From a1cddb88920b915eaba10712ecfd0fc698b00a22 Mon Sep 17 00:00:00 2001 From: Jack Steiner Date: Wed, 31 Aug 2005 08:05:00 -0700 Subject: [IA64-SGI] Add new vendor-specific SAL calls for: - notifying the PROM of specific features that are supported by the OS. This is used to enable PROM feature if and only if the corresponding feature is implemented in the OS - fetch feature sets that are supported by the current PROM. This allows the OS to selectively enable features when the PROM support is available. Signed-off-by: Jack Steiner Signed-off-by: Tony Luck --- include/asm-ia64/sn/sn_feature_sets.h | 57 +++++++++++++++++++++++++++++++++++ include/asm-ia64/sn/sn_sal.h | 36 ++++++++++++++++------ 2 files changed, 84 insertions(+), 9 deletions(-) create mode 100644 include/asm-ia64/sn/sn_feature_sets.h (limited to 'include') diff --git a/include/asm-ia64/sn/sn_feature_sets.h b/include/asm-ia64/sn/sn_feature_sets.h new file mode 100644 index 000000000000..e68a80853d5d --- /dev/null +++ b/include/asm-ia64/sn/sn_feature_sets.h @@ -0,0 +1,57 @@ +#ifndef _ASM_IA64_SN_FEATURE_SETS_H +#define _ASM_IA64_SN_FEATURE_SETS_H + +/* + * SN PROM Features + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (c) 2005 Silicon Graphics, Inc. All rights reserved. + */ + + +#include +#include + +/* --------------------- PROM Features -----------------------------*/ +extern int sn_prom_feature_available(int id); + +#define MAX_PROM_FEATURE_SETS 2 + +/* + * The following defines features that may or may not be supported by the + * current PROM. The OS uses sn_prom_feature_available(feature) to test for + * the presence of a PROM feature. Down rev (old) PROMs will always test + * "false" for new features. + * + * Use: + * if (sn_prom_feature_available(PRF_FEATURE_XXX)) + * ... + */ + +/* + * Example: feature XXX + */ +#define PRF_FEATURE_XXX 0 + + + +/* --------------------- OS Features -------------------------------*/ + +/* + * The following defines OS features that are optionally present in + * the operating system. + * During boot, PROM is notified of these features via a series of calls: + * + * ia64_sn_set_os_feature(feature1); + * + * Once enabled, a feature cannot be disabled. + * + * By default, features are disabled unless explicitly enabled. + */ +#define OSF_MCA_SLV_TO_OS_INIT_SLV 0 +#define OSF_FEAT_LOG_SBES 1 + +#endif /* _ASM_IA64_SN_FEATURE_SETS_H */ diff --git a/include/asm-ia64/sn/sn_sal.h b/include/asm-ia64/sn/sn_sal.h index 27976d223186..231d0d04c3e8 100644 --- a/include/asm-ia64/sn/sn_sal.h +++ b/include/asm-ia64/sn/sn_sal.h @@ -80,6 +80,9 @@ #define SN_SAL_BTE_RECOVER 0x02000061 #define SN_SAL_IOIF_GET_PCI_TOPOLOGY 0x02000062 +#define SN_SAL_GET_PROM_FEATURE_SET 0x02000065 +#define SN_SAL_SET_OS_FEATURE_SET 0x02000066 + /* * Service-specific constants */ @@ -118,8 +121,8 @@ /* * Error Handling Features */ -#define SAL_ERR_FEAT_MCA_SLV_TO_OS_INIT_SLV 0x1 -#define SAL_ERR_FEAT_LOG_SBES 0x2 +#define SAL_ERR_FEAT_MCA_SLV_TO_OS_INIT_SLV 0x1 // obsolete +#define SAL_ERR_FEAT_LOG_SBES 0x2 // obsolete #define SAL_ERR_FEAT_MFR_OVERRIDE 0x4 #define SAL_ERR_FEAT_SBE_THRESHOLD 0xffff0000 @@ -151,12 +154,6 @@ sn_sal_rev(void) return (u32)(systab->sal_b_rev_major << 8 | systab->sal_b_rev_minor); } -/* - * Specify the minimum PROM revsion required for this kernel. - * Note that they're stored in hex format... - */ -#define SN_SAL_MIN_VERSION 0x0404 - /* * Returns the master console nasid, if the call fails, return an illegal * value. @@ -336,7 +333,7 @@ ia64_sn_plat_cpei_handler(void) } /* - * Set Error Handling Features + * Set Error Handling Features (Obsolete) */ static inline u64 ia64_sn_plat_set_error_handling_features(void) @@ -1100,4 +1097,25 @@ ia64_sn_is_fake_prom(void) return (rv.status == 0); } +static inline int +ia64_sn_get_prom_feature_set(int set, unsigned long *feature_set) +{ + struct ia64_sal_retval rv; + + SAL_CALL_NOLOCK(rv, SN_SAL_GET_PROM_FEATURE_SET, set, 0, 0, 0, 0, 0, 0); + if (rv.status != 0) + return rv.status; + *feature_set = rv.v0; + return 0; +} + +static inline int +ia64_sn_set_os_feature(int feature) +{ + struct ia64_sal_retval rv; + + SAL_CALL_NOLOCK(rv, SN_SAL_SET_OS_FEATURE_SET, feature, 0, 0, 0, 0, 0, 0); + return rv.status; +} + #endif /* _ASM_IA64_SN_SN_SAL_H */ -- cgit v1.2.3 From 8a409b0118c2d78f84f740f60fe03abda1fe3333 Mon Sep 17 00:00:00 2001 From: Vojtech Pavlik Date: Mon, 5 Sep 2005 00:08:08 -0500 Subject: Input: HID - add more consumer usages Extend mapping of the consumer usage page in hid-input.c to handle more cases appearing on new USB keyboards. Signed-off-by: Vojtech Pavlik Signed-off-by: Dmitry Torokhov --- include/linux/input.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include') diff --git a/include/linux/input.h b/include/linux/input.h index bdc53c6cc962..227a497c0678 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -287,6 +287,8 @@ struct input_absinfo { #define KEY_SCROLLDOWN 178 #define KEY_KPLEFTPAREN 179 #define KEY_KPRIGHTPAREN 180 +#define KEY_NEW 181 +#define KEY_REDO 182 #define KEY_F13 183 #define KEY_F14 184 @@ -333,6 +335,12 @@ struct input_absinfo { #define KEY_KBDILLUMDOWN 229 #define KEY_KBDILLUMUP 230 +#define KEY_SEND 231 +#define KEY_REPLY 232 +#define KEY_FORWARDMAIL 233 +#define KEY_SAVE 234 +#define KEY_DOCUMENTS 235 + #define KEY_UNKNOWN 240 #define BTN_MISC 0x100 -- cgit v1.2.3 From 0b2b35f68140ceeb1b78ef85680198e63ebc8649 Mon Sep 17 00:00:00 2001 From: Sean Hefty Date: Thu, 1 Sep 2005 09:28:03 -0700 Subject: [PATCH] IB: Add user-supplied context to userspace CM ABI - Add user specified context to all uCM events. Users will not retrieve any events associated with the context after destroying the corresponding cm_id. - Provide the ib_cm_init_qp_attr() call to userspace clients of the CM. This call may be used to set QP attributes properly before modifying the QP. - Fixes some error handling synchonization and cleanup issues. - Performs some minor code cleanup. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier --- include/rdma/ib_user_cm.h | 72 +++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 69 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/rdma/ib_user_cm.h b/include/rdma/ib_user_cm.h index 72182d16778b..e4d1654276ad 100644 --- a/include/rdma/ib_user_cm.h +++ b/include/rdma/ib_user_cm.h @@ -1,5 +1,6 @@ /* * Copyright (c) 2005 Topspin Communications. All rights reserved. + * Copyright (c) 2005 Intel Corporation. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU @@ -37,7 +38,7 @@ #include -#define IB_USER_CM_ABI_VERSION 1 +#define IB_USER_CM_ABI_VERSION 2 enum { IB_USER_CM_CMD_CREATE_ID, @@ -60,6 +61,7 @@ enum { IB_USER_CM_CMD_SEND_SIDR_REP, IB_USER_CM_CMD_EVENT, + IB_USER_CM_CMD_INIT_QP_ATTR, }; /* * command ABI structures. @@ -71,6 +73,7 @@ struct ib_ucm_cmd_hdr { }; struct ib_ucm_create_id { + __u64 uid; __u64 response; }; @@ -79,9 +82,14 @@ struct ib_ucm_create_id_resp { }; struct ib_ucm_destroy_id { + __u64 response; __u32 id; }; +struct ib_ucm_destroy_id_resp { + __u32 events_reported; +}; + struct ib_ucm_attr_id { __u64 response; __u32 id; @@ -94,6 +102,64 @@ struct ib_ucm_attr_id_resp { __be32 remote_id; }; +struct ib_ucm_init_qp_attr { + __u64 response; + __u32 id; + __u32 qp_state; +}; + +struct ib_ucm_ah_attr { + __u8 grh_dgid[16]; + __u32 grh_flow_label; + __u16 dlid; + __u16 reserved; + __u8 grh_sgid_index; + __u8 grh_hop_limit; + __u8 grh_traffic_class; + __u8 sl; + __u8 src_path_bits; + __u8 static_rate; + __u8 is_global; + __u8 port_num; +}; + +struct ib_ucm_init_qp_attr_resp { + __u32 qp_attr_mask; + __u32 qp_state; + __u32 cur_qp_state; + __u32 path_mtu; + __u32 path_mig_state; + __u32 qkey; + __u32 rq_psn; + __u32 sq_psn; + __u32 dest_qp_num; + __u32 qp_access_flags; + + struct ib_ucm_ah_attr ah_attr; + struct ib_ucm_ah_attr alt_ah_attr; + + /* ib_qp_cap */ + __u32 max_send_wr; + __u32 max_recv_wr; + __u32 max_send_sge; + __u32 max_recv_sge; + __u32 max_inline_data; + + __u16 pkey_index; + __u16 alt_pkey_index; + __u8 en_sqd_async_notify; + __u8 sq_draining; + __u8 max_rd_atomic; + __u8 max_dest_rd_atomic; + __u8 min_rnr_timer; + __u8 port_num; + __u8 timeout; + __u8 retry_cnt; + __u8 rnr_retry; + __u8 alt_port_num; + __u8 alt_timeout; +}; + struct ib_ucm_listen { __be64 service_id; __be64 service_mask; @@ -157,6 +223,7 @@ struct ib_ucm_req { }; struct ib_ucm_rep { + __u64 uid; __u64 data; __u32 id; __u32 qpn; @@ -232,7 +299,6 @@ struct ib_ucm_event_get { }; struct ib_ucm_req_event_resp { - __u32 listen_id; /* device */ /* port */ struct ib_ucm_path_rec primary_path; @@ -287,7 +353,6 @@ struct ib_ucm_apr_event_resp { }; struct ib_ucm_sidr_req_event_resp { - __u32 listen_id; /* device */ /* port */ __u16 pkey; @@ -307,6 +372,7 @@ struct ib_ucm_sidr_rep_event_resp { #define IB_UCM_PRES_ALTERNATE 0x08 struct ib_ucm_event_resp { + __u64 uid; __u32 id; __u32 event; __u32 present; -- cgit v1.2.3 From 507d37cf269ebbd1b32bcc435fe577e411f73151 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Fri, 9 Sep 2005 02:30:07 -0300 Subject: [CCID] Only call the HC insert_options methods when requested Signed-off-by: Arnaldo Carvalho de Melo --- include/linux/dccp.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/dccp.h b/include/linux/dccp.h index 007c290f74d4..5e0af0d08a93 100644 --- a/include/linux/dccp.h +++ b/include/linux/dccp.h @@ -433,6 +433,8 @@ struct dccp_sock { struct ccid *dccps_hc_tx_ccid; struct dccp_options_received dccps_options_received; enum dccp_role dccps_role:2; + __u8 dccps_hc_rx_insert_options:1; + __u8 dccps_hc_tx_insert_options:1; }; static inline struct dccp_sock *dccp_sk(const struct sock *sk) -- cgit v1.2.3 From b0e567806d16586629468c824dfb2e71155df7da Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Fri, 9 Sep 2005 02:38:35 -0300 Subject: [DCCP] Introduce dccp_timestamp To start the timestamps with 0.0ms, easing the integer maths in the CCIDs, this probably will be reworked to use the to be introduced struct timeval_offset infrastructure out of skb_get_timestamp, etc. Signed-off-by: Arnaldo Carvalho de Melo --- include/linux/dccp.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/dccp.h b/include/linux/dccp.h index 5e0af0d08a93..8bf4bacb5051 100644 --- a/include/linux/dccp.h +++ b/include/linux/dccp.h @@ -432,6 +432,7 @@ struct dccp_sock { struct ccid *dccps_hc_rx_ccid; struct ccid *dccps_hc_tx_ccid; struct dccp_options_received dccps_options_received; + struct timeval dccps_epoch; enum dccp_role dccps_role:2; __u8 dccps_hc_rx_insert_options:1; __u8 dccps_hc_tx_insert_options:1; -- cgit v1.2.3 From 9c2c389307c03a35672c80725ccf7968656d87ef Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 9 Sep 2005 11:12:51 +0100 Subject: [ARM] Add memory type based allocation syscalls Add syscall numbers and syscall table entries for mbind, set_mempolicy and get_mempolicy. Signed-off-by: Russell King --- include/asm-arm/unistd.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include') diff --git a/include/asm-arm/unistd.h b/include/asm-arm/unistd.h index 278de61224d1..c49df635a80f 100644 --- a/include/asm-arm/unistd.h +++ b/include/asm-arm/unistd.h @@ -355,6 +355,9 @@ #define __NR_inotify_init (__NR_SYSCALL_BASE+316) #define __NR_inotify_add_watch (__NR_SYSCALL_BASE+317) #define __NR_inotify_rm_watch (__NR_SYSCALL_BASE+318) +#define __NR_mbind (__NR_SYSCALL_BASE+319) +#define __NR_get_mempolicy (__NR_SYSCALL_BASE+320) +#define __NR_set_mempolicy (__NR_SYSCALL_BASE+321) /* * The following SWIs are ARM private. -- cgit v1.2.3 From 86feeaa8120bb1b0ab21efed49e9754039395ef1 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Fri, 9 Sep 2005 19:28:28 +0200 Subject: kbuild: full dependency check on asm-offsets.h Building asm-offsets.h has been moved to a seperate Kbuild file located in the top-level directory. This allow us to share the functionality across the architectures. The old rules in architecture specific Makefiles will die in subsequent patches. Furhtermore the usual kbuild dependency tracking is now used when deciding to rebuild asm-offsets.s. So we no longer risk to fail a rebuild caused by asm-offsets.c dependencies being touched. With this common rule-set we now force the same name across all architectures. Following patches will fix the rest. Signed-off-by: Sam Ravnborg --- include/asm-i386/thread_info.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/asm-i386/thread_info.h b/include/asm-i386/thread_info.h index e2cb9fa6f563..8fbf791651bf 100644 --- a/include/asm-i386/thread_info.h +++ b/include/asm-i386/thread_info.h @@ -48,7 +48,7 @@ struct thread_info { #else /* !__ASSEMBLY__ */ -#include +#include #endif -- cgit v1.2.3 From 144a50ea5e1487b8b8e722289b4177713354448a Mon Sep 17 00:00:00 2001 From: Dave Jones Date: Tue, 9 Aug 2005 00:20:10 -0400 Subject: [PATCH] must_check attributes for PCI layer. Self explanatory really. Some newer gcc's print a warning if a function is used and we don't check its result. We do this for a bunch of things in the kernel already, this extends that to the PCI layer. Based on a patch originally from Arjan van de Ven. Signed-off-by: Dave Jones Signed-off-by: Arjan van de Ven Signed-off-by: Greg Kroah-Hartman --- include/linux/pci.h | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) (limited to 'include') diff --git a/include/linux/pci.h b/include/linux/pci.h index 6caaba0af469..609499356e07 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -376,32 +376,32 @@ static inline int pci_write_config_dword(struct pci_dev *dev, int where, u32 val return pci_bus_write_config_dword (dev->bus, dev->devfn, where, val); } -int pci_enable_device(struct pci_dev *dev); -int pci_enable_device_bars(struct pci_dev *dev, int mask); +int __must_check pci_enable_device(struct pci_dev *dev); +int __must_check pci_enable_device_bars(struct pci_dev *dev, int mask); void pci_disable_device(struct pci_dev *dev); void pci_set_master(struct pci_dev *dev); #define HAVE_PCI_SET_MWI -int pci_set_mwi(struct pci_dev *dev); +int __must_check pci_set_mwi(struct pci_dev *dev); void pci_clear_mwi(struct pci_dev *dev); void pci_intx(struct pci_dev *dev, int enable); -int pci_set_dma_mask(struct pci_dev *dev, u64 mask); -int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask); +int __must_check pci_set_dma_mask(struct pci_dev *dev, u64 mask); +int __must_check pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask); void pci_update_resource(struct pci_dev *dev, struct resource *res, int resno); int pci_assign_resource(struct pci_dev *dev, int i); void pci_restore_bars(struct pci_dev *dev); /* ROM control related routines */ -void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size); -void __iomem *pci_map_rom_copy(struct pci_dev *pdev, size_t *size); +void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size); +void __iomem __must_check *pci_map_rom_copy(struct pci_dev *pdev, size_t *size); void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom); void pci_remove_rom(struct pci_dev *pdev); /* Power management related routines */ int pci_save_state(struct pci_dev *dev); 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); -int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable); +int __must_check pci_set_power_state(struct pci_dev *dev, pci_power_t state); +pci_power_t __must_check pci_choose_state(struct pci_dev *dev, pm_message_t state); +int __must_check pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable); /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ void pci_bus_assign_resources(struct pci_bus *bus); -- cgit v1.2.3 From 47003497dd819b10874a2291e54df7dc5cf8be57 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Fri, 9 Sep 2005 20:35:55 +0200 Subject: kbuild: arm26,sparc use generic asm-offset support Rename all includes to use asm-offsets.h to match generic name Signed-off-by: Sam Ravnborg --- include/asm-sparc/ptrace.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/asm-sparc/ptrace.h b/include/asm-sparc/ptrace.h index dd9d94d7e0ae..a8ecb2d6977a 100644 --- a/include/asm-sparc/ptrace.h +++ b/include/asm-sparc/ptrace.h @@ -73,11 +73,11 @@ extern void show_regs(struct pt_regs *); #endif /* - * The asm_offsets.h is a generated file, so we cannot include it. + * The asm-offsets.h is a generated file, so we cannot include it. * It may be OK for glibc headers, but it's utterly pointless for C code. * The assembly code using those offsets has to include it explicitly. */ -/* #include */ +/* #include */ /* These are for pt_regs. */ #define PT_PSR 0x0 -- cgit v1.2.3 From 0013a85454c281faaf064ccb576e373a2881aac8 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Fri, 9 Sep 2005 20:57:26 +0200 Subject: kbuild: m68k,parisc,ppc,ppc64,s390,xtensa use generic asm-offsets.h support Delete obsoleted parts form arch makefiles and rename to asm-offsets.h Signed-off-by: Sam Ravnborg --- include/asm-ia64/ptrace.h | 2 +- include/asm-ia64/thread_info.h | 2 +- include/asm-parisc/assembly.h | 2 +- include/asm-xtensa/ptrace.h | 2 +- include/asm-xtensa/uaccess.h | 2 +- 5 files changed, 5 insertions(+), 5 deletions(-) (limited to 'include') diff --git a/include/asm-ia64/ptrace.h b/include/asm-ia64/ptrace.h index 0bef19538406..c8766def9ee6 100644 --- a/include/asm-ia64/ptrace.h +++ b/include/asm-ia64/ptrace.h @@ -57,7 +57,7 @@ #include #include -#include +#include /* * Base-2 logarithm of number of pages to allocate per task structure diff --git a/include/asm-ia64/thread_info.h b/include/asm-ia64/thread_info.h index 7dc8951708a3..b2c79f0694f8 100644 --- a/include/asm-ia64/thread_info.h +++ b/include/asm-ia64/thread_info.h @@ -5,7 +5,7 @@ #ifndef _ASM_IA64_THREAD_INFO_H #define _ASM_IA64_THREAD_INFO_H -#include +#include #include #include diff --git a/include/asm-parisc/assembly.h b/include/asm-parisc/assembly.h index cbc286f49b36..30b023411fef 100644 --- a/include/asm-parisc/assembly.h +++ b/include/asm-parisc/assembly.h @@ -63,7 +63,7 @@ .level 2.0w #endif -#include +#include #include #include diff --git a/include/asm-xtensa/ptrace.h b/include/asm-xtensa/ptrace.h index 2848a5ff8349..aa4fd7fb3ce7 100644 --- a/include/asm-xtensa/ptrace.h +++ b/include/asm-xtensa/ptrace.h @@ -127,7 +127,7 @@ extern void show_regs(struct pt_regs *); #else /* __ASSEMBLY__ */ #ifdef __KERNEL__ -# include +# include #define PT_REGS_OFFSET (KERNEL_STACK_SIZE - PT_USER_SIZE) #endif diff --git a/include/asm-xtensa/uaccess.h b/include/asm-xtensa/uaccess.h index fc268ac923c0..06a22b83ba17 100644 --- a/include/asm-xtensa/uaccess.h +++ b/include/asm-xtensa/uaccess.h @@ -25,7 +25,7 @@ #define _ASMLANGUAGE #include -#include +#include #include /* -- cgit v1.2.3 From e2d5df935d8a82cb7a2c50726628fa928aa89b9b Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Fri, 9 Sep 2005 21:28:48 +0200 Subject: kbuild: alpha,x86_64 use generic asm-offsets.h support Delete obsolete stuff from arch makefiles Rename .h file to asm-offsets.h Signed-off-by: Sam Ravnborg --- include/asm-x86_64/current.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/asm-x86_64/current.h b/include/asm-x86_64/current.h index 7db560ee6f70..bc8adecee66d 100644 --- a/include/asm-x86_64/current.h +++ b/include/asm-x86_64/current.h @@ -17,7 +17,7 @@ static inline struct task_struct *get_current(void) #else #ifndef ASM_OFFSET_H -#include +#include #endif #define GET_CURRENT(reg) movq %gs:(pda_pcurrent),reg -- cgit v1.2.3 From 048eb582f3f89737d4a29668de9935e6feea7c36 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Fri, 9 Sep 2005 22:32:31 +0200 Subject: kbuild: mips use generic asm-offsets.h support Removed obsolete stuff from arch makefile. mips had a special rule for generating asm-offsets.h so preserved it using an architecture specific hook in top-level Kbuild file. Renamed .h file to asm-offsets.h Signed-off-by: Sam Ravnborg --- include/asm-mips/asmmacro-32.h | 2 +- include/asm-mips/asmmacro-64.h | 2 +- include/asm-mips/sim.h | 2 +- include/asm-mips/stackframe.h | 2 +- 4 files changed, 4 insertions(+), 4 deletions(-) (limited to 'include') diff --git a/include/asm-mips/asmmacro-32.h b/include/asm-mips/asmmacro-32.h index ac8823df2554..11daf5ceb7b4 100644 --- a/include/asm-mips/asmmacro-32.h +++ b/include/asm-mips/asmmacro-32.h @@ -7,7 +7,7 @@ #ifndef _ASM_ASMMACRO_32_H #define _ASM_ASMMACRO_32_H -#include +#include #include #include #include diff --git a/include/asm-mips/asmmacro-64.h b/include/asm-mips/asmmacro-64.h index bbed35511f5a..559c355b9b86 100644 --- a/include/asm-mips/asmmacro-64.h +++ b/include/asm-mips/asmmacro-64.h @@ -8,7 +8,7 @@ #ifndef _ASM_ASMMACRO_64_H #define _ASM_ASMMACRO_64_H -#include +#include #include #include #include diff --git a/include/asm-mips/sim.h b/include/asm-mips/sim.h index 3ccfe09fa744..9c2af1b00e19 100644 --- a/include/asm-mips/sim.h +++ b/include/asm-mips/sim.h @@ -11,7 +11,7 @@ #include -#include +#include #define __str2(x) #x #define __str(x) __str2(x) diff --git a/include/asm-mips/stackframe.h b/include/asm-mips/stackframe.h index fb42f99f8527..7b5e64600bc8 100644 --- a/include/asm-mips/stackframe.h +++ b/include/asm-mips/stackframe.h @@ -15,7 +15,7 @@ #include #include -#include +#include .macro SAVE_AT .set push -- cgit v1.2.3 From 1325cc79163058739b70bed9860fccbecac6236b Mon Sep 17 00:00:00 2001 From: Hal Rosenstock Date: Fri, 9 Sep 2005 13:45:51 -0700 Subject: [PATCH] IB: Define more SA methods ib_sa.h: Define more SA methods (initially for madeye decode) Signed-off-by: Hal Rosenstock Signed-off-by: Roland Dreier --- include/rdma/ib_sa.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/rdma/ib_sa.h b/include/rdma/ib_sa.h index c022edfc49da..0f4f5ec85e82 100644 --- a/include/rdma/ib_sa.h +++ b/include/rdma/ib_sa.h @@ -46,7 +46,11 @@ enum { IB_SA_METHOD_GET_TABLE = 0x12, IB_SA_METHOD_GET_TABLE_RESP = 0x92, - IB_SA_METHOD_DELETE = 0x15 + IB_SA_METHOD_DELETE = 0x15, + IB_SA_METHOD_DELETE_RESP = 0x95, + IB_SA_METHOD_GET_MULTI = 0x14, + IB_SA_METHOD_GET_MULTI_RESP = 0x94, + IB_SA_METHOD_GET_TRACE_TBL = 0x13 }; enum ib_sa_selector { -- cgit v1.2.3 From abda24528ac3045511fb59291a2d6ccbddf30eda Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Fri, 9 Sep 2005 13:01:23 -0700 Subject: [PATCH] i386: CONFIG_ACPI_SRAT typo fix Fix a typo involving CONFIG_ACPI_SRAT. Signed-off-by: Magnus Damm Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-i386/mmzone.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/asm-i386/mmzone.h b/include/asm-i386/mmzone.h index 516421300ea2..348fe3a4879d 100644 --- a/include/asm-i386/mmzone.h +++ b/include/asm-i386/mmzone.h @@ -29,7 +29,7 @@ static inline void get_memcfg_numa(void) #ifdef CONFIG_X86_NUMAQ if (get_memcfg_numaq()) return; -#elif CONFIG_ACPI_SRAT +#elif defined(CONFIG_ACPI_SRAT) if (get_memcfg_from_srat()) return; #endif -- cgit v1.2.3 From 5e41ff9e0650f327a6c819841fa412da95d57319 Mon Sep 17 00:00:00 2001 From: Stephen Smalley Date: Fri, 9 Sep 2005 13:01:35 -0700 Subject: [PATCH] security: enable atomic inode security labeling The following patch set enables atomic security labeling of newly created inodes by altering the fs code to invoke a new LSM hook to obtain the security attribute to apply to a newly created inode and to set up the incore inode security state during the inode creation transaction. This parallels the existing processing for setting ACLs on newly created inodes. Otherwise, it is possible for new inodes to be accessed by another thread via the dcache prior to complete security setup (presently handled by the post_create/mkdir/... LSM hooks in the VFS) and a newly created inode may be left unlabeled on the disk in the event of a crash. SELinux presently works around the issue by ensuring that the incore inode security label is initialized to a special SID that is inaccessible to unprivileged processes (in accordance with policy), thereby preventing inappropriate access but potentially causing false denials on legitimate accesses. A simple test program demonstrates such false denials on SELinux, and the patch solves the problem. Similar such false denials have been encountered in real applications. This patch defines a new inode_init_security LSM hook to obtain the security attribute to apply to a newly created inode and to set up the incore inode security state for it, and adds a corresponding hook function implementation to SELinux. Signed-off-by: Stephen Smalley Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/security.h | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) (limited to 'include') diff --git a/include/linux/security.h b/include/linux/security.h index 7aab6ab7c57f..d4f3b7a94ea6 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -250,6 +250,25 @@ struct swap_info_struct; * @inode contains the inode structure. * Deallocate the inode security structure and set @inode->i_security to * NULL. + * @inode_init_security: + * Obtain the security attribute name suffix and value to set on a newly + * created inode and set up the incore security field for the new inode. + * This hook is called by the fs code as part of the inode creation + * transaction and provides for atomic labeling of the inode, unlike + * the post_create/mkdir/... hooks called by the VFS. The hook function + * is expected to allocate the name and value via kmalloc, with the caller + * being responsible for calling kfree after using them. + * If the security module does not use security attributes or does + * not wish to put a security attribute on this particular inode, + * then it should return -EOPNOTSUPP to skip this processing. + * @inode contains the inode structure of the newly created inode. + * @dir contains the inode structure of the parent directory. + * @name will be set to the allocated name suffix (e.g. selinux). + * @value will be set to the allocated attribute value. + * @len will be set to the length of the value. + * Returns 0 if @name and @value have been successfully set, + * -EOPNOTSUPP if no security attribute is needed, or + * -ENOMEM on memory allocation failure. * @inode_create: * Check permission to create a regular file. * @dir contains inode structure of the parent of the new file. @@ -1080,6 +1099,8 @@ struct security_operations { int (*inode_alloc_security) (struct inode *inode); void (*inode_free_security) (struct inode *inode); + int (*inode_init_security) (struct inode *inode, struct inode *dir, + char **name, void **value, size_t *len); int (*inode_create) (struct inode *dir, struct dentry *dentry, int mode); void (*inode_post_create) (struct inode *dir, @@ -1442,6 +1463,17 @@ static inline void security_inode_free (struct inode *inode) return; security_ops->inode_free_security (inode); } + +static inline int security_inode_init_security (struct inode *inode, + struct inode *dir, + char **name, + void **value, + size_t *len) +{ + if (unlikely (IS_PRIVATE (inode))) + return -EOPNOTSUPP; + return security_ops->inode_init_security (inode, dir, name, value, len); +} static inline int security_inode_create (struct inode *dir, struct dentry *dentry, @@ -2171,6 +2203,15 @@ static inline int security_inode_alloc (struct inode *inode) static inline void security_inode_free (struct inode *inode) { } + +static inline int security_inode_init_security (struct inode *inode, + struct inode *dir, + char **name, + void **value, + size_t *len) +{ + return -EOPNOTSUPP; +} static inline int security_inode_create (struct inode *dir, struct dentry *dentry, -- cgit v1.2.3 From a74574aafea3a63add3251047601611111f44562 Mon Sep 17 00:00:00 2001 From: Stephen Smalley Date: Fri, 9 Sep 2005 13:01:44 -0700 Subject: [PATCH] Remove security_inode_post_create/mkdir/symlink/mknod hooks This patch removes the inode_post_create/mkdir/mknod/symlink LSM hooks as they are obsoleted by the new inode_init_security hook that enables atomic inode security labeling. If anyone sees any reason to retain these hooks, please speak now. Also, is anyone using the post_rename/link hooks; if not, those could also be removed. Signed-off-by: Stephen Smalley Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/security.h | 90 ------------------------------------------------ 1 file changed, 90 deletions(-) (limited to 'include') diff --git a/include/linux/security.h b/include/linux/security.h index d4f3b7a94ea6..875225bf8986 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -275,12 +275,6 @@ struct swap_info_struct; * @dentry contains the dentry structure for the file to be created. * @mode contains the file mode of the file to be created. * Return 0 if permission is granted. - * @inode_post_create: - * Set the security attributes on a newly created regular file. This hook - * is called after a file has been successfully created. - * @dir contains the inode structure of the parent directory of the new file. - * @dentry contains the the dentry structure for the newly created file. - * @mode contains the file mode. * @inode_link: * Check permission before creating a new hard link to a file. * @old_dentry contains the dentry structure for an existing link to the file. @@ -303,13 +297,6 @@ struct swap_info_struct; * @dentry contains the dentry structure of the symbolic link. * @old_name contains the pathname of file. * Return 0 if permission is granted. - * @inode_post_symlink: - * @dir contains the inode structure of the parent directory of the new link. - * @dentry contains the dentry structure of new symbolic link. - * @old_name contains the pathname of file. - * Set security attributes for a newly created symbolic link. Note that - * @dentry->d_inode may be NULL, since the filesystem might not - * instantiate the dentry (e.g. NFS). * @inode_mkdir: * Check permissions to create a new directory in the existing directory * associated with inode strcture @dir. @@ -317,11 +304,6 @@ struct swap_info_struct; * @dentry contains the dentry structure of new directory. * @mode contains the mode of new directory. * Return 0 if permission is granted. - * @inode_post_mkdir: - * Set security attributes on a newly created directory. - * @dir contains the inode structure of parent of the directory to be created. - * @dentry contains the dentry structure of new directory. - * @mode contains the mode of new directory. * @inode_rmdir: * Check the permission to remove a directory. * @dir contains the inode structure of parent of the directory to be removed. @@ -337,13 +319,6 @@ struct swap_info_struct; * @mode contains the mode of the new file. * @dev contains the the device number. * Return 0 if permission is granted. - * @inode_post_mknod: - * Set security attributes on a newly created special file (or socket or - * fifo file created via the mknod system call). - * @dir contains the inode structure of parent of the new node. - * @dentry contains the dentry structure of the new node. - * @mode contains the mode of the new node. - * @dev contains the the device number. * @inode_rename: * Check for permission to rename a file or directory. * @old_dir contains the inode structure for parent of the old link. @@ -1103,8 +1078,6 @@ struct security_operations { char **name, void **value, size_t *len); int (*inode_create) (struct inode *dir, struct dentry *dentry, int mode); - void (*inode_post_create) (struct inode *dir, - struct dentry *dentry, int mode); int (*inode_link) (struct dentry *old_dentry, struct inode *dir, struct dentry *new_dentry); void (*inode_post_link) (struct dentry *old_dentry, @@ -1112,17 +1085,10 @@ struct security_operations { int (*inode_unlink) (struct inode *dir, struct dentry *dentry); int (*inode_symlink) (struct inode *dir, struct dentry *dentry, const char *old_name); - void (*inode_post_symlink) (struct inode *dir, - struct dentry *dentry, - const char *old_name); int (*inode_mkdir) (struct inode *dir, struct dentry *dentry, int mode); - void (*inode_post_mkdir) (struct inode *dir, struct dentry *dentry, - int mode); int (*inode_rmdir) (struct inode *dir, struct dentry *dentry); int (*inode_mknod) (struct inode *dir, struct dentry *dentry, int mode, dev_t dev); - void (*inode_post_mknod) (struct inode *dir, struct dentry *dentry, - int mode, dev_t dev); int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry); void (*inode_post_rename) (struct inode *old_dir, @@ -1484,15 +1450,6 @@ static inline int security_inode_create (struct inode *dir, return security_ops->inode_create (dir, dentry, mode); } -static inline void security_inode_post_create (struct inode *dir, - struct dentry *dentry, - int mode) -{ - if (dentry->d_inode && unlikely (IS_PRIVATE (dentry->d_inode))) - return; - security_ops->inode_post_create (dir, dentry, mode); -} - static inline int security_inode_link (struct dentry *old_dentry, struct inode *dir, struct dentry *new_dentry) @@ -1528,15 +1485,6 @@ static inline int security_inode_symlink (struct inode *dir, return security_ops->inode_symlink (dir, dentry, old_name); } -static inline void security_inode_post_symlink (struct inode *dir, - struct dentry *dentry, - const char *old_name) -{ - if (dentry->d_inode && unlikely (IS_PRIVATE (dentry->d_inode))) - return; - security_ops->inode_post_symlink (dir, dentry, old_name); -} - static inline int security_inode_mkdir (struct inode *dir, struct dentry *dentry, int mode) @@ -1546,15 +1494,6 @@ static inline int security_inode_mkdir (struct inode *dir, return security_ops->inode_mkdir (dir, dentry, mode); } -static inline void security_inode_post_mkdir (struct inode *dir, - struct dentry *dentry, - int mode) -{ - if (dentry->d_inode && unlikely (IS_PRIVATE (dentry->d_inode))) - return; - security_ops->inode_post_mkdir (dir, dentry, mode); -} - static inline int security_inode_rmdir (struct inode *dir, struct dentry *dentry) { @@ -1572,15 +1511,6 @@ static inline int security_inode_mknod (struct inode *dir, return security_ops->inode_mknod (dir, dentry, mode, dev); } -static inline void security_inode_post_mknod (struct inode *dir, - struct dentry *dentry, - int mode, dev_t dev) -{ - if (dentry->d_inode && unlikely (IS_PRIVATE (dentry->d_inode))) - return; - security_ops->inode_post_mknod (dir, dentry, mode, dev); -} - static inline int security_inode_rename (struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, @@ -2220,11 +2150,6 @@ static inline int security_inode_create (struct inode *dir, return 0; } -static inline void security_inode_post_create (struct inode *dir, - struct dentry *dentry, - int mode) -{ } - static inline int security_inode_link (struct dentry *old_dentry, struct inode *dir, struct dentry *new_dentry) @@ -2250,11 +2175,6 @@ static inline int security_inode_symlink (struct inode *dir, return 0; } -static inline void security_inode_post_symlink (struct inode *dir, - struct dentry *dentry, - const char *old_name) -{ } - static inline int security_inode_mkdir (struct inode *dir, struct dentry *dentry, int mode) @@ -2262,11 +2182,6 @@ static inline int security_inode_mkdir (struct inode *dir, return 0; } -static inline void security_inode_post_mkdir (struct inode *dir, - struct dentry *dentry, - int mode) -{ } - static inline int security_inode_rmdir (struct inode *dir, struct dentry *dentry) { @@ -2280,11 +2195,6 @@ static inline int security_inode_mknod (struct inode *dir, return 0; } -static inline void security_inode_post_mknod (struct inode *dir, - struct dentry *dentry, - int mode, dev_t dev) -{ } - static inline int security_inode_rename (struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, -- cgit v1.2.3 From e31e14ec356f36b131576be5bc31d8fef7e95483 Mon Sep 17 00:00:00 2001 From: Stephen Smalley Date: Fri, 9 Sep 2005 13:01:45 -0700 Subject: [PATCH] remove the inode_post_link and inode_post_rename LSM hooks This patch removes the inode_post_link and inode_post_rename LSM hooks as they are unused (and likely useless). Signed-off-by: Stephen Smalley Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/security.h | 49 ------------------------------------------------ 1 file changed, 49 deletions(-) (limited to 'include') diff --git a/include/linux/security.h b/include/linux/security.h index 875225bf8986..55b02e1c73f4 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -281,11 +281,6 @@ struct swap_info_struct; * @dir contains the inode structure of the parent directory of the new link. * @new_dentry contains the dentry structure for the new link. * Return 0 if permission is granted. - * @inode_post_link: - * Set security attributes for a new hard link to a file. - * @old_dentry contains the dentry structure for the existing link. - * @dir contains the inode structure of the parent directory of the new file. - * @new_dentry contains the dentry structure for the new file link. * @inode_unlink: * Check the permission to remove a hard link to a file. * @dir contains the inode structure of parent directory of the file. @@ -326,12 +321,6 @@ struct swap_info_struct; * @new_dir contains the inode structure for parent of the new link. * @new_dentry contains the dentry structure of the new link. * Return 0 if permission is granted. - * @inode_post_rename: - * Set security attributes on a renamed file or directory. - * @old_dir contains the inode structure for parent of the old link. - * @old_dentry contains the dentry structure of the old link. - * @new_dir contains the inode structure for parent of the new link. - * @new_dentry contains the dentry structure of the new link. * @inode_readlink: * Check the permission to read the symbolic link. * @dentry contains the dentry structure for the file link. @@ -1080,8 +1069,6 @@ struct security_operations { struct dentry *dentry, int mode); int (*inode_link) (struct dentry *old_dentry, struct inode *dir, struct dentry *new_dentry); - void (*inode_post_link) (struct dentry *old_dentry, - struct inode *dir, struct dentry *new_dentry); int (*inode_unlink) (struct inode *dir, struct dentry *dentry); int (*inode_symlink) (struct inode *dir, struct dentry *dentry, const char *old_name); @@ -1091,10 +1078,6 @@ struct security_operations { int mode, dev_t dev); int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry); - void (*inode_post_rename) (struct inode *old_dir, - struct dentry *old_dentry, - struct inode *new_dir, - struct dentry *new_dentry); int (*inode_readlink) (struct dentry *dentry); int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd); int (*inode_permission) (struct inode *inode, int mask, struct nameidata *nd); @@ -1459,15 +1442,6 @@ static inline int security_inode_link (struct dentry *old_dentry, return security_ops->inode_link (old_dentry, dir, new_dentry); } -static inline void security_inode_post_link (struct dentry *old_dentry, - struct inode *dir, - struct dentry *new_dentry) -{ - if (new_dentry->d_inode && unlikely (IS_PRIVATE (new_dentry->d_inode))) - return; - security_ops->inode_post_link (old_dentry, dir, new_dentry); -} - static inline int security_inode_unlink (struct inode *dir, struct dentry *dentry) { @@ -1523,18 +1497,6 @@ static inline int security_inode_rename (struct inode *old_dir, new_dir, new_dentry); } -static inline void security_inode_post_rename (struct inode *old_dir, - struct dentry *old_dentry, - struct inode *new_dir, - struct dentry *new_dentry) -{ - if (unlikely (IS_PRIVATE (old_dentry->d_inode) || - (new_dentry->d_inode && IS_PRIVATE (new_dentry->d_inode)))) - return; - security_ops->inode_post_rename (old_dir, old_dentry, - new_dir, new_dentry); -} - static inline int security_inode_readlink (struct dentry *dentry) { if (unlikely (IS_PRIVATE (dentry->d_inode))) @@ -2157,11 +2119,6 @@ static inline int security_inode_link (struct dentry *old_dentry, return 0; } -static inline void security_inode_post_link (struct dentry *old_dentry, - struct inode *dir, - struct dentry *new_dentry) -{ } - static inline int security_inode_unlink (struct inode *dir, struct dentry *dentry) { @@ -2203,12 +2160,6 @@ static inline int security_inode_rename (struct inode *old_dir, return 0; } -static inline void security_inode_post_rename (struct inode *old_dir, - struct dentry *old_dentry, - struct inode *new_dir, - struct dentry *new_dentry) -{ } - static inline int security_inode_readlink (struct dentry *dentry) { return 0; -- cgit v1.2.3 From 95409aaca734700e8dcba9db685b8600b67ba05d Mon Sep 17 00:00:00 2001 From: Tom Rini Date: Fri, 9 Sep 2005 13:01:48 -0700 Subject: [PATCH] ppc32: Kill PVR_440* defines The following patch changes the usages of PVR_440* into strcmp's with the cpu_name field, and removes the defines altogether. The Ebony portion was briefly tested long ago. One benefit of moving from PVR-tests to string tests in general is that not all CPUs can be on and be able to do this type of comparison. See http://patchwork.ozlabs.org/linuxppc/patch?id=1250 for the original thread. Signed-off-by: Tom Rini Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-ppc/reg.h | 6 ------ 1 file changed, 6 deletions(-) (limited to 'include') diff --git a/include/asm-ppc/reg.h b/include/asm-ppc/reg.h index 88b4222154d4..73c33e3ef9c6 100644 --- a/include/asm-ppc/reg.h +++ b/include/asm-ppc/reg.h @@ -366,12 +366,6 @@ #define PVR_STB03XXX 0x40310000 #define PVR_NP405H 0x41410000 #define PVR_NP405L 0x41610000 -#define PVR_440GP_RB 0x40120440 -#define PVR_440GP_RC1 0x40120481 -#define PVR_440GP_RC2 0x40200481 -#define PVR_440GX_RA 0x51b21850 -#define PVR_440GX_RB 0x51b21851 -#define PVR_440GX_RC 0x51b21892 #define PVR_601 0x00010000 #define PVR_602 0x00050000 #define PVR_603 0x00030000 -- cgit v1.2.3 From 4d666d7ada2e14d71d463c85b8b5ef2e2e6723f2 Mon Sep 17 00:00:00 2001 From: Yoichi Yuasa Date: Fri, 9 Sep 2005 13:01:49 -0700 Subject: [PATCH] mips: add TANBAC TB0287 support Add TANBAC TB0287 support. Signed-off-by: Yoichi Yuasa Cc: Ralf Baechle Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-mips/vr41xx/tb0287.h | 43 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 include/asm-mips/vr41xx/tb0287.h (limited to 'include') diff --git a/include/asm-mips/vr41xx/tb0287.h b/include/asm-mips/vr41xx/tb0287.h new file mode 100644 index 000000000000..dd9832313afe --- /dev/null +++ b/include/asm-mips/vr41xx/tb0287.h @@ -0,0 +1,43 @@ +/* + * tb0287.h, Include file for TANBAC TB0287 mini-ITX board. + * + * Copyright (C) 2005 Media Lab Inc. + * + * This code is largely based on tb0219.h. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#ifndef __TANBAC_TB0287_H +#define __TANBAC_TB0287_H + +#include + +/* + * General-Purpose I/O Pin Number + */ +#define TB0287_PCI_SLOT_PIN 2 +#define TB0287_SM501_PIN 3 +#define TB0287_SIL680A_PIN 8 +#define TB0287_RTL8110_PIN 13 + +/* + * Interrupt Number + */ +#define TB0287_PCI_SLOT_IRQ GIU_IRQ(TB0287_PCI_SLOT_PIN) +#define TB0287_SM501_IRQ GIU_IRQ(TB0287_SM501_PIN) +#define TB0287_SIL680A_IRQ GIU_IRQ(TB0287_SIL680A_PIN) +#define TB0287_RTL8110_IRQ GIU_IRQ(TB0287_RTL8110_PIN) + +#endif /* __TANBAC_TB0287_H */ -- cgit v1.2.3 From 383f2835eb9afb723af71850037b2f074ac9db60 Mon Sep 17 00:00:00 2001 From: "Chen, Kenneth W" Date: Fri, 9 Sep 2005 13:02:02 -0700 Subject: [PATCH] Prefetch kernel stacks to speed up context switch For architecture like ia64, the switch stack structure is fairly large (currently 528 bytes). For context switch intensive application, we found that significant amount of cache misses occurs in switch_to() function. The following patch adds a hook in the schedule() function to prefetch switch stack structure as soon as 'next' task is determined. This allows maximum overlap in prefetch cache lines for that structure. Signed-off-by: Ken Chen Cc: Ingo Molnar Cc: "Luck, Tony" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-ia64/system.h | 1 + include/linux/sched.h | 5 +++++ 2 files changed, 6 insertions(+) (limited to 'include') diff --git a/include/asm-ia64/system.h b/include/asm-ia64/system.h index 33256db4a7cf..635235fa1e32 100644 --- a/include/asm-ia64/system.h +++ b/include/asm-ia64/system.h @@ -275,6 +275,7 @@ extern void ia64_load_extra (struct task_struct *task); */ #define __ARCH_WANT_UNLOCKED_CTXSW +#define ARCH_HAS_PREFETCH_SWITCH_STACK #define ia64_platform_is(x) (strcmp(x, platform_name) == 0) void cpu_idle_wait(void); diff --git a/include/linux/sched.h b/include/linux/sched.h index ea1b5f32ec5c..c551e6a1447e 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -604,6 +604,11 @@ extern int groups_search(struct group_info *group_info, gid_t grp); #define GROUP_AT(gi, i) \ ((gi)->blocks[(i)/NGROUPS_PER_BLOCK][(i)%NGROUPS_PER_BLOCK]) +#ifdef ARCH_HAS_PREFETCH_SWITCH_STACK +extern void prefetch_stack(struct task_struct*); +#else +static inline void prefetch_stack(struct task_struct *t) { } +#endif struct audit_context; /* See audit.c */ struct mempolicy; -- cgit v1.2.3 From fac92becdaecff64dd91daab0292c5131de92f0d Mon Sep 17 00:00:00 2001 From: Andrew Stribblehill Date: Fri, 9 Sep 2005 13:02:04 -0700 Subject: [PATCH] bfs: fix endianness, signedness; add trivial bugfix * Makes BFS code endianness-clean. * Fixes some signedness warnings. * Fixes a problem in fs/bfs/inode.c:164 where inodes not synced to disk don't get fully marked as clean. Here's how to reproduce it: # mount -o loop -t bfs /bfs.img /mnt # df -i /mnt Filesystem Inodes IUsed IFree IUse% Mounted on /bfs.img 48 1 47 3% /mnt # df -k /mnt Filesystem 1K-blocks Used Available Use% Mounted on /bfs.img 512 5 508 1% /mnt # cp 60k-archive.zip /mnt/mt.zip # df -k /mnt Filesystem 1K-blocks Used Available Use% Mounted on /bfs.img 512 65 447 13% /mnt # df -i /mnt Filesystem Inodes IUsed IFree IUse% Mounted on /bfs.img 48 2 46 5% /mnt # rm /mnt/mt.zip # echo $? 0 [If the unlink happens before the buffers flush, the following happens:] # df -i /mnt Filesystem Inodes IUsed IFree IUse% Mounted on /bfs.img 48 2 46 5% /mnt # df -k /mnt Filesystem 1K-blocks Used Available Use% Mounted on /bfs.img 512 65 447 13% /mnt fs/bfs/bfs.h | 1 Signed-off-by: Andrew Stribblehill Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/bfs_fs.h | 23 ++++++++++++----------- 1 file changed, 12 insertions(+), 11 deletions(-) (limited to 'include') diff --git a/include/linux/bfs_fs.h b/include/linux/bfs_fs.h index f7f0913cd110..c1237aa92e38 100644 --- a/include/linux/bfs_fs.h +++ b/include/linux/bfs_fs.h @@ -14,8 +14,9 @@ #define BFS_INODES_PER_BLOCK 8 /* SVR4 vnode type values (bfs_inode->i_vtype) */ -#define BFS_VDIR 2 -#define BFS_VREG 1 +#define BFS_VDIR 2L +#define BFS_VREG 1L + /* BFS inode layout on disk */ struct bfs_inode { @@ -58,22 +59,22 @@ struct bfs_super_block { __u32 s_padding[118]; }; -#define BFS_NZFILESIZE(ip) \ - (((ip)->i_eoffset + 1) - (ip)->i_sblock * BFS_BSIZE) - -#define BFS_FILESIZE(ip) \ - ((ip)->i_sblock == 0 ? 0 : BFS_NZFILESIZE(ip)) - -#define BFS_FILEBLOCKS(ip) \ - ((ip)->i_sblock == 0 ? 0 : ((ip)->i_eblock + 1) - (ip)->i_sblock) #define BFS_OFF2INO(offset) \ ((((offset) - BFS_BSIZE) / sizeof(struct bfs_inode)) + BFS_ROOT_INO) #define BFS_INO2OFF(ino) \ ((__u32)(((ino) - BFS_ROOT_INO) * sizeof(struct bfs_inode)) + BFS_BSIZE) +#define BFS_NZFILESIZE(ip) \ + ((cpu_to_le32((ip)->i_eoffset) + 1) - cpu_to_le32((ip)->i_sblock) * BFS_BSIZE) + +#define BFS_FILESIZE(ip) \ + ((ip)->i_sblock == 0 ? 0 : BFS_NZFILESIZE(ip)) +#define BFS_FILEBLOCKS(ip) \ + ((ip)->i_sblock == 0 ? 0 : (cpu_to_le32((ip)->i_eblock) + 1) - cpu_to_le32((ip)->i_sblock)) #define BFS_UNCLEAN(bfs_sb, sb) \ - ((bfs_sb->s_from != -1) && (bfs_sb->s_to != -1) && !(sb->s_flags & MS_RDONLY)) + ((cpu_to_le32(bfs_sb->s_from) != -1) && (cpu_to_le32(bfs_sb->s_to) != -1) && !(sb->s_flags & MS_RDONLY)) + #endif /* _LINUX_BFS_FS_H */ -- cgit v1.2.3 From 24b20ac6e1c80082889b3d6ae08aadda777519e5 Mon Sep 17 00:00:00 2001 From: Kenji Kaneshige Date: Fri, 9 Sep 2005 13:02:11 -0700 Subject: [PATCH] remove unnecessary handle_IRQ_event() prototypes The function prototype for handle_IRQ_event() in a few architctures is not needed because they use GENERIC_HARDIRQ. Signed-off-by: Kenji Kaneshige Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-mips/irq.h | 3 --- include/asm-ppc/irq.h | 4 ---- include/asm-sh/irq.h | 4 ---- include/asm-x86_64/irq.h | 4 ---- 4 files changed, 15 deletions(-) (limited to 'include') diff --git a/include/asm-mips/irq.h b/include/asm-mips/irq.h index b90b11d0b886..3f2470e9e678 100644 --- a/include/asm-mips/irq.h +++ b/include/asm-mips/irq.h @@ -49,7 +49,4 @@ do { \ extern void arch_init_irq(void); -struct irqaction; -int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *); - #endif /* _ASM_IRQ_H */ diff --git a/include/asm-ppc/irq.h b/include/asm-ppc/irq.h index b4b270457edd..55752474d0d9 100644 --- a/include/asm-ppc/irq.h +++ b/include/asm-ppc/irq.h @@ -404,9 +404,5 @@ extern unsigned long ppc_cached_irq_mask[NR_MASK_WORDS]; extern unsigned long ppc_lost_interrupts[NR_MASK_WORDS]; extern atomic_t ppc_n_lost_interrupts; -struct irqaction; -struct pt_regs; -int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *); - #endif /* _ASM_IRQ_H */ #endif /* __KERNEL__ */ diff --git a/include/asm-sh/irq.h b/include/asm-sh/irq.h index 831e52ee45b5..614a8c13b721 100644 --- a/include/asm-sh/irq.h +++ b/include/asm-sh/irq.h @@ -587,10 +587,6 @@ static inline int generic_irq_demux(int irq) #define irq_canonicalize(irq) (irq) #define irq_demux(irq) __irq_demux(sh_mv.mv_irq_demux(irq)) -struct irqaction; -struct pt_regs; -int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *); - #if defined(CONFIG_CPU_SUBTYPE_SH73180) #include #endif diff --git a/include/asm-x86_64/irq.h b/include/asm-x86_64/irq.h index 4482657777bb..fb724ba37ae6 100644 --- a/include/asm-x86_64/irq.h +++ b/include/asm-x86_64/irq.h @@ -48,10 +48,6 @@ static __inline__ int irq_canonicalize(int irq) #define ARCH_HAS_NMI_WATCHDOG /* See include/linux/nmi.h */ #endif -struct irqaction; -struct pt_regs; -int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *); - #ifdef CONFIG_HOTPLUG_CPU #include extern void fixup_irqs(cpumask_t map); -- cgit v1.2.3 From 59f4e7d572980a521b7bdba74ab71b21f5995538 Mon Sep 17 00:00:00 2001 From: Truxton Fulton Date: Fri, 9 Sep 2005 13:02:18 -0700 Subject: [PATCH] fix reboot via keyboard controller reset I have a system (Biostar IDEQ210M mini-pc with a VIA chipset) which will not reboot unless a keyboard is plugged in to it. I have tried all combinations of the kernel "reboot=x,y" flags to no avail. Rebooting by any method will leave the system in a wedged state (at the "Restarting system" message). I finally tracked the problem down to the machine's refusal to fully reboot unless the keyboard controller status register had bit 2 set. This is the "System flag" which when set, indicates successful completion of the keyboard controller self-test (Basic Assurance Test, BAT). I suppose that something is trying to protect against sporadic reboots unless the keyboard controller is in a good state (a keyboard is present), but I need this machine to be headless. I found that setting the system flag (via the command byte) before giving the "pulse reset line" command will allow the reboot to proceed. The patch is simple, and I think it should be fine for everybody whether they have this type of machine or not. This affects the "hard" reboot (as done when the kernel boot flags "reboot=c,h" are used). Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-i386/mach-default/mach_reboot.h | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/asm-i386/mach-default/mach_reboot.h b/include/asm-i386/mach-default/mach_reboot.h index 521e227db679..06ae4d81ba6a 100644 --- a/include/asm-i386/mach-default/mach_reboot.h +++ b/include/asm-i386/mach-default/mach_reboot.h @@ -22,7 +22,15 @@ static inline void mach_reboot(void) for (i = 0; i < 100; i++) { kb_wait(); udelay(50); - outb(0xfe, 0x64); /* pulse reset low */ + outb(0x60, 0x64); /* write Controller Command Byte */ + udelay(50); + kb_wait(); + udelay(50); + outb(0x14, 0x60); /* set "System flag" */ + udelay(50); + kb_wait(); + udelay(50); + outb(0xfe, 0x64); /* pulse reset low */ udelay(50); } } -- cgit v1.2.3 From 34f7373aaec80564cc87b7829e4e2a0e3c20c4b7 Mon Sep 17 00:00:00 2001 From: Olaf Hering Date: Fri, 9 Sep 2005 13:02:20 -0700 Subject: [PATCH] dvb: remove version.h dependencies Remove all #include and all references to LINUX_VERSION_CODE and KERNEL_VERSION. Based on patch by Olaf Hering. Signed-off-by: Olaf Hering Signed-off-by: Johannes Stezenbach Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/media/saa7146.h | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-) (limited to 'include') diff --git a/include/media/saa7146.h b/include/media/saa7146.h index 3dfb8d670eb7..2a897c3a6a9a 100644 --- a/include/media/saa7146.h +++ b/include/media/saa7146.h @@ -1,7 +1,6 @@ #ifndef __SAA7146__ #define __SAA7146__ -#include /* for version macros */ #include /* for module-version */ #include /* for delay-stuff */ #include /* for kmalloc/kfree */ @@ -15,12 +14,7 @@ #include /* for vmalloc() */ #include /* for vmalloc_to_page() */ -/* ugly, but necessary to build the dvb stuff under 2.4. */ -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,51) - #include "dvb_functions.h" -#endif - -#define SAA7146_VERSION_CODE KERNEL_VERSION(0,5,0) +#define SAA7146_VERSION_CODE 0x000500 /* 0.5.0 */ #define saa7146_write(sxy,adr,dat) writel((dat),(sxy->mem+(adr))) #define saa7146_read(sxy,adr) readl(sxy->mem+(adr)) @@ -33,13 +27,8 @@ extern unsigned int saa7146_debug; #define DEBUG_VARIABLE saa7146_debug #endif -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,51) -#define DEBUG_PROLOG printk("%s: %s(): ",__stringify(KBUILD_BASENAME),__FUNCTION__) -#define INFO(x) { printk("%s: ",__stringify(KBUILD_BASENAME)); printk x; } -#else #define DEBUG_PROLOG printk("%s: %s(): ",__stringify(KBUILD_MODNAME),__FUNCTION__) #define INFO(x) { printk("%s: ",__stringify(KBUILD_MODNAME)); printk x; } -#endif #define ERR(x) { DEBUG_PROLOG; printk x; } -- cgit v1.2.3 From b3743fa4442fc172e950ff0eaf6aa96e7d5ce9be Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Fri, 9 Sep 2005 13:03:23 -0700 Subject: [PATCH] yenta: share code with PCI core Share code between setup-bus.c and yenta_socket.c: use the write-out code of resources to the bridge also in yenta_socket.c, as it provides useful debug output. In addition, it fixes the bug that the CPU-centric resource view might need to be transferred to the PCI-centric view: setup-bus.c does that, while yenta-socket.c did not. Signed-off-by: Dominik Brodowski Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/pci.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/pci.h b/include/linux/pci.h index 6caaba0af469..c62e89270237 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -326,6 +326,7 @@ extern struct pci_dev *pci_dev_get(struct pci_dev *dev); extern void pci_dev_put(struct pci_dev *dev); extern void pci_remove_bus(struct pci_bus *b); extern void pci_remove_bus_device(struct pci_dev *dev); +void pci_setup_cardbus(struct pci_bus *bus); /* Generic PCI functions exported to card drivers */ -- cgit v1.2.3 From bd65a68574b787304a0cd90f22cfd44540ce3695 Mon Sep 17 00:00:00 2001 From: Brice Goglin Date: Fri, 9 Sep 2005 13:03:29 -0700 Subject: [PATCH] pcmcia: add pcmcia to IRQ information Add a devname parameter to the pcmcia_device structure, fills it with "pcmcia" in pcmcia_device_add, and passes it to request_irq in pcmcia_request_irq. Signed-off-by: Brice Goglin Signed-off-by: Dominik Brodowski Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/pcmcia/ds.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/pcmcia/ds.h b/include/pcmcia/ds.h index b707a603351b..cb8b6e6ce66c 100644 --- a/include/pcmcia/ds.h +++ b/include/pcmcia/ds.h @@ -151,6 +151,8 @@ struct pcmcia_device { uniquely define a pcmcia_device */ struct pcmcia_socket *socket; + char *devname; + u8 device_no; /* the hardware "function" device; certain subdevices can -- cgit v1.2.3 From 793cf9e6a54c698e109a599c8b8e303658fcaae6 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 9 Sep 2005 13:03:37 -0700 Subject: [PATCH] v4l: common part Updates and tuner additions - Remove $Id CVS logs for V4L files - Included newer cards. - Added a new NEC protocol for ir based on pulse distance. - Enable ATSC support for DViCO FusionHDTV5 Gold. - Added tuner LG NTSC (TALN mini series). - Fixed tea5767 autodetection. - Resolve more tuner types. - Commented debug function removed from mainstream. - Remove comments from mainstream. Still on development tree. - linux/version dependencies removed. - BTSC Lang1 now is set to auto_stereo mode. - New tuner standby API. - i2c-core.c uses hexadecimal for the i2c address, so it should stay consistent. Signed-off-by: Uli Luckas Signed-off-by: Mac Michaels Signed-off-by: Michael Krufky Signed-off-by: Hermann Pitton Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/videodev.h | 3 --- include/linux/videodev2.h | 4 ---- include/media/audiochip.h | 1 - include/media/id.h | 1 - include/media/ir-common.h | 4 ++-- include/media/tuner.h | 25 ++++++++++++++----------- include/media/tveeprom.h | 1 - include/media/video-buf.h | 1 - 8 files changed, 16 insertions(+), 24 deletions(-) (limited to 'include') diff --git a/include/linux/videodev.h b/include/linux/videodev.h index 9d6fbde3d29c..1cc8c31b7988 100644 --- a/include/linux/videodev.h +++ b/include/linux/videodev.h @@ -3,7 +3,6 @@ #include #include -#include #define HAVE_V4L2 1 #include @@ -29,7 +28,6 @@ struct video_device void (*release)(struct video_device *vfd); -#if 1 /* to be removed in 2.7.x */ /* obsolete -- fops->owner is used instead */ struct module *owner; /* dev->driver_data will be used instead some day. @@ -37,7 +35,6 @@ struct video_device * so the switch over will be transparent for you. * Or use {pci|usb}_{get|set}_drvdata() directly. */ void *priv; -#endif /* for videodev.c intenal usage -- please don't touch */ int users; /* video_exclusive_{open|close} ... */ diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h index acbfc525576d..f623a33b9abe 100644 --- a/include/linux/videodev2.h +++ b/include/linux/videodev2.h @@ -270,7 +270,6 @@ struct v4l2_timecode /* The above is based on SMPTE timecodes */ -#if 1 /* * M P E G C O M P R E S S I O N P A R A M E T E R S * @@ -357,7 +356,6 @@ struct v4l2_mpeg_compression { /* I don't expect the above being perfect yet ;) */ __u32 reserved_5[8]; }; -#endif struct v4l2_jpegcompression { @@ -871,10 +869,8 @@ struct v4l2_streamparm #define VIDIOC_ENUM_FMT _IOWR ('V', 2, struct v4l2_fmtdesc) #define VIDIOC_G_FMT _IOWR ('V', 4, struct v4l2_format) #define VIDIOC_S_FMT _IOWR ('V', 5, struct v4l2_format) -#if 1 /* experimental */ #define VIDIOC_G_MPEGCOMP _IOR ('V', 6, struct v4l2_mpeg_compression) #define VIDIOC_S_MPEGCOMP _IOW ('V', 7, struct v4l2_mpeg_compression) -#endif #define VIDIOC_REQBUFS _IOWR ('V', 8, struct v4l2_requestbuffers) #define VIDIOC_QUERYBUF _IOWR ('V', 9, struct v4l2_buffer) #define VIDIOC_G_FBUF _IOR ('V', 10, struct v4l2_framebuffer) diff --git a/include/media/audiochip.h b/include/media/audiochip.h index cd831168fdc1..a7ceee9fc5e9 100644 --- a/include/media/audiochip.h +++ b/include/media/audiochip.h @@ -1,5 +1,4 @@ /* - * $Id: audiochip.h,v 1.5 2005/06/16 22:59:16 hhackmann Exp $ */ #ifndef AUDIOCHIP_H diff --git a/include/media/id.h b/include/media/id.h index 801ddef301aa..6d02c94cdc0d 100644 --- a/include/media/id.h +++ b/include/media/id.h @@ -1,5 +1,4 @@ /* - * $Id: id.h,v 1.4 2005/06/12 04:19:19 mchehab Exp $ */ /* FIXME: this temporarely, until these are included in linux/i2c-id.h */ diff --git a/include/media/ir-common.h b/include/media/ir-common.h index 698670547f16..01b56822df4d 100644 --- a/include/media/ir-common.h +++ b/include/media/ir-common.h @@ -1,5 +1,4 @@ /* - * $Id: ir-common.h,v 1.9 2005/05/15 19:01:26 mchehab Exp $ * * some common structs and functions to handle infrared remotes via * input layer ... @@ -21,11 +20,11 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ -#include #include #define IR_TYPE_RC5 1 +#define IR_TYPE_PD 2 /* Pulse distance encoded IR */ #define IR_TYPE_OTHER 99 #define IR_KEYTAB_TYPE u32 @@ -60,6 +59,7 @@ void ir_input_keydown(struct input_dev *dev, struct ir_input_state *ir, u32 ir_extract_bits(u32 data, u32 mask); int ir_dump_samples(u32 *samples, int count); int ir_decode_biphase(u32 *samples, int count, int low, int high); +int ir_decode_pulsedistance(u32 *samples, int count, int low, int high); /* * Local variables: diff --git a/include/media/tuner.h b/include/media/tuner.h index eeaa15ddee85..252673bfa592 100644 --- a/include/media/tuner.h +++ b/include/media/tuner.h @@ -1,5 +1,3 @@ - -/* $Id: tuner.h,v 1.45 2005/07/28 18:41:21 mchehab Exp $ * tuner.h - definition for different tuners @@ -111,6 +109,8 @@ #define TUNER_LG_TDVS_H062F 64 /* DViCO FusionHDTV 5 */ #define TUNER_YMEC_TVF66T5_B_DFF 65 /* Acorp Y878F */ +#define TUNER_LG_NTSC_TALN_MINI 66 + #define NOTUNER 0 #define PAL 1 /* PAL_BG */ #define PAL_I 2 @@ -134,6 +134,7 @@ #define THOMSON 12 #define TUNER_SET_TYPE_ADDR _IOW('T',3,int) +#define TUNER_SET_STANDBY _IOW('T',4,int) #define TDA9887_SET_CONFIG _IOW('t',5,int) /* tv card specific */ @@ -153,9 +154,6 @@ #ifdef __KERNEL__ -#define I2C_ADDR_TDA8290 0x4b -#define I2C_ADDR_TDA8275 0x61 - enum tuner_mode { T_UNINITIALIZED = 0, T_RADIO = 1 << V4L2_TUNER_RADIO, @@ -198,6 +196,7 @@ struct tuner { void (*radio_freq)(struct i2c_client *c, unsigned int freq); int (*has_signal)(struct i2c_client *c); int (*is_stereo)(struct i2c_client *c); + void (*standby)(struct i2c_client *c); }; extern unsigned int tuner_debug; @@ -209,12 +208,16 @@ extern int tea5767_tuner_init(struct i2c_client *c); extern int default_tuner_init(struct i2c_client *c); extern int tea5767_autodetection(struct i2c_client *c); -#define tuner_warn(fmt, arg...) \ - dev_printk(KERN_WARNING , &t->i2c.dev , fmt , ## arg) -#define tuner_info(fmt, arg...) \ - dev_printk(KERN_INFO , &t->i2c.dev , fmt , ## arg) -#define tuner_dbg(fmt, arg...) \ - if (tuner_debug) dev_printk(KERN_DEBUG , &t->i2c.dev , fmt , ## arg) +#define tuner_warn(fmt, arg...) do {\ + printk(KERN_WARNING "%s %d-%04x: " fmt, t->i2c.driver->name, \ + t->i2c.adapter->nr, t->i2c.addr , ##arg); } while (0) +#define tuner_info(fmt, arg...) do {\ + printk(KERN_INFO "%s %d-%04x: " fmt, t->i2c.driver->name, \ + t->i2c.adapter->nr, t->i2c.addr , ##arg); } while (0) +#define tuner_dbg(fmt, arg...) do {\ + if (tuner_debug) \ + printk(KERN_DEBUG "%s %d-%04x: " fmt, t->i2c.driver->name, \ + t->i2c.adapter->nr, t->i2c.addr , ##arg); } while (0) #endif /* __KERNEL__ */ diff --git a/include/media/tveeprom.h b/include/media/tveeprom.h index 854a2c2f105b..e24e841c3211 100644 --- a/include/media/tveeprom.h +++ b/include/media/tveeprom.h @@ -1,5 +1,4 @@ /* - * $Id: tveeprom.h,v 1.2 2005/06/12 04:19:19 mchehab Exp $ */ struct tveeprom { diff --git a/include/media/video-buf.h b/include/media/video-buf.h index ae6da6de98de..ae8d7a000440 100644 --- a/include/media/video-buf.h +++ b/include/media/video-buf.h @@ -1,5 +1,4 @@ /* - * $Id: video-buf.h,v 1.9 2004/11/07 13:17:15 kraxel Exp $ * * generic helper functions for video4linux capture buffers, to handle * memory management and PCI DMA. Right now bttv + saa7134 use it. -- cgit v1.2.3 From 1c94aeecd3fd2aed66d9a1135f5329df622e6137 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 9 Sep 2005 13:03:52 -0700 Subject: [PATCH] v4l: normalize whitespace and comments in tuner lists - normalize whitespace and comments in tuner lists Signed-off-by: Philip Rowlands Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/media/tuner.h | 170 +++++++++++++++++++++++++------------------------- 1 file changed, 85 insertions(+), 85 deletions(-) (limited to 'include') diff --git a/include/media/tuner.h b/include/media/tuner.h index 252673bfa592..5b01ee6b0868 100644 --- a/include/media/tuner.h +++ b/include/media/tuner.h @@ -26,90 +26,90 @@ #define ADDR_UNSET (255) -#define TUNER_TEMIC_PAL 0 /* 4002 FH5 (3X 7756, 9483) */ -#define TUNER_PHILIPS_PAL_I 1 -#define TUNER_PHILIPS_NTSC 2 -#define TUNER_PHILIPS_SECAM 3 /* you must actively select B/G, L, L` */ - -#define TUNER_ABSENT 4 -#define TUNER_PHILIPS_PAL 5 -#define TUNER_TEMIC_NTSC 6 /* 4032 FY5 (3X 7004, 9498, 9789) */ -#define TUNER_TEMIC_PAL_I 7 /* 4062 FY5 (3X 8501, 9957) */ - -#define TUNER_TEMIC_4036FY5_NTSC 8 /* 4036 FY5 (3X 1223, 1981, 7686) */ -#define TUNER_ALPS_TSBH1_NTSC 9 -#define TUNER_ALPS_TSBE1_PAL 10 -#define TUNER_ALPS_TSBB5_PAL_I 11 - -#define TUNER_ALPS_TSBE5_PAL 12 -#define TUNER_ALPS_TSBC5_PAL 13 -#define TUNER_TEMIC_4006FH5_PAL 14 /* 4006 FH5 (3X 9500, 9501, 7291) */ -#define TUNER_ALPS_TSHC6_NTSC 15 - -#define TUNER_TEMIC_PAL_DK 16 /* 4016 FY5 (3X 1392, 1393) */ -#define TUNER_PHILIPS_NTSC_M 17 -#define TUNER_TEMIC_4066FY5_PAL_I 18 /* 4066 FY5 (3X 7032, 7035) */ -#define TUNER_TEMIC_4006FN5_MULTI_PAL 19 /* B/G, I and D/K autodetected (3X 7595, 7606, 7657)*/ - -#define TUNER_TEMIC_4009FR5_PAL 20 /* incl. FM radio (3X 7607, 7488, 7711)*/ -#define TUNER_TEMIC_4039FR5_NTSC 21 /* incl. FM radio (3X 7246, 7578, 7732)*/ -#define TUNER_TEMIC_4046FM5 22 /* you must actively select B/G, D/K, I, L, L` ! (3X 7804, 7806, 8103, 8104)*/ +#define TUNER_TEMIC_PAL 0 /* 4002 FH5 (3X 7756, 9483) */ +#define TUNER_PHILIPS_PAL_I 1 +#define TUNER_PHILIPS_NTSC 2 +#define TUNER_PHILIPS_SECAM 3 /* you must actively select B/G, L, L` */ + +#define TUNER_ABSENT 4 +#define TUNER_PHILIPS_PAL 5 +#define TUNER_TEMIC_NTSC 6 /* 4032 FY5 (3X 7004, 9498, 9789) */ +#define TUNER_TEMIC_PAL_I 7 /* 4062 FY5 (3X 8501, 9957) */ + +#define TUNER_TEMIC_4036FY5_NTSC 8 /* 4036 FY5 (3X 1223, 1981, 7686) */ +#define TUNER_ALPS_TSBH1_NTSC 9 +#define TUNER_ALPS_TSBE1_PAL 10 +#define TUNER_ALPS_TSBB5_PAL_I 11 + +#define TUNER_ALPS_TSBE5_PAL 12 +#define TUNER_ALPS_TSBC5_PAL 13 +#define TUNER_TEMIC_4006FH5_PAL 14 /* 4006 FH5 (3X 9500, 9501, 7291) */ +#define TUNER_ALPS_TSHC6_NTSC 15 + +#define TUNER_TEMIC_PAL_DK 16 /* 4016 FY5 (3X 1392, 1393) */ +#define TUNER_PHILIPS_NTSC_M 17 +#define TUNER_TEMIC_4066FY5_PAL_I 18 /* 4066 FY5 (3X 7032, 7035) */ +#define TUNER_TEMIC_4006FN5_MULTI_PAL 19 /* B/G, I and D/K autodetected (3X 7595, 7606, 7657) */ + +#define TUNER_TEMIC_4009FR5_PAL 20 /* incl. FM radio (3X 7607, 7488, 7711) */ +#define TUNER_TEMIC_4039FR5_NTSC 21 /* incl. FM radio (3X 7246, 7578, 7732) */ +#define TUNER_TEMIC_4046FM5 22 /* you must actively select B/G, D/K, I, L, L` ! (3X 7804, 7806, 8103, 8104) */ #define TUNER_PHILIPS_PAL_DK 23 -#define TUNER_PHILIPS_FQ1216ME 24 /* you must actively select B/G/D/K, I, L, L` */ -#define TUNER_LG_PAL_I_FM 25 -#define TUNER_LG_PAL_I 26 -#define TUNER_LG_NTSC_FM 27 +#define TUNER_PHILIPS_FQ1216ME 24 /* you must actively select B/G/D/K, I, L, L` */ +#define TUNER_LG_PAL_I_FM 25 +#define TUNER_LG_PAL_I 26 +#define TUNER_LG_NTSC_FM 27 -#define TUNER_LG_PAL_FM 28 -#define TUNER_LG_PAL 29 -#define TUNER_TEMIC_4009FN5_MULTI_PAL_FM 30 /* B/G, I and D/K autodetected (3X 8155, 8160, 8163)*/ -#define TUNER_SHARP_2U5JF5540_NTSC 31 +#define TUNER_LG_PAL_FM 28 +#define TUNER_LG_PAL 29 +#define TUNER_TEMIC_4009FN5_MULTI_PAL_FM 30 /* B/G, I and D/K autodetected (3X 8155, 8160, 8163) */ +#define TUNER_SHARP_2U5JF5540_NTSC 31 -#define TUNER_Samsung_PAL_TCPM9091PD27 32 -#define TUNER_MT2032 33 -#define TUNER_TEMIC_4106FH5 34 /* 4106 FH5 (3X 7808, 7865)*/ -#define TUNER_TEMIC_4012FY5 35 /* 4012 FY5 (3X 0971, 1099)*/ +#define TUNER_Samsung_PAL_TCPM9091PD27 32 +#define TUNER_MT2032 33 +#define TUNER_TEMIC_4106FH5 34 /* 4106 FH5 (3X 7808, 7865) */ +#define TUNER_TEMIC_4012FY5 35 /* 4012 FY5 (3X 0971, 1099) */ -#define TUNER_TEMIC_4136FY5 36 /* 4136 FY5 (3X 7708, 7746)*/ -#define TUNER_LG_PAL_NEW_TAPC 37 -#define TUNER_PHILIPS_FM1216ME_MK3 38 -#define TUNER_LG_NTSC_NEW_TAPC 39 +#define TUNER_TEMIC_4136FY5 36 /* 4136 FY5 (3X 7708, 7746) */ +#define TUNER_LG_PAL_NEW_TAPC 37 +#define TUNER_PHILIPS_FM1216ME_MK3 38 +#define TUNER_LG_NTSC_NEW_TAPC 39 -#define TUNER_HITACHI_NTSC 40 -#define TUNER_PHILIPS_PAL_MK 41 -#define TUNER_PHILIPS_ATSC 42 -#define TUNER_PHILIPS_FM1236_MK3 43 +#define TUNER_HITACHI_NTSC 40 +#define TUNER_PHILIPS_PAL_MK 41 +#define TUNER_PHILIPS_ATSC 42 +#define TUNER_PHILIPS_FM1236_MK3 43 -#define TUNER_PHILIPS_4IN1 44 /* ATI TV Wonder Pro - Conexant */ +#define TUNER_PHILIPS_4IN1 44 /* ATI TV Wonder Pro - Conexant */ /* Microtune mergeged with Temic 12/31/1999 partially financed by Alps - these may be similar to Temic */ -#define TUNER_MICROTUNE_4049FM5 45 -#define TUNER_LG_NTSC_TAPE 47 - -#define TUNER_TNF_8831BGFF 48 -#define TUNER_MICROTUNE_4042FI5 49 /* DViCO FusionHDTV 3 Gold-Q - 4042 FI5 (3X 8147) */ -#define TUNER_TCL_2002N 50 -#define TUNER_PHILIPS_FM1256_IH3 51 - -#define TUNER_THOMSON_DTT7610 52 -#define TUNER_PHILIPS_FQ1286 53 -#define TUNER_PHILIPS_TDA8290 54 -#define TUNER_LG_PAL_TAPE 55 /* Hauppauge PVR-150 PAL */ - -#define TUNER_PHILIPS_FQ1216AME_MK4 56 /* Hauppauge PVR-150 PAL */ -#define TUNER_PHILIPS_FQ1236A_MK4 57 /* Hauppauge PVR-500MCE NTSC */ - -#define TUNER_YMEC_TVF_8531MF 58 -#define TUNER_YMEC_TVF_5533MF 59 /* Pixelview Pro Ultra NTSC */ -#define TUNER_THOMSON_DTT7611 60 /* DViCO FusionHDTV 3 Gold-T */ -#define TUNER_TENA_9533_DI 61 - -#define TUNER_TEA5767 62 /* Only FM Radio Tuner */ -#define TUNER_PHILIPS_FMD1216ME_MK3 63 -#define TUNER_LG_TDVS_H062F 64 /* DViCO FusionHDTV 5 */ -#define TUNER_YMEC_TVF66T5_B_DFF 65 /* Acorp Y878F */ - -#define TUNER_LG_NTSC_TALN_MINI 66 +#define TUNER_MICROTUNE_4049FM5 45 +#define TUNER_MICROTUNE_4042_FI5 46 +#define TUNER_LG_NTSC_TAPE 47 + +#define TUNER_TNF_8831BGFF 48 +#define TUNER_MICROTUNE_4042FI5 49 /* DViCO FusionHDTV 3 Gold-Q - 4042 FI5 (3X 8147) */ +#define TUNER_TCL_2002N 50 +#define TUNER_PHILIPS_FM1256_IH3 51 + +#define TUNER_THOMSON_DTT7610 52 +#define TUNER_PHILIPS_FQ1286 53 +#define TUNER_PHILIPS_TDA8290 54 +#define TUNER_LG_PAL_TAPE 55 /* Hauppauge PVR-150 PAL */ + +#define TUNER_PHILIPS_FQ1216AME_MK4 56 /* Hauppauge PVR-150 PAL */ +#define TUNER_PHILIPS_FQ1236A_MK4 57 /* Hauppauge PVR-500MCE NTSC */ +#define TUNER_YMEC_TVF_8531MF 58 +#define TUNER_YMEC_TVF_5533MF 59 /* Pixelview Pro Ultra NTSC */ + +#define TUNER_THOMSON_DTT7611 60 /* DViCO FusionHDTV 3 Gold-T */ +#define TUNER_TENA_9533_DI 61 +#define TUNER_TEA5767 62 /* Only FM Radio Tuner */ +#define TUNER_PHILIPS_FMD1216ME_MK3 63 + +#define TUNER_LG_TDVS_H062F 64 /* DViCO FusionHDTV 5 */ +#define TUNER_YMEC_TVF66T5_B_DFF 65 /* Acorp Y878F */ +#define TUNER_LG_NTSC_TALN_MINI 66 #define NOTUNER 0 #define PAL 1 /* PAL_BG */ @@ -117,7 +117,7 @@ #define NTSC 3 #define SECAM 4 #define ATSC 5 -#define RADIO 6 +#define RADIO 6 #define NoTuner 0 #define Philips 1 @@ -163,21 +163,21 @@ enum tuner_mode { }; struct tuner_setup { - unsigned short addr; - unsigned int type; - unsigned int mode_mask; + unsigned short addr; + unsigned int type; + unsigned int mode_mask; }; struct tuner { /* device */ struct i2c_client i2c; - unsigned int type; /* chip type */ + unsigned int type; /* chip type */ - unsigned int mode; - unsigned int mode_mask; /* Combination of allowable modes */ + unsigned int mode; + unsigned int mode_mask; /* Combination of allowable modes */ - unsigned int freq; /* keep track of the current settings */ + unsigned int freq; /* keep track of the current settings */ unsigned int audmode; v4l2_std_id std; @@ -221,7 +221,7 @@ extern int tea5767_autodetection(struct i2c_client *c); #endif /* __KERNEL__ */ -#endif +#endif /* _TUNER_H */ /* * Overrides for Emacs so that we follow Linus's tabbing style. -- cgit v1.2.3 From 10b89ee387fd6cc38532a881f64b3d35f338ea0b Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 9 Sep 2005 13:04:03 -0700 Subject: [PATCH] v4l: include saa6588 compiler option and files / fixes comments on tuner.h - Include saa6588 compiler option and files. - Fix comment on tuner.h - linux/utsname.h replaced by linux/version.h to compile on vanilla 2.6.13 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/media/tuner.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/media/tuner.h b/include/media/tuner.h index 5b01ee6b0868..4ad08e24a1aa 100644 --- a/include/media/tuner.h +++ b/include/media/tuner.h @@ -1,4 +1,4 @@ - * +/* tuner.h - definition for different tuners Copyright (C) 1997 Markus Schroeder (schroedm@uni-duesseldorf.de) -- cgit v1.2.3 From dc75fc1b924ccf44ca9f0446701acc0081605b49 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 9 Sep 2005 13:04:04 -0700 Subject: [PATCH] v4l: Remove kernel version dependency from tea575x-tuner.h - Removed kernel version dependency from tea575x-tuner.h Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/sound/tea575x-tuner.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include') diff --git a/include/sound/tea575x-tuner.h b/include/sound/tea575x-tuner.h index ad3c3be33c03..b82e408e758f 100644 --- a/include/sound/tea575x-tuner.h +++ b/include/sound/tea575x-tuner.h @@ -34,9 +34,7 @@ struct snd_tea575x_ops { struct snd_tea575x { snd_card_t *card; struct video_device vd; /* video device */ -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 0) struct file_operations fops; -#endif int dev_nr; /* requested device number + 1 */ int vd_registered; /* video device is registered */ int tea5759; /* 5759 chip is present */ -- cgit v1.2.3 From 0f97a931b337e4662e736ca67f1fab0a187f5852 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 9 Sep 2005 13:04:05 -0700 Subject: [PATCH] v4l: tveeprom improved to support newer Hauppage cards - tveeprom improved and updated to reflect newer Hauppage cards. - CodingStyle fixes. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/media/tveeprom.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/media/tveeprom.h b/include/media/tveeprom.h index e24e841c3211..e2035c7da094 100644 --- a/include/media/tveeprom.h +++ b/include/media/tveeprom.h @@ -3,15 +3,19 @@ struct tveeprom { u32 has_radio; + u32 has_ir; /* 0: no IR, 1: IR present, 2: unknown */ u32 tuner_type; u32 tuner_formats; + u32 tuner2_type; + u32 tuner2_formats; + u32 digitizer; u32 digitizer_formats; u32 audio_processor; - /* a_p_fmts? */ + u32 decoder_processor; u32 model; u32 revision; @@ -19,7 +23,7 @@ struct tveeprom { char rev_str[5]; }; -void tveeprom_hauppauge_analog(struct tveeprom *tvee, +void tveeprom_hauppauge_analog(struct i2c_client *c, struct tveeprom *tvee, unsigned char *eeprom_data); int tveeprom_read(struct i2c_client *c, unsigned char *eedata, int len); -- cgit v1.2.3 From 8b6490e5faafb3a16ea45654fb55f9ff086f1495 Mon Sep 17 00:00:00 2001 From: Dipankar Sarma Date: Fri, 9 Sep 2005 13:04:07 -0700 Subject: [PATCH] files: fix rcu initializers First of a number of files_lock scaability patches. Here are the x86 numbers - tiobench on a 4(8)-way (HT) P4 system on ramdisk : (lockfree) Test 2.6.10-vanilla Stdev 2.6.10-fd Stdev ------------------------------------------------------------- Seqread 1400.8 11.52 1465.4 34.27 Randread 1594 8.86 2397.2 29.21 Seqwrite 242.72 3.47 238.46 6.53 Randwrite 445.74 9.15 446.4 9.75 The performance improvement is very significant. We are getting killed by the cacheline bouncing of the files_struct lock here. Writes on ramdisk (ext2) seems to vary just too much to get any meaningful number. Also, With Tridge's thread_perf test on a 4(8)-way (HT) P4 xeon system : 2.6.12-rc5-vanilla : Running test 'readwrite' with 8 tasks Threads 0.34 +/- 0.01 seconds Processes 0.16 +/- 0.00 seconds 2.6.12-rc5-fd : Running test 'readwrite' with 8 tasks Threads 0.17 +/- 0.02 seconds Processes 0.17 +/- 0.02 seconds I repeated the measurements on ramfs (as opposed to ext2 on ramdisk in the earlier measurement) and I got more consistent results from tiobench : 4(8) way xeon P4 ----------------- (lock-free) Test 2.6.12-rc5 Stdev 2.6.12-rc5-fd Stdev ------------------------------------------------------------- Seqread 1282 18.59 1343.6 26.37 Randread 1517 7 2415 34.27 Seqwrite 702.2 5.27 709.46 5.9 Randwrite 846.86 15.15 919.68 21.4 4-way ppc64 ------------ (lock-free) Test 2.6.12-rc5 Stdev 2.6.12-rc5-fd Stdev ------------------------------------------------------------- Seqread 1549 91.16 1569.6 47.2 Randread 1473.6 25.11 1585.4 69.99 Seqwrite 1096.8 20.03 1136 29.61 Randwrite 1189.6 4.04 1275.2 32.96 Also running Tridge's thread_perf test on ppc64 : 2.6.12-rc5-vanilla -------------------- Running test 'readwrite' with 4 tasks Threads 0.20 +/- 0.02 seconds Processes 0.16 +/- 0.01 seconds 2.6.12-rc5-fd -------------------- Running test 'readwrite' with 4 tasks Threads 0.18 +/- 0.04 seconds Processes 0.16 +/- 0.01 seconds The benefits are huge (upto ~60%) in some cases on x86 primarily due to the atomic operations during acquisition of ->file_lock and cache line bouncing in fast path. ppc64 benefits are modest due to LL/SC based locking, but still statistically significant. This patch: RCU head initilizer no longer needs the head varible name since we don't use list.h lists anymore. Signed-off-by: Dipankar Sarma Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rcupdate.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index fd276adf0fd5..4e65eb44adfd 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -52,8 +52,8 @@ struct rcu_head { void (*func)(struct rcu_head *head); }; -#define RCU_HEAD_INIT(head) { .next = NULL, .func = NULL } -#define RCU_HEAD(head) struct rcu_head head = RCU_HEAD_INIT(head) +#define RCU_HEAD_INIT { .next = NULL, .func = NULL } +#define RCU_HEAD(head) struct rcu_head head = RCU_HEAD_INIT #define INIT_RCU_HEAD(ptr) do { \ (ptr)->next = NULL; (ptr)->func = NULL; \ } while (0) -- cgit v1.2.3 From c0dfb2905126e9e94edebbce8d3e05001301f52d Mon Sep 17 00:00:00 2001 From: Dipankar Sarma Date: Fri, 9 Sep 2005 13:04:09 -0700 Subject: [PATCH] files: rcuref APIs Adds a set of primitives to do reference counting for objects that are looked up without locks using RCU. Signed-off-by: Ravikiran Thirumalai Signed-off-by: Dipankar Sarma Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/rcuref.h | 220 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 220 insertions(+) create mode 100644 include/linux/rcuref.h (limited to 'include') diff --git a/include/linux/rcuref.h b/include/linux/rcuref.h new file mode 100644 index 000000000000..e1adbba14b67 --- /dev/null +++ b/include/linux/rcuref.h @@ -0,0 +1,220 @@ +/* + * rcuref.h + * + * Reference counting for elements of lists/arrays protected by + * RCU. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * Copyright (C) IBM Corporation, 2005 + * + * Author: Dipankar Sarma + * Ravikiran Thirumalai + * + * See Documentation/RCU/rcuref.txt for detailed user guide. + * + */ + +#ifndef _RCUREF_H_ +#define _RCUREF_H_ + +#ifdef __KERNEL__ + +#include +#include +#include +#include + +/* + * These APIs work on traditional atomic_t counters used in the + * kernel for reference counting. Under special circumstances + * where a lock-free get() operation races with a put() operation + * these APIs can be used. See Documentation/RCU/rcuref.txt. + */ + +#ifdef __HAVE_ARCH_CMPXCHG + +/** + * rcuref_inc - increment refcount for object. + * @rcuref: reference counter in the object in question. + * + * This should be used only for objects where we use RCU and + * use the rcuref_inc_lf() api to acquire a reference + * in a lock-free reader-side critical section. + */ +static inline void rcuref_inc(atomic_t *rcuref) +{ + atomic_inc(rcuref); +} + +/** + * rcuref_dec - decrement refcount for object. + * @rcuref: reference counter in the object in question. + * + * This should be used only for objects where we use RCU and + * use the rcuref_inc_lf() api to acquire a reference + * in a lock-free reader-side critical section. + */ +static inline void rcuref_dec(atomic_t *rcuref) +{ + atomic_dec(rcuref); +} + +/** + * rcuref_dec_and_test - decrement refcount for object and test + * @rcuref: reference counter in the object. + * @release: pointer to the function that will clean up the object + * when the last reference to the object is released. + * This pointer is required. + * + * Decrement the refcount, and if 0, return 1. Else return 0. + * + * This should be used only for objects where we use RCU and + * use the rcuref_inc_lf() api to acquire a reference + * in a lock-free reader-side critical section. + */ +static inline int rcuref_dec_and_test(atomic_t *rcuref) +{ + return atomic_dec_and_test(rcuref); +} + +/* + * cmpxchg is needed on UP too, if deletions to the list/array can happen + * in interrupt context. + */ + +/** + * rcuref_inc_lf - Take reference to an object in a read-side + * critical section protected by RCU. + * @rcuref: reference counter in the object in question. + * + * Try and increment the refcount by 1. The increment might fail if + * the reference counter has been through a 1 to 0 transition and + * is no longer part of the lock-free list. + * Returns non-zero on successful increment and zero otherwise. + */ +static inline int rcuref_inc_lf(atomic_t *rcuref) +{ + int c, old; + c = atomic_read(rcuref); + while (c && (old = cmpxchg(&rcuref->counter, c, c + 1)) != c) + c = old; + return c; +} + +#else /* !__HAVE_ARCH_CMPXCHG */ + +extern spinlock_t __rcuref_hash[]; + +/* + * Use a hash table of locks to protect the reference count + * since cmpxchg is not available in this arch. + */ +#ifdef CONFIG_SMP +#define RCUREF_HASH_SIZE 4 +#define RCUREF_HASH(k) \ + (&__rcuref_hash[(((unsigned long)k)>>8) & (RCUREF_HASH_SIZE-1)]) +#else +#define RCUREF_HASH_SIZE 1 +#define RCUREF_HASH(k) &__rcuref_hash[0] +#endif /* CONFIG_SMP */ + +/** + * rcuref_inc - increment refcount for object. + * @rcuref: reference counter in the object in question. + * + * This should be used only for objects where we use RCU and + * use the rcuref_inc_lf() api to acquire a reference in a lock-free + * reader-side critical section. + */ +static inline void rcuref_inc(atomic_t *rcuref) +{ + unsigned long flags; + spin_lock_irqsave(RCUREF_HASH(rcuref), flags); + rcuref->counter += 1; + spin_unlock_irqrestore(RCUREF_HASH(rcuref), flags); +} + +/** + * rcuref_dec - decrement refcount for object. + * @rcuref: reference counter in the object in question. + * + * This should be used only for objects where we use RCU and + * use the rcuref_inc_lf() api to acquire a reference in a lock-free + * reader-side critical section. + */ +static inline void rcuref_dec(atomic_t *rcuref) +{ + unsigned long flags; + spin_lock_irqsave(RCUREF_HASH(rcuref), flags); + rcuref->counter -= 1; + spin_unlock_irqrestore(RCUREF_HASH(rcuref), flags); +} + +/** + * rcuref_dec_and_test - decrement refcount for object and test + * @rcuref: reference counter in the object. + * @release: pointer to the function that will clean up the object + * when the last reference to the object is released. + * This pointer is required. + * + * Decrement the refcount, and if 0, return 1. Else return 0. + * + * This should be used only for objects where we use RCU and + * use the rcuref_inc_lf() api to acquire a reference in a lock-free + * reader-side critical section. + */ +static inline int rcuref_dec_and_test(atomic_t *rcuref) +{ + unsigned long flags; + spin_lock_irqsave(RCUREF_HASH(rcuref), flags); + rcuref->counter--; + if (!rcuref->counter) { + spin_unlock_irqrestore(RCUREF_HASH(rcuref), flags); + return 1; + } else { + spin_unlock_irqrestore(RCUREF_HASH(rcuref), flags); + return 0; + } +} + +/** + * rcuref_inc_lf - Take reference to an object of a lock-free collection + * by traversing a lock-free list/array. + * @rcuref: reference counter in the object in question. + * + * Try and increment the refcount by 1. The increment might fail if + * the reference counter has been through a 1 to 0 transition and + * object is no longer part of the lock-free list. + * Returns non-zero on successful increment and zero otherwise. + */ +static inline int rcuref_inc_lf(atomic_t *rcuref) +{ + int ret; + unsigned long flags; + spin_lock_irqsave(RCUREF_HASH(rcuref), flags); + if (rcuref->counter) + ret = rcuref->counter++; + else + ret = 0; + spin_unlock_irqrestore(RCUREF_HASH(rcuref), flags); + return ret; +} + + +#endif /* !