer_buffer *tb, + struct device *dev, u8 reg_addr, u8 *res_byte); + int (*write_byte) (struct st_sensor_transfer_buffer *tb, + struct device *dev, u8 reg_addr, u8 data); + int (*read_multiple_byte) (struct st_sensor_transfer_buffer *tb, + struct device *dev, u8 reg_addr, int len, u8 *data, + bool multiread_bit); +}; + +/** + * struct st_sensors - ST sensors list + * @wai: Contents of WhoAmI register. + * @sensors_supported: List of supported sensors by struct itself. + * @ch: IIO channels for the sensor. + * @odr: Output data rate register and ODR list available. + * @pw: Power register of the sensor. + * @enable_axis: Enable one or more axis of the sensor. + * @fs: Full scale register and full scale list available. + * @bdu: Block data update register. + * @drdy_irq: Data ready register of the sensor. + * @multi_read_bit: Use or not particular bit for [I2C/SPI] multi-read. + * @bootime: samples to discard when sensor passing from power-down to power-up. + */ +struct st_sensors { + u8 wai; + char sensors_supported[ST_SENSORS_MAX_4WAI][ST_SENSORS_MAX_NAME]; + struct iio_chan_spec *ch; + struct st_sensor_odr odr; + struct st_sensor_power pw; + struct st_sensor_axis enable_axis; + struct st_sensor_fullscale fs; + struct st_sensor_bdu bdu; + struct st_sensor_data_ready_irq drdy_irq; + bool multi_read_bit; + unsigned int bootime; +}; + +/** + * struct st_sensor_data - ST sensor device status + * @dev: Pointer to instance of struct device (I2C or SPI). + * @trig: The trigger in use by the core driver. + * @sensor: Pointer to the current sensor struct in use. + * @current_fullscale: Maximum range of measure by the sensor. + * @enabled: Status of the sensor (false->off, true->on). + * @multiread_bit: Use or not particular bit for [I2C/SPI] multiread. + * @buffer_data: Data used by buffer part. + * @odr: Output data rate of the sensor [Hz]. + * @get_irq_data_ready: Function to get the IRQ used for data ready signal. + * @tf: Transfer function structure used by I/O operations. + * @tb: Transfer buffers and mutex used by I/O operations. + */ +struct st_sensor_data { + struct device *dev; + struct iio_trigger *trig; + struct st_sensors *sensor; + struct st_sensor_fullscale_avl *current_fullscale; + + bool enabled; + bool multiread_bit; + + char *buffer_data; + + unsigned int odr; + + unsigned int (*get_irq_data_ready) (struct iio_dev *indio_dev); + + const struct st_sensor_transfer_function *tf; + struct st_sensor_transfer_buffer tb; +}; + +#ifdef CONFIG_IIO_BUFFER +int st_sensors_allocate_trigger(struct iio_dev *indio_dev, + const struct iio_trigger_ops *trigger_ops); + +void st_sensors_deallocate_trigger(struct iio_dev *indio_dev); + +irqreturn_t st_sensors_trigger_handler(int irq, void *p); + +int st_sensors_get_buffer_element(struct iio_dev *indio_dev, u8 *buf); +#endif + +int st_sensors_init_sensor(struct iio_dev *indio_dev); + +int st_sensors_set_enable(struct iio_dev *indio_dev, bool enable); + +int st_sensors_set_axis_enable(struct iio_dev *indio_dev, u8 axis_enable); + +int st_sensors_get_sampling_frequency_avl(struct iio_dev *indio_dev, char *buf); + +int st_sensors_get_scale_avl(struct iio_dev *indio_dev, char *buf); + +int st_sensors_set_odr(struct iio_dev *indio_dev, unsigned int odr); + +int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable); + +int st_sensors_set_fullscale_by_gain(struct iio_dev *indio_dev, int scale); + +int st_sensors_read_info_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *ch, int *val); + +int st_sensors_check_device_support(struct iio_dev *indio_dev, + int num_sensors_list, const struct st_sensors *sensors); + +ssize_t st_sensors_sysfs_get_sampling_frequency(struct device *dev, + struct device_attribute *attr, char *buf); + +ssize_t st_sensors_sysfs_set_sampling_frequency(struct device *dev, + struct device_attribute *attr, const char *buf, size_t size); + +ssize_t st_sensors_sysfs_sampling_frequency_avail(struct device *dev, + struct device_attribute *attr, char *buf); + +ssize_t st_sensors_sysfs_scale_avail(struct device *dev, + struct device_attribute *attr, char *buf); + +#endif /* ST_SENSORS_H */ diff --git a/include/linux/iio/common/st_sensors_i2c.h b/include/linux/iio/common/st_sensors_i2c.h new file mode 100644 index 000000000000..67d845385ae2 --- /dev/null +++ b/include/linux/iio/common/st_sensors_i2c.h @@ -0,0 +1,20 @@ +/* + * STMicroelectronics sensors i2c library driver + * + * Copyright 2012-2013 STMicroelectronics Inc. + * + * Denis Ciocca + * + * Licensed under the GPL-2. + */ + +#ifndef ST_SENSORS_I2C_H +#define ST_SENSORS_I2C_H + +#include +#include + +void st_sensors_i2c_configure(struct iio_dev *indio_dev, + struct i2c_client *client, struct st_sensor_data *sdata); + +#endif /* ST_SENSORS_I2C_H */ diff --git a/include/linux/iio/common/st_sensors_spi.h b/include/linux/iio/common/st_sensors_spi.h new file mode 100644 index 000000000000..d964a3563dc6 --- /dev/null +++ b/include/linux/iio/common/st_sensors_spi.h @@ -0,0 +1,20 @@ +/* + * STMicroelectronics sensors spi library driver + * + * Copyright 2012-2013 STMicroelectronics Inc. + * + * Denis Ciocca + * + * Licensed under the GPL-2. + */ + +#ifndef ST_SENSORS_SPI_H +#define ST_SENSORS_SPI_H + +#include +#include + +void st_sensors_spi_configure(struct iio_dev *indio_dev, + struct spi_device *spi, struct st_sensor_data *sdata); + +#endif /* ST_SENSORS_SPI_H */ -- cgit v1.2.3 From 999517f6742b4ca4692c041752afc4298fbbf0da Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 28 Jan 2013 10:12:00 +0000 Subject: staging:iio: Remove noop call to __iio_update_buffer __iio_update_buffer updates the buffer's bytes_per_datum and length fields. But the only user of this function just passes in these exact fields, so the call basically looks like this: buffer->bytes_per_datum = buffer->bytes_per_datum; buffer->length = buffer->length; Which means it is a noop and can be removed. Also remove the function itself, since it is now unused. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- include/linux/iio/buffer.h | 13 ------------- 1 file changed, 13 deletions(-) (limited to 'include/linux') diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h index f3eea18fdf46..2bac0eb8948d 100644 --- a/include/linux/iio/buffer.h +++ b/include/linux/iio/buffer.h @@ -103,19 +103,6 @@ int iio_update_buffers(struct iio_dev *indio_dev, **/ void iio_buffer_init(struct iio_buffer *buffer); -/** - * __iio_update_buffer() - update common elements of buffers - * @buffer: buffer that is the event source - * @bytes_per_datum: size of individual datum including timestamp - * @length: number of datums in buffer - **/ -static inline void __iio_update_buffer(struct iio_buffer *buffer, - int bytes_per_datum, int length) -{ - buffer->bytes_per_datum = bytes_per_datum; - buffer->length = length; -} - int iio_scan_mask_query(struct iio_dev *indio_dev, struct iio_buffer *buffer, int bit); -- cgit v1.2.3 From 12572dbb53638c6e454ef831c8fee7de3df24389 Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Mon, 14 Jan 2013 17:05:21 +0000 Subject: clockevents: Add generic timer broadcast receiver Currently the broadcast mechanism used for timers is abstracted by a function pointer on struct clock_event_device. As the fundamental mechanism for broadcast is architecture-specific, this ties each clock_event_device driver to a single architecture, even where the driver is otherwise generic. This patch adds a standard path for the receipt of timer broadcasts, so drivers and/or architecture backends need not manage redundant lists of timers for the purpose of routing broadcast timer ticks. [tglx: Made the implementation depend on the config switch as well ] Signed-off-by: Mark Rutland Reviewed-by: Santosh Shilimkar Cc: linux-arm-kernel@lists.infradead.org Cc: nico@linaro.org Cc: Will.Deacon@arm.com Cc: Marc.Zyngier@arm.com Cc: john.stultz@linaro.org Link: http://lkml.kernel.org/r/1358183124-28461-2-git-send-email-mark.rutland@arm.com Tested-by: Santosh Shilimkar Reviewed-by: Stephen Boyd Signed-off-by: Thomas Gleixner --- include/linux/clockchips.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h index 8a7096fcb01e..e1089aa7816d 100644 --- a/include/linux/clockchips.h +++ b/include/linux/clockchips.h @@ -161,6 +161,10 @@ clockevents_calc_mult_shift(struct clock_event_device *ce, u32 freq, u32 minsec) extern void clockevents_suspend(void); extern void clockevents_resume(void); +#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST +extern int tick_receive_broadcast(void); +#endif + #ifdef CONFIG_GENERIC_CLOCKEVENTS extern void clockevents_notify(unsigned long reason, void *arg); #else -- cgit v1.2.3 From 12ad10004645d38356b14d1fbba379c523a61916 Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Mon, 14 Jan 2013 17:05:22 +0000 Subject: clockevents: Add generic timer broadcast function Currently, the timer broadcast mechanism is defined by a function pointer on struct clock_event_device. As the fundamental mechanism for broadcast is architecture-specific, this means that clock_event_device drivers cannot be shared across multiple architectures. This patch adds an (optional) architecture-specific function for timer tick broadcast, allowing drivers which may require broadcast functionality to be shared across multiple architectures. Signed-off-by: Mark Rutland Reviewed-by: Santosh Shilimkar Cc: linux-arm-kernel@lists.infradead.org Cc: nico@linaro.org Cc: Will.Deacon@arm.com Cc: Marc.Zyngier@arm.com Cc: john.stultz@linaro.org Link: http://lkml.kernel.org/r/1358183124-28461-3-git-send-email-mark.rutland@arm.com Tested-by: Santosh Shilimkar Reviewed-by: Stephen Boyd Signed-off-by: Thomas Gleixner --- include/linux/clockchips.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h index e1089aa7816d..66346521cb65 100644 --- a/include/linux/clockchips.h +++ b/include/linux/clockchips.h @@ -162,6 +162,11 @@ extern void clockevents_suspend(void); extern void clockevents_resume(void); #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST +#ifdef CONFIG_ARCH_HAS_TICK_BROADCAST +extern void tick_broadcast(const struct cpumask *mask); +#else +#define tick_broadcast NULL +#endif extern int tick_receive_broadcast(void); #endif -- cgit v1.2.3 From 6fcdf4facb85e7d54ff6195378dd2ba8e0baccc4 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Wed, 30 Jan 2013 21:50:08 -0500 Subject: wanrouter: delete now orphaned header content, files/drivers The wanrouter support was identified earlier as unused for years, and so the previous commit totally decoupled it from the kernel, leaving the related wanrouter files present, but totally inert. Here we take the final step in that cleanup, by doing a wholesale removal of these files. The two step process is used so that the large deletion is decoupled from the git history of files that we still care about. The drivers deleted here all were dependent on the Kconfig setting CONFIG_WAN_ROUTER_DRIVERS. A stub wanrouter.h header (kernel & uapi) are left behind so that drivers/isdn/i4l/isdn_x25iface.c continues to compile, and so that we don't accidentally break userspace that expected these defines. Cc: Joe Perches Cc: Dan Carpenter Cc: Arnaldo Carvalho de Melo Signed-off-by: Paul Gortmaker --- include/linux/cyclomx.h | 77 ---------------------------- include/linux/cycx_drv.h | 64 ----------------------- include/linux/wanrouter.h | 127 ++-------------------------------------------- 3 files changed, 4 insertions(+), 264 deletions(-) delete mode 100644 include/linux/cyclomx.h delete mode 100644 include/linux/cycx_drv.h (limited to 'include/linux') diff --git a/include/linux/cyclomx.h b/include/linux/cyclomx.h deleted file mode 100644 index b88f7f428e58..000000000000 --- a/include/linux/cyclomx.h +++ /dev/null @@ -1,77 +0,0 @@ -#ifndef _CYCLOMX_H -#define _CYCLOMX_H -/* -* cyclomx.h Cyclom 2X WAN Link Driver. -* User-level API definitions. -* -* Author: Arnaldo Carvalho de Melo -* -* Copyright: (c) 1998-2003 Arnaldo Carvalho de Melo -* -* Based on wanpipe.h by Gene Kozin -* -* This program is free software; you can redistribute it and/or -* modify it under the terms of the GNU General Public License -* as published by the Free Software Foundation; either version -* 2 of the License, or (at your option) any later version. -* ============================================================================ -* 2000/07/13 acme remove crap #if KERNEL_VERSION > blah -* 2000/01/21 acme rename cyclomx_open to cyclomx_mod_inc_use_count -* and cyclomx_close to cyclomx_mod_dec_use_count -* 1999/05/19 acme wait_queue_head_t wait_stats(support for 2.3.*) -* 1999/01/03 acme judicious use of data types -* 1998/12/27 acme cleanup: PACKED not needed -* 1998/08/08 acme Version 0.0.1 -*/ - -#include -#include - -#ifdef __KERNEL__ -/* Kernel Interface */ - -#include /* Cyclom 2X support module API definitions */ -#include /* Cyclom 2X firmware module definitions */ -#ifdef CONFIG_CYCLOMX_X25 -#include -#endif - -/* Adapter Data Space. - * This structure is needed because we handle multiple cards, otherwise - * static data would do it. - */ -struct cycx_device { - char devname[WAN_DRVNAME_SZ + 1];/* card name */ - struct cycx_hw hw; /* hardware configuration */ - struct wan_device wandev; /* WAN device data space */ - u32 state_tick; /* link state timestamp */ - spinlock_t lock; - char in_isr; /* interrupt-in-service flag */ - char buff_int_mode_unbusy; /* flag for carrying out dev_tint */ - wait_queue_head_t wait_stats; /* to wait for the STATS indication */ - void __iomem *mbox; /* -> mailbox */ - void (*isr)(struct cycx_device* card); /* interrupt service routine */ - int (*exec)(struct cycx_device* card, void* u_cmd, void* u_data); - union { -#ifdef CONFIG_CYCLOMX_X25 - struct { /* X.25 specific data */ - u32 lo_pvc; - u32 hi_pvc; - u32 lo_svc; - u32 hi_svc; - struct cycx_x25_stats stats; - spinlock_t lock; - u32 connection_keys; - } x; -#endif - } u; -}; - -/* Public Functions */ -void cycx_set_state(struct cycx_device *card, int state); - -#ifdef CONFIG_CYCLOMX_X25 -int cycx_x25_wan_init(struct cycx_device *card, wandev_conf_t *conf); -#endif -#endif /* __KERNEL__ */ -#endif /* _CYCLOMX_H */ diff --git a/include/linux/cycx_drv.h b/include/linux/cycx_drv.h deleted file mode 100644 index 12fe6b0bfcff..000000000000 --- a/include/linux/cycx_drv.h +++ /dev/null @@ -1,64 +0,0 @@ -/* -* cycx_drv.h CYCX Support Module. Kernel API Definitions. -* -* Author: Arnaldo Carvalho de Melo -* -* Copyright: (c) 1998-2003 Arnaldo Carvalho de Melo -* -* Based on sdladrv.h by Gene Kozin -* -* This program is free software; you can redistribute it and/or -* modify it under the terms of the GNU General Public License -* as published by the Free Software Foundation; either version -* 2 of the License, or (at your option) any later version. -* ============================================================================ -* 1999/10/23 acme cycxhw_t cleanup -* 1999/01/03 acme more judicious use of data types... -* uclong, ucchar, etc deleted, the u8, u16, u32 -* types are the portable way to go. -* 1999/01/03 acme judicious use of data types... u16, u32, etc -* 1998/12/26 acme FIXED_BUFFERS, CONF_OFFSET, -* removal of cy_read{bwl} -* 1998/08/08 acme Initial version. -*/ -#ifndef _CYCX_DRV_H -#define _CYCX_DRV_H - -#define CYCX_WINDOWSIZE 0x4000 /* default dual-port memory window size */ -#define GEN_CYCX_INTR 0x02 -#define RST_ENABLE 0x04 -#define START_CPU 0x06 -#define RST_DISABLE 0x08 -#define FIXED_BUFFERS 0x08 -#define TEST_PATTERN 0xaa55 -#define CMD_OFFSET 0x20 -#define CONF_OFFSET 0x0380 -#define RESET_OFFSET 0x3c00 /* For reset file load */ -#define DATA_OFFSET 0x0100 /* For code and data files load */ -#define START_OFFSET 0x3ff0 /* 80186 starts here */ - -/** - * struct cycx_hw - Adapter hardware configuration - * @fwid - firmware ID - * @irq - interrupt request level - * @dpmbase - dual-port memory base - * @dpmsize - dual-port memory size - * @reserved - reserved for future use - */ -struct cycx_hw { - u32 fwid; - int irq; - void __iomem *dpmbase; - u32 dpmsize; - u32 reserved[5]; -}; - -/* Function Prototypes */ -extern int cycx_setup(struct cycx_hw *hw, void *sfm, u32 len, unsigned long base); -extern int cycx_down(struct cycx_hw *hw); -extern int cycx_peek(struct cycx_hw *hw, u32 addr, void *buf, u32 len); -extern int cycx_poke(struct cycx_hw *hw, u32 addr, void *buf, u32 len); -extern int cycx_exec(void __iomem *addr); - -extern void cycx_intr(struct cycx_hw *hw); -#endif /* _CYCX_DRV_H */ diff --git a/include/linux/wanrouter.h b/include/linux/wanrouter.h index cec4b4159767..8198a63cf459 100644 --- a/include/linux/wanrouter.h +++ b/include/linux/wanrouter.h @@ -1,129 +1,10 @@ -/***************************************************************************** -* wanrouter.h Definitions for the WAN Multiprotocol Router Module. -* This module provides API and common services for WAN Link -* Drivers and is completely hardware-independent. -* -* Author: Nenad Corbic -* Gideon Hack -* Additions: Arnaldo Melo -* -* Copyright: (c) 1995-2000 Sangoma Technologies Inc. -* -* This program is free software; you can redistribute it and/or -* modify it under the terms of the GNU General Public License -* as published by the Free Software Foundation; either version -* 2 of the License, or (at your option) any later version. -* ============================================================================ -* Jul 21, 2000 Nenad Corbic Added WAN_FT1_READY State -* Feb 24, 2000 Nenad Corbic Added support for socket based x25api -* Jan 28, 2000 Nenad Corbic Added support for the ASYNC protocol. -* Oct 04, 1999 Nenad Corbic Updated for 2.1.0 release -* Jun 02, 1999 Gideon Hack Added support for the S514 adapter. -* May 23, 1999 Arnaldo Melo Added local_addr to wanif_conf_t -* WAN_DISCONNECTING state added -* Jul 20, 1998 David Fong Added Inverse ARP options to 'wanif_conf_t' -* Jun 12, 1998 David Fong Added Cisco HDLC support. -* Dec 16, 1997 Jaspreet Singh Moved 'enable_IPX' and 'network_number' to -* 'wanif_conf_t' -* Dec 05, 1997 Jaspreet Singh Added 'pap', 'chap' to 'wanif_conf_t' -* Added 'authenticator' to 'wan_ppp_conf_t' -* Nov 06, 1997 Jaspreet Singh Changed Router Driver version to 1.1 from 1.0 -* Oct 20, 1997 Jaspreet Singh Added 'cir','bc','be' and 'mc' to 'wanif_conf_t' -* Added 'enable_IPX' and 'network_number' to -* 'wan_device_t'. Also added defines for -* UDP PACKET TYPE, Interrupt test, critical values -* for RACE conditions. -* Oct 05, 1997 Jaspreet Singh Added 'dlci_num' and 'dlci[100]' to -* 'wan_fr_conf_t' to configure a list of dlci(s) -* for a NODE -* Jul 07, 1997 Jaspreet Singh Added 'ttl' to 'wandev_conf_t' & 'wan_device_t' -* May 29, 1997 Jaspreet Singh Added 'tx_int_enabled' to 'wan_device_t' -* May 21, 1997 Jaspreet Singh Added 'udp_port' to 'wan_device_t' -* Apr 25, 1997 Farhan Thawar Added 'udp_port' to 'wandev_conf_t' -* Jan 16, 1997 Gene Kozin router_devlist made public -* Jan 02, 1997 Gene Kozin Initial version (based on wanpipe.h). -*****************************************************************************/ +/* + * wanrouter.h Legacy declarations kept around until X25 is removed + */ + #ifndef _ROUTER_H #define _ROUTER_H #include -/****** Kernel Interface ****************************************************/ - -#include /* support for device drivers */ -#include /* proc filesystem pragmatics */ -#include /* support for network drivers */ -#include /* Support for SMP Locking */ - -/*---------------------------------------------------------------------------- - * WAN device data space. - */ -struct wan_device { - unsigned magic; /* magic number */ - char* name; /* -> WAN device name (ASCIIZ) */ - void* private; /* -> driver private data */ - unsigned config_id; /* Configuration ID */ - /****** hardware configuration ******/ - unsigned ioport; /* adapter I/O port base #1 */ - char S514_cpu_no[1]; /* PCI CPU Number */ - unsigned char S514_slot_no; /* PCI Slot Number */ - unsigned long maddr; /* dual-port memory address */ - unsigned msize; /* dual-port memory size */ - int irq; /* interrupt request level */ - int dma; /* DMA request level */ - unsigned bps; /* data transfer rate */ - unsigned mtu; /* max physical transmit unit size */ - unsigned udp_port; /* UDP port for management */ - unsigned char ttl; /* Time To Live for UDP security */ - unsigned enable_tx_int; /* Transmit Interrupt enabled or not */ - char interface; /* RS-232/V.35, etc. */ - char clocking; /* external/internal */ - char line_coding; /* NRZ/NRZI/FM0/FM1, etc. */ - char station; /* DTE/DCE, primary/secondary, etc. */ - char connection; /* permanent/switched/on-demand */ - char signalling; /* Signalling RS232 or V35 */ - char read_mode; /* read mode: Polling or interrupt */ - char new_if_cnt; /* Number of interfaces per wanpipe */ - char del_if_cnt; /* Number of times del_if() gets called */ - unsigned char piggyback; /* Piggibacking a port */ - unsigned hw_opt[4]; /* other hardware options */ - /****** status and statistics *******/ - char state; /* device state */ - char api_status; /* device api status */ - struct net_device_stats stats; /* interface statistics */ - unsigned reserved[16]; /* reserved for future use */ - unsigned long critical; /* critical section flag */ - spinlock_t lock; /* Support for SMP Locking */ - - /****** device management methods ***/ - int (*setup) (struct wan_device *wandev, wandev_conf_t *conf); - int (*shutdown) (struct wan_device *wandev); - int (*update) (struct wan_device *wandev); - int (*ioctl) (struct wan_device *wandev, unsigned cmd, - unsigned long arg); - int (*new_if)(struct wan_device *wandev, struct net_device *dev, - wanif_conf_t *conf); - int (*del_if)(struct wan_device *wandev, struct net_device *dev); - /****** maintained by the router ****/ - struct wan_device* next; /* -> next device */ - struct net_device* dev; /* list of network interfaces */ - unsigned ndev; /* number of interfaces */ - struct proc_dir_entry *dent; /* proc filesystem entry */ -}; - -/* Public functions available for device drivers */ -extern int register_wan_device(struct wan_device *wandev); -extern int unregister_wan_device(char *name); - -/* Proc interface functions. These must not be called by the drivers! */ -extern int wanrouter_proc_init(void); -extern void wanrouter_proc_cleanup(void); -extern int wanrouter_proc_add(struct wan_device *wandev); -extern int wanrouter_proc_delete(struct wan_device *wandev); -extern long wanrouter_ioctl(struct file *file, unsigned int cmd, unsigned long arg); - -/* Public Data */ -/* list of registered devices */ -extern struct wan_device *wanrouter_router_devlist; - #endif /* _ROUTER_H */ -- cgit v1.2.3 From e1d7ef1cc472de30995a50ecb9c7aa3361f985f9 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Wed, 30 Jan 2013 10:49:30 -0700 Subject: clocksource: always define CLOCKSOURCE_OF_DECLARE This allows clocksource drivers that support both DT and non-DT to always invoke macro CLOCKSOURCE_OF_DECLARE(), rather than wrapping it in a #ifdef CONFIG_CLKSRC_OF, which simplifies their code. Signed-off-by: Stephen Warren Signed-off-by: Olof Johansson --- include/linux/clocksource.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h index 7944f14ea947..27cfda427dd9 100644 --- a/include/linux/clocksource.h +++ b/include/linux/clocksource.h @@ -339,6 +339,8 @@ extern void clocksource_of_init(void); static const struct of_device_id __clksrc_of_table_##name \ __used __section(__clksrc_of_table) \ = { .compatible = compat, .data = fn }; +#else +#define CLOCKSOURCE_OF_DECLARE(name, compat, fn) #endif #endif /* _LINUX_CLOCKSOURCE_H */ -- cgit v1.2.3 From 1b092092bf0e2e8b7af1c2a03f615b4e60b05d47 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 8 Jan 2013 09:26:49 -0500 Subject: SUNRPC: Pass a pointer to struct rpc_xprt to the connect callback Avoid another RCU dereference by passing the pointer to struct rpc_xprt from the caller. Signed-off-by: Trond Myklebust --- include/linux/sunrpc/xprt.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h index 951cb9b7d02b..7dd598a5c9aa 100644 --- a/include/linux/sunrpc/xprt.h +++ b/include/linux/sunrpc/xprt.h @@ -117,7 +117,7 @@ struct rpc_xprt_ops { void (*alloc_slot)(struct rpc_xprt *xprt, struct rpc_task *task); void (*rpcbind)(struct rpc_task *task); void (*set_port)(struct rpc_xprt *xprt, unsigned short port); - void (*connect)(struct rpc_task *task); + void (*connect)(struct rpc_xprt *xprt, struct rpc_task *task); void * (*buf_alloc)(struct rpc_task *task, size_t size); void (*buf_free)(void *buffer); int (*send_request)(struct rpc_task *task); -- cgit v1.2.3 From 6a24dfb645dbcb05b34d08b991d082bdaa3ff072 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 8 Jan 2013 09:48:15 -0500 Subject: SUNRPC: Pass pointers to struct rpc_xprt to the congestion window Avoid access to task->tk_xprt Signed-off-by: Trond Myklebust --- include/linux/sunrpc/xprt.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h index 7dd598a5c9aa..30834be03011 100644 --- a/include/linux/sunrpc/xprt.h +++ b/include/linux/sunrpc/xprt.h @@ -122,7 +122,7 @@ struct rpc_xprt_ops { void (*buf_free)(void *buffer); int (*send_request)(struct rpc_task *task); void (*set_retrans_timeout)(struct rpc_task *task); - void (*timer)(struct rpc_task *task); + void (*timer)(struct rpc_xprt *xprt, struct rpc_task *task); void (*release_request)(struct rpc_task *task); void (*close)(struct rpc_xprt *xprt); void (*destroy)(struct rpc_xprt *xprt); @@ -313,7 +313,7 @@ void xprt_set_retrans_timeout_rtt(struct rpc_task *task); void xprt_wake_pending_tasks(struct rpc_xprt *xprt, int status); void xprt_wait_for_buffer_space(struct rpc_task *task, rpc_action action); void xprt_write_space(struct rpc_xprt *xprt); -void xprt_adjust_cwnd(struct rpc_task *task, int result); +void xprt_adjust_cwnd(struct rpc_xprt *xprt, struct rpc_task *task, int result); struct rpc_rqst * xprt_lookup_rqst(struct rpc_xprt *xprt, __be32 xid); void xprt_complete_rqst(struct rpc_task *task, int copied); void xprt_release_rqst_cong(struct rpc_task *task); -- cgit v1.2.3 From 77102893ae685270c1774fa8b7eead6ad93c838d Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 8 Jan 2013 10:10:04 -0500 Subject: SUNRPC: Nuke the tk_xprt macro It is no longer in use Signed-off-by: Trond Myklebust --- include/linux/sunrpc/sched.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h index b64f8eb0b973..84ca436b76c2 100644 --- a/include/linux/sunrpc/sched.h +++ b/include/linux/sunrpc/sched.h @@ -87,7 +87,6 @@ struct rpc_task { tk_cred_retry : 2, tk_rebind_retry : 2; }; -#define tk_xprt tk_client->cl_xprt /* support walking a list of tasks on a wait queue */ #define task_for_each(task, pos, head) \ -- cgit v1.2.3 From 97cc019ee56d52005ea4544af17bef268c464862 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Fri, 1 Feb 2013 08:46:56 +0100 Subject: bcma: cc: fix (and rename) define of NAND flash type MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Rafał Miłecki Signed-off-by: John W. Linville --- include/linux/bcma/bcma_driver_chipcommon.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h index 9a0e3fa3ca95..6a299f416288 100644 --- a/include/linux/bcma/bcma_driver_chipcommon.h +++ b/include/linux/bcma/bcma_driver_chipcommon.h @@ -27,7 +27,7 @@ #define BCMA_CC_FLASHT_NONE 0x00000000 /* No flash */ #define BCMA_CC_FLASHT_STSER 0x00000100 /* ST serial flash */ #define BCMA_CC_FLASHT_ATSER 0x00000200 /* Atmel serial flash */ -#define BCMA_CC_FLASHT_NFLASH 0x00000200 /* NAND flash */ +#define BCMA_CC_FLASHT_NAND 0x00000300 /* NAND flash */ #define BCMA_CC_FLASHT_PARA 0x00000700 /* Parallel flash */ #define BCMA_CC_CAP_PLLT 0x00038000 /* PLL Type */ #define BCMA_PLLTYPE_NONE 0x00000000 -- cgit v1.2.3 From dc75eb36c3233409728e88acfd6b45a223856289 Mon Sep 17 00:00:00 2001 From: Ezequiel Garcia Date: Fri, 25 Jan 2013 09:23:09 -0300 Subject: mtd: omap-onenand: pass device_node in platform data Pass an optional device_node pointer in the platform data, which in turn will be put into a mtd_part_parser_data. This way, code that sets up the platform devices can pass along the node from DT so that the partitions can be parsed. For non-DT boards, this change has no effect. Acked-by: Artem Bityutskiy Signed-off-by: Ezequiel Garcia Signed-off-by: Tony Lindgren --- include/linux/platform_data/mtd-onenand-omap2.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/mtd-onenand-omap2.h b/include/linux/platform_data/mtd-onenand-omap2.h index 685af7e8b120..e9a9fb188f97 100644 --- a/include/linux/platform_data/mtd-onenand-omap2.h +++ b/include/linux/platform_data/mtd-onenand-omap2.h @@ -29,5 +29,8 @@ struct omap_onenand_platform_data { u8 flags; u8 regulator_can_sleep; u8 skip_initial_unlocking; + + /* for passing the partitions */ + struct device_node *of_node; }; #endif -- cgit v1.2.3 From b8eed8af94f9203e0cc39245ea335f4b8dc1ed31 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Mon, 14 Jan 2013 13:23:03 +0000 Subject: cpufreq: Simplify __cpufreq_remove_dev() __cpufreq_remove_dev() is called on multiple occasions: cpufreq_driver unregister and cpu removals. Current implementation of this routine is overly complex without much need. If the cpu to be removed is the policy->cpu, we remove the policy first and add all other cpus again from policy->cpus and then finally call __cpufreq_remove_dev() again to remove the cpu to be deleted. Haahhhh.. There exist a simple solution to removal of a cpu: - Simply use the old policy structure - update its fields like: policy->cpu, etc. - notify any users of cpufreq, which depend on changing policy->cpu Hence this patch, which tries to implement the above theory. It is tested well by myself on ARM big.LITTLE TC2 SoC, which has 5 cores (2 A15 and 3 A7). Both A15's share same struct policy and all A7's share same policy structure. Signed-off-by: Viresh Kumar Tested-by: Shawn Guo Signed-off-by: Rafael J. Wysocki --- include/linux/cpufreq.h | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index a55b88eaf96a..52be2d0c994a 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -93,7 +93,9 @@ struct cpufreq_policy { cpumask_var_t related_cpus; /* CPUs with any coordination */ unsigned int shared_type; /* ANY or ALL affected CPUs should set cpufreq */ - unsigned int cpu; /* cpu nr of registered CPU */ + unsigned int cpu; /* cpu nr of CPU managing this policy */ + unsigned int last_cpu; /* cpu nr of previous CPU that managed + * this policy */ struct cpufreq_cpuinfo cpuinfo;/* see above */ unsigned int min; /* in kHz */ @@ -112,10 +114,11 @@ struct cpufreq_policy { struct completion kobj_unregister; }; -#define CPUFREQ_ADJUST (0) -#define CPUFREQ_INCOMPATIBLE (1) -#define CPUFREQ_NOTIFY (2) -#define CPUFREQ_START (3) +#define CPUFREQ_ADJUST (0) +#define CPUFREQ_INCOMPATIBLE (1) +#define CPUFREQ_NOTIFY (2) +#define CPUFREQ_START (3) +#define CPUFREQ_UPDATE_POLICY_CPU (4) #define CPUFREQ_SHARED_TYPE_NONE (0) /* None */ #define CPUFREQ_SHARED_TYPE_HW (1) /* HW does needed coordination */ @@ -405,6 +408,7 @@ extern struct freq_attr cpufreq_freq_attr_scaling_available_freqs; void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table, unsigned int cpu); +void cpufreq_frequency_table_update_policy_cpu(struct cpufreq_policy *policy); void cpufreq_frequency_table_put_attr(unsigned int cpu); #endif /* _LINUX_CPUFREQ_H */ -- cgit v1.2.3 From 9d95046e5d6afd6d7ae86fb71ab59c6faf0db8de Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Sun, 20 Jan 2013 10:24:28 +0000 Subject: cpufreq: Add a get_current_driver helper Add a helper function to return cpufreq_driver->name. Signed-off-by: Borislav Petkov Signed-off-by: Rafael J. Wysocki --- include/linux/cpufreq.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 52be2d0c994a..1f3a726640e8 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -411,4 +411,5 @@ void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table, void cpufreq_frequency_table_update_policy_cpu(struct cpufreq_policy *policy); void cpufreq_frequency_table_put_attr(unsigned int cpu); +const char *cpufreq_get_current_driver(void); #endif /* _LINUX_CPUFREQ_H */ -- cgit v1.2.3 From ab45bd9bed36ad6c471b090bb8846ab7228fdf11 Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Mon, 28 Jan 2013 14:50:39 +0100 Subject: cpufreq: Sort function prototypes properly Move function prototypes to a place where they logically fit better. Signed-off-by: Borislav Petkov Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- include/linux/cpufreq.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 1f3a726640e8..5fdc6c6e3f8a 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -311,6 +311,9 @@ __ATTR(_name, 0444, show_##_name, NULL) static struct global_attr _name = \ __ATTR(_name, 0644, show_##_name, store_##_name) +struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu); +void cpufreq_cpu_put(struct cpufreq_policy *data); +const char *cpufreq_get_current_driver(void); /********************************************************************* * CPUFREQ 2.6. INTERFACE * @@ -400,8 +403,6 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy, /* the following 3 funtions are for cpufreq core use only */ struct cpufreq_frequency_table *cpufreq_frequency_get_table(unsigned int cpu); -struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu); -void cpufreq_cpu_put(struct cpufreq_policy *data); /* the following are really really optional */ extern struct freq_attr cpufreq_freq_attr_scaling_available_freqs; @@ -411,5 +412,4 @@ void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table, void cpufreq_frequency_table_update_policy_cpu(struct cpufreq_policy *policy); void cpufreq_frequency_table_put_attr(unsigned int cpu); -const char *cpufreq_get_current_driver(void); #endif /* _LINUX_CPUFREQ_H */ -- cgit v1.2.3 From 300586778d405f0a4d1f6dc51fcfb4fed567d020 Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Mon, 28 Jan 2013 16:13:14 +0000 Subject: ARM / highbank: add support for pl320 IPC The pl320 IPC allows for interprocessor communication between the highbank A9 and the EnergyCore Management Engine. The pl320 implements a straightforward mailbox protocol. Signed-off-by: Mark Langsdorf Signed-off-by: Rob Herring Signed-off-by: Rafael J. Wysocki --- include/linux/mailbox.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 include/linux/mailbox.h (limited to 'include/linux') diff --git a/include/linux/mailbox.h b/include/linux/mailbox.h new file mode 100644 index 000000000000..5161f63ec1c8 --- /dev/null +++ b/include/linux/mailbox.h @@ -0,0 +1,17 @@ +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . + */ + +int pl320_ipc_transmit(u32 *data); +int pl320_ipc_register_notifier(struct notifier_block *nb); +int pl320_ipc_unregister_notifier(struct notifier_block *nb); -- cgit v1.2.3 From 951fc5f45836988c7df1d05c7f4658f331e7a920 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Thu, 31 Jan 2013 02:03:53 +0000 Subject: cpufreq: Update Documentation for cpus and related_cpus Documentation related to cpus and related_cpus is confusing and not very clear. Over that CPUFreq core has seen much changes recently. Lets update documentation and comments for cpus and related_cpus. Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- include/linux/cpufreq.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 5fdc6c6e3f8a..753b198750cf 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -89,8 +89,10 @@ struct cpufreq_real_policy { }; struct cpufreq_policy { - cpumask_var_t cpus; /* CPUs requiring sw coordination */ - cpumask_var_t related_cpus; /* CPUs with any coordination */ + /* CPUs sharing clock, require sw coordination */ + cpumask_var_t cpus; /* Online CPUs only */ + cpumask_var_t related_cpus; /* Online + Offline CPUs */ + unsigned int shared_type; /* ANY or ALL affected CPUs should set cpufreq */ unsigned int cpu; /* cpu nr of CPU managing this policy */ -- cgit v1.2.3 From 2624f90c16413990ecb0414400174a066319a9f5 Mon Sep 17 00:00:00 2001 From: Fabio Baltieri Date: Thu, 31 Jan 2013 09:44:40 +0000 Subject: cpufreq: governors: implement generic policy_is_shared Implement a generic helper function policy_is_shared() to replace the current dbs_sw_coordinated_cpus() at cpufreq level, so that it can be used by code other than cpufreq governors. Suggested-by: Viresh Kumar Signed-off-by: Fabio Baltieri Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- include/linux/cpufreq.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 753b198750cf..feb360c8aa88 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -127,6 +127,11 @@ struct cpufreq_policy { #define CPUFREQ_SHARED_TYPE_ALL (2) /* All dependent CPUs should set freq */ #define CPUFREQ_SHARED_TYPE_ANY (3) /* Freq can be set from any dependent CPU*/ +static inline bool policy_is_shared(struct cpufreq_policy *policy) +{ + return cpumask_weight(policy->cpus) > 1; +} + /******************** cpufreq transition notifiers *******************/ #define CPUFREQ_PRECHANGE (0) -- cgit v1.2.3 From b394058f064848deac7a7cd6942b6521d7b3fe1d Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Fri, 1 Feb 2013 05:42:58 +0000 Subject: cpufreq: governors: Reset tunables only for cpufreq_unregister_governor() Currently, whenever governor->governor() is called for CPUFRREQ_GOV_START event we reset few tunables of governor. Which isn't correct, as this routine is called for every cpu hot-[un]plugging event. We should actually be resetting these only when the governor module is removed and re-installed. Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- include/linux/cpufreq.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index feb360c8aa88..6bf3f2d12c90 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -183,6 +183,7 @@ static inline unsigned long cpufreq_scale(unsigned long old, u_int div, u_int mu struct cpufreq_governor { char name[CPUFREQ_NAME_LEN]; + int initialized; int (*governor) (struct cpufreq_policy *policy, unsigned int event); ssize_t (*show_setspeed) (struct cpufreq_policy *policy, -- cgit v1.2.3 From 62b36cc1c83aca1cd252772e82cbc5d9ef8ff25b Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Fri, 1 Feb 2013 06:40:02 +0000 Subject: cpufreq: Remove unnecessary use of policy->shared_type policy->shared_type field was added only for SoCs with ACPI support: commit 3b2d99429e3386b6e2ac949fc72486509c8bbe36 Author: Venkatesh Pallipadi Date: Wed Dec 14 15:05:00 2005 -0500 P-state software coordination for ACPI core http://bugzilla.kernel.org/show_bug.cgi?id=5737 Many non-ACPI systems are filling this field by mistake, which makes its usage confusing. Lets clean it. Signed-off-by: Viresh Kumar Acked-by: Santosh Shilimkar Signed-off-by: Rafael J. Wysocki --- include/linux/cpufreq.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 6bf3f2d12c90..a22944ca0526 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -93,7 +93,7 @@ struct cpufreq_policy { cpumask_var_t cpus; /* Online CPUs only */ cpumask_var_t related_cpus; /* Online + Offline CPUs */ - unsigned int shared_type; /* ANY or ALL affected CPUs + unsigned int shared_type; /* ACPI: ANY or ALL affected CPUs should set cpufreq */ unsigned int cpu; /* cpu nr of CPU managing this policy */ unsigned int last_cpu; /* cpu nr of previous CPU that managed @@ -122,6 +122,7 @@ struct cpufreq_policy { #define CPUFREQ_START (3) #define CPUFREQ_UPDATE_POLICY_CPU (4) +/* Only for ACPI */ #define CPUFREQ_SHARED_TYPE_NONE (0) /* None */ #define CPUFREQ_SHARED_TYPE_HW (1) /* HW does needed coordination */ #define CPUFREQ_SHARED_TYPE_ALL (2) /* All dependent CPUs should set freq */ -- cgit v1.2.3 From 9ea6cdac9ba5fbc65adde4dc6a3cbee1206508df Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Fri, 21 Dec 2012 01:43:55 -0800 Subject: leds: leds-pwm: Convert to use devm_get_pwm Update the driver to use the new API for requesting pwm so we can take advantage of the pwm_lookup table to find the correct pwm to be used for the LED functionality. Signed-off-by: Peter Ujfalusi Signed-off-by: Bryan Wu --- include/linux/leds_pwm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/leds_pwm.h b/include/linux/leds_pwm.h index 33a071167489..a65e9646e4b1 100644 --- a/include/linux/leds_pwm.h +++ b/include/linux/leds_pwm.h @@ -7,7 +7,7 @@ struct led_pwm { const char *name; const char *default_trigger; - unsigned pwm_id; + unsigned pwm_id __deprecated; u8 active_low; unsigned max_brightness; unsigned pwm_period_ns; -- cgit v1.2.3 From d4c0c4705bef1134339b038872ece3705a2783e0 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Fri, 21 Dec 2012 01:43:57 -0800 Subject: pwm: Correct parameter name in header for *pwm_get() functions To synchronize the header file definition and the actual code. In the code the consumer parameter is named as con_id, change the header file and replace consumer -> con_id in the parameter list. Signed-off-by: Peter Ujfalusi Ackedy-by: Thierry Reding Signed-off-by: Bryan Wu --- include/linux/pwm.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pwm.h b/include/linux/pwm.h index 6d661f32e0e4..cc908a5396f8 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -174,10 +174,10 @@ struct pwm_device *pwm_request_from_chip(struct pwm_chip *chip, struct pwm_device *of_pwm_xlate_with_flags(struct pwm_chip *pc, const struct of_phandle_args *args); -struct pwm_device *pwm_get(struct device *dev, const char *consumer); +struct pwm_device *pwm_get(struct device *dev, const char *con_id); void pwm_put(struct pwm_device *pwm); -struct pwm_device *devm_pwm_get(struct device *dev, const char *consumer); +struct pwm_device *devm_pwm_get(struct device *dev, const char *con_id); void devm_pwm_put(struct device *dev, struct pwm_device *pwm); #else static inline int pwm_set_chip_data(struct pwm_device *pwm, void *data) -- cgit v1.2.3 From 8eb9612799605a7988d1c97cdc5980a5b8f04c56 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Fri, 21 Dec 2012 01:43:58 -0800 Subject: pwm: core: Rename of_pwm_request() to of_pwm_get() and export it Allow client driver to use of_pwm_get() to get the PWM they need. This is needed for drivers which handle more than one PWM separately, like leds-pwm driver, which have: pwmleds { compatible = "pwm-leds"; kpad { label = "omap4::keypad"; pwms = <&twl_pwm 0 7812500>; max-brightness = <127>; }; charging { label = "omap4:green:chrg"; pwms = <&twl_pwmled 0 7812500>; max-brightness = <255>; }; }; in the dts files. Signed-off-by: Peter Ujfalusi Acked-by: Thierry Reding Signed-off-by: Bryan Wu --- include/linux/pwm.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pwm.h b/include/linux/pwm.h index cc908a5396f8..76a1959f2b23 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -175,6 +175,7 @@ struct pwm_device *of_pwm_xlate_with_flags(struct pwm_chip *pc, const struct of_phandle_args *args); struct pwm_device *pwm_get(struct device *dev, const char *con_id); +struct pwm_device *of_pwm_get(struct device_node *np, const char *con_id); void pwm_put(struct pwm_device *pwm); struct pwm_device *devm_pwm_get(struct device *dev, const char *con_id); @@ -213,6 +214,12 @@ static inline struct pwm_device *pwm_get(struct device *dev, return ERR_PTR(-ENODEV); } +static inline struct pwm_device *of_pwm_get(struct device_node *np, + const char *con_id) +{ + return ERR_PTR(-ENODEV); +} + static inline void pwm_put(struct pwm_device *pwm) { } -- cgit v1.2.3 From 261a5edd3ac77ecb4b33310a1dd1ed8d656f0569 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Fri, 21 Dec 2012 01:43:59 -0800 Subject: pwm: Add devm_of_pwm_get() as exported API for users When booted with DT users can use devm version of of_pwm_get() to benefit from automatic resource release. Signed-off-by: Peter Ujfalusi Acked-by: Thierry Reding Signed-off-by: Bryan Wu --- include/linux/pwm.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pwm.h b/include/linux/pwm.h index 76a1959f2b23..70655a205b74 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -179,6 +179,8 @@ struct pwm_device *of_pwm_get(struct device_node *np, const char *con_id); void pwm_put(struct pwm_device *pwm); struct pwm_device *devm_pwm_get(struct device *dev, const char *con_id); +struct pwm_device *devm_of_pwm_get(struct device *dev, struct device_node *np, + const char *con_id); void devm_pwm_put(struct device *dev, struct pwm_device *pwm); #else static inline int pwm_set_chip_data(struct pwm_device *pwm, void *data) @@ -230,6 +232,13 @@ static inline struct pwm_device *devm_pwm_get(struct device *dev, return ERR_PTR(-ENODEV); } +static inline struct pwm_device *devm_of_pwm_get(struct device *dev, + struct device_node *np, + const char *con_id) +{ + return ERR_PTR(-ENODEV); +} + static inline void devm_pwm_put(struct device *dev, struct pwm_device *pwm) { } -- cgit v1.2.3 From 9dbf091da080508e9f632d307f357beb79a0766b Mon Sep 17 00:00:00 2001 From: Manuel Stahl Date: Fri, 1 Feb 2013 08:51:00 +0000 Subject: iio: gyro: Add itg3200 This patch adds support for the InvenSense itg3200. The itg3200 is a three-axis gyro with 16-bit ADC and I2C interface. Signed-off-by: Manuel Stahl Reviewed-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- include/linux/iio/gyro/itg3200.h | 154 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 154 insertions(+) create mode 100644 include/linux/iio/gyro/itg3200.h (limited to 'include/linux') diff --git a/include/linux/iio/gyro/itg3200.h b/include/linux/iio/gyro/itg3200.h new file mode 100644 index 000000000000..c53f16914b77 --- /dev/null +++ b/include/linux/iio/gyro/itg3200.h @@ -0,0 +1,154 @@ +/* + * itg3200.h -- support InvenSense ITG3200 + * Digital 3-Axis Gyroscope driver + * + * Copyright (c) 2011 Christian Strobel + * Copyright (c) 2011 Manuel Stahl + * Copyright (c) 2012 Thorsten Nowak + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef I2C_ITG3200_H_ +#define I2C_ITG3200_H_ + +#include + +/* Register with I2C address (34h) */ +#define ITG3200_REG_ADDRESS 0x00 + +/* Sample rate divider + * Range: 0 to 255 + * Default value: 0x00 */ +#define ITG3200_REG_SAMPLE_RATE_DIV 0x15 + +/* Digital low pass filter settings */ +#define ITG3200_REG_DLPF 0x16 +/* DLPF full scale range */ +#define ITG3200_DLPF_FS_SEL_2000 0x18 +/* Bandwidth (Hz) and internal sample rate + * (kHz) of DLPF */ +#define ITG3200_DLPF_256_8 0x00 +#define ITG3200_DLPF_188_1 0x01 +#define ITG3200_DLPF_98_1 0x02 +#define ITG3200_DLPF_42_1 0x03 +#define ITG3200_DLPF_20_1 0x04 +#define ITG3200_DLPF_10_1 0x05 +#define ITG3200_DLPF_5_1 0x06 + +#define ITG3200_DLPF_CFG_MASK 0x07 + +/* Configuration for interrupt operations */ +#define ITG3200_REG_IRQ_CONFIG 0x17 +/* Logic level */ +#define ITG3200_IRQ_ACTIVE_LOW 0x80 +#define ITG3200_IRQ_ACTIVE_HIGH 0x00 +/* Drive type */ +#define ITG3200_IRQ_OPEN_DRAIN 0x40 +#define ITG3200_IRQ_PUSH_PULL 0x00 +/* Latch mode */ +#define ITG3200_IRQ_LATCH_UNTIL_CLEARED 0x20 +#define ITG3200_IRQ_LATCH_50US_PULSE 0x00 +/* Latch clear method */ +#define ITG3200_IRQ_LATCH_CLEAR_ANY 0x10 +#define ITG3200_IRQ_LATCH_CLEAR_STATUS 0x00 +/* Enable interrupt when device is ready */ +#define ITG3200_IRQ_DEVICE_RDY_ENABLE 0x04 +/* Enable interrupt when data is available */ +#define ITG3200_IRQ_DATA_RDY_ENABLE 0x01 + +/* Determine the status of ITG-3200 interrupts */ +#define ITG3200_REG_IRQ_STATUS 0x1A +/* Status of 'device is ready'-interrupt */ +#define ITG3200_IRQ_DEVICE_RDY_STATUS 0x04 +/* Status of 'data is available'-interrupt */ +#define ITG3200_IRQ_DATA_RDY_STATUS 0x01 + +/* Sensor registers */ +#define ITG3200_REG_TEMP_OUT_H 0x1B +#define ITG3200_REG_TEMP_OUT_L 0x1C +#define ITG3200_REG_GYRO_XOUT_H 0x1D +#define ITG3200_REG_GYRO_XOUT_L 0x1E +#define ITG3200_REG_GYRO_YOUT_H 0x1F +#define ITG3200_REG_GYRO_YOUT_L 0x20 +#define ITG3200_REG_GYRO_ZOUT_H 0x21 +#define ITG3200_REG_GYRO_ZOUT_L 0x22 + +/* Power management */ +#define ITG3200_REG_POWER_MANAGEMENT 0x3E +/* Reset device and internal registers to the + * power-up-default settings */ +#define ITG3200_RESET 0x80 +/* Enable low power sleep mode */ +#define ITG3200_SLEEP 0x40 +/* Put according gyroscope in standby mode */ +#define ITG3200_STANDBY_GYRO_X 0x20 +#define ITG3200_STANDBY_GYRO_Y 0x10 +#define ITG3200_STANDBY_GYRO_Z 0x08 +/* Determine the device clock source */ +#define ITG3200_CLK_INTERNAL 0x00 +#define ITG3200_CLK_GYRO_X 0x01 +#define ITG3200_CLK_GYRO_Y 0x02 +#define ITG3200_CLK_GYRO_Z 0x03 +#define ITG3200_CLK_EXT_32K 0x04 +#define ITG3200_CLK_EXT_19M 0x05 + + +/** + * struct itg3200 - device instance specific data + * @i2c: actual i2c_client + * @trig: data ready trigger from itg3200 pin + **/ +struct itg3200 { + struct i2c_client *i2c; + struct iio_trigger *trig; +}; + +enum ITG3200_SCAN_INDEX { + ITG3200_SCAN_TEMP, + ITG3200_SCAN_GYRO_X, + ITG3200_SCAN_GYRO_Y, + ITG3200_SCAN_GYRO_Z, + ITG3200_SCAN_ELEMENTS, +}; + +int itg3200_write_reg_8(struct iio_dev *indio_dev, + u8 reg_address, u8 val); + +int itg3200_read_reg_8(struct iio_dev *indio_dev, + u8 reg_address, u8 *val); + + +#ifdef CONFIG_IIO_BUFFER + +void itg3200_remove_trigger(struct iio_dev *indio_dev); +int itg3200_probe_trigger(struct iio_dev *indio_dev); + +int itg3200_buffer_configure(struct iio_dev *indio_dev); +void itg3200_buffer_unconfigure(struct iio_dev *indio_dev); + +#else /* CONFIG_IIO_BUFFER */ + +static inline void itg3200_remove_trigger(struct iio_dev *indio_dev) +{ +} + +static inline int itg3200_probe_trigger(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline int itg3200_buffer_configure(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline void itg3200_buffer_unconfigure(struct iio_dev *indio_dev) +{ +} + +#endif /* CONFIG_IIO_RING_BUFFER */ + +#endif /* ITG3200_H_ */ -- cgit v1.2.3 From 4d2e4fc224d0d5e56fdb0baa7cd135d1557b0a25 Mon Sep 17 00:00:00 2001 From: Denis CIOCCA Date: Wed, 30 Jan 2013 09:15:00 +0000 Subject: iio:common: removed unused functions outside st_sensors library This patch remove st_sensors_get_sampling_frequency_avl and st_sensors_get_scale_avl functions used only in st_sensors_sysfs_sampling_frequency_avail and st_sensors_sysfs_scale_avail sysfs functions. Signed-off-by: Denis Ciocca Signed-off-by: Jonathan Cameron --- include/linux/iio/common/st_sensors.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/iio/common/st_sensors.h b/include/linux/iio/common/st_sensors.h index 3cc85715491f..c40fdf537f69 100644 --- a/include/linux/iio/common/st_sensors.h +++ b/include/linux/iio/common/st_sensors.h @@ -243,10 +243,6 @@ int st_sensors_set_enable(struct iio_dev *indio_dev, bool enable); int st_sensors_set_axis_enable(struct iio_dev *indio_dev, u8 axis_enable); -int st_sensors_get_sampling_frequency_avl(struct iio_dev *indio_dev, char *buf); - -int st_sensors_get_scale_avl(struct iio_dev *indio_dev, char *buf); - int st_sensors_set_odr(struct iio_dev *indio_dev, unsigned int odr); int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable); -- cgit v1.2.3 From ca7d98dbd7db6aa8bc4b08e26be1249436d21af3 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Thu, 31 Jan 2013 21:43:00 +0000 Subject: iio: Update iio_channel_get_all and iio_channel_get_all_cb API Pass device pointer instead of device name as parameter to iio_channel_get_all and iio_channel_get_all_cb. This will enable us to use OF information to retrieve consumer channel information. Signed-off-by: Guenter Roeck Signed-off-by: Jonathan Cameron --- include/linux/iio/consumer.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h index 16c35ac045bd..a85787ac66ab 100644 --- a/include/linux/iio/consumer.h +++ b/include/linux/iio/consumer.h @@ -15,6 +15,7 @@ struct iio_dev; struct iio_chan_spec; +struct device; /** * struct iio_channel - everything needed for a consumer to use a channel @@ -48,14 +49,14 @@ void iio_channel_release(struct iio_channel *chan); /** * iio_channel_get_all() - get all channels associated with a client - * @name: name of consumer device. + * @dev: Pointer to consumer device. * * Returns an array of iio_channel structures terminated with one with * null iio_dev pointer. * This function is used by fairly generic consumers to get all the * channels registered as having this consumer. */ -struct iio_channel *iio_channel_get_all(const char *name); +struct iio_channel *iio_channel_get_all(struct device *dev); /** * iio_channel_release_all() - reverse iio_channel_get_all @@ -66,7 +67,7 @@ void iio_channel_release_all(struct iio_channel *chan); struct iio_cb_buffer; /** * iio_channel_get_all_cb() - register callback for triggered capture - * @name: Name of client device. + * @dev: Pointer to client device. * @cb: Callback function. * @private: Private data passed to callback. * @@ -74,7 +75,7 @@ struct iio_cb_buffer; * So if the channels requested come from different devices this will * fail. */ -struct iio_cb_buffer *iio_channel_get_all_cb(const char *name, +struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev, int (*cb)(u8 *data, void *private), void *private); -- cgit v1.2.3 From 6cb2afd7c0abb93bd9dc6d36b858b1e312e2407d Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Thu, 31 Jan 2013 21:43:00 +0000 Subject: iio: Simplify iio_map_array_unregister API Instead of requiring the map to unregister, simply unregister all map entries associated with the given iio device. This simplifies map removal and also works for maps generated through devicetree. Signed-off-by: Guenter Roeck Signed-off-by: Jonathan Cameron --- include/linux/iio/driver.h | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/iio/driver.h b/include/linux/iio/driver.h index a4f8b2e05af5..7dfb10ee2669 100644 --- a/include/linux/iio/driver.h +++ b/include/linux/iio/driver.h @@ -22,13 +22,10 @@ int iio_map_array_register(struct iio_dev *indio_dev, struct iio_map *map); /** - * iio_map_array_unregister() - tell the core to remove consumer mappings + * iio_map_array_unregister() - tell the core to remove consumer mappings for + * the given provider device * @indio_dev: provider device - * @map: array of mappings to remove. Note these must have same memory - * addresses as those originally added not just equal parameter - * values. */ -int iio_map_array_unregister(struct iio_dev *indio_dev, - struct iio_map *map); +int iio_map_array_unregister(struct iio_dev *indio_dev); #endif -- cgit v1.2.3 From cfad1ba87150e198be9ea32367a24e500e59de2c Mon Sep 17 00:00:00 2001 From: Eric Lapuyade Date: Tue, 18 Dec 2012 14:53:53 +0100 Subject: NFC: Initial support for Inside Secure microread Inside Secure microread is an HCI based NFC chipset. This initial support includes reader and p2p (Target and initiator) modes. Signed-off-by: Eric Lapuyade Signed-off-by: Samuel Ortiz --- include/linux/platform_data/microread.h | 35 +++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 include/linux/platform_data/microread.h (limited to 'include/linux') diff --git a/include/linux/platform_data/microread.h b/include/linux/platform_data/microread.h new file mode 100644 index 000000000000..cfda59b226ee --- /dev/null +++ b/include/linux/platform_data/microread.h @@ -0,0 +1,35 @@ +/* + * Driver include for the PN544 NFC chip. + * + * Copyright (C) 2011 Tieto Poland + * Copyright (C) 2012 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef _MICROREAD_H +#define _MICROREAD_H + +#include + +#define MICROREAD_DRIVER_NAME "microread" + +/* board config platform data for microread */ +struct microread_nfc_platform_data { + unsigned int rst_gpio; + unsigned int irq_gpio; + unsigned int ioh_gpio; +}; + +#endif /* _MICROREAD_H */ -- cgit v1.2.3 From eaca6eae3e0c41d41fcb9d1d70e00934988dff2e Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 25 Nov 2012 23:12:10 -0500 Subject: sanitize rt_sigaction() situation a bit Switch from __ARCH_WANT_SYS_RT_SIGACTION to opposite (!CONFIG_ODD_RT_SIGACTION); the only two architectures that need it are alpha and sparc. The reason for use of CONFIG_... instead of __ARCH_... is that it's needed only kernel-side and doing it that way avoids a mess with include order on many architectures. Signed-off-by: Al Viro --- include/linux/syscalls.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 45e2db270255..75defcd1c276 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -377,6 +377,12 @@ asmlinkage long sys_init_module(void __user *umod, unsigned long len, asmlinkage long sys_delete_module(const char __user *name_user, unsigned int flags); +#ifndef CONFIG_ODD_RT_SIGACTION +asmlinkage long sys_rt_sigaction(int, + const struct sigaction __user *, + struct sigaction __user *, + size_t); +#endif asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set, sigset_t __user *oset, size_t sigsetsize); asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize); -- cgit v1.2.3 From 322a56cb1fcbe228eee5cdb8a9c6df9f797d998c Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 25 Dec 2012 13:32:58 -0500 Subject: generic compat_sys_rt_sigprocmask() conditional on GENERIC_COMPAT_RT_SIGPROCMASK; by the end of that series it will become the same thing as COMPAT and conditional will die out. Signed-off-by: Al Viro --- include/linux/compat.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/compat.h b/include/linux/compat.h index dec7e2d18875..9d3c2a98d537 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -401,7 +401,8 @@ asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp); extern int compat_printk(const char *fmt, ...); -extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat); +extern void sigset_from_compat(sigset_t *set, const compat_sigset_t *compat); +extern void sigset_to_compat(compat_sigset_t *compat, const sigset_t *set); asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes, @@ -592,6 +593,11 @@ asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese, struct compat_timespec __user *uts, compat_size_t sigsetsize); asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, compat_size_t sigsetsize); +#ifdef CONFIG_GENERIC_COMPAT_RT_SIGPROCMASK +asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set, + compat_sigset_t __user *oset, + compat_size_t sigsetsize); +#endif asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info); asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg); -- cgit v1.2.3 From fe9c1db2cfc363cd30ecfe6480481b280abf8c0a Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 25 Dec 2012 14:31:38 -0500 Subject: generic compat_sys_rt_sigpending() conditional on GENERIC_COMPAT_RT_SIGPENDING; by the end of that series it will become the same thing as COMPAT and conditional will die out. Signed-off-by: Al Viro --- include/linux/compat.h | 4 ++++ include/linux/signal.h | 1 - 2 files changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/compat.h b/include/linux/compat.h index 9d3c2a98d537..75548a43a1c5 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -598,6 +598,10 @@ asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set, compat_sigset_t __user *oset, compat_size_t sigsetsize); #endif +#ifdef CONFIG_GENERIC_COMPAT_RT_SIGPENDING +asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset, + compat_size_t sigsetsize); +#endif asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info); asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg); diff --git a/include/linux/signal.h b/include/linux/signal.h index 0a89ffc48466..786bd99fde65 100644 --- a/include/linux/signal.h +++ b/include/linux/signal.h @@ -243,7 +243,6 @@ extern int group_send_sig_info(int sig, struct siginfo *info, struct task_struct extern int __group_send_sig_info(int, struct siginfo *, struct task_struct *); extern long do_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, siginfo_t *info); -extern long do_sigpending(void __user *, unsigned long); extern int do_sigtimedwait(const sigset_t *, siginfo_t *, const struct timespec *); extern int sigprocmask(int, sigset_t *, sigset_t *); -- cgit v1.2.3 From 75907d4d7bc5d79b82d1453d9689efc588de1b43 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 25 Dec 2012 15:19:12 -0500 Subject: generic compat_sys_rt_sigqueueinfo() conditional on GENERIC_COMPAT_RT_SIGQUEUEINFO; by the end of that series it will become the same thing as COMPAT and conditional will die out. Signed-off-by: Al Viro --- include/linux/compat.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/compat.h b/include/linux/compat.h index 75548a43a1c5..bbee15ef3ae9 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -602,6 +602,10 @@ asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set, asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset, compat_size_t sigsetsize); #endif +#ifdef CONFIG_GENERIC_COMPAT_RT_SIGQUEUEINFO +asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig, + struct compat_siginfo __user *uinfo); +#endif asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info); asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg); -- cgit v1.2.3 From 0a0e8cdf734ce723bfc4ca6032ffbc03ce17c642 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 25 Dec 2012 16:04:12 -0500 Subject: old sigsuspend variants in kernel/signal.c conditional on OLD_SIGSUSPEND/OLD_SIGSUSPEND3, depending on which variety of that fossil is needed. Signed-off-by: Al Viro --- include/linux/syscalls.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 75defcd1c276..d2dd2f63d220 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -377,6 +377,14 @@ asmlinkage long sys_init_module(void __user *umod, unsigned long len, asmlinkage long sys_delete_module(const char __user *name_user, unsigned int flags); +#ifdef CONFIG_OLD_SIGSUSPEND +asmlinkage long sys_sigsuspend(old_sigset_t mask); +#endif + +#ifdef CONFIG_OLD_SIGSUSPEND3 +asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask); +#endif + #ifndef CONFIG_ODD_RT_SIGACTION asmlinkage long sys_rt_sigaction(int, const struct sigaction __user *, -- cgit v1.2.3 From 9aae8fc05d2d130797be436eb7cae29c32710193 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 24 Dec 2012 23:12:04 -0500 Subject: switch rt_tgsigqueueinfo to COMPAT_SYSCALL_DEFINE C ABI violations on sparc, ppc and mips Signed-off-by: Al Viro --- include/linux/signal.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/signal.h b/include/linux/signal.h index 786bd99fde65..ed1e71f1aac7 100644 --- a/include/linux/signal.h +++ b/include/linux/signal.h @@ -241,8 +241,6 @@ extern int do_send_sig_info(int sig, struct siginfo *info, struct task_struct *p, bool group); extern int group_send_sig_info(int sig, struct siginfo *info, struct task_struct *p); extern int __group_send_sig_info(int, struct siginfo *, struct task_struct *); -extern long do_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig, - siginfo_t *info); extern int do_sigtimedwait(const sigset_t *, siginfo_t *, const struct timespec *); extern int sigprocmask(int, sigset_t *, sigset_t *); -- cgit v1.2.3 From 92a3ce4a1e0047215aa0a0b30cc333bd32b866a8 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 25 Nov 2012 21:20:05 -0500 Subject: consolidate declarations of k_sigaction Only alpha and sparc are unusual - they have ka_restorer in it. And nobody needs that exposed to userland. Signed-off-by: Al Viro --- include/linux/signal.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/signal.h b/include/linux/signal.h index ed1e71f1aac7..01451a156ff7 100644 --- a/include/linux/signal.h +++ b/include/linux/signal.h @@ -249,6 +249,13 @@ extern void __set_current_blocked(const sigset_t *); extern int show_unhandled_signals; extern int sigsuspend(sigset_t *); +struct k_sigaction { + struct sigaction sa; +#ifdef __ARCH_HAS_KA_RESTORER + __sigrestore_t ka_restorer; +#endif +}; + extern int get_signal_to_deliver(siginfo_t *info, struct k_sigaction *return_ka, struct pt_regs *regs, void *cookie); extern void signal_delivered(int sig, siginfo_t *info, struct k_sigaction *ka, struct pt_regs *regs, int stepping); extern void exit_signals(struct task_struct *tsk); -- cgit v1.2.3 From 574c4866e33d648520a8bd5bf6f573ea6e554e88 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 25 Nov 2012 22:24:19 -0500 Subject: consolidate kernel-side struct sigaction declarations Signed-off-by: Al Viro --- include/linux/signal.h | 14 ++++++++++++++ include/linux/syscalls.h | 2 +- 2 files changed, 15 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/signal.h b/include/linux/signal.h index 01451a156ff7..0b6878e882da 100644 --- a/include/linux/signal.h +++ b/include/linux/signal.h @@ -249,6 +249,20 @@ extern void __set_current_blocked(const sigset_t *); extern int show_unhandled_signals; extern int sigsuspend(sigset_t *); +struct sigaction { +#ifndef __ARCH_HAS_ODD_SIGACTION + __sighandler_t sa_handler; + unsigned long sa_flags; +#else + unsigned long sa_flags; + __sighandler_t sa_handler; +#endif +#ifdef __ARCH_HAS_SA_RESTORER + __sigrestore_t sa_restorer; +#endif + sigset_t sa_mask; /* mask last for extensibility */ +}; + struct k_sigaction { struct sigaction sa; #ifdef __ARCH_HAS_KA_RESTORER diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index d2dd2f63d220..1c4938bf901e 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -68,11 +68,11 @@ struct sigaltstack; #include #include #include +#include #include #include #include #include -#include #include #include #include -- cgit v1.2.3 From 08d32fe504a7670cab3190c624448695adcf70e4 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 25 Dec 2012 18:38:15 -0500 Subject: generic sys_compat_rt_sigaction() Again, protected by a temporary config symbol (GENERIC_COMPAT_RT_SIGACTION); will be gone by the end of series. Signed-off-by: Al Viro --- include/linux/compat.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'include/linux') diff --git a/include/linux/compat.h b/include/linux/compat.h index bbee15ef3ae9..0d53ab4f79c5 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -142,6 +142,22 @@ typedef struct { compat_sigset_word sig[_COMPAT_NSIG_WORDS]; } compat_sigset_t; +#ifdef CONFIG_GENERIC_COMPAT_RT_SIGACTION +struct compat_sigaction { +#ifndef __ARCH_HAS_ODD_SIGACTION + compat_uptr_t sa_handler; + compat_ulong_t sa_flags; +#else + compat_ulong_t sa_flags; + compat_uptr_t sa_handler; +#endif +#ifdef __ARCH_HAS_SA_RESTORER + compat_uptr_t sa_restorer; +#endif + compat_sigset_t sa_mask __packed; +}; +#endif + /* * These functions operate strictly on struct compat_time* */ @@ -602,6 +618,14 @@ asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set, asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset, compat_size_t sigsetsize); #endif +#ifndef CONFIG_ODD_RT_SIGACTION +#ifdef CONFIG_GENERIC_COMPAT_RT_SIGACTION +asmlinkage long compat_sys_rt_sigaction(int, + const struct compat_sigaction __user *, + struct compat_sigaction __user *, + compat_size_t); +#endif +#endif #ifdef CONFIG_GENERIC_COMPAT_RT_SIGQUEUEINFO asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig, struct compat_siginfo __user *uinfo); -- cgit v1.2.3 From 495dfbf767553980dbd40a19a96a8ca5fa1be616 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 25 Dec 2012 19:09:45 -0500 Subject: generic sys_sigaction() and compat_sys_sigaction() conditional on OLD_SIGACTION/COMPAT_OLD_SIGACTION Signed-off-by: Al Viro --- include/linux/compat.h | 14 ++++++++++++++ include/linux/signal.h | 9 +++++++++ include/linux/syscalls.h | 5 +++++ 3 files changed, 28 insertions(+) (limited to 'include/linux') diff --git a/include/linux/compat.h b/include/linux/compat.h index 0d53ab4f79c5..e20b8b404ae9 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -299,6 +299,15 @@ struct compat_robust_list_head { compat_uptr_t list_op_pending; }; +#ifdef CONFIG_COMPAT_OLD_SIGACTION +struct compat_old_sigaction { + compat_uptr_t sa_handler; + compat_old_sigset_t sa_mask; + compat_ulong_t sa_flags; + compat_uptr_t sa_restorer; +}; +#endif + struct compat_statfs; struct compat_statfs64; struct compat_old_linux_dirent; @@ -383,6 +392,11 @@ int get_compat_sigevent(struct sigevent *event, const struct compat_sigevent __user *u_event); long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig, struct compat_siginfo __user *uinfo); +#ifdef CONFIG_COMPAT_OLD_SIGACTION +asmlinkage long compat_sys_sigaction(int sig, + const struct compat_old_sigaction __user *act, + struct compat_old_sigaction __user *oact); +#endif static inline int compat_timeval_compare(struct compat_timeval *lhs, struct compat_timeval *rhs) diff --git a/include/linux/signal.h b/include/linux/signal.h index 0b6878e882da..e28e8d455d6e 100644 --- a/include/linux/signal.h +++ b/include/linux/signal.h @@ -269,6 +269,15 @@ struct k_sigaction { __sigrestore_t ka_restorer; #endif }; + +#ifdef CONFIG_OLD_SIGACTION +struct old_sigaction { + __sighandler_t sa_handler; + old_sigset_t sa_mask; + unsigned long sa_flags; + __sigrestore_t sa_restorer; +}; +#endif extern int get_signal_to_deliver(siginfo_t *info, struct k_sigaction *return_ka, struct pt_regs *regs, void *cookie); extern void signal_delivered(int sig, siginfo_t *info, struct k_sigaction *ka, struct pt_regs *regs, int stepping); diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 1c4938bf901e..02b045012785 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -385,6 +385,11 @@ asmlinkage long sys_sigsuspend(old_sigset_t mask); asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask); #endif +#ifdef CONFIG_OLD_SIGACTION +asmlinkage long sys_sigaction(int, const struct old_sigaction __user *, + struct old_sigaction __user *); +#endif + #ifndef CONFIG_ODD_RT_SIGACTION asmlinkage long sys_rt_sigaction(int, const struct sigaction __user *, -- cgit v1.2.3 From f482e1b4a4abf926507a4c1c6317acd3e7aa61b7 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 25 Dec 2012 20:24:38 -0500 Subject: switch compat_sys_open* to COMPAT_SYSCALL_DEFINE --- include/linux/compat.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/compat.h b/include/linux/compat.h index e20b8b404ae9..8de903587fb9 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -534,7 +534,7 @@ asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *, unsigned int nr_segs, unsigned int flags); asmlinkage long compat_sys_open(const char __user *filename, int flags, umode_t mode); -asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename, +asmlinkage long compat_sys_openat(int dfd, const char __user *filename, int flags, umode_t mode); asmlinkage long compat_sys_open_by_handle_at(int mountdirfd, struct file_handle __user *handle, -- cgit v1.2.3 From ca86b5dce213f52c7538932740f83cafb2c34547 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 7 Nov 2012 15:09:38 -0500 Subject: new helper: get_signal() On success get_signal_to_deliver() fills k_sigaction and siginfo. _All_ users pass it addresses of the local variables sitting in the same function. Then they proceed to pass those addresses pretty much in tandem to a bunch of helper functions; again, all callers of those helpers are passing them such a pair, and one that had been through get_signal_to_deliver() at that. The obvious cleanup: introduce a new type that would contain a pair (struct ksignal) and begin switching to using it. Turns out that it's convenient to store the signal number in the same object. New helper, taking that sucker is a wrapper for get_signal_to_deliver(); takes struct ksignal * and returns bool. On success fills ksignal with the information for signal handler to be invoked. For now it's a macro (to avoid header ordering headache), but eventually it'll be a function in kernel/signal.c, with get_signal_to_deliver() folded into it. Signed-off-by: Al Viro --- include/linux/signal.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'include/linux') diff --git a/include/linux/signal.h b/include/linux/signal.h index e28e8d455d6e..7c2744198dba 100644 --- a/include/linux/signal.h +++ b/include/linux/signal.h @@ -279,10 +279,28 @@ struct old_sigaction { }; #endif +struct ksignal { + struct k_sigaction ka; + siginfo_t info; + int sig; +}; + extern int get_signal_to_deliver(siginfo_t *info, struct k_sigaction *return_ka, struct pt_regs *regs, void *cookie); extern void signal_delivered(int sig, siginfo_t *info, struct k_sigaction *ka, struct pt_regs *regs, int stepping); extern void exit_signals(struct task_struct *tsk); +/* + * Eventually that'll replace get_signal_to_deliver(); macro for now, + * to avoid nastiness with include order. + */ +#define get_signal(ksig) \ +({ \ + struct ksignal *p = (ksig); \ + p->sig = get_signal_to_deliver(&p->info, &p->ka, \ + signal_pt_regs(), NULL);\ + p->sig > 0; \ +}) + extern struct kmem_cache *sighand_cachep; int unhandled_signal(struct task_struct *tsk, int sig); -- cgit v1.2.3 From 2ce5da17570771330f44ac993b77749debf7954b Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 7 Nov 2012 15:11:25 -0500 Subject: new helper: signal_setup_done() usual "call force_sigsegv or signal_delivered" logics. Takes ksignal instead of separate siginfo/k_sigaction. Signed-off-by: Al Viro --- include/linux/signal.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/signal.h b/include/linux/signal.h index 7c2744198dba..a2dcb94ea49d 100644 --- a/include/linux/signal.h +++ b/include/linux/signal.h @@ -286,6 +286,7 @@ struct ksignal { }; extern int get_signal_to_deliver(siginfo_t *info, struct k_sigaction *return_ka, struct pt_regs *regs, void *cookie); +extern void signal_setup_done(int failed, struct ksignal *ksig, int stepping); extern void signal_delivered(int sig, siginfo_t *info, struct k_sigaction *ka, struct pt_regs *regs, int stepping); extern void exit_signals(struct task_struct *tsk); -- cgit v1.2.3 From 5a1b98d3096f1d780045f9be812335ad77aed93d Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 6 Nov 2012 13:28:21 -0500 Subject: new helper: sigsp() Normal logics for altstack handling in sigframe allocation Signed-off-by: Al Viro --- include/linux/sched.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 6fc8f45de4e9..8f983293b403 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2305,6 +2305,17 @@ static inline int sas_ss_flags(unsigned long sp) : on_sig_stack(sp) ? SS_ONSTACK : 0); } +static inline unsigned long sigsp(unsigned long sp, struct ksignal *ksig) +{ + if (unlikely((ksig->ka.sa.sa_flags & SA_ONSTACK)) && ! sas_ss_flags(sp)) +#ifdef CONFIG_STACK_GROWSUP + return current->sas_ss_sp; +#else + return current->sas_ss_sp + current->sas_ss_size; +#endif + return sp; +} + /* * Routines for handling mm_structs */ -- cgit v1.2.3 From 0aa0203fb43f04714004b2c4ad33b858e240555d Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 25 Nov 2012 02:30:08 -0500 Subject: take sys_rt_sigsuspend() prototype to linux/syscalls.h Signed-off-by: Al Viro --- include/linux/syscalls.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 02b045012785..66d298f69f98 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -385,6 +385,8 @@ asmlinkage long sys_sigsuspend(old_sigset_t mask); asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask); #endif +asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize); + #ifdef CONFIG_OLD_SIGACTION asmlinkage long sys_sigaction(int, const struct old_sigaction __user *, struct old_sigaction __user *); -- cgit v1.2.3 From 7f70410fe03f9f31a99bb5074b5e3c48f3b90541 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Thu, 31 Jan 2013 14:42:16 -0700 Subject: pci_ids.h: add common pci vendor ids from comedi subsystem There are a number of pci vendor ids that are used in multiple drivers in the comedi subsystem. Move these ids to pci_ids.h. This also fixes some build warnings reported by the kbuild test robot about PCI_VENDOR_ID_AMPLICON being undeclared. Signed-off-by: H Hartley Sweeten Signed-off-by: Greg Kroah-Hartman --- include/linux/pci_ids.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 0eb65796bcb9..747c8b7e97bd 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -1807,6 +1807,8 @@ #define PCI_VENDOR_ID_ESDGMBH 0x12fe #define PCI_DEVICE_ID_ESDGMBH_CPCIASIO4 0x0111 +#define PCI_VENDOR_ID_CB 0x1307 /* Measurement Computing */ + #define PCI_VENDOR_ID_SIIG 0x131f #define PCI_SUBVENDOR_ID_SIIG 0x131f #define PCI_DEVICE_ID_SIIG_1S_10x_550 0x1000 @@ -2013,6 +2015,10 @@ #define PCI_DEVICE_ID_CMEDIA_CM8738 0x0111 #define PCI_DEVICE_ID_CMEDIA_CM8738B 0x0112 +#define PCI_VENDOR_ID_ADVANTECH 0x13fe + +#define PCI_VENDOR_ID_MEILHAUS 0x1402 + #define PCI_VENDOR_ID_LAVA 0x1407 #define PCI_DEVICE_ID_LAVA_DSERIAL 0x0100 /* 2x 16550 */ #define PCI_DEVICE_ID_LAVA_QUATRO_A 0x0101 /* 2x 16550, half of 4 port */ @@ -2058,6 +2064,8 @@ #define PCI_VENDOR_ID_CHELSIO 0x1425 +#define PCI_VENDOR_ID_ADLINK 0x144a + #define PCI_VENDOR_ID_SAMSUNG 0x144d #define PCI_VENDOR_ID_GIGABYTE 0x1458 @@ -2091,6 +2099,8 @@ #define PCI_DEVICE_ID_AFAVLAB_P030 0x2182 #define PCI_SUBDEVICE_ID_AFAVLAB_P061 0x2150 +#define PCI_VENDOR_ID_AMPLICON 0x14dc + #define PCI_VENDOR_ID_BCM_GVC 0x14a4 #define PCI_VENDOR_ID_BROADCOM 0x14e4 #define PCI_DEVICE_ID_TIGON3_5752 0x1600 -- cgit v1.2.3 From bf22433575ef30a4807f0620498017df0f27df67 Mon Sep 17 00:00:00 2001 From: Philip Avinash Date: Fri, 4 Jan 2013 13:26:50 +0530 Subject: mtd: devices: elm: Add support for ELM error correction The ELM hardware module can be used to speedup BCH 4/8/16 ECC scheme error correction. For now only 4 & 8 bit support is added Signed-off-by: Philip Avinash Signed-off-by: Artem Bityutskiy --- include/linux/platform_data/elm.h | 53 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 include/linux/platform_data/elm.h (limited to 'include/linux') diff --git a/include/linux/platform_data/elm.h b/include/linux/platform_data/elm.h new file mode 100644 index 000000000000..11ab6aaf2431 --- /dev/null +++ b/include/linux/platform_data/elm.h @@ -0,0 +1,53 @@ +/* + * BCH Error Location Module + * + * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __ELM_H +#define __ELM_H + +enum bch_ecc { + BCH4_ECC = 0, + BCH8_ECC, +}; + +/* ELM support 8 error syndrome process */ +#define ERROR_VECTOR_MAX 8 + +#define BCH8_ECC_OOB_BYTES 13 +#define BCH4_ECC_OOB_BYTES 7 +/* RBL requires 14 byte even though BCH8 uses only 13 byte */ +#define BCH8_SIZE (BCH8_ECC_OOB_BYTES + 1) +#define BCH4_SIZE (BCH4_ECC_OOB_BYTES) + +/** + * struct elm_errorvec - error vector for elm + * @error_reported: set true for vectors error is reported + * @error_uncorrectable: number of uncorrectable errors + * @error_count: number of correctable errors in the sector + * @error_loc: buffer for error location + * + */ +struct elm_errorvec { + bool error_reported; + bool error_uncorrectable; + int error_count; + int error_loc[ERROR_VECTOR_MAX]; +}; + +void elm_decode_bch_error_page(struct device *dev, u8 *ecc_calc, + struct elm_errorvec *err_vec); +void elm_config(struct device *dev, enum bch_ecc bch_type); +#endif /* __ELM_H */ -- cgit v1.2.3 From 62116e5171e00f85a8d53f76e45b84423c89ff34 Mon Sep 17 00:00:00 2001 From: Philip Avinash Date: Fri, 4 Jan 2013 13:26:51 +0530 Subject: mtd: nand: omap2: Support for hardware BCH error correction. ELM module can be used for hardware error correction of BCH 4 & 8 bit. ELM module functionality is verified by checking the availability of handle for ELM module in device tree. Hence supporting 1. ELM module available, BCH error correction done by ELM module. Also support read & write page in one shot by adding custom read_page and write_page methods. This helps in optimizing code for NAND flashes with page size less than 4 KB. 2. If ELM module not available fall back to software BCH error correction support. New structure member is added to omap_nand_info 1. "is_elm_used" to know the status of whether the ELM module is used for error correction or not. 2. "elm_dev" device pointer to elm device on detection of ELM module. Also being here update the device tree documentation of gpmc-nand for adding optional property elm_id. Note: ECC layout uses 1 extra bytes for 512 byte of data to handle erased pages. Extra byte programmed to zero for programmed pages. Also BCH8 requires 14 byte ecc to maintain compatibility with RBL ECC layout. This results a common ecc layout across RBL, U-boot & Linux with BCH8. Signed-off-by: Philip Avinash Signed-off-by: Artem Bityutskiy --- include/linux/platform_data/elm.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/elm.h b/include/linux/platform_data/elm.h index 11ab6aaf2431..1bd5244d1dcd 100644 --- a/include/linux/platform_data/elm.h +++ b/include/linux/platform_data/elm.h @@ -30,7 +30,8 @@ enum bch_ecc { #define BCH4_ECC_OOB_BYTES 7 /* RBL requires 14 byte even though BCH8 uses only 13 byte */ #define BCH8_SIZE (BCH8_ECC_OOB_BYTES + 1) -#define BCH4_SIZE (BCH4_ECC_OOB_BYTES) +/* Uses 1 extra byte to handle erased pages */ +#define BCH4_SIZE (BCH4_ECC_OOB_BYTES + 1) /** * struct elm_errorvec - error vector for elm -- cgit v1.2.3 From a2f74a7dacc1c17a0b146eb3112217874c5db436 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Sun, 6 Jan 2013 21:28:50 +0100 Subject: mtd: bcm47xxsflash: add own struct for abstrating bus type MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Rafał Miłecki --- include/linux/bcma/bcma_driver_chipcommon.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h index 9a0e3fa3ca95..a5bfda6b0a76 100644 --- a/include/linux/bcma/bcma_driver_chipcommon.h +++ b/include/linux/bcma/bcma_driver_chipcommon.h @@ -528,6 +528,7 @@ struct bcma_sflash { u32 size; struct mtd_info *mtd; + void *priv; }; #endif -- cgit v1.2.3 From 1648eaaa1575ea686acb82fb8cb3d8839764ef2c Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Fri, 18 Jan 2013 13:10:05 +0100 Subject: mtd: cfi_cmdset_0002: Support Persistent Protection Bits (PPB) locking Currently cfi_cmdset_0002.c does not support PPB locking of sectors. This patch adds support for this locking/unlocking mechanism. It is needed on some platforms, since newer U-Boot versions do support this PPB locking and protect for example their environment sector(s) this way. This PPB locking/unlocking will be enabled for all devices supported by cfi_cmdset_0002 reporting 8 in the CFI word 0x49 (Sector Protect/Unprotect scheme). Please note that PPB locking does support sector-by-sector locking. But the whole chip can only be unlocked together. So unlocking one sector will automatically unlock all sectors of this device. Because of this chip limitation, the PPB unlocking function saves the current locking status of all sectors before unlocking the whole device. After unlocking the saved locking status is re-configured. This way only the addressed sectors will be unlocked. To selectively enable this advanced sector protection mechanism, the device-tree property "use-advanced-sector-protection" has been created. To enable support for this locking this property needs to be present in the flash DT node. E.g.: nor_flash@0,0 { compatible = "amd,s29gl256n", "cfi-flash"; bank-width = <2>; use-advanced-sector-protection; ... Tested with Spansion S29GL512S10THI and Micron JS28F512M29EWx flash devices. Signed-off-by: Stefan Roese Tested-by: Holger Brunck Signed-off-by: Artem Bityutskiy --- include/linux/mtd/map.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h index f6eb4332ac92..8b9bfd7dcaa3 100644 --- a/include/linux/mtd/map.h +++ b/include/linux/mtd/map.h @@ -245,6 +245,7 @@ struct map_info { unsigned long pfow_base; unsigned long map_priv_1; unsigned long map_priv_2; + struct device_node *device_node; void *fldrv_priv; struct mtd_chip_driver *fldrv; }; -- cgit v1.2.3 From 379749c46320c82df95c7909ec888da8ed1fb22c Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Mon, 14 Jan 2013 13:26:15 +0000 Subject: mfd: ab8500-sysctrl: Provide a platform specific pm_power_off() call-back The kernel allows us to specify a function call-back which will be invoked when a system power-off request has been received. Here we provide one which is to be used when shutting down AB8500 based platforms. Signed-off-by: Lee Jones --- include/linux/mfd/abx500/ab8500.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500/ab8500.h b/include/linux/mfd/abx500/ab8500.h index 1cb5698b4d76..6119b2fbad97 100644 --- a/include/linux/mfd/abx500/ab8500.h +++ b/include/linux/mfd/abx500/ab8500.h @@ -274,6 +274,7 @@ struct ab8500_codec_platform_data; /** * struct ab8500_platform_data - AB8500 platform data * @irq_base: start of AB8500 IRQs, AB8500_NR_IRQS will be used + * @pm_power_off: Should machine pm power off hook be registered or not * @init: board-specific initialization after detection of ab8500 * @num_regulator_reg_init: number of regulator init registers * @regulator_reg_init: regulator init registers @@ -282,6 +283,7 @@ struct ab8500_codec_platform_data; */ struct ab8500_platform_data { int irq_base; + bool pm_power_off; void (*init) (struct ab8500 *); int num_regulator_reg_init; struct ab8500_regulator_reg_init *regulator_reg_init; -- cgit v1.2.3 From 1abf063ffd18e6934bb81a776b3d71278eeff4ab Mon Sep 17 00:00:00 2001 From: Kennet Wallden Date: Tue, 27 Sep 2011 09:23:56 +0200 Subject: mfd: ab8500-sysctrl: Provide configuration for SysClkReqRfClkBuf registers Add the possibility to pass configuration settings for SysCl1kReqRfClkBuf to SysClk8ReqRfClkBuf via platform data. Signed-off-by: Lee Jones Signed-off-by: Kennet Wallden Reviewed-by: Karl-Johan PERNTZ Reviewed-by: Bengt JONSSON --- include/linux/mfd/abx500/ab8500-sysctrl.h | 5 +++++ include/linux/mfd/abx500/ab8500.h | 2 ++ 2 files changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500/ab8500-sysctrl.h b/include/linux/mfd/abx500/ab8500-sysctrl.h index 10eb50973c39..ebf12e793db9 100644 --- a/include/linux/mfd/abx500/ab8500-sysctrl.h +++ b/include/linux/mfd/abx500/ab8500-sysctrl.h @@ -37,6 +37,11 @@ static inline int ab8500_sysctrl_clear(u16 reg, u8 bits) return ab8500_sysctrl_write(reg, bits, 0); } +/* Configuration data for SysClkReq1RfClkBuf - SysClkReq8RfClkBuf */ +struct ab8500_sysctrl_platform_data { + u8 initial_req_buf_config[8]; +}; + /* Registers */ #define AB8500_TURNONSTATUS 0x100 #define AB8500_RESETSTATUS 0x101 diff --git a/include/linux/mfd/abx500/ab8500.h b/include/linux/mfd/abx500/ab8500.h index 6119b2fbad97..5251bca56326 100644 --- a/include/linux/mfd/abx500/ab8500.h +++ b/include/linux/mfd/abx500/ab8500.h @@ -270,6 +270,7 @@ struct regulator_reg_init; struct regulator_init_data; struct ab8500_gpio_platform_data; struct ab8500_codec_platform_data; +struct ab8500_sysctrl_platform_data; /** * struct ab8500_platform_data - AB8500 platform data @@ -291,6 +292,7 @@ struct ab8500_platform_data { struct regulator_init_data *regulator; struct ab8500_gpio_platform_data *gpio; struct ab8500_codec_platform_data *codec; + struct ab8500_sysctrl_platform_data *sysctrl; }; extern int ab8500_init(struct ab8500 *ab8500, -- cgit v1.2.3 From e0f4fec030ce412666cc127702adbf0a6cfa0855 Mon Sep 17 00:00:00 2001 From: Mian Yousaf Kaukab Date: Fri, 27 Jan 2012 11:22:16 +0100 Subject: mfd: abx500-core: Provide an API to dump all ABx500 registers Some drivers can detect subsystem failures e.g. shared memory driver can detect modem sub system failures. It would be helpful in analyzing these failures if AB register dump is available at that point. This patch adds the API for the drivers to dump AB registers in the kernel log. Signed-off-by: Lee Jones Signed-off-by: Mian Yousaf Kaukab Reviewed-by: Linus WALLEIJ Reviewed-by: Jonas ABERG --- include/linux/mfd/abx500.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h index 2138bd33021a..bd480b248c62 100644 --- a/include/linux/mfd/abx500.h +++ b/include/linux/mfd/abx500.h @@ -308,6 +308,7 @@ int abx500_mask_and_set_register_interruptible(struct device *dev, u8 bank, int abx500_get_chip_id(struct device *dev); int abx500_event_registers_startup_state_get(struct device *dev, u8 *event); int abx500_startup_irq_enabled(struct device *dev, unsigned int irq); +void abx500_dump_all_banks(void); struct abx500_ops { int (*get_chip_id) (struct device *); @@ -318,6 +319,7 @@ struct abx500_ops { int (*mask_and_set_register) (struct device *, u8, u8, u8, u8); int (*event_registers_startup_state_get) (struct device *, u8 *); int (*startup_irq_enabled) (struct device *, unsigned int); + void (*dump_all_banks) (struct device *); }; int abx500_register_ops(struct device *core_dev, struct abx500_ops *ops); -- cgit v1.2.3 From 1d843a6c8c2067615fea0ff8cb62d4a5c4a6f8ae Mon Sep 17 00:00:00 2001 From: Mian Yousaf Kaukab Date: Fri, 27 Jan 2012 11:35:41 +0100 Subject: mfd: ab8500-core: Allow the possibility to dump all AB8500 registers Implement an API so that a user may dump all AB8500 registers via debugfs file access. Signed-off-by: Lee Jones Signed-off-by: Mian Yousaf Kaukab Reviewed-by: Linus WALLEIJ Reviewed-by: Jonas ABERG --- include/linux/mfd/abx500/ab8500.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500/ab8500.h b/include/linux/mfd/abx500/ab8500.h index 5251bca56326..dbec7b00ea83 100644 --- a/include/linux/mfd/abx500/ab8500.h +++ b/include/linux/mfd/abx500/ab8500.h @@ -345,4 +345,10 @@ static inline int is_ab8500_2p0(struct ab8500 *ab) return (is_ab8500(ab) && (ab->chip_id == AB8500_CUT2P0)); } +#ifdef CONFIG_AB8500_DEBUG +void ab8500_dump_all_banks(struct device *dev); +#else +static inline void ab8500_dump_all_banks(struct device *dev) {} +#endif + #endif /* MFD_AB8500_H */ -- cgit v1.2.3 From 8f0eb43be5f461a28341fe724686f265b0719dd3 Mon Sep 17 00:00:00 2001 From: Bengt Jonsson Date: Tue, 14 Feb 2012 13:01:00 +0100 Subject: mfd: ab8500-debugfs: Add interrupt debug This patch adds an entry in debugfs to check number of interrupts from the AB. Signed-off-by: Lee Jones Signed-off-by: Bengt Jonsson Reviewed-by: Rabin VINCENT --- include/linux/mfd/abx500/ab8500.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500/ab8500.h b/include/linux/mfd/abx500/ab8500.h index dbec7b00ea83..fa7173dd71f2 100644 --- a/include/linux/mfd/abx500/ab8500.h +++ b/include/linux/mfd/abx500/ab8500.h @@ -347,8 +347,10 @@ static inline int is_ab8500_2p0(struct ab8500 *ab) #ifdef CONFIG_AB8500_DEBUG void ab8500_dump_all_banks(struct device *dev); +void ab8500_debug_register_interrupt(int line); #else static inline void ab8500_dump_all_banks(struct device *dev) {} +static inline void ab8500_debug_register_interrupt(int line) {} #endif #endif /* MFD_AB8500_H */ -- cgit v1.2.3 From 26aec009f6b61c077c6de1a96cca7a5132851dbe Mon Sep 17 00:00:00 2001 From: Amit Daniel Kachhap Date: Sun, 3 Feb 2013 15:49:47 -0800 Subject: regulator: add device tree support for s5m8767 This device tree support is added for PMIC block of S5m8767 multi function driver. The usage detail is added in the device tree documentation section. This change is tested on exynos5250 based arndale platform by regulator voltage set/get API's. Reviewed-by: Thomas Abraham Signed-off-by: Amit Daniel Kachhap Tested-by: Sachin Kamat Signed-off-by: Mark Brown --- include/linux/mfd/samsung/core.h | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/samsung/core.h b/include/linux/mfd/samsung/core.h index b50c38f8bc48..f0f4de3b4ccc 100644 --- a/include/linux/mfd/samsung/core.h +++ b/include/linux/mfd/samsung/core.h @@ -26,6 +26,7 @@ enum sec_device_type { /** * struct sec_pmic_dev - s5m87xx master device for sub-drivers * @dev: master device of the chip (can be used to access platform data) + * @pdata: pointer to private data used to pass platform data to child * @i2c: i2c client private data for regulator * @rtc: i2c client private data for rtc * @iolock: mutex for serializing io access @@ -39,6 +40,7 @@ enum sec_device_type { */ struct sec_pmic_dev { struct device *dev; + struct sec_platform_data *pdata; struct regmap *regmap; struct i2c_client *i2c; struct i2c_client *rtc; @@ -82,11 +84,11 @@ struct sec_platform_data { int buck_gpios[3]; int buck_ds[3]; - int buck2_voltage[8]; + unsigned int buck2_voltage[8]; bool buck2_gpiodvs; - int buck3_voltage[8]; + unsigned int buck3_voltage[8]; bool buck3_gpiodvs; - int buck4_voltage[8]; + unsigned int buck4_voltage[8]; bool buck4_gpiodvs; int buck_set1; @@ -127,6 +129,7 @@ struct sec_platform_data { struct sec_regulator_data { int id; struct regulator_init_data *initdata; + struct device_node *reg_node; }; /* @@ -136,7 +139,7 @@ struct sec_regulator_data { */ struct sec_opmode_data { int id; - int mode; + unsigned int mode; }; /* -- cgit v1.2.3 From c02cf5f8ed6137e2b3b2f10e0fca336e06e09ba4 Mon Sep 17 00:00:00 2001 From: anish kumar Date: Sun, 3 Feb 2013 22:08:23 +0100 Subject: irq_work: Remove return value from the irq_work_queue() function As no one is using the return value of irq_work_queue(), so it is better to just make it void. Signed-off-by: anish kumar Acked-by: Steven Rostedt [ Fix stale comments, remove now unnecessary __irq_work_queue() intermediate function ] Signed-off-by: Frederic Weisbecker Link: http://lkml.kernel.org/r/1359925703-24304-1-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar --- include/linux/irq_work.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h index 6a9e8f5399e2..ce60c084635b 100644 --- a/include/linux/irq_work.h +++ b/include/linux/irq_work.h @@ -16,7 +16,7 @@ void init_irq_work(struct irq_work *work, void (*func)(struct irq_work *)) work->func = func; } -bool irq_work_queue(struct irq_work *work); +void irq_work_queue(struct irq_work *work); void irq_work_run(void); void irq_work_sync(struct irq_work *work); -- cgit v1.2.3 From 7b9e8522a65886d8ae168547a67c3617b6ba83f1 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 28 Jan 2013 14:41:07 -0500 Subject: nfsd: fix IPv6 address handling in the DRC Currently, it only stores the first 16 bytes of any address. struct sockaddr_in6 is 28 bytes however, so we're currently ignoring the last 12 bytes of the address. Expand the c_addr field to a sockaddr_in6, and cast it to a sockaddr_in as necessary. Also fix the comparitor to use the existing RPC helpers for this. Signed-off-by: Jeff Layton Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/clnt.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index 34206b84d8da..47354a25a927 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -263,7 +263,9 @@ static inline bool __rpc_copy_addr6(struct sockaddr *dst, * @sap1: first sockaddr * @sap2: second sockaddr * - * Just compares the family and address portion. Ignores port, scope, etc. + * Just compares the family and address portion. Ignores port, but + * compares the scope if it's a link-local address. + * * Returns true if the addrs are equal, false if they aren't. */ static inline bool rpc_cmp_addr(const struct sockaddr *sap1, -- cgit v1.2.3 From 3f52b7e328c526fa7a592af9bf5772c591ed38a4 Mon Sep 17 00:00:00 2001 From: Marco Porsch Date: Wed, 30 Jan 2013 18:14:08 +0100 Subject: mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch Signed-off-by: Ivan Bezyazychnyy Signed-off-by: Mike Krinkin Signed-off-by: Max Filippov Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 11c8bc87fdcb..7e8a498efe6d 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -151,6 +151,11 @@ /* Mesh Control 802.11s */ #define IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT 0x0100 +/* Mesh Power Save Level */ +#define IEEE80211_QOS_CTL_MESH_PS_LEVEL 0x0200 +/* Mesh Receiver Service Period Initiated */ +#define IEEE80211_QOS_CTL_RSPI 0x0400 + /* U-APSD queue for WMM IEs sent by AP */ #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD (1<<7) #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK 0x0f @@ -675,11 +680,14 @@ struct ieee80211_meshconf_ie { * @IEEE80211_MESHCONF_CAPAB_FORWARDING: the STA forwards MSDUs * @IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING: TBTT adjustment procedure * is ongoing + * @IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL: STA is in deep sleep mode or has + * neighbors in deep sleep mode */ enum mesh_config_capab_flags { IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS = 0x01, IEEE80211_MESHCONF_CAPAB_FORWARDING = 0x08, IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING = 0x20, + IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL = 0x40, }; /** -- cgit v1.2.3 From 16559ae48c76f1ceb970b9719dea62b77eb5d06b Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 4 Feb 2013 15:35:26 -0800 Subject: kgdb: remove #include from kgdb.h There's no reason kgdb.h itself needs to include the 8250 serial port header file. So push it down to the _very_ limited number of individual drivers that need the values in that file, and fix up the places where people really wanted serial_core.h and platform_device.h. Signed-off-by: Greg Kroah-Hartman --- include/linux/kgdb.