From e4e4e534faa3c2be4e165ce414f44b76ada7208c Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Mon, 14 Apr 2008 08:50:02 +0200 Subject: sched clock: revert various sched_clock() changes Found an interactivity problem on a quad core test-system - simple CPU loops would occasionally delay the system un an unacceptable way. After much debugging with Peter Zijlstra it turned out that the problem is caused by the string of sched_clock() changes - they caused the CPU clock to jump backwards a bit - which confuses the scheduler arithmetics. (which is unsigned for performance reasons) So revert: # c300ba2: sched_clock: and multiplier for TSC to gtod drift # c0c8773: sched_clock: only update deltas with local reads. # af52a90: sched_clock: stop maximum check on NO HZ # f7cce27: sched_clock: widen the max and min time This solves the interactivity problems. Signed-off-by: Ingo Molnar Acked-by: Peter Zijlstra Acked-by: Mike Galbraith --- include/linux/sched.h | 17 +---------------- 1 file changed, 1 insertion(+), 16 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index 5270d449ff9d..ea436bc1a0e2 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1572,28 +1572,13 @@ static inline void sched_clock_idle_sleep_event(void) static inline void sched_clock_idle_wakeup_event(u64 delta_ns) { } - -#ifdef CONFIG_NO_HZ -static inline void sched_clock_tick_stop(int cpu) -{ -} - -static inline void sched_clock_tick_start(int cpu) -{ -} -#endif - -#else /* CONFIG_HAVE_UNSTABLE_SCHED_CLOCK */ +#else extern void sched_clock_init(void); extern u64 sched_clock_cpu(int cpu); extern void sched_clock_tick(void); extern void sched_clock_idle_sleep_event(void); extern void sched_clock_idle_wakeup_event(u64 delta_ns); -#ifdef CONFIG_NO_HZ -extern void sched_clock_tick_stop(int cpu); -extern void sched_clock_tick_start(int cpu); #endif -#endif /* CONFIG_HAVE_UNSTABLE_SCHED_CLOCK */ /* * For kernel-internal use: high-speed (but slightly incorrect) per-cpu -- cgit v1.2.3 From 419ca3f13532793b81aff09f80c60af3eacbb43d Mon Sep 17 00:00:00 2001 From: David Miller Date: Tue, 29 Jul 2008 21:45:03 -0700 Subject: lockdep: fix combinatorial explosion in lock subgraph traversal When we traverse the graph, either forwards or backwards, we are interested in whether a certain property exists somewhere in a node reachable in the graph. Therefore it is never necessary to traverse through a node more than once to get a correct answer to the given query. Take advantage of this property using a global ID counter so that we need not clear all the markers in all the lock_class entries before doing a traversal. A new ID is choosen when we start to traverse, and we continue through a lock_class only if it's ID hasn't been marked with the new value yet. This short-circuiting is essential especially for high CPU count systems. The scheduler has a runqueue per cpu, and needs to take two runqueue locks at a time, which leads to long chains of backwards and forwards subgraphs from these runqueue lock nodes. Without the short-circuit implemented here, a graph traversal on a runqueue lock can take up to (1 << (N - 1)) checks on a system with N cpus. For anything more than 16 cpus or so, lockdep will eventually bring the machine to a complete standstill. Signed-off-by: David S. Miller Acked-by: Peter Zijlstra Signed-off-by: Ingo Molnar --- include/linux/lockdep.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 2486eb4edbf1..1bfdc30bb0af 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -89,6 +89,7 @@ struct lock_class { struct lockdep_subclass_key *key; unsigned int subclass; + unsigned int dep_gen_id; /* * IRQ/softirq usage tracking bits: -- cgit v1.2.3 From ff4cc1de2401ad44ae084c3f5a9e898af0879520 Mon Sep 17 00:00:00 2001 From: Karsten Keil Date: Wed, 30 Jul 2008 18:26:58 +0200 Subject: mISDN cleanup user interface The channelmap should have the same size on 32 and 64 bit systems and should not depend on endianess. Thanks to David Woodhouse for spotting this. Signed-off-by: Karsten Keil --- include/linux/mISDNif.h | 32 +++++++++++++++++++++++++++----- 1 file changed, 27 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mISDNif.h b/include/linux/mISDNif.h index 5c948f337817..8f2d60da04e7 100644 --- a/include/linux/mISDNif.h +++ b/include/linux/mISDNif.h @@ -37,7 +37,7 @@ */ #define MISDN_MAJOR_VERSION 1 #define MISDN_MINOR_VERSION 0 -#define MISDN_RELEASE 18 +#define MISDN_RELEASE 19 /* primitives for information exchange * generell format @@ -242,7 +242,8 @@ struct mISDNhead { #define TEI_SAPI 63 #define CTRL_SAPI 0 -#define MISDN_CHMAP_SIZE 4 +#define MISDN_MAX_CHANNEL 127 +#define MISDN_CHMAP_SIZE ((MISDN_MAX_CHANNEL + 1) >> 3) #define SOL_MISDN 0 @@ -275,11 +276,32 @@ struct mISDN_devinfo { u_int Dprotocols; u_int Bprotocols; u_int protocol; - u_long channelmap[MISDN_CHMAP_SIZE]; + u_char channelmap[MISDN_CHMAP_SIZE]; u_int nrbchan; char name[MISDN_MAX_IDLEN]; }; +static inline int +test_channelmap(u_int nr, u_char *map) +{ + if (nr <= MISDN_MAX_CHANNEL) + return map[nr >> 3] & (1 << (nr & 7)); + else + return 0; +} + +static inline void +set_channelmap(u_int nr, u_char *map) +{ + map[nr >> 3] |= (1 << (nr & 7)); +} + +static inline void +clear_channelmap(u_int nr, u_char *map) +{ + map[nr >> 3] &= ~(1 << (nr & 7)); +} + /* CONTROL_CHANNEL parameters */ #define MISDN_CTRL_GETOP 0x0000 #define MISDN_CTRL_LOOP 0x0001 @@ -405,7 +427,7 @@ struct mISDNdevice { u_int Dprotocols; u_int Bprotocols; u_int nrbchan; - u_long channelmap[MISDN_CHMAP_SIZE]; + u_char channelmap[MISDN_CHMAP_SIZE]; struct list_head bchannels; struct mISDNchannel *teimgr; struct device dev; @@ -430,7 +452,7 @@ struct mISDNstack { #endif }; -/* global alloc/queue dunctions */ +/* global alloc/queue functions */ static inline struct sk_buff * mI_alloc_skb(unsigned int len, gfp_t gfp_mask) -- cgit v1.2.3 From 85ebd00334099fd5d296bcae74a66c943d46686d Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Sat, 2 Aug 2008 19:12:23 +0200 Subject: Fix IHEX firmware generation/loading Fix both the IHEX firmware generation (len field always null, and EOF marker a byte too short) and loading (struct ihex_binrec needs to be packed to reflect the on-disk structure). Signed-off-by: Marc Zyngier Signed-off-by: David Woodhouse --- include/linux/ihex.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ihex.h b/include/linux/ihex.h index 2baace2788a7..31d8629e75a1 100644 --- a/include/linux/ihex.h +++ b/include/linux/ihex.h @@ -18,7 +18,7 @@ struct ihex_binrec { __be32 addr; __be16 len; uint8_t data[0]; -} __attribute__((aligned(4))); +} __attribute__((packed)); /* Find the next record, taking into account the 4-byte alignment */ static inline const struct ihex_binrec * -- cgit v1.2.3 From cf368d2f9aced8adc8bd6b1f04294a71551d5fce Mon Sep 17 00:00:00 2001 From: Alexander Beregalov Date: Sun, 3 Aug 2008 03:03:57 +0400 Subject: drivers/video/console/promcon.c: fix build error drivers/video/console/promcon.c:158: error: implicit declaration of function 'con_protect_unimap' Introduced by commit a29ccf6f823a84d89e1c7aaaf221cf7282022024 ("embedded: fix vc_translate operator precedence"). Signed-off-by: Alexander Beregalov Cc: Tim Bird Signed-off-by: David Woodhouse --- 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 8c8119ffee12..1c78d56c57e5 100644 --- a/include/linux/vt_kern.h +++ b/include/linux/vt_kern.h @@ -86,6 +86,7 @@ int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc); #define con_copy_unimap(d, s) (0) #define con_get_unimap(vc, ct, uct, list) (-EINVAL) #define con_free_unimap(vc) do { ; } while (0) +#define con_protect_unimap(vc, rdonly) do { ; } while (0) #define vc_translate(vc, c) (c) #endif -- cgit v1.2.3 From 63870295de9adb365cd121dab94379b8cfdf986a Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Mon, 4 Aug 2008 10:39:46 +0900 Subject: maple: Clean up maple_driver_register/unregister routines. These were completely inconsistent. Clean these up to take a maple_driver pointer directly for consistency. Signed-off-by: Paul Mundt --- include/linux/maple.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/maple.h b/include/linux/maple.h index c853b1066018..b2b7ce0fb1f7 100644 --- a/include/linux/maple.h +++ b/include/linux/maple.h @@ -70,7 +70,9 @@ void maple_getcond_callback(struct maple_device *dev, void (*callback) (struct mapleq * mq), unsigned long interval, unsigned long function); -int maple_driver_register(struct device_driver *drv); +int maple_driver_register(struct maple_driver *); +void maple_driver_unregister(struct maple_driver *); + int maple_add_packet_sleeps(struct maple_device *mdev, u32 function, u32 command, u32 length, void *data); void maple_clear_dev(struct maple_device *mdev); -- cgit v1.2.3 From 617870632de6739fca0893f3e6648e9ae1bd0ddb Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Mon, 4 Aug 2008 10:58:24 +0900 Subject: maple: Kill useless private_data pointer. We can simply wrap in to the dev_set/get_drvdata(), there's no reason to track an extra level of private data on top of the struct device. Signed-off-by: Paul Mundt --- include/linux/maple.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/maple.h b/include/linux/maple.h index b2b7ce0fb1f7..c23d3f51ba40 100644 --- a/include/linux/maple.h +++ b/include/linux/maple.h @@ -51,7 +51,6 @@ struct maple_devinfo { struct maple_device { struct maple_driver *driver; struct mapleq *mq; - void *private_data; void (*callback) (struct mapleq * mq); unsigned long when, interval, function; struct maple_devinfo devinfo; @@ -80,4 +79,7 @@ void maple_clear_dev(struct maple_device *mdev); #define to_maple_dev(n) container_of(n, struct maple_device, dev) #define to_maple_driver(n) container_of(n, struct maple_driver, drv) +#define maple_get_drvdata(d) dev_get_drvdata(&(d)->dev) +#define maple_set_drvdata(d,p) dev_set_drvdata(&(d)->dev, (p)) + #endif /* __LINUX_MAPLE_H */ -- cgit v1.2.3 From 98f7dfd86cbbd377e2cbc293529681b914296f68 Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Fri, 18 Jul 2008 13:52:59 +0800 Subject: mac80211: pass dtim_period to low level driver This patch adds the dtim_period in ieee80211_bss_conf, this allows the low level driver to know the dtim_period, and to plan power save accordingly. Signed-off-by: Emmanuel Grumbach Signed-off-by: Tomas Winkler Signed-off-by: Zhu Yi Acked-by: Johannes Berg Signed-off-by: John W. Linville --- include/linux/ieee80211.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index a1630ba0b87c..7f4df7c7659d 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -506,6 +506,19 @@ struct ieee80211_channel_sw_ie { u8 count; } __attribute__ ((packed)); +/** + * struct ieee80211_tim + * + * This structure refers to "Traffic Indication Map information element" + */ +struct ieee80211_tim_ie { + u8 dtim_count; + u8 dtim_period; + u8 bitmap_ctrl; + /* variable size: 1 - 251 bytes */ + u8 virtual_map[0]; +} __attribute__ ((packed)); + struct ieee80211_mgmt { __le16 frame_control; __le16 duration; -- cgit v1.2.3 From 1a3f7d98e5f50f21ce6fb1406a35531d9596c5c6 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Mon, 4 Aug 2008 16:50:38 -0700 Subject: Revert "UFS: add const to parser token table" This reverts commit f9247273cb69ba101877e946d2d83044409cc8c5 (and fb2e405fc1fc8b20d9c78eaa1c7fd5a297efde43 - "fix fs/nfs/nfsroot.c compilation" - that fixed a missed conversion). The changes cause problems for at least the sparc build. Let's re-do them when the exact issues are resolved. Requested-by: Andrew Morton Requested-by: Steven Whitehouse Cc: David Miller Signed-off-by: Linus Torvalds --- include/linux/parser.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/parser.h b/include/linux/parser.h index cc554ca8bc78..7dcd05075756 100644 --- a/include/linux/parser.h +++ b/include/linux/parser.h @@ -14,7 +14,7 @@ struct match_token { const char *pattern; }; -typedef const struct match_token match_table_t[]; +typedef struct match_token match_table_t[]; /* Maximum number of arguments that match_token will find in a pattern */ enum {MAX_OPT_ARGS = 3}; -- cgit v1.2.3 From 115a326c1e5cab457924356123bbfd7d783ecf9d Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Mon, 4 Aug 2008 13:56:01 -0700 Subject: tracehook: kerneldoc fix My last change to tracehook.h made it confuse the kerneldoc parser. Move the #define's before the comment so it's happy again. Signed-off-by: Roland McGrath Acked-by: Randy Dunlap Signed-off-by: Linus Torvalds --- include/linux/tracehook.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h index 12532839f508..ab3ef7aefa95 100644 --- a/include/linux/tracehook.h +++ b/include/linux/tracehook.h @@ -487,6 +487,9 @@ static inline int tracehook_notify_jctl(int notify, int why) return notify || (current->ptrace & PT_PTRACED); } +#define DEATH_REAP -1 +#define DEATH_DELAYED_GROUP_LEADER -2 + /** * tracehook_notify_death - task is dead, ready to notify parent * @task: @current task now exiting @@ -501,8 +504,6 @@ static inline int tracehook_notify_jctl(int notify, int why) * * Called with write_lock_irq(&tasklist_lock) held. */ -#define DEATH_REAP -1 -#define DEATH_DELAYED_GROUP_LEADER -2 static inline int tracehook_notify_death(struct task_struct *task, void **death_cookie, int group_dead) { -- cgit v1.2.3 From 529ae9aaa08378cfe2a4350bded76f32cc8ff0ce Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Sat, 2 Aug 2008 12:01:03 +0200 Subject: mm: rename page trylock Converting page lock to new locking bitops requires a change of page flag operation naming, so we might as well convert it to something nicer (!TestSetPageLocked_Lock => trylock_page, SetPageLocked => set_page_locked). This also facilitates lockdeping of page lock. Signed-off-by: Nick Piggin Acked-by: KOSAKI Motohiro Acked-by: Peter Zijlstra Acked-by: Andrew Morton Acked-by: Benjamin Herrenschmidt Signed-off-by: Linus Torvalds --- include/linux/page-flags.h | 2 +- include/linux/pagemap.h | 67 ++++++++++++++++++++++++++++------------------ 2 files changed, 42 insertions(+), 27 deletions(-) (limited to 'include/linux') diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 25aaccdb2f26..c74d3e875314 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -163,7 +163,7 @@ static inline int Page##uname(struct page *page) \ struct page; /* forward declaration */ -PAGEFLAG(Locked, locked) TESTSCFLAG(Locked, locked) +TESTPAGEFLAG(Locked, locked) PAGEFLAG(Error, error) PAGEFLAG(Referenced, referenced) TESTCLEARFLAG(Referenced, referenced) PAGEFLAG(Dirty, dirty) TESTSCFLAG(Dirty, dirty) __CLEARPAGEFLAG(Dirty, dirty) diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 69ed3cb1197a..5da31c12101c 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -250,29 +250,6 @@ static inline struct page *read_mapping_page(struct address_space *mapping, return read_cache_page(mapping, index, filler, data); } -int add_to_page_cache_locked(struct page *page, struct address_space *mapping, - pgoff_t index, gfp_t gfp_mask); -int add_to_page_cache_lru(struct page *page, struct address_space *mapping, - pgoff_t index, gfp_t gfp_mask); -extern void remove_from_page_cache(struct page *page); -extern void __remove_from_page_cache(struct page *page); - -/* - * Like add_to_page_cache_locked, but used to add newly allocated pages: - * the page is new, so we can just run SetPageLocked() against it. - */ -static inline int add_to_page_cache(struct page *page, - struct address_space *mapping, pgoff_t offset, gfp_t gfp_mask) -{ - int error; - - SetPageLocked(page); - error = add_to_page_cache_locked(page, mapping, offset, gfp_mask); - if (unlikely(error)) - ClearPageLocked(page); - return error; -} - /* * Return byte-offset into filesystem object for page. */ @@ -294,13 +271,28 @@ extern int __lock_page_killable(struct page *page); extern void __lock_page_nosync(struct page *page); extern void unlock_page(struct page *page); +static inline void set_page_locked(struct page *page) +{ + set_bit(PG_locked, &page->flags); +} + +static inline void clear_page_locked(struct page *page) +{ + clear_bit(PG_locked, &page->flags); +} + +static inline int trylock_page(struct page *page) +{ + return !test_and_set_bit(PG_locked, &page->flags); +} + /* * lock_page may only be called if we have the page's inode pinned. */ static inline void lock_page(struct page *page) { might_sleep(); - if (TestSetPageLocked(page)) + if (!trylock_page(page)) __lock_page(page); } @@ -312,7 +304,7 @@ static inline void lock_page(struct page *page) static inline int lock_page_killable(struct page *page) { might_sleep(); - if (TestSetPageLocked(page)) + if (!trylock_page(page)) return __lock_page_killable(page); return 0; } @@ -324,7 +316,7 @@ static inline int lock_page_killable(struct page *page) static inline void lock_page_nosync(struct page *page) { might_sleep(); - if (TestSetPageLocked(page)) + if (!trylock_page(page)) __lock_page_nosync(page); } @@ -409,4 +401,27 @@ static inline int fault_in_pages_readable(const char __user *uaddr, int size) return ret; } +int add_to_page_cache_locked(struct page *page, struct address_space *mapping, + pgoff_t index, gfp_t gfp_mask); +int add_to_page_cache_lru(struct page *page, struct address_space *mapping, + pgoff_t index, gfp_t gfp_mask); +extern void remove_from_page_cache(struct page *page); +extern void __remove_from_page_cache(struct page *page); + +/* + * Like add_to_page_cache_locked, but used to add newly allocated pages: + * the page is new, so we can just run set_page_locked() against it. + */ +static inline int add_to_page_cache(struct page *page, + struct address_space *mapping, pgoff_t offset, gfp_t gfp_mask) +{ + int error; + + set_page_locked(page); + error = add_to_page_cache_locked(page, mapping, offset, gfp_mask); + if (unlikely(error)) + clear_page_locked(page); + return error; +} + #endif /* _LINUX_PAGEMAP_H */ -- cgit v1.2.3 From ca5de404ff036a29b25e9a83f6919c9f606c5841 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Sat, 2 Aug 2008 12:02:13 +0200 Subject: fs: rename buffer trylock Like the page lock change, this also requires name change, so convert the raw test_and_set bitop to a trylock. Signed-off-by: Nick Piggin Signed-off-by: Linus Torvalds --- include/linux/buffer_head.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h index 50cfe8ceb478..eadaab44015f 100644 --- a/include/linux/buffer_head.h +++ b/include/linux/buffer_head.h @@ -115,7 +115,6 @@ BUFFER_FNS(Uptodate, uptodate) BUFFER_FNS(Dirty, dirty) TAS_BUFFER_FNS(Dirty, dirty) BUFFER_FNS(Lock, locked) -TAS_BUFFER_FNS(Lock, locked) BUFFER_FNS(Req, req) TAS_BUFFER_FNS(Req, req) BUFFER_FNS(Mapped, mapped) @@ -321,10 +320,15 @@ static inline void wait_on_buffer(struct buffer_head *bh) __wait_on_buffer(bh); } +static inline int trylock_buffer(struct buffer_head *bh) +{ + return likely(!test_and_set_bit(BH_Lock, &bh->b_state)); +} + static inline void lock_buffer(struct buffer_head *bh) { might_sleep(); - if (test_set_buffer_locked(bh)) + if (!trylock_buffer(bh)) __lock_buffer(bh); } -- cgit v1.2.3 From 378a2f090f7a478704a372a4869b8a9ac206234e Mon Sep 17 00:00:00 2001 From: Jarek Poplawski Date: Mon, 4 Aug 2008 22:31:03 -0700 Subject: net_sched: Add qdisc __NET_XMIT_STOLEN flag Patrick McHardy noticed: "The other problem that affects all qdiscs supporting actions is TC_ACT_QUEUED/TC_ACT_STOLEN getting mapped to NET_XMIT_SUCCESS even though the packet is not queued, corrupting upper qdiscs' qlen counters." and later explained: "The reason why it translates it at all seems to be to not increase the drops counter. Within a single qdisc this could be avoided by other means easily, upper qdiscs would still increase the counter when we return anything besides NET_XMIT_SUCCESS though. This means we need a new NET_XMIT return value to indicate this to the upper qdiscs. So I'd suggest to introduce NET_XMIT_STOLEN, return that to upper qdiscs and translate it to NET_XMIT_SUCCESS in dev_queue_xmit, similar to NET_XMIT_BYPASS." David Miller noticed: "Maybe these NET_XMIT_* values being passed around should be a set of bits. They could be composed of base meanings, combined with specific attributes. So you could say "NET_XMIT_DROP | __NET_XMIT_NO_DROP_COUNT" The attributes get masked out by the top-level ->enqueue() caller, such that the base meanings are the only thing that make their way up into the stack. If it's only about communication within the qdisc tree, let's simply code it that way." This patch is trying to realize these ideas. Signed-off-by: Jarek Poplawski 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 ee583f642a9f..abbf5d52ec86 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -64,6 +64,7 @@ struct wireless_dev; #define NET_XMIT_BYPASS 4 /* packet does not leave via dequeue; (TC use only - dev_queue_xmit returns this as NET_XMIT_SUCCESS) */ +#define NET_XMIT_MASK 0xFFFF /* qdisc flags in net/sch_generic.h */ /* Backlog congestion levels */ #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ -- cgit v1.2.3 From cc6533e98a7f3cb7fce9d740da49195c7aa523a4 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Mon, 4 Aug 2008 23:04:08 -0700 Subject: net: Kill plain NET_XMIT_BYPASS. dst_input() was doing something completely absurd, looping on skb->dst->input() if NET_XMIT_BYPASS was seen, but these functions never return such an error. And as a result plain ole' NET_XMIT_BYPASS has no more references and can be completely killed off. Signed-off-by: David S. Miller --- include/linux/netdevice.