__HAVE_ARCH_CMPXCHG */ + +#endif /* __KERNEL__ */ +#endif /* _RCUREF_H_ */ -- cgit v1.2.3 From badf16621c1f9d1ac753be056fce11b43d6e0be5 Mon Sep 17 00:00:00 2001 From: Dipankar Sarma Date: Fri, 9 Sep 2005 13:04:10 -0700 Subject: [PATCH] files: break up files struct In order for the RCU to work, the file table array, sets and their sizes must be updated atomically. Instead of ensuring this through too many memory barriers, we put the arrays and their sizes in a separate structure. This patch takes the first step of putting the file table elements in a separate structure fdtable that is embedded withing files_struct. It also changes all the users to refer to the file table using files_fdtable() macro. Subsequent applciation of RCU becomes easier after this. Signed-off-by: Dipankar Sarma Signed-Off-By: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/file.h | 23 +++++++++++++++-------- include/linux/init_task.h | 13 +++++++++---- 2 files changed, 24 insertions(+), 12 deletions(-) (limited to 'include') diff --git a/include/linux/file.h b/include/linux/file.h index 5206beb9a80e..db372230848e 100644 --- a/include/linux/file.h +++ b/include/linux/file.h @@ -16,23 +16,29 @@ */ #define NR_OPEN_DEFAULT BITS_PER_LONG +struct fdtable { + unsigned int max_fds; + int max_fdset; + int next_fd; + struct file ** fd; /* current fd array */ + fd_set *close_on_exec; + fd_set *open_fds; +}; + /* * Open file table structure */ struct files_struct { atomic_t count; spinlock_t file_lock; /* Protects all the below members. Nests inside tsk->alloc_lock */ - int max_fds; - int max_fdset; - int next_fd; - struct file ** fd; /* current fd array */ - fd_set *close_on_exec; - fd_set *open_fds; + struct fdtable fdtab; fd_set close_on_exec_init; fd_set open_fds_init; struct file * fd_array[NR_OPEN_DEFAULT]; }; +#define files_fdtable(files) (&(files)->fdtab) + extern void FASTCALL(__fput(struct file *)); extern void FASTCALL(fput(struct file *)); @@ -63,9 +69,10 @@ extern int expand_files(struct files_struct *, int nr); static inline struct file * fcheck_files(struct files_struct *files, unsigned int fd) { struct file * file = NULL; + struct fdtable *fdt = files_fdtable(files); - if (fd < files->max_fds) - file = files->fd[fd]; + if (fd < fdt->max_fds) + file = fdt->fd[fd]; return file; } diff --git a/include/linux/init_task.h b/include/linux/init_task.h index c727c195a91a..94aefa54a1b5 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -3,16 +3,21 @@ #include -#define INIT_FILES \ -{ \ - .count = ATOMIC_INIT(1), \ - .file_lock = SPIN_LOCK_UNLOCKED, \ +#define INIT_FDTABLE \ +{ \ .max_fds = NR_OPEN_DEFAULT, \ .max_fdset = __FD_SETSIZE, \ .next_fd = 0, \ .fd = &init_files.fd_array[0], \ .close_on_exec = &init_files.close_on_exec_init, \ .open_fds = &init_files.open_fds_init, \ +} + +#define INIT_FILES \ +{ \ + .count = ATOMIC_INIT(1), \ + .file_lock = SPIN_LOCK_UNLOCKED, \ + .fdtab = INIT_FDTABLE, \ .close_on_exec_init = { { 0, } }, \ .open_fds_init = { { 0, } }, \ .fd_array = { NULL, } \ -- cgit v1.2.3 From ab2af1f5005069321c5d130f09cce577b03f43ef Mon Sep 17 00:00:00 2001 From: Dipankar Sarma Date: Fri, 9 Sep 2005 13:04:13 -0700 Subject: [PATCH] files: files struct with RCU Patch to eliminate struct files_struct.file_lock spinlock on the reader side and use rcu refcounting rcuref_xxx api for the f_count refcounter. The updates to the fdtable are done by allocating a new fdtable structure and setting files->fdt to point to the new structure. The fdtable structure is protected by RCU thereby allowing lock-free lookup. For fd arrays/sets that are vmalloced, we use keventd to free them since RCU callbacks can't sleep. A global list of fdtable to be freed is not scalable, so we use a per-cpu list. If keventd is already handling the current cpu's work, we use a timer to defer queueing of that work. Since the last publication, this patch has been re-written to avoid using explicit memory barriers and use rcu_assign_pointer(), rcu_dereference() premitives instead. This required that the fd information is kept in a separate structure (fdtable) and updated atomically. Signed-off-by: Dipankar Sarma Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/file.h | 11 +++++++++-- include/linux/fs.h | 4 +++- include/linux/init_task.h | 5 +++++ 3 files changed, 17 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/linux/file.h b/include/linux/file.h index db372230848e..f5bbd4c508b3 100644 --- a/include/linux/file.h +++ b/include/linux/file.h @@ -9,6 +9,7 @@ #include #include #include +#include /* * The default fd array needs to be at least BITS_PER_LONG, @@ -23,6 +24,9 @@ struct fdtable { struct file ** fd; /* current fd array */ fd_set *close_on_exec; fd_set *open_fds; + struct rcu_head rcu; + struct files_struct *free_files; + struct fdtable *next; }; /* @@ -31,13 +35,14 @@ struct fdtable { struct files_struct { atomic_t count; spinlock_t file_lock; /* Protects all the below members. Nests inside tsk->alloc_lock */ + struct fdtable *fdt; struct fdtable fdtab; fd_set close_on_exec_init; fd_set open_fds_init; struct file * fd_array[NR_OPEN_DEFAULT]; }; -#define files_fdtable(files) (&(files)->fdtab) +#define files_fdtable(files) (rcu_dereference((files)->fdt)) extern void FASTCALL(__fput(struct file *)); extern void FASTCALL(fput(struct file *)); @@ -65,6 +70,8 @@ extern fd_set *alloc_fdset(int); extern void free_fdset(fd_set *, int); extern int expand_files(struct files_struct *, int nr); +extern void free_fdtable(struct fdtable *fdt); +extern void __init files_defer_init(void); static inline struct file * fcheck_files(struct files_struct *files, unsigned int fd) { @@ -72,7 +79,7 @@ static inline struct file * fcheck_files(struct files_struct *files, unsigned in struct fdtable *fdt = files_fdtable(files); if (fd < fdt->max_fds) - file = fdt->fd[fd]; + file = rcu_dereference(fdt->fd[fd]); return file; } diff --git a/include/linux/fs.h b/include/linux/fs.h index fd93ab7da905..7f61227827d7 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -9,6 +9,7 @@ #include #include #include +#include /* * It's silly to have NR_OPEN bigger than NR_FILE, but you can change @@ -597,12 +598,13 @@ struct file { spinlock_t f_ep_lock; #endif /* #ifdef CONFIG_EPOLL */ struct address_space *f_mapping; + struct rcu_head f_rcuhead; }; extern spinlock_t files_lock; #define file_list_lock() spin_lock(&files_lock); #define file_list_unlock() spin_unlock(&files_lock); -#define get_file(x) atomic_inc(&(x)->f_count) +#define get_file(x) rcuref_inc(&(x)->f_count) #define file_count(x) atomic_read(&(x)->f_count) #define MAX_NON_LFS ((1UL<<31) - 1) diff --git a/include/linux/init_task.h b/include/linux/init_task.h index 94aefa54a1b5..68ab5f2ab9cd 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -2,6 +2,7 @@ #define _LINUX__INIT_TASK_H #include +#include #define INIT_FDTABLE \ { \ @@ -11,12 +12,16 @@ .fd = &init_files.fd_array[0], \ .close_on_exec = &init_files.close_on_exec_init, \ .open_fds = &init_files.open_fds_init, \ + .rcu = RCU_HEAD_INIT, \ + .free_files = NULL, \ + .next = NULL, \ } #define INIT_FILES \ { \ .count = ATOMIC_INIT(1), \ .file_lock = SPIN_LOCK_UNLOCKED, \ + .fdt = &init_files.fdtab, \ .fdtab = INIT_FDTABLE, \ .close_on_exec_init = { { 0, } }, \ .open_fds_init = { { 0, } }, \ -- cgit v1.2.3 From 7726e9e10fc6e026ed2dc00e48f4a3ffc1254ad2 Mon Sep 17 00:00:00 2001 From: "Antonino A. Daplas" Date: Fri, 9 Sep 2005 13:04:29 -0700 Subject: [PATCH] fbdev: Add fbset -a support Add capability to fbdev to listen to the FB_ACTIVATE_ALL flag. If set, it notifies fbcon that all consoles must be set to the current var. Signed-off-by: Antonino Daplas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fb.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include') diff --git a/include/linux/fb.h b/include/linux/fb.h index bc24beeed971..70da819df0f5 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -495,6 +495,9 @@ struct fb_cursor_user { #define FB_EVENT_BLANK 0x08 /* Private modelist is to be replaced */ #define FB_EVENT_NEW_MODELIST 0x09 +/* The resolution of the passed in fb_info about to change and + all vc's should be changed */ +#define FB_EVENT_MODE_CHANGE_ALL 0x0A struct fb_event { struct fb_info *info; -- cgit v1.2.3 From d2d58384fc5d4c0fe2d8e34bc2d15a90a9bb372a Mon Sep 17 00:00:00 2001 From: "Antonino A. Daplas" Date: Fri, 9 Sep 2005 13:04:31 -0700 Subject: [PATCH] vesafb: Add blanking support Add rudimentary support by manipulating the VGA registers. However, not all vesa modes are VGA compatible, so VGA compatiblity is checked first. Only 2 levels are supported, powerup and powerdown. Signed-off-by: Antonino Daplas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/tty.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/tty.h b/include/linux/tty.h index 59ff42c629ec..1267f88ece6e 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -74,7 +74,8 @@ struct screen_info { u16 vesapm_off; /* 0x30 */ u16 pages; /* 0x32 */ u16 vesa_attributes; /* 0x34 */ - /* 0x36 -- 0x3f reserved for future expansion */ + u32 capabilities; /* 0x36 */ + /* 0x3a -- 0x3f reserved for future expansion */ }; extern struct screen_info screen_info; -- cgit v1.2.3 From 5e518d7672dea4cd7c60871e40d0490c52f01d13 Mon Sep 17 00:00:00 2001 From: "Antonino A. Daplas" Date: Fri, 9 Sep 2005 13:04:34 -0700 Subject: [PATCH] fbdev: Resurrect hooks to get EDID from firmware For the i386, code is already present in video.S that gets the EDID from the video BIOS. Make this visible so drivers can also use this data as fallback when i2c does not work. To ensure that the EDID block is returned for the primary graphics adapter only, by check if the IORESOURCE_ROM_SHADOW flag is set. Signed-off-by: Antonino Daplas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fb.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/fb.h b/include/linux/fb.h index 70da819df0f5..e3e16f43b1bb 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -859,7 +859,9 @@ extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var, extern int fb_validate_mode(const struct fb_var_screeninfo *var, struct fb_info *info); extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var); -extern void fb_edid_to_monspecs(unsigned char *edid, struct fb_monspecs *specs); +extern const unsigned char *fb_firmware_edid(struct device *device); +extern void fb_edid_to_monspecs(unsigned char *edid, + struct fb_monspecs *specs); extern void fb_destroy_modedb(struct fb_videomode *modedb); /* drivers/video/modedb.c */ -- cgit v1.2.3 From b8c909454f046b59065c6997b651fe20cd90c0f4 Mon Sep 17 00:00:00 2001 From: "Antonino A. Daplas" Date: Fri, 9 Sep 2005 13:04:37 -0700 Subject: [PATCH] fbdev: Fix greater than 1 bit monochrome color handling Currently, fbcon assumes that the visual FB_VISUAL_MONO* is always 1 bit. According to Geert, there are old hardware where it's possible to have monochrome at 8-bit, but has only 2 colors, black - 0x00 and white - 0xff. Fix color handlers (fb_get_color_depth, and get_color) for this special case. Signed-off-by: Antonino Daplas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fb.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/fb.h b/include/linux/fb.h index e3e16f43b1bb..c71a7162e098 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -823,7 +823,8 @@ extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx, u32 height, u32 shift_high, u32 shift_low, u32 mod); extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height); extern void fb_set_suspend(struct fb_info *info, int state); -extern int fb_get_color_depth(struct fb_var_screeninfo *var); +extern int fb_get_color_depth(struct fb_var_screeninfo *var, + struct fb_fix_screeninfo *fix); extern int fb_get_options(char *name, char **option); extern int fb_new_modelist(struct fb_info *info); -- cgit v1.2.3 From 544393fe584d333480659a4bed30f5295355df11 Mon Sep 17 00:00:00 2001 From: Thomas Winischhofer Date: Fri, 9 Sep 2005 13:04:45 -0700 Subject: [PATCH] sisfb update This lifts sisfb from version 1.7.17 to version 1.8.9. Changes include: - Added support for XGI V3XT, V5, V8, Z7 chipsets, including POSTing of all of these chipsets. - Added support for latest SiS chipsets (761). - Added support for SiS76x memory "hybrid" mode. - Added support for new LCD resolutions (eg 1280x854, 856x480). - Fixed support for 320x240 STN panels (for embedded devices). - Fixed many HDTV modes (525p, 750p, 1080i). - Fixed PCI config register reading/writing to use proper kernel functions for this purpose. - Fixed PCI ROM handling to use the kernel's proper functions. - Removed lots of "typedef"s. - Removed lots of code which was for X.org/XFree86 only. - Fixed coding style in many places. - Removed lots of 2.4 cruft. - Reduced stack size by unifying two previously separate structs into one. - Added new hooks for memory allocation (for DRM). Now the driver can truly handle multiple cards, including memory management. - Fixed numerous minor bugs. Signed-off-by: Thomas Winischhofer Cc: "Antonino A. Daplas" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fb.h | 2 + include/video/sisfb.h | 188 ++++++++++++++++++++++++++++---------------------- 2 files changed, 109 insertions(+), 81 deletions(-) (limited to 'include') diff --git a/include/linux/fb.h b/include/linux/fb.h index c71a7162e098..34814a0b2378 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -107,6 +107,8 @@ #define FB_ACCEL_NV_20 44 /* nVidia Arch 20 */ #define FB_ACCEL_NV_30 45 /* nVidia Arch 30 */ #define FB_ACCEL_NV_40 46 /* nVidia Arch 40 */ +#define FB_ACCEL_XGI_VOLARI_V 47 /* XGI Volari V3XT, V5, V8 */ +#define FB_ACCEL_XGI_VOLARI_Z 48 /* XGI Volari Z7 */ #define FB_ACCEL_NEOMAGIC_NM2070 90 /* NeoMagic NM2070 */ #define FB_ACCEL_NEOMAGIC_NM2090 91 /* NeoMagic NM2090 */ #define FB_ACCEL_NEOMAGIC_NM2093 92 /* NeoMagic NM2093 */ diff --git a/include/video/sisfb.h b/include/video/sisfb.h index 136bf791643d..e402eb5b3c7a 100644 --- a/include/video/sisfb.h +++ b/include/video/sisfb.h @@ -1,5 +1,7 @@ /* - * Copyright (C) 2001-2004 by Thomas Winischhofer, Vienna, Austria. + * sisfb.h - definitions for the SiS framebuffer driver + * + * Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria. * * 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 @@ -16,8 +18,8 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA */ -#ifndef _LINUX_SISFB -#define _LINUX_SISFB +#ifndef _LINUX_SISFB_H_ +#define _LINUX_SISFB_H_ #include #include @@ -26,47 +28,35 @@ /* PUBLIC */ /**********************************************/ -/* vbflags */ -#define CRT2_DEFAULT 0x00000001 -#define CRT2_LCD 0x00000002 /* TW: Never change the order of the CRT2_XXX entries */ -#define CRT2_TV 0x00000004 /* (see SISCycleCRT2Type()) */ -#define CRT2_VGA 0x00000008 -#define TV_NTSC 0x00000010 -#define TV_PAL 0x00000020 -#define TV_HIVISION 0x00000040 -#define TV_YPBPR 0x00000080 -#define TV_AVIDEO 0x00000100 -#define TV_SVIDEO 0x00000200 -#define TV_SCART 0x00000400 -#define VB_CONEXANT 0x00000800 /* 661 series only */ -#define VB_TRUMPION VB_CONEXANT /* 300 series only */ -#define TV_PALM 0x00001000 -#define TV_PALN 0x00002000 +/* vbflags, public (others in sis.h) */ +#define CRT2_DEFAULT 0x00000001 +#define CRT2_LCD 0x00000002 +#define CRT2_TV 0x00000004 +#define CRT2_VGA 0x00000008 +#define TV_NTSC 0x00000010 +#define TV_PAL 0x00000020 +#define TV_HIVISION 0x00000040 +#define TV_YPBPR 0x00000080 +#define TV_AVIDEO 0x00000100 +#define TV_SVIDEO 0x00000200 +#define TV_SCART 0x00000400 +#define TV_PALM 0x00001000 +#define TV_PALN 0x00002000 #define TV_NTSCJ 0x00001000 -#define VB_302ELV 0x00004000 -#define TV_CHSCART 0x00008000 -#define TV_CHYPBPR525I 0x00010000 +#define TV_CHSCART 0x00008000 +#define TV_CHYPBPR525I 0x00010000 #define CRT1_VGA 0x00000000 #define CRT1_LCDA 0x00020000 #define VGA2_CONNECTED 0x00040000 -#define VB_DISPTYPE_CRT1 0x00080000 /* CRT1 connected and used */ -#define VB_301 0x00100000 /* Video bridge type */ -#define VB_301B 0x00200000 -#define VB_302B 0x00400000 -#define VB_30xBDH 0x00800000 /* 30xB DH version (w/o LCD support) */ -#define VB_LVDS 0x01000000 -#define VB_CHRONTEL 0x02000000 -#define VB_301LV 0x04000000 -#define VB_302LV 0x08000000 -#define VB_301C 0x10000000 -#define VB_SINGLE_MODE 0x20000000 /* CRT1 or CRT2; determined by DISPTYPE_CRTx */ -#define VB_MIRROR_MODE 0x40000000 /* CRT1 + CRT2 identical (mirror mode) */ -#define VB_DUALVIEW_MODE 0x80000000 /* CRT1 + CRT2 independent (dual head mode) */ +#define VB_DISPTYPE_CRT1 0x00080000 /* CRT1 connected and used */ +#define VB_SINGLE_MODE 0x20000000 /* CRT1 or CRT2; determined by DISPTYPE_CRTx */ +#define VB_MIRROR_MODE 0x40000000 /* CRT1 + CRT2 identical (mirror mode) */ +#define VB_DUALVIEW_MODE 0x80000000 /* CRT1 + CRT2 independent (dual head mode) */ /* Aliases: */ #define CRT2_ENABLE (CRT2_LCD | CRT2_TV | CRT2_VGA) -#define TV_STANDARD (TV_NTSC | TV_PAL | TV_PALM | TV_PALN | TV_NTSCJ) -#define TV_INTERFACE (TV_AVIDEO|TV_SVIDEO|TV_SCART|TV_HIVISION|TV_YPBPR|TV_CHSCART|TV_CHYPBPR525I) +#define TV_STANDARD (TV_NTSC | TV_PAL | TV_PALM | TV_PALN | TV_NTSCJ) +#define TV_INTERFACE (TV_AVIDEO|TV_SVIDEO|TV_SCART|TV_HIVISION|TV_YPBPR|TV_CHSCART|TV_CHYPBPR525I) /* Only if TV_YPBPR is set: */ #define TV_YPBPR525I TV_NTSC @@ -75,89 +65,118 @@ #define TV_YPBPR1080I TV_PALN #define TV_YPBPRALL (TV_YPBPR525I | TV_YPBPR525P | TV_YPBPR750P | TV_YPBPR1080I) -#define VB_SISBRIDGE (VB_301|VB_301B|VB_301C|VB_302B|VB_301LV|VB_302LV|VB_302ELV) -#define VB_SISTVBRIDGE (VB_301|VB_301B|VB_301C|VB_302B|VB_301LV|VB_302LV) -#define VB_VIDEOBRIDGE (VB_SISBRIDGE | VB_LVDS | VB_CHRONTEL | VB_CONEXANT) - #define VB_DISPTYPE_DISP2 CRT2_ENABLE #define VB_DISPTYPE_CRT2 CRT2_ENABLE #define VB_DISPTYPE_DISP1 VB_DISPTYPE_CRT1 #define VB_DISPMODE_SINGLE VB_SINGLE_MODE #define VB_DISPMODE_MIRROR VB_MIRROR_MODE #define VB_DISPMODE_DUAL VB_DUALVIEW_MODE -#define VB_DISPLAY_MODE (SINGLE_MODE | MIRROR_MODE | DUALVIEW_MODE) +#define VB_DISPLAY_MODE (SINGLE_MODE | MIRROR_MODE | DUALVIEW_MODE) /* Structure argument for SISFB_GET_INFO ioctl */ -typedef struct _SISFB_INFO sisfb_info, *psisfb_info; - -struct _SISFB_INFO { - __u32 sisfb_id; /* for identifying sisfb */ +struct sisfb_info { + __u32 sisfb_id; /* for identifying sisfb */ #ifndef SISFB_ID #define SISFB_ID 0x53495346 /* Identify myself with 'SISF' */ #endif - __u32 chip_id; /* PCI-ID of detected chip */ - __u32 memory; /* video memory in KB which sisfb manages */ - __u32 heapstart; /* heap start (= sisfb "mem" argument) in KB */ + __u32 chip_id; /* PCI-ID of detected chip */ + __u32 memory; /* total video memory in KB */ + __u32 heapstart; /* heap start offset in KB */ __u8 fbvidmode; /* current sisfb mode */ - __u8 sisfb_version; - __u8 sisfb_revision; - __u8 sisfb_patchlevel; + __u8 sisfb_version; + __u8 sisfb_revision; + __u8 sisfb_patchlevel; - __u8 sisfb_caps; /* sisfb capabilities */ + __u8 sisfb_caps; /* sisfb capabilities */ __u32 sisfb_tqlen; /* turbo queue length (in KB) */ - __u32 sisfb_pcibus; /* The card's PCI ID */ - __u32 sisfb_pcislot; - __u32 sisfb_pcifunc; + __u32 sisfb_pcibus; /* The card's PCI ID */ + __u32 sisfb_pcislot; + __u32 sisfb_pcifunc; + + __u8 sisfb_lcdpdc; /* PanelDelayCompensation */ + + __u8 sisfb_lcda; /* Detected status of LCDA for low res/text modes */ + + __u32 sisfb_vbflags; + __u32 sisfb_currentvbflags; + + __u32 sisfb_scalelcd; + __u32 sisfb_specialtiming; + + __u8 sisfb_haveemi; + __u8 sisfb_emi30,sisfb_emi31,sisfb_emi32,sisfb_emi33; + __u8 sisfb_haveemilcd; - __u8 sisfb_lcdpdc; /* PanelDelayCompensation */ + __u8 sisfb_lcdpdca; /* PanelDelayCompensation for LCD-via-CRT1 */ - __u8 sisfb_lcda; /* Detected status of LCDA for low res/text modes */ + __u16 sisfb_tvxpos, sisfb_tvypos; /* Warning: Values + 32 ! */ - __u32 sisfb_vbflags; - __u32 sisfb_currentvbflags; + __u32 sisfb_heapsize; /* heap size (in KB) */ + __u32 sisfb_videooffset; /* Offset of viewport in video memory (in bytes) */ - __u32 sisfb_scalelcd; - __u32 sisfb_specialtiming; + __u32 sisfb_curfstn; /* currently running FSTN/DSTN mode */ + __u32 sisfb_curdstn; - __u8 sisfb_haveemi; - __u8 sisfb_emi30,sisfb_emi31,sisfb_emi32,sisfb_emi33; - __u8 sisfb_haveemilcd; + __u16 sisfb_pci_vendor; /* PCI vendor (SiS or XGI) */ - __u8 sisfb_lcdpdca; /* PanelDelayCompensation for LCD-via-CRT1 */ + __u32 sisfb_vbflags2; /* ivideo->vbflags2 */ - __u16 sisfb_tvxpos, sisfb_tvypos; /* Warning: Values + 32 ! */ + __u8 sisfb_can_post; /* sisfb can POST this card */ + __u8 sisfb_card_posted; /* card is POSTED */ + __u8 sisfb_was_boot_device; /* This card was the boot video device (ie is primary) */ - __u8 reserved[208]; /* for future use */ + __u8 reserved[183]; /* for future use */ +}; + +#define SISFB_CMD_GETVBFLAGS 0x55AA0001 /* no arg; result[1] = vbflags */ +#define SISFB_CMD_SWITCHCRT1 0x55AA0010 /* arg[0]: 99 = query, 0 = off, 1 = on */ +/* more to come */ + +#define SISFB_CMD_ERR_OK 0x80000000 /* command succeeded */ +#define SISFB_CMD_ERR_LOCKED 0x80000001 /* sisfb is locked */ +#define SISFB_CMD_ERR_EARLY 0x80000002 /* request before sisfb took over gfx system */ +#define SISFB_CMD_ERR_NOVB 0x80000003 /* No video bridge */ +#define SISFB_CMD_ERR_NOCRT2 0x80000004 /* can't change CRT1 status, CRT2 disabled */ +/* more to come */ +#define SISFB_CMD_ERR_UNKNOWN 0x8000ffff /* Unknown command */ +#define SISFB_CMD_ERR_OTHER 0x80010000 /* Other error */ + +/* Argument for SISFB_CMD ioctl */ +struct sisfb_cmd { + __u32 sisfb_cmd; + __u32 sisfb_arg[16]; + __u32 sisfb_result[4]; }; /* Addtional IOCTLs for communication sisfb <> X driver */ /* If changing this, vgatypes.h must also be changed (for X driver) */ /* ioctl for identifying and giving some info (esp. memory heap start) */ -#define SISFB_GET_INFO_SIZE _IOR(0xF3,0x00,__u32) -#define SISFB_GET_INFO _IOR(0xF3,0x01,struct _SISFB_INFO) +#define SISFB_GET_INFO_SIZE _IOR(0xF3,0x00,__u32) +#define SISFB_GET_INFO _IOR(0xF3,0x01,struct sisfb_info) /* ioctrl to get current vertical retrace status */ -#define SISFB_GET_VBRSTATUS _IOR(0xF3,0x02,__u32) +#define SISFB_GET_VBRSTATUS _IOR(0xF3,0x02,__u32) /* ioctl to enable/disable panning auto-maximize (like nomax parameter) */ -#define SISFB_GET_AUTOMAXIMIZE _IOR(0xF3,0x03,__u32) -#define SISFB_SET_AUTOMAXIMIZE _IOW(0xF3,0x03,__u32) +#define SISFB_GET_AUTOMAXIMIZE _IOR(0xF3,0x03,__u32) +#define SISFB_SET_AUTOMAXIMIZE _IOW(0xF3,0x03,__u32) /* ioctls to relocate TV output (x=D[31:16], y=D[15:0], + 32)*/ -#define SISFB_GET_TVPOSOFFSET _IOR(0xF3,0x04,__u32) -#define SISFB_SET_TVPOSOFFSET _IOW(0xF3,0x04,__u32) +#define SISFB_GET_TVPOSOFFSET _IOR(0xF3,0x04,__u32) +#define SISFB_SET_TVPOSOFFSET _IOW(0xF3,0x04,__u32) + +/* ioctl for internal sisfb commands (sisfbctrl) */ +#define SISFB_COMMAND _IOWR(0xF3,0x05,struct sisfb_cmd) /* ioctl for locking sisfb (no register access during lock) */ /* As of now, only used to avoid register access during * the ioctls listed above. */ -#define SISFB_SET_LOCK _IOW(0xF3,0x06,__u32) - -/* more to come soon */ +#define SISFB_SET_LOCK _IOW(0xF3,0x06,__u32) /* ioctls 0xF3 up to 0x3F reserved for sisfb */ @@ -165,7 +184,7 @@ struct _SISFB_INFO { /* The following are deprecated and should not be used anymore: */ /****************************************************************/ /* ioctl for identifying and giving some info (esp. memory heap start) */ -#define SISFB_GET_INFO_OLD _IOR('n',0xF8,__u32) +#define SISFB_GET_INFO_OLD _IOR('n',0xF8,__u32) /* ioctrl to get current vertical retrace status */ #define SISFB_GET_VBRSTATUS_OLD _IOR('n',0xF9,__u32) /* ioctl to enable/disable panning auto-maximize (like nomax parameter) */ @@ -177,8 +196,8 @@ struct _SISFB_INFO { /* For fb memory manager (FBIO_ALLOC, FBIO_FREE) */ struct sis_memreq { - __u32 offset; - __u32 size; + __u32 offset; + __u32 size; }; /**********************************************/ @@ -187,12 +206,19 @@ struct sis_memreq { /**********************************************/ #ifdef __KERNEL__ + +#include + #define UNKNOWN_VGA 0 #define SIS_300_VGA 1 #define SIS_315_VGA 2 +#define SISFB_HAVE_MALLOC_NEW extern void sis_malloc(struct sis_memreq *req); +extern void sis_malloc_new(struct pci_dev *pdev, struct sis_memreq *req); + extern void sis_free(u32 base); +extern void sis_free_new(struct pci_dev *pdev, u32 base); #endif #endif -- cgit v1.2.3 From 9fa68eae9f8291a98bfe00b94b78f72eb253165a Mon Sep 17 00:00:00 2001 From: Knut Petersen Date: Fri, 9 Sep 2005 13:04:56 -0700 Subject: [PATCH] framebuffer: new driver for cyberblade/i1 graphics core This is a framebuffer driver for the Cyberblade/i1 graphics core. Currently tridenfb claims to support the cyberblade/i1 graphics core. This is of very limited truth. Even vesafb is faster and provides more working modes and a much better quality of the video signal. There is a great number of bugs in tridentfb ... but most often it is impossible to decide if these bugs are real bugs or if fixing them for the cyberblade/i1 core would break support for one of the other supported chips. Tridentfb seems to be unmaintained,and documentation for most of the supported chips is not available. So "fixing" cyberblade/i1 support inside of tridentfb was not an option, it would have caused numerous if(CYBERBLADEi1) else ... cases and would have rendered the code to be almost unmaintainable. A first version of this driver was published on 2005-07-31. A fix for a bug reported by Jochen Hein was integrated as well as some changes requested by Antonino A. Daplas. A message has been added to tridentfb to inform current users of tridentfb to switch to cyblafb if the cyberblade/i1 graphics core is detected. This patch is one logical change, but because of the included documentation it is bigger than 70kb. Therefore it is not sent to lkml and linux-fbdev-devel, Signed-off-by: Knut Petersen Cc: Muli Ben-Yehuda Acked-by: Antonino Daplas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/video/cyblafb.h | 171 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 171 insertions(+) create mode 100644 include/video/cyblafb.h (limited to 'include') diff --git a/include/video/cyblafb.h b/include/video/cyblafb.h new file mode 100644 index 000000000000..a9948232b131 --- /dev/null +++ b/include/video/cyblafb.h @@ -0,0 +1,171 @@ + +#ifndef CYBLAFB_DEBUG +#define CYBLAFB_DEBUG 0 +#endif + +#if CYBLAFB_DEBUG +#define debug(f,a...) printk("%s:" f, __FUNCTION__ , ## a); +#else +#define debug(f,a...) +#endif + +#define output(f, a...) printk("cyblafb: " f, ## a) + +#define Kb (1024) +#define Mb (Kb*Kb) + +/* PCI IDS of supported cards temporarily here */ + +#define CYBERBLADEi1 0x8500 + +/* these defines are for 'lcd' variable */ +#define LCD_STRETCH 0 +#define LCD_CENTER 1 +#define LCD_BIOS 2 + +/* display types */ +#define DISPLAY_CRT 0 +#define DISPLAY_FP 1 + +#define ROP_S 0xCC + +#define point(x,y) ((y)<<16|(x)) + +// +// Attribute Regs, ARxx, 3c0/3c1 +// +#define AR00 0x00 +#define AR01 0x01 +#define AR02 0x02 +#define AR03 0x03 +#define AR04 0x04 +#define AR05 0x05 +#define AR06 0x06 +#define AR07 0x07 +#define AR08 0x08 +#define AR09 0x09 +#define AR0A 0x0A +#define AR0B 0x0B +#define AR0C 0x0C +#define AR0D 0x0D +#define AR0E 0x0E +#define AR0F 0x0F +#define AR10 0x10 +#define AR12 0x12 +#define AR13 0x13 + +// +// Sequencer Regs, SRxx, 3c4/3c5 +// +#define SR00 0x00 +#define SR01 0x01 +#define SR02 0x02 +#define SR03 0x03 +#define SR04 0x04 +#define SR0D 0x0D +#define SR0E 0x0E +#define SR11 0x11 +#define SR18 0x18 +#define SR19 0x19 + +// +// +// +#define CR00 0x00 +#define CR01 0x01 +#define CR02 0x02 +#define CR03 0x03 +#define CR04 0x04 +#define CR05 0x05 +#define CR06 0x06 +#define CR07 0x07 +#define CR08 0x08 +#define CR09 0x09 +#define CR0A 0x0A +#define CR0B 0x0B +#define CR0C 0x0C +#define CR0D 0x0D +#define CR0E 0x0E +#define CR0F 0x0F +#define CR10 0x10 +#define CR11 0x11 +#define CR12 0x12 +#define CR13 0x13 +#define CR14 0x14 +#define CR15 0x15 +#define CR16 0x16 +#define CR17 0x17 +#define CR18 0x18 +#define CR19 0x19 +#define CR1A 0x1A +#define CR1B 0x1B +#define CR1C 0x1C +#define CR1D 0x1D +#define CR1E 0x1E +#define CR1F 0x1F +#define CR20 0x20 +#define CR21 0x21 +#define CR27 0x27 +#define CR29 0x29 +#define CR2A 0x2A +#define CR2B 0x2B +#define CR2D 0x2D +#define CR2F 0x2F +#define CR36 0x36 +#define CR38 0x38 +#define CR39 0x39 +#define CR3A 0x3A +#define CR55 0x55 +#define CR56 0x56 +#define CR57 0x57 +#define CR58 0x58 + +// +// +// + +#define GR00 0x01 +#define GR01 0x01 +#define GR02 0x02 +#define GR03 0x03 +#define GR04 0x04 +#define GR05 0x05 +#define GR06 0x06 +#define GR07 0x07 +#define GR08 0x08 +#define GR0F 0x0F +#define GR20 0x20 +#define GR23 0x23 +#define GR2F 0x2F +#define GR30 0x30 +#define GR31 0x31 +#define GR33 0x33 +#define GR52 0x52 +#define GR53 0x53 +#define GR5D 0x5d + + +// +// Graphics Engine +// +#define GEBase 0x2100 // could be mapped elsewhere if we like it +#define GE00 (GEBase+0x00) // source 1, p 111 +#define GE04 (GEBase+0x04) // source 2, p 111 +#define GE08 (GEBase+0x08) // destination 1, p 111 +#define GE0C (GEBase+0x0C) // destination 2, p 112 +#define GE20 (GEBase+0x20) // engine status, p 113 +#define GE24 (GEBase+0x24) // reset all GE pointers +#define GE44 (GEBase+0x44) // command register, p 126 +#define GE48 (GEBase+0x48) // raster operation, p 127 +#define GE60 (GEBase+0x60) // foreground color, p 128 +#define GE64 (GEBase+0x64) // background color, p 128 +#define GE6C (GEBase+0x6C) // Pattern and Style, p 129, ok +#define GE9C (GEBase+0x9C) // pixel engine data port, p 125 +#define GEB8 (GEBase+0xB8) // Destination Stride / Buffer Base 0, p 133 +#define GEBC (GEBase+0xBC) // Destination Stride / Buffer Base 1, p 133 +#define GEC0 (GEBase+0xC0) // Destination Stride / Buffer Base 2, p 133 +#define GEC4 (GEBase+0xC4) // Destination Stride / Buffer Base 3, p 133 +#define GEC8 (GEBase+0xC8) // Source Stride / Buffer Base 0, p 133 +#define GECC (GEBase+0xCC) // Source Stride / Buffer Base 1, p 133 +#define GED0 (GEBase+0xD0) // Source Stride / Buffer Base 2, p 133 +#define GED4 (GEBase+0xD4) // Source Stride / Buffer Base 3, p 133 -- cgit v1.2.3 From cdb9b9f730eac4f947a2c552806a3a550bf019ef Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Tue, 6 Sep 2005 09:31:03 +1000 Subject: [PATCH] PCI: Small rearrangement of PCI probing code This patch makes some small rearrangements of the PCI probing code in order to make it possible for arch code to set up the PCI tree without needing to duplicate code from the PCI layer unnecessarily. PPC64 will use this to set up the PCI tree from the Open Firmware device tree, which we need to do on logically-partitioned pSeries systems. Signed-off-by: Paul Mackerras Signed-off-by: Greg Kroah-Hartman --- include/linux/pci.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include') diff --git a/include/linux/pci.h b/include/linux/pci.h index 609499356e07..9c7aecf0c599 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -315,8 +315,11 @@ static inline struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *s pci_bus_add_devices(root_bus); return root_bus; } +struct pci_bus *pci_create_bus(struct device *parent, int bus, struct pci_ops *ops, void *sysdata); +struct pci_bus * pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr); int pci_scan_slot(struct pci_bus *bus, int devfn); struct pci_dev * pci_scan_single_device(struct pci_bus *bus, int devfn); +void pci_device_add(struct pci_dev *dev, struct pci_bus *bus); unsigned int pci_scan_child_bus(struct pci_bus *bus); void pci_bus_add_device(struct pci_dev *dev); void pci_read_bridge_bases(struct pci_bus *child); -- cgit v1.2.3 From 96fe6a2109db29cd15b90a093c16e6cb4b19371a Mon Sep 17 00:00:00 2001 From: "Antonino A. Daplas" Date: Fri, 9 Sep 2005 13:09:58 -0700 Subject: [PATCH] fbdev: Add VESA Coordinated Video Timings (CVT) support The Coordinated Video Timings (CVT) is the latest standard approved by VESA concerning video timings generation. It addresses the limitation of GTF which is designed mainly for CRT displays. CRT's have a high blanking requirement (as much as 25% of the horizontal frame length) which artificially increases the pixelclock. Digital displays, on the other hand, needs to conserve the pixelclock as much as possible. The GTF also does not take into account the different aspect ratios in its calculation. The new function added is fb_find_mode_cvt(). It is called by fb_find_mode() if it recognizes a mode option string formatted for CVT. The format is: x[M][R][-][][i][m] The 'M' tells the function to calculate using CVT. On it's own, it will compute a timing for CRT displays at 60Hz. If the 'R' is specified, 'reduced blanking' computation will be used, best for flatpanels. The 'i' and the 'm' is for 'interlaced mode' and 'with margins' respectively. To determine if CVT was used, check for dmesg for something like this: CVT Mode - M[-R], ie: .480M3-R (800x600 reduced blanking) where: pix - product of xres and yres, in MB M - is a CVT mode n - the aspect ratio (3 - 4:3; 4 - 5:4; 9 - 16:9, 15:9; A - 16:10) -R - reduced blanking Signed-off-by: Antonino Daplas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fb.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/fb.h b/include/linux/fb.h index 34814a0b2378..9a4f035e9fdc 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -866,6 +866,7 @@ extern const unsigned char *fb_firmware_edid(struct device *device); extern void fb_edid_to_monspecs(unsigned char *edid, struct fb_monspecs *specs); extern void fb_destroy_modedb(struct fb_videomode *modedb); +extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb); /* drivers/video/modedb.c */ #define VESA_MODEDB_SIZE 34 -- cgit v1.2.3 From ba44cd2d8abc3271a608b42cdbf55e1e575e2ba5 Mon Sep 17 00:00:00 2001 From: Richard Purdie Date: Fri, 9 Sep 2005 13:10:03 -0700 Subject: [PATCH] pxafb: Add hsync time reporting hook To solve touchscreen interference problems devices like the Sharp Zaurus SL-C3000 need to know the length of the horitzontal sync pulses. This patch adds a hook to pxafb so the touchscreen driver can function correctly. Signed-Off-By: Richard Purdie Signed-off-by: Antonino Daplas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-arm/arch-pxa/pxafb.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/asm-arm/arch-pxa/pxafb.h b/include/asm-arm/arch-pxa/pxafb.h index 27d71e9d413b..21c0e16dce5f 100644 --- a/include/asm-arm/arch-pxa/pxafb.h +++ b/include/asm-arm/arch-pxa/pxafb.h @@ -66,3 +66,4 @@ struct pxafb_mach_info { }; void set_pxa_fb_info(struct pxafb_mach_info *hard_pxa_fb_info); +unsigned long pxafb_get_hsync_time(struct device *dev); -- cgit v1.2.3 From 829e79b680210c4f4de435af6e1f90451922fc7d Mon Sep 17 00:00:00 2001 From: "Antonino A. Daplas" Date: Fri, 9 Sep 2005 13:10:04 -0700 Subject: [PATCH] fbcon: Break up bit_putcs into its component functions The function bit_putcs() in drivers/video/console/bitblit.c is becoming large. Break it up into its component functions (bit_putcs_unaligned and bit_putcs_aligned). Incorporated fb_pad_aligned_buffer() optimization by Roman Zippel. Signed-off-by: Antonino Daplas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fb.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include') diff --git a/include/linux/fb.h b/include/linux/fb.h index 9a4f035e9fdc..82e39cd0c4fb 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -833,6 +833,21 @@ extern int fb_new_modelist(struct fb_info *info); extern struct fb_info *registered_fb[FB_MAX]; extern int num_registered_fb; +static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, + u8 *src, u32 s_pitch, u32 height) +{ + int i, j; + + d_pitch -= s_pitch; + + for (i = height; i--; ) { + /* s_pitch is a few bytes at the most, memcpy is suboptimal */ + for (j = 0; j < s_pitch; j++) + *dst++ = *src++; + dst += d_pitch; + } +} + /* drivers/video/fbsysfs.c */ extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev); extern void framebuffer_release(struct fb_info *info); -- cgit v1.2.3 From 20fd5767689124a920c1deb9c380304e082f026c Mon Sep 17 00:00:00 2001 From: Arnaud Patard Date: Fri, 9 Sep 2005 13:10:07 -0700 Subject: [PATCH] s3c2410fb: ARM S3C2410 framebuffer driver This set of two patches add support for the framebuffer of the Samsung S3C2410 ARM SoC. This driver was started about one year ago and is now used on iPAQ h1930/h1940, Acer n30 and probably other s3c2410-based machines I'm not aware of. I've also heard yesterday that it's working also on iPAQ rx3715/rx3115 (s3c2440-based machines). Signed-Off-By: Arnaud Patard Signed-off-by: Antonino Daplas Signed-off-by: Ben Dooks Cc: Russell King Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-arm/arch-s3c2410/fb.h | 69 +++++++++++++++++++++++++++++++++ include/asm-arm/arch-s3c2410/regs-lcd.h | 17 ++++++++ 2 files changed, 86 insertions(+) create mode 100644 include/asm-arm/arch-s3c2410/fb.h (limited to 'include') diff --git a/include/asm-arm/arch-s3c2410/fb.h b/include/asm-arm/arch-s3c2410/fb.h new file mode 100644 index 000000000000..ac57bc887d82 --- /dev/null +++ b/include/asm-arm/arch-s3c2410/fb.h @@ -0,0 +1,69 @@ +/* linux/include/asm/arch-s3c2410/fb.h + * + * Copyright (c) 2004 Arnaud Patard + * + * Inspired by pxafb.h + * + * 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. + * + * + * Changelog: + * 07-Sep-2004 RTP Created file + * 03-Nov-2004 BJD Updated and minor cleanups + * 03-Aug-2005 RTP Renamed to fb.h +*/ + +#ifndef __ASM_ARM_FB_H +#define __ASM_ARM_FB_H + +#include + +struct s3c2410fb_val { + unsigned int defval; + unsigned int min; + unsigned int max; +}; + +struct s3c2410fb_hw { + unsigned long lcdcon1; + unsigned long lcdcon2; + unsigned long lcdcon3; + unsigned long lcdcon4; + unsigned long lcdcon5; +}; + +struct s3c2410fb_mach_info { + unsigned char fixed_syncs; /* do not update sync/border */ + + /* Screen size */ + int width; + int height; + + /* Screen info */ + struct s3c2410fb_val xres; + struct s3c2410fb_val yres; + struct s3c2410fb_val bpp; + + /* lcd configuration registers */ + struct s3c2410fb_hw regs; + + /* GPIOs */ + + unsigned long gpcup; + unsigned long gpcup_mask; + unsigned long gpccon; + unsigned long gpccon_mask; + unsigned long gpdup; + unsigned long gpdup_mask; + unsigned long gpdcon; + unsigned long gpdcon_mask; + + /* lpc3600 control register */ + unsigned long lpcsel; +}; + +void __init set_s3c2410fb_info(struct s3c2410fb_mach_info *hard_s3c2410fb_info); + +#endif /* __ASM_ARM_FB_H */ diff --git a/include/asm-arm/arch-s3c2410/regs-lcd.h b/include/asm-arm/arch-s3c2410/regs-lcd.h index 7f882ea92b2a..b6b1b4e8bbeb 100644 --- a/include/asm-arm/arch-s3c2410/regs-lcd.h +++ b/include/asm-arm/arch-s3c2410/regs-lcd.h @@ -51,21 +51,32 @@ #define S3C2410_LCDCON1_ENVID (1) +#define S3C2410_LCDCON1_MODEMASK 0x1E + #define S3C2410_LCDCON2_VBPD(x) ((x) << 24) #define S3C2410_LCDCON2_LINEVAL(x) ((x) << 14) #define S3C2410_LCDCON2_VFPD(x) ((x) << 6) #define S3C2410_LCDCON2_VSPW(x) ((x) << 0) +#define S3C2410_LCDCON2_GET_VBPD(x) ( ((x) >> 24) & 0xFF) +#define S3C2410_LCDCON2_GET_VFPD(x) ( ((x) >> 6) & 0xFF) +#define S3C2410_LCDCON2_GET_VSPW(x) ( ((x) >> 0) & 0x3F) + #define S3C2410_LCDCON3_HBPD(x) ((x) << 19) #define S3C2410_LCDCON3_WDLY(x) ((x) << 19) #define S3C2410_LCDCON3_HOZVAL(x) ((x) << 8) #define S3C2410_LCDCON3_HFPD(x) ((x) << 0) #define S3C2410_LCDCON3_LINEBLANK(x)((x) << 0) +#define S3C2410_LCDCON3_GET_HBPD(x) ( ((x) >> 19) & 0x7F) +#define S3C2410_LCDCON3_GET_HFPD(x) ( ((x) >> 0) & 0xFF) + #define S3C2410_LCDCON4_MVAL(x) ((x) << 8) #define S3C2410_LCDCON4_HSPW(x) ((x) << 0) #define S3C2410_LCDCON4_WLH(x) ((x) << 0) +#define S3C2410_LCDCON4_GET_HSPW(x) ( ((x) >> 0) & 0xFF) + #define S3C2410_LCDCON5_BPP24BL (1<<12) #define S3C2410_LCDCON5_FRM565 (1<<11) #define S3C2410_LCDCON5_INVVCLK (1<<10) @@ -100,10 +111,16 @@ #define S3C2410_DITHMODE S3C2410_LCDREG(0x4C) #define S3C2410_TPAL S3C2410_LCDREG(0x50) +#define S3C2410_TPAL_EN (1<<24) + /* interrupt info */ #define S3C2410_LCDINTPND S3C2410_LCDREG(0x54) #define S3C2410_LCDSRCPND S3C2410_LCDREG(0x58) #define S3C2410_LCDINTMSK S3C2410_LCDREG(0x5C) +#define S3C2410_LCDINT_FIWSEL (1<<2) +#define S3C2410_LCDINT_FRSYNC (1<<1) +#define S3C2410_LCDINT_FICNT (1<<0) + #define S3C2410_LPCSEL S3C2410_LCDREG(0x60) #define S3C2410_TFTPAL(x) S3C2410_LCDREG((0x400 + (x)*4)) -- cgit v1.2.3 From 9d01a82e46a8dd18233121a6bc140e5576649583 Mon Sep 17 00:00:00 2001 From: Martin Waitz Date: Fri, 9 Sep 2005 13:10:17 -0700 Subject: [PATCH] DocBook: fix kernel-api documentation generation This patch changes a macro definition so that kernel-doc can understand it. Signed-off-by: Martin Waitz Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/sound/pcm.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 389e8ebe9c19..d6361dab0370 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -910,11 +910,10 @@ int snd_pcm_format_big_endian(snd_pcm_format_t format); * Returns 1 if the given PCM format is CPU-endian, 0 if * opposite, or a negative error code if endian not specified. */ -/* int snd_pcm_format_cpu_endian(snd_pcm_format_t format); */ #ifdef SNDRV_LITTLE_ENDIAN -#define snd_pcm_format_cpu_endian snd_pcm_format_little_endian +#define snd_pcm_format_cpu_endian(format) snd_pcm_format_little_endian(format) #else -#define snd_pcm_format_cpu_endian snd_pcm_format_big_endian +#define snd_pcm_format_cpu_endian(format) snd_pcm_format_big_endian(format) #endif int snd_pcm_format_width(snd_pcm_format_t format); /* in bits */ int snd_pcm_format_physical_width(snd_pcm_format_t format); /* in bits */ -- cgit v1.2.3 From d8a5ba45457e4a22aa39c939121efd7bb6c76672 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 9 Sep 2005 13:10:26 -0700 Subject: [PATCH] FUSE - core This patch adds FUSE core. This contains the following files: o inode.c - superblock operations (alloc_inode, destroy_inode, read_inode, clear_inode, put_super, show_options) - registers FUSE filesystem o fuse_i.h - private header file Requirements ============ The most important difference between orinary filesystems and FUSE is the fact, that the filesystem data/metadata is provided by a userspace process run with the privileges of the mount "owner" instead of the kernel, or some remote entity usually running with elevated privileges. The security implication of this is that a non-privileged user must not be able to use this capability to compromise the system. Obvious requirements arising from this are: - mount owner should not be able to get elevated privileges with the help of the mounted filesystem - mount owner should not be able to induce undesired behavior in other users' or the super user's processes - mount owner should not get illegitimate access to information from other users' and the super user's processes These are currently ensured with the following constraints: 1) mount is only allowed to directory or file which the mount owner can modify without limitation (write access + no sticky bit for directories) 2) nosuid,nodev mount options are forced 3) any process running with fsuid different from the owner is denied all access to the filesystem 1) and 2) are ensured by the "fusermount" mount utility which is a setuid root application doing the actual mount operation. 