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kgdb.h b/include/linux/kgdb.h index 4dff0c6ed58f..c6e091bf39a5 100644 --- a/include/linux/kgdb.h +++ b/include/linux/kgdb.h @@ -13,7 +13,6 @@ #ifndef _KGDB_H_ #define _KGDB_H_ -#include #include #include #include -- cgit v1.2.3 From 7be88b4ccb62737abe4bf27f9e66e224a70a12c4 Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Wed, 30 Jan 2013 12:43:51 -0500 Subject: tty: Document required behavior of tty driver close() If the tty driver open() fails, the tty driver close() is still called during the resultant tty release. Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- include/linux/tty_driver.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h index dd976cfb6131..756a60989294 100644 --- a/include/linux/tty_driver.h +++ b/include/linux/tty_driver.h @@ -40,6 +40,7 @@ * void (*close)(struct tty_struct * tty, struct file * filp); * * This routine is called when a particular tty device is closed. + * Note: called even if the corresponding open() failed. * * Required method. * -- cgit v1.2.3 From c14b78e7decd0d1d5add6a4604feb8609fe920a9 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Tue, 5 Feb 2013 01:50:26 +0100 Subject: netfilter: nfnetlink: add mutex per subsystem This patch replaces the global lock to one lock per subsystem. The per-subsystem lock avoids that processes operating with different subsystems are synchronized. Signed-off-by: Pablo Neira Ayuso --- include/linux/netfilter/nfnetlink.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netfilter/nfnetlink.h b/include/linux/netfilter/nfnetlink.h index 4966ddec039b..ecbb8e495912 100644 --- a/include/linux/netfilter/nfnetlink.h +++ b/include/linux/netfilter/nfnetlink.h @@ -34,8 +34,8 @@ extern int nfnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigne extern int nfnetlink_set_err(struct net *net, u32 pid, u32 group, int error); extern int nfnetlink_unicast(struct sk_buff *skb, struct net *net, u_int32_t pid, int flags); -extern void nfnl_lock(void); -extern void nfnl_unlock(void); +extern void nfnl_lock(__u8 subsys_id); +extern void nfnl_unlock(__u8 subsys_id); #define MODULE_ALIAS_NFNL_SUBSYS(subsys) \ MODULE_ALIAS("nfnetlink-subsys-" __stringify(subsys)) -- cgit v1.2.3 From 631b0cfdbd801ceae8762e8d287f15da26792ebe Mon Sep 17 00:00:00 2001 From: Yuanhan Liu Date: Mon, 4 Feb 2013 14:28:48 -0800 Subject: mm: fix wrong comments about anon_vma lock We use rwsem since commit 5a505085f043 ("mm/rmap: Convert the struct anon_vma::mutex to an rwsem"). And most of comments are converted to the new rwsem lock; while just 2 more missed from: $ git grep 'anon_vma->mutex' Signed-off-by: Yuanhan Liu Acked-by: Ingo Molnar Cc: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmu_notifier.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h index bc823c4c028b..deca87452528 100644 --- a/include/linux/mmu_notifier.h +++ b/include/linux/mmu_notifier.h @@ -151,7 +151,7 @@ struct mmu_notifier_ops { * Therefore notifier chains can only be traversed when either * * 1. mmap_sem is held. - * 2. One of the reverse map locks is held (i_mmap_mutex or anon_vma->mutex). + * 2. One of the reverse map locks is held (i_mmap_mutex or anon_vma->rwsem). * 3. No other concurrent thread can access the list (release) */ struct mmu_notifier { -- cgit v1.2.3 From 91c777d86752b00bb3a1d8efa3d8f7e1264f38a9 Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Mon, 4 Feb 2013 14:28:49 -0800 Subject: memcg: fix typo in kmemcg cache walk macro The macro for_each_memcg_cache_index contains a silly yet potentially deadly mistake. Although the macro parameter is _idx, the loop tests are done over i, not _idx. This hasn't generated any problems so far, because all users use i as a loop index. However, while playing with an extension of the code I ended using another loop index and the compiler was quick to complain. Unfortunately, this is not the kind of thing that testing reveals =( Signed-off-by: Glauber Costa Cc: Kamezawa Hiroyuki Cc: Johannes Weiner Acked-by: Michal Hocko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 0108a56f814e..28bd5fa2ff2e 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -429,7 +429,7 @@ extern int memcg_limited_groups_array_size; * the slab_mutex must be held when looping through those caches */ #define for_each_memcg_cache_index(_idx) \ - for ((_idx) = 0; i < memcg_limited_groups_array_size; (_idx)++) + for ((_idx) = 0; (_idx) < memcg_limited_groups_array_size; (_idx)++) static inline bool memcg_kmem_enabled(void) { -- cgit v1.2.3 From 7fa4cf920c36a4736b8fa7c0e262dcf292d0cd36 Mon Sep 17 00:00:00 2001 From: Jesper Dangaard Brouer Date: Mon, 4 Feb 2013 23:14:12 +0100 Subject: percpu_counter.h: comment code for better readability Help people reading the percpu_counter code, to notice the ifdef else statement that seperates CONFIG_SMP. Signed-off-by: Jesper Dangaard Brouer Acked-by: Tejun Heo Signed-off-by: Jiri Kosina --- include/linux/percpu_counter.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/percpu_counter.h b/include/linux/percpu_counter.h index b9df9ed1adc0..d5dd4657c8d6 100644 --- a/include/linux/percpu_counter.h +++ b/include/linux/percpu_counter.h @@ -83,7 +83,7 @@ static inline int percpu_counter_initialized(struct percpu_counter *fbc) return (fbc->counters != NULL); } -#else +#else /* !CONFIG_SMP */ struct percpu_counter { s64 count; -- cgit v1.2.3 From 6d85d037d6247b06e1060b5e5ad0e4854a7d1e3b Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Thu, 31 Jan 2013 17:22:23 +0100 Subject: HID: core: add "report" hook, called once the report has been parsed This callback is called when the parsing of the report has been done by hid-core (so after the calls to .event). The hid drivers can now have access to the whole report by relying on the values stored in the different fields. Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- include/linux/hid.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/hid.h b/include/linux/hid.h index 7330a0fef0c0..9f56e9040f66 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -589,6 +589,7 @@ struct hid_usage_id { * @raw_event: if report in report_table, this hook is called (NULL means nop) * @usage_table: on which events to call event (NULL means all) * @event: if usage in usage_table, this hook is called (NULL means nop) + * @report: this hook is called after parsing a report (NULL means nop) * @report_fixup: called before report descriptor parsing (NULL means nop) * @input_mapping: invoked on input registering before mapping an usage * @input_mapped: invoked on input registering after mapping an usage @@ -627,6 +628,7 @@ struct hid_driver { const struct hid_usage_id *usage_table; int (*event)(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage, __s32 value); + void (*report)(struct hid_device *hdev, struct hid_report *report); __u8 *(*report_fixup)(struct hid_device *hdev, __u8 *buf, unsigned int *size); -- cgit v1.2.3 From 155a345a52e6cda18946efe2529d99d5040fad6d Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 4 Feb 2013 08:10:08 -0500 Subject: sunrpc: copy scope ID in __rpc_copy_addr6 When copying an address, we should also copy the scopeid in the event that this is a link-local address and the scope matters. Signed-off-by: Jeff Layton Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/clnt.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index 47354a25a927..6a7c2619a355 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -242,6 +242,7 @@ static inline bool __rpc_copy_addr6(struct sockaddr *dst, dsin6->sin6_family = ssin6->sin6_family; dsin6->sin6_addr = ssin6->sin6_addr; + dsin6->sin6_scope_id = ssin6->sin6_scope_id; return true; } #else /* !(IS_ENABLED(CONFIG_IPV6) */ -- cgit v1.2.3 From 5976687a2b3d1969f02aba16b80ad3ed79be6ad3 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 4 Feb 2013 12:50:00 -0500 Subject: sunrpc: move address copy/cmp/convert routines and prototypes from clnt.h to addr.h These routines are used by server and client code, so having them in a separate header would be best. Signed-off-by: Jeff Layton Acked-by: Trond Myklebust Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/addr.h | 170 ++++++++++++++++++++++++++++++++++++++++++++ include/linux/sunrpc/clnt.h | 155 ---------------------------------------- 2 files changed, 170 insertions(+), 155 deletions(-) create mode 100644 include/linux/sunrpc/addr.h (limited to 'include/linux') diff --git a/include/linux/sunrpc/addr.h b/include/linux/sunrpc/addr.h new file mode 100644 index 000000000000..07d8e53bedfc --- /dev/null +++ b/include/linux/sunrpc/addr.h @@ -0,0 +1,170 @@ +/* + * linux/include/linux/sunrpc/addr.h + * + * Various routines for copying and comparing sockaddrs and for + * converting them to and from presentation format. + */ +#ifndef _LINUX_SUNRPC_ADDR_H +#define _LINUX_SUNRPC_ADDR_H + +#include +#include +#include +#include + +size_t rpc_ntop(const struct sockaddr *, char *, const size_t); +size_t rpc_pton(struct net *, const char *, const size_t, + struct sockaddr *, const size_t); +char * rpc_sockaddr2uaddr(const struct sockaddr *, gfp_t); +size_t rpc_uaddr2sockaddr(struct net *, const char *, const size_t, + struct sockaddr *, const size_t); + +static inline unsigned short rpc_get_port(const struct sockaddr *sap) +{ + switch (sap->sa_family) { + case AF_INET: + return ntohs(((struct sockaddr_in *)sap)->sin_port); + case AF_INET6: + return ntohs(((struct sockaddr_in6 *)sap)->sin6_port); + } + return 0; +} + +static inline void rpc_set_port(struct sockaddr *sap, + const unsigned short port) +{ + switch (sap->sa_family) { + case AF_INET: + ((struct sockaddr_in *)sap)->sin_port = htons(port); + break; + case AF_INET6: + ((struct sockaddr_in6 *)sap)->sin6_port = htons(port); + break; + } +} + +#define IPV6_SCOPE_DELIMITER '%' +#define IPV6_SCOPE_ID_LEN sizeof("%nnnnnnnnnn") + +static inline bool __rpc_cmp_addr4(const struct sockaddr *sap1, + const struct sockaddr *sap2) +{ + const struct sockaddr_in *sin1 = (const struct sockaddr_in *)sap1; + const struct sockaddr_in *sin2 = (const struct sockaddr_in *)sap2; + + return sin1->sin_addr.s_addr == sin2->sin_addr.s_addr; +} + +static inline bool __rpc_copy_addr4(struct sockaddr *dst, + const struct sockaddr *src) +{ + const struct sockaddr_in *ssin = (struct sockaddr_in *) src; + struct sockaddr_in *dsin = (struct sockaddr_in *) dst; + + dsin->sin_family = ssin->sin_family; + dsin->sin_addr.s_addr = ssin->sin_addr.s_addr; + return true; +} + +#if IS_ENABLED(CONFIG_IPV6) +static inline bool __rpc_cmp_addr6(const struct sockaddr *sap1, + const struct sockaddr *sap2) +{ + const struct sockaddr_in6 *sin1 = (const struct sockaddr_in6 *)sap1; + const struct sockaddr_in6 *sin2 = (const struct sockaddr_in6 *)sap2; + + if (!ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr)) + return false; + else if (ipv6_addr_type(&sin1->sin6_addr) & IPV6_ADDR_LINKLOCAL) + return sin1->sin6_scope_id == sin2->sin6_scope_id; + + return true; +} + +static inline bool __rpc_copy_addr6(struct sockaddr *dst, + const struct sockaddr *src) +{ + const struct sockaddr_in6 *ssin6 = (const struct sockaddr_in6 *) src; + struct sockaddr_in6 *dsin6 = (struct sockaddr_in6 *) dst; + + dsin6->sin6_family = ssin6->sin6_family; + dsin6->sin6_addr = ssin6->sin6_addr; + dsin6->sin6_scope_id = ssin6->sin6_scope_id; + return true; +} +#else /* !(IS_ENABLED(CONFIG_IPV6) */ +static inline bool __rpc_cmp_addr6(const struct sockaddr *sap1, + const struct sockaddr *sap2) +{ + return false; +} + +static inline bool __rpc_copy_addr6(struct sockaddr *dst, + const struct sockaddr *src) +{ + return false; +} +#endif /* !(IS_ENABLED(CONFIG_IPV6) */ + +/** + * rpc_cmp_addr - compare the address portion of two sockaddrs. + * @sap1: first sockaddr + * @sap2: second sockaddr + * + * Just compares the family and address portion. Ignores port, but + * compares the scope if it's a link-local address. + * + * Returns true if the addrs are equal, false if they aren't. + */ +static inline bool rpc_cmp_addr(const struct sockaddr *sap1, + const struct sockaddr *sap2) +{ + if (sap1->sa_family == sap2->sa_family) { + switch (sap1->sa_family) { + case AF_INET: + return __rpc_cmp_addr4(sap1, sap2); + case AF_INET6: + return __rpc_cmp_addr6(sap1, sap2); + } + } + return false; +} + +/** + * rpc_copy_addr - copy the address portion of one sockaddr to another + * @dst: destination sockaddr + * @src: source sockaddr + * + * Just copies the address portion and family. Ignores port, scope, etc. + * Caller is responsible for making certain that dst is large enough to hold + * the address in src. Returns true if address family is supported. Returns + * false otherwise. + */ +static inline bool rpc_copy_addr(struct sockaddr *dst, + const struct sockaddr *src) +{ + switch (src->sa_family) { + case AF_INET: + return __rpc_copy_addr4(dst, src); + case AF_INET6: + return __rpc_copy_addr6(dst, src); + } + return false; +} + +/** + * rpc_get_scope_id - return scopeid for a given sockaddr + * @sa: sockaddr to get scopeid from + * + * Returns the value of the sin6_scope_id for AF_INET6 addrs, or 0 if + * not an AF_INET6 address. + */ +static inline u32 rpc_get_scope_id(const struct sockaddr *sa) +{ + if (sa->sa_family != AF_INET6) + return 0; + + return ((struct sockaddr_in6 *) sa)->sin6_scope_id; +} + +#endif /* _LINUX_SUNRPC_ADDR_H */ diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index 6a7c2619a355..4a4abde000cb 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -165,160 +165,5 @@ size_t rpc_peeraddr(struct rpc_clnt *, struct sockaddr *, size_t); const char *rpc_peeraddr2str(struct rpc_clnt *, enum rpc_display_format_t); int rpc_localaddr(struct rpc_clnt *, struct sockaddr *, size_t); -size_t rpc_ntop(const struct sockaddr *, char *, const size_t); -size_t rpc_pton(struct net *, const char *, const size_t, - struct sockaddr *, const size_t); -char * rpc_sockaddr2uaddr(const struct sockaddr *, gfp_t); -size_t rpc_uaddr2sockaddr(struct net *, const char *, const size_t, - struct sockaddr *, const size_t); - -static inline unsigned short rpc_get_port(const struct sockaddr *sap) -{ - switch (sap->sa_family) { - case AF_INET: - return ntohs(((struct sockaddr_in *)sap)->sin_port); - case AF_INET6: - return ntohs(((struct sockaddr_in6 *)sap)->sin6_port); - } - return 0; -} - -static inline void rpc_set_port(struct sockaddr *sap, - const unsigned short port) -{ - switch (sap->sa_family) { - case AF_INET: - ((struct sockaddr_in *)sap)->sin_port = htons(port); - break; - case AF_INET6: - ((struct sockaddr_in6 *)sap)->sin6_port = htons(port); - break; - } -} - -#define IPV6_SCOPE_DELIMITER '%' -#define IPV6_SCOPE_ID_LEN sizeof("%nnnnnnnnnn") - -static inline bool __rpc_cmp_addr4(const struct sockaddr *sap1, - const struct sockaddr *sap2) -{ - const struct sockaddr_in *sin1 = (const struct sockaddr_in *)sap1; - const struct sockaddr_in *sin2 = (const struct sockaddr_in *)sap2; - - return sin1->sin_addr.s_addr == sin2->sin_addr.s_addr; -} - -static inline bool __rpc_copy_addr4(struct sockaddr *dst, - const struct sockaddr *src) -{ - const struct sockaddr_in *ssin = (struct sockaddr_in *) src; - struct sockaddr_in *dsin = (struct sockaddr_in *) dst; - - dsin->sin_family = ssin->sin_family; - dsin->sin_addr.s_addr = ssin->sin_addr.s_addr; - return true; -} - -#if IS_ENABLED(CONFIG_IPV6) -static inline bool __rpc_cmp_addr6(const struct sockaddr *sap1, - const struct sockaddr *sap2) -{ - const struct sockaddr_in6 *sin1 = (const struct sockaddr_in6 *)sap1; - const struct sockaddr_in6 *sin2 = (const struct sockaddr_in6 *)sap2; - - if (!ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr)) - return false; - else if (ipv6_addr_type(&sin1->sin6_addr) & IPV6_ADDR_LINKLOCAL) - return sin1->sin6_scope_id == sin2->sin6_scope_id; - - return true; -} - -static inline bool __rpc_copy_addr6(struct sockaddr *dst, - const struct sockaddr *src) -{ - const struct sockaddr_in6 *ssin6 = (const struct sockaddr_in6 *) src; - struct sockaddr_in6 *dsin6 = (struct sockaddr_in6 *) dst; - - dsin6->sin6_family = ssin6->sin6_family; - dsin6->sin6_addr = ssin6->sin6_addr; - dsin6->sin6_scope_id = ssin6->sin6_scope_id; - return true; -} -#else /* !(IS_ENABLED(CONFIG_IPV6) */ -static inline bool __rpc_cmp_addr6(const struct sockaddr *sap1, - const struct sockaddr *sap2) -{ - return false; -} - -static inline bool __rpc_copy_addr6(struct sockaddr *dst, - const struct sockaddr *src) -{ - return false; -} -#endif /* !(IS_ENABLED(CONFIG_IPV6) */ - -/** - * rpc_cmp_addr - compare the address portion of two sockaddrs. - * @sap1: first sockaddr - * @sap2: second sockaddr - * - * Just compares the family and address portion. Ignores port, but - * compares the scope if it's a link-local address. - * - * Returns true if the addrs are equal, false if they aren't. - */ -static inline bool rpc_cmp_addr(const struct sockaddr *sap1, - const struct sockaddr *sap2) -{ - if (sap1->sa_family == sap2->sa_family) { - switch (sap1->sa_family) { - case AF_INET: - return __rpc_cmp_addr4(sap1, sap2); - case AF_INET6: - return __rpc_cmp_addr6(sap1, sap2); - } - } - return false; -} - -/** - * rpc_copy_addr - copy the address portion of one sockaddr to another - * @dst: destination sockaddr - * @src: source sockaddr - * - * Just copies the address portion and family. Ignores port, scope, etc. - * Caller is responsible for making certain that dst is large enough to hold - * the address in src. Returns true if address family is supported. Returns - * false otherwise. - */ -static inline bool rpc_copy_addr(struct sockaddr *dst, - const struct sockaddr *src) -{ - switch (src->sa_family) { - case AF_INET: - return __rpc_copy_addr4(dst, src); - case AF_INET6: - return __rpc_copy_addr6(dst, src); - } - return false; -} - -/** - * rpc_get_scope_id - return scopeid for a given sockaddr - * @sa: sockaddr to get scopeid from - * - * Returns the value of the sin6_scope_id for AF_INET6 addrs, or 0 if - * not an AF_INET6 address. - */ -static inline u32 rpc_get_scope_id(const struct sockaddr *sa) -{ - if (sa->sa_family != AF_INET6) - return 0; - - return ((struct sockaddr_in6 *) sa)->sin6_scope_id; -} - #endif /* __KERNEL__ */ #endif /* _LINUX_SUNRPC_CLNT_H */ -- cgit v1.2.3 From de0b65ca55dc62b6b477f6e02088df2281da7b51 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 4 Feb 2013 12:51:17 -0500 Subject: sunrpc: fix comment in struct xdr_buf definition ...these pages aren't necessarily contiguous. Signed-off-by: Jeff Layton Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/xdr.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h index 63988990bd36..224d06047e45 100644 --- a/include/linux/sunrpc/xdr.h +++ b/include/linux/sunrpc/xdr.h @@ -56,7 +56,7 @@ struct xdr_buf { struct kvec head[1], /* RPC header + non-page data */ tail[1]; /* Appended after page data */ - struct page ** pages; /* Array of contiguous pages */ + struct page ** pages; /* Array of pages */ unsigned int page_base, /* Start of page data */ page_len, /* Length of page data */ flags; /* Flags for data disposition */ -- cgit v1.2.3 From f26402e81743d06b938a388925904bd47763277a Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Thu, 31 Jan 2013 12:01:53 -0700 Subject: tty: of_serial: unexport tegra_serial_handle_break Tegra is only booted through device-tree now; there are no board files left that use this function. Hence, don't export it. Move the static inline definition into of_serial.c, so we can delete of_serial.h too. Signed-off-by: Stephen Warren Signed-off-by: Greg Kroah-Hartman --- include/linux/of_serial.h | 17 ----------------- 1 file changed, 17 deletions(-) delete mode 100644 include/linux/of_serial.h (limited to 'include/linux') diff --git a/include/linux/of_serial.h b/include/linux/of_serial.h deleted file mode 100644 index 4a73ed80b4c0..000000000000 --- a/include/linux/of_serial.h +++ /dev/null @@ -1,17 +0,0 @@ -#ifndef __LINUX_OF_SERIAL_H -#define __LINUX_OF_SERIAL_H - -/* - * FIXME remove this file when tegra finishes conversion to open firmware, - * expectation is that all quirks will then be self-contained in - * drivers/tty/serial/of_serial.c. - */ -#ifdef CONFIG_ARCH_TEGRA -extern void tegra_serial_handle_break(struct uart_port *port); -#else -static inline void tegra_serial_handle_break(struct uart_port *port) -{ -} -#endif - -#endif /* __LINUX_OF_SERIAL */ -- cgit v1.2.3 From ca2eb5679f8ddffff60156af42595df44a315ef0 Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Tue, 5 Feb 2013 07:25:17 +0000 Subject: tcp: remove Appropriate Byte Count support TCP Appropriate Byte Count was added by me, but later disabled. There is no point in maintaining it since it is a potential source of bugs and Linux already implements other better window protection heuristics. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- include/linux/tcp.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 4e1d2283e3cc..6d0d46138ae8 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -246,7 +246,6 @@ struct tcp_sock { u32 sacked_out; /* SACK'd packets */ u32 fackets_out; /* FACK'd packets */ u32 tso_deferred; - u32 bytes_acked; /* Appropriate Byte Counting - RFC3465 */ /* from STCP, retrans queue hinting */ struct sk_buff* lost_skb_hint; -- cgit v1.2.3 From e6e238c38bd4d42d5e2cddb2165e1a46e0fb1200 Mon Sep 17 00:00:00 2001 From: Amit Daniel Kachhap Date: Mon, 4 Feb 2013 00:30:15 +0000 Subject: thermal: sysfs: Add a new sysfs node emul_temp for thermal emulation This patch adds support to set the emulated temperature method in thermal zone (sensor). After setting this feature thermal zone may report this temperature and not the actual temperature. The emulation implementation may be based on sensor capability through platform specific handler or pure software emulation if no platform handler defined. This is useful in debugging different temperature threshold and its associated cooling action. Critical threshold's cannot be emulated. Writing 0 on this node should disable emulation. Signed-off-by: Amit Daniel Kachhap Acked-by: Kukjin Kim Signed-off-by: Zhang Rui --- include/linux/thermal.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 9b78f8c6f773..f0bd7f90a90d 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -123,6 +123,7 @@ struct thermal_zone_device_ops { int (*set_trip_hyst) (struct thermal_zone_device *, int, unsigned long); int (*get_crit_temp) (struct thermal_zone_device *, unsigned long *); + int (*set_emul_temp) (struct thermal_zone_device *, unsigned long); int (*get_trend) (struct thermal_zone_device *, int, enum thermal_trend *); int (*notify) (struct thermal_zone_device *, int, @@ -165,6 +166,7 @@ struct thermal_zone_device { int polling_delay; int temperature; int last_temperature; + int emul_temperature; int passive; unsigned int forced_passive; const struct thermal_zone_device_ops *ops; -- cgit v1.2.3 From a8b8a88a9e3042d41326c854272c881664acba1c Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 29 Jan 2013 14:36:31 +0100 Subject: iommu: Make sure DOMAIN_ATTR_MAX is really the maximum Move it to the end of the list. Signed-off-by: Joerg Roedel --- include/linux/iommu.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/iommu.h b/include/linux/iommu.h index f3b99e1c1042..7e6ce7260b1c 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -58,8 +58,8 @@ struct iommu_domain { #define IOMMU_CAP_INTR_REMAP 0x2 /* isolates device intrs */ enum iommu_attr { - DOMAIN_ATTR_MAX, DOMAIN_ATTR_GEOMETRY, + DOMAIN_ATTR_MAX, }; #ifdef CONFIG_IOMMU_API -- cgit v1.2.3 From d2e121601619631517409cba34e50db3cbff5852 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 29 Jan 2013 13:49:04 +0100 Subject: iommu: Implement DOMAIN_ATTR_PAGING attribute This attribute of a domain can be queried to find out if the domain supports setting up page-tables using the iommu_map() and iommu_unmap() functions. Signed-off-by: Joerg Roedel --- include/linux/iommu.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 7e6ce7260b1c..26066f54a849 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -59,6 +59,7 @@ struct iommu_domain { enum iommu_attr { DOMAIN_ATTR_GEOMETRY, + DOMAIN_ATTR_PAGING, DOMAIN_ATTR_MAX, }; -- cgit v1.2.3 From d7787d579cbef9f8079104759a2259fc916c688c Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 29 Jan 2013 14:26:20 +0100 Subject: iommu: Add domain window handling functions Add the iommu_domain_window_enable() and iommu_domain_window_disable() functions to the IOMMU-API. These functions will be used to setup domains that are based on subwindows and not on paging. Signed-off-by: Joerg Roedel --- include/linux/iommu.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'include/linux') diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 26066f54a849..5ea3d7250917 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -101,6 +101,12 @@ struct iommu_ops { enum iommu_attr attr, void *data); int (*domain_set_attr)(struct iommu_domain *domain, enum iommu_attr attr, void *data); + + /* Window handling functions */ + int (*domain_window_enable)(struct iommu_domain *domain, u32 wnd_nr, + phys_addr_t paddr, u64 size); + void (*domain_window_disable)(struct iommu_domain *domain, u32 wnd_nr); + unsigned long pgsize_bitmap; }; @@ -158,6 +164,10 @@ extern int iommu_domain_get_attr(struct iommu_domain *domain, enum iommu_attr, extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr, void *data); +/* Window handling function prototypes */ +extern int iommu_domain_window_enable(struct iommu_domain *domain, u32 wnd_nr, + phys_addr_t offset, u64 size); +extern void iommu_domain_window_disable(struct iommu_domain *domain, u32 wnd_nr); /** * report_iommu_fault() - report about an IOMMU fault to the IOMMU framework * @domain: the iommu domain where the fault has happened @@ -240,6 +250,18 @@ static inline int iommu_unmap(struct iommu_domain *domain, unsigned long iova, return -ENODEV; } +static inline int iommu_domain_window_enable(struct iommu_domain *domain, + u32 wnd_nr, phys_addr_t paddr, + u64 size) +{ + return -ENODEV; +} + +static inline void iommu_domain_window_disable(struct iommu_domain *domain, + u32 wnd_nr) +{ +} + static inline phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain, unsigned long iova) { -- cgit v1.2.3 From 693567125bde1966a095267a9d8ca1b8d40f59ee Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Mon, 4 Feb 2013 14:00:01 +0100 Subject: iommu: Add DOMAIN_ATTR_WINDOWS domain attribute This attribute can be used to set and get the number of subwindows on IOMMUs that are window-based. Signed-off-by: Joerg Roedel --- include/linux/iommu.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 5ea3d7250917..ba3b8a98a049 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -60,6 +60,7 @@ struct iommu_domain { enum iommu_attr { DOMAIN_ATTR_GEOMETRY, DOMAIN_ATTR_PAGING, + DOMAIN_ATTR_WINDOWS, DOMAIN_ATTR_MAX, }; @@ -106,6 +107,10 @@ struct iommu_ops { int (*domain_window_enable)(struct iommu_domain *domain, u32 wnd_nr, phys_addr_t paddr, u64 size); void (*domain_window_disable)(struct iommu_domain *domain, u32 wnd_nr); + /* Set the numer of window per domain */ + int (*domain_set_windows)(struct iommu_domain *domain, u32 w_count); + /* Get the numer of window per domain */ + u32 (*domain_get_windows)(struct iommu_domain *domain); unsigned long pgsize_bitmap; }; -- cgit v1.2.3 From c2c460f7c148aa1a59630f61dac2481f1efb4f4e Mon Sep 17 00:00:00 2001 From: Hideki EIRAKU Date: Mon, 21 Jan 2013 19:54:26 +0900 Subject: iommu/shmobile: Add iommu driver for Renesas IPMMU modules This is the Renesas IPMMU driver and IOMMU API implementation. The IPMMU module supports the MMU function and the PMB function. The MMU function provides address translation by pagetable compatible with ARMv6. The PMB function provides address translation including tile-linear translation. This patch implements the MMU function. The iommu driver does not register a platform driver directly because: - the register space of the MMU function and the PMB function have a common register (used for settings flush), so they should ideally have a way to appropriately share this register. - the MMU function uses the IOMMU API while the PMB function does not. - the two functions may be used independently. Signed-off-by: Hideki EIRAKU Signed-off-by: Joerg Roedel --- include/linux/platform_data/sh_ipmmu.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 include/linux/platform_data/sh_ipmmu.h (limited to 'include/linux') diff --git a/include/linux/platform_data/sh_ipmmu.h b/include/linux/platform_data/sh_ipmmu.h new file mode 100644 index 000000000000..39f7405cdac5 --- /dev/null +++ b/include/linux/platform_data/sh_ipmmu.h @@ -0,0 +1,18 @@ +/* sh_ipmmu.h + * + * Copyright (C) 2012 Hideki EIRAKU + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + */ + +#ifndef __SH_IPMMU_H__ +#define __SH_IPMMU_H__ + +struct shmobile_ipmmu_platform_data { + const char * const *dev_names; + unsigned int num_dev_names; +}; + +#endif /* __SH_IPMMU_H__ */ -- cgit v1.2.3 From c0a05bf0182efdf7cd1fd8aa327e7a602360b67e Mon Sep 17 00:00:00 2001 From: Steffen Trumtrar Date: Tue, 18 Dec 2012 11:32:03 +0100 Subject: of: add 'const' to of_node_full_name parameter As the function just returns the np->full_name or the string "", the passed device_node pointer is not changed in any way. The passed parameter can therefore be a const pointer. Also, fix the following error from checkpatch.pl: ERROR: "foo* bar" should be "foo *bar" +static inline const char* of_node_full_name(const struct device_node *np) Signed-off-by: Steffen Trumtrar Signed-off-by: Grant Likely --- include/linux/of.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index 5ebcc5c8e423..1e0d0c1bfb5e 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -160,7 +160,7 @@ static inline unsigned long of_read_ulong(const __be32 *cell, int size) #define OF_BAD_ADDR ((u64)-1) -static inline const char* of_node_full_name(struct device_node *np) +static inline const char *of_node_full_name(const struct device_node *np) { return np ? np->full_name : ""; } -- cgit v1.2.3 From 5372d2d71c46e5649e5d2edd4514adcd6fe7a085 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Fri, 12 Oct 2012 23:01:58 -0700 Subject: hwmon: Driver for Maxim MAX6697 and compatibles Add support for MAX6581, MAX6602, MAX6622, MAX6636, MAX6689, MAX6693, MAX6694, MAX6697, MAX6698, and MAX6699 temperature sensors Signed-off-by: Guenter Roeck Reviewed-by: Jean Delvare --- include/linux/platform_data/max6697.h | 36 +++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 include/linux/platform_data/max6697.h (limited to 'include/linux') diff --git a/include/linux/platform_data/max6697.h b/include/linux/platform_data/max6697.h new file mode 100644 index 000000000000..ed9d3b3daf02 --- /dev/null +++ b/include/linux/platform_data/max6697.h @@ -0,0 +1,36 @@ +/* + * max6697.h + * Copyright (c) 2012 Guenter Roeck + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef MAX6697_H +#define MAX6697_H + +#include + +/* + * For all bit masks: + * bit 0: local temperature + * bit 1..7: remote temperatures + */ +struct max6697_platform_data { + bool smbus_timeout_disable; /* set to disable SMBus timeouts */ + bool extended_range_enable; /* set to enable extended temp range */ + bool beta_compensation; /* set to enable beta compensation */ + u8 alert_mask; /* set bit to 1 to disable alert */ + u8 over_temperature_mask; /* set bit to 1 to disable */ + u8 resistance_cancellation; /* set bit to 0 to disable + * bit mask for MAX6581, + * boolean for other chips + */ + u8 ideality_mask; /* set bit to 0 to disable */ + u8 ideality_value; /* transistor ideality as per + * MAX6581 datasheet + */ +}; + +#endif /* MAX6697_H */ -- cgit v1.2.3 From 5aa57f0a655276f62683c0cc714cd6328d98e08a Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Mon, 4 Feb 2013 20:26:00 +0000 Subject: iio: Update iio_channel_get API to use consumer device pointer as argument For iio_channel_get to work with OF based configurations, it needs the consumer device pointer instead of the consumer device name as argument. Signed-off-by: Guenter Roeck Acked-by: Anton Vorontsov Acked-by: Chanwoo Choi Signed-off-by: Jonathan Cameron --- include/linux/iio/consumer.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h index a85787ac66ab..833926c91aa8 100644 --- a/include/linux/iio/consumer.h +++ b/include/linux/iio/consumer.h @@ -31,14 +31,15 @@ struct iio_channel { /** * iio_channel_get() - get description of all that is needed to access channel. - * @name: Unique name of the device as provided in the iio_map + * @dev: Pointer to consumer device. Device name must match + * the name of the device as provided in the iio_map * with which the desired provider to consumer mapping * was registered. * @consumer_channel: Unique name to identify the channel on the consumer * side. This typically describes the channels use within * the consumer. E.g. 'battery_voltage' */ -struct iio_channel *iio_channel_get(const char *name, +struct iio_channel *iio_channel_get(struct device *dev, const char *consumer_channel); /** -- cgit v1.2.3 From fa1dfe4abe7f3e1d28ee80753acd9a8a87dbacd7 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Wed, 6 Feb 2013 18:58:49 +0530 Subject: ARM: OMAP2: MUSB: Specify omap4 has mailbox Added has_mailbox to the musb platform data to specify that omap uses an external mailbox (in control module) to communicate with the musb core during device connect and disconnect. Signed-off-by: Kishon Vijay Abraham I Acked-by: Tony Lindgren Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/musb.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/musb.h b/include/linux/usb/musb.h index eb505250940a..053c26841cc3 100644 --- a/include/linux/usb/musb.h +++ b/include/linux/usb/musb.h @@ -99,6 +99,8 @@ struct musb_hdrc_platform_data { /* MUSB_HOST, MUSB_PERIPHERAL, or MUSB_OTG */ u8 mode; + u8 has_mailbox:1; + /* for clk_get() */ const char *clock; -- cgit v1.2.3 From c8ce60bbed39a8d884837ed6e53dc32f7f86e40f Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 6 Feb 2013 18:58:51 +0530 Subject: usb: omap_control_usb: fix compile warning When CONFIG_OMAP_CONTROL_USB isn't enabled, there's a compile warning stating that a particular function isn't a prototype. Fix it. Signed-off-by: Felipe Balbi Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/omap_control_usb.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/usb/omap_control_usb.h b/include/linux/usb/omap_control_usb.h index f306db7149ca..27b5b8c931b0 100644 --- a/include/linux/usb/omap_control_usb.h +++ b/include/linux/usb/omap_control_usb.h @@ -70,7 +70,7 @@ extern void omap_control_usb3_phy_power(struct device *dev, bool on); extern void omap_control_usb_set_mode(struct device *dev, enum omap_control_usb_mode mode); #else -static inline struct device *omap_get_control_dev() +static inline struct device *omap_get_control_dev(void) { return ERR_PTR(-ENODEV); } -- cgit v1.2.3 From 9f3b795a626ee79574595e06d1437fe0c7d51d29 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Date: Fri, 1 Feb 2013 20:40:17 +0100 Subject: driver-core: constify data for class_find_device() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit All in-kernel users of class_find_device() don't really need mutable data for match callback. In two places (kernel/power/suspend_test.c, drivers/scsi/osd/osd_uld.c) this patch changes match callbacks to use const search data. The const is propagated to rtc_class_open() and power_supply_get_by_name() parameters. Note that there's a dev reference leak in suspend_test.c that's not touched in this patch. Signed-off-by: Michał Mirosław Acked-by: Grant Likely Signed-off-by: Greg Kroah-Hartman --- include/linux/device.h | 4 ++-- include/linux/power_supply.h | 2 +- include/linux/rtc.h | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index 251f33b21ef9..a089676084a5 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -395,8 +395,8 @@ extern int class_for_each_device(struct class *class, struct device *start, void *data, int (*fn)(struct device *dev, void *data)); extern struct device *class_find_device(struct class *class, - struct device *start, void *data, - int (*match)(struct device *, void *)); + struct device *start, const void *data, + int (*match)(struct device *, const void *)); struct class_attribute { struct attribute attr; diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 1f0ab90aff00..86ecaa679ded 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -224,7 +224,7 @@ struct power_supply_info { int use_for_apm; }; -extern struct power_supply *power_supply_get_by_name(char *name); +extern struct power_supply *power_supply_get_by_name(const char *name); extern void power_supply_changed(struct power_supply *psy); extern int power_supply_am_i_supplied(struct power_supply *psy); extern int power_supply_set_battery_charged(struct power_supply *psy); diff --git a/include/linux/rtc.h b/include/linux/rtc.h index 9531845c419f..445fe6e7c629 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -148,7 +148,7 @@ extern int rtc_initialize_alarm(struct rtc_device *rtc, extern void rtc_update_irq(struct rtc_device *rtc, unsigned long num, unsigned long events); -extern struct rtc_device *rtc_class_open(char *name); +extern struct rtc_device *rtc_class_open(const char *name); extern void rtc_class_close(struct rtc_device *rtc); extern int rtc_irq_register(struct rtc_device *rtc, -- cgit v1.2.3 From ca99ca14c95ae49fb4c9cd3abf5f84d11a7e8a61 Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Tue, 5 Feb 2013 08:05:43 +0000 Subject: netpoll: protect napi_poll and poll_controller during dev_[open|close] Ivan Vercera was recently backporting commit 9c13cb8bb477a83b9a3c9e5a5478a4e21294a760 to a RHEL kernel, and I noticed that, while this patch protects the tg3 driver from having its ndo_poll_controller routine called during device initalization, it does nothing for the driver during shutdown. I.e. it would be entirely possible to have the ndo_poll_controller method (or subsequently the ndo_poll) routine called for a driver in the netpoll path on CPU A while in parallel on CPU B, the ndo_close or ndo_open routine could be called. Given that the two latter routines tend to initizlize and free many data structures that the former two rely on, the result can easily be data corruption or various other crashes. Furthermore, it seems that this is potentially a problem with all net drivers that support netpoll, and so this should ideally be fixed in a common path. As Ben H Pointed out to me, we can't preform dev_open/dev_close in atomic context, so I've come up with this solution. We can use a mutex to sleep in open/close paths and just do a mutex_trylock in the napi poll path and abandon the poll attempt if we're locked, as we'll just retry the poll on the next send anyway. I've tested this here by flooding netconsole with messages on a system whos nic driver I modfied to periodically return NETDEV_TX_BUSY, so that the netpoll tx workqueue would be forced to send frames and poll the device. While this was going on I rapidly ifdown/up'ed the interface and watched for any problems. I've not found any. Signed-off-by: Neil Horman CC: Ivan Vecera CC: "David S. Miller" CC: Ben Hutchings CC: Francois Romieu CC: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/netpoll.h | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netpoll.h b/include/linux/netpoll.h index f54c3bb6a22b..ab856d507b7e 100644 --- a/include/linux/netpoll.h +++ b/include/linux/netpoll.h @@ -38,8 +38,9 @@ struct netpoll { struct netpoll_info { atomic_t refcnt; - int rx_flags; + unsigned long rx_flags; spinlock_t rx_lock; + struct mutex dev_lock; struct list_head rx_np; /* netpolls that registered an rx_hook */ struct sk_buff_head neigh_tx; /* list of neigh requests to reply to */ @@ -51,6 +52,14 @@ struct netpoll_info { struct rcu_head rcu; }; +#ifdef CONFIG_NETPOLL +extern int netpoll_rx_disable(struct net_device *dev); +extern void netpoll_rx_enable(struct net_device *dev); +#else +static inline int netpoll_rx_disable(struct net_device *dev) { return 0; } +static inline void netpoll_rx_enable(struct net_device *dev) { return; } +#endif + void netpoll_send_udp(struct netpoll *np, const char *msg, int len); void netpoll_print_options(struct netpoll *np); int netpoll_parse_options(struct netpoll *np, char *opt); -- cgit v1.2.3 From 3b72c2fe0c6bbec42ed7f899931daef227b80322 Mon Sep 17 00:00:00 2001 From: Mugunthan V N Date: Tue, 5 Feb 2013 08:26:48 +0000 Subject: drivers: net:ethernet: cpsw: add support for VLAN adding support for VLAN interface for cpsw. CPSW VLAN Capability * Can filter VLAN packets in Hardware Signed-off-by: Mugunthan V N Signed-off-by: David S. Miller --- include/linux/platform_data/cpsw.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/cpsw.h b/include/linux/platform_data/cpsw.h index 24368a2e8b87..e962cfd552e3 100644 --- a/include/linux/platform_data/cpsw.h +++ b/include/linux/platform_data/cpsw.h @@ -35,6 +35,7 @@ struct cpsw_platform_data { u32 bd_ram_size; /*buffer descriptor ram size */ u32 rx_descs; /* Number of Rx Descriptios */ u32 mac_control; /* Mac control register */ + u16 default_vlan; /* Def VLAN for ALE lookup in VLAN aware mode*/ }; #endif /* __CPSW_H__ */ -- cgit v1.2.3 From e185483e6b84c127d0b1c890b6b703701ae52d35 Mon Sep 17 00:00:00 2001 From: Flavio Leitner Date: Tue, 5 Feb 2013 09:30:55 +0000 Subject: team: allow userspace to take control over carrier Some modes don't require any special carrier handling so in these cases, the kernel can control the carrier as for any other interface. However, some other modes, e.g. lacp, requires more than just that, so userspace needs to control the carrier itself. The daemon today is ready to control it, but the kernel still can change it based on events. This fix so that either kernel or userspace is controlling the carrier. Signed-off-by: Flavio Leitner Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- include/linux/if_team.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/if_team.h b/include/linux/if_team.h index 0245def2aa93..4648d8021244 100644 --- a/include/linux/if_team.h +++ b/include/linux/if_team.h @@ -186,6 +186,7 @@ struct team { const struct team_mode *mode; struct team_mode_ops ops; + bool user_carrier_enabled; bool queue_override_enabled; struct list_head *qom_lists; /* array of queue override mapping lists */ long mode_priv[TEAM_MODE_PRIV_LONGS]; -- cgit v1.2.3 From 12b0004d1d1e2a9aa667412d479041e403bcafae Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Tue, 5 Feb 2013 16:36:38 +0000 Subject: net: adjust skb_gso_segment() for calling in rx path skb_gso_segment() is almost always called in tx path, except for openvswitch. It calls this function when it receives the packet and tries to queue it to user-space. In this special case, the ->ip_summed check inside skb_gso_segment() is no longer true, as ->ip_summed value has different meanings on rx path. This patch adjusts skb_gso_segment() so that we can at least avoid such warnings on checksum. Cc: Jesse Gross Cc: David S. Miller Signed-off-by: Cong Wang Signed-off-by: David S. Miller --- include/linux/netdevice.h | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 85b0949d9946..ab2774eb49e8 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2662,8 +2662,15 @@ extern int netdev_master_upper_dev_link(struct net_device *dev, extern void netdev_upper_dev_unlink(struct net_device *dev, struct net_device *upper_dev); extern int skb_checksum_help(struct sk_buff *skb); -extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, - netdev_features_t features); +extern struct sk_buff *__skb_gso_segment(struct sk_buff *skb, + netdev_features_t features, bool tx_path); + +static inline +struct sk_buff *skb_gso_segment(struct sk_buff *skb, netdev_features_t features) +{ + return __skb_gso_segment(skb, features, true); +} + #ifdef CONFIG_BUG extern void netdev_rx_csum_fault(struct net_device *dev); #else -- cgit v1.2.3 From cd431e738509e74726055390c9e5e81e8e7e03ec Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 5 Feb 2013 20:22:50 +0000 Subject: macvlan: add multicast filter Setting up IPv6 addresses on configurations with many macvlans is not really working, as many multicast messages are dropped. Add a multicast filter to macvlan to reduce the amount of cloned skbs and overhead. Successfully tested with 1024 macvlans on one ethernet device. Signed-off-by: Eric Dumazet Cc: Ben Greear Signed-off-by: David S. Miller --- include/linux/if_macvlan.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/if_macvlan.h b/include/linux/if_macvlan.h index f65e8d250f7e..84dde1dd1da4 100644 --- a/include/linux/if_macvlan.h +++ b/include/linux/if_macvlan.h @@ -52,6 +52,9 @@ struct macvlan_pcpu_stats { */ #define MAX_MACVTAP_QUEUES (NR_CPUS < 16 ? NR_CPUS : 16) +#define MACVLAN_MC_FILTER_BITS 8 +#define MACVLAN_MC_FILTER_SZ (1 << MACVLAN_MC_FILTER_BITS) + struct macvlan_dev { struct net_device *dev; struct list_head list; @@ -59,6 +62,9 @@ struct macvlan_dev { struct macvlan_port *port; struct net_device *lowerdev; struct macvlan_pcpu_stats __percpu *pcpu_stats; + + DECLARE_BITMAP(mc_filter, MACVLAN_MC_FILTER_SZ); + enum macvlan_mode mode; u16 flags; int (*receive)(struct sk_buff *skb); -- cgit v1.2.3 From c93d08fa75020835741c7b1d0523ff854e8acde1 Mon Sep 17 00:00:00 2001 From: "Milo(Woogyom) Kim" Date: Tue, 5 Feb 2013 18:01:23 +0900 Subject: leds-lp55xx: add new common driver for lp5521/5523 This patch supports basic common driver code for LP5521, LP5523/55231 devices. ( Driver Structure Data ) lp55xx_led and lp55xx_chip In lp55xx common driver, two different data structure is used. o lp55xx_led control multi output LED channels such as led current, channel index. o lp55xx_chip general chip control such like the I2C and platform data. For example, LP5521 has maximum 3 LED channels. LP5523/55231 has 9 output channels. lp55xx_chip for LP5521 ... lp55xx_led #1 lp55xx_led #2 lp55xx_led #3 lp55xx_chip for LP5523 ... lp55xx_led #1 lp55xx_led #2 . . lp55xx_led #9 ( Platform Data ) LP5521 and LP5523/55231 have own specific platform data. However, this data can be handled with just one platform data structure. The lp55xx platform data is declared in the header. This structure is derived from leds-lp5521.h and leds-lp5523.h Signed-off-by: Milo(Woogyom) Kim Signed-off-by: Bryan Wu --- include/linux/platform_data/leds-lp55xx.h | 87 +++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) create mode 100644 include/linux/platform_data/leds-lp55xx.h (limited to 'include/linux') diff --git a/include/linux/platform_data/leds-lp55xx.h b/include/linux/platform_data/leds-lp55xx.h new file mode 100644 index 000000000000..1509570d5a3f --- /dev/null +++ b/include/linux/platform_data/leds-lp55xx.h @@ -0,0 +1,87 @@ +/* + * LP55XX Platform Data Header + * + * Copyright (C) 2012 Texas Instruments + * + * Author: Milo(Woogyom) Kim + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * Derived from leds-lp5521.h, leds-lp5523.h + */ + +#ifndef _LEDS_LP55XX_H +#define _LEDS_LP55XX_H + +/* Clock configuration */ +#define LP55XX_CLOCK_AUTO 0 +#define LP55XX_CLOCK_INT 1 +#define LP55XX_CLOCK_EXT 2 + +/* Bits in LP5521 CONFIG register. 'update_config' in lp55xx_platform_data */ +#define LP5521_PWM_HF 0x40 /* PWM: 0 = 256Hz, 1 = 558Hz */ +#define LP5521_PWRSAVE_EN 0x20 /* 1 = Power save mode */ +#define LP5521_CP_MODE_OFF 0 /* Charge pump (CP) off */ +#define LP5521_CP_MODE_BYPASS 8 /* CP forced to bypass mode */ +#define LP5521_CP_MODE_1X5 0x10 /* CP forced to 1.5x mode */ +#define LP5521_CP_MODE_AUTO 0x18 /* Automatic mode selection */ +#define LP5521_R_TO_BATT 4 /* R out: 0 = CP, 1 = Vbat */ +#define LP5521_CLK_SRC_EXT 0 /* Ext-clk source (CLK_32K) */ +#define LP5521_CLK_INT 1 /* Internal clock */ +#define LP5521_CLK_AUTO 2 /* Automatic clock selection */ + +struct lp55xx_led_config { + const char *name; + u8 chan_nr; + u8 led_current; /* mA x10, 0 if led is not connected */ + u8 max_current; +}; + +struct lp55xx_predef_pattern { + u8 *r; + u8 *g; + u8 *b; + u8 size_r; + u8 size_g; + u8 size_b; +}; + +/* + * struct lp55xx_platform_data + * @led_config : Configurable led class device + * @num_channels : Number of LED channels + * @label : Used for naming LEDs + * @clock_mode : Input clock mode. LP55XX_CLOCK_AUTO or _INT or _EXT + * @setup_resources : Platform specific function before enabling the chip + * @release_resources : Platform specific function after disabling the chip + * @enable : EN pin control by platform side + * @patterns : Predefined pattern data for RGB channels + * @num_patterns : Number of patterns + * @update_config : Value of CONFIG register + */ +struct lp55xx_platform_data { + + /* LED channel configuration */ + struct lp55xx_led_config *led_config; + u8 num_channels; + const char *label; + + /* Clock configuration */ + u8 clock_mode; + + /* Platform specific functions */ + int (*setup_resources)(void); + void (*release_resources)(void); + void (*enable)(bool state); + + /* Predefined pattern data */ + struct lp55xx_predef_pattern *patterns; + unsigned int num_patterns; + + /* _CONFIG register */ + u8 update_config; +}; + +#endif /* _LEDS_LP55XX_H */ -- cgit v1.2.3 From df4094d24e6328824a2dfe8e6f641bff9a484d68 Mon Sep 17 00:00:00 2001 From: "Milo(Woogyom) Kim" Date: Tue, 5 Feb 2013 19:26:59 +0900 Subject: leds-lp5521/5523: use new lp55xx common header The LP55xx common driver provides a new header, leds-lp55xx.h. This driver enables removing duplicate code for both drivers and making coherent driver structure. LP5521 and LP5523/55231 platform data were merged into one common file. Therefore, the LP5521/5523 platform code need to be fixed. This patch has been already acked. For ux500: https://lkml.org/lkml/2012/10/11/417 Acked-by: Linus Walleij For omap: https://lkml.org/lkml/2012/10/11/334 Acked-by: Tony Lindgren Signed-off-by: Milo(Woogyom) Kim Signed-off-by: Bryan Wu --- include/linux/leds-lp5521.h | 73 --------------------------------------------- include/linux/leds-lp5523.h | 49 ------------------------------ 2 files changed, 122 deletions(-) delete mode 100644 include/linux/leds-lp5521.h delete mode 100644 include/linux/leds-lp5523.h (limited to 'include/linux') diff --git a/include/linux/leds-lp5521.h b/include/linux/leds-lp5521.h deleted file mode 100644 index 3f071ec019b2..000000000000 --- a/include/linux/leds-lp5521.h +++ /dev/null @@ -1,73 +0,0 @@ -/* - * LP5521 LED chip driver. - * - * Copyright (C) 2010 Nokia Corporation - * - * Contact: Samu Onkalo - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA - */ - -#ifndef __LINUX_LP5521_H -#define __LINUX_LP5521_H - -/* See Documentation/leds/leds-lp5521.txt */ - -struct lp5521_led_config { - char *name; - u8 chan_nr; - u8 led_current; /* mA x10, 0 if led is not connected */ - u8 max_current; -}; - -struct lp5521_led_pattern { - u8 *r; - u8 *g; - u8 *b; - u8 size_r; - u8 size_g; - u8 size_b; -}; - -#define LP5521_CLOCK_AUTO 0 -#define LP5521_CLOCK_INT 1 -#define LP5521_CLOCK_EXT 2 - -/* Bits in CONFIG register */ -#define LP5521_PWM_HF 0x40 /* PWM: 0 = 256Hz, 1 = 558Hz */ -#define LP5521_PWRSAVE_EN 0x20 /* 1 = Power save mode */ -#define LP5521_CP_MODE_OFF 0 /* Charge pump (CP) off */ -#define LP5521_CP_MODE_BYPASS 8 /* CP forced to bypass mode */ -#define LP5521_CP_MODE_1X5 0x10 /* CP forced to 1.5x mode */ -#define LP5521_CP_MODE_AUTO 0x18 /* Automatic mode selection */ -#define LP5521_R_TO_BATT 4 /* R out: 0 = CP, 1 = Vbat */ -#define LP5521_CLK_SRC_EXT 0 /* Ext-clk source (CLK_32K) */ -#define LP5521_CLK_INT 1 /* Internal clock */ -#define LP5521_CLK_AUTO 2 /* Automatic clock selection */ - -struct lp5521_platform_data { - struct lp5521_led_config *led_config; - u8 num_channels; - u8 clock_mode; - int (*setup_resources)(void); - void (*release_resources)(void); - void (*enable)(bool state); - const char *label; - u8 update_config; - struct lp5521_led_pattern *patterns; - int num_patterns; -}; - -#endif /* __LINUX_LP5521_H */ diff --git a/include/linux/leds-lp5523.h b/include/linux/leds-lp5523.h deleted file mode 100644 index 727877fb406d..000000000000 --- a/include/linux/leds-lp5523.h +++ /dev/null @@ -1,49 +0,0 @@ -/* - * LP5523 LED Driver - * - * Copyright (C) 2010 Nokia Corporation - * - * Contact: Samu Onkalo - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA - */ - -#ifndef __LINUX_LP5523_H -#define __LINUX_LP5523_H - -/* See Documentation/leds/leds-lp5523.txt */ - -struct lp5523_led_config { - const char *name; - u8 chan_nr; - u8 led_current; /* mA x10, 0 if led is not connected */ - u8 max_current; -}; - -#define LP5523_CLOCK_AUTO 0 -#define LP5523_CLOCK_INT 1 -#define LP5523_CLOCK_EXT 2 - -struct lp5523_platform_data { - struct lp5523_led_config *led_config; - u8 num_channels; - u8 clock_mode; - int (*setup_resources)(void); - void (*release_resources)(void); - void (*enable)(bool state); - const char *label; -}; - -#endif /* __LINUX_LP5523_H */ -- cgit v1.2.3 From 6be195886ac26abe0194ed1bc7a9224f8a97c310 Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Wed, 6 Feb 2013 18:04:53 -0800 Subject: workqueue: replace WORK_CPU_NONE/LAST with WORK_CPU_END Now that workqueue has moved away from gcwqs, workqueue no longer has the need to have a CPU identifier indicating "no cpu associated" - we now use WORK_OFFQ_POOL_NONE instead - and most uses of WORK_CPU_NONE are gone. The only left usage is as the end marker for for_each_*wq*() iterators, where the name WORK_CPU_NONE is confusing w/o actual WORK_CPU_NONE usages. Similarly, WORK_CPU_LAST which equals WORK_CPU_NONE no longer makes sense. Replace both WORK_CPU_NONE and LAST with WORK_CPU_END. This patch doesn't introduce any functional difference. tj: s/WORK_CPU_LAST/WORK_CPU_END/ and rewrote the description. Signed-off-by: Lai Jiangshan Signed-off-by: Tejun Heo --- include/linux/workqueue.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h index a94e4e84e7b1..426c39c2aaa4 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -57,8 +57,7 @@ enum { /* special cpu IDs */ WORK_CPU_UNBOUND = NR_CPUS, - WORK_CPU_NONE = NR_CPUS + 1, - WORK_CPU_LAST = WORK_CPU_NONE, + WORK_CPU_END = NR_CPUS + 1, /* * Reserve 7 bits off of cwq pointer w/ debugobjects turned -- cgit v1.2.3 From 60c057bca22285efefbba033624763a778f243bf Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Wed, 6 Feb 2013 18:04:53 -0800 Subject: workqueue: add delayed_work->wq to simplify reentrancy handling To avoid executing the same work item from multiple CPUs concurrently, a work_struct records the last pool it was on in its ->data so that, on the next queueing, the pool can be queried to determine whether the work item is still executing or not. A delayed_work goes through timer before actually being queued on the target workqueue and the timer needs to know the target workqueue and CPU. This is currently achieved by modifying delayed_work->work.data such that it points to the cwq which points to the target workqueue and the last CPU the work item was on. __queue_delayed_work() extracts the last CPU from delayed_work->work.data and then combines it with the target workqueue to create new work.data. The only thing this rather ugly hack achieves is encoding the target workqueue into delayed_work->work.data without using a separate field, which could be a trade off one can make; unfortunately, this entangles work->data management between regular workqueue and delayed_work code by setting cwq pointer before the work item is actually queued and becomes a hindrance for further improvements of work->data handling. This can be easily made sane by adding a target workqueue field to delayed_work. While delayed_work is used widely in the kernel and this does make it a bit larger (<5%), I think this is the right trade-off especially given the prospect of much saner handling of work->data which currently involves quite tricky memory barrier dancing, and don't expect to see any measureable effect. Add delayed_work->wq and drop the delayed_work->work.data overloading. tj: Rewrote the description. Signed-off-by: Lai Jiangshan Signed-off-by: Tejun Heo --- include/linux/workqueue.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h index 426c39c2aaa4..a3d7556510c3 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -109,6 +109,9 @@ struct work_struct { struct delayed_work { struct work_struct work; struct timer_list timer; + + /* target workqueue and CPU ->timer uses to queue ->work */ + struct workqueue_struct *wq; int cpu; }; -- cgit v1.2.3 From 2a2483072393b27f4336ab068a1f48ca19ff1c1e Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Thu, 24 Jan 2013 14:14:19 +1000 Subject: vgacon/vt: clear buffer attributes when we load a 512 character font (v2) When we switch from 256->512 byte font rendering mode, it means the current contents of the screen is being reinterpreted. The bit that holds the high bit of the 9-bit font, may have been previously set, and thus the new font misrenders. The problem case we see is grub2 writes spaces with the bit set, so it ends up with data like 0x820, which gets reinterpreted into 0x120 char which the font translates into G with a circumflex. This flashes up on screen at boot and is quite ugly. A current side effect of this patch though is that any rendering on the screen changes color to a slightly darker color, but at least the screen no longer corrupts. v2: as suggested by hpa, always clear the attribute space, whether we are are going to or from 512 chars. Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- include/linux/vt_kern.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/vt_kern.h b/include/linux/vt_kern.h index 50ae7d0c279e..1f55665d7b49 100644 --- a/include/linux/vt_kern.h +++ b/include/linux/vt_kern.h @@ -47,6 +47,7 @@ int con_set_cmap(unsigned char __user *cmap); int con_get_cmap(unsigned char __user *cmap); void scrollback(struct vc_data *vc, int lines); void scrollfront(struct vc_data *vc, int lines); +void clear_buffer_attributes(struct vc_data *vc); void update_region(struct vc_data *vc, unsigned long start, int count); void redraw_screen(struct vc_data *vc, int is_switch); #define update_screen(x) redraw_screen(x, 0) -- cgit v1.2.3 From 9fff24aa2c5c504aadead1ff9599e813604c2e53 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Wed, 6 Feb 2013 22:30:23 -0500 Subject: jbd2: track request delay statistics Track the delay between when we first request that the commit begin and when it actually begins, so we can see how much of a gap exists. In theory, this should just be the remaining scheduling quantuum of the thread which requested the commit (assuming it was not a synchronous operation which triggered the commit request) plus scheduling overhead; however, it's possible that real time processes might get in the way of letting the kjournald thread from executing. Signed-off-by: "Theodore Ts'o" --- include/linux/jbd2.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index e30b66346942..e0aafc46064f 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -580,6 +580,11 @@ struct transaction_s */ unsigned long t_start; + /* + * When commit was requested + */ + unsigned long t_requested; + /* * Checkpointing stats [j_checkpoint_sem] */ @@ -637,6 +642,7 @@ struct transaction_s struct transaction_run_stats_s { unsigned long rs_wait; + unsigned long rs_request_delay; unsigned long rs_running; unsigned long rs_locked; unsigned long rs_flushing; @@ -649,6 +655,7 @@ struct transaction_run_stats_s { struct transaction_stats_s { unsigned long ts_tid; + unsigned long ts_requested; struct transaction_run_stats_s run; }; -- cgit v1.2.3 From 078d5039a13dedbd2ed14153a6d764fd75baae07 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Thu, 7 Feb 2013 00:02:15 -0500 Subject: jbd2: revert "jbd2: add COW fields to struct jbd2_journal_handle" This reverts commit 93737456d68ddcb86232f669b83da673dd12e351. The cow-snapshots effort is no longer active, so remove these extra fields to shrink down the handle structure. Signed-off-by: "Theodore Ts'o" Reviewed-by: Jan Kara --- include/linux/jbd2.h | 28 +++------------------------- 1 file changed, 3 insertions(+), 25 deletions(-) (limited to 'include/linux') diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index e0aafc46064f..24db7256a5ff 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -397,35 +397,13 @@ struct jbd2_journal_handle int h_err; /* Flags [no locking] */ - unsigned int h_sync:1; /* sync-on-close */ - unsigned int h_jdata:1; /* force data journaling */ - unsigned int h_aborted:1; /* fatal error on handle */ - unsigned int h_cowing:1; /* COWing block to snapshot */ - - /* Number of buffers requested by user: - * (before adding the COW credits factor) */ - unsigned int h_base_credits:14; - - /* Number of buffers the user is allowed to dirty: - * (counts only buffers dirtied when !h_cowing) */ - unsigned int h_user_credits:14; - + unsigned int h_sync: 1; /* sync-on-close */ + unsigned int h_jdata: 1; /* force data journaling */ + unsigned int h_aborted: 1; /* fatal error on handle */ #ifdef CONFIG_DEBUG_LOCK_ALLOC struct lockdep_map h_lockdep_map; #endif - -#ifdef CONFIG_JBD2_DEBUG - /* COW debugging counters: */ - unsigned int h_cow_moved; /* blocks moved to snapshot */ - unsigned int h_cow_copied; /* blocks copied to snapshot */ - unsigned int h_cow_ok_jh; /* blocks already COWed during current - transaction */ - unsigned int h_cow_ok_bitmap; /* blocks not set in COW bitmap */ - unsigned int h_cow_ok_mapped;/* blocks already mapped in snapshot */ - unsigned int h_cow_bitmaps; /* COW bitmaps created */ - unsigned int h_cow_excluded; /* blocks set in exclude bitmap */ -#endif }; -- cgit v1.2.3 From 2e033db5ddf299de2ae568919d78b0258a5a6423 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 21 Jan 2013 17:36:33 +0900 Subject: extcon: arizona: Support additional configuration of microphone detection Allow systems to tune detection rate and debounce suitably for their mechanical parameters. Signed-off-by: Mark Brown --- include/linux/mfd/arizona/pdata.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h index bcbe4fda87cb..2f5f08e10b79 100644 --- a/include/linux/mfd/arizona/pdata.h +++ b/include/linux/mfd/arizona/pdata.h @@ -111,6 +111,12 @@ struct arizona_pdata { /** Mic detect ramp rate */ int micd_bias_start_time; + /** Mic detect sample rate */ + int micd_rate; + + /** Mic detect debounce level */ + int micd_dbtime; + /** Headset polarity configurations */ struct arizona_micd_config *micd_configs; int num_micd_configs; -- cgit v1.2.3 From bbbd46e3d7fcdf1c8362bf1c83bcc08a93676cc9 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 10 Jan 2013 19:38:43 +0000 Subject: extcon: arizona: Use regulated mode for microphone supply when detecting When starting microphone detection some headsets should be exposed to the fully regulated microphone bias in order to ensure that they behave in an optimal fashion. Signed-off-by: Mark Brown --- include/linux/mfd/arizona/pdata.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h index 2f5f08e10b79..f8241753415c 100644 --- a/include/linux/mfd/arizona/pdata.h +++ b/include/linux/mfd/arizona/pdata.h @@ -117,6 +117,9 @@ struct arizona_pdata { /** Mic detect debounce level */ int micd_dbtime; + /** Force MICBIAS on for mic detect */ + bool micd_force_micbias; + /** Headset polarity configurations */ struct arizona_micd_config *micd_configs; int num_micd_configs; -- cgit v1.2.3 From cf4aebc292fac7f34f8345664320e9d4a42ca76c Mon Sep 17 00:00:00 2001 From: Clark Williams Date: Thu, 7 Feb 2013 09:46:59 -0600 Subject: sched: Move sched.h sysctl bits into separate header Move the sysctl-related bits from include/linux/sched.h into a new file: include/linux/sched/sysctl.h. Then update source files requiring access to those bits by including the new header file. Signed-off-by: Clark Williams Cc: Peter Zijlstra Cc: Steven Rostedt Link: http://lkml.kernel.org/r/20130207094659.06dced96@riff.lan Signed-off-by: Ingo Molnar --- include/linux/sched.h | 91 ----------------------------------------- include/linux/sched/sysctl.h | 97 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 97 insertions(+), 91 deletions(-) create mode 100644 include/linux/sched/sysctl.h (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 719ee0815e3a..8fc9b2710a80 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -304,19 +304,6 @@ static inline void lockup_detector_init(void) } #endif -#ifdef CONFIG_DETECT_HUNG_TASK -extern unsigned int sysctl_hung_task_panic; -extern unsigned long sysctl_hung_task_check_count; -extern unsigned long sysctl_hung_task_timeout_secs; -extern unsigned long sysctl_hung_task_warnings; -extern int proc_dohung_task_timeout_secs(struct ctl_table *table, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos); -#else -/* Avoid need for ifdefs elsewhere in the code */ -enum { sysctl_hung_task_timeout_secs = 0 }; -#endif - /* Attach to any functions which should be ignored in wchan output. */ #define __sched __attribute__((__section__(".sched.text"))) @@ -338,23 +325,6 @@ extern int mutex_spin_on_owner(struct mutex *lock, struct task_struct *owner); struct nsproxy; struct user_namespace; -/* - * Default maximum number of active map areas, this limits the number of vmas - * per mm struct. Users can overwrite this number by sysctl but there is a - * problem. - * - * When a program's coredump is generated as ELF format, a section is created - * per a vma. In ELF, the number of sections is represented in unsigned short. - * This means the number of sections should be smaller than 65535 at coredump. - * Because the kernel adds some informative sections to a image of program at - * generating coredump, we need some margin. The number of extra sections is - * 1-3 now and depends on arch. We use "5" as safe margin, here. - */ -#define MAPCOUNT_ELF_CORE_MARGIN (5) -#define DEFAULT_MAX_MAP_COUNT (USHRT_MAX - MAPCOUNT_ELF_CORE_MARGIN) - -extern int sysctl_max_map_count; - #include #ifdef CONFIG_MMU @@ -1221,12 +1191,6 @@ struct sched_rt_entity { #endif }; -/* - * default timeslice is 100 msecs (used only for SCHED_RR tasks). - * Timeslices get refilled after they expire. - */ -#define RR_TIMESLICE (100 * HZ / 1000) - struct rcu_node; enum perf_event_task_context { @@ -2074,58 +2038,7 @@ extern void wake_up_idle_cpu(int cpu); static inline void wake_up_idle_cpu(int cpu) { } #endif -extern unsigned int sysctl_sched_latency; -extern unsigned int sysctl_sched_min_granularity; -extern unsigned int sysctl_sched_wakeup_granularity; -extern unsigned int sysctl_sched_child_runs_first; - -enum sched_tunable_scaling { - SCHED_TUNABLESCALING_NONE, - SCHED_TUNABLESCALING_LOG, - SCHED_TUNABLESCALING_LINEAR, - SCHED_TUNABLESCALING_END, -}; -extern enum sched_tunable_scaling sysctl_sched_tunable_scaling; - -extern unsigned int sysctl_numa_balancing_scan_delay; -extern unsigned int sysctl_numa_balancing_scan_period_min; -extern unsigned int sysctl_numa_balancing_scan_period_max; -extern unsigned int sysctl_numa_balancing_scan_period_reset; -extern unsigned int sysctl_numa_balancing_scan_size; -extern unsigned int sysctl_numa_balancing_settle_count; - -#ifdef CONFIG_SCHED_DEBUG -extern unsigned int sysctl_sched_migration_cost; -extern unsigned int sysctl_sched_nr_migrate; -extern unsigned int sysctl_sched_time_avg; -extern unsigned int sysctl_timer_migration; -extern unsigned int sysctl_sched_shares_window; - -int sched_proc_update_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *length, - loff_t *ppos); -#endif -#ifdef CONFIG_SCHED_DEBUG -static inline unsigned int get_sysctl_timer_migration(void) -{ - return sysctl_timer_migration; -} -#else -static inline unsigned int get_sysctl_timer_migration(void) -{ - return 1; -} -#endif -extern unsigned int sysctl_sched_rt_period; -extern int sysctl_sched_rt_runtime; - -int sched_rt_handler(struct ctl_table *table, int write, - void __user *buffer, size_t *lenp, - loff_t *ppos); - #ifdef CONFIG_SCHED_AUTOGROUP -extern unsigned int sysctl_sched_autogroup_enabled; - extern void sched_autogroup_create_attach(struct task_struct *p); extern void sched_autogroup_detach(struct task_struct *p); extern void sched_autogroup_fork(struct signal_struct *sig); @@ -2141,10 +2054,6 @@ static inline void sched_autogroup_fork(struct signal_struct *sig) { } static inline void sched_autogroup_exit(struct signal_struct *sig) { } #endif -#ifdef CONFIG_CFS_BANDWIDTH -extern unsigned int sysctl_sched_cfs_bandwidth_slice; -#endif - #ifdef CONFIG_RT_MUTEXES extern int rt_mutex_getprio(struct task_struct *p); extern void rt_mutex_setprio(struct task_struct *p, int prio); diff --git a/include/linux/sched/sysctl.h b/include/linux/sched/sysctl.h new file mode 100644 index 000000000000..bac914e458ca --- /dev/null +++ b/include/linux/sched/sysctl.h @@ -0,0 +1,97 @@ +#ifndef _SCHED_SYSCTL_H +#define _SCHED_SYSCTL_H + +#ifdef CONFIG_DETECT_HUNG_TASK +extern unsigned int sysctl_hung_task_panic; +extern unsigned long sysctl_hung_task_check_count; +extern unsigned long sysctl_hung_task_timeout_secs; +extern unsigned long sysctl_hung_task_warnings; +extern int proc_dohung_task_timeout_secs(struct ctl_table *table, int write, + void __user *buffer, + size_t *lenp, loff_t *ppos); +#else +/* Avoid need for ifdefs elsewhere in the code */ +enum { sysctl_hung_task_timeout_secs = 0 }; +#endif + +/* + * Default maximum number of active map areas, this limits the number of vmas + * per mm struct. Users can overwrite this number by sysctl but there is a + * problem. + * + * When a program's coredump is generated as ELF format, a section is created + * per a vma. In ELF, the number of sections is represented in unsigned short. + * This means the number of sections should be smaller than 65535 at coredump. + * Because the kernel adds some informative sections to a image of program at + * generating coredump, we need some margin. The number of extra sections is + * 1-3 now and depends on arch. We use "5" as safe margin, here. + */ +#define MAPCOUNT_ELF_CORE_MARGIN (5) +#define DEFAULT_MAX_MAP_COUNT (USHRT_MAX - MAPCOUNT_ELF_CORE_MARGIN) + +extern int sysctl_max_map_count; + +extern unsigned int sysctl_sched_latency; +extern unsigned int sysctl_sched_min_granularity; +extern unsigned int sysctl_sched_wakeup_granularity; +extern unsigned int sysctl_sched_child_runs_first; + +enum sched_tunable_scaling { + SCHED_TUNABLESCALING_NONE, + SCHED_TUNABLESCALING_LOG, + SCHED_TUNABLESCALING_LINEAR, + SCHED_TUNABLESCALING_END, +}; +extern enum sched_tunable_scaling sysctl_sched_tunable_scaling; + +extern unsigned int sysctl_numa_balancing_scan_delay; +extern unsigned int sysctl_numa_balancing_scan_period_min; +extern unsigned int sysctl_numa_balancing_scan_period_max; +extern unsigned int sysctl_numa_balancing_scan_period_reset; +extern unsigned int sysctl_numa_balancing_scan_size; +extern unsigned int sysctl_numa_balancing_settle_count; + +#ifdef CONFIG_SCHED_DEBUG +extern unsigned int sysctl_sched_migration_cost; +extern unsigned int sysctl_sched_nr_migrate; +extern unsigned int sysctl_sched_time_avg; +extern unsigned int sysctl_timer_migration; +extern unsigned int sysctl_sched_shares_window; + +int sched_proc_update_handler(struct ctl_table *table, int write, + void __user *buffer, size_t *length, + loff_t *ppos); +#endif +#ifdef CONFIG_SCHED_DEBUG +static inline unsigned int get_sysctl_timer_migration(void) +{ + return sysctl_timer_migration; +} +#else +static inline unsigned int get_sysctl_timer_migration(void) +{ + return 1; +} +#endif +extern unsigned int sysctl_sched_rt_period; +extern int sysctl_sched_rt_runtime; + +#ifdef CONFIG_CFS_BANDWIDTH +extern unsigned int sysctl_sched_cfs_bandwidth_slice; +#endif + +#ifdef CONFIG_SCHED_AUTOGROUP +extern unsigned int sysctl_sched_autogroup_enabled; +#endif + +/* + * default timeslice is 100 msecs (used only for SCHED_RR tasks). + * Timeslices get refilled after they expire. + */ +#define RR_TIMESLICE (100 * HZ / 1000) + +int sched_rt_handler(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, + loff_t *ppos); + +#endif /* _SCHED_SYSCTL_H */ -- cgit v1.2.3 From ce0dbbbb30aee6a835511d5be446462388ba9eee Mon Sep 17 00:00:00 2001 From: Clark Williams Date: Thu, 7 Feb 2013 09:47:04 -0600 Subject: sched/rt: Add a tuning knob to allow changing SCHED_RR timeslice Add a /proc/sys/kernel scheduler knob named sched_rr_timeslice_ms that allows global changing of the SCHED_RR timeslice value. User visable value is in milliseconds but is stored as jiffies. Setting to 0 (zero) resets to the default (currently 100ms). Signed-off-by: Clark Williams Cc: Peter Zijlstra Cc: Steven Rostedt Link: http://lkml.kernel.org/r/20130207094704.13751796@riff.lan Signed-off-by: Ingo Molnar --- include/linux/sched/sysctl.h | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sched/sysctl.h b/include/linux/sched/sysctl.h index bac914e458ca..d2bb0ae979d0 100644 --- a/include/linux/sched/sysctl.h +++ b/include/linux/sched/sysctl.h @@ -73,6 +73,13 @@ static inline unsigned int get_sysctl_timer_migration(void) return 1; } #endif + +/* + * control realtime throttling: + * + * /proc/sys/kernel/sched_rt_period_us + * /proc/sys/kernel/sched_rt_runtime_us + */ extern unsigned int sysctl_sched_rt_period; extern int sysctl_sched_rt_runtime; @@ -90,7 +97,13 @@ extern unsigned int sysctl_sched_autogroup_enabled; */ #define RR_TIMESLICE (100 * HZ / 1000) -int sched_rt_handler(struct ctl_table *table, int write, +extern int sched_rr_timeslice; + +extern int sched_rr_handler(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, + loff_t *ppos); + +extern int sched_rt_handler(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos); -- cgit v1.2.3 From 8bd75c77b7c6a3954140dd2e20346aef3efe4a35 Mon Sep 17 00:00:00 2001 From: Clark Williams Date: Thu, 7 Feb 2013 09:47:07 -0600 Subject: sched/rt: Move rt specific bits into new header file Move rt scheduler definitions out of include/linux/sched.h into new file include/linux/sched/rt.h Signed-off-by: Clark Williams Cc: Peter Zijlstra Cc: Steven Rostedt Link: http://lkml.kernel.org/r/20130207094707.7b9f825f@riff.lan Signed-off-by: Ingo Molnar --- include/linux/sched.h | 55 ++------------------------------------------- include/linux/sched/rt.h | 58 ++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 60 insertions(+), 53 deletions(-) create mode 100644 include/linux/sched/rt.h (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 8fc9b2710a80..33cc42130371 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1164,6 +1164,7 @@ struct sched_entity { /* rq "owned" by this entity/group: */ struct cfs_rq *my_q; #endif + /* * Load-tracking only depends on SMP, FAIR_GROUP_SCHED dependency below may be * removed when useful for applications beyond shares distribution (e.g. @@ -1191,6 +1192,7 @@ struct sched_rt_entity { #endif }; + struct rcu_node; enum perf_event_task_context { @@ -1596,37 +1598,6 @@ static inline void set_numabalancing_state(bool enabled) } #endif -/* - * Priority of a process goes from 0..MAX_PRIO-1, valid RT - * priority is 0..MAX_RT_PRIO-1, and SCHED_NORMAL/SCHED_BATCH - * tasks are in the range MAX_RT_PRIO..MAX_PRIO-1. Priority - * values are inverted: lower p->prio value means higher priority. - * - * The MAX_USER_RT_PRIO value allows the actual maximum - * RT priority to be separate from the value exported to - * user-space. This allows kernel threads to set their - * priority to a value higher than any user task. Note: - * MAX_RT_PRIO must not be smaller than MAX_USER_RT_PRIO. - */ - -#define MAX_USER_RT_PRIO 100 -#define MAX_RT_PRIO MAX_USER_RT_PRIO - -#define MAX_PRIO (MAX_RT_PRIO + 40) -#define DEFAULT_PRIO (MAX_RT_PRIO + 20) - -static inline int rt_prio(int prio) -{ - if (unlikely(prio < MAX_RT_PRIO)) - return 1; - return 0; -} - -static inline int rt_task(struct task_struct *p) -{ - return rt_prio(p->prio); -} - static inline struct pid *task_pid(struct task_struct *task) { return task->pids[PIDTYPE_PID].pid; @@ -2054,26 +2025,6 @@ static inline void sched_autogroup_fork(struct signal_struct *sig) { } static inline void sched_autogroup_exit(struct signal_struct *sig) { } #endif -#ifdef CONFIG_RT_MUTEXES -extern int rt_mutex_getprio(struct task_struct *p); -extern void rt_mutex_setprio(struct task_struct *p, int prio); -extern void rt_mutex_adjust_pi(struct task_struct *p); -static inline bool tsk_is_pi_blocked(struct task_struct *tsk) -{ - return tsk->pi_blocked_on != NULL; -} -#else -static inline int rt_mutex_getprio(struct task_struct *p) -{ - return p->normal_prio; -} -# define rt_mutex_adjust_pi(p) do { } while (0) -static inline bool tsk_is_pi_blocked(struct task_struct *tsk) -{ - return false; -} -#endif - extern bool yield_to(struct task_struct *p, bool preempt); extern void set_user_nice(struct task_struct *p, long nice); extern int task_prio(const struct task_struct *p); @@ -2703,8 +2654,6 @@ static inline void set_task_cpu(struct task_struct *p, unsigned int cpu) extern long sched_setaffinity(pid_t pid, const struct cpumask *new_mask); extern long sched_getaffinity(pid_t pid, struct cpumask *mask); -extern void normalize_rt_tasks(void); - #ifdef CONFIG_CGROUP_SCHED extern struct task_group root_task_group; diff --git a/include/linux/sched/rt.h b/include/linux/sched/rt.h new file mode 100644 index 000000000000..94e19ea28fc3 --- /dev/null +++ b/include/linux/sched/rt.h @@ -0,0 +1,58 @@ +#ifndef _SCHED_RT_H +#define _SCHED_RT_H + +/* + * Priority of a process goes from 0..MAX_PRIO-1, valid RT + * priority is 0..MAX_RT_PRIO-1, and SCHED_NORMAL/SCHED_BATCH + * tasks are in the range MAX_RT_PRIO..MAX_PRIO-1. Priority + * values are inverted: lower p->prio value means higher priority. + * + * The MAX_USER_RT_PRIO value allows the actual maximum + * RT priority to be separate from the value exported to + * user-space. This allows kernel threads to set their + * priority to a value higher than any user task. Note: + * MAX_RT_PRIO must not be smaller than MAX_USER_RT_PRIO. + */ + +#define MAX_USER_RT_PRIO 100 +#define MAX_RT_PRIO MAX_USER_RT_PRIO + +#define MAX_PRIO (MAX_RT_PRIO + 40) +#define DEFAULT_PRIO (MAX_RT_PRIO + 20) + +static inline int rt_prio(int prio) +{ + if (unlikely(prio < MAX_RT_PRIO)) + return 1; + return 0; +} + +static inline int rt_task(struct task_struct *p) +{ + return rt_prio(p->prio); +} + +#ifdef CONFIG_RT_MUTEXES +extern int rt_mutex_getprio(struct task_struct *p); +extern void rt_mutex_setprio(struct task_struct *p, int prio); +extern void rt_mutex_adjust_pi(struct task_struct *p); +static inline bool tsk_is_pi_blocked(struct task_struct *tsk) +{ + return tsk->pi_blocked_on != NULL; +} +#else +static inline int rt_mutex_getprio(struct task_struct *p) +{ + return p->normal_prio; +} +# define rt_mutex_adjust_pi(p) do { } while (0) +static inline bool tsk_is_pi_blocked(struct task_struct *tsk) +{ + return false; +} +#endif + +extern void normalize_rt_tasks(void); + + +#endif /* _SCHED_RT_H */ -- cgit v1.2.3 From 3bc97a782cc8c112f64a25143452b06206364cc8 Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Thu, 29 Nov 2012 16:46:05 +0800 Subject: srcu: Remove checks preventing offline CPUs from calling srcu_read_lock() SRCU has its own statemachine and no longer relies on normal RCU. Its read-side critical section can now be used by an offline CPU, so this commit removes the check and the comments, reverting the SRCU portion of c0d6d01b (rcu: Check for illegal use of RCU from offlined CPUs). It also makes the code match the comments in whatisRCU.txt: g. Do you need read-side critical sections that are respected even though they are in the middle of the idle loop, during user-mode execution, or on an offlined CPU? If so, SRCU is the only choice that will work for you. [ paulmck: There is at least one remaining issue, namely use of lockdep with tracing enabled. ] Signed-off-by: Lai Jiangshan Signed-off-by: Paul E. McKenney --- include/linux/srcu.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/srcu.h b/include/linux/srcu.h index 6eb691b08358..ae3ee39eb699 100644 --- a/include/linux/srcu.h +++ b/include/linux/srcu.h @@ -163,9 +163,6 @@ void srcu_barrier(struct srcu_struct *sp); * power mode. This way we can notice an extended quiescent state to * other CPUs that started a grace period. Otherwise we would delay any * grace period as long as we run in the idle task. - * - * Similarly, we avoid claiming an SRCU read lock held if the current - * CPU is offline. */ static inline int srcu_read_lock_held(struct srcu_struct *sp) { @@ -173,8 +170,6 @@ static inline int srcu_read_lock_held(struct srcu_struct *sp) return 1; if (rcu_is_cpu_idle()) return 0; - if (!rcu_lockdep_current_cpu_online()) - return 0; return lock_is_held(&sp->dep_map); } -- cgit v1.2.3 From 511a0868bed6694512348fc177cdfaf3fd97d0bb Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Thu, 29 Nov 2012 16:46:06 +0800 Subject: srcu: Remove checks preventing idle CPUs from calling srcu_read_lock() SRCU has its own statemachine and no longer relies on normal RCU. Its read-side critical section can now be used by an offline CPU, so this commit removes the check and the comments, reverting the SRCU portion of ff195cb6 (rcu: Warn when srcu_read_lock() is used in an extended quiescent state). It also makes the codes match the comments in whatisRCU.txt: g. Do you need read-side critical sections that are respected even though they are in the middle of the idle loop, during user-mode execution, or on an offlined CPU? If so, SRCU is the only choice that will work for you. [ paulmck: There is at least one remaining issue, namely use of lockdep with tracing enabled. ] Signed-off-by: Lai Jiangshan Signed-off-by: Paul E. McKenney --- include/linux/srcu.h | 21 +++------------------ 1 file changed, 3 insertions(+), 18 deletions(-) (limited to 'include/linux') diff --git a/include/linux/srcu.h b/include/linux/srcu.h index ae3ee39eb699..04f4121a23ae 100644 --- a/include/linux/srcu.h +++ b/include/linux/srcu.h @@ -151,25 +151,14 @@ void srcu_barrier(struct srcu_struct *sp); * Checks debug_lockdep_rcu_enabled() to prevent false positives during boot * and while lockdep is disabled. * - * Note that if the CPU is in the idle loop from an RCU point of view - * (ie: that we are in the section between rcu_idle_enter() and - * rcu_idle_exit()) then srcu_read_lock_held() returns false even if - * the CPU did an srcu_read_lock(). The reason for this is that RCU - * ignores CPUs that are in such a section, considering these as in - * extended quiescent state, so such a CPU is effectively never in an - * RCU read-side critical section regardless of what RCU primitives it - * invokes. This state of affairs is required --- we need to keep an - * RCU-free window in idle where the CPU may possibly enter into low - * power mode. This way we can notice an extended quiescent state to - * other CPUs that started a grace period. Otherwise we would delay any - * grace period as long as we run in the idle task. + * Note that SRCU is based on its own statemachine and it doesn't + * relies on normal RCU, it can be called from the CPU which + * is in the idle loop from an RCU point of view or offline. */ static inline int srcu_read_lock_held(struct srcu_struct *sp) { if (!debug_lockdep_rcu_enabled()) return 1; - if (rcu_is_cpu_idle()) - return 0; return lock_is_held(&sp->dep_map); } @@ -231,8 +220,6 @@ static inline int srcu_read_lock(struct srcu_struct *sp) __acquires(sp) int retval = __srcu_read_lock(sp); rcu_lock_acquire(&(sp)->dep_map); - rcu_lockdep_assert(!rcu_is_cpu_idle(), - "srcu_read_lock() used illegally while idle"); return retval; } @@ -246,8 +233,6 @@ static inline int srcu_read_lock(struct srcu_struct *sp) __acquires(sp) static inline void srcu_read_unlock(struct srcu_struct *sp, int idx) __releases(sp) { - rcu_lockdep_assert(!rcu_is_cpu_idle(), - "srcu_read_unlock() used illegally while idle"); rcu_lock_release(&(sp)->dep_map); __srcu_read_unlock(sp, idx); } -- cgit v1.2.3 From 50e244cc793d511b86adea24972f3a7264cae114 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Fri, 25 Jan 2013 10:28:15 +1000 Subject: fb: rework locking to fix lock ordering on takeover Adjust the console layer to allow a take over call where the caller already holds the locks. Make the fb layer lock in order. This is partly a band aid, the fb layer is terminally confused about the locking rules it uses for its notifiers it seems. [akpm@linux-foundation.org: remove stray non-ascii char, tidy comment] [akpm@linux-foundation.org: export do_take_over_console()] [airlied: cleanup another non-ascii char] Signed-off-by: Alan Cox Cc: Florian Tobias Schandinat Cc: Stephen Rothwell Cc: Jiri Kosina Cc: stable Tested-by: Sedat Dilek Reviewed-by: Daniel Vetter Signed-off-by: Andrew Morton Signed-off-by: Dave Airlie --- include/linux/console.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/console.h b/include/linux/console.h index dedb082fe50f..4ef4307dfb82 100644 --- a/include/linux/console.h +++ b/include/linux/console.h @@ -78,6 +78,7 @@ int con_is_bound(const struct consw *csw); int register_con_driver(const struct consw *csw, int first, int last); int unregister_con_driver(const struct consw *csw); int take_over_console(const struct consw *sw, int first, int last, int deflt); +int do_take_over_console(const struct consw *sw, int first, int last, int deflt); void give_up_console(const struct consw *sw); #ifdef CONFIG_HW_CONSOLE int con_debug_enter(struct vc_data *vc); -- cgit v1.2.3 From e93a9a868792ad71cdd09d75e5a02d8067473c4e Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 25 Jan 2013 10:28:18 +1000 Subject: fb: Yet another band-aid for fixing lockdep mess I've still got lockdep warnings even after Alan's patch, and it seems that yet more band aids are required to paper over similar paths for unbind_con_driver() and unregister_con_driver(). After this hack, lockdep warnings are finally gone. Signed-off-by: Takashi Iwai Cc: Alan Cox Cc: Florian Tobias Schandinat Cc: Jiri Kosina Cc: stable Tested-by: Sedat Dilek Signed-off-by: Andrew Morton Signed-off-by: Dave Airlie --- include/linux/console.h | 1 + include/linux/vt_kern.h | 2 ++ 2 files changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/console.h b/include/linux/console.h index 4ef4307dfb82..47b858cffc47 100644 --- a/include/linux/console.h +++ b/include/linux/console.h @@ -77,6 +77,7 @@ extern const struct consw prom_con; /* SPARC PROM console */ int con_is_bound(const struct consw *csw); int register_con_driver(const struct consw *csw, int first, int last); int unregister_con_driver(const struct consw *csw); +int do_unregister_con_driver(const struct consw *csw); int take_over_console(const struct consw *sw, int first, int last, int deflt); int do_take_over_console(const struct consw *sw, int first, int last, int deflt); void give_up_console(const struct consw *sw); diff --git a/include/linux/vt_kern.h b/include/linux/vt_kern.h index 50ae7d0c279e..dbbc6bfee71f 100644 --- a/include/linux/vt_kern.h +++ b/include/linux/vt_kern.h @@ -130,6 +130,8 @@ void vt_event_post(unsigned int event, unsigned int old, unsigned int new); int vt_waitactive(int n); void change_console(struct vc_data *new_vc); void reset_vc(struct vc_data *vc); +extern int do_unbind_con_driver(const struct consw *csw, int first, int last, + int deflt); extern int unbind_con_driver(const struct consw *csw, int first, int last, int deflt); int vty_init(const struct file_operations *console_fops); -- cgit v1.2.3 From 16a10ffd20a13215243bdba64c8e57ef277a55b9 Mon Sep 17 00:00:00 2001 From: Yan Burman Date: Thu, 7 Feb 2013 02:25:22 +0000 Subject: net/mlx4: Move Ethernet related functionality from mlx4_core to mlx4_en Move low level code that deals with management of Ethernet MACs and QPs from mlx4_core to mlx4_en. Also convert the new functions to deal with MACs in form of char array instead of u64. Actual functions moved: mlx4_replace_mac mlx4_get_eth_qp mlx4_put_eth_qp To conduct this change, some functionality had to be exported from the core, the following functions were added: mlx4_get_base_qp __mlx4_replace_mac (low level function for CX1/A0 compatibility) Signed-off-by: Yan Burman Signed-off-by: Amir Vadai Signed-off-by: David S. Miller --- include/linux/mlx4/device.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index 1883e8e84718..6d48fce06b4a 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -956,9 +956,8 @@ int mlx4_SET_MCAST_FLTR(struct mlx4_dev *dev, u8 port, u64 mac, u64 clear, u8 mo int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac); void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, u64 mac); -int mlx4_replace_mac(struct mlx4_dev *dev, u8 port, int qpn, u64 new_mac); -int mlx4_get_eth_qp(struct mlx4_dev *dev, u8 port, u64 mac, int *qpn); -void mlx4_put_eth_qp(struct mlx4_dev *dev, u8 port, u64 mac, int qpn); +int mlx4_get_base_qpn(struct mlx4_dev *dev, u8 port); +int __mlx4_replace_mac(struct mlx4_dev *dev, u8 port, int qpn, u64 new_mac); void mlx4_set_stats_bitmap(struct mlx4_dev *dev, u64 *stats_bitmap); int mlx4_SET_PORT_general(struct mlx4_dev *dev, u8 port, int mtu, u8 pptx, u8 pfctx, u8 pprx, u8 pfcrx); -- cgit v1.2.3 From 180996c30517b5374f63df3c9765716c5b477155 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Thu, 7 Feb 2013 05:37:37 +0000 Subject: ssb: get mac address from sprom struct for gige driver The mac address is already stored in the sprom structure by the platform code of the SoC this Ethernet core is found on, it just has to be fetched from this structure instead of accessing the nvram here. This patch also adds a return value to indicate if a mac address could be fetched from the sprom structure. When CONFIG_SSB_DRIVER_GIGE is not set the header file now also declares ssb_gige_get_macaddr(). Signed-off-by: Hauke Mehrtens Acked-by: Michael Buesch Signed-off-by: David S. Miller --- include/linux/ssb/ssb_driver_gige.h | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ssb/ssb_driver_gige.h b/include/linux/ssb/ssb_driver_gige.h index 6b05dcd927ff..86a12b0cb239 100644 --- a/include/linux/ssb/ssb_driver_gige.h +++ b/include/linux/ssb/ssb_driver_gige.h @@ -97,21 +97,16 @@ static inline bool ssb_gige_must_flush_posted_writes(struct pci_dev *pdev) return 0; } -#ifdef CONFIG_BCM47XX -#include /* Get the device MAC address */ -static inline void ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr) -{ - char buf[20]; - if (nvram_getenv("et0macaddr", buf, sizeof(buf)) < 0) - return; - nvram_parse_macaddr(buf, macaddr); -} -#else -static inline void ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr) +static inline int ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr) { + struct ssb_gige *dev = pdev_to_ssb_gige(pdev); + if (!dev) + return -ENODEV; + + memcpy(macaddr, dev->dev->bus->sprom.et0mac, 6); + return 0; } -#endif extern int ssb_gige_pcibios_plat_dev_init(struct ssb_device *sdev, struct pci_dev *pdev); @@ -175,6 +170,10 @@ static inline bool ssb_gige_must_flush_posted_writes(struct pci_dev *pdev) { return 0; } +static inline int ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr) +{ + return -ENODEV; +} #endif /* CONFIG_SSB_DRIVER_GIGE */ #endif /* LINUX_SSB_DRIVER_GIGE_H_ */ -- cgit v1.2.3 From 7e6c63f03d94278135753fef7ffcc5b03e34282e Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Thu, 7 Feb 2013 05:37:39 +0000 Subject: tg3: add support for Ethernet core in bcm4785 The BCM4785 or sometimes named BMC4705 is a Broadcom SoC which a Gigabit 5750 Ethernet core. The core is connected via PCI with the rest of the SoC, but it uses some extension. This core does not use a firmware or an eeprom. Some devices only have a switch which supports 100MBit/s, this currently does not work with this driver. This patch was original written by Michael Buesch and is in OpenWrt for some years now. This was tested on a Linksys WRT610N V1 and older versions of this patch were tested by other people on different devices. Signed-off-by: Hauke Mehrtens Acked-by: Michael Chan Signed-off-by: David S. Miller --- include/linux/pci_ids.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 0eb65796bcb9..907e7e56fa4b 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2127,6 +2127,7 @@ #define PCI_DEVICE_ID_TIGON3_5754M 0x1672 #define PCI_DEVICE_ID_TIGON3_5755M 0x1673 #define PCI_DEVICE_ID_TIGON3_5756 0x1674 +#define PCI_DEVICE_ID_TIGON3_5750 0x1676 #define PCI_DEVICE_ID_TIGON3_5751 0x1677 #define PCI_DEVICE_ID_TIGON3_5715 0x1678 #define PCI_DEVICE_ID_TIGON3_5715S 0x1679 -- cgit v1.2.3 From 9c79330d930b5774aed8eb323daebecedce2e245 Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Thu, 7 Feb 2013 16:18:39 +0000 Subject: net: usb: fix regression from FLAG_NOARP code In commit 6509141f9c2ba74df6cc72ec35cd1865276ae3a4 ("usbnet: add new flag FLAG_NOARP for usb net devices"), the newly added flag NOARP was using an already defined value, which broke drivers using flag MULTI_PACKET. Signed-off-by: Lucas Stach Signed-off-by: David S. Miller --- include/linux/usb/usbnet.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h index 0de078d4cdb9..0e5ac93bab10 100644 --- a/include/linux/usb/usbnet.h +++ b/include/linux/usb/usbnet.h @@ -102,7 +102,6 @@ struct driver_info { #define FLAG_LINK_INTR 0x0800 /* updates link (carrier) status */ #define FLAG_POINTTOPOINT 0x1000 /* possibly use "usb%d" names */ -#define FLAG_NOARP 0x2000 /* device can't do ARP */ /* * Indicates to usbnet, that USB driver accumulates multiple IP packets. @@ -110,6 +109,7 @@ struct driver_info { */ #define FLAG_MULTI_PACKET 0x2000 #define FLAG_RX_ASSEMBLE 0x4000 /* rx packets may span >1 frames */ +#define FLAG_NOARP 0x8000 /* device can't do ARP */ /* init device ... can sleep, or cause probe() failure */ int (*bind)(struct usbnet *, struct usb_interface *); -- cgit v1.2.3 From afb43e6d88e587441c960a5d214d2c698d076c9c Mon Sep 17 00:00:00 2001 From: Luciano Coelho Date: Fri, 25 Jan 2013 11:57:48 +0200 Subject: wlcore: remove if_ops from platform_data We can't pass pointers from the platform data to the modules, because with DT it cannot be done. Those pointers are not set by the board files anyway. It's the bus modules that set them, so they can be safely removed from the platform data without changing any board files. Create a new structure that the bus modules pass to wlcore. This structure contains the if_ops pointers and a pointer to the actual platform data. Signed-off-by: Luciano Coelho Reviewed-by: Felipe Balbi --- include/linux/wl12xx.