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index abbf5d52ec86..488c56e649b5 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -61,9 +61,6 @@ struct wireless_dev; #define NET_XMIT_DROP 1 /* skb dropped */ #define NET_XMIT_CN 2 /* congestion notification */ #define NET_XMIT_POLICED 3 /* skb is shot by police */ -#define NET_XMIT_BYPASS 4 /* packet does not leave via dequeue; - (TC use only - dev_queue_xmit - returns this as NET_XMIT_SUCCESS) */ #define NET_XMIT_MASK 0xFFFF /* qdisc flags in net/sch_generic.h */ /* Backlog congestion levels */ -- cgit v1.2.3 From 5595cffc8248e4672c5803547445e85e4053c8fc Mon Sep 17 00:00:00 2001 From: Pekka Enberg Date: Tue, 5 Aug 2008 09:28:47 +0300 Subject: SLUB: dynamic per-cache MIN_PARTIAL This patch changes the static MIN_PARTIAL to a dynamic per-cache ->min_partial value that is calculated from object size. The bigger the object size, the more pages we keep on the partial list. I tested SLAB, SLUB, and SLUB with this patch on Jens Axboe's 'netio' example script of the fio benchmarking tool. The script stresses the networking subsystem which should also give a fairly good beating of kmalloc() et al. To run the test yourself, first clone the fio repository: git clone git://git.kernel.dk/fio.git and then run the following command n times on your machine: time ./fio examples/netio The results on my 2-way 64-bit x86 machine are as follows: [ the minimum, maximum, and average are captured from 50 individual runs ] real time (seconds) min max avg sd SLAB 22.76 23.38 22.98 0.17 SLUB 22.80 25.78 23.46 0.72 SLUB (dynamic) 22.74 23.54 23.00 0.20 sys time (seconds) min max avg sd SLAB 6.90 8.28 7.70 0.28 SLUB 7.42 16.95 8.89 2.28 SLUB (dynamic) 7.17 8.64 7.73 0.29 user time (seconds) min max avg sd SLAB 36.89 38.11 37.50 0.29 SLUB 30.85 37.99 37.06 1.67 SLUB (dynamic) 36.75 38.07 37.59 0.32 As you can see from the above numbers, this patch brings SLUB to the same level as SLAB for this particular workload fixing a ~2% regression. I'd expect this change to help similar workloads that allocate a lot of objects that are close to the size of a page. Cc: Matthew Wilcox Cc: Andrew Morton Acked-by: Christoph Lameter Signed-off-by: Pekka Enberg --- 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 5bad61a93f65..2f5c16b1aacd 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -46,6 +46,7 @@ struct kmem_cache_cpu { struct kmem_cache_node { spinlock_t list_lock; /* Protect partial list and nr_partial */ unsigned long nr_partial; + unsigned long min_partial; struct list_head partial; #ifdef CONFIG_SLUB_DEBUG atomic_long_t nr_slabs; -- cgit v1.2.3 From 39b986a6c73434d122967dc86efb295ab9a28437 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Tue, 5 Aug 2008 18:16:57 +0200 Subject: ide: sanitize struct ide_port_ops documentation (take 2) v2: Add missing '@'-s. (Noticed by Randy Dunlap) Cc: Randy Dunlap Signed-off-by: Bartlomiej Zolnierkiewicz --- include/linux/ide.h | 27 ++++++++++++++++++--------- 1 file changed, 18 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ide.h b/include/linux/ide.h index b846bc44a27e..b1fb15f10a00 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -509,24 +509,33 @@ struct ide_tp_ops { extern const struct ide_tp_ops default_tp_ops; +/** + * struct ide_port_ops - IDE port operations + * + * @init_dev: host specific initialization of a device + * @set_pio_mode: routine to program host for PIO mode + * @set_dma_mode: routine to program host for DMA mode + * @selectproc: tweaks hardware to select drive + * @reset_poll: chipset polling based on hba specifics + * @pre_reset: chipset specific changes to default for device-hba resets + * @resetproc: routine to reset controller after a disk reset + * @maskproc: special host masking for drive selection + * @quirkproc: check host's drive quirk list + * + * @mdma_filter: filter MDMA modes + * @udma_filter: filter UDMA modes + * + * @cable_detect: detect cable type + */ struct ide_port_ops { - /* host specific initialization of a device */ void (*init_dev)(ide_drive_t *); - /* routine to program host for PIO mode */ void (*set_pio_mode)(ide_drive_t *, const u8); - /* routine to program host for DMA mode */ void (*set_dma_mode)(ide_drive_t *, const u8); - /* tweaks hardware to select drive */ void (*selectproc)(ide_drive_t *); - /* chipset polling based on hba specifics */ int (*reset_poll)(ide_drive_t *); - /* chipset specific changes to default for device-hba resets */ void (*pre_reset)(ide_drive_t *); - /* routine to reset controller after a disk reset */ void (*resetproc)(ide_drive_t *); - /* special host masking for drive selection */ void (*maskproc)(ide_drive_t *, int); - /* check host's drive quirk list */ void (*quirkproc)(ide_drive_t *); u8 (*mdma_filter)(ide_drive_t *); -- cgit v1.2.3 From c5bfc3757f1d843a8e1261840c1f53c5062f8e92 Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Tue, 5 Aug 2008 18:17:01 +0200 Subject: ide: remove CONFIG_IDE_MAX_HWIFS The benefits of a user settable CONFIG_IDE_MAX_HWIFS have become pretty tiny and are no longer considered worth the trouble of an own option. Simply always #define MAX_HWIFS to 10. Signed-off-by: Adrian Bunk Signed-off-by: Bartlomiej Zolnierkiewicz --- include/linux/ide.h | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ide.h b/include/linux/ide.h index b1fb15f10a00..87c12ed96954 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -219,18 +219,7 @@ static inline int __ide_default_irq(unsigned long base) #include #endif -#ifndef MAX_HWIFS -#if defined(CONFIG_BLACKFIN) || defined(CONFIG_H8300) || defined(CONFIG_XTENSA) -# define MAX_HWIFS 1 -#else -# define MAX_HWIFS 10 -#endif -#endif - -#if !defined(MAX_HWIFS) || defined(CONFIG_EMBEDDED) -#undef MAX_HWIFS -#define MAX_HWIFS CONFIG_IDE_MAX_HWIFS -#endif +#define MAX_HWIFS 10 /* Currently only m68k, apus and m8xx need it */ #ifndef IDE_ARCH_ACK_INTR -- cgit v1.2.3 From c6e2bee26eee190b20cd87e71b288bca6a5357a4 Mon Sep 17 00:00:00 2001 From: Bernhard Walle Date: Tue, 5 Aug 2008 13:01:05 -0700 Subject: kdump: report actual value of VMCOREINFO_OSRELEASE in VMCOREINFO The current implementation reports the structure name as VMCOREINFO_OSRELEASE in VMCOREINFO, e.g. VMCOREINFO_OSRELEASE=init_uts_ns.name.release That doesn't make sense because it's always the same. Instead, use the value, e.g. VMCOREINFO_OSRELEASE=2.6.26-rc3 That's also what the 'makedumpfile -g' does. Signed-off-by: Bernhard Walle Cc: "Ken'ichi Ohmichi" Acked-by: Vivek Goyal Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kexec.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kexec.h b/include/linux/kexec.h index 82f88a8a827b..32110cede64f 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -130,8 +130,8 @@ void vmcoreinfo_append_str(const char *fmt, ...) __attribute__ ((format (printf, 1, 2))); unsigned long paddr_vmcoreinfo_note(void); -#define VMCOREINFO_OSRELEASE(name) \ - vmcoreinfo_append_str("OSRELEASE=%s\n", #name) +#define VMCOREINFO_OSRELEASE(value) \ + vmcoreinfo_append_str("OSRELEASE=%s\n", value) #define VMCOREINFO_PAGESIZE(value) \ vmcoreinfo_append_str("PAGESIZE=%ld\n", value) #define VMCOREINFO_SYMBOL(name) \ -- cgit v1.2.3 From 60cadec9da7b6c91aca51f408c828f7e74a68379 Mon Sep 17 00:00:00 2001 From: Shadi Ammouri Date: Tue, 5 Aug 2008 13:01:09 -0700 Subject: spi: new orion_spi driver This adds an SPI driver for the SPI controller found in various Marvell Orion ARM SoCs. It currently supports only one slave, which must use SPI mode 0. [dbrownell@users.sourceforge.net: cleanups, meet specs, pass "sparse"] Signed-off-by: Shadi Ammouri Signed-off-by: Saeed Bishara Signed-off-by: Lennert Buytenhek Signed-off-by: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/spi/orion_spi.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 include/linux/spi/orion_spi.h (limited to 'include/linux') diff --git a/include/linux/spi/orion_spi.h b/include/linux/spi/orion_spi.h new file mode 100644 index 000000000000..b4d9fa6f797c --- /dev/null +++ b/include/linux/spi/orion_spi.h @@ -0,0 +1,17 @@ +/* + * orion_spi.h + * + * 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_SPI_ORION_SPI_H +#define __LINUX_SPI_ORION_SPI_H + +struct orion_spi_info { + u32 tclk; /* no support yet */ +}; + + +#endif -- cgit v1.2.3 From f6ac436dcc4c34709bcde355f3f2254ac0a183d4 Mon Sep 17 00:00:00 2001 From: Mark Asselstine Date: Tue, 5 Aug 2008 13:01:24 -0700 Subject: Remove the deprecated cli() sti() functions These functions have been deprecated for some time now but remained until all legacy callers could be removed. With a few commits in 2.6.26 this has happened so now we can remove these deprecated functions. Signed-off-by: Mark Asselstine Reviewed-by: Matthew Wilcox Cc: Alan Cox Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/interrupt.h | 29 ----------------------------- 1 file changed, 29 deletions(-) (limited to 'include/linux') diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 62aa4f895abe..58ff4e74b2f3 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -223,35 +223,6 @@ static inline int disable_irq_wake(unsigned int irq) #define or_softirq_pending(x) (local_softirq_pending() |= (x)) #endif -/* - * Temporary defines for UP kernels, until all code gets fixed. - */ -#ifndef CONFIG_SMP -static inline void __deprecated cli(void) -{ - local_irq_disable(); -} -static inline void __deprecated sti(void) -{ - local_irq_enable(); -} -static inline void __deprecated save_flags(unsigned long *x) -{ - local_save_flags(*x); -} -#define save_flags(x) save_flags(&x) -static inline void __deprecated restore_flags(unsigned long x) -{ - local_irq_restore(x); -} - -static inline void __deprecated save_and_cli(unsigned long *x) -{ - local_irq_save(*x); -} -#define save_and_cli(x) save_and_cli(&x) -#endif /* CONFIG_SMP */ - /* Some architectures might implement lazy enabling/disabling of * interrupts. In some cases, such as stop_machine, we might want * to ensure that after a local_irq_disable(), interrupts have -- cgit v1.2.3 From bf1db69fbf4ff511e88736ce2e6318846f34492b Mon Sep 17 00:00:00 2001 From: Richard Hughes Date: Tue, 5 Aug 2008 13:01:35 -0700 Subject: pm_qos: spelling fixes A documentation cleanup patch. With a minor tweak to clarify units for kbs. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: mark gross Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pm_qos_params.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/pm_qos_params.h b/include/linux/pm_qos_params.h index 2e4e97bd19f7..d74f75ed1e47 100644 --- a/include/linux/pm_qos_params.h +++ b/include/linux/pm_qos_params.h @@ -1,6 +1,6 @@ /* interface for the pm_qos_power infrastructure of the linux kernel. * - * Mark Gross + * Mark Gross */ #include #include -- cgit v1.2.3 From f780a9f119caa48088b230836a7fa73d1096de7c Mon Sep 17 00:00:00 2001 From: Yevgeny Petrilin Date: Wed, 6 Aug 2008 20:14:06 -0700 Subject: mlx4_core: Add ethernet fields to CQE struct Add ethernet-related fields to struct mlx4_cqe so that the mlx4_en ethernet NIC driver can share the same definition. Signed-off-by: Yevgeny Petrilin Signed-off-by: Roland Dreier --- include/linux/mlx4/cq.h | 36 ++++++++++++++++++++++++------------ 1 file changed, 24 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mlx4/cq.h b/include/linux/mlx4/cq.h index 071cf96cf01f..6f65b2c8bb89 100644 --- a/include/linux/mlx4/cq.h +++ b/include/linux/mlx4/cq.h @@ -39,17 +39,18 @@ #include struct mlx4_cqe { - __be32 my_qpn; + __be32 vlan_my_qpn; __be32 immed_rss_invalid; __be32 g_mlpath_rqpn; - u8 sl; - u8 reserved1; + __be16 sl_vid; __be16 rlid; - __be32 ipoib_status; + __be16 status; + u8 ipv6_ext_mask; + u8 badfcs_enc; __be32 byte_cnt; __be16 wqe_index; __be16 checksum; - u8 reserved2[3]; + u8 reserved[3]; u8 owner_sr_opcode; }; @@ -63,6 +64,11 @@ struct mlx4_err_cqe { u8 owner_sr_opcode; }; +enum { + MLX4_CQE_VLAN_PRESENT_MASK = 1 << 29, + MLX4_CQE_QPN_MASK = 0xffffff, +}; + enum { MLX4_CQE_OWNER_MASK = 0x80, MLX4_CQE_IS_SEND_MASK = 0x40, @@ -86,13 +92,19 @@ enum { }; enum { - MLX4_CQE_IPOIB_STATUS_IPV4 = 1 << 22, - MLX4_CQE_IPOIB_STATUS_IPV4F = 1 << 23, - MLX4_CQE_IPOIB_STATUS_IPV6 = 1 << 24, - MLX4_CQE_IPOIB_STATUS_IPV4OPT = 1 << 25, - MLX4_CQE_IPOIB_STATUS_TCP = 1 << 26, - MLX4_CQE_IPOIB_STATUS_UDP = 1 << 27, - MLX4_CQE_IPOIB_STATUS_IPOK = 1 << 28, + MLX4_CQE_STATUS_IPV4 = 1 << 6, + MLX4_CQE_STATUS_IPV4F = 1 << 7, + MLX4_CQE_STATUS_IPV6 = 1 << 8, + MLX4_CQE_STATUS_IPV4OPT = 1 << 9, + MLX4_CQE_STATUS_TCP = 1 << 10, + MLX4_CQE_STATUS_UDP = 1 << 11, + MLX4_CQE_STATUS_IPOK = 1 << 12, +}; + +enum { + MLX4_CQE_LLC = 1, + MLX4_CQE_SNAP = 1 << 1, + MLX4_CQE_BAD_FCS = 1 << 4, }; static inline void mlx4_cq_arm(struct mlx4_cq *cq, u32 cmd, -- cgit v1.2.3 From b11f8d8cc3bb2fa6fa55286babc1a5ebb2e932c4 Mon Sep 17 00:00:00 2001 From: Brandon Philips Date: Tue, 15 Jul 2008 02:18:41 -0700 Subject: ethtool: Expand ethtool_cmd.speed to 32 bits Introduce the speed_hi field to ethtool_cmd, using the reserved space, to expand the speed field to 2^32 Megabits/second. Making this field expansion now gives us plenty of time to fix up the user-space pieces that use SIOCETHTOOL before hardware faster than 64 Gb/s is available. Signed-off-by: Brandon Philips Signed-off-by: Jeff Garzik --- include/linux/ethtool.h | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 8bb5e87df365..b4b038b89ee6 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -27,9 +27,24 @@ struct ethtool_cmd { __u8 autoneg; /* Enable or disable autonegotiation */ __u32 maxtxpkt; /* Tx pkts before generating tx int */ __u32 maxrxpkt; /* Rx pkts before generating rx int */ - __u32 reserved[4]; + __u16 speed_hi; + __u16 reserved2; + __u32 reserved[3]; }; +static inline void ethtool_cmd_speed_set(struct ethtool_cmd *ep, + __u32 speed) +{ + + ep->speed = (__u16)speed; + ep->speed_hi = (__u16)(speed >> 16); +} + +static inline __u32 ethtool_cmd_speed(struct ethtool_cmd *ep) +{ + return (ep->speed_hi << 16) | ep->speed; +} + #define ETHTOOL_BUSINFO_LEN 32 /* these strings are set to whatever the driver author decides... */ struct ethtool_drvinfo { -- cgit v1.2.3 From fe414248551e2880fe8913577699003ff145ab9d Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 23 Jul 2008 17:41:52 +0200 Subject: dm9000: Support MAC address setting through platform data. The dm9000 driver reads the chip's MAC address from the attached EEPROM. When no EEPROM is present, or when the MAC address is invalid, it falls back to reading the address from the chip. This patch lets platform code set the desired MAC address through platform data. Signed-off-by: Laurent Pinchart Signed-off-by: Jeff Garzik --- include/linux/dm9000.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/dm9000.h b/include/linux/dm9000.h index fc82446b6425..c30879cf93bc 100644 --- a/include/linux/dm9000.h +++ b/include/linux/dm9000.h @@ -27,6 +27,7 @@ struct dm9000_plat_data { unsigned int flags; + unsigned char dev_addr[6]; /* allow replacement IO routines */ -- cgit v1.2.3 From 7d283aee50351ec19eaf654a8690d77c4e1dff50 Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Wed, 6 Aug 2008 15:21:26 -0700 Subject: list.h: Add list_splice_tail() and list_splice_tail_init() If you are using linked lists for queues list_splice() will not do what you would expect even if you use the elements passed reversed. We need to handle these differently. We add list_splice_tail() and list_splice_tail_init(). Signed-off-by: Peter Zijlstra Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- include/linux/list.h | 47 ++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 38 insertions(+), 9 deletions(-) (limited to 'include/linux') diff --git a/include/linux/list.h b/include/linux/list.h index 453916bc0412..a886f27a1181 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -215,21 +215,21 @@ static inline int list_is_singular(const struct list_head *head) } static inline void __list_splice(const struct list_head *list, - struct list_head *head) + struct list_head *prev, + struct list_head *next) { struct list_head *first = list->next; struct list_head *last = list->prev; - struct list_head *at = head->next; - first->prev = head; - head->next = first; + first->prev = prev; + prev->next = first; - last->next = at; - at->prev = last; + last->next = next; + next->prev = last; } /** - * list_splice - join two lists + * list_splice - join two lists, this is designed for stacks * @list: the new list to add. * @head: the place to add it in the first list. */ @@ -237,7 +237,19 @@ static inline void list_splice(const struct list_head *list, struct list_head *head) { if (!list_empty(list)) - __list_splice(list, head); + __list_splice(list, head, head->next); +} + +/** + * list_splice_tail - join two lists, each list being a queue + * @list: the new list to add. + * @head: the place to add it in the first list. + */ +static inline void list_splice_tail(struct list_head *list, + struct list_head *head) +{ + if (!list_empty(list)) + __list_splice(list, head->prev, head); } /** @@ -251,7 +263,24 @@ static inline void list_splice_init(struct list_head *list, struct list_head *head) { if (!list_empty(list)) { - __list_splice(list, head); + __list_splice(list, head, head->next); + INIT_LIST_HEAD(list); + } +} + +/** + * list_splice_tail_init - join two lists, each list being a queue, and + * reinitialise the emptied list. + * @list: the new list to add. + * @head: the place to add it in the first list. + * + * The list at @list is reinitialised + */ +static inline void list_splice_tail_init(struct list_head *list, + struct list_head *head) +{ + if (!list_empty(list)) { + __list_splice(list, head->prev, head); INIT_LIST_HEAD(list); } } -- cgit v1.2.3 From 00e8a4da8cf0d7dba8cc4b0da28ea0f12dcf6b36 Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Wed, 6 Aug 2008 13:28:54 -0700 Subject: list.h: add list_cut_position() This adds list_cut_position() which lets you cut a list into two lists given a pivot in the list. Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- include/linux/list.h | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) (limited to 'include/linux') diff --git a/include/linux/list.h b/include/linux/list.h index a886f27a1181..1d109e2ef0a9 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -214,6 +214,46 @@ static inline int list_is_singular(const struct list_head *head) return !list_empty(head) && (head->next == head->prev); } +static inline void __list_cut_position(struct list_head *list, + struct list_head *head, struct list_head *entry) +{ + struct list_head *new_first = entry->next; + list->next = head->next; + list->next->prev = list; + list->prev = entry; + entry->next = list; + head->next = new_first; + new_first->prev = head; +} + +/** + * list_cut_position - cut a list into two + * @list: a new list to add all removed entries + * @head: a list with entries + * @entry: an entry within head, could be the head itself + * and if so we won't cut the list + * + * This helper moves the initial part of @head, up to and + * including @entry, from @head to @list. You should + * pass on @entry an element you know is on @head. @list + * should be an empty list or a list you do not care about + * losing its data. + * + */ +static inline void list_cut_position(struct list_head *list, + struct list_head *head, struct list_head *entry) +{ + if (list_empty(head)) + return; + if (list_is_singular(head) && + (head->next != entry && head != entry)) + return; + if (entry == head) + INIT_LIST_HEAD(list); + else + __list_cut_position(list, head, entry); +} + static inline void __list_splice(const struct list_head *list, struct list_head *prev, struct list_head *next) -- cgit v1.2.3 From bba81165867313766534dd31603de51bdd36ef9b Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Wed, 30 Jul 2008 12:07:04 -0700 Subject: PCI: make pci_register_driver() a macro alpha: CC [M] drivers/usb/gadget/u_ether.o In file included from include/asm/dma-mapping.h:7, from include/linux/dma-mapping.h:52, from include/linux/dmaengine.h:29, from include/linux/skbuff.h:29, from include/linux/if_ether.h:114, from include/linux/etherdevice.h:27, from drivers/usb/gadget/u_ether.c:29: include/linux/pci.h: In function 'pci_register_driver': include/linux/pci.h:673: error: 'KBUILD_MODNAME' undeclared (first use in this function) include/linux/pci.h:673: error: (Each undeclared identifier is reported only once include/linux/pci.h:673: error: for each function it appears in.) Sam says: The problem is that u_ether.o is used by two modules so when we build it KBUILD_MODNAME is not defined because kbuild does not know what value to use. And in pci.h we have the following inline: static inline int __must_check pci_register_driver(struct pci_driver *driver) { return __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME); } And alpha uses dma-mapping.h to nullify a number of functions that seem to require something from pci.h. Making it a macro fixes this particular problem. However, the underlying issue of a file using KBUILD_MODNAME and being shared between multiple modules is *not* addressed. I guess the answer there is "don't do that". Cc: Sam Ravnborg Cc: Greg KH Signed-off-by: Andrew Morton Signed-off-by: Jesse Barnes --- include/linux/pci.h | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pci.h b/include/linux/pci.h index 825be3878f68..b0269492c34e 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -680,10 +680,12 @@ void pci_enable_bridges(struct pci_bus *bus); /* Proper probing supporting hot-pluggable devices */ int __must_check __pci_register_driver(struct pci_driver *, struct module *, const char *mod_name); -static inline int __must_check pci_register_driver(struct pci_driver *driver) -{ - return __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME); -} + +/* + * pci_register_driver must be a macro so that KBUILD_MODNAME can be expanded + */ +#define pci_register_driver(driver) \ + __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) void pci_unregister_driver(struct pci_driver *dev); void pci_remove_behind_bridge(struct pci_dev *dev); -- cgit v1.2.3 From 7bed523a95425b70af7a59df61d5adb422ef2038 Mon Sep 17 00:00:00 2001 From: "akpm@linux-foundation.org" Date: Tue, 5 Aug 2008 14:07:53 -0700 Subject: PCI: remove duplicate symbol from pci_ids.h pci.ids.h: remove a duplicated symbol Cc: Doug Thompson Signed-off-by: Grant Coady Signed-off-by: Andrew Morton Signed-off-by: Jesse Barnes --- include/linux/pci_ids.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 35a78415accc..9ec2bcce8e83 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2177,8 +2177,6 @@ #define PCI_DEVICE_ID_HERC_WIN 0x5732 #define PCI_DEVICE_ID_HERC_UNI 0x5832 -#define PCI_VENDOR_ID_RDC 0x17f3 - #define PCI_VENDOR_ID_SITECOM 0x182d #define PCI_DEVICE_ID_SITECOM_DC105V2 0x3069 -- cgit v1.2.3 From 5a6c9b60b4cc15b22d3102b0033e5cb842125456 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 8 Aug 2008 00:14:24 +0200 Subject: PCI PM: Export pci_pme_active to drivers Export pci_pme_active() to drivers, so that they can clear the PME_status bit and disable PME# for their devices without involving ACPI. Signed-off-by: Rafael J. Wysocki Signed-off-by: Jesse Barnes --- 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 b0269492c34e..c0e14008a3c2 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -641,6 +641,7 @@ int pci_restore_state(struct pci_dev *dev); int pci_set_power_state(struct pci_dev *dev, pci_power_t state); pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state); bool pci_pme_capable(struct pci_dev *dev, pci_power_t state); +void pci_pme_active(struct pci_dev *dev, bool enable); int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable); pci_power_t pci_target_state(struct pci_dev *dev); int pci_prepare_to_sleep(struct pci_dev *dev); -- cgit v1.2.3 From 5861bbfcc10fc0358abf52c7d22850c8d180f0b0 Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Thu, 7 Aug 2008 16:55:03 -0700 Subject: tracehook: fix CLONE_PTRACE In the change in commit 09a05394fe2448a4139b014936330af23fa7ec83, I overlooked two nits in the logic and this broke using CLONE_PTRACE when PTRACE_O_TRACE* are not being used. A parent that is itself traced at all but not using PTRACE_O_TRACE*, using CLONE_PTRACE would have its new child fail to be traced. A parent that is not itself traced at all that uses CLONE_PTRACE (which should be a no-op in this case) would confuse the bookkeeping and lead to a crash at exit time. This restores the missing checks and fixes both failure modes. Reported-by: Eduardo Habkost Signed-off-by: Roland McGrath --- include/linux/ptrace.h | 2 +- include/linux/tracehook.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index fd31756e1a00..ea7416c901d1 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -172,7 +172,7 @@ static inline void ptrace_init_task(struct task_struct *child, bool ptrace) child->ptrace = 0; if (unlikely(ptrace)) { child->ptrace = current->ptrace; - __ptrace_link(child, current->parent); + ptrace_link(child, current->parent); } } diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h index ab3ef7aefa95..b48d81969574 100644 --- a/include/linux/tracehook.h +++ b/include/linux/tracehook.h @@ -280,7 +280,7 @@ static inline void tracehook_report_clone(int trace, struct pt_regs *regs, unsigned long clone_flags, pid_t pid, struct task_struct *child) { - if (unlikely(trace)) { + if (unlikely(trace) || unlikely(clone_flags & CLONE_PTRACE)) { /* * The child starts up with an immediate SIGSTOP. */ -- cgit v1.2.3 From 2727f226a65e034f93846def7fab314dee430df3 Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 8 Aug 2008 15:13:27 +0100 Subject: [ARM] fix pnx4008 build errors include/linux/i2c-pnx.h was missed when moving the include files. Fix it now; it doesn't really need to include mach/i2c.h at all. Successfully build tested with pnx4008_defconfig, which had failed in linux-next. Signed-off-by: Russell King --- include/linux/i2c-pnx.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/i2c-pnx.h b/include/linux/i2c-pnx.h index e6e9c814da61..f13255e06406 100644 --- a/include/linux/i2c-pnx.h +++ b/include/linux/i2c-pnx.h @@ -12,7 +12,9 @@ #ifndef __I2C_PNX_H__ #define __I2C_PNX_H__ -#include +#include + +struct platform_device; struct i2c_pnx_mif { int ret; /* Return value */ -- cgit v1.2.3 From 6724cce8fb4b408ae1a2fab455050f3407c80144 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Fri, 8 Aug 2008 13:56:20 -0700 Subject: list.h: fix fatal kernel-doc error Fix fatal multi-line kernel-doc error in list.h: function short description must be on one line. Error(linux-2.6.27-rc2-git3//include/linux/list.h:318): duplicate section name 'Description' Signed-off-by: Randy Dunlap Signed-off-by: Linus Torvalds --- include/linux/list.