3) is ensured by a check in the permission() method in kernel I started thinking about doing 3) in a different way because Christoph H. made a big deal out of it, saying that FUSE is unacceptable into mainline in this form. The suggested use of private namespaces would be OK, but in their current form have many limitations that make their use impractical (as discussed in this thread). Suggested improvements that would address these limitations: - implement shared subtrees - allow a process to join an existing namespace (make namespaces first-class objects) - implement the namespace creation/joining in a PAM module With all that in place the check of owner against current->fsuid may be removed from the FUSE kernel module, without compromising the security requirements. Suid programs still interesting questions, since they get access even to the private namespace causing some information leak (exact order/timing of filesystem operations performed), giving some ptrace-like capabilities to unprivileged users. BTW this problem is not strictly limited to the namespace approach, since suid programs setting fsuid and accessing users' files will succeed with the current approach too. Signed-off-by: Miklos Szeredi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fuse.h | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 include/linux/fuse.h (limited to 'include') diff --git a/include/linux/fuse.h b/include/linux/fuse.h new file mode 100644 index 000000000000..2b1f4ae01e9d --- /dev/null +++ b/include/linux/fuse.h @@ -0,0 +1,38 @@ +/* + FUSE: Filesystem in Userspace + Copyright (C) 2001-2005 Miklos Szeredi + + This program can be distributed under the terms of the GNU GPL. + See the file COPYING. +*/ + +/* This file defines the kernel interface of FUSE */ + +#include + +/** Version number of this interface */ +#define FUSE_KERNEL_VERSION 5 + +/** Minor version number of this interface */ +#define FUSE_KERNEL_MINOR_VERSION 1 + +/** The node ID of the root inode */ +#define FUSE_ROOT_ID 1 + +struct fuse_attr { + __u64 ino; + __u64 size; + __u64 blocks; + __u64 atime; + __u64 mtime; + __u64 ctime; + __u32 atimensec; + __u32 mtimensec; + __u32 ctimensec; + __u32 mode; + __u32 nlink; + __u32 uid; + __u32 gid; + __u32 rdev; +}; + -- cgit v1.2.3 From 334f485df85ac7736ebe14940bf0a059c5f26d7d Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 9 Sep 2005 13:10:27 -0700 Subject: [PATCH] FUSE - device functions This adds the FUSE device handling functions. This contains the following files: o dev.c - fuse device operations (read, write, release, poll) - registers misc device - support for sending requests to userspace Signed-off-by: Miklos Szeredi Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fuse.h | 36 +++++++++++++++++++++++++++++++++++- 1 file changed, 35 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/fuse.h b/include/linux/fuse.h index 2b1f4ae01e9d..a1aebd7104c4 100644 --- a/include/linux/fuse.h +++ b/include/linux/fuse.h @@ -11,7 +11,7 @@ #include /** Version number of this interface */ -#define FUSE_KERNEL_VERSION 5 +#define FUSE_KERNEL_VERSION 6 /** Minor version number of this interface */ #define FUSE_KERNEL_MINOR_VERSION 1 @@ -19,6 +19,12 @@ /** The node ID of the root inode */ #define FUSE_ROOT_ID 1 +/** The major number of the fuse character device */ +#define FUSE_MAJOR 10 + +/** The minor number of the fuse character device */ +#define FUSE_MINOR 229 + struct fuse_attr { __u64 ino; __u64 size; @@ -36,3 +42,31 @@ struct fuse_attr { __u32 rdev; }; +enum fuse_opcode { + FUSE_INIT = 26 +}; + +/* Conservative buffer size for the client */ +#define FUSE_MAX_IN 8192 + +struct fuse_init_in_out { + __u32 major; + __u32 minor; +}; + +struct fuse_in_header { + __u32 len; + __u32 opcode; + __u64 unique; + __u64 nodeid; + __u32 uid; + __u32 gid; + __u32 pid; +}; + +struct fuse_out_header { + __u32 len; + __s32 error; + __u64 unique; +}; + -- cgit v1.2.3 From e5e5558e923f35839108a12718494ecb73fb782f Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 9 Sep 2005 13:10:28 -0700 Subject: [PATCH] FUSE - read-only operations This patch adds the read-only filesystem operations of FUSE. This contains the following files: o dir.c - directory, symlink and file-inode operations The following operations are added: o lookup o getattr o readlink o follow_link o directory open o readdir o directory release o permission o dentry revalidate o statfs Signed-off-by: Miklos Szeredi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fuse.h | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) (limited to 'include') diff --git a/include/linux/fuse.h b/include/linux/fuse.h index a1aebd7104c4..21b9ba16f8d5 100644 --- a/include/linux/fuse.h +++ b/include/linux/fuse.h @@ -42,13 +42,61 @@ struct fuse_attr { __u32 rdev; }; +struct fuse_kstatfs { + __u64 blocks; + __u64 bfree; + __u64 bavail; + __u64 files; + __u64 ffree; + __u32 bsize; + __u32 namelen; +}; + enum fuse_opcode { + FUSE_LOOKUP = 1, + FUSE_FORGET = 2, /* no reply */ + FUSE_GETATTR = 3, + FUSE_READLINK = 5, + FUSE_GETDIR = 7, + FUSE_STATFS = 17, FUSE_INIT = 26 }; /* Conservative buffer size for the client */ #define FUSE_MAX_IN 8192 +#define FUSE_NAME_MAX 1024 + +struct fuse_entry_out { + __u64 nodeid; /* Inode ID */ + __u64 generation; /* Inode generation: nodeid:gen must + be unique for the fs's lifetime */ + __u64 entry_valid; /* Cache timeout for the name */ + __u64 attr_valid; /* Cache timeout for the attributes */ + __u32 entry_valid_nsec; + __u32 attr_valid_nsec; + struct fuse_attr attr; +}; + +struct fuse_forget_in { + __u64 version; +}; + +struct fuse_attr_out { + __u64 attr_valid; /* Cache timeout for the attributes */ + __u32 attr_valid_nsec; + __u32 dummy; + struct fuse_attr attr; +}; + +struct fuse_getdir_out { + __u32 fd; +}; + +struct fuse_statfs_out { + struct fuse_kstatfs st; +}; + struct fuse_init_in_out { __u32 major; __u32 minor; @@ -70,3 +118,15 @@ struct fuse_out_header { __u64 unique; }; +struct fuse_dirent { + __u64 ino; + __u64 off; + __u32 namelen; + __u32 type; + char name[0]; +}; + +#define FUSE_NAME_OFFSET ((unsigned) ((struct fuse_dirent *) 0)->name) +#define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1)) +#define FUSE_DIRENT_SIZE(d) \ + FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen) -- cgit v1.2.3 From 9e6268db496a2592e89457537ea54a496feabb77 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 9 Sep 2005 13:10:29 -0700 Subject: [PATCH] FUSE - read-write operations This patch adds the write filesystem operations of FUSE. The following operations are added: o setattr o symlink o mknod o mkdir o create o unlink o rmdir o rename o link Signed-off-by: Miklos Szeredi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fuse.h | 43 +++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 41 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/fuse.h b/include/linux/fuse.h index 21b9ba16f8d5..19d69a3e1623 100644 --- a/include/linux/fuse.h +++ b/include/linux/fuse.h @@ -11,7 +11,7 @@ #include /** Version number of this interface */ -#define FUSE_KERNEL_VERSION 6 +#define FUSE_KERNEL_VERSION 7 /** Minor version number of this interface */ #define FUSE_KERNEL_MINOR_VERSION 1 @@ -52,12 +52,28 @@ struct fuse_kstatfs { __u32 namelen; }; +#define FATTR_MODE (1 << 0) +#define FATTR_UID (1 << 1) +#define FATTR_GID (1 << 2) +#define FATTR_SIZE (1 << 3) +#define FATTR_ATIME (1 << 4) +#define FATTR_MTIME (1 << 5) +#define FATTR_CTIME (1 << 6) + enum fuse_opcode { FUSE_LOOKUP = 1, FUSE_FORGET = 2, /* no reply */ FUSE_GETATTR = 3, + FUSE_SETATTR = 4, FUSE_READLINK = 5, + FUSE_SYMLINK = 6, FUSE_GETDIR = 7, + FUSE_MKNOD = 8, + FUSE_MKDIR = 9, + FUSE_UNLINK = 10, + FUSE_RMDIR = 11, + FUSE_RENAME = 12, + FUSE_LINK = 13, FUSE_STATFS = 17, FUSE_INIT = 26 }; @@ -66,6 +82,7 @@ enum fuse_opcode { #define FUSE_MAX_IN 8192 #define FUSE_NAME_MAX 1024 +#define FUSE_SYMLINK_MAX 4096 struct fuse_entry_out { __u64 nodeid; /* Inode ID */ @@ -79,7 +96,7 @@ struct fuse_entry_out { }; struct fuse_forget_in { - __u64 version; + __u64 nlookup; }; struct fuse_attr_out { @@ -93,6 +110,28 @@ struct fuse_getdir_out { __u32 fd; }; +struct fuse_mknod_in { + __u32 mode; + __u32 rdev; +}; + +struct fuse_mkdir_in { + __u32 mode; +}; + +struct fuse_rename_in { + __u64 newdir; +}; + +struct fuse_link_in { + __u64 oldnodeid; +}; + +struct fuse_setattr_in { + __u32 valid; + struct fuse_attr attr; +}; + struct fuse_statfs_out { struct fuse_kstatfs st; }; -- cgit v1.2.3 From b6aeadeda22a9aa322fdfcd3f4c69ccf0da5cbdd Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 9 Sep 2005 13:10:30 -0700 Subject: [PATCH] FUSE - file operations This patch adds the file operations of FUSE. The following operations are added: o open o flush o release o fsync o readpage o commit_write Signed-off-by: Miklos Szeredi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fuse.h | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) (limited to 'include') diff --git a/include/linux/fuse.h b/include/linux/fuse.h index 19d69a3e1623..61f34636ffbc 100644 --- a/include/linux/fuse.h +++ b/include/linux/fuse.h @@ -74,7 +74,13 @@ enum fuse_opcode { FUSE_RMDIR = 11, FUSE_RENAME = 12, FUSE_LINK = 13, + FUSE_OPEN = 14, + FUSE_READ = 15, + FUSE_WRITE = 16, FUSE_STATFS = 17, + FUSE_RELEASE = 18, + FUSE_FSYNC = 20, + FUSE_FLUSH = 25, FUSE_INIT = 26 }; @@ -132,10 +138,51 @@ struct fuse_setattr_in { struct fuse_attr attr; }; +struct fuse_open_in { + __u32 flags; +}; + +struct fuse_open_out { + __u64 fh; + __u32 open_flags; +}; + +struct fuse_release_in { + __u64 fh; + __u32 flags; +}; + +struct fuse_flush_in { + __u64 fh; + __u32 flush_flags; +}; + +struct fuse_read_in { + __u64 fh; + __u64 offset; + __u32 size; +}; + +struct fuse_write_in { + __u64 fh; + __u64 offset; + __u32 size; + __u32 write_flags; +}; + +struct fuse_write_out { + __u32 size; +}; + struct fuse_statfs_out { struct fuse_kstatfs st; }; +struct fuse_fsync_in { + __u64 fh; + __u32 fsync_flags; +}; + struct fuse_init_in_out { __u32 major; __u32 minor; -- cgit v1.2.3 From 92a8780e1136c5ca0c7ed940000d399943d1576e Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 9 Sep 2005 13:10:31 -0700 Subject: [PATCH] FUSE - extended attribute operations This patch adds the extended attribute operations to FUSE. The following operations are added: o getxattr o setxattr o listxattr o removexattr Signed-off-by: Miklos Szeredi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fuse.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'include') diff --git a/include/linux/fuse.h b/include/linux/fuse.h index 61f34636ffbc..bf564edf9905 100644 --- a/include/linux/fuse.h +++ b/include/linux/fuse.h @@ -80,6 +80,10 @@ enum fuse_opcode { FUSE_STATFS = 17, FUSE_RELEASE = 18, FUSE_FSYNC = 20, + FUSE_SETXATTR = 21, + FUSE_GETXATTR = 22, + FUSE_LISTXATTR = 23, + FUSE_REMOVEXATTR = 24, FUSE_FLUSH = 25, FUSE_INIT = 26 }; @@ -89,6 +93,7 @@ enum fuse_opcode { #define FUSE_NAME_MAX 1024 #define FUSE_SYMLINK_MAX 4096 +#define FUSE_XATTR_SIZE_MAX 4096 struct fuse_entry_out { __u64 nodeid; /* Inode ID */ @@ -183,6 +188,19 @@ struct fuse_fsync_in { __u32 fsync_flags; }; +struct fuse_setxattr_in { + __u32 size; + __u32 flags; +}; + +struct fuse_getxattr_in { + __u32 size; +}; + +struct fuse_getxattr_out { + __u32 size; +}; + struct fuse_init_in_out { __u32 major; __u32 minor; -- cgit v1.2.3 From 06663267b4b1e85ece73236ea720355668d4f736 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 9 Sep 2005 13:10:32 -0700 Subject: [PATCH] FUSE: add padding Add padding to structures to make sizes the same on 32bit and 64bit archs. Initial testing and test machine generously provided by Franco Broi. Signed-off-by: Miklos Szeredi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fuse.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include') diff --git a/include/linux/fuse.h b/include/linux/fuse.h index bf564edf9905..e9b814e16c58 100644 --- a/include/linux/fuse.h +++ b/include/linux/fuse.h @@ -25,6 +25,9 @@ /** The minor number of the fuse character device */ #define FUSE_MINOR 229 +/* Make sure all structures are padded to 64bit boundary, so 32bit + userspace works under 64bit kernels */ + struct fuse_attr { __u64 ino; __u64 size; @@ -128,6 +131,7 @@ struct fuse_mknod_in { struct fuse_mkdir_in { __u32 mode; + __u32 padding; }; struct fuse_rename_in { @@ -140,32 +144,38 @@ struct fuse_link_in { struct fuse_setattr_in { __u32 valid; + __u32 padding; struct fuse_attr attr; }; struct fuse_open_in { __u32 flags; + __u32 padding; }; struct fuse_open_out { __u64 fh; __u32 open_flags; + __u32 padding; }; struct fuse_release_in { __u64 fh; __u32 flags; + __u32 padding; }; struct fuse_flush_in { __u64 fh; __u32 flush_flags; + __u32 padding; }; struct fuse_read_in { __u64 fh; __u64 offset; __u32 size; + __u32 padding; }; struct fuse_write_in { @@ -177,6 +187,7 @@ struct fuse_write_in { struct fuse_write_out { __u32 size; + __u32 padding; }; struct fuse_statfs_out { @@ -186,6 +197,7 @@ struct fuse_statfs_out { struct fuse_fsync_in { __u64 fh; __u32 fsync_flags; + __u32 padding; }; struct fuse_setxattr_in { @@ -195,10 +207,12 @@ struct fuse_setxattr_in { struct fuse_getxattr_in { __u32 size; + __u32 padding; }; struct fuse_getxattr_out { __u32 size; + __u32 padding; }; struct fuse_init_in_out { @@ -214,6 +228,7 @@ struct fuse_in_header { __u32 uid; __u32 gid; __u32 pid; + __u32 padding; }; struct fuse_out_header { -- cgit v1.2.3 From 04730fef1f9c7277e5c730b193e681ac095b0507 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 9 Sep 2005 13:10:36 -0700 Subject: [PATCH] fuse: transfer readdir data through device This patch removes a long lasting "hack" in FUSE, which used a separate channel (a file descriptor refering to a disk-file) to transfer directory contents from userspace to the kernel. The patch adds three new operations (OPENDIR, READDIR, RELEASEDIR), which have semantics and implementation exactly maching the respective file operations (OPEN, READ, RELEASE). This simplifies the directory reading code. Also disk space is not necessary, which can be important in embedded systems. Signed-off-by: Miklos Szeredi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fuse.h | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) (limited to 'include') diff --git a/include/linux/fuse.h b/include/linux/fuse.h index e9b814e16c58..cdfaa51b9018 100644 --- a/include/linux/fuse.h +++ b/include/linux/fuse.h @@ -70,7 +70,6 @@ enum fuse_opcode { FUSE_SETATTR = 4, FUSE_READLINK = 5, FUSE_SYMLINK = 6, - FUSE_GETDIR = 7, FUSE_MKNOD = 8, FUSE_MKDIR = 9, FUSE_UNLINK = 10, @@ -88,7 +87,10 @@ enum fuse_opcode { FUSE_LISTXATTR = 23, FUSE_REMOVEXATTR = 24, FUSE_FLUSH = 25, - FUSE_INIT = 26 + FUSE_INIT = 26, + FUSE_OPENDIR = 27, + FUSE_READDIR = 28, + FUSE_RELEASEDIR = 29 }; /* Conservative buffer size for the client */ @@ -120,10 +122,6 @@ struct fuse_attr_out { struct fuse_attr attr; }; -struct fuse_getdir_out { - __u32 fd; -}; - struct fuse_mknod_in { __u32 mode; __u32 rdev; -- cgit v1.2.3 From 45323fb76465a9576220c7427dbac7b1e7ad3caf Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 9 Sep 2005 13:10:37 -0700 Subject: [PATCH] fuse: more flexible caching Make data caching behavior selectable on a per-open basis instead of per-mount. Compatibility for the old mount options 'kernel_cache' and 'direct_io' is retained in the userspace library (version 2.4.0-pre1 or later). Signed-off-by: Miklos Szeredi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fuse.h | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/fuse.h b/include/linux/fuse.h index cdfaa51b9018..c65124a213a1 100644 --- a/include/linux/fuse.h +++ b/include/linux/fuse.h @@ -14,7 +14,7 @@ #define FUSE_KERNEL_VERSION 7 /** Minor version number of this interface */ -#define FUSE_KERNEL_MINOR_VERSION 1 +#define FUSE_KERNEL_MINOR_VERSION 2 /** The node ID of the root inode */ #define FUSE_ROOT_ID 1 @@ -63,6 +63,15 @@ struct fuse_kstatfs { #define FATTR_MTIME (1 << 5) #define FATTR_CTIME (1 << 6) +/** + * Flags returned by the OPEN request + * + * FOPEN_DIRECT_IO: bypass page cache for this open file + * FOPEN_KEEP_CACHE: don't invalidate the data cache on open + */ +#define FOPEN_DIRECT_IO (1 << 0) +#define FOPEN_KEEP_CACHE (1 << 1) + enum fuse_opcode { FUSE_LOOKUP = 1, FUSE_FORGET = 2, /* no reply */ -- cgit v1.2.3 From 8254798199332966e2ab647380c990193af7e854 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 9 Sep 2005 13:10:38 -0700 Subject: [PATCH] FUSE: add fsync operation for directories This patch adds a new FSYNCDIR request, which is sent when fsync is called on directories. This operation is available in libfuse 2.3-pre1 or greater. Signed-off-by: Miklos Szeredi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fuse.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/fuse.h b/include/linux/fuse.h index c65124a213a1..acbeb96a3353 100644 --- a/include/linux/fuse.h +++ b/include/linux/fuse.h @@ -99,7 +99,8 @@ enum fuse_opcode { FUSE_INIT = 26, FUSE_OPENDIR = 27, FUSE_READDIR = 28, - FUSE_RELEASEDIR = 29 + FUSE_RELEASEDIR = 29, + FUSE_FSYNCDIR = 30 }; /* Conservative buffer size for the client */ -- cgit v1.2.3 From 8d06afab73a75f40ae2864e6c296356bab1ab473 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Fri, 9 Sep 2005 13:10:40 -0700 Subject: [PATCH] timer initialization cleanup: DEFINE_TIMER Clean up timer initialization by introducing DEFINE_TIMER a'la DEFINE_SPINLOCK. Build and boot-tested on x86. A similar patch has been been in the -RT tree for some time. Signed-off-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/timer.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include') diff --git a/include/linux/timer.h b/include/linux/timer.h index 221f81ac2002..3340f3bd135d 100644 --- a/include/linux/timer.h +++ b/include/linux/timer.h @@ -32,6 +32,10 @@ extern struct timer_base_s __init_timer_base; .magic = TIMER_MAGIC, \ } +#define DEFINE_TIMER(_name, _function, _expires, _data) \ + struct timer_list _name = \ + TIMER_INITIALIZER(_function, _expires, _data) + void fastcall init_timer(struct timer_list * timer); /*** -- cgit v1.2.3 From fbed8eee70cf7e11fbf231afafc0ccb313acc62e Mon Sep 17 00:00:00 2001 From: Hal Rosenstock Date: Fri, 9 Sep 2005 15:24:04 -0700 Subject: [PATCH] IB: Move SA attributes to ib_sa.h SA: Move SA attributes to ib_sa.h so are accessible to more than sa_query.c. Also, remove deprecated attributes and add one missing one. Signed-off-by: Hal Rosenstock Signed-off-by: Roland Dreier --- include/rdma/ib_sa.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'include') diff --git a/include/rdma/ib_sa.h b/include/rdma/ib_sa.h index 0f4f5ec85e82..a7555c800ecf 100644 --- a/include/rdma/ib_sa.h +++ b/include/rdma/ib_sa.h @@ -53,6 +53,31 @@ enum { IB_SA_METHOD_GET_TRACE_TBL = 0x13 }; +enum { + IB_SA_ATTR_CLASS_PORTINFO = 0x01, + IB_SA_ATTR_NOTICE = 0x02, + IB_SA_ATTR_INFORM_INFO = 0x03, + IB_SA_ATTR_NODE_REC = 0x11, + IB_SA_ATTR_PORT_INFO_REC = 0x12, + IB_SA_ATTR_SL2VL_REC = 0x13, + IB_SA_ATTR_SWITCH_REC = 0x14, + IB_SA_ATTR_LINEAR_FDB_REC = 0x15, + IB_SA_ATTR_RANDOM_FDB_REC = 0x16, + IB_SA_ATTR_MCAST_FDB_REC = 0x17, + IB_SA_ATTR_SM_INFO_REC = 0x18, + IB_SA_ATTR_LINK_REC = 0x20, + IB_SA_ATTR_GUID_INFO_REC = 0x30, + IB_SA_ATTR_SERVICE_REC = 0x31, + IB_SA_ATTR_PARTITION_REC = 0x33, + IB_SA_ATTR_PATH_REC = 0x35, + IB_SA_ATTR_VL_ARB_REC = 0x36, + IB_SA_ATTR_MC_MEMBER_REC = 0x38, + IB_SA_ATTR_TRACE_REC = 0x39, + IB_SA_ATTR_MULTI_PATH_REC = 0x3a, + IB_SA_ATTR_SERVICE_ASSOC_REC = 0x3b, + IB_SA_ATTR_INFORM_INFO_REC = 0xf3 +}; + enum ib_sa_selector { IB_SA_GTE = 0, IB_SA_LTE = 1, -- cgit v1.2.3 From 9c8550ee25e26d14a8f0fe1b761a676e23fe3cf0 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 9 Sep 2005 15:43:46 -0700 Subject: Remove "must_check" attributes in PCI-land Don't just irritate all other kernel developers. Fix the users first, then you can re-introduce the must-check infrastructure to avoid new cases creeping in. Signed-off-by: Linus Torvalds --- include/linux/pci.h | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'include') diff --git a/include/linux/pci.h b/include/linux/pci.h index e5e24e13a114..7349058ed778 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -380,16 +380,16 @@ static inline int pci_write_config_dword(struct pci_dev *dev, int where, u32 val return pci_bus_write_config_dword (dev->bus, dev->devfn, where, val); } -int __must_check pci_enable_device(struct pci_dev *dev); -int __must_check pci_enable_device_bars(struct pci_dev *dev, int mask); +int pci_enable_device(struct pci_dev *dev); +int pci_enable_device_bars(struct pci_dev *dev, int mask); void pci_disable_device(struct pci_dev *dev); void pci_set_master(struct pci_dev *dev); #define HAVE_PCI_SET_MWI -int __must_check pci_set_mwi(struct pci_dev *dev); +int pci_set_mwi(struct pci_dev *dev); void pci_clear_mwi(struct pci_dev *dev); void pci_intx(struct pci_dev *dev, int enable); -int __must_check pci_set_dma_mask(struct pci_dev *dev, u64 mask); -int __must_check pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask); +int pci_set_dma_mask(struct pci_dev *dev, u64 mask); +int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask); void pci_update_resource(struct pci_dev *dev, struct resource *res, int resno); int pci_assign_resource(struct pci_dev *dev, int i); void pci_restore_bars(struct pci_dev *dev); @@ -403,9 +403,9 @@ void pci_remove_rom(struct pci_dev *pdev); /* Power management related routines */ int pci_save_state(struct pci_dev *dev); int pci_restore_state(struct pci_dev *dev); -int __must_check pci_set_power_state(struct pci_dev *dev, pci_power_t state); -pci_power_t __must_check pci_choose_state(struct pci_dev *dev, pm_message_t state); -int __must_check pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable); +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); +int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable); /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ void pci_bus_assign_resources(struct pci_bus *bus); -- cgit v1.2.3 From 2e9f7cb7869059e55cd91f5e23c6380f3763db56 Mon Sep 17 00:00:00 2001 From: Roland Dreier Date: Fri, 9 Sep 2005 15:45:57 -0700 Subject: [PATCH] IB: Add struct for ClassPortInfo Add structure definition for ClassPortInfo format. This is needed for (at least) handling CM redirects. Signed-off-by: Roland Dreier --- include/rdma/ib_mad.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'include') diff --git a/include/rdma/ib_mad.h b/include/rdma/ib_mad.h index fc6b1c18ffc6..53184a38fdf6 100644 --- a/include/rdma/ib_mad.h +++ b/include/rdma/ib_mad.h @@ -173,6 +173,27 @@ struct ib_vendor_mad { u8 data[216]; }; +struct ib_class_port_info +{ + u8 base_version; + u8 class_version; + __be16 capability_mask; + u8 reserved[3]; + u8 resp_time_value; + u8 redirect_gid[16]; + __be32 redirect_tcslfl; + __be16 redirect_lid; + __be16 redirect_pkey; + __be32 redirect_qp; + __be32 redirect_qkey; + u8 trap_gid[16]; + __be32 trap_tcslfl; + __be16 trap_lid; + __be16 trap_pkey; + __be32 trap_hlqp; + __be32 trap_qkey; +}; + /** * ib_mad_send_buf - MAD data buffer and work request for sends. * @mad: References an allocated MAD data buffer. The size of the data -- cgit v1.2.3 From 63aaf647529e8a56bdf31fd8f2979d4371c6a332 Mon Sep 17 00:00:00 2001 From: Roland Dreier Date: Fri, 9 Sep 2005 15:55:08 -0700 Subject: Make sure that userspace does not retrieve stale asynchronous or completion events after destroying a CQ, QP or SRQ. We do this by sweeping the event lists before returning from a destroy calls, and then return the number of events already reported before the destroy call. This allows userspace wait until it has processed all events for an object returned from the kernel before it frees its context for the object. The ABI of the destroy CQ, destroy QP and destroy SRQ commands has to change to return the event count, so bump the ABI version from 1 to 2. The userspace libibverbs library has already been updated to handle both the old and new ABI versions. Signed-off-by: Roland Dreier --- include/rdma/ib_user_verbs.h | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/rdma/ib_user_verbs.h b/include/rdma/ib_user_verbs.h index 7ebb01c8f996..fd85725391a4 100644 --- a/include/rdma/ib_user_verbs.h +++ b/include/rdma/ib_user_verbs.h @@ -42,7 +42,7 @@ * Increment this value if any changes that break userspace ABI * compatibility are made. */ -#define IB_USER_VERBS_ABI_VERSION 1 +#define IB_USER_VERBS_ABI_VERSION 2 enum { IB_USER_VERBS_CMD_QUERY_PARAMS, @@ -292,7 +292,14 @@ struct ib_uverbs_create_cq_resp { }; struct ib_uverbs_destroy_cq { + __u64 response; __u32 cq_handle; + __u32 reserved; +}; + +struct ib_uverbs_destroy_cq_resp { + __u32 comp_events_reported; + __u32 async_events_reported; }; struct ib_uverbs_create_qp { @@ -372,7 +379,13 @@ struct ib_uverbs_modify_qp_resp { }; struct ib_uverbs_destroy_qp { + __u64 response; __u32 qp_handle; + __u32 reserved; +}; + +struct ib_uverbs_destroy_qp_resp { + __u32 events_reported; }; struct ib_uverbs_attach_mcast { @@ -416,7 +429,13 @@ struct ib_uverbs_modify_srq { }; struct ib_uverbs_destroy_srq { + __u64 response; __u32 srq_handle; + __u32 reserved; +}; + +struct ib_uverbs_destroy_srq_resp { + __u32 events_reported; }; #endif /* IB_USER_VERBS_H */ -- cgit v1.2.3 From 36fa30636fb84b209210299684e1be66d9e58217 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Fri, 9 Sep 2005 16:23:45 -0700 Subject: [PATCH] md: all hot-add and hot-remove of md intent logging bitmaps Both file-bitmaps and superblock bitmaps are supported. If you add a bitmap file on the array device, you lose. This introduces a 'default_bitmap_offset' field in mddev, as the ioctl used for adding a superblock bitmap doesn't have room for giving an offset. Later, this value will be setable via sysfs. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/raid/md_k.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include') diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h index 8c14ba565a45..817062bf7352 100644 --- a/include/linux/raid/md_k.h +++ b/include/linux/raid/md_k.h @@ -278,6 +278,10 @@ struct mddev_s * start of bitmap. May be * negative, but not '0' */ + long default_bitmap_offset; /* this is the offset to use when + * hot-adding a bitmap. It should + * eventually be settable by sysfs. + */ struct list_head all_mddevs; }; @@ -314,6 +318,12 @@ struct mdk_personality_s int (*resize) (mddev_t *mddev, sector_t sectors); int (*reshape) (mddev_t *mddev, int raid_disks); int (*reconfig) (mddev_t *mddev, int layout, int chunk_size); + /* quiesce moves between quiescence states + * 0 - fully active + * 1 - no new requests allowed + * others - reserved + */ + void (*quiesce) (mddev_t *mddev, int state); }; -- cgit v1.2.3 From 8ddf9efe6708f3674f0ddfeb6425fd27bea109a2 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Fri, 9 Sep 2005 16:23:45 -0700 Subject: [PATCH] md: support write-mostly device in raid1 This allows a device in a raid1 to be marked as "write mostly". Read requests will only be sent if there is no other option. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/raid/md_k.h | 3 +++ include/linux/raid/md_p.h | 11 +++++++++-- 2 files changed, 12 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h index 817062bf7352..7ef78e15ce04 100644 --- a/include/linux/raid/md_k.h +++ b/include/linux/raid/md_k.h @@ -181,6 +181,9 @@ struct mdk_rdev_s int faulty; /* if faulty do not issue IO requests */ int in_sync; /* device is a full member of the array */ + unsigned long flags; /* Should include faulty and in_sync here. */ +#define WriteMostly 4 /* Avoid reading if at all possible */ + int desc_nr; /* descriptor index in the superblock */ int raid_disk; /* role of device in array */ int saved_raid_disk; /* role that device used to have in the diff --git a/include/linux/raid/md_p.h b/include/linux/raid/md_p.h index dc65cd435494..4f047f84fb1f 100644 --- a/include/linux/raid/md_p.h +++ b/include/linux/raid/md_p.h @@ -79,6 +79,11 @@ #define MD_DISK_SYNC 2 /* disk is in sync with the raid set */ #define MD_DISK_REMOVED 3 /* disk is in sync with the raid set */ +#define MD_DISK_WRITEMOSTLY 9 /* disk is "write-mostly" is RAID1 config. + * read requests will only be sent here in + * dire need + */ + typedef struct mdp_device_descriptor_s { __u32 number; /* 0 Device number in the entire set */ __u32 major; /* 1 Device major number */ @@ -193,7 +198,7 @@ struct mdp_superblock_1 { __u64 ctime; /* lo 40 bits are seconds, top 24 are microseconds or 0*/ __u32 level; /* -4 (multipath), -1 (linear), 0,1,4,5 */ - __u32 layout; /* only for raid5 currently */ + __u32 layout; /* only for raid5 and raid10 currently */ __u64 size; /* used size of component devices, in 512byte sectors */ __u32 chunksize; /* in 512byte sectors */ @@ -212,7 +217,9 @@ struct mdp_superblock_1 { __u32 dev_number; /* permanent identifier of this device - not role in raid */ __u32 cnt_corrected_read; /* number of read errors that were corrected by re-writing */ __u8 device_uuid[16]; /* user-space setable, ignored by kernel */ - __u8 pad2[64-56]; /* set to 0 when writing */ + __u8 devflags; /* per-device flags. Only one defined...*/ +#define WriteMostly1 1 /* mask for writemostly flag in above */ + __u8 pad2[64-57]; /* set to 0 when writing */ /* array state information - 64 bytes */ __u64 utime; /* 40 bits second, 24 btes microseconds */ -- cgit v1.2.3 From 4b6d287f627b5fb6a49f78f9e81649ff98c62bb7 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Fri, 9 Sep 2005 16:23:47 -0700 Subject: [PATCH] md: add write-behind support for md/raid1 If a device is flagged 'WriteMostly' and the array has a bitmap, and the bitmap superblock indicates that write_behind is allowed, then write_behind is enabled for WriteMostly devices. Write requests will be acknowledges as complete to the caller (via b_end_io) when all non-WriteMostly devices have completed the write, but will not be cleared from the bitmap until all devices complete. This requires memory allocation to make a local copy of the data being written. If there is insufficient memory, then we fall-back on normal write semantics. Signed-Off-By: Paul Clements Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/raid/bitmap.h | 15 ++++++++++----- include/linux/raid/md_k.h | 3 +++ include/linux/raid/raid1.h | 13 +++++++++++++ 3 files changed, 26 insertions(+), 5 deletions(-) (limited to 'include') diff --git a/include/linux/raid/bitmap.h b/include/linux/raid/bitmap.h index 4bf1659f8aa8..9de99198caf1 100644 --- a/include/linux/raid/bitmap.h +++ b/include/linux/raid/bitmap.h @@ -7,7 +7,7 @@ #define BITMAP_H 1 #define BITMAP_MAJOR 3 -#define BITMAP_MINOR 38 +#define BITMAP_MINOR 39 /* * in-memory bitmap: @@ -147,8 +147,9 @@ typedef struct bitmap_super_s { __u32 state; /* 48 bitmap state information */ __u32 chunksize; /* 52 the bitmap chunk size in bytes */ __u32 daemon_sleep; /* 56 seconds between disk flushes */ + __u32 write_behind; /* 60 number of outstanding write-behind writes */ - __u8 pad[256 - 60]; /* set to zero */ + __u8 pad[256 - 64]; /* set to zero */ } bitmap_super_t; /* notes: @@ -226,6 +227,9 @@ struct bitmap { unsigned long flags; + unsigned long max_write_behind; /* write-behind mode */ + atomic_t behind_writes; + /* * the bitmap daemon - periodically wakes up and sweeps the bitmap * file, cleaning up bits and flushing out pages to disk as necessary @@ -260,9 +264,10 @@ int bitmap_setallbits(struct bitmap *bitmap); void bitmap_write_all(struct bitmap *bitmap); /* these are exported */ -int bitmap_startwrite(struct bitmap *bitmap, sector_t offset, unsigned long sectors); -void bitmap_endwrite(struct bitmap *bitmap, sector_t offset, unsigned long sectors, - int success); +int bitmap_startwrite(struct bitmap *bitmap, sector_t offset, + unsigned long sectors, int behind); +void bitmap_endwrite(struct bitmap *bitmap, sector_t offset, + unsigned long sectors, int success, int behind); int bitmap_start_sync(struct bitmap *bitmap, sector_t offset, int *blocks, int degraded); void bitmap_end_sync(struct bitmap *bitmap, sector_t offset, int *blocks, int aborted); void bitmap_close_sync(struct bitmap *bitmap); diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h index 7ef78e15ce04..2514e5fcda7f 100644 --- a/include/linux/raid/md_k.h +++ b/include/linux/raid/md_k.h @@ -275,6 +275,9 @@ struct mddev_s atomic_t writes_pending; request_queue_t *queue; /* for plugging ... */ + atomic_t write_behind; /* outstanding async IO */ + unsigned int max_write_behind; /* 0 = sync */ + struct bitmap *bitmap; /* the bitmap for the device */ struct file *bitmap_file; /* the bitmap file */ long bitmap_offset; /* offset from superblock of diff --git a/include/linux/raid/raid1.h b/include/linux/raid/raid1.h index 9d93cf12e890..60e19b667548 100644 --- a/include/linux/raid/raid1.h +++ b/include/linux/raid/raid1.h @@ -80,6 +80,9 @@ struct r1bio_s { atomic_t remaining; /* 'have we finished' count, * used from IRQ handlers */ + atomic_t behind_remaining; /* number of write-behind ios remaining + * in this BehindIO request + */ sector_t sector; int sectors; unsigned long state; @@ -107,4 +110,14 @@ struct r1bio_s { #define R1BIO_Uptodate 0 #define R1BIO_IsSync 1 #define R1BIO_Degraded 2 +#define R1BIO_BehindIO 3 +/* For write-behind requests, we call bi_end_io when + * the last non-write-behind device completes, providing + * any write was successful. Otherwise we call when + * any write-behind write succeeds, otherwise we call + * with failure when last write completes (and all failed). + * Record that bi_end_io was called with this flag... + */ +#define R1BIO_Returned 4 + #endif -- cgit v1.2.3 From 15945fee6f09bff1f86b1a735b5888dc59cf38e3 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Fri, 9 Sep 2005 16:23:47 -0700 Subject: [PATCH] md: support md/linear array with components greater than 2 terabytes. linear currently uses division by the size of the smallest componenet device to find which device a request goes to. If that smallest device is larger than 2 terabytes, then the division will not work on some systems. So we introduce a pre-shift, and take care not to make the hash table too large, much like the code in raid0. Also get rid of conf->nr_zones, which is not needed. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/raid/linear.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/raid/linear.h b/include/linux/raid/linear.h index e04c4fe45b53..7eaf290e10e7 100644 --- a/include/linux/raid/linear.h +++ b/include/linux/raid/linear.h @@ -14,8 +14,8 @@ typedef struct dev_info dev_info_t; struct linear_private_data { dev_info_t **hash_table; - dev_info_t *smallest; - int nr_zones; + sector_t hash_spacing; + int preshift; /* shift before dividing by hash_spacing */ dev_info_t disks[0]; }; -- cgit v1.2.3 From 71c0805cb48462c99fbe0e5fcc6c12d7b9929c09 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Fri, 9 Sep 2005 16:23:51 -0700 Subject: [PATCH] md: allow md to load a superblock with feature-bit '1' set As this is used to flag an internal bitmap. Also, introduce symbolic names for feature bits. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/raid/md_p.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include') diff --git a/include/linux/raid/md_p.h b/include/linux/raid/md_p.h index 4f047f84fb1f..c100fa5d4bfa 100644 --- a/include/linux/raid/md_p.h +++ b/include/linux/raid/md_p.h @@ -238,5 +238,10 @@ struct mdp_superblock_1 { __u16 dev_roles[0]; /* role in array, or 0xffff for a spare, or 0xfffe for faulty */ }; +/* feature_map bits */ +#define MD_FEATURE_BITMAP_OFFSET 1 + +#define MD_FEATURE_ALL 1 + #endif -- cgit v1.2.3 From 773f7834425e83144c95fbbc553ced3c2b74b828 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Fri, 9 Sep 2005 16:23:53 -0700 Subject: [PATCH] md: remove old cruft from md_k.h header file These inlines haven't been used for ages, they should go. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/raid/md_k.h | 64 ----------------------------------------------- 1 file changed, 64 deletions(-) (limited to 'include') diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h index 2514e5fcda7f..8042f55dd323 100644 --- a/include/linux/raid/md_k.h +++ b/include/linux/raid/md_k.h @@ -85,70 +85,6 @@ typedef struct mdk_rdev_s mdk_rdev_t; #define MAX_CHUNK_SIZE (4096*1024) -/* - * default readahead - */ - -static inline int disk_faulty(mdp_disk_t * d) -{ - return d->state & (1 << MD_DISK_FAULTY); -} - -static inline int disk_active(mdp_disk_t * d) -{ - return d->state & (1 << MD_DISK_ACTIVE); -} - -static inline int disk_sync(mdp_disk_t * d) -{ - return d->state & (1 << MD_DISK_SYNC); -} - -static inline int disk_spare(mdp_disk_t * d) -{ - return !disk_sync(d) && !disk_active(d) && !disk_faulty(d); -} - -static inline int disk_removed(mdp_disk_t * d) -{ - return d->state & (1 << MD_DISK_REMOVED); -} - -static inline void mark_disk_faulty(mdp_disk_t * d) -{ - d->state |= (1 << MD_DISK_FAULTY); -} - -static inline void mark_disk_active(mdp_disk_t * d) -{ - d->state |= (1 << MD_DISK_ACTIVE); -} - -static inline void mark_disk_sync(mdp_disk_t * d) -{ - d->state |= (1 << MD_DISK_SYNC); -} - -static inline void mark_disk_spare(mdp_disk_t * d) -{ - d->state = 0; -} - -static inline void mark_disk_removed(mdp_disk_t * d) -{ - d->state = (1 << MD_DISK_FAULTY) | (1 << MD_DISK_REMOVED); -} - -static inline void mark_disk_inactive(mdp_disk_t * d) -{ - d->state &= ~(1 << MD_DISK_ACTIVE); -} - -static inline void mark_disk_nonsync(mdp_disk_t * d) -{ - d->state &= ~(1 << MD_DISK_SYNC); -} - /* * MD's 'extended' device */ -- cgit v1.2.3 From 0002b2718dd04da67c21f8a7830de8d95a9b0345 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Fri, 9 Sep 2005 16:23:53 -0700 Subject: [PATCH] md: limit size of sb read/written to appropriate amount version-1 superblocks are not (normally) 4K long, and can be of variable size. Writing the full 4K can cause corruption (but only in non-default configurations). With this patch the super-block-flavour can choose a size to read, and set a size to write based on what it finds. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/raid/md_k.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h index 8042f55dd323..ebce949b1443 100644 --- a/include/linux/raid/md_k.h +++ b/include/linux/raid/md_k.h @@ -102,6 +102,7 @@ struct mdk_rdev_s int sb_loaded; sector_t data_offset; /* start of data in array */ sector_t sb_offset; + int sb_size; /* bytes in the superblock */ int preferred_minor; /* autorun support */ /* A device can be in one of three states based on two flags: -- cgit v1.2.3 From 72626685dc66d455742a7f215a0535c551628b9e Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Fri, 9 Sep 2005 16:23:54 -0700 Subject: [PATCH] md: add write-intent-bitmap support to raid5 Most awkward part of this is delaying write requests until bitmap updates have been flushed. To achieve this, we have a sequence number (seq_flush) which is incremented each time the raid5 is unplugged. If the raid thread notices that this has changed, it flushes bitmap changes, and assigned the value of seq_flush to seq_write. When a write request arrives, it is given the number from seq_write, and that write request may not complete until seq_flush is larger than the saved seq number. We have a new queue for storing stripes which are waiting for a bitmap flush and an extra flag for stripes to record if the write was 'degraded' and so should not clear the a bit in the bitmap. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/raid/raid5.h | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/raid/raid5.h b/include/linux/raid/raid5.h index d63ddcb4afad..176fc653c284 100644 --- a/include/linux/raid/raid5.h +++ b/include/linux/raid/raid5.h @@ -134,6 +134,7 @@ struct stripe_head { unsigned long state; /* state flags */ atomic_t count; /* nr of active thread/requests */ spinlock_t lock; + int bm_seq; /* sequence number for bitmap flushes */ struct r5dev { struct bio req; struct bio_vec vec; @@ -165,12 +166,13 @@ struct stripe_head { /* * Stripe state */ -#define STRIPE_ERROR 1 #define STRIPE_HANDLE 2 #define STRIPE_SYNCING 3 #define STRIPE_INSYNC 4 #define STRIPE_PREREAD_ACTIVE 5 #define STRIPE_DELAYED 6 +#define STRIPE_DEGRADED 7 +#define STRIPE_BIT_DELAY 8 /* * Plugging: @@ -210,10 +212,20 @@ struct raid5_private_data { struct list_head handle_list; /* stripes needing handling */ struct list_head delayed_list; /* stripes that have plugged requests */ + struct list_head bitmap_list; /* stripes delaying awaiting bitmap update */ atomic_t preread_active_stripes; /* stripes with scheduled io */ char cache_name[20]; kmem_cache_t *slab_cache; /* for allocating stripes */ + + int seq_flush, seq_write; + int quiesce; + + int fullsync; /* set to 1 if a full sync is needed, + * (fresh device added). + * Cleared when a sync completes. + */ + /* * Free stripes pool */ -- cgit v1.2.3 From 354ba39cf96e439149541acf3c6c7c0df0a3ef25 Mon Sep 17 00:00:00 2001 From: John Kingman Date: Fri, 9 Sep 2005 18:23:32 -0700 Subject: [PATCH] IB CM: support CM redir Changes to CM to support CM and port redirection (REJ reason 24). Signed-off-by: John Kingman storagegear.com> Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier --- include/rdma/ib_cm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/rdma/ib_cm.h b/include/rdma/ib_cm.h index 77fe9039209b..5308683c8c41 100644 --- a/include/rdma/ib_cm.h +++ b/include/rdma/ib_cm.h @@ -290,6 +290,7 @@ struct ib_cm_id { enum ib_cm_lap_state lap_state; /* internal CM/debug use */ __be32 local_id; __be32 remote_id; + u32 remote_cm_qpn; /* 1 unless redirected */ }; /** -- cgit v1.2.3 From 9928890c1f94da58bf753ede937b7324f6832866 Mon Sep 17 00:00:00 2001 From: YOSHIFUJI Hideaki Date: Sat, 10 Sep 2005 11:26:34 +0900 Subject: [IPV6]: rearrange constants for new advanced API to solve conflicts. 