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/wl12xx.h b/include/linux/wl12xx.h index 0d6373195d32..360c9bce665c 100644 --- a/include/linux/wl12xx.h +++ b/include/linux/wl12xx.h @@ -55,8 +55,6 @@ struct wl12xx_platform_data { int board_tcxo_clock; unsigned long platform_quirks; bool pwr_in_suspend; - - struct wl1271_if_operations *ops; }; /* Platform does not support level trigger interrupts */ -- cgit v1.2.3 From 6cc9efed707c575a9e5880ea68f8b9d36b235f1f Mon Sep 17 00:00:00 2001 From: Luciano Coelho Date: Fri, 25 Jan 2013 12:05:34 +0200 Subject: wlcore: move wl12xx_platform_data up and make it truly optional The platform data is used not only by wlcore-based drivers, but also by wl1251. Move it up in the directory hierarchy to reflect this. Additionally, make it truly optional. At the moment, disabling platform data while wl1251_sdio or wlcore_sdio are enabled doesn't work, but it will be necessary when device tree support is implemented. Signed-off-by: Luciano Coelho Reviewed-by: Felipe Balbi --- include/linux/wl12xx.h | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/wl12xx.h b/include/linux/wl12xx.h index 360c9bce665c..a54fe82e704b 100644 --- a/include/linux/wl12xx.h +++ b/include/linux/wl12xx.h @@ -24,6 +24,8 @@ #ifndef _LINUX_WL12XX_H #define _LINUX_WL12XX_H +#include + /* Reference clock values */ enum { WL12XX_REFCLOCK_19 = 0, /* 19.2 MHz */ @@ -60,10 +62,12 @@ struct wl12xx_platform_data { /* Platform does not support level trigger interrupts */ #define WL12XX_PLATFORM_QUIRK_EDGE_IRQ BIT(0) -#ifdef CONFIG_WL12XX_PLATFORM_DATA +#ifdef CONFIG_WILINK_PLATFORM_DATA int wl12xx_set_platform_data(const struct wl12xx_platform_data *data); +struct wl12xx_platform_data *wl12xx_get_platform_data(void); + #else static inline @@ -72,8 +76,12 @@ int wl12xx_set_platform_data(const struct wl12xx_platform_data *data) return -ENOSYS; } -#endif +static inline +struct wl12xx_platform_data *wl12xx_get_platform_data(void) +{ + return ERR_PTR(-ENODATA); +} -struct wl12xx_platform_data *wl12xx_get_platform_data(void); +#endif #endif -- cgit v1.2.3 From cd7bed00340475ee72a013a070e200e065085ef3 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Tue, 22 Jan 2013 12:26:28 +0200 Subject: spi/pxa2xx: break out the private DMA API usage into a separate file The PXA SPI driver uses PXA platform specific private DMA implementation which does not work on non-PXA platforms. In order to use this driver on other platforms we break out the private DMA implementation into a separate file that gets compiled only when CONFIG_SPI_PXA2XX_PXADMA is set. The DMA functions are stubbed out if there is no DMA implementation selected (i.e we are building on non-PXA platform). While we are there we can kill the dummy DMA bits in pxa2xx_spi.h as they are not needed anymore for CE4100. Once this is done we can add the generic DMA engine support to the driver that allows usage of any DMA controller that implements DMA engine API. Signed-off-by: Mika Westerberg Acked-by: Linus Walleij Tested-by: Lu Cao Signed-off-by: Mark Brown --- include/linux/spi/pxa2xx_spi.h | 80 ------------------------------------------ 1 file changed, 80 deletions(-) (limited to 'include/linux') diff --git a/include/linux/spi/pxa2xx_spi.h b/include/linux/spi/pxa2xx_spi.h index 053b5ba51b25..d6d2b4d557f8 100644 --- a/include/linux/spi/pxa2xx_spi.h +++ b/include/linux/spi/pxa2xx_spi.h @@ -53,85 +53,5 @@ struct pxa2xx_spi_chip { extern void pxa2xx_set_spi_info(unsigned id, struct pxa2xx_spi_master *info); -#else -/* - * This is the implemtation for CE4100 on x86. ARM defines them in mach/ or - * plat/ include path. - * The CE4100 does not provide DMA support. This bits are here to let the driver - * compile and will never be used. Maybe we get DMA support at a later point in - * time. - */ - -#define DCSR(n) (n) -#define DSADR(n) (n) -#define DTADR(n) (n) -#define DCMD(n) (n) -#define DRCMR(n) (n) - -#define DCSR_RUN (1 << 31) /* Run Bit */ -#define DCSR_NODESC (1 << 30) /* No-Descriptor Fetch */ -#define DCSR_STOPIRQEN (1 << 29) /* Stop Interrupt Enable */ -#define DCSR_REQPEND (1 << 8) /* Request Pending (read-only) */ -#define DCSR_STOPSTATE (1 << 3) /* Stop State (read-only) */ -#define DCSR_ENDINTR (1 << 2) /* End Interrupt */ -#define DCSR_STARTINTR (1 << 1) /* Start Interrupt */ -#define DCSR_BUSERR (1 << 0) /* Bus Error Interrupt */ - -#define DCSR_EORIRQEN (1 << 28) /* End of Receive Interrupt Enable */ -#define DCSR_EORJMPEN (1 << 27) /* Jump to next descriptor on EOR */ -#define DCSR_EORSTOPEN (1 << 26) /* STOP on an EOR */ -#define DCSR_SETCMPST (1 << 25) /* Set Descriptor Compare Status */ -#define DCSR_CLRCMPST (1 << 24) /* Clear Descriptor Compare Status */ -#define DCSR_CMPST (1 << 10) /* The Descriptor Compare Status */ -#define DCSR_EORINTR (1 << 9) /* The end of Receive */ - -#define DRCMR_MAPVLD (1 << 7) /* Map Valid */ -#define DRCMR_CHLNUM 0x1f /* mask for Channel Number */ - -#define DDADR_DESCADDR 0xfffffff0 /* Address of next descriptor */ -#define DDADR_STOP (1 << 0) /* Stop */ - -#define DCMD_INCSRCADDR (1 << 31) /* Source Address Increment Setting. */ -#define DCMD_INCTRGADDR (1 << 30) /* Target Address Increment Setting. */ -#define DCMD_FLOWSRC (1 << 29) /* Flow Control by the source. */ -#define DCMD_FLOWTRG (1 << 28) /* Flow Control by the target. */ -#define DCMD_STARTIRQEN (1 << 22) /* Start Interrupt Enable */ -#define DCMD_ENDIRQEN (1 << 21) /* End Interrupt Enable */ -#define DCMD_ENDIAN (1 << 18) /* Device Endian-ness. */ -#define DCMD_BURST8 (1 << 16) /* 8 byte burst */ -#define DCMD_BURST16 (2 << 16) /* 16 byte burst */ -#define DCMD_BURST32 (3 << 16) /* 32 byte burst */ -#define DCMD_WIDTH1 (1 << 14) /* 1 byte width */ -#define DCMD_WIDTH2 (2 << 14) /* 2 byte width (HalfWord) */ -#define DCMD_WIDTH4 (3 << 14) /* 4 byte width (Word) */ -#define DCMD_LENGTH 0x01fff /* length mask (max = 8K - 1) */ - -/* - * Descriptor structure for PXA's DMA engine - * Note: this structure must always be aligned to a 16-byte boundary. - */ - -typedef enum { - DMA_PRIO_HIGH = 0, - DMA_PRIO_MEDIUM = 1, - DMA_PRIO_LOW = 2 -} pxa_dma_prio; - -/* - * DMA registration - */ - -static inline int pxa_request_dma(char *name, - pxa_dma_prio prio, - void (*irq_handler)(int, void *), - void *data) -{ - return -ENODEV; -} - -static inline void pxa_free_dma(int dma_ch) -{ -} - #endif #endif -- cgit v1.2.3 From 5928808ef623347e0d4aa22327b992e9e125b6ad Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Tue, 22 Jan 2013 12:26:29 +0200 Subject: spi/pxa2xx: add support for DMA engine To be able to use DMA with this driver on non-PXA platforms we implement support for the generic DMA engine API. This lets user to use different DMA engines with little or no modification to the driver. Request lines and channel numbers can be passed to the driver from the platform specific data. The DMA engine implementation will be selected by default even on PXA platform. User can select the legacy DMA API by enabling Kconfig option CONFIG_SPI_PXA2XX_PXADMA. Signed-off-by: Mika Westerberg Acked-by: Linus Walleij Tested-by: Lu Cao Signed-off-by: Mark Brown --- include/linux/spi/pxa2xx_spi.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/spi/pxa2xx_spi.h b/include/linux/spi/pxa2xx_spi.h index d6d2b4d557f8..e5cbbc4c57f7 100644 --- a/include/linux/spi/pxa2xx_spi.h +++ b/include/linux/spi/pxa2xx_spi.h @@ -29,6 +29,12 @@ struct pxa2xx_spi_master { u16 num_chipselect; u8 enable_dma; + /* DMA engine specific config */ + int rx_chan_id; + int tx_chan_id; + int rx_slave_id; + int tx_slave_id; + /* For non-PXA arches */ struct ssp_device ssp; }; -- cgit v1.2.3 From 4f0a6847815837b63b05fc23878ba391701d8f6a Mon Sep 17 00:00:00 2001 From: Jonghwa Lee Date: Fri, 8 Feb 2013 01:13:06 +0000 Subject: Thermal: exynos: Add support for temperature falling interrupt. This patch introduces using temperature falling interrupt in exynos thermal driver. Former patch, it only use polling way to check whether if system themperature is fallen. However, exynos SOC also provides temperature falling interrupt way to do same things by hw. This feature is not supported in exynos4210. Acked-by: Kukjin Kim Signed-off-by: Jonghwa Lee Signed-off-by: Amit Daniel Kachhap Signed-off-by: Zhang Rui --- include/linux/platform_data/exynos_thermal.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/exynos_thermal.h b/include/linux/platform_data/exynos_thermal.h index a7bdb2f63b73..da7e6274b175 100644 --- a/include/linux/platform_data/exynos_thermal.h +++ b/include/linux/platform_data/exynos_thermal.h @@ -53,6 +53,8 @@ struct freq_clip_table { * struct exynos_tmu_platform_data * @threshold: basic temperature for generating interrupt * 25 <= threshold <= 125 [unit: degree Celsius] + * @threshold_falling: differntial value for setting threshold + * of temperature falling interrupt. * @trigger_levels: array for each interrupt levels * [unit: degree Celsius] * 0: temperature for trigger_level0 interrupt @@ -97,6 +99,7 @@ struct freq_clip_table { */ struct exynos_tmu_platform_data { u8 threshold; + u8 threshold_falling; u8 trigger_levels[4]; bool trigger_level0_en; bool trigger_level1_en; -- cgit v1.2.3 From a0d2642e9296882cda3ad03ff3d9a6649cd70439 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Tue, 22 Jan 2013 12:26:32 +0200 Subject: spi/pxa2xx: add support for Intel Low Power Subsystem SPI Intel LPSS SPI is pretty much the same as the PXA27xx SPI except that it has few additional features over the original: o FIFO depth is 256 entries o RX FIFO has one watermark o TX FIFO has two watermarks, low and high o chip select can be controlled by writing to a register The new FIFO registers follow immediately the PXA27xx registers but then there are some additional LPSS private registers at offset 1k or 2k from the base address. For these private registers we add new accessors that take advantage of drv_data->lpss_base once it is resolved. We add a new type LPSS_SSP that can be used to distinguish the LPSS devices from others. Signed-off-by: Mika Westerberg Tested-by: Lu Cao Signed-off-by: Mark Brown --- include/linux/pxa2xx_ssp.h | 9 +++++++++ include/linux/spi/pxa2xx_spi.h | 1 + 2 files changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pxa2xx_ssp.h b/include/linux/pxa2xx_ssp.h index 065e7f6c3ad7..467cc6307b62 100644 --- a/include/linux/pxa2xx_ssp.h +++ b/include/linux/pxa2xx_ssp.h @@ -155,6 +155,14 @@ #define SSACD_ACDS(x) ((x) << 0) /* Audio clock divider select */ #define SSACD_SCDX8 (1 << 7) /* SYSCLK division ratio select */ +/* LPSS SSP */ +#define SSITF 0x44 /* TX FIFO trigger level */ +#define SSITF_TxLoThresh(x) (((x) - 1) << 8) +#define SSITF_TxHiThresh(x) ((x) - 1) + +#define SSIRF 0x48 /* RX FIFO trigger level */ +#define SSIRF_RxThresh(x) ((x) - 1) + enum pxa_ssp_type { SSP_UNDEFINED = 0, PXA25x_SSP, /* pxa 210, 250, 255, 26x */ @@ -164,6 +172,7 @@ enum pxa_ssp_type { PXA168_SSP, PXA910_SSP, CE4100_SSP, + LPSS_SSP, }; struct ssp_device { diff --git a/include/linux/spi/pxa2xx_spi.h b/include/linux/spi/pxa2xx_spi.h index e5cbbc4c57f7..82d5111cd0c2 100644 --- a/include/linux/spi/pxa2xx_spi.h +++ b/include/linux/spi/pxa2xx_spi.h @@ -44,6 +44,7 @@ struct pxa2xx_spi_master { */ struct pxa2xx_spi_chip { u8 tx_threshold; + u8 tx_hi_threshold; u8 rx_threshold; u8 dma_burst_size; u32 timeout; -- cgit v1.2.3 From fe20d71f25400cccc8bffef865f79250be7dbc81 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Wed, 21 Nov 2012 17:32:30 +0100 Subject: uprobes: Kill uprobe_consumer->filter() uprobe_consumer->filter() is pointless in its current form, kill it. We will add it back, but with the different signature/semantics. Perhaps we will even re-introduce the callsite in handler_chain(), but not to just skip uc->handler(). Signed-off-by: Oleg Nesterov Acked-by: Srikar Dronamraju --- include/linux/uprobes.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h index 4f628a6fc5b4..83742b91ff73 100644 --- a/include/linux/uprobes.h +++ b/include/linux/uprobes.h @@ -37,11 +37,6 @@ struct inode; struct uprobe_consumer { int (*handler)(struct uprobe_consumer *self, struct pt_regs *regs); - /* - * filter is optional; If a filter exists, handler is run - * if and only if filter returns true. - */ - bool (*filter)(struct uprobe_consumer *self, struct task_struct *task); struct uprobe_consumer *next; }; -- cgit v1.2.3 From 8a7f2fa0dea3b019500961b86d765e6fdd4bffb2 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Fri, 28 Dec 2012 17:58:38 +0100 Subject: uprobes: Reintroduce uprobe_consumer->filter() Finally add uprobe_consumer->filter() and change consumer_filter() to actually call this method. Note that ->filter() accepts mm_struct, not task_struct. Because: 1. We do not have for_each_mm_user(mm, task). 2. Even if we implement for_each_mm_user(), ->filter() can use it itself. 3. It is not clear who will actually need this interface to do the "nontrivial" filtering. Another argument is "enum uprobe_filter_ctx", consumer->filter() can use it to figure out why/where it was called. For example, perhaps we can add UPROBE_FILTER_PRE_REGISTER used by build_map_info() to quickly "nack" the unwanted mm's. In this case consumer should know that it is called under ->i_mmap_mutex. See the previous discussion at http://marc.info/?t=135214229700002 Perhaps we should pass more arguments, vma/vaddr? Note: this patch obviously can't help to filter out the child created by fork(), this will be addressed later. Signed-off-by: Oleg Nesterov Acked-by: Srikar Dronamraju --- include/linux/uprobes.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h index 83742b91ff73..c2df6934fdc6 100644 --- a/include/linux/uprobes.h +++ b/include/linux/uprobes.h @@ -35,8 +35,17 @@ struct inode; # include #endif +enum uprobe_filter_ctx { + UPROBE_FILTER_REGISTER, + UPROBE_FILTER_UNREGISTER, + UPROBE_FILTER_MMAP, +}; + struct uprobe_consumer { int (*handler)(struct uprobe_consumer *self, struct pt_regs *regs); + bool (*filter)(struct uprobe_consumer *self, + enum uprobe_filter_ctx ctx, + struct mm_struct *mm); struct uprobe_consumer *next; }; -- cgit v1.2.3 From da1816b1caeccdff04531e763bb35d7caa3ed19f Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Sat, 29 Dec 2012 17:49:11 +0100 Subject: uprobes: Teach handler_chain() to filter out the probed task Currrently the are 2 problems with pre-filtering: 1. It is not possible to add/remove a task (mm) after uprobe_register() 2. A forked child inherits all breakpoints and uprobe_consumer can not control this. This patch does the first step to improve the filtering. handler_chain() removes the breakpoints installed by this uprobe from current->mm if all handlers return UPROBE_HANDLER_REMOVE. Note that handler_chain() relies on ->register_rwsem to avoid the race with uprobe_register/unregister which can add/del a consumer, or even remove and then insert the new uprobe at the same address. Perhaps we will add uprobe_apply_mm(uprobe, mm, is_register) and teach copy_mm() to do filter(UPROBE_FILTER_FORK), but I think this change makes sense anyway. Note: instead of checking the retcode from uc->handler, we could add uc->filter(UPROBE_FILTER_BPHIT). But I think this is not optimal to call 2 hooks in a row. This buys nothing, and if handler/filter do something nontrivial they will probably do the same work twice. Signed-off-by: Oleg Nesterov Acked-by: Srikar Dronamraju --- include/linux/uprobes.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h index c2df6934fdc6..95d0002efda5 100644 --- a/include/linux/uprobes.h +++ b/include/linux/uprobes.h @@ -35,6 +35,9 @@ struct inode; # include #endif +#define UPROBE_HANDLER_REMOVE 1 +#define UPROBE_HANDLER_MASK 1 + enum uprobe_filter_ctx { UPROBE_FILTER_REGISTER, UPROBE_FILTER_UNREGISTER, -- cgit v1.2.3 From f22c1bb6b4706be3502b378cb14564449b15f983 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Sat, 2 Feb 2013 16:27:52 +0100 Subject: perf: Introduce hw_perf_event->tp_target and ->tp_list sys_perf_event_open()->perf_init_event(event) is called before find_get_context(event), this means that event->ctx == NULL when class->reg(TRACE_REG_PERF_REGISTER/OPEN) is called and thus it can't know if this event is per-task or system-wide. This patch adds hw_perf_event->tp_target for PERF_TYPE_TRACEPOINT, this is analogous to PERF_TYPE_BREAKPOINT/bp_target we already have. The patch also moves ->bp_target up so that it can overlap with the new member, this can help the compiler to generate the better code. trace_uprobe_register() will use it for prefiltering to avoid the unnecessary breakpoints in mm's we do not want to trace. ->tp_target doesn't have its own reference, but we can rely on the fact that either sys_perf_event_open() holds a reference, or it is equal to event->ctx->task. So this pointer is always valid until free_event(). Also add the "struct list_head tp_list" into this union. It is not strictly necessary, but it can simplify the next changes and we can add it for free. Signed-off-by: Oleg Nesterov --- include/linux/perf_event.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 42adf012145d..e47ee462c2f2 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -135,16 +135,21 @@ struct hw_perf_event { struct { /* software */ struct hrtimer hrtimer; }; + struct { /* tracepoint */ + struct task_struct *tp_target; + /* for tp_event->class */ + struct list_head tp_list; + }; #ifdef CONFIG_HAVE_HW_BREAKPOINT struct { /* breakpoint */ - struct arch_hw_breakpoint info; - struct list_head bp_list; /* * Crufty hack to avoid the chicken and egg * problem hw_breakpoint has with context * creation and event initalization. */ struct task_struct *bp_target; + struct arch_hw_breakpoint info; + struct list_head bp_list; }; #endif }; -- cgit v1.2.3 From bdf8647c44766590ed02f9a84a450a796558b753 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Sun, 3 Feb 2013 19:21:12 +0100 Subject: uprobes: Introduce uprobe_apply() Currently it is not possible to change the filtering constraints after uprobe_register(), so a consumer can not, say, start to trace a task/mm which was previously filtered out, or remove the no longer needed bp's. Introduce uprobe_apply() which simply does register_for_each_vma() again to consult uprobe_consumer->filter() and install/remove the breakpoints. The only complication is that register_for_each_vma() can no longer assume that uprobe->consumers should be consulter if is_register == T, so we change it to accept "struct uprobe_consumer *new" instead. Unlike uprobe_register(), uprobe_apply(true) doesn't do "unregister" if register_for_each_vma() fails, it is up to caller to handle the error. Note: we probably need to cleanup the current interface, it is strange that uprobe_apply/unregister need inode/offset. We should either change uprobe_register() to return "struct uprobe *", or add a private ->uprobe member in uprobe_consumer. And in the long term uprobe_apply() should take a single argument, uprobe or consumer, even "bool add" should go away. Signed-off-by: Oleg Nesterov --- include/linux/uprobes.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h index 95d0002efda5..02b83db8e2c5 100644 --- a/include/linux/uprobes.h +++ b/include/linux/uprobes.h @@ -101,6 +101,7 @@ extern int __weak set_swbp(struct arch_uprobe *aup, struct mm_struct *mm, unsign extern int __weak set_orig_insn(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long vaddr); extern bool __weak is_swbp_insn(uprobe_opcode_t *insn); extern int uprobe_register(struct inode *inode, loff_t offset, struct uprobe_consumer *uc); +extern int uprobe_apply(struct inode *inode, loff_t offset, struct uprobe_consumer *uc, bool); extern void uprobe_unregister(struct inode *inode, loff_t offset, struct uprobe_consumer *uc); extern int uprobe_mmap(struct vm_area_struct *vma); extern void uprobe_munmap(struct vm_area_struct *vma, unsigned long start, unsigned long end); @@ -124,6 +125,11 @@ uprobe_register(struct inode *inode, loff_t offset, struct uprobe_consumer *uc) { return -ENOSYS; } +static inline int +uprobe_apply(struct inode *inode, loff_t offset, struct uprobe_consumer *uc, bool add) +{ + return -ENOSYS; +} static inline void uprobe_unregister(struct inode *inode, loff_t offset, struct uprobe_consumer *uc) { -- cgit v1.2.3 From 343d9c283c9847da043fda3e76e3197f27b667dd Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Fri, 8 Feb 2013 13:00:22 -0500 Subject: jbd2: add tracepoints which provide per-handle statistics Handles which stay open a long time are problematic when it comes time to close down a transaction so it can be committed. These tracepoints will help us determine which ones are the problematic ones, and to validate whether changes makes things better or worse. Signed-off-by: "Theodore Ts'o" --- include/linux/jbd2.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index 24db7256a5ff..fa5fea17b619 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -400,6 +400,11 @@ struct jbd2_journal_handle unsigned int h_sync: 1; /* sync-on-close */ unsigned int h_jdata: 1; /* force data journaling */ unsigned int h_aborted: 1; /* fatal error on handle */ + unsigned int h_type: 8; /* for handle statistics */ + unsigned int h_line_no: 16; /* for handle statistics */ + + unsigned long h_start_jiffies; + unsigned int h_requested_credits; #ifdef CONFIG_DEBUG_LOCK_ALLOC struct lockdep_map h_lockdep_map; @@ -1071,7 +1076,8 @@ static inline handle_t *journal_current_handle(void) */ extern handle_t *jbd2_journal_start(journal_t *, int nblocks); -extern handle_t *jbd2__journal_start(journal_t *, int nblocks, gfp_t gfp_mask); +extern handle_t *jbd2__journal_start(journal_t *, int nblocks, gfp_t gfp_mask, + unsigned int type, unsigned int line_no); extern int jbd2_journal_restart(handle_t *, int nblocks); extern int jbd2__journal_restart(handle_t *, int nblocks, gfp_t gfp_mask); extern int jbd2_journal_extend (handle_t *, int nblocks); -- cgit v1.2.3 From 4c190e2f913f038c9c91ee63b59cd037260ba353 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Wed, 6 Feb 2013 08:28:55 -0500 Subject: sunrpc: trim off trailing checksum before returning decrypted or integrity authenticated buffer When GSSAPI integrity signatures are in use, or when we're using GSSAPI privacy with the v2 token format, there is a trailing checksum on the xdr_buf that is returned. It's checked during the authentication stage, and afterward nothing cares about it. Ordinarily, it's not a problem since the XDR code generally ignores it, but it will be when we try to compute a checksum over the buffer to help prevent XID collisions in the duplicate reply cache. Fix the code to trim off the checksums after verifying them. Note that in unwrap_integ_data, we must avoid trying to reverify the checksum if the request was deferred since it will no longer be present when it's revisited. Signed-off-by: Jeff Layton --- include/linux/sunrpc/xdr.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h index 224d06047e45..15f9204ee70b 100644 --- a/include/linux/sunrpc/xdr.h +++ b/include/linux/sunrpc/xdr.h @@ -152,6 +152,7 @@ xdr_adjust_iovec(struct kvec *iov, __be32 *p) extern void xdr_shift_buf(struct xdr_buf *, size_t); extern void xdr_buf_from_iov(struct kvec *, struct xdr_buf *); extern int xdr_buf_subsegment(struct xdr_buf *, struct xdr_buf *, unsigned int, unsigned int); +extern void xdr_buf_trim(struct xdr_buf *, unsigned int); extern int xdr_buf_read_netobj(struct xdr_buf *, struct xdr_netobj *, unsigned int); extern int read_bytes_from_xdr_buf(struct xdr_buf *, unsigned int, void *, unsigned int); extern int write_bytes_to_xdr_buf(struct xdr_buf *, unsigned int, void *, unsigned int); -- cgit v1.2.3 From e5e67305885eb12849b5475764b0542f03dc2b59 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Fri, 8 Feb 2013 10:17:15 +0000 Subject: skbuff: Move definition of NETDEV_FRAG_PAGE_MAX_SIZE In order to address the fact that some devices cannot support the full 32K frag size we need to have the value accessible somewhere so that we can use it to do comparisons against what the device can support. As such I am moving the values out of skbuff.c and into skbuff.h. Signed-off-by: Alexander Duyck Signed-off-by: David S. Miller --- include/linux/skbuff.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 0259b719bebf..d7573c37a51d 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1832,6 +1832,10 @@ static inline void __skb_queue_purge(struct sk_buff_head *list) kfree_skb(skb); } +#define NETDEV_FRAG_PAGE_MAX_ORDER get_order(32768) +#define NETDEV_FRAG_PAGE_MAX_SIZE (PAGE_SIZE << NETDEV_FRAG_PAGE_MAX_ORDER) +#define NETDEV_PAGECNT_MAX_BIAS NETDEV_FRAG_PAGE_MAX_SIZE + extern void *netdev_alloc_frag(unsigned int fragsz); extern struct sk_buff *__netdev_alloc_skb(struct net_device *dev, -- cgit v1.2.3 From d6d3c4e656513dcea61ce900f0ecb9ca820ee7cd Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 6 Feb 2013 15:30:56 -0500 Subject: OF: convert devtree lock from rw_lock to raw spinlock With the locking cleanup in place (from "OF: Fixup resursive locking code paths"), we can now do the conversion from the rw_lock to a raw spinlock as required for preempt-rt. The previous cleanup and this conversion were originally separate since they predated when mainline got raw spinlock (in commit c2f21ce2e31286a "locking: Implement new raw_spinlock"). So, at that point in time, the cleanup was considered plausible for mainline, but not this conversion. In any case, we've kept them separate as it makes for easier review and better bisection. Signed-off-by: Thomas Gleixner [PG: taken from preempt-rt, update subject & add a commit log] Signed-off-by: Paul Gortmaker Signed-off-by: Rob Herring --- include/linux/of.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index 5ebcc5c8e423..bb35c423b1f9 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -92,7 +92,7 @@ static inline void of_node_put(struct device_node *node) { } extern struct device_node *of_allnodes; extern struct device_node *of_chosen; extern struct device_node *of_aliases; -extern rwlock_t devtree_lock; +extern raw_spinlock_t devtree_lock; static inline bool of_have_populated_dt(void) { -- cgit v1.2.3 From 84e345e4e209cbe796c88fa2ad1732d7121ec100 Mon Sep 17 00:00:00 2001 From: Prarit Bhargava Date: Fri, 8 Feb 2013 17:59:53 -0500 Subject: time, Fix setting of hardware clock in NTP code At init time, if the system time is "warped" forward in warp_clock() it will differ from the hardware clock by sys_tz.tz_minuteswest. This time difference is not taken into account when ntp updates the hardware clock, and this causes the system time to jump forward by this offset every reboot. The kernel must take this offset into account when writing the system time to the hardware clock in the ntp code. This patch adds persistent_clock_is_local which indicates that an offset has been applied in warp_clock() and accounts for the "warp" before writing the hardware clock. x86 does not have this problem as rtc writes are software limited to a +/-15 minute window relative to the current rtc time. Other arches, such as powerpc, however do a full synchronization of the system time to the rtc and will see this problem. [v2]: generated against tip/timers/core Signed-off-by: Prarit Bhargava Cc: John Stultz Cc: Thomas Gleixner Signed-off-by: John Stultz --- include/linux/time.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/time.h b/include/linux/time.h index 476e1d7b2c37..a3ab6a814a9c 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -128,6 +128,7 @@ static inline bool has_persistent_clock(void) extern void read_persistent_clock(struct timespec *ts); extern void read_boot_clock(struct timespec *ts); +extern int persistent_clock_is_local; extern int update_persistent_clock(struct timespec now); void timekeeping_init(void); extern int timekeeping_suspended; -- cgit v1.2.3 From 91ffbabfd9ae6b9bfef02bb1e0fbba451c7289a7 Mon Sep 17 00:00:00 2001 From: Denis CIOCCA Date: Thu, 7 Feb 2013 09:46:00 +0000 Subject: iio:common: added allocate and deallocate trigger functions when trigger is disabled. This patch resolve a bugfix when driver is compiled without trigger. Signed-off-by: Denis Ciocca Reported-by: Randy Dunlap Signed-off-by: Jonathan Cameron --- include/linux/iio/common/st_sensors.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/iio/common/st_sensors.h b/include/linux/iio/common/st_sensors.h index c40fdf537f69..1f86a97ab2e2 100644 --- a/include/linux/iio/common/st_sensors.h +++ b/include/linux/iio/common/st_sensors.h @@ -235,6 +235,16 @@ void st_sensors_deallocate_trigger(struct iio_dev *indio_dev); irqreturn_t st_sensors_trigger_handler(int irq, void *p); int st_sensors_get_buffer_element(struct iio_dev *indio_dev, u8 *buf); +#else +static inline int st_sensors_allocate_trigger(struct iio_dev *indio_dev, + const struct iio_trigger_ops *trigger_ops) +{ + return 0; +} +static inline void st_sensors_deallocate_trigger(struct iio_dev *indio_dev) +{ + return; +} #endif int st_sensors_init_sensor(struct iio_dev *indio_dev); -- cgit v1.2.3 From 6d9eecd418afb2c12e5db5be3d72f0f1df43bdd9 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Wed, 9 Jan 2013 17:31:00 +0000 Subject: spi: Add helper functions for setting up transfers Quite often the pattern used for setting up and transferring a synchronous SPI transaction looks very much like the following: struct spi_message msg; struct spi_transfer xfers[] = { ... }; spi_message_init(&msg); spi_message_add_tail(&xfers[0], &msg); ... spi_message_add_tail(&xfers[ARRAY_SIZE(xfers) - 1], &msg); ret = spi_sync(&msg); This patch adds two new helper functions for handling this case. The first helper function spi_message_init_with_transfers() takes a spi_message and an array of spi_transfers. It will initialize the message and then call spi_message_add_tail() for each transfer in the array. E.g. the following spi_message_init(&msg); spi_message_add_tail(&xfers[0], &msg); ... spi_message_add_tail(&xfers[ARRAY_SIZE(xfers) - 1], &msg); can be rewritten as spi_message_init_with_transfers(&msg, xfers, ARRAY_SIZE(xfers)); The second function spi_sync_transfer() takes a SPI device and an array of spi_transfers. It will allocate a new spi_message (on the stack) and add all transfers in the array to the message. Finally it will call spi_sync() on the message. E.g. the follwing struct spi_message msg; struct spi_transfer xfers[] = { ... }; spi_message_init(&msg); spi_message_add_tail(&xfers[0], &msg); ... spi_message_add_tail(&xfers[ARRAY_SIZE(xfers) - 1], &msg); ret = spi_sync(spi, &msg); can be rewritten as struct spi_transfer xfers[] = { ... }; ret = spi_sync_transfer(spi, xfers, ARRAY_SIZE(xfers)); A coccinelle script to find such instances will follow. Signed-off-by: Lars-Peter Clausen Reviewed-by: Mark Brown Signed-off-by: Jonathan Cameron --- include/linux/spi/spi.h | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) (limited to 'include/linux') diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index f62918946d86..7dbe58642525 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -591,6 +591,26 @@ spi_transfer_del(struct spi_transfer *t) list_del(&t->transfer_list); } +/** + * spi_message_init_with_transfers - Initialize spi_message and append transfers + * @m: spi_message to be initialized + * @xfers: An array of spi transfers + * @num_xfers: Number of items in the xfer array + * + * This function initializes the given spi_message and adds each spi_transfer in + * the given array to the message. + */ +static inline void +spi_message_init_with_transfers(struct spi_message *m, +struct spi_transfer *xfers, unsigned int num_xfers) +{ + unsigned int i; + + spi_message_init(m); + for (i = 0; i < num_xfers; ++i) + spi_message_add_tail(&xfers[i], m); +} + /* It's fine to embed message and transaction structures in other data * structures so long as you don't free them while they're in use. */ @@ -683,6 +703,30 @@ spi_read(struct spi_device *spi, void *buf, size_t len) return spi_sync(spi, &m); } +/** + * spi_sync_transfer - synchronous SPI data transfer + * @spi: device with which data will be exchanged + * @xfers: An array of spi_transfers + * @num_xfers: Number of items in the xfer array + * Context: can sleep + * + * Does a synchronous SPI data transfer of the given spi_transfer array. + * + * For more specific semantics see spi_sync(). + * + * It returns zero on success, else a negative error code. + */ +static inline int +spi_sync_transfer(struct spi_device *spi, struct spi_transfer *xfers, + unsigned int num_xfers) +{ + struct spi_message msg; + + spi_message_init_with_transfers(&msg, xfers, num_xfers); + + return spi_sync(spi, &msg); +} + /* this copies txbuf and rxbuf data; for small transfers only! */ extern int spi_write_then_read(struct spi_device *spi, const void *txbuf, unsigned n_tx, -- cgit v1.2.3 From aaa300262c5912bda34c9cf871719209eae01b06 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sat, 9 Feb 2013 10:49:00 +0000 Subject: iio:triggers Protect functions in triggers.h from use when not compiled Also include a couple of forward defs of struct iio_trigger and struct iio_trigger_ops to avoid doing this in each driver. Signed-off-by: Jonathan Cameron Reported-by: Randy Dunlap Acked-by: Denis Ciocca --- include/linux/iio/trigger.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/iio/trigger.h b/include/linux/iio/trigger.h index 20239da1d0f7..c66e0a96f6e8 100644 --- a/include/linux/iio/trigger.h +++ b/include/linux/iio/trigger.h @@ -12,6 +12,7 @@ #ifndef _IIO_TRIGGER_H_ #define _IIO_TRIGGER_H_ +#ifdef CONFIG_IIO_TRIGGER struct iio_subirq { bool enabled; }; @@ -117,4 +118,8 @@ irqreturn_t iio_trigger_generic_data_rdy_poll(int irq, void *private); __printf(1, 2) struct iio_trigger *iio_trigger_alloc(const char *fmt, ...); void iio_trigger_free(struct iio_trigger *trig); +#else +struct iio_trigger; +struct iio_trigger_ops; +#endif #endif /* _IIO_TRIGGER_H_ */ -- cgit v1.2.3 From b6e96d0067d81f6a300bedee661b5ece8164e210 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Sat, 9 Feb 2013 16:29:20 -0500 Subject: jbd2: use module parameters instead of debugfs for jbd_debug There are multiple reasons to move away from debugfs. First of all, we are only using it for a single parameter, and it is much more complicated to set up (some 30 lines of code compared to 3), and one more thing that might fail while loading the jbd2 module. Secondly, as a module paramter it can be specified as a boot option if jbd2 is built into the kernel, or as a parameter when the module is loaded, and it can also be manipulated dynamically under /sys/module/jbd2/parameters/jbd2_debug. So it is more flexible. Ultimately we want to move away from using jbd_debug() towards tracepoints, but for now this is still a useful simplification of the code base. Signed-off-by: "Theodore Ts'o" --- include/linux/jbd2.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index fa5fea17b619..50e5a5e6a712 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -20,7 +20,6 @@ #ifndef __KERNEL__ #include "jfs_compat.h" #define JBD2_DEBUG -#define jfs_debug jbd_debug #else #include @@ -57,7 +56,7 @@ * CONFIG_JBD2_DEBUG is on. */ #define JBD2_EXPENSIVE_CHECKING -extern u8 jbd2_journal_enable_debug; +extern ushort jbd2_journal_enable_debug; #define jbd_debug(n, f, a...) \ do { \ -- cgit v1.2.3 From 7e73c5ae6e7991a6c01f6d096ff8afaef4458c36 Mon Sep 17 00:00:00 2001 From: Zhang Rui Date: Wed, 6 Feb 2013 13:00:36 +0100 Subject: PM: Introduce suspend state PM_SUSPEND_FREEZE PM_SUSPEND_FREEZE state is a general state that does not need any platform specific support, it equals frozen processes + suspended devices + idle processors. Compared with PM_SUSPEND_MEMORY, PM_SUSPEND_FREEZE saves less power because the system is still in a running state. PM_SUSPEND_FREEZE has less resume latency because it does not touch BIOS, and the processors are in idle state. Compared with RTPM/idle, PM_SUSPEND_FREEZE saves more power as 1. the processor has longer sleep time because processes are frozen. The deeper c-state the processor supports, more power saving we can get. 2. PM_SUSPEND_FREEZE uses system suspend code path, thus we can get more power saving from the devices that does not have good RTPM support. This state is useful for 1) platforms that do not have STR, or have a broken STR. 2) platforms that have an extremely low power idle state, which can be used to replace STR. The following describes how PM_SUSPEND_FREEZE state works. 1. echo freeze > /sys/power/state 2. the processes are frozen. 3. all the devices are suspended. 4. all the processors are blocked by a wait queue 5. all the processors idles and enters (Deep) c-state. 6. an interrupt fires. 7. a processor is woken up and handles the irq. 8. if it is a general event, a) the irq handler runs and quites. b) goto step 4. 9. if it is a real wake event, say, power button pressing, keyboard touch, mouse moving, a) the irq handler runs and activate the wakeup source b) wakeup_source_activate() notifies the wait queue. c) system starts resuming from PM_SUSPEND_FREEZE 10. all the devices are resumed. 11. all the processes are unfrozen. 12. system is back to working. Known Issue: The wakeup of this new PM_SUSPEND_FREEZE state may behave differently from the previous suspend state. Take ACPI platform for example, there are some GPEs that only enabled when the system is in sleep state, to wake the system backk from S3/S4. But we are not touching these GPEs during transition to PM_SUSPEND_FREEZE. This means we may lose some wake event. But on the other hand, as we do not disable all the Interrupts during PM_SUSPEND_FREEZE, we may get some extra "wakeup" Interrupts, that are not available for S3/S4. The patches has been tested on an old Sony laptop, and here are the results: Average Power: 1. RPTM/idle for half an hour: 14.8W, 12.6W, 14.1W, 12.5W, 14.4W, 13.2W, 12.9W 2. Freeze for half an hour: 11W, 10.4W, 9.4W, 11.3W 10.5W 3. RTPM/idle for three hours: 11.6W 4. Freeze for three hours: 10W 5. Suspend to Memory: 0.5~0.9W Average Resume Latency: 1. RTPM/idle with a black screen: (From pressing keyboard to screen back) Less than 0.2s 2. Freeze: (From pressing power button to screen back) 2.50s 3. Suspend to Memory: (From pressing power button to screen back) 4.33s >From the results, we can see that all the platforms should benefit from this patch, even if it does not have Low Power S0. Signed-off-by: Zhang Rui Signed-off-by: Rafael J. Wysocki --- include/linux/suspend.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 0c808d7fa579..d4e3f16d5e89 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -34,8 +34,10 @@ static inline void pm_restore_console(void) typedef int __bitwise suspend_state_t; #define PM_SUSPEND_ON ((__force suspend_state_t) 0) -#define PM_SUSPEND_STANDBY ((__force suspend_state_t) 1) +#define PM_SUSPEND_FREEZE ((__force suspend_state_t) 1) +#define PM_SUSPEND_STANDBY ((__force suspend_state_t) 2) #define PM_SUSPEND_MEM ((__force suspend_state_t) 3) +#define PM_SUSPEND_MIN PM_SUSPEND_FREEZE #define PM_SUSPEND_MAX ((__force suspend_state_t) 4) enum suspend_stat_step { @@ -192,6 +194,7 @@ struct platform_suspend_ops { */ extern void suspend_set_ops(const struct platform_suspend_ops *ops); extern int suspend_valid_only_mem(suspend_state_t state); +extern void freeze_wake(void); /** * arch_suspend_disable_irqs - disable IRQs for suspend @@ -217,6 +220,7 @@ extern int pm_suspend(suspend_state_t state); static inline void suspend_set_ops(const struct platform_suspend_ops *ops) {} static inline int pm_suspend(suspend_state_t state) { return -ENOSYS; } +static inline void freeze_wake(void) {} #endif /* !CONFIG_SUSPEND */ /* struct pbe is used for creating lists of pages that should be restored -- cgit v1.2.3 From 957d1282bb8c07e682e142b9237cd9fcb8348a0b Mon Sep 17 00:00:00 2001 From: Li Fei Date: Fri, 1 Feb 2013 08:56:03 +0000 Subject: suspend: enable freeze timeout configuration through sys At present, the value of timeout for freezing is 20s, which is meaningless in case that one thread is frozen with mutex locked and another thread is trying to lock the mutex, as this time of freezing will fail unavoidably. And if there is no new wakeup event registered, the system will waste at most 20s for such meaningless trying of freezing. With this patch, the value of timeout can be configured to smaller value, so such meaningless trying of freezing will be aborted in earlier time, and later freezing can be also triggered in earlier time. And more power will be saved. In normal case on mobile phone, it costs real little time to freeze processes. On some platform, it only costs about 20ms to freeze user space processes and 10ms to freeze kernel freezable threads. Signed-off-by: Liu Chuansheng Signed-off-by: Li Fei Signed-off-by: Rafael J. Wysocki --- include/linux/freezer.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/freezer.h b/include/linux/freezer.h index e4238ceaa4d6..e70df40d84f6 100644 --- a/include/linux/freezer.h +++ b/include/linux/freezer.h @@ -12,6 +12,11 @@ extern atomic_t system_freezing_cnt; /* nr of freezing conds in effect */ extern bool pm_freezing; /* PM freezing in effect */ extern bool pm_nosig_freezing; /* PM nosig freezing in effect */ +/* + * Timeout for stopping processes + */ +extern unsigned int freeze_timeout_msecs; + /* * Check if a process has been frozen */ -- cgit v1.2.3 From 710a03e9349f027cf2d77559973fc06076a4042a Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Tue, 15 Jan 2013 16:37:56 +0000 Subject: ARM: ux500: remove irq_base property from platform_data AB8500 GPIO no longer handles its GPIO IRQs. Instead, the AB8500 core driver has taken back the responsibility. Prior to this happening, the AB8500 GPIO driver provided a set of virtual IRQs which were used as a pass-through. These virtual IRQs had a base of MOP500_AB8500_VIR_GPIO_IRQ_BASE, which was passed though pdata. We don't need to do this anymore, so we're pulling out the property from the structure. Cc: arm@kernel.org Acked-by: Olof Johansson Signed-off-by: Lee Jones Signed-off-by: Linus Walleij --- include/linux/mfd/abx500/ab8500-gpio.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/abx500/ab8500-gpio.h b/include/linux/mfd/abx500/ab8500-gpio.h index e8c8281e194a..172b2f201ae0 100644 --- a/include/linux/mfd/abx500/ab8500-gpio.h +++ b/include/linux/mfd/abx500/ab8500-gpio.h @@ -16,7 +16,6 @@ struct abx500_gpio_platform_data { int gpio_base; - u32 irq_base; }; enum abx500_gpio_pull_updown { -- cgit v1.2.3 From 09a642b78523e9f4c5970c806ad218aa3de31551 Mon Sep 17 00:00:00 2001 From: Ge Gao Date: Sat, 2 Feb 2013 00:26:00 +0000 Subject: Invensense MPU6050 Device Driver. This the basic functional Invensense MPU6050 Device driver. Signed-off-by: Ge Gao Reviewed-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- include/linux/platform_data/invensense_mpu6050.h | 31 ++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 include/linux/platform_data/invensense_mpu6050.h (limited to 'include/linux') diff --git a/include/linux/platform_data/invensense_mpu6050.h b/include/linux/platform_data/invensense_mpu6050.h new file mode 100644 index 000000000000..ad3aa7b95f35 --- /dev/null +++ b/include/linux/platform_data/invensense_mpu6050.h @@ -0,0 +1,31 @@ +/* +* Copyright (C) 2012 Invensense, Inc. +* +* This software is licensed under the terms of the GNU General Public +* License version 2, as published by the Free Software Foundation, and +* may be copied, distributed, and modified under those terms. +* +* This program is distributed in the hope that it will be useful, +* but WITHOUT ANY WARRANTY; without even the implied warranty of +* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +* GNU General Public License for more details. +*/ + +#ifndef __INV_MPU6050_PLATFORM_H_ +#define __INV_MPU6050_PLATFORM_H_ + +/** + * struct inv_mpu6050_platform_data - Platform data for the mpu driver + * @orientation: Orientation matrix of the chip + * + * Contains platform specific information on how to configure the MPU6050 to + * work on this platform. The orientation matricies are 3x3 rotation matricies + * that are applied to the data to rotate from the mounting orientation to the + * platform orientation. The values must be one of 0, 1, or -1 and each row and + * column should have exactly 1 non-zero value. + */ +struct inv_mpu6050_platform_data { + __s8 orientation[9]; +}; + +#endif -- cgit v1.2.3 From 095c3752e673c0ba039a2f67fd867297fde75ae7 Mon Sep 17 00:00:00 2001 From: Andreas Larsson Date: Tue, 29 Jan 2013 15:53:41 +0100 Subject: spi: Document cs_gpios and cs_gpio in kernel-doc This adds missing kernel-doc entries for cs_gpios in struct spi_master and cs_gpio in struct spi_device. Signed-off-by: Andreas Larsson [grant.likely: tweaked the language of the descriptions] Signed-off-by: Grant Likely --- include/linux/spi/spi.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index f62918946d86..30e9c50a5e20 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -57,6 +57,8 @@ extern struct bus_type spi_bus_type; * @modalias: Name of the driver to use with this device, or an alias * for that name. This appears in the sysfs "modalias" attribute * for driver coldplugging, and in uevents used for hotplugging + * @cs_gpio: gpio number of the chipselect line (optional, -EINVAL when + * when not using a GPIO line) * * A @spi_device is used to interchange data between an SPI slave * (usually a discrete chip) and CPU memory. @@ -258,6 +260,9 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * @unprepare_transfer_hardware: there are currently no more messages on the * queue so the subsystem notifies the driver that it may relax the * hardware by issuing this call + * @cs_gpios: Array of GPIOs to use as chip select lines; one per CS + * number. Any individual value may be -EINVAL for CS lines that + * are not GPIOs (driven by the SPI controller itself). * * Each SPI master controller can communicate with one or more @spi_device * children. These make a small bus, sharing MOSI, MISO and SCK signals -- cgit v1.2.3 From d021c344051af91f42c5ba9fdedc176740cbd238 Mon Sep 17 00:00:00 2001 From: Andy King Date: Wed, 6 Feb 2013 14:23:56 +0000 Subject: VSOCK: Introduce VM Sockets VM Sockets allows communication between virtual machines and the hypervisor. User level applications both in a virtual machine and on the host can use the VM Sockets API, which facilitates fast and efficient communication between guest virtual machines and their host. A socket address family, designed to be compatible with UDP and TCP at the interface level, is provided. Today, VM Sockets is used by various VMware Tools components inside the guest for zero-config, network-less access to VMware host services. In addition to this, VMware's users are using VM Sockets for various applications, where network access of the virtual machine is restricted or non-existent. Examples of this are VMs communicating with device proxies for proprietary hardware running as host applications and automated testing of applications running within virtual machines. The VMware VM Sockets are similar to other socket types, like Berkeley UNIX socket interface. The VM Sockets module supports both connection-oriented stream sockets like TCP, and connectionless datagram sockets like UDP. The VM Sockets protocol family is defined as "AF_VSOCK" and the socket operations split for SOCK_DGRAM and SOCK_STREAM. For additional information about the use of VM Sockets, please refer to the VM Sockets Programming Guide available at: https://www.vmware.com/support/developer/vmci-sdk/ Signed-off-by: George Zhang Signed-off-by: Dmitry Torokhov Signed-off-by: Andy king Signed-off-by: David S. Miller --- include/linux/socket.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/socket.h b/include/linux/socket.h index 9a546ff853dc..2b9f74b0ffea 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -178,7 +178,8 @@ struct ucred { #define AF_CAIF 37 /* CAIF sockets */ #define AF_ALG 38 /* Algorithm sockets */ #define AF_NFC 39 /* NFC sockets */ -#define AF_MAX 40 /* For now.. */ +#define AF_VSOCK 40 /* vSockets */ +#define AF_MAX 41 /* For now.. */ /* Protocol families, same as address families. */ #define PF_UNSPEC AF_UNSPEC @@ -221,6 +222,7 @@ struct ucred { #define PF_CAIF AF_CAIF #define PF_ALG AF_ALG #define PF_NFC AF_NFC +#define PF_VSOCK AF_VSOCK #define PF_MAX AF_MAX /* Maximum queue length specifiable by listen. */ -- cgit v1.2.3 From febf018d22347b5df94066bca05d0c11a84e839d Mon Sep 17 00:00:00 2001 From: David Ward Date: Fri, 8 Feb 2013 17:17:06 +0000 Subject: net/802: Implement Multiple Registration Protocol (MRP) Initial implementation of the Multiple Registration Protocol (MRP) from IEEE 802.1Q-2011, based on the existing implementation of the Generic Attribute Registration Protocol (GARP). Signed-off-by: David Ward Acked-by: Patrick McHardy Signed-off-by: David S. Miller --- include/linux/netdevice.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index ab2774eb49e8..25bd46f52877 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1290,6 +1290,8 @@ struct net_device { }; /* GARP */ struct garp_port __rcu *garp_port; + /* MRP */ + struct mrp_port __rcu *mrp_port; /* class/net/name entry */ struct device dev; -- cgit v1.2.3 From 9350393239153c4a98cbed4d69b9ed81e37d5e74 Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Sun, 10 Feb 2013 15:57:38 +1030 Subject: virtio: make config_ops const It is just a table of function pointers, make it const for cleanliness and security reasons. Signed-off-by: Stephen Hemminger Signed-off-by: Rusty Russell --- include/linux/virtio.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/virtio.h b/include/linux/virtio.h index cf8adb1f5b2c..eb34cf774473 100644 --- a/include/linux/virtio.h +++ b/include/linux/virtio.h @@ -78,7 +78,7 @@ struct virtio_device { int index; struct device dev; struct virtio_device_id id; - struct virtio_config_ops *config; + const struct virtio_config_ops *config; struct list_head vqs; /* Note that this is a Linux set_bit-style bitmap. */ unsigned long features[1]; -- cgit v1.2.3 From 7a905b1485adf863607b5fc9e32a3fa3838bcc23 Mon Sep 17 00:00:00 2001 From: Takuya Yoshikawa Date: Thu, 7 Feb 2013 18:55:57 +0900 Subject: KVM: Remove user_alloc from struct kvm_memory_slot This field was needed to differentiate memory slots created by the new API, KVM_SET_USER_MEMORY_REGION, from those by the old equivalent, KVM_SET_MEMORY_REGION, whose support was dropped long before: commit b74a07beed0e64bfba413dcb70dd6749c57f43dc KVM: Remove kernel-allocated memory regions Although we also have private memory slots to which KVM allocates memory with vm_mmap(), !user_alloc slots in other words, the slot id should be enough for differentiating them. Note: corresponding function parameters will be removed later. Reviewed-by: Marcelo Tosatti Signed-off-by: Takuya Yoshikawa Signed-off-by: Gleb Natapov --- include/linux/kvm_host.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 0350e0d5e031..722cae78bbc4 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -273,7 +273,6 @@ struct kvm_memory_slot { unsigned long userspace_addr; u32 flags; short id; - bool user_alloc; }; static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) -- cgit v1.2.3 From 5d9ab708200fefc3ec6e4454c65584d14ce716b0 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Tue, 5 Feb 2013 10:13:38 +0000 Subject: extcon: arizona: Clear _trig_sts bits after jack detection It is important to clear the wake trigger status bits otherwise DCVDD will be held high independent of the state of the LDOENA line. Signed-off-by: Charles Keepax Signed-off-by: Mark Brown --- include/linux/mfd/arizona/registers.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/arizona/registers.h b/include/linux/mfd/arizona/registers.h index 79e9dd4073d8..188d89abd963 100644 --- a/include/linux/mfd/arizona/registers.h +++ b/include/linux/mfd/arizona/registers.h @@ -5267,6 +5267,14 @@ /* * R3408 (0xD50) - AOD wkup and trig */ +#define ARIZONA_MICD_CLAMP_FALL_TRIG_STS 0x0080 /* MICD_CLAMP_FALL_TRIG_STS */ +#define ARIZONA_MICD_CLAMP_FALL_TRIG_STS_MASK 0x0080 /* MICD_CLAMP_FALL_TRIG_STS */ +#define ARIZONA_MICD_CLAMP_FALL_TRIG_STS_SHIFT 7 /* MICD_CLAMP_FALL_TRIG_STS */ +#define ARIZONA_MICD_CLAMP_FALL_TRIG_STS_WIDTH 1 /* MICD_CLAMP_FALL_TRIG_STS */ +#define ARIZONA_MICD_CLAMP_RISE_TRIG_STS 0x0040 /* MICD_CLAMP_RISE_TRIG_STS */ +#define ARIZONA_MICD_CLAMP_RISE_TRIG_STS_MASK 0x0040 /* MICD_CLAMP_RISE_TRIG_STS */ +#define ARIZONA_MICD_CLAMP_RISE_TRIG_STS_SHIFT 6 /* MICD_CLAMP_RISE_TRIG_STS */ +#define ARIZONA_MICD_CLAMP_RISE_TRIG_STS_WIDTH 1 /* MICD_CLAMP_RISE_TRIG_STS */ #define ARIZONA_GP5_FALL_TRIG_STS 0x0020 /* GP5_FALL_TRIG_STS */ #define ARIZONA_GP5_FALL_TRIG_STS_MASK 0x0020 /* GP5_FALL_TRIG_STS */ #define ARIZONA_GP5_FALL_TRIG_STS_SHIFT 5 /* GP5_FALL_TRIG_STS */ -- cgit v1.2.3 From 41875e388401ad97c33252d5fa39d52e0b70ee9b Mon Sep 17 00:00:00 2001 From: Sujit Reddy Thumma Date: Tue, 4 Dec 2012 17:06:19 +0530 Subject: mmc: sdio: Fix SDIO 3.0 UHS-I initialization sequence According to UHS-I initialization sequence for SDIO 3.0 cards, the host must set bit[24] (S18R) of OCR register during OCR handshake to know whether the SDIO card is capable of doing 1.8V I/O. Signed-off-by: Sujit Reddy Thumma Signed-off-by: Subhash Jadavani Reviewed-by: Johan Rudholm Reviewed-by: Ulf Hansson Signed-off-by: Chris Ball --- include/linux/mmc/host.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 61a10c17aabd..c89a1bb87fa5 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -434,6 +434,14 @@ static inline int mmc_boot_partition_access(struct mmc_host *host) return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC); } +static inline int mmc_host_uhs(struct mmc_host *host) +{ + return host->caps & + (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | + MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | + MMC_CAP_UHS_DDR50); +} + #ifdef CONFIG_MMC_CLKGATE void mmc_host_clk_hold(struct mmc_host *host); void mmc_host_clk_release(struct mmc_host *host); -- cgit v1.2.3 From 2220eedfd7aea69008173a224975e10284fbe854 Mon Sep 17 00:00:00 2001 From: Konstantin Dorfman Date: Mon, 14 Jan 2013 14:28:17 -0500 Subject: mmc: fix async request mechanism for sequential read scenarios When current request is running on the bus and if next request fetched by mmcqd is NULL, mmc context (mmcqd thread) gets blocked until the current request completes. This means that if new request comes in while the mmcqd thread is blocked, this new request can not be prepared in parallel to current ongoing request. This may result in delaying the new request execution and increase it's latency. This change allows to wake up the MMC thread on new request arrival. Now once the MMC thread is woken up, a new request can be fetched and prepared in parallel to the current running request which means this new request can be started immediately after the current running request completes. With this change read throughput is improved by 16%. Signed-off-by: Konstantin Dorfman Reviewed-by: Seungwon Jeon Signed-off-by: Chris Ball --- include/linux/mmc/card.h | 12 ++++++++++++ include/linux/mmc/core.h | 3 ++- include/linux/mmc/host.h | 17 +++++++++++++++++ 3 files changed, 31 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 5c69315d60cc..be2500a49925 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -187,6 +187,18 @@ struct sdio_func_tuple; #define SDIO_MAX_FUNCS 7 +enum mmc_blk_status { + MMC_BLK_SUCCESS = 0, + MMC_BLK_PARTIAL, + MMC_BLK_CMD_ERR, + MMC_BLK_RETRY, + MMC_BLK_ABORT, + MMC_BLK_DATA_ERR, + MMC_BLK_ECC_ERR, + MMC_BLK_NOMEDIUM, + MMC_BLK_NEW_REQUEST, +}; + /* The number of MMC physical partitions. These consist of: * boot partitions (2), general purpose partitions (4) in MMC v4.4. */ diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h index 5bf7c2274fcb..495d1336149c 100644 --- a/include/linux/mmc/core.h +++ b/include/linux/mmc/core.h @@ -120,6 +120,7 @@ struct mmc_data { s32 host_cookie; /* host private data */ }; +struct mmc_host; struct mmc_request { struct mmc_command *sbc; /* SET_BLOCK_COUNT for multiblock */ struct mmc_command *cmd; @@ -128,9 +129,9 @@ struct mmc_request { struct completion completion; void (*done)(struct mmc_request *);/* completion function */ + struct mmc_host *host; }; -struct mmc_host; struct mmc_card; struct mmc_async_req; diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index c89a1bb87fa5..523d570f58ad 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -170,6 +170,22 @@ struct mmc_slot { void *handler_priv; }; +/** + * mmc_context_info - synchronization details for mmc context + * @is_done_rcv wake up reason was done request + * @is_new_req wake up reason was new request + * @is_waiting_last_req mmc context waiting for single running request + * @wait wait queue + * @lock lock to protect data fields + */ +struct mmc_context_info { + bool is_done_rcv; + bool is_new_req; + bool is_waiting_last_req; + wait_queue_head_t wait; + spinlock_t lock; +}; + struct regulator; struct mmc_supply { @@ -331,6 +347,7 @@ struct mmc_host { struct dentry *debugfs_root; struct mmc_async_req *areq; /* active async req */ + struct mmc_context_info context_info; /* async synchronization info */ #ifdef CONFIG_FAIL_MMC_REQUEST struct fault_attr fail_mmc_request; -- cgit v1.2.3 From 7c7945a8f971e0b9cbdd7684ee106de768a0e474 Mon Sep 17 00:00:00 2001 From: Christoffer Dall Date: Wed, 23 Jan 2013 13:18:03 -0500 Subject: ARM: gic: add missing distributor defintions Add missing register map offsets for the distributor and rename GIC_DIST_ACTIVE_BIT to GIC_DIST_ACTIVE_SET to be consistent. Reviewed-by: Will Deacon Signed-off-by: Christoffer Dall Signed-off-by: Marc Zyngier --- include/linux/irqchip/arm-gic.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/irqchip/arm-gic.h b/include/linux/irqchip/arm-gic.h index a67ca55e6f4e..9509e8785cad 100644 --- a/include/linux/irqchip/arm-gic.h +++ b/include/linux/irqchip/arm-gic.h @@ -20,11 +20,13 @@ #define GIC_DIST_CTRL 0x000 #define GIC_DIST_CTR 0x004 +#define GIC_DIST_IGROUP 0x080 #define GIC_DIST_ENABLE_SET 0x100 #define GIC_DIST_ENABLE_CLEAR 0x180 #define GIC_DIST_PENDING_SET 0x200 #define GIC_DIST_PENDING_CLEAR 0x280 -#define GIC_DIST_ACTIVE_BIT 0x300 +#define GIC_DIST_ACTIVE_SET 0x300 +#define GIC_DIST_ACTIVE_CLEAR 0x380 #define GIC_DIST_PRI 0x400 #define GIC_DIST_TARGET 0x800 #define GIC_DIST_CONFIG 0xc00 -- cgit v1.2.3 From fdf77a72ec110572ac033d499c8be8b389c05740 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Mon, 21 Jan 2013 19:36:11 -0500 Subject: ARM: gic: define GICH offsets for VGIC support The GICH_* constants are defined by the GIC HW spec, and even though they only be used by KVM to begin with, define them generically in gic.h. Reviewed-by: Will Deacon Signed-off-by: Christoffer Dall Signed-off-by: Marc Zyngier --- include/linux/irqchip/arm-gic.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irqchip/arm-gic.h b/include/linux/irqchip/arm-gic.h index 9509e8785cad..ef61d80946be 100644 --- a/include/linux/irqchip/arm-gic.h +++ b/include/linux/irqchip/arm-gic.h @@ -32,6 +32,31 @@ #define GIC_DIST_CONFIG 0xc00 #define GIC_DIST_SOFTINT 0xf00 +#define GICH_HCR 0x0 +#define GICH_VTR 0x4 +#define GICH_VMCR 0x8 +#define GICH_MISR 0x10 +#define GICH_EISR0 0x20 +#define GICH_EISR1 0x24 +#define GICH_ELRSR0 0x30 +#define GICH_ELRSR1 0x34 +#define GICH_APR 0xf0 +#define GICH_LR0 0x100 + +#define GICH_HCR_EN (1 << 0) +#define GICH_HCR_UIE (1 << 1) + +#define GICH_LR_VIRTUALID (0x3ff << 0) +#define GICH_LR_PHYSID_CPUID_SHIFT (10) +#define GICH_LR_PHYSID_CPUID (7 << GICH_LR_PHYSID_CPUID_SHIFT) +#define GICH_LR_STATE (3 << 28) +#define GICH_LR_PENDING_BIT (1 << 28) +#define GICH_LR_ACTIVE_BIT (1 << 29) +#define GICH_LR_EOI (1 << 19) + +#define GICH_MISR_EOI (1 << 0) +#define GICH_MISR_U (1 << 1) + struct device_node; extern struct irq_chip gic_arch_extn; -- cgit v1.2.3 From a96ab03917dcf4c9477d03b31e8d74779bca1074 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Thu, 24 Jan 2013 13:39:43 +0000 Subject: ARM: gic: add __ASSEMBLY__ guard to C definitions The GIC include file being used by some of the KVM assembly code, wrap the C definitions with a #ifdef __ASSEMBLY__ guard. Signed-off-by: Marc Zyngier --- include/linux/irqchip/arm-gic.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/irqchip/arm-gic.h b/include/linux/irqchip/arm-gic.h index ef61d80946be..3fd8e4290a1c 100644 --- a/include/linux/irqchip/arm-gic.h +++ b/include/linux/irqchip/arm-gic.h @@ -57,6 +57,8 @@ #define GICH_MISR_EOI (1 << 0) #define GICH_MISR_U (1 << 1) +#ifndef __ASSEMBLY__ + struct device_node; extern struct irq_chip gic_arch_extn; @@ -72,4 +74,6 @@ static inline void gic_init(unsigned int nr, int start, gic_init_bases(nr, start, dist, cpu, 0, NULL); } +#endif /* __ASSEMBLY */ + #endif -- cgit v1.2.3 From 2c5e89338493882719f8d138f8f2717ee9a04153 Mon Sep 17 00:00:00 2001 From: Hannes Frederic Sowa Date: Sun, 10 Feb 2013 03:50:18 +0000 Subject: ipv6: by default join ff01::1 and in case of forwarding ff01::2 and ff05:2 Cc: Erik Hugne Cc: YOSHIFUJI Hideaki Signed-off-by: Hannes Frederic Sowa Signed-off-by: David S. Miller --- include/linux/in6.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/in6.h b/include/linux/in6.h index a16e19349ec0..34edf1f6c9a3 100644 --- a/include/linux/in6.h +++ b/include/linux/in6.h @@ -36,4 +36,13 @@ extern const struct in6_addr in6addr_linklocal_allnodes; extern const struct in6_addr in6addr_linklocal_allrouters; #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \ { { { 0xff,2,0,0,0,0,0,0,0,0,0,0,0,0,0,2 } } } +extern const struct in6_addr in6addr_interfacelocal_allnodes; +#define IN6ADDR_INTERFACELOCAL_ALLNODES_INIT \ + { { { 0xff,1,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } } +extern const struct in6_addr in6addr_interfacelocal_allrouters; +#define IN6ADDR_INTERFACELOCAL_ALLROUTERS_INIT \ + { { { 0xff,1,0,0,0,0,0,0,0,0,0,0,0,0,0,2 } } } +extern const struct in6_addr in6addr_sitelocal_allrouters; +#define IN6ADDR_SITELOCAL_ALLROUTERS_INIT \ + { { { 0xff,5,0,0,0,0,0,0,0,0,0,0,0,0,0,2 } } } #endif -- cgit v1.2.3 From 57fa8273a246d6abbbfdc995da6293b0040807d8 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Fri, 8 Feb 2013 18:51:05 -0500 Subject: cpuidle: remove vestage definition of cpuidle_state_usage.driver_data This field is no longer used. Signed-off-by: Len Brown Acked-by: Daniel Lezcano --- include/linux/cpuidle.h | 22 ---------------------- 1 file changed, 22 deletions(-) (limited to 'include/linux') diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 24cd1037b6d6..480c14dc1ddd 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -32,8 +32,6 @@ struct cpuidle_driver; ****************************/ struct cpuidle_state_usage { - void *driver_data; - unsigned long long disable; unsigned long long usage; unsigned long long time; /* in US */ @@ -62,26 +60,6 @@ struct cpuidle_state { #define CPUIDLE_DRIVER_FLAGS_MASK (0xFFFF0000) -/** - * cpuidle_get_statedata - retrieves private driver state data - * @st_usage: the state usage statistics - */ -static inline void *cpuidle_get_statedata(struct cpuidle_state_usage *st_usage) -{ - return st_usage->driver_data; -} - -/** - * cpuidle_set_statedata - stores private driver state data - * @st_usage: the state usage statistics - * @data: the private data - */ -static inline void -cpuidle_set_statedata(struct cpuidle_state_usage *st_usage, void *data) -{ - st_usage->driver_data = data; -} - struct cpuidle_device { unsigned int registered:1; unsigned int enabled:1; -- cgit v1.2.3 From 2cde6acd49daca58b96f1fbc697492825511ad31 Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Mon, 11 Feb 2013 10:25:30 +0000 Subject: netpoll: Fix __netpoll_rcu_free so that it can hold the rtnl lock __netpoll_rcu_free is used to free netpoll structures when the rtnl_lock is already held. The mechanism is used to asynchronously call __netpoll_cleanup outside of the holding of the rtnl_lock, so as to avoid deadlock. Unfortunately, __netpoll_cleanup modifies pointers (dev->np), which means the rtnl_lock must be held while calling it. Further, it cannot be held, because rcu callbacks may be issued in softirq contexts, which cannot sleep. Fix this by converting the rcu callback to a work queue that is guaranteed to get scheduled in process context, so that we can hold the rtnl properly while calling __netpoll_cleanup Tested successfully by myself. Signed-off-by: Neil Horman CC: "David S. Miller" CC: Cong Wang CC: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/netpoll.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netpoll.h b/include/linux/netpoll.h index ab856d507b7e..9d7d8c64f7c8 100644 --- a/include/linux/netpoll.h +++ b/include/linux/netpoll.h @@ -32,7 +32,7 @@ struct netpoll { u8 remote_mac[ETH_ALEN]; struct list_head rx; /* rx_np list element */ - struct rcu_head rcu; + struct work_struct cleanup_work; }; struct netpoll_info { @@ -68,7 +68,7 @@ int netpoll_setup(struct netpoll *np); int netpoll_trap(void); void netpoll_set_trap(int trap); void __netpoll_cleanup(struct netpoll *np); -void __netpoll_free_rcu(struct netpoll *np); +void __netpoll_free_async(struct netpoll *np); void netpoll_cleanup(struct netpoll *np); int __netpoll_rx(struct sk_buff *skb, struct netpoll_info *npinfo); void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb, -- cgit v1.2.3 From 05ec260edecaf3dc214cff49d43b1ad9b2cbb710 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 7 Feb 2013 10:17:31 +0100 Subject: mfd: db8500-prcmu: update resource passing When trying to get rid of the cross-includes of from different drivers, so we can localize ASIC/CPU detection to the mach-ux500 folder, we run into the way the PRCMU handles base addresses and firmware detection. This patch updates the firmware version detection to pass the required information as platform data instead of relying on cpu_is_* macros. Now the PRCMU base address, the secondary TCDM area, the TCPM area and the IRQ are passed as resources instead of being grabbed from files. Incidentally this also removes part of the reliance on . Further it updates the firmware version detection, since the location of the firmware ID bytes in the designated memory are is now passed from the platform data instead. There is no reason not to include the nice split-off of a struct to hold the firmware information and a separate function to populate it. The patch actually rids the need to use the external db8500_prcmu_early_init call at all, but I'm keepin back that removal as I don't want the patch to be too big. Cc: arm@kernel.org Cc: Michel Jaoen Cc: Lee Jones Acked-by: Samuel Ortiz Acked-by: Loic Pallardy Acked-by: Fabio Baltieri Signed-off-by: Linus Walleij --- include/linux/mfd/db8500-prcmu.h | 14 ------------ include/linux/mfd/dbx500-prcmu.h | 46 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+), 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/db8500-prcmu.h b/include/linux/mfd/db8500-prcmu.h index a65deddede2f..77a46ae2fc17 100644 --- a/include/linux/mfd/db8500-prcmu.h +++ b/include/linux/mfd/db8500-prcmu.h @@ -487,20 +487,6 @@ struct prcmu_auto_pm_config { u8 sva_policy; }; -#define PRCMU_FW_PROJECT_U8500 2 -#define PRCMU_FW_PROJECT_U9500 4 -#define PRCMU_FW_PROJECT_U8500_C2 7 -#define PRCMU_FW_PROJECT_U9500_C2 11 -#define PRCMU_FW_PROJECT_U8520 13 -#define PRCMU_FW_PROJECT_U8420 14 - -struct prcmu_fw_version { - u8 project; - u8 api_version; - u8 func_version; - u8 errata; -}; - #ifdef CONFIG_MFD_DB8500_PRCMU void db8500_prcmu_early_init(void); diff --git a/include/linux/mfd/dbx500-prcmu.h b/include/linux/mfd/dbx500-prcmu.h index 155280642583..f8bac7cfc25f 100644 --- a/include/linux/mfd/dbx500-prcmu.h +++ b/include/linux/mfd/dbx500-prcmu.h @@ -12,6 +12,10 @@ #include #include +/* Offset for the firmware version within the TCPM */ +#define DB8500_PRCMU_FW_VERSION_OFFSET 0xA4 +#define DBX540_PRCMU_FW_VERSION_OFFSET 0xA8 + /* PRCMU Wakeup defines */ enum prcmu_wakeup_index { PRCMU_WAKEUP_INDEX_RTC, @@ -214,6 +218,48 @@ enum ddr_pwrst { DDR_PWR_STATE_OFFHIGHLAT = 0x03 }; +#define DB8500_PRCMU_LEGACY_OFFSET 0xDD4 + +struct prcmu_pdata +{ + bool enable_set_ddr_opp; + bool enable_ape_opp_100_voltage; + struct ab8500_platform_data *ab_platdata; + u32 version_offset; + u32 legacy_offset; + u32 adt_offset; +}; + +#define PRCMU_FW_PROJECT_U8500 2 +#define PRCMU_FW_PROJECT_U8400 3 +#define PRCMU_FW_PROJECT_U9500 4 /* Customer specific */ +#define PRCMU_FW_PROJECT_U8500_MBB 5 +#define PRCMU_FW_PROJECT_U8500_C1 6 +#define PRCMU_FW_PROJECT_U8500_C2 7 +#define PRCMU_FW_PROJECT_U8500_C3 8 +#define PRCMU_FW_PROJECT_U8500_C4 9 +#define PRCMU_FW_PROJECT_U9500_MBL 10 +#define PRCMU_FW_PROJECT_U8500_MBL 11 /* Customer specific */ +#define PRCMU_FW_PROJECT_U8500_MBL2 12 /* Customer specific */ +#define PRCMU_FW_PROJECT_U8520 13 +#define PRCMU_FW_PROJECT_U8420 14 +#define PRCMU_FW_PROJECT_A9420 20 +/* [32..63] 9540 and derivatives */ +#define PRCMU_FW_PROJECT_U9540 32 +/* [64..95] 8540 and derivatives */ +#define PRCMU_FW_PROJECT_L8540 64 +/* [96..126] 8580 and derivatives */ +#define PRCMU_FW_PROJECT_L8580 96 + +#define PRCMU_FW_PROJECT_NAME_LEN 20 +struct prcmu_fw_version { + u32 project; /* Notice, project shifted with 8 on ux540 */ + u8 api_version; + u8 func_version; + u8 errata; + char project_name[PRCMU_FW_PROJECT_NAME_LEN]; +}; + #include #if defined(CONFIG_UX500_SOC_DB8500) -- cgit v1.2.3 From a93bc0c6e07ed9bac44700280e65e2945d864fd4 Mon Sep 17 00:00:00 2001 From: Seiji Aguchi Date: Tue, 12 Feb 2013 13:04:41 -0800 Subject: efi_pstore: Introducing workqueue updating sysfs [Problem] efi_pstore creates sysfs entries, which enable users to access to NVRAM, in a write callback. If a kernel panic happens in an interrupt context, it may fail because it could sleep due to dynamic memory allocations during creating sysfs entries. [Patch Description] This patch removes sysfs operations from a write callback by introducing a workqueue updating sysfs entries which is scheduled after the write callback is called. Also, the workqueue is kicked in a just oops case. A system will go down in other cases such as panic, clean shutdown and emergency restart. And we don't need to create sysfs entries because there is no chance for users to access to them. efi_pstore will be robust against a kernel panic in an interrupt context with this patch. Signed-off-by: Seiji Aguchi Acked-by: Matt Fleming Signed-off-by: Tony Luck --- include/linux/efi.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/efi.h b/include/linux/efi.h index 8b84916dc671..d0c68aee0925 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -728,7 +728,8 @@ struct efivars { * 1) ->list - adds, removals, reads, writes * 2) ops.[gs]et_variable() calls. * It must not be held when creating sysfs entries or calling kmalloc. - * ops.get_next_variable() is only called from register_efivars(), + * ops.get_next_variable() is only called from register_efivars() + * or efivar_update_sysfs_entries(), * which is protected by the BKL, so that path is safe. */ spinlock_t lock; -- cgit v1.2.3 From d9ba8f9e6298af71ec1c1fd3d88c3ef68abd0ec3 Mon Sep 17 00:00:00 2001 From: Mugunthan V N Date: Mon, 11 Feb 2013 09:52:20 +0000 Subject: driver: net: ethernet: cpsw: dual emac interface implementation The CPSW switch can act as Dual EMAC by segregating the switch ports using VLAN and port VLAN as per the TRM description in 14.3.2.10.2 Dual Mac Mode Following CPSW components will be common for both the interfaces. * Interrupt source is common for both eth interfaces * Interrupt pacing is common for both interfaces * Hardware statistics is common for all the ports * CPDMA is common for both eth interface * CPTS is common for both the interface and it should not be enabled on both the interface as timestamping information doesn't contain port information. Constrains * Reserved VID of One port should not be used in other interface which will enable switching functionality * Same VID must not be used in both the interface which will enable switching functionality Signed-off-by: Mugunthan V N Signed-off-by: David S. Miller --- include/linux/platform_data/cpsw.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/cpsw.h b/include/linux/platform_data/cpsw.h index e962cfd552e3..798fb80b024b 100644 --- a/include/linux/platform_data/cpsw.h +++ b/include/linux/platform_data/cpsw.h @@ -21,6 +21,8 @@ struct cpsw_slave_data { char phy_id[MII_BUS_ID_SIZE]; int phy_if; u8 mac_addr[ETH_ALEN]; + u16 dual_emac_res_vlan; /* Reserved VLAN for DualEMAC */ + }; struct cpsw_platform_data { @@ -36,6 +38,7 @@ struct cpsw_platform_data { u32 rx_descs; /* Number of Rx Descriptios */ u32 mac_control; /* Mac control register */ u16 default_vlan; /* Def VLAN for ALE lookup in VLAN aware mode*/ + bool dual_emac; /* Enable Dual EMAC mode */ }; #endif /* __CPSW_H__ */ -- cgit v1.2.3 From 6e105e0593055dc4aae21df7bca3868045754148 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Sjur=20Br=C3=A6ndeland?= Date: Wed, 13 Feb 2013 15:52:36 +1030 Subject: virtio: Add module driver macro for virtio drivers. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add helper macro for drivers that don't do anything special in module init/exit. Signed-off-by: Sjur Brændeland Signed-off-by: Rusty Russell --- include/linux/virtio.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/virtio.h b/include/linux/virtio.h index eb34cf774473..ff6714e6d0f5 100644 --- a/include/linux/virtio.h +++ b/include/linux/virtio.h @@ -126,4 +126,13 @@ static inline struct virtio_driver *drv_to_virtio(struct device_driver *drv) int register_virtio_driver(struct virtio_driver *drv); void unregister_virtio_driver(struct virtio_driver *drv); + +/* module_virtio_driver() - Helper macro for drivers that don't do + * anything special in module init/exit. This eliminates a lot of + * boilerplate. Each module may only use this macro once, and + * calling it replaces module_init() and module_exit() + */ +#define module_virtio_driver(__virtio_driver) \ + module_driver(__virtio_driver, register_virtio_driver, \ + unregister_virtio_driver) #endif /* _LINUX_VIRTIO_H */ -- cgit v1.2.3 From bd69f73f2c81eed9a398708b8c4bb3409ba1b0f9 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Sun, 10 Feb 2013 22:57:21 +0000 Subject: of: Create function for counting number of phandles in a property This patch creates of_count_phandle_with_args(), a new function for counting the number of phandle+argument tuples in a given property. This is better than the existing method of parsing each phandle individually until parsing fails which is a horribly slow way to do the count. Tested on ARM using the selftest code. v3: - Rebased on top of selftest code cleanup patch v2: - fix bug where of_parse_phandle_with_args() could behave like _count_. - made of_gpio_named_count() into a static inline regardless of CONFIG_OF_GPIO Tested-by: Andreas Larsson Signed-off-by: Grant Likely Cc: Linus Walleij Cc: Rob Herring --- include/linux/of.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/of.h b/include/linux/of.h index b9e1b911f0eb..a0f129284948 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -277,6 +277,8 @@ extern struct device_node *of_parse_phandle(const struct device_node *np, extern int of_parse_phandle_with_args(const struct device_node *np, const char *list_name, const char *cells_name, int index, struct of_phandle_args *out_args); +extern int of_count_phandle_with_args(const struct device_node *np, + const char *list_name, const char *cells_name); extern void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align)); extern int of_alias_get_id(struct device_node *np, const char *stem); @@ -467,6 +469,13 @@ static inline int of_parse_phandle_with_args(struct device_node *np, return -ENOSYS; } +static inline int of_count_phandle_with_args(struct device_node *np, + const char *list_name, + const char *cells_name) +{ + return -ENOSYS; +} + static inline int of_alias_get_id(struct device_node *np, const char *stem) { return -ENOSYS; -- cgit v1.2.3 From e80beb27d2f81a1c3c8887e0e0a82d77bb392d28 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Tue, 12 Feb 2013 17:48:37 +0000 Subject: gpio: Make of_count_named_gpios() use new of_count_phandle_with_args() This patch replaces the horribly coded of_count_named_gpios() with a call to of_count_phandle_with_args() which is far more efficient. This also changes the return value of of_gpio_count() & of_gpio_named_count() from 'unsigned int' to 'int' so that it can return an error code. All the users of that function are fixed up to correctly handle a negative return value. v2: Split GPIO portion into a separate patch Tested-by: Andreas Larsson Signed-off-by: Grant Likely Cc: Linus Walleij Cc: Rob Herring --- include/linux/of_gpio.h | 40 +++++++++++++++++++++++----------------- 1 file changed, 23 insertions(+), 17 deletions(-) (limited to 'include/linux') diff --git a/include/linux/of_gpio.h b/include/linux/of_gpio.h index c454f5796747..a83dc6f5008e 100644 --- a/include/linux/of_gpio.h +++ b/include/linux/of_gpio.h @@ -50,9 +50,6 @@ static inline struct of_mm_gpio_chip *to_of_mm_gpio_chip(struct gpio_chip *gc) extern int of_get_named_gpio_flags(struct device_node *np, const char *list_name, int index, enum of_gpio_flags *flags); -extern unsigned int of_gpio_named_count(struct device_node *np, - const char* propname); - extern int of_mm_gpiochip_add(struct device_node *np, struct of_mm_gpio_chip *mm_gc); @@ -71,12 +68,6 @@ static inline int of_get_named_gpio_flags(struct device_node *np, return -ENOSYS; } -static inline unsigned int of_gpio_named_count(struct device_node *np, - const char* propname) -{ - return 0; -} - static inline int of_gpio_simple_xlate(struct gpio_chip *gc, const struct of_phandle_args *gpiospec, u32 *flags) @@ -90,22 +81,37 @@ static inline void of_gpiochip_remove(struct gpio_chip *gc) { } #endif /* CONFIG_OF_GPIO */ /** - * of_gpio_count - Count GPIOs for a device + * of_gpio_named_count() - Count GPIOs for a device * @np: device node to count GPIOs for + * @propname: property name containing gpio specifier(s) * * The function returns the count of GPIOs specified for a node. + * Note that the empty GPIO specifiers count too. Returns either + * Number of gpios defined in property, + * -EINVAL for an incorrectly formed gpios property, or + * -ENOENT for a missing gpios property * - * Note that the empty GPIO specifiers counts too. For example, - * + * Example: * gpios = <0 - * &pio1 1 2 + * &gpio1 1 2 * 0 - * &pio2 3 4>; + * &gpio2 3 4>; + * + * The above example defines four GPIOs, two of which are not specified. + * This function will return '4' + */ +static inline int of_gpio_named_count(struct device_node *np, const char* propname) +{ + return of_count_phandle_with_args(np, propname, "#gpio-cells"); +} + +/** + * of_gpio_count() - Count GPIOs for a device + * @np: device node to count GPIOs for * - * defines four GPIOs (so this function will return 4), two of which - * are not specified. + * Same as of_gpio_named_count, but hard coded to use the 'gpios' property */ -static inline unsigned int of_gpio_count(struct device_node *np) +static inline int of_gpio_count(struct device_node *np) { return of_gpio_named_count(np, "gpios"); } -- cgit v1.2.3 From 7f07863ec60f7d3dbeec5aff881ea074db3925ed Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Wed, 13 Feb 2013 13:12:35 +0200 Subject: ARM: OMAP: Consolidate OMAP USB-HS platform data (part 1/3) Let's have a single platform data structure for the OMAP's High-Speed USB host subsystem instead of having 3 separate ones i.e. one for board data, one for USB Host (UHH) module and one for USB-TLL module. This makes the code much simpler and avoids creating multiple copies of platform data. Part 1 touches platform headers Part 2 touches drivers Part 3 touches platform data Signed-off-by: Roger Quadros Reviewed-by: Felipe Balbi --- include/linux/platform_data/usb-omap.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/platform_data/usb-omap.h b/include/linux/platform_data/usb-omap.h index ef65b67c56c3..e697c85ad3bc 100644 --- a/include/linux/platform_data/usb-omap.h +++ b/include/linux/platform_data/usb-omap.h @@ -55,13 +55,17 @@ struct ohci_hcd_omap_platform_data { }; struct usbhs_omap_platform_data { - enum usbhs_omap_port_mode port_mode[OMAP3_HS_USB_PORTS]; + enum usbhs_omap_port_mode port_mode[OMAP3_HS_USB_PORTS]; + int reset_gpio_port[OMAP3_HS_USB_PORTS]; + struct regulator *regulator[OMAP3_HS_USB_PORTS]; struct ehci_hcd_omap_platform_data *ehci_data; struct ohci_hcd_omap_platform_data *ohci_data; /* OMAP3 <= ES2.1 have a single ulpi bypass control bit */ - unsigned single_ulpi_bypass:1; + unsigned single_ulpi_bypass:1; + unsigned es2_compatibility:1; + unsigned phy_reset:1; }; /*-------------------------------------------------------------------------*/ -- cgit v1.2.3 From ccac71a7f063ad31eb99fac37e95b70ff57f1354 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Thu, 8 Nov 2012 19:18:08 +0200 Subject: mfd: omap-usb-host: override number of ports from platform data Both OMAP4 and 5 exhibit the same revision ID in the REVISION register but they have different number of ports i.e. 2 and 3 respectively. So we can't rely on REVISION register for number of ports on OMAP5 and depend on platform data (or device tree) instead. Signed-off-by: Roger Quadros Reviewed-by: Felipe Balbi --- include/linux/platform_data/usb-omap.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/usb-omap.h b/include/linux/platform_data/usb-omap.h index e697c85ad3bc..fa579b4c666b 100644 --- a/include/linux/platform_data/usb-omap.h +++ b/include/linux/platform_data/usb-omap.h @@ -55,6 +55,7 @@ struct ohci_hcd_omap_platform_data { }; struct usbhs_omap_platform_data { + int nports; enum usbhs_omap_port_mode port_mode[OMAP3_HS_USB_PORTS]; int reset_gpio_port[OMAP3_HS_USB_PORTS]; struct regulator *regulator[OMAP3_HS_USB_PORTS]; -- cgit v1.2.3 From 64fd7401c5e4cf7c64452ecd9b700a55a5ebea50 Mon Sep 17 00:00:00 2001 From: Toshi Kani Date: Mon, 11 Feb 2013 22:33:20 +0000 Subject: ACPI: Remove the use of CONFIG_ACPI_CONTAINER_MODULE config ACPI_CONTAINER has been changed to bool (y/n), and its module option is no longer valid. So, remove the use of CONFIG_ACPI_CONTAINER_MODULE. Signed-off-by: Toshi Kani Signed-off-by: Rafael J. Wysocki --- include/linux/acpi.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index c6ccd9fa8f08..bcbdd7484e58 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -363,8 +363,7 @@ extern acpi_status acpi_pci_osc_control_set(acpi_handle handle, #if defined(CONFIG_ACPI_HOTPLUG_CPU) && \ (defined(CONFIG_ACPI_HOTPLUG_MEMORY) || \ defined(CONFIG_ACPI_HOTPLUG_MEMORY_MODULE)) && \ - (defined(CONFIG_ACPI_CONTAINER) || \ - defined(CONFIG_ACPI_CONTAINER_MODULE)) + defined(CONFIG_ACPI_CONTAINER) #define ACPI_HOTPLUG_OST #endif -- cgit v1.2.3 From d83f5901bc0cd7131a3b8534169ee889efc4c257 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Wed, 30 Jan 2013 19:21:14 -0800 Subject: coda: Restrict coda messages to the initial user namespace Remove the slight chance that uids and gids in coda messages will be interpreted in the wrong user namespace. - Only allow processes in the initial user namespace to open the coda character device to communicate with coda filesystems. - Explicitly convert the uids in the coda header into the initial user namespace. - In coda_vattr_to_attr make kuids and kgids from the initial user namespace uids and gids in struct coda_vattr that just came from userspace. - In coda_iattr_to_vattr convert kuids and kgids into uids and gids in the intial user namespace and store them in struct coda_vattr for sending to coda userspace programs. Nothing needs to be changed with mounts as coda does not support being mounted in anything other than the initial user namespace. Cc: Jan Harkes Signed-off-by: "Eric W. Biederman" --- include/linux/coda_psdev.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/coda_psdev.h b/include/linux/coda_psdev.h index 8031d6eef102..5b8721efa948 100644 --- a/include/linux/coda_psdev.h +++ b/include/linux/coda_psdev.h @@ -34,7 +34,7 @@ int venus_lookup(struct super_block *sb, struct CodaFid *fid, const char *name, int length, int *type, struct CodaFid *resfid); int venus_close(struct super_block *sb, struct CodaFid *fid, int flags, - vuid_t uid); + kuid_t uid); int venus_open(struct super_block *sb, struct CodaFid *fid, int flags, struct file **f); int venus_mkdir(struct super_block *sb, struct CodaFid *dirfid, -- cgit v1.2.3 From 7eaf040b720bc8c0ce5cd49151ca194ca2d56842 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 1 Feb 2013 16:31:17 -0800 Subject: sunrpc: Use kuid_t and kgid_t where appropriate Convert variables that store uids and gids to be of type kuid_t and kgid_t instead of type uid_t and gid_t. Cc: "J. Bruce Fields" Cc: Trond Myklebust Signed-off-by: "Eric W. Biederman" --- include/linux/sunrpc/auth.h | 7 ++++--- include/linux/sunrpc/svcauth.h | 4 ++-- 2 files changed, 6 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h index f25ba922baaf..58fda1c3c783 100644 --- a/include/linux/sunrpc/auth.h +++ b/include/linux/sunrpc/auth.h @@ -17,14 +17,15 @@ #include #include +#include /* size of the nodename buffer */ #define UNX_MAXNODENAME 32 /* Work around the lack of a VFS credential */ struct auth_cred { - uid_t uid; - gid_t gid; + kuid_t uid; + kgid_t gid; struct group_info *group_info; const char *principal; unsigned char machine_cred : 1; @@ -48,7 +49,7 @@ struct rpc_cred { unsigned long cr_flags; /* various flags */ atomic_t cr_count; /* ref count */ - uid_t cr_uid; + kuid_t cr_uid; /* per-flavor data */ }; diff --git a/include/linux/sunrpc/svcauth.h b/include/linux/sunrpc/svcauth.h index dd74084a9799..ff374ab30839 100644 --- a/include/linux/sunrpc/svcauth.h +++ b/include/linux/sunrpc/svcauth.h @@ -18,8 +18,8 @@ #include struct svc_cred { - uid_t cr_uid; - gid_t cr_gid; + kuid_t cr_uid; + kgid_t cr_gid; struct group_info *cr_group_info; u32 cr_flavor; /* pseudoflavor */ char *cr_principal; /* for gss */ -- cgit v1.2.3 From 54f834cd5501fb5fc801e4719a3ad0c894a3af2c Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 1 Feb 2013 14:16:29 -0800 Subject: nfs: Convert struct nfs_fattr to Use kuid_t and kgid_t Cc: "J. Bruce Fields" Cc: Trond Myklebust Signed-off-by: "Eric W. Biederman" --- include/linux/nfs_xdr.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 29adb12c7ecf..13441ddac33d 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -48,8 +48,8 @@ struct nfs_fattr { unsigned int valid; /* which fields are valid */ umode_t mode; __u32 nlink; - __u32 uid; - __u32 gid; + kuid_t uid; + kgid_t gid; dev_t rdev; __u64 size; union { -- cgit v1.2.3 From 9f309c86cf343c59c79d25d9bde5d4a895d2e81f Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 1 Feb 2013 03:21:47 -0800 Subject: nfs: Convert idmap to use kuids and kgids Convert nfs_map_name_to_uid to return a kuid_t value. Convert nfs_map_name_to_gid to return a kgid_t value. Convert nfs_map_uid_to_name to take a kuid_t paramater. Convert nfs_map_gid_to_name to take a kgid_t paramater. Tweak nfs_fattr_map_owner_to_name to use a kuid_t intermediate value. Tweak nfs_fattr_map_group_to_name to use a kgid_t intermediate value. Which makes these functions properly handle kuids and kgids, including erroring of the generated kuid or kgid is invalid. Cc: "J. Bruce Fields" Cc: Trond Myklebust Signed-off-by: "Eric W. Biederman" --- include/linux/nfs_idmap.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfs_idmap.h b/include/linux/nfs_idmap.h index 2dcef3ab58b6..0f4b79da6584 100644 --- a/include/linux/nfs_idmap.h +++ b/include/linux/nfs_idmap.h @@ -36,6 +36,7 @@ #ifndef NFS_IDMAP_H #define NFS_IDMAP_H +#include #include @@ -67,10 +68,10 @@ void nfs_fattr_init_names(struct nfs_fattr *fattr, void nfs_fattr_free_names(struct nfs_fattr *); void nfs_fattr_map_and_free_names(struct nfs_server *, struct nfs_fattr *); -int nfs_map_name_to_uid(const struct nfs_server *, const char *, size_t, __u32 *); -int nfs_map_group_to_gid(const struct nfs_server *, const char *, size_t, __u32 *); -int nfs_map_uid_to_name(const struct nfs_server *, __u32, char *, size_t); -int nfs_map_gid_to_group(const struct nfs_server *, __u32, char *, size_t); +int nfs_map_name_to_uid(const struct nfs_server *, const char *, size_t, kuid_t *); +int nfs_map_group_to_gid(const struct nfs_server *, const char *, size_t, kgid_t *); +int nfs_map_uid_to_name(const struct nfs_server *, kuid_t, char *, size_t); +int nfs_map_gid_to_group(const struct nfs_server *, kgid_t, char *, size_t); extern unsigned int nfs_idmap_cache_timeout; #endif /* NFS_IDMAP_H */ -- cgit v1.2.3 From ab8e4aee0a3f73d1b12e6d63b42075f0586ad4fd Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sat, 2 Feb 2013 05:18:08 -0800 Subject: nfsd: Handle kuids and kgids in the nfs4acl to posix_acl conversion In struct nfs4_ace remove the member who and replace it with an anonymous union holding who_uid and who_gid. Allowing typesafe storage uids and gids. Add a helper pace_gt for sorting posix_acl_entries. In struct posix_user_ace_state to replace uid with a union of kuid_t uid and kgid_t gid. Remove all initializations of the deprecated posic_acl_entry e_id field. Which is not present when user namespaces are enabled. Split find_uid into two functions find_uid and find_gid that work in a typesafe manner. In nfs4xdr update nfsd4_encode_fattr to deal with the changes in struct nfs4_ace. Rewrite nfsd4_encode_name to take a kuid_t and a kgid_t instead of a generic id and flag if it is a group or a uid. Replace the group flag with a test for a valid gid. Modify nfsd4_encode_user to take a kuid_t and call the modifed nfsd4_encode_name. Modify nfsd4_encode_group to take a kgid_t and call the modified nfsd4_encode_name. Modify nfsd4_encode_aclname to take an ace instead of taking the fields of an ace broken out. This allows it to detect if the ace is for a user or a group and to pass the appropriate value while still being typesafe. Cc: "J. Bruce Fields" Cc: Trond Myklebust Signed-off-by: "Eric W. Biederman" --- include/linux/nfs4.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index e111fa419a4e..7b8fc73810ad 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -13,6 +13,7 @@ #define _LINUX_NFS4_H #include +#include #include struct nfs4_ace { @@ -20,7 +21,10 @@ struct nfs4_ace { uint32_t flag; uint32_t access_mask; int whotype; - uid_t who; + union { + kuid_t who_uid; + kgid_t who_gid; + }; }; struct nfs4_acl { -- cgit v1.2.3 From 4c1e1b34d5c800ad3ac9a7e2805b0bea70ad2278 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sat, 2 Feb 2013 06:42:53 -0800 Subject: nfsd: Store ex_anon_uid and ex_anon_gid as kuids and kgids Cc: "J. Bruce Fields" Cc: Trond Myklebust Signed-off-by: "Eric W. Biederman" --- include/linux/nfsd/export.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/nfsd/export.h b/include/linux/nfsd/export.h index 24c139288db4..7898c997dfea 100644 --- a/include/linux/nfsd/export.h +++ b/include/linux/nfsd/export.h @@ -49,8 +49,8 @@ struct svc_export { struct auth_domain * ex_client; int ex_flags; struct path ex_path; - uid_t ex_anon_uid; - gid_t ex_anon_gid; + kuid_t ex_anon_uid; + kgid_t ex_anon_gid; int ex_fsid; unsigned char * ex_uuid; /* 16 byte fsid */ struct nfsd4_fs_locations ex_fslocs; -- cgit v1.2.3 From fd116066d966549211b41d929feea5474d57461b Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Wed, 13 Feb 2013 18:35:00 +0900 Subject: extcon: gpio: Rename filename of extcon-gpio.c according to kernel naming style Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham Signed-off-by: Greg Kroah-Hartman --- include/linux/extcon/extcon-gpio.h | 52 ++++++++++++++++++++++++++++++++++++++ include/linux/extcon/extcon_gpio.h | 52 -------------------------------------- 2 files changed, 52 insertions(+), 52 deletions(-) create mode 100644 include/linux/extcon/extcon-gpio.h delete mode 100644 include/linux/extcon/extcon_gpio.h (limited to 'include/linux') diff --git a/include/linux/extcon/extcon-gpio.h b/include/linux/extcon/extcon-gpio.h new file mode 100644 index 000000000000..2d8307f7d67d --- /dev/null +++ b/include/linux/extcon/extcon-gpio.h @@ -0,0 +1,52 @@ +/* + * External connector (extcon) class generic GPIO driver + * + * Copyright (C) 2012 Samsung Electronics + * Author: MyungJoo Ham + * + * based on switch class driver + * Copyright (C) 2008 Google, Inc. + * Author: Mike Lockwood + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * +*/ +#ifndef __EXTCON_GPIO_H__ +#define __EXTCON_GPIO_H__ __FILE__ + +#include + +/** + * struct gpio_extcon_platform_data - A simple GPIO-controlled extcon device. + * @name The name of this GPIO extcon device. + * @gpio Corresponding GPIO. + * @debounce Debounce time for GPIO IRQ in ms. + * @irq_flags IRQ Flags (e.g., IRQF_TRIGGER_LOW). + * @state_on print_state is overriden with state_on if attached. If Null, + * default method of extcon class is used. + * @state_off print_state is overriden with state_on if detached. If Null, + * default method of extcon class is used. + * + * Note that in order for state_on or state_off to be valid, both state_on + * and state_off should be not NULL. If at least one of them is NULL, + * the print_state is not overriden. + */ +struct gpio_extcon_platform_data { + const char *name; + unsigned gpio; + unsigned long debounce; + unsigned long irq_flags; + + /* if NULL, "0" or "1" will be printed */ + const char *state_on; + const char *state_off; +}; + +#endif /* __EXTCON_GPIO_H__ */ diff --git a/include/linux/extcon/extcon_gpio.h b/include/linux/extcon/extcon_gpio.h deleted file mode 100644 index 2d8307f7d67d..000000000000 --- a/include/linux/extcon/extcon_gpio.h +++ /dev/null @@ -1,52 +0,0 @@ -/* - * External connector (extcon) class generic GPIO driver - * - * Copyright (C) 2012 Samsung Electronics - * Author: MyungJoo Ham - * - * based on switch class driver - * Copyright (C) 2008 Google, Inc. - * Author: Mike Lockwood - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * -*/ -#ifndef __EXTCON_GPIO_H__ -#define __EXTCON_GPIO_H__ __FILE__ - -#include - -/** - * struct gpio_extcon_platform_data - A simple GPIO-controlled extcon device. - * @name The name of this GPIO extcon device. - * @gpio Corresponding GPIO. - * @debounce Debounce time for GPIO IRQ in ms. - * @irq_flags IRQ Flags (e.g., IRQF_TRIGGER_LOW). - * @state_on print_state is overriden with state_on if attached. If Null, - * default method of extcon class is used. - * @state_off print_state is overriden with state_on if detached. If Null, - * default method of extcon class is used. - * - * Note that in order for state_on or state_off to be valid, both state_on - * and state_off should be not NULL. If at least one of them is NULL, - * the print_state is not overriden. - */ -struct gpio_extcon_platform_data { - const char *name; - unsigned gpio; - unsigned long debounce; - unsigned long irq_flags; - - /* if NULL, "0" or "1" will be printed */ - const char *state_on; - const char *state_off; -}; - -#endif /* __EXTCON_GPIO_H__ */ -- cgit v1.2.3 From 513b032c98b4b9414aa4e9b4a315cb1bf0380101 Mon Sep 17 00:00:00 2001 From: George Spelvin Date: Sun, 10 Feb 2013 04:08:32 -0500 Subject: pps: Add pps_lookup_dev() function The PPS serial line discipline wants to attach a PPS device to a tty without changing the tty code to add a struct pps_device * pointer. Since the number of PPS devices in a typical system is generally very low (n=1 is by far the most common), it's practical to search the entire list of allocated pps devices. (We capture the timestamp before the lookup, so the timing isn't affected.) It is a bit ugly that this function, which is part of the in-kernel PPS API, has to be in pps.c as opposed to kapi,c, but that's not something that affects users. Signed-off-by: George Spelvin Acked-by: Rodolfo Giometti Cc: stable Signed-off-by: Greg Kroah-Hartman --- include/linux/pps_kernel.h | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pps_kernel.h b/include/linux/pps_kernel.h index 0cc45ae1afd5..7db3eb93a079 100644 --- a/include/linux/pps_kernel.h +++ b/include/linux/pps_kernel.h @@ -43,7 +43,7 @@ struct pps_source_info { int event, void *data); /* PPS echo function */ struct module *owner; - struct device *dev; + struct device *dev; /* Parent device for device_create */ }; struct pps_event_time { @@ -69,6 +69,7 @@ struct pps_device { wait_queue_head_t queue; /* PPS event queue */ unsigned int id; /* PPS source unique ID */ + void const *lookup_cookie; /* pps_lookup_dev only */ struct cdev cdev; struct device *dev; struct fasync_struct *async_queue; /* fasync method */ @@ -81,6 +82,16 @@ struct pps_device { extern struct device_attribute pps_attrs[]; +/* + * Internal functions. + * + * These are not actually part of the exported API, but this is a + * convenient header file to put them in. + */ + +extern int pps_register_cdev(struct pps_device *pps); +extern void pps_unregister_cdev(struct pps_device *pps); + /* * Exported functions */ @@ -88,10 +99,10 @@ extern struct device_attribute pps_attrs[]; extern struct pps_device *pps_register_source( struct pps_source_info *info, int default_params); extern void pps_unregister_source(struct pps_device *pps); -extern int pps_register_cdev(struct pps_device *pps); -extern void pps_unregister_cdev(struct pps_device *pps); extern void pps_event(struct pps_device *pps, struct pps_event_time *ts, int event, void *data); +/* Look up a pps device by magic cookie */ +struct pps_device *pps_lookup_dev(void const *cookie); static inline void timespec_to_pps_ktime(struct pps_ktime *kt, struct timespec ts) -- cgit v1.2.3 From 593fb1ae457aab28b392ac114f6e3358788da985 Mon Sep 17 00:00:00 2001 From: George Spelvin Date: Tue, 12 Feb 2013 02:00:43 -0500 Subject: pps: Move timestamp read into PPS code proper The PPS (Pulse-Per-Second) line discipline has developed a number of unhealthy attachments to core tty data and functions, ultimately leading to its breakage. The previous patches fixed the crashing. This one reduces coupling further by eliminating the timestamp parameter from the dcd_change ldisc method. This reduces header file linkage and makes the extension more generic, and the timestamp read is delayed only slightly, from just before the ldisc->ops->dcd_change method call to just after. Fix attendant build breakage in drivers/tty/n_tty.c drivers/tty/tty_buffer.c drivers/staging/speakup/selection.c drivers/staging/dgrp/dgrp_*.c Cc: William Hubbs Cc: Chris Brannon Cc: Kirk Reiser Cc: Samuel Thibault Signed-off-by: Peter Hurley Signed-off-by: George Spelvin Acked-by: Rodolfo Giometti Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_core.h | 1 - include/linux/tty_ldisc.h | 11 ++++------- 2 files changed, 4 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index d97142159e0f..87d4bbc773fc 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -29,7 +29,6 @@ #include #include #include -#include #include struct uart_port; diff --git a/include/linux/tty_ldisc.h b/include/linux/tty_ldisc.h index fb79dd8d1537..455a0d7bf220 100644 --- a/include/linux/tty_ldisc.h +++ b/include/linux/tty_ldisc.h @@ -100,16 +100,14 @@ * seek to perform this action quickly but should wait until * any pending driver I/O is completed. * - * void (*dcd_change)(struct tty_struct *tty, unsigned int status, - * struct pps_event_time *ts) + * void (*dcd_change)(struct tty_struct *tty, unsigned int status) * - * Tells the discipline that the DCD pin has changed its status and - * the relative timestamp. Pointer ts cannot be NULL. + * Tells the discipline that the DCD pin has changed its status. + * Used exclusively by the N_PPS (Pulse-Per-Second) line discipline. */ #include #include -#include #include struct tty_ldisc_ops { @@ -144,8 +142,7 @@ struct tty_ldisc_ops { void (*receive_buf)(struct tty_struct *, const unsigned char *cp, char *fp, int count); void (*write_wakeup)(struct tty_struct *); - void (*dcd_change)(struct tty_struct *, unsigned int, - struct pps_event_time *); + void (*dcd_change)(struct tty_struct *, unsigned int); struct module *owner; -- cgit v1.2.3 From ceaa1fef65a7c2e017b260b879b310dd24888083 Mon Sep 17 00:00:00 2001 From: Andrey Vagin Date: Mon, 11 Feb 2013 05:50:17 +0000 Subject: tcp: adding a per-socket timestamp offset This functionality is used for restoring tcp sockets. A tcp timestamp depends on how long a system has been running, so it's differ for each host. The solution is to set a per-socket offset. A per-socket offset for a TIME_WAIT socket is inherited from a proper tcp socket. tcp_request_sock doesn't have a timestamp offset, because the repair mode for them are not implemented. Cc: "David S. Miller" Cc: Alexey Kuznetsov Cc: James Morris Cc: Hideaki YOSHIFUJI Cc: Patrick McHardy Cc: Eric Dumazet Cc: Pavel Emelyanov Signed-off-by: Andrey Vagin Signed-off-by: David S. Miller --- include/linux/tcp.