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/list.h b/include/linux/list.h index 1d109e2ef0a9..db35ef02e745 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -309,11 +309,11 @@ static inline void list_splice_init(struct list_head *list, } /** - * list_splice_tail_init - join two lists, each list being a queue, and - * reinitialise the emptied list. + * list_splice_tail_init - join two lists and reinitialise the emptied list * @list: the new list to add. * @head: the place to add it in the first list. * + * Each of the lists is a queue. * The list at @list is reinitialised */ static inline void list_splice_tail_init(struct list_head *list, -- cgit v1.2.3 From d3a2f71853ce543c5515d4982e202751e15b0b6d Mon Sep 17 00:00:00 2001 From: Ian Molton Date: Thu, 31 Jul 2008 20:44:28 +0200 Subject: mfd: TMIO MMC structures and accessors. Signed-off-by: Ian Molton Signed-off-by: Samuel Ortiz --- include/linux/mfd/tmio.h | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h index 9438d8c9ac1c..ec612e66391c 100644 --- a/include/linux/mfd/tmio.h +++ b/include/linux/mfd/tmio.h @@ -1,6 +1,21 @@ #ifndef MFD_TMIO_H #define MFD_TMIO_H +#define tmio_ioread8(addr) readb(addr) +#define tmio_ioread16(addr) readw(addr) +#define tmio_ioread16_rep(r, b, l) readsw(r, b, l) +#define tmio_ioread32(addr) \ + (((u32) readw((addr))) | (((u32) readw((addr) + 2)) << 16)) + +#define tmio_iowrite8(val, addr) writeb((val), (addr)) +#define tmio_iowrite16(val, addr) writew((val), (addr)) +#define tmio_iowrite16_rep(r, b, l) writesw(r, b, l) +#define tmio_iowrite32(val, addr) \ + do { \ + writew((val), (addr)); \ + writew((val) >> 16, (addr) + 2); \ + } while (0) + /* * data for the NAND controller */ @@ -10,8 +25,4 @@ struct tmio_nand_data { unsigned int num_partitions; }; -#define TMIO_NAND_CONFIG "tmio-nand-config" -#define TMIO_NAND_CONTROL "tmio-nand-control" -#define TMIO_NAND_IRQ "tmio-nand" - #endif -- cgit v1.2.3 From 1f192015ca5b2f4d0a79c191f03f64e72fd8fc29 Mon Sep 17 00:00:00 2001 From: Ian Molton Date: Tue, 15 Jul 2008 15:09:43 +0100 Subject: mfd: driver for the T7L66XB TMIO SoC This patchset provides support for the core functinality of the T7L66XB SoC from Toshiba. Supported in this patchset is the IRQ MUX, MMC controller and NAND flash controller. Signed-off-by: Ian Molton Signed-off-by: Samuel Ortiz --- include/linux/mfd/t7l66xb.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 include/linux/mfd/t7l66xb.h (limited to 'include/linux') diff --git a/include/linux/mfd/t7l66xb.h b/include/linux/mfd/t7l66xb.h new file mode 100644 index 000000000000..e83c7f2036f9 --- /dev/null +++ b/include/linux/mfd/t7l66xb.h @@ -0,0 +1,36 @@ +/* + * This file contains the definitions for the T7L66XB + * + * (C) Copyright 2005 Ian Molton + * + * 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 MFD_T7L66XB_H +#define MFD_T7L66XB_H + +#include +#include + +struct t7l66xb_platform_data { + int (*enable_clk32k)(struct platform_device *dev); + void (*disable_clk32k)(struct platform_device *dev); + int (*enable)(struct platform_device *dev); + int (*disable)(struct platform_device *dev); + int (*suspend)(struct platform_device *dev); + int (*resume)(struct platform_device *dev); + + int irq_base; /* The base for subdevice irqs */ + + struct tmio_nand_data *nand_data; +}; + + +#define IRQ_T7L66XB_MMC (1) +#define IRQ_T7L66XB_NAND (3) + +#define T7L66XB_NR_IRQS 8 + +#endif -- cgit v1.2.3 From cbdfb426392557d49b1a0e7cb59b16c20dc42955 Mon Sep 17 00:00:00 2001 From: Ian Molton Date: Tue, 15 Jul 2008 15:12:52 +0100 Subject: mfd: driver for the TC6387XB TMIO controller. This patch adds support for the TC6387XB. Unlike other TMIO devices this one has only one subdevice and no interrupt mux, however using the MFD framework allows it to share the TMIO MMC driver. Signed-off-by: Ian Molton Signed-off-by: Samuel Ortiz --- include/linux/mfd/tc6387xb.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 include/linux/mfd/tc6387xb.h (limited to 'include/linux') diff --git a/include/linux/mfd/tc6387xb.h b/include/linux/mfd/tc6387xb.h new file mode 100644 index 000000000000..fa06e0610b8e --- /dev/null +++ b/include/linux/mfd/tc6387xb.h @@ -0,0 +1,23 @@ +/* + * This file contains the definitions for the TC6387XB + * + * (C) Copyright 2005 Ian Molton + * + * May be copied or modified under the terms of the GNU General Public + * License. See linux/COPYING for more information. + * + */ +#ifndef MFD_TC6387XB_H +#define MFD_TC6387XB_H + +struct tc6387xb_platform_data { + int (*enable_clk32k)(struct platform_device *dev); + void (*disable_clk32k)(struct platform_device *dev); + + int (*enable)(struct platform_device *dev); + int (*disable)(struct platform_device *dev); + int (*suspend)(struct platform_device *dev); + int (*resume)(struct platform_device *dev); +}; + +#endif -- cgit v1.2.3 From 25d6cbd840d958aada29a342c9ee370590ff7b21 Mon Sep 17 00:00:00 2001 From: Ian Molton Date: Sun, 10 Aug 2008 23:32:07 +0200 Subject: mfd: tc6393 cleanup and update This patchset cleans up the TC6393XB support. * Add provision for the MMC subdevice * Disable / enable clocks on suspend / resume * Remove fragments of badly merged code (eg. linux/fb include etc.) * Use a device specific clock name to break dependancy on ARM/PXA2XX * Drop unnecessary resource names * Switch to tmio_io* accessors Signed-off-by: Ian Molton Signed-off-by: Samuel Ortiz --- include/linux/mfd/tc6393xb.h | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/tc6393xb.h b/include/linux/mfd/tc6393xb.h index 7cc824a58f7c..fec7b3f7a81f 100644 --- a/include/linux/mfd/tc6393xb.h +++ b/include/linux/mfd/tc6393xb.h @@ -14,8 +14,8 @@ * published by the Free Software Foundation. */ -#ifndef TC6393XB_H -#define TC6393XB_H +#ifndef MFD_TC6393XB_H +#define MFD_TC6393XB_H /* Also one should provide the CK3P6MI clock */ struct tc6393xb_platform_data { @@ -29,7 +29,7 @@ struct tc6393xb_platform_data { int (*suspend)(struct platform_device *dev); int (*resume)(struct platform_device *dev); - int irq_base; /* a base for cascaded irq */ + int irq_base; /* base for subdevice irqs */ int gpio_base; struct tmio_nand_data *nand_data; @@ -40,9 +40,6 @@ struct tc6393xb_platform_data { */ #define IRQ_TC6393_NAND 0 #define IRQ_TC6393_MMC 1 -#define IRQ_TC6393_OHCI 2 -#define IRQ_TC6393_SERIAL 3 -#define IRQ_TC6393_FB 4 #define TC6393XB_NR_IRQS 8 -- cgit v1.2.3 From c1955a3d4762e7a9bf84035eb3c4886a900f0d15 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 11 Aug 2008 08:59:03 +0200 Subject: sched_clock: delay using sched_clock() Some arch's can't handle sched_clock() being called too early - delay this until sched_clock_init() has been called. Reported-by: Bill Gatliff Signed-off-by: Peter Zijlstra Tested-by: Nishanth Aravamudan CC: Russell King - ARM Linux Signed-off-by: Ingo Molnar --- include/linux/sched.h | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/sched.h b/include/linux/sched.h index ea436bc1a0e2..5850bfb968a8 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1551,16 +1551,10 @@ static inline int set_cpus_allowed(struct task_struct *p, cpumask_t new_mask) extern unsigned long long sched_clock(void); -#ifndef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK -static inline void sched_clock_init(void) -{ -} - -static inline u64 sched_clock_cpu(int cpu) -{ - return sched_clock(); -} +extern void sched_clock_init(void); +extern u64 sched_clock_cpu(int cpu); +#ifndef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK static inline void sched_clock_tick(void) { } @@ -1573,8 +1567,6 @@ static inline void sched_clock_idle_wakeup_event(u64 delta_ns) { } #else -extern void sched_clock_init(void); -extern u64 sched_clock_cpu(int cpu); extern void sched_clock_tick(void); extern void sched_clock_idle_sleep_event(void); extern void sched_clock_idle_wakeup_event(u64 delta_ns); -- cgit v1.2.3 From 64aa348edc617dea17bbd01ddee4e47886d5ec8c Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 11 Aug 2008 09:30:21 +0200 Subject: lockdep: lock_set_subclass - reset a held lock's subclass this can be used to reset a held lock's subclass, for arbitrary-depth iterated data structures such as trees or lists which have per-node locks. Signed-off-by: Peter Zijlstra Signed-off-by: Ingo Molnar --- include/linux/lockdep.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 1bfdc30bb0af..f270ce1582ff 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -300,6 +300,9 @@ extern void lock_acquire(struct lockdep_map *lock, unsigned int subclass, extern void lock_release(struct lockdep_map *lock, int nested, unsigned long ip); +extern void lock_set_subclass(struct lockdep_map *lock, unsigned int subclass, + unsigned long ip); + # define INIT_LOCKDEP .lockdep_recursion = 0, #define lockdep_depth(tsk) (debug_locks ? (tsk)->lockdep_depth : 0) @@ -316,6 +319,7 @@ static inline void lockdep_on(void) # define lock_acquire(l, s, t, r, c, i) do { } while (0) # define lock_release(l, n, i) do { } while (0) +# define lock_set_subclass(l, s, i) do { } while (0) # define lockdep_init() do { } while (0) # define lockdep_info() do { } while (0) # define lockdep_init_map(lock, name, key, sub) do { (void)(key); } while (0) -- cgit v1.2.3 From f82b217e3513fe3af342c0f3ee1494e86250c21c Mon Sep 17 00:00:00 2001 From: Dave Jones Date: Mon, 11 Aug 2008 09:30:23 +0200 Subject: lockdep: shrink held_lock structure struct held_lock { u64 prev_chain_key; /* 0 8 */ struct lock_class * class; /* 8 8 */ long unsigned int acquire_ip; /* 16 8 */ struct lockdep_map * instance; /* 24 8 */ int irq_context; /* 32 4 */ int trylock; /* 36 4 */ int read; /* 40 4 */ int check; /* 44 4 */ int hardirqs_off; /* 48 4 */ /* size: 56, cachelines: 1 */ /* padding: 4 */ /* last cacheline: 56 bytes */ }; struct held_lock { u64 prev_chain_key; /* 0 8 */ long unsigned int acquire_ip; /* 8 8 */ struct lockdep_map * instance; /* 16 8 */ unsigned int class_idx:11; /* 24:21 4 */ unsigned int irq_context:2; /* 24:19 4 */ unsigned int trylock:1; /* 24:18 4 */ unsigned int read:2; /* 24:16 4 */ unsigned int check:2; /* 24:14 4 */ unsigned int hardirqs_off:1; /* 24:13 4 */ /* size: 32, cachelines: 1 */ /* padding: 4 */ /* bit_padding: 13 bits */ /* last cacheline: 32 bytes */ }; [mingo@elte.hu: shrunk hlock->class too] [peterz@infradead.org: fixup bit sizes] Signed-off-by: Dave Jones Signed-off-by: Ingo Molnar Signed-off-by: Peter Zijlstra --- include/linux/lockdep.h | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index f270ce1582ff..b49bfa8e4a5c 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -190,6 +190,9 @@ struct lock_chain { u64 chain_key; }; +#define MAX_LOCKDEP_KEYS_BITS 11 +#define MAX_LOCKDEP_KEYS (1UL << MAX_LOCKDEP_KEYS_BITS) + struct held_lock { /* * One-way hash of the dependency chain up to this point. We @@ -206,14 +209,13 @@ struct held_lock { * with zero), here we store the previous hash value: */ u64 prev_chain_key; - struct lock_class *class; unsigned long acquire_ip; struct lockdep_map *instance; - #ifdef CONFIG_LOCK_STAT u64 waittime_stamp; u64 holdtime_stamp; #endif + unsigned int class_idx:MAX_LOCKDEP_KEYS_BITS; /* * The lock-stack is unified in that the lock chains of interrupt * contexts nest ontop of process context chains, but we 'separate' @@ -227,11 +229,11 @@ struct held_lock { * The following field is used to detect when we cross into an * interrupt context: */ - int irq_context; - int trylock; - int read; - int check; - int hardirqs_off; + unsigned int irq_context:2; /* bit 0 - soft, bit 1 - hard */ + unsigned int trylock:1; + unsigned int read:2; /* see lock_acquire() comment */ + unsigned int check:2; /* see lock_acquire() comment */ + unsigned int hardirqs_off:1; }; /* -- cgit v1.2.3 From 4f3e7524b2e703d9f8b02ac338153a53dd7ede66 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 11 Aug 2008 09:30:23 +0200 Subject: lockdep: map_acquire Most the free-standing lock_acquire() usages look remarkably similar, sweep them into a new helper. Signed-off-by: Peter Zijlstra Signed-off-by: Ingo Molnar --- include/linux/lockdep.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index b49bfa8e4a5c..e431d1d6eaf3 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -459,4 +459,16 @@ static inline void print_irqtrace_events(struct task_struct *curr) # define rwsem_release(l, n, i) do { } while (0) #endif +#ifdef CONFIG_DEBUG_LOCK_ALLOC +# ifdef CONFIG_PROVE_LOCKING +# define map_acquire(l) lock_acquire(l, 0, 0, 0, 2, _THIS_IP_) +# else +# define map_acquire(l) lock_acquire(l, 0, 0, 0, 1, _THIS_IP_) +# endif +# define map_release(l) lock_release(l, 1, _THIS_IP_) +#else +# define map_acquire(l) do { } while (0) +# define map_release(l) do { } while (0) +#endif + #endif /* __LINUX_LOCKDEP_H */ -- cgit v1.2.3 From 7531e2f34d1d551b096143f19111139f0dd84c8b Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 11 Aug 2008 09:30:24 +0200 Subject: lockdep: lock protection locks On Fri, 2008-08-01 at 16:26 -0700, Linus Torvalds wrote: > On Fri, 1 Aug 2008, David Miller wrote: > > > > Taking more than a few locks of the same class at once is bad > > news and it's better to find an alternative method. > > It's not always wrong. > > If you can guarantee that anybody that takes more than one lock of a > particular class will always take a single top-level lock _first_, then > that's all good. You can obviously screw up and take the same lock _twice_ > (which will deadlock), but at least you cannot get into ABBA situations. > > So maybe the right thing to do is to just teach lockdep about "lock > protection locks". That would have solved the multi-queue issues for > networking too - all the actual network drivers would still have taken > just their single queue lock, but the one case that needs to take all of > them would have taken a separate top-level lock first. > > Never mind that the multi-queue locks were always taken in the same order: > it's never wrong to just have some top-level serialization, and anybody > who needs to take locks might as well do , because they sure as > hell aren't going to be on _any_ fastpaths. > > So the simplest solution really sounds like just teaching lockdep about > that one special case. It's not "nesting" exactly, although it's obviously > related to it. Do as Linus suggested. The lock protection lock is called nest_lock. Note that we still have the MAX_LOCK_DEPTH (48) limit to consider, so anything that spills that it still up shit creek. Signed-off-by: Peter Zijlstra Signed-off-by: Ingo Molnar --- include/linux/lockdep.h | 34 ++++++++++++++++++---------------- include/linux/rcuclassic.h | 2 +- 2 files changed, 19 insertions(+), 17 deletions(-) (limited to 'include/linux') diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index e431d1d6eaf3..93a8cc02a033 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -211,6 +211,7 @@ struct held_lock { u64 prev_chain_key; unsigned long acquire_ip; struct lockdep_map *instance; + struct lockdep_map *nest_lock; #ifdef CONFIG_LOCK_STAT u64 waittime_stamp; u64 holdtime_stamp; @@ -297,7 +298,8 @@ extern void lockdep_init_map(struct lockdep_map *lock, const char *name, * 2: full validation */ extern void lock_acquire(struct lockdep_map *lock, unsigned int subclass, - int trylock, int read, int check, unsigned long ip); + int trylock, int read, int check, + struct lockdep_map *nest_lock, unsigned long ip); extern void lock_release(struct lockdep_map *lock, int nested, unsigned long ip); @@ -319,7 +321,7 @@ static inline void lockdep_on(void) { } -# define lock_acquire(l, s, t, r, c, i) do { } while (0) +# define lock_acquire(l, s, t, r, c, n, i) do { } while (0) # define lock_release(l, n, i) do { } while (0) # define lock_set_subclass(l, s, i) do { } while (0) # define lockdep_init() do { } while (0) @@ -407,9 +409,9 @@ static inline void print_irqtrace_events(struct task_struct *curr) #ifdef CONFIG_DEBUG_LOCK_ALLOC # ifdef CONFIG_PROVE_LOCKING -# define spin_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 2, i) +# define spin_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 2, NULL, i) # else -# define spin_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 1, i) +# define spin_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 1, NULL, i) # endif # define spin_release(l, n, i) lock_release(l, n, i) #else @@ -419,11 +421,11 @@ static inline void print_irqtrace_events(struct task_struct *curr) #ifdef CONFIG_DEBUG_LOCK_ALLOC # ifdef CONFIG_PROVE_LOCKING -# define rwlock_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 2, i) -# define rwlock_acquire_read(l, s, t, i) lock_acquire(l, s, t, 2, 2, i) +# define rwlock_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 2, NULL, i) +# define rwlock_acquire_read(l, s, t, i) lock_acquire(l, s, t, 2, 2, NULL, i) # else -# define rwlock_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 1, i) -# define rwlock_acquire_read(l, s, t, i) lock_acquire(l, s, t, 2, 1, i) +# define rwlock_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 1, NULL, i) +# define rwlock_acquire_read(l, s, t, i) lock_acquire(l, s, t, 2, 1, NULL, i) # endif # define rwlock_release(l, n, i) lock_release(l, n, i) #else @@ -434,9 +436,9 @@ static inline void print_irqtrace_events(struct task_struct *curr) #ifdef CONFIG_DEBUG_LOCK_ALLOC # ifdef CONFIG_PROVE_LOCKING -# define mutex_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 2, i) +# define mutex_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 2, NULL, i) # else -# define mutex_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 1, i) +# define mutex_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 1, NULL, i) # endif # define mutex_release(l, n, i) lock_release(l, n, i) #else @@ -446,11 +448,11 @@ 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, i) -# define rwsem_acquire_read(l, s, t, i) lock_acquire(l, s, t, 1, 2, i) +# define rwsem_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 2, NULL, 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, i) -# define rwsem_acquire_read(l, s, t, i) lock_acquire(l, s, t, 1, 1, i) +# define rwsem_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 1, NULL, 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 @@ -461,9 +463,9 @@ static inline void print_irqtrace_events(struct task_struct *curr) #ifdef CONFIG_DEBUG_LOCK_ALLOC # ifdef CONFIG_PROVE_LOCKING -# define map_acquire(l) lock_acquire(l, 0, 0, 0, 2, _THIS_IP_) +# define map_acquire(l) lock_acquire(l, 0, 0, 0, 2, NULL, _THIS_IP_) # else -# define map_acquire(l) lock_acquire(l, 0, 0, 0, 1, _THIS_IP_) +# define map_acquire(l) lock_acquire(l, 0, 0, 0, 1, NULL, _THIS_IP_) # endif # define map_release(l) lock_release(l, 1, _THIS_IP_) #else diff --git a/include/linux/rcuclassic.h b/include/linux/rcuclassic.h index 8c774905dcfe..4ab843622727 100644 --- a/include/linux/rcuclassic.h +++ b/include/linux/rcuclassic.h @@ -117,7 +117,7 @@ extern int rcu_needs_cpu(int cpu); #ifdef CONFIG_DEBUG_LOCK_ALLOC extern struct lockdep_map rcu_lock_map; # define rcu_read_acquire() \ - lock_acquire(&rcu_lock_map, 0, 0, 2, 1, _THIS_IP_) + lock_acquire(&rcu_lock_map, 0, 0, 2, 1, NULL, _THIS_IP_) # define rcu_read_release() lock_release(&rcu_lock_map, 1, _THIS_IP_) #else # define rcu_read_acquire() do { } while (0) -- cgit v1.2.3 From b7d39aff91454f2534db2275f55908656ec0470c Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 11 Aug 2008 09:30:24 +0200 Subject: lockdep: spin_lock_nest_lock() Expose the new lock protection lock. This can be used to annotate places where we take multiple locks of the same class and avoid deadlocks by always taking another (top-level) lock first. NOTE: we're still bound to the MAX_LOCK_DEPTH (48) limit. Signed-off-by: Peter Zijlstra Signed-off-by: Ingo Molnar --- include/linux/lockdep.h | 2 ++ include/linux/spinlock.h | 6 ++++++ include/linux/spinlock_api_smp.h | 2 ++ 3 files changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 93a8cc02a033..4452c04a7f6e 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -410,8 +410,10 @@ static inline void print_irqtrace_events(struct task_struct *curr) #ifdef CONFIG_DEBUG_LOCK_ALLOC # ifdef CONFIG_PROVE_LOCKING # define spin_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 2, NULL, i) +# define spin_acquire_nest(l, s, t, n, i) lock_acquire(l, s, t, 0, 2, n, i) # else # define spin_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 1, NULL, i) +# define spin_acquire_nest(l, s, t, n, i) lock_acquire(l, s, t, 0, 1, NULL, i) # endif # define spin_release(l, n, i) lock_release(l, n, i) #else diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h index 61e5610ad165..e0c0fccced46 100644 --- a/include/linux/spinlock.h +++ b/include/linux/spinlock.h @@ -183,8 +183,14 @@ do { \ #ifdef CONFIG_DEBUG_LOCK_ALLOC # define spin_lock_nested(lock, subclass) _spin_lock_nested(lock, subclass) +# define spin_lock_nest_lock(lock, nest_lock) \ + do { \ + typecheck(struct lockdep_map *, &(nest_lock)->dep_map);\ + _spin_lock_nest_lock(lock, &(nest_lock)->dep_map); \ + } while (0) #else # define spin_lock_nested(lock, subclass) _spin_lock(lock) +# define spin_lock_nest_lock(lock, nest_lock) _spin_lock(lock) #endif #define write_lock(lock) _write_lock(lock) diff --git a/include/linux/spinlock_api_smp.h b/include/linux/spinlock_api_smp.h index 8a2307ce7296..d79845d034b5 100644 --- a/include/linux/spinlock_api_smp.h +++ b/include/linux/spinlock_api_smp.h @@ -22,6 +22,8 @@ int in_lock_functions(unsigned long addr); void __lockfunc _spin_lock(spinlock_t *lock) __acquires(lock); void __lockfunc _spin_lock_nested(spinlock_t *lock, int subclass) __acquires(lock); +void __lockfunc _spin_lock_nest_lock(spinlock_t *lock, struct lockdep_map *map) + __acquires(lock); void __lockfunc _read_lock(rwlock_t *lock) __acquires(lock); void __lockfunc _write_lock(rwlock_t *lock) __acquires(lock); void __lockfunc _spin_lock_bh(spinlock_t *lock) __acquires(lock); -- cgit v1.2.3 From 3295f0ef9ff048a4619ede597ad9ec9cab725654 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Mon, 11 Aug 2008 10:30:30 +0200 Subject: lockdep: rename map_[acquire|release]() => lock_map_[acquire|release]() the names were too generic: drivers/uio/uio.c:87: error: expected identifier or '(' before 'do' drivers/uio/uio.c:87: error: expected identifier or '(' before 'while' drivers/uio/uio.c:113: error: 'map_release' undeclared here (not in a function) Signed-off-by: Ingo Molnar --- include/linux/lockdep.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 4452c04a7f6e..67f42b300c65 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -465,14 +465,14 @@ static inline void print_irqtrace_events(struct task_struct *curr) #ifdef CONFIG_DEBUG_LOCK_ALLOC # ifdef CONFIG_PROVE_LOCKING -# define map_acquire(l) lock_acquire(l, 0, 0, 0, 2, NULL, _THIS_IP_) +# define lock_map_acquire(l) lock_acquire(l, 0, 0, 0, 2, NULL, _THIS_IP_) # else -# define map_acquire(l) lock_acquire(l, 0, 0, 0, 1, NULL, _THIS_IP_) +# define lock_map_acquire(l) lock_acquire(l, 0, 0, 0, 1, NULL, _THIS_IP_) # endif -# define map_release(l) lock_release(l, 1, _THIS_IP_) +# define lock_map_release(l) lock_release(l, 1, _THIS_IP_) #else -# define map_acquire(l) do { } while (0) -# define map_release(l) do { } while (0) +# define lock_map_acquire(l) do { } while (0) +# define lock_map_release(l) do { } while (0) #endif #endif /* __LINUX_LOCKDEP_H */ -- cgit v1.2.3 From b42e737e576339c795d9ac77a1fce6057f6bc0cf Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Mon, 11 Aug 2008 12:34:42 +0200 Subject: lockdep: fix overflow in the hlock shrinkage code There is a overflow by 1 case in the new shrunken hlock code. Signed-off-by: Peter Zijlstra Signed-off-by: Ingo Molnar --- include/linux/lockdep.