64, 65 are already used in ip6_tables. Pointed out by Patrick McHardy . Signed-off-by: YOSHIFUJI Hideaki --- include/linux/in6.h | 42 ++++++++++++++++++++++-------------------- 1 file changed, 22 insertions(+), 20 deletions(-) (limited to 'include') diff --git a/include/linux/in6.h b/include/linux/in6.h index bd32b79d6295..50cdc3ad61a7 100644 --- a/include/linux/in6.h +++ b/include/linux/in6.h @@ -198,27 +198,29 @@ struct in6_flowlabel_req * MCAST_MSFILTER 48 */ -/* RFC3542 advanced socket options (50-67) */ -#define IPV6_RECVPKTINFO 50 -#define IPV6_PKTINFO 51 -#if 0 -#define IPV6_RECVPATHMTU 52 -#define IPV6_PATHMTU 53 -#define IPV6_DONTFRAG 54 -#define IPV6_USE_MIN_MTU 55 -#endif -#define IPV6_RECVHOPOPTS 56 -#define IPV6_HOPOPTS 57 -#if 0 -#define IPV6_RECVRTHDRDSTOPTS 58 /* Unused, see net/ipv6/datagram.c */ +/* + * Advanced API (RFC3542) (1) + * + * Note: IPV6_RECVRTHDRDSTOPTS does not exist. see net/ipv6/datagram.c. + */ + +#define IPV6_RECVPKTINFO 49 +#define IPV6_PKTINFO 50 +#define IPV6_RECVHOPLIMIT 51 +#define IPV6_HOPLIMIT 52 +#define IPV6_RECVHOPOPTS 53 +#define IPV6_HOPOPTS 54 +#define IPV6_RTHDRDSTOPTS 55 +#define IPV6_RECVRTHDR 56 +#define IPV6_RTHDR 57 +#define IPV6_RECVDSTOPTS 58 +#define IPV6_DSTOPTS 59 +#if 0 /* not yet */ +#define IPV6_RECVPATHMTU 60 +#define IPV6_PATHMTU 61 +#define IPV6_DONTFRAG 62 +#define IPV6_USE_MIN_MTU 63 #endif -#define IPV6_RTHDRDSTOPTS 59 -#define IPV6_RECVRTHDR 60 -#define IPV6_RTHDR 61 -#define IPV6_RECVDSTOPTS 62 -#define IPV6_DSTOPTS 63 -#define IPV6_RECVHOPLIMIT 64 -#define IPV6_HOPLIMIT 65 #define IPV6_RECVTCLASS 66 #define IPV6_TCLASS 67 -- cgit v1.2.3 From dd27466df9924706ae34639ce3f4f837875d45c1 Mon Sep 17 00:00:00 2001 From: YOSHIFUJI Hideaki Date: Sat, 10 Sep 2005 11:32:45 +0900 Subject: [IPV6]: Note values allocated for ip6_tables. To avoid future conflicts, add a note values allocated for ip6_tables. Signed-off-by: YOSHIFUJI Hideaki --- include/linux/in6.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'include') diff --git a/include/linux/in6.h b/include/linux/in6.h index 50cdc3ad61a7..304aaedea305 100644 --- a/include/linux/in6.h +++ b/include/linux/in6.h @@ -221,6 +221,20 @@ struct in6_flowlabel_req #define IPV6_DONTFRAG 62 #define IPV6_USE_MIN_MTU 63 #endif + +/* + * Netfilter + * + * Following socket options are used in ip6_tables; + * see include/linux/netfilter_ipv6/ip6_tables.h. + * + * IP6T_SO_SET_REPLACE / IP6T_SO_GET_INFO 64 + * IP6T_SO_SET_ADD_COUNTERS / IP6T_SO_GET_ENTRIES 65 + */ + +/* + * Advanced API (RFC3542) (2) + */ #define IPV6_RECVTCLASS 66 #define IPV6_TCLASS 67 -- cgit v1.2.3 From e6df439b89dbf9eb977c2dc6f7b0644be3704df4 Mon Sep 17 00:00:00 2001 From: Brian Haley Date: Sat, 10 Sep 2005 00:15:06 -0700 Subject: [IPV6]: Bring Type 0 routing header in-line with rfc3542. Signed-off-by: Brian Haley Signed-off-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller --- include/linux/ipv6.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h index 6c5f7b39a4b0..bb6f88e14061 100644 --- a/include/linux/ipv6.h +++ b/include/linux/ipv6.h @@ -68,7 +68,7 @@ struct ipv6_opt_hdr { struct rt0_hdr { struct ipv6_rt_hdr rt_hdr; - __u32 bitmap; /* strict/loose bit map */ + __u32 reserved; struct in6_addr addr[0]; #define rt0_type rt_hdr.type -- cgit v1.2.3 From fb1c8f93d869b34cacb8b8932e2b83d96a19d720 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Sat, 10 Sep 2005 00:25:56 -0700 Subject: [PATCH] spinlock consolidation This patch (written by me and also containing many suggestions of Arjan van de Ven) does a major cleanup of the spinlock code. It does the following things: - consolidates and enhances the spinlock/rwlock debugging code - simplifies the asm/spinlock.h files - encapsulates the raw spinlock type and moves generic spinlock features (such as ->break_lock) into the generic code. - cleans up the spinlock code hierarchy to get rid of the spaghetti. Most notably there's now only a single variant of the debugging code, located in lib/spinlock_debug.c. (previously we had one SMP debugging variant per architecture, plus a separate generic one for UP builds) Also, i've enhanced the rwlock debugging facility, it will now track write-owners. There is new spinlock-owner/CPU-tracking on SMP builds too. All locks have lockup detection now, which will work for both soft and hard spin/rwlock lockups. The arch-level include files now only contain the minimally necessary subset of the spinlock code - all the rest that can be generalized now lives in the generic headers: include/asm-i386/spinlock_types.h | 16 include/asm-x86_64/spinlock_types.h | 16 I have also split up the various spinlock variants into separate files, making it easier to see which does what. The new layout is: SMP | UP ----------------------------|----------------------------------- asm/spinlock_types_smp.h | linux/spinlock_types_up.h linux/spinlock_types.h | linux/spinlock_types.h asm/spinlock_smp.h | linux/spinlock_up.h linux/spinlock_api_smp.h | linux/spinlock_api_up.h linux/spinlock.h | linux/spinlock.h /* * here's the role of the various spinlock/rwlock related include files: * * on SMP builds: * * asm/spinlock_types.h: contains the raw_spinlock_t/raw_rwlock_t and the * initializers * * linux/spinlock_types.h: * defines the generic type and initializers * * asm/spinlock.h: contains the __raw_spin_*()/etc. lowlevel * implementations, mostly inline assembly code * * (also included on UP-debug builds:) * * linux/spinlock_api_smp.h: * contains the prototypes for the _spin_*() APIs. * * linux/spinlock.h: builds the final spin_*() APIs. * * on UP builds: * * linux/spinlock_type_up.h: * contains the generic, simplified UP spinlock type. * (which is an empty structure on non-debug builds) * * linux/spinlock_types.h: * defines the generic type and initializers * * linux/spinlock_up.h: * contains the __raw_spin_*()/etc. version of UP * builds. (which are NOPs on non-debug, non-preempt * builds) * * (included on UP-non-debug builds:) * * linux/spinlock_api_up.h: * builds the _spin_*() APIs. * * linux/spinlock.h: builds the final spin_*() APIs. */ All SMP and UP architectures are converted by this patch. arm, i386, ia64, ppc, ppc64, s390/s390x, x64 was build-tested via crosscompilers. m32r, mips, sh, sparc, have not been tested yet, but should be mostly fine. From: Grant Grundler Booted and lightly tested on a500-44 (64-bit, SMP kernel, dual CPU). Builds 32-bit SMP kernel (not booted or tested). I did not try to build non-SMP kernels. That should be trivial to fix up later if necessary. I converted bit ops atomic_hash lock to raw_spinlock_t. Doing so avoids some ugly nesting of linux/*.h and asm/*.h files. Those particular locks are well tested and contained entirely inside arch specific code. I do NOT expect any new issues to arise with them. If someone does ever need to use debug/metrics with them, then they will need to unravel this hairball between spinlocks, atomic ops, and bit ops that exist only because parisc has exactly one atomic instruction: LDCW (load and clear word). From: "Luck, Tony" ia64 fix Signed-off-by: Ingo Molnar Signed-off-by: Arjan van de Ven Signed-off-by: Grant Grundler Cc: Matthew Wilcox Signed-off-by: Hirokazu Takata Signed-off-by: Mikael Pettersson Signed-off-by: Benoit Boissinot Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-alpha/spinlock.h | 96 ++---- include/asm-alpha/spinlock_types.h | 20 ++ include/asm-arm/spinlock.h | 50 +-- include/asm-arm/spinlock_types.h | 20 ++ include/asm-i386/spinlock.h | 200 ++++------- include/asm-i386/spinlock_types.h | 20 ++ include/asm-ia64/spinlock.h | 69 ++-- include/asm-ia64/spinlock_types.h | 21 ++ include/asm-m32r/spinlock.h | 127 ++----- include/asm-m32r/spinlock_types.h | 23 ++ include/asm-mips/spinlock.h | 75 ++--- include/asm-mips/spinlock_types.h | 20 ++ include/asm-parisc/atomic.h | 12 +- include/asm-parisc/bitops.h | 2 +- include/asm-parisc/cacheflush.h | 1 + include/asm-parisc/processor.h | 1 + include/asm-parisc/spinlock.h | 163 ++------- include/asm-parisc/spinlock_types.h | 21 ++ include/asm-parisc/system.h | 24 +- include/asm-ppc/spinlock.h | 91 ++--- include/asm-ppc/spinlock_types.h | 20 ++ include/asm-ppc64/spinlock.h | 191 +++++------ include/asm-ppc64/spinlock_types.h | 20 ++ include/asm-s390/spinlock.h | 63 ++-- include/asm-s390/spinlock_types.h | 21 ++ include/asm-sh/spinlock.h | 61 ++-- include/asm-sh/spinlock_types.h | 22 ++ include/asm-sparc/spinlock.h | 140 ++------ include/asm-sparc/spinlock_types.h | 20 ++ include/asm-sparc64/spinlock.h | 160 ++------- include/asm-sparc64/spinlock_types.h | 20 ++ include/asm-x86_64/spinlock.h | 164 +++------ include/asm-x86_64/spinlock_types.h | 20 ++ include/linux/bit_spinlock.h | 77 +++++ include/linux/jbd.h | 1 + include/linux/spinlock.h | 627 +++++++---------------------------- include/linux/spinlock_api_smp.h | 57 ++++ include/linux/spinlock_api_up.h | 80 +++++ include/linux/spinlock_types.h | 67 ++++ include/linux/spinlock_types_up.h | 51 +++ include/linux/spinlock_up.h | 74 +++++ 41 files changed, 1289 insertions(+), 1723 deletions(-) create mode 100644 include/asm-alpha/spinlock_types.h create mode 100644 include/asm-arm/spinlock_types.h create mode 100644 include/asm-i386/spinlock_types.h create mode 100644 include/asm-ia64/spinlock_types.h create mode 100644 include/asm-m32r/spinlock_types.h create mode 100644 include/asm-mips/spinlock_types.h create mode 100644 include/asm-parisc/spinlock_types.h create mode 100644 include/asm-ppc/spinlock_types.h create mode 100644 include/asm-ppc64/spinlock_types.h create mode 100644 include/asm-s390/spinlock_types.h create mode 100644 include/asm-sh/spinlock_types.h create mode 100644 include/asm-sparc/spinlock_types.h create mode 100644 include/asm-sparc64/spinlock_types.h create mode 100644 include/asm-x86_64/spinlock_types.h create mode 100644 include/linux/bit_spinlock.h create mode 100644 include/linux/spinlock_api_smp.h create mode 100644 include/linux/spinlock_api_up.h create mode 100644 include/linux/spinlock_types.h create mode 100644 include/linux/spinlock_types_up.h create mode 100644 include/linux/spinlock_up.h (limited to 'include') diff --git a/include/asm-alpha/spinlock.h b/include/asm-alpha/spinlock.h index 80780dba9986..8197c69eff44 100644 --- a/include/asm-alpha/spinlock.h +++ b/include/asm-alpha/spinlock.h @@ -6,7 +6,6 @@ #include #include - /* * Simple spin lock operations. There are two variants, one clears IRQ's * on the local processor, one does not. @@ -14,43 +13,18 @@ * We make no fairness assumptions. They have a cost. */ -typedef struct { - volatile unsigned int lock; -#ifdef CONFIG_DEBUG_SPINLOCK - int on_cpu; - int line_no; - void *previous; - struct task_struct * task; - const char *base_file; -#endif -} spinlock_t; - -#ifdef CONFIG_DEBUG_SPINLOCK -#define SPIN_LOCK_UNLOCKED (spinlock_t){ 0, -1, 0, NULL, NULL, NULL } -#else -#define SPIN_LOCK_UNLOCKED (spinlock_t){ 0 } -#endif - -#define spin_lock_init(x) do { *(x) = SPIN_LOCK_UNLOCKED; } while(0) -#define spin_is_locked(x) ((x)->lock != 0) -#define spin_unlock_wait(x) do { barrier(); } while ((x)->lock) - -#ifdef CONFIG_DEBUG_SPINLOCK -extern void _raw_spin_unlock(spinlock_t * lock); -extern void debug_spin_lock(spinlock_t * lock, const char *, int); -extern int debug_spin_trylock(spinlock_t * lock, const char *, int); -#define _raw_spin_lock(LOCK) \ - debug_spin_lock(LOCK, __BASE_FILE__, __LINE__) -#define _raw_spin_trylock(LOCK) \ - debug_spin_trylock(LOCK, __BASE_FILE__, __LINE__) -#else -static inline void _raw_spin_unlock(spinlock_t * lock) +#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock) +#define __raw_spin_is_locked(x) ((x)->lock != 0) +#define __raw_spin_unlock_wait(x) \ + do { cpu_relax(); } while ((x)->lock) + +static inline void __raw_spin_unlock(raw_spinlock_t * lock) { mb(); lock->lock = 0; } -static inline void _raw_spin_lock(spinlock_t * lock) +static inline void __raw_spin_lock(raw_spinlock_t * lock) { long tmp; @@ -70,80 +44,64 @@ static inline void _raw_spin_lock(spinlock_t * lock) : "m"(lock->lock) : "memory"); } -static inline int _raw_spin_trylock(spinlock_t *lock) +static inline int __raw_spin_trylock(raw_spinlock_t *lock) { return !test_and_set_bit(0, &lock->lock); } -#endif /* CONFIG_DEBUG_SPINLOCK */ - -#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock) /***********************************************************/ -typedef struct { - volatile unsigned int lock; -} rwlock_t; - -#define RW_LOCK_UNLOCKED (rwlock_t){ 0 } - -#define rwlock_init(x) do { *(x) = RW_LOCK_UNLOCKED; } while(0) - -static inline int read_can_lock(rwlock_t *lock) +static inline int __raw_read_can_lock(raw_rwlock_t *lock) { return (lock->lock & 1) == 0; } -static inline int write_can_lock(rwlock_t *lock) +static inline int __raw_write_can_lock(raw_rwlock_t *lock) { return lock->lock == 0; } -#ifdef CONFIG_DEBUG_RWLOCK -extern void _raw_write_lock(rwlock_t * lock); -extern void _raw_read_lock(rwlock_t * lock); -#else -static inline void _raw_write_lock(rwlock_t * lock) +static inline void __raw_read_lock(raw_rwlock_t *lock) { long regx; __asm__ __volatile__( "1: ldl_l %1,%0\n" - " bne %1,6f\n" - " lda %1,1\n" + " blbs %1,6f\n" + " subl %1,2,%1\n" " stl_c %1,%0\n" " beq %1,6f\n" " mb\n" ".subsection 2\n" "6: ldl %1,%0\n" - " bne %1,6b\n" + " blbs %1,6b\n" " br 1b\n" ".previous" : "=m" (*lock), "=&r" (regx) : "m" (*lock) : "memory"); } -static inline void _raw_read_lock(rwlock_t * lock) +static inline void __raw_write_lock(raw_rwlock_t *lock) { long regx; __asm__ __volatile__( "1: ldl_l %1,%0\n" - " blbs %1,6f\n" - " subl %1,2,%1\n" + " bne %1,6f\n" + " lda %1,1\n" " stl_c %1,%0\n" " beq %1,6f\n" " mb\n" ".subsection 2\n" "6: ldl %1,%0\n" - " blbs %1,6b\n" + " bne %1,6b\n" " br 1b\n" ".previous" : "=m" (*lock), "=&r" (regx) : "m" (*lock) : "memory"); } -#endif /* CONFIG_DEBUG_RWLOCK */ -static inline int _raw_read_trylock(rwlock_t * lock) +static inline int __raw_read_trylock(raw_rwlock_t * lock) { long regx; int success; @@ -165,7 +123,7 @@ static inline int _raw_read_trylock(rwlock_t * lock) return success; } -static inline int _raw_write_trylock(rwlock_t * lock) +static inline int __raw_write_trylock(raw_rwlock_t * lock) { long regx; int success; @@ -187,13 +145,7 @@ static inline int _raw_write_trylock(rwlock_t * lock) return success; } -static inline void _raw_write_unlock(rwlock_t * lock) -{ - mb(); - lock->lock = 0; -} - -static inline void _raw_read_unlock(rwlock_t * lock) +static inline void __raw_read_unlock(raw_rwlock_t * lock) { long regx; __asm__ __volatile__( @@ -209,4 +161,10 @@ static inline void _raw_read_unlock(rwlock_t * lock) : "m" (*lock) : "memory"); } +static inline void __raw_write_unlock(raw_rwlock_t * lock) +{ + mb(); + lock->lock = 0; +} + #endif /* _ALPHA_SPINLOCK_H */ diff --git a/include/asm-alpha/spinlock_types.h b/include/asm-alpha/spinlock_types.h new file mode 100644 index 000000000000..8141eb5ebf0d --- /dev/null +++ b/include/asm-alpha/spinlock_types.h @@ -0,0 +1,20 @@ +#ifndef _ALPHA_SPINLOCK_TYPES_H +#define _ALPHA_SPINLOCK_TYPES_H + +#ifndef __LINUX_SPINLOCK_TYPES_H +# error "please don't include this file directly" +#endif + +typedef struct { + volatile unsigned int lock; +} raw_spinlock_t; + +#define __RAW_SPIN_LOCK_UNLOCKED { 0 } + +typedef struct { + volatile unsigned int lock; +} raw_rwlock_t; + +#define __RAW_RW_LOCK_UNLOCKED { 0 } + +#endif diff --git a/include/asm-arm/spinlock.h b/include/asm-arm/spinlock.h index 1f906d09b688..cb4906b45555 100644 --- a/include/asm-arm/spinlock.h +++ b/include/asm-arm/spinlock.h @@ -16,21 +16,14 @@ * Unlocked value: 0 * Locked value: 1 */ -typedef struct { - volatile unsigned int lock; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} spinlock_t; -#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0 } +#define __raw_spin_is_locked(x) ((x)->lock != 0) +#define __raw_spin_unlock_wait(lock) \ + do { while (__raw_spin_is_locked(lock)) cpu_relax(); } while (0) -#define spin_lock_init(x) do { *(x) = SPIN_LOCK_UNLOCKED; } while (0) -#define spin_is_locked(x) ((x)->lock != 0) -#define spin_unlock_wait(x) do { barrier(); } while (spin_is_locked(x)) -#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock) +#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock) -static inline void _raw_spin_lock(spinlock_t *lock) +static inline void __raw_spin_lock(raw_spinlock_t *lock) { unsigned long tmp; @@ -47,7 +40,7 @@ static inline void _raw_spin_lock(spinlock_t *lock) smp_mb(); } -static inline int _raw_spin_trylock(spinlock_t *lock) +static inline int __raw_spin_trylock(raw_spinlock_t *lock) { unsigned long tmp; @@ -67,7 +60,7 @@ static inline int _raw_spin_trylock(spinlock_t *lock) } } -static inline void _raw_spin_unlock(spinlock_t *lock) +static inline void __raw_spin_unlock(raw_spinlock_t *lock) { smp_mb(); @@ -80,23 +73,14 @@ static inline void _raw_spin_unlock(spinlock_t *lock) /* * RWLOCKS - */ -typedef struct { - volatile unsigned int lock; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} rwlock_t; - -#define RW_LOCK_UNLOCKED (rwlock_t) { 0 } -#define rwlock_init(x) do { *(x) = RW_LOCK_UNLOCKED; } while (0) -#define rwlock_is_locked(x) (*((volatile unsigned int *)(x)) != 0) - -/* + * + * * Write locks are easy - we just set bit 31. When unlocking, we can * just write zero since the lock is exclusively held. */ -static inline void _raw_write_lock(rwlock_t *rw) +#define rwlock_is_locked(x) (*((volatile unsigned int *)(x)) != 0) + +static inline void __raw_write_lock(rwlock_t *rw) { unsigned long tmp; @@ -113,7 +97,7 @@ static inline void _raw_write_lock(rwlock_t *rw) smp_mb(); } -static inline int _raw_write_trylock(rwlock_t *rw) +static inline int __raw_write_trylock(rwlock_t *rw) { unsigned long tmp; @@ -133,7 +117,7 @@ static inline int _raw_write_trylock(rwlock_t *rw) } } -static inline void _raw_write_unlock(rwlock_t *rw) +static inline void __raw_write_unlock(raw_rwlock_t *rw) { smp_mb(); @@ -156,7 +140,7 @@ static inline void _raw_write_unlock(rwlock_t *rw) * currently active. However, we know we won't have any write * locks. */ -static inline void _raw_read_lock(rwlock_t *rw) +static inline void __raw_read_lock(raw_rwlock_t *rw) { unsigned long tmp, tmp2; @@ -173,7 +157,7 @@ static inline void _raw_read_lock(rwlock_t *rw) smp_mb(); } -static inline void _raw_read_unlock(rwlock_t *rw) +static inline void __raw_read_unlock(rwlock_t *rw) { unsigned long tmp, tmp2; @@ -190,6 +174,6 @@ static inline void _raw_read_unlock(rwlock_t *rw) : "cc"); } -#define _raw_read_trylock(lock) generic_raw_read_trylock(lock) +#define __raw_read_trylock(lock) generic__raw_read_trylock(lock) #endif /* __ASM_SPINLOCK_H */ diff --git a/include/asm-arm/spinlock_types.h b/include/asm-arm/spinlock_types.h new file mode 100644 index 000000000000..43e83f6d2ee5 --- /dev/null +++ b/include/asm-arm/spinlock_types.h @@ -0,0 +1,20 @@ +#ifndef __ASM_SPINLOCK_TYPES_H +#define __ASM_SPINLOCK_TYPES_H + +#ifndef __LINUX_SPINLOCK_TYPES_H +# error "please don't include this file directly" +#endif + +typedef struct { + volatile unsigned int lock; +} raw_spinlock_t; + +#define __RAW_SPIN_LOCK_UNLOCKED { 0 } + +typedef struct { + volatile unsigned int lock; +} raw_rwlock_t; + +#define __RAW_RW_LOCK_UNLOCKED { 0 } + +#endif diff --git a/include/asm-i386/spinlock.h b/include/asm-i386/spinlock.h index f9ff31f40036..23604350cdf4 100644 --- a/include/asm-i386/spinlock.h +++ b/include/asm-i386/spinlock.h @@ -7,46 +7,21 @@ #include #include -asmlinkage int printk(const char * fmt, ...) - __attribute__ ((format (printf, 1, 2))); - /* * Your basic SMP spinlocks, allowing only a single CPU anywhere - */ - -typedef struct { - volatile unsigned int slock; -#ifdef CONFIG_DEBUG_SPINLOCK - unsigned magic; -#endif -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} spinlock_t; - -#define SPINLOCK_MAGIC 0xdead4ead - -#ifdef CONFIG_DEBUG_SPINLOCK -#define SPINLOCK_MAGIC_INIT , SPINLOCK_MAGIC -#else -#define SPINLOCK_MAGIC_INIT /* */ -#endif - -#define SPIN_LOCK_UNLOCKED (spinlock_t) { 1 SPINLOCK_MAGIC_INIT } - -#define spin_lock_init(x) do { *(x) = SPIN_LOCK_UNLOCKED; } while(0) - -/* + * * Simple spin lock operations. There are two variants, one clears IRQ's * on the local processor, one does not. * * We make no fairness assumptions. They have a cost. + * + * (the type definitions are in asm/spinlock_types.h) */ -#define spin_is_locked(x) (*(volatile signed char *)(&(x)->slock) <= 0) -#define spin_unlock_wait(x) do { barrier(); } while(spin_is_locked(x)) +#define __raw_spin_is_locked(x) \ + (*(volatile signed char *)(&(x)->slock) <= 0) -#define spin_lock_string \ +#define __raw_spin_lock_string \ "\n1:\t" \ "lock ; decb %0\n\t" \ "jns 3f\n" \ @@ -57,7 +32,7 @@ typedef struct { "jmp 1b\n" \ "3:\n\t" -#define spin_lock_string_flags \ +#define __raw_spin_lock_string_flags \ "\n1:\t" \ "lock ; decb %0\n\t" \ "jns 4f\n\t" \ @@ -73,86 +48,71 @@ typedef struct { "jmp 1b\n" \ "4:\n\t" +static inline void __raw_spin_lock(raw_spinlock_t *lock) +{ + __asm__ __volatile__( + __raw_spin_lock_string + :"=m" (lock->slock) : : "memory"); +} + +static inline void __raw_spin_lock_flags(raw_spinlock_t *lock, unsigned long flags) +{ + __asm__ __volatile__( + __raw_spin_lock_string_flags + :"=m" (lock->slock) : "r" (flags) : "memory"); +} + +static inline int __raw_spin_trylock(raw_spinlock_t *lock) +{ + char oldval; + __asm__ __volatile__( + "xchgb %b0,%1" + :"=q" (oldval), "=m" (lock->slock) + :"0" (0) : "memory"); + return oldval > 0; +} + /* - * This works. Despite all the confusion. - * (except on PPro SMP or if we are using OOSTORE) + * __raw_spin_unlock based on writing $1 to the low byte. + * This method works. Despite all the confusion. + * (except on PPro SMP or if we are using OOSTORE, so we use xchgb there) * (PPro errata 66, 92) */ #if !defined(CONFIG_X86_OOSTORE) && !defined(CONFIG_X86_PPRO_FENCE) -#define spin_unlock_string \ +#define __raw_spin_unlock_string \ "movb $1,%0" \ :"=m" (lock->slock) : : "memory" -static inline void _raw_spin_unlock(spinlock_t *lock) +static inline void __raw_spin_unlock(raw_spinlock_t *lock) { -#ifdef CONFIG_DEBUG_SPINLOCK - BUG_ON(lock->magic != SPINLOCK_MAGIC); - BUG_ON(!spin_is_locked(lock)); -#endif __asm__ __volatile__( - spin_unlock_string + __raw_spin_unlock_string ); } #else -#define spin_unlock_string \ +#define __raw_spin_unlock_string \ "xchgb %b0, %1" \ :"=q" (oldval), "=m" (lock->slock) \ :"0" (oldval) : "memory" -static inline void _raw_spin_unlock(spinlock_t *lock) +static inline void __raw_spin_unlock(raw_spinlock_t *lock) { char oldval = 1; -#ifdef CONFIG_DEBUG_SPINLOCK - BUG_ON(lock->magic != SPINLOCK_MAGIC); - BUG_ON(!spin_is_locked(lock)); -#endif - __asm__ __volatile__( - spin_unlock_string - ); -} -#endif - -static inline int _raw_spin_trylock(spinlock_t *lock) -{ - char oldval; __asm__ __volatile__( - "xchgb %b0,%1" - :"=q" (oldval), "=m" (lock->slock) - :"0" (0) : "memory"); - return oldval > 0; + __raw_spin_unlock_string + ); } -static inline void _raw_spin_lock(spinlock_t *lock) -{ -#ifdef CONFIG_DEBUG_SPINLOCK - if (unlikely(lock->magic != SPINLOCK_MAGIC)) { - printk("eip: %p\n", __builtin_return_address(0)); - BUG(); - } #endif - __asm__ __volatile__( - spin_lock_string - :"=m" (lock->slock) : : "memory"); -} -static inline void _raw_spin_lock_flags (spinlock_t *lock, unsigned long flags) -{ -#ifdef CONFIG_DEBUG_SPINLOCK - if (unlikely(lock->magic != SPINLOCK_MAGIC)) { - printk("eip: %p\n", __builtin_return_address(0)); - BUG(); - } -#endif - __asm__ __volatile__( - spin_lock_string_flags - :"=m" (lock->slock) : "r" (flags) : "memory"); -} +#define __raw_spin_unlock_wait(lock) \ + do { while (__raw_spin_is_locked(lock)) cpu_relax(); } while (0) /* * Read-write spinlocks, allowing multiple readers @@ -163,72 +123,41 @@ static inline void _raw_spin_lock_flags (spinlock_t *lock, unsigned long flags) * can "mix" irq-safe locks - any writer needs to get a * irq-safe write-lock, but readers can get non-irqsafe * read-locks. + * + * On x86, we implement read-write locks as a 32-bit counter + * with the high bit (sign) being the "contended" bit. + * + * The inline assembly is non-obvious. Think about it. + * + * Changed to use the same technique as rw semaphores. See + * semaphore.h for details. -ben + * + * the helpers are in arch/i386/kernel/semaphore.c */ -typedef struct { - volatile unsigned int lock; -#ifdef CONFIG_DEBUG_SPINLOCK - unsigned magic; -#endif -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} rwlock_t; - -#define RWLOCK_MAGIC 0xdeaf1eed - -#ifdef CONFIG_DEBUG_SPINLOCK -#define RWLOCK_MAGIC_INIT , RWLOCK_MAGIC -#else -#define RWLOCK_MAGIC_INIT /* */ -#endif - -#define RW_LOCK_UNLOCKED (rwlock_t) { RW_LOCK_BIAS RWLOCK_MAGIC_INIT } - -#define rwlock_init(x) do { *(x) = RW_LOCK_UNLOCKED; } while(0) /** * read_can_lock - would read_trylock() succeed? * @lock: the rwlock in question. */ -#define read_can_lock(x) ((int)(x)->lock > 0) +#define __raw_read_can_lock(x) ((int)(x)->lock > 0) /** * write_can_lock - would write_trylock() succeed? * @lock: the rwlock in question. */ -#define write_can_lock(x) ((x)->lock == RW_LOCK_BIAS) +#define __raw_write_can_lock(x) ((x)->lock == RW_LOCK_BIAS) -/* - * On x86, we implement read-write locks as a 32-bit counter - * with the high bit (sign) being the "contended" bit. - * - * The inline assembly is non-obvious. Think about it. - * - * Changed to use the same technique as rw semaphores. See - * semaphore.h for details. -ben - */ -/* the spinlock helpers are in arch/i386/kernel/semaphore.c */ - -static inline void _raw_read_lock(rwlock_t *rw) +static inline void __raw_read_lock(raw_rwlock_t *rw) { -#ifdef CONFIG_DEBUG_SPINLOCK - BUG_ON(rw->magic != RWLOCK_MAGIC); -#endif __build_read_lock(rw, "__read_lock_failed"); } -static inline void _raw_write_lock(rwlock_t *rw) +static inline void __raw_write_lock(raw_rwlock_t *rw) { -#ifdef CONFIG_DEBUG_SPINLOCK - BUG_ON(rw->magic != RWLOCK_MAGIC); -#endif __build_write_lock(rw, "__write_lock_failed"); } -#define _raw_read_unlock(rw) asm volatile("lock ; incl %0" :"=m" ((rw)->lock) : : "memory") -#define _raw_write_unlock(rw) asm volatile("lock ; addl $" RW_LOCK_BIAS_STR ",%0":"=m" ((rw)->lock) : : "memory") - -static inline int _raw_read_trylock(rwlock_t *lock) +static inline int __raw_read_trylock(raw_rwlock_t *lock) { atomic_t *count = (atomic_t *)lock; atomic_dec(count); @@ -238,7 +167,7 @@ static inline int _raw_read_trylock(rwlock_t *lock) return 0; } -static inline int _raw_write_trylock(rwlock_t *lock) +static inline int __raw_write_trylock(raw_rwlock_t *lock) { atomic_t *count = (atomic_t *)lock; if (atomic_sub_and_test(RW_LOCK_BIAS, count)) @@ -247,4 +176,15 @@ static inline int _raw_write_trylock(rwlock_t *lock) return 0; } +static inline void __raw_read_unlock(raw_rwlock_t *rw) +{ + asm volatile("lock ; incl %0" :"=m" (rw->lock) : : "memory"); +} + +static inline void __raw_write_unlock(raw_rwlock_t *rw) +{ + asm volatile("lock ; addl $" RW_LOCK_BIAS_STR ", %0" + : "=m" (rw->lock) : : "memory"); +} + #endif /* __ASM_SPINLOCK_H */ diff --git a/include/asm-i386/spinlock_types.h b/include/asm-i386/spinlock_types.h new file mode 100644 index 000000000000..59efe849f351 --- /dev/null +++ b/include/asm-i386/spinlock_types.h @@ -0,0 +1,20 @@ +#ifndef __ASM_SPINLOCK_TYPES_H +#define __ASM_SPINLOCK_TYPES_H + +#ifndef __LINUX_SPINLOCK_TYPES_H +# error "please don't include this file directly" +#endif + +typedef struct { + volatile unsigned int slock; +} raw_spinlock_t; + +#define __RAW_SPIN_LOCK_UNLOCKED { 1 } + +typedef struct { + volatile unsigned int lock; +} raw_rwlock_t; + +#define __RAW_RW_LOCK_UNLOCKED { RW_LOCK_BIAS } + +#endif diff --git a/include/asm-ia64/spinlock.h b/include/asm-ia64/spinlock.h index d2430aa0d49d..5b78611411c3 100644 --- a/include/asm-ia64/spinlock.h +++ b/include/asm-ia64/spinlock.h @@ -17,28 +17,20 @@ #include #include -typedef struct { - volatile unsigned int lock; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} spinlock_t; - -#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0 } -#define spin_lock_init(x) ((x)->lock = 0) +#define __raw_spin_lock_init(x) ((x)->lock = 0) #ifdef ASM_SUPPORTED /* * Try to get the lock. If we fail to get the lock, make a non-standard call to * ia64_spinlock_contention(). We do not use a normal call because that would force all - * callers of spin_lock() to be non-leaf routines. Instead, ia64_spinlock_contention() is - * carefully coded to touch only those registers that spin_lock() marks "clobbered". + * callers of __raw_spin_lock() to be non-leaf routines. Instead, ia64_spinlock_contention() is + * carefully coded to touch only those registers that __raw_spin_lock() marks "clobbered". */ #define IA64_SPINLOCK_CLOBBERS "ar.ccv", "ar.pfs", "p14", "p15", "r27", "r28", "r29", "r30", "b6", "memory" static inline void -_raw_spin_lock_flags (spinlock_t *lock, unsigned long flags) +__raw_spin_lock_flags (raw_spinlock_t *lock, unsigned long flags) { register volatile unsigned int *ptr asm ("r31") = &lock->lock; @@ -94,17 +86,17 @@ _raw_spin_lock_flags (spinlock_t *lock, unsigned long flags) #endif } -#define _raw_spin_lock(lock) _raw_spin_lock_flags(lock, 0) +#define __raw_spin_lock(lock) __raw_spin_lock_flags(lock, 0) /* Unlock by doing an ordered store and releasing the cacheline with nta */ -static inline void _raw_spin_unlock(spinlock_t *x) { +static inline void __raw_spin_unlock(raw_spinlock_t *x) { barrier(); asm volatile ("st4.rel.nta [%0] = r0\n\t" :: "r"(x)); } #else /* !ASM_SUPPORTED */ -#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock) -# define _raw_spin_lock(x) \ +#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock) +# define __raw_spin_lock(x) \ do { \ __u32 *ia64_spinlock_ptr = (__u32 *) (x); \ __u64 ia64_spinlock_val; \ @@ -117,29 +109,20 @@ do { \ } while (ia64_spinlock_val); \ } \ } while (0) -#define _raw_spin_unlock(x) do { barrier(); ((spinlock_t *) x)->lock = 0; } while (0) +#define __raw_spin_unlock(x) do { barrier(); ((raw_spinlock_t *) x)->lock = 0; } while (0) #endif /* !ASM_SUPPORTED */ -#define spin_is_locked(x) ((x)->lock != 0) -#define _raw_spin_trylock(x) (cmpxchg_acq(&(x)->lock, 0, 1) == 0) -#define spin_unlock_wait(x) do { barrier(); } while ((x)->lock) - -typedef struct { - volatile unsigned int read_counter : 24; - volatile unsigned int write_lock : 8; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} rwlock_t; -#define RW_LOCK_UNLOCKED (rwlock_t) { 0, 0 } +#define __raw_spin_is_locked(x) ((x)->lock != 0) +#define __raw_spin_trylock(x) (cmpxchg_acq(&(x)->lock, 0, 1) == 0) +#define __raw_spin_unlock_wait(lock) \ + do { while (__raw_spin_is_locked(lock)) cpu_relax(); } while (0) -#define rwlock_init(x) do { *(x) = RW_LOCK_UNLOCKED; } while(0) -#define read_can_lock(rw) (*(volatile int *)(rw) >= 0) -#define write_can_lock(rw) (*(volatile int *)(rw) == 0) +#define __raw_read_can_lock(rw) (*(volatile int *)(rw) >= 0) +#define __raw_write_can_lock(rw) (*(volatile int *)(rw) == 0) -#define _raw_read_lock(rw) \ +#define __raw_read_lock(rw) \ do { \ - rwlock_t *__read_lock_ptr = (rw); \ + raw_rwlock_t *__read_lock_ptr = (rw); \ \ while (unlikely(ia64_fetchadd(1, (int *) __read_lock_ptr, acq) < 0)) { \ ia64_fetchadd(-1, (int *) __read_lock_ptr, rel); \ @@ -148,14 +131,14 @@ do { \ } \ } while (0) -#define _raw_read_unlock(rw) \ +#define __raw_read_unlock(rw) \ do { \ - rwlock_t *__read_lock_ptr = (rw); \ + raw_rwlock_t *__read_lock_ptr = (rw); \ ia64_fetchadd(-1, (int *) __read_lock_ptr, rel); \ } while (0) #ifdef ASM_SUPPORTED -#define _raw_write_lock(rw) \ +#define __raw_write_lock(rw) \ do { \ __asm__ __volatile__ ( \ "mov ar.ccv = r0\n" \ @@ -170,7 +153,7 @@ do { \ :: "r"(rw) : "ar.ccv", "p7", "r2", "r29", "memory"); \ } while(0) -#define _raw_write_trylock(rw) \ +#define __raw_write_trylock(rw) \ ({ \ register long result; \ \ @@ -182,7 +165,7 @@ do { \ (result == 0); \ }) -static inline void _raw_write_unlock(rwlock_t *x) +static inline void __raw_write_unlock(raw_rwlock_t *x) { u8 *y = (u8 *)x; barrier(); @@ -191,7 +174,7 @@ static inline void _raw_write_unlock(rwlock_t *x) #else /* !ASM_SUPPORTED */ -#define _raw_write_lock(l) \ +#define __raw_write_lock(l) \ ({ \ __u64 ia64_val, ia64_set_val = ia64_dep_mi(-1, 0, 31, 1); \ __u32 *ia64_write_lock_ptr = (__u32 *) (l); \ @@ -202,7 +185,7 @@ static inline void _raw_write_unlock(rwlock_t *x) } while (ia64_val); \ }) -#define _raw_write_trylock(rw) \ +#define __raw_write_trylock(rw) \ ({ \ __u64 ia64_val; \ __u64 ia64_set_val = ia64_dep_mi(-1, 0, 31,1); \ @@ -210,7 +193,7 @@ static inline void _raw_write_unlock(rwlock_t *x) (ia64_val == 0); \ }) -static inline void _raw_write_unlock(rwlock_t *x) +static inline void __raw_write_unlock(raw_rwlock_t *x) { barrier(); x->write_lock = 0; @@ -218,6 +201,6 @@ static inline void _raw_write_unlock(rwlock_t *x) #endif /* !ASM_SUPPORTED */ -#define _raw_read_trylock(lock) generic_raw_read_trylock(lock) +#define __raw_read_trylock(lock) generic__raw_read_trylock(lock) #endif /* _ASM_IA64_SPINLOCK_H */ diff --git a/include/asm-ia64/spinlock_types.h b/include/asm-ia64/spinlock_types.h new file mode 100644 index 000000000000..474e46f1ab4a --- /dev/null +++ b/include/asm-ia64/spinlock_types.h @@ -0,0 +1,21 @@ +#ifndef _ASM_IA64_SPINLOCK_TYPES_H +#define _ASM_IA64_SPINLOCK_TYPES_H + +#ifndef __LINUX_SPINLOCK_TYPES_H +# error "please don't include this file directly" +#endif + +typedef struct { + volatile unsigned int lock; +} raw_spinlock_t; + +#define __RAW_SPIN_LOCK_UNLOCKED { 0 } + +typedef struct { + volatile unsigned int read_counter : 31; + volatile unsigned int write_lock : 1; +} raw_rwlock_t; + +#define __RAW_RW_LOCK_UNLOCKED { 0, 0 } + +#endif diff --git a/include/asm-m32r/spinlock.h b/include/asm-m32r/spinlock.h index 6608d8371c50..7de7def28da9 100644 --- a/include/asm-m32r/spinlock.h +++ b/include/asm-m32r/spinlock.h @@ -14,57 +14,30 @@ #include #include -extern int printk(const char * fmt, ...) - __attribute__ ((format (printf, 1, 2))); - -#define RW_LOCK_BIAS 0x01000000 -#define RW_LOCK_BIAS_STR "0x01000000" - /* * Your basic SMP spinlocks, allowing only a single CPU anywhere - */ - -typedef struct { - volatile int slock; -#ifdef CONFIG_DEBUG_SPINLOCK - unsigned magic; -#endif -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} spinlock_t; - -#define SPINLOCK_MAGIC 0xdead4ead - -#ifdef CONFIG_DEBUG_SPINLOCK -#define SPINLOCK_MAGIC_INIT , SPINLOCK_MAGIC -#else -#define SPINLOCK_MAGIC_INIT /* */ -#endif - -#define SPIN_LOCK_UNLOCKED (spinlock_t) { 1 SPINLOCK_MAGIC_INIT } - -#define spin_lock_init(x) do { *(x) = SPIN_LOCK_UNLOCKED; } while(0) - -/* + * + * (the type definitions are in asm/spinlock_types.h) + * * Simple spin lock operations. There are two variants, one clears IRQ's * on the local processor, one does not. * * We make no fairness assumptions. They have a cost. */ -#define spin_is_locked(x) (*(volatile int *)(&(x)->slock) <= 0) -#define spin_unlock_wait(x) do { barrier(); } while(spin_is_locked(x)) -#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock) +#define __raw_spin_is_locked(x) (*(volatile int *)(&(x)->slock) <= 0) +#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock) +#define __raw_spin_unlock_wait(x) \ + do { cpu_relax(); } while (__raw_spin_is_locked(x)) /** - * _raw_spin_trylock - Try spin lock and return a result + * __raw_spin_trylock - Try spin lock and return a result * @lock: Pointer to the lock variable * - * _raw_spin_trylock() tries to get the lock and returns a result. + * __raw_spin_trylock() tries to get the lock and returns a result. * On the m32r, the result value is 1 (= Success) or 0 (= Failure). */ -static inline int _raw_spin_trylock(spinlock_t *lock) +static inline int __raw_spin_trylock(raw_spinlock_t *lock) { int oldval; unsigned long tmp1, tmp2; @@ -78,7 +51,7 @@ static inline int _raw_spin_trylock(spinlock_t *lock) * } */ __asm__ __volatile__ ( - "# spin_trylock \n\t" + "# __raw_spin_trylock \n\t" "ldi %1, #0; \n\t" "mvfc %2, psw; \n\t" "clrpsw #0x40 -> nop; \n\t" @@ -97,16 +70,10 @@ static inline int _raw_spin_trylock(spinlock_t *lock) return (oldval > 0); } -static inline void _raw_spin_lock(spinlock_t *lock) +static inline void __raw_spin_lock(raw_spinlock_t *lock) { unsigned long tmp0, tmp1; -#ifdef CONFIG_DEBUG_SPINLOCK - if (unlikely(lock->magic != SPINLOCK_MAGIC)) { - printk("pc: %p\n", __builtin_return_address(0)); - BUG(); - } -#endif /* * lock->slock : =1 : unlock * : <=0 : lock @@ -118,7 +85,7 @@ static inline void _raw_spin_lock(spinlock_t *lock) * } */ __asm__ __volatile__ ( - "# spin_lock \n\t" + "# __raw_spin_lock \n\t" ".fillinsn \n" "1: \n\t" "mvfc %1, psw; \n\t" @@ -145,12 +112,8 @@ static inline void _raw_spin_lock(spinlock_t *lock) ); } -static inline void _raw_spin_unlock(spinlock_t *lock) +static inline void __raw_spin_unlock(raw_spinlock_t *lock) { -#ifdef CONFIG_DEBUG_SPINLOCK - BUG_ON(lock->magic != SPINLOCK_MAGIC); - BUG_ON(!spin_is_locked(lock)); -#endif mb(); lock->slock = 1; } @@ -164,59 +127,32 @@ static inline void _raw_spin_unlock(spinlock_t *lock) * can "mix" irq-safe locks - any writer needs to get a * irq-safe write-lock, but readers can get non-irqsafe * read-locks. + * + * On x86, we implement read-write locks as a 32-bit counter + * with the high bit (sign) being the "contended" bit. + * + * The inline assembly is non-obvious. Think about it. + * + * Changed to use the same technique as rw semaphores. See + * semaphore.h for details. -ben */ -typedef struct { - volatile int lock; -#ifdef CONFIG_DEBUG_SPINLOCK - unsigned magic; -#endif -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} rwlock_t; - -#define RWLOCK_MAGIC 0xdeaf1eed - -#ifdef CONFIG_DEBUG_SPINLOCK -#define RWLOCK_MAGIC_INIT , RWLOCK_MAGIC -#else -#define RWLOCK_MAGIC_INIT /* */ -#endif - -#define RW_LOCK_UNLOCKED (rwlock_t) { RW_LOCK_BIAS RWLOCK_MAGIC_INIT } - -#define rwlock_init(x) do { *(x) = RW_LOCK_UNLOCKED; } while(0) /** * read_can_lock - would read_trylock() succeed? * @lock: the rwlock in question. */ -#define read_can_lock(x) ((int)(x)->lock > 0) +#define __raw_read_can_lock(x) ((int)(x)->lock > 0) /** * write_can_lock - would write_trylock() succeed? * @lock: the rwlock in question. */ -#define write_can_lock(x) ((x)->lock == RW_LOCK_BIAS) - -/* - * On x86, we implement read-write locks as a 32-bit counter - * with the high bit (sign) being the "contended" bit. - * - * The inline assembly is non-obvious. Think about it. - * - * Changed to use the same technique as rw semaphores. See - * semaphore.h for details. -ben - */ -/* the spinlock helpers are in arch/i386/kernel/semaphore.c */ +#define __raw_write_can_lock(x) ((x)->lock == RW_LOCK_BIAS) -static inline void _raw_read_lock(rwlock_t *rw) +static inline void __raw_read_lock(raw_rwlock_t *rw) { unsigned long tmp0, tmp1; -#ifdef CONFIG_DEBUG_SPINLOCK - BUG_ON(rw->magic != RWLOCK_MAGIC); -#endif /* * rw->lock : >0 : unlock * : <=0 : lock @@ -264,13 +200,10 @@ static inline void _raw_read_lock(rwlock_t *rw) ); } -static inline void _raw_write_lock(rwlock_t *rw) +static inline void __raw_write_lock(raw_rwlock_t *rw) { unsigned long tmp0, tmp1, tmp2; -#ifdef CONFIG_DEBUG_SPINLOCK - BUG_ON(rw->magic != RWLOCK_MAGIC); -#endif /* * rw->lock : =RW_LOCK_BIAS_STR : unlock * : !