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 6d0d46138ae8..f28408c07dc2 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -162,6 +162,8 @@ struct tcp_sock { u32 rcv_tstamp; /* timestamp of last received ACK (for keepalives) */ u32 lsndtime; /* timestamp of last sent data packet (for restart window) */ + u32 tsoffset; /* timestamp offset */ + struct list_head tsq_node; /* anchor in tsq_tasklet.head list */ unsigned long tsq_flags; @@ -353,6 +355,7 @@ struct tcp_timewait_sock { u32 tw_rcv_nxt; u32 tw_snd_nxt; u32 tw_rcv_wnd; + u32 tw_ts_offset; u32 tw_ts_recent; long tw_ts_recent_stamp; #ifdef CONFIG_TCP_MD5SIG -- cgit v1.2.3 From c9af6db4c11ccc6c3e7f19bbc15d54023956f97c Mon Sep 17 00:00:00 2001 From: Pravin B Shelar Date: Mon, 11 Feb 2013 09:27:41 +0000 Subject: net: Fix possible wrong checksum generation. Patch cef401de7be8c4e (net: fix possible wrong checksum generation) fixed wrong checksum calculation but it broke TSO by defining new GSO type but not a netdev feature for that type. net_gso_ok() would not allow hardware checksum/segmentation offload of such packets without the feature. Following patch fixes TSO and wrong checksum. This patch uses same logic that Eric Dumazet used. Patch introduces new flag SKBTX_SHARED_FRAG if at least one frag can be modified by the user. but SKBTX_SHARED_FRAG flag is kept in skb shared info tx_flags rather than gso_type. tx_flags is better compared to gso_type since we can have skb with shared frag without gso packet. It does not link SHARED_FRAG to GSO, So there is no need to define netdev feature for this. Signed-off-by: Pravin B Shelar Signed-off-by: David S. Miller --- include/linux/skbuff.h | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index d7573c37a51d..9da99520ccd5 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -230,6 +230,13 @@ enum { /* generate wifi status information (where possible) */ SKBTX_WIFI_STATUS = 1 << 4, + + /* This indicates at least one fragment might be overwritten + * (as in vmsplice(), sendfile() ...) + * If we need to compute a TX checksum, we'll need to copy + * all frags to avoid possible bad checksum + */ + SKBTX_SHARED_FRAG = 1 << 5, }; /* @@ -307,13 +314,6 @@ enum { SKB_GSO_TCPV6 = 1 << 4, SKB_GSO_FCOE = 1 << 5, - - /* This indicates at least one fragment might be overwritten - * (as in vmsplice(), sendfile() ...) - * If we need to compute a TX checksum, we'll need to copy - * all frags to avoid possible bad checksum - */ - SKB_GSO_SHARED_FRAG = 1 << 6, }; #if BITS_PER_LONG > 32 @@ -2220,7 +2220,8 @@ static inline int skb_linearize(struct sk_buff *skb) */ static inline bool skb_has_shared_frag(const struct sk_buff *skb) { - return skb_shinfo(skb)->gso_type & SKB_GSO_SHARED_FRAG; + return skb_is_nonlinear(skb) && + skb_shinfo(skb)->tx_flags & SKBTX_SHARED_FRAG; } /** -- cgit v1.2.3 From 5488c753530b7b08437df6115a2c2c6156c2f0f6 Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Wed, 13 Feb 2013 14:54:30 -0500 Subject: pps: Fix build breakage from decoupling pps from tty Fixes: tree: git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-next head: bc80fbe46be7430487a45ad92841932bb2eaa3e6 commit: 593fb1ae457aab28b392ac114f6e3358788da985 pps: Move timestamp read into PPS code proper date: 78 minutes ago config: make ARCH=sparc defconfig All error/warnings: In file included from drivers/tty/serial/suncore.c:20:0: >> include/linux/sunserialcore.h:29:15: warning: 'struct device_node' declared inside parameter list [enabled by default] >> include/linux/sunserialcore.h:29:15: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default] >> include/linux/sunserialcore.h:31:18: warning: 'struct device_node' declared inside parameter list [enabled by default] >> drivers/tty/serial/suncore.c:55:5: error: conflicting types for 'sunserial_console_match' include/linux/sunserialcore.h:28:12: note: previous declaration of 'sunserial_console_match' was here >> drivers/tty/serial/suncore.c:83:1: error: conflicting types for 'sunserial_console_match' include/linux/sunserialcore.h:28:12: note: previous declaration of 'sunserial_console_match' was here >> drivers/tty/serial/suncore.c:85:6: error: conflicting types for 'sunserial_console_termios' include/linux/sunserialcore.h:30:13: note: previous declaration of 'sunserial_console_termios' was here Reported-by: kbuild test robot Cc: George Spelvin Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- include/linux/sunserialcore.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sunserialcore.h b/include/linux/sunserialcore.h index 68e7430bb0fe..dbe4d7fca1b8 100644 --- a/include/linux/sunserialcore.h +++ b/include/linux/sunserialcore.h @@ -13,6 +13,10 @@ #ifndef _SERIAL_SUN_H #define _SERIAL_SUN_H +#include +#include +#include + /* Serial keyboard defines for L1-A processing... */ #define SUNKBD_RESET 0xff #define SUNKBD_L1 0x01 -- cgit v1.2.3 From e3e5bc02d2365d3e09164fd9a559011399ca2a4f Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Tue, 12 Feb 2013 20:44:19 +0900 Subject: extcon: max8997: Move defined constant to header file This patch move defined constants to header file(max77693-private.h) because of mask/unmask selectively interrupt of MUIC device according to attribute of H/W board. Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- include/linux/mfd/max8997-private.h | 49 +++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h index 6ae21bf47d64..acf42e960320 100644 --- a/include/linux/mfd/max8997-private.h +++ b/include/linux/mfd/max8997-private.h @@ -194,6 +194,55 @@ enum max8997_muic_reg { MAX8997_MUIC_REG_END = 0xf, }; +/* MAX8997-MUIC STATUS1 register */ +#define STATUS1_ADC_SHIFT 0 +#define STATUS1_ADCLOW_SHIFT 5 +#define STATUS1_ADCERR_SHIFT 6 +#define STATUS1_ADC_MASK (0x1f << STATUS1_ADC_SHIFT) +#define STATUS1_ADCLOW_MASK (0x1 << STATUS1_ADCLOW_SHIFT) +#define STATUS1_ADCERR_MASK (0x1 << STATUS1_ADCERR_SHIFT) + +/* MAX8997-MUIC STATUS2 register */ +#define STATUS2_CHGTYP_SHIFT 0 +#define STATUS2_CHGDETRUN_SHIFT 3 +#define STATUS2_DCDTMR_SHIFT 4 +#define STATUS2_DBCHG_SHIFT 5 +#define STATUS2_VBVOLT_SHIFT 6 +#define STATUS2_CHGTYP_MASK (0x7 << STATUS2_CHGTYP_SHIFT) +#define STATUS2_CHGDETRUN_MASK (0x1 << STATUS2_CHGDETRUN_SHIFT) +#define STATUS2_DCDTMR_MASK (0x1 << STATUS2_DCDTMR_SHIFT) +#define STATUS2_DBCHG_MASK (0x1 << STATUS2_DBCHG_SHIFT) +#define STATUS2_VBVOLT_MASK (0x1 << STATUS2_VBVOLT_SHIFT) + +/* MAX8997-MUIC STATUS3 register */ +#define STATUS3_OVP_SHIFT 2 +#define STATUS3_OVP_MASK (0x1 << STATUS3_OVP_SHIFT) + +/* MAX8997-MUIC CONTROL1 register */ +#define COMN1SW_SHIFT 0 +#define COMP2SW_SHIFT 3 +#define COMN1SW_MASK (0x7 << COMN1SW_SHIFT) +#define COMP2SW_MASK (0x7 << COMP2SW_SHIFT) +#define CONTROL1_SW_MASK (COMP2SW_MASK | COMN1SW_MASK) + +#define CONTROL1_SW_USB ((1 << COMP2SW_SHIFT) \ + | (1 << COMN1SW_SHIFT)) +#define CONTROL1_SW_AUDIO ((2 << COMP2SW_SHIFT) \ + | (2 << COMN1SW_SHIFT)) +#define CONTROL1_SW_UART ((3 << COMP2SW_SHIFT) \ + | (3 << COMN1SW_SHIFT)) +#define CONTROL1_SW_OPEN ((0 << COMP2SW_SHIFT) \ + | (0 << COMN1SW_SHIFT)) + +#define MAX8997_ADC_GROUND 0x00 +#define MAX8997_ADC_MHL 0x01 +#define MAX8997_ADC_JIG_USB_1 0x18 +#define MAX8997_ADC_JIG_USB_2 0x19 +#define MAX8997_ADC_DESKDOCK 0x1a +#define MAX8997_ADC_JIG_UART 0x1c +#define MAX8997_ADC_CARDOCK 0x1d +#define MAX8997_ADC_OPEN 0x1f + enum max8997_haptic_reg { MAX8997_HAPTIC_REG_GENERAL = 0x00, MAX8997_HAPTIC_REG_CONF1 = 0x01, -- cgit v1.2.3 From 07c70503a420d48402b3859e2c1c4c847a130a8b Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Wed, 13 Feb 2013 08:42:37 +0900 Subject: extcon: max8997: Remove duplicate code related to set H/W line path Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- include/linux/mfd/max8997-private.h | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h index acf42e960320..010173a92274 100644 --- a/include/linux/mfd/max8997-private.h +++ b/include/linux/mfd/max8997-private.h @@ -223,7 +223,7 @@ enum max8997_muic_reg { #define COMP2SW_SHIFT 3 #define COMN1SW_MASK (0x7 << COMN1SW_SHIFT) #define COMP2SW_MASK (0x7 << COMP2SW_SHIFT) -#define CONTROL1_SW_MASK (COMP2SW_MASK | COMN1SW_MASK) +#define COMP_SW_MASK (COMP2SW_MASK | COMN1SW_MASK) #define CONTROL1_SW_USB ((1 << COMP2SW_SHIFT) \ | (1 << COMN1SW_SHIFT)) @@ -234,6 +234,23 @@ enum max8997_muic_reg { #define CONTROL1_SW_OPEN ((0 << COMP2SW_SHIFT) \ | (0 << COMN1SW_SHIFT)) +#define CONTROL2_LOWPWR_SHIFT (0) +#define CONTROL2_ADCEN_SHIFT (1) +#define CONTROL2_CPEN_SHIFT (2) +#define CONTROL2_SFOUTASRT_SHIFT (3) +#define CONTROL2_SFOUTORD_SHIFT (4) +#define CONTROL2_ACCDET_SHIFT (5) +#define CONTROL2_USBCPINT_SHIFT (6) +#define CONTROL2_RCPS_SHIFT (7) +#define CONTROL2_LOWPWR_MASK (0x1 << CONTROL2_LOWPWR_SHIFT) +#define CONTROL2_ADCEN_MASK (0x1 << CONTROL2_ADCEN_SHIFT) +#define CONTROL2_CPEN_MASK (0x1 << CONTROL2_CPEN_SHIFT) +#define CONTROL2_SFOUTASRT_MASK (0x1 << CONTROL2_SFOUTASRT_SHIFT) +#define CONTROL2_SFOUTORD_MASK (0x1 << CONTROL2_SFOUTORD_SHIFT) +#define CONTROL2_ACCDET_MASK (0x1 << CONTROL2_ACCDET_SHIFT) +#define CONTROL2_USBCPINT_MASK (0x1 << CONTROL2_USBCPINT_SHIFT) +#define CONTROL2_RCPS_MASK (0x1 << CONTROL2_RCPS_SHIFT) + #define MAX8997_ADC_GROUND 0x00 #define MAX8997_ADC_MHL 0x01 #define MAX8997_ADC_JIG_USB_1 0x18 -- cgit v1.2.3 From 027fcd50500fd87847891d5c2f341c1f002de3e8 Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Wed, 13 Feb 2013 08:50:00 +0900 Subject: extcon: max8997: Set default of ADC debounce time during initialization This patch set default of ADC Debounce Time(25ms) during probe step. Also, can possible change ADC Debounce Time according to H/W situation by using max8997_set_adc_debounce_time() Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- include/linux/mfd/max8997-private.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h index 010173a92274..cd37a92ccba9 100644 --- a/include/linux/mfd/max8997-private.h +++ b/include/linux/mfd/max8997-private.h @@ -251,6 +251,13 @@ enum max8997_muic_reg { #define CONTROL2_USBCPINT_MASK (0x1 << CONTROL2_USBCPINT_SHIFT) #define CONTROL2_RCPS_MASK (0x1 << CONTROL2_RCPS_SHIFT) +#define CONTROL3_JIGSET_SHIFT (0) +#define CONTROL3_BTLDSET_SHIFT (2) +#define CONTROL3_ADCDBSET_SHIFT (4) +#define CONTROL3_JIGSET_MASK (0x3 << CONTROL3_JIGSET_SHIFT) +#define CONTROL3_BTLDSET_MASK (0x3 << CONTROL3_BTLDSET_SHIFT) +#define CONTROL3_ADCDBSET_MASK (0x3 << CONTROL3_ADCDBSET_SHIFT) + #define MAX8997_ADC_GROUND 0x00 #define MAX8997_ADC_MHL 0x01 #define MAX8997_ADC_JIG_USB_1 0x18 -- cgit v1.2.3 From f73f6232af9131f7b6fc6e377267e4a441727eb3 Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Wed, 13 Feb 2013 12:05:42 +0900 Subject: extcon: max8997: Consolidate duplicate code for checking ADC/CHG cable type This patch make max8997_muic_get_cable_type() function to remove duplicate code for checking ADC/Charger cable type because almost internal function need to read adc/chg_type value of MUIC register. Also, remove *_detach() function, extcon-max8997 driver treat attach/detach operation of cable in max8997_*_handler() function. Lastly, this patch move defined constant in header file(include/ linux/mfd/max8997.h, max8997-private.h) because defined constant is only used in the 'extcon-max8997.c'. Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- include/linux/mfd/max8997-private.h | 9 --------- include/linux/mfd/max8997.h | 15 --------------- 2 files changed, 24 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h index cd37a92ccba9..fb465dfbb59e 100644 --- a/include/linux/mfd/max8997-private.h +++ b/include/linux/mfd/max8997-private.h @@ -258,15 +258,6 @@ enum max8997_muic_reg { #define CONTROL3_BTLDSET_MASK (0x3 << CONTROL3_BTLDSET_SHIFT) #define CONTROL3_ADCDBSET_MASK (0x3 << CONTROL3_ADCDBSET_SHIFT) -#define MAX8997_ADC_GROUND 0x00 -#define MAX8997_ADC_MHL 0x01 -#define MAX8997_ADC_JIG_USB_1 0x18 -#define MAX8997_ADC_JIG_USB_2 0x19 -#define MAX8997_ADC_DESKDOCK 0x1a -#define MAX8997_ADC_JIG_UART 0x1c -#define MAX8997_ADC_CARDOCK 0x1d -#define MAX8997_ADC_OPEN 0x1f - enum max8997_haptic_reg { MAX8997_HAPTIC_REG_GENERAL = 0x00, MAX8997_HAPTIC_REG_CONF1 = 0x01, diff --git a/include/linux/mfd/max8997.h b/include/linux/mfd/max8997.h index 1d4a4fe6ac33..65f8d6a3a608 100644 --- a/include/linux/mfd/max8997.h +++ b/include/linux/mfd/max8997.h @@ -78,21 +78,6 @@ struct max8997_regulator_data { struct device_node *reg_node; }; -enum max8997_muic_usb_type { - MAX8997_USB_HOST, - MAX8997_USB_DEVICE, -}; - -enum max8997_muic_charger_type { - MAX8997_CHARGER_TYPE_NONE = 0, - MAX8997_CHARGER_TYPE_USB, - MAX8997_CHARGER_TYPE_DOWNSTREAM_PORT, - MAX8997_CHARGER_TYPE_DEDICATED_CHG, - MAX8997_CHARGER_TYPE_500MA, - MAX8997_CHARGER_TYPE_1A, - MAX8997_CHARGER_TYPE_DEAD_BATTERY = 7, -}; - struct max8997_muic_reg_data { u8 addr; u8 data; -- cgit v1.2.3 From 685dc9a7dbfede28cc4a0fe4e65804194ec04fa5 Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Wed, 13 Feb 2013 15:04:15 +0900 Subject: extcon: max8997: Set default UART/USB path on probe This patch set default H/W line path according to platfomr data. The MAX8997 MUIC device can possibly set UART/USB or UART_AUX /USB_AUX to internal H/W line path of MUIC device. Namely, only one H/W line is used for two operation. For example, if H/W line path of MAX8997 device set UART/USB, micro usb cable is connected to AP(Application Processor) and if H/W line path set UART_AUX/USB_AUX, micro usb cable is connected to CP(Coprocessor). Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- include/linux/mfd/max8997.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/max8997.h b/include/linux/mfd/max8997.h index 65f8d6a3a608..2d2d67b6a393 100644 --- a/include/linux/mfd/max8997.h +++ b/include/linux/mfd/max8997.h @@ -92,6 +92,13 @@ struct max8997_muic_reg_data { struct max8997_muic_platform_data { struct max8997_muic_reg_data *init_data; int num_init_data; + + /* + * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB + * h/w path of COMP2/COMN1 on CONTROL1 register. + */ + int path_usb; + int path_uart; }; enum max8997_haptic_motor_type { -- cgit v1.2.3 From af5eb1a13273447c5708cd5425696f3b6f79dd9b Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Wed, 13 Feb 2013 15:10:00 +0900 Subject: extcon: max8997: Use workqueue to check cable state after completing boot of platform This patch use delayed workqueue to check cable state after a certain time. If extcon-max8997 driver check cable state during booting of platform, this couldn't send the correct notification of cable state to extcon consumer. Alwasys, this driver should check cable state after the completion of platform initialization Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- include/linux/mfd/max8997.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/max8997.h b/include/linux/mfd/max8997.h index 2d2d67b6a393..cf815577bd68 100644 --- a/include/linux/mfd/max8997.h +++ b/include/linux/mfd/max8997.h @@ -93,6 +93,9 @@ struct max8997_muic_platform_data { struct max8997_muic_reg_data *init_data; int num_init_data; + /* Check cable state after certain delay */ + int detcable_delay_ms; + /* * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB * h/w path of COMP2/COMN1 on CONTROL1 register. -- cgit v1.2.3 From 60c185f059c88ad4b9b170b1f9322e3adcccca07 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Thu, 3 Jan 2013 16:16:58 +0530 Subject: mfd: palmas: Add APIs to access the Palmas' registers Palmas register set is divided into different blocks (base and offset) and hence different i2c addresses. The i2c address offsets are derived from base address of block of registers. Add inline APIs to access the Palma's registers which takes the base of register block and register offset. The i2c address offset is derived from the base address of register blocks. Signed-off-by: Laxman Dewangan Signed-off-by: Samuel Ortiz --- include/linux/mfd/palmas.h | 52 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h index 29f6616e12f0..a4d13d7cd001 100644 --- a/include/linux/mfd/palmas.h +++ b/include/linux/mfd/palmas.h @@ -2789,4 +2789,56 @@ enum usb_irq_events { #define PALMAS_GPADC_TRIM15 0xE #define PALMAS_GPADC_TRIM16 0xF +static inline int palmas_read(struct palmas *palmas, unsigned int base, + unsigned int reg, unsigned int *val) +{ + unsigned int addr = PALMAS_BASE_TO_REG(base, reg); + int slave_id = PALMAS_BASE_TO_SLAVE(base); + + return regmap_read(palmas->regmap[slave_id], addr, val); +} + +static inline int palmas_write(struct palmas *palmas, unsigned int base, + unsigned int reg, unsigned int value) +{ + unsigned int addr = PALMAS_BASE_TO_REG(base, reg); + int slave_id = PALMAS_BASE_TO_SLAVE(base); + + return regmap_write(palmas->regmap[slave_id], addr, value); +} + +static inline int palmas_bulk_write(struct palmas *palmas, unsigned int base, + unsigned int reg, const void *val, size_t val_count) +{ + unsigned int addr = PALMAS_BASE_TO_REG(base, reg); + int slave_id = PALMAS_BASE_TO_SLAVE(base); + + return regmap_bulk_write(palmas->regmap[slave_id], addr, + val, val_count); +} + +static inline int palmas_bulk_read(struct palmas *palmas, unsigned int base, + unsigned int reg, void *val, size_t val_count) +{ + unsigned int addr = PALMAS_BASE_TO_REG(base, reg); + int slave_id = PALMAS_BASE_TO_SLAVE(base); + + return regmap_bulk_read(palmas->regmap[slave_id], addr, + val, val_count); +} + +static inline int palmas_update_bits(struct palmas *palmas, unsigned int base, + unsigned int reg, unsigned int mask, unsigned int val) +{ + unsigned int addr = PALMAS_BASE_TO_REG(base, reg); + int slave_id = PALMAS_BASE_TO_SLAVE(base); + + return regmap_update_bits(palmas->regmap[slave_id], addr, mask, val); +} + +static inline int palmas_irq_get_virq(struct palmas *palmas, int irq) +{ + return regmap_irq_get_virq(palmas->irq_data, irq); +} + #endif /* __LINUX_MFD_PALMAS_H */ -- cgit v1.2.3 From 3d91f8282c66d9edafa3980385324ce6a48edcda Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 29 Jan 2013 00:47:37 +0800 Subject: mfd: arizona: Provide platform data for MICBIAS configuration Allow the MICBIAS voltages and other attributes to be configured by the platform. Signed-off-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/arizona/pdata.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/arizona/pdata.h b/include/linux/mfd/arizona/pdata.h index 8b1d1daaae16..37894d6a4f6f 100644 --- a/include/linux/mfd/arizona/pdata.h +++ b/include/linux/mfd/arizona/pdata.h @@ -56,6 +56,8 @@ #define ARIZONA_DMIC_MICBIAS2 2 #define ARIZONA_DMIC_MICBIAS3 3 +#define ARIZONA_MAX_MICBIAS 3 + #define ARIZONA_INMODE_DIFF 0 #define ARIZONA_INMODE_SE 1 #define ARIZONA_INMODE_DMIC 2 @@ -69,6 +71,13 @@ struct regulator_init_data; +struct arizona_micbias { + int mV; /** Regulated voltage */ + unsigned int ext_cap:1; /** External capacitor fitted */ + unsigned int discharge:1; /** Actively discharge */ + unsigned int fast_start:1; /** Enable aggressive startup ramp rate */ +}; + struct arizona_micd_config { unsigned int src; unsigned int bias; @@ -106,6 +115,9 @@ struct arizona_pdata { /** Reference voltage for DMIC inputs */ int dmic_ref[ARIZONA_MAX_INPUT]; + /** MICBIAS configurations */ + struct arizona_micbias micbias[ARIZONA_MAX_MICBIAS]; + /** Mode of input structures */ int inmode[ARIZONA_MAX_INPUT]; -- cgit v1.2.3 From 5d4e9bd79a5ab5bd4695d3becaa71da447a76a94 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Wed, 16 Jan 2013 14:53:50 +0100 Subject: mfd: twl-core: Clean up module id lookup and definitions Use enums for all module definitions: twl_module_ids for common functionality among twl4030/twl6030 twl4030_module_ids for twl4030 specific ids twl6030_module_ids for twl6030 specific ids In this way the list can be managed easier when new functionality going to be implemented. Signed-off-by: Peter Ujfalusi Signed-off-by: Samuel Ortiz --- include/linux/i2c/twl.h | 66 ++++++++++++++++++++++++++----------------------- 1 file changed, 35 insertions(+), 31 deletions(-) (limited to 'include/linux') diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h index 1ff54b114efc..72adc8807912 100644 --- a/include/linux/i2c/twl.h +++ b/include/linux/i2c/twl.h @@ -39,51 +39,55 @@ * address each module uses within a given i2c slave. */ +/* Module IDs for similar functionalities found in twl4030/twl6030 */ +enum twl_module_ids { + TWL_MODULE_USB, + TWL_MODULE_PIH, + TWL_MODULE_MAIN_CHARGE, + TWL_MODULE_PM_MASTER, + TWL_MODULE_PM_RECEIVER, + + TWL_MODULE_RTC, + TWL_MODULE_PWM, + TWL_MODULE_LED, + TWL_MODULE_SECURED_REG, + + TWL_MODULE_LAST, +}; + +/* Modules only available in twl4030 series */ enum twl4030_module_ids { - TWL4030_MODULE_USB = 0, /* Slave 0 (i2c address 0x48) */ - TWL4030_MODULE_AUDIO_VOICE, /* Slave 1 (i2c address 0x49) */ + TWL4030_MODULE_AUDIO_VOICE = TWL_MODULE_LAST, TWL4030_MODULE_GPIO, TWL4030_MODULE_INTBR, - TWL4030_MODULE_PIH, - TWL4030_MODULE_TEST, - TWL4030_MODULE_KEYPAD, /* Slave 2 (i2c address 0x4a) */ + TWL4030_MODULE_KEYPAD, + TWL4030_MODULE_MADC, TWL4030_MODULE_INTERRUPTS, - TWL4030_MODULE_LED, - - TWL4030_MODULE_MAIN_CHARGE, TWL4030_MODULE_PRECHARGE, - TWL4030_MODULE_PWM0, - TWL4030_MODULE_PWM1, - TWL4030_MODULE_PWMA, + TWL4030_MODULE_BACKUP, + TWL4030_MODULE_INT, - TWL4030_MODULE_PWMB, TWL5031_MODULE_ACCESSORY, TWL5031_MODULE_INTERRUPTS, - TWL4030_MODULE_BACKUP, /* Slave 3 (i2c address 0x4b) */ - TWL4030_MODULE_INT, - TWL4030_MODULE_PM_MASTER, - TWL4030_MODULE_PM_RECEIVER, - TWL4030_MODULE_RTC, - TWL4030_MODULE_SECURED_REG, TWL4030_MODULE_LAST, }; -/* Similar functionalities implemented in TWL4030/6030 */ -#define TWL_MODULE_USB TWL4030_MODULE_USB -#define TWL_MODULE_PIH TWL4030_MODULE_PIH -#define TWL_MODULE_MAIN_CHARGE TWL4030_MODULE_MAIN_CHARGE -#define TWL_MODULE_PM_MASTER TWL4030_MODULE_PM_MASTER -#define TWL_MODULE_PM_RECEIVER TWL4030_MODULE_PM_RECEIVER -#define TWL_MODULE_RTC TWL4030_MODULE_RTC -#define TWL_MODULE_PWM TWL4030_MODULE_PWM0 -#define TWL_MODULE_LED TWL4030_MODULE_LED - -#define TWL6030_MODULE_ID0 13 -#define TWL6030_MODULE_ID1 14 -#define TWL6030_MODULE_ID2 15 +/* Modules only available in twl6030 series */ +enum twl6030_module_ids { + TWL6030_MODULE_ID0 = TWL_MODULE_LAST, + TWL6030_MODULE_ID1, + TWL6030_MODULE_ID2, + TWL6030_MODULE_GPADC, + TWL6030_MODULE_GASGAUGE, + + TWL6030_MODULE_LAST, +}; + +/* Until the clients has been converted to use TWL_MODULE_LED */ +#define TWL4030_MODULE_LED TWL_MODULE_LED #define GPIO_INTR_OFFSET 0 #define KEYPAD_INTR_OFFSET 1 -- cgit v1.2.3 From ac7bc5a953c38c32513d1825decf336c4909ce3b Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Wed, 16 Jan 2013 14:53:58 +0100 Subject: mfd: twl-core: Remove no longer valid comment regarding to write buffer size With the regmap conversion there is no longeer a need to allocate bigger buffer for writes Signed-off-by: Peter Ujfalusi Signed-off-by: Samuel Ortiz --- include/linux/i2c/twl.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h index 72adc8807912..e441fd8e7c86 100644 --- a/include/linux/i2c/twl.h +++ b/include/linux/i2c/twl.h @@ -182,9 +182,6 @@ int twl_i2c_read_u8(u8 mod_no, u8 *val, u8 reg); /* * Read and write several 8-bit registers at once. - * - * IMPORTANT: For twl_i2c_write(), allocate num_bytes + 1 - * for the value, and populate your data starting at offset 1. */ int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes); int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes); -- cgit v1.2.3 From fbc6ae363e5e589a28135c051a2ff835e6236d5f Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Wed, 16 Jan 2013 14:53:59 +0100 Subject: mfd: twl-core: Move twl_i2c_read/write_u8 to header as inline function twl_i2c_read/write_u8 become as a simple wrapper over the twl_i2c_read/write. Signed-off-by: Peter Ujfalusi Signed-off-by: Samuel Ortiz --- include/linux/i2c/twl.h | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h index e441fd8e7c86..488debbef895 100644 --- a/include/linux/i2c/twl.h +++ b/include/linux/i2c/twl.h @@ -174,18 +174,23 @@ static inline int twl_class_is_ ##class(void) \ TWL_CLASS_IS(4030, TWL4030_CLASS_ID) TWL_CLASS_IS(6030, TWL6030_CLASS_ID) -/* - * Read and write single 8-bit registers - */ -int twl_i2c_write_u8(u8 mod_no, u8 val, u8 reg); -int twl_i2c_read_u8(u8 mod_no, u8 *val, u8 reg); - /* * Read and write several 8-bit registers at once. */ int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes); int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes); +/* + * Read and write single 8-bit registers + */ +static inline int twl_i2c_write_u8(u8 mod_no, u8 val, u8 reg) { + return twl_i2c_write(mod_no, &val, reg, 1); +} + +static inline int twl_i2c_read_u8(u8 mod_no, u8 *val, u8 reg) { + return twl_i2c_read(mod_no, val, reg, 1); +} + int twl_get_type(void); int twl_get_version(void); int twl_get_hfclk_rate(void); -- cgit v1.2.3 From 98c60a0d3afc8f68e6e4b85b93df14e238fec3cb Mon Sep 17 00:00:00 2001 From: Fabio Baltieri Date: Fri, 18 Jan 2013 12:40:11 +0100 Subject: mfd: dbx500-prcmu: Add watchdog ID definitions Add definition of watchdog IDs to be used by ux500_wdt driver. Acked-by: Lee Jones Acked-by: Linus Walleij Signed-off-by: Fabio Baltieri Signed-off-by: Samuel Ortiz --- include/linux/mfd/dbx500-prcmu.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/dbx500-prcmu.h b/include/linux/mfd/dbx500-prcmu.h index c202d6c4d879..c6e0608a21b5 100644 --- a/include/linux/mfd/dbx500-prcmu.h +++ b/include/linux/mfd/dbx500-prcmu.h @@ -146,6 +146,18 @@ enum prcmu_clock { PRCMU_DSI2ESCCLK, }; +/** + * enum prcmu_wdog_id - PRCMU watchdog IDs + * @PRCMU_WDOG_ALL: use all timers + * @PRCMU_WDOG_CPU1: use first CPU timer only + * @PRCMU_WDOG_CPU2: use second CPU timer conly + */ +enum prcmu_wdog_id { + PRCMU_WDOG_ALL = 0x00, + PRCMU_WDOG_CPU1 = 0x01, + PRCMU_WDOG_CPU2 = 0x02, +}; + /** * enum ape_opp - APE OPP states definition * @APE_OPP_INIT: -- cgit v1.2.3 From f0e5bd412fde30de3839c8dfa93a3e19e71ee462 Mon Sep 17 00:00:00 2001 From: Fabio Baltieri Date: Tue, 29 Jan 2013 09:57:19 +0100 Subject: watchdog: Add support for ux500_wdt watchdog This patch adds support for the ux500_wdt watchdog that is found in ST-Ericsson Ux500 platform. The driver is based on PRCMU APIs. Acked-by: Linus Walleij Acked-by: Lee Jones Acked-by: Wim Van Sebroeck Signed-off-by: Fabio Baltieri Signed-off-by: Samuel Ortiz --- include/linux/platform_data/ux500_wdt.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 include/linux/platform_data/ux500_wdt.h (limited to 'include/linux') diff --git a/include/linux/platform_data/ux500_wdt.h b/include/linux/platform_data/ux500_wdt.h new file mode 100644 index 000000000000..1689ff4c3bfd --- /dev/null +++ b/include/linux/platform_data/ux500_wdt.h @@ -0,0 +1,19 @@ +/* + * Copyright (C) ST Ericsson SA 2011 + * + * License Terms: GNU General Public License v2 + * + * STE Ux500 Watchdog platform data + */ +#ifndef __UX500_WDT_H +#define __UX500_WDT_H + +/** + * struct ux500_wdt_data + */ +struct ux500_wdt_data { + unsigned int timeout; + bool has_28_bits_resolution; +}; + +#endif /* __UX500_WDT_H */ -- cgit v1.2.3 From 306df798507d8e009a7d4a5e8ce238a3b107de20 Mon Sep 17 00:00:00 2001 From: Yi Zhang Date: Tue, 22 Jan 2013 10:43:45 +0800 Subject: mfd: 88pm80x: Remove redundant devm_* calls devm_* functions are device managed and make error handling and code simpler; it also fix error exit paths Signed-off-by: Yi Zhang Signed-off-by: Samuel Ortiz --- include/linux/mfd/88pm80x.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/88pm80x.h b/include/linux/mfd/88pm80x.h index 478672ed0c3d..e94537befabd 100644 --- a/include/linux/mfd/88pm80x.h +++ b/include/linux/mfd/88pm80x.h @@ -365,5 +365,5 @@ static inline int pm80x_dev_resume(struct device *dev) extern int pm80x_init(struct i2c_client *client, const struct i2c_device_id *id); -extern int pm80x_deinit(struct i2c_client *client); +extern int pm80x_deinit(void); #endif /* __LINUX_MFD_88PM80X_H */ -- cgit v1.2.3 From 5f384c1f8be19487f904731d7232120dcfeca8e1 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 25 Jan 2013 17:09:23 +0800 Subject: mfd: wm5102: Make DSP scratch registers readable Signed-off-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/arizona/registers.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/arizona/registers.h b/include/linux/mfd/arizona/registers.h index 1f6fe31a4d5c..718126084ad1 100644 --- a/include/linux/mfd/arizona/registers.h +++ b/include/linux/mfd/arizona/registers.h @@ -982,18 +982,34 @@ #define ARIZONA_DSP1_STATUS_1 0x1104 #define ARIZONA_DSP1_STATUS_2 0x1105 #define ARIZONA_DSP1_STATUS_3 0x1106 +#define ARIZONA_DSP1_SCRATCH_0 0x1140 +#define ARIZONA_DSP1_SCRATCH_1 0x1141 +#define ARIZONA_DSP1_SCRATCH_2 0x1142 +#define ARIZONA_DSP1_SCRATCH_3 0x1143 #define ARIZONA_DSP2_CONTROL_1 0x1200 #define ARIZONA_DSP2_CLOCKING_1 0x1201 #define ARIZONA_DSP2_STATUS_1 0x1204 #define ARIZONA_DSP2_STATUS_2 0x1205 +#define ARIZONA_DSP2_SCRATCH_0 0x1240 +#define ARIZONA_DSP2_SCRATCH_1 0x1241 +#define ARIZONA_DSP2_SCRATCH_2 0x1242 +#define ARIZONA_DSP2_SCRATCH_3 0x1243 #define ARIZONA_DSP3_CONTROL_1 0x1300 #define ARIZONA_DSP3_CLOCKING_1 0x1301 #define ARIZONA_DSP3_STATUS_1 0x1304 #define ARIZONA_DSP3_STATUS_2 0x1305 +#define ARIZONA_DSP3_SCRATCH_0 0x1340 +#define ARIZONA_DSP3_SCRATCH_1 0x1341 +#define ARIZONA_DSP3_SCRATCH_2 0x1342 +#define ARIZONA_DSP3_SCRATCH_3 0x1343 #define ARIZONA_DSP4_CONTROL_1 0x1400 #define ARIZONA_DSP4_CLOCKING_1 0x1401 #define ARIZONA_DSP4_STATUS_1 0x1404 #define ARIZONA_DSP4_STATUS_2 0x1405 +#define ARIZONA_DSP4_SCRATCH_0 0x1440 +#define ARIZONA_DSP4_SCRATCH_1 0x1441 +#define ARIZONA_DSP4_SCRATCH_2 0x1442 +#define ARIZONA_DSP4_SCRATCH_3 0x1443 /* * Field Definitions. -- cgit v1.2.3 From 3730bb8b65f9ee8b7097021f8073b80511af770d Mon Sep 17 00:00:00 2001 From: Wei WANG Date: Tue, 29 Jan 2013 15:21:32 +0800 Subject: mfd: rtsx: Fix typo in comment Fix a misspelling word in comment Signed-off-by: Wei WANG Signed-off-by: Samuel Ortiz --- include/linux/mfd/rtsx_pci.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h index 4b117a3f54d4..3f2bf26ca0d1 100644 --- a/include/linux/mfd/rtsx_pci.h +++ b/include/linux/mfd/rtsx_pci.h @@ -465,7 +465,7 @@ #define SD_RSP_TYPE_R6 0x01 #define SD_RSP_TYPE_R7 0x01 -/* SD_CONFIURE3 */ +/* SD_CONFIGURE3 */ #define SD_RSP_80CLK_TIMEOUT_EN 0x01 /* Card Transfer Reset Register */ -- cgit v1.2.3 From 8ea402f5646e6e36c8cd0a62053ba8939204dceb Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Wed, 30 Jan 2013 10:33:16 +0000 Subject: mfd: vexpress: Add pseudo-GPIO based LEDs The LEDs on the Versatile Express motherboard are controlled through simple memory-mapped register. This patch extends the pseudo-GPIO controller definition for these lines and creates generic "leds-gpio" device using them Signed-off-by: Pawel Moll Signed-off-by: Samuel Ortiz --- include/linux/vexpress.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/vexpress.h b/include/linux/vexpress.h index c52215ff4245..75818744ab59 100644 --- a/include/linux/vexpress.h +++ b/include/linux/vexpress.h @@ -27,6 +27,14 @@ #define VEXPRESS_GPIO_MMC_CARDIN 0 #define VEXPRESS_GPIO_MMC_WPROT 1 #define VEXPRESS_GPIO_FLASH_WPn 2 +#define VEXPRESS_GPIO_LED0 3 +#define VEXPRESS_GPIO_LED1 4 +#define VEXPRESS_GPIO_LED2 5 +#define VEXPRESS_GPIO_LED3 6 +#define VEXPRESS_GPIO_LED4 7 +#define VEXPRESS_GPIO_LED5 8 +#define VEXPRESS_GPIO_LED6 9 +#define VEXPRESS_GPIO_LED7 10 #define VEXPRESS_RES_FUNC(_site, _func) \ { \ -- cgit v1.2.3 From e12379320b2e1ceffc4211ad174989bc042149d9 Mon Sep 17 00:00:00 2001 From: Roger Tseng Date: Mon, 4 Feb 2013 15:45:59 +0800 Subject: mfd: rtsx: Support RTS5227 Support new model RTS5227. Signed-off-by: Roger Tseng Reviewed-by: Wei WANG Signed-off-by: Samuel Ortiz --- include/linux/mfd/rtsx_pci.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h index 3f2bf26ca0d1..5d9b81e8aff4 100644 --- a/include/linux/mfd/rtsx_pci.h +++ b/include/linux/mfd/rtsx_pci.h @@ -581,8 +581,11 @@ #define CARD_GPIO_DIR 0xFD57 #define CARD_GPIO 0xFD58 #define CARD_DATA_SOURCE 0xFD5B +#define SD30_CLK_DRIVE_SEL 0xFD5A #define CARD_SELECT 0xFD5C #define SD30_DRIVE_SEL 0xFD5E +#define SD30_CMD_DRIVE_SEL 0xFD5E +#define SD30_DAT_DRIVE_SEL 0xFD5F #define CARD_CLK_EN 0xFD69 #define SDIO_CTRL 0xFD6B #define CD_PAD_CTL 0xFD73 @@ -655,6 +658,8 @@ #define MSGTXDATA3 0xFE47 #define MSGTXCTL 0xFE48 #define PETXCFG 0xFE49 +#define LTR_CTL 0xFE4A +#define OBFF_CFG 0xFE4C #define CDRESUMECTL 0xFE52 #define WAKE_SEL_CTL 0xFE54 -- cgit v1.2.3 From 4e405ae256b7e04f7c1213136f3bfd9fb76e2023 Mon Sep 17 00:00:00 2001 From: Qing Xu Date: Mon, 4 Feb 2013 23:40:42 +0800 Subject: mfd: max8925: Add irqdomain for dt Add irqdomains for max8925's main irq, wrap irq register operations into irqdomain's map func. it is necessary for dt support. Also, add dt support for max8925 driver. Signed-off-by: Qing Xu Signed-off-by: Haojian Zhuang Signed-off-by: Samuel Ortiz --- include/linux/mfd/max8925.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/max8925.h b/include/linux/mfd/max8925.h index 74d8e2969630..ce8502e9e7dc 100644 --- a/include/linux/mfd/max8925.h +++ b/include/linux/mfd/max8925.h @@ -190,6 +190,8 @@ enum { MAX8925_NR_IRQS, }; + + struct max8925_chip { struct device *dev; struct i2c_client *i2c; @@ -201,7 +203,6 @@ struct max8925_chip { int irq_base; int core_irq; int tsc_irq; - unsigned int wakeup_flag; }; -- cgit v1.2.3 From c3481955f6c78c8dd99921759306d7469c999ec2 Mon Sep 17 00:00:00 2001 From: Wei WANG Date: Fri, 8 Feb 2013 15:24:27 +0800 Subject: mfd: rtsx: Fix issue that booting OS with SD card inserted Realtek card reader supports both SD and MS card. According to the settings of rtsx MFD driver, SD host will be probed before MS host. If we boot/reboot Linux with SD card inserted, the resetting flow of SD card will succeed, and the following resetting flow of MS is sure to fail. Then MS upper-level driver will ask rtsx driver to turn power off. This request leads to the result that the following SD commands fail and SD card can't be accessed again. In this commit, Realtek's SD and MS host driver will check whether the card that upper driver requesting is the one existing in the slot. If not, Realtek's host driver will refuse the operation to make sure the exlusive accessing at the same time. Signed-off-by: Wei WANG Signed-off-by: Samuel Ortiz --- include/linux/mfd/rtsx_pci.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h index 5d9b81e8aff4..26ea7f1b7caf 100644 --- a/include/linux/mfd/rtsx_pci.h +++ b/include/linux/mfd/rtsx_pci.h @@ -740,6 +740,7 @@ struct rtsx_pcr { unsigned int card_inserted; unsigned int card_removed; + unsigned int card_exist; struct delayed_work carddet_work; struct delayed_work idle_work; @@ -804,6 +805,7 @@ int rtsx_pci_switch_clock(struct rtsx_pcr *pcr, unsigned int card_clock, u8 ssc_depth, bool initial_mode, bool double_clk, bool vpclk); int rtsx_pci_card_power_on(struct rtsx_pcr *pcr, int card); int rtsx_pci_card_power_off(struct rtsx_pcr *pcr, int card); +int rtsx_pci_card_exclusive_check(struct rtsx_pcr *pcr, int card); int rtsx_pci_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage); unsigned int rtsx_pci_card_exist(struct rtsx_pcr *pcr); void rtsx_pci_complete_unfinished_transfer(struct rtsx_pcr *pcr); -- cgit v1.2.3 From 407af3299ef1ac7e87ce3fb530e32a009d1a9efd Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Wed, 13 Feb 2013 12:00:12 +0000 Subject: bridge: Add netlink interface to configure vlans on bridge ports Add a netlink interface to add and remove vlan configuration on bridge port. The interface uses the RTM_SETLINK message and encodes the vlan configuration inside the IFLA_AF_SPEC. It is possble to include multiple vlans to either add or remove in a single message. Signed-off-by: Vlad Yasevich Signed-off-by: David S. Miller --- include/linux/netdevice.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 25bd46f52877..1b90f9401000 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1020,6 +1020,8 @@ struct net_device_ops { int (*ndo_bridge_getlink)(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev); + int (*ndo_bridge_dellink)(struct net_device *dev, + struct nlmsghdr *nlh); int (*ndo_change_carrier)(struct net_device *dev, bool new_carrier); }; -- cgit v1.2.3 From 6cbdceeb1cb12c7d620161925a8c3e81daadb2e4 Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Wed, 13 Feb 2013 12:00:13 +0000 Subject: bridge: Dump vlan information from a bridge port Using the RTM_GETLINK dump the vlan filter list of a given bridge port. The information depends on setting the filter flag similar to how nic VF info is dumped. Signed-off-by: Vlad Yasevich Signed-off-by: David S. Miller --- include/linux/netdevice.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 1b90f9401000..1964ca66df56 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1019,7 +1019,8 @@ struct net_device_ops { struct nlmsghdr *nlh); int (*ndo_bridge_getlink)(struct sk_buff *skb, u32 pid, u32 seq, - struct net_device *dev); + struct net_device *dev, + u32 filter_mask); int (*ndo_bridge_dellink)(struct net_device *dev, struct nlmsghdr *nlh); int (*ndo_change_carrier)(struct net_device *dev, -- cgit v1.2.3 From 1690be63a27b20ae65c792729a44f5970561ffa4 Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Wed, 13 Feb 2013 12:00:18 +0000 Subject: bridge: Add vlan support to static neighbors When a user adds bridge neighbors, allow him to specify VLAN id. If the VLAN id is not specified, the neighbor will be added for VLANs currently in the ports filter list. If no VLANs are configured on the port, we use vlan 0 and only add 1 entry. Signed-off-by: Vlad Yasevich Acked-by: Jitendra Kalsaria Signed-off-by: David S. Miller --- include/linux/netdevice.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 1964ca66df56..9deb672d999f 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -884,7 +884,8 @@ struct netdev_fcoe_hbainfo { * struct net_device *dev, * const unsigned char *addr, u16 flags) * Adds an FDB entry to dev for addr. - * int (*ndo_fdb_del)(struct ndmsg *ndm, struct net_device *dev, + * int (*ndo_fdb_del)(struct ndmsg *ndm, struct nlattr *tb[], + * struct net_device *dev, * const unsigned char *addr) * Deletes the FDB entry from dev coresponding to addr. * int (*ndo_fdb_dump)(struct sk_buff *skb, struct netlink_callback *cb, @@ -1008,6 +1009,7 @@ struct net_device_ops { const unsigned char *addr, u16 flags); int (*ndo_fdb_del)(struct ndmsg *ndm, + struct nlattr *tb[], struct net_device *dev, const unsigned char *addr); int (*ndo_fdb_dump)(struct sk_buff *skb, -- cgit v1.2.3 From 3ebc21f7bc2f9c0145bbbf0f12430b766a200f9f Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Thu, 31 Jan 2013 16:02:01 -0600 Subject: libceph: fix messenger CONFIG_BLOCK dependencies The ceph messenger has a few spots that are only used when bio messages are supported, and that's only when CONFIG_BLOCK is defined. This surrounds a couple of spots with #ifdef's that would cause a problem if CONFIG_BLOCK were not present in the kernel configuration. This resolves: http://tracker.ceph.com/issues/3976 Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/messenger.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h index 14ba5ee738a9..60903e0f665c 100644 --- a/include/linux/ceph/messenger.h +++ b/include/linux/ceph/messenger.h @@ -83,9 +83,11 @@ struct ceph_msg { struct list_head list_head; struct kref kref; +#ifdef CONFIG_BLOCK struct bio *bio; /* instead of pages/pagelist */ struct bio *bio_iter; /* bio iterator */ int bio_seg; /* current bio segment */ +#endif /* CONFIG_BLOCK */ struct ceph_pagelist *trail; /* the trailing part of the data */ bool front_is_vmalloc; bool more_to_follow; -- cgit v1.2.3 From 72fe25e3460c8673984370208e0e6261101372d6 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Wed, 30 Jan 2013 11:13:33 -0600 Subject: libceph: add a compatibility check interface An upcoming change implements semantic change that could lead to a crash if an old version of the libceph kernel module is used with a new version of the rbd kernel module. In order to preclude that possibility, this adds a compatibilty check interface. If this interface doesn't exist, the modules are obviously not compatible. But if it does exist, this provides a way of letting the caller know whether it will operate properly with this libceph module. Perhaps confusingly, it returns false right now. The semantic change mentioned above will make it return true. This resolves: http://tracker.ceph.com/issues/3800 Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/libceph.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h index 084d3c622b12..c44275ab375c 100644 --- a/include/linux/ceph/libceph.h +++ b/include/linux/ceph/libceph.h @@ -193,6 +193,8 @@ static inline int calc_pages_for(u64 off, u64 len) } /* ceph_common.c */ +extern bool libceph_compatible(void *data); + extern const char *ceph_msg_type_name(int type); extern int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid); extern struct kmem_cache *ceph_inode_cachep; -- cgit v1.2.3 From 112202d9098aae2c36436e5178c0cf3ced423c7b Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 13 Feb 2013 19:29:12 -0800 Subject: workqueue: rename cpu_workqueue to pool_workqueue workqueue has moved away from global_cwqs to worker_pools and with the scheduled custom worker pools, wforkqueues will be associated with pools which don't have anything to do with CPUs. The workqueue code went through significant amount of changes recently and mass renaming isn't likely to hurt much additionally. Let's replace 'cpu' with 'pool' so that it reflects the current design. * s/struct cpu_workqueue_struct/struct pool_workqueue/ * s/cpu_wq/pool_wq/ * s/cwq/pwq/ This patch is purely cosmetic. Signed-off-by: Tejun Heo --- include/linux/workqueue.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h index a3d7556510c3..8afab27cdbc2 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -27,7 +27,7 @@ void delayed_work_timer_fn(unsigned long __data); enum { WORK_STRUCT_PENDING_BIT = 0, /* work item is pending execution */ WORK_STRUCT_DELAYED_BIT = 1, /* work item is delayed */ - WORK_STRUCT_CWQ_BIT = 2, /* data points to cwq */ + WORK_STRUCT_PWQ_BIT = 2, /* data points to pwq */ WORK_STRUCT_LINKED_BIT = 3, /* next work is linked to this one */ #ifdef CONFIG_DEBUG_OBJECTS_WORK WORK_STRUCT_STATIC_BIT = 4, /* static initializer (debugobjects) */ @@ -40,7 +40,7 @@ enum { WORK_STRUCT_PENDING = 1 << WORK_STRUCT_PENDING_BIT, WORK_STRUCT_DELAYED = 1 << WORK_STRUCT_DELAYED_BIT, - WORK_STRUCT_CWQ = 1 << WORK_STRUCT_CWQ_BIT, + WORK_STRUCT_PWQ = 1 << WORK_STRUCT_PWQ_BIT, WORK_STRUCT_LINKED = 1 << WORK_STRUCT_LINKED_BIT, #ifdef CONFIG_DEBUG_OBJECTS_WORK WORK_STRUCT_STATIC = 1 << WORK_STRUCT_STATIC_BIT, @@ -60,14 +60,14 @@ enum { WORK_CPU_END = NR_CPUS + 1, /* - * Reserve 7 bits off of cwq pointer w/ debugobjects turned - * off. This makes cwqs aligned to 256 bytes and allows 15 - * workqueue flush colors. + * Reserve 7 bits off of pwq pointer w/ debugobjects turned off. + * This makes pwqs aligned to 256 bytes and allows 15 workqueue + * flush colors. */ WORK_STRUCT_FLAG_BITS = WORK_STRUCT_COLOR_SHIFT + WORK_STRUCT_COLOR_BITS, - /* data contains off-queue information when !WORK_STRUCT_CWQ */ + /* data contains off-queue information when !WORK_STRUCT_PWQ */ WORK_OFFQ_FLAG_BASE = WORK_STRUCT_FLAG_BITS, WORK_OFFQ_CANCELING = (1 << WORK_OFFQ_FLAG_BASE), -- cgit v1.2.3 From b2dc0c2b7a84864fdbad2e264ce9b5c7068a0a0f Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 13 Feb 2013 23:08:18 +0100 Subject: ARM: s3c: i2c: add platform_device forward declaration A recent cleanup to the mach-osiris.c file is causing build errors because the i2c-s3c2410.h header file is included before we see the definition for platform_device. The fix is to make the header file more robust against inclusion from other places. While this should normally go through the i2c tree, the bug only exists in arm-soc at the moment, so it's easier to fix it there before it goes upstream. Without this patch, building s3c2410_defconfig results in: arch/arm/mach-s3c24xx/mach-osiris.c:34:0: include/linux/platform_data/i2c-s3c2410.h:37:26: warning: 'struct platform_device' declared inside parameter list [enabled by default] Signed-off-by: Arnd Bergmann Cc: linux-i2c@vger.kernel.org Cc: Wolfram Sang Cc: Ben Dooks Cc: Kukjin Kim --- include/linux/platform_data/i2c-s3c2410.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/i2c-s3c2410.h b/include/linux/platform_data/i2c-s3c2410.h index 51d52e767a19..2a50048c1c44 100644 --- a/include/linux/platform_data/i2c-s3c2410.h +++ b/include/linux/platform_data/i2c-s3c2410.h @@ -15,6 +15,8 @@ #define S3C_IICFLG_FILTER (1<<0) /* enable s3c2440 filter */ +struct platform_device; + /** * struct s3c2410_platform_i2c - Platform data for s3c I2C. * @bus_num: The bus number to use (if possible). -- cgit v1.2.3 From e9b04b5b67ec628a5e9a312e14b6864f8f73ba12 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 20 Nov 2012 11:14:10 -0500 Subject: make do_sigaltstack() static Signed-off-by: Al Viro --- include/linux/sched.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 8f983293b403..6dd06494997a 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2259,7 +2259,6 @@ extern struct sigqueue *sigqueue_alloc(void); extern void sigqueue_free(struct sigqueue *); extern int send_sigqueue(struct sigqueue *, struct task_struct *, int group); extern int do_sigaction(int, struct k_sigaction *, struct k_sigaction *); -extern int do_sigaltstack(const stack_t __user *, stack_t __user *, unsigned long); static inline void restore_saved_sigmask(void) { -- cgit v1.2.3 From d64008a8f30e0b381b292788ec6f3ee509b3bb40 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 25 Nov 2012 23:12:10 -0500 Subject: burying unused conditionals __ARCH_WANT_SYS_RT_SIGACTION, __ARCH_WANT_SYS_RT_SIGSUSPEND, __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND, __ARCH_WANT_COMPAT_SYS_SCHED_RR_GET_INTERVAL - not used anymore CONFIG_GENERIC_{SIGALTSTACK,COMPAT_RT_SIG{ACTION,QUEUEINFO,PENDING,PROCMASK}} - can be assumed always set. --- include/linux/compat.h | 14 -------------- include/linux/syscalls.h | 2 -- 2 files changed, 16 deletions(-) (limited to 'include/linux') diff --git a/include/linux/compat.h b/include/linux/compat.h index 8de903587fb9..de095b0462a7 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -68,7 +68,6 @@ #ifndef compat_user_stack_pointer #define compat_user_stack_pointer() current_user_stack_pointer() #endif -#ifdef CONFIG_GENERIC_SIGALTSTACK #ifndef compat_sigaltstack /* we'll need that for MIPS */ typedef struct compat_sigaltstack { compat_uptr_t ss_sp; @@ -76,7 +75,6 @@ typedef struct compat_sigaltstack { compat_size_t ss_size; } compat_stack_t; #endif -#endif #define compat_jiffies_to_clock_t(x) \ (((unsigned long)(x) * COMPAT_USER_HZ) / HZ) @@ -142,7 +140,6 @@ typedef struct { compat_sigset_word sig[_COMPAT_NSIG_WORDS]; } compat_sigset_t; -#ifdef CONFIG_GENERIC_COMPAT_RT_SIGACTION struct compat_sigaction { #ifndef __ARCH_HAS_ODD_SIGACTION compat_uptr_t sa_handler; @@ -156,7 +153,6 @@ struct compat_sigaction { #endif compat_sigset_t sa_mask __packed; }; -#endif /* * These functions operate strictly on struct compat_time* @@ -623,27 +619,19 @@ asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese, struct compat_timespec __user *uts, compat_size_t sigsetsize); asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, compat_size_t sigsetsize); -#ifdef CONFIG_GENERIC_COMPAT_RT_SIGPROCMASK asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set, compat_sigset_t __user *oset, compat_size_t sigsetsize); -#endif -#ifdef CONFIG_GENERIC_COMPAT_RT_SIGPENDING asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset, compat_size_t sigsetsize); -#endif #ifndef CONFIG_ODD_RT_SIGACTION -#ifdef CONFIG_GENERIC_COMPAT_RT_SIGACTION asmlinkage long compat_sys_rt_sigaction(int, const struct compat_sigaction __user *, struct compat_sigaction __user *, compat_size_t); #endif -#endif -#ifdef CONFIG_GENERIC_COMPAT_RT_SIGQUEUEINFO asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig, struct compat_siginfo __user *uinfo); -#endif asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info); asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg); @@ -694,13 +682,11 @@ asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid, asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, compat_size_t count); -#ifdef CONFIG_GENERIC_SIGALTSTACK asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, compat_stack_t __user *uoss_ptr); int compat_restore_altstack(const compat_stack_t __user *uss); int __compat_save_altstack(compat_stack_t __user *, unsigned long); -#endif asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval); diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 66d298f69f98..313a8e0a6553 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -300,10 +300,8 @@ asmlinkage long sys_personality(unsigned int personality); asmlinkage long sys_sigpending(old_sigset_t __user *set); asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set, old_sigset_t __user *oset); -#ifdef CONFIG_GENERIC_SIGALTSTACK asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss, struct sigaltstack __user *uoss); -#endif asmlinkage long sys_getitimer(int which, struct itimerval __user *value); asmlinkage long sys_setitimer(int which, -- cgit v1.2.3 From 7d7e499f7333f68b7e7f67d14b9c1480913b4afb Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 31 Jan 2013 12:11:12 +0000 Subject: smpboot: Allow selfparking per cpu threads The stop machine threads are still killed when a cpu goes offline. The reason is that the thread is used to bring the cpu down, so it can't be parked along with the other per cpu threads. Allow a per cpu thread to be excluded from automatic parking, so it can park itself once it's done Add a create callback function as well. Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra Cc: Rusty Russell Cc: Paul McKenney Cc: Srivatsa S. Bhat Cc: Arjan van de Veen Cc: Paul Turner Cc: Richard Weinberger Cc: Magnus Damm Link: http://lkml.kernel.org/r/20130131120741.553993267@linutronix.de Signed-off-by: Thomas Gleixner --- include/linux/smpboot.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/smpboot.h b/include/linux/smpboot.h index e0106d8581d3..c65dee059913 100644 --- a/include/linux/smpboot.h +++ b/include/linux/smpboot.h @@ -14,6 +14,8 @@ struct smpboot_thread_data; * @thread_should_run: Check whether the thread should run or not. Called with * preemption disabled. * @thread_fn: The associated thread function + * @create: Optional setup function, called when the thread gets + * created (Not called from the thread context) * @setup: Optional setup function, called when the thread gets * operational the first time * @cleanup: Optional cleanup function, called when the thread @@ -22,6 +24,7 @@ struct smpboot_thread_data; * parked (cpu offline) * @unpark: Optional unpark function, called when the thread is * unparked (cpu online) + * @selfparking: Thread is not parked by the park function. * @thread_comm: The base name of the thread */ struct smp_hotplug_thread { @@ -29,10 +32,12 @@ struct smp_hotplug_thread { struct list_head list; int (*thread_should_run)(unsigned int cpu); void (*thread_fn)(unsigned int cpu); + void (*create)(unsigned int cpu); void (*setup)(unsigned int cpu); void (*cleanup)(unsigned int cpu, bool online); void (*park)(unsigned int cpu); void (*unpark)(unsigned int cpu); + bool selfparking; const char *thread_comm; }; -- cgit v1.2.3 From 978c4172af48f0adc082f8b1d94acb817d947730 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Thu, 14 Feb 2013 11:00:16 +0200 Subject: dmaengine.h: remove redundant else keyword dmaengine_device_control returns -ENOSYS in case the dma driver doesn't have such functionality. Signed-off-by: Andy Shevchenko Acked-by: Viresh Kumar Signed-off-by: Vinod Koul --- include/linux/dmaengine.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index bfcdecb5d87a..f5939999cb65 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -610,8 +610,8 @@ static inline int dmaengine_device_control(struct dma_chan *chan, { if (chan->device->device_control) return chan->device->device_control(chan, cmd, arg); - else - return -ENOSYS; + + return -ENOSYS; } static inline int dmaengine_slave_config(struct dma_chan *chan, -- cgit v1.2.3 From abf09bed3cceadd809f0356065c2ada6cee90d4a Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Wed, 7 Nov 2012 13:17:37 +0100 Subject: s390/mm: implement software dirty bits The s390 architecture is unique in respect to dirty page detection, it uses the change bit in the per-page storage key to track page modifications. All other architectures track dirty bits by means of page table entries. This property of s390 has caused numerous problems in the past, e.g. see git commit ef5d437f71afdf4a "mm: fix XFS oops due to dirty pages without buffers on s390". To avoid future issues in regard to per-page dirty bits convert s390 to a fault based software dirty bit detection mechanism. All user page table entries which are marked as clean will be hardware read-only, even if the pte is supposed to be writable. A write by the user process will trigger a protection fault which will cause the user pte to be marked as dirty and the hardware read-only bit is removed. With this change the dirty bit in the storage key is irrelevant for Linux as a host, but the storage key is still required for KVM guests. The effect is that page_test_and_clear_dirty and the related code can be removed. The referenced bit in the storage key is still used by the page_test_and_clear_young primitive to provide page age information. For page cache pages of mappings with mapping_cap_account_dirty there will not be any change in behavior as the dirty bit tracking already uses read-only ptes to control the amount of dirty pages. Only for swap cache pages and pages of mappings without mapping_cap_account_dirty there can be additional protection faults. To avoid an excessive number of additional faults the mk_pte primitive checks for PageDirty if the pgprot value allows for writes and pre-dirties the pte. That avoids all additional faults for tmpfs and shmem pages until these pages are added to the swap cache. Signed-off-by: Martin Schwidefsky --- include/linux/page-flags.h | 8 -------- 1 file changed, 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 70473da47b3f..6d53675c2b54 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -303,21 +303,13 @@ static inline void __SetPageUptodate(struct page *page) static inline void SetPageUptodate(struct page *page) { -#ifdef CONFIG_S390 - if (!test_and_set_bit(PG_uptodate, &page->flags)) - page_set_storage_key(page_to_phys(page), PAGE_DEFAULT_KEY, 0); -#else /* * Memory barrier must be issued before setting the PG_uptodate bit, * so that all previous stores issued in order to bring the page * uptodate are actually visible before PageUptodate becomes true. - * - * s390 doesn't need an explicit smp_wmb here because the test and - * set bit already provides full barriers. */ smp_wmb(); set_bit(PG_uptodate, &(page)->flags); -#endif } CLEARPAGEFLAG(Uptodate, uptodate) -- cgit v1.2.3 From 878ec67b3ac528a2b6d44055f049cdbb9cfda30c Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Thu, 14 Feb 2013 17:39:08 +0100 Subject: regmap: mmio: add register clock support Some mmio devices have a dedicated interface clock that needs to be enabled to access their registers. This patch optionally enables a clock before accessing registers in the regmap_bus callbacks. I added (devm_)regmap_init_mmio_clk variants of the init functions that have an added clk_id string parameter. This is passed to clk_get to request the clock from the clk framework. Signed-off-by: Philipp Zabel Signed-off-by: Mark Brown --- include/linux/regmap.h | 47 +++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 41 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index b7e95bf942c9..f0480a3297e4 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -285,9 +285,9 @@ struct regmap *regmap_init_i2c(struct i2c_client *i2c, const struct regmap_config *config); struct regmap *regmap_init_spi(struct spi_device *dev, const struct regmap_config *config); -struct regmap *regmap_init_mmio(struct device *dev, - void __iomem *regs, - const struct regmap_config *config); +struct regmap *regmap_init_mmio_clk(struct device *dev, const char *clk_id, + void __iomem *regs, + const struct regmap_config *config); struct regmap *devm_regmap_init(struct device *dev, const struct regmap_bus *bus, @@ -297,9 +297,44 @@ struct regmap *devm_regmap_init_i2c(struct i2c_client *i2c, const struct regmap_config *config); struct regmap *devm_regmap_init_spi(struct spi_device *dev, const struct regmap_config *config); -struct regmap *devm_regmap_init_mmio(struct device *dev, - void __iomem *regs, - const struct regmap_config *config); +struct regmap *devm_regmap_init_mmio_clk(struct device *dev, const char *clk_id, + void __iomem *regs, + const struct regmap_config *config); + +/** + * regmap_init_mmio(): Initialise register map + * + * @dev: Device that will be interacted with + * @regs: Pointer to memory-mapped IO region + * @config: Configuration for register map + * + * The return value will be an ERR_PTR() on error or a valid pointer to + * a struct regmap. + */ +static inline struct regmap *regmap_init_mmio(struct device *dev, + void __iomem *regs, + const struct regmap_config *config) +{ + return regmap_init_mmio_clk(dev, NULL, regs, config); +} + +/** + * devm_regmap_init_mmio(): Initialise managed register map + * + * @dev: Device that will be interacted with + * @regs: Pointer to memory-mapped IO region + * @config: Configuration for register map + * + * The return value will be an ERR_PTR() on error or a valid pointer + * to a struct regmap. The regmap will be automatically freed by the + * device management code. + */ +static inline struct regmap *devm_regmap_init_mmio(struct device *dev, + void __iomem *regs, + const struct regmap_config *config) +{ + return devm_regmap_init_mmio_clk(dev, NULL, regs, config); +} void regmap_exit(struct regmap *map); int regmap_reinit_cache(struct regmap *map, -- cgit v1.2.3 From 56cc6cb707fedd897d391f6e50e3b56d62d6683f Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 14 Feb 2013 23:26:56 +0100 Subject: ARM defconfigs: add missing inclusions of linux/platform_device.h Patch 16559ae "kgdb: remove #include from kgdb.h" removed an implicit inclusion of linux/platform_device.h In a number of places. This adds back explicit inclusions in a few more places I found. Signed-off-by: Arnd Bergmann Cc: Greg Kroah-Hartman Cc: Florian Tobias Schandinat Signed-off-by: Greg Kroah-Hartman --- include/linux/platform_data/s3c-hsotg.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/s3c-hsotg.h b/include/linux/platform_data/s3c-hsotg.h index 8b79e0967f9c..3f1cbf95ec3b 100644 --- a/include/linux/platform_data/s3c-hsotg.h +++ b/include/linux/platform_data/s3c-hsotg.h @@ -15,6 +15,8 @@ #ifndef __LINUX_USB_S3C_HSOTG_H #define __LINUX_USB_S3C_HSOTG_H +struct platform_device; + enum s3c_hsotg_dmamode { S3C_HSOTG_DMA_NONE, /* do not use DMA at-all */ S3C_HSOTG_DMA_ONLY, /* always use DMA */ -- cgit v1.2.3 From 7bf9b9a0f0372d45b581f00173505fb76a9c5d23 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 27 Dec 2012 18:45:41 +0100 Subject: wireless: define operating mode action frame Define the action frame format, the VHT category and its action types and the field format and EID for operating mode notifications. The frame may be used outside of VHT context as well, so don't include "VHT" in the names. Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 7e8a498efe6d..67c1a6c45837 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -714,6 +714,30 @@ enum ieee80211_ht_chanwidth_values { IEEE80211_HT_CHANWIDTH_ANY = 1, }; +/** + * enum ieee80211_opmode_bits - VHT operating mode field bits + * @IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK: channel width mask + * @IEEE80211_OPMODE_NOTIF_CHANWIDTH_20MHZ: 20 MHz channel width + * @IEEE80211_OPMODE_NOTIF_CHANWIDTH_40MHZ: 40 MHz channel width + * @IEEE80211_OPMODE_NOTIF_CHANWIDTH_80MHZ: 80 MHz channel width + * @IEEE80211_OPMODE_NOTIF_CHANWIDTH_160MHZ: 160 MHz or 80+80 MHz channel width + * @IEEE80211_OPMODE_NOTIF_RX_NSS_MASK: number of spatial streams mask + * (the NSS value is the value of this field + 1) + * @IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT: number of spatial streams shift + * @IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF: indicates streams in SU-MIMO PPDU + * using a beamforming steering matrix + */ +enum ieee80211_vht_opmode_bits { + IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK = 3, + IEEE80211_OPMODE_NOTIF_CHANWIDTH_20MHZ = 0, + IEEE80211_OPMODE_NOTIF_CHANWIDTH_40MHZ = 1, + IEEE80211_OPMODE_NOTIF_CHANWIDTH_80MHZ = 2, + IEEE80211_OPMODE_NOTIF_CHANWIDTH_160MHZ = 3, + IEEE80211_OPMODE_NOTIF_RX_NSS_MASK = 0x70, + IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT = 4, + IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF = 0x80, +}; + #define WLAN_SA_QUERY_TR_ID_LEN 2 struct ieee80211_mgmt { @@ -844,6 +868,10 @@ struct ieee80211_mgmt { __le16 capability; u8 variable[0]; } __packed tdls_discover_resp; + struct { + u8 action_code; + u8 operating_mode; + } __packed vht_opmode_notif; } u; } __packed action; } u; @@ -1598,6 +1626,7 @@ enum ieee80211_eid { WLAN_EID_VHT_CAPABILITY = 191, WLAN_EID_VHT_OPERATION = 192, + WLAN_EID_OPMODE_NOTIF = 199, /* 802.11ad */ WLAN_EID_NON_TX_BSSID_CAP = 83, @@ -1652,6 +1681,7 @@ enum ieee80211_category { WLAN_CATEGORY_WMM = 17, WLAN_CATEGORY_FST = 18, WLAN_CATEGORY_UNPROT_DMG = 20, + WLAN_CATEGORY_VHT = 21, WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126, WLAN_CATEGORY_VENDOR_SPECIFIC = 127, }; @@ -1677,6 +1707,13 @@ enum ieee80211_ht_actioncode { WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7, }; +/* VHT action codes */ +enum ieee80211_vht_actioncode { + WLAN_VHT_ACTION_COMPRESSED_BF = 0, + WLAN_VHT_ACTION_GROUPID_MGMT = 1, + WLAN_VHT_ACTION_OPMODE_NOTIF = 2, +}; + /* Self Protected Action codes */ enum ieee80211_self_protected_actioncode { WLAN_SP_RESERVED = 0, -- cgit v1.2.3 From 0af83d3df5863224336a18c24a14fda542b712f5 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 27 Dec 2012 18:55:36 +0100 Subject: mac80211: handle VHT operating mode notification Handle the operating mode notification action frame. When the supported streams or the bandwidth change let the driver and rate control algorithm know. Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 67c1a6c45837..12b5996533ec 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -1301,6 +1301,7 @@ struct ieee80211_vht_operation { #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 0x00000002 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ 0x00000004 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ 0x00000008 +#define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK 0x0000000C #define IEEE80211_VHT_CAP_RXLDPC 0x00000010 #define IEEE80211_VHT_CAP_SHORT_GI_80 0x00000020 #define IEEE80211_VHT_CAP_SHORT_GI_160 0x00000040 -- cgit v1.2.3 From 4a3cb702b05868f67c4ee3da3380461c5b90b4ca Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 12 Feb 2013 16:43:19 +0100 Subject: mac80211: constify IE parsing Make all the parsed IE pointers const, and propagate the change to all the users etc. Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index 12b5996533ec..e085fcf52b26 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -2152,7 +2152,7 @@ static inline unsigned long ieee80211_tu_to_usec(unsigned long tu) * @tim_len: length of the TIM IE * @aid: the AID to look for */ -static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim, +static inline bool ieee80211_check_tim(const struct ieee80211_tim_ie *tim, u8 tim_len, u16 aid) { u8 mask; -- cgit v1.2.3 From c6f9d6c3bdeb337809d667ef2a41597229a1ce57 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 11 Feb 2013 14:27:08 +0100 Subject: mac80211: advertise operating mode notification capability Use the new extended capabilities advertising to advertise the fact that operating mode notification is supported. Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index e085fcf52b26..7e24fe0cfbcd 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -1776,6 +1776,8 @@ enum ieee80211_tdls_actioncode { #define WLAN_EXT_CAPA5_TDLS_ENABLED BIT(5) #define WLAN_EXT_CAPA5_TDLS_PROHIBITED BIT(6) +#define WLAN_EXT_CAPA8_OPMODE_NOTIF BIT(6) + /* TDLS specific payload type in the LLC/SNAP header */ #define WLAN_TDLS_SNAP_RFTYPE 0x2 -- cgit v1.2.3 From ea27c396174d5a4576853cbe7aeabeb9f7cba6e1 Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Tue, 12 Feb 2013 01:10:57 +0800 Subject: pinctrl: generic: rename input schmitt disable Rename PIN_CONFIG_INPUT_SCHMITT_DISABLE to PIN_CONFIG_INPUT_SCHMITT_ENABLE. It's used to make it more generialize. Signed-off-by: Haojian Zhuang Acked-by: Tony Lindgren Signed-off-by: Linus Walleij --- include/linux/pinctrl/pinconf-generic.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h index 3e7909aa5c03..72474e18f1e0 100644 --- a/include/linux/pinctrl/pinconf-generic.h +++ b/include/linux/pinctrl/pinconf-generic.h @@ -48,7 +48,9 @@ * argument is ignored. * @PIN_CONFIG_DRIVE_STRENGTH: the pin will output the current passed as * argument. The argument is in mA. - * @PIN_CONFIG_INPUT_SCHMITT_DISABLE: disable schmitt-trigger mode on the pin. + * @PIN_CONFIG_INPUT_SCHMITT_ENABLE: control schmitt-trigger mode on the pin. + * If the argument != 0, schmitt-trigger mode is enabled. If it's 0, + * schmitt-trigger mode is disabled. * @PIN_CONFIG_INPUT_SCHMITT: this will configure an input pin to run in * schmitt-trigger mode. If the schmitt-trigger has adjustable hysteresis, * the threshold value is given on a custom format as argument when @@ -82,7 +84,7 @@ enum pin_config_param { PIN_CONFIG_DRIVE_OPEN_DRAIN, PIN_CONFIG_DRIVE_OPEN_SOURCE, PIN_CONFIG_DRIVE_STRENGTH, - PIN_CONFIG_INPUT_SCHMITT_DISABLE, + PIN_CONFIG_INPUT_SCHMITT_ENABLE, PIN_CONFIG_INPUT_SCHMITT, PIN_CONFIG_INPUT_DEBOUNCE, PIN_CONFIG_POWER_SOURCE, -- cgit v1.2.3 From 73fb847a44224d5708550e4be7baba9da75e00af Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Mon, 4 Feb 2013 14:02:45 +0300 Subject: SUNRPC: introduce cache_detail->cache_request callback This callback will allow to simplify upcalls in further patches in this series. Signed-off-by: Stanislav Kinsbursky Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/cache.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h index 5dc9ee4d616e..4f1c8582053c 100644 --- a/include/linux/sunrpc/cache.h +++ b/include/linux/sunrpc/cache.h @@ -83,6 +83,10 @@ struct cache_detail { int (*cache_upcall)(struct cache_detail *, struct cache_head *); + void (*cache_request)(struct cache_detail *cd, + struct cache_head *ch, + char **bpp, int *blen); + int (*cache_parse)(struct cache_detail *, char *buf, int len); -- cgit v1.2.3 From 21cd1254d3402a72927ed744e8ac1a7cf532f1ea Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Mon, 4 Feb 2013 14:02:55 +0300 Subject: SUNRPC: remove "cache_request" argument in sunrpc_cache_pipe_upcall() function Passing this pointer is redundant since it's stored on cache_detail structure, which is also passed to sunrpc_cache_pipe_upcall () function. Signed-off-by: Stanislav Kinsbursky Signed-off-by: J. Bruce Fields --- include/linux/sunrpc/cache.h | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h index 4f1c8582053c..303399b1ba59 100644 --- a/include/linux/sunrpc/cache.h +++ b/include/linux/sunrpc/cache.h @@ -161,11 +161,7 @@ sunrpc_cache_update(struct cache_detail *detail, struct cache_head *new, struct cache_head *old, int hash); extern int -sunrpc_cache_pipe_upcall(struct cache_detail *detail, struct cache_head *h, - void (*cache_request)(struct cache_detail *, - struct cache_head *, - char **, - int *)); +sunrpc_cache_pipe_upcall(struct cache_detail *detail, struct cache_head *h); extern void cache_clean_deferred(void *owner); -- cgit v1.2.3 From 686855f5d833178e518d79e7912cdb3268a9fa69 Mon Sep 17 00:00:00 2001 From: Vladimir Davydov Date: Thu, 14 Feb 2013 18:19:58 +0400 Subject: sched: add wait_for_completion_io[_timeout] The only difference between wait_for_completion[_timeout]() and wait_for_completion_io[_timeout]() is that the latter calls io_schedule_timeout() instead of schedule_timeout() so that the caller is accounted as waiting for IO, not just sleeping. These functions can be used for correct iowait time accounting when the completion struct is actually used for waiting for IO (e.g. completion of a bio request in the block layer). Signed-off-by: Vladimir Davydov Acked-by: Ingo Molnar Signed-off-by: Jens Axboe --- include/linux/completion.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/completion.h b/include/linux/completion.h index 51494e6b5548..33f0280fd533 100644 --- a/include/linux/completion.h +++ b/include/linux/completion.h @@ -77,10 +77,13 @@ static inline void init_completion(struct completion *x) } extern void wait_for_completion(struct completion *); +extern void wait_for_completion_io(struct completion *); extern int wait_for_completion_interruptible(struct completion *x); extern int wait_for_completion_killable(struct completion *x); extern unsigned long wait_for_completion_timeout(struct completion *x, unsigned long timeout); +extern unsigned long wait_for_completion_io_timeout(struct completion *x, + unsigned long timeout); extern long wait_for_completion_interruptible_timeout( struct completion *x, unsigned long timeout); extern long wait_for_completion_killable_timeout( -- cgit v1.2.3 From f25cc71e634edcf8a15bc60a48f2b5f3ec9fbb1d Mon Sep 17 00:00:00 2001 From: Tim Gardner Date: Wed, 13 Feb 2013 08:40:16 -0700 Subject: lockd: nlmclnt_reclaim(): avoid stack overflow Even though nlmclnt_reclaim() is only one call into the stack frame, 928 bytes on the stack seems like a lot. Recode to dynamically allocate the request structure once from within the reclaimer task, then pass this pointer into nlmclnt_reclaim() for reuse on subsequent calls. smatch analysis: fs/lockd/clntproc.c:620 nlmclnt_reclaim() warn: 'reqst' puts 928 bytes on stack Also remove redundant assignment of 0 after memset. Cc: Trond Myklebust Signed-off-by: Tim Gardner Reviewed-by: Jeff Layton Signed-off-by: J. Bruce Fields --- include/linux/lockd/lockd.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h index f5a051a79273..a395f1e7998f 100644 --- a/include/linux/lockd/lockd.h +++ b/include/linux/lockd/lockd.h @@ -212,7 +212,8 @@ int nlmclnt_block(struct nlm_wait *block, struct nlm_rqst *req, long timeout) __be32 nlmclnt_grant(const struct sockaddr *addr, const struct nlm_lock *lock); void nlmclnt_recovery(struct nlm_host *); -int nlmclnt_reclaim(struct nlm_host *, struct file_lock *); +int nlmclnt_reclaim(struct nlm_host *, struct file_lock *, + struct nlm_rqst *); void nlmclnt_next_cookie(struct nlm_cookie *); /* -- cgit v1.2.3 From 14bbd6a565e1bcdc240d44687edb93f721cfdf99 Mon Sep 17 00:00:00 2001 From: Pravin B Shelar Date: Thu, 14 Feb 2013 09:44:49 +0000 Subject: net: Add skb_unclone() helper function. This function will be used in next GRE_GSO patch. This patch does not change any functionality. Signed-off-by: Pravin B Shelar Acked-by: Eric Dumazet --- include/linux/skbuff.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 9da99520ccd5..ca6ee7d93edb 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -804,6 +804,16 @@ static inline int skb_cloned(const struct sk_buff *skb) (atomic_read(&skb_shinfo(skb)->dataref) & SKB_DATAREF_MASK) != 1; } +static inline int skb_unclone(struct sk_buff *skb, gfp_t pri) +{ + might_sleep_if(pri & __GFP_WAIT); + + if (skb_cloned(skb)) + return pskb_expand_head(skb, 0, 0, pri); + + return 0; +} + /** * skb_header_cloned - is the header a clone * @skb: buffer to check -- cgit v1.2.3 From 05e8ef4ab2d8087d360e814d14da20b9f7fb2283 Mon Sep 17 00:00:00 2001 From: Pravin B Shelar Date: Thu, 14 Feb 2013 09:44:55 +0000 Subject: net: factor out skb_mac_gso_segment() from skb_gso_segment() This function will be used in next GRE_GSO patch. This patch does not change any functionality. It only exports skb_mac_gso_segment() function. [ Use skb_reset_mac_len() -DaveM ] Signed-off-by: Pravin B Shelar Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/netdevice.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 9deb672d999f..920361bc27e7 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2671,6 +2671,8 @@ extern void netdev_upper_dev_unlink(struct net_device *dev, extern int skb_checksum_help(struct sk_buff *skb); extern struct sk_buff *__skb_gso_segment(struct sk_buff *skb, netdev_features_t features, bool tx_path); +extern struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb, + netdev_features_t features); static inline struct sk_buff *skb_gso_segment(struct sk_buff *skb, netdev_features_t features) -- cgit v1.2.3 From 68c331631143f5f039baac99a650e0b9e1ea02b6 Mon Sep 17 00:00:00 2001 From: Pravin B Shelar Date: Thu, 14 Feb 2013 14:02:41 +0000 Subject: v4 GRE: Add TCP segmentation offload for GRE Following patch adds GRE protocol offload handler so that skb_gso_segment() can segment GRE packets. SKB GSO CB is added to keep track of total header length so that skb_segment can push entire header. e.g. in case of GRE, skb_segment need to push inner and outer headers to every segment. New NETIF_F_GRE_GSO feature is added for devices which support HW GRE TSO offload. Currently none of devices support it therefore GRE GSO always fall backs to software GSO. [ Compute pkt_len before ip_local_out() invocation. -DaveM ] Signed-off-by: Pravin B Shelar Signed-off-by: David S. Miller --- include/linux/netdev_features.h | 3 ++- include/linux/skbuff.h | 17 +++++++++++++++++ 2 files changed, 19 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h index 5ac32123035a..3dd39340430e 100644 --- a/include/linux/netdev_features.h +++ b/include/linux/netdev_features.h @@ -41,7 +41,7 @@ enum { NETIF_F_TSO_ECN_BIT, /* ... TCP ECN support */ NETIF_F_TSO6_BIT, /* ... TCPv6 segmentation */ NETIF_F_FSO_BIT, /* ... FCoE segmentation */ - NETIF_F_GSO_RESERVED1, /* ... free (fill GSO_MASK to 8 bits) */ + NETIF_F_GSO_GRE_BIT, /* ... GRE with TSO */ /**/NETIF_F_GSO_LAST, /* [can't be last bit, see GSO_MASK] */ NETIF_F_GSO_RESERVED2 /* ... free (fill GSO_MASK to 8 bits) */ = NETIF_F_GSO_LAST, @@ -102,6 +102,7 @@ enum { #define NETIF_F_VLAN_CHALLENGED __NETIF_F(VLAN_CHALLENGED) #define NETIF_F_RXFCS __NETIF_F(RXFCS) #define NETIF_F_RXALL __NETIF_F(RXALL) +#define NETIF_F_GRE_GSO __NETIF_F(GSO_GRE) /* Features valid for ethtool to change */ /* = all defined minus driver/device-class-related */ diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index ca6ee7d93edb..821c7f45d2a7 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -314,6 +314,8 @@ enum { SKB_GSO_TCPV6 = 1 << 4, SKB_GSO_FCOE = 1 << 5, + + SKB_GSO_GRE = 1 << 6, }; #if BITS_PER_LONG > 32 @@ -2732,6 +2734,21 @@ static inline struct sec_path *skb_sec_path(struct sk_buff *skb) } #endif +/* Keeps track of mac header offset relative to skb->head. + * It is useful for TSO of Tunneling protocol. e.g. GRE. + * For non-tunnel skb it points to skb_mac_header() and for + * tunnel skb it points to outer mac header. */ +struct skb_gso_cb { + int mac_offset; +}; +#define SKB_GSO_CB(skb) ((struct skb_gso_cb *)(skb)->cb) + +static inline int skb_tnl_header_len(const struct sk_buff *inner_skb) +{ + return (skb_mac_header(inner_skb) - inner_skb->head) - + SKB_GSO_CB(inner_skb)->mac_offset; +} + static inline bool skb_is_gso(const struct sk_buff *skb) { return skb_shinfo(skb)->gso_size; -- cgit v1.2.3 From ac6324e7021dfa917ce4f9a836318c3e46fbb84e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pali=20Roh=C3=A1r?= Date: Sun, 10 Feb 2013 18:32:18 +0100 Subject: bq2415x_charger: Add support for offline and 100mA mode MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit * Renamed mode BQ2415X_MODE_NONE to BQ2415X_MODE_OFF because this mode turning chaging completly off * Added new mode BQ2415X_MODE_NONE which enable charging with maximal current limit 100mA (this is minimal safe value for bq2415x chips) Signed-off-by: Pali Rohár Signed-off-by: Anton Vorontsov --- include/linux/power/bq2415x_charger.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/power/bq2415x_charger.h b/include/linux/power/bq2415x_charger.h index 97a1665eaeaf..8dcc0f46fc0a 100644 --- a/include/linux/power/bq2415x_charger.h +++ b/include/linux/power/bq2415x_charger.h @@ -75,7 +75,8 @@ /* Supported modes with maximal current limit */ enum bq2415x_mode { - BQ2415X_MODE_NONE, /* unknown or no charger (100mA) */ + BQ2415X_MODE_OFF, /* offline mode (charger disabled) */ + BQ2415X_MODE_NONE, /* unknown charger (100mA) */ BQ2415X_MODE_HOST_CHARGER, /* usb host/hub charger (500mA) */ BQ2415X_MODE_DEDICATED_CHARGER, /* dedicated charger (unlimited) */ BQ2415X_MODE_BOOST, /* boost mode (charging disabled) */ -- cgit v1.2.3 From 558bd3e8dc7a798c5c845f90cf038b9bbd2df2b8 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Sat, 9 Feb 2013 21:51:27 -0500 Subject: PM idle: remove global declaration of pm_idle pm_idle appears in no generic Linux code, it appears only in architecture-specific code. Thus, pm_idle should not be declared in pm.h. Architectures that use an idle function pointer should delcare one local to their architecture, and/or use cpuidle. Signed-off-by: Len Brown Reviewed-by: Kevin Hilman Tested-by: Kevin Hilman Cc: linux-pm@vger.kernel.org --- include/linux/pm.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pm.h b/include/linux/pm.h index 03d7bb145311..97bcf23e045a 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -31,7 +31,6 @@ /* * Callbacks for platform drivers to implement. */ -extern void (*pm_idle)(void); extern void (*pm_power_off)(void); extern void (*pm_power_off_prepare)(void); -- cgit v1.2.3 From e7e319a9c51409c7effe34333ea26facf2fab9e1 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Thu, 14 Feb 2013 12:16:43 -0600 Subject: libceph: improve packing in struct ceph_osd_req_op The layout of struct ceph_osd_req_op leaves lots of holes. Rearranging things a little for better field alignment reduces the size by a third. This resolves: http://tracker.ceph.com/issues/4163 Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osd_client.h | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 69287ccfe68a..82bf6338d6c1 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -157,6 +157,7 @@ struct ceph_osd_client { struct ceph_osd_req_op { u16 op; /* CEPH_OSD_OP_* */ + u32 payload_len; union { struct { u64 offset, length; @@ -165,23 +166,24 @@ struct ceph_osd_req_op { } extent; struct { const char *name; - u32 name_len; const char *val; + u32 name_len; u32 value_len; __u8 cmp_op; /* CEPH_OSD_CMPXATTR_OP_* */ __u8 cmp_mode; /* CEPH_OSD_CMPXATTR_MODE_* */ } xattr; struct { const char *class_name; - __u8 class_len; const char *method_name; - __u8 method_len; - __u8 argc; const char *indata; u32 indata_len; + __u8 class_len; + __u8 method_len; + __u8 argc; } cls; struct { - u64 cookie, count; + u64 cookie; + u64 count; } pgls; struct { u64 snapid; @@ -189,12 +191,11 @@ struct ceph_osd_req_op { struct { u64 cookie; u64 ver; - __u8 flag; u32 prot_ver; u32 timeout; + __u8 flag; } watch; }; - u32 payload_len; }; extern int ceph_osdc_init(struct ceph_osd_client *osdc, -- cgit v1.2.3 From 87f979d390f9ecfa3d0038a9f9a002a62f8a1895 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Fri, 15 Feb 2013 11:42:29 -0600 Subject: ceph: kill ceph_osdc_writepages() "nofail" parameter There is only one caller of ceph_osdc_writepages(), and it always passes the value true as its "nofail" argument. Get rid of that argument and replace its use in ceph_osdc_writepages() with the constant value true. This and a number of cleanup patches that follow resolve: http://tracker.ceph.com/issues/4126 Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osd_client.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 82bf6338d6c1..afcb255b016a 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -275,7 +275,7 @@ extern int ceph_osdc_writepages(struct ceph_osd_client *osdc, u32 truncate_seq, u64 truncate_size, struct timespec *mtime, struct page **pages, int nr_pages, - int flags, int do_sync, bool nofail); + int flags, int do_sync); /* watch/notify events */ extern int ceph_osdc_create_event(struct ceph_osd_client *osdc, -- cgit v1.2.3 From fbf8685fb155e12a9f4d4b966c7b3442ed557687 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Fri, 15 Feb 2013 11:42:29 -0600 Subject: ceph: kill ceph_osdc_writepages() "dosync" parameter There is only one caller of ceph_osdc_writepages(), and it always passes 0 as its "dosync" argument. Get rid of that argument and replace its use in ceph_osdc_writepages() with 0. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osd_client.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index afcb255b016a..7a63100a3e69 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -275,7 +275,7 @@ extern int ceph_osdc_writepages(struct ceph_osd_client *osdc, u32 truncate_seq, u64 truncate_size, struct timespec *mtime, struct page **pages, int nr_pages, - int flags, int do_sync); + int flags); /* watch/notify events */ extern int ceph_osdc_create_event(struct ceph_osd_client *osdc, -- cgit v1.2.3 From 2480882611e3ab844563dd3d0a822227604ab8fe Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Fri, 15 Feb 2013 11:42:29 -0600 Subject: ceph: kill ceph_osdc_writepages() "flags" parameter There is only one caller of ceph_osdc_writepages(), and it always passes 0 as its "flags" argument. Get rid of that argument and replace its use in ceph_osdc_writepages() with 0. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osd_client.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 7a63100a3e69..6540e8861998 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -274,8 +274,7 @@ extern int ceph_osdc_writepages(struct ceph_osd_client *osdc, u64 off, u64 len, u32 truncate_seq, u64 truncate_size, struct timespec *mtime, - struct page **pages, int nr_pages, - int flags); + struct page **pages, int nr_pages); /* watch/notify events */ extern int ceph_osdc_create_event(struct ceph_osd_client *osdc, -- cgit v1.2.3 From a3bea47e8bdd51d921e5b2045720d60140612c7c Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Fri, 15 Feb 2013 11:42:29 -0600 Subject: ceph: kill ceph_osdc_new_request() "num_reply" parameter The "num_reply" parameter to ceph_osdc_new_request() is never used inside that function, so get rid of it. Note that ceph_sync_write() passes 2 for that argument, while all other callers pass 1. It doesn't matter, but perhaps someone should verify this doesn't indicate a problem. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osd_client.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 6540e8861998..5812802bd8ae 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -234,8 +234,7 @@ extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *, int do_sync, u32 truncate_seq, u64 truncate_size, struct timespec *mtime, - bool use_mempool, int num_reply, - int page_align); + bool use_mempool, int page_align); extern void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, struct ceph_osd_request *req); -- cgit v1.2.3 From 60e56f138180e72fa8487d4b9c1c916013494f46 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Fri, 15 Feb 2013 11:42:29 -0600 Subject: libceph: kill ceph_calc_raw_layout() There is no caller of ceph_calc_raw_layout() outside of libceph, so there's no need to export from the module. Furthermore, there is only one caller, in calc_layout(), and it is not much more than a simple wrapper for that function. So get rid of ceph_calc_raw_layout() and embed it instead within calc_layout(). While touching "osd_client.c", get rid of the unnecessary forward declaration of __send_request(). Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osd_client.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 5812802bd8ae..c39e7ed4b203 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -207,11 +207,6 @@ extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc, extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg); -extern int ceph_calc_raw_layout(struct ceph_file_layout *layout, - u64 off, u64 *plen, u64 *bno, - struct ceph_osd_request *req, - struct ceph_osd_req_op *op); - extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, struct ceph_snap_context *snapc, unsigned int num_op, -- cgit v1.2.3 From 3c663bbdcdf9296e0fe3362acb9e81f49d7b72c6 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Fri, 15 Feb 2013 11:42:30 -0600 Subject: libceph: kill ceph_osdc_create_event() "one_shot" parameter There is only one caller of ceph_osdc_create_event(), and it provides 0 as its "one_shot" argument. Get rid of that argument and just use 0 in its place. Replace the code in handle_watch_notify() that executes if one_shot is nonzero in the event with a BUG_ON() call. While modifying "osd_client.c", give handle_watch_notify() static scope. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osd_client.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index c39e7ed4b203..39c55d61e159 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -273,8 +273,7 @@ extern int ceph_osdc_writepages(struct ceph_osd_client *osdc, /* watch/notify events */ extern int ceph_osdc_create_event(struct ceph_osd_client *osdc, void (*event_cb)(u64, u64, u8, void *), - int one_shot, void *data, - struct ceph_osd_event **pevent); + void *data, struct ceph_osd_event **pevent); extern void ceph_osdc_cancel_event(struct ceph_osd_event *event); extern int ceph_osdc_wait_event(struct ceph_osd_event *event, unsigned long timeout); -- cgit v1.2.3 From 2d2f522699fe8b827087941eb31b9a12cf465f17 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Fri, 15 Feb 2013 11:42:30 -0600 Subject: libceph: kill ceph_osdc_wait_event() There are no actual users of ceph_osdc_wait_event(). This would have been one-shot events, but we no longer support those so just get rid of this function. Since this leaves nothing else that waits for the completion of an event, we can get rid of the completion in a struct ceph_osd_event. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/osd_client.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 39c55d61e159..388158ff0cbc 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -107,7 +107,6 @@ struct ceph_osd_event { struct rb_node node; struct list_head osd_node; struct kref kref; - struct completion completion; }; struct ceph_osd_event_work { @@ -275,8 +274,6 @@ extern int ceph_osdc_create_event(struct ceph_osd_client *osdc, void (*event_cb)(u64, u64, u8, void *), void *data, struct ceph_osd_event **pevent); extern void ceph_osdc_cancel_event(struct ceph_osd_event *event); -extern int ceph_osdc_wait_event(struct ceph_osd_event *event, - unsigned long timeout); extern void ceph_osdc_put_event(struct ceph_osd_event *event); #endif -- cgit v1.2.3 From 0315a7770983bbe69211efed1aaee08324acd54c Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Fri, 15 Feb 2013 11:42:30 -0600 Subject: libceph: update rados.h Update most of "include/linux/ceph/rados.h" to match its user space counterpart in "src/include/rados.h" in the ceph tree. Almost everything that has changed is either: - added or revised comments - added definitions (therefore no real effect on existing code) - defining the same value a different way (e.g., "1 << 0" vs "1") The only exceptions are: - The declaration of ceph_osd_state_name() was excluded; that will be inserted in the next patch. - ceph_osd_op_mode_read() and ceph_osd_op_mode_modify() are defined differently, but they were never used in the kernel - CEPH_OSD_FLAG_PEERSTAT is now CEPH_OSD_FLAG_PEERSTAT_OLD, but that was never used in the kernel Anything that was present in this file but not in its user space counterpart was left intact here. I left the definitions of EOLDSNAPC and EBLACKLISTED using numerical values here; I'm not sure the right way to go with those. This and the next two commits resolve: http://tracker.ceph.com/issues/4164 Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/rados.h | 91 ++++++++++++++++++++++++++++++++++++---------- 1 file changed, 71 insertions(+), 20 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/rados.h b/include/linux/ceph/rados.h index 2c04afeead1c..9c3b4aaf516b 100644 --- a/include/linux/ceph/rados.h +++ b/include/linux/ceph/rados.h @@ -145,8 +145,10 @@ struct ceph_eversion { */ /* status bits */ -#define CEPH_OSD_EXISTS 1 -#define CEPH_OSD_UP 2 +#define CEPH_OSD_EXISTS (1<<0) +#define CEPH_OSD_UP (1<<1) +#define CEPH_OSD_AUTOOUT (1<<2) /* osd was automatically marked out */ +#define CEPH_OSD_NEW (1<<3) /* osd is new, never marked in */ /* osd weights. fixed point value: 0x10000 == 1.0 ("in"), 0 == "out" */ #define CEPH_OSD_IN 0x10000 @@ -161,9 +163,25 @@ struct ceph_eversion { #define CEPH_OSDMAP_PAUSERD (1<<2) /* pause all reads */ #define CEPH_OSDMAP_PAUSEWR (1<<3) /* pause all writes */ #define CEPH_OSDMAP_PAUSEREC (1<<4) /* pause recovery */ +#define CEPH_OSDMAP_NOUP (1<<5) /* block osd boot */ +#define CEPH_OSDMAP_NODOWN (1<<6) /* block osd mark-down/failure */ +#define CEPH_OSDMAP_NOOUT (1<<7) /* block osd auto mark-out */ +#define CEPH_OSDMAP_NOIN (1<<8) /* block osd auto mark-in */ +#define CEPH_OSDMAP_NOBACKFILL (1<<9) /* block osd backfill */ +#define CEPH_OSDMAP_NORECOVER (1<<10) /* block osd recovery and backfill */ + +/* + * The error code to return when an OSD can't handle a write + * because it is too large. + */ +#define OSD_WRITETOOBIG EMSGSIZE /* * osd ops + * + * WARNING: do not use these op codes directly. Use the helpers + * defined below instead. In certain cases, op code behavior was + * redefined, resulting in special-cases in the helpers. */ #define CEPH_OSD_OP_MODE 0xf000 #define CEPH_OSD_OP_MODE_RD 0x1000 @@ -177,6 +195,7 @@ struct ceph_eversion { #define CEPH_OSD_OP_TYPE_ATTR 0x0300 #define CEPH_OSD_OP_TYPE_EXEC 0x0400 #define CEPH_OSD_OP_TYPE_PG 0x0500 +#define CEPH_OSD_OP_TYPE_MULTI 0x0600 /* multiobject */ enum { /** data **/ @@ -217,6 +236,23 @@ enum { CEPH_OSD_OP_WATCH = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 15, + /* omap */ + CEPH_OSD_OP_OMAPGETKEYS = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 17, + CEPH_OSD_OP_OMAPGETVALS = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 18, + CEPH_OSD_OP_OMAPGETHEADER = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 19, + CEPH_OSD_OP_OMAPGETVALSBYKEYS = + CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 20, + CEPH_OSD_OP_OMAPSETVALS = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 21, + CEPH_OSD_OP_OMAPSETHEADER = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 22, + CEPH_OSD_OP_OMAPCLEAR = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 23, + CEPH_OSD_OP_OMAPRMKEYS = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 24, + CEPH_OSD_OP_OMAP_CMP = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 25, + + /** multi **/ + CEPH_OSD_OP_CLONERANGE = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_MULTI | 1, + CEPH_OSD_OP_ASSERT_SRC_VERSION = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_MULTI | 2, + CEPH_OSD_OP_SRC_CMPXATTR = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_MULTI | 3, + /** attrs **/ /* read */ CEPH_OSD_OP_GETXATTR = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_ATTR | 1, @@ -238,6 +274,7 @@ enum { CEPH_OSD_OP_SCRUB_RESERVE = CEPH_OSD_OP_MODE_SUB | 6, CEPH_OSD_OP_SCRUB_UNRESERVE = CEPH_OSD_OP_MODE_SUB | 7, CEPH_OSD_OP_SCRUB_STOP = CEPH_OSD_OP_MODE_SUB | 8, + CEPH_OSD_OP_SCRUB_MAP = CEPH_OSD_OP_MODE_SUB | 9, /** lock **/ CEPH_OSD_OP_WRLOCK = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 1, @@ -248,10 +285,12 @@ enum { CEPH_OSD_OP_DNLOCK = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 6, /** exec **/ + /* note: the RD bit here is wrong; see special-case below in helper */ CEPH_OSD_OP_CALL = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_EXEC | 1, /** pg **/ CEPH_OSD_OP_PGLS = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_PG | 1, + CEPH_OSD_OP_PGLS_FILTER = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_PG | 2, }; static inline int ceph_osd_op_type_lock(int op) @@ -274,6 +313,10 @@ static inline int ceph_osd_op_type_pg(int op) { return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_PG; } +static inline int ceph_osd_op_type_multi(int op) +{ + return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_MULTI; +} static inline int ceph_osd_op_mode_subop(int op) { @@ -281,11 +324,12 @@ static inline int ceph_osd_op_mode_subop(int op) } static inline int ceph_osd_op_mode_read(int op) { - return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_RD; + return (op & CEPH_OSD_OP_MODE_RD) && + op != CEPH_OSD_OP_CALL; } static inline int ceph_osd_op_mode_modify(int op) { - return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_WR; + return op & CEPH_OSD_OP_MODE_WR; } /* @@ -294,34 +338,38 @@ static inline int ceph_osd_op_mode_modify(int op) */ #define CEPH_OSD_TMAP_HDR 'h' #define CEPH_OSD_TMAP_SET 's' +#define CEPH_OSD_TMAP_CREATE 'c' /* create key */ #define CEPH_OSD_TMAP_RM 'r' +#define CEPH_OSD_TMAP_RMSLOPPY 'R' extern const char *ceph_osd_op_name(int op); - /* * osd op flags * * An op may be READ, WRITE, or READ|WRITE. */ enum { - CEPH_OSD_FLAG_ACK = 1, /* want (or is) "ack" ack */ - CEPH_OSD_FLAG_ONNVRAM = 2, /* want (or is) "onnvram" ack */ - CEPH_OSD_FLAG_ONDISK = 4, /* want (or is) "ondisk" ack */ - CEPH_OSD_FLAG_RETRY = 8, /* resend attempt */ - CEPH_OSD_FLAG_READ = 16, /* op may read */ - CEPH_OSD_FLAG_WRITE = 32, /* op may write */ - CEPH_OSD_FLAG_ORDERSNAP = 64, /* EOLDSNAP if snapc is out of order */ - CEPH_OSD_FLAG_PEERSTAT = 128, /* msg includes osd_peer_stat */ - CEPH_OSD_FLAG_BALANCE_READS = 256, - CEPH_OSD_FLAG_PARALLELEXEC = 512, /* execute op in parallel */ - CEPH_OSD_FLAG_PGOP = 1024, /* pg op, no object */ - CEPH_OSD_FLAG_EXEC = 2048, /* op may exec */ - CEPH_OSD_FLAG_EXEC_PUBLIC = 4096, /* op may exec (public) */ + CEPH_OSD_FLAG_ACK = 0x0001, /* want (or is) "ack" ack */ + CEPH_OSD_FLAG_ONNVRAM = 0x0002, /* want (or is) "onnvram" ack */ + CEPH_OSD_FLAG_ONDISK = 0x0004, /* want (or is) "ondisk" ack */ + CEPH_OSD_FLAG_RETRY = 0x0008, /* resend attempt */ + CEPH_OSD_FLAG_READ = 0x0010, /* op may read */ + CEPH_OSD_FLAG_WRITE = 0x0020, /* op may write */ + CEPH_OSD_FLAG_ORDERSNAP = 0x0040, /* EOLDSNAP if snapc is out of order */ + CEPH_OSD_FLAG_PEERSTAT_OLD = 0x0080, /* DEPRECATED msg includes osd_peer_stat */ + CEPH_OSD_FLAG_BALANCE_READS = 0x0100, + CEPH_OSD_FLAG_PARALLELEXEC = 0x0200, /* execute op in parallel */ + CEPH_OSD_FLAG_PGOP = 0x0400, /* pg op, no object */ + CEPH_OSD_FLAG_EXEC = 0x0800, /* op may exec */ + CEPH_OSD_FLAG_EXEC_PUBLIC = 0x1000, /* DEPRECATED op may exec (public) */ + CEPH_OSD_FLAG_LOCALIZE_READS = 0x2000, /* read from nearby replica, if any */ + CEPH_OSD_FLAG_RWORDERED = 0x4000, /* order wrt concurrent reads */ }; enum { CEPH_OSD_OP_FLAG_EXCL = 1, /* EXCL object create */ + CEPH_OSD_OP_FLAG_FAILOK = 2, /* continue despite failure */ }; #define EOLDSNAPC ERESTART /* ORDERSNAP flag set; writer has old snapc*/ @@ -381,7 +429,11 @@ struct ceph_osd_op { __le64 ver; __u8 flag; /* 0 = unwatch, 1 = watch */ } __attribute__ ((packed)) watch; -}; + struct { + __le64 offset, length; + __le64 src_offset; + } __attribute__ ((packed)) clonerange; + }; __le32 payload_len; } __attribute__ ((packed)); @@ -424,5 +476,4 @@ struct ceph_osd_reply_head { } __attribute__ ((packed)); - #endif -- cgit v1.2.3 From 4b568b1aaf23d0ce64b98d01d5ad1bcc7694440a Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Fri, 15 Feb 2013 11:42:30 -0600 Subject: libceph: add ceph_osd_state_name() Add the definition of ceph_osd_state_name(), to match its counterpart in user space. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/rados.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ceph/rados.h b/include/linux/ceph/rados.h index 9c3b4aaf516b..b65182aba6f7 100644 --- a/include/linux/ceph/rados.h +++ b/include/linux/ceph/rados.h @@ -150,6 +150,8 @@ struct ceph_eversion { #define CEPH_OSD_AUTOOUT (1<<2) /* osd was automatically marked out */ #define CEPH_OSD_NEW (1<<3) /* osd is new, never marked in */ +extern const char *ceph_osd_state_name(int s); + /* osd weights. fixed point value: 0x10000 == 1.0 ("in"), 0 == "out" */ #define CEPH_OSD_IN 0x10000 #define CEPH_OSD_OUT 0 -- cgit v1.2.3 From dd6f5e105d85e02bc41db0891eb07152b1746ad9 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Fri, 15 Feb 2013 11:42:30 -0600 Subject: libceph: update ceph_fs.h Update most of "include/linux/ceph/ceph_fs.h" to match its user space counterpart in "src/include/ceph_fs.h" in the ceph tree. Everything that has changed is either: - added definitions (therefore no real effect on existing code) - deleting unused symbols - added or revised comments There were some differences between the struct definitions for ceph_mon_subscribe_item and the open field of ceph_mds_request_args; those differences remain. This and the next commit resolve: http://tracker.ceph.com/issues/4165 Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/ceph_fs.h | 32 ++++++++++++++++++++++++-------- 1 file changed, 24 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h index cf6f4d998a76..2ad7b860f062 100644 --- a/include/linux/ceph/ceph_fs.h +++ b/include/linux/ceph/ceph_fs.h @@ -21,16 +21,14 @@ * internal cluster protocols separately from the public, * client-facing protocol. */ -#define CEPH_OSD_PROTOCOL 8 /* cluster internal */ -#define CEPH_MDS_PROTOCOL 12 /* cluster internal */ -#define CEPH_MON_PROTOCOL 5 /* cluster internal */ #define CEPH_OSDC_PROTOCOL 24 /* server/client */ #define CEPH_MDSC_PROTOCOL 32 /* server/client */ #define CEPH_MONC_PROTOCOL 15 /* server/client */ -#define CEPH_INO_ROOT 1 -#define CEPH_INO_CEPH 2 /* hidden .ceph dir */ +#define CEPH_INO_ROOT 1 +#define CEPH_INO_CEPH 2 /* hidden .ceph dir */ +#define CEPH_INO_DOTDOT 3 /* used by ceph fuse for parent (..) */ /* arbitrary limit on max # of monitors (cluster of 3 is typical) */ #define CEPH_MAX_MON 31 @@ -51,7 +49,7 @@ struct ceph_file_layout { __le32 fl_object_stripe_unit; /* UNUSED. for per-object parity, if any */ /* object -> pg layout */ - __le32 fl_unused; /* unused; used to be preferred primary (-1) */ + __le32 fl_unused; /* unused; used to be preferred primary for pg (-1 for none) */ __le32 fl_pg_pool; /* namespace, crush ruleset, rep level */ } __attribute__ ((packed)); @@ -101,6 +99,8 @@ struct ceph_dir_layout { #define CEPH_MSG_MON_SUBSCRIBE_ACK 16 #define CEPH_MSG_AUTH 17 #define CEPH_MSG_AUTH_REPLY 18 +#define CEPH_MSG_MON_GET_VERSION 19 +#define CEPH_MSG_MON_GET_VERSION_REPLY 20 /* client <-> mds */ #define CEPH_MSG_MDS_MAP 21 @@ -220,6 +220,11 @@ struct ceph_mon_subscribe_ack { struct ceph_fsid fsid; } __attribute__ ((packed)); +/* + * mdsmap flags + */ +#define CEPH_MDSMAP_DOWN (1<<0) /* cluster deliberately down */ + /* * mds states * > 0 -> in @@ -233,6 +238,7 @@ struct ceph_mon_subscribe_ack { #define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */ #define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */ #define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */ +#define CEPH_MDS_STATE_REPLAYONCE -9 /* up, replaying an active node's journal */ #define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */ #define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed @@ -264,6 +270,7 @@ extern const char *ceph_mds_state_name(int s); #define CEPH_LOCK_IXATTR 2048 #define CEPH_LOCK_IFLOCK 4096 /* advisory file locks */ #define CEPH_LOCK_INO 8192 /* immutable inode bits; not a lock */ +#define CEPH_LOCK_IPOLICY 16384 /* policy lock on dirs. MDS internal */ /* client_session ops */ enum { @@ -338,6 +345,12 @@ extern const char *ceph_mds_op_name(int op); #define CEPH_SETATTR_SIZE 32 #define CEPH_SETATTR_CTIME 64 +/* + * Ceph setxattr request flags. + */ +#define CEPH_XATTR_CREATE 1 +#define CEPH_XATTR_REPLACE 2 + union ceph_mds_request_args { struct { __le32 mask; /* CEPH_CAP_* */ @@ -522,14 +535,17 @@ int ceph_flags_to_mode(int flags); #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */ #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */ +#define CEPH_CAP_SIMPLE_BITS 2 +#define CEPH_CAP_FILE_BITS 8 + /* per-lock shift */ #define CEPH_CAP_SAUTH 2 #define CEPH_CAP_SLINK 4 #define CEPH_CAP_SXATTR 6 #define CEPH_CAP_SFILE 8 -#define CEPH_CAP_SFLOCK 20 +#define CEPH_CAP_SFLOCK 20 -#define CEPH_CAP_BITS 22 +#define CEPH_CAP_BITS 22 /* composed values */ #define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH) -- cgit v1.2.3 From b4278c961aca320839964e23cfc7906ff61af0c2 Mon Sep 17 00:00:00 2001 From: Gao feng Date: Mon, 18 Feb 2013 01:34:55 +0000 Subject: net: proc: remove proc_net_fops_create proc_net_fops_create has been replaced by proc_create, we can remove it now. Signed-off-by: Gao feng Signed-off-by: David S. Miller --- include/linux/proc_fs.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h index 32676b35d2f5..35ee1891ae25 100644 --- a/include/linux/proc_fs.h +++ b/include/linux/proc_fs.h @@ -171,8 +171,6 @@ static inline struct proc_dir_entry *create_proc_read_entry(const char *name, return res; } -extern struct proc_dir_entry *proc_net_fops_create(struct net *net, - const char *name, umode_t mode, const struct file_operations *fops); extern void proc_net_remove(struct net *net, const char *name); extern struct proc_dir_entry *proc_net_mkdir(struct net *net, const char *name, struct proc_dir_entry *parent); @@ -184,7 +182,6 @@ extern int proc_alloc_inum(unsigned int *pino); extern void proc_free_inum(unsigned int inum); #else -#define proc_net_fops_create(net, name, mode, fops) ({ (void)(mode), NULL; }) static inline void proc_net_remove(struct net *net, const char *name) {} static inline void proc_flush_task(struct task_struct *task) -- cgit v1.2.3 From c2399059a389ba686fa7f45d8913a708914752c4 Mon Sep 17 00:00:00 2001 From: Gao feng Date: Mon, 18 Feb 2013 01:34:57 +0000 Subject: net: proc: remove proc_net_remove proc_net_remove has been replaced by remove_proc_entry. we can remove it now. Signed-off-by: Gao feng Signed-off-by: David S. Miller --- include/linux/proc_fs.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h index 35ee1891ae25..319f69422667 100644 --- a/include/linux/proc_fs.h +++ b/include/linux/proc_fs.h @@ -171,7 +171,6 @@ static inline struct proc_dir_entry *create_proc_read_entry(const char *name, return res; } -extern void proc_net_remove(struct net *net, const char *name); extern struct proc_dir_entry *proc_net_mkdir(struct net *net, const char *name, struct proc_dir_entry *parent); @@ -182,8 +181,6 @@ extern int proc_alloc_inum(unsigned int *pino); extern void proc_free_inum(unsigned int inum); #else -static inline void proc_net_remove(struct net *net, const char *name) {} - static inline void proc_flush_task(struct task_struct *task) { } -- cgit v1.2.3 From 900ff8c6321418dafa03c22e215cb9646a2541b9 Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Mon, 18 Feb 2013 19:20:33 +0000 Subject: net: move procfs code to net/core/net-procfs.c Similar to net/core/net-sysfs.c, group procfs code to a single unit. Cc: "David S. Miller" Signed-off-by: Cong Wang Signed-off-by: David S. Miller --- include/linux/netdevice.h | 36 +++++++++++++++++++++++++++++++++--- 1 file changed, 33 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 920361bc27e7..f111b4f038f3 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2692,9 +2692,9 @@ extern void net_enable_timestamp(void); extern void net_disable_timestamp(void); #ifdef CONFIG_PROC_FS -extern void *dev_seq_start(struct seq_file *seq, loff_t *pos); -extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos); -extern void dev_seq_stop(struct seq_file *seq, void *v); +extern int __init dev_proc_init(void); +#else +#define dev_proc_init() 0 #endif extern int netdev_class_create_file(struct class_attribute *class_attr); @@ -2896,4 +2896,34 @@ do { \ }) #endif +/* + * The list of packet types we will receive (as opposed to discard) + * and the routines to invoke. + * + * Why 16. Because with 16 the only overlap we get on a hash of the + * low nibble of the protocol value is RARP/SNAP/X.25. + * + * NOTE: That is no longer true with the addition of VLAN tags. Not + * sure which should go first, but I bet it won't make much + * difference if we are running VLANs. The good news is that + * this protocol won't be in the list unless compiled in, so + * the average user (w/out VLANs) will not be adversely affected. + * --BLG + * + * 0800 IP + * 8100 802.1Q VLAN + * 0001 802.3 + * 0002 AX.25 + * 0004 802.2 + * 8035 RARP + * 0005 SNAP + * 0805 X.25 + * 0806 ARP + * 8137 IPX + * 0009 Localtalk + * 86DD IPv6 + */ +#define PTYPE_HASH_SIZE (16) +#define PTYPE_HASH_MASK (PTYPE_HASH_SIZE - 1) + #endif /* _LINUX_NETDEVICE_H */ -- cgit v1.2.3 From 77852fea6e2442a0e654a9292060489895de18c7 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Sat, 16 Feb 2013 09:46:48 +0100 Subject: sched/rt: Add header to IA64 relied on it through sched.h inclusion: arch/ia64/kernel/init_task.c:38:11: error: 'MAX_PRIO' undeclared here (not in a function) arch/ia64/kernel/init_task.c:38:11: error: 'RR_TIMESLICE' undeclared here (not in a function) Reported-by: kbuild test robot Cc: Clark Williams Cc: Peter Zijlstra Cc: Steven Rostedt Link: http://lkml.kernel.org/n/tip-xaan1twswggedMR0airtpjui@git.kernel.org Signed-off-by: Ingo Molnar --- include/linux/init_task.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/init_task.h b/include/linux/init_task.h index cc898b871cef..5cd0f0949927 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -12,6 +12,7 @@ #include #include #include +#include #ifdef CONFIG_SMP # define INIT_PUSHABLE_TASKS(tsk) \ -- cgit v1.2.3 From 5cd3f5affad2109fd1458aab3f6216f2181e26ea Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Thu, 24 Jan 2013 21:53:17 +0100 Subject: lockdep: Silence warning if CONFIG_LOCKDEP isn't set MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Since commit c9a4962881929df7f1ef6e63e1b9da304faca4dd ("nfsd: make client_lock per net") compiling nfs4state.o without CONFIG_LOCKDEP set, triggers this GCC warning: fs/nfsd/nfs4state.c: In function ‘free_client’: fs/nfsd/nfs4state.c:1051:19: warning: unused variable ‘nn’ [-Wunused-variable] The cause of that warning is that lockdep_assert_held() compiles away if CONFIG_LOCKDEP is not set. Silence this warning by using the argument to lockdep_assert_held() as a nop if CONFIG_LOCKDEP is not set. Signed-off-by: Paul Bolle Cc: Peter Zijlstra Cc: Stanislav Kinsbursky Cc: J. Bruce Fields Link: http://lkml.kernel.org/r/1359060797.1325.33.camel@x61.thuisdomein Signed-off-by: Ingo Molnar -- include/linux/lockdep.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- include/linux/lockdep.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 2bca44b0893c..f05631effc73 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -410,7 +410,7 @@ struct lock_class_key { }; #define lockdep_depth(tsk) (0) -#define lockdep_assert_held(l) do { } while (0) +#define lockdep_assert_held(l) do { (void)(l); } while (0) #define lockdep_recursing(tsk) (0) -- cgit v1.2.3 From eece09ec213e93333010bf4c6bb9175b32229c54 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sun, 17 Jul 2011 21:25:03 +0200 Subject: locking: Various static lock initializer fixes The static lock initializers want to be fed the proper name of the lock and not some random string. In mainline random strings are obfuscating the readability of debug output, but for RT they prevent the spinlock substitution. Fix it up. Signed-off-by: Thomas Gleixner --- include/linux/idr.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/idr.h b/include/linux/idr.h index de7e190f1af4..e5eb125effe6 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -136,7 +136,7 @@ struct ida { struct ida_bitmap *free_bitmap; }; -#define IDA_INIT(name) { .idr = IDR_INIT(name), .free_bitmap = NULL, } +#define IDA_INIT(name) { .idr = IDR_INIT((name).idr), .free_bitmap = NULL, } #define DEFINE_IDA(name) struct ida name = IDA_INIT(name) int ida_pre_get(struct ida *ida, gfp_t gfp_mask); -- cgit v1.2.3 From 65c9d1bbc9f32c568a4f7ad154c9a10b0028df52 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 16 Jul 2011 18:38:22 +0200 Subject: seqlock: Remove unused functions Signed-off-by: Thomas Gleixner --- include/linux/seqlock.h | 21 --------------------- 1 file changed, 21 deletions(-) (limited to 'include/linux') diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h index 600060e25ec6..cb0599ca049c 100644 --- a/include/linux/seqlock.h +++ b/include/linux/seqlock.h @@ -69,17 +69,6 @@ static inline void write_sequnlock(seqlock_t *sl) spin_unlock(&sl->lock); } -static inline int write_tryseqlock(seqlock_t *sl) -{ - int ret = spin_trylock(&sl->lock); - - if (ret) { - ++sl->sequence; - smp_wmb(); - } - return ret; -} - /* Start of read calculation -- fetch last complete writer token */ static __always_inline unsigned read_seqbegin(const seqlock_t *sl) { @@ -269,14 +258,4 @@ static inline void write_seqcount_barrier(seqcount_t *s) #define write_sequnlock_bh(lock) \ do { write_sequnlock(lock); local_bh_enable(); } while(0) -#define read_seqbegin_irqsave(lock, flags) \ - ({ local_irq_save(flags); read_seqbegin(lock); }) - -#define read_seqretry_irqrestore(lock, iv, flags) \ - ({ \ - int ret = read_seqretry(lock, iv); \ - local_irq_restore(flags); \ - ret; \ - }) - #endif /* __LINUX_SEQLOCK_H */ -- cgit v1.2.3 From 6617feca15c68aad12f4a1edd8d8e2ef8d5b4ae5 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 16 Jul 2011 18:40:26 +0200 Subject: seqlock: Use seqcount infrastructure No point in having different implementations for the same thing. Change the macro mess to inline functions where possible. Signed-off-by: Thomas Gleixner --- include/linux/seqlock.h | 174 +++++++++++++++++++++++++----------------------- 1 file changed, 92 insertions(+), 82 deletions(-) (limited to 'include/linux') diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h index cb0599ca049c..18299057402f 100644 --- a/include/linux/seqlock.h +++ b/include/linux/seqlock.h @@ -30,81 +30,12 @@ #include #include -typedef struct { - unsigned sequence; - spinlock_t lock; -} seqlock_t; - -/* - * These macros triggered gcc-3.x compile-time problems. We think these are - * OK now. Be cautious. - */ -#define __SEQLOCK_UNLOCKED(lockname) \ - { 0, __SPIN_LOCK_UNLOCKED(lockname) } - -#define seqlock_init(x) \ - do { \ - (x)->sequence = 0; \ - spin_lock_init(&(x)->lock); \ - } while (0) - -#define DEFINE_SEQLOCK(x) \ - seqlock_t x = __SEQLOCK_UNLOCKED(x) - -/* Lock out other writers and update the count. - * Acts like a normal spin_lock/unlock. - * Don't need preempt_disable() because that is in the spin_lock already. - */ -static inline void write_seqlock(seqlock_t *sl) -{ - spin_lock(&sl->lock); - ++sl->sequence; - smp_wmb(); -} - -static inline void write_sequnlock(seqlock_t *sl) -{ - smp_wmb(); - sl->sequence++; - spin_unlock(&sl->lock); -} - -/* Start of read calculation -- fetch last complete writer token */ -static __always_inline unsigned read_seqbegin(const seqlock_t *sl) -{ - unsigned ret; - -repeat: - ret = ACCESS_ONCE(sl->sequence); - if (unlikely(ret & 1)) { - cpu_relax(); - goto repeat; - } - smp_rmb(); - - return ret; -} - -/* - * Test if reader processed invalid data. - * - * If sequence value changed then writer changed data while in section. - */ -static __always_inline int read_seqretry(const seqlock_t *sl, unsigned start) -{ - smp_rmb(); - - return unlikely(sl->sequence != start); -} - - /* * Version using sequence counter only. * This can be used when code has its own mutex protecting the * updating starting before the write_seqcountbeqin() and ending * after the write_seqcount_end(). */ - typedef struct seqcount { unsigned sequence; } seqcount_t; @@ -207,7 +138,6 @@ static inline int __read_seqcount_retry(const seqcount_t *s, unsigned start) static inline int read_seqcount_retry(const seqcount_t *s, unsigned start) { smp_rmb(); - return __read_seqcount_retry(s, start); } @@ -241,21 +171,101 @@ static inline void write_seqcount_barrier(seqcount_t *s) s->sequence+=2; } +typedef struct { + struct seqcount seqcount; + spinlock_t lock; +} seqlock_t; + +/* + * These macros triggered gcc-3.x compile-time problems. We think these are + * OK now. Be cautious. + */ +#define __SEQLOCK_UNLOCKED(lockname) \ + { \ + .seqcount = SEQCNT_ZERO, \ + .lock = __SPIN_LOCK_UNLOCKED(lockname) \ + } + +#define seqlock_init(x) \ + do { \ + seqcount_init(&(x)->seqcount); \ + spin_lock_init(&(x)->lock); \ + } while (0) + +#define DEFINE_SEQLOCK(x) \ + seqlock_t x = __SEQLOCK_UNLOCKED(x) + +/* + * Read side functions for starting and finalizing a read side section. + */ +static inline unsigned read_seqbegin(const seqlock_t *sl) +{ + return read_seqcount_begin(&sl->seqcount); +} + +static inline unsigned read_seqretry(const seqlock_t *sl, unsigned start) +{ + return read_seqcount_retry(&sl->seqcount, start); +} + /* - * Possible sw/hw IRQ protected versions of the interfaces. + * Lock out other writers and update the count. + * Acts like a normal spin_lock/unlock. + * Don't need preempt_disable() because that is in the spin_lock already. */ +static inline void write_seqlock(seqlock_t *sl) +{ + spin_lock(&sl->lock); + write_seqcount_begin(&sl->seqcount); +} + +static inline void write_sequnlock(seqlock_t *sl) +{ + write_seqcount_end(&sl->seqcount); + spin_unlock(&sl->lock); +} + +static inline void write_seqlock_bh(seqlock_t *sl) +{ + spin_lock_bh(&sl->lock); + write_seqcount_begin(&sl->seqcount); +} + +static inline void write_sequnlock_bh(seqlock_t *sl) +{ + write_seqcount_end(&sl->seqcount); + spin_unlock_bh(&sl->lock); +} + +static inline void write_seqlock_irq(seqlock_t *sl) +{ + spin_lock_irq(&sl->lock); + write_seqcount_begin(&sl->seqcount); +} + +static inline void write_sequnlock_irq(seqlock_t *sl) +{ + write_seqcount_end(&sl->seqcount); + spin_unlock_irq(&sl->lock); +} + +static inline unsigned long __write_seqlock_irqsave(seqlock_t *sl) +{ + unsigned long flags; + + spin_lock_irqsave(&sl->lock, flags); + write_seqcount_begin(&sl->seqcount); + return flags; +} + #define write_seqlock_irqsave(lock, flags) \ - do { local_irq_save(flags); write_seqlock(lock); } while (0) -#define write_seqlock_irq(lock) \ - do { local_irq_disable(); write_seqlock(lock); } while (0) -#define write_seqlock_bh(lock) \ - do { local_bh_disable(); write_seqlock(lock); } while (0) + do { flags = __write_seqlock_irqsave(lock); } while (0) -#define write_sequnlock_irqrestore(lock, flags) \ - do { write_sequnlock(lock); local_irq_restore(flags); } while(0) -#define write_sequnlock_irq(lock) \ - do { write_sequnlock(lock); local_irq_enable(); } while(0) -#define write_sequnlock_bh(lock) \ - do { write_sequnlock(lock); local_bh_enable(); } while(0) +static inline void +write_sequnlock_irqrestore(seqlock_t *sl, unsigned long flags) +{ + write_seqcount_end(&sl->seqcount); + spin_unlock_irqrestore(&sl->lock, flags); +} #endif /* __LINUX_SEQLOCK_H */ -- cgit v1.2.3 From 4fc1a601f147abe3bfb4d70fe718110ed21953e1 Mon Sep 17 00:00:00 2001 From: Gao feng Date: Tue, 19 Feb 2013 00:43:10 +0000 Subject: net: proc: fix build failed when procfs is not configured commit d4beaa66add8aebf83ab16d2fde4e4de8dac36df "net: proc: change proc_net_fops_create to proc_create" uses proc_create to replace proc_net_fops_create, when CONFIG_PROC isn't configured, some build error will occurs. net/packet/af_packet.c: In function 'packet_net_init': net/packet/af_packet.c:3831:48: error: 'packet_seq_fops' undeclared (first use in this function) net/packet/af_packet.c:3831:48: note: each undeclared identifier is reported only once for each function it appears in There may be other build fails like above,this patch change proc_create from function to macros when CONFIG_PROC is not configured,just like what proc_net_fops_create did before this commit. Reported-by: Fengguang Wu Signed-off-by: Gao feng Signed-off-by: David S. Miller --- include/linux/proc_fs.h | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h index 319f69422667..d0a1f2ca1c3f 100644 --- a/include/linux/proc_fs.h +++ b/include/linux/proc_fs.h @@ -187,12 +187,9 @@ static inline void proc_flush_task(struct task_struct *task) static inline struct proc_dir_entry *create_proc_entry(const char *name, umode_t mode, struct proc_dir_entry *parent) { return NULL; } -static inline struct proc_dir_entry *proc_create(const char *name, - umode_t mode, struct proc_dir_entry *parent, - const struct file_operations *proc_fops) -{ - return NULL; -} + +#define proc_create(name, mode, parent, fops) ({ (void)(mode), NULL; }) + static inline struct proc_dir_entry *proc_create_data(const char *name, umode_t mode, struct proc_dir_entry *parent, const struct file_operations *proc_fops, void *data) -- cgit v1.2.3 From cd0615746ba0f6643fb984345ae6ee0b73404ca6 Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Tue, 19 Feb 2013 02:47:05 +0000 Subject: net: fix a build failure when !CONFIG_PROC_FS When !CONFIG_PROC_FS dev_mcast_init() is not defined, actually we can just merge dev_mcast_init() into dev_proc_init(). Reported-by: Gao feng Cc: Gao feng Cc: "David S. Miller" Signed-off-by: Cong Wang Signed-off-by: David S. Miller --- include/linux/netdevice.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index f111b4f038f3..b3d00fa4b314 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2646,7 +2646,6 @@ extern void netdev_notify_peers(struct net_device *dev); extern void netdev_features_change(struct net_device *dev); /* Load a device via the kmod */ extern void dev_load(struct net *net, const char *name); -extern void dev_mcast_init(void); extern struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev, struct rtnl_link_stats64 *storage); extern void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64, -- cgit v1.2.3 From f84adf4921ae3115502f44ff467b04bf2f88cf04 Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Wed, 13 Feb 2013 13:01:55 -0500 Subject: xen-blkfront: drop the use of llist_for_each_entry_safe Replace llist_for_each_entry_safe with a while loop. llist_for_each_entry_safe can trigger a bug in GCC 4.1, so it's best to remove it and use a while loop and do the deletion manually. Specifically this bug can be triggered by hot-unplugging a disk, either by doing xm block-detach or by save/restore cycle. BUG: unable to handle kernel paging request at fffffffffffffff0 IP: [] blkif_free+0x63/0x130 [xen_blkfront] The crash call trace is: ... bad_area_nosemaphore+0x13/0x20 do_page_fault+0x25e/0x4b0 page_fault+0x25/0x30 ? blkif_free+0x63/0x130 [xen_blkfront] blkfront_resume+0x46/0xa0 [xen_blkfront] xenbus_dev_resume+0x6c/0x140 pm_op+0x192/0x1b0 device_resume+0x82/0x1e0 dpm_resume+0xc9/0x1a0 dpm_resume_end+0x15/0x30 do_suspend+0x117/0x1e0 When drilling down to the assembler code, on newer GCC it does .L29: cmpq $-16, %r12 #, persistent_gnt check je .L30 #, out of the loop .L25: ... code in the loop testq %r13, %r13 # n je .L29 #, back to the top of the loop cmpq $-16, %r12 #, persistent_gnt check movq 16(%r12), %r13 # .node.next, n jne .L25 #, back to the top of the loop .L30: While on GCC 4.1, it is: L78: ... code in the loop testq %r13, %r13 # n je .L78 #, back to the top of the loop movq 16(%rbx), %r13 # .node.next, n jmp .L78 #, back to the top of the loop Which basically means that the exit loop condition instead of being: &(pos)->member != NULL; is: ; which makes the loop unbound. Since xen-blkfront is the only user of the llist_for_each_entry_safe macro remove it from llist.h. Orabug: 16263164 CC: stable@vger.kernel.org Signed-off-by: Konrad Rzeszutek Wilk --- include/linux/llist.h | 25 ------------------------- 1 file changed, 25 deletions(-) (limited to 'include/linux') diff --git a/include/linux/llist.h b/include/linux/llist.h index d0ab98f73d38..a5199f6d0e82 100644 --- a/include/linux/llist.h +++ b/include/linux/llist.h @@ -124,31 +124,6 @@ static inline void init_llist_head(struct llist_head *list) &(pos)->member != NULL; \ (pos) = llist_entry((pos)->member.next, typeof(*(pos)), member)) -/** - * llist_for_each_entry_safe - iterate safely against remove over some entries - * of lock-less list of given type. - * @pos: the type * to use as a loop cursor. - * @n: another type * to use as a temporary storage. - * @node: the fist entry of deleted list entries. - * @member: the name of the llist_node with the struct. - * - * In general, some entries of the lock-less list can be traversed - * safely only after being removed from list, so start with an entry - * instead of list head. This variant allows removal of entries - * as we iterate. - * - * If being used on entries deleted from lock-less list directly, the - * traverse order is from the newest to the oldest added entry. If - * you want to traverse from the oldest to the newest, you must - * reverse the order by yourself before traversing. - */ -#define llist_for_each_entry_safe(pos, n, node, member) \ - for ((pos) = llist_entry((node), typeof(*(pos)), member), \ - (n) = (pos)->member.next; \ - &(pos)->member != NULL; \ - (pos) = llist_entry(n, typeof(*(pos)), member), \ - (n) = (&(pos)->member != NULL) ? (pos)->member.next : NULL) - /** * llist_empty - tests whether a lock-less list is empty * @head: the list to test -- cgit v1.2.3 From b324814e8436772cb3367b14149ba003a9954525 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Wed, 6 Feb 2013 13:11:38 -0600 Subject: libceph: use void pointers in page vector functions The functions used for working with ceph page vectors are defined with char pointers, but they're really intended to operate on untyped data. Change the types of these function parameters to (void *) to reflect this. (Note that the functions now assume void pointer arithmetic works like arithmetic on char pointers.) Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/libceph.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h index c44275ab375c..2250f8bb2490 100644 --- a/include/linux/ceph/libceph.h +++ b/include/linux/ceph/libceph.h @@ -222,7 +222,7 @@ extern int ceph_open_session(struct ceph_client *client); /* pagevec.c */ extern void ceph_release_page_vector(struct page **pages, int num_pages); -extern struct page **ceph_get_direct_page_vector(const char __user *data, +extern struct page **ceph_get_direct_page_vector(const void __user *data, int num_pages, bool write_page); extern void ceph_put_page_vector(struct page **pages, int num_pages, @@ -230,15 +230,15 @@ extern void ceph_put_page_vector(struct page **pages, int num_pages, extern void ceph_release_page_vector(struct page **pages, int num_pages); extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags); extern int ceph_copy_user_to_page_vector(struct page **pages, - const char __user *data, + const void __user *data, loff_t off, size_t len); extern int ceph_copy_to_page_vector(struct page **pages, - const char *data, + const void *data, loff_t off, size_t len); extern int ceph_copy_from_page_vector(struct page **pages, - char *data, + void *data, loff_t off, size_t len); -extern int ceph_copy_page_vector_to_user(struct page **pages, char __user *data, +extern int ceph_copy_page_vector_to_user(struct page **pages, void __user *data, loff_t off, size_t len); extern void ceph_zero_page_vector_range(int off, int len, struct page **pages); -- cgit v1.2.3 From 903bb32e890237ca43ab847e561e5377cfe0fdb3 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Wed, 6 Feb 2013 13:11:38 -0600 Subject: libceph: drop return value from page vector copy routines The return values provided for ceph_copy_to_page_vector() and ceph_copy_from_page_vector() serve no purpose, so get rid of them. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- include/linux/ceph/libceph.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h index 2250f8bb2490..29818fc3fa49 100644 --- a/include/linux/ceph/libceph.h +++ b/include/linux/ceph/libceph.h @@ -232,10 +232,10 @@ extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags); extern int ceph_copy_user_to_page_vector(struct page **pages, const void __user *data, loff_t off, size_t len); -extern int ceph_copy_to_page_vector(struct page **pages, +extern void ceph_copy_to_page_vector(struct page **pages, const void *data, loff_t off, size_t len); -extern int ceph_copy_from_page_vector(struct page **pages, +extern void ceph_copy_from_page_vector(struct page **pages, void *data, loff_t off, size_t len); extern int ceph_copy_page_vector_to_user(struct page **pages, void __user *data, -- cgit v1.2.3 From 1c3e826482ab698e418c7a894440e62c76aac893 Mon Sep 17 00:00:00 2001 From: Sha Zhengju Date: Wed, 20 Feb 2013 17:14:38 +0800 Subject: sched/core: Remove the obsolete and unused nr_uninterruptible() function Signed-off-by: Sha Zhengju Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1361351678-8065-1-git-send-email-handai.szj@taobao.com Signed-off-by: Ingo Molnar --- include/linux/sched.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 33cc42130371..f9ca237df7e8 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -98,7 +98,6 @@ extern int nr_threads; DECLARE_PER_CPU(unsigned long, process_counts); extern int nr_processes(void); extern unsigned long nr_running(void); -extern unsigned long nr_uninterruptible(void); extern unsigned long nr_iowait(void); extern unsigned long nr_iowait_cpu(int cpu); extern unsigned long this_cpu_load(void); -- cgit v1.2.3 From 55e301fd57a6239ec14b91a1cf2e70b3dd135194 Mon Sep 17 00:00:00 2001 From: Filipe Brandenburger Date: Tue, 29 Jan 2013 06:04:50 +0000 Subject: Btrfs: move fs/btrfs/ioctl.h to include/uapi/linux/btrfs.h The header file will then be installed under /usr/include/linux so that userspace applications can refer to Btrfs ioctls by name and use the same structs used internally in the kernel. Signed-off-by: Filipe Brandenburger Signed-off-by: Josef Bacik --- include/linux/btrfs.h | 6 ++++++ 1 file changed, 6 insertions(+) create mode 100644 include/linux/btrfs.h (limited to 'include/linux') diff --git a/include/linux/btrfs.h b/include/linux/btrfs.h new file mode 100644 index 000000000000..22d799147db2 --- /dev/null +++ b/include/linux/btrfs.h @@ -0,0 +1,6 @@ +#ifndef _LINUX_BTRFS_H +#define _LINUX_BTRFS_H + +#include + +#endif /* _LINUX_BTRFS_H */ -- cgit v1.2.3 From 8b975bd3f9089f8ee5d7bbfd798537b992bbc7e7 Mon Sep 17 00:00:00 2001 From: "Markus F.X.J. Oberhumer" Date: Mon, 13 Aug 2012 17:25:44 +0200 Subject: lib/lzo: Update LZO compression to current upstream version This commit updates the kernel LZO code to the current upsteam version which features a significant speed improvement - benchmarking the Calgary and Silesia test corpora typically shows a doubled performance in both compression and decompression on modern i386/x86_64/powerpc machines. Signed-off-by: Markus F.X.J. Oberhumer --- include/linux/lzo.h | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/lzo.h b/include/linux/lzo.h index d793497ec1ca..a0848d9377e5 100644 --- a/include/linux/lzo.h +++ b/include/linux/lzo.h @@ -4,28 +4,28 @@ * LZO Public Kernel Interface * A mini subset of the LZO real-time data compression library * - * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer + * Copyright (C) 1996-2012 Markus F.X.J. Oberhumer * * The full LZO package can be found at: * http://www.oberhumer.com/opensource/lzo/ * - * Changed for kernel use by: + * Changed for Linux kernel use by: * Nitin Gupta * Richard Purdie */ -#define LZO1X_MEM_COMPRESS (16384 * sizeof(unsigned char *)) -#define LZO1X_1_MEM_COMPRESS LZO1X_MEM_COMPRESS +#define LZO1X_1_MEM_COMPRESS (8192 * sizeof(unsigned short)) +#define LZO1X_MEM_COMPRESS LZO1X_1_MEM_COMPRESS #define lzo1x_worst_compress(x) ((x) + ((x) / 16) + 64 + 3) -/* This requires 'workmem' of size LZO1X_1_MEM_COMPRESS */ +/* This requires 'wrkmem' of size LZO1X_1_MEM_COMPRESS */ int lzo1x_1_compress(const unsigned char *src, size_t src_len, - unsigned char *dst, size_t *dst_len, void *wrkmem); + unsigned char *dst, size_t *dst_len, void *wrkmem); /* safe decompression with overrun testing */ int lzo1x_decompress_safe(const unsigned char *src, size_t src_len, - unsigned char *dst, size_t *dst_len); + unsigned char *dst, size_t *dst_len); /* * Return values (< 0 = Error) @@ -40,5 +40,6 @@ int lzo1x_decompress_safe(const unsigned char *src, size_t src_len, #define LZO_E_EOF_NOT_FOUND (-7) #define LZO_E_INPUT_NOT_CONSUMED (-8) #define LZO_E_NOT_YET_IMPLEMENTED (-9) +#define LZO_E_INVALID_ARGUMENT (-10) #endif -- cgit v1.2.3 From 52608ba20546139dc76cca8a46c1d901455d5450 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Niklas=20S=C3=B6derlund?= Date: Wed, 8 Aug 2012 12:30:56 -0300 Subject: i5100_edac: probe for device 19 function 0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Probe and store the device handle for the device 19 function 0 during driver initialization. The device is used during fault injection. Signed-off-by: Niklas Söderlund Signed-off-by: Mauro Carvalho Chehab --- include/linux/pci_ids.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 0eb65796bcb9..d0d1e801e350 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2776,6 +2776,7 @@ #define PCI_DEVICE_ID_INTEL_JAKETOWN_UBOX 0x3ce0 #define PCI_DEVICE_ID_INTEL_IOAT_SNB 0x402f #define PCI_DEVICE_ID_INTEL_5100_16 0x65f0 +#define PCI_DEVICE_ID_INTEL_5100_19 0x65f3 #define PCI_DEVICE_ID_INTEL_5100_21 0x65f5 #define PCI_DEVICE_ID_INTEL_5100_22 0x65f6 #define PCI_DEVICE_ID_INTEL_5400_ERR 0x4030 -- cgit v1.2.3 From c66b5a79a9348ccd6d1cd81416027d0e12da965d Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 15 Feb 2013 07:21:08 -0300 Subject: edac: add a new memory layer type There are some cases where the memory controller layout is completely hidden. This is the case of firmware-driven error code, like the one provided by GHES. Add a new layer to be used on such memory error report mechanisms. Signed-off-by: Mauro Carvalho Chehab --- include/linux/edac.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/edac.h b/include/linux/edac.h index 4784213c819d..1b7744c219b8 100644 --- a/include/linux/edac.h +++ b/include/linux/edac.h @@ -375,6 +375,9 @@ enum scrub_type { * @EDAC_MC_LAYER_CHANNEL: memory layer is named "channel" * @EDAC_MC_LAYER_SLOT: memory layer is named "slot" * @EDAC_MC_LAYER_CHIP_SELECT: memory layer is named "chip select" + * @EDAC_MC_LAYER_ALL_MEM: memory layout is unknown. All memory is mapped + * as a single memory area. This is used when + * retrieving errors from a firmware driven driver. * * This enum is used by the drivers to tell edac_mc_sysfs what name should * be used when describing a memory stick location. @@ -384,6 +387,7 @@ enum edac_mc_layer_type { EDAC_MC_LAYER_CHANNEL, EDAC_MC_LAYER_SLOT, EDAC_MC_LAYER_CHIP_SELECT, + EDAC_MC_LAYER_ALL_MEM, }; /** -- cgit v1.2.3 From c2c93dbc97622e26dc19edc71e50ebaa996d7804 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 19 Feb 2013 06:50:05 -0300 Subject: edac: remove proc_name from mci structure proc_name isn't used anywhere. Remove it. Signed-off-by: Mauro Carvalho Chehab --- include/linux/edac.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/edac.h b/include/linux/edac.h index 1b7744c219b8..ff18efc754f3 100644 --- a/include/linux/edac.h +++ b/include/linux/edac.h @@ -48,7 +48,6 @@ static inline void opstate_init(void) } #define EDAC_MC_LABEL_LEN 31 -#define MC_PROC_NAME_MAX_LEN 7 /** * enum dev_type - describe the type of memory DRAM chips used at the stick @@ -633,7 +632,6 @@ struct mem_ctl_info { const char *mod_ver; const char *ctl_name; const char *dev_name; - char proc_name[MC_PROC_NAME_MAX_LEN + 1]; void *pvt_info; unsigned long start_time; /* mci load start time (in jiffies) */ -- cgit v1.2.3 From cf1c4a094f46ace5bf00078e2db73491ddf018fe Mon Sep 17 00:00:00 2001 From: Josh Hunt Date: Tue, 19 Feb 2013 11:35:59 -0800 Subject: netfilter: ipset: timeout values corrupted on set resize If a resize is triggered on a set with timeouts enabled, the timeout values will get corrupted when copying them to the new set. This occured b/c the wrong timeout value is supplied to type_pf_elem_tadd(). This also adds simple debug statement similar to the one in type_pf_resize(). Signed-off-by: Josh Hunt Signed-off-by: Jozsef Kadlecsik --- include/linux/netfilter/ipset/ip_set_ahash.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/netfilter/ipset/ip_set_ahash.h b/include/linux/netfilter/ipset/ip_set_ahash.h index ef9acd3c8450..01d25e6fc792 100644 --- a/include/linux/netfilter/ipset/ip_set_ahash.h +++ b/include/linux/netfilter/ipset/ip_set_ahash.h @@ -854,6 +854,8 @@ type_pf_tresize(struct ip_set *set, bool retried) retry: ret = 0; htable_bits++; + pr_debug("attempt to resize set %s from %u to %u, t %p\n", + set->name, orig->htable_bits, htable_bits, orig); if (!htable_bits) { /* In case we have plenty of memory :-) */ pr_warning("Cannot increase the hashsize of set %s further\n", @@ -873,7 +875,7 @@ retry: data = ahash_tdata(n, j); m = hbucket(t, HKEY(data, h->initval, htable_bits)); ret = type_pf_elem_tadd(m, data, AHASH_MAX(h), 0, - type_pf_data_timeout(data)); + ip_set_timeout_get(type_pf_data_timeout(data))); if (ret < 0) { read_unlock_bh(&set->lock); ahash_destroy(t); -- cgit v1.2.3 From c7ef7645544131b0750478d1cf94cdfa945c809d Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 21 Feb 2013 13:36:45 -0300 Subject: edac: reduce stack pressure by using a pre-allocated buffer The number of variables at the stack is too big. Reduces the stack usage by using a pre-allocated error buffer. Signed-off-by: Mauro Carvalho Chehab --- include/linux/edac.h | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) (limited to 'include/linux') diff --git a/include/linux/edac.h b/include/linux/edac.h index ff18efc754f3..096b7fcdf484 100644 --- a/include/linux/edac.h +++ b/include/linux/edac.h @@ -47,8 +47,18 @@ static inline void opstate_init(void) return; } +/* Max length of a DIMM label*/ #define EDAC_MC_LABEL_LEN 31 +/* Maximum size of the location string */ +#define LOCATION_SIZE 80 + +/* Defines the maximum number of labels that can be reported */ +#define EDAC_MAX_LABELS 8 + +/* String used to join two or more labels */ +#define OTHER_LABEL " or " + /** * enum dev_type - describe the type of memory DRAM chips used at the stick * @DEV_UNKNOWN: Can't be determined, or MC doesn't support detect it @@ -553,6 +563,46 @@ struct errcount_attribute_data { int layer0, layer1, layer2; }; +/** + * edac_raw_error_desc - Raw error report structure + * @grain: minimum granularity for an error report, in bytes + * @error_count: number of errors of the same type + * @top_layer: top layer of the error (layer[0]) + * @mid_layer: middle layer of the error (layer[1]) + * @low_layer: low layer of the error (layer[2]) + * @page_frame_number: page where the error happened + * @offset_in_page: page offset + * @syndrome: syndrome of the error (or 0 if unknown or if + * the syndrome is not applicable) + * @msg: error message + * @location: location of the error + * @label: label of the affected DIMM(s) + * @other_detail: other driver-specific detail about the error + * @enable_per_layer_report: if false, the error affects all layers + * (typically, a memory controller error) + */ +struct edac_raw_error_desc { + /* + * NOTE: everything before grain won't be cleaned by + * edac_raw_error_desc_clean() + */ + char location[LOCATION_SIZE]; + char label[(EDAC_MC_LABEL_LEN + 1 + sizeof(OTHER_LABEL)) * EDAC_MAX_LABELS]; + long grain; + + /* the vars below and grain will be cleaned on every new error report */ + u16 error_count; + int top_layer; + int mid_layer; + int low_layer; + unsigned long page_frame_number; + unsigned long offset_in_page; + unsigned long syndrome; + const char *msg; + const char *other_detail; + bool enable_per_layer_report; +}; + /* MEMORY controller information structure */ struct mem_ctl_info { @@ -660,6 +710,12 @@ struct mem_ctl_info { /* work struct for this MC */ struct delayed_work work; + /* + * Used to report an error - by being at the global struct + * makes the memory allocated by the EDAC core + */ + struct edac_raw_error_desc error_desc; + /* the internal state of this controller instance */ int op_state; -- cgit v1.2.3 From 8dd93d450bff251575c56b8f058393124e1f00fb Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 19 Feb 2013 21:26:22 -0300 Subject: edac: add support for error type "Info" The CPER spec defines a forth type of error: informational logs. Add support for it at the edac API and at the trace event interface. Signed-off-by: Mauro Carvalho Chehab --- include/linux/edac.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include/linux') diff --git a/include/linux/edac.h b/include/linux/edac.h index 096b7fcdf484..4fd4999ccb5b 100644 --- a/include/linux/edac.h +++ b/include/linux/edac.h @@ -109,8 +109,24 @@ enum hw_event_mc_err_type { HW_EVENT_ERR_CORRECTED, HW_EVENT_ERR_UNCORRECTED, HW_EVENT_ERR_FATAL, + HW_EVENT_ERR_INFO, }; +static inline char *mc_event_error_type(const unsigned int err_type) +{ + switch (err_type) { + case HW_EVENT_ERR_CORRECTED: + return "Corrected"; + case HW_EVENT_ERR_UNCORRECTED: + return "Uncorrected"; + case HW_EVENT_ERR_FATAL: + return "Fatal"; + default: + case HW_EVENT_ERR_INFO: + return "Info"; + } +} + /** * enum mem_type - memory types. For a more detailed reference, please see * http://en.wikipedia.org/wiki/DRAM -- cgit v1.2.3 From aee38fadd25989c3e6d99fc08752e2d87601ffc1 Mon Sep 17 00:00:00 2001 From: Shani Michaeli Date: Wed, 6 Feb 2013 16:19:07 +0000 Subject: IB/mlx4_ib: Remove local invalidate segment unused fields Remove unused fields from the local invalidate WQE segment structure. Signed-off-by: Haggai Eran Signed-off-by: Shani Michaeli Signed-off-by: Or Gerlitz Signed-off-by: Roland Dreier --- include/linux/mlx4/qp.h | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mlx4/qp.h b/include/linux/mlx4/qp.h index 4b4ad6ffef92..6c8a68c602be 100644 --- a/include/linux/mlx4/qp.h +++ b/include/linux/mlx4/qp.h @@ -304,12 +304,10 @@ struct mlx4_wqe_fmr_ext_seg { }; struct mlx4_wqe_local_inval_seg { - __be32 flags; - u32 reserved1; + u64 reserved1; __be32 mem_key; - u32 reserved2[2]; - __be32 guest_id; - __be64 pa; + u32 reserved2; + u64 reserved3[2]; }; struct mlx4_wqe_raddr_seg { -- cgit v1.2.3 From 61083720702a329ed5952e32bda384e3bbc9093c Mon Sep 17 00:00:00 2001 From: Shani Michaeli Date: Wed, 6 Feb 2013 16:19:09 +0000 Subject: mlx4_core: Propagate MR deregistration failures to caller MR deregistration fails when memory windows are bound to the MR. Handle such failures by propagating them to the caller ULP. Signed-off-by: Haggai Eran Signed-off-by: Shani Michaeli Signed-off-by: Or Gerlitz Signed-off-by: Roland Dreier --- include/linux/mlx4/device.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index 20ea939c22a6..e9fe8caaf8bb 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -801,7 +801,7 @@ u64 mlx4_mtt_addr(struct mlx4_dev *dev, struct mlx4_mtt *mtt); int mlx4_mr_alloc(struct mlx4_dev *dev, u32 pd, u64 iova, u64 size, u32 access, int npages, int page_shift, struct mlx4_mr *mr); -void mlx4_mr_free(struct mlx4_dev *dev, struct mlx4_mr *mr); +int mlx4_mr_free(struct mlx4_dev *dev, struct mlx4_mr *mr); int mlx4_mr_enable(struct mlx4_dev *dev, struct mlx4_mr *mr); int mlx4_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt, int start_index, int npages, u64 *page_list); -- cgit v1.2.3 From 4d4c4e24cf48400a24d33feffc7cca4f4e8cabe1 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Fri, 22 Feb 2013 00:05:07 +0100 Subject: irq: Remove IRQ_EXIT_OFFSET workaround The IRQ_EXIT_OFFSET trick was used to make sure the irq doesn't get preempted after we substract the HARDIRQ_OFFSET until we are entirely done with any code in irq_exit(). This workaround was necessary because some archs may call irq_exit() with irqs enabled and there is still some code in the end of this function that is not covered by the HARDIRQ_OFFSET but want to stay non-preemptible. Now that irq are always disabled in irq_exit(), the whole code is guaranteed not to be preempted. We can thus remove this hack. Signed-off-by: Frederic Weisbecker Cc: Linus Torvalds Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Paul E. McKenney --- include/linux/hardirq.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hardirq.h b/include/linux/hardirq.h index 29eb805ea4a6..c1d6555d2567 100644 --- a/include/linux/hardirq.h +++ b/include/linux/hardirq.h @@ -118,10 +118,8 @@ #ifdef CONFIG_PREEMPT_COUNT # define preemptible() (preempt_count() == 0 && !irqs_disabled()) -# define IRQ_EXIT_OFFSET (HARDIRQ_OFFSET-1) #else # define preemptible() 0 -# define IRQ_EXIT_OFFSET HARDIRQ_OFFSET #endif #if defined(CONFIG_SMP) || defined(CONFIG_GENERIC_HARDIRQS) -- cgit v1.2.3 From 6640dfdf6fff387c0a8f7fb8ac1d47c6b093484e Mon Sep 17 00:00:00 2001 From: Daniel Santos Date: Thu, 21 Feb 2013 16:41:32 -0800 Subject: compiler-gcc4.h: Reorder macros based upon gcc ver This helps to keep the file from getting confusing, removes one duplicate version check and should encourage future editors to put new macros where they belong. Signed-off-by: Daniel Santos Acked-by: David Rientjes Acked-by: Borislav Petkov Cc: Andi Kleen Cc: Joe Perches Cc: Josh Triplett Cc: Paul Gortmaker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/compiler-gcc4.h | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h index 662fd1b4c42a..c9785c22744e 100644 --- a/include/linux/compiler-gcc4.h +++ b/include/linux/compiler-gcc4.h @@ -13,6 +13,10 @@ #define __must_check __attribute__((warn_unused_result)) #define __compiler_offsetof(a,b) __builtin_offsetof(a,b) +#if __GNUC_MINOR__ > 0 +# define __compiletime_object_size(obj) __builtin_object_size(obj, 0) +#endif + #if __GNUC_MINOR__ >= 3 /* Mark functions as cold. gcc will assume any path leading to a call to them will be unlikely. This means a lot of manual unlikely()s @@ -33,6 +37,12 @@ #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) +#ifndef __CHECKER__ +# define __compiletime_warning(message) __attribute__((warning(message))) +# define __compiletime_error(message) __attribute__((error(message))) +#endif /* __CHECKER__ */ +#endif /* __GNUC_MINOR__ >= 3 */ + #if __GNUC_MINOR__ >= 5 /* * Mark a position in code as unreachable. This can be used to @@ -48,8 +58,7 @@ /* Mark a function definition as prohibited from being cloned. */ #define __noclone __attribute__((__noclone__)) -#endif -#endif +#endif /* __GNUC_MINOR__ >= 5 */ #if __GNUC_MINOR__ >= 6 /* @@ -58,13 +67,6 @@ #define __visible __attribute__((externally_visible)) #endif -#if __GNUC_MINOR__ > 0 -#define __compiletime_object_size(obj) __builtin_object_size(obj, 0) -#endif -#if __GNUC_MINOR__ >= 3 && !defined(__CHECKER__) -#define __compiletime_warning(message) __attribute__((warning(message))) -#define __compiletime_error(message) __attribute__((error(message))) -#endif #ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP #if __GNUC_MINOR__ >= 4 -- cgit v1.2.3 From 3f3f8d2f48acfd8ed3b8e6b7377935da57b27b16 Mon Sep 17 00:00:00 2001 From: Daniel Santos Date: Thu, 21 Feb 2013 16:41:39 -0800 Subject: compiler-gcc.h: Add gcc-recommended GCC_VERSION macro Throughout compiler*.h, many version checks are made. These can be simplified by using the macro that gcc's documentation recommends. However, my primary reason for adding this is that I need bug-check macros that are enabled at certain gcc versions and it's cleaner to use this macro than the tradition method: #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ => 2) If you add patch level, it gets this ugly: #if __GNUC__ > 4 || (__GNUC__ == 4 && (__GNUC_MINOR__ > 2 || \ __GNUC_MINOR__ == 2 __GNUC_PATCHLEVEL__ >= 1)) As opposed to: #if GCC_VERSION >= 40201 While having separate headers for gcc 3 & 4 eliminates some of this verbosity, they can still be cleaned up by this. See also: http://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html Signed-off-by: Daniel Santos Acked-by: Borislav Petkov Acked-by: David Rientjes Cc: Andi Kleen Cc: Joe Perches Cc: Josh Triplett Cc: Paul Gortmaker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/compiler-gcc.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index 6a6d7aefe12d..24545cd90a25 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -5,6 +5,9 @@ /* * Common definitions for all gcc versions go here. */ +#define GCC_VERSION (__GNUC__ * 10000 \ + + __GNUC_MINOR__ * 100 \ + + __GNUC_PATCHLEVEL__) /* Optimization barrier */ -- cgit v1.2.3 From 733ed6e43756b0aec25c9429b810ba74e24c980c Mon Sep 17 00:00:00 2001 From: Daniel Santos Date: Thu, 21 Feb 2013 16:41:41 -0800 Subject: compiler-gcc{3,4}.h: Use GCC_VERSION macro Using GCC_VERSION reduces complexity, is easier to read and is GCC's recommended mechanism for doing version checks. (Just don't ask me why they didn't define it in the first place.) This also makes it easy to merge compiler-gcc{,3,4}.h should somebody want to. Signed-off-by: Daniel Santos Acked-by: David Rientjes Acked-by: Borislav Petkov Cc: Andi Kleen Cc: Joe Perches Cc: Josh Triplett Cc: Paul Gortmaker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/compiler-gcc3.h | 8 ++++---- include/linux/compiler-gcc4.h | 20 ++++++++++---------- 2 files changed, 14 insertions(+), 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/compiler-gcc3.h b/include/linux/compiler-gcc3.h index 37d412436d0f..7d89febe4d79 100644 --- a/include/linux/compiler-gcc3.h +++ b/include/linux/compiler-gcc3.h @@ -2,22 +2,22 @@ #error "Please don't include directly, include instead." #endif -#if __GNUC_MINOR__ < 2 +#if GCC_VERSION < 30200 # error Sorry, your compiler is too old - please upgrade it. #endif -#if __GNUC_MINOR__ >= 3 +#if GCC_VERSION >= 30300 # define __used __attribute__((__used__)) #else # define __used __attribute__((__unused__)) #endif -#if __GNUC_MINOR__ >= 4 +#if GCC_VERSION >= 30400 #define __must_check __attribute__((warn_unused_result)) #endif #ifdef CONFIG_GCOV_KERNEL -# if __GNUC_MINOR__ < 4 +# if GCC_VERSION < 30400 # error "GCOV profiling support for gcc versions below 3.4 not included" # endif /* __GNUC_MINOR__ */ #endif /* CONFIG_GCOV_KERNEL */ diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h index c9785c22744e..a9ffdfe7713c 100644 --- a/include/linux/compiler-gcc4.h +++ b/include/linux/compiler-gcc4.h @@ -4,7 +4,7 @@ /* GCC 4.1.[01] miscompiles __weak */ #ifdef __KERNEL__ -# if __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ <= 1 +# if GCC_VERSION >= 40100 && GCC_VERSION <= 40101 # error Your version of gcc miscompiles the __weak directive # endif #endif @@ -13,11 +13,11 @@ #define __must_check __attribute__((warn_unused_result)) #define __compiler_offsetof(a,b) __builtin_offsetof(a,b) -#if __GNUC_MINOR__ > 0 +#if GCC_VERSION >= 40100 # define __compiletime_object_size(obj) __builtin_object_size(obj, 0) #endif -#if __GNUC_MINOR__ >= 3 +#if GCC_VERSION >= 40300 /* Mark functions as cold. gcc will assume any path leading to a call to them will be unlikely. This means a lot of manual unlikely()s are unnecessary now for any paths leading to the usual suspects @@ -41,9 +41,9 @@ # define __compiletime_warning(message) __attribute__((warning(message))) # define __compiletime_error(message) __attribute__((error(message))) #endif /* __CHECKER__ */ -#endif /* __GNUC_MINOR__ >= 3 */ +#endif /* GCC_VERSION >= 40300 */ -#if __GNUC_MINOR__ >= 5 +#if GCC_VERSION >= 40500 /* * Mark a position in code as unreachable. This can be used to * suppress control flow warnings after asm blocks that transfer @@ -58,9 +58,9 @@ /* Mark a function definition as prohibited from being cloned. */ #define __noclone __attribute__((__noclone__)) -#endif /* __GNUC_MINOR__ >= 5 */ +#endif /* GCC_VERSION >= 40500 */ -#if __GNUC_MINOR__ >= 6 +#if GCC_VERSION >= 40600 /* * Tell the optimizer that something else uses this function or variable. */ @@ -69,11 +69,11 @@ #ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP -#if __GNUC_MINOR__ >= 4 +#if GCC_VERSION >= 40400 #define __HAVE_BUILTIN_BSWAP32__ #define __HAVE_BUILTIN_BSWAP64__ #endif -#if __GNUC_MINOR__ >= 8 || (defined(__powerpc__) && __GNUC_MINOR__ >= 6) +#if GCC_VERSION >= 40800 || (defined(__powerpc__) && GCC_VERSION >= 40600) #define __HAVE_BUILTIN_BSWAP16__ #endif -#endif +#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */ -- cgit v1.2.3 From 6ae8d04871f84d853673e9e9f3f713e77a2fe145 Mon Sep 17 00:00:00 2001 From: Daniel Santos Date: Thu, 21 Feb 2013 16:41:42 -0800 Subject: compiler{,-gcc4}.h, bug.h: Remove duplicate macros __linktime_error() does the same thing as __compiletime_error() and is only used in bug.h. Since the macro defines a function attribute that will cause a failure at compile-time (not link-time), it makes more sense to keep __compiletime_error(), which is also neatly mated with __compiletime_warning(). Signed-off-by: Daniel Santos Acked-by: David Rientjes Acked-by: Borislav Petkov Cc: Andi Kleen Cc: Joe Perches Cc: Josh Triplett Cc: Paul Gortmaker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/bug.h | 2 +- include/linux/compiler-gcc4.h | 2 -- include/linux/compiler.h | 3 --- 3 files changed, 1 insertion(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/bug.h b/include/linux/bug.h index b1cf40de847e..2a11774c5e64 100644 --- a/include/linux/bug.h +++ b/include/linux/bug.h @@ -74,7 +74,7 @@ extern int __build_bug_on_failed; #define BUILD_BUG() \ do { \ extern void __build_bug_failed(void) \ - __linktime_error("BUILD_BUG failed"); \ + __compiletime_error("BUILD_BUG failed");\ __build_bug_failed(); \ } while (0) diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h index a9ffdfe7713c..68b162d92254 100644 --- a/include/linux/compiler-gcc4.h +++ b/include/linux/compiler-gcc4.h @@ -33,8 +33,6 @@ the kernel context */ #define __cold __attribute__((__cold__)) -#define __linktime_error(message) __attribute__((__error__(message))) - #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) #ifndef __CHECKER__ diff --git a/include/linux/compiler.h b/include/linux/compiler.h index dd852b73b286..4c638be76093 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -308,9 +308,6 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect); #ifndef __compiletime_error # define __compiletime_error(message) #endif -#ifndef __linktime_error -# define __linktime_error(message) -#endif /* * Prevent the compiler from merging or refetching accesses. The compiler * is also forbidden from reordering successive instances of ACCESS_ONCE(), -- cgit v1.2.3 From ca623c914e82c3351cd657073fdb24a1df8c27b9 Mon Sep 17 00:00:00 2001 From: Daniel Santos Date: Thu, 21 Feb 2013 16:41:44 -0800 Subject: bug.h: fix BUILD_BUG_ON macro in __CHECKER__ When __CHECKER__ is defined, we disable all of the BUILD_BUG.* macros. However, both BUILD_BUG_ON_NOT_POWER_OF_2 and BUILD_BUG_ON was evaluating to nothing in this case, and we want (0) since this is a function-like macro that will be followed by a semicolon. Signed-off-by: Daniel Santos Acked-by: Borislav Petkov Cc: Andi Kleen Cc: David Rientjes Cc: Joe Perches Cc: Josh Triplett Cc: Paul Gortmaker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/bug.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/bug.h b/include/linux/bug.h index 2a11774c5e64..27d404f91b3e 100644 --- a/include/linux/bug.h +++ b/include/linux/bug.h @@ -12,11 +12,11 @@ enum bug_trap_type { struct pt_regs; #ifdef __CHECKER__ -#define BUILD_BUG_ON_NOT_POWER_OF_2(n) +#define BUILD_BUG_ON_NOT_POWER_OF_2(n) (0) #define BUILD_BUG_ON_ZERO(e) (0) #define BUILD_BUG_ON_NULL(e) ((void*)0) #define BUILD_BUG_ON_INVALID(e) (0) -#define BUILD_BUG_ON(condition) +#define BUILD_BUG_ON(condition) (0) #define BUILD_BUG() (0) #else /* __CHECKER__ */ -- cgit v1.2.3 From 1d6a0d19c85587581a364850b77f30446810a560 Mon Sep 17 00:00:00 2001 From: Daniel Santos Date: Thu, 21 Feb 2013 16:41:45 -0800 Subject: bug.h: prevent double evaulation of `condition' in BUILD_BUG_ON When calling BUILD_BUG_ON in an optimized build using gcc 4.3 and later, the condition will be evaulated twice, possibily with side-effects. This patch eliminates that error. [akpm@linux-foundation.org: tweak code layout] Signed-off-by: Daniel Santos Cc: Andi Kleen Cc: Borislav Petkov Cc: David Rientjes Cc: Joe Perches Cc: Josh Triplett Cc: Paul Gortmaker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/bug.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/bug.h b/include/linux/bug.h index 27d404f91b3e..89fb91d0c929 100644 --- a/include/linux/bug.h +++ b/include/linux/bug.h @@ -59,9 +59,10 @@ struct pt_regs; extern int __build_bug_on_failed; #define BUILD_BUG_ON(condition) \ do { \ - ((void)sizeof(char[1 - 2*!!(condition)])); \ - if (condition) __build_bug_on_failed = 1; \ - } while(0) + bool __cond = !!(condition); \ + ((void)sizeof(char[1 - 2 * __cond])); \ + if (__cond) __build_bug_on_failed = 1; \ + } while (0) #endif /** -- cgit v1.2.3 From a3ccc497cd17147713363a4bf975f1a269fadb6d Mon Sep 17 00:00:00 2001 From: Daniel Santos Date: Thu, 21 Feb 2013 16:41:52 -0800 Subject: bug.h: make BUILD_BUG_ON generate compile-time error Negative sized arrays wont create a compile-time error in some cases starting with gcc 4.4 (e.g., inlined functions), but gcc 4.3 introduced the error function attribute that will. This patch modifies BUILD_BUG_ON to behave like BUILD_BUG already does, using the error function attribute so that you don't have to build the entire kernel to discover that you have a problem, and then enjoy trying to track it down from a link-time error. Also, we are only including asm/bug.h and then expecting that linux/compiler.h will eventually be included to define __linktime_error (used in BUILD_BUG_ON). This patch includes it directly for clarity and to avoid the possibility of changes in /*/include/asm/bug.h being changed or not including linux/compiler.h for some reason. Signed-off-by: Daniel Santos Acked-by: Borislav Petkov Cc: Andi Kleen Cc: David Rientjes Cc: Joe Perches Cc: Josh Triplett Cc: Paul Gortmaker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/bug.h | 32 +++++++++++++++++++------------- 1 file changed, 19 insertions(+), 13 deletions(-) (limited to 'include/linux') diff --git a/include/linux/bug.h b/include/linux/bug.h index 89fb91d0c929..73af37ca472c 100644 --- a/include/linux/bug.h +++ b/include/linux/bug.h @@ -2,6 +2,7 @@ #define _LINUX_BUG_H #include +#include enum bug_trap_type { BUG_TRAP_TYPE_NONE = 0, @@ -43,25 +44,30 @@ struct pt_regs; * @condition: the condition which the compiler should know is false. * * If you have some code which relies on certain constants being equal, or - * other compile-time-evaluated condition, you should use BUILD_BUG_ON to + * some other compile-time-evaluated condition, you should use BUILD_BUG_ON to * detect if someone changes it. * - * The implementation uses gcc's reluctance to create a negative array, but - * gcc (as of 4.4) only emits that error for obvious cases (eg. not arguments - * to inline functions). So as a fallback we use the optimizer; if it can't - * prove the condition is false, it will cause a link error on the undefined - * "__build_bug_on_failed". This error message can be harder to track down - * though, hence the two different methods. + * The implementation uses gcc's reluctance to create a negative array, but gcc + * (as of 4.4) only emits that error for obvious cases (e.g. not arguments to + * inline functions). Luckily, in 4.3 they added the "error" function + * attribute just for this type of case. Thus, we use a negative sized array + * (should always create an error on gcc versions older than 4.4) and then call + * an undefined function with the error attribute (should always create an + * error on gcc 4.3 and later). If for some reason, neither creates a + * compile-time error, we'll still have a link-time error, which is harder to + * track down. */ #ifndef __OPTIMIZE__ #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) #else -extern int __build_bug_on_failed; -#define BUILD_BUG_ON(condition) \ - do { \ - bool __cond = !!(condition); \ - ((void)sizeof(char[1 - 2 * __cond])); \ - if (__cond) __build_bug_on_failed = 1; \ +#define BUILD_BUG_ON(condition) \ + do { \ + bool __cond = !!(condition); \ + extern void __build_bug_on_failed(void) \ + __compiletime_error("BUILD_BUG_ON failed"); \ + if (__cond) \ + __build_bug_on_failed(); \ + ((void)sizeof(char[1 - 2 * __cond])); \ } while (0) #endif -- cgit v1.2.3 From c361d3e54364d19bb5e803d6e766e94674da7b0e Mon Sep 17 00:00:00 2001 From: Daniel Santos Date: Thu, 21 Feb 2013 16:41:54 -0800 Subject: compiler.h, bug.h: prevent double error messages with BUILD_BUG{,_ON} Prior to the introduction of __attribute__((error("msg"))) in gcc 4.3, creating compile-time errors required a little trickery. BUILD_BUG{,_ON} uses this attribute when available to generate compile-time errors, but also uses the negative-sized array trick for older compilers, resulting in two error messages in some cases. The reason it's "some" cases is that as of gcc 4.4, the negative-sized array will not create an error in some situations, like inline functions. This patch replaces the negative-sized array code with the new __compiletime_error_fallback() macro which expands to the same thing unless the the error attribute is available, in which case it expands to do{}while(0), resulting in exactly one compile-time error on all versions of gcc. Note that we are not changing the negative-sized array code for the unoptimized version of BUILD_BUG_ON, since it has the potential to catch problems that would be disabled in later versions of gcc were __compiletime_error_fallback used. The reason is that that an unoptimized build can't always remove calls to an error-attributed function call (like we are using) that should effectively become dead code if it were optimized. However, using a negative-sized array with a similar value will not result in an false-positive (error). The only caveat being that it will also fail to catch valid conditions, which we should be expecting in an unoptimized build anyway. Signed-off-by: Daniel Santos Cc: Andi Kleen Cc: Borislav Petkov Cc: David Rientjes Cc: Joe Perches Cc: Josh Triplett Cc: Paul Gortmaker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/bug.h | 2 +- include/linux/compiler.h | 5 +++++ 2 files changed, 6 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/bug.h b/include/linux/bug.h index 73af37ca472c..dc11dc762fc3 100644 --- a/include/linux/bug.h +++ b/include/linux/bug.h @@ -67,7 +67,7 @@ struct pt_regs; __compiletime_error("BUILD_BUG_ON failed"); \ if (__cond) \ __build_bug_on_failed(); \ - ((void)sizeof(char[1 - 2 * __cond])); \ + __compiletime_error_fallback(__cond); \ } while (0) #endif diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 4c638be76093..423bb6bd660f 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -307,7 +307,12 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect); #endif #ifndef __compiletime_error # define __compiletime_error(message) +# define __compiletime_error_fallback(condition) \ + do { ((void)sizeof(char[1 - 2*!!(condition)])); } while (0) +#else +# define __compiletime_error_fallback(condition) do { } while (0) #endif + /* * Prevent the compiler from merging or refetching accesses. The compiler * is also forbidden from reordering successive instances of ACCESS_ONCE(), -- cgit v1.2.3 From 9a8ab1c39970a4938a72d94e6fd13be88a797590 Mon Sep 17 00:00:00 2001 From: Daniel Santos Date: Thu, 21 Feb 2013 16:41:55 -0800 Subject: bug.h, compiler.h: introduce compiletime_assert & BUILD_BUG_ON_MSG Introduce compiletime_assert to compiler.h, which moves the details of how to break a build and emit an error message for a specific compiler to the headers where these details should be. Following in the tradition of the POSIX assert macro, compiletime_assert creates a build-time error when the supplied condition is *false*. Next, we add BUILD_BUG_ON_MSG to bug.h which simply wraps compiletime_assert, inverting the logic, so that it fails when the condition is *true*, consistent with the language "build bug on." This macro allows you to specify the error message you want emitted when the supplied condition is true. Finally, we remove all other code from bug.h that mucks with these details (BUILD_BUG & BUILD_BUG_ON), and have them all call BUILD_BUG_ON_MSG. This not only reduces source code bloat, but also prevents the possibility of code being changed for one macro and not for the other (which was previously the case for BUILD_BUG and BUILD_BUG_ON). Since __compiletime_error_fallback is now only used in compiler.h, I'm considering it a private macro and removing the double negation that's now extraneous. [akpm@linux-foundation.org: checkpatch fixes] Signed-off-by: Daniel Santos Cc: Andi Kleen Cc: Borislav Petkov Cc: David Rientjes Cc: Joe Perches Cc: Josh Triplett Cc: Paul Gortmaker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/bug.h | 28 +++++++++++++--------------- include/linux/compiler.h | 26 +++++++++++++++++++++++++- 2 files changed, 38 insertions(+), 16 deletions(-) (limited to 'include/linux') diff --git a/include/linux/bug.h b/include/linux/bug.h index dc11dc762fc3..7f4818673c41 100644 --- a/include/linux/bug.h +++ b/include/linux/bug.h @@ -17,6 +17,7 @@ struct pt_regs; #define BUILD_BUG_ON_ZERO(e) (0) #define BUILD_BUG_ON_NULL(e) ((void*)0) #define BUILD_BUG_ON_INVALID(e) (0) +#define BUILD_BUG_ON_MSG(cond, msg) (0) #define BUILD_BUG_ON(condition) (0) #define BUILD_BUG() (0) #else /* __CHECKER__ */ @@ -39,6 +40,15 @@ struct pt_regs; */ #define BUILD_BUG_ON_INVALID(e) ((void)(sizeof((__force long)(e)))) +/** + * BUILD_BUG_ON_MSG - break compile if a condition is true & emit supplied + * error message. + * @condition: the condition which the compiler should know is false. + * + * See BUILD_BUG_ON for description. + */ +#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) + /** * BUILD_BUG_ON - break compile if a condition is true. * @condition: the condition which the compiler should know is false. @@ -60,15 +70,8 @@ struct pt_regs; #ifndef __OPTIMIZE__ #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) #else -#define BUILD_BUG_ON(condition) \ - do { \ - bool __cond = !!(condition); \ - extern void __build_bug_on_failed(void) \ - __compiletime_error("BUILD_BUG_ON failed"); \ - if (__cond) \ - __build_bug_on_failed(); \ - __compiletime_error_fallback(__cond); \ - } while (0) +#define BUILD_BUG_ON(condition) \ + BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) #endif /** @@ -78,12 +81,7 @@ struct pt_regs; * build time, you should use BUILD_BUG to detect if it is * unexpectedly used. */ -#define BUILD_BUG() \ - do { \ - extern void __build_bug_failed(void) \ - __compiletime_error("BUILD_BUG failed");\ - __build_bug_failed(); \ - } while (0) +#define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed") #endif /* __CHECKER__ */ diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 423bb6bd660f..10b8f23fab0f 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -308,11 +308,35 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect); #ifndef __compiletime_error # define __compiletime_error(message) # define __compiletime_error_fallback(condition) \ - do { ((void)sizeof(char[1 - 2*!!(condition)])); } while (0) + do { ((void)sizeof(char[1 - 2 * condition])); } while (0) #else # define __compiletime_error_fallback(condition) do { } while (0) #endif +#define __compiletime_assert(condition, msg, prefix, suffix) \ + do { \ + bool __cond = !(condition); \ + extern void prefix ## suffix(void) __compiletime_error(msg); \ + if (__cond) \ + prefix ## suffix(); \ + __compiletime_error_fallback(__cond); \ + } while (0) + +#define _compiletime_assert(condition, msg, prefix, suffix) \ + __compiletime_assert(condition, msg, prefix, suffix) + +/** + * compiletime_assert - break build and emit msg if condition is false + * @condition: a compile-time constant condition to check + * @msg: a message to emit if condition is false + * + * In tradition of POSIX assert, this macro will break the build if the + * supplied condition is *false*, emitting the supplied error message if the + * compiler has support to do so. + */ +#define compiletime_assert(condition, msg) \ + _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) + /* * Prevent the compiler from merging or refetching accesses. The compiler * is also forbidden from reordering successive instances of ACCESS_ONCE(), -- cgit v1.2.3 From b1ae345d971664f70cfdc293029c40ccfb093591 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 21 Feb 2013 16:42:47 -0800 Subject: lockdep: make lockdep_assert_held() not have a return value I recently made the mistake of writing: foo = lockdep_dereference_protected(..., lockdep_assert_held(...)); which is clearly bogus. If lockdep is disabled in the config this would cause a compile failure, if it is enabled then it compiles and causes a puzzling warning about dereferencing without the correct protection. Wrap the macro in "do { ... } while (0)" to also fail compile for this when lockdep is enabled. Signed-off-by: Johannes Berg Cc: Peter Zijlstra Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/lockdep.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 2bca44b0893c..bfe88c4aa251 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -359,7 +359,9 @@ extern void lockdep_trace_alloc(gfp_t mask); #define lockdep_depth(tsk) (debug_locks ? (tsk)->lockdep_depth : 0) -#define lockdep_assert_held(l) WARN_ON(debug_locks && !lockdep_is_held(l)) +#define lockdep_assert_held(l) do { \ + WARN_ON(debug_locks && !lockdep_is_held(l)); \ + } while (0) #define lockdep_recursing(tsk) ((tsk)->lockdep_recursion) -- cgit v1.2.3 From 7d311cdab663f4f7ab3a4c0d5d484234406f8268 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Thu, 21 Feb 2013 16:42:48 -0800 Subject: bdi: allow block devices to say that they require stable page writes This patchset ("stable page writes, part 2") makes some key modifications to the original 'stable page writes' patchset. First, it provides creators (devices and filesystems) of a backing_dev_info a flag that declares whether or not it is necessary to ensure that page contents cannot change during writeout. It is no longer assumed that this is true of all devices (which was never true anyway). Second, the flag is used to relaxed the wait_on_page_writeback calls so that wait only occurs if the device needs it. Third, it fixes up the remaining disk-backed filesystems to use this improved conditional-wait logic to provide stable page writes on those filesystems. It is hoped that (for people not using checksumming devices, anyway) this patchset will give back unnecessary performance decreases since the original stable page write patchset went into 3.0. Sorry about not fixing it sooner. Complaints were registered by several people about the long write latencies introduced by the original stable page write patchset. Generally speaking, the kernel ought to allocate as little extra memory as possible to facilitate writeout, but for people who simply cannot wait, a second page stability strategy is (re)introduced: snapshotting page contents. The waiting behavior is still the default strategy; to enable page snapshotting, a superblock flag (MS_SNAP_STABLE) must be set. This flag is used to bandaid^Henable stable page writeback on ext3[1], and is not used anywhere else. Given that there are already a few storage devices and network FSes that have rolled their own page stability wait/page snapshot code, it would be nice to move towards consolidating all of these. It seems possible that iscsi and raid5 may wish to use the new stable page write support to enable zero-copy writeout. Thank you to Jan Kara for helping fix a couple more filesystems. Per Andrew Morton's request, here are the result of using dbench to measure latencies on ext2: 3.8.0-rc3: Operation Count AvgLat MaxLat ---------------------------------------- WriteX 109347 0.028 59.817 ReadX 347180 0.004 3.391 Flush 15514 29.828 287.283 Throughput 57.429 MB/sec 4 clients 4 procs max_latency=287.290 ms 3.8.0-rc3 + patches: WriteX 105556 0.029 4.273 ReadX 335004 0.005 4.112 Flush 14982 30.540 298.634 Throughput 55.4496 MB/sec 4 clients 4 procs max_latency=298.650 ms As you can see, for ext2 the maximum write latency decreases from ~60ms on a laptop hard disk to ~4ms. I'm not sure why the flush latencies increase, though I suspect that being able to dirty pages faster gives the flusher more work to do. On ext4, the average write latency decreases as well as all the maximum latencies: 3.8.0-rc3: WriteX 85624 0.152 33.078 ReadX 272090 0.010 61.210 Flush 12129 36.219 168.260 Throughput 44.8618 MB/sec 4 clients 4 procs max_latency=168.276 ms 3.8.0-rc3 + patches: WriteX 86082 0.141 30.928 ReadX 273358 0.010 36.124 Flush 12214 34.800 165.689 Throughput 44.9941 MB/sec 4 clients 4 procs max_latency=165.722 ms XFS seems to exhibit similar latency improvements as ext2: 3.8.0-rc3: WriteX 125739 0.028 104.343 ReadX 399070 0.005 4.115 Flush 17851 25.004 131.390 Throughput 66.0024 MB/sec 4 clients 4 procs max_latency=131.406 ms 3.8.0-rc3 + patches: WriteX 123529 0.028 6.299 ReadX 392434 0.005 4.287 Flush 17549 25.120 188.687 Throughput 64.9113 MB/sec 4 clients 4 procs max_latency=188.704 ms ...and btrfs, just to round things out, also shows some latency decreases: 3.8.0-rc3: WriteX 67122 0.083 82.355 ReadX 212719 0.005 2.828 Flush 9547 47.561 147.418 Throughput 35.3391 MB/sec 4 clients 4 procs max_latency=147.433 ms 3.8.0-rc3 + patches: WriteX 64898 0.101 71.631 ReadX 206673 0.005 7.123 Flush 9190 47.963 219.034 Throughput 34.0795 MB/sec 4 clients 4 procs max_latency=219.044 ms Before this patchset, all filesystems would block, regardless of whether or not it was necessary. ext3 would wait, but still generate occasional checksum errors. The network filesystems were left to do their own thing, so they'd wait too. After this patchset, all the disk filesystems except ext3 and btrfs will wait only if the hardware requires it. ext3 (if necessary) snapshots pages instead of blocking, and btrfs provides its own bdi so the mm will never wait. Network filesystems haven't been touched, so either they provide their own wait code, or they don't block at all. The blocking behavior is back to what it was before 3.0 if you don't have a disk requiring stable page writes. This patchset has been tested on 3.8.0-rc3 on x64 with ext3, ext4, and xfs. I've spot-checked 3.8.0-rc4 and seem to be getting the same results as -rc3. [1] The alternative fixes to ext3 include fixing the locking order and page bit handling like we did for ext4 (but then why not just use ext4?), or setting PG_writeback so early that ext3 becomes extremely slow. I tried that, but the number of write()s I could initiate dropped by nearly an order of magnitude. That was a bit much even for the author of the stable page series! :) This patch: Creates a per-backing-device flag that tracks whether or not pages must be held immutable during writeout. Eventually it will be used to waive wait_for_page_writeback() if nothing requires stable pages. Signed-off-by: Darrick J. Wong Reviewed-by: Jan Kara Cc: Adrian Hunter Cc: Andy Lutomirski Cc: Artem Bityutskiy Cc: Joel Becker Cc: Mark Fasheh Cc: Steven Whitehouse Cc: Jens Axboe Cc: Eric Van Hensbergen Cc: Ron Minnich Cc: Latchesar Ionkov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/backing-dev.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 12731a19ef06..350459910fe1 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -254,6 +254,7 @@ int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio); #define BDI_CAP_EXEC_MAP 0x00000040 #define BDI_CAP_NO_ACCT_WB 0x00000080 #define BDI_CAP_SWAP_BACKED 0x00000100 +#define BDI_CAP_STABLE_WRITES 0x00000200 #define BDI_CAP_VMFLAGS \ (BDI_CAP_READ_MAP | BDI_CAP_WRITE_MAP | BDI_CAP_EXEC_MAP) @@ -308,6 +309,11 @@ long wait_iff_congested(struct zone *zone, int sync, long timeout); int pdflush_proc_obsolete(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos); +static inline bool bdi_cap_stable_pages_required(struct backing_dev_info *bdi) +{ + return bdi->capabilities & BDI_CAP_STABLE_WRITES; +} + static inline bool bdi_cap_writeback_dirty(struct backing_dev_info *bdi) { return !(bdi->capabilities & BDI_CAP_NO_WRITEBACK); -- cgit v1.2.3 From 1d1d1a767206fbe5d4c69493b7e6d2a8d08cc0a0 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Thu, 21 Feb 2013 16:42:51 -0800 Subject: mm: only enforce stable page writes if the backing device requires it Create a helper function to check if a backing device requires stable page writes and, if so, performs the necessary wait. Then, make it so that all points in the memory manager that handle making pages writable use the helper function. This should provide stable page write support to most filesystems, while eliminating unnecessary waiting for devices that don't require the feature. Before this patchset, all filesystems would block, regardless of whether or not it was necessary. ext3 would wait, but still generate occasional checksum errors. The network filesystems were left to do their own thing, so they'd wait too. After this patchset, all the disk filesystems except ext3 and btrfs will wait only if the hardware requires it. ext3 (if necessary) snapshots pages instead of blocking, and btrfs provides its own bdi so the mm will never wait. Network filesystems haven't been touched, so either they provide their own stable page guarantees or they don't block at all. The blocking behavior is back to what it was before 3.0 if you don't have a disk requiring stable page writes. Here's the result of using dbench to test latency on ext2: 3.8.0-rc3: Operation Count AvgLat MaxLat ---------------------------------------- WriteX 109347 0.028 59.817 ReadX 347180 0.004 3.391 Flush 15514 29.828 287.283 Throughput 57.429 MB/sec 4 clients 4 procs max_latency=287.290 ms 3.8.0-rc3 + patches: WriteX 105556 0.029 4.273 ReadX 335004 0.005 4.112 Flush 14982 30.540 298.634 Throughput 55.4496 MB/sec 4 clients 4 procs max_latency=298.650 ms As you can see, the maximum write latency drops considerably with this patch enabled. The other filesystems (ext3/ext4/xfs/btrfs) behave similarly, but see the cover letter for those results. Signed-off-by: Darrick J. Wong Acked-by: Steven Whitehouse Reviewed-by: Jan Kara Cc: Adrian Hunter Cc: Andy Lutomirski Cc: Artem Bityutskiy Cc: Joel Becker Cc: Mark Fasheh Cc: Jens Axboe Cc: Eric Van Hensbergen Cc: Ron Minnich Cc: Latchesar Ionkov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pagemap.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 6da609d14c15..0e38e13eb249 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -414,6 +414,7 @@ static inline void wait_on_page_writeback(struct page *page) } extern void end_page_writeback(struct page *page); +void wait_for_stable_page(struct page *page); /* * Add an arbitrary waiter to a page's wait queue -- cgit v1.2.3 From 9a46ad6d6df3b547d057c39db13f69d7170a99e9 Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Thu, 21 Feb 2013 16:43:03 -0800 Subject: smp: make smp_call_function_many() use logic similar to smp_call_function_single() I'm testing swapout workload in a two-socket Xeon machine. The workload has 10 threads, each thread sequentially accesses separate memory region. TLB flush overhead is very big in the workload. For each page, page reclaim need move it from active lru list and then unmap it. Both need a TLB flush. And this is a multthread workload, TLB flush happens in 10 CPUs. In X86, TLB flush uses generic smp_call)function. So this workload stress smp_call_function_many heavily. Without patch, perf shows: + 24.49% [k] generic_smp_call_function_interrupt - 21.72% [k] _raw_spin_lock - _raw_spin_lock + 79.80% __page_check_address + 6.42% generic_smp_call_function_interrupt + 3.31% get_swap_page + 2.37% free_pcppages_bulk + 1.75% handle_pte_fault + 1.54% put_super + 1.41% grab_super_passive + 1.36% __swap_duplicate + 0.68% blk_flush_plug_list + 0.62% swap_info_get + 6.55% [k] flush_tlb_func + 6.46% [k] smp_call_function_many + 5.09% [k] call_function_interrupt + 4.75% [k] default_send_IPI_mask_sequence_phys + 2.18% [k] find_next_bit swapout throughput is around 1300M/s. With the patch, perf shows: - 27.23% [k] _raw_spin_lock - _raw_spin_lock + 80.53% __page_check_address + 8.39% generic_smp_call_function_single_interrupt + 2.44% get_swap_page + 1.76% free_pcppages_bulk + 1.40% handle_pte_fault + 1.15% __swap_duplicate + 1.05% put_super + 0.98% grab_super_passive + 0.86% blk_flush_plug_list + 0.57% swap_info_get + 8.25% [k] default_send_IPI_mask_sequence_phys + 7.55% [k] call_function_interrupt + 7.47% [k] smp_call_function_many + 7.25% [k] flush_tlb_func + 3.81% [k] _raw_spin_lock_irqsave + 3.78% [k] generic_smp_call_function_single_interrupt swapout throughput is around 1400M/s. So there is around a 7% improvement, and total cpu utilization doesn't change. Without the patch, cfd_data is shared by all CPUs. generic_smp_call_function_interrupt does read/write cfd_data several times which will create a lot of cache ping-pong. With the patch, the data becomes per-cpu. The ping-pong is avoided. And from the perf data, this doesn't make call_single_queue lock contend. Next step is to remove generic_smp_call_function_interrupt() from arch code. Signed-off-by: Shaohua Li Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Steven Rostedt Cc: Jens Axboe Cc: Linus Torvalds Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/smp.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/smp.h b/include/linux/smp.h index dd6f06be3c9f..3e07a7df6478 100644 --- a/include/linux/smp.h +++ b/include/linux/smp.h @@ -89,7 +89,8 @@ void kick_all_cpus_sync(void); #ifdef CONFIG_USE_GENERIC_SMP_HELPERS void __init call_function_init(void); void generic_smp_call_function_single_interrupt(void); -void generic_smp_call_function_interrupt(void); +#define generic_smp_call_function_interrupt \ + generic_smp_call_function_single_interrupt #else static inline void call_function_init(void) { } #endif -- cgit v1.2.3 From 36d308d8b547ee19d3fa7399858e5a1632413d0e Mon Sep 17 00:00:00 2001 From: Mikhail Gruzdev Date: Thu, 21 Feb 2013 16:43:10 -0800 Subject: printk: add pr_devel_once and pr_devel_ratelimited Standardize pr_devel logging macros family by adding pr_devel_once and pr_devel_ratelimited. Signed-off-by: Mikhail Gruzdev Acked-by: Greg Kroah-Hartman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/printk.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'include/linux') diff --git a/include/linux/printk.h b/include/linux/printk.h index 86c4b6294713..54419f4f82c2 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -252,6 +252,15 @@ extern void dump_stack(void) __cold; printk_once(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) #define pr_cont_once(fmt, ...) \ printk_once(KERN_CONT pr_fmt(fmt), ##__VA_ARGS__) + +#if defined(DEBUG) +#define pr_devel_once(fmt, ...) \ + printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) +#else +#define pr_devel_once(fmt, ...) \ + no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) +#endif + /* If you are writing a driver, please use dev_dbg instead */ #if defined(DEBUG) #define pr_debug_once(fmt, ...) \ @@ -295,6 +304,15 @@ extern void dump_stack(void) __cold; #define pr_info_ratelimited(fmt, ...) \ printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) /* no pr_cont_ratelimited, don't do that... */ + +#if defined(DEBUG) +#define pr_devel_ratelimited(fmt, ...) \ + printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) +#else +#define pr_devel_ratelimited(fmt, ...) \ + no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) +#endif + /* If you are writing a driver, please use dev_dbg instead */ #if defined(DEBUG) #define pr_debug_ratelimited(fmt, ...) \ -- cgit v1.2.3 From 26e8ccc223ebfd2047a96074f142544dc7062cfe Mon Sep 17 00:00:00 2001 From: "Kim, Milo" Date: Thu, 21 Feb 2013 16:44:06 -0800 Subject: backlight: lp855x_bl: support new LP8557 device LP8557 is one of LP855x family device, but it has different register map and initialization process. To support this device, device specific configuration is done through the lp855x_device_config structure. Few register definitions are fixed for better readability. BRIGHTNESS_CTRL -> LP855X_BRIGHTNESS_CTRL DEVICE_CTRL -> LP855X_DEVICE_CTRL EEPROM_START -> LP855X_EEPROM_START EEPROM_END -> LP855X_EEPROM_END EPROM_START -> LP8556_EPROM_START EPROM_END -> LP8556_EPROM_END And LP8557 register definitions are added. New register function, lp855x_update_bit() is added. Signed-off-by: Milo(Woogyom) Kim Acked-by: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/platform_data/lp855x.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/lp855x.h b/include/linux/platform_data/lp855x.h index e81f62d24ee2..20ee8b221dbd 100644 --- a/include/linux/platform_data/lp855x.h +++ b/include/linux/platform_data/lp855x.h @@ -49,12 +49,24 @@ #define LP8556_FAST_CONFIG BIT(7) /* use it if EPROMs should be maintained when exiting the low power mode */ +/* CONFIG register - LP8557 */ +#define LP8557_PWM_STANDBY BIT(7) +#define LP8557_PWM_FILTER BIT(6) +#define LP8557_RELOAD_EPROM BIT(3) /* use it if EPROMs should be reset + when the backlight turns on */ +#define LP8557_OFF_OPENLEDS BIT(2) +#define LP8557_PWM_CONFIG LP8557_PWM_ONLY +#define LP8557_I2C_CONFIG LP8557_I2C_ONLY +#define LP8557_COMB1_CONFIG LP8557_COMBINED1 +#define LP8557_COMB2_CONFIG LP8557_COMBINED2 + enum lp855x_chip_id { LP8550, LP8551, LP8552, LP8553, LP8556, + LP8557, }; enum lp855x_brightness_ctrl_mode { @@ -89,6 +101,13 @@ enum lp8556_brightness_source { LP8556_COMBINED2, /* pwm + i2c after the shaper block */ }; +enum lp8557_brightness_source { + LP8557_PWM_ONLY, + LP8557_I2C_ONLY, + LP8557_COMBINED1, /* pwm + i2c after the shaper block */ + LP8557_COMBINED2, /* pwm + i2c before the shaper block */ +}; + struct lp855x_rom_data { u8 addr; u8 val; -- cgit v1.2.3 From f142d3bd556c5e82e9bb3d33d07d6708702ea4ce Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Wed, 21 Nov 2012 15:29:29 +0100 Subject: video: Add generic HDMI infoframe helpers Add generic helpers to pack HDMI infoframes into binary buffers. Signed-off-by: Thierry Reding Reviewed-by: Alex Deucher --- include/linux/hdmi.h | 231 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 231 insertions(+) create mode 100644 include/linux/hdmi.h (limited to 'include/linux') diff --git a/include/linux/hdmi.h b/include/linux/hdmi.h new file mode 100644 index 000000000000..3b589440ecfe --- /dev/null +++ b/include/linux/hdmi.h @@ -0,0 +1,231 @@ +/* + * Copyright (C) 2012 Avionic Design GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __LINUX_HDMI_H_ +#define __LINUX_HDMI_H_ + +#include + +enum hdmi_infoframe_type { + HDMI_INFOFRAME_TYPE_VENDOR = 0x81, + HDMI_INFOFRAME_TYPE_AVI = 0x82, + HDMI_INFOFRAME_TYPE_SPD = 0x83, + HDMI_INFOFRAME_TYPE_AUDIO = 0x84, +}; + +#define HDMI_INFOFRAME_HEADER_SIZE 4 +#define HDMI_AVI_INFOFRAME_SIZE 13 +#define HDMI_SPD_INFOFRAME_SIZE 25 +#define HDMI_AUDIO_INFOFRAME_SIZE 10 + +enum hdmi_colorspace { + HDMI_COLORSPACE_RGB, + HDMI_COLORSPACE_YUV422, + HDMI_COLORSPACE_YUV444, +}; + +enum hdmi_scan_mode { + HDMI_SCAN_MODE_NONE, + HDMI_SCAN_MODE_OVERSCAN, + HDMI_SCAN_MODE_UNDERSCAN, +}; + +enum hdmi_colorimetry { + HDMI_COLORIMETRY_NONE, + HDMI_COLORIMETRY_ITU_601, + HDMI_COLORIMETRY_ITU_709, + HDMI_COLORIMETRY_EXTENDED, +}; + +enum hdmi_picture_aspect { + HDMI_PICTURE_ASPECT_NONE, + HDMI_PICTURE_ASPECT_4_3, + HDMI_PICTURE_ASPECT_16_9, +}; + +enum hdmi_active_aspect { + HDMI_ACTIVE_ASPECT_16_9_TOP = 2, + HDMI_ACTIVE_ASPECT_14_9_TOP = 3, + HDMI_ACTIVE_ASPECT_16_9_CENTER = 4, + HDMI_ACTIVE_ASPECT_PICTURE = 8, + HDMI_ACTIVE_ASPECT_4_3 = 9, + HDMI_ACTIVE_ASPECT_16_9 = 10, + HDMI_ACTIVE_ASPECT_14_9 = 11, + HDMI_ACTIVE_ASPECT_4_3_SP_14_9 = 13, + HDMI_ACTIVE_ASPECT_16_9_SP_14_9 = 14, + HDMI_ACTIVE_ASPECT_16_9_SP_4_3 = 15, +}; + +enum hdmi_extended_colorimetry { + HDMI_EXTENDED_COLORIMETRY_XV_YCC_601, + HDMI_EXTENDED_COLORIMETRY_XV_YCC_709, + HDMI_EXTENDED_COLORIMETRY_S_YCC_601, + HDMI_EXTENDED_COLORIMETRY_ADOBE_YCC_601, + HDMI_EXTENDED_COLORIMETRY_ADOBE_RGB, +}; + +enum hdmi_quantization_range { + HDMI_QUANTIZATION_RANGE_DEFAULT, + HDMI_QUANTIZATION_RANGE_LIMITED, + HDMI_QUANTIZATION_RANGE_FULL, +}; + +/* non-uniform picture scaling */ +enum hdmi_nups { + HDMI_NUPS_UNKNOWN, + HDMI_NUPS_HORIZONTAL, + HDMI_NUPS_VERTICAL, + HDMI_NUPS_BOTH, +}; + +enum hdmi_ycc_quantization_range { + HDMI_YCC_QUANTIZATION_RANGE_LIMITED, + HDMI_YCC_QUANTIZATION_RANGE_FULL, +}; + +enum hdmi_content_type { + HDMI_CONTENT_TYPE_NONE, + HDMI_CONTENT_TYPE_PHOTO, + HDMI_CONTENT_TYPE_CINEMA, + HDMI_CONTENT_TYPE_GAME, +}; + +struct hdmi_avi_infoframe { + enum hdmi_infoframe_type type; + unsigned char version; + unsigned char length; + enum hdmi_colorspace colorspace; + bool active_info_valid; + bool horizontal_bar_valid; + bool vertical_bar_valid; + enum hdmi_scan_mode scan_mode; + enum hdmi_colorimetry colorimetry; + enum hdmi_picture_aspect picture_aspect; + enum hdmi_active_aspect active_aspect; + bool itc; + enum hdmi_extended_colorimetry extended_colorimetry; + enum hdmi_quantization_range quantization_range; + enum hdmi_nups nups; + unsigned char video_code; + enum hdmi_ycc_quantization_range ycc_quantization_range; + enum hdmi_content_type content_type; + unsigned char pixel_repeat; + unsigned short top_bar; + unsigned short bottom_bar; + unsigned short left_bar; + unsigned short right_bar; +}; + +int hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame); +ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer, + size_t size); + +enum hdmi_spd_sdi { + HDMI_SPD_SDI_UNKNOWN, + HDMI_SPD_SDI_DSTB, + HDMI_SPD_SDI_DVDP, + HDMI_SPD_SDI_DVHS, + HDMI_SPD_SDI_HDDVR, + HDMI_SPD_SDI_DVC, + HDMI_SPD_SDI_DSC, + HDMI_SPD_SDI_VCD, + HDMI_SPD_SDI_GAME, + HDMI_SPD_SDI_PC, + HDMI_SPD_SDI_BD, + HDMI_SPD_SDI_SACD, + HDMI_SPD_SDI_HDDVD, + HDMI_SPD_SDI_PMP, +}; + +struct hdmi_spd_infoframe { + enum hdmi_infoframe_type type; + unsigned char version; + unsigned char length; + char vendor[8]; + char product[16]; + enum hdmi_spd_sdi sdi; +}; + +int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame, + const char *vendor, const char *product); +ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame, void *buffer, + size_t size); + +enum hdmi_audio_coding_type { + HDMI_AUDIO_CODING_TYPE_STREAM, + HDMI_AUDIO_CODING_TYPE_PCM, + HDMI_AUDIO_CODING_TYPE_AC3, + HDMI_AUDIO_CODING_TYPE_MPEG1, + HDMI_AUDIO_CODING_TYPE_MP3, + HDMI_AUDIO_CODING_TYPE_MPEG2, + HDMI_AUDIO_CODING_TYPE_AAC_LC, + HDMI_AUDIO_CODING_TYPE_DTS, + HDMI_AUDIO_CODING_TYPE_ATRAC, + HDMI_AUDIO_CODING_TYPE_DSD, + HDMI_AUDIO_CODING_TYPE_EAC3, + HDMI_AUDIO_CODING_TYPE_DTS_HD, + HDMI_AUDIO_CODING_TYPE_MLP, + HDMI_AUDIO_CODING_TYPE_DST, + HDMI_AUDIO_CODING_TYPE_WMA_PRO, +}; + +enum hdmi_audio_sample_size { + HDMI_AUDIO_SAMPLE_SIZE_STREAM, + HDMI_AUDIO_SAMPLE_SIZE_16, + HDMI_AUDIO_SAMPLE_SIZE_20, + HDMI_AUDIO_SAMPLE_SIZE_24, +}; + +enum hdmi_audio_sample_frequency { + HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM, + HDMI_AUDIO_SAMPLE_FREQUENCY_32000, + HDMI_AUDIO_SAMPLE_FREQUENCY_44100, + HDMI_AUDIO_SAMPLE_FREQUENCY_48000, + HDMI_AUDIO_SAMPLE_FREQUENCY_88200, + HDMI_AUDIO_SAMPLE_FREQUENCY_96000, + HDMI_AUDIO_SAMPLE_FREQUENCY_176400, + HDMI_AUDIO_SAMPLE_FREQUENCY_192000, +}; + +enum hdmi_audio_coding_type_ext { + HDMI_AUDIO_CODING_TYPE_EXT_STREAM, + HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC, + HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC_V2, + HDMI_AUDIO_CODING_TYPE_EXT_MPEG_SURROUND, +}; + +struct hdmi_audio_infoframe { + enum hdmi_infoframe_type type; + unsigned char version; + unsigned char length; + unsigned char channels; + enum hdmi_audio_coding_type coding_type; + enum hdmi_audio_sample_size sample_size; + enum hdmi_audio_sample_frequency sample_frequency; + enum hdmi_audio_coding_type_ext coding_type_ext; + unsigned char channel_allocation; + unsigned char level_shift_value; + bool downmix_inhibit; + +}; + +int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame); +ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame, + void *buffer, size_t size); + +struct hdmi_vendor_infoframe { + enum hdmi_infoframe_type type; + unsigned char version; + unsigned char length; + u8 data[27]; +}; + +ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame, + void *buffer, size_t size); + +#endif /* _DRM_HDMI_H */ -- cgit v1.2.3 From 24dea0c9feccf699749f860fa2f4ccd84d30390d Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 31 Jan 2013 21:06:34 +0400 Subject: mtd: map: BUG() in non handled cases Several map-related functions look like a serie of ifs, checking widths of map. Those functions do not have any handling for default case. Instead of fiddling with uninitialized_var in those functions, let's just add a (correct) BUG() to the default case on those maps. This will also allow us to catch potential errors in maps setup in future. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Artem Bityutskiy --- include/linux/mtd/map.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h index 8b9bfd7dcaa3..4b02512e421c 100644 --- a/include/linux/mtd/map.h +++ b/include/linux/mtd/map.h @@ -329,7 +329,7 @@ static inline int map_word_bitsset(struct map_info *map, map_word val1, map_word static inline map_word map_word_load(struct map_info *map, const void *ptr) { - map_word r = {{0} }; + map_word r; if (map_bankwidth_is_1(map)) r.x[0] = *(unsigned char *)ptr; @@ -343,6 +343,8 @@ static inline map_word map_word_load(struct map_info *map, const void *ptr) #endif else if (map_bankwidth_is_large(map)) memcpy(r.x, ptr, map->bankwidth); + else + BUG(); return r; } @@ -392,7 +394,7 @@ static inline map_word map_word_ff(struct map_info *map) static inline map_word inline_map_read(struct map_info *map, unsigned long ofs) { - map_word uninitialized_var(r); + map_word r; if (map_bankwidth_is_1(map)) r.x[0] = __raw_readb(map->virt + ofs); @@ -426,6 +428,8 @@ static inline void inline_map_write(struct map_info *map, const map_word datum, #endif else if (map_bankwidth_is_large(map)) memcpy_toio(map->virt+ofs, datum.x, map->bankwidth); + else + BUG(); mb(); } -- cgit v1.2.3 From 45ebd3945b2a3cf4eb89d5fb0090a3cb71af7973 Mon Sep 17 00:00:00 2001 From: Clark Williams Date: Wed, 20 Feb 2013 09:19:09 -0600 Subject: sched: Move RR_TIMESLICE from sysctl.h to rt.h This fixes an ia64 build bug reported by Tony Luck. Reported-by: Tony Luck Signed-off-by: Clark Williams Cc: Peter Zijlstra Cc: Steven Rostedt Link: http://lkml.kernel.org/r/1361373550-4011-2-git-send-email-clark.williams@gmail.com Signed-off-by: Ingo Molnar --- include/linux/sched/rt.h | 6 ++++++ include/linux/sched/sysctl.h | 6 ------ 2 files changed, 6 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched/rt.h b/include/linux/sched/rt.h index 94e19ea28fc3..440434df3627 100644 --- a/include/linux/sched/rt.h +++ b/include/linux/sched/rt.h @@ -55,4 +55,10 @@ static inline bool tsk_is_pi_blocked(struct task_struct *tsk) extern void normalize_rt_tasks(void); +/* + * default timeslice is 100 msecs (used only for SCHED_RR tasks). + * Timeslices get refilled after they expire. + */ +#define RR_TIMESLICE (100 * HZ / 1000) + #endif /* _SCHED_RT_H */ diff --git a/include/linux/sched/sysctl.h b/include/linux/sched/sysctl.h index d2bb0ae979d0..bf8086b2506e 100644 --- a/include/linux/sched/sysctl.h +++ b/include/linux/sched/sysctl.h @@ -91,12 +91,6 @@ extern unsigned int sysctl_sched_cfs_bandwidth_slice; extern unsigned int sysctl_sched_autogroup_enabled; #endif -/* - * default timeslice is 100 msecs (used only for SCHED_RR tasks). - * Timeslices get refilled after they expire. - */ -#define RR_TIMESLICE (100 * HZ / 1000) - extern int sched_rr_timeslice; extern int sched_rr_handler(struct ctl_table *table, int write, -- cgit v1.2.3 From bc681593b588786e6326b3e5f78ccc1683e2269c Mon Sep 17 00:00:00 2001 From: Clark Williams Date: Fri, 22 Feb 2013 09:20:11 -0800 Subject: sched: move RR_TIMESLICE from sysctl.h to rt.h Originally submitted by Clark Williams as part of a cleanup, but happens also to fix an ia64 build problem: arch/ia64/kernel/init_task.c:38: error: 'RR_TIMESLICE' undeclared here (not in a function) Signed-off-by: Clark Williams Signed-off-by: Tony Luck --- include/linux/sched/rt.h | 6 ++++++ include/linux/sched/sysctl.h | 6 ------ 2 files changed, 6 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched/rt.h b/include/linux/sched/rt.h index 94e19ea28fc3..440434df3627 100644 --- a/include/linux/sched/rt.h +++ b/include/linux/sched/rt.h @@ -55,4 +55,10 @@ static inline bool tsk_is_pi_blocked(struct task_struct *tsk) extern void normalize_rt_tasks(void); +/* + * default timeslice is 100 msecs (used only for SCHED_RR tasks). + * Timeslices get refilled after they expire. + */ +#define RR_TIMESLICE (100 * HZ / 1000) + #endif /* _SCHED_RT_H */ diff --git a/include/linux/sched/sysctl.h b/include/linux/sched/sysctl.h index d2bb0ae979d0..bf8086b2506e 100644 --- a/include/linux/sched/sysctl.h +++ b/include/linux/sched/sysctl.h @@ -91,12 +91,6 @@ extern unsigned int sysctl_sched_cfs_bandwidth_slice; extern unsigned int sysctl_sched_autogroup_enabled; #endif -/* - * default timeslice is 100 msecs (used only for SCHED_RR tasks). - * Timeslices get refilled after they expire. - */ -#define RR_TIMESLICE (100 * HZ / 1000) - extern int sched_rr_timeslice; extern int sched_rr_handler(struct ctl_table *table, int write, -- cgit v1.2.3 From d6561bb206aae9de8eee4516549339ee96386b87 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Thu, 21 Feb 2013 11:04:45 +0000 Subject: PM / OPP: fix condition for empty of_init_opp_table() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit randconfig build reports the following error which is caused by CONFIG_PM_OPP being unset. CC arch/arm/mach-imx/mach-imx6q.o arch/arm/mach-imx/mach-imx6q.c: In function ‘imx6q_opp_init’: arch/arm/mach-imx/mach-imx6q.c:248:2: error: implicit declaration of function ‘of_init_opp_table’ [-Werror=implicit-function-declaration] Fix the error by giving a more correct condition for empty of_init_opp_table() implementation. Reported-by: Rob Herring Signed-off-by: Shawn Guo Acked-by: Nishanth Menon Signed-off-by: Rafael J. Wysocki --- include/linux/opp.h | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/opp.h b/include/linux/opp.h index 214e0ebcb84d..3aca2b8def33 100644 --- a/include/linux/opp.h +++ b/include/linux/opp.h @@ -47,15 +47,6 @@ int opp_enable(struct device *dev, unsigned long freq); int opp_disable(struct device *dev, unsigned long freq); struct srcu_notifier_head *opp_get_notifier(struct device *dev); - -#ifdef CONFIG_OF -int of_init_opp_table(struct device *dev); -#else -static inline int of_init_opp_table(struct device *dev) -{ - return -EINVAL; -} -#endif /* CONFIG_OF */ #else static inline unsigned long opp_get_voltage(struct opp *opp) { @@ -112,6 +103,15 @@ static inline struct srcu_notifier_head *opp_get_notifier(struct device *dev) } #endif /* CONFIG_PM_OPP */ +#if defined(CONFIG_PM_OPP) && defined(CONFIG_OF) +int of_init_opp_table(struct device *dev); +#else +static inline int of_init_opp_table(struct device *dev) +{ + return -EINVAL; +} +#endif + #if defined(CONFIG_CPU_FREQ) && defined(CONFIG_PM_OPP) int opp_init_cpufreq_table(struct device *dev, struct cpufreq_frequency_table **table); -- cgit v1.2.3 From 496ad9aa8ef448058e36ca7a787c61f2e63f0f54 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 23 Jan 2013 17:07:38 -0500 Subject: new helper: file_inode(file) Signed-off-by: Al Viro --- include/linux/fs.h | 9 +++++++-- include/linux/fsnotify.h | 2 +- include/linux/hugetlb.h | 2 +- include/linux/lockd/lockd.h | 2 +- 4 files changed, 10 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 7617ee04f066..3ab69777b4d8 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2217,6 +2217,11 @@ static inline bool execute_ok(struct inode *inode) return (inode->i_mode & S_IXUGO) || S_ISDIR(inode->i_mode); } +static inline struct inode *file_inode(struct file *f) +{ + return f->f_path.dentry->d_inode; +} + /* * get_write_access() gets write permission for a file. * put_write_access() releases this write permission. @@ -2239,7 +2244,7 @@ static inline int get_write_access(struct inode *inode) } static inline int deny_write_access(struct file *file) { - struct inode *inode = file->f_path.dentry->d_inode; + struct inode *inode = file_inode(file); return atomic_dec_unless_positive(&inode->i_writecount) ? 0 : -ETXTBSY; } static inline void put_write_access(struct inode * inode) @@ -2249,7 +2254,7 @@ static inline void put_write_access(struct inode * inode) static inline void allow_write_access(struct file *file) { if (file) - atomic_inc(&file->f_path.dentry->d_inode->i_writecount); + atomic_inc(&file_inode(file)->i_writecount); } #ifdef CONFIG_IMA static inline void i_readcount_dec(struct inode *inode) diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h index 0fbfb4646d1b..a78680a92dba 100644 --- a/include/linux/fsnotify.h +++ b/include/linux/fsnotify.h @@ -244,7 +244,7 @@ static inline void fsnotify_open(struct file *file) static inline void fsnotify_close(struct file *file) { struct path *path = &file->f_path; - struct inode *inode = file->f_path.dentry->d_inode; + struct inode *inode = file_inode(file); fmode_t mode = file->f_mode; __u32 mask = (mode & FMODE_WRITE) ? FS_CLOSE_WRITE : FS_CLOSE_NOWRITE; diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 0c80d3f57a5b..70832951f97c 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -281,7 +281,7 @@ static inline struct hstate *hstate_inode(struct inode *i) static inline struct hstate *hstate_file(struct file *f) { - return hstate_inode(f->f_dentry->d_inode); + return hstate_inode(file_inode(f)); } static inline struct hstate *hstate_vma(struct vm_area_struct *vma) diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h index f5a051a79273..0e62d84f9f7f 100644 --- a/include/linux/lockd/lockd.h +++ b/include/linux/lockd/lockd.h @@ -291,7 +291,7 @@ int nlmsvc_unlock_all_by_ip(struct sockaddr *server_addr); static inline struct inode *nlmsvc_file_inode(struct nlm_file *file) { - return file->f_file->f_path.dentry->d_inode; + return file_inode(file->f_file); } static inline int __nlm_privileged_request4(const struct sockaddr *sap) -- cgit v1.2.3 From ad8ca3743cb7eef0eb8a2e87943c513201685eec Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 15 Jan 2013 12:54:29 -0500 Subject: vfs: remove d_path_with_unreachable The last caller was removed >2 years ago in commit 7b2a69ba7. Signed-off-by: Jeff Layton Signed-off-by: Al Viro --- include/linux/dcache.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index c1754b59ddd3..63e96844a8e8 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -333,7 +333,6 @@ extern char *dynamic_dname(struct dentry *, char *, int, const char *, ...); extern char *__d_path(const struct path *, const struct path *, char *, int); extern char *d_absolute_path(const struct path *, char *, int); extern char *d_path(const struct path *, char *, int); -extern char *d_path_with_unreachable(const struct path *, char *, int); extern char *dentry_path_raw(struct dentry *, char *, int); extern char *dentry_path(struct dentry *, char *, int); -- cgit v1.2.3 From a713ca2ab9d14dc5c86634bc445ce1f66552c169 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 24 Jan 2013 18:27:00 -0500 Subject: constify __d_lookup() arguments Signed-off-by: Al Viro --- include/linux/dcache.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index 63e96844a8e8..969086c03301 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -295,7 +295,7 @@ extern struct dentry *d_ancestor(struct dentry *, struct dentry *); /* appendix may either be NULL or be used for transname suffixes */ extern struct dentry *d_lookup(struct dentry *, struct qstr *); extern struct dentry *d_hash_and_lookup(struct dentry *, struct qstr *); -extern struct dentry *__d_lookup(struct dentry *, struct qstr *); +extern struct dentry *__d_lookup(const struct dentry *, const struct qstr *); extern struct dentry *__d_lookup_rcu(const struct dentry *parent, const struct qstr *name, unsigned *seq, struct inode *inode); -- cgit v1.2.3 From da2d8455ed7eb22d7642ecee43dc463ac42a1256 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 24 Jan 2013 18:29:34 -0500 Subject: constify d_lookup() arguments Signed-off-by: Al Viro --- include/linux/dcache.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index 969086c03301..03d169288423 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -293,7 +293,7 @@ extern void d_move(struct dentry *, struct dentry *); extern struct dentry *d_ancestor(struct dentry *, struct dentry *); /* appendix may either be NULL or be used for transname suffixes */ -extern struct dentry *d_lookup(struct dentry *, struct qstr *); +extern struct dentry *d_lookup(const struct dentry *, const struct qstr *); extern struct dentry *d_hash_and_lookup(struct dentry *, struct qstr *); extern struct dentry *__d_lookup(const struct dentry *, const struct qstr *); extern struct dentry *__d_lookup_rcu(const struct dentry *parent, -- cgit v1.2.3 From d778df51c09264076fe0208c099ef7d428f21790 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Fri, 22 Feb 2013 16:32:12 -0800 Subject: mm: vmscan: save work scanning (almost) empty LRU lists In certain cases (kswapd reclaim, memcg target reclaim), a fixed minimum amount of pages is scanned from the LRU lists on each iteration, to make progress. Do not make this minimum bigger than the respective LRU list size, however, and save some busy work trying to isolate and reclaim pages that are not there. Empty LRU lists are quite common with memory cgroups in NUMA environments because there exists a set of LRU lists for each zone for each memory cgroup, while the memory of a single cgroup is expected to stay on just one node. The number of expected empty LRU lists is thus memcgs * (nodes - 1) * lru types Each attempt to reclaim from an empty LRU list does expensive size comparisons between lists, acquires the zone's lru lock etc. Avoid that. Signed-off-by: Johannes Weiner Reviewed-by: Rik van Riel Acked-by: Mel Gorman Reviewed-by: Michal Hocko Cc: Hugh Dickins Cc: Satoru Moriya Cc: Simon Jeons Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/swap.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/swap.h b/include/linux/swap.h index 68df9c17fbbb..8c66486a8ca8 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -156,7 +156,7 @@ enum { SWP_SCANNING = (1 << 8), /* refcount in scan_swap_map */ }; -#define SWAP_CLUSTER_MAX 32 +#define SWAP_CLUSTER_MAX 32UL #define COMPACT_CLUSTER_MAX SWAP_CLUSTER_MAX /* -- cgit v1.2.3 From 7103f16dbff20fa969c9500902d980d17f953fa6 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Fri, 22 Feb 2013 16:32:33 -0800 Subject: mm: compaction: make __compact_pgdat() and compact_pgdat() return void These functions always return 0. Formalise this. Cc: Jason Liu Cc: KAMEZAWA Hiroyuki Cc: Mel Gorman Cc: Minchan Kim Cc: Rik van Riel Acked-by: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/compaction.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/compaction.h b/include/linux/compaction.h index cc7bddeaf553..091d72e70d8a 100644 --- a/include/linux/compaction.h +++ b/include/linux/compaction.h @@ -23,7 +23,7 @@ extern int fragmentation_index(struct zone *zone, unsigned int order); extern unsigned long try_to_compact_pages(struct zonelist *zonelist, int order, gfp_t gfp_mask, nodemask_t *mask, bool sync, bool *contended); -extern int compact_pgdat(pg_data_t *pgdat, int order); +extern void compact_pgdat(pg_data_t *pgdat, int order); extern void reset_isolation_suitable(pg_data_t *pgdat); extern unsigned long compaction_suitable(struct zone *zone, int order); @@ -80,9 +80,8 @@ static inline unsigned long try_to_compact_pages(struct zonelist *zonelist, return COMPACT_CONTINUE; } -static inline int compact_pgdat(pg_data_t *pgdat, int order) +static inline void compact_pgdat(pg_data_t *pgdat, int order) { - return COMPACT_CONTINUE; } static inline void reset_isolation_suitable(pg_data_t *pgdat) -- cgit v1.2.3 From bebeb3d68b24bb4132d452c5707fe321208bcbcd Mon Sep 17 00:00:00 2001 From: Michel Lespinasse Date: Fri, 22 Feb 2013 16:32:37 -0800 Subject: mm: introduce mm_populate() for populating new vmas When creating new mappings using the MAP_POPULATE / MAP_LOCKED flags (or with MCL_FUTURE in effect), we want to populate the pages within the newly created vmas. This may take a while as we may have to read pages from disk, so ideally we want to do this outside of the write-locked mmap_sem region. This change introduces mm_populate(), which is used to defer populating such mappings until after the mmap_sem write lock has been released. This is implemented as a generalization of the former do_mlock_pages(), which accomplished the same task but was using during mlock() / mlockall(). Signed-off-by: Michel Lespinasse Reported-by: Andy Lutomirski Acked-by: Rik van Riel Tested-by: Andy Lutomirski Cc: Greg Ungerer Cc: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 9d9dcc35d6a1..da0a0fe970c2 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1474,11 +1474,23 @@ extern unsigned long get_unmapped_area(struct file *, unsigned long, unsigned lo extern unsigned long mmap_region(struct file *file, unsigned long addr, unsigned long len, unsigned long flags, vm_flags_t vm_flags, unsigned long pgoff); -extern unsigned long do_mmap_pgoff(struct file *, unsigned long, - unsigned long, unsigned long, - unsigned long, unsigned long); +extern unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, + unsigned long len, unsigned long prot, unsigned long flags, + unsigned long pgoff, bool *populate); extern int do_munmap(struct mm_struct *, unsigned long, size_t); +#ifdef CONFIG_MMU +extern int __mm_populate(unsigned long addr, unsigned long len, + int ignore_errors); +static inline void mm_populate(unsigned long addr, unsigned long len) +{ + /* Ignore errors */ + (void) __mm_populate(addr, len, 1); +} +#else +static inline void mm_populate(unsigned long addr, unsigned long len) {} +#endif + /* These take the mm semaphore themselves */ extern unsigned long vm_brk(unsigned long, unsigned long); extern int vm_munmap(unsigned long, size_t); -- cgit v1.2.3 From c22c0d6344c362b1dde5d8e160d3d07536aca120 Mon Sep 17 00:00:00 2001 From: Michel Lespinasse Date: Fri, 22 Feb 2013 16:32:43 -0800 Subject: mm: remove flags argument to mmap_region After the MAP_POPULATE handling has been moved to mmap_region() call sites, the only remaining use of the flags argument is to pass the MAP_NORESERVE flag. This can be just as easily handled by do_mmap_pgoff(), so do that and remove the mmap_region() flags parameter. [akpm@linux-foundation.org: remove double parens] Signed-off-by: Michel Lespinasse Acked-by: Rik van Riel Tested-by: Andy Lutomirski Cc: Greg Ungerer Cc: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index da0a0fe970c2..8332f3069fe3 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1472,8 +1472,7 @@ extern int install_special_mapping(struct mm_struct *mm, extern unsigned long get_unmapped_area(struct file *, unsigned long, unsigned long, unsigned long, unsigned long); extern unsigned long mmap_region(struct file *file, unsigned long addr, - unsigned long len, unsigned long flags, - vm_flags_t vm_flags, unsigned long pgoff); + unsigned long len, vm_flags_t vm_flags, unsigned long pgoff); extern unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, unsigned long pgoff, bool *populate); -- cgit v1.2.3 From cea10a19b7972a1954c4a2d05a7de8db48b444fb Mon Sep 17 00:00:00 2001 From: Michel Lespinasse Date: Fri, 22 Feb 2013 16:32:44 -0800 Subject: mm: directly use __mlock_vma_pages_range() in find_extend_vma() In find_extend_vma(), we don't need mlock_vma_pages_range() to verify the vma type - we know we're working with a stack. So, we can call directly into __mlock_vma_pages_range(), and remove the last make_pages_present() call site. Note that we don't use mm_populate() here, so we can't release the mmap_sem while allocating new stack pages. This is deemed acceptable, because the stack vmas grow by a bounded number of pages at a time, and these are anon pages so we don't have to read from disk to populate them. Signed-off-by: Michel Lespinasse Acked-by: Rik van Riel Tested-by: Andy Lutomirski Cc: Greg Ungerer Cc: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 8332f3069fe3..0c34d3486816 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1035,7 +1035,6 @@ static inline int fixup_user_fault(struct task_struct *tsk, } #endif -extern int make_pages_present(unsigned long addr, unsigned long end); extern int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write); extern int access_remote_vm(struct mm_struct *mm, unsigned long addr, void *buf, int len, int write); -- cgit v1.2.3 From 1869305009857cdeaabe6283bcdc2359c5784543 Mon Sep 17 00:00:00 2001 From: Michel Lespinasse Date: Fri, 22 Feb 2013 16:32:46 -0800 Subject: mm: introduce VM_POPULATE flag to better deal with racy userspace programs The vm_populate() code populates user mappings without constantly holding the mmap_sem. This makes it susceptible to racy userspace programs: the user mappings may change while vm_populate() is running, and in this case vm_populate() may end up populating the new mapping instead of the old one. In order to reduce the possibility of userspace getting surprised by this behavior, this change introduces the VM_POPULATE vma flag which gets set on vmas we want vm_populate() to work on. This way vm_populate() may still end up populating the new mapping after such a race, but only if the new mapping is also one that the user has requested (using MAP_SHARED, MAP_LOCKED or mlock) to be populated. Signed-off-by: Michel Lespinasse Acked-by: Rik van Riel Tested-by: Andy Lutomirski Cc: Greg Ungerer Cc: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 1 + include/linux/mman.h | 4 +++- 2 files changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 0c34d3486816..9a5fcdeaa3a0 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -87,6 +87,7 @@ extern unsigned int kobjsize(const void *objp); #define VM_PFNMAP 0x00000400 /* Page-ranges managed without "struct page", just pure PFN */ #define VM_DENYWRITE 0x00000800 /* ETXTBSY on write attempts.. */ +#define VM_POPULATE 0x00001000 #define VM_LOCKED 0x00002000 #define VM_IO 0x00004000 /* Memory mapped I/O or similar */ diff --git a/include/linux/mman.h b/include/linux/mman.h index 9aa863da287f..61c7a87e5d2b 100644 --- a/include/linux/mman.h +++ b/include/linux/mman.h @@ -79,6 +79,8 @@ calc_vm_flag_bits(unsigned long flags) { return _calc_vm_trans(flags, MAP_GROWSDOWN, VM_GROWSDOWN ) | _calc_vm_trans(flags, MAP_DENYWRITE, VM_DENYWRITE ) | - _calc_vm_trans(flags, MAP_LOCKED, VM_LOCKED ); + ((flags & MAP_LOCKED) ? (VM_LOCKED | VM_POPULATE) : 0) | + (((flags & (MAP_POPULATE | MAP_NONBLOCK)) == MAP_POPULATE) ? + VM_POPULATE : 0); } #endif /* _LINUX_MMAN_H */ -- cgit v1.2.3 From 41badc15cbad0350de34408c1b0c690f9df76d4b Mon Sep 17 00:00:00 2001 From: Michel Lespinasse Date: Fri, 22 Feb 2013 16:32:47 -0800 Subject: mm: make do_mmap_pgoff return populate as a size in bytes, not as a bool do_mmap_pgoff() rounds up the desired size to the next PAGE_SIZE multiple, however there was no equivalent code in mm_populate(), which caused issues. This could be fixed by introduced the same rounding in mm_populate(), however I think it's preferable to make do_mmap_pgoff() return populate as a size rather than as a boolean, so we don't have to duplicate the size rounding logic in mm_populate(). Signed-off-by: Michel Lespinasse Acked-by: Rik van Riel Tested-by: Andy Lutomirski Cc: Greg Ungerer Cc: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 9a5fcdeaa3a0..95db68e34b18 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1475,7 +1475,7 @@ extern unsigned long mmap_region(struct file *file, unsigned long addr, unsigned long len, vm_flags_t vm_flags, unsigned long pgoff); extern unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, - unsigned long pgoff, bool *populate); + unsigned long pgoff, unsigned long *populate); extern int do_munmap(struct mm_struct *, unsigned long, size_t); #ifdef CONFIG_MMU -- cgit v1.2.3 From 6677e3eaf4d78abd7b09133414c05dc3ec353e7f Mon Sep 17 00:00:00 2001 From: Yasuaki Ishimatsu Date: Fri, 22 Feb 2013 16:32:52 -0800 Subject: memory-hotplug: check whether all memory blocks are offlined or not when removing memory We remove the memory like this: 1. lock memory hotplug 2. offline a memory block 3. unlock memory hotplug 4. repeat 1-3 to offline all memory blocks 5. lock memory hotplug 6. remove memory(TODO) 7. unlock memory hotplug All memory blocks must be offlined before removing memory. But we don't hold the lock in the whole operation. So we should check whether all memory blocks are offlined before step6. Otherwise, kernel maybe panicked. Offlining a memory block and removing a memory device can be two different operations. Users can just offline some memory blocks without removing the memory device. For this purpose, the kernel has held lock_memory_hotplug() in __offline_pages(). To reuse the code for memory hot-remove, we repeat step 1-3 to offline all the memory blocks, repeatedly lock and unlock memory hotplug, but not hold the memory hotplug lock in the whole operation. Signed-off-by: Wen Congyang Signed-off-by: Yasuaki Ishimatsu Signed-off-by: Tang Chen Acked-by: KAMEZAWA Hiroyuki Cc: KOSAKI Motohiro Cc: Jiang Liu Cc: Jianguo Wu Cc: Kamezawa Hiroyuki Cc: Lai Jiangshan Cc: Wu Jianguo Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memory_hotplug.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index 4a45c4e50025..8dd0950a6a7a 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -247,6 +247,7 @@ extern int add_memory(int nid, u64 start, u64 size); extern int arch_add_memory(int nid, u64 start, u64 size); extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages); extern int offline_memory_block(struct memory_block *mem); +extern bool is_memblock_offlined(struct memory_block *mem); extern int remove_memory(u64 start, u64 size); extern int sparse_add_one_section(struct zone *zone, unsigned long start_pfn, int nr_pages); -- cgit v1.2.3 From 46c66c4b7ba0f9bb3e2ae3a3cfd40cd3472c8f80 Mon Sep 17 00:00:00 2001 From: Yasuaki Ishimatsu Date: Fri, 22 Feb 2013 16:32:56 -0800 Subject: memory-hotplug: remove /sys/firmware/memmap/X sysfs When (hot)adding memory into system, /sys/firmware/memmap/X/{end, start, type} sysfs files are created. But there is no code to remove these files. This patch implements the function to remove them. We cannot free firmware_map_entry which is allocated by bootmem because there is no way to do so when the system is up. But we can at least remember the address of that memory and reuse the storage when the memory is added next time. This patch also introduces a new list map_entries_bootmem to link the map entries allocated by bootmem when they are removed, and a lock to protect it. And these entries will be reused when the memory is hot-added again. The idea is suggestted by Andrew Morton. NOTE: It is unsafe to return an entry pointer and release the map_entries_lock. So we should not hold the map_entries_lock separately in firmware_map_find_entry() and firmware_map_remove_entry(). Hold the map_entries_lock across find and remove /sys/firmware/memmap/X operation. And also, users of these two functions need to be careful to hold the lock when using these two functions. [tangchen@cn.fujitsu.com: Hold spinlock across find|remove /sys operation] [tangchen@cn.fujitsu.com: fix the wrong comments of map_entries] [tangchen@cn.fujitsu.com: reuse the storage of /sys/firmware/memmap/X/ allocated by bootmem] [tangchen@cn.fujitsu.com: fix section mismatch problem] [tangchen@cn.fujitsu.com: fix the doc format in drivers/firmware/memmap.c] Signed-off-by: Wen Congyang Signed-off-by: Yasuaki Ishimatsu Signed-off-by: Tang Chen Reviewed-by: Kamezawa Hiroyuki Cc: KOSAKI Motohiro Cc: Jiang Liu Cc: Jianguo Wu Cc: Lai Jiangshan Cc: Tang Chen Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Julian Calaby Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/firmware-map.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') diff --git a/include/linux/firmware-map.h b/include/linux/firmware-map.h index 43fe52fcef0f..71d4fa721db9 100644 --- a/include/linux/firmware-map.h +++ b/include/linux/firmware-map.h @@ -25,6 +25,7 @@ int firmware_map_add_early(u64 start, u64 end, const char *type); int firmware_map_add_hotplug(u64 start, u64 end, const char *type); +int firmware_map_remove(u64 start, u64 end, const char *type); #else /* CONFIG_FIRMWARE_MEMMAP */ @@ -38,6 +39,11 @@ static inline int firmware_map_add_hotplug(u64 start, u64 end, const char *type) return 0; } +static inline int firmware_map_remove(u64 start, u64 end, const char *type) +{ + return 0; +} + #endif /* CONFIG_FIRMWARE_MEMMAP */ #endif /* _LINUX_FIRMWARE_MAP_H */ -- cgit v1.2.3 From 24d335ca3606b610ec69c66a1e42760c96d89470 Mon Sep 17 00:00:00 2001 From: Wen Congyang Date: Fri, 22 Feb 2013 16:32:58 -0800 Subject: memory-hotplug: introduce new arch_remove_memory() for removing page table For removing memory, we need to remove page tables. But it depends on architecture. So the patch introduce arch_remove_memory() for removing page table. Now it only calls __remove_pages(). Note: __remove_pages() for some archtecuture is not implemented (I don't know how to implement it for s390). Signed-off-by: Wen Congyang Signed-off-by: Tang Chen Acked-by: KAMEZAWA Hiroyuki Cc: KOSAKI Motohiro Cc: Jiang Liu Cc: Jianguo Wu Cc: Kamezawa Hiroyuki Cc: Lai Jiangshan Cc: Wu Jianguo Cc: Yasuaki Ishimatsu Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memory_hotplug.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index 8dd0950a6a7a..31a563bbd936 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -96,6 +96,7 @@ extern void __online_page_free(struct page *page); #ifdef CONFIG_MEMORY_HOTREMOVE extern bool is_pageblock_removable_nolock(struct page *page); +extern int arch_remove_memory(u64 start, u64 size); #endif /* CONFIG_MEMORY_HOTREMOVE */ /* reasonably generic interface to expand the physical pages in a zone */ -- cgit v1.2.3 From 46723bfa540f0a1e494476a1734d03626a0bd1e0 Mon Sep 17 00:00:00 2001 From: Yasuaki Ishimatsu Date: Fri, 22 Feb 2013 16:33:00 -0800 Subject: memory-hotplug: implement register_page_bootmem_info_section of sparse-vmemmap For removing memmap region of sparse-vmemmap which is allocated bootmem, memmap region of sparse-vmemmap needs to be registered by get_page_bootmem(). So the patch searches pages of virtual mapping and registers the pages by get_page_bootmem(). NOTE: register_page_bootmem_memmap() is not implemented for ia64, ppc, s390, and sparc. So introduce CONFIG_HAVE_BOOTMEM_INFO_NODE and revert register_page_bootmem_info_node() when platform doesn't support it. It's implemented by adding a new Kconfig option named CONFIG_HAVE_BOOTMEM_INFO_NODE, which will be automatically selected by memory-hotplug feature fully supported archs(currently only on x86_64). Since we have 2 config options called MEMORY_HOTPLUG and MEMORY_HOTREMOVE used for memory hot-add and hot-remove separately, and codes in function register_page_bootmem_info_node() are only used for collecting infomation for hot-remove, so reside it under MEMORY_HOTREMOVE. Besides page_isolation.c selected by MEMORY_ISOLATION under MEMORY_HOTPLUG is also such case, move it too. [mhocko@suse.cz: put register_page_bootmem_memmap inside CONFIG_MEMORY_HOTPLUG_SPARSE] [linfeng@cn.fujitsu.com: introduce CONFIG_HAVE_BOOTMEM_INFO_NODE and revert register_page_bootmem_info_node()] [mhocko@suse.cz: remove the arch specific functions without any implementation] [linfeng@cn.fujitsu.com: mm/Kconfig: move auto selects from MEMORY_HOTPLUG to MEMORY_HOTREMOVE as needed] [rientjes@google.com: fix defined but not used warning] Signed-off-by: Wen Congyang Signed-off-by: Yasuaki Ishimatsu Signed-off-by: Tang Chen Reviewed-by: Wu Jianguo Cc: KOSAKI Motohiro Cc: Jiang Liu Cc: Jianguo Wu Cc: Kamezawa Hiroyuki Cc: Lai Jiangshan Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Signed-off-by: Michal Hocko Signed-off-by: Lin Feng Signed-off-by: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memory_hotplug.h | 13 ++++++------- include/linux/mm.h | 3 ++- 2 files changed, 8 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index 31a563bbd936..4d523fe75ba1 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -174,17 +174,16 @@ static inline void arch_refresh_nodedata(int nid, pg_data_t *pgdat) #endif /* CONFIG_NUMA */ #endif /* CONFIG_HAVE_ARCH_NODEDATA_EXTENSION */ -#ifdef CONFIG_SPARSEMEM_VMEMMAP +#ifdef CONFIG_HAVE_BOOTMEM_INFO_NODE +extern void register_page_bootmem_info_node(struct pglist_data *pgdat); +#else static inline void register_page_bootmem_info_node(struct pglist_data *pgdat) { } -static inline void put_page_bootmem(struct page *page) -{ -} -#else -extern void register_page_bootmem_info_node(struct pglist_data *pgdat); -extern void put_page_bootmem(struct page *page); #endif +extern void put_page_bootmem(struct page *page); +extern void get_page_bootmem(unsigned long ingo, struct page *page, + unsigned long type); /* * Lock for memory hotplug guarantees 1) all callbacks for memory hotplug diff --git a/include/linux/mm.h b/include/linux/mm.h index 95db68e34b18..060557b9764f 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1718,7 +1718,8 @@ int vmemmap_populate_basepages(struct page *start_page, unsigned long pages, int node); int vmemmap_populate(struct page *start_page, unsigned long pages, int node); void vmemmap_populate_print_last(void); - +void register_page_bootmem_memmap(unsigned long section_nr, struct page *map, + unsigned long size); enum mf_flags { MF_COUNT_INCREASED = 1 << 0, -- cgit v1.2.3 From ae9aae9eda2db71bf4b592f15618b0160eb07731 Mon Sep 17 00:00:00 2001 From: Wen Congyang Date: Fri, 22 Feb 2013 16:33:04 -0800 Subject: memory-hotplug: common APIs to support page tables hot-remove When memory is removed, the corresponding pagetables should alse be removed. This patch introduces some common APIs to support vmemmap pagetable and x86_64 architecture direct mapping pagetable removing. All pages of virtual mapping in removed memory cannot be freed if some pages used as PGD/PUD include not only removed memory but also other memory. So this patch uses the following way to check whether a page can be freed or not. 1) When removing memory, the page structs of the removed memory are filled with 0FD. 2) All page structs are filled with 0xFD on PT/PMD, PT/PMD can be cleared. In this case, the page used as PT/PMD can be freed. For direct mapping pages, update direct_pages_count[level] when we freed their pagetables. And do not free the pages again because they were freed when offlining. For vmemmap pages, free the pages and their pagetables. For larger pages, do not split them into smaller ones because there is no way to know if the larger page has been split. As a result, there is no way to decide when to split. We deal the larger pages in the following way: 1) For direct mapped pages, all the pages were freed when they were offlined. And since menmory offline is done section by section, all the memory ranges being removed are aligned to PAGE_SIZE. So only need to deal with unaligned pages when freeing vmemmap pages. 2) For vmemmap pages being used to store page_struct, if part of the larger page is still in use, just fill the unused part with 0xFD. And when the whole page is fulfilled with 0xFD, then free the larger page. [akpm@linux-foundation.org: fix typo in comment] [tangchen@cn.fujitsu.com: do not calculate direct mapping pages when freeing vmemmap pagetables] [tangchen@cn.fujitsu.com: do not free direct mapping pages twice] [tangchen@cn.fujitsu.com: do not free page split from hugepage one by one] [tangchen@cn.fujitsu.com: do not split pages when freeing pagetable pages] [akpm@linux-foundation.org: use pmd_page_vaddr()] [akpm@linux-foundation.org: fix used-uninitialised bug] Signed-off-by: Yasuaki Ishimatsu Signed-off-by: Jianguo Wu Signed-off-by: Wen Congyang Signed-off-by: Tang Chen Cc: KOSAKI Motohiro Cc: Jiang Liu Cc: Kamezawa Hiroyuki Cc: Lai Jiangshan Cc: Wu Jianguo Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/bootmem.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h index 3cd16ba82f15..cdc3bab01832 100644 --- a/include/linux/bootmem.h +++ b/include/linux/bootmem.h @@ -53,6 +53,7 @@ extern void free_bootmem_node(pg_data_t *pgdat, unsigned long size); extern void free_bootmem(unsigned long physaddr, unsigned long size); extern void free_bootmem_late(unsigned long physaddr, unsigned long size); +extern void __free_pages_bootmem(struct page *page, unsigned int order); /* * Flags for reserve_bootmem (also if CONFIG_HAVE_ARCH_BOOTMEM_NODE, -- cgit v1.2.3 From 0197518cd3672029618a16a57597946a094ac7a8 Mon Sep 17 00:00:00 2001 From: Tang Chen Date: Fri, 22 Feb 2013 16:33:08 -0800 Subject: memory-hotplug: remove memmap of sparse-vmemmap Introduce a new API vmemmap_free() to free and remove vmemmap pagetables. Since pagetable implements are different, each architecture has to provide its own version of vmemmap_free(), just like vmemmap_populate(). Note: vmemmap_free() is not implemented for ia64, ppc, s390, and sparc. [mhocko@suse.cz: fix implicit declaration of remove_pagetable] Signed-off-by: Yasuaki Ishimatsu Signed-off-by: Jianguo Wu Signed-off-by: Wen Congyang Signed-off-by: Tang Chen Cc: KOSAKI Motohiro Cc: Jiang Liu Cc: Kamezawa Hiroyuki Cc: Lai Jiangshan Cc: Wu Jianguo Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Signed-off-by: Michal Hocko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 060557b9764f..9d659491c0ae 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1718,6 +1718,9 @@ int vmemmap_populate_basepages(struct page *start_page, unsigned long pages, int node); int vmemmap_populate(struct page *start_page, unsigned long pages, int node); void vmemmap_populate_print_last(void); +#ifdef CONFIG_MEMORY_HOTPLUG +void vmemmap_free(struct page *memmap, unsigned long nr_pages); +#endif void register_page_bootmem_memmap(unsigned long section_nr, struct page *map, unsigned long size); -- cgit v1.2.3 From 60a5a19e7419ba0bc22ed01b3285e8940b42944c Mon Sep 17 00:00:00 2001 From: Tang Chen Date: Fri, 22 Feb 2013 16:33:14 -0800 Subject: memory-hotplug: remove sysfs file of node Introduce a new function try_offline_node() to remove sysfs file of node when all memory sections of this node are removed. If some memory sections of this node are not removed, this function does nothing. Signed-off-by: Wen Congyang Signed-off-by: Tang Chen Cc: KOSAKI Motohiro Cc: Jiang Liu Cc: Jianguo Wu Cc: Kamezawa Hiroyuki Cc: Lai Jiangshan Cc: Wu Jianguo Cc: Yasuaki Ishimatsu Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memory_hotplug.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index 4d523fe75ba1..69903ccf549e 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -248,7 +248,7 @@ extern int arch_add_memory(int nid, u64 start, u64 size); extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages); extern int offline_memory_block(struct memory_block *mem); extern bool is_memblock_offlined(struct memory_block *mem); -extern int remove_memory(u64 start, u64 size); +extern int remove_memory(int nid, u64 start, u64 size); extern int sparse_add_one_section(struct zone *zone, unsigned long start_pfn, int nr_pages); extern void sparse_remove_one_section(struct zone *zone, struct mem_section *ms); -- cgit v1.2.3 From 90b30cdc1d87450e2ae89c8f8a29102dc2c1992e Mon Sep 17 00:00:00 2001 From: Wen Congyang Date: Fri, 22 Feb 2013 16:33:27 -0800 Subject: memory-hotplug: export the function try_offline_node() try_offline_node() will be needed in the tristate drivers/acpi/processor_driver.c. The node will be offlined when all memory/cpu on the node have been hotremoved. So we need the function try_offline_node() in cpu-hotplug path. If the memory-hotplug is disabled, and cpu-hotplug is enabled 1. no memory no the node we don't online the node, and cpu's node is the nearest node. 2. the node contains some memory the node has been onlined, and cpu's node is still needed to migrate the sleep task on the cpu to the same node. So we do nothing in try_offline_node() in this case. [rientjes@google.com: export the function try_offline_node() fix] Signed-off-by: Wen Congyang Signed-off-by: Tang Chen Cc: Yasuaki Ishimatsu Cc: David Rientjes Cc: Jiang Liu Cc: Minchan Kim Cc: KOSAKI Motohiro Cc: Mel Gorman Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Peter Zijlstra Cc: Len Brown Signed-off-by: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memory_hotplug.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index 69903ccf549e..b6a3be7d47bf 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -233,6 +233,7 @@ static inline void unlock_memory_hotplug(void) {} #ifdef CONFIG_MEMORY_HOTREMOVE extern int is_mem_section_removable(unsigned long pfn, unsigned long nr_pages); +extern void try_offline_node(int nid); #else static inline int is_mem_section_removable(unsigned long pfn, @@ -240,6 +241,8 @@ static inline int is_mem_section_removable(unsigned long pfn, { return 0; } + +static inline void try_offline_node(int nid) {} #endif /* CONFIG_MEMORY_HOTREMOVE */ extern int mem_online_node(int nid); -- cgit v1.2.3 From 34b71f1e04fcba578e719e675b4882eeeb2a1f6f Mon Sep 17 00:00:00 2001 From: Tang Chen Date: Fri, 22 Feb 2013 16:33:37 -0800 Subject: page_alloc: add movable_memmap kernel parameter Add functions to parse movablemem_map boot option. Since the option could be specified more then once, all the maps will be stored in the global variable movablemem_map.map array. And also, we keep the array in monotonic increasing order by start_pfn. And merge all overlapped ranges. [akpm@linux-foundation.org: improve comment] [akpm@linux-foundation.org: checkpatch fixes] [akpm@linux-foundation.org: remove unneeded parens] Signed-off-by: Tang Chen Signed-off-by: Lai Jiangshan Reviewed-by: Wen Congyang Tested-by: Lin Feng Cc: Wu Jianguo Cc: Mel Gorman Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Thomas Gleixner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 9d659491c0ae..ce9bd3049836 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1359,6 +1359,17 @@ extern void free_bootmem_with_active_regions(int nid, unsigned long max_low_pfn); extern void sparse_memory_present_with_active_regions(int nid); +#define MOVABLEMEM_MAP_MAX MAX_NUMNODES +struct movablemem_entry { + unsigned long start_pfn; /* start pfn of memory segment */ + unsigned long end_pfn; /* end pfn of memory segment (exclusive) */ +}; + +struct movablemem_map { + int nr_map; + struct movablemem_entry map[MOVABLEMEM_MAP_MAX]; +}; + #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */ #if !defined(CONFIG_HAVE_MEMBLOCK_NODE_MAP) && \ -- cgit v1.2.3 From fb06bc8e5f42f38c011de0e59481f464a82380f6 Mon Sep 17 00:00:00 2001 From: Tang Chen Date: Fri, 22 Feb 2013 16:33:42 -0800 Subject: page_alloc: bootmem limit with movablecore_map Ensure the bootmem will not allocate memory from areas that may be ZONE_MOVABLE. The map info is from movablecore_map boot option. Signed-off-by: Tang Chen Reviewed-by: Wen Congyang Reviewed-by: Lai Jiangshan Tested-by: Lin Feng Cc: Wu Jianguo Cc: Mel Gorman Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Thomas Gleixner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memblock.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/memblock.h b/include/linux/memblock.h index f388203db7e8..dfefaf111c0e 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -42,6 +42,7 @@ struct memblock { extern struct memblock memblock; extern int memblock_debug; +extern struct movablemem_map movablemem_map; #define memblock_dbg(fmt, ...) \ if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) -- cgit v1.2.3 From e8d1955258091e4c92d5a975ebd7fd8a98f5d30f Mon Sep 17 00:00:00 2001 From: Tang Chen Date: Fri, 22 Feb 2013 16:33:44 -0800 Subject: acpi, memory-hotplug: parse SRAT before memblock is ready On linux, the pages used by kernel could not be migrated. As a result, if a memory range is used by kernel, it cannot be hot-removed. So if we want to hot-remove memory, we should prevent kernel from using it. The way now used to prevent this is specify a memory range by movablemem_map boot option and set it as ZONE_MOVABLE. But when the system is booting, memblock will allocate memory, and reserve the memory for kernel. And before we parse SRAT, and know the node memory ranges, memblock is working. And it may allocate memory in ranges to be set as ZONE_MOVABLE. This memory can be used by kernel, and never be freed. So, let's parse SRAT before memblock is called first. And it is early enough. The first call of memblock_find_in_range_node() is in: setup_arch() |-->setup_real_mode() so, this patch add a function early_parse_srat() to parse SRAT, and call it before setup_real_mode() is called. NOTE: 1) early_parse_srat() is called before numa_init(), and has initialized numa_meminfo. So DO NOT clear numa_nodes_parsed in numa_init() and DO NOT zero numa_meminfo in numa_init(), otherwise we will lose memory numa info. 2) I don't know why using count of memory affinities parsed from SRAT as a return value in original acpi_numa_init(). So I add a static variable srat_mem_cnt to remember this count and use it as the return value of the new acpi_numa_init() [mhocko@suse.cz: parse SRAT before memblock is ready fix] Signed-off-by: Tang Chen Reviewed-by: Wen Congyang Cc: KOSAKI Motohiro Cc: Jiang Liu Cc: Jianguo Wu Cc: Kamezawa Hiroyuki Cc: Lai Jiangshan Cc: Wu Jianguo Cc: Yasuaki Ishimatsu Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Len Brown Cc: "Brown, Len" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/acpi.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index bcbdd7484e58..f46cfd73a553 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -485,6 +485,14 @@ static inline bool acpi_driver_match_device(struct device *dev, #endif /* !CONFIG_ACPI */ +#ifdef CONFIG_ACPI_NUMA +void __init early_parse_srat(void); +#else +static inline void early_parse_srat(void) +{ +} +#endif + #ifdef CONFIG_ACPI void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state, u32 pm1a_ctrl, u32 pm1b_ctrl)); -- cgit v1.2.3 From 27168d38fa209073219abedbe6a9de7ba9acbfad Mon Sep 17 00:00:00 2001 From: Tang Chen Date: Fri, 22 Feb 2013 16:33:46 -0800 Subject: acpi, memory-hotplug: extend movablemem_map ranges to the end of node When implementing movablemem_map boot option, we introduced an array movablemem_map.map[] to store the memory ranges to be set as ZONE_MOVABLE. Since ZONE_MOVABLE is the latst zone of a node, if user didn't specify the whole node memory range, we need to extend it to the node end so that we can use it to prevent memblock from allocating memory in the ranges user didn't specify. We now implement movablemem_map boot option like this: /* * For movablemem_map=nn[KMG]@ss[KMG]: * * SRAT: |_____| |_____| |_________| |_________| ...... * node id: 0 1 1 2 * user specified: |__| |___| * movablemem_map: |___| |_________| |______| ...... * * Using movablemem_map, we can prevent memblock from allocating memory * on ZONE_MOVABLE at boot time. * * NOTE: In this case, SRAT info will be ingored. */ [akpm@linux-foundation.org: clean up code, fix build warning] Signed-off-by: Tang Chen Cc: KOSAKI Motohiro Cc: Jiang Liu Cc: Jianguo Wu Cc: Kamezawa Hiroyuki Cc: Lai Jiangshan Cc: Wu Jianguo Cc: Yasuaki Ishimatsu Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Len Brown Cc: "Brown, Len" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index ce9bd3049836..4d7377a1d084 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1368,8 +1368,13 @@ struct movablemem_entry { struct movablemem_map { int nr_map; struct movablemem_entry map[MOVABLEMEM_MAP_MAX]; + nodemask_t numa_nodes_hotplug; /* on which nodes we specify memory */ }; +extern void __init insert_movablemem_map(unsigned long start_pfn, + unsigned long end_pfn); +extern int __init movablemem_map_overlap(unsigned long start_pfn, + unsigned long end_pfn); #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */ #if !defined(CONFIG_HAVE_MEMBLOCK_NODE_MAP) && \ -- cgit v1.2.3 From 01a178a94e8eaec351b29ee49fbb3d1c124cb7fb Mon Sep 17 00:00:00 2001 From: Tang Chen Date: Fri, 22 Feb 2013 16:33:49 -0800 Subject: acpi, memory-hotplug: support getting hotplug info from SRAT We now provide an option for users who don't want to specify physical memory address in kernel commandline. /* * For movablemem_map=acpi: * * SRAT: |_____| |_____| |_________| |_________| ...... * node id: 0 1 1 2 * hotpluggable: n y y n * movablemem_map: |_____| |_________| * * Using movablemem_map, we can prevent memblock from allocating memory * on ZONE_MOVABLE at boot time. */ So user just specify movablemem_map=acpi, and the kernel will use hotpluggable info in SRAT to determine which memory ranges should be set as ZONE_MOVABLE. If all the memory ranges in SRAT is hotpluggable, then no memory can be used by kernel. But before parsing SRAT, memblock has already reserve some memory ranges for other purposes, such as for kernel image, and so on. We cannot prevent kernel from using these memory. So we need to exclude these ranges even if these memory is hotpluggable. Furthermore, there could be several memory ranges in the single node which the kernel resides in. We may skip one range that have memory reserved by memblock, but if the rest of memory is too small, then the kernel will fail to boot. So, make the whole node which the kernel resides in un-hotpluggable. Then the kernel has enough memory to use. NOTE: Using this way will cause NUMA performance down because the whole node will be set as ZONE_MOVABLE, and kernel cannot use memory on it. If users don't want to lose NUMA performance, just don't use it. [akpm@linux-foundation.org: fix warning] [akpm@linux-foundation.org: use strcmp()] Signed-off-by: Tang Chen Cc: KOSAKI Motohiro Cc: Jiang Liu Cc: Jianguo Wu Cc: Kamezawa Hiroyuki Cc: Lai Jiangshan Cc: Wu Jianguo Cc: Yasuaki Ishimatsu Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Len Brown Cc: "Brown, Len" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 4d7377a1d084..72a42c0fa633 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1366,9 +1366,11 @@ struct movablemem_entry { }; struct movablemem_map { + bool acpi; /* true if using SRAT info */ int nr_map; struct movablemem_entry map[MOVABLEMEM_MAP_MAX]; nodemask_t numa_nodes_hotplug; /* on which nodes we specify memory */ + nodemask_t numa_nodes_kernel; /* on which nodes kernel resides in */ }; extern void __init insert_movablemem_map(unsigned long start_pfn, -- cgit v1.2.3 From f7210e6c4ac795694106c1c5307134d3fc233e88 Mon Sep 17 00:00:00 2001 From: Tang Chen Date: Fri, 22 Feb 2013 16:33:51 -0800 Subject: mm/memblock.c: use CONFIG_HAVE_MEMBLOCK_NODE_MAP to protect movablecore_map in memblock_overlaps_region(). The definition of struct movablecore_map is protected by CONFIG_HAVE_MEMBLOCK_NODE_MAP but its use in memblock_overlaps_region() is not. So add CONFIG_HAVE_MEMBLOCK_NODE_MAP to protect the use of movablecore_map in memblock_overlaps_region(). Signed-off-by: Tang Chen Reported-by: Stephen Rothwell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memblock.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/memblock.h b/include/linux/memblock.h index dfefaf111c0e..3e5ecb2d790e 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -61,6 +61,7 @@ int memblock_reserve(phys_addr_t base, phys_addr_t size); void memblock_trim_memory(phys_addr_t align); #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP + void __next_mem_pfn_range(int *idx, int nid, unsigned long *out_start_pfn, unsigned long *out_end_pfn, int *out_nid); -- cgit v1.2.3 From 194159fbcc0d6ac1351837d3cd7a27a4af0219a6 Mon Sep 17 00:00:00 2001 From: Minchan Kim Date: Fri, 22 Feb 2013 16:33:58 -0800 Subject: mm: remove MIGRATE_ISOLATE check in hotpath Several functions test MIGRATE_ISOLATE and some of those are hotpath but MIGRATE_ISOLATE is used only if we enable CONFIG_MEMORY_ISOLATION(ie, CMA, memory-hotplug and memory-failure) which are not common config option. So let's not add unnecessary overhead and code when we don't enable CONFIG_MEMORY_ISOLATION. Signed-off-by: Minchan Kim Cc: KOSAKI Motohiro Acked-by: Michal Nazarewicz Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 2 ++ include/linux/page-isolation.h | 19 +++++++++++++++++++ 2 files changed, 21 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 73b64a38b984..4f4c8c26fa9d 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -57,7 +57,9 @@ enum { */ MIGRATE_CMA, #endif +#ifdef CONFIG_MEMORY_ISOLATION MIGRATE_ISOLATE, /* can't allocate from here */ +#endif MIGRATE_TYPES }; diff --git a/include/linux/page-isolation.h b/include/linux/page-isolation.h index a92061e08d48..3fff8e774067 100644 --- a/include/linux/page-isolation.h +++ b/include/linux/page-isolation.h @@ -1,6 +1,25 @@ #ifndef __LINUX_PAGEISOLATION_H #define __LINUX_PAGEISOLATION_H +#ifdef CONFIG_MEMORY_ISOLATION +static inline bool is_migrate_isolate_page(struct page *page) +{ + return get_pageblock_migratetype(page) == MIGRATE_ISOLATE; +} +static inline bool is_migrate_isolate(int migratetype) +{ + return migratetype == MIGRATE_ISOLATE; +} +#else +static inline bool is_migrate_isolate_page(struct page *page) +{ + return false; +} +static inline bool is_migrate_isolate(int migratetype) +{ + return false; +} +#endif bool has_unmovable_pages(struct zone *zone, struct page *page, int count, bool skip_hwpoisoned_pages); -- cgit v1.2.3 From 293c07e31ab5a0b8df8c19b2a9e5c6fa30308849 Mon Sep 17 00:00:00 2001 From: Xishi Qiu Date: Fri, 22 Feb 2013 16:34:02 -0800 Subject: memory-failure: use num_poisoned_pages instead of mce_bad_pages Since MCE is an x86 concept, and this code is in mm/, it would be better to use the name num_poisoned_pages instead of mce_bad_pages. [akpm@linux-foundation.org: fix mm/sparse.c] Signed-off-by: Xishi Qiu Signed-off-by: Jiang Liu Suggested-by: Borislav Petkov Reviewed-by: Wanpeng Li Cc: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 72a42c0fa633..a114b8eb7676 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1753,7 +1753,7 @@ extern int unpoison_memory(unsigned long pfn); extern int sysctl_memory_failure_early_kill; extern int sysctl_memory_failure_recovery; extern void shake_page(struct page *p, int access); -extern atomic_long_t mce_bad_pages; +extern atomic_long_t num_poisoned_pages; extern int soft_offline_page(struct page *page, int flags); extern void dump_page(struct page *page); -- cgit v1.2.3 From 258401a60c4df39332f30ef57afbc6dbf29a7e84 Mon Sep 17 00:00:00 2001 From: Zlatko Calusic Date: Fri, 22 Feb 2013 16:34:06 -0800 Subject: mm: don't wait on congested zones in balance_pgdat() From: Zlatko Calusic Commit 92df3a723f84 ("mm: vmscan: throttle reclaim if encountering too many dirty pages under writeback") introduced waiting on congested zones based on a sane algorithm in shrink_inactive_list(). What this means is that there's no more need for throttling and additional heuristics in balance_pgdat(). So, let's remove it and tidy up the code. Signed-off-by: Zlatko Calusic Cc: Mel Gorman Cc: Minchan Kim Cc: Johannes Weiner Cc: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/vm_event_item.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index fce0a2799d43..bd6cf61142be 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -36,7 +36,6 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, #endif PGINODESTEAL, SLABS_SCANNED, KSWAPD_INODESTEAL, KSWAPD_LOW_WMARK_HIT_QUICKLY, KSWAPD_HIGH_WMARK_HIT_QUICKLY, - KSWAPD_SKIP_CONGESTION_WAIT, PAGEOUTRUN, ALLOCSTALL, PGROTATED, #ifdef CONFIG_NUMA_BALANCING NUMA_PTE_UPDATES, -- cgit v1.2.3 From 21caf2fc1931b485483ddd254b634fa8f0099963 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Fri, 22 Feb 2013 16:34:08 -0800 Subject: mm: teach mm by current context info to not do I/O during memory allocation This patch introduces PF_MEMALLOC_NOIO on process flag('flags' field of 'struct task_struct'), so that the flag can be set by one task to avoid doing I/O inside memory allocation in the task's context. The patch trys to solve one deadlock problem caused by block device, and the problem may happen at least in the below situations: - during block device runtime resume, if memory allocation with GFP_KERNEL is called inside runtime resume callback of any one of its ancestors(or the block device itself), the deadlock may be triggered inside the memory allocation since it might not complete until the block device becomes active and the involed page I/O finishes. The situation is pointed out first by Alan Stern. It is not a good approach to convert all GFP_KERNEL[1] in the path into GFP_NOIO because several subsystems may be involved(for example, PCI, USB and SCSI may be involved for usb mass stoarage device, network devices involved too in the iSCSI case) - during block device runtime suspend, because runtime resume need to wait for completion of concurrent runtime suspend. - during error handling of usb mass storage deivce, USB bus reset will be put on the device, so there shouldn't have any memory allocation with GFP_KERNEL during USB bus reset, otherwise the deadlock similar with above may be triggered. Unfortunately, any usb device may include one mass storage interface in theory, so it requires all usb interface drivers to handle the situation. In fact, most usb drivers don't know how to handle bus reset on the device and don't provide .pre_set() and .post_reset() callback at all, so USB core has to unbind and bind driver for these devices. So it is still not practical to resort to GFP_NOIO for solving the problem. Also the introduced solution can be used by block subsystem or block drivers too, for example, set the PF_MEMALLOC_NOIO flag before doing actual I/O transfer. It is not a good idea to convert all these GFP_KERNEL in the affected path into GFP_NOIO because these functions doing that may be implemented as library and will be called in many other contexts. In fact, memalloc_noio_flags() can convert some of current static GFP_NOIO allocation into GFP_KERNEL back in other non-affected contexts, at least almost all GFP_NOIO in USB subsystem can be converted into GFP_KERNEL after applying the approach and make allocation with GFP_NOIO only happen in runtime resume/bus reset/block I/O transfer contexts generally. [1], several GFP_KERNEL allocation examples in runtime resume path - pci subsystem acpi_os_allocate <-acpi_ut_allocate <-ACPI_ALLOCATE_ZEROED <-acpi_evaluate_object <-__acpi_bus_set_power <-acpi_bus_set_power <-acpi_pci_set_power_state <-platform_pci_set_power_state <-pci_platform_power_transition <-__pci_complete_power_transition <-pci_set_power_state <-pci_restore_standard_config <-pci_pm_runtime_resume - usb subsystem usb_get_status <-finish_port_resume <-usb_port_resume <-generic_resume <-usb_resume_device <-usb_resume_both <-usb_runtime_resume - some individual usb drivers usblp, uvc, gspca, most of dvb-usb-v2 media drivers, cpia2, az6007, .... That is just what I have found. Unfortunately, this allocation can only be found by human being now, and there should be many not found since any function in the resume path(call tree) may allocate memory with GFP_KERNEL. Signed-off-by: Ming Lei Signed-off-by: Minchan Kim Cc: Alan Stern Cc: Oliver Neukum Cc: Jiri Kosina Cc: Mel Gorman Cc: KAMEZAWA Hiroyuki Cc: Michal Hocko Cc: Ingo Molnar Cc: Peter Zijlstra Cc: "Rafael J. Wysocki" Cc: Greg KH Cc: Jens Axboe Cc: "David S. Miller" Cc: Eric Dumazet Cc: David Decotigny Cc: Tom Herbert Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sched.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index e4112aad2964..c2182b53dace 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -51,6 +51,7 @@ struct sched_param { #include #include #include +#include #include @@ -1791,6 +1792,7 @@ extern void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut, #define PF_FROZEN 0x00010000 /* frozen for system suspend */ #define PF_FSTRANS 0x00020000 /* inside a filesystem transaction */ #define PF_KSWAPD 0x00040000 /* I am kswapd */ +#define PF_MEMALLOC_NOIO 0x00080000 /* Allocating memory without IO involved */ #define PF_LESS_THROTTLE 0x00100000 /* Throttle me less: I clean memory */ #define PF_KTHREAD 0x00200000 /* I am a kernel thread */ #define PF_RANDOMIZE 0x00400000 /* randomize virtual address space */ @@ -1828,6 +1830,26 @@ extern void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut, #define tsk_used_math(p) ((p)->flags & PF_USED_MATH) #define used_math() tsk_used_math(current) +/* __GFP_IO isn't allowed if PF_MEMALLOC_NOIO is set in current->flags */ +static inline gfp_t memalloc_noio_flags(gfp_t flags) +{ + if (unlikely(current->flags & PF_MEMALLOC_NOIO)) + flags &= ~__GFP_IO; + return flags; +} + +static inline unsigned int memalloc_noio_save(void) +{ + unsigned int flags = current->flags & PF_MEMALLOC_NOIO; + current->flags |= PF_MEMALLOC_NOIO; + return flags; +} + +static inline void memalloc_noio_restore(unsigned int flags) +{ + current->flags = (current->flags & ~PF_MEMALLOC_NOIO) | flags; +} + /* * task->jobctl flags */ -- cgit v1.2.3 From e823407f7b11fa06ba8e7a2801eb9ed11268a7ec Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Fri, 22 Feb 2013 16:34:11 -0800 Subject: pm / runtime: introduce pm_runtime_set_memalloc_noio() Introduce the flag memalloc_noio in 'struct dev_pm_info' to help PM core to teach mm not allocating memory with GFP_KERNEL flag for avoiding probable deadlock. As explained in the comment, any GFP_KERNEL allocation inside runtime_resume() or runtime_suspend() on any one of device in the path from one block or network device to the root device in the device tree may cause deadlock, the introduced pm_runtime_set_memalloc_noio() sets or clears the flag on device in the path recursively. Signed-off-by: Ming Lei Cc: Minchan Kim Cc: Alan Stern Cc: Oliver Neukum Cc: Jiri Kosina Cc: Mel Gorman Cc: KAMEZAWA Hiroyuki Cc: Michal Hocko Cc: Ingo Molnar Cc: Peter Zijlstra Cc: "Rafael J. Wysocki" Cc: Greg KH Cc: Jens Axboe Cc: "David S. Miller" Cc: Eric Dumazet Cc: David Decotigny Cc: Tom Herbert Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pm.h | 1 + include/linux/pm_runtime.h | 3 +++ 2 files changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pm.h b/include/linux/pm.h index 97bcf23e045a..e5d7230332a4 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -537,6 +537,7 @@ struct dev_pm_info { unsigned int irq_safe:1; unsigned int use_autosuspend:1; unsigned int timer_autosuspends:1; + unsigned int memalloc_noio:1; enum rpm_request request; enum rpm_status runtime_status; int runtime_error; diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index c785c215abfc..7d7e09efff9b 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -47,6 +47,7 @@ extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay); extern unsigned long pm_runtime_autosuspend_expiration(struct device *dev); extern void pm_runtime_update_max_time_suspended(struct device *dev, s64 delta_ns); +extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable); static inline bool pm_children_suspended(struct device *dev) { @@ -156,6 +157,8 @@ static inline void pm_runtime_set_autosuspend_delay(struct device *dev, int delay) {} static inline unsigned long pm_runtime_autosuspend_expiration( struct device *dev) { return 0; } +static inline void pm_runtime_set_memalloc_noio(struct device *dev, + bool enable){} #endif /* !CONFIG_PM_RUNTIME */ -- cgit v1.2.3 From cf82f3489cf414fe27c6c5af2b372fdcd2a58b24 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Fri, 22 Feb 2013 16:34:24 -0800 Subject: mm: remove unused memclear_highpage_flush() Signed-off-by: Kirill A. Shutemov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/highmem.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/highmem.h b/include/linux/highmem.h index ef788b5b4a35..7fb31da45d03 100644 --- a/include/linux/highmem.h +++ b/include/linux/highmem.h @@ -219,12 +219,6 @@ static inline void zero_user(struct page *page, zero_user_segments(page, start, start + size, 0, 0); } -static inline void __deprecated memclear_highpage_flush(struct page *page, - unsigned int offset, unsigned int size) -{ - zero_user(page, offset, size); -} - #ifndef __HAVE_ARCH_COPY_USER_HIGHPAGE static inline void copy_user_highpage(struct page *to, struct page *from, -- cgit v1.2.3 From 34f0315adb58af3b01f59d05b2bce267474e71cb Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Fri, 22 Feb 2013 16:34:25 -0800 Subject: mm: numa: fix minor typo in numa_next_scan s/me/be/ and clarify the comment a bit when we're changing it anyway. Signed-off-by: Mel Gorman Suggested-by: Simon Jeons Cc: Peter Zijlstra Cc: Andrea Arcangeli Cc: Ingo Molnar Cc: Wanpeng Li Cc: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm_types.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index f8f5162a3571..47047cb4d8e5 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -414,9 +414,9 @@ struct mm_struct { #endif #ifdef CONFIG_NUMA_BALANCING /* - * numa_next_scan is the next time when the PTEs will me marked - * pte_numa to gather statistics and migrate pages to new nodes - * if necessary + * numa_next_scan is the next time that the PTEs will be marked + * pte_numa. NUMA hinting faults will gather statistics and migrate + * pages to new nodes if necessary. */ unsigned long numa_next_scan; -- cgit v1.2.3 From 3c0ff4689630b280704666833e9539d84cddc373 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Fri, 22 Feb 2013 16:34:29 -0800 Subject: mm: numa: handle side-effects in count_vm_numa_events() for !CONFIG_NUMA_BALANCING The current definitions for count_vm_numa_events() is wrong for !CONFIG_NUMA_BALANCING as the following would miss the side-effect. count_vm_numa_events(NUMA_FOO, bar++); There are no such users of count_vm_numa_events() but this patch fixes it as it is a potential pitfall. Ideally both would be converted to static inline but NUMA_PTE_UPDATES is not defined if !CONFIG_NUMA_BALANCING and creating dummy constants just to have a static inline would be similarly clumsy. Signed-off-by: Mel Gorman Cc: Peter Zijlstra Cc: Andrea Arcangeli Cc: Ingo Molnar Cc: Simon Jeons Cc: Wanpeng Li Cc: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/vmstat.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index a13291f7da88..5fd71a7d0dfd 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -85,7 +85,7 @@ static inline void vm_events_fold_cpu(int cpu) #define count_vm_numa_events(x, y) count_vm_events(x, y) #else #define count_vm_numa_event(x) do {} while (0) -#define count_vm_numa_events(x, y) do {} while (0) +#define count_vm_numa_events(x, y) do { (void)(y); } while (0) #endif /* CONFIG_NUMA_BALANCING */ #define __count_zone_vm_events(item, zone, delta) \ -- cgit v1.2.3 From bbeae5b05ef6e40bf54db05ceb8635824153b9e2 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Fri, 22 Feb 2013 16:34:30 -0800 Subject: mm: move page flags layout to separate header This is a preparation patch for moving page->_last_nid into page->flags that moves page flag layout information to a separate header. This patch is necessary because otherwise there would be a circular dependency between mm_types.h and mm.h. Signed-off-by: Mel Gorman Cc: Peter Zijlstra Cc: Andrea Arcangeli Cc: Ingo Molnar Cc: Simon Jeons Cc: Wanpeng Li Cc: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 40 ---------------------- include/linux/mm_types.h | 1 + include/linux/mmzone.h | 22 +----------- include/linux/page-flags-layout.h | 71 +++++++++++++++++++++++++++++++++++++++ 4 files changed, 73 insertions(+), 61 deletions(-) create mode 100644 include/linux/page-flags-layout.h (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index a114b8eb7676..c2d7d5993b14 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -581,51 +581,11 @@ static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma) * sets it, so none of the operations on it need to be atomic. */ - -/* - * page->flags layout: - * - * There are three possibilities for how page->flags get - * laid out. The first is for the normal case, without - * sparsemem. The second is for sparsemem when there is - * plenty of space for node and section. The last is when - * we have run out of space and have to fall back to an - * alternate (slower) way of determining the node. - * - * No sparsemem or sparsemem vmemmap: | NODE | ZONE | ... | FLAGS | - * classic sparse with space for node:| SECTION | NODE | ZONE | ... | FLAGS | - * classic sparse no space for node: | SECTION | ZONE | ... | FLAGS | - */ -#if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP) -#define SECTIONS_WIDTH SECTIONS_SHIFT -#else -#define SECTIONS_WIDTH 0 -#endif - -#define ZONES_WIDTH ZONES_SHIFT - -#if SECTIONS_WIDTH+ZONES_WIDTH+NODES_SHIFT <= BITS_PER_LONG - NR_PAGEFLAGS -#define NODES_WIDTH NODES_SHIFT -#else -#ifdef CONFIG_SPARSEMEM_VMEMMAP -#error "Vmemmap: No space for nodes field in page flags" -#endif -#define NODES_WIDTH 0 -#endif - /* Page flags: | [SECTION] | [NODE] | ZONE | ... | FLAGS | */ #define SECTIONS_PGOFF ((sizeof(unsigned long)*8) - SECTIONS_WIDTH) #define NODES_PGOFF (SECTIONS_PGOFF - NODES_WIDTH) #define ZONES_PGOFF (NODES_PGOFF - ZONES_WIDTH) -/* - * We are going to use the flags for the page to node mapping if its in - * there. This includes the case where there is no node, so it is implicit. - */ -#if !(NODES_WIDTH > 0 || NODES_SHIFT == 0) -#define NODE_NOT_IN_PAGE_FLAGS -#endif - /* * Define the bit shifts to access each section. For non-existent * sections we define the shift as 0; that plus a 0 mask ensures diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 47047cb4d8e5..d05d632c716e 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -12,6 +12,7 @@ #include #include #include +#include #include #include diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 4f4c8c26fa9d..6c80d0ac14dd 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -15,7 +15,7 @@ #include #include #include -#include +#include #include #include @@ -310,24 +310,6 @@ enum zone_type { #ifndef __GENERATING_BOUNDS_H -/* - * When a memory allocation must conform to specific limitations (such - * as being suitable for DMA) the caller will pass in hints to the - * allocator in the gfp_mask, in the zone modifier bits. These bits - * are used to select a priority ordered list of memory zones which - * match the requested limits. See gfp_zone() in include/linux/gfp.h - */ - -#if MAX_NR_ZONES < 2 -#define ZONES_SHIFT 0 -#elif MAX_NR_ZONES <= 2 -#define ZONES_SHIFT 1 -#elif MAX_NR_ZONES <= 4 -#define ZONES_SHIFT 2 -#else -#error ZONES_SHIFT -- too many zones configured adjust calculation -#endif - struct zone { /* Fields commonly accessed by the page allocator */ @@ -1055,8 +1037,6 @@ static inline unsigned long early_pfn_to_nid(unsigned long pfn) * PA_SECTION_SHIFT physical address to/from section number * PFN_SECTION_SHIFT pfn to/from section number */ -#define SECTIONS_SHIFT (MAX_PHYSMEM_BITS - SECTION_SIZE_BITS) - #define PA_SECTION_SHIFT (SECTION_SIZE_BITS) #define PFN_SECTION_SHIFT (SECTION_SIZE_BITS - PAGE_SHIFT) diff --git a/include/linux/page-flags-layout.h b/include/linux/page-flags-layout.h new file mode 100644 index 000000000000..316805d6ba1b --- /dev/null +++ b/include/linux/page-flags-layout.h @@ -0,0 +1,71 @@ +#ifndef PAGE_FLAGS_LAYOUT_H +#define PAGE_FLAGS_LAYOUT_H + +#include +#include + +/* + * When a memory allocation must conform to specific limitations (such + * as being suitable for DMA) the caller will pass in hints to the + * allocator in the gfp_mask, in the zone modifier bits. These bits + * are used to select a priority ordered list of memory zones which + * match the requested limits. See gfp_zone() in include/linux/gfp.h + */ +#if MAX_NR_ZONES < 2 +#define ZONES_SHIFT 0 +#elif MAX_NR_ZONES <= 2 +#define ZONES_SHIFT 1 +#elif MAX_NR_ZONES <= 4 +#define ZONES_SHIFT 2 +#else +#error ZONES_SHIFT -- too many zones configured adjust calculation +#endif + +#ifdef CONFIG_SPARSEMEM +#include + +/* SECTION_SHIFT #bits space required to store a section # */ +#define SECTIONS_SHIFT (MAX_PHYSMEM_BITS - SECTION_SIZE_BITS) + +#endif /* CONFIG_SPARSEMEM */ + +/* + * page->flags layout: + * + * There are three possibilities for how page->flags get + * laid out. The first is for the normal case, without + * sparsemem. The second is for sparsemem when there is + * plenty of space for node and section. The last is when + * we have run out of space and have to fall back to an + * alternate (slower) way of determining the node. + * + * No sparsemem or sparsemem vmemmap: | NODE | ZONE | ... | FLAGS | + * classic sparse with space for node:| SECTION | NODE | ZONE | ... | FLAGS | + * classic sparse no space for node: | SECTION | ZONE | ... | FLAGS | + */ +#if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP) +#define SECTIONS_WIDTH SECTIONS_SHIFT +#else +#define SECTIONS_WIDTH 0 +#endif + +#define ZONES_WIDTH ZONES_SHIFT + +#if SECTIONS_WIDTH+ZONES_WIDTH+NODES_SHIFT <= BITS_PER_LONG - NR_PAGEFLAGS +#define NODES_WIDTH NODES_SHIFT +#else +#ifdef CONFIG_SPARSEMEM_VMEMMAP +#error "Vmemmap: No space for nodes field in page flags" +#endif +#define NODES_WIDTH 0 +#endif + +/* + * We are going to use the flags for the page to node mapping if its in + * there. This includes the case where there is no node, so it is implicit. + */ +#if !(NODES_WIDTH > 0 || NODES_SHIFT == 0) +#define NODE_NOT_IN_PAGE_FLAGS +#endif + +#endif /* _LINUX_PAGE_FLAGS_LAYOUT */ -- cgit v1.2.3 From 75980e97daccfc6babbac7e180ff118537955f5d Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Fri, 22 Feb 2013 16:34:32 -0800 Subject: mm: fold page->_last_nid into page->flags where possible page->_last_nid fits into page->flags on 64-bit. The unlikely 32-bit NUMA configuration with NUMA Balancing will still need an extra page field. As Peter notes "Completely dropping 32bit support for CONFIG_NUMA_BALANCING would simplify things, but it would also remove the warning if we grow enough 64bit only page-flags to push the last-cpu out." [mgorman@suse.de: minor modifications] Signed-off-by: Mel Gorman Cc: Peter Zijlstra Cc: Andrea Arcangeli Cc: Ingo Molnar Cc: Simon Jeons Cc: Wanpeng Li Cc: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 33 ++++++++++++++++++++++++++++++++- include/linux/mm_types.h | 2 +- include/linux/page-flags-layout.h | 33 +++++++++++++++++++++++++-------- 3 files changed, 58 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index c2d7d5993b14..473abbda942e 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -581,10 +581,11 @@ static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma) * sets it, so none of the operations on it need to be atomic. */ -/* Page flags: | [SECTION] | [NODE] | ZONE | ... | FLAGS | */ +/* Page flags: | [SECTION] | [NODE] | ZONE | [LAST_NID] | ... | FLAGS | */ #define SECTIONS_PGOFF ((sizeof(unsigned long)*8) - SECTIONS_WIDTH) #define NODES_PGOFF (SECTIONS_PGOFF - NODES_WIDTH) #define ZONES_PGOFF (NODES_PGOFF - ZONES_WIDTH) +#define LAST_NID_PGOFF (ZONES_PGOFF - LAST_NID_WIDTH) /* * Define the bit shifts to access each section. For non-existent @@ -594,6 +595,7 @@ static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma) #define SECTIONS_PGSHIFT (SECTIONS_PGOFF * (SECTIONS_WIDTH != 0)) #define NODES_PGSHIFT (NODES_PGOFF * (NODES_WIDTH != 0)) #define ZONES_PGSHIFT (ZONES_PGOFF * (ZONES_WIDTH != 0)) +#define LAST_NID_PGSHIFT (LAST_NID_PGOFF * (LAST_NID_WIDTH != 0)) /* NODE:ZONE or SECTION:ZONE is used to ID a zone for the buddy allocator */ #ifdef NODE_NOT_IN_PAGE_FLAGS @@ -615,6 +617,7 @@ static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma) #define ZONES_MASK ((1UL << ZONES_WIDTH) - 1) #define NODES_MASK ((1UL << NODES_WIDTH) - 1) #define SECTIONS_MASK ((1UL << SECTIONS_WIDTH) - 1) +#define LAST_NID_MASK ((1UL << LAST_NID_WIDTH) - 1) #define ZONEID_MASK ((1UL << ZONEID_SHIFT) - 1) static inline enum zone_type page_zonenum(const struct page *page) @@ -654,6 +657,7 @@ static inline int page_to_nid(const struct page *page) #endif #ifdef CONFIG_NUMA_BALANCING +#ifdef LAST_NID_NOT_IN_PAGE_FLAGS static inline int page_xchg_last_nid(struct page *page, int nid) { return xchg(&page->_last_nid, nid); @@ -668,6 +672,33 @@ static inline void reset_page_last_nid(struct page *page) page->_last_nid = -1; } #else +static inline int page_last_nid(struct page *page) +{ + return (page->flags >> LAST_NID_PGSHIFT) & LAST_NID_MASK; +} + +static inline int page_xchg_last_nid(struct page *page, int nid) +{ + unsigned long old_flags, flags; + int last_nid; + + do { + old_flags = flags = page->flags; + last_nid = page_last_nid(page); + + flags &= ~(LAST_NID_MASK << LAST_NID_PGSHIFT); + flags |= (nid & LAST_NID_MASK) << LAST_NID_PGSHIFT; + } while (unlikely(cmpxchg(&page->flags, old_flags, flags) != old_flags)); + + return last_nid; +} + +static inline void reset_page_last_nid(struct page *page) +{ + page_xchg_last_nid(page, (1 << LAST_NID_SHIFT) - 1); +} +#endif /* LAST_NID_NOT_IN_PAGE_FLAGS */ +#else static inline int page_xchg_last_nid(struct page *page, int nid) { return page_to_nid(page); diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index d05d632c716e..ace9a5f01c64 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -174,7 +174,7 @@ struct page { void *shadow; #endif -#ifdef CONFIG_NUMA_BALANCING +#ifdef LAST_NID_NOT_IN_PAGE_FLAGS int _last_nid; #endif } diff --git a/include/linux/page-flags-layout.h b/include/linux/page-flags-layout.h index 316805d6ba1b..93506a114034 100644 --- a/include/linux/page-flags-layout.h +++ b/include/linux/page-flags-layout.h @@ -32,15 +32,16 @@ /* * page->flags layout: * - * There are three possibilities for how page->flags get - * laid out. The first is for the normal case, without - * sparsemem. The second is for sparsemem when there is - * plenty of space for node and section. The last is when - * we have run out of space and have to fall back to an - * alternate (slower) way of determining the node. + * There are five possibilities for how page->flags get laid out. The first + * pair is for the normal case without sparsemem. The second pair is for + * sparsemem when there is plenty of space for node and section information. + * The last is when there is insufficient space in page->flags and a separate + * lookup is necessary. * - * No sparsemem or sparsemem vmemmap: | NODE | ZONE | ... | FLAGS | - * classic sparse with space for node:| SECTION | NODE | ZONE | ... | FLAGS | + * No sparsemem or sparsemem vmemmap: | NODE | ZONE | ... | FLAGS | + * " plus space for last_nid: | NODE | ZONE | LAST_NID ... | FLAGS | + * classic sparse with space for node:| SECTION | NODE | ZONE | ... | FLAGS | + * " plus space for last_nid: | SECTION | NODE | ZONE | LAST_NID ... | FLAGS | * classic sparse no space for node: | SECTION | ZONE | ... | FLAGS | */ #if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP) @@ -60,6 +61,18 @@ #define NODES_WIDTH 0 #endif +#ifdef CONFIG_NUMA_BALANCING +#define LAST_NID_SHIFT NODES_SHIFT +#else +#define LAST_NID_SHIFT 0 +#endif + +#if SECTIONS_WIDTH+ZONES_WIDTH+NODES_SHIFT+LAST_NID_SHIFT <= BITS_PER_LONG - NR_PAGEFLAGS +#define LAST_NID_WIDTH LAST_NID_SHIFT +#else +#define LAST_NID_WIDTH 0 +#endif + /* * We are going to use the flags for the page to node mapping if its in * there. This includes the case where there is no node, so it is implicit. @@ -68,4 +81,8 @@ #define NODE_NOT_IN_PAGE_FLAGS #endif +#if defined(CONFIG_NUMA_BALANCING) && LAST_NID_WIDTH == 0 +#define LAST_NID_NOT_IN_PAGE_FLAGS +#endif + #endif /* _LINUX_PAGE_FLAGS_LAYOUT */ -- cgit v1.2.3 From 9800339b5e0f0e24ab3dac349e0de80d2018832e Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Fri, 22 Feb 2013 16:34:35 -0800 Subject: mm: don't inline page_mapping() According to akpm, this saves 1/2k text and makes things simple for the next patch. Numbers from Minchan: add/remove: 1/0 grow/shrink: 6/22 up/down: 92/-516 (-424) function old new delta page_mapping - 48 +48 do_task_stat 2292 2308 +16 page_remove_rmap 240 248 +8 load_elf_binary 4500 4508 +8 update_queue 532 536 +4 scsi_probe_and_add_lun 2892 2896 +4 lookup_fast 644 648 +4 vcs_read 1040 1036 -4 __ip_route_output_key 1904 1900 -4 ip_route_input_noref 2508 2500 -8 shmem_file_aio_read 784 772 -12 __isolate_lru_page 272 256 -16 shmem_replace_page 708 688 -20 mark_buffer_dirty 228 208 -20 __set_page_dirty_buffers 240 220 -20 __remove_mapping 276 256 -20 update_mmu_cache 500 476 -24 set_page_dirty_balance 92 68 -24 set_page_dirty 172 148 -24 page_evictable 88 64 -24 page_cache_pipe_buf_steal 248 224 -24 clear_page_dirty_for_io 340 316 -24 test_set_page_writeback 400 372 -28 test_clear_page_writeback 516 488 -28 invalidate_inode_page 156 128 -28 page_mkclean 432 400 -32 flush_dcache_page 360 328 -32 __set_page_dirty_nobuffers 324 280 -44 shrink_page_list 2412 2356 -56 Signed-off-by: Shaohua Li Suggested-by: Andrew Morton Cc: Hugh Dickins Acked-by: Rik van Riel Cc: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 473abbda942e..1d4122bf6f27 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -809,18 +809,7 @@ void page_address_init(void); #define PAGE_MAPPING_KSM 2 #define PAGE_MAPPING_FLAGS (PAGE_MAPPING_ANON | PAGE_MAPPING_KSM) -extern struct address_space swapper_space; -static inline struct address_space *page_mapping(struct page *page) -{ - struct address_space *mapping = page->mapping; - - VM_BUG_ON(PageSlab(page)); - if (unlikely(PageSwapCache(page))) - mapping = &swapper_space; - else if ((unsigned long)mapping & PAGE_MAPPING_ANON) - mapping = NULL; - return mapping; -} +extern struct address_space *page_mapping(struct page *page); /* Neutral page->mapping pointer to address_space or anon_vma or other */ static inline void *page_rmapping(struct page *page) -- cgit v1.2.3 From 33806f06da654092182410d974b6d3c5396ea3eb Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Fri, 22 Feb 2013 16:34:37 -0800 Subject: swap: make each swap partition have one address_space When I use several fast SSD to do swap, swapper_space.tree_lock is heavily contended. This makes each swap partition have one address_space to reduce the lock contention. There is an array of address_space for swap. The swap entry type is the index to the array. In my test with 3 SSD, this increases the swapout throughput 20%. [akpm@linux-foundation.org: revert unneeded change to __add_to_swap_cache] Signed-off-by: Shaohua Li Cc: Hugh Dickins Acked-by: Rik van Riel Acked-by: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/swap.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/swap.h b/include/linux/swap.h index 8c66486a8ca8..235c039892ee 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -8,7 +8,7 @@ #include #include #include - +#include #include #include @@ -330,8 +330,9 @@ int generic_swapfile_activate(struct swap_info_struct *, struct file *, sector_t *); /* linux/mm/swap_state.c */ -extern struct address_space swapper_space; -#define total_swapcache_pages swapper_space.nrpages +extern struct address_space swapper_spaces[]; +#define swap_address_space(entry) (&swapper_spaces[swp_type(entry)]) +extern unsigned long total_swapcache_pages(void); extern void show_swap_cache_info(void); extern int add_to_swap(struct page *); extern int add_to_swap_cache(struct page *, swp_entry_t, gfp_t); @@ -382,7 +383,7 @@ mem_cgroup_uncharge_swapcache(struct page *page, swp_entry_t ent, bool swapout) #define nr_swap_pages 0L #define total_swap_pages 0L -#define total_swapcache_pages 0UL +#define total_swapcache_pages() 0UL #define si_swapinfo(val) \ do { (val)->freeswap = (val)->totalswap = 0; } while (0) -- cgit v1.2.3 From ec8acf20afb8534ed511f6613dd2226b9e301010 Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Fri, 22 Feb 2013 16:34:38 -0800 Subject: swap: add per-partition lock for swapfile swap_lock is heavily contended when I test swap to 3 fast SSD (even slightly slower than swap to 2 such SSD). The main contention comes from swap_info_get(). This patch tries to fix the gap with adding a new per-partition lock. Global data like nr_swapfiles, total_swap_pages, least_priority and swap_list are still protected by swap_lock. nr_swap_pages is an atomic now, it can be changed without swap_lock. In theory, it's possible get_swap_page() finds no swap pages but actually there are free swap pages. But sounds not a big problem. Accessing partition specific data (like scan_swap_map and so on) is only protected by swap_info_struct.lock. Changing swap_info_struct.flags need hold swap_lock and swap_info_struct.lock, because scan_scan_map() will check it. read the flags is ok with either the locks hold. If both swap_lock and swap_info_struct.lock must be hold, we always hold the former first to avoid deadlock. swap_entry_free() can change swap_list. To delete that code, we add a new highest_priority_index. Whenever get_swap_page() is called, we check it. If it's valid, we use it. It's a pity get_swap_page() still holds swap_lock(). But in practice, swap_lock() isn't heavily contended in my test with this patch (or I can say there are other much more heavier bottlenecks like TLB flush). And BTW, looks get_swap_page() doesn't really need the lock. We never free swap_info[] and we check SWAP_WRITEOK flag. The only risk without the lock is we could swapout to some low priority swap, but we can quickly recover after several rounds of swap, so sounds not a big deal to me. But I'd prefer to fix this if it's a real problem. "swap: make each swap partition have one address_space" improved the swapout speed from 1.7G/s to 2G/s. This patch further improves the speed to 2.3G/s, so around 15% improvement. It's a multi-process test, so TLB flush isn't the biggest bottleneck before the patches. [arnd@arndb.de: fix it for nommu] [hughd@google.com: add missing unlock] [minchan@kernel.org: get rid of lockdep whinge on sys_swapon] Signed-off-by: Shaohua Li Cc: Hugh Dickins Cc: Rik van Riel Cc: Minchan Kim Cc: Greg Kroah-Hartman Cc: Seth Jennings Cc: Konrad Rzeszutek Wilk Cc: Xiao Guangrong Cc: Dan Magenheimer Cc: Stephen Rothwell Signed-off-by: Arnd Bergmann Signed-off-by: Hugh Dickins Signed-off-by: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/swap.h | 32 +++++++++++++++++++++++++++----- 1 file changed, 27 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/swap.h b/include/linux/swap.h index 235c039892ee..a3e22d357e91 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -202,6 +202,18 @@ struct swap_info_struct { unsigned long *frontswap_map; /* frontswap in-use, one bit per page */ atomic_t frontswap_pages; /* frontswap pages in-use counter */ #endif + spinlock_t lock; /* + * protect map scan related fields like + * swap_map, lowest_bit, highest_bit, + * inuse_pages, cluster_next, + * cluster_nr, lowest_alloc and + * highest_alloc. other fields are only + * changed at swapon/swapoff, so are + * protected by swap_lock. changing + * flags need hold this lock and + * swap_lock. If both locks need hold, + * hold swap_lock first. + */ }; struct swap_list_t { @@ -209,9 +221,6 @@ struct swap_list_t { int next; /* swapfile to be used next */ }; -/* Swap 50% full? Release swapcache more aggressively.. */ -#define vm_swap_full() (nr_swap_pages*2 < total_swap_pages) - /* linux/mm/page_alloc.c */ extern unsigned long totalram_pages; extern unsigned long totalreserve_pages; @@ -347,8 +356,20 @@ extern struct page *swapin_readahead(swp_entry_t, gfp_t, struct vm_area_struct *vma, unsigned long addr); /* linux/mm/swapfile.c */ -extern long nr_swap_pages; +extern atomic_long_t nr_swap_pages; extern long total_swap_pages; + +/* Swap 50% full? Release swapcache more aggressively.. */ +static inline bool vm_swap_full(void) +{ + return atomic_long_read(&nr_swap_pages) * 2 < total_swap_pages; +} + +static inline long get_nr_swap_pages(void) +{ + return atomic_long_read(&nr_swap_pages); +} + extern void si_swapinfo(struct sysinfo *); extern swp_entry_t get_swap_page(void); extern swp_entry_t get_swap_page_of_type(int); @@ -381,9 +402,10 @@ mem_cgroup_uncharge_swapcache(struct page *page, swp_entry_t ent, bool swapout) #else /* CONFIG_SWAP */ -#define nr_swap_pages 0L +#define get_nr_swap_pages() 0L #define total_swap_pages 0L #define total_swapcache_pages() 0UL +#define vm_swap_full() 0 #define si_swapinfo(val) \ do { (val)->freeswap = (val)->totalswap = 0; } while (0) -- cgit v1.2.3 From 08b52706d505658eac0962d215ff697f898bbc13 Mon Sep 17 00:00:00 2001 From: Konstantin Khlebnikov Date: Fri, 22 Feb 2013 16:34:40 -0800 Subject: mm/rmap: rename anon_vma_unlock() => anon_vma_unlock_write() The comment in commit 4fc3f1d66b1e ("mm/rmap, migration: Make rmap_walk_anon() and try_to_unmap_anon() more scalable") says: | Rename anon_vma_[un]lock() => anon_vma_[un]lock_write(), | to make it clearer that it's an exclusive write-lock in | that case - suggested by Rik van Riel. But that commit renames only anon_vma_lock() Signed-off-by: Konstantin Khlebnikov Cc: Ingo Molnar Reviewed-by: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/huge_mm.h | 2 +- include/linux/rmap.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 1d76f8ca90f0..ee1c244a62a1 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -113,7 +113,7 @@ extern void __split_huge_page_pmd(struct vm_area_struct *vma, do { \ pmd_t *____pmd = (__pmd); \ anon_vma_lock_write(__anon_vma); \ - anon_vma_unlock(__anon_vma); \ + anon_vma_unlock_write(__anon_vma); \ BUG_ON(pmd_trans_splitting(*____pmd) || \ pmd_trans_huge(*____pmd)); \ } while (0) diff --git a/include/linux/rmap.h b/include/linux/rmap.h index c20635c527a9..6dacb93a6d94 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -123,7 +123,7 @@ static inline void anon_vma_lock_write(struct anon_vma *anon_vma) down_write(&anon_vma->root->rwsem); } -static inline void anon_vma_unlock(struct anon_vma *anon_vma) +static inline void anon_vma_unlock_write(struct anon_vma *anon_vma) { up_write(&anon_vma->root->rwsem); } -- cgit v1.2.3 From 75f7ad8e043d9383337d917584297f7737154bbf Mon Sep 17 00:00:00 2001 From: Paul Szabo Date: Fri, 22 Feb 2013 16:34:42 -0800 Subject: page-writeback.c: subtract min_free_kbytes from dirtyable memory When calculating amount of dirtyable memory, min_free_kbytes should be subtracted because it is not intended for dirty pages. Addresses http://bugs.debian.org/695182 [akpm@linux-foundation.org: fix up min_free_kbytes extern declarations] [akpm@linux-foundation.org: fix min() warning] Signed-off-by: Paul Szabo Acked-by: Rik van Riel Cc: Wu Fengguang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 1d4122bf6f27..437da0ce78c7 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1393,6 +1393,9 @@ extern void setup_per_cpu_pageset(void); extern void zone_pcp_update(struct zone *zone); extern void zone_pcp_reset(struct zone *zone); +/* page_alloc.c */ +extern int min_free_kbytes; + /* nommu.c */ extern atomic_long_t mmap_pages_allocated; extern int nommu_shrink_inode_mappings(struct inode *, size_t, size_t); -- cgit v1.2.3 From 4468b8f1e2d32ce79ef4bcb8e00d7e88627f1c3a Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Fri, 22 Feb 2013 16:34:46 -0800 Subject: mm: uninline page_xchg_last_nid() Andrew Morton pointed out that page_xchg_last_nid() and reset_page_last_nid() were "getting nuttily large" and asked that it be investigated. reset_page_last_nid() is on the page free path and it would be unfortunate to make that path more expensive than it needs to be. Due to the internal use of page_xchg_last_nid() it is already too expensive but fortunately, it should also be impossible for the page->flags to be updated in parallel when we call reset_page_last_nid(). Instead of unlining the function, it uses a simplier implementation that assumes no parallel updates and should now be sufficiently short for inlining. page_xchg_last_nid() is called in paths that are already quite expensive (splitting huge page, fault handling, migration) and it is reasonable to uninline. There was not really a good place to place the function but mm/mmzone.c was the closest fit IMO. This patch saved 128 bytes of text in the vmlinux file for the kernel configuration I used for testing automatic NUMA balancing. Signed-off-by: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 21 +++++---------------- 1 file changed, 5 insertions(+), 16 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 437da0ce78c7..8a5bbe3b9e56 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -677,25 +677,14 @@ static inline int page_last_nid(struct page *page) return (page->flags >> LAST_NID_PGSHIFT) & LAST_NID_MASK; } -static inline int page_xchg_last_nid(struct page *page, int nid) -{ - unsigned long old_flags, flags; - int last_nid; - - do { - old_flags = flags = page->flags; - last_nid = page_last_nid(page); - - flags &= ~(LAST_NID_MASK << LAST_NID_PGSHIFT); - flags |= (nid & LAST_NID_MASK) << LAST_NID_PGSHIFT; - } while (unlikely(cmpxchg(&page->flags, old_flags, flags) != old_flags)); - - return last_nid; -} +extern int page_xchg_last_nid(struct page *page, int nid); static inline void reset_page_last_nid(struct page *page) { - page_xchg_last_nid(page, (1 << LAST_NID_SHIFT) - 1); + int nid = (1 << LAST_NID_SHIFT) - 1; + + page->flags &= ~(LAST_NID_MASK << LAST_NID_PGSHIFT); + page->flags |= (nid & LAST_NID_MASK) << LAST_NID_PGSHIFT; } #endif /* LAST_NID_NOT_IN_PAGE_FLAGS */ #else -- cgit v1.2.3 From 22b751c3d0376e86a377e3a0aa2ddbbe9d2eefc1 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Fri, 22 Feb 2013 16:34:59 -0800 Subject: mm: rename page struct field helpers The function names page_xchg_last_nid(), page_last_nid() and reset_page_last_nid() were judged to be inconsistent so rename them to a struct_field_op style pattern. As it looked jarring to have reset_page_mapcount() and page_nid_reset_last() beside each other in memmap_init_zone(), this patch also renames reset_page_mapcount() to page_mapcount_reset(). There are others like init_page_count() but as it is used throughout the arch code a rename would likely cause more conflicts than it is worth. [akpm@linux-foundation.org: fix zcache] Signed-off-by: Mel Gorman Suggested-by: Andrew Morton Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 8a5bbe3b9e56..fe039bdba4ed 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -367,7 +367,7 @@ static inline struct page *compound_head(struct page *page) * both from it and to it can be tracked, using atomic_inc_and_test * and atomic_add_negative(-1). */ -static inline void reset_page_mapcount(struct page *page) +static inline void page_mapcount_reset(struct page *page) { atomic_set(&(page)->_mapcount, -1); } @@ -658,28 +658,28 @@ static inline int page_to_nid(const struct page *page) #ifdef CONFIG_NUMA_BALANCING #ifdef LAST_NID_NOT_IN_PAGE_FLAGS -static inline int page_xchg_last_nid(struct page *page, int nid) +static inline int page_nid_xchg_last(struct page *page, int nid) { return xchg(&page->_last_nid, nid); } -static inline int page_last_nid(struct page *page) +static inline int page_nid_last(struct page *page) { return page->_last_nid; } -static inline void reset_page_last_nid(struct page *page) +static inline void page_nid_reset_last(struct page *page) { page->_last_nid = -1; } #else -static inline int page_last_nid(struct page *page) +static inline int page_nid_last(struct page *page) { return (page->flags >> LAST_NID_PGSHIFT) & LAST_NID_MASK; } -extern int page_xchg_last_nid(struct page *page, int nid); +extern int page_nid_xchg_last(struct page *page, int nid); -static inline void reset_page_last_nid(struct page *page) +static inline void page_nid_reset_last(struct page *page) { int nid = (1 << LAST_NID_SHIFT) - 1; @@ -688,17 +688,17 @@ static inline void reset_page_last_nid(struct page *page) } #endif /* LAST_NID_NOT_IN_PAGE_FLAGS */ #else -static inline int page_xchg_last_nid(struct page *page, int nid) +static inline int page_nid_xchg_last(struct page *page, int nid) { return page_to_nid(page); } -static inline int page_last_nid(struct page *page) +static inline int page_nid_last(struct page *page) { return page_to_nid(page); } -static inline void reset_page_last_nid(struct page *page) +static inline void page_nid_reset_last(struct page *page) { } #endif -- cgit v1.2.3 From cbf86cfe04a66471f23b9e62e5eba4e525f38855 Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Fri, 22 Feb 2013 16:35:08 -0800 Subject: ksm: remove old stable nodes more thoroughly Switching merge_across_nodes after running KSM is liable to oops on stale nodes still left over from the previous stable tree. It's not something that people will often want to do, but it would be lame to demand a reboot when they're trying to determine which merge_across_nodes setting is best. How can this happen? We only permit switching merge_across_nodes when pages_shared is 0, and usually set run 2 to force that beforehand, which ought to unmerge everything: yet oopses still occur when you then run 1. Three causes: 1. The old stable tree (built according to the inverse merge_across_nodes) has not been fully torn down. A stable node lingers until get_ksm_page() notices that the page it references no longer references it: but the page is not necessarily freed as soon as expected, particularly when swapcache. Fix this with a pass through the old stable tree, applying get_ksm_page() to each of the remaining nodes (most found stale and removed immediately), with forced removal of any left over. Unless the page is still mapped: I've not seen that case, it shouldn't occur, but better to WARN_ON_ONCE and EBUSY than BUG. 2. __ksm_enter() has a nice little optimization, to insert the new mm just behind ksmd's cursor, so there's a full pass for it to stabilize (or be removed) before ksmd addresses it. Nice when ksmd is running, but not so nice when we're trying to unmerge all mms: we were missing those mms forked and inserted behind the unmerge cursor. Easily fixed by inserting at the end when KSM_RUN_UNMERGE. 