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 67f42b300c65..c88aa3d8e87f 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -191,7 +191,12 @@ struct lock_chain { }; #define MAX_LOCKDEP_KEYS_BITS 11 -#define MAX_LOCKDEP_KEYS (1UL << MAX_LOCKDEP_KEYS_BITS) +/* + * Subtract one because we offset hlock->class_idx by 1 in order + * to make 0 mean no class. This avoids overflowing the class_idx + * bitfield and hitting the BUG in hlock_class(). + */ +#define MAX_LOCKDEP_KEYS ((1UL << MAX_LOCKDEP_KEYS_BITS) - 1) struct held_lock { /* -- cgit v1.2.3 From 13fa00a8780885edcdf0bc53b81e5d0fec71119a Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Mon, 11 Aug 2008 20:59:59 +1000 Subject: powerpc: Remove include/linux/harrier_defs.h It was only used by code in arch/ppc, and arch/ppc is gone, so remove the unused harrier_defs.h as well. Signed-off-by: Paul Mackerras --- include/linux/harrier_defs.h | 212 ------------------------------------------- 1 file changed, 212 deletions(-) delete mode 100644 include/linux/harrier_defs.h (limited to 'include/linux') diff --git a/include/linux/harrier_defs.h b/include/linux/harrier_defs.h deleted file mode 100644 index efef11db790f..000000000000 --- a/include/linux/harrier_defs.h +++ /dev/null @@ -1,212 +0,0 @@ -/* - * include/linux/harrier_defs.h - * - * Definitions for Motorola MCG Harrier North Bridge & Memory controller - * - * Author: Dale Farnsworth - * dale.farnsworth@mvista.com - * - * Extracted from asm-ppc/harrier.h by: - * Randy Vinson - * rvinson@mvista.com - * - * Copyright 2001-2002 MontaVista Software 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. - */ - -#ifndef __ASMPPC_HARRIER_DEFS_H -#define __ASMPPC_HARRIER_DEFS_H - -#define HARRIER_DEFAULT_XCSR_BASE 0xfeff0000 - -#define HARRIER_VEND_DEV_ID 0x1057480b - -#define HARRIER_VENI_OFF 0x00 - -#define HARRIER_REVI_OFF 0x05 -#define HARRIER_UCTL_OFF 0xd0 -#define HARRIER_XTAL64_MASK 0x02 - -#define HARRIER_MISC_CSR_OFF 0x1c -#define HARRIER_RSTOUT 0x01000000 -#define HARRIER_SYSCON 0x08000000 -#define HARRIER_EREADY 0x10000000 -#define HARRIER_ERDYS 0x20000000 - -/* Function exception registers */ -#define HARRIER_FEEN_OFF 0x40 /* enable */ -#define HARRIER_FEST_OFF 0x44 /* status */ -#define HARRIER_FEMA_OFF 0x48 /* mask */ -#define HARRIER_FECL_OFF 0x4c /* clear */ - -#define HARRIER_FE_DMA 0x80 -#define HARRIER_FE_MIDB 0x40 -#define HARRIER_FE_MIM0 0x20 -#define HARRIER_FE_MIM1 0x10 -#define HARRIER_FE_MIP 0x08 -#define HARRIER_FE_UA0 0x04 -#define HARRIER_FE_UA1 0x02 -#define HARRIER_FE_ABT 0x01 - -#define HARRIER_SERIAL_0_OFF 0xc0 - -#define HARRIER_MBAR_OFF 0xe0 -#define HARRIER_MBAR_MSK 0xfffc0000 -#define HARRIER_MPIC_CSR_OFF 0xe4 -#define HARRIER_MPIC_OPI_ENABLE 0x40 -#define HARRIER_MPIC_IFEVP_OFF 0x10200 -#define HARRIER_MPIC_IFEVP_VECT_MSK 0xff -#define HARRIER_MPIC_IFEDE_OFF 0x10210 - -/* - * Define the Memory Controller register offsets. - */ -#define HARRIER_SDBA_OFF 0x110 -#define HARRIER_SDBB_OFF 0x114 -#define HARRIER_SDBC_OFF 0x118 -#define HARRIER_SDBD_OFF 0x11c -#define HARRIER_SDBE_OFF 0x120 -#define HARRIER_SDBF_OFF 0x124 -#define HARRIER_SDBG_OFF 0x128 -#define HARRIER_SDBH_OFF 0x12c - -#define HARRIER_SDB_ENABLE 0x00000100 -#define HARRIER_SDB_SIZE_MASK 0xf -#define HARRIER_SDB_SIZE_SHIFT 16 -#define HARRIER_SDB_BASE_MASK 0xff -#define HARRIER_SDB_BASE_SHIFT 24 - -/* - * Define outbound register offsets. - */ -#define HARRIER_OTAD0_OFF 0x220 -#define HARRIER_OTOF0_OFF 0x224 -#define HARRIER_OTAD1_OFF 0x228 -#define HARRIER_OTOF1_OFF 0x22c -#define HARRIER_OTAD2_OFF 0x230 -#define HARRIER_OTOF2_OFF 0x234 -#define HARRIER_OTAD3_OFF 0x238 -#define HARRIER_OTOF3_OFF 0x23c - -#define HARRIER_OTADX_START_MSK 0xffff0000UL -#define HARRIER_OTADX_END_MSK 0x0000ffffUL - -#define HARRIER_OTOFX_OFF_MSK 0xffff0000UL -#define HARRIER_OTOFX_ENA 0x80UL -#define HARRIER_OTOFX_WPE 0x10UL -#define HARRIER_OTOFX_SGE 0x08UL -#define HARRIER_OTOFX_RAE 0x04UL -#define HARRIER_OTOFX_MEM 0x02UL -#define HARRIER_OTOFX_IOM 0x01UL - -/* - * Define generic message passing register offsets - */ -/* Mirrored registers (visible from both PowerPC and PCI space) */ -#define HARRIER_XCSR_MP_BASE_OFF 0x290 /* base offset in XCSR space */ -#define HARRIER_PMEP_MP_BASE_OFF 0x100 /* base offset in PMEM space */ -#define HARRIER_MGOM0_OFF 0x00 /* outbound msg 0 */ -#define HARRIER_MGOM1_OFF 0x04 /* outbound msg 1 */ -#define HARRIER_MGOD_OFF 0x08 /* outbound doorbells */ - -#define HARRIER_MGIM0_OFF 0x10 /* inbound msg 0 */ -#define HARRIER_MGIM1_OFF 0x14 /* inbound msg 1 */ -#define HARRIER_MGID_OFF 0x18 /* inbound doorbells */ - -/* PowerPC-only registers */ -#define HARRIER_MGIDM_OFF 0x20 /* inbound doorbell mask */ - -/* PCI-only registers */ -#define HARRIER_PMEP_MGST_OFF 0x20 /* (outbound) interrupt status */ -#define HARRIER_PMEP_MGMS_OFF 0x24 /* (outbound) interrupt mask */ -#define HARRIER_MG_OMI0 (1<<4) -#define HARRIER_MG_OMI1 (1<<5) - -#define HARRIER_PMEP_MGODM_OFF 0x28 /* outbound doorbell mask */ - -/* - * Define PCI configuration space register offsets - */ -#define HARRIER_XCSR_TO_PCFS_OFF 0x300 - -/* - * Define message passing attribute register offset - */ -#define HARRIER_MPAT_OFF 0x44 - -/* - * Define inbound attribute register offsets. - */ -#define HARRIER_ITSZ0_OFF 0x48 -#define HARRIER_ITAT0_OFF 0x4c - -#define HARRIER_ITSZ1_OFF 0x50 -#define HARRIER_ITAT1_OFF 0x54 - -#define HARRIER_ITSZ2_OFF 0x58 -#define HARRIER_ITAT2_OFF 0x5c - -#define HARRIER_ITSZ3_OFF 0x60 -#define HARRIER_ITAT3_OFF 0x64 - -/* inbound translation size constants */ -#define HARRIER_ITSZ_MSK 0xff -#define HARRIER_ITSZ_4KB 0x00 -#define HARRIER_ITSZ_8KB 0x01 -#define HARRIER_ITSZ_16KB 0x02 -#define HARRIER_ITSZ_32KB 0x03 -#define HARRIER_ITSZ_64KB 0x04 -#define HARRIER_ITSZ_128KB 0x05 -#define HARRIER_ITSZ_256KB 0x06 -#define HARRIER_ITSZ_512KB 0x07 -#define HARRIER_ITSZ_1MB 0x08 -#define HARRIER_ITSZ_2MB 0x09 -#define HARRIER_ITSZ_4MB 0x0A -#define HARRIER_ITSZ_8MB 0x0B -#define HARRIER_ITSZ_16MB 0x0C -#define HARRIER_ITSZ_32MB 0x0D -#define HARRIER_ITSZ_64MB 0x0E -#define HARRIER_ITSZ_128MB 0x0F -#define HARRIER_ITSZ_256MB 0x10 -#define HARRIER_ITSZ_512MB 0x11 -#define HARRIER_ITSZ_1GB 0x12 -#define HARRIER_ITSZ_2GB 0x13 - -/* inbound translation offset */ -#define HARRIER_ITOF_SHIFT 0x10 -#define HARRIER_ITOF_MSK 0xffff - -/* inbound translation atttributes */ -#define HARRIER_ITAT_PRE (1<<3) -#define HARRIER_ITAT_RAE (1<<4) -#define HARRIER_ITAT_WPE (1<<5) -#define HARRIER_ITAT_MEM (1<<6) -#define HARRIER_ITAT_ENA (1<<7) -#define HARRIER_ITAT_GBL (1<<16) - -#define HARRIER_LBA_OFF 0x80 -#define HARRIER_LBA_MSK (1<<31) - -#define HARRIER_XCSR_SIZE 1024 - -/* macros to calculate message passing register offsets */ -#define HARRIER_MP_XCSR(x) ((u32)HARRIER_XCSR_MP_BASE_OFF + (u32)x) - -#define HARRIER_MP_PMEP(x) ((u32)HARRIER_PMEP_MP_BASE_OFF + (u32)x) - -/* - * Define PCI configuration space register offsets - */ -#define HARRIER_MPBAR_OFF PCI_BASE_ADDRESS_0 -#define HARRIER_ITBAR0_OFF PCI_BASE_ADDRESS_1 -#define HARRIER_ITBAR1_OFF PCI_BASE_ADDRESS_2 -#define HARRIER_ITBAR2_OFF PCI_BASE_ADDRESS_3 -#define HARRIER_ITBAR3_OFF PCI_BASE_ADDRESS_4 - -#define HARRIER_XCSR_CONFIG(x) ((u32)HARRIER_XCSR_TO_PCFS_OFF + (u32)x) - -#endif /* __ASMPPC_HARRIER_DEFS_H */ -- cgit v1.2.3 From e5f363e358cf16e4ad13a6826e15088c5495efe9 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Mon, 11 Aug 2008 12:37:27 +0200 Subject: lockdep: increase MAX_LOCKDEP_KEYS certain configs produce: [ 70.076229] BUG: MAX_LOCKDEP_KEYS too low! [ 70.080230] turning off the locking correctness validator. tune them up. Signed-off-by: Ingo Molnar --- 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 c88aa3d8e87f..331e5f1c2d8e 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -190,7 +190,7 @@ struct lock_chain { u64 chain_key; }; -#define MAX_LOCKDEP_KEYS_BITS 11 +#define MAX_LOCKDEP_KEYS_BITS 13 /* * Subtract one because we offset hlock->class_idx by 1 in order * to make 0 mean no class. This avoids overflowing the class_idx -- cgit v1.2.3 From a8c84df9f71e4a7b14bdd41687a70d366c087eef Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Thu, 31 Jul 2008 15:48:07 +1000 Subject: intel/agp: rewrite GTT on resume On my Intel chipset (965GM), the GTT is entirely erased across suspend/resume. This patch simply re-plays the current mapping at resume time to restore the table.=20 I noticed this once I started relying on persistent GTT mappings across VT switch in our GEM work -- the old X server and DRM code carefully unbind all memory from the GTT on VT switch, but GEM does not bother. I placed the list management and rewrite code in the generic layer on the assumption that it will be needed on other hardware, but I did not add the rewrite call to anything other than the Intel resume function. Keep a list of current GATT mappings. At resume time, rewrite them into the GATT. This is needed on Intel (at least) as the entire GATT is cleared across suspend/resume. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Keith Packard Cc: Dave Jones Cc: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Dave Airlie --- include/linux/agp_backend.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/agp_backend.h b/include/linux/agp_backend.h index 972b12bcfb36..2b8df8b420fd 100644 --- a/include/linux/agp_backend.h +++ b/include/linux/agp_backend.h @@ -30,6 +30,8 @@ #ifndef _AGP_BACKEND_H #define _AGP_BACKEND_H 1 +#include + enum chipset_type { NOT_SUPPORTED, SUPPORTED, @@ -78,6 +80,8 @@ struct agp_memory { bool is_bound; bool is_flushed; bool vmalloc_flag; + /* list of agp_memory mapped to the aperture */ + struct list_head mapped_list; }; #define AGP_NORMAL_MEMORY 0 @@ -96,6 +100,7 @@ extern struct agp_memory *agp_allocate_memory(struct agp_bridge_data *, size_t, extern int agp_copy_info(struct agp_bridge_data *, struct agp_kern_info *); extern int agp_bind_memory(struct agp_memory *, off_t); extern int agp_unbind_memory(struct agp_memory *); +extern int agp_rebind_memory(void); extern void agp_enable(struct agp_bridge_data *, u32); extern struct agp_bridge_data *agp_backend_acquire(struct pci_dev *); extern void agp_backend_release(struct agp_bridge_data *); -- cgit v1.2.3 From 987c402ac31988f7ecdb38b657bcfeea5831d479 Mon Sep 17 00:00:00 2001 From: Gerrit Renker Date: Mon, 11 Aug 2008 18:17:17 -0700 Subject: skbuff: Code readability NiT Inserting a space between the `-' improved the C readability (some languages allow hyphens within functions and variable names, which is confusing). Signed-off-by: Gerrit Renker Signed-off-by: David S. Miller --- include/linux/skbuff.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index cfcc45b3bef0..358661c9990e 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -901,7 +901,7 @@ extern unsigned char *__pskb_pull_tail(struct sk_buff *skb, int delta); static inline unsigned char *__pskb_pull(struct sk_buff *skb, unsigned int len) { if (len > skb_headlen(skb) && - !__pskb_pull_tail(skb, len-skb_headlen(skb))) + !__pskb_pull_tail(skb, len - skb_headlen(skb))) return NULL; skb->len -= len; return skb->data += len; @@ -918,7 +918,7 @@ static inline int pskb_may_pull(struct sk_buff *skb, unsigned int len) return 1; if (unlikely(len > skb->len)) return 0; - return __pskb_pull_tail(skb, len-skb_headlen(skb)) != NULL; + return __pskb_pull_tail(skb, len - skb_headlen(skb)) != NULL; } /** @@ -1321,7 +1321,7 @@ static inline int skb_padto(struct sk_buff *skb, unsigned int len) unsigned int size = skb->len; if (likely(size >= len)) return 0; - return skb_pad(skb, len-size); + return skb_pad(skb, len - size); } static inline int skb_add_data(struct sk_buff *skb, -- cgit v1.2.3 From 912985dce45ef18fcdd9f5439fef054e0e22302a Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Tue, 12 Aug 2008 17:52:52 -0500 Subject: mm: Make generic weak get_user_pages_fast and EXPORT_GPL it Out of line get_user_pages_fast fallback implementation, make it a weak symbol, get rid of CONFIG_HAVE_GET_USER_PAGES_FAST. Export the symbol to modules so lguest can use it. Signed-off-by: Nick Piggin Signed-off-by: Rusty Russell --- include/linux/mm.h | 20 -------------------- 1 file changed, 20 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index 335288bff1b7..fa651609b65d 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -834,7 +834,6 @@ extern int mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev, unsigned long start, unsigned long end, unsigned long newflags); -#ifdef CONFIG_HAVE_GET_USER_PAGES_FAST /* * get_user_pages_fast provides equivalent functionality to get_user_pages, * operating on current and current->mm (force=0 and doesn't return any vmas). @@ -848,25 +847,6 @@ extern int mprotect_fixup(struct vm_area_struct *vma, int get_user_pages_fast(unsigned long start, int nr_pages, int write, struct page **pages); -#else -/* - * Should probably be moved to asm-generic, and architectures can include it if - * they don't implement their own get_user_pages_fast. - */ -#define get_user_pages_fast(start, nr_pages, write, pages) \ -({ \ - struct mm_struct *mm = current->mm; \ - int ret; \ - \ - down_read(&mm->mmap_sem); \ - ret = get_user_pages(current, mm, start, nr_pages, \ - write, 0, pages, NULL); \ - up_read(&mm->mmap_sem); \ - \ - ret; \ -}) -#endif - /* * A callback you can register to apply pressure to ageable caches. * -- cgit v1.2.3 From 4bceba417a795b78a5146e3f85291cb7bb2402ef Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Fri, 8 Aug 2008 11:15:07 +0200 Subject: export virtio_rng.h Hello Rusty, The entropy device was added after we exported all virtio headers. This patch adds virtio_rng.h to the exportable userspace headers. Signed-off-by: Christian Borntraeger Signed-off-by: Rusty Russell --- include/linux/Kbuild | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/Kbuild b/include/linux/Kbuild index a26f565e8189..327f60658d94 100644 --- a/include/linux/Kbuild +++ b/include/linux/Kbuild @@ -356,6 +356,7 @@ unifdef-y += virtio_balloon.h unifdef-y += virtio_console.h unifdef-y += virtio_pci.h unifdef-y += virtio_ring.h +unifdef-y += virtio_rng.h unifdef-y += vt.h unifdef-y += wait.h unifdef-y += wanrouter.h -- cgit v1.2.3 From 59f9415ffb9759e950d775f4c400f747b332cc02 Mon Sep 17 00:00:00 2001 From: Arjan van de Ven Date: Wed, 30 Jul 2008 12:49:02 -0700 Subject: modules: extend initcall_debug functionality to the module loader The kernel has this really nice facility where if you put "initcall_debug" on the kernel commandline, it'll print which function it's going to execute just before calling an initcall, and then after the call completes it will 1) print if it had an error code 2) checks for a few simple bugs (like leaving irqs off) and 3) print how long the init call took in milliseconds. While trying to optimize the boot speed of my laptop, I have been loving number 3 to figure out what to optimize... ... and then I wished that the same thing was done for module loading. This patch makes the module loader use this exact same functionality; it's a logical extension in my view (since modules are just sort of late binding initcalls anyway) and so far I've found it quite useful in finding where things are too slow in my boot. Signed-off-by: Arjan van de Ven Signed-off-by: Andrew Morton Signed-off-by: Rusty Russell --- include/linux/init.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/init.h b/include/linux/init.h index 11b84e106053..93538b696e3d 100644 --- a/include/linux/init.h +++ b/include/linux/init.h @@ -139,6 +139,7 @@ extern initcall_t __con_initcall_start[], __con_initcall_end[]; extern initcall_t __security_initcall_start[], __security_initcall_end[]; /* Defined in init/main.c */ +extern int do_one_initcall(initcall_t fn); extern char __initdata boot_command_line[]; extern char *saved_command_line; extern unsigned int reset_devices; -- cgit v1.2.3 From 74768ed833344bb0f82b97cee46320a3d7f09ecd Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Tue, 12 Aug 2008 15:08:39 -0700 Subject: page allocator: use no-panic variant of alloc_bootmem() in alloc_large_system_hash() .. since a failed allocation is being (initially) handled gracefully, and panic()-ed upon failure explicitly in the function if retries with smaller sizes failed. Signed-off-by: Jan Beulich Signed-off-by: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/bootmem.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h index 652470b687c9..95837bfb5256 100644 --- a/include/linux/bootmem.h +++ b/include/linux/bootmem.h @@ -97,10 +97,14 @@ extern void *__alloc_bootmem_low_node(pg_data_t *pgdat, #ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE #define alloc_bootmem(x) \ __alloc_bootmem(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) +#define alloc_bootmem_nopanic(x) \ + __alloc_bootmem_nopanic(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS)) #define alloc_bootmem_low(x) \ __alloc_bootmem_low(x, SMP_CACHE_BYTES, 0) #define alloc_bootmem_pages(x) \ __alloc_bootmem(x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS)) +#define alloc_bootmem_pages_nopanic(x) \ + __alloc_bootmem_nopanic(x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS)) #define alloc_bootmem_low_pages(x) \ __alloc_bootmem_low(x, PAGE_SIZE, 0) #define alloc_bootmem_node(pgdat, x) \ -- cgit v1.2.3 From 10546355323e4826d13e62f85ac6198385a817a9 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Tue, 12 Aug 2008 15:08:55 -0700 Subject: matrox maven: convert to a new-style i2c driver The legacy i2c model is going away soon, so switch to the new model. Signed-off-by: Jean Delvare Acked-by: Krzysztof Helt Cc: Petr Vandrovec Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/i2c-id.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/i2c-id.h b/include/linux/i2c-id.h index 4862398e05bf..bf34c5f4c051 100644 --- a/include/linux/i2c-id.h +++ b/include/linux/i2c-id.h @@ -39,7 +39,6 @@ #define I2C_DRIVERID_SAA7111A 8 /* video input processor */ #define I2C_DRIVERID_SAA7185B 13 /* video encoder */ #define I2C_DRIVERID_SAA7110 22 /* video decoder */ -#define I2C_DRIVERID_MGATVO 23 /* Matrox TVOut */ #define I2C_DRIVERID_SAA5249 24 /* SAA5249 and compatibles */ #define I2C_DRIVERID_PCF8583 25 /* real time clock */ #define I2C_DRIVERID_SAB3036 26 /* SAB3036 tuner */ @@ -95,7 +94,6 @@ #define I2C_HW_B_BT848 0x010005 /* BT848 video boards */ #define I2C_HW_B_VIA 0x010007 /* Via vt82c586b */ #define I2C_HW_B_HYDRA 0x010008 /* Apple Hydra Mac I/O */ -#define I2C_HW_B_G400 0x010009 /* Matrox G400 */ #define I2C_HW_B_I810 0x01000a /* Intel I810 */ #define I2C_HW_B_VOO 0x01000b /* 3dfx Voodoo 3 / Banshee */ #define I2C_HW_B_SCX200 0x01000e /* Nat'l Semi SCx200 I2C */ -- cgit v1.2.3 From 070cb06593006e7d565d4763380f3edd8dbdc134 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Tue, 12 Aug 2008 15:08:59 -0700 Subject: move kernel-doc comment for might_sleep directly before its defining block MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Uwe Kleine-König Cc: Ingo Molnar Cc: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kernel.h | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kernel.h b/include/linux/kernel.h index aaa998f65c7a..2651f805ba6d 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -108,6 +108,13 @@ struct completion; struct pt_regs; struct user; +#ifdef CONFIG_PREEMPT_VOLUNTARY +extern int _cond_resched(void); +# define might_resched() _cond_resched() +#else +# define might_resched() do { } while (0) +#endif + /** * might_sleep - annotation for functions that can sleep * @@ -118,13 +125,6 @@ struct user; * be bitten later when the calling function happens to sleep when it is not * supposed to. */ -#ifdef CONFIG_PREEMPT_VOLUNTARY -extern int _cond_resched(void); -# define might_resched() _cond_resched() -#else -# define might_resched() do { } while (0) -#endif - #ifdef CONFIG_DEBUG_SPINLOCK_SLEEP void __might_sleep(char *file, int line); # define might_sleep() \ -- cgit v1.2.3 From 50ac2d694f2dd1658341cf97bcf2ffb836d772cb Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Tue, 12 Aug 2008 15:09:02 -0700 Subject: seq_file: add seq_cpumask(), seq_nodemask() Short enough reads from /proc/irq/*/smp_affinity return -EINVAL for no good reason. This became noticed with NR_CPUS=4096 patches, when length of printed representation of cpumask becase 1152, but cat(1) continued to read with 1024-byte chunks. bitmap_scnprintf() in good faith fills buffer, returns 1023, check returns -EINVAL. Fix it by switching to seq_file, so handler will just fill buffer and doesn't care about offsets, length, filling EOF and all this crap. For that add seq_bitmap(), and wrappers around it -- seq_cpumask() and seq_nodemask(). Signed-off-by: Alexey Dobriyan Reviewed-by: Paul Jackson Cc: Mike Travis Cc: Al Viro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/bitmap.h | 1 + include/linux/seq_file.h | 12 ++++++++++++ 2 files changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h index 1abfe664c444..89781fd48859 100644 --- a/include/linux/bitmap.h +++ b/include/linux/bitmap.h @@ -110,6 +110,7 @@ extern int __bitmap_weight(const unsigned long *bitmap, int bits); extern int bitmap_scnprintf(char *buf, unsigned int len, const unsigned long *src, int nbits); +extern int bitmap_scnprintf_len(unsigned int nr_bits); extern int __bitmap_parse(const char *buf, unsigned int buflen, int is_user, unsigned long *dst, int nbits); extern int bitmap_parse_user(const char __user *ubuf, unsigned int ulen, diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h index a66304a09955..a1783b229ef4 100644 --- a/include/linux/seq_file.h +++ b/include/linux/seq_file.h @@ -4,6 +4,8 @@ #include #include #include +#include +#include struct seq_operations; struct file; @@ -47,6 +49,16 @@ int seq_path(struct seq_file *, struct path *, char *); int seq_dentry(struct seq_file *, struct dentry *, char *); int seq_path_root(struct seq_file *m, struct path *path, struct path *root, char *esc); +int seq_bitmap(struct seq_file *m, unsigned long *bits, unsigned int nr_bits); +static inline int seq_cpumask(struct seq_file *m, cpumask_t *mask) +{ + return seq_bitmap(m, mask->bits, NR_CPUS); +} + +static inline int seq_nodemask(struct seq_file *m, nodemask_t *mask) +{ + return seq_bitmap(m, mask->bits, MAX_NUMNODES); +} int single_open(struct file *, int (*)(struct seq_file *, void *), void *); int single_release(struct inode *, struct file *); -- cgit v1.2.3 From 40c9f22210f2d22f45d4fb430c94f472d19407d6 Mon Sep 17 00:00:00 2001 From: Harvey Harrison Date: Tue, 12 Aug 2008 15:09:04 -0700 Subject: byteorder: add a new include/linux/swab.h to define byteswapping functions Collect the implementations from include/linux/byteorder/swab.h, swabb.h in swab.h The functionality provided covers: u16 swab16(u16 val) - return a byteswapped 16 bit value u32 swab32(u32 val) - return a byteswapped 32 bit value u64 swab64(u64 val) - return a byteswapped 64 bit value u32 swahw32(u32 val) - return a wordswapped 32 bit value u32 swahb32(u32 val) - return a high/low byteswapped 32 bit value Similar to above, but return swapped value from a naturally-aligned pointer u16 swab16p(u16 *p) u32 swab32p(u32 *p) u64 swab64p(u64 *p) u32 swahw32p(u32 *p) u32 swahb32p(u32 *p) Similar to above, but swap the value in-place (in-situ) void swab16s(u16 *p) void swab32s(u32 *p) void swab64s(u64 *p) void swahw32s(u32 *p) void swahb32s(u32 *p) Arches can override any of these with an optimized version by defining an inline in their asm/byteorder.h (example given for swab16()): u16 __arch_swab16() {} #define __arch_swab16 __arch_swab16 Signed-off-by: Harvey Harrison Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/swab.h | 309 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 309 insertions(+) create mode 100644 include/linux/swab.h (limited to 'include/linux') diff --git a/include/linux/swab.h b/include/linux/swab.h new file mode 100644 index 000000000000..270d5c208a89 --- /dev/null +++ b/include/linux/swab.h @@ -0,0 +1,309 @@ +#ifndef _LINUX_SWAB_H +#define _LINUX_SWAB_H + +#include +#include +#include + +/* + * casts are necessary for constants, because we never know how for sure + * how U/UL/ULL map to __u16, __u32, __u64. At least not in a portable way. + */ +#define __const_swab16(x) ((__u16)( \ + (((__u16)(x) & (__u16)0x00ffU) << 8) | \ + (((__u16)(x) & (__u16)0xff00U) >> 8))) + +#define __const_swab32(x) ((__u32)( \ + (((__u32)(x) & (__u32)0x000000ffUL) << 24) | \ + (((__u32)(x) & (__u32)0x0000ff00UL) << 8) | \ + (((__u32)(x) & (__u32)0x00ff0000UL) >> 8) | \ + (((__u32)(x) & (__u32)0xff000000UL) >> 24))) + +#define __const_swab64(x) ((__u64)( \ + (((__u64)(x) & (__u64)0x00000000000000ffULL) << 56) | \ + (((__u64)(x) & (__u64)0x000000000000ff00ULL) << 40) | \ + (((__u64)(x) & (__u64)0x0000000000ff0000ULL) << 24) | \ + (((__u64)(x) & (__u64)0x00000000ff000000ULL) << 8) | \ + (((__u64)(x) & (__u64)0x000000ff00000000ULL) >> 8) | \ + (((__u64)(x) & (__u64)0x0000ff0000000000ULL) >> 24) | \ + (((__u64)(x) & (__u64)0x00ff000000000000ULL) >> 40) | \ + (((__u64)(x) & (__u64)0xff00000000000000ULL) >> 56))) + +#define __const_swahw32(x) ((__u32)( \ + (((__u32)(x) & (__u32)0x0000ffffUL) << 16) | \ + (((__u32)(x) & (__u32)0xffff0000UL) >> 16))) + +#define __const_swahb32(x) ((__u32)( \ + (((__u32)(x) & (__u32)0x00ff00ffUL) << 8) | \ + (((__u32)(x) & (__u32)0xff00ff00UL) >> 8))) + +/* + * Implement the following as inlines, but define the interface using + * macros to allow constant folding when possible: + * ___swab16, ___swab32, ___swab64, ___swahw32, ___swahb32 + */ + +static inline __attribute_const__ __u16 ___swab16(__u16 val) +{ +#ifdef __arch_swab16 + return __arch_swab16(val); +#elif defined(__arch_swab16p) + return __arch_swab16p(&val); +#else + return __const_swab16(val); +#endif +} + +static inline __attribute_const__ __u32 ___swab32(__u32 val) +{ +#ifdef __arch_swab32 + return __arch_swab32(val); +#elif defined(__arch_swab32p) + return __arch_swab32p(&val); +#else + return __const_swab32(val); +#endif +} + +static inline __attribute_const__ __u64 ___swab64(__u64 val) +{ +#ifdef __arch_swab64 + return __arch_swab64(val); +#elif defined(__arch_swab64p) + return __arch_swab64p(&val); +#elif defined(__SWAB_64_THRU_32__) + __u32 h = val >> 32; + __u32 l = val & ((1ULL << 32) - 1); + return (((__u64)___swab32(l)) << 32) | ((__u64)(___swab32(h))); +#else + return __const_swab64(val); +#endif +} + +static inline __attribute_const__ __u32 ___swahw32(__u32 val) +{ +#ifdef __arch_swahw32 + return __arch_swahw32(val); +#elif defined(__arch_swahw32p) + return __arch_swahw32p(&val); +#else + return __const_swahw32(val); +#endif +} + +static inline __attribute_const__ __u32 ___swahb32(__u32 val) +{ +#ifdef __arch_swahb32 + return __arch_swahb32(val); +#elif defined(__arch_swahb32p) + return __arch_swahb32p(&val); +#else + return __const_swahb32(val); +#endif +} + +/** + * __swab16 - return a byteswapped 16-bit value + * @x: value to byteswap + */ +#define __swab16(x) \ + (__builtin_constant_p((__u16)(x)) ? \ + __const_swab16((x)) : \ + ___swab16((x))) + +/** + * __swab32 - return a byteswapped 32-bit value + * @x: value to byteswap + */ +#define __swab32(x) \ + (__builtin_constant_p((__u32)(x)) ? \ + __const_swab32((x)) : \ + ___swab32((x))) + +/** + * __swab64 - return a byteswapped 64-bit value + * @x: value to byteswap + */ +#define __swab64(x) \ + (__builtin_constant_p((__u64)(x)) ? \ + __const_swab64((x)) : \ + ___swab64((x))) + +/** + * __swahw32 - return a word-swapped 32-bit value + * @x: value to wordswap + * + * __swahw32(0x12340000) is 0x00001234 + */ +#define __swahw32(x) \ + (__builtin_constant_p((__u32)(x)) ? \ + __const_swahw32((x)) : \ + ___swahw32((x))) + +/** + * __swahb32 - return a high and low byte-swapped 32-bit value + * @x: value to byteswap + * + * __swahb32(0x12345678) is 0x34127856 + */ +#define __swahb32(x) \ + (__builtin_constant_p((__u32)(x)) ? \ + __const_swahb32((x)) : \ + ___swahb32((x))) + +/** + * __swab16p - return a byteswapped 16-bit value from a pointer + * @p: pointer to a naturally-aligned 16-bit value + */ +static inline __u16 __swab16p(const __u16 *p) +{ +#ifdef __arch_swab16p + return __arch_swab16p(p); +#else + return __swab16(*p); +#endif +} + +/** + * __swab32p - return a byteswapped 32-bit value from a pointer + * @p: pointer to a naturally-aligned 32-bit value + */ +static inline __u32 __swab32p(const __u32 *p) +{ +#ifdef __arch_swab32p + return __arch_swab32p(p); +#else + return __swab32(*p); +#endif +} + +/** + * __swab64p - return a byteswapped 64-bit value from a pointer + * @p: pointer to a naturally-aligned 64-bit value + */ +static inline __u64 __swab64p(const __u64 *p) +{ +#ifdef __arch_swab64p + return __arch_swab64p(p); +#else + return __swab64(*p); +#endif +} + +/** + * __swahw32p - return a wordswapped 32-bit value from a pointer + * @p: pointer to a naturally-aligned 32-bit value + * + * See __swahw32() for details of wordswapping. + */ +static inline __u32 __swahw32p(const __u32 *p) +{ +#ifdef __arch_swahw32p + return __arch_swahw32p(p); +#else + return __swahw32(*p); +#endif +} + +/** + * __swahb32p - return a high and low byteswapped 32-bit value from a pointer + * @p: pointer to a naturally-aligned 32-bit value + * + * See __swahb32() for details of high/low byteswapping. + */ +static inline __u32 __swahb32p(const __u32 *p) +{ +#ifdef __arch_swahb32p + return __arch_swahb32p(p); +#else + return __swahb32(*p); +#endif +} + +/** + * __swab16s - byteswap a 16-bit value in-place + * @p: pointer to a naturally-aligned 16-bit value + */ +static inline void __swab16s(__u16 *p) +{ +#ifdef __arch_swab16s + __arch_swab16s(p); +#else + *p = __swab16p(p); +#endif +} +/** + * __swab32s - byteswap a 32-bit value in-place + * @p: pointer to a naturally-aligned 32-bit value + */ +static inline void __swab32s(__u32 *p) +{ +#ifdef __arch_swab32s + __arch_swab32s(p); +#else + *p = __swab32p(p); +#endif +} + +/** + * __swab64s - byteswap a 64-bit value in-place + * @p: pointer to a naturally-aligned 64-bit value + */ +static inline void __swab64s(__u64 *p) +{ +#ifdef __arch_swab64s + __arch_swab64s(p); +#else + *p = __swab64p(p); +#endif +} + +/** + * __swahw32s - wordswap a 32-bit value in-place + * @p: pointer to a naturally-aligned 32-bit value + * + * See __swahw32() for details of wordswapping + */ +static inline void __swahw32s(__u32 *p) +{ +#ifdef __arch_swahw32s + __arch_swahw32s(p); +#else + *p = __swahw32p(p); +#endif +} + +/** + * __swahb32s - high and low byteswap a 32-bit value in-place + * @p: pointer to a naturally-aligned 32-bit value + * + * See __swahb32() for details of high and low byte swapping + */ +static inline void __swahb32s(__u32 *p) +{ +#ifdef __arch_swahb32s + __arch_swahb32s(p); +#else + *p = __swahb32p(p); +#endif +} + +#ifdef __KERNEL__ +# define swab16 __swab16 +# define swab32 __swab32 +# define swab64 __swab64 +# define swahw32 __swahw32 +# define swahb32 __swahb32 +# define swab16p __swab16p +# define swab32p __swab32p +# define swab64p __swab64p +# define swahw32p __swahw32p +# define swahb32p __swahb32p +# define swab16s __swab16s +# define swab32s __swab32s +# define swab64s __swab64s +# define swahw32s __swahw32s +# define swahb32s __swahb32s +#endif /* __KERNEL__ */ + +#endif /* _LINUX_SWAB_H */ -- cgit v1.2.3 From bc2aa80e18a1b43ea2b8066500006b729c4ba4a7 Mon Sep 17 00:00:00 2001 From: Harvey Harrison Date: Tue, 12 Aug 2008 15:09:05 -0700 Subject: byteorder: add include/linux/byteorder.h to define endian helpers Signed-off-by: Harvey Harrison Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/byteorder.h | 372 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 372 insertions(+) create mode 100644 include/linux/byteorder.h (limited to 'include/linux') diff --git a/include/linux/byteorder.h b/include/linux/byteorder.h new file mode 100644 index 000000000000..29f002d73d98 --- /dev/null +++ b/include/linux/byteorder.h @@ -0,0 +1,372 @@ +#ifndef _LINUX_BYTEORDER_H +#define _LINUX_BYTEORDER_H + +#include +#include + +#if defined(__LITTLE_ENDIAN) && defined(__BIG_ENDIAN) +# error Fix asm/byteorder.h to define one endianness +#endif + +#if !defined(__LITTLE_ENDIAN) && !defined(__BIG_ENDIAN) +# error Fix asm/byteorder.h to define arch endianness +#endif + +#ifdef __LITTLE_ENDIAN +# undef __LITTLE_ENDIAN +# define __LITTLE_ENDIAN 1234 +#endif + +#ifdef __BIG_ENDIAN +# undef __BIG_ENDIAN +# define __BIG_ENDIAN 4321 +#endif + +#if defined(__LITTLE_ENDIAN) && !defined(__LITTLE_ENDIAN_BITFIELD) +# define __LITTLE_ENDIAN_BITFIELD +#endif + +#if defined(__BIG_ENDIAN) && !defined(__BIG_ENDIAN_BITFIELD) +# define __BIG_ENDIAN_BITFIELD +#endif + +#ifdef __LITTLE_ENDIAN +# define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) +# define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) +# define __le64_to_cpu(x) ((__force __u64)(__le64)(x)) +# define __cpu_to_le16(x) ((__force __le16)(__u16)(x)) +# define __cpu_to_le32(x) ((__force __le32)(__u32)(x)) +# define __cpu_to_le64(x) ((__force __le64)(__u64)(x)) + +# define __be16_to_cpu(x) __swab16((__force __u16)(__be16)(x)) +# define __be32_to_cpu(x) __swab32((__force __u32)(__be32)(x)) +# define __be64_to_cpu(x) __swab64((__force __u64)(__be64)(x)) +# define __cpu_to_be16(x) ((__force __be16)__swab16(x)) +# define __cpu_to_be32(x) ((__force __be32)__swab32(x)) +# define __cpu_to_be64(x) ((__force __be64)__swab64(x)) +#endif + +#ifdef __BIG_ENDIAN +# define __be16_to_cpu(x) ((__force __u16)(__be16)(x)) +# define __be32_to_cpu(x) ((__force __u32)(__be32)(x)) +# define __be64_to_cpu(x) ((__force __u64)(__be64)(x)) +# define __cpu_to_be16(x) ((__force __be16)(__u16)(x)) +# define __cpu_to_be32(x) ((__force __be32)(__u32)(x)) +# define __cpu_to_be64(x) ((__force __be64)(__u64)(x)) + +# define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) +# define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) +# define __le64_to_cpu(x) __swab64((__force __u64)(__le64)(x)) +# define __cpu_to_le16(x) ((__force __le16)__swab16(x)) +# define __cpu_to_le32(x) ((__force __le32)__swab32(x)) +# define __cpu_to_le64(x) ((__force __le64)__swab64(x)) +#endif + +/* + * These helpers could be phased out over time as the base version + * handles constant folding. + */ +#define __constant_htonl(x) __cpu_to_be32(x) +#define __constant_ntohl(x) __be32_to_cpu(x) +#define __constant_htons(x) __cpu_to_be16(x) +#define __constant_ntohs(x) __be16_to_cpu(x) + +#define __constant_le16_to_cpu(x) __le16_to_cpu(x) +#define __constant_le32_to_cpu(x) __le32_to_cpu(x) +#define __constant_le64_to_cpu(x) __le64_to_cpu(x) +#define __constant_be16_to_cpu(x) __be16_to_cpu(x) +#define __constant_be32_to_cpu(x) __be32_to_cpu(x) +#define __constant_be64_to_cpu(x) __be64_to_cpu(x) + +#define __constant_cpu_to_le16(x) __cpu_to_le16(x) +#define __constant_cpu_to_le32(x) __cpu_to_le32(x) +#define __constant_cpu_to_le64(x) __cpu_to_le64(x) +#define __constant_cpu_to_be16(x) __cpu_to_be16(x) +#define __constant_cpu_to_be32(x) __cpu_to_be32(x) +#define __constant_cpu_to_be64(x) __cpu_to_be64(x) + +static inline void __le16_to_cpus(__u16 *p) +{ +#ifdef __BIG_ENDIAN + __swab16s(p); +#endif +} + +static inline void __cpu_to_le16s(__u16 *p) +{ +#ifdef __BIG_ENDIAN + __swab16s(p); +#endif +} + +static inline void __le32_to_cpus(__u32 *p) +{ +#ifdef __BIG_ENDIAN + __swab32s(p); +#endif +} + +static inline void __cpu_to_le32s(__u32 *p) +{ +#ifdef __BIG_ENDIAN + __swab32s(p); +#endif +} + +static inline void __le64_to_cpus(__u64 *p) +{ +#ifdef __BIG_ENDIAN + __swab64s(p); +#endif +} + +static inline void __cpu_to_le64s(__u64 *p) +{ +#ifdef __BIG_ENDIAN + __swab64s(p); +#endif +} + +static inline void __be16_to_cpus(__u16 *p) +{ +#ifdef __LITTLE_ENDIAN + __swab16s(p); +#endif +} + +static inline void __cpu_to_be16s(__u16 *p) +{ +#ifdef __LITTLE_ENDIAN + __swab16s(p); +#endif +} + +static inline void __be32_to_cpus(__u32 *p) +{ +#ifdef __LITTLE_ENDIAN + __swab32s(p); +#endif +} + +static inline void __cpu_to_be32s(__u32 *p) +{ +#ifdef __LITTLE_ENDIAN + __swab32s(p); +#endif +} + +static inline void __be64_to_cpus(__u64 *p) +{ +#ifdef __LITTLE_ENDIAN + __swab64s(p); +#endif +} + +static inline void __cpu_to_be64s(__u64 *p) +{ +#ifdef __LITTLE_ENDIAN + __swab64s(p); +#endif +} + +static inline __u16 __le16_to_cpup(const __le16 *p) +{ +#ifdef __LITTLE_ENDIAN + return (__force __u16)*p; +#else + return __swab16p((__force __u16 *)p); +#endif +} + +static inline __u32 __le32_to_cpup(const __le32 *p) +{ +#ifdef __LITTLE_ENDIAN + return (__force __u32)*p; +#else + return __swab32p((__force __u32 *)p); +#endif +} + +static inline __u64 __le64_to_cpup(const __le64 *p) +{ +#ifdef __LITTLE_ENDIAN + return (__force __u64)*p; +#else + return __swab64p((__force __u64 *)p); +#endif +} + +static inline __le16 __cpu_to_le16p(const __u16 *p) +{ +#ifdef __LITTLE_ENDIAN + return (__force __le16)*p; +#else + return (__force __le16)__swab16p(p); +#endif +} + +static inline __le32 __cpu_to_le32p(const __u32 *p) +{ +#ifdef __LITTLE_ENDIAN + return (__force __le32)*p; +#else + return (__force __le32)__swab32p(p); +#endif +} + +static inline __le64 __cpu_to_le64p(const __u64 *p) +{ +#ifdef __LITTLE_ENDIAN + return (__force __le64)*p; +#else + return (__force __le64)__swab64p(p); +#endif +} + +static inline __u16 __be16_to_cpup(const __be16 *p) +{ +#ifdef __BIG_ENDIAN + return (__force __u16)*p; +#else + return __swab16p((__force __u16 *)p); +#endif +} + +static inline __u32 __be32_to_cpup(const __be32 *p) +{ +#ifdef __BIG_ENDIAN + return (__force __u32)*p; +#else + return __swab32p((__force __u32 *)p); +#endif +} + +static inline __u64 __be64_to_cpup(const __be64 *p) +{ +#ifdef __BIG_ENDIAN + return (__force __u64)*p; +#else + return __swab64p((__force __u64 *)p); +#endif +} + +static inline __be16 __cpu_to_be16p(const __u16 *p) +{ +#ifdef __BIG_ENDIAN + return (__force __be16)*p; +#else + return (__force __be16)__swab16p(p); +#endif +} + +static inline __be32 __cpu_to_be32p(const __u32 *p) +{ +#ifdef __BIG_ENDIAN + return (__force __be32)*p; +#else + return (__force __be32)__swab32p(p); +#endif +} + +static inline __be64 __cpu_to_be64p(const __u64 *p) +{ +#ifdef __BIG_ENDIAN + return (__force __be64)*p; +#else + return (__force __be64)__swab64p(p); +#endif +} + +#ifdef __KERNEL__ + +# define le16_to_cpu __le16_to_cpu +# define le32_to_cpu __le32_to_cpu +# define le64_to_cpu __le64_to_cpu +# define be16_to_cpu __be16_to_cpu +# define be32_to_cpu __be32_to_cpu +# define be64_to_cpu __be64_to_cpu +# define cpu_to_le16 __cpu_to_le16 +# define cpu_to_le32 __cpu_to_le32 +# define cpu_to_le64 __cpu_to_le64 +# define cpu_to_be16 __cpu_to_be16 +# define cpu_to_be32 __cpu_to_be32 +# define cpu_to_be64 __cpu_to_be64 + +# define le16_to_cpup __le16_to_cpup +# define le32_to_cpup __le32_to_cpup +# define le64_to_cpup __le64_to_cpup +# define be16_to_cpup __be16_to_cpup +# define be32_to_cpup __be32_to_cpup +# define be64_to_cpup __be64_to_cpup +# define cpu_to_le16p __cpu_to_le16p +# define cpu_to_le32p __cpu_to_le32p +# define cpu_to_le64p __cpu_to_le64p +# define cpu_to_be16p __cpu_to_be16p +# define cpu_to_be32p __cpu_to_be32p +# define cpu_to_be64p __cpu_to_be64p + +# define le16_to_cpus __le16_to_cpus +# define le32_to_cpus __le32_to_cpus +# define le64_to_cpus __le64_to_cpus +# define be16_to_cpus __be16_to_cpus +# define be32_to_cpus __be32_to_cpus +# define be64_to_cpus __be64_to_cpus +# define cpu_to_le16s __cpu_to_le16s +# define cpu_to_le32s __cpu_to_le32s +# define cpu_to_le64s __cpu_to_le64s +# define cpu_to_be16s __cpu_to_be16s +# define cpu_to_be32s __cpu_to_be32s +# define cpu_to_be64s __cpu_to_be64s + +/* + * They have to be macros in order to do the constant folding + * correctly - if the argument passed into a inline function + * it is no longer constant according to gcc.. + */ +# undef ntohl +# undef ntohs +# undef htonl +# undef htons + +# define ___htonl(x) __cpu_to_be32(x) +# define ___htons(x) __cpu_to_be16(x) +# define ___ntohl(x) __be32_to_cpu(x) +# define ___ntohs(x) __be16_to_cpu(x) + +# define htonl(x) ___htonl(x) +# define ntohl(x) ___ntohl(x) +# define htons(x) ___htons(x) +# define ntohs(x) ___ntohs(x) + +static inline void le16_add_cpu(__le16 *var, u16 val) +{ + *var = cpu_to_le16(le16_to_cpup(var) + val); +} + +static inline void le32_add_cpu(__le32 *var, u32 val) +{ + *var = cpu_to_le32(le32_to_cpup(var) + val); +} + +static inline void le64_add_cpu(__le64 *var, u64 val) +{ + *var = cpu_to_le64(le64_to_cpup(var) + val); +} + +static inline void be16_add_cpu(__be16 *var, u16 val) +{ + *var = cpu_to_be16(be16_to_cpup(var) + val); +} + +static inline void be32_add_cpu(__be32 *var, u32 val) +{ + *var = cpu_to_be32(be32_to_cpup(var) + val); +} + +static inline void be64_add_cpu(__be64 *var, u64 val) +{ + *var = cpu_to_be64(be64_to_cpup(var) + val); +} + +#endif /* __KERNEL__ */ +#endif /* _LINUX_BYTEORDER_H */ -- cgit v1.2.3 From 31bad9246b5e17d547430697791acca5e9712333 Mon Sep 17 00:00:00 2001 From: Bernhard Walle Date: Tue, 12 Aug 2008 15:09:14 -0700 Subject: firmware/memmap: cleanup Various cleanup the drivers/firmware/memmap (after review by AKPM): - fix kdoc to conform to the standard - move kdoc from header to implementation files - remove superfluous WARN_ON() after kmalloc() - WARN_ON(x); if (!x) -> if(!WARN_ON(x)) - improve some comments Signed-off-by: Bernhard Walle Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/firmware-map.h | 26 -------------------------- 1 file changed, 26 deletions(-) (limited to 'include/linux') diff --git a/include/linux/firmware-map.h b/include/linux/firmware-map.h index acbdbcc16051..6e199c8dfacc 100644 --- a/include/linux/firmware-map.h +++ b/include/linux/firmware-map.h @@ -24,34 +24,8 @@ */ #ifdef CONFIG_FIRMWARE_MEMMAP -/** - * Adds a firmware mapping entry. This function uses kmalloc() for memory - * allocation. Use firmware_map_add_early() if you want to use the bootmem - * allocator. - * - * That function must be called before late_initcall. - * - * @start: Start of the memory range. - * @end: End of the memory range (inclusive). - * @type: Type of the memory range. - * - * Returns 0 on success, or -ENOMEM if no memory could be allocated. - */ int firmware_map_add(resource_size_t start, resource_size_t end, const char *type); - -/** - * Adds a firmware mapping entry. This function uses the bootmem allocator - * for memory allocation. Use firmware_map_add() if you want to use kmalloc(). - * - * That function must be called before late_initcall. - * - * @start: Start of the memory range. - * @end: End of the memory range (inclusive). - * @type: Type of the memory range. - * - * Returns 0 on success, or -ENOMEM if no memory could be allocated. - */ int firmware_map_add_early(resource_size_t start, resource_size_t end, const char *type); -- cgit v1.2.3 From 39d2f1ab2a36ac527a6c41cfe689f50c239eaca3 Mon Sep 17 00:00:00 2001 From: David Chinner Date: Wed, 13 Aug 2008 16:40:43 +1000 Subject: [XFS] extend completions to provide XFS object flush requirements XFS object flushing doesn't quite match existing completion semantics. It mixed exclusive access with completion. That is, we need to mark an object as being flushed before flushing it to disk, and then block any other attempt to flush it until the completion occurs. We do this but adding an extra count to the completion before we start using them. However, we still need to determine if there is a completion in progress, and allow no-blocking attempts fo completions to decrement the count. To do this we introduce: int try_wait_for_completion(struct completion *x) returns a failure status if done == 0, otherwise decrements done to zero and returns a "started" status. This is provided to allow counted completions to begin safely while holding object locks in inverted order. int completion_done(struct completion *x) returns 1 if there is no waiter, 0 if there is a waiter (i.e. a completion in progress). This replaces the use of semaphores for providing this exclusion and completion mechanism. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31816a Signed-off-by: David Chinner Signed-off-by: Lachlan McIlroy --- include/linux/completion.h | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) (limited to 'include/linux') diff --git a/include/linux/completion.h b/include/linux/completion.h index d2961b66d53d..57faa60de9bd 100644 --- a/include/linux/completion.h +++ b/include/linux/completion.h @@ -55,4 +55,49 @@ extern void complete_all(struct completion *); #define INIT_COMPLETION(x) ((x).done = 0) + +/** + * try_wait_for_completion - try to decrement a completion without blocking + * @x: completion structure + * + * Returns: 0 if a decrement cannot be done without blocking + * 1 if a decrement succeeded. + * + * If a completion is being used as a counting completion, + * attempt to decrement the counter without blocking. This + * enables us to avoid waiting if the resource the completion + * is protecting is not available. + */ +static inline bool try_wait_for_completion(struct completion *x) +{ + int ret = 1; + + spin_lock_irq(&x->wait.lock); + if (!x->done) + ret = 0; + else + x->done--; + spin_unlock_irq(&x->wait.lock); + return ret; +} + +/** + * completion_done - Test to see if a completion has any waiters + * @x: completion structure + * + * Returns: 0 if there are waiters (wait_for_completion() in progress) + * 1 if there are no waiters. + * + */ +static inline bool completion_done(struct completion *x) +{ + int ret = 1; + + spin_lock_irq(&x->wait.lock); + if (!x->done) + ret = 0; + spin_unlock_irq(&x->wait.lock); + return ret; +} + #endif -- cgit v1.2.3 From 9e2b2dc4133f65272a6d3c5dcb2ce63f8a87cae9 Mon Sep 17 00:00:00 2001 From: David Howells Date: Wed, 13 Aug 2008 16:20:04 +0100 Subject: CRED: Introduce credential access wrappers The patches that are intended to introduce copy-on-write credentials for 2.6.28 require abstraction of access to some fields of the task structure, particularly for the case of one task accessing another's credentials where RCU will have to be observed. Introduced here are trivial no-op versions of the desired accessors for current and other tasks so that other subsystems can start to be converted over more easily. Wrappers are introduced into a new header (linux/cred.h) for UID/GID, EUID/EGID, SUID/SGID, FSUID/FSGID, cap_effective and current's subscribed user_struct. These wrappers are macros because the ordering between header files mitigates against making them inline functions. linux/cred.h is #included from linux/sched.h. Further, XFS is modified such that it no longer defines and uses parameterised versions of current_fs[ug]id(), thus getting rid of the namespace collision otherwise incurred. Signed-off-by: David Howells Signed-off-by: James Morris --- include/linux/cred.h | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ include/linux/sched.h | 1 + 2 files changed, 51 insertions(+) create mode 100644 include/linux/cred.h (limited to 'include/linux') diff --git a/include/linux/cred.h b/include/linux/cred.h new file mode 100644 index 000000000000..b69222cc1fd2 --- /dev/null +++ b/include/linux/cred.h @@ -0,0 +1,50 @@ +/* Credentials management + * + * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ + +#ifndef _LINUX_CRED_H +#define _LINUX_CRED_H + +#define get_current_user() (get_uid(current->user)) + +#define task_uid(task) ((task)->uid) +#define task_gid(task) ((task)->gid) +#define task_euid(task) ((task)->euid) +#define task_egid(task) ((task)->egid) + +#define current_uid() (current->uid) +#define current_gid() (current->gid) +#define current_euid() (current->euid) +#define current_egid() (current->egid) +#define current_suid() (current->suid) +#define current_sgid() (current->sgid) +#define current_fsuid() (current->fsuid) +#define current_fsgid() (current->fsgid) +#define current_cap() (current->cap_effective) + +#define current_uid_gid(_uid, _gid) \ +do { \ + *(_uid) = current->uid; \ + *(_gid) = current->gid; \ +} while(0) + +#define current_euid_egid(_uid, _gid) \ +do { \ + *(_uid) = current->euid; \ + *(_gid) = current->egid; \ +} while(0) + +#define current_fsuid_fsgid(_uid, _gid) \ +do { \ + *(_uid) = current->fsuid; \ + *(_gid) = current->fsgid; \ +} while(0) + +#endif /* _LINUX_CRED_H */ diff --git a/include/linux/sched.h b/include/linux/sched.h index 5850bfb968a8..cfb0d87b99fc 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -87,6 +87,7 @@ struct sched_param { #include #include #include +#include #include -- cgit v1.2.3 From f4f4d58734916e816d4b4a7cf61b3fc22ce02683 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Mon, 28 Jul 2008 10:39:28 -0400 Subject: USB: add missing kerneldoc line for "needs_binding" This patch (as1117) adds a kerneldoc line for the "needs_binding" field in struct usb_interface. It was accidentally omitted when the field was added. Signed-off-by: Alan Stern 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 5811c5da69f9..0924cd9c30f6 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -110,6 +110,8 @@ enum usb_interface_condition { * @sysfs_files_created: sysfs attributes exist * @needs_remote_wakeup: flag set when the driver requires remote-wakeup * capability during autosuspend. + * @needs_binding: flag set when the driver should be re-probed or unbound + * following a reset or suspend operation it doesn't support. * @dev: driver model's view of this device * @usb_dev: if an interface is bound to the USB major, this will point * to the sysfs representation for that device. -- cgit v1.2.3 From 0282b7f2a874e72c18fcd5a112ccf67f71ba7f5c Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 29 Jul 2008 12:01:04 -0400 Subject: usb-serial: don't release unregistered minors This patch (as1121) fixes a bug in the USB serial core. When a device is unregistered, the core will give back its minors -- even if the device hasn't been assigned any! The patch reserves the highest minor value (255) to mean that no minor was assigned. It also removes some dead code and does a small style fixup. Signed-off-by: Alan Stern Cc: stable Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/serial.