=RW_LOCK_BIAS_STR : lock @@ -320,7 +253,7 @@ static inline void _raw_write_lock(rwlock_t *rw) ); } -static inline void _raw_read_unlock(rwlock_t *rw) +static inline void __raw_read_unlock(raw_rwlock_t *rw) { unsigned long tmp0, tmp1; @@ -342,7 +275,7 @@ static inline void _raw_read_unlock(rwlock_t *rw) ); } -static inline void _raw_write_unlock(rwlock_t *rw) +static inline void __raw_write_unlock(raw_rwlock_t *rw) { unsigned long tmp0, tmp1, tmp2; @@ -366,9 +299,9 @@ static inline void _raw_write_unlock(rwlock_t *rw) ); } -#define _raw_read_trylock(lock) generic_raw_read_trylock(lock) +#define __raw_read_trylock(lock) generic__raw_read_trylock(lock) -static inline int _raw_write_trylock(rwlock_t *lock) +static inline int __raw_write_trylock(raw_rwlock_t *lock) { atomic_t *count = (atomic_t *)lock; if (atomic_sub_and_test(RW_LOCK_BIAS, count)) diff --git a/include/asm-m32r/spinlock_types.h b/include/asm-m32r/spinlock_types.h new file mode 100644 index 000000000000..7e9941c45f40 --- /dev/null +++ b/include/asm-m32r/spinlock_types.h @@ -0,0 +1,23 @@ +#ifndef _ASM_M32R_SPINLOCK_TYPES_H +#define _ASM_M32R_SPINLOCK_TYPES_H + +#ifndef __LINUX_SPINLOCK_TYPES_H +# error "please don't include this file directly" +#endif + +typedef struct { + volatile int slock; +} raw_spinlock_t; + +#define __RAW_SPIN_LOCK_UNLOCKED { 1 } + +typedef struct { + volatile int lock; +} raw_rwlock_t; + +#define RW_LOCK_BIAS 0x01000000 +#define RW_LOCK_BIAS_STR "0x01000000" + +#define __RAW_RW_LOCK_UNLOCKED { RW_LOCK_BIAS } + +#endif diff --git a/include/asm-mips/spinlock.h b/include/asm-mips/spinlock.h index 114d3eb98a6a..4d0135b11156 100644 --- a/include/asm-mips/spinlock.h +++ b/include/asm-mips/spinlock.h @@ -16,20 +16,10 @@ * Your basic SMP spinlocks, allowing only a single CPU anywhere */ -typedef struct { - volatile unsigned int lock; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} spinlock_t; - -#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0 } - -#define spin_lock_init(x) do { (x)->lock = 0; } while(0) - -#define spin_is_locked(x) ((x)->lock != 0) -#define spin_unlock_wait(x) do { barrier(); } while ((x)->lock) -#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock) +#define __raw_spin_is_locked(x) ((x)->lock != 0) +#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock) +#define __raw_spin_unlock_wait(x) \ + do { cpu_relax(); } while ((x)->lock) /* * Simple spin lock operations. There are two variants, one clears IRQ's @@ -38,13 +28,13 @@ typedef struct { * We make no fairness assumptions. They have a cost. */ -static inline void _raw_spin_lock(spinlock_t *lock) +static inline void __raw_spin_lock(raw_spinlock_t *lock) { unsigned int tmp; if (R10000_LLSC_WAR) { __asm__ __volatile__( - " .set noreorder # _raw_spin_lock \n" + " .set noreorder # __raw_spin_lock \n" "1: ll %1, %2 \n" " bnez %1, 1b \n" " li %1, 1 \n" @@ -58,7 +48,7 @@ static inline void _raw_spin_lock(spinlock_t *lock) : "memory"); } else { __asm__ __volatile__( - " .set noreorder # _raw_spin_lock \n" + " .set noreorder # __raw_spin_lock \n" "1: ll %1, %2 \n" " bnez %1, 1b \n" " li %1, 1 \n" @@ -72,10 +62,10 @@ static inline void _raw_spin_lock(spinlock_t *lock) } } -static inline void _raw_spin_unlock(spinlock_t *lock) +static inline void __raw_spin_unlock(raw_spinlock_t *lock) { __asm__ __volatile__( - " .set noreorder # _raw_spin_unlock \n" + " .set noreorder # __raw_spin_unlock \n" " sync \n" " sw $0, %0 \n" " .set\treorder \n" @@ -84,13 +74,13 @@ static inline void _raw_spin_unlock(spinlock_t *lock) : "memory"); } -static inline unsigned int _raw_spin_trylock(spinlock_t *lock) +static inline unsigned int __raw_spin_trylock(raw_spinlock_t *lock) { unsigned int temp, res; if (R10000_LLSC_WAR) { __asm__ __volatile__( - " .set noreorder # _raw_spin_trylock \n" + " .set noreorder # __raw_spin_trylock \n" "1: ll %0, %3 \n" " ori %2, %0, 1 \n" " sc %2, %1 \n" @@ -104,7 +94,7 @@ static inline unsigned int _raw_spin_trylock(spinlock_t *lock) : "memory"); } else { __asm__ __volatile__( - " .set noreorder # _raw_spin_trylock \n" + " .set noreorder # __raw_spin_trylock \n" "1: ll %0, %3 \n" " ori %2, %0, 1 \n" " sc %2, %1 \n" @@ -129,24 +119,13 @@ static inline unsigned int _raw_spin_trylock(spinlock_t *lock) * read-locks. */ -typedef struct { - volatile unsigned int lock; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} rwlock_t; - -#define RW_LOCK_UNLOCKED (rwlock_t) { 0 } - -#define rwlock_init(x) do { *(x) = RW_LOCK_UNLOCKED; } while(0) - -static inline void _raw_read_lock(rwlock_t *rw) +static inline void __raw_read_lock(raw_rwlock_t *rw) { unsigned int tmp; if (R10000_LLSC_WAR) { __asm__ __volatile__( - " .set noreorder # _raw_read_lock \n" + " .set noreorder # __raw_read_lock \n" "1: ll %1, %2 \n" " bltz %1, 1b \n" " addu %1, 1 \n" @@ -160,7 +139,7 @@ static inline void _raw_read_lock(rwlock_t *rw) : "memory"); } else { __asm__ __volatile__( - " .set noreorder # _raw_read_lock \n" + " .set noreorder # __raw_read_lock \n" "1: ll %1, %2 \n" " bltz %1, 1b \n" " addu %1, 1 \n" @@ -177,13 +156,13 @@ static inline void _raw_read_lock(rwlock_t *rw) /* Note the use of sub, not subu which will make the kernel die with an overflow exception if we ever try to unlock an rwlock that is already unlocked or is being held by a writer. */ -static inline void _raw_read_unlock(rwlock_t *rw) +static inline void __raw_read_unlock(raw_rwlock_t *rw) { unsigned int tmp; if (R10000_LLSC_WAR) { __asm__ __volatile__( - "1: ll %1, %2 # _raw_read_unlock \n" + "1: ll %1, %2 # __raw_read_unlock \n" " sub %1, 1 \n" " sc %1, %0 \n" " beqzl %1, 1b \n" @@ -193,7 +172,7 @@ static inline void _raw_read_unlock(rwlock_t *rw) : "memory"); } else { __asm__ __volatile__( - " .set noreorder # _raw_read_unlock \n" + " .set noreorder # __raw_read_unlock \n" "1: ll %1, %2 \n" " sub %1, 1 \n" " sc %1, %0 \n" @@ -206,13 +185,13 @@ static inline void _raw_read_unlock(rwlock_t *rw) } } -static inline void _raw_write_lock(rwlock_t *rw) +static inline void __raw_write_lock(raw_rwlock_t *rw) { unsigned int tmp; if (R10000_LLSC_WAR) { __asm__ __volatile__( - " .set noreorder # _raw_write_lock \n" + " .set noreorder # __raw_write_lock \n" "1: ll %1, %2 \n" " bnez %1, 1b \n" " lui %1, 0x8000 \n" @@ -226,7 +205,7 @@ static inline void _raw_write_lock(rwlock_t *rw) : "memory"); } else { __asm__ __volatile__( - " .set noreorder # _raw_write_lock \n" + " .set noreorder # __raw_write_lock \n" "1: ll %1, %2 \n" " bnez %1, 1b \n" " lui %1, 0x8000 \n" @@ -241,26 +220,26 @@ static inline void _raw_write_lock(rwlock_t *rw) } } -static inline void _raw_write_unlock(rwlock_t *rw) +static inline void __raw_write_unlock(raw_rwlock_t *rw) { __asm__ __volatile__( - " sync # _raw_write_unlock \n" + " sync # __raw_write_unlock \n" " sw $0, %0 \n" : "=m" (rw->lock) : "m" (rw->lock) : "memory"); } -#define _raw_read_trylock(lock) generic_raw_read_trylock(lock) +#define __raw_read_trylock(lock) generic__raw_read_trylock(lock) -static inline int _raw_write_trylock(rwlock_t *rw) +static inline int __raw_write_trylock(raw_rwlock_t *rw) { unsigned int tmp; int ret; if (R10000_LLSC_WAR) { __asm__ __volatile__( - " .set noreorder # _raw_write_trylock \n" + " .set noreorder # __raw_write_trylock \n" " li %2, 0 \n" "1: ll %1, %3 \n" " bnez %1, 2f \n" @@ -277,7 +256,7 @@ static inline int _raw_write_trylock(rwlock_t *rw) : "memory"); } else { __asm__ __volatile__( - " .set noreorder # _raw_write_trylock \n" + " .set noreorder # __raw_write_trylock \n" " li %2, 0 \n" "1: ll %1, %3 \n" " bnez %1, 2f \n" diff --git a/include/asm-mips/spinlock_types.h b/include/asm-mips/spinlock_types.h new file mode 100644 index 000000000000..ce26c5048b15 --- /dev/null +++ b/include/asm-mips/spinlock_types.h @@ -0,0 +1,20 @@ +#ifndef _ASM_SPINLOCK_TYPES_H +#define _ASM_SPINLOCK_TYPES_H + +#ifndef __LINUX_SPINLOCK_TYPES_H +# error "please don't include this file directly" +#endif + +typedef struct { + volatile unsigned int lock; +} raw_spinlock_t; + +#define __RAW_SPIN_LOCK_UNLOCKED { 0 } + +typedef struct { + volatile unsigned int lock; +} raw_rwlock_t; + +#define __RAW_RW_LOCK_UNLOCKED { 0 } + +#endif diff --git a/include/asm-parisc/atomic.h b/include/asm-parisc/atomic.h index e24f7579adb0..048a2c7fd0c0 100644 --- a/include/asm-parisc/atomic.h +++ b/include/asm-parisc/atomic.h @@ -24,19 +24,19 @@ # define ATOMIC_HASH_SIZE 4 # define ATOMIC_HASH(a) (&(__atomic_hash[ (((unsigned long) a)/L1_CACHE_BYTES) & (ATOMIC_HASH_SIZE-1) ])) -extern spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] __lock_aligned; +extern raw_spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] __lock_aligned; -/* Can't use _raw_spin_lock_irq because of #include problems, so +/* Can't use raw_spin_lock_irq because of #include problems, so * this is the substitute */ #define _atomic_spin_lock_irqsave(l,f) do { \ - spinlock_t *s = ATOMIC_HASH(l); \ + raw_spinlock_t *s = ATOMIC_HASH(l); \ local_irq_save(f); \ - _raw_spin_lock(s); \ + __raw_spin_lock(s); \ } while(0) #define _atomic_spin_unlock_irqrestore(l,f) do { \ - spinlock_t *s = ATOMIC_HASH(l); \ - _raw_spin_unlock(s); \ + raw_spinlock_t *s = ATOMIC_HASH(l); \ + __raw_spin_unlock(s); \ local_irq_restore(f); \ } while(0) diff --git a/include/asm-parisc/bitops.h b/include/asm-parisc/bitops.h index 928e5ef850bd..af7db694b22d 100644 --- a/include/asm-parisc/bitops.h +++ b/include/asm-parisc/bitops.h @@ -2,7 +2,7 @@ #define _PARISC_BITOPS_H #include -#include +#include #include #include diff --git a/include/asm-parisc/cacheflush.h b/include/asm-parisc/cacheflush.h index 06732719d927..aa592d8c0e39 100644 --- a/include/asm-parisc/cacheflush.h +++ b/include/asm-parisc/cacheflush.h @@ -3,6 +3,7 @@ #include #include +#include /* for flush_user_dcache_range_asm() proto */ /* The usual comment is "Caches aren't brain-dead on the ". * Unfortunately, that doesn't apply to PA-RISC. */ diff --git a/include/asm-parisc/processor.h b/include/asm-parisc/processor.h index 0b61f51d8467..a9dfadd05658 100644 --- a/include/asm-parisc/processor.h +++ b/include/asm-parisc/processor.h @@ -11,6 +11,7 @@ #ifndef __ASSEMBLY__ #include #include +#include #include #include diff --git a/include/asm-parisc/spinlock.h b/include/asm-parisc/spinlock.h index 679ea1c651ef..43eaa6e742e0 100644 --- a/include/asm-parisc/spinlock.h +++ b/include/asm-parisc/spinlock.h @@ -2,30 +2,25 @@ #define __ASM_SPINLOCK_H #include +#include +#include /* Note that PA-RISC has to use `1' to mean unlocked and `0' to mean locked * since it only has load-and-zero. Moreover, at least on some PA processors, * the semaphore address has to be 16-byte aligned. */ -#ifndef CONFIG_DEBUG_SPINLOCK - -#define __SPIN_LOCK_UNLOCKED { { 1, 1, 1, 1 } } -#undef SPIN_LOCK_UNLOCKED -#define SPIN_LOCK_UNLOCKED (spinlock_t) __SPIN_LOCK_UNLOCKED - -#define spin_lock_init(x) do { *(x) = SPIN_LOCK_UNLOCKED; } while(0) - -static inline int spin_is_locked(spinlock_t *x) +static inline int __raw_spin_is_locked(raw_spinlock_t *x) { volatile unsigned int *a = __ldcw_align(x); return *a == 0; } -#define spin_unlock_wait(x) do { barrier(); } while(spin_is_locked(x)) -#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock) +#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock) +#define __raw_spin_unlock_wait(x) \ + do { cpu_relax(); } while (__raw_spin_is_locked(x)) -static inline void _raw_spin_lock(spinlock_t *x) +static inline void __raw_spin_lock(raw_spinlock_t *x) { volatile unsigned int *a; @@ -36,7 +31,7 @@ static inline void _raw_spin_lock(spinlock_t *x) mb(); } -static inline void _raw_spin_unlock(spinlock_t *x) +static inline void __raw_spin_unlock(raw_spinlock_t *x) { volatile unsigned int *a; mb(); @@ -45,7 +40,7 @@ static inline void _raw_spin_unlock(spinlock_t *x) mb(); } -static inline int _raw_spin_trylock(spinlock_t *x) +static inline int __raw_spin_trylock(raw_spinlock_t *x) { volatile unsigned int *a; int ret; @@ -57,131 +52,38 @@ static inline int _raw_spin_trylock(spinlock_t *x) return ret; } - -#define spin_lock_own(LOCK, LOCATION) ((void)0) - -#else /* !(CONFIG_DEBUG_SPINLOCK) */ - -#define SPINLOCK_MAGIC 0x1D244B3C - -#define __SPIN_LOCK_UNLOCKED { { 1, 1, 1, 1 }, SPINLOCK_MAGIC, 10, __FILE__ , NULL, 0, -1, NULL, NULL } -#undef SPIN_LOCK_UNLOCKED -#define SPIN_LOCK_UNLOCKED (spinlock_t) __SPIN_LOCK_UNLOCKED - -#define spin_lock_init(x) do { *(x) = SPIN_LOCK_UNLOCKED; } while(0) - -#define CHECK_LOCK(x) \ - do { \ - if (unlikely((x)->magic != SPINLOCK_MAGIC)) { \ - printk(KERN_ERR "%s:%d: spin_is_locked" \ - " on uninitialized spinlock %p.\n", \ - __FILE__, __LINE__, (x)); \ - } \ - } while(0) - -#define spin_is_locked(x) \ - ({ \ - CHECK_LOCK(x); \ - volatile unsigned int *a = __ldcw_align(x); \ - if (unlikely((*a == 0) && (x)->babble)) { \ - (x)->babble--; \ - printk("KERN_WARNING \ - %s:%d: spin_is_locked(%s/%p) already" \ - " locked by %s:%d in %s at %p(%d)\n", \ - __FILE__,__LINE__, (x)->module, (x), \ - (x)->bfile, (x)->bline, (x)->task->comm,\ - (x)->previous, (x)->oncpu); \ - } \ - *a == 0; \ - }) - -#define spin_unlock_wait(x) \ - do { \ - CHECK_LOCK(x); \ - volatile unsigned int *a = __ldcw_align(x); \ - if (unlikely((*a == 0) && (x)->babble)) { \ - (x)->babble--; \ - printk("KERN_WARNING \ - %s:%d: spin_unlock_wait(%s/%p)" \ - " owned by %s:%d in %s at %p(%d)\n", \ - __FILE__,__LINE__, (x)->module, (x), \ - (x)->bfile, (x)->bline, (x)->task->comm,\ - (x)->previous, (x)->oncpu); \ - } \ - barrier(); \ - } while (*((volatile unsigned char *)(__ldcw_align(x))) == 0) - -extern void _dbg_spin_lock(spinlock_t *lock, const char *base_file, int line_no); -extern void _dbg_spin_unlock(spinlock_t *lock, const char *, int); -extern int _dbg_spin_trylock(spinlock_t * lock, const char *, int); - -#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock) - -#define _raw_spin_unlock(lock) _dbg_spin_unlock(lock, __FILE__, __LINE__) -#define _raw_spin_lock(lock) _dbg_spin_lock(lock, __FILE__, __LINE__) -#define _raw_spin_trylock(lock) _dbg_spin_trylock(lock, __FILE__, __LINE__) - -/* just in case we need it */ -#define spin_lock_own(LOCK, LOCATION) \ -do { \ - volatile unsigned int *a = __ldcw_align(LOCK); \ - if (!((*a == 0) && ((LOCK)->oncpu == smp_processor_id()))) \ - printk("KERN_WARNING \ - %s: called on %d from %p but lock %s on %d\n", \ - LOCATION, smp_processor_id(), \ - __builtin_return_address(0), \ - (*a == 0) ? "taken" : "freed", (LOCK)->on_cpu); \ -} while (0) - -#endif /* !(CONFIG_DEBUG_SPINLOCK) */ /* * Read-write spinlocks, allowing multiple readers * but only one writer. */ -typedef struct { - spinlock_t lock; - volatile int counter; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} rwlock_t; - -#define RW_LOCK_UNLOCKED (rwlock_t) { __SPIN_LOCK_UNLOCKED, 0 } - -#define rwlock_init(lp) do { *(lp) = RW_LOCK_UNLOCKED; } while (0) -#define _raw_read_trylock(lock) generic_raw_read_trylock(lock) +#define __raw_read_trylock(lock) generic__raw_read_trylock(lock) /* read_lock, read_unlock are pretty straightforward. Of course it somehow * sucks we end up saving/restoring flags twice for read_lock_irqsave aso. */ -#ifdef CONFIG_DEBUG_RWLOCK -extern void _dbg_read_lock(rwlock_t * rw, const char *bfile, int bline); -#define _raw_read_lock(rw) _dbg_read_lock(rw, __FILE__, __LINE__) -#else -static __inline__ void _raw_read_lock(rwlock_t *rw) +static __inline__ void __raw_read_lock(raw_rwlock_t *rw) { unsigned long flags; local_irq_save(flags); - _raw_spin_lock(&rw->lock); + __raw_spin_lock(&rw->lock); rw->counter++; - _raw_spin_unlock(&rw->lock); + __raw_spin_unlock(&rw->lock); local_irq_restore(flags); } -#endif /* CONFIG_DEBUG_RWLOCK */ -static __inline__ void _raw_read_unlock(rwlock_t *rw) +static __inline__ void __raw_read_unlock(raw_rwlock_t *rw) { unsigned long flags; local_irq_save(flags); - _raw_spin_lock(&rw->lock); + __raw_spin_lock(&rw->lock); rw->counter--; - _raw_spin_unlock(&rw->lock); + __raw_spin_unlock(&rw->lock); local_irq_restore(flags); } @@ -194,20 +96,17 @@ static __inline__ void _raw_read_unlock(rwlock_t *rw) * writers) in interrupt handlers someone fucked up and we'd dead-lock * sooner or later anyway. prumpf */ -#ifdef CONFIG_DEBUG_RWLOCK -extern void _dbg_write_lock(rwlock_t * rw, const char *bfile, int bline); -#define _raw_write_lock(rw) _dbg_write_lock(rw, __FILE__, __LINE__) -#else -static __inline__ void _raw_write_lock(rwlock_t *rw) +static __inline__ void __raw_write_lock(raw_rwlock_t *rw) { retry: - _raw_spin_lock(&rw->lock); + __raw_spin_lock(&rw->lock); if(rw->counter != 0) { /* this basically never happens */ - _raw_spin_unlock(&rw->lock); + __raw_spin_unlock(&rw->lock); - while(rw->counter != 0); + while (rw->counter != 0) + cpu_relax(); goto retry; } @@ -215,26 +114,21 @@ retry: /* got it. now leave without unlocking */ rw->counter = -1; /* remember we are locked */ } -#endif /* CONFIG_DEBUG_RWLOCK */ /* write_unlock is absolutely trivial - we don't have to wait for anything */ -static __inline__ void _raw_write_unlock(rwlock_t *rw) +static __inline__ void __raw_write_unlock(raw_rwlock_t *rw) { rw->counter = 0; - _raw_spin_unlock(&rw->lock); + __raw_spin_unlock(&rw->lock); } -#ifdef CONFIG_DEBUG_RWLOCK -extern int _dbg_write_trylock(rwlock_t * rw, const char *bfile, int bline); -#define _raw_write_trylock(rw) _dbg_write_trylock(rw, __FILE__, __LINE__) -#else -static __inline__ int _raw_write_trylock(rwlock_t *rw) +static __inline__ int __raw_write_trylock(raw_rwlock_t *rw) { - _raw_spin_lock(&rw->lock); + __raw_spin_lock(&rw->lock); if (rw->counter != 0) { /* this basically never happens */ - _raw_spin_unlock(&rw->lock); + __raw_spin_unlock(&rw->lock); return 0; } @@ -243,14 +137,13 @@ static __inline__ int _raw_write_trylock(rwlock_t *rw) rw->counter = -1; /* remember we are locked */ return 1; } -#endif /* CONFIG_DEBUG_RWLOCK */ -static __inline__ int is_read_locked(rwlock_t *rw) +static __inline__ int __raw_is_read_locked(raw_rwlock_t *rw) { return rw->counter > 0; } -static __inline__ int is_write_locked(rwlock_t *rw) +static __inline__ int __raw_is_write_locked(raw_rwlock_t *rw) { return rw->counter < 0; } diff --git a/include/asm-parisc/spinlock_types.h b/include/asm-parisc/spinlock_types.h new file mode 100644 index 000000000000..785bba822fbf --- /dev/null +++ b/include/asm-parisc/spinlock_types.h @@ -0,0 +1,21 @@ +#ifndef __ASM_SPINLOCK_TYPES_H +#define __ASM_SPINLOCK_TYPES_H + +#ifndef __LINUX_SPINLOCK_TYPES_H +# error "please don't include this file directly" +#endif + +typedef struct { + volatile unsigned int lock[4]; +} raw_spinlock_t; + +#define __RAW_SPIN_LOCK_UNLOCKED { { 1, 1, 1, 1 } } + +typedef struct { + raw_spinlock_t lock; + volatile int counter; +} raw_rwlock_t; + +#define __RAW_RW_LOCK_UNLOCKED { __RAW_SPIN_LOCK_UNLOCKED, 0 } + +#endif diff --git a/include/asm-parisc/system.h b/include/asm-parisc/system.h index 81c543339036..26ff844a21c1 100644 --- a/include/asm-parisc/system.h +++ b/include/asm-parisc/system.h @@ -160,29 +160,7 @@ static inline void set_eiem(unsigned long val) }) #ifdef CONFIG_SMP -/* - * Your basic SMP spinlocks, allowing only a single CPU anywhere - */ - -typedef struct { - volatile unsigned int lock[4]; -#ifdef CONFIG_DEBUG_SPINLOCK - unsigned long magic; - volatile unsigned int babble; - const char *module; - char *bfile; - int bline; - int oncpu; - void *previous; - struct task_struct * task; -#endif -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} spinlock_t; - -#define __lock_aligned __attribute__((__section__(".data.lock_aligned"))) - +# define __lock_aligned __attribute__((__section__(".data.lock_aligned"))) #endif #define KERNEL_START (0x10100000 - 0x1000) diff --git a/include/asm-ppc/spinlock.h b/include/asm-ppc/spinlock.h index 909199aae104..20edcf2a6e0c 100644 --- a/include/asm-ppc/spinlock.h +++ b/include/asm-ppc/spinlock.h @@ -5,41 +5,21 @@ /* * Simple spin lock operations. + * + * (the type definitions are in asm/raw_spinlock_types.h) */ -typedef struct { - volatile unsigned long lock; -#ifdef CONFIG_DEBUG_SPINLOCK - volatile unsigned long owner_pc; - volatile unsigned long owner_cpu; -#endif -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} spinlock_t; - -#ifdef __KERNEL__ -#ifdef CONFIG_DEBUG_SPINLOCK -#define SPINLOCK_DEBUG_INIT , 0, 0 -#else -#define SPINLOCK_DEBUG_INIT /* */ -#endif - -#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0 SPINLOCK_DEBUG_INIT } - -#define spin_lock_init(x) do { *(x) = SPIN_LOCK_UNLOCKED; } while(0) -#define spin_is_locked(x) ((x)->lock != 0) -#define spin_unlock_wait(x) do { barrier(); } while(spin_is_locked(x)) -#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock) - -#ifndef CONFIG_DEBUG_SPINLOCK - -static inline void _raw_spin_lock(spinlock_t *lock) +#define __raw_spin_is_locked(x) ((x)->lock != 0) +#define __raw_spin_unlock_wait(lock) \ + do { while (__raw_spin_is_locked(lock)) cpu_relax(); } while (0) +#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock) + +static inline void __raw_spin_lock(raw_spinlock_t *lock) { unsigned long tmp; __asm__ __volatile__( - "b 1f # spin_lock\n\ + "b 1f # __raw_spin_lock\n\ 2: lwzx %0,0,%1\n\ cmpwi 0,%0,0\n\ bne+ 2b\n\ @@ -55,21 +35,13 @@ static inline void _raw_spin_lock(spinlock_t *lock) : "cr0", "memory"); } -static inline void _raw_spin_unlock(spinlock_t *lock) +static inline void __raw_spin_unlock(raw_spinlock_t *lock) { - __asm__ __volatile__("eieio # spin_unlock": : :"memory"); + __asm__ __volatile__("eieio # __raw_spin_unlock": : :"memory"); lock->lock = 0; } -#define _raw_spin_trylock(l) (!test_and_set_bit(0,&(l)->lock)) - -#else - -extern void _raw_spin_lock(spinlock_t *lock); -extern void _raw_spin_unlock(spinlock_t *lock); -extern int _raw_spin_trylock(spinlock_t *lock); - -#endif +#define __raw_spin_trylock(l) (!test_and_set_bit(0,&(l)->lock)) /* * Read-write spinlocks, allowing multiple readers @@ -81,22 +53,11 @@ extern int _raw_spin_trylock(spinlock_t *lock); * irq-safe write-lock, but readers can get non-irqsafe * read-locks. */ -typedef struct { - volatile signed int lock; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} rwlock_t; -#define RW_LOCK_UNLOCKED (rwlock_t) { 0 } -#define rwlock_init(lp) do { *(lp) = RW_LOCK_UNLOCKED; } while(0) +#define __raw_read_can_lock(rw) ((rw)->lock >= 0) +#define __raw_write_can_lock(rw) (!(rw)->lock) -#define read_can_lock(rw) ((rw)->lock >= 0) -#define write_can_lock(rw) (!(rw)->lock) - -#ifndef CONFIG_DEBUG_SPINLOCK - -static __inline__ int _raw_read_trylock(rwlock_t *rw) +static __inline__ int __raw_read_trylock(raw_rwlock_t *rw) { signed int tmp; @@ -116,7 +77,7 @@ static __inline__ int _raw_read_trylock(rwlock_t *rw) return tmp > 0; } -static __inline__ void _raw_read_lock(rwlock_t *rw) +static __inline__ void __raw_read_lock(raw_rwlock_t *rw) { signed int tmp; @@ -137,7 +98,7 @@ static __inline__ void _raw_read_lock(rwlock_t *rw) : "cr0", "memory"); } -static __inline__ void _raw_read_unlock(rwlock_t *rw) +static __inline__ void __raw_read_unlock(raw_rwlock_t *rw) { signed int tmp; @@ -153,7 +114,7 @@ static __inline__ void _raw_read_unlock(rwlock_t *rw) : "cr0", "memory"); } -static __inline__ int _raw_write_trylock(rwlock_t *rw) +static __inline__ int __raw_write_trylock(raw_rwlock_t *rw) { signed int tmp; @@ -173,7 +134,7 @@ static __inline__ int _raw_write_trylock(rwlock_t *rw) return tmp == 0; } -static __inline__ void _raw_write_lock(rwlock_t *rw) +static __inline__ void __raw_write_lock(raw_rwlock_t *rw) { signed int tmp; @@ -194,22 +155,10 @@ static __inline__ void _raw_write_lock(rwlock_t *rw) : "cr0", "memory"); } -static __inline__ void _raw_write_unlock(rwlock_t *rw) +static __inline__ void __raw_write_unlock(raw_rwlock_t *rw) { __asm__ __volatile__("eieio # write_unlock": : :"memory"); rw->lock = 0; } -#else - -extern void _raw_read_lock(rwlock_t *rw); -extern void _raw_read_unlock(rwlock_t *rw); -extern void _raw_write_lock(rwlock_t *rw); -extern void _raw_write_unlock(rwlock_t *rw); -extern int _raw_read_trylock(rwlock_t *rw); -extern int _raw_write_trylock(rwlock_t *rw); - -#endif - #endif /* __ASM_SPINLOCK_H */ -#endif /* __KERNEL__ */ diff --git a/include/asm-ppc/spinlock_types.h b/include/asm-ppc/spinlock_types.h new file mode 100644 index 000000000000..7919ccc75b8a --- /dev/null +++ b/include/asm-ppc/spinlock_types.h @@ -0,0 +1,20 @@ +#ifndef __ASM_SPINLOCK_TYPES_H +#define __ASM_SPINLOCK_TYPES_H + +#ifndef __LINUX_SPINLOCK_TYPES_H +# error "please don't include this file directly" +#endif + +typedef struct { + volatile unsigned long lock; +} raw_spinlock_t; + +#define __RAW_SPIN_LOCK_UNLOCKED { 0 } + +typedef struct { + volatile signed int lock; +} raw_rwlock_t; + +#define __RAW_RW_LOCK_UNLOCKED { 0 } + +#endif diff --git a/include/asm-ppc64/spinlock.h b/include/asm-ppc64/spinlock.h index acd11564dd75..14cb895bb607 100644 --- a/include/asm-ppc64/spinlock.h +++ b/include/asm-ppc64/spinlock.h @@ -15,36 +15,42 @@ * 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. + * + * (the type definitions are in asm/spinlock_types.h) */ #include #include #include #include -typedef struct { - volatile unsigned int lock; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} spinlock_t; +#define __raw_spin_is_locked(x) ((x)->slock != 0) -typedef struct { - volatile signed int lock; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} rwlock_t; +/* + * This returns the old value in the lock, so we succeeded + * in getting the lock if the return value is 0. + */ +static __inline__ unsigned long __spin_trylock(raw_spinlock_t *lock) +{ + unsigned long tmp, tmp2; -#ifdef __KERNEL__ -#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0 } + __asm__ __volatile__( +" lwz %1,%3(13) # __spin_trylock\n\ +1: lwarx %0,0,%2\n\ + cmpwi 0,%0,0\n\ + bne- 2f\n\ + stwcx. %1,0,%2\n\ + bne- 1b\n\ + isync\n\ +2:" : "=&r" (tmp), "=&r" (tmp2) + : "r" (&lock->slock), "i" (offsetof(struct paca_struct, lock_token)) + : "cr0", "memory"); -#define spin_is_locked(x) ((x)->lock != 0) -#define spin_lock_init(x) do { *(x) = SPIN_LOCK_UNLOCKED; } while(0) + return tmp; +} -static __inline__ void _raw_spin_unlock(spinlock_t *lock) +static int __inline__ __raw_spin_trylock(raw_spinlock_t *lock) { - __asm__ __volatile__("lwsync # spin_unlock": : :"memory"); - lock->lock = 0; + return __spin_trylock(lock) == 0; } /* @@ -64,44 +70,15 @@ static __inline__ void _raw_spin_unlock(spinlock_t *lock) #if defined(CONFIG_PPC_SPLPAR) || defined(CONFIG_PPC_ISERIES) /* We only yield to the hypervisor if we are in shared processor mode */ #define SHARED_PROCESSOR (get_paca()->lppaca.shared_proc) -extern void __spin_yield(spinlock_t *lock); -extern void __rw_yield(rwlock_t *lock); +extern void __spin_yield(raw_spinlock_t *lock); +extern void __rw_yield(raw_rwlock_t *lock); #else /* SPLPAR || ISERIES */ #define __spin_yield(x) barrier() #define __rw_yield(x) barrier() #define SHARED_PROCESSOR 0 #endif -extern void spin_unlock_wait(spinlock_t *lock); - -/* - * This returns the old value in the lock, so we succeeded - * in getting the lock if the return value is 0. - */ -static __inline__ unsigned long __spin_trylock(spinlock_t *lock) -{ - unsigned long tmp, tmp2; - - __asm__ __volatile__( -" lwz %1,%3(13) # __spin_trylock\n\ -1: lwarx %0,0,%2\n\ - cmpwi 0,%0,0\n\ - bne- 2f\n\ - stwcx. %1,0,%2\n\ - bne- 1b\n\ - isync\n\ -2:" : "=&r" (tmp), "=&r" (tmp2) - : "r" (&lock->lock), "i" (offsetof(struct paca_struct, lock_token)) - : "cr0", "memory"); - - return tmp; -} - -static int __inline__ _raw_spin_trylock(spinlock_t *lock) -{ - return __spin_trylock(lock) == 0; -} -static void __inline__ _raw_spin_lock(spinlock_t *lock) +static void __inline__ __raw_spin_lock(raw_spinlock_t *lock) { while (1) { if (likely(__spin_trylock(lock) == 0)) @@ -110,12 +87,12 @@ static void __inline__ _raw_spin_lock(spinlock_t *lock) HMT_low(); if (SHARED_PROCESSOR) __spin_yield(lock); - } while (unlikely(lock->lock != 0)); + } while (unlikely(lock->slock != 0)); HMT_medium(); } } -static void __inline__ _raw_spin_lock_flags(spinlock_t *lock, unsigned long flags) +static void __inline__ __raw_spin_lock_flags(raw_spinlock_t *lock, unsigned long flags) { unsigned long flags_dis; @@ -128,12 +105,20 @@ static void __inline__ _raw_spin_lock_flags(spinlock_t *lock, unsigned long flag HMT_low(); if (SHARED_PROCESSOR) __spin_yield(lock); - } while (unlikely(lock->lock != 0)); + } while (unlikely(lock->slock != 0)); HMT_medium(); local_irq_restore(flags_dis); } } +static __inline__ void __raw_spin_unlock(raw_spinlock_t *lock) +{ + __asm__ __volatile__("lwsync # __raw_spin_unlock": : :"memory"); + lock->slock = 0; +} + +extern void __raw_spin_unlock_wait(raw_spinlock_t *lock); + /* * Read-write spinlocks, allowing multiple readers * but only one writer. @@ -144,24 +129,15 @@ static void __inline__ _raw_spin_lock_flags(spinlock_t *lock, unsigned long flag * irq-safe write-lock, but readers can get non-irqsafe * read-locks. */ -#define RW_LOCK_UNLOCKED (rwlock_t) { 0 } -#define rwlock_init(x) do { *(x) = RW_LOCK_UNLOCKED; } while(0) - -#define read_can_lock(rw) ((rw)->lock >= 0) -#define write_can_lock(rw) (!(rw)->lock) - -static __inline__ void _raw_write_unlock(rwlock_t *rw) -{ - __asm__ __volatile__("lwsync # write_unlock": : :"memory"); - rw->lock = 0; -} +#define __raw_read_can_lock(rw) ((rw)->lock >= 0) +#define __raw_write_can_lock(rw) (!(rw)->lock) /* * This returns the old value in the lock + 1, * so we got a read lock if the return value is > 0. */ -static long __inline__ __read_trylock(rwlock_t *rw) +static long __inline__ __read_trylock(raw_rwlock_t *rw) { long tmp; @@ -180,45 +156,11 @@ static long __inline__ __read_trylock(rwlock_t *rw) return tmp; } -static int __inline__ _raw_read_trylock(rwlock_t *rw) -{ - return __read_trylock(rw) > 0; -} - -static void __inline__ _raw_read_lock(rwlock_t *rw) -{ - while (1) { - if (likely(__read_trylock(rw) > 0)) - break; - do { - HMT_low(); - if (SHARED_PROCESSOR) - __rw_yield(rw); - } while (unlikely(rw->lock < 0)); - HMT_medium(); - } -} - -static void __inline__ _raw_read_unlock(rwlock_t *rw) -{ - long tmp; - - __asm__ __volatile__( - "eieio # read_unlock\n\ -1: lwarx %0,0,%1\n\ - addic %0,%0,-1\n\ - stwcx. %0,0,%1\n\ - bne- 1b" - : "=&r"(tmp) - : "r"(&rw->lock) - : "cr0", "memory"); -} - /* * This returns the old value in the lock, * so we got the write lock if the return value is 0. */ -static __inline__ long __write_trylock(rwlock_t *rw) +static __inline__ long __write_trylock(raw_rwlock_t *rw) { long tmp, tmp2; @@ -237,12 +179,21 @@ static __inline__ long __write_trylock(rwlock_t *rw) return tmp; } -static int __inline__ _raw_write_trylock(rwlock_t *rw) +static void __inline__ __raw_read_lock(raw_rwlock_t *rw) { - return __write_trylock(rw) == 0; + while (1) { + if (likely(__read_trylock(rw) > 0)) + break; + do { + HMT_low(); + if (SHARED_PROCESSOR) + __rw_yield(rw); + } while (unlikely(rw->lock < 0)); + HMT_medium(); + } } -static void __inline__ _raw_write_lock(rwlock_t *rw) +static void __inline__ __raw_write_lock(raw_rwlock_t *rw) { while (1) { if (likely(__write_trylock(rw) == 0)) @@ -256,5 +207,35 @@ static void __inline__ _raw_write_lock(rwlock_t *rw) } } -#endif /* __KERNEL__ */ +static int __inline__ __raw_read_trylock(raw_rwlock_t *rw) +{ + return __read_trylock(rw) > 0; +} + +static int __inline__ __raw_write_trylock(raw_rwlock_t *rw) +{ + return __write_trylock(rw) == 0; +} + +static void __inline__ __raw_read_unlock(raw_rwlock_t *rw) +{ + long tmp; + + __asm__ __volatile__( + "eieio # read_unlock\n\ +1: lwarx %0,0,%1\n\ + addic %0,%0,-1\n\ + stwcx. %0,0,%1\n\ + bne- 1b" + : "=&r"(tmp) + : "r"(&rw->lock) + : "cr0", "memory"); +} + +static __inline__ void __raw_write_unlock(raw_rwlock_t *rw) +{ + __asm__ __volatile__("lwsync # write_unlock": : :"memory"); + rw->lock = 0; +} + #endif /* __ASM_SPINLOCK_H */ diff --git a/include/asm-ppc64/spinlock_types.h b/include/asm-ppc64/spinlock_types.h new file mode 100644 index 000000000000..a37c8eabb9f2 --- /dev/null +++ b/include/asm-ppc64/spinlock_types.h @@ -0,0 +1,20 @@ +#ifndef __ASM_SPINLOCK_TYPES_H +#define __ASM_SPINLOCK_TYPES_H + +#ifndef __LINUX_SPINLOCK_TYPES_H +# error "please don't include this file directly" +#endif + +typedef struct { + volatile unsigned int slock; +} raw_spinlock_t; + +#define __RAW_SPIN_LOCK_UNLOCKED { 0 } + +typedef struct { + volatile signed int lock; +} raw_rwlock_t; + +#define __RAW_RW_LOCK_UNLOCKED { 0 } + +#endif diff --git a/include/asm-s390/spinlock.h b/include/asm-s390/spinlock.h index 321b23bba1ec..273dbecf8ace 100644 --- a/include/asm-s390/spinlock.h +++ b/include/asm-s390/spinlock.h @@ -27,25 +27,19 @@ _raw_compare_and_swap(volatile unsigned int *lock, * on the local processor, one does not. * * We make no fairness assumptions. They have a cost. + * + * (the type definitions are in asm/spinlock_types.h) */ -typedef struct { - volatile unsigned int lock; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} __attribute__ ((aligned (4))) spinlock_t; - -#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0 } -#define spin_lock_init(lp) do { (lp)->lock = 0; } while(0) -#define spin_unlock_wait(lp) do { barrier(); } while(((volatile spinlock_t *)(lp))->lock) -#define spin_is_locked(x) ((x)->lock != 0) -#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock) +#define __raw_spin_is_locked(x) ((x)->lock != 0) +#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock) +#define __raw_spin_unlock_wait(lock) \ + do { while (__raw_spin_is_locked(lock)) cpu_relax(); } while (0) -extern void _raw_spin_lock_wait(spinlock_t *lp, unsigned int pc); -extern int _raw_spin_trylock_retry(spinlock_t *lp, unsigned int pc); +extern void _raw_spin_lock_wait(raw_spinlock_t *lp, unsigned int pc); +extern int _raw_spin_trylock_retry(raw_spinlock_t *lp, unsigned int pc); -static inline void _raw_spin_lock(spinlock_t *lp) +static inline void __raw_spin_lock(raw_spinlock_t *lp) { unsigned long pc = 1 | (unsigned long) __builtin_return_address(0); @@ -53,7 +47,7 @@ static inline void _raw_spin_lock(spinlock_t *lp) _raw_spin_lock_wait(lp, pc); } -static inline int _raw_spin_trylock(spinlock_t *lp) +static inline int __raw_spin_trylock(raw_spinlock_t *lp) { unsigned long pc = 1 | (unsigned long) __builtin_return_address(0); @@ -62,7 +56,7 @@ static inline int _raw_spin_trylock(spinlock_t *lp) return _raw_spin_trylock_retry(lp, pc); } -static inline void _raw_spin_unlock(spinlock_t *lp) +static inline void __raw_spin_unlock(raw_spinlock_t *lp) { _raw_compare_and_swap(&lp->lock, lp->lock, 0); } @@ -77,36 +71,25 @@ static inline void _raw_spin_unlock(spinlock_t *lp) * irq-safe write-lock, but readers can get non-irqsafe * read-locks. */ -typedef struct { - volatile unsigned int lock; - volatile unsigned long owner_pc; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} rwlock_t; - -#define RW_LOCK_UNLOCKED (rwlock_t) { 0, 0 } - -#define rwlock_init(x) do { *(x) = RW_LOCK_UNLOCKED; } while(0) /** * read_can_lock - would read_trylock() succeed? * @lock: the rwlock in question. */ -#define read_can_lock(x) ((int)(x)->lock >= 0) +#define __raw_read_can_lock(x) ((int)(x)->lock >= 0) /** * write_can_lock - would write_trylock() succeed? * @lock: the rwlock in question. */ -#define write_can_lock(x) ((x)->lock == 0) +#define __raw_write_can_lock(x) ((x)->lock == 0) -extern void _raw_read_lock_wait(rwlock_t *lp); -extern int _raw_read_trylock_retry(rwlock_t *lp); -extern void _raw_write_lock_wait(rwlock_t *lp); -extern int _raw_write_trylock_retry(rwlock_t *lp); +extern void _raw_read_lock_wait(raw_rwlock_t *lp); +extern int _raw_read_trylock_retry(raw_rwlock_t *lp); +extern void _raw_write_lock_wait(raw_rwlock_t *lp); +extern int _raw_write_trylock_retry(raw_rwlock_t *lp); -static inline void _raw_read_lock(rwlock_t *rw) +static inline void __raw_read_lock(raw_rwlock_t *rw) { unsigned int old; old = rw->lock & 0x7fffffffU; @@ -114,7 +97,7 @@ static inline void _raw_read_lock(rwlock_t *rw) _raw_read_lock_wait(rw); } -static inline void _raw_read_unlock(rwlock_t *rw) +static inline void __raw_read_unlock(raw_rwlock_t *rw) { unsigned int old, cmp; @@ -125,18 +108,18 @@ static inline void _raw_read_unlock(rwlock_t *rw) } while (cmp != old); } -static inline void _raw_write_lock(rwlock_t *rw) +static inline void __raw_write_lock(raw_rwlock_t *rw) { if (unlikely(_raw_compare_and_swap(&rw->lock, 0, 0x80000000) != 0)) _raw_write_lock_wait(rw); } -static inline void _raw_write_unlock(rwlock_t *rw) +static inline void __raw_write_unlock(raw_rwlock_t *rw) { _raw_compare_and_swap(&rw->lock, 0x80000000, 0); } -static inline int _raw_read_trylock(rwlock_t *rw) +static inline int __raw_read_trylock(raw_rwlock_t *rw) { unsigned int old; old = rw->lock & 0x7fffffffU; @@ -145,7 +128,7 @@ static inline int _raw_read_trylock(rwlock_t *rw) return _raw_read_trylock_retry(rw); } -static inline int _raw_write_trylock(rwlock_t *rw) +static inline int __raw_write_trylock(raw_rwlock_t *rw) { if (likely(_raw_compare_and_swap(&rw->lock, 0, 0x80000000) == 0)) return 1; diff --git a/include/asm-s390/spinlock_types.h b/include/asm-s390/spinlock_types.h new file mode 100644 index 000000000000..f79a2216204f --- /dev/null +++ b/include/asm-s390/spinlock_types.h @@ -0,0 +1,21 @@ +#ifndef __ASM_SPINLOCK_TYPES_H +#define __ASM_SPINLOCK_TYPES_H + +#ifndef __LINUX_SPINLOCK_TYPES_H +# error "please don't include this file directly" +#endif + +typedef struct { + volatile unsigned int lock; +} __attribute__ ((aligned (4))) raw_spinlock_t; + +#define __RAW_SPIN_LOCK_UNLOCKED { 0 } + +typedef struct { + volatile unsigned int lock; + volatile unsigned int owner_pc; +} raw_rwlock_t; + +#define __RAW_RW_LOCK_UNLOCKED { 0, 0 } + +#endif diff --git a/include/asm-sh/spinlock.h b/include/asm-sh/spinlock.h index e770b55649eb..846322d4c35d 100644 --- a/include/asm-sh/spinlock.h +++ b/include/asm-sh/spinlock.h @@ -15,20 +15,11 @@ /* * Your basic SMP spinlocks, allowing only a single CPU anywhere */ -typedef struct { - volatile unsigned long lock; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} spinlock_t; -#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0 } - -#define spin_lock_init(x) do { *(x) = SPIN_LOCK_UNLOCKED; } while(0) - -#define spin_is_locked(x) ((x)->lock != 0) -#define spin_unlock_wait(x) do { barrier(); } while (spin_is_locked(x)) -#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock) +#define __raw_spin_is_locked(x) ((x)->lock != 0) +#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock) +#define __raw_spin_unlock_wait(x) \ + do { cpu_relax(); } while (__raw_spin_is_locked(x)) /* * Simple spin lock operations. There are two variants, one clears IRQ's @@ -36,7 +27,7 @@ typedef struct { * * We make no fairness assumptions. They have a cost. */ -static inline void _raw_spin_lock(spinlock_t *lock) +static inline void __raw_spin_lock(raw_spinlock_t *lock) { __asm__ __volatile__ ( "1:\n\t" @@ -49,14 +40,14 @@ static inline void _raw_spin_lock(spinlock_t *lock) ); } -static inline void _raw_spin_unlock(spinlock_t *lock) +static inline void __raw_spin_unlock(raw_spinlock_t *lock) { assert_spin_locked(lock); lock->lock = 0; } -#define _raw_spin_trylock(x) (!test_and_set_bit(0, &(x)->lock)) +#define __raw_spin_trylock(x) (!test_and_set_bit(0, &(x)->lock)) /* * Read-write spinlocks, allowing multiple readers but only one writer. @@ -66,51 +57,40 @@ static inline void _raw_spin_unlock(spinlock_t *lock) * needs to get a irq-safe write-lock, but readers can get non-irqsafe * read-locks. */ -typedef struct { - spinlock_t lock; - atomic_t counter; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} rwlock_t; - -#define RW_LOCK_BIAS 0x01000000 -#define RW_LOCK_UNLOCKED (rwlock_t) { { 0 }, { RW_LOCK_BIAS } } -#define rwlock_init(x) do { *(x) = RW_LOCK_UNLOCKED; } while (0) - -static inline void _raw_read_lock(rwlock_t *rw) + +static inline void __raw_read_lock(raw_rwlock_t *rw) { - _raw_spin_lock(&rw->lock); + __raw_spin_lock(&rw->lock); atomic_inc(&rw->counter); - _raw_spin_unlock(&rw->lock); + __raw_spin_unlock(&rw->lock); } -static inline void _raw_read_unlock(rwlock_t *rw) +static inline void __raw_read_unlock(raw_rwlock_t *rw) { - _raw_spin_lock(&rw->lock); + __raw_spin_lock(&rw->lock); atomic_dec(&rw->counter); - _raw_spin_unlock(&rw->lock); + __raw_spin_unlock(&rw->lock); } -static inline void _raw_write_lock(rwlock_t *rw) +static inline void __raw_write_lock(raw_rwlock_t *rw) { - _raw_spin_lock(&rw->lock); + __raw_spin_lock(&rw->lock); atomic_set(&rw->counter, -1); } -static inline void _raw_write_unlock(rwlock_t *rw) +static inline void __raw_write_unlock(raw_rwlock_t *rw) { atomic_set(&rw->counter, 0); - _raw_spin_unlock(&rw->lock); + __raw_spin_unlock(&rw->lock); } -#define _raw_read_trylock(lock) generic_raw_read_trylock(lock) +#define __raw_read_trylock(lock) generic__raw_read_trylock(lock) -static inline int _raw_write_trylock(rwlock_t *rw) +static inline int __raw_write_trylock(raw_rwlock_t *rw) { if (atomic_sub_and_test(RW_LOCK_BIAS, &rw->counter)) return 1; @@ -121,4 +101,3 @@ static inline int _raw_write_trylock(rwlock_t *rw) } #endif /* __ASM_SH_SPINLOCK_H */ - diff --git a/include/asm-sh/spinlock_types.h b/include/asm-sh/spinlock_types.h new file mode 100644 index 000000000000..8c41b6c3aac8 --- /dev/null +++ b/include/asm-sh/spinlock_types.h @@ -0,0 +1,22 @@ +#ifndef __ASM_SH_SPINLOCK_TYPES_H +#define __ASM_SH_SPINLOCK_TYPES_H + +#ifndef __LINUX_SPINLOCK_TYPES_H +# error "please don't include this file directly" +#endif + +typedef struct { + volatile unsigned long lock; +} raw_spinlock_t; + +#define __SPIN_LOCK_UNLOCKED { 0 } + +typedef struct { + raw_spinlock_t lock; + atomic_t counter; +} raw_rwlock_t; + +#define RW_LOCK_BIAS 0x01000000 +#define __RAW_RW_LOCK_UNLOCKED { { 0 }, { RW_LOCK_BIAS } } + +#endif diff --git a/include/asm-sparc/spinlock.h b/include/asm-sparc/spinlock.h index 0cbd87ad4912..111727a2bb4e 100644 --- a/include/asm-sparc/spinlock.h +++ b/include/asm-sparc/spinlock.h @@ -12,96 +12,12 @@ #include -#ifdef CONFIG_DEBUG_SPINLOCK -struct _spinlock_debug { - unsigned char lock; - unsigned long owner_pc; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -}; -typedef struct _spinlock_debug spinlock_t; - -#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0, 0 } -#define spin_lock_init(lp) do { *(lp)= SPIN_LOCK_UNLOCKED; } while(0) -#define spin_is_locked(lp) (*((volatile unsigned char *)(&((lp)->lock))) != 0) -#define spin_unlock_wait(lp) do { barrier(); } while(*(volatile unsigned char *)(&(lp)->lock)) - -extern void _do_spin_lock(spinlock_t *lock, char *str); -extern int _spin_trylock(spinlock_t *lock); -extern void _do_spin_unlock(spinlock_t *lock); - -#define _raw_spin_trylock(lp) _spin_trylock(lp) -#define _raw_spin_lock(lock) _do_spin_lock(lock, "spin_lock") -#define _raw_spin_unlock(lock) _do_spin_unlock(lock) - -struct _rwlock_debug { - volatile unsigned int lock; - unsigned long owner_pc; - unsigned long reader_pc[NR_CPUS]; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -}; -typedef struct _rwlock_debug rwlock_t; - -#define RW_LOCK_UNLOCKED (rwlock_t) { 0, 0, {0} } - -#define rwlock_init(lp) do { *(lp)= RW_LOCK_UNLOCKED; } while(0) - -extern void _do_read_lock(rwlock_t *rw, char *str); -extern void _do_read_unlock(rwlock_t *rw, char *str); -extern void _do_write_lock(rwlock_t *rw, char *str); -extern void _do_write_unlock(rwlock_t *rw); - -#define _raw_read_lock(lock) \ -do { unsigned long flags; \ - local_irq_save(flags); \ - _do_read_lock(lock, "read_lock"); \ - local_irq_restore(flags); \ -} while(0) - -#define _raw_read_unlock(lock) \ -do { unsigned long flags; \ - local_irq_save(flags); \ - _do_read_unlock(lock, "read_unlock"); \ - local_irq_restore(flags); \ -} while(0) - -#define _raw_write_lock(lock) \ -do { unsigned long flags; \ - local_irq_save(flags); \ - _do_write_lock(lock, "write_lock"); \ - local_irq_restore(flags); \ -} while(0) - -#define _raw_write_unlock(lock) \ -do { unsigned long flags; \ - local_irq_save(flags); \ - _do_write_unlock(lock); \ - local_irq_restore(flags); \ -} while(0) - -#else /* !CONFIG_DEBUG_SPINLOCK */ - -typedef struct { - unsigned char lock; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} spinlock_t; - -#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0 } - -#define spin_lock_init(lock) (*((unsigned char *)(lock)) = 0) -#define spin_is_locked(lock) (*((volatile unsigned char *)(lock)) != 0) +#define __raw_spin_is_locked(lock) (*((volatile unsigned char *)(lock)) != 0) -#define spin_unlock_wait(lock) \ -do { \ - barrier(); \ -} while(*((volatile unsigned char *)lock)) +#define __raw_spin_unlock_wait(lock) \ + do { while (__raw_spin_is_locked(lock)) cpu_relax(); } while (0) -extern __inline__ void _raw_spin_lock(spinlock_t *lock) +extern __inline__ void __raw_spin_lock(raw_spinlock_t *lock) { __asm__ __volatile__( "\n1:\n\t" @@ -121,7 +37,7 @@ extern __inline__ void _raw_spin_lock(spinlock_t *lock) : "g2", "memory", "cc"); } -extern __inline__ int _raw_spin_trylock(spinlock_t *lock) +extern __inline__ int __raw_spin_trylock(raw_spinlock_t *lock) { unsigned int result; __asm__ __volatile__("ldstub [%1], %0" @@ -131,7 +47,7 @@ extern __inline__ int _raw_spin_trylock(spinlock_t *lock) return (result == 0); } -extern __inline__ void _raw_spin_unlock(spinlock_t *lock) +extern __inline__ void __raw_spin_unlock(raw_spinlock_t *lock) { __asm__ __volatile__("stb %%g0, [%0]" : : "r" (lock) : "memory"); } @@ -147,23 +63,11 @@ extern __inline__ void _raw_spin_unlock(spinlock_t *lock) * * XXX This might create some problems with my dual spinlock * XXX scheme, deadlocks etc. -DaveM - */ -typedef struct { - volatile unsigned int lock; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} rwlock_t; - -#define RW_LOCK_UNLOCKED (rwlock_t) { 0 } - -#define rwlock_init(lp) do { *(lp)= RW_LOCK_UNLOCKED; } while(0) - - -/* Sort of like atomic_t's on Sparc, but even more clever. + * + * Sort of like atomic_t's on Sparc, but even more clever. * * ------------------------------------ - * | 24-bit counter | wlock | rwlock_t + * | 24-bit counter | wlock | raw_rwlock_t * ------------------------------------ * 31 8 7 0 * @@ -174,9 +78,9 @@ typedef struct { * * Unfortunately this scheme limits us to ~16,000,000 cpus. */ -extern __inline__ void _read_lock(rwlock_t *rw) +extern __inline__ void __read_lock(raw_rwlock_t *rw) { - register rwlock_t *lp asm("g1"); + register raw_rwlock_t *lp asm("g1"); lp = rw; __asm__ __volatile__( "mov %%o7, %%g4\n\t" @@ -187,16 +91,16 @@ extern __inline__ void _read_lock(rwlock_t *rw) : "g2", "g4", "memory", "cc"); } -#define _raw_read_lock(lock) \ +#define __raw_read_lock(lock) \ do { unsigned long flags; \ local_irq_save(flags); \ - _read_lock(lock); \ + __raw_read_lock(lock); \ local_irq_restore(flags); \ } while(0) -extern __inline__ void _read_unlock(rwlock_t *rw) +extern __inline__ void __read_unlock(raw_rwlock_t *rw) { - register rwlock_t *lp asm("g1"); + register raw_rwlock_t *lp asm("g1"); lp = rw; __asm__ __volatile__( "mov %%o7, %%g4\n\t" @@ -207,16 +111,16 @@ extern __inline__ void _read_unlock(rwlock_t *rw) : "g2", "g4", "memory", "cc"); } -#define _raw_read_unlock(lock) \ +#define __raw_read_unlock(lock) \ do { unsigned long flags; \ local_irq_save(flags); \ - _read_unlock(lock); \ + __raw_read_unlock(lock); \ local_irq_restore(flags); \ } while(0) -extern __inline__ void _raw_write_lock(rwlock_t *rw) +extern __inline__ void __raw_write_lock(raw_rwlock_t *rw) { - register rwlock_t *lp asm("g1"); + register raw_rwlock_t *lp asm("g1"); lp = rw; __asm__ __volatile__( "mov %%o7, %%g4\n\t" @@ -227,11 +131,9 @@ extern __inline__ void _raw_write_lock(rwlock_t *rw) : "g2", "g4", "memory", "cc"); } -#define _raw_write_unlock(rw) do { (rw)->lock = 0; } while(0) - -#endif /* CONFIG_DEBUG_SPINLOCK */ +#define __raw_write_unlock(rw) do { (rw)->lock = 0; } while(0) -#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock) +#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock) #endif /* !