3. It is possible for a KSM page to be faulted back from swapcache into an mm, just after unmerge_and_remove_all_rmap_items() scanned past it. Fix this by copying on fault when KSM_RUN_UNMERGE: but that is private to ksm.c, so dissolve the distinction between ksm_might_need_to_copy() and ksm_does_need_to_copy(), doing it all in the one call into ksm.c. A long outstanding, unrelated bugfix sneaks in with that third fix: ksm_does_need_to_copy() would copy from a !PageUptodate page (implying I/O error when read in from swap) to a page which it then marks Uptodate. Fix this case by not copying, letting do_swap_page() discover the error. Signed-off-by: Hugh Dickins Cc: Rik van Riel Cc: Petr Holasek Cc: Andrea Arcangeli Cc: Izik Eidus Cc: Gerald Schaefer Cc: KOSAKI Motohiro Acked-by: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/ksm.h | 18 ++++-------------- 1 file changed, 4 insertions(+), 14 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ksm.h b/include/linux/ksm.h index 3319a6967626..45c9b6a17bcb 100644 --- a/include/linux/ksm.h +++ b/include/linux/ksm.h @@ -16,9 +16,6 @@ struct stable_node; struct mem_cgroup; -struct page *ksm_does_need_to_copy(struct page *page, - struct vm_area_struct *vma, unsigned long address); - #ifdef CONFIG_KSM int ksm_madvise(struct vm_area_struct *vma, unsigned long start, unsigned long end, int advice, unsigned long *vm_flags); @@ -73,15 +70,8 @@ static inline void set_page_stable_node(struct page *page, * We'd like to make this conditional on vma->vm_flags & VM_MERGEABLE, * but what if the vma was unmerged while the page was swapped out? */ -static inline int ksm_might_need_to_copy(struct page *page, - struct vm_area_struct *vma, unsigned long address) -{ - struct anon_vma *anon_vma = page_anon_vma(page); - - return anon_vma && - (anon_vma->root != vma->anon_vma->root || - page->index != linear_page_index(vma, address)); -} +struct page *ksm_might_need_to_copy(struct page *page, + struct vm_area_struct *vma, unsigned long address); int page_referenced_ksm(struct page *page, struct mem_cgroup *memcg, unsigned long *vm_flags); @@ -113,10 +103,10 @@ static inline int ksm_madvise(struct vm_area_struct *vma, unsigned long start, return 0; } -static inline int ksm_might_need_to_copy(struct page *page, +static inline struct page *ksm_might_need_to_copy(struct page *page, struct vm_area_struct *vma, unsigned long address) { - return 0; + return page; } static inline int page_referenced_ksm(struct page *page, -- cgit v1.2.3 From 9c620e2bc5aa4256c102ada34e6c76204ed5898b Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Fri, 22 Feb 2013 16:35:14 -0800 Subject: mm: remove offlining arg to migrate_pages No functional change, but the only purpose of the offlining argument to migrate_pages() etc, was to ensure that __unmap_and_move() could migrate a KSM page for memory hotremove (which took ksm_thread_mutex) but not for other callers. Now all cases are safe, remove the arg. Signed-off-by: Hugh Dickins Cc: Rik van Riel Cc: Petr Holasek Cc: Andrea Arcangeli Cc: Izik Eidus Cc: Gerald Schaefer Cc: KOSAKI Motohiro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/migrate.h | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 1e9f627967a3..a405d3dc0f61 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -40,11 +40,9 @@ extern void putback_movable_pages(struct list_head *l); extern int migrate_page(struct address_space *, struct page *, struct page *, enum migrate_mode); extern int migrate_pages(struct list_head *l, new_page_t x, - unsigned long private, bool offlining, - enum migrate_mode mode, int reason); + unsigned long private, enum migrate_mode mode, int reason); extern int migrate_huge_page(struct page *, new_page_t x, - unsigned long private, bool offlining, - enum migrate_mode mode); + unsigned long private, enum migrate_mode mode); extern int fail_migrate_page(struct address_space *, struct page *, struct page *); @@ -62,11 +60,11 @@ extern int migrate_huge_page_move_mapping(struct address_space *mapping, static inline void putback_lru_pages(struct list_head *l) {} static inline void putback_movable_pages(struct list_head *l) {} static inline int migrate_pages(struct list_head *l, new_page_t x, - unsigned long private, bool offlining, - enum migrate_mode mode, int reason) { return -ENOSYS; } + unsigned long private, enum migrate_mode mode, int reason) + { return -ENOSYS; } static inline int migrate_huge_page(struct page *page, new_page_t x, - unsigned long private, bool offlining, - enum migrate_mode mode) { return -ENOSYS; } + unsigned long private, enum migrate_mode mode) + { return -ENOSYS; } static inline int migrate_prep(void) { return -ENOSYS; } static inline int migrate_prep_local(void) { return -ENOSYS; } -- cgit v1.2.3 From e3790144c9091631a18564aa64db8a971da02c41 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Fri, 22 Feb 2013 16:35:19 -0800 Subject: mm: refactor inactive_file_is_low() to use get_lru_size() An inactive file list is considered low when its active counterpart is bigger, regardless of whether it is a global zone LRU list or a memcg zone LRU list. The only difference is in how the LRU size is assessed. get_lru_size() does the right thing for both global and memcg reclaim situations. Get rid of inactive_file_is_low_global() and mem_cgroup_inactive_file_is_low() by using get_lru_size() and compare the numbers in common code. Signed-off-by: Johannes Weiner Acked-by: Michal Hocko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 7 ------- 1 file changed, 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 28bd5fa2ff2e..d6183f06d8c1 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -116,7 +116,6 @@ void mem_cgroup_iter_break(struct mem_cgroup *, struct mem_cgroup *); * For memory reclaim. */ int mem_cgroup_inactive_anon_is_low(struct lruvec *lruvec); -int mem_cgroup_inactive_file_is_low(struct lruvec *lruvec); int mem_cgroup_select_victim_node(struct mem_cgroup *memcg); unsigned long mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list); void mem_cgroup_update_lru_size(struct lruvec *, enum lru_list, int); @@ -321,12 +320,6 @@ mem_cgroup_inactive_anon_is_low(struct lruvec *lruvec) return 1; } -static inline int -mem_cgroup_inactive_file_is_low(struct lruvec *lruvec) -{ - return 1; -} - static inline unsigned long mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru) { -- cgit v1.2.3 From 9127ab4ff92f0ecd7b4671efa9d0edb21c691e9f Mon Sep 17 00:00:00 2001 From: Cody P Schafer Date: Fri, 22 Feb 2013 16:35:21 -0800 Subject: mm: add SECTION_IN_PAGE_FLAGS Instead of directly utilizing a combination of config options to determine this, add a macro to specifically address it. Signed-off-by: Cody P Schafer Cc: David Hansen Cc: Catalin Marinas Cc: Johannes Weiner Cc: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index fe039bdba4ed..97da0302cf51 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -625,6 +625,10 @@ static inline enum zone_type page_zonenum(const struct page *page) return (page->flags >> ZONES_PGSHIFT) & ZONES_MASK; } +#if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP) +#define SECTION_IN_PAGE_FLAGS +#endif + /* * The identification function is only used by the buddy allocator for * determining if two pages could be buddies. We are not really @@ -708,7 +712,7 @@ static inline struct zone *page_zone(const struct page *page) return &NODE_DATA(page_to_nid(page))->node_zones[page_zonenum(page)]; } -#if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP) +#ifdef SECTION_IN_PAGE_FLAGS static inline void set_page_section(struct page *page, unsigned long section) { page->flags &= ~(SECTIONS_MASK << SECTIONS_PGSHIFT); @@ -738,7 +742,7 @@ static inline void set_page_links(struct page *page, enum zone_type zone, { set_page_zone(page, zone); set_page_node(page, node); -#if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP) +#ifdef SECTION_IN_PAGE_FLAGS set_page_section(page, pfn_to_section_nr(pfn)); #endif } -- cgit v1.2.3 From 108bcc96ef7047c02cad4d229f04da38186a3f3f Mon Sep 17 00:00:00 2001 From: Cody P Schafer Date: Fri, 22 Feb 2013 16:35:23 -0800 Subject: mm: add & use zone_end_pfn() and zone_spans_pfn() Add 2 helpers (zone_end_pfn() and zone_spans_pfn()) to reduce code duplication. This also switches to using them in compaction (where an additional variable needed to be renamed), page_alloc, vmstat, memory_hotplug, and kmemleak. Note that in compaction.c I avoid calling zone_end_pfn() repeatedly because I expect at some point the sycronization issues with start_pfn & spanned_pages will need fixing, either by actually using the seqlock or clever memory barrier usage. Signed-off-by: Cody P Schafer Cc: David Hansen Cc: Catalin Marinas Cc: Johannes Weiner Cc: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 6c80d0ac14dd..34343f51e211 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -527,6 +527,16 @@ static inline int zone_is_oom_locked(const struct zone *zone) return test_bit(ZONE_OOM_LOCKED, &zone->flags); } +static inline unsigned zone_end_pfn(const struct zone *zone) +{ + return zone->zone_start_pfn + zone->spanned_pages; +} + +static inline bool zone_spans_pfn(const struct zone *zone, unsigned long pfn) +{ + return zone->zone_start_pfn <= pfn && pfn < zone_end_pfn(zone); +} + /* * The "priority" of VM scanning is how much of the queues we will scan in one * go. A value of 12 for DEF_PRIORITY implies that we will scan 1/4096th of the -- cgit v1.2.3 From 2a6e3ebee2edcade56f836390a5f0c7b76ff5f9e Mon Sep 17 00:00:00 2001 From: Cody P Schafer Date: Fri, 22 Feb 2013 16:35:24 -0800 Subject: mm: add zone_is_empty() and zone_is_initialized() Factoring out these 2 checks makes it more clear what we are actually checking for. Signed-off-by: Cody P Schafer Cc: David Hansen Cc: Catalin Marinas Cc: Johannes Weiner Cc: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 34343f51e211..cf8925962b68 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -537,6 +537,16 @@ static inline bool zone_spans_pfn(const struct zone *zone, unsigned long pfn) return zone->zone_start_pfn <= pfn && pfn < zone_end_pfn(zone); } +static inline bool zone_is_initialized(struct zone *zone) +{ + return !!zone->wait_table; +} + +static inline bool zone_is_empty(struct zone *zone) +{ + return zone->spanned_pages == 0; +} + /* * The "priority" of VM scanning is how much of the queues we will scan in one * go. A value of 12 for DEF_PRIORITY implies that we will scan 1/4096th of the -- cgit v1.2.3 From da3649e133948d8b7d8c57b05a33faf62ac2cc7e Mon Sep 17 00:00:00 2001 From: Cody P Schafer Date: Fri, 22 Feb 2013 16:35:27 -0800 Subject: mmzone: add pgdat_{end_pfn,is_empty}() helpers & consolidate. Add pgdat_end_pfn() and pgdat_is_empty() helpers which match the similar zone_*() functions. Change node_end_pfn() to be a wrapper of pgdat_end_pfn(). Signed-off-by: Cody P Schafer Cc: David Hansen Cc: Catalin Marinas Cc: Johannes Weiner Cc: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index cf8925962b68..ede274957e05 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -756,11 +756,17 @@ typedef struct pglist_data { #define nid_page_nr(nid, pagenr) pgdat_page_nr(NODE_DATA(nid),(pagenr)) #define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn) +#define node_end_pfn(nid) pgdat_end_pfn(NODE_DATA(nid)) -#define node_end_pfn(nid) ({\ - pg_data_t *__pgdat = NODE_DATA(nid);\ - __pgdat->node_start_pfn + __pgdat->node_spanned_pages;\ -}) +static inline unsigned long pgdat_end_pfn(pg_data_t *pgdat) +{ + return pgdat->node_start_pfn + pgdat->node_spanned_pages; +} + +static inline bool pgdat_is_empty(pg_data_t *pgdat) +{ + return !pgdat->node_start_pfn && !pgdat->node_spanned_pages; +} #include -- cgit v1.2.3 From ebec3862fd6eefe8301aa55ed2e30c685d831842 Mon Sep 17 00:00:00 2001 From: Zhang Yanfei Date: Fri, 22 Feb 2013 16:35:43 -0800 Subject: mm: fix return type for functions nr_free_*_pages Currently, the amount of RAM that functions nr_free_*_pages return is held in unsigned int. But in machines with big memory (exceeding 16TB), the amount may be incorrect because of overflow, so fix it. Signed-off-by: Zhang Yanfei Cc: Simon Horman Cc: Julian Anastasov Cc: David Miller Cc: Eric Van Hensbergen Cc: Ron Minnich Cc: Latchesar Ionkov Cc: Mel Gorman Cc: Minchan Kim Cc: KAMEZAWA Hiroyuki Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/swap.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/swap.h b/include/linux/swap.h index a3e22d357e91..8a15f38ebc5c 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -225,8 +225,8 @@ struct swap_list_t { extern unsigned long totalram_pages; extern unsigned long totalreserve_pages; extern unsigned long dirty_balance_reserve; -extern unsigned int nr_free_buffer_pages(void); -extern unsigned int nr_free_pagecache_pages(void); +extern unsigned long nr_free_buffer_pages(void); +extern unsigned long nr_free_pagecache_pages(void); /* Definition of global_page_state not available yet */ #define nr_free_pages() global_page_state(NR_FREE_PAGES) -- cgit v1.2.3 From b21e0b90ccb99a377bce0167fed1e881bb5065d7 Mon Sep 17 00:00:00 2001 From: Zhang Yanfei Date: Fri, 22 Feb 2013 16:35:48 -0800 Subject: vmscan: change type of vm_total_pages to unsigned long This variable is calculated from nr_free_pagecache_pages so change its type to unsigned long. Signed-off-by: Zhang Yanfei Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/swap.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/swap.h b/include/linux/swap.h index 8a15f38ebc5c..2818a123f3ea 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -275,7 +275,7 @@ extern unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem, extern unsigned long shrink_all_memory(unsigned long nr_pages); extern int vm_swappiness; extern int remove_mapping(struct address_space *mapping, struct page *page); -extern long vm_total_pages; +extern unsigned long vm_total_pages; #ifdef CONFIG_NUMA extern int zone_reclaim_mode; -- cgit v1.2.3 From 28a35716d317980ae9bc2ff2f84c33a3cda9e884 Mon Sep 17 00:00:00 2001 From: Michel Lespinasse Date: Fri, 22 Feb 2013 16:35:55 -0800 Subject: mm: use long type for page counts in mm_populate() and get_user_pages() Use long type for page counts in mm_populate() so as to avoid integer overflow when running the following test code: int main(void) { void *p = mmap(NULL, 0x100000000000, PROT_READ, MAP_PRIVATE | MAP_ANON, -1, 0); printf("p: %p\n", p); mlockall(MCL_CURRENT); printf("done\n"); return 0; } Signed-off-by: Michel Lespinasse Cc: Andrea Arcangeli Cc: Rik van Riel Cc: Mel Gorman Cc: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/hugetlb.h | 6 +++--- include/linux/mm.h | 15 ++++++++------- 2 files changed, 11 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 0c80d3f57a5b..eedc334fb6f5 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -43,9 +43,9 @@ int hugetlb_mempolicy_sysctl_handler(struct ctl_table *, int, #endif int copy_hugetlb_page_range(struct mm_struct *, struct mm_struct *, struct vm_area_struct *); -int follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *, - struct page **, struct vm_area_struct **, - unsigned long *, int *, int, unsigned int flags); +long follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *, + struct page **, struct vm_area_struct **, + unsigned long *, unsigned long *, long, unsigned int); void unmap_hugepage_range(struct vm_area_struct *, unsigned long, unsigned long, struct page *); void __unmap_hugepage_range_final(struct mmu_gather *tlb, diff --git a/include/linux/mm.h b/include/linux/mm.h index 97da0302cf51..87b0ef253607 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1013,13 +1013,14 @@ extern int access_process_vm(struct task_struct *tsk, unsigned long addr, void * extern int access_remote_vm(struct mm_struct *mm, unsigned long addr, void *buf, int len, int write); -int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm, - unsigned long start, int len, unsigned int foll_flags, - struct page **pages, struct vm_area_struct **vmas, - int *nonblocking); -int get_user_pages(struct task_struct *tsk, struct mm_struct *mm, - unsigned long start, int nr_pages, int write, int force, - struct page **pages, struct vm_area_struct **vmas); +long __get_user_pages(struct task_struct *tsk, struct mm_struct *mm, + unsigned long start, unsigned long nr_pages, + unsigned int foll_flags, struct page **pages, + struct vm_area_struct **vmas, int *nonblocking); +long get_user_pages(struct task_struct *tsk, struct mm_struct *mm, + unsigned long start, unsigned long nr_pages, + int write, int force, struct page **pages, + struct vm_area_struct **vmas); int get_user_pages_fast(unsigned long start, int nr_pages, int write, struct page **pages); struct kvec; -- cgit v1.2.3 From 240aadeedc4a89fc44623f8ce4ca46bda73db07e Mon Sep 17 00:00:00 2001 From: Michel Lespinasse Date: Fri, 22 Feb 2013 16:35:56 -0800 Subject: mm: accelerate mm_populate() treatment of THP pages This change adds a follow_page_mask function which is equivalent to follow_page, but with an extra page_mask argument. follow_page_mask sets *page_mask to HPAGE_PMD_NR - 1 when it encounters a THP page, and to 0 in other cases. __get_user_pages() makes use of this in order to accelerate populating THP ranges - that is, when both the pages and vmas arrays are NULL, we don't need to iterate HPAGE_PMD_NR times to cover a single THP page (and we also avoid taking mm->page_table_lock that many times). Signed-off-by: Michel Lespinasse Cc: Andrea Arcangeli Cc: Rik van Riel Cc: Mel Gorman Cc: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 87b0ef253607..6124f1db50fe 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1629,8 +1629,17 @@ int vm_insert_pfn(struct vm_area_struct *vma, unsigned long addr, int vm_insert_mixed(struct vm_area_struct *vma, unsigned long addr, unsigned long pfn); -struct page *follow_page(struct vm_area_struct *, unsigned long address, - unsigned int foll_flags); +struct page *follow_page_mask(struct vm_area_struct *vma, + unsigned long address, unsigned int foll_flags, + unsigned int *page_mask); + +static inline struct page *follow_page(struct vm_area_struct *vma, + unsigned long address, unsigned int foll_flags) +{ + unsigned int unused_page_mask; + return follow_page_mask(vma, address, foll_flags, &unused_page_mask); +} + #define FOLL_WRITE 0x01 /* check pte is writable */ #define FOLL_TOUCH 0x02 /* mark page accessed */ #define FOLL_GET 0x04 /* do get_page on page */ -- cgit v1.2.3 From 5117b3b835f288314a2d4e5512bc1747e3a7c8ed Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Fri, 22 Feb 2013 16:36:07 -0800 Subject: mm,ksm: FOLL_MIGRATION do migration_entry_wait In "ksm: remove old stable nodes more thoroughly" I said that I'd never seen its WARN_ON_ONCE(page_mapped(page)). True at the time of writing, but it soon appeared once I tried fuller tests on the whole series. It turned out to be due to the KSM page migration itself: unmerge_and_ remove_all_rmap_items() failed to locate and replace all the KSM pages, because of that hiatus in page migration when old pte has been replaced by migration entry, but not yet by new pte. follow_page() finds no page at that instant, but a KSM page reappears shortly after, without a fault. Add FOLL_MIGRATION flag, so follow_page() can do migration_entry_wait() for KSM's break_cow(). I'd have preferred to avoid another flag, and do it every time, in case someone else makes the same easy mistake; but did not find another transgressor (the common get_user_pages() is of course safe), and cannot be sure that every follow_page() caller is prepared to sleep - ia64's xencomm_vtop()? Now, THP's wait_split_huge_page() can already sleep there, since anon_vma locking was changed to mutex, but maybe that's somehow excluded. Signed-off-by: Hugh Dickins Cc: Mel Gorman Cc: Petr Holasek Cc: Andrea Arcangeli Cc: Izik Eidus Cc: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 6124f1db50fe..e7c3f9a0111a 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1651,6 +1651,7 @@ static inline struct page *follow_page(struct vm_area_struct *vma, #define FOLL_SPLIT 0x80 /* don't return transhuge pages, split them */ #define FOLL_HWPOISON 0x100 /* check page is hwpoisoned */ #define FOLL_NUMA 0x200 /* force NUMA hinting page fault */ +#define FOLL_MIGRATION 0x400 /* wait for page to replace migration entry */ typedef int (*pte_fn_t)(pte_t *pte, pgtable_t token, unsigned long addr, void *data); -- cgit v1.2.3 From da8c87241c26aac81a64c7e4d21d438a33018f4e Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Thu, 21 Feb 2013 23:32:27 +0000 Subject: vlan: adjust vlan_set_encap_proto() for its callers There are two places to call vlan_set_encap_proto(): vlan_untag() and __pop_vlan_tci(). vlan_untag() assumes skb->data points after mac addr, otherwise the following code vhdr = (struct vlan_hdr *) skb->data; vlan_tci = ntohs(vhdr->h_vlan_TCI); __vlan_hwaccel_put_tag(skb, vlan_tci); skb_pull_rcsum(skb, VLAN_HLEN); won't be correct. But __pop_vlan_tci() assumes points _before_ mac addr. In vlan_set_encap_proto(), it looks for some magic L2 value after mac addr: rawp = skb->data; if (*(unsigned short *) rawp == 0xFFFF) ... Therefore __pop_vlan_tci() is obviously wrong. A quick fix is avoiding using skb->data in vlan_set_encap_proto(), use 'vhdr+1' is always correct in both cases. Cc: David S. Miller Cc: Jesse Gross Signed-off-by: Cong Wang Acked-by: Jesse Gross Signed-off-by: David S. Miller --- include/linux/if_vlan.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h index d06cc5c8f58c..218a3b686d90 100644 --- a/include/linux/if_vlan.h +++ b/include/linux/if_vlan.h @@ -331,7 +331,7 @@ static inline void vlan_set_encap_proto(struct sk_buff *skb, struct vlan_hdr *vhdr) { __be16 proto; - unsigned char *rawp; + unsigned short *rawp; /* * Was a VLAN packet, grab the encapsulated protocol, which the layer @@ -344,8 +344,8 @@ static inline void vlan_set_encap_proto(struct sk_buff *skb, return; } - rawp = skb->data; - if (*(unsigned short *) rawp == 0xFFFF) + rawp = (unsigned short *)(vhdr + 1); + if (*rawp == 0xFFFF) /* * This is a magic hack to spot IPX packets. Older Novell * breaks the protocol design and runs IPX over 802.3 without -- cgit v1.2.3 From 561c6731978fa128f29342495f47fc3365898b3d Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 24 Feb 2013 10:52:26 -0500 Subject: switch lseek to COMPAT_SYSCALL_DEFINE Signed-off-by: Al Viro --- include/linux/compat.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/compat.h b/include/linux/compat.h index de095b0462a7..59c72048bf20 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -359,6 +359,7 @@ asmlinkage ssize_t compat_sys_preadv(unsigned long fd, asmlinkage ssize_t compat_sys_pwritev(unsigned long fd, const struct compat_iovec __user *vec, unsigned long vlen, u32 pos_low, u32 pos_high); +asmlinkage long comat_sys_lseek(unsigned int, compat_off_t, unsigned int); asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv, const compat_uptr_t __user *envp); -- cgit v1.2.3 From c148e9ff4bd45f26d3f0253c20efc497672c3c84 Mon Sep 17 00:00:00 2001 From: "Zhang, YiX X" Date: Tue, 8 Jan 2013 06:07:39 +0000 Subject: mmc: correct the EXCEPTION_EVENTS_STATUS value in comment The right value is 54 according to eMMC 4.5 specification. Signed-off-by: ZhangYi Signed-off-by: Chris Ball --- include/linux/mmc/card.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index be2500a49925..7069dcea27c5 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -83,7 +83,7 @@ struct mmc_ext_csd { unsigned int data_tag_unit_size; /* DATA TAG UNIT size */ unsigned int boot_ro_lock; /* ro lock support */ bool boot_ro_lockable; - u8 raw_exception_status; /* 53 */ + u8 raw_exception_status; /* 54 */ u8 raw_partition_support; /* 160 */ u8 raw_rpmb_size_mult; /* 168 */ u8 raw_erased_mem_count; /* 181 */ -- cgit v1.2.3 From a70aaa64da2205d32d1c9362d8f5d4be619cd58f Mon Sep 17 00:00:00 2001 From: Doug Anderson Date: Fri, 11 Jan 2013 17:03:50 +0000 Subject: mmc: dw_mmc: Add "disable-wp" device tree property The "disable-wp" property is used to specify that a given SD card slot doesn't have a concept of write protect. This eliminates the need for special case code for SD slots that should never be write protected (like a micro SD slot or a dev board). The dw_mmc driver is special in needing to specify "disable-wp" because the lack of a "wp-gpios" property means to use the special purpose write protect line. On some other mmc devices the lack of "wp-gpios" means that write protect should be disabled. Signed-off-by: Doug Anderson Acked-by: Seungwon Jeon Acked-by: Will Newton Acked-by: Olof Johansson Signed-off-by: Chris Ball --- include/linux/mmc/dw_mmc.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h index 34be4f47293c..de61de5608c9 100644 --- a/include/linux/mmc/dw_mmc.h +++ b/include/linux/mmc/dw_mmc.h @@ -209,9 +209,18 @@ struct dw_mci_dma_ops { #define DW_MCI_QUIRK_HIGHSPEED BIT(2) /* Unreliable card detection */ #define DW_MCI_QUIRK_BROKEN_CARD_DETECTION BIT(3) + /* Write Protect detection not available */ +/* + * NOTE: DW_MCI_QUIRK_NO_WRITE_PROTECT will be removed in a future + * patch in the series once reference to it is removed. + */ #define DW_MCI_QUIRK_NO_WRITE_PROTECT BIT(4) +/* Slot level quirks */ +/* This slot has no write protect */ +#define DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT BIT(0) + struct dma_pdata; struct block_settings { -- cgit v1.2.3 From 9640639b09313af4cd37a465408643aba927808e Mon Sep 17 00:00:00 2001 From: Doug Anderson Date: Fri, 11 Jan 2013 17:03:54 +0000 Subject: mmc: dw_mmc: Remove DW_MCI_QUIRK_NO_WRITE_PROTECT The original quirk was added in the change 'mmc: dw_mmc: add quirk to indicate missing write protect line'. The original quirk was added at a controller level even though each slot has its own write protect (so the quirk should be at the slot level). A recent change (mmc: dw_mmc: Add "disable-wp" device tree property) added a slot-level quirk and support for the quirk directly to dw_mmc. Signed-off-by: Doug Anderson Acked-by: Will Newton Acked-by: Olof Johansson Signed-off-by: Chris Ball --- include/linux/mmc/dw_mmc.h | 7 ------- 1 file changed, 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h index de61de5608c9..198f0fa44e9f 100644 --- a/include/linux/mmc/dw_mmc.h +++ b/include/linux/mmc/dw_mmc.h @@ -210,13 +210,6 @@ struct dw_mci_dma_ops { /* Unreliable card detection */ #define DW_MCI_QUIRK_BROKEN_CARD_DETECTION BIT(3) -/* Write Protect detection not available */ -/* - * NOTE: DW_MCI_QUIRK_NO_WRITE_PROTECT will be removed in a future - * patch in the series once reference to it is removed. - */ -#define DW_MCI_QUIRK_NO_WRITE_PROTECT BIT(4) - /* Slot level quirks */ /* This slot has no write protect */ #define DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT BIT(0) -- cgit v1.2.3 From af51079e68d4759e458b0592df5d1fab373c43ae Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Mon, 21 Jan 2013 19:02:28 +0800 Subject: mmc: sdhci-esdhc-imx: support 8bit mode The i.MX esdhc has a nonstandard bit layout for the SDHCI_HOST_CONTROL register. To support 8bit bus width on i.MX populate the platform_bus_width callback. This is tested on an i.MX25, but should according to the datasheets work on the other i.MX using this hardware aswell. The i.MX6, while having a SDHCI_SPEC_300 controller, still uses the same nonstandard register layout. Signed-off-by: Sascha Hauer Signed-off-by: Shawn Guo Tested-by: Dirk Behme Signed-off-by: Chris Ball --- include/linux/platform_data/mmc-esdhc-imx.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/platform_data/mmc-esdhc-imx.h b/include/linux/platform_data/mmc-esdhc-imx.h index aaf97481f413..b4a0521ce411 100644 --- a/include/linux/platform_data/mmc-esdhc-imx.h +++ b/include/linux/platform_data/mmc-esdhc-imx.h @@ -39,5 +39,6 @@ struct esdhc_platform_data { unsigned int cd_gpio; enum wp_types wp_type; enum cd_types cd_type; + int max_bus_width; }; #endif /* __ASM_ARCH_IMX_ESDHC_H */ -- cgit v1.2.3 From d887874e0ead6a0b86b6046b872730c81c121352 Mon Sep 17 00:00:00 2001 From: Johan Rudholm Date: Mon, 28 Jan 2013 15:08:26 +0100 Subject: mmc: core: Add card_busy to host_ops This host_ops member is used to test if the card is signaling busy by pulling dat[0:3] low. Signed-off-by: Johan Rudholm Acked-by: Ulf Hansson Tested-by: Wei WANG Signed-off-by: Chris Ball --- include/linux/mmc/host.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 523d570f58ad..0373b0a6daac 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -131,6 +131,9 @@ struct mmc_host_ops { int (*start_signal_voltage_switch)(struct mmc_host *host, struct mmc_ios *ios); + /* Check if the card is pulling dat[0:3] low */ + int (*card_busy)(struct mmc_host *host); + /* The tuning command opcode value is different for SD and eMMC cards */ int (*execute_tuning)(struct mmc_host *host, u32 opcode); void (*enable_preset_value)(struct mmc_host *host, bool enable); -- cgit v1.2.3 From 52983382c74f59a3953e622d7661a24e1bc4388a Mon Sep 17 00:00:00 2001 From: Kevin Liu Date: Thu, 31 Jan 2013 11:31:37 +0800 Subject: mmc: sdhci: enhance preset value function 4d55c5a1 ("mmc: sdhci: enable preset value after uhs initialization") added preset value support and enabled it by default during sd card init. Below are the enhancements introduced by this patch: 1. In current code, preset value is enabled after setting clock finished, which means the clock is manually set by driver firstly and then suddenly switched to preset value at this point. So the first setting is useless and unnecessary. What's more, the first clock setting may differ from the preset one. The better way is enable preset value just after switch to UHS mode so the preset value can take effect immediately. So move preset value enable from mmc_sd_init_card to sdhci_set_ios which will be called during set timing. 2. In current code, preset value is disabled at the beginning of mmc_attach_sd. It's too late since low freq (400khz) should be set in mmc_power_up. So move preset value disable to sdhci_set_ios which will be called during power up. 3. host->clock and ios->drv_type should also be updated according to the preset value if it's enabled. Current code missed this. 4. This patch also introduce a quirk to disable preset value in case preset value doesn't work. This patch has been verified on sdhci-pxav3 platform with both preset enabled and disabled. Signed-off-by: Kevin Liu Reviewed-by: Ulf Hansson Signed-off-by: Chris Ball --- include/linux/mmc/host.h | 1 - include/linux/mmc/sdhci.h | 1 + 2 files changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 0373b0a6daac..6c235e03de29 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -136,7 +136,6 @@ struct mmc_host_ops { /* The tuning command opcode value is different for SD and eMMC cards */ int (*execute_tuning)(struct mmc_host *host, u32 opcode); - void (*enable_preset_value)(struct mmc_host *host, bool enable); int (*select_drive_strength)(unsigned int max_dtr, int host_drv, int card_drv); void (*hw_reset)(struct mmc_host *host); void (*card_event)(struct mmc_host *host); diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h index 4bbc3301fbbf..b838ffc49e4a 100644 --- a/include/linux/mmc/sdhci.h +++ b/include/linux/mmc/sdhci.h @@ -94,6 +94,7 @@ struct sdhci_host { #define SDHCI_QUIRK2_HOST_NO_CMD23 (1<<1) /* The system physically doesn't support 1.8v, even if the host does */ #define SDHCI_QUIRK2_NO_1_8_V (1<<2) +#define SDHCI_QUIRK2_PRESET_VALUE_BROKEN (1<<3) int irq; /* Device IRQ */ void __iomem *ioaddr; /* Mapped address */ -- cgit v1.2.3 From abd9ac144947d9a604beb763339e2f77ce8bec79 Mon Sep 17 00:00:00 2001 From: Seungwon Jeon Date: Wed, 6 Feb 2013 17:01:43 +0900 Subject: mmc: add packed command feature of eMMC4.5 This patch adds packed command feature of eMMC4.5. The maximum number for packing read (or write) is offered and exception event relevant to packed command which is used for error handling is enabled. If host wants to use this feature, MMC_CAP2_PACKED_CMD should be set. Signed-off-by: Seungwon Jeon Reviewed-by: Maya Erez Reviewed-by: Subhash Jadavani Reviewed-by: Namjae Jeon Signed-off-by: Chris Ball --- include/linux/mmc/card.h | 3 +++ include/linux/mmc/host.h | 4 ++++ include/linux/mmc/mmc.h | 15 +++++++++++++-- 3 files changed, 20 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 7069dcea27c5..237f253f2fe0 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -53,6 +53,9 @@ struct mmc_ext_csd { u8 part_config; u8 cache_ctrl; u8 rst_n_function; + u8 max_packed_writes; + u8 max_packed_reads; + u8 packed_event_en; unsigned int part_time; /* Units: ms */ unsigned int sa_timeout; /* Units: 100ns */ unsigned int generic_cmd6_time; /* Units: 10ms */ diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 6c235e03de29..a0466c03f5e1 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -276,6 +276,10 @@ struct mmc_host { #define MMC_CAP2_HC_ERASE_SZ (1 << 9) /* High-capacity erase size */ #define MMC_CAP2_CD_ACTIVE_HIGH (1 << 10) /* Card-detect signal active high */ #define MMC_CAP2_RO_ACTIVE_HIGH (1 << 11) /* Write-protect signal active high */ +#define MMC_CAP2_PACKED_RD (1 << 12) /* Allow packed read */ +#define MMC_CAP2_PACKED_WR (1 << 13) /* Allow packed write */ +#define MMC_CAP2_PACKED_CMD (MMC_CAP2_PACKED_RD | \ + MMC_CAP2_PACKED_WR) mmc_pm_flag_t pm_caps; /* supported pm features */ diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index 94d532e41c61..50bcde3677ca 100644 --- a/include/linux/mmc/mmc.h +++ b/include/linux/mmc/mmc.h @@ -139,7 +139,7 @@ static inline bool mmc_op_multi(u32 opcode) #define R1_CURRENT_STATE(x) ((x & 0x00001E00) >> 9) /* sx, b (4 bits) */ #define R1_READY_FOR_DATA (1 << 8) /* sx, a */ #define R1_SWITCH_ERROR (1 << 7) /* sx, c */ -#define R1_EXCEPTION_EVENT (1 << 6) /* sx, a */ +#define R1_EXCEPTION_EVENT (1 << 6) /* sr, a */ #define R1_APP_CMD (1 << 5) /* sr, c */ #define R1_STATE_IDLE 0 @@ -275,7 +275,10 @@ struct _mmc_csd { #define EXT_CSD_FLUSH_CACHE 32 /* W */ #define EXT_CSD_CACHE_CTRL 33 /* R/W */ #define EXT_CSD_POWER_OFF_NOTIFICATION 34 /* R/W */ -#define EXT_CSD_EXP_EVENTS_STATUS 54 /* RO */ +#define EXT_CSD_PACKED_FAILURE_INDEX 35 /* RO */ +#define EXT_CSD_PACKED_CMD_STATUS 36 /* RO */ +#define EXT_CSD_EXP_EVENTS_STATUS 54 /* RO, 2 bytes */ +#define EXT_CSD_EXP_EVENTS_CTRL 56 /* R/W, 2 bytes */ #define EXT_CSD_DATA_SECTOR_SIZE 61 /* R */ #define EXT_CSD_GP_SIZE_MULT 143 /* R/W */ #define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */ @@ -324,6 +327,8 @@ struct _mmc_csd { #define EXT_CSD_CACHE_SIZE 249 /* RO, 4 bytes */ #define EXT_CSD_TAG_UNIT_SIZE 498 /* RO */ #define EXT_CSD_DATA_TAG_SUPPORT 499 /* RO */ +#define EXT_CSD_MAX_PACKED_WRITES 500 /* RO */ +#define EXT_CSD_MAX_PACKED_READS 501 /* RO */ #define EXT_CSD_BKOPS_SUPPORT 502 /* RO */ #define EXT_CSD_HPI_FEATURES 503 /* RO */ @@ -385,6 +390,9 @@ struct _mmc_csd { #define EXT_CSD_PWR_CL_4BIT_MASK 0x0F /* 8 bit PWR CLS */ #define EXT_CSD_PWR_CL_8BIT_SHIFT 4 #define EXT_CSD_PWR_CL_4BIT_SHIFT 0 + +#define EXT_CSD_PACKED_EVENT_EN BIT(3) + /* * EXCEPTION_EVENT_STATUS field */ @@ -393,6 +401,9 @@ struct _mmc_csd { #define EXT_CSD_SYSPOOL_EXHAUSTED BIT(2) #define EXT_CSD_PACKED_FAILURE BIT(3) +#define EXT_CSD_PACKED_GENERIC_ERROR BIT(0) +#define EXT_CSD_PACKED_INDEXED_ERROR BIT(1) + /* * BKOPS status level */ -- cgit v1.2.3 From ce39f9d17c14e56ea6772aa84393e6e0cc8499c4 Mon Sep 17 00:00:00 2001 From: Seungwon Jeon Date: Wed, 6 Feb 2013 17:02:46 +0900 Subject: mmc: support packed write command for eMMC4.5 devices This patch supports packed write command of eMMC4.5 devices. Several writes can be grouped in packed command and all data of the individual commands can be sent in a single transfer on the bus. Large amounts of data in one transfer rather than several data of small size are effective for eMMC write internally. As a result, packed command help write throughput be improved. The following tables show the results of packed write. Type A: test none | packed iozone 25.8 | 31 tiotest 27.6 | 31.2 lmdd 31.2 | 35.4 Type B: test none | packed iozone 44.1 | 51.1 tiotest 47.9 | 52.5 lmdd 51.6 | 59.2 Type C: test none | packed iozone 19.5 | 32 tiotest 19.9 | 34.5 lmdd 22.8 | 40.7 Signed-off-by: Seungwon Jeon Reviewed-by: Maya Erez Reviewed-by: Namjae Jeon Signed-off-by: Chris Ball --- include/linux/mmc/card.h | 5 +++++ include/linux/mmc/core.h | 4 ++++ include/linux/mmc/host.h | 5 +++++ 3 files changed, 14 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 237f253f2fe0..61b2c30c903b 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -310,6 +310,11 @@ static inline void mmc_part_add(struct mmc_card *card, unsigned int size, card->nr_parts++; } +static inline bool mmc_large_sector(struct mmc_card *card) +{ + return card->ext_csd.data_sector_size == 4096; +} + /* * The world is not perfect and supplies us with broken mmc/sdio devices. * For at least some of these bugs we need a work-around. diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h index 495d1336149c..39613b9a6fc5 100644 --- a/include/linux/mmc/core.h +++ b/include/linux/mmc/core.h @@ -18,6 +18,9 @@ struct mmc_request; struct mmc_command { u32 opcode; u32 arg; +#define MMC_CMD23_ARG_REL_WR (1 << 31) +#define MMC_CMD23_ARG_PACKED ((0 << 31) | (1 << 30)) +#define MMC_CMD23_ARG_TAG_REQ (1 << 29) u32 resp[4]; unsigned int flags; /* expected response type */ #define MMC_RSP_PRESENT (1 << 0) @@ -148,6 +151,7 @@ extern int mmc_wait_for_app_cmd(struct mmc_host *, struct mmc_card *, extern void mmc_start_bkops(struct mmc_card *card, bool from_exception); extern int __mmc_switch(struct mmc_card *, u8, u8, u8, unsigned int, bool); extern int mmc_switch(struct mmc_card *, u8, u8, u8, unsigned int); +extern int mmc_send_ext_csd(struct mmc_card *card, u8 *ext_csd); #define MMC_ERASE_ARG 0x00000000 #define MMC_SECURE_ERASE_ARG 0x80000000 diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index a0466c03f5e1..fd5fd5a6026f 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -465,6 +465,11 @@ static inline int mmc_host_uhs(struct mmc_host *host) MMC_CAP_UHS_DDR50); } +static inline int mmc_host_packed_wr(struct mmc_host *host) +{ + return host->caps2 & MMC_CAP2_PACKED_WR; +} + #ifdef CONFIG_MMC_CLKGATE void mmc_host_clk_hold(struct mmc_host *host); void mmc_host_clk_release(struct mmc_host *host); -- cgit v1.2.3 From 6c56e7a0fff166904ce2715f7ab1746460c1f11b Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Sat, 16 Feb 2013 16:21:16 +0100 Subject: mmc: provide a standard MMC device-tree binding parser centrally MMC defines a number of standard DT bindings. Having each driver parse them individually adds code redundancy and is error prone. Provide a standard function to unify the parsing. After all drivers are converted to using it instead of their own parsers, this function can be integrated into mmc_alloc_host(). Signed-off-by: Guennadi Liakhovetski Signed-off-by: Chris Ball --- include/linux/mmc/host.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index fd5fd5a6026f..bf93c9a6d729 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -368,6 +368,7 @@ extern struct mmc_host *mmc_alloc_host(int extra, struct device *); extern int mmc_add_host(struct mmc_host *); extern void mmc_remove_host(struct mmc_host *); extern void mmc_free_host(struct mmc_host *); +void mmc_of_parse(struct mmc_host *host); static inline void *mmc_priv(struct mmc_host *host) { -- cgit v1.2.3 From 8c9beb117bf31cdb757bc80992281004be8a177b Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Fri, 15 Feb 2013 16:13:53 +0100 Subject: mmc: (cosmetic) remove "extern" from function declarations The "extern" keyword isn't required in function declarations, remove it. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Chris Ball --- include/linux/mmc/host.h | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index bf93c9a6d729..d6f20cc6415e 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -364,10 +364,10 @@ struct mmc_host { unsigned long private[0] ____cacheline_aligned; }; -extern struct mmc_host *mmc_alloc_host(int extra, struct device *); -extern int mmc_add_host(struct mmc_host *); -extern void mmc_remove_host(struct mmc_host *); -extern void mmc_free_host(struct mmc_host *); +struct mmc_host *mmc_alloc_host(int extra, struct device *); +int mmc_add_host(struct mmc_host *); +void mmc_remove_host(struct mmc_host *); +void mmc_free_host(struct mmc_host *); void mmc_of_parse(struct mmc_host *host); static inline void *mmc_priv(struct mmc_host *host) @@ -381,16 +381,16 @@ static inline void *mmc_priv(struct mmc_host *host) #define mmc_classdev(x) (&(x)->class_dev) #define mmc_hostname(x) (dev_name(&(x)->class_dev)) -extern int mmc_suspend_host(struct mmc_host *); -extern int mmc_resume_host(struct mmc_host *); +int mmc_suspend_host(struct mmc_host *); +int mmc_resume_host(struct mmc_host *); -extern int mmc_power_save_host(struct mmc_host *host); -extern int mmc_power_restore_host(struct mmc_host *host); +int mmc_power_save_host(struct mmc_host *host); +int mmc_power_restore_host(struct mmc_host *host); -extern void mmc_detect_change(struct mmc_host *, unsigned long delay); -extern void mmc_request_done(struct mmc_host *, struct mmc_request *); +void mmc_detect_change(struct mmc_host *, unsigned long delay); +void mmc_request_done(struct mmc_host *, struct mmc_request *); -extern int mmc_cache_ctrl(struct mmc_host *, u8); +int mmc_cache_ctrl(struct mmc_host *, u8); static inline void mmc_signal_sdio_irq(struct mmc_host *host) { -- cgit v1.2.3 From 76a411f9f9423cbc9f62e70173459c5af54323f4 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Fri, 15 Feb 2013 16:13:57 +0100 Subject: mmc: sh_mobile_sdhi: remove unused .pdata field The struct sh_mobile_sdhi_info::pdata field was only used for platform- based card detection and isn't used anymore since the migration to GPIO- based MMC slot functions. Remove it. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Chris Ball --- include/linux/mmc/sh_mobile_sdhi.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mmc/sh_mobile_sdhi.h b/include/linux/mmc/sh_mobile_sdhi.h index b65679ffa880..b76bcf0621f6 100644 --- a/include/linux/mmc/sh_mobile_sdhi.h +++ b/include/linux/mmc/sh_mobile_sdhi.h @@ -4,7 +4,6 @@ #include struct platform_device; -struct tmio_mmc_data; #define SH_MOBILE_SDHI_IRQ_CARD_DETECT "card_detect" #define SH_MOBILE_SDHI_IRQ_SDCARD "sdcard" @@ -26,7 +25,6 @@ struct sh_mobile_sdhi_info { unsigned long tmio_caps2; u32 tmio_ocr_mask; /* available MMC voltages */ unsigned int cd_gpio; - struct tmio_mmc_data *pdata; void (*set_pwr)(struct platform_device *pdev, int state); int (*get_cd)(struct platform_device *pdev); -- cgit v1.2.3 From 27902c14aa2376d53755b6c02e3be671fd890e30 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Fri, 15 Feb 2013 16:13:59 +0100 Subject: mmc: tmio: remove unused and deprecated symbols The tmio_mmc_cd_wakeup() inline function has been deprecated since 3.4 and is unused since 3.4 too. Remove them. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Chris Ball --- include/linux/mfd/tmio.h | 18 ------------------ 1 file changed, 18 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h index d83af39815ab..99bf3e665997 100644 --- a/include/linux/mfd/tmio.h +++ b/include/linux/mfd/tmio.h @@ -64,12 +64,6 @@ * Some controllers can support SDIO IRQ signalling. */ #define TMIO_MMC_SDIO_IRQ (1 << 2) -/* - * Some platforms can detect card insertion events with controller powered - * down, using a GPIO IRQ, in which case they have to fill in cd_irq, cd_gpio, - * and cd_flags fields of struct tmio_mmc_data. - */ -#define TMIO_MMC_HAS_COLD_CD (1 << 3) /* * Some controllers require waiting for the SD bus to become * idle before writing to some registers. @@ -116,18 +110,6 @@ struct tmio_mmc_data { void (*clk_disable)(struct platform_device *pdev); }; -/* - * This function is deprecated and will be removed soon. Please, convert your - * platform to use drivers/mmc/core/cd-gpio.c - */ -#include -static inline void tmio_mmc_cd_wakeup(struct tmio_mmc_data *pdata) -{ - if (pdata) - mmc_detect_change(dev_get_drvdata(pdata->dev), - msecs_to_jiffies(100)); -} - /* * data for the NAND controller */ -- cgit v1.2.3 From 0e786102949d7461859c6ce9f39c2c8d28e42db3 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Fri, 15 Feb 2013 15:07:19 -0700 Subject: mmc: tegra: assume CONFIG_OF, remove platform data Tegra only supports, and always enables, device tree. Remove all ifdefs and runtime checks for DT support from the driver. Platform data is therefore no longer required. Rework the driver to parse the device tree directly into struct sdhci_tegra. Signed-off-by: Stephen Warren Signed-off-by: Chris Ball --- include/linux/platform_data/mmc-sdhci-tegra.h | 28 --------------------------- 1 file changed, 28 deletions(-) delete mode 100644 include/linux/platform_data/mmc-sdhci-tegra.h (limited to 'include/linux') diff --git a/include/linux/platform_data/mmc-sdhci-tegra.h b/include/linux/platform_data/mmc-sdhci-tegra.h deleted file mode 100644 index 8f8430697686..000000000000 --- a/include/linux/platform_data/mmc-sdhci-tegra.h +++ /dev/null @@ -1,28 +0,0 @@ -/* - * Copyright (C) 2009 Palm, Inc. - * Author: Yvonne Yip - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - */ -#ifndef __PLATFORM_DATA_TEGRA_SDHCI_H -#define __PLATFORM_DATA_TEGRA_SDHCI_H - -#include - -struct tegra_sdhci_platform_data { - int cd_gpio; - int wp_gpio; - int power_gpio; - int is_8bit; - int pm_flags; -}; - -#endif -- cgit v1.2.3 From 3f6d078d4accfff8b114f968259a060bfdc7c682 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 24 Feb 2013 13:49:08 -0500 Subject: fix compat truncate/ftruncate Signed-off-by: Al Viro --- include/linux/compat.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/compat.h b/include/linux/compat.h index 59c72048bf20..76a87fb57ac2 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -536,6 +536,8 @@ asmlinkage long compat_sys_openat(int dfd, const char __user *filename, asmlinkage long compat_sys_open_by_handle_at(int mountdirfd, struct file_handle __user *handle, int flags); +asmlinkage long compat_sys_truncate(const char __user *, compat_off_t); +asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t); asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp, compat_ulong_t __user *outp, compat_ulong_t __user *exp, -- cgit v1.2.3 From 446d64e3e1154806092ac27de198dff1225797d9 Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Sun, 24 Feb 2013 23:42:37 -0500 Subject: block: fix part_pack_uuid() build error Commit "85865c1 ima: add policy support for file system uuid" introduced a CONFIG_BLOCK dependency. This patch defines a wrapper called blk_part_pack_uuid(), which returns -EINVAL, when CONFIG_BLOCK is not defined. security/integrity/ima/ima_policy.c:538:4: error: implicit declaration of function 'part_pack_uuid' [-Werror=implicit-function-declaration] Changelog v2: - Reference commit number in patch description Changelog v1: - rename ima_part_pack_uuid() to blk_part_pack_uuid() - resolve scripts/checkpatch.pl warnings Changelog v0: - fix UUID scripts/Lindent msgs Reported-by: Randy Dunlap Reported-by: David Rientjes Signed-off-by: Mimi Zohar Acked-by: David Rientjes Acked-by: Randy Dunlap Cc: Jens Axboe Signed-off-by: James Morris --- include/linux/genhd.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 79b8bba19363..9f3c275e053e 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -231,6 +231,12 @@ static inline void part_pack_uuid(const u8 *uuid_str, u8 *to) } } +static inline int blk_part_pack_uuid(const u8 *uuid_str, u8 *to) +{ + part_pack_uuid(uuid_str, to); + return 0; +} + static inline int disk_max_parts(struct gendisk *disk) { if (disk->flags & GENHD_FL_EXT_DEVT) @@ -718,6 +724,10 @@ static inline dev_t blk_lookup_devt(const char *name, int partno) return devt; } +static inline int blk_part_pack_uuid(const u8 *uuid_str, u8 *to) +{ + return -EINVAL; +} #endif /* CONFIG_BLOCK */ #endif /* _LINUX_GENHD_H */ -- cgit v1.2.3 From 804d6a89a5c0b076317966bcbcd7a63d42241831 Mon Sep 17 00:00:00 2001 From: Shani Michaeli Date: Wed, 6 Feb 2013 16:19:14 +0000 Subject: mlx4: Implement memory windows allocation and deallocation Implement MW allocation and deallocation in mlx4_core and mlx4_ib. Pass down the enable bind flag when registering memory regions. Signed-off-by: Haggai Eran Signed-off-by: Shani Michaeli Signed-off-by: Or Gerlitz Signed-off-by: Roland Dreier --- include/linux/mlx4/device.h | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index e9fe8caaf8bb..67b4695e5940 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -170,6 +170,7 @@ enum { #define MLX4_ATTR_EXTENDED_PORT_INFO cpu_to_be16(0xff90) enum { + MLX4_BMME_FLAG_WIN_TYPE_2B = 1 << 1, MLX4_BMME_FLAG_LOCAL_INV = 1 << 6, MLX4_BMME_FLAG_REMOTE_INV = 1 << 7, MLX4_BMME_FLAG_TYPE_2_WIN = 1 << 9, @@ -237,7 +238,8 @@ enum { MLX4_PERM_LOCAL_WRITE = 1 << 11, MLX4_PERM_REMOTE_READ = 1 << 12, MLX4_PERM_REMOTE_WRITE = 1 << 13, - MLX4_PERM_ATOMIC = 1 << 14 + MLX4_PERM_ATOMIC = 1 << 14, + MLX4_PERM_BIND_MW = 1 << 15, }; enum { @@ -503,6 +505,18 @@ struct mlx4_mr { int enabled; }; +enum mlx4_mw_type { + MLX4_MW_TYPE_1 = 1, + MLX4_MW_TYPE_2 = 2, +}; + +struct mlx4_mw { + u32 key; + u32 pd; + enum mlx4_mw_type type; + int enabled; +}; + struct mlx4_fmr { struct mlx4_mr mr; struct mlx4_mpt_entry *mpt; @@ -803,6 +817,10 @@ int mlx4_mr_alloc(struct mlx4_dev *dev, u32 pd, u64 iova, u64 size, u32 access, int npages, int page_shift, struct mlx4_mr *mr); int mlx4_mr_free(struct mlx4_dev *dev, struct mlx4_mr *mr); int mlx4_mr_enable(struct mlx4_dev *dev, struct mlx4_mr *mr); +int mlx4_mw_alloc(struct mlx4_dev *dev, u32 pd, enum mlx4_mw_type type, + struct mlx4_mw *mw); +void mlx4_mw_free(struct mlx4_dev *dev, struct mlx4_mw *mw); +int mlx4_mw_enable(struct mlx4_dev *dev, struct mlx4_mw *mw); int mlx4_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt, int start_index, int npages, u64 *page_list); int mlx4_buf_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt, -- cgit v1.2.3 From 6ff63e194066a1f14aee805366a1d79c541fddae Mon Sep 17 00:00:00 2001 From: Shani Michaeli Date: Wed, 6 Feb 2013 16:19:15 +0000 Subject: IB/mlx4: Support memory window binding * Implement memory windows binding in mlx4_ib_post_send. * Implement mlx4_ib_bind_mw by deferring to mlx4_ib_post_send. * Rename MLX4_WQE_FMR_PERM_* flags to MLX4_WQE_FMR_AND_BIND_PERM_*, indicating that they are used both for fast registration work requests, and for memory window bind work requests. Signed-off-by: Haggai Eran Signed-off-by: Shani Michaeli Signed-off-by: Or Gerlitz Signed-off-by: Roland Dreier --- include/linux/mlx4/qp.h | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mlx4/qp.h b/include/linux/mlx4/qp.h index 6c8a68c602be..67f46ad6920a 100644 --- a/include/linux/mlx4/qp.h +++ b/include/linux/mlx4/qp.h @@ -265,6 +265,11 @@ struct mlx4_wqe_lso_seg { __be32 header[0]; }; +enum mlx4_wqe_bind_seg_flags2 { + MLX4_WQE_BIND_ZERO_BASED = (1 << 30), + MLX4_WQE_BIND_TYPE_2 = (1 << 31), +}; + struct mlx4_wqe_bind_seg { __be32 flags1; __be32 flags2; @@ -277,9 +282,9 @@ struct mlx4_wqe_bind_seg { enum { MLX4_WQE_FMR_PERM_LOCAL_READ = 1 << 27, MLX4_WQE_FMR_PERM_LOCAL_WRITE = 1 << 28, - MLX4_WQE_FMR_PERM_REMOTE_READ = 1 << 29, - MLX4_WQE_FMR_PERM_REMOTE_WRITE = 1 << 30, - MLX4_WQE_FMR_PERM_ATOMIC = 1 << 31 + MLX4_WQE_FMR_AND_BIND_PERM_REMOTE_READ = 1 << 29, + MLX4_WQE_FMR_AND_BIND_PERM_REMOTE_WRITE = 1 << 30, + MLX4_WQE_FMR_AND_BIND_PERM_ATOMIC = 1 << 31 }; struct mlx4_wqe_fmr_seg { -- cgit v1.2.3 From e72837e3e7bae3f182c4ac63c9424e86f1158dd0 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 17 Feb 2013 17:47:04 -0500 Subject: default SET_PERSONALITY() in linux/elf.h Signed-off-by: Al Viro --- include/linux/elf.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/elf.h b/include/linux/elf.h index 8c9048e33463..40a3c0e01b2b 100644 --- a/include/linux/elf.h +++ b/include/linux/elf.h @@ -10,6 +10,10 @@ Override in asm/elf.h as needed. */ # define elf_read_implies_exec(ex, have_pt_gnu_stack) 0 #endif +#ifndef SET_PERSONALITY +#define SET_PERSONALITY(ex) \ + set_personality(PER_LINUX | (current->personality & (~PER_MASK))) +#endif #if ELF_CLASS == ELFCLASS32 -- cgit v1.2.3 From 3dadecce20603aa380023c65e6f55f108fd5e952 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 24 Jan 2013 02:18:08 -0500 Subject: switch vfs_getattr() to struct path Signed-off-by: Al Viro --- include/linux/fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 3ab69777b4d8..7f471520b88b 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2468,7 +2468,7 @@ extern int page_symlink(struct inode *inode, const char *symname, int len); extern const struct inode_operations page_symlink_inode_operations; extern int generic_readlink(struct dentry *, char __user *, int); extern void generic_fillattr(struct inode *, struct kstat *); -extern int vfs_getattr(struct vfsmount *, struct dentry *, struct kstat *); +extern int vfs_getattr(struct path *, struct kstat *); void __inode_add_bytes(struct inode *inode, loff_t bytes); void inode_add_bytes(struct inode *inode, loff_t bytes); void inode_sub_bytes(struct inode *inode, loff_t bytes); -- cgit v1.2.3 From ecf3d1f1aa74da0d632b651a2e05a911f60e92c0 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Wed, 20 Feb 2013 11:19:05 -0500 Subject: vfs: kill FS_REVAL_DOT by adding a d_weak_revalidate dentry op The following set of operations on a NFS client and server will cause server# mkdir a client# cd a server# mv a a.bak client# sleep 30 # (or whatever the dir attrcache timeout is) client# stat . stat: cannot stat `.': Stale NFS file handle Obviously, we should not be getting an ESTALE error back there since the inode still exists on the server. The problem is that the lookup code will call d_revalidate on the dentry that "." refers to, because NFS has FS_REVAL_DOT set. nfs_lookup_revalidate will see that the parent directory has changed and will try to reverify the dentry by redoing a LOOKUP. That of course fails, so the lookup code returns ESTALE. The problem here is that d_revalidate is really a bad fit for this case. What we really want to know at this point is whether the inode is still good or not, but we don't really care what name it goes by or whether the dcache is still valid. Add a new d_op->d_weak_revalidate operation and have complete_walk call that instead of d_revalidate. The intent there is to allow for a "weaker" d_revalidate that just checks to see whether the inode is still good. This is also gives us an opportunity to kill off the FS_REVAL_DOT special casing. [AV: changed method name, added note in porting, fixed confusion re having it possibly called from RCU mode (it won't be)] Cc: NeilBrown Signed-off-by: Jeff Layton Signed-off-by: Al Viro --- include/linux/dcache.h | 3 +++ include/linux/fs.h | 1 - 2 files changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dcache.h b/include/linux/dcache.h index 03d169288423..1a6bb81f0fe5 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -145,6 +145,7 @@ enum dentry_d_lock_class struct dentry_operations { int (*d_revalidate)(struct dentry *, unsigned int); + int (*d_weak_revalidate)(struct dentry *, unsigned int); int (*d_hash)(const struct dentry *, const struct inode *, struct qstr *); int (*d_compare)(const struct dentry *, const struct inode *, @@ -192,6 +193,8 @@ struct dentry_operations { #define DCACHE_GENOCIDE 0x0200 #define DCACHE_SHRINK_LIST 0x0400 +#define DCACHE_OP_WEAK_REVALIDATE 0x0800 + #define DCACHE_NFSFS_RENAMED 0x1000 /* this dentry has been "silly renamed" and has to be deleted on the last * dput() */ diff --git a/include/linux/fs.h b/include/linux/fs.h index 7f471520b88b..da94011ae83c 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1807,7 +1807,6 @@ struct file_system_type { #define FS_HAS_SUBTYPE 4 #define FS_USERNS_MOUNT 8 /* Can be mounted by userns root */ #define FS_USERNS_DEV_MOUNT 16 /* A userns mount does not imply MNT_NODEV */ -#define FS_REVAL_DOT 16384 /* Check the paths ".", ".." for staleness */ #define FS_RENAME_DOES_D_MOVE 32768 /* FS will handle d_move() during rename() internally. */ struct dentry *(*mount) (struct file_system_type *, int, const char *, void *); -- cgit v1.2.3 From 182be684784334598eee1d90274e7f7aa0063616 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 24 Jan 2013 02:21:54 -0500 Subject: kill f_vfsmnt very few users left... Signed-off-by: Al Viro --- include/linux/fs.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index da94011ae83c..c766afd1e684 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -769,7 +769,6 @@ struct file { } f_u; struct path f_path; #define f_dentry f_path.dentry -#define f_vfsmnt f_path.mnt const struct file_operations *f_op; /* -- cgit v1.2.3 From 7bb307e894d51308aa0582a8c4cc5875bbc645b9 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 23 Feb 2013 14:51:48 -0500 Subject: export kernel_write(), convert open-coded instances Signed-off-by: Al Viro --- include/linux/fs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index c766afd1e684..d858363a7c17 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2277,6 +2277,7 @@ static inline void i_readcount_inc(struct inode *inode) extern int do_pipe_flags(int *, int); extern int kernel_read(struct file *, loff_t, char *, unsigned long); +extern ssize_t kernel_write(struct file *, const char *, size_t, loff_t); extern struct file * open_exec(const char *); /* fs/dcache.c -- generic fs support functions */ -- cgit v1.2.3 From 9cc64ceaa8b8e8c874519caee79e18cb35d3ce3e Mon Sep 17 00:00:00 2001 From: Yuanhan Liu Date: Wed, 20 Feb 2013 13:16:01 +1100 Subject: fs/exec.c: make bprm_mm_init() static There is only one user of bprm_mm_init, and it's inside the same file. Signed-off-by: Yuanhan Liu Signed-off-by: Andrew Morton Signed-off-by: Al Viro --- include/linux/binfmts.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h index 0530b9860359..c3a09149f793 100644 --- a/include/linux/binfmts.h +++ b/include/linux/binfmts.h @@ -111,7 +111,6 @@ extern int suid_dumpable; extern int setup_arg_pages(struct linux_binprm * bprm, unsigned long stack_top, int executable_stack); -extern int bprm_mm_init(struct linux_binprm *bprm); extern int bprm_change_interp(char *interp, struct linux_binprm *bprm); extern int copy_strings_kernel(int argc, const char *const *argv, struct linux_binprm *bprm); -- cgit v1.2.3 From 46c498c2cdee5efe44f617bcd4f388179be36115 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 26 Feb 2013 18:44:33 +0100 Subject: stop_machine: Mark per cpu stopper enabled early commit 14e568e78 (stop_machine: Use smpboot threads) introduced the following regression: Before this commit the stopper enabled bit was set in the online notifier. CPU0 CPU1 cpu_up cpu online hotplug_notifier(ONLINE) stopper(CPU1)->enabled = true; ... stop_machine() The conversion to smpboot threads moved the enablement to the wakeup path of the parked thread. The majority of users seem to have the following working order: CPU0 CPU1 cpu_up cpu online unpark_threads() wakeup(stopper[CPU1]) .... stopper thread runs stopper(CPU1)->enabled = true; stop_machine() But Konrad and Sander have observed: CPU0 CPU1 cpu_up cpu online unpark_threads() wakeup(stopper[CPU1]) .... stop_machine() stopper thread runs stopper(CPU1)->enabled = true; Now the stop machinery kicks CPU0 into the stop loop, where it gets stuck forever because the queue code saw stopper(CPU1)->enabled == false, so CPU0 waits for CPU1 to enter stomp_machine, but the CPU1 stopper work got discarded due to enabled == false. Add a pre_unpark function to the smpboot thread descriptor and call it before waking the thread. This fixes the problem at hand, but the stop_machine code should be more robust. The stopper->enabled flag smells fishy at best. Thanks to Konrad for going through a loop of debug patches and providing the information to decode this issue. Reported-and-tested-by: Konrad Rzeszutek Wilk Reported-and-tested-by: Sander Eikelenboom Cc: Srivatsa S. Bhat Cc: Rusty Russell Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1302261843240.22263@ionos Signed-off-by: Thomas Gleixner --- include/linux/smpboot.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/smpboot.h b/include/linux/smpboot.h index c65dee059913..13e929679550 100644 --- a/include/linux/smpboot.h +++ b/include/linux/smpboot.h @@ -24,6 +24,9 @@ struct smpboot_thread_data; * parked (cpu offline) * @unpark: Optional unpark function, called when the thread is * unparked (cpu online) + * @pre_unpark: Optional unpark function, called before the thread is + * unparked (cpu online). This is not guaranteed to be + * called on the target cpu of the thread. Careful! * @selfparking: Thread is not parked by the park function. * @thread_comm: The base name of the thread */ @@ -37,6 +40,7 @@ struct smp_hotplug_thread { void (*cleanup)(unsigned int cpu, bool online); void (*park)(unsigned int cpu); void (*unpark)(unsigned int cpu); + void (*pre_unpark)(unsigned int cpu); bool selfparking; const char *thread_comm; }; -- cgit v1.2.3 From 12979354a1d6ef25d86f381e4d5f9e103f29913a Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Tue, 8 Jan 2013 09:15:10 -0800 Subject: libceph: rename ceph_pg -> ceph_pg_v1 Rename the old version this type to distinguish it from the new version. Signed-off-by: Sage Weil Reviewed-by: Alex Elder --- include/linux/ceph/osd_client.h | 2 +- include/linux/ceph/osdmap.h | 7 ++++--- include/linux/ceph/rados.h | 4 ++-- 3 files changed, 7 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 388158ff0cbc..be2867330e23 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -56,7 +56,7 @@ struct ceph_osd_request { struct list_head r_linger_item; struct list_head r_linger_osd; struct ceph_osd *r_osd; - struct ceph_pg r_pgid; + struct ceph_pg_v1 r_pgid; int r_pg_osds[CEPH_PG_MAX_SIZE]; int r_num_pg_osds; diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h index c83a838f89f5..eb4989aa48e8 100644 --- a/include/linux/ceph/osdmap.h +++ b/include/linux/ceph/osdmap.h @@ -28,7 +28,7 @@ struct ceph_pg_pool_info { struct ceph_pg_mapping { struct rb_node node; - struct ceph_pg pgid; + struct ceph_pg_v1 pgid; int len; int osds[]; }; @@ -118,10 +118,11 @@ extern int ceph_calc_object_layout(struct ceph_object_layout *ol, const char *oid, struct ceph_file_layout *fl, struct ceph_osdmap *osdmap); -extern int ceph_calc_pg_acting(struct ceph_osdmap *osdmap, struct ceph_pg pgid, +extern int ceph_calc_pg_acting(struct ceph_osdmap *osdmap, + struct ceph_pg_v1 pgid, int *acting); extern int ceph_calc_pg_primary(struct ceph_osdmap *osdmap, - struct ceph_pg pgid); + struct ceph_pg_v1 pgid); extern const char *ceph_pg_pool_name_by_id(struct ceph_osdmap *map, u64 id); extern int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char *name); diff --git a/include/linux/ceph/rados.h b/include/linux/ceph/rados.h index b65182aba6f7..e7cece69b13f 100644 --- a/include/linux/ceph/rados.h +++ b/include/linux/ceph/rados.h @@ -64,7 +64,7 @@ struct ceph_timespec { * placement group. * we encode this into one __le64. */ -struct ceph_pg { +struct ceph_pg_v1 { __le16 preferred; /* preferred primary osd */ __le16 ps; /* placement seed */ __le32 pool; /* object pool */ @@ -128,7 +128,7 @@ static inline int ceph_stable_mod(int x, int b, int bmask) * object layout - how a given object should be stored. */ struct ceph_object_layout { - struct ceph_pg ol_pgid; /* raw pg, with _full_ ps precision. */ + struct ceph_pg_v1 ol_pgid; /* raw pg, with _full_ ps precision. */ __le32 ol_stripe_unit; /* for per-object parity, if any */ } __attribute__ ((packed)); -- cgit v1.2.3 From 5b191d9914eb68257f47de9d5bfe099b77f0687c Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Sat, 23 Feb 2013 10:38:16 -0800 Subject: libceph: decode into cpu-native ceph_pg type Always decode data into our cpu-native ceph_pg type that has the correct field widths. Limit any remaining uses of ceph_pg_v1 to dealing with the legacy protocol. Signed-off-by: Sage Weil Reviewed-by: Alex Elder --- include/linux/ceph/osd_client.h | 2 +- include/linux/ceph/osdmap.h | 11 ++++++++--- 2 files changed, 9 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index be2867330e23..388158ff0cbc 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -56,7 +56,7 @@ struct ceph_osd_request { struct list_head r_linger_item; struct list_head r_linger_osd; struct ceph_osd *r_osd; - struct ceph_pg_v1 r_pgid; + struct ceph_pg r_pgid; int r_pg_osds[CEPH_PG_MAX_SIZE]; int r_num_pg_osds; diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h index eb4989aa48e8..8a612df4c248 100644 --- a/include/linux/ceph/osdmap.h +++ b/include/linux/ceph/osdmap.h @@ -18,6 +18,11 @@ * The map can be updated either via an incremental map (diff) describing * the change between two successive epochs, or as a fully encoded map. */ +struct ceph_pg { + uint64_t pool; + uint32_t seed; +}; + struct ceph_pg_pool_info { struct rb_node node; int id; @@ -28,7 +33,7 @@ struct ceph_pg_pool_info { struct ceph_pg_mapping { struct rb_node node; - struct ceph_pg_v1 pgid; + struct ceph_pg pgid; int len; int osds[]; }; @@ -119,10 +124,10 @@ extern int ceph_calc_object_layout(struct ceph_object_layout *ol, struct ceph_file_layout *fl, struct ceph_osdmap *osdmap); extern int ceph_calc_pg_acting(struct ceph_osdmap *osdmap, - struct ceph_pg_v1 pgid, + struct ceph_pg pgid, int *acting); extern int ceph_calc_pg_primary(struct ceph_osdmap *osdmap, - struct ceph_pg_v1 pgid); + struct ceph_pg pgid); extern const char *ceph_pg_pool_name_by_id(struct ceph_osdmap *map, u64 id); extern int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char *name); -- cgit v1.2.3 From ec73a754989c27628c9037887df919561280519c Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Tue, 26 Feb 2013 14:23:07 -0600 Subject: ceph: update "ceph_features.h" This updates "include/linux/ceph/ceph_features.h" so all the feature bits defined in the user space code are defined here. The features supported by this implementation will still differ so that's not updated here. Signed-off-by: Alex Elder Reviewed-by: Sage Weil --- include/linux/ceph/ceph_features.h | 24 ++++++++++++++++++++---- 1 file changed, 20 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/ceph_features.h b/include/linux/ceph/ceph_features.h index 2160aab482f6..9e0f5a8ba247 100644 --- a/include/linux/ceph/ceph_features.h +++ b/include/linux/ceph/ceph_features.h @@ -12,12 +12,28 @@ #define CEPH_FEATURE_MONNAMES (1<<5) #define CEPH_FEATURE_RECONNECT_SEQ (1<<6) #define CEPH_FEATURE_DIRLAYOUTHASH (1<<7) -/* bits 8-17 defined by user-space; not supported yet here */ +#define CEPH_FEATURE_OBJECTLOCATOR (1<<8) +#define CEPH_FEATURE_PGID64 (1<<9) +#define CEPH_FEATURE_INCSUBOSDMAP (1<<10) +#define CEPH_FEATURE_PGPOOL3 (1<<11) +#define CEPH_FEATURE_OSDREPLYMUX (1<<12) +#define CEPH_FEATURE_OSDENC (1<<13) +#define CEPH_FEATURE_OMAP (1<<14) +#define CEPH_FEATURE_MONENC (1<<15) +#define CEPH_FEATURE_QUERY_T (1<<16) +#define CEPH_FEATURE_INDEP_PG_MAP (1<<17) #define CEPH_FEATURE_CRUSH_TUNABLES (1<<18) -/* bits 19-24 defined by user-space; not supported yet here */ +#define CEPH_FEATURE_CHUNKY_SCRUB (1<<19) +#define CEPH_FEATURE_MON_NULLROUTE (1<<20) +#define CEPH_FEATURE_MON_GV (1<<21) +#define CEPH_FEATURE_BACKFILL_RESERVATION (1<<22) +#define CEPH_FEATURE_MSG_AUTH (1<<23) +#define CEPH_FEATURE_RECOVERY_RESERVATION (1<<24) #define CEPH_FEATURE_CRUSH_TUNABLES2 (1<<25) -/* bit 26 defined by user-space; not supported yet here */ -#define CEPH_FEATURE_REPLY_CREATE_INODE (1<<27) +#define CEPH_FEATURE_CREATEPOOLID (1<<26) +#define CEPH_FEATURE_REPLY_CREATE_INODE (1<<27) +#define CEPH_FEATURE_OSD_HBMSGS (1<<28) +#define CEPH_FEATURE_MDSENC (1<<29) /* * Features supported. -- cgit v1.2.3 From 4f6a7e5ee1393ec4b243b39dac9f36992d161540 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Sat, 23 Feb 2013 10:41:09 -0800 Subject: ceph: update support for PGID64, PGPOOL3, OSDENC protocol features Support (and require) the PGID64, PGPOOL3, and OSDENC protocol features. These have been present in ceph.git since v0.42, Feb 2012. Require these features to simplify support; nobody is running older userspace. Note that the new request and reply encoding is still not in place, so the new code is not yet functional. Signed-off-by: Sage Weil Reviewed-by: Alex Elder --- include/linux/ceph/ceph_features.h | 14 ++++++++++---- include/linux/ceph/mdsmap.h | 4 ++-- include/linux/ceph/osdmap.h | 16 +++++++++++++--- include/linux/ceph/rados.h | 23 ----------------------- 4 files changed, 25 insertions(+), 32 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/ceph_features.h b/include/linux/ceph/ceph_features.h index 9e0f5a8ba247..ab0a54286e0d 100644 --- a/include/linux/ceph/ceph_features.h +++ b/include/linux/ceph/ceph_features.h @@ -39,11 +39,17 @@ * Features supported. */ #define CEPH_FEATURES_SUPPORTED_DEFAULT \ - (CEPH_FEATURE_NOSRCADDR | \ - CEPH_FEATURE_CRUSH_TUNABLES | \ - CEPH_FEATURE_CRUSH_TUNABLES2 | \ + (CEPH_FEATURE_NOSRCADDR | \ + CEPH_FEATURE_PGID64 | \ + CEPH_FEATURE_PGPOOL3 | \ + CEPH_FEATURE_OSDENC | \ + CEPH_FEATURE_CRUSH_TUNABLES | \ + CEPH_FEATURE_CRUSH_TUNABLES2 | \ CEPH_FEATURE_REPLY_CREATE_INODE) #define CEPH_FEATURES_REQUIRED_DEFAULT \ - (CEPH_FEATURE_NOSRCADDR) + (CEPH_FEATURE_NOSRCADDR | \ + CEPH_FEATURE_PGID64 | \ + CEPH_FEATURE_PGPOOL3 | \ + CEPH_FEATURE_OSDENC) #endif diff --git a/include/linux/ceph/mdsmap.h b/include/linux/ceph/mdsmap.h index cb15b5d867c7..87ed09f54800 100644 --- a/include/linux/ceph/mdsmap.h +++ b/include/linux/ceph/mdsmap.h @@ -29,8 +29,8 @@ struct ceph_mdsmap { /* which object pools file data can be stored in */ int m_num_data_pg_pools; - u32 *m_data_pg_pools; - u32 m_cas_pg_pool; + u64 *m_data_pg_pools; + u64 m_cas_pg_pool; }; static inline struct ceph_entity_addr * diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h index 8a612df4c248..8587746b7f0e 100644 --- a/include/linux/ceph/osdmap.h +++ b/include/linux/ceph/osdmap.h @@ -25,12 +25,22 @@ struct ceph_pg { struct ceph_pg_pool_info { struct rb_node node; - int id; - struct ceph_pg_pool v; - int pg_num_mask, pgp_num_mask, lpg_num_mask, lpgp_num_mask; + s64 id; + u8 type; + u8 size; + u8 crush_ruleset; + u8 object_hash; + u32 pg_num, pgp_num; + int pg_num_mask, pgp_num_mask; + u64 flags; char *name; }; +struct ceph_object_locator { + uint64_t pool; + char *key; +}; + struct ceph_pg_mapping { struct rb_node node; struct ceph_pg pgid; diff --git a/include/linux/ceph/rados.h b/include/linux/ceph/rados.h index e7cece69b13f..d784c8dfb09a 100644 --- a/include/linux/ceph/rados.h +++ b/include/linux/ceph/rados.h @@ -8,14 +8,6 @@ #include -/* - * osdmap encoding versions - */ -#define CEPH_OSDMAP_INC_VERSION 5 -#define CEPH_OSDMAP_INC_VERSION_EXT 6 -#define CEPH_OSDMAP_VERSION 5 -#define CEPH_OSDMAP_VERSION_EXT 6 - /* * fs id */ @@ -91,21 +83,6 @@ struct ceph_pg_v1 { #define CEPH_PG_TYPE_REP 1 #define CEPH_PG_TYPE_RAID4 2 -#define CEPH_PG_POOL_VERSION 2 -struct ceph_pg_pool { - __u8 type; /* CEPH_PG_TYPE_* */ - __u8 size; /* number of osds in each pg */ - __u8 crush_ruleset; /* crush placement rule */ - __u8 object_hash; /* hash mapping object name to ps */ - __le32 pg_num, pgp_num; /* number of pg's */ - __le32 lpg_num, lpgp_num; /* number of localized pg's */ - __le32 last_change; /* most recent epoch changed */ - __le64 snap_seq; /* seq for per-pool snapshot */ - __le32 snap_epoch; /* epoch of last snap */ - __le32 num_snaps; - __le32 num_removed_snap_intervals; /* if non-empty, NO per-pool snaps */ - __le64 auid; /* who owns the pg */ -} __attribute__ ((packed)); /* * stable_mod func is used to control number of placement groups. -- cgit v1.2.3 From 2169aea649c08374bec7d220a3b8f64712275356 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Mon, 25 Feb 2013 16:13:08 -0800 Subject: libceph: calculate placement based on the internal data types Instead of using the old ceph_object_layout struct, update our internal ceph_calc_object_layout method to use the ceph_pg type. This allows us to pass the full 32-bit precision of the pgid.seed to the callers. It also allows some callers to avoid reaching into the request structures for the struct ceph_object_layout fields. Signed-off-by: Sage Weil Reviewed-by: Alex Elder --- include/linux/ceph/osd_client.h | 1 + include/linux/ceph/osdmap.h | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 388158ff0cbc..ad8899fc3157 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -82,6 +82,7 @@ struct ceph_osd_request { char r_oid[MAX_OBJ_NAME_SIZE]; /* object name */ int r_oid_len; + u64 r_snapid; unsigned long r_stamp; /* send OR check time */ struct ceph_file_layout r_file_layout; diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h index 8587746b7f0e..35985125f118 100644 --- a/include/linux/ceph/osdmap.h +++ b/include/linux/ceph/osdmap.h @@ -129,7 +129,7 @@ extern int ceph_calc_file_object_mapping(struct ceph_file_layout *layout, u64 *bno, u64 *oxoff, u64 *oxlen); /* calculate mapping of object to a placement group */ -extern int ceph_calc_object_layout(struct ceph_object_layout *ol, +extern int ceph_calc_object_layout(struct ceph_pg *pg, const char *oid, struct ceph_file_layout *fl, struct ceph_osdmap *osdmap); -- cgit v1.2.3 From 1b83bef24c6746a146d39915a18fb5425f2facb0 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Mon, 25 Feb 2013 16:11:12 -0800 Subject: libceph: update osd request/reply encoding Use the new version of the encoding for osd requests and replies. In the process, update the way we are tracking request ops and reply lengths and results in the struct ceph_osd_request. Update the rbd and fs/ceph users appropriately. The main changes are: - we keep pointers into the request memory for fields we need to update each time the request is sent out over the wire - we keep information about the result in an array in the request struct where the users can easily get at it. Signed-off-by: Sage Weil Reviewed-by: Alex Elder --- include/linux/ceph/osd_client.h | 19 ++++++++++++++++++- include/linux/ceph/rados.h | 38 -------------------------------------- 2 files changed, 18 insertions(+), 39 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index ad8899fc3157..1dd5d466b6f9 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -47,6 +47,9 @@ struct ceph_osd { struct list_head o_keepalive_item; }; + +#define CEPH_OSD_MAX_OP 10 + /* an in-flight request */ struct ceph_osd_request { u64 r_tid; /* unique for this client */ @@ -63,9 +66,23 @@ struct ceph_osd_request { struct ceph_connection *r_con_filling_msg; struct ceph_msg *r_request, *r_reply; - int r_result; int r_flags; /* any additional flags for the osd */ u32 r_sent; /* >0 if r_request is sending/sent */ + int r_num_ops; + + /* encoded message content */ + struct ceph_osd_op *r_request_ops; + /* these are updated on each send */ + __le32 *r_request_osdmap_epoch; + __le32 *r_request_flags; + __le64 *r_request_pool; + void *r_request_pgid; + __le32 *r_request_attempts; + struct ceph_eversion *r_request_reassert_version; + + int r_result; + int r_reply_op_len[CEPH_OSD_MAX_OP]; + s32 r_reply_op_result[CEPH_OSD_MAX_OP]; int r_got_reply; int r_linger; diff --git a/include/linux/ceph/rados.h b/include/linux/ceph/rados.h index d784c8dfb09a..68c96a508ac2 100644 --- a/include/linux/ceph/rados.h +++ b/include/linux/ceph/rados.h @@ -416,43 +416,5 @@ struct ceph_osd_op { __le32 payload_len; } __attribute__ ((packed)); -/* - * osd request message header. each request may include multiple - * ceph_osd_op object operations. - */ -struct ceph_osd_request_head { - __le32 client_inc; /* client incarnation */ - struct ceph_object_layout layout; /* pgid */ - __le32 osdmap_epoch; /* client's osdmap epoch */ - - __le32 flags; - - struct ceph_timespec mtime; /* for mutations only */ - struct ceph_eversion reassert_version; /* if we are replaying op */ - - __le32 object_len; /* length of object name */ - - __le64 snapid; /* snapid to read */ - __le64 snap_seq; /* writer's snap context */ - __le32 num_snaps; - - __le16 num_ops; - struct ceph_osd_op ops[]; /* followed by ops[], obj, ticket, snaps */ -} __attribute__ ((packed)); - -struct ceph_osd_reply_head { - __le32 client_inc; /* client incarnation */ - __le32 flags; - struct ceph_object_layout layout; - __le32 osdmap_epoch; - struct ceph_eversion reassert_version; /* for replaying uncommitted */ - - __le32 result; /* result code */ - - __le32 object_len; /* length of object name */ - __le32 num_ops; - struct ceph_osd_op ops[0]; /* ops[], object */ -} __attribute__ ((packed)); - #endif -- cgit v1.2.3 From 83ca14fdd35821554058e5fd4fa7b118ee504a33 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Tue, 26 Feb 2013 10:39:09 -0800 Subject: libceph: add support for HASHPSPOOL pool flag The legacy behavior adds the pgid seed and pool together as the input for CRUSH. That is problematic because each pool's PGs end up mapping to the same OSDs: 1.5 == 2.4 == 3.3 == ... Instead, if the HASHPSPOOL flag is set, we has the ps and pool together and feed that into CRUSH. This ensures that two adjacent pools will map to an independent pseudorandom set of OSDs. Advertise our support for this via a protocol feature flag. Signed-off-by: Sage Weil Reviewed-by: Alex Elder --- include/linux/ceph/ceph_features.h | 4 +++- include/linux/ceph/osdmap.h | 2 ++ 2 files changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ceph/ceph_features.h b/include/linux/ceph/ceph_features.h index ab0a54286e0d..76554cecaab2 100644 --- a/include/linux/ceph/ceph_features.h +++ b/include/linux/ceph/ceph_features.h @@ -34,6 +34,7 @@ #define CEPH_FEATURE_REPLY_CREATE_INODE (1<<27) #define CEPH_FEATURE_OSD_HBMSGS (1<<28) #define CEPH_FEATURE_MDSENC (1<<29) +#define CEPH_FEATURE_OSDHASHPSPOOL (1<<30) /* * Features supported. @@ -45,7 +46,8 @@ CEPH_FEATURE_OSDENC | \ CEPH_FEATURE_CRUSH_TUNABLES | \ CEPH_FEATURE_CRUSH_TUNABLES2 | \ - CEPH_FEATURE_REPLY_CREATE_INODE) + CEPH_FEATURE_REPLY_CREATE_INODE | \ + CEPH_FEATURE_OSDHASHPSPOOL) #define CEPH_FEATURES_REQUIRED_DEFAULT \ (CEPH_FEATURE_NOSRCADDR | \ diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h index 35985125f118..c819190d1642 100644 --- a/include/linux/ceph/osdmap.h +++ b/include/linux/ceph/osdmap.h @@ -23,6 +23,8 @@ struct ceph_pg { uint32_t seed; }; +#define CEPH_POOL_FLAG_HASHPSPOOL 1 + struct ceph_pg_pool_info { struct rb_node node; s64 id; -- cgit v1.2.3 From f00b4dad9d9eb001a04cf72e8351a2a1b9e99322 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Thu, 20 Dec 2012 14:14:23 +0100 Subject: dma-buf: implement vmap refcounting in the interface logic All drivers which implement this need to have some sort of refcount to allow concurrent vmap usage. Hence implement this in the dma-buf core. To protect against concurrent calls we need a lock, which potentially causes new funny locking inversions. But this shouldn't be a problem for exporters with statically allocated backing storage, and more dynamic drivers have decent issues already anyway. Inspired by some refactoring patches from Aaron Plattner, who implemented the same idea, but only for drm/prime drivers. v2: Check in dma_buf_release that no dangling vmaps are left. Suggested by Aaron Plattner. We might want to do similar checks for attachments, but that's for another patch. Also fix up ERR_PTR return for vmap. v3: Check whether the passed-in vmap address matches with the cached one for vunmap. Eventually we might want to remove that parameter - compared to the kmap functions there's no need for the vaddr for unmapping. Suggested by Chris Wilson. v4: Fix a brown-paper-bag bug spotted by Aaron Plattner. Cc: Aaron Plattner Reviewed-by: Aaron Plattner Tested-by: Aaron Plattner Reviewed-by: Rob Clark Signed-off-by: Daniel Vetter Signed-off-by: Sumit Semwal --- include/linux/dma-buf.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h index 3d754a394e92..9978b614a1aa 100644 --- a/include/linux/dma-buf.h +++ b/include/linux/dma-buf.h @@ -119,8 +119,10 @@ struct dma_buf { struct file *file; struct list_head attachments; const struct dma_buf_ops *ops; - /* mutex to serialize list manipulation and attach/detach */ + /* mutex to serialize list manipulation, attach/detach and vmap/unmap */ struct mutex lock; + unsigned vmapping_counter; + void *vmap_ptr; void *priv; }; -- cgit v1.2.3 From 864ef69b2d9b34e7c85baa9c5c601d5e735b208a Mon Sep 17 00:00:00 2001 From: Matt Porter Date: Fri, 1 Feb 2013 18:22:52 +0000 Subject: dmaengine: add dma_request_slave_channel_compat() Adds a dma_request_slave_channel_compat() wrapper which accepts both the arguments from dma_request_channel() and dma_request_slave_channel(). Based on whether the driver is instantiated via DT, the appropriate channel request call will be made. This allows for a much cleaner migration of drivers to the dmaengine DT API as platforms continue to be mixed between those that boot using DT and those that do not. Suggested-by: Tony Lindgren Signed-off-by: Matt Porter Acked-by: Tony Lindgren Acked-by: Arnd Bergmann Signed-off-by: Vinod Koul --- include/linux/dmaengine.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include/linux') diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index f5939999cb65..91ac8da25020 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -1001,6 +1001,22 @@ void dma_run_dependencies(struct dma_async_tx_descriptor *tx); struct dma_chan *dma_find_channel(enum dma_transaction_type tx_type); struct dma_chan *net_dma_find_channel(void); #define dma_request_channel(mask, x, y) __dma_request_channel(&(mask), x, y) +#define dma_request_slave_channel_compat(mask, x, y, dev, name) \ + __dma_request_slave_channel_compat(&(mask), x, y, dev, name) + +static inline struct dma_chan +*__dma_request_slave_channel_compat(dma_cap_mask_t *mask, dma_filter_fn fn, + void *fn_param, struct device *dev, + char *name) +{ + struct dma_chan *chan; + + chan = dma_request_slave_channel(dev, name); + if (chan) + return chan; + + return __dma_request_channel(mask, fn, fn_param); +} /* --- Helper iov-locking functions --- */ -- cgit v1.2.3 From c5a51053cf3b499ddba60a89ab067ea05ad15840 Mon Sep 17 00:00:00 2001 From: "Kim, Milo" Date: Wed, 27 Feb 2013 17:02:43 -0800 Subject: backlight: add new lp8788 backlight driver TI LP8788 PMU supports regulators, battery charger, RTC, ADC, backlight dri= ver and current sinks. This patch enables LP8788 backlight module. (Brightness mode) The brightness is controlled by PWM input or I2C register. All modes are supported in the driver. (Platform data) Configurable data can be defined in the platform side. name : backlight driver name. (default: "lcd-backlight") initial_brightness : initial value of backlight brightness bl_mode : brightness control by PWM or lp8788 register dim_mode : dimming mode selection full_scale : full scale current setting rise_time : brightness ramp up step time fall_time : brightness ramp down step time pwm_pol : PWM polarity setting when bl_mode is PWM based period_ns : platform specific PWM period value. unit is nano. The default values are set in case no platform data is defined. [akpm@linux-foundation.org: checkpatch fixes] Signed-off-by: Milo(Woogyom) Kim Cc: Richard Purdie Cc: Samuel Ortiz Cc: Thierry Reding Cc: "devendra.aaru" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mfd/lp8788.h | 24 +++++------------------- 1 file changed, 5 insertions(+), 19 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/lp8788.h b/include/linux/mfd/lp8788.h index 2a32b16f79cb..786bf6679a28 100644 --- a/include/linux/mfd/lp8788.h +++ b/include/linux/mfd/lp8788.h @@ -16,6 +16,7 @@ #include #include +#include #include #define LP8788_DEV_BUCK "lp8788-buck" @@ -124,11 +125,6 @@ enum lp8788_bl_ramp_step { LP8788_RAMP_65538us, }; -enum lp8788_bl_pwm_polarity { - LP8788_PWM_ACTIVE_HIGH, - LP8788_PWM_ACTIVE_LOW, -}; - enum lp8788_isink_scale { LP8788_ISINK_SCALE_100mA, LP8788_ISINK_SCALE_120mA, @@ -228,16 +224,6 @@ struct lp8788_charger_platform_data { enum lp8788_charger_event event); }; -/* - * struct lp8788_bl_pwm_data - * @pwm_set_intensity : set duty of pwm - * @pwm_get_intensity : get current duty of pwm - */ -struct lp8788_bl_pwm_data { - void (*pwm_set_intensity) (int brightness, int max_brightness); - int (*pwm_get_intensity) (int max_brightness); -}; - /* * struct lp8788_backlight_platform_data * @name : backlight driver name. (default: "lcd-backlight") @@ -248,8 +234,8 @@ struct lp8788_bl_pwm_data { * @rise_time : brightness ramp up step time * @fall_time : brightness ramp down step time * @pwm_pol : pwm polarity setting when bl_mode is pwm based - * @pwm_data : platform specific pwm generation functions - * only valid when bl_mode is pwm based + * @period_ns : platform specific pwm period value. unit is nano. + Only valid when bl_mode is LP8788_BL_COMB_PWM_BASED */ struct lp8788_backlight_platform_data { char *name; @@ -259,8 +245,8 @@ struct lp8788_backlight_platform_data { enum lp8788_bl_full_scale_current full_scale; enum lp8788_bl_ramp_step rise_time; enum lp8788_bl_ramp_step fall_time; - enum lp8788_bl_pwm_polarity pwm_pol; - struct lp8788_bl_pwm_data pwm_data; + enum pwm_polarity pwm_pol; + unsigned int period_ns; }; /* -- cgit v1.2.3 From a321e91b6d73ed011ffceed384c40d2785cf723b Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Wed, 27 Feb 2013 17:02:56 -0800 Subject: lib/scatterlist: add simple page iterator Add an iterator to walk through a scatter list a page at a time starting at a specific page offset. As opposed to the mapping iterator this is meant to be small, performing well even in simple loops like collecting all pages on the scatterlist into an array or setting up an iommu table based on the pages' DMA address. Signed-off-by: Imre Deak Cc: Maxim Levitsky Cc: Tejun Heo Cc: Daniel Vetter Tested-by: Stephen Warren Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/scatterlist.h | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) (limited to 'include/linux') diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h index 4bd6c06eb28e..788a853aa7a7 100644 --- a/include/linux/scatterlist.h +++ b/include/linux/scatterlist.h @@ -231,6 +231,41 @@ size_t sg_copy_to_buffer(struct scatterlist *sgl, unsigned int nents, */ #define SG_MAX_SINGLE_ALLOC (PAGE_SIZE / sizeof(struct scatterlist)) +/* + * sg page iterator + * + * Iterates over sg entries page-by-page. On each successful iteration, + * @piter->page points to the current page, @piter->sg to the sg holding this + * page and @piter->sg_pgoffset to the page's page offset within the sg. The + * iteration will stop either when a maximum number of sg entries was reached + * or a terminating sg (sg_last(sg) == true) was reached. + */ +struct sg_page_iter { + struct page *page; /* current page */ + struct scatterlist *sg; /* sg holding the page */ + unsigned int sg_pgoffset; /* page offset within the sg */ + + /* these are internal states, keep away */ + unsigned int __nents; /* remaining sg entries */ + int __pg_advance; /* nr pages to advance at the + * next step */ +}; + +bool __sg_page_iter_next(struct sg_page_iter *piter); +void __sg_page_iter_start(struct sg_page_iter *piter, + struct scatterlist *sglist, unsigned int nents, + unsigned long pgoffset); + +/** + * for_each_sg_page - iterate over the pages of the given sg list + * @sglist: sglist to iterate over + * @piter: page iterator to hold current page, sg, sg_pgoffset + * @nents: maximum number of sg entries to iterate over + * @pgoffset: starting page offset + */ +#define for_each_sg_page(sglist, piter, nents, pgoffset) \ + for (__sg_page_iter_start((piter), (sglist), (nents), (pgoffset)); \ + __sg_page_iter_next(piter);) /* * Mapping sg iterator -- cgit v1.2.3 From 4225fc8555a992c7f91d174ef424384d6781e144 Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Wed, 27 Feb 2013 17:02:57 -0800 Subject: lib/scatterlist: use page iterator in the mapping iterator For better code reuse use the newly added page iterator to iterate through the pages. The offset, length within the page is still calculated by the mapping iterator as well as the actual mapping. Idea from Tejun Heo. Signed-off-by: Imre Deak Cc: Maxim Levitsky Cc: Tejun Heo Cc: Daniel Vetter Cc: James Hogan Cc: Stephen Warren Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/scatterlist.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h index 788a853aa7a7..2d8bdaef9611 100644 --- a/include/linux/scatterlist.h +++ b/include/linux/scatterlist.h @@ -293,11 +293,11 @@ struct sg_mapping_iter { void *addr; /* pointer to the mapped area */ size_t length; /* length of the mapped area */ size_t consumed; /* number of consumed bytes */ + struct sg_page_iter piter; /* page iterator */ /* these are internal states, keep away */ - struct scatterlist *__sg; /* current entry */ - unsigned int __nents; /* nr of remaining entries */ - unsigned int __offset; /* offset within sg */ + unsigned int __offset; /* offset within page */ + unsigned int __remaining; /* remaining bytes on page */ unsigned int __flags; }; -- cgit v1.2.3 From e579d2c259be42b6f29458327e5153b22414b031 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 27 Feb 2013 17:03:15 -0800 Subject: coredump: remove redundant defines for dumpable states The existing SUID_DUMP_* defines duplicate the newer SUID_DUMPABLE_* defines introduced in 54b501992dd2 ("coredump: warn about unsafe suid_dumpable / core_pattern combo"). Remove the new ones, and use the prior values instead. Signed-off-by: Kees Cook Reported-by: Chen Gang Cc: Alexander Viro Cc: Alan Cox Cc: "Eric W. Biederman" Cc: Doug Ledford Cc: Serge Hallyn Cc: James Morris Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sched.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 6853bf947fde..d35d2b6ddbfb 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -346,11 +346,6 @@ static inline void arch_pick_mmap_layout(struct mm_struct *mm) {} extern void set_dumpable(struct mm_struct *mm, int value); extern int get_dumpable(struct mm_struct *mm); -/* get/set_dumpable() values */ -#define SUID_DUMPABLE_DISABLED 0 -#define SUID_DUMPABLE_ENABLED 1 -#define SUID_DUMPABLE_SAFE 2 - /* mm flags */ /* dumpable bits */ #define MMF_DUMPABLE 0 /* core dump is permitted */ -- cgit v1.2.3 From 6aa9707099c4b25700940eb3d016f16c4434360d Mon Sep 17 00:00:00 2001 From: Mandeep Singh Baines Date: Wed, 27 Feb 2013 17:03:18 -0800 Subject: lockdep: check that no locks held at freeze time We shouldn't try_to_freeze if locks are held. Holding a lock can cause a deadlock if the lock is later acquired in the suspend or hibernate path (e.g. by dpm). Holding a lock can also cause a deadlock in the case of cgroup_freezer if a lock is held inside a frozen cgroup that is later acquired by a process outside that group. [akpm@linux-foundation.org: export debug_check_no_locks_held] Signed-off-by: Mandeep Singh Baines Cc: Ben Chan Cc: Oleg Nesterov Cc: Tejun Heo Cc: Rafael J. Wysocki Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/debug_locks.h | 4 ++-- include/linux/freezer.h | 3 +++ 2 files changed, 5 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/debug_locks.h b/include/linux/debug_locks.h index 3bd46f766751..a975de1ff59f 100644 --- a/include/linux/debug_locks.h +++ b/include/linux/debug_locks.h @@ -51,7 +51,7 @@ struct task_struct; extern void debug_show_all_locks(void); extern void debug_show_held_locks(struct task_struct *task); extern void debug_check_no_locks_freed(const void *from, unsigned long len); -extern void debug_check_no_locks_held(struct task_struct *task); +extern void debug_check_no_locks_held(void); #else static inline void debug_show_all_locks(void) { @@ -67,7 +67,7 @@ debug_check_no_locks_freed(const void *from, unsigned long len) } static inline void -debug_check_no_locks_held(struct task_struct *task) +debug_check_no_locks_held(void) { } #endif diff --git a/include/linux/freezer.h b/include/linux/freezer.h index e70df40d84f6..043a5cf8b5ba 100644 --- a/include/linux/freezer.h +++ b/include/linux/freezer.h @@ -3,6 +3,7 @@ #ifndef FREEZER_H_INCLUDED #define FREEZER_H_INCLUDED +#include #include #include #include @@ -48,6 +49,8 @@ extern void thaw_kernel_threads(void); static inline bool try_to_freeze(void) { + if (!