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index 09a3e6a7518f..655341d0f534 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -17,7 +17,8 @@ #include #define SERIAL_TTY_MAJOR 188 /* Nice legal number now */ -#define SERIAL_TTY_MINORS 255 /* loads of devices :) */ +#define SERIAL_TTY_MINORS 254 /* loads of devices :) */ +#define SERIAL_TTY_NO_MINOR 255 /* No minor was assigned */ /* The maximum number of ports one device can grab at once */ #define MAX_NUM_PORTS 8 -- cgit v1.2.3 From 550a7375fe720924241f0eb76e4a5c1a3eb8c32f Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 24 Jul 2008 12:27:36 +0300 Subject: USB: Add MUSB and TUSB support This patch adds support for MUSB and TUSB controllers integrated into omap2430 and davinci. It also adds support for external tusb6010 controller. Cc: David Brownell Cc: Tony Lindgren Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/musb.h | 70 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 include/linux/usb/musb.h (limited to 'include/linux') diff --git a/include/linux/usb/musb.h b/include/linux/usb/musb.h new file mode 100644 index 000000000000..d325a0d5bf4f --- /dev/null +++ b/include/linux/usb/musb.h @@ -0,0 +1,70 @@ +/* + * This is used to for host and peripheral modes of the driver for + * Inventra (Multidrop) Highspeed Dual-Role Controllers: (M)HDRC. + * + * Board initialization should put one of these into dev->platform_data, + * probably on some platform_device named "musb_hdrc". It encapsulates + * key configuration differences between boards. + */ + +/* The USB role is defined by the connector used on the board, so long as + * standards are being followed. (Developer boards sometimes won't.) + */ +enum musb_mode { + MUSB_UNDEFINED = 0, + MUSB_HOST, /* A or Mini-A connector */ + MUSB_PERIPHERAL, /* B or Mini-B connector */ + MUSB_OTG /* Mini-AB connector */ +}; + +struct clk; + +struct musb_hdrc_platform_data { + /* MUSB_HOST, MUSB_PERIPHERAL, or MUSB_OTG */ + u8 mode; + + /* for clk_get() */ + const char *clock; + + /* (HOST or OTG) switch VBUS on/off */ + int (*set_vbus)(struct device *dev, int is_on); + + /* (HOST or OTG) mA/2 power supplied on (default = 8mA) */ + u8 power; + + /* (PERIPHERAL) mA/2 max power consumed (default = 100mA) */ + u8 min_power; + + /* (HOST or OTG) msec/2 after VBUS on till power good */ + u8 potpgt; + + /* TBD: chip defaults should probably go someplace else, + * e.g. number of tx/rx endpoints, etc + */ + unsigned multipoint:1; + + /* Power the device on or off */ + int (*set_power)(int state); + + /* Turn device clock on or off */ + int (*set_clock)(struct clk *clock, int is_on); +}; + + +/* TUSB 6010 support */ + +#define TUSB6010_OSCCLK_60 16667 /* psec/clk @ 60.0 MHz */ +#define TUSB6010_REFCLK_24 41667 /* psec/clk @ 24.0 MHz XI */ +#define TUSB6010_REFCLK_19 52083 /* psec/clk @ 19.2 MHz CLKIN */ + +#ifdef CONFIG_ARCH_OMAP2 + +extern int __init tusb6010_setup_interface( + struct musb_hdrc_platform_data *data, + unsigned ps_refclk, unsigned waitpin, + unsigned async_cs, unsigned sync_cs, + unsigned irq, unsigned dmachan); + +extern int tusb6010_platform_retime(unsigned is_refclk); + +#endif /* OMAP2 */ -- cgit v1.2.3 From ca6d1b1333bc2e61e37982de1f28d8604c232414 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 8 Aug 2008 12:40:54 +0300 Subject: usb: musb: pass configuration specifics via pdata Use platform_data to pass musb configuration-specific details to musb driver. This patch will prevent that other platforms selecting HAVE_CLK and enabling musb won't break tree building. The other parts of it will come when linux-omap merge up more omap2/3 board-files. Signed-off-by: Felipe Balbi Acked-by: Paul Mundt Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/musb.h | 38 +++++++++++++++++++++++++++++++++----- 1 file changed, 33 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/usb/musb.h b/include/linux/usb/musb.h index d325a0d5bf4f..630962c04ca4 100644 --- a/include/linux/usb/musb.h +++ b/include/linux/usb/musb.h @@ -19,6 +19,36 @@ enum musb_mode { struct clk; +struct musb_hdrc_eps_bits { + const char name[16]; + u8 bits; +}; + +struct musb_hdrc_config { + /* MUSB configuration-specific details */ + unsigned multipoint:1; /* multipoint device */ + unsigned dyn_fifo:1; /* supports dynamic fifo sizing */ + unsigned soft_con:1; /* soft connect required */ + unsigned utm_16:1; /* utm data witdh is 16 bits */ + unsigned big_endian:1; /* true if CPU uses big-endian */ + unsigned mult_bulk_tx:1; /* Tx ep required for multbulk pkts */ + unsigned mult_bulk_rx:1; /* Rx ep required for multbulk pkts */ + unsigned high_iso_tx:1; /* Tx ep required for HB iso */ + unsigned high_iso_rx:1; /* Rx ep required for HD iso */ + unsigned dma:1; /* supports DMA */ + unsigned vendor_req:1; /* vendor registers required */ + + u8 num_eps; /* number of endpoints _with_ ep0 */ + u8 dma_channels; /* number of dma channels */ + u8 dyn_fifo_size; /* dynamic size in bytes */ + u8 vendor_ctrl; /* vendor control reg width */ + u8 vendor_stat; /* vendor status reg witdh */ + u8 dma_req_chan; /* bitmask for required dma channels */ + u8 ram_bits; /* ram address size */ + + struct musb_hdrc_eps_bits *eps_bits; +}; + struct musb_hdrc_platform_data { /* MUSB_HOST, MUSB_PERIPHERAL, or MUSB_OTG */ u8 mode; @@ -38,16 +68,14 @@ struct musb_hdrc_platform_data { /* (HOST or OTG) msec/2 after VBUS on till power good */ u8 potpgt; - /* TBD: chip defaults should probably go someplace else, - * e.g. number of tx/rx endpoints, etc - */ - unsigned multipoint:1; - /* Power the device on or off */ int (*set_power)(int state); /* Turn device clock on or off */ int (*set_clock)(struct clk *clock, int is_on); + + /* MUSB configuration-specific details */ + struct musb_hdrc_config *config; }; -- cgit v1.2.3 From 5cd9c58fbe9ec92b45b27e131719af4f2bd9eb40 Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 14 Aug 2008 11:37:28 +0100 Subject: security: Fix setting of PF_SUPERPRIV by __capable() Fix the setting of PF_SUPERPRIV by __capable() as it could corrupt the flags the target process if that is not the current process and it is trying to change its own flags in a different way at the same time. __capable() is using neither atomic ops nor locking to protect t->flags. This patch removes __capable() and introduces has_capability() that doesn't set PF_SUPERPRIV on the process being queried. This patch further splits security_ptrace() in two: (1) security_ptrace_may_access(). This passes judgement on whether one process may access another only (PTRACE_MODE_ATTACH for ptrace() and PTRACE_MODE_READ for /proc), and takes a pointer to the child process. current is the parent. (2) security_ptrace_traceme(). This passes judgement on PTRACE_TRACEME only, and takes only a pointer to the parent process. current is the child. In Smack and commoncap, this uses has_capability() to determine whether the parent will be permitted to use PTRACE_ATTACH if normal checks fail. This does not set PF_SUPERPRIV. Two of the instances of __capable() actually only act on current, and so have been changed to calls to capable(). Of the places that were using __capable(): (1) The OOM killer calls __capable() thrice when weighing the killability of a process. All of these now use has_capability(). (2) cap_ptrace() and smack_ptrace() were using __capable() to check to see whether the parent was allowed to trace any process. As mentioned above, these have been split. For PTRACE_ATTACH and /proc, capable() is now used, and for PTRACE_TRACEME, has_capability() is used. (3) cap_safe_nice() only ever saw current, so now uses capable(). (4) smack_setprocattr() rejected accesses to tasks other than current just after calling __capable(), so the order of these two tests have been switched and capable() is used instead. (5) In smack_file_send_sigiotask(), we need to allow privileged processes to receive SIGIO on files they're manipulating. (6) In smack_task_wait(), we let a process wait for a privileged process, whether or not the process doing the waiting is privileged. I've tested this with the LTP SELinux and syscalls testscripts. Signed-off-by: David Howells Acked-by: Serge Hallyn Acked-by: Casey Schaufler Acked-by: Andrew G. Morgan Acked-by: Al Viro Signed-off-by: James Morris --- include/linux/capability.h | 15 +++++++++++++-- include/linux/security.h | 39 +++++++++++++++++++++++++-------------- 2 files changed, 38 insertions(+), 16 deletions(-) (limited to 'include/linux') diff --git a/include/linux/capability.h b/include/linux/capability.h index 02673846d205..9d1fe30b6f6c 100644 --- a/include/linux/capability.h +++ b/include/linux/capability.h @@ -503,8 +503,19 @@ extern const kernel_cap_t __cap_init_eff_set; kernel_cap_t cap_set_effective(const kernel_cap_t pE_new); -int capable(int cap); -int __capable(struct task_struct *t, int cap); +/** + * has_capability - Determine if a task has a superior capability available + * @t: The task in question + * @cap: The capability to be tested for + * + * Return true if the specified task has the given superior capability + * currently in effect, false if not. + * + * Note that this does not set PF_SUPERPRIV on the task. + */ +#define has_capability(t, cap) (security_capable((t), (cap)) == 0) + +extern int capable(int cap); #endif /* __KERNEL__ */ diff --git a/include/linux/security.h b/include/linux/security.h index fd96e7f8a6f9..2ee5ecfb2393 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -46,8 +46,8 @@ struct audit_krule; */ extern int cap_capable(struct task_struct *tsk, int cap); extern int cap_settime(struct timespec *ts, struct timezone *tz); -extern int cap_ptrace(struct task_struct *parent, struct task_struct *child, - unsigned int mode); +extern int cap_ptrace_may_access(struct task_struct *child, unsigned int mode); +extern int cap_ptrace_traceme(struct task_struct *parent); extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); extern int cap_capset_check(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); extern void cap_capset_set(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); @@ -1157,17 +1157,24 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * @alter contains the flag indicating whether changes are to be made. * Return 0 if permission is granted. * - * @ptrace: - * Check permission before allowing the @parent process to trace the + * @ptrace_may_access: + * Check permission before allowing the current process to trace the * @child process. * Security modules may also want to perform a process tracing check * during an execve in the set_security or apply_creds hooks of * binprm_security_ops if the process is being traced and its security * attributes would be changed by the execve. - * @parent contains the task_struct structure for parent process. - * @child contains the task_struct structure for child process. + * @child contains the task_struct structure for the target process. * @mode contains the PTRACE_MODE flags indicating the form of access. * Return 0 if permission is granted. + * @ptrace_traceme: + * Check that the @parent process has sufficient permission to trace the + * current process before allowing the current process to present itself + * to the @parent process for tracing. + * The parent process will still have to undergo the ptrace_may_access + * checks before it is allowed to trace this one. + * @parent contains the task_struct structure for debugger process. + * Return 0 if permission is granted. * @capget: * Get the @effective, @inheritable, and @permitted capability sets for * the @target process. The hook may also perform permission checking to @@ -1287,8 +1294,8 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) struct security_operations { char name[SECURITY_NAME_MAX + 1]; - int (*ptrace) (struct task_struct *parent, struct task_struct *child, - unsigned int mode); + int (*ptrace_may_access) (struct task_struct *child, unsigned int mode); + int (*ptrace_traceme) (struct task_struct *parent); int (*capget) (struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted); @@ -1560,8 +1567,8 @@ extern struct dentry *securityfs_create_dir(const char *name, struct dentry *par extern void securityfs_remove(struct dentry *dentry); /* Security operations */ -int security_ptrace(struct task_struct *parent, struct task_struct *child, - unsigned int mode); +int security_ptrace_may_access(struct task_struct *child, unsigned int mode); +int security_ptrace_traceme(struct task_struct *parent); int security_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, @@ -1742,11 +1749,15 @@ static inline int security_init(void) return 0; } -static inline int security_ptrace(struct task_struct *parent, - struct task_struct *child, - unsigned int mode) +static inline int security_ptrace_may_access(struct task_struct *child, + unsigned int mode) +{ + return cap_ptrace_may_access(child, mode); +} + +static inline int security_ptrace_traceme(struct task_struct *child) { - return cap_ptrace(parent, child, mode); + return cap_ptrace_traceme(parent); } static inline int security_capget(struct task_struct *target, -- cgit v1.2.3 From ce289e89726948b50a58c9e8f4e81174a8c9c254 Mon Sep 17 00:00:00 2001 From: Marcin Slusarz Date: Fri, 15 Aug 2008 00:40:19 -0700 Subject: suspend: fix section mismatch warning - register_nosave_region WARNING: vmlinux.o(.text+0xe684): Section mismatch in reference from the function register_nosave_region() to the function .init.text:__register_nosave_region() The function register_nosave_region() references the function __init __register_nosave_region(). This is often because register_nosave_region lacks a __init annotation or the annotation of __register_nosave_region is wrong. register_nosave_region calls __init function and is called only from __init functions Signed-off-by: Marcin Slusarz Acked-by: Rafael J. Wysocki Cc: Pavel Machek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/suspend.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/suspend.h b/include/linux/suspend.h index c63435095970..2ce8207686e2 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -217,11 +217,11 @@ struct platform_hibernation_ops { #ifdef CONFIG_HIBERNATION /* kernel/power/snapshot.c */ extern void __register_nosave_region(unsigned long b, unsigned long e, int km); -static inline void register_nosave_region(unsigned long b, unsigned long e) +static inline void __init register_nosave_region(unsigned long b, unsigned long e) { __register_nosave_region(b, e, 0); } -static inline void register_nosave_region_late(unsigned long b, unsigned long e) +static inline void __init register_nosave_region_late(unsigned long b, unsigned long e) { __register_nosave_region(b, e, 1); } -- cgit v1.2.3 From 163f6876f5c3ff8215e900b93779e960a56b3694 Mon Sep 17 00:00:00 2001 From: Huang Ying Date: Fri, 15 Aug 2008 00:40:22 -0700 Subject: kexec jump: rename KEXEC_CONTROL_CODE_SIZE to KEXEC_CONTROL_PAGE_SIZE Rename KEXEC_CONTROL_CODE_SIZE to KEXEC_CONTROL_PAGE_SIZE, because control page is used for not only code on some platform. For example in kexec jump, it is used for data and stack too. [akpm@linux-foundation.org: unbreak powerpc and arm, finish conversion] Signed-off-by: Huang Ying Cc: Pavel Machek Cc: "Rafael J. Wysocki" Cc: "Eric W. Biederman" Cc: Vivek Goyal Cc: Ingo Molnar Cc: Russell King Cc: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kexec.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kexec.h b/include/linux/kexec.h index 32110cede64f..17f76fc05173 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -25,8 +25,8 @@ #error KEXEC_CONTROL_MEMORY_LIMIT not defined #endif -#ifndef KEXEC_CONTROL_CODE_SIZE -#error KEXEC_CONTROL_CODE_SIZE not defined +#ifndef KEXEC_CONTROL_PAGE_SIZE +#error KEXEC_CONTROL_PAGE_SIZE not defined #endif #ifndef KEXEC_ARCH -- cgit v1.2.3 From ca195b7f6da3d5dde0bb85a7c322d7de73352653 Mon Sep 17 00:00:00 2001 From: Huang Ying Date: Fri, 15 Aug 2008 00:40:24 -0700 Subject: kexec jump: remove duplication of kexec_restart_prepare() Call kernel_restart_prepare() in kernel_kexec() instead of duplicating the code. Signed-off-by: Huang Ying Acked-by: Pavel Machek Acked-by: Vivek Goyal Cc: Pavel Machek Cc: "Rafael J. Wysocki" Cc: "Eric W. Biederman" Cc: Vivek Goyal Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/reboot.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/reboot.h b/include/linux/reboot.h index b93b541cf111..988e55fe649b 100644 --- a/include/linux/reboot.h +++ b/include/linux/reboot.h @@ -59,6 +59,7 @@ extern void machine_crash_shutdown(struct pt_regs *); * Architecture independent implemenations of sys_reboot commands. */ +extern void kernel_restart_prepare(char *cmd); extern void kernel_restart(char *cmd); extern void kernel_halt(void); extern void kernel_power_off(void); -- cgit v1.2.3 From 9bdeb7b5d34f197dea7859d24475943395ffea5e Mon Sep 17 00:00:00 2001 From: Huang Ying Date: Fri, 15 Aug 2008 00:40:25 -0700 Subject: kexec jump: __ftrace_enabled_save/restore Add __ftrace_enabled_save/restore, used to disable ftrace for a while. Now, this is used by kexec jump, which need a version without lock, for general situation, a locked version should be used. Signed-off-by: Huang Ying Cc: Pavel Machek Cc: "Rafael J. Wysocki" Cc: "Eric W. Biederman" Cc: Vivek Goyal Cc: Ingo Molnar Cc: Steven Rostedt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/ftrace.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index f368d041e02d..bb384068272e 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -98,6 +98,27 @@ static inline void tracer_disable(void) #endif } +/* Ftrace disable/restore without lock. Some synchronization mechanism + * must be used to prevent ftrace_enabled to be changed between + * disable/restore. */ +static inline int __ftrace_enabled_save(void) +{ +#ifdef CONFIG_FTRACE + int saved_ftrace_enabled = ftrace_enabled; + ftrace_enabled = 0; + return saved_ftrace_enabled; +#else + return 0; +#endif +} + +static inline void __ftrace_enabled_restore(int enabled) +{ +#ifdef CONFIG_FTRACE + ftrace_enabled = enabled; +#endif +} + #ifdef CONFIG_FRAME_POINTER /* TODO: need to fix this for ARM */ # define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0)) -- cgit v1.2.3 From be4de35263f59ca1f4740edfffbfb02cc3f2189e Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Fri, 15 Aug 2008 00:40:44 -0700 Subject: completions: uninline try_wait_for_completion and completion_done m68k fails to build with these functions inlined in completion.h. Move them out of line into sched.c and export them to avoid this problem. Signed-off-by: Dave Chinner Cc: Geert Uytterhoeven Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/completion.h | 46 ++-------------------------------------------- 1 file changed, 2 insertions(+), 44 deletions(-) (limited to 'include/linux') diff --git a/include/linux/completion.h b/include/linux/completion.h index 57faa60de9bd..02ef8835999c 100644 --- a/include/linux/completion.h +++ b/include/linux/completion.h @@ -49,6 +49,8 @@ extern unsigned long wait_for_completion_timeout(struct completion *x, unsigned long timeout); extern unsigned long wait_for_completion_interruptible_timeout( struct completion *x, unsigned long timeout); +extern bool try_wait_for_completion(struct completion *x); +extern bool completion_done(struct completion *x); extern void complete(struct completion *); extern void complete_all(struct completion *); @@ -56,48 +58,4 @@ extern void complete_all(struct completion *); #define INIT_COMPLETION(x) ((x).done = 0) -/** - * try_wait_for_completion - try to decrement a completion without blocking - * @x: completion structure - * - * Returns: 0 if a decrement cannot be done without blocking - * 1 if a decrement succeeded. - * - * If a completion is being used as a counting completion, - * attempt to decrement the counter without blocking. This - * enables us to avoid waiting if the resource the completion - * is protecting is not available. - */ -static inline bool try_wait_for_completion(struct completion *x) -{ - int ret = 1; - - spin_lock_irq(&x->wait.lock); - if (!x->done) - ret = 0; - else - x->done--; - spin_unlock_irq(&x->wait.lock); - return ret; -} - -/** - * completion_done - Test to see if a completion has any waiters - * @x: completion structure - * - * Returns: 0 if there are waiters (wait_for_completion() in progress) - * 1 if there are no waiters. - * - */ -static inline bool completion_done(struct completion *x) -{ - int ret = 1; - - spin_lock_irq(&x->wait.lock); - if (!x->done) - ret = 0; - spin_unlock_irq(&x->wait.lock); - return ret; -} - #endif -- cgit v1.2.3 From 89499759dc0dd300528510f465b0bf532fc79a2a Mon Sep 17 00:00:00 2001 From: Seth Heasley Date: Mon, 11 Aug 2008 17:01:50 -0700 Subject: x86/PCI: irq and pci_ids patch for Intel Ibex Peak PCHs This patch adds the Intel Ibex Peak (PCH) LPC and SMBus Controller DeviceIDs. Signed-off-by: Seth Heasley Signed-off-by: Jesse Barnes --- 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 9ec2bcce8e83..f1624b396754 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2428,6 +2428,9 @@ #define PCI_DEVICE_ID_INTEL_ICH10_3 0x3a1a #define PCI_DEVICE_ID_INTEL_ICH10_4 0x3a30 #define PCI_DEVICE_ID_INTEL_ICH10_5 0x3a60 +#define PCI_DEVICE_ID_INTEL_PCH_0 0x3b10 +#define PCI_DEVICE_ID_INTEL_PCH_1 0x3b11 +#define PCI_DEVICE_ID_INTEL_PCH_2 0x3b30 #define PCI_DEVICE_ID_INTEL_IOAT_SNB 0x402f #define PCI_DEVICE_ID_INTEL_5100_16 0x65f0 #define PCI_DEVICE_ID_INTEL_5100_21 0x65f5 -- cgit v1.2.3 From 8c9a9dd0fa3a269d380eaae2dc1bee39e865fae1 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Fri, 15 Aug 2008 10:39:38 +0100 Subject: tty: remove resize window special case This moves it to being a tty operation. That removes special cases and now also means that resize can be picked up by um and other non vt consoles which may have a resize operation. Signed-off-by: Alan Cox Signed-off-by: Linus Torvalds --- include/linux/tty.h | 2 ++ include/linux/tty_driver.h | 14 ++++++++++++++ include/linux/vt_kern.h | 1 - 3 files changed, 16 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/tty.h b/include/linux/tty.h index e3579cb086e0..0cbec74ec086 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -331,6 +331,8 @@ extern int tty_write_room(struct tty_struct *tty); extern void tty_driver_flush_buffer(struct tty_struct *tty); extern void tty_throttle(struct tty_struct *tty); extern void tty_unthrottle(struct tty_struct *tty); +extern int tty_do_resize(struct tty_struct *tty, struct tty_struct *real_tty, + struct winsize *ws); extern int is_current_pgrp_orphaned(void); extern struct pid *tty_get_pgrp(struct tty_struct *tty); diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h index e1065ac0d922..16d27944c321 100644 --- a/include/linux/tty_driver.h +++ b/include/linux/tty_driver.h @@ -168,6 +168,18 @@ * * Optional: If not provided then the write method is called under * the atomic write lock to keep it serialized with the ldisc. + * + * int (*resize)(struct tty_struct *tty, struct tty_struct *real_tty, + * unsigned int rows, unsigned int cols); + * + * Called when a termios request is issued which changes the + * requested terminal geometry. + * + * Optional: the default action is to update the termios structure + * without error. This is usually the correct behaviour. Drivers should + * not force errors here if they are not resizable objects (eg a serial + * line). See tty_do_resize() if you need to wrap the standard method + * in your own logic - the usual case. */ #include @@ -206,6 +218,8 @@ struct tty_operations { int (*tiocmget)(struct tty_struct *tty, struct file *file); int (*tiocmset)(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); + int (*resize)(struct tty_struct *tty, struct tty_struct *real_tty, + struct winsize *ws); #ifdef CONFIG_CONSOLE_POLL int (*poll_init)(struct tty_driver *driver, int line, char *options); int (*poll_get_char)(struct tty_driver *driver, int line); diff --git a/include/linux/vt_kern.h b/include/linux/vt_kern.h index 1c78d56c57e5..1cbd0a7db4e6 100644 --- a/include/linux/vt_kern.h +++ b/include/linux/vt_kern.h @@ -35,7 +35,6 @@ extern int fg_console, last_console, want_console; int vc_allocate(unsigned int console); int vc_cons_allocated(unsigned int console); int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines); -int vc_lock_resize(struct vc_data *vc, unsigned int cols, unsigned int lines); void vc_deallocate(unsigned int console); void reset_palette(struct vc_data *vc); void do_blank_screen(int entering_gfx); -- cgit v1.2.3 From e3b99556975907530aeb9745e7b3945a0da48f17 Mon Sep 17 00:00:00 2001 From: Mark McLoughlin Date: Fri, 15 Aug 2008 15:09:56 -0700 Subject: tun: TUNGETIFF interface to query name and flags Add a TUNGETIFF interface so that userspace can query a tun/tap descriptor for its name and flags. This is needed because it is common for one app to create a tap interface, exec another app and pass it the file descriptor for the interface. Without TUNGETIFF the spawned app has no way of detecting wheter the interface has e.g. IFF_VNET_HDR set. Signed-off-by: Mark McLoughlin Acked-by: Max Krasnyansky Signed-off-by: David S. Miller --- include/linux/if_tun.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/if_tun.h b/include/linux/if_tun.h index 4c6307ad9fdb..8529f57ba263 100644 --- a/include/linux/if_tun.h +++ b/include/linux/if_tun.h @@ -45,6 +45,7 @@ #define TUNGETFEATURES _IOR('T', 207, unsigned int) #define TUNSETOFFLOAD _IOW('T', 208, unsigned int) #define TUNSETTXFILTER _IOW('T', 209, unsigned int) +#define TUNGETIFF _IOR('T', 210, unsigned int) /* TUNSETIFF ifr flags */ #define IFF_TUN 0x0001 -- cgit v1.2.3 From db543c1f973cd1d557cc32ceee76737c1e4d2898 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Fri, 15 Aug 2008 15:13:53 -0700 Subject: net: skb_copy_datagram_from_iovec() There's an skb_copy_datagram_iovec() to copy out of a paged skb, but nothing the other way around (because we don't do that). We want to allocate big skbs in tun.c, so let's add the function. It's a carbon copy of skb_copy_datagram_iovec() with enough changes to be annoying. Signed-off-by: Rusty Russell 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 358661c9990e..909923717830 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1452,6 +1452,10 @@ extern int skb_copy_datagram_iovec(const struct sk_buff *from, extern int skb_copy_and_csum_datagram_iovec(struct sk_buff *skb, int hlen, struct iovec *iov); +extern int skb_copy_datagram_from_iovec(struct sk_buff *skb, + int offset, + struct iovec *from, + int len); extern void skb_free_datagram(struct sock *sk, struct sk_buff *skb); extern int skb_kill_datagram(struct sock *sk, struct sk_buff *skb, unsigned int flags); -- cgit v1.2.3 From 605d9288b3e8a3d15e6f36185c2fc737b6979572 Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Sat, 16 Aug 2008 11:07:21 +0100 Subject: mm: VM_flags comment fixes Try to comment away a little of the confusion between mm's vm_area_struct vm_flags and vmalloc's vm_struct flags: based on an idea by Ulrich Drepper. Signed-off-by: Hugh Dickins Signed-off-by: Linus Torvalds --- include/linux/mm.h | 2 +- include/linux/mm_types.h | 2 +- include/linux/vmalloc.h | 4 ++-- 3 files changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index fa651609b65d..72a15dc26bbf 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -73,7 +73,7 @@ extern unsigned int kobjsize(const void *objp); #endif /* - * vm_flags.. + * vm_flags in vm_area_struct, see mm_types.h. */ #define VM_READ 0x00000001 /* currently active flags */ #define VM_WRITE 0x00000002 diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 386edbe2cb4e..bf334138c7c1 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -113,7 +113,7 @@ struct vm_area_struct { struct vm_area_struct *vm_next; pgprot_t vm_page_prot; /* Access permissions of this VMA. */ - unsigned long vm_flags; /* Flags, listed below. */ + unsigned long vm_flags; /* Flags, see mm.h. */ struct rb_node vm_rb; diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h index 364789aae9f3..328eb4022727 100644 --- a/include/linux/vmalloc.h +++ b/include/linux/vmalloc.h @@ -4,9 +4,9 @@ #include #include /* pgprot_t */ -struct vm_area_struct; +struct vm_area_struct; /* vma defining user mapping in mm_types.h */ -/* bits in vm_struct->flags */ +/* bits in flags of vmalloc's vm_struct below */ #define VM_IOREMAP 0x00000001 /* ioremap() and friends */ #define VM_ALLOC 0x00000002 /* vmalloc() */ #define VM_MAP 0x00000004 /* vmap()ed pages */ -- cgit v1.2.3 From 5e6b83ed8c00f2e2ae5b2413c5907bed735b600d Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Sat, 16 Aug 2008 11:55:04 +0100 Subject: Fix header export of videodev2.h, ivtv.h, ivtvfb.h The exported copy of videodev2.h contains this line: #define #include This is because for some reason it defines __user for itself -- despite the fact that we remove all instances of __user when exporting headers. _All_ pointers in userspace are user pointers. Fix it by removing the unnecessary '#define __user' from the file. The new headers ivtv.h and ivtvfb.h would have the same problem... if whoever put them there had actually remembered to add them to the Kbuild file while he was at it. Fix those too, and export them as was presumably intended. Note that includes of are also stripped by the header export process, so those don't need to be conditional. Signed-off-by: David Woodhouse Signed-off-by: Mauro Carvalho Chehab Acked-by: Hans Verkuil Signed-off-by: Linus Torvalds --- include/linux/Kbuild | 2 ++ include/linux/ivtv.h | 6 +----- include/linux/ivtvfb.h | 6 +----- include/linux/videodev2.h | 4 ++-- 4 files changed, 6 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/Kbuild b/include/linux/Kbuild index 327f60658d94..7d970678f940 100644 --- a/include/linux/Kbuild +++ b/include/linux/Kbuild @@ -250,6 +250,8 @@ unifdef-y += isdn.h unifdef-y += isdnif.h unifdef-y += isdn_divertif.h unifdef-y += isdn_ppp.h +unifdef-y += ivtv.h +unifdef-y += ivtvfb.h unifdef-y += joystick.h unifdef-y += kdev_t.h unifdef-y += kd.h diff --git a/include/linux/ivtv.h b/include/linux/ivtv.h index 794b8daa9378..17ca64b5a66c 100644 --- a/include/linux/ivtv.h +++ b/include/linux/ivtv.h @@ -21,11 +21,7 @@ #ifndef __LINUX_IVTV_H__ #define __LINUX_IVTV_H__ -#ifdef __KERNEL__ -#include /* need __user */ -#else -#define __user -#endif +#include #include /* ivtv knows several distinct output modes: MPEG streaming, diff --git a/include/linux/ivtvfb.h b/include/linux/ivtvfb.h index e980ba62ddcc..e20af47b59ad 100644 --- a/include/linux/ivtvfb.h +++ b/include/linux/ivtvfb.h @@ -21,11 +21,7 @@ #ifndef __LINUX_IVTVFB_H__ #define __LINUX_IVTVFB_H__ -#ifdef __KERNEL__ -#include /* need __user */ -#else -#define __user -#endif +#include #include /* Framebuffer external API */ diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index e466bd54a50e..e65a6bed4e3e 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -55,13 +55,13 @@ */ #ifndef __LINUX_VIDEODEV2_H #define __LINUX_VIDEODEV2_H + #ifdef __KERNEL__ #include /* need struct timeval */ -#include /* need __user */ #else -#define __user #include #endif +#include #include #include -- cgit v1.2.3 From 5e186b57e7ede86aeb9db30e66315bde4e8b1815 Mon Sep 17 00:00:00 2001 From: Alexander Beregalov Date: Sun, 17 Aug 2008 05:34:20 +0400 Subject: security.h: fix build failure security.h: fix build failure include/linux/security.h: In function 'security_ptrace_traceme': include/linux/security.h:1760: error: 'parent' undeclared (first use in this function) Signed-off-by: Alexander Beregalov Tested-by: Ingo Molnar Signed-off-by: James Morris --- include/linux/security.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/security.h b/include/linux/security.h index 2ee5ecfb2393..80c4d002864c 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -1755,7 +1755,7 @@ static inline int security_ptrace_may_access(struct task_struct *child, return cap_ptrace_may_access(child, mode); } -static inline int security_ptrace_traceme(struct task_struct *child) +static inline int security_ptrace_traceme(struct task_struct *parent) { return cap_ptrace_traceme(parent); } -- cgit v1.2.3 From 37014c64079748c47fd109ef2d91ecd785a8c764 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Mon, 18 Aug 2008 21:40:05 +0200 Subject: ata: add missing ATA_ID_* defines (take 2) Add missing ATA_ID_* defines and update {ata,atapi}_*() inlines accordingly. The currently unused defines are needed for the forthcoming drivers/ide/ changes. v2: Add ATA_ID_SPG. Acked-by: Jeff Garzik Signed-off-by: Bartlomiej Zolnierkiewicz --- include/linux/ata.h | 122 ++++++++++++++++++++++++++++++++-------------------- 1 file changed, 76 insertions(+), 46 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ata.h b/include/linux/ata.h index 1c622e2b0504..03fff6239b3c 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -46,18 +46,48 @@ enum { ATA_MAX_SECTORS_TAPE = 65535, ATA_ID_WORDS = 256, + ATA_ID_CONFIG = 0, + ATA_ID_CYLS = 1, + ATA_ID_HEADS = 3, + ATA_ID_SECTORS = 6, ATA_ID_SERNO = 10, + ATA_ID_BUF_SIZE = 21, ATA_ID_FW_REV = 23, ATA_ID_PROD = 27, + ATA_ID_MAX_MULTSECT = 47, + ATA_ID_DWORD_IO = 48, + ATA_ID_CAPABILITY = 49, ATA_ID_OLD_PIO_MODES = 51, + ATA_ID_OLD_DMA_MODES = 52, ATA_ID_FIELD_VALID = 53, + ATA_ID_CUR_CYLS = 54, + ATA_ID_CUR_HEADS = 55, + ATA_ID_CUR_SECTORS = 56, + ATA_ID_MULTSECT = 59, + ATA_ID_LBA_CAPACITY = 60, + ATA_ID_SWDMA_MODES = 62, ATA_ID_MWDMA_MODES = 63, ATA_ID_PIO_MODES = 64, ATA_ID_EIDE_DMA_MIN = 65, + ATA_ID_EIDE_DMA_TIME = 66, ATA_ID_EIDE_PIO = 67, ATA_ID_EIDE_PIO_IORDY = 68, - ATA_ID_UDMA_MODES = 88, + ATA_ID_QUEUE_DEPTH = 75, ATA_ID_MAJOR_VER = 80, + ATA_ID_COMMAND_SET_1 = 82, + ATA_ID_COMMAND_SET_2 = 83, + ATA_ID_CFSSE = 84, + ATA_ID_CFS_ENABLE_1 = 85, + ATA_ID_CFS_ENABLE_2 = 86, + ATA_ID_CSF_DEFAULT = 87, + ATA_ID_UDMA_MODES = 88, + ATA_ID_HW_CONFIG = 93, + ATA_ID_SPG = 98, + ATA_ID_LBA_CAPACITY_2 = 100, + ATA_ID_LAST_LUN = 126, + ATA_ID_DLF = 128, + ATA_ID_CSFO = 129, + ATA_ID_CFA_POWER = 160, ATA_ID_PIO4 = (1 << 1), ATA_ID_SERNO_LEN = 20, @@ -438,17 +468,17 @@ static inline int ata_is_data(u8 prot) /* * id tests */ -#define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0) -#define ata_id_has_lba(id) ((id)[49] & (1 << 9)) -#define ata_id_has_dma(id) ((id)[49] & (1 << 8)) +#define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0) +#define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9)) +#define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8)) #define ata_id_has_ncq(id) ((id)[76] & (1 << 8)) -#define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1) -#define ata_id_removeable(id) ((id)[0] & (1 << 7)) +#define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1) +#define ata_id_removeable(id) ((id)[ATA_ID_CONFIG] & (1 << 7)) #define ata_id_has_atapi_AN(id) \ ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \ ((id)[78] & (1 << 5)) ) -#define ata_id_iordy_disable(id) ((id)[49] & (1 << 10)) -#define ata_id_has_iordy(id) ((id)[49] & (1 << 11)) +#define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10)) +#define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11)) #define ata_id_u32(id,n) \ (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)])) #define ata_id_u64(id,n) \ @@ -457,7 +487,7 @@ static inline int ata_is_data(u8 prot) ((u64) (id)[(n) + 1] << 16) | \ ((u64) (id)[(n) + 0]) ) -#define ata_id_cdb_intr(id) (((id)[0] & 0x60) == 0x20) +#define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20) static inline bool ata_id_has_hipm(const u16 *id) { @@ -482,75 +512,75 @@ static inline bool ata_id_has_dipm(const u16 *id) static inline int ata_id_has_fua(const u16 *id) { - if ((id[84] & 0xC000) != 0x4000) + if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000) return 0; - return id[84] & (1 << 6); + return id[ATA_ID_CFSSE] & (1 << 6); } static inline int ata_id_has_flush(const u16 *id) { - if ((id[83] & 0xC000) != 0x4000) + if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) return 0; - return id[83] & (1 << 12); + return id[ATA_ID_COMMAND_SET_2] & (1 << 12); } static inline int ata_id_has_flush_ext(const u16 *id) { - if ((id[83] & 0xC000) != 0x4000) + if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) return 0; - return id[83] & (1 << 13); + return id[ATA_ID_COMMAND_SET_2] & (1 << 13); } static inline int ata_id_has_lba48(const u16 *id) { - if ((id[83] & 0xC000) != 0x4000) + if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) return 0; - if (!ata_id_u64(id, 100)) + if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2)) return 0; - return id[83] & (1 << 10); + return id[ATA_ID_COMMAND_SET_2] & (1 << 10); } static inline int ata_id_hpa_enabled(const u16 *id) { /* Yes children, word 83 valid bits cover word 82 data */ - if ((id[83] & 0xC000) != 0x4000) + if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) return 0; /* And 87 covers 85-87 */ - if ((id[87] & 0xC000) != 0x4000) + if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) return 0; /* Check command sets enabled as well as supported */ - if ((id[85] & ( 1 << 10)) == 0) + if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0) return 0; - return id[82] & (1 << 10); + return id[ATA_ID_COMMAND_SET_1] & (1 << 10); } static inline int ata_id_has_wcache(const u16 *id) { /* Yes children, word 83 valid bits cover word 82 data */ - if ((id[83] & 0xC000) != 0x4000) + if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) return 0; - return id[82] & (1 << 5); + return id[ATA_ID_COMMAND_SET_1] & (1 << 5); } static inline int ata_id_has_pm(const u16 *id) { - if ((id[83] & 0xC000) != 0x4000) + if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) return 0; - return id[82] & (1 << 3); + return id[ATA_ID_COMMAND_SET_1] & (1 << 3); } static inline int ata_id_rahead_enabled(const u16 *id) { - if ((id[87] & 0xC000) != 0x4000) + if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) return 0; - return id[85] & (1 << 6); + return id[ATA_ID_CFS_ENABLE_1] & (1 << 6); } static inline int ata_id_wcache_enabled(const u16 *id) { - if ((id[87] & 0xC000) != 0x4000) + if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) return 0; - return id[85] & (1 << 5); + return id[ATA_ID_CFS_ENABLE_1] & (1 << 5); } /** @@ -581,7 +611,7 @@ static inline unsigned int ata_id_major_version(const u16 *id) static inline int ata_id_is_sata(const u16 *id) { - return ata_id_major_version(id) >= 5 && id[93] == 0; + return ata_id_major_version(id) >= 5 && id[ATA_ID_HW_CONFIG] == 0; } static inline int ata_id_has_tpm(const u16 *id) @@ -599,7 +629,7 @@ static inline int ata_id_has_dword_io(const u16 *id) /* ATA 8 reuses this flag for "trusted" computing */ if (ata_id_major_version(id) > 7) return 0; - if (id[48] & (1 << 0)) + if (id[ATA_ID_DWORD_IO] & (1 << 0)) return 1; return 0; } @@ -608,22 +638,22 @@ static inline int ata_id_current_chs_valid(const u16 *id) { /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command has not been issued to the device then the values of - id[54] to id[56] are vendor specific. */ - return (id[53] & 0x01) && /* Current translation valid */ - id[54] && /* cylinders in current translation */ - id[55] && /* heads in current translation */ - id[55] <= 16 && - id[56]; /* sectors in current translation */ + id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */ + return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */ + id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */ + id[ATA_ID_CUR_HEADS] && /* heads in current translation */ + id[ATA_ID_CUR_HEADS] <= 16 && + id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */ } static inline int ata_id_is_cfa(const u16 *id) { - u16 v = id[0]; - if (v == 0x848A) /* Standard CF */ + if (id[ATA_ID_CONFIG] == 0x848A) /* Standard CF */ return 1; /* Could be CF hiding as standard ATA */ - if (ata_id_major_version(id) >= 3 && id[82] != 0xFFFF && - (id[82] & ( 1 << 2))) + if (ata_id_major_version(id) >= 3 && + id[ATA_ID_COMMAND_SET_1] != 0xFFFF && + (id[ATA_ID_COMMAND_SET_1] & (1 << 2))) return 1; return 0; } @@ -632,21 +662,21 @@ static inline int ata_drive_40wire(const u16 *dev_id) { if (ata_id_is_sata(dev_id)) return 0; /* SATA */ - if ((dev_id[93] & 0xE000) == 0x6000) + if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000) return 0; /* 80 wire */ return 1; } static inline int ata_drive_40wire_relaxed(const u16 *dev_id) { - if ((dev_id[93] & 0x2000) == 0x2000) + if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000) return 0; /* 80 wire */ return 1; } static inline int atapi_cdb_len(const u16 *dev_id) { - u16 tmp = dev_id[0] & 0x3; + u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3; switch (tmp) { case 0: return 12; case 1: return 16; @@ -656,7 +686,7 @@ static inline int atapi_cdb_len(const u16 *dev_id) static inline int atapi_command_packet_set(const u16 *dev_id) { - return (dev_id[0] >> 8) & 0x1f; + return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f; } static inline int atapi_id_dmadir(const u16 *dev_id) -- cgit v1.2.3 From 476d9894dde2da2c2b326d70b5bce5eccc593c8b Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Mon, 18 Aug 2008 21:40:05 +0200 Subject: ata: add missing ATA_CMD_* defines Add missing ATA_CMD_* defines to . Also add ATA_EXABYTE_ENABLE_NEST, SETFEATURES_AAM_* and ATA_SMART_* defines while at it. Partially based on earlier work by Chris Wedgwood. Acked-by: Chris Wedgwood Acked-by: Jeff Garzik Signed-off-by: Bartlomiej Zolnierkiewicz --- include/linux/ata.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ata.h b/include/linux/ata.h index 03fff6239b3c..cf4ef6d915ac 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -222,6 +222,13 @@ enum { ATA_CMD_PMP_WRITE = 0xE8, ATA_CMD_CONF_OVERLAY = 0xB1, ATA_CMD_SEC_FREEZE_LOCK = 0xF5, + ATA_CMD_SMART = 0xB0, + ATA_CMD_MEDIA_LOCK = 0xDE, + ATA_CMD_MEDIA_UNLOCK = 0xDF, + /* marked obsolete in the ATA/ATAPI-7 spec */ + ATA_CMD_RESTORE = 0x10, + /* EXABYTE specific */ + ATA_EXABYTE_ENABLE_NEST = 0xF0, /* READ_LOG_EXT pages */ ATA_LOG_SATA_NCQ = 0x10, @@ -262,6 +269,10 @@ enum { SETFEATURES_WC_ON = 0x02, /* Enable write cache */ SETFEATURES_WC_OFF = 0x82, /* Disable write cache */ + /* Enable/Disable Automatic Acoustic Management */ + SETFEATURES_AAM_ON = 0x42, + SETFEATURES_AAM_OFF = 0xC2, + SETFEATURES_SPINUP = 0x07, /* Spin-up drive */ SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */ @@ -284,6 +295,15 @@ enum { ATA_DCO_IDENTIFY = 0xC2, ATA_DCO_SET = 0xC3, + /* feature values for SMART */ + ATA_SMART_ENABLE = 0xD8, + ATA_SMART_READ_VALUES = 0xD0, + ATA_SMART_READ_THRESHOLDS = 0xD1, + + /* password used in LBA Mid / LBA High for executing SMART commands */ + ATA_SMART_LBAM_PASS = 0x4F, + ATA_SMART_LBAH_PASS = 0xC2, + /* ATAPI stuff */ ATAPI_PKT_DMA = (1 << 0), ATAPI_DMADIR = (1 << 2), /* ATAPI data dir: -- cgit v1.2.3 From b59116205c54c89df9cc80721b59e1e8d14488f1 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Mon, 18 Aug 2008 21:40:05 +0200 Subject: ata: add missing ATA_* defines Add missing ATA_* defines to . Also add ATAPI_{LFS,EOM,ILI,IO,CODE} defines while at it. Cc: Jeff Garzik Signed-off-by: Bartlomiej Zolnierkiewicz --- include/linux/ata.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/ata.h b/include/linux/ata.h index cf4ef6d915ac..1ce19c1ef0e9 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -153,13 +153,26 @@ enum { ATA_BUSY = (1 << 7), /* BSY status bit */ ATA_DRDY = (1 << 6), /* device ready */ ATA_DF = (1 << 5), /* device fault */ + ATA_DSC = (1 << 4), /* drive seek complete */ ATA_DRQ = (1 << 3), /* data request i/o */ + ATA_CORR = (1 << 2), /* corrected data error */ + ATA_IDX = (1 << 1), /* index */ ATA_ERR = (1 << 0), /* have an error */ ATA_SRST = (1 << 2), /* software reset */ ATA_ICRC = (1 << 7), /* interface CRC error */ + ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */ ATA_UNC = (1 << 6), /* uncorrectable media error */ + ATA_MC = (1 << 5), /* media changed */ ATA_IDNF = (1 << 4), /* ID not found */ + ATA_MCR = (1 << 3), /* media change requested */ ATA_ABORTED = (1 << 2), /* command aborted */ + ATA_TRK0NF = (1 << 1), /* track 0 not found */ + ATA_AMNF = (1 << 0), /* address mark not found */ + ATAPI_LFS = 0xF0, /* last failed sense */ + ATAPI_EOM = ATA_TRK0NF, /* end of media */ + ATAPI_ILI = ATA_AMNF, /* illegal length indication */ + ATAPI_IO = (1 << 1), + ATAPI_COD = (1 << 0), /* ATA command block registers */ ATA_REG_DATA = 0x00, -- cgit v1.2.3 From 056c58e8eb4d6765214757e541b68095e2eb2bd2 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Mon, 18 Aug 2008 20:22:54 +0200 Subject: PCI: add acpi_find_root_bridge_handle Consolidate finding of a root bridge and getting its handle to the one inline function. It's cut & pasted on multiple places. Use this new inline in those. Cc: kristen.c.accardi@intel.com Acked-by: Alex Chiang Signed-off-by: Jiri Slaby Signed-off-by: Jesse Barnes --- include/linux/pci-acpi.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pci-acpi.h b/include/linux/pci-acpi.h index 3ba25065fa96..8837928fbf33 100644 --- a/include/linux/pci-acpi.h +++ b/include/linux/pci-acpi.h @@ -57,6 +57,15 @@ static inline acpi_status pcie_osc_support_set(u32 flags) { return __pci_osc_support_set(flags, PCI_EXPRESS_ROOT_HID_STRING); } +static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev) +{ + /* Find root host bridge */ + while (pdev->bus->self) + pdev = pdev->bus->self; + + return acpi_get_pci_rootbridge_handle(pci_domain_nr(pdev->bus), + pdev->bus->number); +} #else #if !defined(AE_ERROR) typedef u32 acpi_status; @@ -66,6 +75,8 @@ static inline acpi_status pci_osc_control_set(acpi_handle handle, u32 flags) {return AE_ERROR;} static inline acpi_status pci_osc_support_set(u32 flags) {return AE_ERROR;} static inline acpi_status pcie_osc_support_set(u32 flags) {return AE_ERROR;} +static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev) +{ return NULL; } #endif #endif /* _PCI_ACPI_H_ */ -- cgit v1.2.3 From e4464facd6f1404c2baeb6798d71e34423e7aeaa Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Wed, 20 Aug 2008 14:58:23 +0100 Subject: Reserve NFS fileid values for btrfs Purely cosmetic for now, but we might as well get it merged ASAP. Signed-off-by: David Woodhouse Signed-off-by: Linus Torvalds --- include/linux/exportfs.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'include/linux') diff --git a/include/linux/exportfs.h b/include/linux/exportfs.h index f5abd1306638..27e772cefb6a 100644 --- a/include/linux/exportfs.h +++ b/include/linux/exportfs.h @@ -34,6 +34,27 @@ enum fid_type { */ FILEID_INO32_GEN_PARENT = 2, + /* + * 64 bit object ID, 64 bit root object ID, + * 32 bit generation number. + */ + FILEID_BTRFS_WITHOUT_PARENT = 0x4d, + + /* + * 64 bit object ID, 64 bit root object ID, + * 32 bit generation number, + * 64 bit parent object ID, 32 bit parent generation. + */ + FILEID_BTRFS_WITH_PARENT = 0x4e, + + /* + * 64 bit object ID, 64 bit root object ID, + * 32 bit generation number, + * 64 bit parent object ID, 32 bit parent generation, + * 64 bit parent root object ID. + */ + FILEID_BTRFS_WITH_PARENT_ROOT = 0x4f, + /* * 32 bit block number, 16 bit partition reference, * 16 bit unused, 32 bit generation number. -- cgit v1.2.3 From 2d70b68d42b5196a48ccb639e3797f097ef5bea3 Mon Sep 17 00:00:00 2001 From: Ken Chen Date: Wed, 20 Aug 2008 14:09:17 -0700 Subject: fix setpriority(PRIO_PGRP) thread iterator breakage When user calls sys_setpriority(PRIO_PGRP ...) on a NPTL style multi-LWP process, only the task leader of the process is affected, all other sibling LWP threads didn't receive the setting. The problem was that the iterator used in sys_setpriority() only iteartes over one task for each process, ignoring all other sibling thread. Introduce a new macro do_each_pid_thread / while_each_pid_thread to walk each thread of a process. Convert 4 call sites in {set/get}priority and ioprio_{set/get}. Signed-off-by: Ken Chen Cc: Oleg Nesterov Cc: Roland McGrath Cc: Ingo Molnar Cc: Thomas Gleixner Cc: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pid.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pid.h b/include/linux/pid.h index 22921ac4cfd9..d7e98ff8021e 100644 --- a/include/linux/pid.h +++ b/include/linux/pid.h @@ -161,4 +161,13 @@ pid_t pid_vnr(struct pid *pid); } \ } while (0) +#define do_each_pid_thread(pid, type, task) \ + do_each_pid_task(pid, type, task) { \ + struct task_struct *tg___ = task; \ + do { + +#define while_each_pid_thread(pid, type, task) \ + } while_each_thread(tg___, task); \ + task = tg___; \ + } while_each_pid_task(pid, type, task) #endif /* _LINUX_PID_H */ -- cgit v1.2.3 From 479db0bf408e65baa14d2a9821abfcbc0804b847 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Wed, 20 Aug 2008 14:09:18 -0700 Subject: mm: dirty page tracking race fix There is a race with dirty page accounting where a page may not properly be accounted for. clear_page_dirty_for_io() calls page_mkclean; then TestClearPageDirty. page_mkclean walks the rmaps for that page, and for each one it cleans and write protects the pte if it was dirty. It uses page_check_address to find the pte. That function has a shortcut to avoid the ptl if the pte is not present. Unfortunately, the pte can be switched to not-present then back to present by other code while holding the page table lock -- this should not be a signal for page_mkclean to ignore that pte, because it may be dirty. For example, powerpc64's set_pte_at will clear a previously present pte before setting it to the desired value. There may also be other code in core mm or in arch which do similar things. The consequence of the bug is loss of data integrity due to msync, and loss of dirty page accounting accuracy. XIP's __xip_unmap could easily also be unreliable (depending on the exact XIP locking scheme), which can lead to data corruption. Fix this by having an option to always take ptl to check the pte in page_check_address. It's possible to retain this optimization for page_referenced and try_to_unmap. Signed-off-by: Nick Piggin Cc: Jared Hulbert Cc: Carsten Otte Cc: Hugh Dickins Acked-by: Peter Zijlstra Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rmap.