(current->flags & PF_NOFREEZE)) + debug_check_no_locks_held(); might_sleep(); if (likely(!freezing(current))) return false; -- cgit v1.2.3 From fe6e24ec90b753392c3f9ec1fbca196c4e88e511 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 27 Feb 2013 17:03:50 -0800 Subject: idr: deprecate idr_remove_all() There was only one legitimate use of idr_remove_all() and a lot more of incorrect uses (or lack of it). Now that idr_destroy() implies idr_remove_all() and all the in-kernel users updated not to use it, there's no reason to keep it around. Mark it deprecated so that we can later unexport it. idr_remove_all() is made an inline function calling __idr_remove_all() to avoid triggering deprecated warning on EXPORT_SYMBOL(). Signed-off-by: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/idr.h | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/idr.h b/include/linux/idr.h index e5eb125effe6..4cf042da3892 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -110,10 +110,22 @@ int idr_for_each(struct idr *idp, void *idr_get_next(struct idr *idp, int *nextid); void *idr_replace(struct idr *idp, void *ptr, int id); void idr_remove(struct idr *idp, int id); -void idr_remove_all(struct idr *idp); void idr_destroy(struct idr *idp); void idr_init(struct idr *idp); +void __idr_remove_all(struct idr *idp); /* don't use */ + +/** + * idr_remove_all - remove all ids from the given idr tree + * @idp: idr handle + * + * If you're trying to destroy @idp, calling idr_destroy() is enough. + * This is going away. Don't use. + */ +static inline void __deprecated idr_remove_all(struct idr *idp) +{ + __idr_remove_all(idp); +} /* * IDA - IDR based id allocator, use when translation from id to -- cgit v1.2.3 From 4106ecaf59b79efff3f9b466baf9e8c67e19ac5a Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 27 Feb 2013 17:03:51 -0800 Subject: idr: cosmetic updates to struct / initializer definitions * Tab align fields like a normal person. * Drop the unnecessary 0 inits from IDR_INIT(). This patch is purely cosmetic. Signed-off-by: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/idr.h | 28 ++++++++++++---------------- 1 file changed, 12 insertions(+), 16 deletions(-) (limited to 'include/linux') diff --git a/include/linux/idr.h b/include/linux/idr.h index 4cf042da3892..8f4980db3524 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -49,28 +49,24 @@ #define MAX_IDR_FREE (MAX_IDR_LEVEL * 2) struct idr_layer { - unsigned long bitmap; /* A zero bit means "space here" */ + unsigned long bitmap; /* A zero bit means "space here" */ struct idr_layer __rcu *ary[1< Date: Wed, 27 Feb 2013 17:03:52 -0800 Subject: idr: relocate idr_for_each_entry() and reorganize id[r|a]_get_new() * Move idr_for_each_entry() definition next to other idr related definitions. * Make id[r|a]_get_new() inline wrappers of id[r|a]_get_new_above(). This changes the implementation of idr_get_new() but the new implementation is trivial. This patch doesn't introduce any functional change. Signed-off-by: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/idr.h | 47 +++++++++++++++++++++++++++++++++++------------ 1 file changed, 35 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/idr.h b/include/linux/idr.h index 8f4980db3524..ff44bc83f3cb 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -99,7 +99,6 @@ struct idr { void *idr_find(struct idr *idp, int id); int idr_pre_get(struct idr *idp, gfp_t gfp_mask); -int idr_get_new(struct idr *idp, void *ptr, int *id); int idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id); int idr_for_each(struct idr *idp, int (*fn)(int id, void *p, void *data), void *data); @@ -109,6 +108,30 @@ void idr_remove(struct idr *idp, int id); void idr_destroy(struct idr *idp); void idr_init(struct idr *idp); +/** + * idr_get_new - allocate new idr entry + * @idp: idr handle + * @ptr: pointer you want associated with the id + * @id: pointer to the allocated handle + * + * Simple wrapper around idr_get_new_above() w/ @starting_id of zero. + */ +static inline int idr_get_new(struct idr *idp, void *ptr, int *id) +{ + return idr_get_new_above(idp, ptr, 0, id); +} + +/** + * idr_for_each_entry - iterate over an idr's elements of a given type + * @idp: idr handle + * @entry: the type * to use as cursor + * @id: id entry's key + */ +#define idr_for_each_entry(idp, entry, id) \ + for (id = 0, entry = (typeof(entry))idr_get_next((idp), &(id)); \ + entry != NULL; \ + ++id, entry = (typeof(entry))idr_get_next((idp), &(id))) + void __idr_remove_all(struct idr *idp); /* don't use */ /** @@ -149,7 +172,6 @@ struct ida { int ida_pre_get(struct ida *ida, gfp_t gfp_mask); int ida_get_new_above(struct ida *ida, int starting_id, int *p_id); -int ida_get_new(struct ida *ida, int *p_id); void ida_remove(struct ida *ida, int id); void ida_destroy(struct ida *ida); void ida_init(struct ida *ida); @@ -158,17 +180,18 @@ int ida_simple_get(struct ida *ida, unsigned int start, unsigned int end, gfp_t gfp_mask); void ida_simple_remove(struct ida *ida, unsigned int id); -void __init idr_init_cache(void); - /** - * idr_for_each_entry - iterate over an idr's elements of a given type - * @idp: idr handle - * @entry: the type * to use as cursor - * @id: id entry's key + * ida_get_new - allocate new ID + * @ida: idr handle + * @p_id: pointer to the allocated handle + * + * Simple wrapper around ida_get_new_above() w/ @starting_id of zero. */ -#define idr_for_each_entry(idp, entry, id) \ - for (id = 0, entry = (typeof(entry))idr_get_next((idp), &(id)); \ - entry != NULL; \ - ++id, entry = (typeof(entry))idr_get_next((idp), &(id))) +static inline int ida_get_new(struct ida *ida, int *p_id) +{ + return ida_get_new_above(ida, 0, p_id); +} + +void __init idr_init_cache(void); #endif /* __IDR_H__ */ -- cgit v1.2.3 From 12d1b4393e0d8df36b2646a5e512f0513fb532d2 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 27 Feb 2013 17:03:53 -0800 Subject: idr: remove _idr_rc_to_errno() hack idr uses -1, IDR_NEED_TO_GROW and IDR_NOMORE_SPACE to communicate exception conditions internally. The return value is later translated to errno values using _idr_rc_to_errno(). This is confusing. Drop the custom ones and consistently use -EAGAIN for "tree needs to grow", -ENOMEM for "need more memory" and -ENOSPC for "ran out of ID space". Due to the weird memory preloading mechanism, [ra]_get_new*() return -EAGAIN on memory shortage, so we need to substitute -ENOMEM w/ -EAGAIN on those interface functions. They'll eventually be cleaned up and the translations will go away. This patch doesn't introduce any functional changes. Signed-off-by: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/idr.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/idr.h b/include/linux/idr.h index ff44bc83f3cb..837f152b1383 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -70,12 +70,6 @@ struct idr { } #define DEFINE_IDR(name) struct idr name = IDR_INIT(name) -/* Actions to be taken after a call to _idr_sub_alloc */ -#define IDR_NEED_TO_GROW -2 -#define IDR_NOMORE_SPACE -3 - -#define _idr_rc_to_errno(rc) ((rc) == -1 ? -EAGAIN : -ENOSPC) - /** * DOC: idr sync * idr synchronization (stolen from radix-tree.h) -- cgit v1.2.3 From d5c7409f79e14db49d00785692334657592c07ff Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 27 Feb 2013 17:03:55 -0800 Subject: idr: implement idr_preload[_end]() and idr_alloc() The current idr interface is very cumbersome. * For all allocations, two function calls - idr_pre_get() and idr_get_new*() - should be made. * idr_pre_get() doesn't guarantee that the following idr_get_new*() will not fail from memory shortage. If idr_get_new*() returns -EAGAIN, the caller is expected to retry pre_get and allocation. * idr_get_new*() can't enforce upper limit. Upper limit can only be enforced by allocating and then freeing if above limit. * idr_layer buffer is unnecessarily per-idr. Each idr ends up keeping around MAX_IDR_FREE idr_layers. The memory consumed per idr is under two pages but it makes it difficult to make idr_layer larger. This patch implements the following new set of allocation functions. * idr_preload[_end]() - Similar to radix preload but doesn't fail. The first idr_alloc() inside preload section can be treated as if it were called with @gfp_mask used for idr_preload(). * idr_alloc() - Allocate an ID w/ lower and upper limits. Takes @gfp_flags and can be used w/o preloading. When used inside preloaded section, the allocation mask of preloading can be assumed. If idr_alloc() can be called from a context which allows sufficiently relaxed @gfp_mask, it can be used by itself. If, for example, idr_alloc() is called inside spinlock protected region, preloading can be used like the following. idr_preload(GFP_KERNEL); spin_lock(lock); id = idr_alloc(idr, ptr, start, end, GFP_NOWAIT); spin_unlock(lock); idr_preload_end(); if (id < 0) error; which is much simpler and less error-prone than idr_pre_get and idr_get_new*() loop. The new interface uses per-pcu idr_layer buffer and thus the number of idr's in the system doesn't affect the amount of memory used for preloading. idr_layer_alloc() is introduced to handle idr_layer allocations for both old and new ID allocation paths. This is a bit hairy now but the new interface is expected to replace the old and the internal implementation eventually will become simpler. Signed-off-by: Tejun Heo Cc: Rusty Russell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/idr.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'include/linux') diff --git a/include/linux/idr.h b/include/linux/idr.h index 837f152b1383..6dcf133f208a 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -94,14 +94,28 @@ struct idr { void *idr_find(struct idr *idp, int id); int idr_pre_get(struct idr *idp, gfp_t gfp_mask); int idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id); +void idr_preload(gfp_t gfp_mask); +int idr_alloc(struct idr *idp, void *ptr, int start, int end, gfp_t gfp_mask); int idr_for_each(struct idr *idp, int (*fn)(int id, void *p, void *data), void *data); void *idr_get_next(struct idr *idp, int *nextid); void *idr_replace(struct idr *idp, void *ptr, int id); void idr_remove(struct idr *idp, int id); +void idr_free(struct idr *idp, int id); void idr_destroy(struct idr *idp); void idr_init(struct idr *idp); +/** + * idr_preload_end - end preload section started with idr_preload() + * + * Each idr_preload() should be matched with an invocation of this + * function. See idr_preload() for details. + */ +static inline void idr_preload_end(void) +{ + preempt_enable(); +} + /** * idr_get_new - allocate new idr entry * @idp: idr handle -- cgit v1.2.3 From e8c8d1bc063bc88cfa1356266027b5075d3a82d7 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 27 Feb 2013 17:05:04 -0800 Subject: idr: remove MAX_IDR_MASK and move left MAX_IDR_* into idr.c MAX_IDR_MASK is another weirdness in the idr interface. As idr covers whole positive integer range, it's defined as 0x7fffffff or INT_MAX. Its usage in idr_find(), idr_replace() and idr_remove() is bizarre. They basically mask off the sign bit and operate on the rest, so if the caller, by accident, passes in a negative number, the sign bit will be masked off and the remaining part will be used as if that was the input, which is worse than crashing. The constant is visible in idr.h and there are several users in the kernel. * drivers/i2c/i2c-core.c:i2c_add_numbered_adapter() Basically used to test if adap->nr is a negative number which isn't -1 and returns -EINVAL if so. idr_alloc() already has negative @start checking (w/ WARN_ON_ONCE), so this can go away. * drivers/infiniband/core/cm.c:cm_alloc_id() drivers/infiniband/hw/mlx4/cm.c:id_map_alloc() Used to wrap cyclic @start. Can be replaced with max(next, 0). Note that this type of cyclic allocation using idr is buggy. These are prone to spurious -ENOSPC failure after the first wraparound. * fs/super.c:get_anon_bdev() The ID allocated from ida is masked off before being tested whether it's inside valid range. ida allocated ID can never be a negative number and the masking is unnecessary. Update idr_*() functions to fail with -EINVAL when negative @id is specified and update other MAX_IDR_MASK users as described above. This leaves MAX_IDR_MASK without any user, remove it and relocate other MAX_IDR_* constants to lib/idr.c. Signed-off-by: Tejun Heo Cc: Jean Delvare Cc: Roland Dreier Cc: Sean Hefty Cc: Hal Rosenstock Cc: "Marciniszyn, Mike" Cc: Jack Morgenstein Cc: Or Gerlitz Cc: Al Viro Acked-by: Wolfram Sang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/idr.h | 10 ---------- 1 file changed, 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/idr.h b/include/linux/idr.h index 6dcf133f208a..99b0ce533f0e 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -38,16 +38,6 @@ #define IDR_SIZE (1 << IDR_BITS) #define IDR_MASK ((1 << IDR_BITS)-1) -#define MAX_IDR_SHIFT (sizeof(int)*8 - 1) -#define MAX_IDR_BIT (1U << MAX_IDR_SHIFT) -#define MAX_IDR_MASK (MAX_IDR_BIT - 1) - -/* Leave the possibility of an incomplete final layer */ -#define MAX_IDR_LEVEL ((MAX_IDR_SHIFT + IDR_BITS - 1) / IDR_BITS) - -/* Number of id_layer structs to leave in free list */ -#define MAX_IDR_FREE (MAX_IDR_LEVEL * 2) - struct idr_layer { unsigned long bitmap; /* A zero bit means "space here" */ struct idr_layer __rcu *ary[1< Date: Wed, 27 Feb 2013 17:05:05 -0800 Subject: idr: remove length restriction from idr_layer->bitmap Currently, idr->bitmap is declared as an unsigned long which restricts the number of bits an idr_layer can contain. All bitops can handle arbitrary positive integer bit number and there's no reason for this restriction. Declare idr_layer->bitmap using DECLARE_BITMAP() instead of a single unsigned long. * idr_layer->bitmap is now an array. '&' dropped from params to bitops. * Replaced "== IDR_FULL" tests with bitmap_full() and removed IDR_FULL. * Replaced find_next_bit() on ~bitmap with find_next_zero_bit(). * Replaced "bitmap = 0" with bitmap_clear(). This patch doesn't (or at least shouldn't) introduce any behavior changes. [akpm@linux-foundation.org: checkpatch fixes] Signed-off-by: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/idr.h | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/idr.h b/include/linux/idr.h index 99b0ce533f0e..63aa542da49b 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -19,18 +19,8 @@ #if BITS_PER_LONG == 32 # define IDR_BITS 5 -# define IDR_FULL 0xfffffffful -/* We can only use two of the bits in the top level because there is - only one possible bit in the top level (5 bits * 7 levels = 35 - bits, but you only use 31 bits in the id). */ -# define TOP_LEVEL_FULL (IDR_FULL >> 30) #elif BITS_PER_LONG == 64 # define IDR_BITS 6 -# define IDR_FULL 0xfffffffffffffffful -/* We can only use two of the bits in the top level because there is - only one possible bit in the top level (6 bits * 6 levels = 36 - bits, but you only use 31 bits in the id). */ -# define TOP_LEVEL_FULL (IDR_FULL >> 62) #else # error "BITS_PER_LONG is not 32 or 64" #endif @@ -39,7 +29,7 @@ #define IDR_MASK ((1 << IDR_BITS)-1) struct idr_layer { - unsigned long bitmap; /* A zero bit means "space here" */ + DECLARE_BITMAP(bitmap, IDR_SIZE); /* A zero bit means "space here" */ struct idr_layer __rcu *ary[1< Date: Wed, 27 Feb 2013 17:05:06 -0800 Subject: idr: make idr_layer larger With recent preloading changes, idr no longer keeps full layer cache per each idr instance (used to be ~6.5k per idr on 64bit) and the previous patch removed restriction on the bitmap size. Both now allow us to have larger layers. Increase IDR_BITS to 8 regardless of BITS_PER_LONG. Each layer is slightly larger than 2k on 64bit and 1k on 32bit and carries 256 entries. The size isn't too large, especially compared to what we used to waste on per-idr caches, and 256 entries should be able to serve most use cases with single layer. The max tree depth is 4 which is much better than the previous 6 on 64bit and 7 on 32bit. Signed-off-by: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/idr.h | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/include/linux/idr.h b/include/linux/idr.h index 63aa542da49b..43b87b1c77a3 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -17,14 +17,13 @@ #include #include -#if BITS_PER_LONG == 32 -# define IDR_BITS 5 -#elif BITS_PER_LONG == 64 -# define IDR_BITS 6 -#else -# error "BITS_PER_LONG is not 32 or 64" -#endif - +/* + * We want shallower trees and thus more bits covered at each layer. 8 + * bits gives us large enough first layer for most use cases and maximum + * tree depth of 4. Each idr_layer is slightly larger than 2k on 64bit and + * 1k on 32bit. + */ +#define IDR_BITS 8 #define IDR_SIZE (1 << IDR_BITS) #define IDR_MASK ((1 << IDR_BITS)-1) -- cgit v1.2.3 From 54616283c2948812a44240858ced610e7cacbde1 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 27 Feb 2013 17:05:07 -0800 Subject: idr: add idr_layer->prefix Add a field which carries the prefix of ID the idr_layer covers. This will be used to implement lookup hint. This patch doesn't make use of the new field and doesn't introduce any behavior difference. Signed-off-by: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/idr.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/idr.h b/include/linux/idr.h index 43b87b1c77a3..7b1c5c6f9a06 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -28,6 +28,7 @@ #define IDR_MASK ((1 << IDR_BITS)-1) struct idr_layer { + int prefix; /* the ID prefix of this idr_layer */ DECLARE_BITMAP(bitmap, IDR_SIZE); /* A zero bit means "space here" */ struct idr_layer __rcu *ary[1< Date: Wed, 27 Feb 2013 17:05:08 -0800 Subject: idr: implement lookup hint While idr lookup isn't a particularly heavy operation, it still is too substantial to use in hot paths without worrying about the performance implications. With recent changes, each idr_layer covers 256 slots which should be enough to cover most use cases with single idr_layer making lookup hint very attractive. This patch adds idr->hint which points to the idr_layer which allocated an ID most recently and the fast path lookup becomes if (look up target's prefix matches that of the hinted layer) return hint->ary[ID's offset in the leaf layer]; which can be inlined. idr->hint is set to the leaf node on idr_fill_slot() and cleared from free_layer(). [andriy.shevchenko@linux.intel.com: always do slow path when hint is uninitialized] Signed-off-by: Tejun Heo Cc: Kirill A. Shutemov Cc: Sasha Levin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/idr.h | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/idr.h b/include/linux/idr.h index 7b1c5c6f9a06..a6f38b5c34e4 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -37,6 +37,7 @@ struct idr_layer { }; struct idr { + struct idr_layer __rcu *hint; /* the last layer allocated from */ struct idr_layer __rcu *top; struct idr_layer *id_free; int layers; /* only valid w/o concurrent changes */ @@ -71,7 +72,7 @@ struct idr { * This is what we export. */ -void *idr_find(struct idr *idp, int id); +void *idr_find_slowpath(struct idr *idp, int id); int idr_pre_get(struct idr *idp, gfp_t gfp_mask); int idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id); void idr_preload(gfp_t gfp_mask); @@ -96,6 +97,28 @@ static inline void idr_preload_end(void) preempt_enable(); } +/** + * idr_find - return pointer for given id + * @idp: idr handle + * @id: lookup key + * + * Return the pointer given the id it has been registered with. A %NULL + * return indicates that @id is not valid or you passed %NULL in + * idr_get_new(). + * + * This function can be called under rcu_read_lock(), given that the leaf + * pointers lifetimes are correctly managed. + */ +static inline void *idr_find(struct idr *idr, int id) +{ + struct idr_layer *hint = rcu_dereference_raw(idr->hint); + + if (hint && (id & ~IDR_MASK) == hint->prefix) + return rcu_dereference_raw(hint->ary[id & IDR_MASK]); + + return idr_find_slowpath(idr, id); +} + /** * idr_get_new - allocate new idr entry * @idp: idr handle -- cgit v1.2.3 From 59fb1b9f5d9910c2eb97107dd0eb7e3bce8f0dde Mon Sep 17 00:00:00 2001 From: "Robert P. J. Day" Date: Wed, 27 Feb 2013 17:05:11 -0800 Subject: ipmi: remove superfluous kernel/userspace explanation Given the obvious distinction between kernel and userspace supported by uapi/, it seems unnecessary to comment on that. Signed-off-by: Robert P. J. Day Signed-off-by: Corey Minyard Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/ipmi.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ipmi.h b/include/linux/ipmi.h index 1487e7906bbd..1f9f56e28851 100644 --- a/include/linux/ipmi.h +++ b/include/linux/ipmi.h @@ -35,10 +35,6 @@ #include - -/* - * The in-kernel interface. - */ #include #include -- cgit v1.2.3 From 1d730c49a91dc5b7660269b98ad76e5a9b85740f Mon Sep 17 00:00:00 2001 From: Martin Sustrik Date: Wed, 27 Feb 2013 17:05:42 -0800 Subject: include/linux/eventfd.h: fix incorrect filename is a comment Comment in eventfd.h referred to 'include/asm-generic/fcntl.h' while the correct path is 'include/uapi/asm-generic/fcntl.h'. Signed-off-by: Martin Sustrik Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/eventfd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/eventfd.h b/include/linux/eventfd.h index 3c3ef19a625a..cf5d2af61b81 100644 --- a/include/linux/eventfd.h +++ b/include/linux/eventfd.h @@ -13,7 +13,7 @@ #include /* - * CAREFUL: Check include/asm-generic/fcntl.h when defining + * CAREFUL: Check include/uapi/asm-generic/fcntl.h when defining * new flags, since they might collide with O_* ones. We want * to re-use O_* flags that couldn't possibly have a meaning * from eventfd, in order to leave a free define-space for -- cgit v1.2.3 From b67bfe0d42cac56c512dd5da4b1b347a23f4b70a Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Wed, 27 Feb 2013 17:06:00 -0800 Subject: hlist: drop the node parameter from iterators I'm not sure why, but the hlist for each entry iterators were conceived list_for_each_entry(pos, head, member) The hlist ones were greedy and wanted an extra parameter: hlist_for_each_entry(tpos, pos, head, member) Why did they need an extra pos parameter? I'm not quite sure. Not only they don't really need it, it also prevents the iterator from looking exactly like the list iterator, which is unfortunate. Besides the semantic patch, there was some manual work required: - Fix up the actual hlist iterators in linux/list.h - Fix up the declaration of other iterators based on the hlist ones. - A very small amount of places were using the 'node' parameter, this was modified to use 'obj->member' instead. - Coccinelle didn't handle the hlist_for_each_entry_safe iterator properly, so those had to be fixed up manually. The semantic patch which is mostly the work of Peter Senna Tschudin is here: @@ iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host; type T; expression a,c,d,e; identifier b; statement S; @@ -T b; <+... when != b ( hlist_for_each_entry(a, - b, c, d) S | hlist_for_each_entry_continue(a, - b, c) S | hlist_for_each_entry_from(a, - b, c) S | hlist_for_each_entry_rcu(a, - b, c, d) S | hlist_for_each_entry_rcu_bh(a, - b, c, d) S | hlist_for_each_entry_continue_rcu_bh(a, - b, c) S | for_each_busy_worker(a, c, - b, d) S | ax25_uid_for_each(a, - b, c) S | ax25_for_each(a, - b, c) S | inet_bind_bucket_for_each(a, - b, c) S | sctp_for_each_hentry(a, - b, c) S | sk_for_each(a, - b, c) S | sk_for_each_rcu(a, - b, c) S | sk_for_each_from -(a, b) +(a) S + sk_for_each_from(a) S | sk_for_each_safe(a, - b, c, d) S | sk_for_each_bound(a, - b, c) S | hlist_for_each_entry_safe(a, - b, c, d, e) S | hlist_for_each_entry_continue_rcu(a, - b, c) S | nr_neigh_for_each(a, - b, c) S | nr_neigh_for_each_safe(a, - b, c, d) S | nr_node_for_each(a, - b, c) S | nr_node_for_each_safe(a, - b, c, d) S | - for_each_gfn_sp(a, c, d, b) S + for_each_gfn_sp(a, c, d) S | - for_each_gfn_indirect_valid_sp(a, c, d, b) S + for_each_gfn_indirect_valid_sp(a, c, d) S | for_each_host(a, - b, c) S | for_each_host_safe(a, - b, c, d) S | for_each_mesh_entry(a, - b, c, d) S ) ...+> [akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c] [akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c] [akpm@linux-foundation.org: checkpatch fixes] [akpm@linux-foundation.org: fix warnings] [akpm@linux-foudnation.org: redo intrusive kvm changes] Tested-by: Peter Senna Tschudin Acked-by: Paul E. McKenney Signed-off-by: Sasha Levin Cc: Wu Fengguang Cc: Marcelo Tosatti Cc: Gleb Natapov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/hashtable.h | 40 ++++++++++++++++----------------- include/linux/if_team.h | 6 ++--- include/linux/list.h | 49 +++++++++++++++++++---------------------- include/linux/pid.h | 3 +-- include/linux/rculist.h | 56 +++++++++++++++++++++++------------------------ 5 files changed, 72 insertions(+), 82 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hashtable.h b/include/linux/hashtable.h index 227c62424f3c..a9df51f5d54c 100644 --- a/include/linux/hashtable.h +++ b/include/linux/hashtable.h @@ -115,51 +115,50 @@ static inline void hash_del_rcu(struct hlist_node *node) * hash_for_each - iterate over a hashtable * @name: hashtable to iterate * @bkt: integer to use as bucket loop cursor - * @node: the &struct list_head to use as a loop cursor for each entry * @obj: the type * to use as a loop cursor for each entry * @member: the name of the hlist_node within the struct */ -#define hash_for_each(name, bkt, node, obj, member) \ - for ((bkt) = 0, node = NULL; node == NULL && (bkt) < HASH_SIZE(name); (bkt)++)\ - hlist_for_each_entry(obj, node, &name[bkt], member) +#define hash_for_each(name, bkt, obj, member) \ + for ((bkt) = 0, obj = NULL; obj == NULL && (bkt) < HASH_SIZE(name);\ + (bkt)++)\ + hlist_for_each_entry(obj, &name[bkt], member) /** * hash_for_each_rcu - iterate over a rcu enabled hashtable * @name: hashtable to iterate * @bkt: integer to use as bucket loop cursor - * @node: the &struct list_head to use as a loop cursor for each entry * @obj: the type * to use as a loop cursor for each entry * @member: the name of the hlist_node within the struct */ -#define hash_for_each_rcu(name, bkt, node, obj, member) \ - for ((bkt) = 0, node = NULL; node == NULL && (bkt) < HASH_SIZE(name); (bkt)++)\ - hlist_for_each_entry_rcu(obj, node, &name[bkt], member) +#define hash_for_each_rcu(name, bkt, obj, member) \ + for ((bkt) = 0, obj = NULL; obj == NULL && (bkt) < HASH_SIZE(name);\ + (bkt)++)\ + hlist_for_each_entry_rcu(obj, &name[bkt], member) /** * hash_for_each_safe - iterate over a hashtable safe against removal of * hash entry * @name: hashtable to iterate * @bkt: integer to use as bucket loop cursor - * @node: the &struct list_head to use as a loop cursor for each entry * @tmp: a &struct used for temporary storage * @obj: the type * to use as a loop cursor for each entry * @member: the name of the hlist_node within the struct */ -#define hash_for_each_safe(name, bkt, node, tmp, obj, member) \ - for ((bkt) = 0, node = NULL; node == NULL && (bkt) < HASH_SIZE(name); (bkt)++)\ - hlist_for_each_entry_safe(obj, node, tmp, &name[bkt], member) +#define hash_for_each_safe(name, bkt, tmp, obj, member) \ + for ((bkt) = 0, obj = NULL; obj == NULL && (bkt) < HASH_SIZE(name);\ + (bkt)++)\ + hlist_for_each_entry_safe(obj, tmp, &name[bkt], member) /** * hash_for_each_possible - iterate over all possible objects hashing to the * same bucket * @name: hashtable to iterate * @obj: the type * to use as a loop cursor for each entry - * @node: the &struct list_head to use as a loop cursor for each entry * @member: the name of the hlist_node within the struct * @key: the key of the objects to iterate over */ -#define hash_for_each_possible(name, obj, node, member, key) \ - hlist_for_each_entry(obj, node, &name[hash_min(key, HASH_BITS(name))], member) +#define hash_for_each_possible(name, obj, member, key) \ + hlist_for_each_entry(obj, &name[hash_min(key, HASH_BITS(name))], member) /** * hash_for_each_possible_rcu - iterate over all possible objects hashing to the @@ -167,25 +166,24 @@ static inline void hash_del_rcu(struct hlist_node *node) * in a rcu enabled hashtable * @name: hashtable to iterate * @obj: the type * to use as a loop cursor for each entry - * @node: the &struct list_head to use as a loop cursor for each entry * @member: the name of the hlist_node within the struct * @key: the key of the objects to iterate over */ -#define hash_for_each_possible_rcu(name, obj, node, member, key) \ - hlist_for_each_entry_rcu(obj, node, &name[hash_min(key, HASH_BITS(name))], member) +#define hash_for_each_possible_rcu(name, obj, member, key) \ + hlist_for_each_entry_rcu(obj, &name[hash_min(key, HASH_BITS(name))],\ + member) /** * hash_for_each_possible_safe - iterate over all possible objects hashing to the * same bucket safe against removals * @name: hashtable to iterate * @obj: the type * to use as a loop cursor for each entry - * @node: the &struct list_head to use as a loop cursor for each entry * @tmp: a &struct used for temporary storage * @member: the name of the hlist_node within the struct * @key: the key of the objects to iterate over */ -#define hash_for_each_possible_safe(name, obj, node, tmp, member, key) \ - hlist_for_each_entry_safe(obj, node, tmp, \ +#define hash_for_each_possible_safe(name, obj, tmp, member, key) \ + hlist_for_each_entry_safe(obj, tmp,\ &name[hash_min(key, HASH_BITS(name))], member) diff --git a/include/linux/if_team.h b/include/linux/if_team.h index 4648d8021244..cfd21e3d5506 100644 --- a/include/linux/if_team.h +++ b/include/linux/if_team.h @@ -216,11 +216,10 @@ static inline struct hlist_head *team_port_index_hash(struct team *team, static inline struct team_port *team_get_port_by_index(struct team *team, int port_index) { - struct hlist_node *p; struct team_port *port; struct hlist_head *head = team_port_index_hash(team, port_index); - hlist_for_each_entry(port, p, head, hlist) + hlist_for_each_entry(port, head, hlist) if (port->index == port_index) return port; return NULL; @@ -228,11 +227,10 @@ static inline struct team_port *team_get_port_by_index(struct team *team, static inline struct team_port *team_get_port_by_index_rcu(struct team *team, int port_index) { - struct hlist_node *p; struct team_port *port; struct hlist_head *head = team_port_index_hash(team, port_index); - hlist_for_each_entry_rcu(port, p, head, hlist) + hlist_for_each_entry_rcu(port, head, hlist) if (port->index == port_index) return port; return NULL; diff --git a/include/linux/list.h b/include/linux/list.h index cc6d2aa6b415..d991cc147c98 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -666,54 +666,49 @@ static inline void hlist_move_list(struct hlist_head *old, for (pos = (head)->first; pos && ({ n = pos->next; 1; }); \ pos = n) +#define hlist_entry_safe(ptr, type, member) \ + (ptr) ? hlist_entry(ptr, type, member) : NULL + /** * hlist_for_each_entry - iterate over list of given type - * @tpos: the type * to use as a loop cursor. - * @pos: the &struct hlist_node to use as a loop cursor. + * @pos: the type * to use as a loop cursor. * @head: the head for your list. * @member: the name of the hlist_node within the struct. */ -#define hlist_for_each_entry(tpos, pos, head, member) \ - for (pos = (head)->first; \ - pos && \ - ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \ - pos = pos->next) +#define hlist_for_each_entry(pos, head, member) \ + for (pos = hlist_entry_safe((head)->first, typeof(*(pos)), member);\ + pos; \ + pos = hlist_entry_safe((pos)->member.next, typeof(*(pos)), member)) /** * hlist_for_each_entry_continue - iterate over a hlist continuing after current point - * @tpos: the type * to use as a loop cursor. - * @pos: the &struct hlist_node to use as a loop cursor. + * @pos: the type * to use as a loop cursor. * @member: the name of the hlist_node within the struct. */ -#define hlist_for_each_entry_continue(tpos, pos, member) \ - for (pos = (pos)->next; \ - pos && \ - ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \ - pos = pos->next) +#define hlist_for_each_entry_continue(pos, member) \ + for (pos = hlist_entry_safe((pos)->member.next, typeof(*(pos)), member);\ + pos; \ + pos = hlist_entry_safe((pos)->member.next, typeof(*(pos)), member)) /** * hlist_for_each_entry_from - iterate over a hlist continuing from current point - * @tpos: the type * to use as a loop cursor. - * @pos: the &struct hlist_node to use as a loop cursor. + * @pos: the type * to use as a loop cursor. * @member: the name of the hlist_node within the struct. */ -#define hlist_for_each_entry_from(tpos, pos, member) \ - for (; pos && \ - ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \ - pos = pos->next) +#define hlist_for_each_entry_from(pos, member) \ + for (; pos; \ + pos = hlist_entry_safe((pos)->member.next, typeof(*(pos)), member)) /** * hlist_for_each_entry_safe - iterate over list of given type safe against removal of list entry - * @tpos: the type * to use as a loop cursor. - * @pos: the &struct hlist_node to use as a loop cursor. + * @pos: the type * to use as a loop cursor. * @n: another &struct hlist_node to use as temporary storage * @head: the head for your list. * @member: the name of the hlist_node within the struct. */ -#define hlist_for_each_entry_safe(tpos, pos, n, head, member) \ - for (pos = (head)->first; \ - pos && ({ n = pos->next; 1; }) && \ - ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \ - pos = n) +#define hlist_for_each_entry_safe(pos, n, head, member) \ + for (pos = hlist_entry_safe((head)->first, typeof(*pos), member);\ + pos && ({ n = pos->member.next; 1; }); \ + pos = hlist_entry_safe(n, typeof(*pos), member)) #endif diff --git a/include/linux/pid.h b/include/linux/pid.h index 2381c973d897..a089a3c447fc 100644 --- a/include/linux/pid.h +++ b/include/linux/pid.h @@ -176,9 +176,8 @@ pid_t pid_vnr(struct pid *pid); #define do_each_pid_task(pid, type, task) \ do { \ - struct hlist_node *pos___; \ if ((pid) != NULL) \ - hlist_for_each_entry_rcu((task), pos___, \ + hlist_for_each_entry_rcu((task), \ &(pid)->tasks[type], pids[type].node) { /* diff --git a/include/linux/rculist.h b/include/linux/rculist.h index c92dd28eaa6c..8089e35d47ac 100644 --- a/include/linux/rculist.h +++ b/include/linux/rculist.h @@ -445,8 +445,7 @@ static inline void hlist_add_after_rcu(struct hlist_node *prev, /** * hlist_for_each_entry_rcu - iterate over rcu list of given type - * @tpos: the type * to use as a loop cursor. - * @pos: the &struct hlist_node to use as a loop cursor. + * @pos: the type * to use as a loop cursor. * @head: the head for your list. * @member: the name of the hlist_node within the struct. * @@ -454,16 +453,16 @@ static inline void hlist_add_after_rcu(struct hlist_node *prev, * the _rcu list-mutation primitives such as hlist_add_head_rcu() * as long as the traversal is guarded by rcu_read_lock(). */ -#define hlist_for_each_entry_rcu(tpos, pos, head, member) \ - for (pos = rcu_dereference_raw(hlist_first_rcu(head)); \ - pos && \ - ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1; }); \ - pos = rcu_dereference_raw(hlist_next_rcu(pos))) +#define hlist_for_each_entry_rcu(pos, head, member) \ + for (pos = hlist_entry_safe (rcu_dereference_raw(hlist_first_rcu(head)),\ + typeof(*(pos)), member); \ + pos; \ + pos = hlist_entry_safe(rcu_dereference_raw(hlist_next_rcu(\ + &(pos)->member)), typeof(*(pos)), member)) /** * hlist_for_each_entry_rcu_bh - iterate over rcu list of given type - * @tpos: the type * to use as a loop cursor. - * @pos: the &struct hlist_node to use as a loop cursor. + * @pos: the type * to use as a loop cursor. * @head: the head for your list. * @member: the name of the hlist_node within the struct. * @@ -471,35 +470,36 @@ static inline void hlist_add_after_rcu(struct hlist_node *prev, * the _rcu list-mutation primitives such as hlist_add_head_rcu() * as long as the traversal is guarded by rcu_read_lock(). */ -#define hlist_for_each_entry_rcu_bh(tpos, pos, head, member) \ - for (pos = rcu_dereference_bh((head)->first); \ - pos && \ - ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1; }); \ - pos = rcu_dereference_bh(pos->next)) +#define hlist_for_each_entry_rcu_bh(pos, head, member) \ + for (pos = hlist_entry_safe(rcu_dereference_bh(hlist_first_rcu(head)),\ + typeof(*(pos)), member); \ + pos; \ + pos = hlist_entry_safe(rcu_dereference_bh(hlist_next_rcu(\ + &(pos)->member)), typeof(*(pos)), member)) /** * hlist_for_each_entry_continue_rcu - iterate over a hlist continuing after current point - * @tpos: the type * to use as a loop cursor. - * @pos: the &struct hlist_node to use as a loop cursor. + * @pos: the type * to use as a loop cursor. * @member: the name of the hlist_node within the struct. */ -#define hlist_for_each_entry_continue_rcu(tpos, pos, member) \ - for (pos = rcu_dereference((pos)->next); \ - pos && \ - ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1; }); \ - pos = rcu_dereference(pos->next)) +#define hlist_for_each_entry_continue_rcu(pos, member) \ + for (pos = hlist_entry_safe(rcu_dereference((pos)->member.next),\ + typeof(*(pos)), member); \ + pos; \ + pos = hlist_entry_safe(rcu_dereference((pos)->member.next),\ + typeof(*(pos)), member)) /** * hlist_for_each_entry_continue_rcu_bh - iterate over a hlist continuing after current point - * @tpos: the type * to use as a loop cursor. - * @pos: the &struct hlist_node to use as a loop cursor. + * @pos: the type * to use as a loop cursor. * @member: the name of the hlist_node within the struct. */ -#define hlist_for_each_entry_continue_rcu_bh(tpos, pos, member) \ - for (pos = rcu_dereference_bh((pos)->next); \ - pos && \ - ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1; }); \ - pos = rcu_dereference_bh(pos->next)) +#define hlist_for_each_entry_continue_rcu_bh(pos, member) \ + for (pos = hlist_entry_safe(rcu_dereference_bh((pos)->member.next),\ + typeof(*(pos)), member); \ + pos; \ + pos = hlist_entry_safe(rcu_dereference_bh((pos)->member.next),\ + typeof(*(pos)), member)) #endif /* __KERNEL__ */ -- cgit v1.2.3 From f9c6a655a94042f94c0adb30d07d93cfd8915e95 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 27 Feb 2013 21:36:03 +0000 Subject: dmaengine: dw_dmac: move to generic DMA binding The original device tree binding for this driver, from Viresh Kumar unfortunately conflicted with the generic DMA binding, and did not allow to completely seperate slave device configuration from the controller. This is an attempt to replace it with an implementation of the generic binding, but it is currently completely untested, because I do not have any hardware with this particular controller. The patch applies on top of the slave-dma tree, which contains both the base support for the generic DMA binding, as well as the earlier attempt from Viresh. Both of these are currently not merged upstream however. This version incorporates feedback from Viresh Kumar, Andy Shevchenko and Russell King. Signed-off-by: Arnd Bergmann Acked-by: Viresh Kumar Acked-by: Andy Shevchenko Cc: Vinod Koul Cc: devicetree-discuss@lists.ozlabs.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Vinod Koul --- include/linux/dw_dmac.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/dw_dmac.h b/include/linux/dw_dmac.h index 41766de66e33..481ab2345d6b 100644 --- a/include/linux/dw_dmac.h +++ b/include/linux/dw_dmac.h @@ -27,7 +27,6 @@ */ struct dw_dma_slave { struct device *dma_dev; - const char *bus_id; u32 cfg_hi; u32 cfg_lo; u8 src_master; @@ -60,9 +59,6 @@ struct dw_dma_platform_data { unsigned short block_size; unsigned char nr_masters; unsigned char data_width[4]; - - struct dw_dma_slave *sd; - unsigned int sd_count; }; /* bursts size */ @@ -114,6 +110,5 @@ void dw_dma_cyclic_stop(struct dma_chan *chan); dma_addr_t dw_dma_get_src_addr(struct dma_chan *chan); dma_addr_t dw_dma_get_dst_addr(struct dma_chan *chan); -bool dw_dma_generic_filter(struct dma_chan *chan, void *param); #endif /* DW_DMAC_H */ -- cgit v1.2.3 From edddbb1eda61753c886a3c5e159293a7b3a9e30a Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Thu, 28 Feb 2013 20:30:09 -0500 Subject: SUNRPC: add call to get configured timeout Returns the configured timeout for the xprt of the rpc client. Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- include/linux/sunrpc/clnt.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index 34206b84d8da..21d52d0dc15c 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -160,6 +160,7 @@ void rpc_setbufsize(struct rpc_clnt *, unsigned int, unsigned int); int rpc_protocol(struct rpc_clnt *); struct net * rpc_net_ns(struct rpc_clnt *); size_t rpc_max_payload(struct rpc_clnt *); +unsigned long rpc_get_timeout(struct rpc_clnt *clnt); void rpc_force_rebind(struct rpc_clnt *); size_t rpc_peeraddr(struct rpc_clnt *, struct sockaddr *, size_t); const char *rpc_peeraddr2str(struct rpc_clnt *, enum rpc_display_format_t); -- cgit v1.2.3 From 3000512137602b84d1ad5fd89d62984993a19bb6 Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Thu, 28 Feb 2013 20:30:10 -0500 Subject: NFSv4.1: LAYOUTGET EDELAY loops timeout to the MDS The client will currently try LAYOUTGETs forever if a server is returning NFS4ERR_LAYOUTTRYLATER or NFS4ERR_RECALLCONFLICT - even if the client no longer needs the layout (ie process killed, unmounted). This patch uses the DS timeout value (module parameter 'dataserver_timeo' via rpc layer) to set an upper limit of how long the client tries LATOUTGETs in this situation. Once the timeout is reached, IO is redirected to the MDS. This also changes how the client checks if a layout is on the clp list to avoid a double list_add. Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 29adb12c7ecf..2250cab6fc4b 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -233,6 +233,7 @@ struct nfs4_layoutget_args { struct inode *inode; struct nfs_open_context *ctx; nfs4_stateid stateid; + unsigned long timestamp; struct nfs4_layoutdriver_data layout; }; -- cgit v1.2.3 From 5838b032fd69ae47565ddc50062decf9055e1628 Mon Sep 17 00:00:00 2001 From: Nishanth Menon Date: Thu, 28 Feb 2013 18:12:47 -0600 Subject: regulator: core: update kernel documentation for regulator_desc commit df367931 (regulator: core: Provide regmap get/set bypass operations) introduced regulator_[gs]et_bypass_regmap However structure documentation for regulator_desc needs an update. ./scripts/kernel-doc include/linux/regulator/driver.h >/dev/null generates: Warning(include/linux/regulator/driver.h:233): No description found for parameter 'bypass_reg' Warning(include/linux/regulator/driver.h:233): No description found for parameter 'bypass_mask' Cc: Liam Girdwood Cc: Mark Brown Cc: linux-kernel@vger.kernel.org Signed-off-by: Nishanth Menon Signed-off-by: Mark Brown --- include/linux/regulator/driver.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 23070fd83872..7df93f52db08 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -199,6 +199,8 @@ enum regulator_type { * output when using regulator_set_voltage_sel_regmap * @enable_reg: Register for control when using regmap enable/disable ops * @enable_mask: Mask for control when using regmap enable/disable ops + * @bypass_reg: Register for control when using regmap set_bypass + * @bypass_mask: Mask for control when using regmap set_bypass * * @enable_time: Time taken for initial enable of regulator (in uS). */ -- cgit v1.2.3 From 1a71fb84fda651105e1e194c2d3a3a13a38210a9 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Tue, 27 Sep 2011 22:21:37 +0200 Subject: rtc: stmp3xxx: add wdt-accessor function This RTC also includes a watchdog timer. Provide an accessor function for setting the watchdog timeout value which will be picked up by a watchdog driver. Also register the platform_device for the watchdog here to get the boot-time dependencies right. Signed-off-by: Wolfram Sang Acked-by: Andrew Morton Signed-off-by: Wim Van Sebroeck --- include/linux/stmp3xxx_rtc_wdt.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 include/linux/stmp3xxx_rtc_wdt.h (limited to 'include/linux') diff --git a/include/linux/stmp3xxx_rtc_wdt.h b/include/linux/stmp3xxx_rtc_wdt.h new file mode 100644 index 000000000000..1dd12c96231b --- /dev/null +++ b/include/linux/stmp3xxx_rtc_wdt.h @@ -0,0 +1,15 @@ +/* + * stmp3xxx_rtc_wdt.h + * + * Copyright (C) 2011 Wolfram Sang, Pengutronix e.K. + * + * This file is released under the GPLv2. + */ +#ifndef __LINUX_STMP3XXX_RTC_WDT_H +#define __LINUX_STMP3XXX_RTC_WDT_H + +struct stmp3xxx_wdt_pdata { + void (*wdt_set_timeout)(struct device *dev, u32 timeout); +}; + +#endif /* __LINUX_STMP3XXX_RTC_WDT_H */ -- cgit v1.2.3 From f82dedf812ecdf0c19c6c240e85a4a487ab62016 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Thu, 24 Jan 2013 18:13:34 +0100 Subject: watchdog: bcm47xx_wdt.c: use platform device Instead of accessing the function to set the watchdog timer directly, register a platform driver the platform could register to use this watchdog driver. Signed-off-by: Hauke Mehrtens Signed-off-by: Wim Van Sebroeck --- include/linux/bcm47xx_wdt.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bcm47xx_wdt.h b/include/linux/bcm47xx_wdt.h index e5dfc256485b..b708786d4cbf 100644 --- a/include/linux/bcm47xx_wdt.h +++ b/include/linux/bcm47xx_wdt.h @@ -1,7 +1,10 @@ #ifndef LINUX_BCM47XX_WDT_H_ #define LINUX_BCM47XX_WDT_H_ +#include +#include #include +#include struct bcm47xx_wdt { @@ -10,6 +13,12 @@ struct bcm47xx_wdt { u32 max_timer_ms; void *driver_data; + + struct watchdog_device wdd; + struct notifier_block notifier; + + struct timer_list soft_timer; + atomic_t soft_ticks; }; static inline void *bcm47xx_wdt_get_drvdata(struct bcm47xx_wdt *wdt) -- cgit v1.2.3 From 3048253ed957fc6cdc34599178408559aa1e0062 Mon Sep 17 00:00:00 2001 From: Fabio Porcedda Date: Tue, 8 Jan 2013 11:04:10 +0100 Subject: watchdog: core: dt: add support for the timeout-sec dt property Add support for watchdog drivers to initialize/set the timeout field of the watchdog_device structure. The timeout field is initialised either with the module timeout parameter value (if valid) or with the timeout-sec dt property (if valid). If both are invalid the initial value is unchanged. Signed-off-by: Fabio Porcedda Acked-by: Nicolas Ferre Signed-off-by: Wim Van Sebroeck --- include/linux/watchdog.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/watchdog.h b/include/linux/watchdog.h index 3a9df2f43be6..2a3038ee17a3 100644 --- a/include/linux/watchdog.h +++ b/include/linux/watchdog.h @@ -118,6 +118,13 @@ static inline void watchdog_set_nowayout(struct watchdog_device *wdd, bool noway set_bit(WDOG_NO_WAY_OUT, &wdd->status); } +/* Use the following function to check if a timeout value is invalid */ +static inline bool watchdog_timeout_invalid(struct watchdog_device *wdd, unsigned int t) +{ + return ((wdd->max_timeout != 0) && + (t < wdd->min_timeout || t > wdd->max_timeout)); +} + /* Use the following functions to manipulate watchdog driver specific data */ static inline void watchdog_set_drvdata(struct watchdog_device *wdd, void *data) { @@ -130,6 +137,8 @@ static inline void *watchdog_get_drvdata(struct watchdog_device *wdd) } /* drivers/watchdog/watchdog_core.c */ +extern int watchdog_init_timeout(struct watchdog_device *wdd, + unsigned int timeout_parm, struct device *dev); extern int watchdog_register_device(struct watchdog_device *); extern void watchdog_unregister_device(struct watchdog_device *); -- cgit v1.2.3 From 8eae508b7c6ff502a71d0293b69e97c5505d5840 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Fri, 1 Mar 2013 11:11:47 -0800 Subject: hsi: fix kernel-doc warnings Fix kernel-doc warnings in hsi files: Warning(include/linux/hsi/hsi.h:136): Excess struct/union/enum/typedef member 'e_handler' description in 'hsi_client' Warning(include/linux/hsi/hsi.h:136): Excess struct/union/enum/typedef member 'pclaimed' description in 'hsi_client' Warning(include/linux/hsi/hsi.h:136): Excess struct/union/enum/typedef member 'nb' description in 'hsi_client' Warning(drivers/hsi/hsi.c:434): No description found for parameter 'handler' Warning(drivers/hsi/hsi.c:434): Excess function parameter 'cb' description in 'hsi_register_port_event' Don't document "private:" fields with kernel-doc notation. If you want to leave them fully documented, that's OK, but then don't mark them as "private:". Signed-off-by: Randy Dunlap Cc: Carlos Chinea Cc: Linus Walleij Cc: Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org Cc: linux-omap@vger.kernel.org Acked-by: Nishanth Menon Signed-off-by: Linus Torvalds --- include/linux/hsi/hsi.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hsi/hsi.h b/include/linux/hsi/hsi.h index 56fae865e272..0dca785288cf 100644 --- a/include/linux/hsi/hsi.h +++ b/include/linux/hsi/hsi.h @@ -121,9 +121,9 @@ static inline int hsi_register_board_info(struct hsi_board_info const *info, * @device: Driver model representation of the device * @tx_cfg: HSI TX configuration * @rx_cfg: HSI RX configuration - * @e_handler: Callback for handling port events (RX Wake High/Low) - * @pclaimed: Keeps tracks if the clients claimed its associated HSI port - * @nb: Notifier block for port events + * e_handler: Callback for handling port events (RX Wake High/Low) + * pclaimed: Keeps tracks if the clients claimed its associated HSI port + * nb: Notifier block for port events */ struct hsi_client { struct device device; -- cgit v1.2.3 From fd7c092e711ebab55b2688d3859d95dfd0301f73 Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Fri, 1 Mar 2013 22:45:44 +0000 Subject: dm: fix truncated status strings Avoid returning a truncated table or status string instead of setting the DM_BUFFER_FULL_FLAG when the last target of a table fills the buffer. When processing a table or status request, the function retrieve_status calls ti->type->status. If ti->type->status returns non-zero, retrieve_status assumes that the buffer overflowed and sets DM_BUFFER_FULL_FLAG. However, targets don't return non-zero values from their status method on overflow. Most targets returns always zero. If a buffer overflow happens in a target that is not the last in the table, it gets noticed during the next iteration of the loop in retrieve_status; but if a buffer overflow happens in the last target, it goes unnoticed and erroneously truncated data is returned. In the current code, the targets behave in the following way: * dm-crypt returns -ENOMEM if there is not enough space to store the key, but it returns 0 on all other overflows. * dm-thin returns errors from the status method if a disk error happened. This is incorrect because retrieve_status doesn't check the error code, it assumes that all non-zero values mean buffer overflow. * all the other targets always return 0. This patch changes the ti->type->status function to return void (because most targets don't use the return code). Overflow is detected in retrieve_status: if the status method fills up the remaining space completely, it is assumed that buffer overflow happened. Cc: stable@vger.kernel.org Signed-off-by: Mikulas Patocka Signed-off-by: Alasdair G Kergon --- include/linux/device-mapper.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index bf6afa2fc432..a5cda3ea6b88 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -68,8 +68,8 @@ typedef void (*dm_postsuspend_fn) (struct dm_target *ti); typedef int (*dm_preresume_fn) (struct dm_target *ti); typedef void (*dm_resume_fn) (struct dm_target *ti); -typedef int (*dm_status_fn) (struct dm_target *ti, status_type_t status_type, - unsigned status_flags, char *result, unsigned maxlen); +typedef void (*dm_status_fn) (struct dm_target *ti, status_type_t status_type, + unsigned status_flags, char *result, unsigned maxlen); typedef int (*dm_message_fn) (struct dm_target *ti, unsigned argc, char **argv); -- cgit v1.2.3 From 55a62eef8d1b50ceff3b7bf46851103bdcc7e5b0 Mon Sep 17 00:00:00 2001 From: Alasdair G Kergon Date: Fri, 1 Mar 2013 22:45:47 +0000 Subject: dm: rename request variables to bios Use 'bio' in the name of variables and functions that deal with bios rather than 'request' to avoid confusion with the normal block layer use of 'request'. No functional changes. Signed-off-by: Alasdair G Kergon --- include/linux/device-mapper.h | 30 +++++++++++++++--------------- 1 file changed, 15 insertions(+), 15 deletions(-) (limited to 'include/linux') diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index a5cda3ea6b88..d5f984b07466 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -187,26 +187,26 @@ struct dm_target { uint32_t max_io_len; /* - * A number of zero-length barrier requests that will be submitted + * A number of zero-length barrier bios that will be submitted * to the target for the purpose of flushing cache. * - * The request number can be accessed with dm_bio_get_target_request_nr. - * It is a responsibility of the target driver to remap these requests + * The bio number can be accessed with dm_bio_get_target_bio_nr. + * It is a responsibility of the target driver to remap these bios * to the real underlying devices. */ - unsigned num_flush_requests; + unsigned num_flush_bios; /* - * The number of discard requests that will be submitted to the target. - * The request number can be accessed with dm_bio_get_target_request_nr. + * The number of discard bios that will be submitted to the target. + * The bio number can be accessed with dm_bio_get_target_bio_nr. */ - unsigned num_discard_requests; + unsigned num_discard_bios; /* - * The number of WRITE SAME requests that will be submitted to the target. - * The request number can be accessed with dm_bio_get_target_request_nr. + * The number of WRITE SAME bios that will be submitted to the target. + * The bio number can be accessed with dm_bio_get_target_bio_nr. */ - unsigned num_write_same_requests; + unsigned num_write_same_bios; /* * The minimum number of extra bytes allocated in each bio for the @@ -233,10 +233,10 @@ struct dm_target { bool discards_supported:1; /* - * Set if the target required discard request to be split + * Set if the target required discard bios to be split * on max_io_len boundary. */ - bool split_discard_requests:1; + bool split_discard_bios:1; /* * Set if this target does not return zeroes on discarded blocks. @@ -261,7 +261,7 @@ struct dm_target_io { struct dm_io *io; struct dm_target *ti; union map_info info; - unsigned target_request_nr; + unsigned target_bio_nr; struct bio clone; }; @@ -275,9 +275,9 @@ static inline struct bio *dm_bio_from_per_bio_data(void *data, size_t data_size) return (struct bio *)((char *)data + data_size + offsetof(struct dm_target_io, clone)); } -static inline unsigned dm_bio_get_target_request_nr(const struct bio *bio) +static inline unsigned dm_bio_get_target_bio_nr(const struct bio *bio) { - return container_of(bio, struct dm_target_io, clone)->target_request_nr; + return container_of(bio, struct dm_target_io, clone)->target_bio_nr; } int dm_register_target(struct target_type *t); -- cgit v1.2.3 From df5d2e9089c7d5b8c46f767e4278610ea3e815b9 Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Fri, 1 Mar 2013 22:45:49 +0000 Subject: dm kcopyd: introduce configurable throttling This patch allows the administrator to reduce the rate at which kcopyd issues I/O. Each module that uses kcopyd acquires a throttle parameter that can be set in /sys/module/*/parameters. We maintain a history of kcopyd usage by each module in the variables io_period and total_period in struct dm_kcopyd_throttle. The actual kcopyd activity is calculated as a percentage of time equal to "(100 * io_period / total_period)". This is compared with the user-defined throttle percentage threshold and if it is exceeded, we sleep. Signed-off-by: Mikulas Patocka Signed-off-by: Alasdair G Kergon --- include/linux/dm-kcopyd.h | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/dm-kcopyd.h b/include/linux/dm-kcopyd.h index 47d9d376e4e7..f486d636b82e 100644 --- a/include/linux/dm-kcopyd.h +++ b/include/linux/dm-kcopyd.h @@ -21,11 +21,34 @@ #define DM_KCOPYD_IGNORE_ERROR 1 +struct dm_kcopyd_throttle { + unsigned throttle; + unsigned num_io_jobs; + unsigned io_period; + unsigned total_period; + unsigned last_jiffies; +}; + +/* + * kcopyd clients that want to support throttling must pass an initialised + * dm_kcopyd_throttle struct into dm_kcopyd_client_create(). + * Two or more clients may share the same instance of this struct between + * them if they wish to be throttled as a group. + * + * This macro also creates a corresponding module parameter to configure + * the amount of throttling. + */ +#define DECLARE_DM_KCOPYD_THROTTLE_WITH_MODULE_PARM(name, description) \ +static struct dm_kcopyd_throttle dm_kcopyd_throttle = { 100, 0, 0, 0, 0 }; \ +module_param_named(name, dm_kcopyd_throttle.throttle, uint, 0644); \ +MODULE_PARM_DESC(name, description) + /* * To use kcopyd you must first create a dm_kcopyd_client object. + * throttle can be NULL if you don't want any throttling. */ struct dm_kcopyd_client; -struct dm_kcopyd_client *dm_kcopyd_client_create(void); +struct dm_kcopyd_client *dm_kcopyd_client_create(struct dm_kcopyd_throttle *throttle); void dm_kcopyd_client_destroy(struct dm_kcopyd_client *kc); /* -- cgit v1.2.3 From b0d8ed4d96a26ef3ac54a4aa8911c9413070662e Mon Sep 17 00:00:00 2001 From: Alasdair G Kergon Date: Fri, 1 Mar 2013 22:45:49 +0000 Subject: dm: add target num_write_bios fn Add a num_write_bios function to struct target. If an instance of a target sets this, it will be queried before the target's mapping function is called on a write bio, and the response controls the number of copies of the write bio that the target will receive. This provides a convenient way for a target to send the same data to more than one device. The new cache target uses this in writethrough mode, to send the data both to the cache and the backing device. Signed-off-by: Alasdair G Kergon --- include/linux/device-mapper.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/linux') diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index d5f984b07466..1e483fa7afb4 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -175,6 +175,14 @@ struct target_type { #define DM_TARGET_IMMUTABLE 0x00000004 #define dm_target_is_immutable(type) ((type)->features & DM_TARGET_IMMUTABLE) +/* + * Some targets need to be sent the same WRITE bio severals times so + * that they can send copies of it to different devices. This function + * examines any supplied bio and returns the number of copies of it the + * target requires. + */ +typedef unsigned (*dm_num_write_bios_fn) (struct dm_target *ti, struct bio *bio); + struct dm_target { struct dm_table *table; struct target_type *type; @@ -214,6 +222,13 @@ struct dm_target { */ unsigned per_bio_data_size; + /* + * If defined, this function is called to find out how many + * duplicate bios should be sent to the target when writing + * data. + */ + dm_num_write_bios_fn num_write_bios; + /* target specific data */ void *private; -- cgit v1.2.3 From dd37978c50bc8b354e5c4633f69387f16572fdac Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 1 Mar 2013 19:48:30 -0500 Subject: cache the value of file_inode() in struct file Note that this thing does *not* contribute to inode refcount; it's pinned down by dentry. Signed-off-by: Al Viro --- include/linux/fs.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 4e686a099465..74a907b8b950 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -769,6 +769,7 @@ struct file { } f_u; struct path f_path; #define f_dentry f_path.dentry + struct inode *f_inode; /* cached value */ const struct file_operations *f_op; /* @@ -2217,7 +2218,7 @@ static inline bool execute_ok(struct inode *inode) static inline struct inode *file_inode(struct file *f) { - return f->f_path.dentry->d_inode; + return f->f_inode; } /* -- cgit v1.2.3 From dcf787f39162ce32ca325b3e784aba2d2444619a Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 1 Mar 2013 23:51:07 -0500 Subject: constify path_get/path_put and fs_struct.c stuff Signed-off-by: Al Viro --- include/linux/fs_struct.h | 4 ++-- include/linux/path.h | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs_struct.h b/include/linux/fs_struct.h index d0ae3a84bcfb..729eded4b24f 100644 --- a/include/linux/fs_struct.h +++ b/include/linux/fs_struct.h @@ -17,8 +17,8 @@ struct fs_struct { extern struct kmem_cache *fs_cachep; extern void exit_fs(struct task_struct *); -extern void set_fs_root(struct fs_struct *, struct path *); -extern void set_fs_pwd(struct fs_struct *, struct path *); +extern void set_fs_root(struct fs_struct *, const struct path *); +extern void set_fs_pwd(struct fs_struct *, const struct path *); extern struct fs_struct *copy_fs_struct(struct fs_struct *); extern void free_fs_struct(struct fs_struct *); extern int unshare_fs_struct(void); diff --git a/include/linux/path.h b/include/linux/path.h index edc98dec6266..d1372186f431 100644 --- a/include/linux/path.h +++ b/include/linux/path.h @@ -9,8 +9,8 @@ struct path { struct dentry *dentry; }; -extern void path_get(struct path *); -extern void path_put(struct path *); +extern void path_get(const struct path *); +extern void path_put(const struct path *); static inline int path_equal(const struct path *path1, const struct path *path2) { -- cgit v1.2.3 From 5a4d729139b4e94f670288a3505657311f95c886 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Fri, 1 Mar 2013 15:57:00 +0000 Subject: iio: Fix build error seen if IIO_TRIGGER is defined but IIO_BUFFER is not MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If CONFIG_IIO_TRIGGER is defined but CONFIG_IIO_BUFFER is not, the following build error is seen. drivers/iio/common/st_sensors/st_sensors_trigger.c:21:5: error: redefinition of ‘st_sensors_allocate_trigger’ In file included from drivers/iio/common/st_sensors/st_sensors_trigger.c:18:0: include/linux/iio/common/st_sensors.h:239:19: note: previous definition of ‘st_sensors_allocate_trigger’ was here drivers/iio/common/st_sensors/st_sensors_trigger.c:65:6: error: redefinition of ‘st_sensors_deallocate_trigger’ In file included from drivers/iio/common/st_sensors/st_sensors_trigger.c:18:0: include/linux/iio/common/st_sensors.h:244:20: note: previous definition of ‘st_sensors_deallocate_trigger’ was here This occurs because st_sensors_deallocate_trigger is built if CONFIG_IIO_TRIGGER is defined, but the dummy function is compiled if CONFIG_IIO_BUFFER is defined. Signed-off-by: Guenter Roeck Acked-by: Denis Ciocca Signed-off-by: Jonathan Cameron --- include/linux/iio/common/st_sensors.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/iio/common/st_sensors.h b/include/linux/iio/common/st_sensors.h index 1f86a97ab2e2..8bd12be0b02f 100644 --- a/include/linux/iio/common/st_sensors.h +++ b/include/linux/iio/common/st_sensors.h @@ -227,14 +227,17 @@ struct st_sensor_data { }; #ifdef CONFIG_IIO_BUFFER +irqreturn_t st_sensors_trigger_handler(int irq, void *p); + +int st_sensors_get_buffer_element(struct iio_dev *indio_dev, u8 *buf); +#endif + +#ifdef CONFIG_IIO_TRIGGER int st_sensors_allocate_trigger(struct iio_dev *indio_dev, const struct iio_trigger_ops *trigger_ops); void st_sensors_deallocate_trigger(struct iio_dev *indio_dev); -irqreturn_t st_sensors_trigger_handler(int irq, void *p); - -int st_sensors_get_buffer_element(struct iio_dev *indio_dev, u8 *buf); #else static inline int st_sensors_allocate_trigger(struct iio_dev *indio_dev, const struct iio_trigger_ops *trigger_ops) -- cgit v1.2.3 From 20e6926dcbafa1b361f1c29d967688be14b6ca4b Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Fri, 1 Mar 2013 14:51:27 -0800 Subject: x86, ACPI, mm: Revert movablemem_map support Tim found: WARNING: at arch/x86/kernel/smpboot.c:324 topology_sane.isra.2+0x6f/0x80() Hardware name: S2600CP sched: CPU #1's llc-sibling CPU #0 is not on the same node! [node: 1 != 0]. Ignoring dependency. smpboot: Booting Node 1, Processors #1 Modules linked in: Pid: 0, comm: swapper/1 Not tainted 3.9.0-0-generic #1 Call Trace: set_cpu_sibling_map+0x279/0x449 start_secondary+0x11d/0x1e5 Don Morris reproduced on a HP z620 workstation, and bisected it to commit e8d195525809 ("acpi, memory-hotplug: parse SRAT before memblock is ready") It turns out movable_map has some problems, and it breaks several things 1. numa_init is called several times, NOT just for srat. so those nodes_clear(numa_nodes_parsed) memset(&numa_meminfo, 0, sizeof(numa_meminfo)) can not be just removed. Need to consider sequence is: numaq, srat, amd, dummy. and make fall back path working. 2. simply split acpi_numa_init to early_parse_srat. a. that early_parse_srat is NOT called for ia64, so you break ia64. b. for (i = 0; i < MAX_LOCAL_APIC; i++) set_apicid_to_node(i, NUMA_NO_NODE) still left in numa_init. So it will just clear result from early_parse_srat. it should be moved before that.... c. it breaks ACPI_TABLE_OVERIDE...as the acpi table scan is moved early before override from INITRD is settled. 3. that patch TITLE is total misleading, there is NO x86 in the title, but it changes critical x86 code. It caused x86 guys did not pay attention to find the problem early. Those patches really should be routed via tip/x86/mm. 4. after that commit, following range can not use movable ram: a. real_mode code.... well..funny, legacy Node0 [0,1M) could be hot-removed? b. initrd... it will be freed after booting, so it could be on movable... c. crashkernel for kdump...: looks like we can not put kdump kernel above 4G anymore. d. init_mem_mapping: can not put page table high anymore. e. initmem_init: vmemmap can not be high local node anymore. That is not good. If node is hotplugable, the mem related range like page table and vmemmap could be on the that node without problem and should be on that node. We have workaround patch that could fix some problems, but some can not be fixed. So just remove that offending commit and related ones including: f7210e6c4ac7 ("mm/memblock.c: use CONFIG_HAVE_MEMBLOCK_NODE_MAP to protect movablecore_map in memblock_overlaps_region().") 01a178a94e8e ("acpi, memory-hotplug: support getting hotplug info from SRAT") 27168d38fa20 ("acpi, memory-hotplug: extend movablemem_map ranges to the end of node") e8d195525809 ("acpi, memory-hotplug: parse SRAT before memblock is ready") fb06bc8e5f42 ("page_alloc: bootmem limit with movablecore_map") 42f47e27e761 ("page_alloc: make movablemem_map have higher priority") 6981ec31146c ("page_alloc: introduce zone_movable_limit[] to keep movable limit for nodes") 34b71f1e04fc ("page_alloc: add movable_memmap kernel parameter") 4d59a75125d5 ("x86: get pg_data_t's memory from other node") Later we should have patches that will make sure kernel put page table and vmemmap on local node ram instead of push them down to node0. Also need to find way to put other kernel used ram to local node ram. Reported-by: Tim Gardner Reported-by: Don Morris Bisected-by: Don Morris Tested-by: Don Morris Signed-off-by: Yinghai Lu Cc: Tony Luck Cc: Thomas Renninger Cc: Tejun Heo Cc: Tang Chen Cc: Yasuaki Ishimatsu Signed-off-by: Linus Torvalds --- include/linux/acpi.h | 8 -------- include/linux/memblock.h | 2 -- include/linux/mm.h | 18 ------------------ 3 files changed, 28 deletions(-) (limited to 'include/linux') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index f46cfd73a553..bcbdd7484e58 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -485,14 +485,6 @@ static inline bool acpi_driver_match_device(struct device *dev, #endif /* !CONFIG_ACPI */ -#ifdef CONFIG_ACPI_NUMA -void __init early_parse_srat(void); -#else -static inline void early_parse_srat(void) -{ -} -#endif - #ifdef CONFIG_ACPI void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state, u32 pm1a_ctrl, u32 pm1b_ctrl)); diff --git a/include/linux/memblock.h b/include/linux/memblock.h index 3e5ecb2d790e..f388203db7e8 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -42,7 +42,6 @@ struct memblock { extern struct memblock memblock; extern int memblock_debug; -extern struct movablemem_map movablemem_map; #define memblock_dbg(fmt, ...) \ if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) @@ -61,7 +60,6 @@ int memblock_reserve(phys_addr_t base, phys_addr_t size); void memblock_trim_memory(phys_addr_t align); #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP - void __next_mem_pfn_range(int *idx, int nid, unsigned long *out_start_pfn, unsigned long *out_end_pfn, int *out_nid); diff --git a/include/linux/mm.h b/include/linux/mm.h index e7c3f9a0111a..1ede55f292c2 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1333,24 +1333,6 @@ extern void free_bootmem_with_active_regions(int nid, unsigned long max_low_pfn); extern void sparse_memory_present_with_active_regions(int nid); -#define MOVABLEMEM_MAP_MAX MAX_NUMNODES -struct movablemem_entry { - unsigned long start_pfn; /* start pfn of memory segment */ - unsigned long end_pfn; /* end pfn of memory segment (exclusive) */ -}; - -struct movablemem_map { - bool acpi; /* true if using SRAT info */ - int nr_map; - struct movablemem_entry map[MOVABLEMEM_MAP_MAX]; - nodemask_t numa_nodes_hotplug; /* on which nodes we specify memory */ - nodemask_t numa_nodes_kernel; /* on which nodes kernel resides in */ -}; - -extern void __init insert_movablemem_map(unsigned long start_pfn, - unsigned long end_pfn); -extern int __init movablemem_map_overlap(unsigned long start_pfn, - unsigned long end_pfn); #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */ #if !defined(CONFIG_HAVE_MEMBLOCK_NODE_MAP) && \ -- cgit v1.2.3 From 5698c50d9da4ab2f57d98c64ea97675dcaf2a608 Mon Sep 17 00:00:00 2001 From: James Hogan Date: Tue, 9 Oct 2012 10:54:47 +0100 Subject: metag: Internal and external irqchips Meta core internal interrupts (from HWSTATMETA and friends) are vectored onto the TR1 core trigger for the current thread. This is demultiplexed in irq-metag.c to individual Linux IRQs for each internal interrupt. External SoC interrupts (from HWSTATEXT and friends) are vectored onto the TR2 core trigger for the current thread. This is demultiplexed in irq-metag-ext.c to individual Linux IRQs for each external SoC interrupt. The external irqchip has devicetree bindings for configuring the number of irq banks and the type of masking available. Signed-off-by: James Hogan Cc: Arnd Bergmann Cc: Grant Likely Cc: Rob Herring Cc: Rob Landley Cc: Dom Cobley Cc: Simon Arlott Cc: Viresh Kumar Cc: Maxime Ripard Cc: devicetree-discuss@lists.ozlabs.org Cc: linux-doc@vger.kernel.org --- include/linux/irqchip/metag-ext.h | 33 +++++++++++++++++++++++++++++++++ include/linux/irqchip/metag.h | 24 ++++++++++++++++++++++++ 2 files changed, 57 insertions(+) create mode 100644 include/linux/irqchip/metag-ext.h create mode 100644 include/linux/irqchip/metag.h (limited to 'include/linux') diff --git a/include/linux/irqchip/metag-ext.h b/include/linux/irqchip/metag-ext.h new file mode 100644 index 000000000000..697af0fe7c5a --- /dev/null +++ b/include/linux/irqchip/metag-ext.h @@ -0,0 +1,33 @@ +/* + * Copyright (C) 2012 Imagination Technologies + */ + +#ifndef _LINUX_IRQCHIP_METAG_EXT_H_ +#define _LINUX_IRQCHIP_METAG_EXT_H_ + +struct irq_data; +struct platform_device; + +/* called from core irq code at init */ +int init_external_IRQ(void); + +/* + * called from SoC init_irq() callback to dynamically indicate the lack of + * HWMASKEXT registers. + */ +void meta_intc_no_mask(void); + +/* + * These allow SoCs to specialise the interrupt controller from their init_irq + * callbacks. + */ + +extern struct irq_chip meta_intc_edge_chip; +extern struct irq_chip meta_intc_level_chip; + +/* this should be called in the mask callback */ +void meta_intc_mask_irq_simple(struct irq_data *data); +/* this should be called in the unmask callback */ +void meta_intc_unmask_irq_simple(struct irq_data *data); + +#endif /* _LINUX_IRQCHIP_METAG_EXT_H_ */ diff --git a/include/linux/irqchip/metag.h b/include/linux/irqchip/metag.h new file mode 100644 index 000000000000..4ebdfb3101ab --- /dev/null +++ b/include/linux/irqchip/metag.h @@ -0,0 +1,24 @@ +/* + * Copyright (C) 2011 Imagination Technologies + */ + +#ifndef _LINUX_IRQCHIP_METAG_H_ +#define _LINUX_IRQCHIP_METAG_H_ + +#include + +#ifdef CONFIG_METAG_PERFCOUNTER_IRQS +extern int init_internal_IRQ(void); +extern int internal_irq_map(unsigned int hw); +#else +static inline int init_internal_IRQ(void) +{ + return 0; +} +static inline int internal_irq_map(unsigned int hw) +{ + return -EINVAL; +} +#endif + +#endif /* _LINUX_IRQCHIP_METAG_H_ */ -- cgit v1.2.3 From 9ca52ed979b6b45ae480a5fc56d593efb3bf16e8 Mon Sep 17 00:00:00 2001 From: James Hogan Date: Tue, 16 Oct 2012 10:16:14 +0100 Subject: mm: define VM_GROWSUP for CONFIG_METAG Commit cc2383ec06be093789469852e1fe96e1148e9a2c ("mm: introduce arch-specific vma flag VM_ARCH_1") merged in v3.7-rc1. The above commit combined several arch-specific vma flags into one, and in the process it changed the VM_GROWSUP definition to depend on specific architectures rather than CONFIG_STACK_GROWSUP. Therefore add an ifdef for CONFIG_METAG to also set VM_GROWSUP. Signed-off-by: James Hogan Cc: Konstantin Khlebnikov Cc: Andrew Morton Cc: Mel Gorman Cc: Michel Lespinasse Cc: Al Viro Cc: linux-mm@kvack.org --- include/linux/mm.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 66e2f7c61e5c..44ac3dc363e7 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -114,6 +114,8 @@ extern unsigned int kobjsize(const void *objp); # define VM_SAO VM_ARCH_1 /* Strong Access Ordering (powerpc) */ #elif defined(CONFIG_PARISC) # define VM_GROWSUP VM_ARCH_1 +#elif defined(CONFIG_METAG) +# define VM_GROWSUP VM_ARCH_1 #elif defined(CONFIG_IA64) # define VM_GROWSUP VM_ARCH_1 #elif !defined(CONFIG_MMU) -- cgit v1.2.3 From 7f78e0351394052e1a6293e175825eb5c7869507 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sat, 2 Mar 2013 19:39:14 -0800 Subject: fs: Limit sys_mount to only request filesystem modules. Modify the request_module to prefix the file system type with "fs-" and add aliases to all of the filesystems that can be built as modules to match. A common practice is to build all of the kernel code and leave code that is not commonly needed as modules, with the result that many users are exposed to any bug anywhere in the kernel. Looking for filesystems with a fs- prefix limits the pool of possible modules that can be loaded by mount to just filesystems trivially making things safer with no real cost. Using aliases means user space can control the policy of which filesystem modules are auto-loaded by editing /etc/modprobe.d/*.conf with blacklist and alias directives. Allowing simple, safe, well understood work-arounds to known problematic software. This also addresses a rare but unfortunate problem where the filesystem name is not the same as it's module name and module auto-loading would not work. While writing this patch I saw a handful of such cases. The most significant being autofs that lives in the module autofs4. This is relevant to user namespaces because we can reach the request module in get_fs_type() without having any special permissions, and people get uncomfortable when a user specified string (in this case the filesystem type) goes all of the way to request_module. After having looked at this issue I don't think there is any particular reason to perform any filtering or permission checks beyond making it clear in the module request that we want a filesystem module. The common pattern in the kernel is to call request_module() without regards to the users permissions. In general all a filesystem module does once loaded is call register_filesystem() and go to sleep. Which means there is not much attack surface exposed by loading a filesytem module unless the filesystem is mounted. In a user namespace filesystems are not mounted unless .fs_flags = FS_USERNS_MOUNT, which most filesystems do not set today. Acked-by: Serge Hallyn Acked-by: Kees Cook Reported-by: Kees Cook Signed-off-by: "Eric W. Biederman" --- include/linux/fs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 74a907b8b950..2c28271ab9d4 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1825,6 +1825,8 @@ struct file_system_type { struct lock_class_key i_mutex_dir_key; }; +#define MODULE_ALIAS_FS(NAME) MODULE_ALIAS("fs-" NAME) + extern struct dentry *mount_ns(struct file_system_type *fs_type, int flags, void *data, int (*fill_super)(struct super_block *, void *, int)); extern struct dentry *mount_bdev(struct file_system_type *fs_type, -- cgit v1.2.3 From 290502bee239062499297916bb7d21d205e99d62 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Thu, 28 Feb 2013 00:39:37 -0800 Subject: eCryptfs: allow userspace messaging to be disabled When the userspace messaging (for the less common case of userspace key wrap/unwrap via ecryptfsd) is not needed, allow eCryptfs to build with it removed. This saves on kernel code size and reduces potential attack surface by removing the /dev/ecryptfs node. Signed-off-by: Kees Cook Signed-off-by: Tyler Hicks --- include/linux/ecryptfs.h | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ecryptfs.h b/include/linux/ecryptfs.h index 2224a8c0cb64..8d5ab998a222 100644 --- a/include/linux/ecryptfs.h +++ b/include/linux/ecryptfs.h @@ -6,9 +6,8 @@ #define ECRYPTFS_VERSION_MINOR 0x04 #define ECRYPTFS_SUPPORTED_FILE_VERSION 0x03 /* These flags indicate which features are supported by the kernel - * module; userspace tools such as the mount helper read - * ECRYPTFS_VERSIONING_MASK from a sysfs handle in order to determine - * how to behave. */ + * module; userspace tools such as the mount helper read the feature + * bits from a sysfs handle in order to determine how to behave. */ #define ECRYPTFS_VERSIONING_PASSPHRASE 0x00000001 #define ECRYPTFS_VERSIONING_PUBKEY 0x00000002 #define ECRYPTFS_VERSIONING_PLAINTEXT_PASSTHROUGH 0x00000004 @@ -19,13 +18,6 @@ #define ECRYPTFS_VERSIONING_HMAC 0x00000080 #define ECRYPTFS_VERSIONING_FILENAME_ENCRYPTION 0x00000100 #define ECRYPTFS_VERSIONING_GCM 0x00000200 -#define ECRYPTFS_VERSIONING_MASK (ECRYPTFS_VERSIONING_PASSPHRASE \ - | ECRYPTFS_VERSIONING_PLAINTEXT_PASSTHROUGH \ - | ECRYPTFS_VERSIONING_PUBKEY \ - | ECRYPTFS_VERSIONING_XATTR \ - | ECRYPTFS_VERSIONING_MULTKEY \ - | ECRYPTFS_VERSIONING_DEVMISC \ - | ECRYPTFS_VERSIONING_FILENAME_ENCRYPTION) #define ECRYPTFS_MAX_PASSWORD_LENGTH 64 #define ECRYPTFS_MAX_PASSPHRASE_BYTES ECRYPTFS_MAX_PASSWORD_LENGTH #define ECRYPTFS_SALT_SIZE 8 -- cgit v1.2.3 From 43febb27dcdaf9a15e2f362a6d09b0f191c4dcea Mon Sep 17 00:00:00 2001 From: Nishanth Menon Date: Mon, 4 Mar 2013 16:52:38 -0600 Subject: usb: gadget: composite: fix kernel-doc warnings A few trivial fixes for composite driver: Warning(include/linux/usb/composite.h:165): No description found for parameter 'fs_descriptors' Warning(include/linux/usb/composite.h:165): Excess struct/union/enum/typedef member 'descriptors' description in 'usb_function' Warning(include/linux/usb/composite.h:321): No description found for parameter 'gadget_driver' Warning(drivers/usb/gadget/composite.c:1777): Excess function parameter 'bind' description in 'usb_composite_probe' Cc: Greg Kroah-Hartman Cc: Jiri Kosina Cc: linux-usb@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Nishanth Menon Signed-off-by: Felipe Balbi --- include/linux/usb/composite.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index 3c671c1b37f6..8860594d6364 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -60,7 +60,7 @@ struct usb_configuration; * @name: For diagnostics, identifies the function. * @strings: tables of strings, keyed by identifiers assigned during bind() * and by language IDs provided in control requests - * @descriptors: Table of full (or low) speed descriptors, using interface and + * @fs_descriptors: Table of full (or low) speed descriptors, using interface and * string identifiers assigned during @bind(). If this pointer is null, * the function will not be available at full speed (or at low speed). * @hs_descriptors: Table of high speed descriptors, using interface and @@ -290,6 +290,7 @@ enum { * after function notifications * @resume: Notifies configuration when the host restarts USB traffic, * before function notifications + * @gadget_driver: Gadget driver controlling this driver * * Devices default to reporting self powered operation. Devices which rely * on bus powered operation should report this in their @bind method. -- cgit v1.2.3 From 22dfab7fd7fd5a8a2c5556ca0a8fd35fc959abc8 Mon Sep 17 00:00:00 2001 From: Daniel Kurtz Date: Thu, 7 Mar 2013 19:43:33 -0800 Subject: Input: atmel_mxt_ts - Support for touchpad variant This same driver can be used by atmel based touchscreens and touchpads (buttonpads). Platform data may specify a device is a touchpad using the is_tp flag. This will cause the driver to perform some touchpad specific initializations, such as: * register input device name "Atmel maXTouch Touchpad" instead of Touchscreen. * register BTN_LEFT & BTN_TOOL_* event types. * register axis resolution (as a fixed constant, for now) * register BUTTONPAD property * process GPIO buttons using reportid T19 Input event GPIO mapping is done by the platform data key_map array. key_map[x] should contain the KEY or BTN code to send when processing GPIOx from T19. To specify a GPIO as not an input source, populate with KEY_RESERVED, or 0. Signed-off-by: Daniel Kurtz Signed-off-by: Benson Leung Signed-off-by: Nick Dyer Tested-by: Olof Johansson Signed-off-by: Linus Torvalds --- include/linux/i2c/atmel_mxt_ts.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/i2c/atmel_mxt_ts.h b/include/linux/i2c/atmel_mxt_ts.h index f027f7a63511..99e379b74398 100644 --- a/include/linux/i2c/atmel_mxt_ts.h +++ b/include/linux/i2c/atmel_mxt_ts.h @@ -15,6 +15,9 @@ #include +/* For key_map array */ +#define MXT_NUM_GPIO 4 + /* Orient */ #define MXT_NORMAL 0x0 #define MXT_DIAGONAL 0x1 @@ -39,6 +42,8 @@ struct mxt_platform_data { unsigned int voltage; unsigned char orient; unsigned long irqflags; + bool is_tp; + const unsigned int key_map[MXT_NUM_GPIO]; }; #endif /* __LINUX_ATMEL_MXT_TS_H */ -- cgit v1.2.3 From df545d1cd01aab3ba3f687d5423e6c3687b069d8 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Fri, 1 Mar 2013 20:13:46 +0530 Subject: mfd: palmas: Provide irq flags through DT/platform data Currently driver sets the irq type to IRQF_TRIGGER_LOW which is causing interrupt registration failure in ARM based SoCs as: [ 0.208479] genirq: Setting trigger mode 8 for irq 118 failed (gic_set_type+0x0/0xf0) [ 0.208513] dummy 0-0059: Failed to request IRQ 118: -22 Provide the irq flags through platform data if device is registered through board file or get the irq type from DT node property in place of hardcoding the irq flag in driver to support multiple platforms. Also configure the device to generate the interrupt signal according to flag type. Signed-off-by: Laxman Dewangan Signed-off-by: Samuel Ortiz --- include/linux/mfd/palmas.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h index a4d13d7cd001..3bbda22721ea 100644 --- a/include/linux/mfd/palmas.h +++ b/include/linux/mfd/palmas.h @@ -221,6 +221,7 @@ struct palmas_clk_platform_data { }; struct palmas_platform_data { + int irq_flags; int gpio_base; /* bit value to be loaded to the POWER_CTRL register */ -- cgit v1.2.3 From 80e4e6716e43500c5c7d4ff4f73fc1b56f024083 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sat, 2 Mar 2013 15:25:50 +0800 Subject: mfd: tps65912: Declare and use tps65912_irq_exit() Clean up interrupts on exit, silencing a sparse warning caused by tps65912_irq_exit() being defined but not prototyped as we go. Signed-off-by: Mark Brown Signed-off-by: Samuel Ortiz --- include/linux/mfd/tps65912.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/mfd/tps65912.h b/include/linux/mfd/tps65912.h index aaceab402ec5..6d309032dc0d 100644 --- a/include/linux/mfd/tps65912.h +++ b/include/linux/mfd/tps65912.h @@ -323,5 +323,6 @@ int tps65912_device_init(struct tps65912 *tps65912); void tps65912_device_exit(struct tps65912 *tps65912); int tps65912_irq_init(struct tps65912 *tps65912, int irq, struct tps65912_platform_data *pdata); +int tps65912_irq_exit(struct tps65912 *tps65912); #endif /* __LINUX_MFD_TPS65912_H */ -- cgit v1.2.3 From fd860195a4f9d661754345bd06a3adb30d12d882 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 8 Mar 2013 10:47:21 +0800 Subject: mfd: wm831x: Don't forward declare enum wm831x_auxadc We can't forward declare enums. Signed-off-by: Andrew Morton Signed-off-by: Samuel Ortiz --- include/linux/mfd/wm831x/auxadc.h | 2 ++ include/linux/mfd/wm831x/core.h | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mfd/wm831x/auxadc.h b/include/linux/mfd/wm831x/auxadc.h index b132067e9e99..867aa23f9370 100644 --- a/include/linux/mfd/wm831x/auxadc.h +++ b/include/linux/mfd/wm831x/auxadc.h @@ -15,6 +15,8 @@ #ifndef __MFD_WM831X_AUXADC_H__ #define __MFD_WM831X_AUXADC_H__ +struct wm831x; + /* * R16429 (0x402D) - AuxADC Data */ diff --git a/include/linux/mfd/wm831x/core.h b/include/linux/mfd/wm831x/core.h index 4a3b83a77614..76c22648436f 100644 --- a/include/linux/mfd/wm831x/core.h +++ b/include/linux/mfd/wm831x/core.h @@ -20,6 +20,7 @@ #include #include #include +#include /* * Register values. @@ -355,7 +356,6 @@ enum wm831x_parent { }; struct wm831x; -enum wm831x_auxadc; typedef int (*wm831x_auxadc_read_fn)(struct wm831x *wm831x, enum wm831x_auxadc input); -- cgit v1.2.3 From 5857f70c8a62377c2304d8ad27e579881728fc5a Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 4 Mar 2013 14:32:54 -0800 Subject: idr: fix new kernel-doc warnings Fix new kernel-doc warnings in idr: Warning(include/linux/idr.h:113): No description found for parameter 'idr' Warning(include/linux/idr.h:113): Excess function parameter 'idp' description in 'idr_find' Warning(lib/idr.c:232): Excess function parameter 'id' description in 'sub_alloc' Warning(lib/idr.c:232): Excess function parameter 'id' description in 'sub_alloc' Signed-off-by: Randy Dunlap Acked-by: Tejun Heo Signed-off-by: Linus Torvalds --- include/linux/idr.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/idr.h b/include/linux/idr.h index a6f38b5c34e4..8c1f81f823c8 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -99,7 +99,7 @@ static inline void idr_preload_end(void) /** * idr_find - return pointer for given id - * @idp: idr handle + * @idr: idr handle * @id: lookup key * * Return the pointer given the id it has been registered with. A %NULL -- cgit v1.2.3 From ebf47beb660e5580df7bee06d5cf9d37c0f22fac Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Wed, 13 Mar 2013 14:59:30 -0700 Subject: include/linux/res_counter.h needs errno.h alpha allmodconfig: In file included from mm/memcontrol.c:28: include/linux/res_counter.h: In function 'res_counter_set_limit': include/linux/res_counter.h:203: error: 'EBUSY' undeclared (first use in this function) include/linux/res_counter.h:203: error: (Each undeclared identifier is reported only once include/linux/res_counter.h:203: error: for each function it appears in.) Cc: Kamezawa Hiroyuki Cc: Glauber Costa Cc: Tejun Heo Cc: Frederic Weisbecker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/res_counter.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/res_counter.h b/include/linux/res_counter.h index 5ae8456d9670..c23099413ad6 100644 --- a/include/linux/res_counter.h +++ b/include/linux/res_counter.h @@ -14,6 +14,7 @@ */ #include +#include /* * The core object. the cgroup that wishes to account for some -- cgit v1.2.3 From c8615d3716fe327c2540cf514a34b227dc9b39e8 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 13 Mar 2013 14:59:42 -0700 Subject: idr: deprecate idr_pre_get() and idr_get_new[_above]() Now that all in-kernel users are converted to ues the new alloc interface, mark the old interface deprecated. We should be able to remove these in a few releases. Signed-off-by: Tejun Heo Cc: Rusty Russell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/idr.h | 66 ++++++++++++++++++++++++++++++++++++++++------------- 1 file changed, 50 insertions(+), 16 deletions(-) (limited to 'include/linux') diff --git a/include/linux/idr.h b/include/linux/idr.h index 8c1f81f823c8..2640c7e99e51 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -73,8 +73,6 @@ struct idr { */ void *idr_find_slowpath(struct idr *idp, int id); -int idr_pre_get(struct idr *idp, gfp_t gfp_mask); -int idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id); void idr_preload(gfp_t gfp_mask); int idr_alloc(struct idr *idp, void *ptr, int start, int end, gfp_t gfp_mask); int idr_for_each(struct idr *idp, @@ -119,19 +117,6 @@ static inline void *idr_find(struct idr *idr, int id) return idr_find_slowpath(idr, id); } -/** - * idr_get_new - allocate new idr entry - * @idp: idr handle - * @ptr: pointer you want associated with the id - * @id: pointer to the allocated handle - * - * Simple wrapper around idr_get_new_above() w/ @starting_id of zero. - */ -static inline int idr_get_new(struct idr *idp, void *ptr, int *id) -{ - return idr_get_new_above(idp, ptr, 0, id); -} - /** * idr_for_each_entry - iterate over an idr's elements of a given type * @idp: idr handle @@ -143,7 +128,56 @@ static inline int idr_get_new(struct idr *idp, void *ptr, int *id) entry != NULL; \ ++id, entry = (typeof(entry))idr_get_next((idp), &(id))) -void __idr_remove_all(struct idr *idp); /* don't use */ +/* + * Don't use the following functions. These exist only to suppress + * deprecated warnings on EXPORT_SYMBOL()s. + */ +int __idr_pre_get(struct idr *idp, gfp_t gfp_mask); +int __idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id); +void __idr_remove_all(struct idr *idp); + +/** + * idr_pre_get - reserve resources for idr allocation + * @idp: idr handle + * @gfp_mask: memory allocation flags + * + * Part of old alloc interface. This is going away. Use + * idr_preload[_end]() and idr_alloc() instead. + */ +static inline int __deprecated idr_pre_get(struct idr *idp, gfp_t gfp_mask) +{ + return __idr_pre_get(idp, gfp_mask); +} + +/** + * idr_get_new_above - allocate new idr entry above or equal to a start id + * @idp: idr handle + * @ptr: pointer you want associated with the id + * @starting_id: id to start search at + * @id: pointer to the allocated handle + * + * Part of old alloc interface. This is going away. Use + * idr_preload[_end]() and idr_alloc() instead. + */ +static inline int __deprecated idr_get_new_above(struct idr *idp, void *ptr, + int starting_id, int *id) +{ + return __idr_get_new_above(idp, ptr, starting_id, id); +} + +/** + * idr_get_new - allocate new idr entry + * @idp: idr handle + * @ptr: pointer you want associated with the id + * @id: pointer to the allocated handle + * + * Part of old alloc interface. This is going away. Use + * idr_preload[_end]() and idr_alloc() instead. + */ +static inline int __deprecated idr_get_new(struct idr *idp, void *ptr, int *id) +{ + return __idr_get_new_above(idp, ptr, 0, id); +} /** * idr_remove_all - remove all ids from the given idr tree -- cgit v1.2.3 From f65846a1800ef8c48d1ae1973c30dae4c356a800 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Sat, 9 Mar 2013 07:38:41 -0800 Subject: list: Fix double fetch of pointer in hlist_entry_safe() The current version of hlist_entry_safe() fetches the pointer twice, once to test for NULL and the other to compute the offset back to the enclosing structure. This is OK for normal lock-based use because in that case, the pointer cannot change. However, when the pointer is protected by RCU (as in "rcu_dereference(p)"), then the pointer can change at any time. This use case can result in the following sequence of events: 1. CPU 0 invokes hlist_entry_safe(), fetches the RCU-protected pointer as sees that it is non-NULL. 2. CPU 1 invokes hlist_del_rcu(), deleting the entry that CPU 0 just fetched a pointer to. Because this is the last entry in the list, the pointer fetched by CPU 0 is now NULL. 3. CPU 0 refetches the pointer, obtains NULL, and then gets a NULL-pointer crash. This commit therefore applies gcc's "({ })" statement expression to create a temporary variable so that the specified pointer is fetched only once, avoiding the above sequence of events. Please note that it is the caller's responsibility to use rcu_dereference() as needed. This allows RCU-protected uses to work correctly without imposing any additional overhead on the non-RCU case. Many thanks to Eric Dumazet for spotting root cause! Reported-by: CAI Qian Reported-by: Eric Dumazet Signed-off-by: Paul E. McKenney Tested-by: Li Zefan --- include/linux/list.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/list.h b/include/linux/list.h index d991cc147c98..6a1f8df9144b 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -667,7 +667,9 @@ static inline void hlist_move_list(struct hlist_head *old, pos = n) #define hlist_entry_safe(ptr, type, member) \ - (ptr) ? hlist_entry(ptr, type, member) : NULL + ({ typeof(ptr) ____ptr = (ptr); \ + ____ptr ? hlist_entry(____ptr, type, member) : NULL; \ + }) /** * hlist_for_each_entry - iterate over list of given type -- cgit v1.2.3 From 1d9d8639c063caf6efc2447f5f26aa637f844ff6 Mon Sep 17 00:00:00 2001 From: Stephane Eranian Date: Fri, 15 Mar 2013 14:26:07 +0100 Subject: perf,x86: fix kernel crash with PEBS/BTS after suspend/resume This patch fixes a kernel crash when using precise sampling (PEBS) after a suspend/resume. Turns out the CPU notifier code is not invoked on CPU0 (BP). Therefore, the DS_AREA (used by PEBS) is not restored properly by the kernel and keeps it power-on/resume value of 0 causing any PEBS measurement to crash when running on CPU0. The workaround is to add a hook in the actual resume code to restore the DS Area MSR value. It is invoked for all CPUS. So for all but CPU0, the DS_AREA will be restored twice but this is harmless. Reported-by: Linus Torvalds Signed-off-by: Stephane Eranian Signed-off-by: Linus Torvalds --- include/linux/perf_event.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index e47ee462c2f2..71caed8626be 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -758,6 +758,7 @@ extern void perf_event_enable(struct perf_event *event); extern void perf_event_disable(struct perf_event *event); extern int __perf_event_disable(void *info); extern void perf_event_task_tick(void); +extern void perf_restore_debug_store(void); #else static inline void perf_event_task_sched_in(struct task_struct *prev, @@ -797,6 +798,7 @@ static inline void perf_event_enable(struct perf_event *event) { } static inline void perf_event_disable(struct perf_event *event) { } static inline int __perf_event_disable(void *info) { return -1; } static inline void perf_event_task_tick(void) { } +static inline void perf_restore_debug_store(void) { } #endif #define perf_output_put(handle, x) perf_output_copy((handle), &(x), sizeof(x)) -- cgit v1.2.3 From 6c4d3bc99b3341067775efd4d9d13cc8e655fd7c Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Sun, 17 Mar 2013 15:49:10 -0700 Subject: perf,x86: fix link failure for non-Intel configs Commit 1d9d8639c063 ("perf,x86: fix kernel crash with PEBS/BTS after suspend/resume") introduces a link failure since perf_restore_debug_store() is only defined for CONFIG_CPU_SUP_INTEL: arch/x86/power/built-in.o: In function `restore_processor_state': (.text+0x45c): undefined reference to `perf_restore_debug_store' Fix it by defining the dummy function appropriately. Signed-off-by: David Rientjes Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds --- include/linux/perf_event.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 71caed8626be..1d795df6f4cf 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -758,7 +758,6 @@ extern void perf_event_enable(struct perf_event *event); extern void perf_event_disable(struct perf_event *event); extern int __perf_event_disable(void *info); extern void perf_event_task_tick(void); -extern void perf_restore_debug_store(void); #else static inline void perf_event_task_sched_in(struct task_struct *prev, @@ -798,6 +797,11 @@ static inline void perf_event_enable(struct perf_event *event) { } static inline void perf_event_disable(struct perf_event *event) { } static inline int __perf_event_disable(void *info) { return -1; } static inline void perf_event_task_tick(void) { } +#endif + +#if defined(CONFIG_PERF_EVENTS) && defined(CONFIG_CPU_SUP_INTEL) +extern void perf_restore_debug_store(void); +#else static inline void perf_restore_debug_store(void) { } #endif -- cgit v1.2.3