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/rmap.h b/include/linux/rmap.h index 69407f85e10b..fed6f5e0b411 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -102,7 +102,7 @@ int try_to_unmap(struct page *, int ignore_refs); * Called from mm/filemap_xip.c to unmap empty zero page */ pte_t *page_check_address(struct page *, struct mm_struct *, - unsigned long, spinlock_t **); + unsigned long, spinlock_t **, int); /* * Used by swapoff to help locate where page is expected in vma. -- cgit v1.2.3 From d847471d063663b9f36927d265c66a270c0cfaab Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Wed, 20 Aug 2008 14:09:23 -0700 Subject: fbdefio: add set_page_dirty handler to deferred IO FB Fixes kernel BUG at lib/radix-tree.c:473. Previously the handler was incidentally provided by tmpfs but this was removed with: commit 14fcc23fdc78e9d32372553ccf21758a9bd56fa1 Author: Hugh Dickins Date: Mon Jul 28 15:46:19 2008 -0700 tmpfs: fix kernel BUG in shmem_delete_inode relying on this behaviour was incorrect in any case and the BUG also appeared when the device node was on an ext3 filesystem. v2: override a_ops at open() time rather than mmap() time to minimise races per AKPM's concerns. Signed-off-by: Ian Campbell Cc: Jaya Kumar Cc: Nick Piggin Cc: Peter Zijlstra Cc: Hugh Dickins Cc: Johannes Weiner Cc: Jeremy Fitzhardinge Cc: Kel Modderman Cc: Markus Armbruster Cc: Krzysztof Helt Cc: [14fcc23fd is in 2.6.25.14 and 2.6.26.1] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fb.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fb.h b/include/linux/fb.h index 3b8870e32afd..531ccd5f5960 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -976,6 +976,9 @@ static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, /* drivers/video/fb_defio.c */ extern void fb_deferred_io_init(struct fb_info *info); +extern void fb_deferred_io_open(struct fb_info *info, + struct inode *inode, + struct file *file); extern void fb_deferred_io_cleanup(struct fb_info *info); extern int fb_deferred_io_fsync(struct file *file, struct dentry *dentry, int datasync); -- cgit v1.2.3 From 3c4fbe5e01d7e5309be5045e7ae0db20a049e6dc Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Wed, 20 Aug 2008 16:37:38 -0700 Subject: nohz: fix wrong event handler after online an offlined cpu On the tickless system(CONFIG_NO_HZ=y and CONFIG_HIGH_RES_TIMERS=n), after I made an offlined cpu online, I found this cpu's event handler was tick_handle_periodic, not tick_nohz_handler. After debuging, I found this bug was caused by the wrong tick mode. the tick mode is not changed to NOHZ_MODE_INACTIVE when the cpu is offline. This patch fixes this bug. Signed-off-by: Miao Xie Signed-off-by: Andrew Morton Signed-off-by: Ingo Molnar --- include/linux/tick.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/tick.h b/include/linux/tick.h index d3c02695dc5d..8cf8cfe2cc97 100644 --- a/include/linux/tick.h +++ b/include/linux/tick.h @@ -74,10 +74,13 @@ extern struct tick_device *tick_get_device(int cpu); extern int tick_init_highres(void); extern int tick_program_event(ktime_t expires, int force); extern void tick_setup_sched_timer(void); +# endif + +# if defined CONFIG_NO_HZ || defined CONFIG_HIGH_RES_TIMERS extern void tick_cancel_sched_timer(int cpu); # else static inline void tick_cancel_sched_timer(int cpu) { } -# endif /* HIGHRES */ +# endif # ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST extern struct tick_device *tick_get_broadcast_device(void); -- cgit v1.2.3 From bf9ca69fc8d19d4034391d3df4c35dccdef9d28c Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Wed, 30 Jul 2008 12:29:21 -0700 Subject: dev_printk(): constify the `dev' argument Add const markings to dev_name and dev_driver_string to make it clear that dev_printk doesn't modify dev. This is a prerequisite to adding more const markings to other functions make it clearer, which functions can modify dev and which can't. Signed-off-by: Jean Delvare Cc: Kay Sievers Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- include/linux/device.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index d24a47f80f9c..a701c1b5184c 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -406,7 +406,7 @@ struct device { /* Get the wakeup routines, which depend on struct device */ #include -static inline const char *dev_name(struct device *dev) +static inline const char *dev_name(const struct device *dev) { /* will be changed into kobject_name(&dev->kobj) in the near future */ return dev->bus_id; @@ -518,7 +518,7 @@ extern void device_shutdown(void); extern void sysdev_shutdown(void); /* debugging and troubleshooting/diagnostic helpers. */ -extern const char *dev_driver_string(struct device *dev); +extern const char *dev_driver_string(const struct device *dev); #define dev_printk(level, dev, format, arg...) \ printk(level "%s %s: " format , dev_driver_string(dev) , \ dev_name(dev) , ## arg) -- cgit v1.2.3 From c906a48adc74fc455378137ac5124b13e7030a15 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Fri, 30 May 2008 10:45:12 -0700 Subject: driver core: add init_name to struct device This gives us a way to handle both the bus_id and init_name values being used for a while during the transition period. Cc: Kay Sievers 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 a701c1b5184c..4d8372d135df 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -358,6 +358,7 @@ struct device { struct kobject kobj; char bus_id[BUS_ID_SIZE]; /* position on parent bus */ + const char *init_name; /* initial name of the device */ struct device_type *type; unsigned uevent_suppress:1; -- cgit v1.2.3 From 55151d7daba185f94e9dc561a5a2ba36b5f647dd Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 12 Aug 2008 14:33:59 -0400 Subject: USB: Defer Set-Interface for suspended devices This patch (as1128) fixes one of the problems related to the new PM infrastructure. We are not allowed to register new child devices during the middle of a system sleep transition, but unbinding a USB driver causes the core to automatically install altsetting 0 and thereby create new endpoint pseudo-devices. The patch fixes this problem (and the related problem that installing altsetting 0 will fail if the device is suspended) by deferring the Set-Interface call until some later time when it is legal and can succeed. Possible later times are: when a new driver is being probed for the interface, and when the interface is being resumed. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb.h b/include/linux/usb.h index 0924cd9c30f6..94ac74aba6b6 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -110,6 +110,8 @@ enum usb_interface_condition { * @sysfs_files_created: sysfs attributes exist * @needs_remote_wakeup: flag set when the driver requires remote-wakeup * capability during autosuspend. + * @needs_altsetting0: flag set when a set-interface request for altsetting 0 + * has been deferred. * @needs_binding: flag set when the driver should be re-probed or unbound * following a reset or suspend operation it doesn't support. * @dev: driver model's view of this device @@ -162,6 +164,7 @@ struct usb_interface { unsigned is_active:1; /* the interface is not suspended */ unsigned sysfs_files_created:1; /* the sysfs attributes exist */ unsigned needs_remote_wakeup:1; /* driver requires remote wakeup */ + unsigned needs_altsetting0:1; /* switch to altsetting 0 is pending */ unsigned needs_binding:1; /* needs delayed unbind/rebind */ struct device dev; /* interface specific device info */ -- cgit v1.2.3 From 05944bdf6fadb5394710269df6770dde447b23ca Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 13 Aug 2008 20:19:09 +0900 Subject: libata: implement no[hs]rst force params Implement force params nohrst, nosrst and norst. This is to work around reset related problems and ease debugging. Signed-off-by: Tejun Heo 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 06b80337303b..5340d4c83fd9 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -163,6 +163,7 @@ enum { ATA_DEV_NONE = 9, /* no device */ /* struct ata_link flags */ + ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ -- cgit v1.2.3 From d127ea7b8643a93d14d1f3c542974407f14d3663 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 31 Jul 2008 16:09:34 +0900 Subject: libata: restore SControl on detach Save SControl during probing and restore it on detach. This prevents adjustments made by libata drivers to seep into the next driver which gets attached (be it a libata one or not). It's not clear whether SControl also needs to be restored on suspend. The next system to have control (ACPI or kexec'd kernel) would probably like to see the original SControl value but there's no guarantee that a link is gonna keep working after SControl is adjusted without a reset and adding a reset and modified recovery cycle soley for this is an overkill. For now, do it only for detach. Signed-off-by: Tejun Heo 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 5340d4c83fd9..80233fdc159f 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -647,6 +647,7 @@ struct ata_link { unsigned int flags; /* ATA_LFLAG_xxx */ + u32 saved_scontrol; /* SControl on probe */ unsigned int hw_sata_spd_limit; unsigned int sata_spd_limit; unsigned int sata_spd; /* current SATA PHY speed */ -- cgit v1.2.3 From b15b3ebae102f89c25ccbcae0b2099af312f2e82 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Fri, 1 Aug 2008 09:18:34 +0100 Subject: libata: Fix a large collection of DMA mode mismatches MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Dave Müller sent a diff for the pata_oldpiix that highlighted a problem where a lot of the ATA drivers assume dma_mode == 0 means "no DMA" while the core code uses 0xFF. This turns out to have other consequences such as code doing >= XFER_UDMA_0 also catching 0xFF as UDMAlots. Fortunately it doesn't generally affect set_dma_mode, although some drivers call back into their own set mode code from other points. Having been through the drivers I've added helpers for using_udma/using_mwdma dma_enabled so that people don't open code ranges that may change (eg if UDMA8 appears somewhere) Thanks to David for the initial bits [and added fix for pata_oldpiix from and signed-off-by Dave Mueller -jg] Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- include/linux/libata.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'include/linux') diff --git a/include/linux/libata.h b/include/linux/libata.h index 80233fdc159f..225bfc5bd9ec 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1429,6 +1429,28 @@ static inline unsigned long ata_deadline(unsigned long from_jiffies, return from_jiffies + msecs_to_jiffies(timeout_msecs); } +/* Don't open code these in drivers as there are traps. Firstly the range may + change in future hardware and specs, secondly 0xFF means 'no DMA' but is + > UDMA_0. Dyma ddreigiau */ + +static inline int ata_using_mwdma(struct ata_device *adev) +{ + if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) + return 1; + return 0; +} + +static inline int ata_using_udma(struct ata_device *adev) +{ + if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) + return 1; + return 0; +} + +static inline int ata_dma_enabled(struct ata_device *adev) +{ + return (adev->dma_mode == 0xFF ? 0 : 1); +} /************************************************************************** * PMP - drivers/ata/libata-pmp.c -- cgit v1.2.3 From 7a8fc9b248e77a4eab0613acf30a6811799786b3 Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Sun, 17 Aug 2008 17:36:59 +0300 Subject: removed unused #include 's This patch lets the files using linux/version.h match the files that #include it. Signed-off-by: Adrian Bunk Signed-off-by: Linus Torvalds --- include/linux/fs_uart_pd.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/fs_uart_pd.h b/include/linux/fs_uart_pd.h index 809bb9ffc788..36b61ff39277 100644 --- a/include/linux/fs_uart_pd.h +++ b/include/linux/fs_uart_pd.h @@ -12,7 +12,6 @@ #ifndef FS_UART_PD_H #define FS_UART_PD_H -#include #include enum fs_uart_id { -- cgit v1.2.3 From e45b590b976465c258f3e2a6cc84573fc19e16d3 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 7 Aug 2008 23:49:07 +0200 Subject: [PATCH] change d_add_ci argument ordering As pointed out during review d_add_ci argument order should match d_add, so switch the dentry and inode arguments. Signed-off-by: Christoph Hellwig 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 07aa198f19ed..efba1de629ac 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -230,7 +230,7 @@ extern void d_delete(struct dentry *); extern struct dentry * d_alloc(struct dentry *, const struct qstr *); extern struct dentry * d_alloc_anon(struct inode *); extern struct dentry * d_splice_alias(struct inode *, struct dentry *); -extern struct dentry * d_add_ci(struct inode *, struct dentry *, struct qstr *); +extern struct dentry * d_add_ci(struct dentry *, struct inode *, struct qstr *); extern void shrink_dcache_sb(struct super_block *); extern void shrink_dcache_parent(struct dentry *); extern void shrink_dcache_for_umount(struct super_block *); -- cgit v1.2.3 From bf2002967775cbb233876d51ff94e8daa7e77858 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Tue, 26 Aug 2008 00:19:27 -0500 Subject: stop_machine: Remove deprecated stop_machine_run Everyone should be using stop_machine() now. The staged API transition helped life in linux-next. Signed-off-by: Rusty Russell --- include/linux/stop_machine.h | 19 +------------------ 1 file changed, 1 insertion(+), 18 deletions(-) (limited to 'include/linux') diff --git a/include/linux/stop_machine.h b/include/linux/stop_machine.h index f1cb0ba6d715..faf1519b5adc 100644 --- a/include/linux/stop_machine.h +++ b/include/linux/stop_machine.h @@ -3,16 +3,13 @@ /* "Bogolock": stop the entire machine, disable interrupts. This is a very heavy lock, which is equivalent to grabbing every spinlock (and more). So the "read" side to such a lock is anything which - diables preeempt. */ + disables preeempt. */ #include #include #include #if defined(CONFIG_STOP_MACHINE) && defined(CONFIG_SMP) -/* Deprecated, but useful for transition. */ -#define ALL_CPUS ~0U - /** * stop_machine: freeze the machine on all CPUs and run this function * @fn: the function to run @@ -50,18 +47,4 @@ static inline int stop_machine(int (*fn)(void *), void *data, return ret; } #endif /* CONFIG_SMP */ - -static inline int __deprecated stop_machine_run(int (*fn)(void *), void *data, - unsigned int cpu) -{ - /* If they don't care which cpu fn runs on, just pick one. */ - if (cpu == NR_CPUS) - return stop_machine(fn, data, NULL); - else if (cpu == ~0U) - return stop_machine(fn, data, &cpu_possible_map); - else { - cpumask_t cpus = cpumask_of_cpu(cpu); - return stop_machine(fn, data, &cpus); - } -} #endif /* _LINUX_STOP_MACHINE */ -- cgit v1.2.3 From 1327138e294ffda120a50c8f31d792addb196c79 Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Wed, 6 Aug 2008 01:36:09 +0300 Subject: KVM: fix userspace ABI breakage The following part of commit 9ef621d3be56e1188300476a8102ff54f7b6793f (KVM: Support mixed endian machines) changed on the size of a struct that is exported to userspace: include/linux/kvm.h: @@ -318,14 +318,14 @@ struct kvm_trace_rec { __u32 vcpu_id; union { struct { - __u32 cycle_lo, cycle_hi; + __u64 cycle_u64; __u32 extra_u32[KVM_TRC_EXTRA_MAX]; } cycle; struct { __u32 extra_u32[KVM_TRC_EXTRA_MAX]; } nocycle; } u; -}; +} __attribute__((packed)); Packing a struct was the correct idea, but it packed the wrong struct. Signed-off-by: Adrian Bunk Signed-off-by: Avi Kivity --- include/linux/kvm.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 69511f74f912..70a30651cd12 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -320,12 +320,12 @@ struct kvm_trace_rec { struct { __u64 cycle_u64; __u32 extra_u32[KVM_TRC_EXTRA_MAX]; - } cycle; + } __attribute__((packed)) cycle; struct { __u32 extra_u32[KVM_TRC_EXTRA_MAX]; } nocycle; } u; -} __attribute__((packed)); +}; #define KVMIO 0xAE -- cgit v1.2.3 From 5770a3fb5f8544d40ae03b010318345cdd05d662 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Tue, 26 Aug 2008 15:29:22 +0100 Subject: Fix userspace export of Including in the user-visible part of this header has caused build regressions with headers from 2.6.27-rc. Move it down to the #ifdef __KERNEL__ part, which is the only place it's needed. Move some other kernel-only things down there too, while we're at it. Signed-off-by: David Woodhouse Signed-off-by: Linus Torvalds --- include/linux/net.h | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/include/linux/net.h b/include/linux/net.h index 4a9a30f2d68f..6dc14a240042 100644 --- a/include/linux/net.h +++ b/include/linux/net.h @@ -18,16 +18,9 @@ #ifndef _LINUX_NET_H #define _LINUX_NET_H -#include #include -#include /* For O_CLOEXEC and O_NONBLOCK */ #include -struct poll_table_struct; -struct pipe_inode_info; -struct inode; -struct net; - #define NPROTO AF_MAX #define SYS_SOCKET 1 /* sys_socket(2) */ @@ -62,6 +55,13 @@ typedef enum { #ifdef __KERNEL__ #include #include +#include +#include /* For O_CLOEXEC and O_NONBLOCK */ + +struct poll_table_struct; +struct pipe_inode_info; +struct inode; +struct net; #define SOCK_ASYNC_NOSPACE 0 #define SOCK_ASYNC_WAITDATA 1 -- cgit v1.2.3 From abf5439370491dd6fbb4fe1a7939680d2a9bc9d4 Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Sat, 16 Aug 2008 14:10:05 +0900 Subject: block: move cmdfilter from gendisk to request_queue cmd_filter works only for the block layer SG_IO with SCSI block devices. It breaks scsi/sg.c, bsg, and the block layer SG_IO with SCSI character devices (such as st). We hit a kernel crash with them. The problem is that cmd_filter code accesses to gendisk (having struct blk_scsi_cmd_filter) via inode->i_bdev->bd_disk. It works for only SCSI block device files. With character device files, inode->i_bdev leads you to struct cdev. inode->i_bdev->bd_disk->blk_scsi_cmd_filter isn't safe. SCSI ULDs don't expose gendisk; they keep it private. bsg needs to be independent on any protocols. We shouldn't change ULDs to expose their gendisk. This patch moves struct blk_scsi_cmd_filter from gendisk to request_queue, a common object, which eveyone can access to. The user interface doesn't change; users can change the filters via /sys/block/. gendisk has a pointer to request_queue so the cmd_filter code accesses to struct blk_scsi_cmd_filter. Signed-off-by: FUJITA Tomonori Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 16 +++++++++++++--- include/linux/genhd.h | 10 ---------- 2 files changed, 13 insertions(+), 13 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index e61f22be4d0e..d2d34e2774b2 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -280,6 +280,15 @@ struct blk_queue_tag { atomic_t refcnt; /* map can be shared */ }; +#define BLK_SCSI_MAX_CMDS (256) +#define BLK_SCSI_CMD_PER_LONG (BLK_SCSI_MAX_CMDS / (sizeof(long) * 8)) + +struct blk_scsi_cmd_filter { + unsigned long read_ok[BLK_SCSI_CMD_PER_LONG]; + unsigned long write_ok[BLK_SCSI_CMD_PER_LONG]; + struct kobject kobj; +}; + struct request_queue { /* @@ -398,6 +407,7 @@ struct request_queue #if defined(CONFIG_BLK_DEV_BSG) struct bsg_class_device bsg_dev; #endif + struct blk_scsi_cmd_filter cmd_filter; }; #define QUEUE_FLAG_CLUSTER 0 /* cluster several segments into 1 */ @@ -833,11 +843,11 @@ extern int blkdev_issue_flush(struct block_device *, sector_t *); /* * command filter functions */ -extern int blk_verify_command(struct file *file, unsigned char *cmd); -extern int blk_cmd_filter_verify_command(struct blk_scsi_cmd_filter *filter, - unsigned char *cmd, mode_t *f_mode); +extern int blk_verify_command(struct blk_scsi_cmd_filter *filter, + unsigned char *cmd, int has_write_perm); extern int blk_register_filter(struct gendisk *disk); extern void blk_unregister_filter(struct gendisk *disk); +extern void blk_set_cmd_filter_defaults(struct blk_scsi_cmd_filter *filter); #define MAX_PHYS_SEGMENTS 128 #define MAX_HW_SEGMENTS 128 diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 118216f1bd3c..be4f5e5bfe06 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -110,15 +110,6 @@ struct hd_struct { #define GENHD_FL_SUPPRESS_PARTITION_INFO 32 #define GENHD_FL_FAIL 64 -#define BLK_SCSI_MAX_CMDS (256) -#define BLK_SCSI_CMD_PER_LONG (BLK_SCSI_MAX_CMDS / (sizeof(long) * 8)) - -struct blk_scsi_cmd_filter { - unsigned long read_ok[BLK_SCSI_CMD_PER_LONG]; - unsigned long write_ok[BLK_SCSI_CMD_PER_LONG]; - struct kobject kobj; -}; - struct gendisk { int major; /* major number of driver */ int first_minor; @@ -128,7 +119,6 @@ struct gendisk { struct hd_struct **part; /* [indexed by minor] */ struct block_device_operations *fops; struct request_queue *queue; - struct blk_scsi_cmd_filter cmd_filter; void *private_data; sector_t capacity; -- cgit v1.2.3 From 4beab5c623fef4622f9a8593f85760ff10b5a3f7 Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Sat, 26 Jul 2008 18:03:25 +0900 Subject: block: rename blk_scsi_cmd_filter to blk_cmd_filter Technically, the cmd_filter would be applied to other protocols though it's unlikely to happen. Putting SCSI stuff to request_queue is kinda layer violation. So let's rename it. Signed-off-by: FUJITA Tomonori Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index d2d34e2774b2..ab247d589ad6 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -283,7 +283,7 @@ struct blk_queue_tag { #define BLK_SCSI_MAX_CMDS (256) #define BLK_SCSI_CMD_PER_LONG (BLK_SCSI_MAX_CMDS / (sizeof(long) * 8)) -struct blk_scsi_cmd_filter { +struct blk_cmd_filter { unsigned long read_ok[BLK_SCSI_CMD_PER_LONG]; unsigned long write_ok[BLK_SCSI_CMD_PER_LONG]; struct kobject kobj; @@ -407,7 +407,7 @@ struct request_queue #if defined(CONFIG_BLK_DEV_BSG) struct bsg_class_device bsg_dev; #endif - struct blk_scsi_cmd_filter cmd_filter; + struct blk_cmd_filter cmd_filter; }; #define QUEUE_FLAG_CLUSTER 0 /* cluster several segments into 1 */ @@ -843,11 +843,11 @@ extern int blkdev_issue_flush(struct block_device *, sector_t *); /* * command filter functions */ -extern int blk_verify_command(struct blk_scsi_cmd_filter *filter, +extern int blk_verify_command(struct blk_cmd_filter *filter, unsigned char *cmd, int has_write_perm); extern int blk_register_filter(struct gendisk *disk); extern void blk_unregister_filter(struct gendisk *disk); -extern void blk_set_cmd_filter_defaults(struct blk_scsi_cmd_filter *filter); +extern void blk_set_cmd_filter_defaults(struct blk_cmd_filter *filter); #define MAX_PHYS_SEGMENTS 128 #define MAX_HW_SEGMENTS 128 -- cgit v1.2.3 From 5168c47b4c294412f079dd3cc891e0276bb0479e Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Tue, 26 Aug 2008 09:03:17 +0200 Subject: block: remove blk_queue_tag_depth() and blk_queue_tag_queue() They are unused and ->busy doesn't exist anymore. Signed-off-by: Jens Axboe --- include/linux/blkdev.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index ab247d589ad6..44710d7e7bff 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -817,8 +817,6 @@ extern void blk_put_queue(struct request_queue *); /* * tag stuff */ -#define blk_queue_tag_depth(q) ((q)->queue_tags->busy) -#define blk_queue_tag_queue(q) ((q)->queue_tags->busy < (q)->queue_tags->max_depth) #define blk_rq_tagged(rq) ((rq)->cmd_flags & REQ_QUEUED) extern int blk_queue_start_tag(struct request_queue *, struct request *); extern struct request *blk_queue_find_tag(struct request_queue *, int); -- cgit v1.2.3