(__ASSEMBLY__) */ diff --git a/include/asm-sparc/spinlock_types.h b/include/asm-sparc/spinlock_types.h new file mode 100644 index 000000000000..0a0fb116c4ec --- /dev/null +++ b/include/asm-sparc/spinlock_types.h @@ -0,0 +1,20 @@ +#ifndef __SPARC_SPINLOCK_TYPES_H +#define __SPARC_SPINLOCK_TYPES_H + +#ifndef __LINUX_SPINLOCK_TYPES_H +# error "please don't include this file directly" +#endif + +typedef struct { + unsigned char lock; +} raw_spinlock_t; + +#define __RAW_SPIN_LOCK_UNLOCKED { 0 } + +typedef struct { + volatile unsigned int lock; +} raw_rwlock_t; + +#define __RAW_RW_LOCK_UNLOCKED { 0 } + +#endif diff --git a/include/asm-sparc64/spinlock.h b/include/asm-sparc64/spinlock.h index a02c4370eb42..ec85d12d73b9 100644 --- a/include/asm-sparc64/spinlock.h +++ b/include/asm-sparc64/spinlock.h @@ -29,24 +29,13 @@ * must be pre-V9 branches. */ -#ifndef CONFIG_DEBUG_SPINLOCK +#define __raw_spin_is_locked(lp) ((lp)->lock != 0) -typedef struct { - volatile unsigned char lock; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} spinlock_t; -#define SPIN_LOCK_UNLOCKED (spinlock_t) {0,} +#define __raw_spin_unlock_wait(lp) \ + do { rmb(); \ + } while((lp)->lock) -#define spin_lock_init(lp) do { *(lp)= SPIN_LOCK_UNLOCKED; } while(0) -#define spin_is_locked(lp) ((lp)->lock != 0) - -#define spin_unlock_wait(lp) \ -do { rmb(); \ -} while((lp)->lock) - -static inline void _raw_spin_lock(spinlock_t *lock) +static inline void __raw_spin_lock(raw_spinlock_t *lock) { unsigned long tmp; @@ -67,7 +56,7 @@ static inline void _raw_spin_lock(spinlock_t *lock) : "memory"); } -static inline int _raw_spin_trylock(spinlock_t *lock) +static inline int __raw_spin_trylock(raw_spinlock_t *lock) { unsigned long result; @@ -81,7 +70,7 @@ static inline int _raw_spin_trylock(spinlock_t *lock) return (result == 0UL); } -static inline void _raw_spin_unlock(spinlock_t *lock) +static inline void __raw_spin_unlock(raw_spinlock_t *lock) { __asm__ __volatile__( " membar #StoreStore | #LoadStore\n" @@ -91,7 +80,7 @@ static inline void _raw_spin_unlock(spinlock_t *lock) : "memory"); } -static inline void _raw_spin_lock_flags(spinlock_t *lock, unsigned long flags) +static inline void __raw_spin_lock_flags(raw_spinlock_t *lock, unsigned long flags) { unsigned long tmp1, tmp2; @@ -115,51 +104,9 @@ static inline void _raw_spin_lock_flags(spinlock_t *lock, unsigned long flags) : "memory"); } -#else /* !(CONFIG_DEBUG_SPINLOCK) */ - -typedef struct { - volatile unsigned char lock; - unsigned int owner_pc, owner_cpu; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} spinlock_t; -#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0, 0, 0xff } -#define spin_lock_init(lp) do { *(lp)= SPIN_LOCK_UNLOCKED; } while(0) -#define spin_is_locked(__lock) ((__lock)->lock != 0) -#define spin_unlock_wait(__lock) \ -do { \ - rmb(); \ -} while((__lock)->lock) - -extern void _do_spin_lock(spinlock_t *lock, char *str, unsigned long caller); -extern void _do_spin_unlock(spinlock_t *lock); -extern int _do_spin_trylock(spinlock_t *lock, unsigned long caller); - -#define _raw_spin_trylock(lp) \ - _do_spin_trylock(lp, (unsigned long) __builtin_return_address(0)) -#define _raw_spin_lock(lock) \ - _do_spin_lock(lock, "spin_lock", \ - (unsigned long) __builtin_return_address(0)) -#define _raw_spin_unlock(lock) _do_spin_unlock(lock) -#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock) - -#endif /* CONFIG_DEBUG_SPINLOCK */ - /* Multi-reader locks, these are much saner than the 32-bit Sparc ones... */ -#ifndef CONFIG_DEBUG_SPINLOCK - -typedef struct { - volatile unsigned int lock; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} rwlock_t; -#define RW_LOCK_UNLOCKED (rwlock_t) {0,} -#define rwlock_init(lp) do { *(lp) = RW_LOCK_UNLOCKED; } while(0) - -static void inline __read_lock(rwlock_t *lock) +static void inline __read_lock(raw_rwlock_t *lock) { unsigned long tmp1, tmp2; @@ -184,7 +131,7 @@ static void inline __read_lock(rwlock_t *lock) : "memory"); } -static void inline __read_unlock(rwlock_t *lock) +static void inline __read_unlock(raw_rwlock_t *lock) { unsigned long tmp1, tmp2; @@ -201,7 +148,7 @@ static void inline __read_unlock(rwlock_t *lock) : "memory"); } -static void inline __write_lock(rwlock_t *lock) +static void inline __write_lock(raw_rwlock_t *lock) { unsigned long mask, tmp1, tmp2; @@ -228,7 +175,7 @@ static void inline __write_lock(rwlock_t *lock) : "memory"); } -static void inline __write_unlock(rwlock_t *lock) +static void inline __write_unlock(raw_rwlock_t *lock) { __asm__ __volatile__( " membar #LoadStore | #StoreStore\n" @@ -238,7 +185,7 @@ static void inline __write_unlock(rwlock_t *lock) : "memory"); } -static int inline __write_trylock(rwlock_t *lock) +static int inline __write_trylock(raw_rwlock_t *lock) { unsigned long mask, tmp1, tmp2, result; @@ -263,78 +210,15 @@ static int inline __write_trylock(rwlock_t *lock) return result; } -#define _raw_read_lock(p) __read_lock(p) -#define _raw_read_unlock(p) __read_unlock(p) -#define _raw_write_lock(p) __write_lock(p) -#define _raw_write_unlock(p) __write_unlock(p) -#define _raw_write_trylock(p) __write_trylock(p) - -#else /* !(CONFIG_DEBUG_SPINLOCK) */ - -typedef struct { - volatile unsigned long lock; - unsigned int writer_pc, writer_cpu; - unsigned int reader_pc[NR_CPUS]; -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} rwlock_t; -#define RW_LOCK_UNLOCKED (rwlock_t) { 0, 0, 0xff, { } } -#define rwlock_init(lp) do { *(lp) = RW_LOCK_UNLOCKED; } while(0) - -extern void _do_read_lock(rwlock_t *rw, char *str, unsigned long caller); -extern void _do_read_unlock(rwlock_t *rw, char *str, unsigned long caller); -extern void _do_write_lock(rwlock_t *rw, char *str, unsigned long caller); -extern void _do_write_unlock(rwlock_t *rw, unsigned long caller); -extern int _do_write_trylock(rwlock_t *rw, char *str, unsigned long caller); - -#define _raw_read_lock(lock) \ -do { unsigned long flags; \ - local_irq_save(flags); \ - _do_read_lock(lock, "read_lock", \ - (unsigned long) __builtin_return_address(0)); \ - local_irq_restore(flags); \ -} while(0) - -#define _raw_read_unlock(lock) \ -do { unsigned long flags; \ - local_irq_save(flags); \ - _do_read_unlock(lock, "read_unlock", \ - (unsigned long) __builtin_return_address(0)); \ - local_irq_restore(flags); \ -} while(0) - -#define _raw_write_lock(lock) \ -do { unsigned long flags; \ - local_irq_save(flags); \ - _do_write_lock(lock, "write_lock", \ - (unsigned long) __builtin_return_address(0)); \ - local_irq_restore(flags); \ -} while(0) - -#define _raw_write_unlock(lock) \ -do { unsigned long flags; \ - local_irq_save(flags); \ - _do_write_unlock(lock, \ - (unsigned long) __builtin_return_address(0)); \ - local_irq_restore(flags); \ -} while(0) - -#define _raw_write_trylock(lock) \ -({ unsigned long flags; \ - int val; \ - local_irq_save(flags); \ - val = _do_write_trylock(lock, "write_trylock", \ - (unsigned long) __builtin_return_address(0)); \ - local_irq_restore(flags); \ - val; \ -}) - -#endif /* CONFIG_DEBUG_SPINLOCK */ - -#define _raw_read_trylock(lock) generic_raw_read_trylock(lock) -#define read_can_lock(rw) (!((rw)->lock & 0x80000000UL)) -#define write_can_lock(rw) (!(rw)->lock) +#define __raw_read_lock(p) __read_lock(p) +#define __raw_read_unlock(p) __read_unlock(p) +#define __raw_write_lock(p) __write_lock(p) +#define __raw_write_unlock(p) __write_unlock(p) +#define __raw_write_trylock(p) __write_trylock(p) + +#define __raw_read_trylock(lock) generic__raw_read_trylock(lock) +#define __raw_read_can_lock(rw) (!((rw)->lock & 0x80000000UL)) +#define __raw_write_can_lock(rw) (!(rw)->lock) #endif /* !(__ASSEMBLY__) */ diff --git a/include/asm-sparc64/spinlock_types.h b/include/asm-sparc64/spinlock_types.h new file mode 100644 index 000000000000..e128112a0d7c --- /dev/null +++ b/include/asm-sparc64/spinlock_types.h @@ -0,0 +1,20 @@ +#ifndef __SPARC64_SPINLOCK_TYPES_H +#define __SPARC64_SPINLOCK_TYPES_H + +#ifndef __LINUX_SPINLOCK_TYPES_H +# error "please don't include this file directly" +#endif + +typedef struct { + volatile unsigned char lock; +} raw_spinlock_t; + +#define __RAW_SPIN_LOCK_UNLOCKED { 0 } + +typedef struct { + volatile unsigned int lock; +} raw_rwlock_t; + +#define __RAW_RW_LOCK_UNLOCKED { 0 } + +#endif diff --git a/include/asm-x86_64/spinlock.h b/include/asm-x86_64/spinlock.h index 5aeb57a3baad..69636831ad2f 100644 --- a/include/asm-x86_64/spinlock.h +++ b/include/asm-x86_64/spinlock.h @@ -6,47 +6,21 @@ #include #include -extern int printk(const char * fmt, ...) - __attribute__ ((format (printf, 1, 2))); - /* * Your basic SMP spinlocks, allowing only a single CPU anywhere - */ - -typedef struct { - volatile unsigned int lock; -#ifdef CONFIG_DEBUG_SPINLOCK - unsigned magic; -#endif -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} spinlock_t; - -#define SPINLOCK_MAGIC 0xdead4ead - -#ifdef CONFIG_DEBUG_SPINLOCK -#define SPINLOCK_MAGIC_INIT , SPINLOCK_MAGIC -#else -#define SPINLOCK_MAGIC_INIT /* */ -#endif - -#define SPIN_LOCK_UNLOCKED (spinlock_t) { 1 SPINLOCK_MAGIC_INIT } - -#define spin_lock_init(x) do { *(x) = SPIN_LOCK_UNLOCKED; } while(0) - -/* + * * Simple spin lock operations. There are two variants, one clears IRQ's * on the local processor, one does not. * * We make no fairness assumptions. They have a cost. + * + * (the type definitions are in asm/spinlock_types.h) */ -#define spin_is_locked(x) (*(volatile signed char *)(&(x)->lock) <= 0) -#define spin_unlock_wait(x) do { barrier(); } while(spin_is_locked(x)) -#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock) +#define __raw_spin_is_locked(x) \ + (*(volatile signed char *)(&(x)->slock) <= 0) -#define spin_lock_string \ +#define __raw_spin_lock_string \ "\n1:\t" \ "lock ; decb %0\n\t" \ "js 2f\n" \ @@ -58,74 +32,40 @@ typedef struct { "jmp 1b\n" \ LOCK_SECTION_END -/* - * This works. Despite all the confusion. - * (except on PPro SMP or if we are using OOSTORE) - * (PPro errata 66, 92) - */ - -#if !defined(CONFIG_X86_OOSTORE) && !defined(CONFIG_X86_PPRO_FENCE) - -#define spin_unlock_string \ +#define __raw_spin_unlock_string \ "movb $1,%0" \ - :"=m" (lock->lock) : : "memory" - - -static inline void _raw_spin_unlock(spinlock_t *lock) -{ -#ifdef CONFIG_DEBUG_SPINLOCK - BUG_ON(lock->magic != SPINLOCK_MAGIC); - assert_spin_locked(lock); -#endif - __asm__ __volatile__( - spin_unlock_string - ); -} - -#else - -#define spin_unlock_string \ - "xchgb %b0, %1" \ - :"=q" (oldval), "=m" (lock->lock) \ - :"0" (oldval) : "memory" + :"=m" (lock->slock) : : "memory" -static inline void _raw_spin_unlock(spinlock_t *lock) +static inline void __raw_spin_lock(raw_spinlock_t *lock) { - char oldval = 1; -#ifdef CONFIG_DEBUG_SPINLOCK - BUG_ON(lock->magic != SPINLOCK_MAGIC); - assert_spin_locked(lock); -#endif __asm__ __volatile__( - spin_unlock_string - ); + __raw_spin_lock_string + :"=m" (lock->slock) : : "memory"); } -#endif +#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock) -static inline int _raw_spin_trylock(spinlock_t *lock) +static inline int __raw_spin_trylock(raw_spinlock_t *lock) { char oldval; + __asm__ __volatile__( "xchgb %b0,%1" - :"=q" (oldval), "=m" (lock->lock) + :"=q" (oldval), "=m" (lock->slock) :"0" (0) : "memory"); + return oldval > 0; } -static inline void _raw_spin_lock(spinlock_t *lock) +static inline void __raw_spin_unlock(raw_spinlock_t *lock) { -#ifdef CONFIG_DEBUG_SPINLOCK - if (lock->magic != SPINLOCK_MAGIC) { - printk("eip: %p\n", __builtin_return_address(0)); - BUG(); - } -#endif __asm__ __volatile__( - spin_lock_string - :"=m" (lock->lock) : : "memory"); + __raw_spin_unlock_string + ); } +#define __raw_spin_unlock_wait(lock) \ + do { while (__raw_spin_is_locked(lock)) cpu_relax(); } while (0) /* * Read-write spinlocks, allowing multiple readers @@ -136,33 +76,7 @@ static inline void _raw_spin_lock(spinlock_t *lock) * can "mix" irq-safe locks - any writer needs to get a * irq-safe write-lock, but readers can get non-irqsafe * read-locks. - */ -typedef struct { - volatile unsigned int lock; -#ifdef CONFIG_DEBUG_SPINLOCK - unsigned magic; -#endif -#ifdef CONFIG_PREEMPT - unsigned int break_lock; -#endif -} rwlock_t; - -#define RWLOCK_MAGIC 0xdeaf1eed - -#ifdef CONFIG_DEBUG_SPINLOCK -#define RWLOCK_MAGIC_INIT , RWLOCK_MAGIC -#else -#define RWLOCK_MAGIC_INIT /* */ -#endif - -#define RW_LOCK_UNLOCKED (rwlock_t) { RW_LOCK_BIAS RWLOCK_MAGIC_INIT } - -#define rwlock_init(x) do { *(x) = RW_LOCK_UNLOCKED; } while(0) - -#define read_can_lock(x) ((int)(x)->lock > 0) -#define write_can_lock(x) ((x)->lock == RW_LOCK_BIAS) - -/* + * * On x86, we implement read-write locks as a 32-bit counter * with the high bit (sign) being the "contended" bit. * @@ -170,29 +84,24 @@ typedef struct { * * Changed to use the same technique as rw semaphores. See * semaphore.h for details. -ben + * + * the helpers are in arch/i386/kernel/semaphore.c */ -/* the spinlock helpers are in arch/i386/kernel/semaphore.c */ -static inline void _raw_read_lock(rwlock_t *rw) +#define __raw_read_can_lock(x) ((int)(x)->lock > 0) +#define __raw_write_can_lock(x) ((x)->lock == RW_LOCK_BIAS) + +static inline void __raw_read_lock(raw_rwlock_t *rw) { -#ifdef CONFIG_DEBUG_SPINLOCK - BUG_ON(rw->magic != RWLOCK_MAGIC); -#endif __build_read_lock(rw, "__read_lock_failed"); } -static inline void _raw_write_lock(rwlock_t *rw) +static inline void __raw_write_lock(raw_rwlock_t *rw) { -#ifdef CONFIG_DEBUG_SPINLOCK - BUG_ON(rw->magic != RWLOCK_MAGIC); -#endif __build_write_lock(rw, "__write_lock_failed"); } -#define _raw_read_unlock(rw) asm volatile("lock ; incl %0" :"=m" ((rw)->lock) : : "memory") -#define _raw_write_unlock(rw) asm volatile("lock ; addl $" RW_LOCK_BIAS_STR ",%0":"=m" ((rw)->lock) : : "memory") - -static inline int _raw_read_trylock(rwlock_t *lock) +static inline int __raw_read_trylock(raw_rwlock_t *lock) { atomic_t *count = (atomic_t *)lock; atomic_dec(count); @@ -202,7 +111,7 @@ static inline int _raw_read_trylock(rwlock_t *lock) return 0; } -static inline int _raw_write_trylock(rwlock_t *lock) +static inline int __raw_write_trylock(raw_rwlock_t *lock) { atomic_t *count = (atomic_t *)lock; if (atomic_sub_and_test(RW_LOCK_BIAS, count)) @@ -211,4 +120,15 @@ static inline int _raw_write_trylock(rwlock_t *lock) return 0; } +static inline void __raw_read_unlock(raw_rwlock_t *rw) +{ + asm volatile("lock ; incl %0" :"=m" (rw->lock) : : "memory"); +} + +static inline void __raw_write_unlock(raw_rwlock_t *rw) +{ + asm volatile("lock ; addl $" RW_LOCK_BIAS_STR ",%0" + : "=m" (rw->lock) : : "memory"); +} + #endif /* __ASM_SPINLOCK_H */ diff --git a/include/asm-x86_64/spinlock_types.h b/include/asm-x86_64/spinlock_types.h new file mode 100644 index 000000000000..59efe849f351 --- /dev/null +++ b/include/asm-x86_64/spinlock_types.h @@ -0,0 +1,20 @@ +#ifndef __ASM_SPINLOCK_TYPES_H +#define __ASM_SPINLOCK_TYPES_H + +#ifndef __LINUX_SPINLOCK_TYPES_H +# error "please don't include this file directly" +#endif + +typedef struct { + volatile unsigned int slock; +} raw_spinlock_t; + +#define __RAW_SPIN_LOCK_UNLOCKED { 1 } + +typedef struct { + volatile unsigned int lock; +} raw_rwlock_t; + +#define __RAW_RW_LOCK_UNLOCKED { RW_LOCK_BIAS } + +#endif diff --git a/include/linux/bit_spinlock.h b/include/linux/bit_spinlock.h new file mode 100644 index 000000000000..6b20af0bbb79 --- /dev/null +++ b/include/linux/bit_spinlock.h @@ -0,0 +1,77 @@ +#ifndef __LINUX_BIT_SPINLOCK_H +#define __LINUX_BIT_SPINLOCK_H + +/* + * bit-based spin_lock() + * + * Don't use this unless you really need to: spin_lock() and spin_unlock() + * are significantly faster. + */ +static inline void bit_spin_lock(int bitnum, unsigned long *addr) +{ + /* + * Assuming the lock is uncontended, this never enters + * the body of the outer loop. If it is contended, then + * within the inner loop a non-atomic test is used to + * busywait with less bus contention for a good time to + * attempt to acquire the lock bit. + */ + preempt_disable(); +#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) + while (test_and_set_bit(bitnum, addr)) { + while (test_bit(bitnum, addr)) { + preempt_enable(); + cpu_relax(); + preempt_disable(); + } + } +#endif + __acquire(bitlock); +} + +/* + * Return true if it was acquired + */ +static inline int bit_spin_trylock(int bitnum, unsigned long *addr) +{ + preempt_disable(); +#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) + if (test_and_set_bit(bitnum, addr)) { + preempt_enable(); + return 0; + } +#endif + __acquire(bitlock); + return 1; +} + +/* + * bit-based spin_unlock() + */ +static inline void bit_spin_unlock(int bitnum, unsigned long *addr) +{ +#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) + BUG_ON(!test_bit(bitnum, addr)); + smp_mb__before_clear_bit(); + clear_bit(bitnum, addr); +#endif + preempt_enable(); + __release(bitlock); +} + +/* + * Return true if the lock is held. + */ +static inline int bit_spin_is_locked(int bitnum, unsigned long *addr) +{ +#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) + return test_bit(bitnum, addr); +#elif defined CONFIG_PREEMPT + return preempt_count(); +#else + return 1; +#endif +} + +#endif /* __LINUX_BIT_SPINLOCK_H */ + diff --git a/include/linux/jbd.h b/include/linux/jbd.h index 84321a4cac93..de097269bd7f 100644 --- a/include/linux/jbd.h +++ b/include/linux/jbd.h @@ -28,6 +28,7 @@ #include #include #include +#include #include #endif diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h index d6ba068719b6..cdc99a27840d 100644 --- a/include/linux/spinlock.h +++ b/include/linux/spinlock.h @@ -2,7 +2,48 @@ #define __LINUX_SPINLOCK_H /* - * include/linux/spinlock.h - generic locking declarations + * include/linux/spinlock.h - generic spinlock/rwlock declarations + * + * here's the role of the various spinlock/rwlock related include files: + * + * on SMP builds: + * + * asm/spinlock_types.h: contains the raw_spinlock_t/raw_rwlock_t and the + * initializers + * + * linux/spinlock_types.h: + * defines the generic type and initializers + * + * asm/spinlock.h: contains the __raw_spin_*()/etc. lowlevel + * implementations, mostly inline assembly code + * + * (also included on UP-debug builds:) + * + * linux/spinlock_api_smp.h: + * contains the prototypes for the _spin_*() APIs. + * + * linux/spinlock.h: builds the final spin_*() APIs. + * + * on UP builds: + * + * linux/spinlock_type_up.h: + * contains the generic, simplified UP spinlock type. + * (which is an empty structure on non-debug builds) + * + * linux/spinlock_types.h: + * defines the generic type and initializers + * + * linux/spinlock_up.h: + * contains the __raw_spin_*()/etc. version of UP + * builds. (which are NOPs on non-debug, non-preempt + * builds) + * + * (included on UP-non-debug builds:) + * + * linux/spinlock_api_up.h: + * builds the _spin_*() APIs. + * + * linux/spinlock.h: builds the final spin_*() APIs. */ #include @@ -13,7 +54,6 @@ #include #include -#include /* for cpu relax */ #include /* @@ -35,423 +75,84 @@ #define __lockfunc fastcall __attribute__((section(".spinlock.text"))) /* - * If CONFIG_SMP is set, pull in the _raw_* definitions + * Pull the raw_spinlock_t and raw_rwlock_t definitions: */ -#ifdef CONFIG_SMP - -#define assert_spin_locked(x) BUG_ON(!spin_is_locked(x)) -#include - -int __lockfunc _spin_trylock(spinlock_t *lock); -int __lockfunc _read_trylock(rwlock_t *lock); -int __lockfunc _write_trylock(rwlock_t *lock); - -void __lockfunc _spin_lock(spinlock_t *lock) __acquires(spinlock_t); -void __lockfunc _read_lock(rwlock_t *lock) __acquires(rwlock_t); -void __lockfunc _write_lock(rwlock_t *lock) __acquires(rwlock_t); - -void __lockfunc _spin_unlock(spinlock_t *lock) __releases(spinlock_t); -void __lockfunc _read_unlock(rwlock_t *lock) __releases(rwlock_t); -void __lockfunc _write_unlock(rwlock_t *lock) __releases(rwlock_t); - -unsigned long __lockfunc _spin_lock_irqsave(spinlock_t *lock) __acquires(spinlock_t); -unsigned long __lockfunc _read_lock_irqsave(rwlock_t *lock) __acquires(rwlock_t); -unsigned long __lockfunc _write_lock_irqsave(rwlock_t *lock) __acquires(rwlock_t); - -void __lockfunc _spin_lock_irq(spinlock_t *lock) __acquires(spinlock_t); -void __lockfunc _spin_lock_bh(spinlock_t *lock) __acquires(spinlock_t); -void __lockfunc _read_lock_irq(rwlock_t *lock) __acquires(rwlock_t); -void __lockfunc _read_lock_bh(rwlock_t *lock) __acquires(rwlock_t); -void __lockfunc _write_lock_irq(rwlock_t *lock) __acquires(rwlock_t); -void __lockfunc _write_lock_bh(rwlock_t *lock) __acquires(rwlock_t); - -void __lockfunc _spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags) __releases(spinlock_t); -void __lockfunc _spin_unlock_irq(spinlock_t *lock) __releases(spinlock_t); -void __lockfunc _spin_unlock_bh(spinlock_t *lock) __releases(spinlock_t); -void __lockfunc _read_unlock_irqrestore(rwlock_t *lock, unsigned long flags) __releases(rwlock_t); -void __lockfunc _read_unlock_irq(rwlock_t *lock) __releases(rwlock_t); -void __lockfunc _read_unlock_bh(rwlock_t *lock) __releases(rwlock_t); -void __lockfunc _write_unlock_irqrestore(rwlock_t *lock, unsigned long flags) __releases(rwlock_t); -void __lockfunc _write_unlock_irq(rwlock_t *lock) __releases(rwlock_t); -void __lockfunc _write_unlock_bh(rwlock_t *lock) __releases(rwlock_t); - -int __lockfunc _spin_trylock_bh(spinlock_t *lock); -int __lockfunc generic_raw_read_trylock(rwlock_t *lock); -int in_lock_functions(unsigned long addr); - -#else +#include -#define in_lock_functions(ADDR) 0 +extern int __lockfunc generic__raw_read_trylock(raw_rwlock_t *lock); -#if !defined(CONFIG_PREEMPT) && !defined(CONFIG_DEBUG_SPINLOCK) -# define _atomic_dec_and_lock(atomic,lock) atomic_dec_and_test(atomic) -# define ATOMIC_DEC_AND_LOCK -#endif - -#ifdef CONFIG_DEBUG_SPINLOCK - -#define SPINLOCK_MAGIC 0x1D244B3C -typedef struct { - unsigned long magic; - volatile unsigned long lock; - volatile unsigned int babble; - const char *module; - char *owner; - int oline; -} spinlock_t; -#define SPIN_LOCK_UNLOCKED (spinlock_t) { SPINLOCK_MAGIC, 0, 10, __FILE__ , NULL, 0} - -#define spin_lock_init(x) \ - do { \ - (x)->magic = SPINLOCK_MAGIC; \ - (x)->lock = 0; \ - (x)->babble = 5; \ - (x)->module = __FILE__; \ - (x)->owner = NULL; \ - (x)->oline = 0; \ - } while (0) - -#define CHECK_LOCK(x) \ - do { \ - if ((x)->magic != SPINLOCK_MAGIC) { \ - printk(KERN_ERR "%s:%d: spin_is_locked on uninitialized spinlock %p.\n", \ - __FILE__, __LINE__, (x)); \ - } \ - } while(0) - -#define _raw_spin_lock(x) \ - do { \ - CHECK_LOCK(x); \ - if ((x)->lock&&(x)->babble) { \ - (x)->babble--; \ - printk("%s:%d: spin_lock(%s:%p) already locked by %s/%d\n", \ - __FILE__,__LINE__, (x)->module, \ - (x), (x)->owner, (x)->oline); \ - } \ - (x)->lock = 1; \ - (x)->owner = __FILE__; \ - (x)->oline = __LINE__; \ - } while (0) - -/* without debugging, spin_is_locked on UP always says - * FALSE. --> printk if already locked. */ -#define spin_is_locked(x) \ - ({ \ - CHECK_LOCK(x); \ - if ((x)->lock&&(x)->babble) { \ - (x)->babble--; \ - printk("%s:%d: spin_is_locked(%s:%p) already locked by %s/%d\n", \ - __FILE__,__LINE__, (x)->module, \ - (x), (x)->owner, (x)->oline); \ - } \ - 0; \ - }) - -/* with debugging, assert_spin_locked() on UP does check - * the lock value properly */ -#define assert_spin_locked(x) \ - ({ \ - CHECK_LOCK(x); \ - BUG_ON(!(x)->lock); \ - }) - -/* without debugging, spin_trylock on UP always says - * TRUE. --> printk if already locked. */ -#define _raw_spin_trylock(x) \ - ({ \ - CHECK_LOCK(x); \ - if ((x)->lock&&(x)->babble) { \ - (x)->babble--; \ - printk("%s:%d: spin_trylock(%s:%p) already locked by %s/%d\n", \ - __FILE__,__LINE__, (x)->module, \ - (x), (x)->owner, (x)->oline); \ - } \ - (x)->lock = 1; \ - (x)->owner = __FILE__; \ - (x)->oline = __LINE__; \ - 1; \ - }) - -#define spin_unlock_wait(x) \ - do { \ - CHECK_LOCK(x); \ - if ((x)->lock&&(x)->babble) { \ - (x)->babble--; \ - printk("%s:%d: spin_unlock_wait(%s:%p) owned by %s/%d\n", \ - __FILE__,__LINE__, (x)->module, (x), \ - (x)->owner, (x)->oline); \ - }\ - } while (0) - -#define _raw_spin_unlock(x) \ - do { \ - CHECK_LOCK(x); \ - if (!(x)->lock&&(x)->babble) { \ - (x)->babble--; \ - printk("%s:%d: spin_unlock(%s:%p) not locked\n", \ - __FILE__,__LINE__, (x)->module, (x));\ - } \ - (x)->lock = 0; \ - } while (0) -#else /* - * gcc versions before ~2.95 have a nasty bug with empty initializers. + * Pull the __raw*() functions/declarations (UP-nondebug doesnt need them): */ -#if (__GNUC__ > 2) - typedef struct { } spinlock_t; - #define SPIN_LOCK_UNLOCKED (spinlock_t) { } +#if defined(CONFIG_SMP) +# include #else - typedef struct { int gcc_is_buggy; } spinlock_t; - #define SPIN_LOCK_UNLOCKED (spinlock_t) { 0 } +# include #endif +#define spin_lock_init(lock) do { *(lock) = SPIN_LOCK_UNLOCKED; } while (0) +#define rwlock_init(lock) do { *(lock) = RW_LOCK_UNLOCKED; } while (0) + +#define spin_is_locked(lock) __raw_spin_is_locked(&(lock)->raw_lock) + +/** + * spin_unlock_wait - wait until the spinlock gets unlocked + * @lock: the spinlock in question. + */ +#define spin_unlock_wait(lock) __raw_spin_unlock_wait(&(lock)->raw_lock) + /* - * If CONFIG_SMP is unset, declare the _raw_* definitions as nops + * Pull the _spin_*()/_read_*()/_write_*() functions/declarations: */ -#define spin_lock_init(lock) do { (void)(lock); } while(0) -#define _raw_spin_lock(lock) do { (void)(lock); } while(0) -#define spin_is_locked(lock) ((void)(lock), 0) -#define assert_spin_locked(lock) do { (void)(lock); } while(0) -#define _raw_spin_trylock(lock) (((void)(lock), 1)) -#define spin_unlock_wait(lock) (void)(lock) -#define _raw_spin_unlock(lock) do { (void)(lock); } while(0) -#endif /* CONFIG_DEBUG_SPINLOCK */ - -/* RW spinlocks: No debug version */ - -#if (__GNUC__ > 2) - typedef struct { } rwlock_t; - #define RW_LOCK_UNLOCKED (rwlock_t) { } +#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) +# include #else - typedef struct { int gcc_is_buggy; } rwlock_t; - #define RW_LOCK_UNLOCKED (rwlock_t) { 0 } +# include #endif -#define rwlock_init(lock) do { (void)(lock); } while(0) -#define _raw_read_lock(lock) do { (void)(lock); } while(0) -#define _raw_read_unlock(lock) do { (void)(lock); } while(0) -#define _raw_write_lock(lock) do { (void)(lock); } while(0) -#define _raw_write_unlock(lock) do { (void)(lock); } while(0) -#define read_can_lock(lock) (((void)(lock), 1)) -#define write_can_lock(lock) (((void)(lock), 1)) -#define _raw_read_trylock(lock) ({ (void)(lock); (1); }) -#define _raw_write_trylock(lock) ({ (void)(lock); (1); }) - -#define _spin_trylock(lock) ({preempt_disable(); _raw_spin_trylock(lock) ? \ - 1 : ({preempt_enable(); 0;});}) - -#define _read_trylock(lock) ({preempt_disable();_raw_read_trylock(lock) ? \ - 1 : ({preempt_enable(); 0;});}) - -#define _write_trylock(lock) ({preempt_disable(); _raw_write_trylock(lock) ? \ - 1 : ({preempt_enable(); 0;});}) - -#define _spin_trylock_bh(lock) ({preempt_disable(); local_bh_disable(); \ - _raw_spin_trylock(lock) ? \ - 1 : ({preempt_enable_no_resched(); local_bh_enable(); 0;});}) - -#define _spin_lock(lock) \ -do { \ - preempt_disable(); \ - _raw_spin_lock(lock); \ - __acquire(lock); \ -} while(0) - -#define _write_lock(lock) \ -do { \ - preempt_disable(); \ - _raw_write_lock(lock); \ - __acquire(lock); \ -} while(0) - -#define _read_lock(lock) \ -do { \ - preempt_disable(); \ - _raw_read_lock(lock); \ - __acquire(lock); \ -} while(0) - -#define _spin_unlock(lock) \ -do { \ - _raw_spin_unlock(lock); \ - preempt_enable(); \ - __release(lock); \ -} while (0) - -#define _write_unlock(lock) \ -do { \ - _raw_write_unlock(lock); \ - preempt_enable(); \ - __release(lock); \ -} while(0) - -#define _read_unlock(lock) \ -do { \ - _raw_read_unlock(lock); \ - preempt_enable(); \ - __release(lock); \ -} while(0) - -#define _spin_lock_irqsave(lock, flags) \ -do { \ - local_irq_save(flags); \ - preempt_disable(); \ - _raw_spin_lock(lock); \ - __acquire(lock); \ -} while (0) - -#define _spin_lock_irq(lock) \ -do { \ - local_irq_disable(); \ - preempt_disable(); \ - _raw_spin_lock(lock); \ - __acquire(lock); \ -} while (0) - -#define _spin_lock_bh(lock) \ -do { \ - local_bh_disable(); \ - preempt_disable(); \ - _raw_spin_lock(lock); \ - __acquire(lock); \ -} while (0) - -#define _read_lock_irqsave(lock, flags) \ -do { \ - local_irq_save(flags); \ - preempt_disable(); \ - _raw_read_lock(lock); \ - __acquire(lock); \ -} while (0) - -#define _read_lock_irq(lock) \ -do { \ - local_irq_disable(); \ - preempt_disable(); \ - _raw_read_lock(lock); \ - __acquire(lock); \ -} while (0) - -#define _read_lock_bh(lock) \ -do { \ - local_bh_disable(); \ - preempt_disable(); \ - _raw_read_lock(lock); \ - __acquire(lock); \ -} while (0) - -#define _write_lock_irqsave(lock, flags) \ -do { \ - local_irq_save(flags); \ - preempt_disable(); \ - _raw_write_lock(lock); \ - __acquire(lock); \ -} while (0) +#ifdef CONFIG_DEBUG_SPINLOCK + extern void _raw_spin_lock(spinlock_t *lock); +#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock) + extern int _raw_spin_trylock(spinlock_t *lock); + extern void _raw_spin_unlock(spinlock_t *lock); + + extern void _raw_read_lock(rwlock_t *lock); + extern int _raw_read_trylock(rwlock_t *lock); + extern void _raw_read_unlock(rwlock_t *lock); + extern void _raw_write_lock(rwlock_t *lock); + extern int _raw_write_trylock(rwlock_t *lock); + extern void _raw_write_unlock(rwlock_t *lock); +#else +# define _raw_spin_unlock(lock) __raw_spin_unlock(&(lock)->raw_lock) +# define _raw_spin_trylock(lock) __raw_spin_trylock(&(lock)->raw_lock) +# define _raw_spin_lock(lock) __raw_spin_lock(&(lock)->raw_lock) +# define _raw_spin_lock_flags(lock, flags) \ + __raw_spin_lock_flags(&(lock)->raw_lock, *(flags)) +# define _raw_read_lock(rwlock) __raw_read_lock(&(rwlock)->raw_lock) +# define _raw_write_lock(rwlock) __raw_write_lock(&(rwlock)->raw_lock) +# define _raw_read_unlock(rwlock) __raw_read_unlock(&(rwlock)->raw_lock) +# define _raw_write_unlock(rwlock) __raw_write_unlock(&(rwlock)->raw_lock) +# define _raw_read_trylock(rwlock) __raw_read_trylock(&(rwlock)->raw_lock) +# define _raw_write_trylock(rwlock) __raw_write_trylock(&(rwlock)->raw_lock) +#endif -#define _write_lock_irq(lock) \ -do { \ - local_irq_disable(); \ - preempt_disable(); \ - _raw_write_lock(lock); \ - __acquire(lock); \ -} while (0) - -#define _write_lock_bh(lock) \ -do { \ - local_bh_disable(); \ - preempt_disable(); \ - _raw_write_lock(lock); \ - __acquire(lock); \ -} while (0) - -#define _spin_unlock_irqrestore(lock, flags) \ -do { \ - _raw_spin_unlock(lock); \ - local_irq_restore(flags); \ - preempt_enable(); \ - __release(lock); \ -} while (0) - -#define _spin_unlock_irq(lock) \ -do { \ - _raw_spin_unlock(lock); \ - local_irq_enable(); \ - preempt_enable(); \ - __release(lock); \ -} while (0) - -#define _spin_unlock_bh(lock) \ -do { \ - _raw_spin_unlock(lock); \ - preempt_enable_no_resched(); \ - local_bh_enable(); \ - __release(lock); \ -} while (0) - -#define _write_unlock_bh(lock) \ -do { \ - _raw_write_unlock(lock); \ - preempt_enable_no_resched(); \ - local_bh_enable(); \ - __release(lock); \ -} while (0) - -#define _read_unlock_irqrestore(lock, flags) \ -do { \ - _raw_read_unlock(lock); \ - local_irq_restore(flags); \ - preempt_enable(); \ - __release(lock); \ -} while (0) - -#define _write_unlock_irqrestore(lock, flags) \ -do { \ - _raw_write_unlock(lock); \ - local_irq_restore(flags); \ - preempt_enable(); \ - __release(lock); \ -} while (0) - -#define _read_unlock_irq(lock) \ -do { \ - _raw_read_unlock(lock); \ - local_irq_enable(); \ - preempt_enable(); \ - __release(lock); \ -} while (0) - -#define _read_unlock_bh(lock) \ -do { \ - _raw_read_unlock(lock); \ - preempt_enable_no_resched(); \ - local_bh_enable(); \ - __release(lock); \ -} while (0) - -#define _write_unlock_irq(lock) \ -do { \ - _raw_write_unlock(lock); \ - local_irq_enable(); \ - preempt_enable(); \ - __release(lock); \ -} while (0) - -#endif /* !SMP */ +#define read_can_lock(rwlock) __raw_read_can_lock(&(rwlock)->raw_lock) +#define write_can_lock(rwlock) __raw_write_can_lock(&(rwlock)->raw_lock) /* * Define the various spin_lock and rw_lock methods. Note we define these * regardless of whether CONFIG_SMP or CONFIG_PREEMPT are set. The various * methods are defined as nops in the case they are not required. */ -#define spin_trylock(lock) __cond_lock(_spin_trylock(lock)) -#define read_trylock(lock) __cond_lock(_read_trylock(lock)) -#define write_trylock(lock) __cond_lock(_write_trylock(lock)) +#define spin_trylock(lock) __cond_lock(_spin_trylock(lock)) +#define read_trylock(lock) __cond_lock(_read_trylock(lock)) +#define write_trylock(lock) __cond_lock(_write_trylock(lock)) -#define spin_lock(lock) _spin_lock(lock) -#define write_lock(lock) _write_lock(lock) -#define read_lock(lock) _read_lock(lock) +#define spin_lock(lock) _spin_lock(lock) +#define write_lock(lock) _write_lock(lock) +#define read_lock(lock) _read_lock(lock) -#ifdef CONFIG_SMP +#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) #define spin_lock_irqsave(lock, flags) flags = _spin_lock_irqsave(lock) #define read_lock_irqsave(lock, flags) flags = _read_lock_irqsave(lock) #define write_lock_irqsave(lock, flags) flags = _write_lock_irqsave(lock) @@ -470,137 +171,59 @@ do { \ #define write_lock_irq(lock) _write_lock_irq(lock) #define write_lock_bh(lock) _write_lock_bh(lock) -#define spin_unlock(lock) _spin_unlock(lock) -#define write_unlock(lock) _write_unlock(lock) -#define read_unlock(lock) _read_unlock(lock) +#define spin_unlock(lock) _spin_unlock(lock) +#define write_unlock(lock) _write_unlock(lock) +#define read_unlock(lock) _read_unlock(lock) -#define spin_unlock_irqrestore(lock, flags) _spin_unlock_irqrestore(lock, flags) +#define spin_unlock_irqrestore(lock, flags) \ + _spin_unlock_irqrestore(lock, flags) #define spin_unlock_irq(lock) _spin_unlock_irq(lock) #define spin_unlock_bh(lock) _spin_unlock_bh(lock) -#define read_unlock_irqrestore(lock, flags) _read_unlock_irqrestore(lock, flags) -#define read_unlock_irq(lock) _read_unlock_irq(lock) -#define read_unlock_bh(lock) _read_unlock_bh(lock) +#define read_unlock_irqrestore(lock, flags) \ + _read_unlock_irqrestore(lock, flags) +#define read_unlock_irq(lock) _read_unlock_irq(lock) +#define read_unlock_bh(lock) _read_unlock_bh(lock) -#define write_unlock_irqrestore(lock, flags) _write_unlock_irqrestore(lock, flags) -#define write_unlock_irq(lock) _write_unlock_irq(lock) -#define write_unlock_bh(lock) _write_unlock_bh(lock) +#define write_unlock_irqrestore(lock, flags) \ + _write_unlock_irqrestore(lock, flags) +#define write_unlock_irq(lock) _write_unlock_irq(lock) +#define write_unlock_bh(lock) _write_unlock_bh(lock) -#define spin_trylock_bh(lock) __cond_lock(_spin_trylock_bh(lock)) +#define spin_trylock_bh(lock) __cond_lock(_spin_trylock_bh(lock)) #define spin_trylock_irq(lock) \ ({ \ local_irq_disable(); \ _spin_trylock(lock) ? \ - 1 : ({local_irq_enable(); 0; }); \ + 1 : ({ local_irq_enable(); 0; }); \ }) #define spin_trylock_irqsave(lock, flags) \ ({ \ local_irq_save(flags); \ _spin_trylock(lock) ? \ - 1 : ({local_irq_restore(flags); 0;}); \ + 1 : ({ local_irq_restore(flags); 0; }); \ }) -#ifdef CONFIG_LOCKMETER -extern void _metered_spin_lock (spinlock_t *lock); -extern void _metered_spin_unlock (spinlock_t *lock); -extern int _metered_spin_trylock(spinlock_t *lock); -extern void _metered_read_lock (rwlock_t *lock); -extern void _metered_read_unlock (rwlock_t *lock); -extern void _metered_write_lock (rwlock_t *lock); -extern void _metered_write_unlock (rwlock_t *lock); -extern int _metered_read_trylock (rwlock_t *lock); -extern int _metered_write_trylock(rwlock_t *lock); -#endif - -/* "lock on reference count zero" */ -#ifndef ATOMIC_DEC_AND_LOCK -#include -extern int _atomic_dec_and_lock(atomic_t *atomic, spinlock_t *lock); -#endif - -#define atomic_dec_and_lock(atomic,lock) __cond_lock(_atomic_dec_and_lock(atomic,lock)) - -/* - * bit-based spin_lock() - * - * Don't use this unless you really need to: spin_lock() and spin_unlock() - * are significantly faster. - */ -static inline void bit_spin_lock(int bitnum, unsigned long *addr) -{ - /* - * Assuming the lock is uncontended, this never enters - * the body of the outer loop. If it is contended, then - * within the inner loop a non-atomic test is used to - * busywait with less bus contention for a good time to - * attempt to acquire the lock bit. - */ - preempt_disable(); -#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) - while (test_and_set_bit(bitnum, addr)) { - while (test_bit(bitnum, addr)) { - preempt_enable(); - cpu_relax(); - preempt_disable(); - } - } -#endif - __acquire(bitlock); -} - /* - * Return true if it was acquired + * Pull the atomic_t declaration: + * (asm-mips/atomic.h needs above definitions) */ -static inline int bit_spin_trylock(int bitnum, unsigned long *addr) -{ - preempt_disable(); -#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) - if (test_and_set_bit(bitnum, addr)) { - preempt_enable(); - return 0; - } -#endif - __acquire(bitlock); - return 1; -} - -/* - * bit-based spin_unlock() - */ -static inline void bit_spin_unlock(int bitnum, unsigned long *addr) -{ -#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) - BUG_ON(!test_bit(bitnum, addr)); - smp_mb__before_clear_bit(); - clear_bit(bitnum, addr); -#endif - preempt_enable(); - __release(bitlock); -} - -/* - * Return true if the lock is held. +#include +/** + * atomic_dec_and_lock - lock on reaching reference count zero + * @atomic: the atomic counter + * @lock: the spinlock in question */ -static inline int bit_spin_is_locked(int bitnum, unsigned long *addr) -{ -#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) - return test_bit(bitnum, addr); -#elif defined CONFIG_PREEMPT - return preempt_count(); -#else - return 1; -#endif -} - -#define DEFINE_SPINLOCK(x) spinlock_t x = SPIN_LOCK_UNLOCKED -#define DEFINE_RWLOCK(x) rwlock_t x = RW_LOCK_UNLOCKED +extern int _atomic_dec_and_lock(atomic_t *atomic, spinlock_t *lock); +#define atomic_dec_and_lock(atomic, lock) \ + __cond_lock(_atomic_dec_and_lock(atomic, lock)) /** * spin_can_lock - would spin_trylock() succeed? * @lock: the spinlock in question. */ -#define spin_can_lock(lock) (!spin_is_locked(lock)) +#define spin_can_lock(lock) (!spin_is_locked(lock)) #endif /* __LINUX_SPINLOCK_H */ diff --git a/include/linux/spinlock_api_smp.h b/include/linux/spinlock_api_smp.h new file mode 100644 index 000000000000..78e6989ffb54 --- /dev/null +++ b/include/linux/spinlock_api_smp.h @@ -0,0 +1,57 @@ +#ifndef __LINUX_SPINLOCK_API_SMP_H +#define __LINUX_SPINLOCK_API_SMP_H + +#ifndef __LINUX_SPINLOCK_H +# error "please don't include this file directly" +#endif + +/* + * include/linux/spinlock_api_smp.h + * + * spinlock API declarations on SMP (and debug) + * (implemented in kernel/spinlock.c) + * + * portions Copyright 2005, Red Hat, Inc., Ingo Molnar + * Released under the General Public License (GPL). + */ + +int in_lock_functions(unsigned long addr); + +#define assert_spin_locked(x) BUG_ON(!spin_is_locked(x)) + +void __lockfunc _spin_lock(spinlock_t *lock) __acquires(spinlock_t); +void __lockfunc _read_lock(rwlock_t *lock) __acquires(rwlock_t); +void __lockfunc _write_lock(rwlock_t *lock) __acquires(rwlock_t); +void __lockfunc _spin_lock_bh(spinlock_t *lock) __acquires(spinlock_t); +void __lockfunc _read_lock_bh(rwlock_t *lock) __acquires(rwlock_t); +void __lockfunc _write_lock_bh(rwlock_t *lock) __acquires(rwlock_t); +void __lockfunc _spin_lock_irq(spinlock_t *lock) __acquires(spinlock_t); +void __lockfunc _read_lock_irq(rwlock_t *lock) __acquires(rwlock_t); +void __lockfunc _write_lock_irq(rwlock_t *lock) __acquires(rwlock_t); +unsigned long __lockfunc _spin_lock_irqsave(spinlock_t *lock) + __acquires(spinlock_t); +unsigned long __lockfunc _read_lock_irqsave(rwlock_t *lock) + __acquires(rwlock_t); +unsigned long __lockfunc _write_lock_irqsave(rwlock_t *lock) + __acquires(rwlock_t); +int __lockfunc _spin_trylock(spinlock_t *lock); +int __lockfunc _read_trylock(rwlock_t *lock); +int __lockfunc _write_trylock(rwlock_t *lock); +int __lockfunc _spin_trylock_bh(spinlock_t *lock); +void __lockfunc _spin_unlock(spinlock_t *lock) __releases(spinlock_t); +void __lockfunc _read_unlock(rwlock_t *lock) __releases(rwlock_t); +void __lockfunc _write_unlock(rwlock_t *lock) __releases(rwlock_t); +void __lockfunc _spin_unlock_bh(spinlock_t *lock) __releases(spinlock_t); +void __lockfunc _read_unlock_bh(rwlock_t *lock) __releases(rwlock_t); +void __lockfunc _write_unlock_bh(rwlock_t *lock) __releases(rwlock_t); +void __lockfunc _spin_unlock_irq(spinlock_t *lock) __releases(spinlock_t); +void __lockfunc _read_unlock_irq(rwlock_t *lock) __releases(rwlock_t); +void __lockfunc _write_unlock_irq(rwlock_t *lock) __releases(rwlock_t); +void __lockfunc _spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags) + __releases(spinlock_t); +void __lockfunc _read_unlock_irqrestore(rwlock_t *lock, unsigned long flags) + __releases(rwlock_t); +void __lockfunc _write_unlock_irqrestore(rwlock_t *lock, unsigned long flags) + __releases(rwlock_t); + +#endif /* __LINUX_SPINLOCK_API_SMP_H */ diff --git a/include/linux/spinlock_api_up.h b/include/linux/spinlock_api_up.h new file mode 100644 index 000000000000..cd81cee566f4 --- /dev/null +++ b/include/linux/spinlock_api_up.h @@ -0,0 +1,80 @@ +#ifndef __LINUX_SPINLOCK_API_UP_H +#define __LINUX_SPINLOCK_API_UP_H + +#ifndef __LINUX_SPINLOCK_H +# error "please don't include this file directly" +#endif + +/* + * include/linux/spinlock_api_up.h + * + * spinlock API implementation on UP-nondebug (inlined implementation) + * + * portions Copyright 2005, Red Hat, Inc., Ingo Molnar + * Released under the General Public License (GPL). + */ + +#define in_lock_functions(ADDR) 0 + +#define assert_spin_locked(lock) do { (void)(lock); } while (0) + +/* + * In the UP-nondebug case there's no real locking going on, so the + * only thing we have to do is to keep the preempt counts and irq + * flags straight, to supress compiler warnings of unused lock + * variables, and to add the proper checker annotations: + */ +#define __LOCK(lock) \ + do { preempt_disable(); __acquire(lock); (void)(lock); } while (0) + +#define __LOCK_BH(lock) \ + do { local_bh_disable(); __LOCK(lock); } while (0) + +#define __LOCK_IRQ(lock) \ + do { local_irq_disable(); __LOCK(lock); } while (0) + +#define __LOCK_IRQSAVE(lock, flags) \ + do { local_irq_save(flags); __LOCK(lock); } while (0) + +#define __UNLOCK(lock) \ + do { preempt_enable(); __release(lock); (void)(lock); } while (0) + +#define __UNLOCK_BH(lock) \ + do { preempt_enable_no_resched(); local_bh_enable(); __release(lock); (void)(lock); } while (0) + +#define __UNLOCK_IRQ(lock) \ + do { local_irq_enable(); __UNLOCK(lock); } while (0) + +#define __UNLOCK_IRQRESTORE(lock, flags) \ + do { local_irq_restore(flags); __UNLOCK(lock); } while (0) + +#define _spin_lock(lock) __LOCK(lock) +#define _read_lock(lock) __LOCK(lock) +#define _write_lock(lock) __LOCK(lock) +#define _spin_lock_bh(lock) __LOCK_BH(lock) +#define _read_lock_bh(lock) __LOCK_BH(lock) +#define _write_lock_bh(lock) __LOCK_BH(lock) +#define _spin_lock_irq(lock) __LOCK_IRQ(lock) +#define _read_lock_irq(lock) __LOCK_IRQ(lock) +#define _write_lock_irq(lock) __LOCK_IRQ(lock) +#define _spin_lock_irqsave(lock, flags) __LOCK_IRQSAVE(lock, flags) +#define _read_lock_irqsave(lock, flags) __LOCK_IRQSAVE(lock, flags) +#define _write_lock_irqsave(lock, flags) __LOCK_IRQSAVE(lock, flags) +#define _spin_trylock(lock) ({ __LOCK(lock); 1; }) +#define _read_trylock(lock) ({ __LOCK(lock); 1; }) +#define _write_trylock(lock) ({ __LOCK(lock); 1; }) +#define _spin_trylock_bh(lock) ({ __LOCK_BH(lock); 1; }) +#define _spin_unlock(lock) __UNLOCK(lock) +#define _read_unlock(lock) __UNLOCK(lock) +#define _write_unlock(lock) __UNLOCK(lock) +#define _spin_unlock_bh(lock) __UNLOCK_BH(lock) +#define _write_unlock_bh(lock) __UNLOCK_BH(lock) +#define _read_unlock_bh(lock) __UNLOCK_BH(lock) +#define _spin_unlock_irq(lock) __UNLOCK_IRQ(lock) +#define _read_unlock_irq(lock) __UNLOCK_IRQ(lock) +#define _write_unlock_irq(lock) __UNLOCK_IRQ(lock) +#define _spin_unlock_irqrestore(lock, flags) __UNLOCK_IRQRESTORE(lock, flags) +#define _read_unlock_irqrestore(lock, flags) __UNLOCK_IRQRESTORE(lock, flags) +#define _write_unlock_irqrestore(lock, flags) __UNLOCK_IRQRESTORE(lock, flags) + +#endif /* __LINUX_SPINLOCK_API_UP_H */ diff --git a/include/linux/spinlock_types.h b/include/linux/spinlock_types.h new file mode 100644 index 000000000000..9cb51e070390 --- /dev/null +++ b/include/linux/spinlock_types.h @@ -0,0 +1,67 @@ +#ifndef __LINUX_SPINLOCK_TYPES_H +#define __LINUX_SPINLOCK_TYPES_H + +/* + * include/linux/spinlock_types.h - generic spinlock type definitions + * and initializers + * + * portions Copyright 2005, Red Hat, Inc., Ingo Molnar + * Released under the General Public License (GPL). + */ + +#if defined(CONFIG_SMP) +# include +#else +# include +#endif + +typedef struct { + raw_spinlock_t raw_lock; +#if defined(CONFIG_PREEMPT) && defined(CONFIG_SMP) + unsigned int break_lock; +#endif +#ifdef CONFIG_DEBUG_SPINLOCK + unsigned int magic, owner_cpu; + void *owner; +#endif +} spinlock_t; + +#define SPINLOCK_MAGIC 0xdead4ead + +typedef struct { + raw_rwlock_t raw_lock; +#if defined(CONFIG_PREEMPT) && defined(CONFIG_SMP) + unsigned int break_lock; +#endif +#ifdef CONFIG_DEBUG_SPINLOCK + unsigned int magic, owner_cpu; + void *owner; +#endif +} rwlock_t; + +#define RWLOCK_MAGIC 0xdeaf1eed + +#define SPINLOCK_OWNER_INIT ((void *)-1L) + +#ifdef CONFIG_DEBUG_SPINLOCK +# define SPIN_LOCK_UNLOCKED \ + (spinlock_t) { .raw_lock = __RAW_SPIN_LOCK_UNLOCKED, \ + .magic = SPINLOCK_MAGIC, \ + .owner = SPINLOCK_OWNER_INIT, \ + .owner_cpu = -1 } +#define RW_LOCK_UNLOCKED \ + (rwlock_t) { .raw_lock = __RAW_RW_LOCK_UNLOCKED, \ + .magic = RWLOCK_MAGIC, \ + .owner = SPINLOCK_OWNER_INIT, \ + .owner_cpu = -1 } +#else +# define SPIN_LOCK_UNLOCKED \ + (spinlock_t) { .raw_lock = __RAW_SPIN_LOCK_UNLOCKED } +#define RW_LOCK_UNLOCKED \ + (rwlock_t) { .raw_lock = __RAW_RW_LOCK_UNLOCKED } +#endif + +#define DEFINE_SPINLOCK(x) spinlock_t x = SPIN_LOCK_UNLOCKED +#define DEFINE_RWLOCK(x) rwlock_t x = RW_LOCK_UNLOCKED + +#endif /* __LINUX_SPINLOCK_TYPES_H */ diff --git a/include/linux/spinlock_types_up.h b/include/linux/spinlock_types_up.h new file mode 100644 index 000000000000..def2d173a8db --- /dev/null +++ b/include/linux/spinlock_types_up.h @@ -0,0 +1,51 @@ +#ifndef __LINUX_SPINLOCK_TYPES_UP_H +#define __LINUX_SPINLOCK_TYPES_UP_H + +#ifndef __LINUX_SPINLOCK_TYPES_H +# error "please don't include this file directly" +#endif + +/* + * include/linux/spinlock_types_up.h - spinlock type definitions for UP + * + * portions Copyright 2005, Red Hat, Inc., Ingo Molnar + * Released under the General Public License (GPL). + */ + +#ifdef CONFIG_DEBUG_SPINLOCK + +typedef struct { + volatile unsigned int slock; +} raw_spinlock_t; + +#define __RAW_SPIN_LOCK_UNLOCKED { 1 } + +#else + +/* + * All gcc 2.95 versions and early versions of 2.96 have a nasty bug + * with empty initializers. + */ +#if (__GNUC__ > 2) +typedef struct { } raw_spinlock_t; + +#define __RAW_SPIN_LOCK_UNLOCKED { } +#else +typedef struct { int gcc_is_buggy; } raw_spinlock_t; +#define __RAW_SPIN_LOCK_UNLOCKED (raw_spinlock_t) { 0 } +#endif + +#endif + +#if (__GNUC__ > 2) +typedef struct { + /* no debug version on UP */ +} raw_rwlock_t; + +#define __RAW_RW_LOCK_UNLOCKED { } +#else +typedef struct { int gcc_is_buggy; } raw_rwlock_t; +#define __RAW_RW_LOCK_UNLOCKED (raw_rwlock_t) { 0 } +#endif + +#endif /* __LINUX_SPINLOCK_TYPES_UP_H */ diff --git a/include/linux/spinlock_up.h b/include/linux/spinlock_up.h new file mode 100644 index 000000000000..31accf2f0b13 --- /dev/null +++ b/include/linux/spinlock_up.h @@ -0,0 +1,74 @@ +#ifndef __LINUX_SPINLOCK_UP_H +#define __LINUX_SPINLOCK_UP_H + +#ifndef __LINUX_SPINLOCK_H +# error "please don't include this file directly" +#endif + +/* + * include/linux/spinlock_up.h - UP-debug version of spinlocks. + * + * portions Copyright 2005, Red Hat, Inc., Ingo Molnar + * Released under the General Public License (GPL). + * + * In the debug case, 1 means unlocked, 0 means locked. (the values + * are inverted, to catch initialization bugs) + * + * No atomicity anywhere, we are on UP. + */ + +#ifdef CONFIG_DEBUG_SPINLOCK + +#define __raw_spin_is_locked(x) ((x)->slock == 0) + +static inline void __raw_spin_lock(raw_spinlock_t *lock) +{ + lock->slock = 0; +} + +static inline void +__raw_spin_lock_flags(raw_spinlock_t *lock, unsigned long flags) +{ + local_irq_save(flags); + lock->slock = 0; +} + +static inline int __raw_spin_trylock(raw_spinlock_t *lock) +{ + char oldval = lock->slock; + + lock->slock = 0; + + return oldval > 0; +} + +static inline void __raw_spin_unlock(raw_spinlock_t *lock) +{ + lock->slock = 1; +} + +/* + * Read-write spinlocks. No debug version. + */ +#define __raw_read_lock(lock) do { (void)(lock); } while (0) +#define __raw_write_lock(lock) do { (void)(lock); } while (0) +#define __raw_read_trylock(lock) ({ (void)(lock); 1; }) +#define __raw_write_trylock(lock) ({ (void)(lock); 1; }) +#define __raw_read_unlock(lock) do { (void)(lock); } while (0) +#define __raw_write_unlock(lock) do { (void)(lock); } while (0) + +#else /* DEBUG_SPINLOCK */ +#define __raw_spin_is_locked(lock) ((void)(lock), 0) +/* for sched.c and kernel_lock.c: */ +# define __raw_spin_lock(lock) do { (void)(lock); } while (0) +# define __raw_spin_unlock(lock) do { (void)(lock); } while (0) +# define __raw_spin_trylock(lock) ({ (void)(lock); 1; }) +#endif /* DEBUG_SPINLOCK */ + +#define __raw_read_can_lock(lock) (((void)(lock), 1)) +#define __raw_write_can_lock(lock) (((void)(lock), 1)) + +#define __raw_spin_unlock_wait(lock) \ + do { cpu_relax(); } while (__raw_spin_is_locked(lock)) + +#endif /* __LINUX_SPINLOCK_UP_H */ -- cgit v1.2.3 From 4247bdc60048018b98f71228b45cfbc5f5270c86 Mon Sep 17 00:00:00 2001 From: Paul Jackson Date: Sat, 10 Sep 2005 00:26:06 -0700 Subject: [PATCH] cpuset semaphore depth check deadlock fix The cpusets-formalize-intermediate-gfp_kernel-containment patch has a deadlock problem. This patch was part of a set of four patches to make more extensive use of the cpuset 'mem_exclusive' attribute to manage kernel GFP_KERNEL memory allocations and to constrain the out-of-memory (oom) killer. A task that is changing cpusets in particular ways on a system when it is very short of free memory could double trip over the global cpuset_sem semaphore (get the lock and then deadlock trying to get it again). The second attempt to get cpuset_sem would be in the routine cpuset_zone_allowed(). This was discovered by code inspection. I can not reproduce the problem except with an artifically hacked kernel and a specialized stress test. In real life you cannot hit this unless you are manipulating cpusets, and are very unlikely to hit it unless you are rapidly modifying cpusets on a memory tight system. Even then it would be a rare occurence. If you did hit it, the task double tripping over cpuset_sem would deadlock in the kernel, and any other task also trying to manipulate cpusets would deadlock there too, on cpuset_sem. Your batch manager would be wedged solid (if it was cpuset savvy), but classic Unix shells and utilities would work well enough to reboot the system. The unusual condition that led to this bug is that unlike most semaphores, cpuset_sem _can_ be acquired while in the page allocation code, when __alloc_pages() calls cpuset_zone_allowed. So it easy to mistakenly perform the following sequence: 1) task makes system call to alter a cpuset 2) take cpuset_sem 3) try to allocate memory 4) memory allocator, via cpuset_zone_allowed, trys to take cpuset_sem 5) deadlock The reason that this is not a serious bug for most users is that almost all calls to allocate memory don't require taking cpuset_sem. Only some code paths off the beaten track require taking cpuset_sem -- which is good. Taking a global semaphore on the main code path for allocating memory would not scale well. This patch fixes this deadlock by wrapping the up() and down() calls on cpuset_sem in kernel/cpuset.c with code that tracks the nesting depth of the current task on that semaphore, and only does the real down() if the task doesn't hold the lock already, and only does the real up() if the nesting depth (number of unmatched downs) is exactly one. The previous required use of refresh_mems(), anytime that the cpuset_sem semaphore was acquired and the code executed while holding that semaphore might try to allocate memory, is no longer required. Two refresh_mems() calls were removed thanks to this. This is a good change, as failing to get all the necessary refresh_mems() calls placed was a primary source of bugs in this cpuset code. The only remaining call to refresh_mems() is made while doing a memory allocation, if certain task memory placement data needs to be updated from its cpuset, due to the cpuset having been changed behind the tasks back. Signed-off-by: Paul Jackson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sched.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/sched.h b/include/linux/sched.h index c551e6a1447e..8a1fcfe80fc7 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -782,6 +782,7 @@ struct task_struct { short il_next; #endif #ifdef CONFIG_CPUSETS + short cpuset_sem_nest_depth; struct cpuset *cpuset; nodemask_t mems_allowed; int cpuset_mems_generation; -- cgit v1.2.3 From d79fc0fc6645b0cf5cd980da76942ca6d6300fa4 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Sat, 10 Sep 2005 00:26:12 -0700 Subject: [PATCH] sched: TASK_NONINTERACTIVE This patch implements a task state bit (TASK_NONINTERACTIVE), which can be used by blocking points to mark the task's wait as "non-interactive". This does not mean the task will be considered a CPU-hog - the wait will simply not have an effect on the waiting task's priority - positive or negative alike. Right now only pipe_wait() will make use of it, because it's a common source of not-so-interactive waits (kernel compilation jobs, etc.). Signed-off-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sched.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/sched.h b/include/linux/sched.h index 8a1fcfe80fc7..ac70f845b5b1 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -114,6 +114,7 @@ extern unsigned long nr_iowait(void); #define TASK_TRACED 8 #define EXIT_ZOMBIE 16 #define EXIT_DEAD 32 +#define TASK_NONINTERACTIVE 64 #define __set_task_state(tsk, state_value) \ do { (tsk)->state = (state_value); } while (0) -- cgit v1.2.3 From 5ce7852cdf07ab903fb1c72d0915ac492c6e07c7 Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Sat, 10 Sep 2005 00:26:28 -0700 Subject: [PATCH] mm/filemap.c: make two functions static With Nick Piggin Give some things static scope. Signed-off-by: Adrian Bunk Signed-off-by: Nick Piggin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fs.h | 2 -- include/linux/writeback.h | 2 -- 2 files changed, 4 deletions(-) (limited to 'include') diff --git a/include/linux/fs.h b/include/linux/fs.h index 7f61227827d7..e0b77c5af9a0 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1509,8 +1509,6 @@ extern void do_generic_mapping_read(struct address_space *mapping, loff_t *, read_descriptor_t *, read_actor_t); extern void file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping); -extern ssize_t generic_file_direct_IO(int rw, struct kiocb *iocb, - const struct iovec *iov, loff_t offset, unsigned long nr_segs); extern ssize_t generic_file_readv(struct file *filp, const struct iovec *iov, unsigned long nr_segs, loff_t *ppos); ssize_t generic_file_writev(struct file *filp, const struct iovec *iov, diff --git a/include/linux/writeback.h b/include/linux/writeback.h index 542dbaee6512..343d883d69c5 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -109,8 +109,6 @@ int pdflush_operation(void (*fn)(unsigned long), unsigned long arg0); int do_writepages(struct address_space *mapping, struct writeback_control *wbc); int sync_page_range(struct inode *inode, struct address_space *mapping, loff_t pos, size_t count); -int sync_page_range_nolock(struct inode *inode, struct address_space - *mapping, loff_t pos, size_t count); /* pdflush.c */ extern int nr_pdflush_threads; /* Global so it can be exported to sysctl -- cgit v1.2.3 From b2d550736f8b2186b8ef7e206d0bfbfec2238ae8 Mon Sep 17 00:00:00 2001 From: Victor Fusco Date: Sat, 10 Sep 2005 00:26:36 -0700 Subject: [PATCH] mm/slab: fix sparse warnings Fix the sparse warning "implicit cast to nocast type" Signed-off-by: Victor Fusco Signed-off-by: Domen Puncer Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/slab.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/slab.h b/include/linux/slab.h index 42a6bea58af3..1f356f3bbc64 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -118,7 +118,8 @@ extern void kfree(const void *); extern unsigned int ksize(const void *); #ifdef CONFIG_NUMA -extern void *kmem_cache_alloc_node(kmem_cache_t *, int flags, int node); +extern void *kmem_cache_alloc_node(kmem_cache_t *, + unsigned int __nocast flags, int node); extern void *kmalloc_node(size_t size, unsigned int __nocast flags, int node); #else static inline void *kmem_cache_alloc_node(kmem_cache_t *cachep, int flags, int node) -- cgit v1.2.3 From 00b61f51922e432fd92a482ba1e0b5f8f326ef46 Mon Sep 17 00:00:00 2001 From: Victor Fusco Date: Sat, 10 Sep 2005 00:26:48 -0700 Subject: [PATCH] lib/radix-tree: Fix "nocast type" warnings Fix the sparse warning "implicit cast to nocast type" Signed-off-by: Victor Fusco Signed-off-by: Domen Puncer Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/radix-tree.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h index 8081a281fa5e..9c51917b1cce 100644 --- a/include/linux/radix-tree.h +++ b/include/linux/radix-tree.h @@ -24,7 +24,7 @@ struct radix_tree_root { unsigned int height; - int gfp_mask; + unsigned int gfp_mask; struct radix_tree_node *rnode; }; @@ -50,7 +50,7 @@ void *radix_tree_delete(struct radix_tree_root *, unsigned long); unsigned int radix_tree_gang_lookup(struct radix_tree_root *root, void **results, unsigned long first_index, unsigned int max_items); -int radix_tree_preload(int gfp_mask); +int radix_tree_preload(unsigned int __nocast gfp_mask); void radix_tree_init(void); void *radix_tree_tag_set(struct radix_tree_root *root, unsigned long index, int tag); -- cgit v1.2.3 From 3a11ec5e502cb61ee31095008318f9c107d9db60 Mon Sep 17 00:00:00 2001 From: Victor Fusco Date: Sat, 10 Sep 2005 00:26:49 -0700 Subject: [PATCH] dmapool: Fix "nocast type" warnings Fix the sparse warning "implicit cast to nocast type" Signed-off-by: Victor Fusco Signed-off-by: Domen Puncer Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/dmapool.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/dmapool.h b/include/linux/dmapool.h index e60bfdac348d..4932ee5c77f0 100644 --- a/include/linux/dmapool.h +++ b/include/linux/dmapool.h @@ -19,7 +19,8 @@ struct dma_pool *dma_pool_create(const char *name, struct device *dev, void dma_pool_destroy(struct dma_pool *pool); -void *dma_pool_alloc(struct dma_pool *pool, int mem_flags, dma_addr_t *handle); +void *dma_pool_alloc(struct dma_pool *pool, unsigned int __nocast mem_flags, + dma_addr_t *handle); void dma_pool_free(struct dma_pool *pool, void *vaddr, dma_addr_t addr); -- cgit v1.2.3 From f8e38dde33b839bb9e9f98e88688bfac1811d57a Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Sat, 10 Sep 2005 00:26:55 -0700 Subject: [PATCH] include/asm-arm26/hardirq.h: remove #define irq_enter() This patch removes a #define for irq_enter that is superfluous due to a similar one in include/linux/hardirq.h. Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-arm26/hardirq.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include') diff --git a/include/asm-arm26/hardirq.h b/include/asm-arm26/hardirq.h index 791ee1da9bfa..dc28daab8aa8 100644 --- a/include/asm-arm26/hardirq.h +++ b/include/asm-arm26/hardirq.h @@ -22,8 +22,6 @@ typedef struct { # error HARDIRQ_BITS is too low! #endif -#define irq_enter() (preempt_count() += HARDIRQ_OFFSET) - #ifndef CONFIG_SMP extern asmlinkage void __do_softirq(void); -- cgit v1.2.3 From e2afe67453e5b1499459ee3596b1e7924a5208f5 Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Sat, 10 Sep 2005 00:27:16 -0700 Subject: [PATCH] include/asm-i386/: "extern inline" -> "static inline" "extern inline" doesn't make much sense. Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-i386/div64.h | 2 +- include/asm-i386/processor.h | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/asm-i386/div64.h b/include/asm-i386/div64.h index 28ed8b296afc..75c67c785bb8 100644 --- a/include/asm-i386/div64.h +++ b/include/asm-i386/div64.h @@ -35,7 +35,7 @@ */ #define div_long_long_rem(a,b,c) div_ll_X_l_rem(a,b,c) -extern inline long +static inline long div_ll_X_l_rem(long long divs, long div, long *rem) { long dum2; diff --git a/include/asm-i386/processor.h b/include/asm-i386/processor.h index 37bef8ed7bed..0a4ec764377c 100644 --- a/include/asm-i386/processor.h +++ b/include/asm-i386/processor.h @@ -679,7 +679,7 @@ static inline void rep_nop(void) However we don't do prefetches for pre XP Athlons currently That should be fixed. */ #define ARCH_HAS_PREFETCH -extern inline void prefetch(const void *x) +static inline void prefetch(const void *x) { alternative_input(ASM_NOP4, "prefetchnta (%1)", @@ -693,7 +693,7 @@ extern inline void prefetch(const void *x) /* 3dnow! prefetch to get an exclusive cache line. Useful for spinlocks to avoid one state transition in the cache coherency protocol. */ -extern inline void prefetchw(const void *x) +static inline void prefetchw(const void *x) { alternative_input(ASM_NOP4, "prefetchw (%1)", -- cgit v1.2.3 From 2befb9e36dc52d715c3a67a9dbad36ac1edc376f Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Sat, 10 Sep 2005 00:27:17 -0700 Subject: [PATCH] include/linux/blkdev.h: "extern inline" -> "static inline" "extern inline" doesn't make much sense. Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/blkdev.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index aefa26fbae8a..efdc9b5bc05c 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -728,7 +728,7 @@ static inline unsigned int blksize_bits(unsigned int size) return bits; } -extern inline unsigned int block_size(struct block_device *bdev) +static inline unsigned int block_size(struct block_device *bdev) { return bdev->bd_block_size; } -- cgit v1.2.3 From 9adeb1b409e832c31d93106ce52482a5f0078439 Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Sat, 10 Sep 2005 00:27:18 -0700 Subject: [PATCH] "extern inline" -> "static inline" "extern inline" doesn't make much sense. Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/reiserfs_fs.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/linux/reiserfs_fs.h b/include/linux/reiserfs_fs.h index 17e458e17e2b..af00b10294cd 100644 --- a/include/linux/reiserfs_fs.h +++ b/include/linux/reiserfs_fs.h @@ -2097,7 +2097,7 @@ void reiserfs_free_block(struct reiserfs_transaction_handle *th, struct inode *, b_blocknr_t, int for_unformatted); int reiserfs_allocate_blocknrs(reiserfs_blocknr_hint_t *, b_blocknr_t *, int, int); -extern inline int reiserfs_new_form_blocknrs(struct tree_balance *tb, +static inline int reiserfs_new_form_blocknrs(struct tree_balance *tb, b_blocknr_t * new_blocknrs, int amount_needed) { @@ -2113,7 +2113,7 @@ extern inline int reiserfs_new_form_blocknrs(struct tree_balance *tb, 0); } -extern inline int reiserfs_new_unf_blocknrs(struct reiserfs_transaction_handle +static inline int reiserfs_new_unf_blocknrs(struct reiserfs_transaction_handle *th, struct inode *inode, b_blocknr_t * new_blocknrs, struct path *path, long block) @@ -2130,7 +2130,7 @@ extern inline int reiserfs_new_unf_blocknrs(struct reiserfs_transaction_handle } #ifdef REISERFS_PREALLOCATE -extern inline int reiserfs_new_unf_blocknrs2(struct reiserfs_transaction_handle +static inline int reiserfs_new_unf_blocknrs2(struct reiserfs_transaction_handle *th, struct inode *inode, b_blocknr_t * new_blocknrs, struct path *path, long block) -- cgit v1.2.3 From c2d08dade7743bd3a28cc5f68163e71c00a2a908 Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Sat, 10 Sep 2005 00:27:18 -0700 Subject: [PATCH] include/linux/bio.h: "extern inline" -> "static inline" "extern inline" doesn't make much sense. Signed-off-by: Adrian Bunk Acked-by: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/bio.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'include') diff --git a/include/linux/bio.h b/include/linux/bio.h index cdaf03a14a51..6e1c79c8b6bf 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -314,9 +314,8 @@ void zero_fill_bio(struct bio *bio); * bvec_kmap_irq and bvec_kunmap_irq!! * * This function MUST be inlined - it plays with the CPU interrupt flags. - * Hence the `extern inline'. */ -extern inline char *bvec_kmap_irq(struct bio_vec *bvec, unsigned long *flags) +static inline char *bvec_kmap_irq(struct bio_vec *bvec, unsigned long *flags) { unsigned long addr; @@ -332,7 +331,7 @@ extern inline char *bvec_kmap_irq(struct bio_vec *bvec, unsigned long *flags) return (char *) addr + bvec->bv_offset; } -extern inline void bvec_kunmap_irq(char *buffer, unsigned long *flags) +static inline void bvec_kunmap_irq(char *buffer, unsigned long *flags) { unsigned long ptr = (unsigned long) buffer & PAGE_MASK; @@ -345,7 +344,7 @@ extern inline void bvec_kunmap_irq(char *buffer, unsigned long *flags) #define bvec_kunmap_irq(buf, flags) do { *(flags) = 0; } while (0) #endif -extern inline char *__bio_kmap_irq(struct bio *bio, unsigned short idx, +static inline char *__bio_kmap_irq(struct bio *bio, unsigned short idx, unsigned long *flags) { return bvec_kmap_irq(bio_iovec_idx(bio, idx), flags); -- cgit v1.2.3 From 672289e9faa56acd4e39ad866ea258b7be7c99a6 Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Sat, 10 Sep 2005 00:27:21 -0700 Subject: [PATCH] i386/x86_64: make get_cpu_vendor() static get_cpu_vendor() no longer has any users in other files. Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-x86_64/proto.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include') diff --git a/include/asm-x86_64/proto.h b/include/asm-x86_64/proto.h index 6c813eb521f3..f7574196424e 100644 --- a/include/asm-x86_64/proto.h +++ b/include/asm-x86_64/proto.h @@ -8,7 +8,6 @@ struct cpuinfo_x86; struct pt_regs; -extern void get_cpu_vendor(struct cpuinfo_x86*); extern void start_kernel(void); extern void pda_init(int); -- cgit v1.2.3 From 64ed93a268bc18fa6f72f61420d0e0022c5e38d1 Mon Sep 17 00:00:00 2001 From: Nishanth Aravamudan Date: Sat, 10 Sep 2005 00:27:21 -0700 Subject: [PATCH] add schedule_timeout_{,un}interruptible() interfaces Add schedule_timeout_{,un}interruptible() interfaces so that schedule_timeout() callers don't have to worry about forgetting to add the set_current_state() call beforehand. Signed-off-by: Nishanth Aravamudan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sched.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/sched.h b/include/linux/sched.h index ac70f845b5b1..4b83cb230006 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -203,6 +203,8 @@ extern int in_sched_functions(unsigned long addr); #define MAX_SCHEDULE_TIMEOUT LONG_MAX extern signed long FASTCALL(schedule_timeout(signed long timeout)); +extern signed long schedule_timeout_interruptible(signed long timeout); +extern signed long schedule_timeout_uninterruptible(signed long timeout); asmlinkage void schedule(void); struct namespace; -- cgit v1.2.3 From 84f902c0903a98a315b45a4fba3d2ac0de388256 Mon Sep 17 00:00:00 2001 From: Nishanth Aravamudan Date: Sat, 10 Sep 2005 00:27:22 -0700 Subject: [PATCH] include: update jiffies/{m,u}secs conversion functions Clarify the human-time units to jiffies conversion functions by using the constants in time.h. This makes many of the subsequent patches direct copies of the current code. Signed-off-by: Nishanth Aravamudan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/jiffies.h | 40 ++++++++++++++++++++-------------------- include/linux/time.h | 2 ++ 2 files changed, 22 insertions(+), 20 deletions(-) (limited to 'include') diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h index d7a2555a886c..6acfdbba734b 100644 --- a/include/linux/jiffies.h +++ b/include/linux/jiffies.h @@ -254,23 +254,23 @@ static inline u64 get_jiffies_64(void) */ static inline unsigned int jiffies_to_msecs(const unsigned long j) { -#if HZ <= 1000 && !(1000 % HZ) - return (1000 / HZ) * j; -#elif HZ > 1000 && !(HZ % 1000) - return (j + (HZ / 1000) - 1)/(HZ / 1000); +#if HZ <= MSEC_PER_SEC && !(MSEC_PER_SEC % HZ) + return (MSEC_PER_SEC / HZ) * j; +#elif HZ > MSEC_PER_SEC && !(HZ % MSEC_PER_SEC) + return (j + (HZ / MSEC_PER_SEC) - 1)/(HZ / MSEC_PER_SEC); #else - return (j * 1000) / HZ; + return (j * MSEC_PER_SEC) / HZ; #endif } static inline unsigned int jiffies_to_usecs(const unsigned long j) { -#if HZ <= 1000000 && !(1000000 % HZ) - return (1000000 / HZ) * j; -#elif HZ > 1000000 && !(HZ % 1000000) - return (j + (HZ / 1000000) - 1)/(HZ / 1000000); +#if HZ <= USEC_PER_SEC && !(USEC_PER_SEC % HZ) + return (USEC_PER_SEC / HZ) * j; +#elif HZ > USEC_PER_SEC && !(HZ % USEC_PER_SEC) + return (j + (HZ / USEC_PER_SEC) - 1)/(HZ / USEC_PER_SEC); #else - return (j * 1000000) / HZ; + return (j * USEC_PER_SEC) / HZ; #endif } @@ -278,12 +278,12 @@ static inline unsigned long msecs_to_jiffies(const unsigned int m) { if (m > jiffies_to_msecs(MAX_JIFFY_OFFSET)) return MAX_JIFFY_OFFSET; -#if HZ <= 1000 && !(1000 % HZ) - return (m + (1000 / HZ) - 1) / (1000 / HZ); -#elif HZ > 1000 && !(HZ % 1000) - return m * (HZ / 1000); +#if HZ <= MSEC_PER_SEC && !(MSEC_PER_SEC % HZ) + return (m + (MSEC_PER_SEC / HZ) - 1) / (MSEC_PER_SEC / HZ); +#elif HZ > MSEC_PER_SEC && !(HZ % MSEC_PER_SEC) + return m * (HZ / MSEC_PER_SEC); #else - return (m * HZ + 999) / 1000; + return (m * HZ + MSEC_PER_SEC - 1) / MSEC_PER_SEC; #endif } @@ -291,12 +291,12 @@ static inline unsigned long usecs_to_jiffies(const unsigned int u) { if (u > jiffies_to_usecs(MAX_JIFFY_OFFSET)) return MAX_JIFFY_OFFSET; -#if HZ <= 1000000 && !(1000000 % HZ) - return (u + (1000000 / HZ) - 1) / (1000000 / HZ); -#elif HZ > 1000000 && !(HZ % 1000000) - return u * (HZ / 1000000); +#if HZ <= USEC_PER_SEC && !(USEC_PER_SEC % HZ) + return (u + (USEC_PER_SEC / HZ) - 1) / (USEC_PER_SEC / HZ); +#elif HZ > USEC_PER_SEC && !(HZ % USEC_PER_SEC) + return u * (HZ / USEC_PER_SEC); #else - return (u * HZ + 999999) / 1000000; + return (u * HZ + USEC_PER_SEC - 1) / USEC_PER_SEC; #endif } diff --git a/include/linux/time.h b/include/linux/time.h index c10d4c21c183..36fb2ef13cff 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -28,6 +28,8 @@ struct timezone { #ifdef __KERNEL__ /* Parameters used to convert the timespec values */ +#define MSEC_PER_SEC (1000L) + #ifndef USEC_PER_SEC #define USEC_PER_SEC (1000000L) #endif -- cgit v1.2.3 From 373016e9e1353f2af871993d27d00768f08cc883 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Sat, 10 Sep 2005 00:27:23 -0700 Subject: [PATCH] time.h: remove ifdefs Remove these ifdefs - there's no need to have more than one definition of these multipliers anywhere. Cc: Nishanth Aravamudan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/time.h | 9 --------- 1 file changed, 9 deletions(-) (limited to 'include') diff --git a/include/linux/time.h b/include/linux/time.h index 36fb2ef13cff..8e83f4e778bb 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -29,18 +29,9 @@ struct timezone { /* Parameters used to convert the timespec values */ #define MSEC_PER_SEC (1000L) - -#ifndef USEC_PER_SEC #define USEC_PER_SEC (1000000L) -#endif - -#ifndef NSEC_PER_SEC #define NSEC_PER_SEC (1000000000L) -#endif - -#ifndef NSEC_PER_USEC #define NSEC_PER_USEC (1000L) -#endif static __inline__ int timespec_equal(struct timespec *a, struct timespec *b) { -- cgit v1.2.3 From bb0bb3b6596cdb08adb0b72453cc67d48e139c2c Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Sat, 10 Sep 2005 21:13:11 +1000 Subject: [PATCH] ppc32: Kill init on unhandled synchronous signals This is a patch that I have had in my tree for ages. If init causes an exception that raises a signal, such as a SIGSEGV, SIGILL or SIGFPE, and it hasn't registered a handler for it, we don't deliver the signal, since init doesn't get any signals that it doesn't have a handler for. But that means that we just return to userland and generate the same exception again immediately. With this patch we print a message and kill init in this situation. This is very useful when you have a bug in the kernel that means that init doesn't get as far as executing its first instruction. :) Without this patch the system hangs when it gets to starting the userland init; with it you at least get a message giving you a clue about what has gone wrong. Signed-off-by: Paul Mackerras Signed-off-by: Linus Torvalds --- include/asm-ppc/system.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/asm-ppc/system.h b/include/asm-ppc/system.h index 513a334c5810..d754ab570fe0 100644 --- a/include/asm-ppc/system.h +++ b/include/asm-ppc/system.h @@ -88,6 +88,7 @@ extern void *cacheable_memcpy(void *, const void *, unsigned int); extern int do_page_fault(struct pt_regs *, unsigned long, unsigned long); extern void bad_page_fault(struct pt_regs *, unsigned long, int); extern void die(const char *, struct pt_regs *, long); +extern void _exception(int, struct pt_regs *, int, unsigned long); #ifdef CONFIG_BOOKE_WDT extern u32 booke_wdt_enabled; extern u32 booke_wdt_period; -- cgit v1.2.3 From 31139971b3dc9fbb2e8a8572fb81e6e8470f363a Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Sat, 10 Sep 2005 21:13:13 +1000 Subject: [PATCH] ppc32: support hotplug cpu on powermacs This allows cpus to be off-lined on 32-bit SMP powermacs. When a cpu is off-lined, it is put into sleep mode with interrupts disabled. It can be on-lined again by asserting its soft-reset pin, which is connected to a GPIO pin. With this I can off-line the second cpu in my dual G4 powermac, which means that I can then suspend the machine (the suspend/resume code refuses to suspend if more than one cpu is online, and making it cope with multiple cpus is surprisingly messy). Signed-off-by: Paul Mackerras Signed-off-by: Linus Torvalds --- include/asm-ppc/smp.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include') diff --git a/include/asm-ppc/smp.h b/include/asm-ppc/smp.h index 17530c232c76..829481c0a9dc 100644 --- a/include/asm-ppc/smp.h +++ b/include/asm-ppc/smp.h @@ -41,6 +41,10 @@ extern void smp_send_xmon_break(int cpu); struct pt_regs; extern void smp_message_recv(int, struct pt_regs *); +extern int __cpu_disable(void); +extern void __cpu_die(unsigned int cpu); +extern void cpu_die(void) __attribute__((noreturn)); + #define NO_PROC_ID 0xFF /* No processor magic marker */ #define PROC_CHANGE_PENALTY 20 @@ -64,6 +68,8 @@ extern struct klock_info_struct klock_info; #else /* !(CONFIG_SMP) */ +static inline void cpu_die(void) { } + #endif /* !(CONFIG_SMP) */ #endif /* !(_PPC_SMP_H) */ -- cgit v1.2.3 From fe08ac3178243fbed61f24878ffcf5cfb53fceb1 Mon Sep 17 00:00:00 2001 From: "viro@ZenIV.linux.org.uk" Date: Fri, 9 Sep 2005 22:03:44 +0100 Subject: [PATCH] __user annotations (scsi/ch) Signed-off-by: Al Viro Signed-off-by: Linus Torvalds --- include/linux/chio.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/chio.h b/include/linux/chio.h index 63035ae67e63..a404c111c937 100644 --- a/include/linux/chio.h +++ b/include/linux/chio.h @@ -96,7 +96,7 @@ struct changer_position { */ struct changer_element_status { int ces_type; - unsigned char *ces_data; + unsigned char __user *ces_data; }; #define CESTATUS_FULL 0x01 /* full */ #define CESTATUS_IMPEXP 0x02 /* media was imported (inserted by sysop) */ -- cgit v1.2.3 From a7d0c210337246fa9c25b73cf76dfdbb159f642b Mon Sep 17 00:00:00 2001 From: Paolo 'Blaisorblade' Giarrusso Date: Sat, 10 Sep 2005 19:44:54 +0200 Subject: [PATCH] i386 / uml: add dwarf sections to static link script Inside the linker script, insert the code for DWARF debug info sections. This may help GDB'ing a Uml binary. Actually, it seems that ld is able to guess what I added correctly, but normal linker scripts include this section so it should be correct anyway adding it. On request by Sam Ravnborg , I've added it to asm-generic/vmlinux.lds.s. I've also moved there the stabs debug section, used the new macro in i386 linker script and added DWARF debug section to that. In the truth, I've not been able to verify the difference in GDB behaviour after this change (I've seen large improvements with another patch). This may depend on my binutils version, older one may have worse defaults. However, this section is present in normal linker script, so add it at least for the sake of cleanness. Signed-off-by: Paolo 'Blaisorblade' Giarrusso Acked-by: Sam Ravnborg Signed-off-by: Linus Torvalds --- include/asm-generic/vmlinux.lds.h | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) (limited to 'include') diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index 6f857be2b644..a9c55490fb82 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -103,3 +103,41 @@ VMLINUX_SYMBOL(__kprobes_text_start) = .; \ *(.kprobes.text) \ VMLINUX_SYMBOL(__kprobes_text_end) = .; + + /* DWARF debug sections. + Symbols in the DWARF debugging sections are relative to + the beginning of the section so we begin them at 0. */ +#define DWARF_DEBUG \ + /* DWARF 1 */ \ + .debug 0 : { *(.debug) } \ + .line 0 : { *(.line) } \ + /* GNU DWARF 1 extensions */ \ + .debug_srcinfo 0 : { *(.debug_srcinfo) } \ + .debug_sfnames 0 : { *(.debug_sfnames) } \ + /* DWARF 1.1 and DWARF 2 */ \ + .debug_aranges 0 : { *(.debug_aranges) } \ + .debug_pubnames 0 : { *(.debug_pubnames) } \ + /* DWARF 2 */ \ + .debug_info 0 : { *(.debug_info \ + .gnu.linkonce.wi.*) } \ + .debug_abbrev 0 : { *(.debug_abbrev) } \ + .debug_line 0 : { *(.debug_line) } \ + .debug_frame 0 : { *(.debug_frame) } \ + .debug_str 0 : { *(.debug_str) } \ + .debug_loc 0 : { *(.debug_loc) } \ + .debug_macinfo 0 : { *(.debug_macinfo) } \ + /* SGI/MIPS DWARF 2 extensions */ \ + .debug_weaknames 0 : { *(.debug_weaknames) } \ + .debug_funcnames 0 : { *(.debug_funcnames) } \ + .debug_typenames 0 : { *(.debug_typenames) } \ + .debug_varnames 0 : { *(.debug_varnames) } \ + + /* Stabs debugging sections. */ +#define STABS_DEBUG \ + .stab 0 : { *(.stab) } \ + .stabstr 0 : { *(.stabstr) } \ + .stab.excl 0 : { *(.stab.excl) } \ + .stab.exclstr 0 : { *(.stab.exclstr) } \ + .stab.index 0 : { *(.stab.index) } \ + .stab.indexstr 0 : { *(.stab.indexstr) } \ + .comment 0 : { *(.comment) } -- cgit v1.2.3 From d99c4022f60a9aa3a8dc6b7d71f3d0998c696912 Mon Sep 17 00:00:00 2001 From: Paolo 'Blaisorblade' Giarrusso Date: Sat, 10 Sep 2005 19:44:56 +0200 Subject: [PATCH] uml: inline mk_pte and various friends Turns out that, for UML, a *lot* of VM-related trivial functions are not inlined but rather normal functions. In other sections of UML code, this is justified by having files which interact with the host and cannot therefore include kernel headers, but in this case there's no such justification. I've had to turn many of them to macros because of missing declarations. While doing this, I've decided to reuse some already existing macros. Signed-off-by: Paolo 'Blaisorblade' Giarrusso Signed-off-by: Linus Torvalds --- include/asm-um/page.h | 3 +-- include/asm-um/pgtable.h | 16 +++++++++++----- 2 files changed, 12 insertions(+), 7 deletions(-) (limited to 'include') diff --git a/include/asm-um/page.h b/include/asm-um/page.h index bd850a249183..2c192abe9aeb 100644 --- a/include/asm-um/page.h +++ b/include/asm-um/page.h @@ -96,8 +96,7 @@ extern unsigned long uml_physmem; #define __va_space (8*1024*1024) -extern unsigned long to_phys(void *virt); -extern void *to_virt(unsigned long phys); +#include "mem.h" /* Cast to unsigned long before casting to void * to avoid a warning from * mmap_kmem about cutting a long long down to a void *. Not sure that diff --git a/include/asm-um/pgtable.h b/include/asm-um/pgtable.h index b48e0966ecd7..ed06170e0edd 100644 --- a/include/asm-um/pgtable.h +++ b/include/asm-um/pgtable.h @@ -326,14 +326,22 @@ static inline void set_pte(pte_t *pteptr, pte_t pteval) } #define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) -extern phys_t page_to_phys(struct page *page); - /* * Conversion functions: convert a page and protection to a page entry, * and a page entry and page directory to the page they refer to. */ -extern pte_t mk_pte(struct page *page, pgprot_t pgprot); +#define phys_to_page(phys) pfn_to_page(phys_to_pfn(phys)) +#define __virt_to_page(virt) phys_to_page(__pa(virt)) +#define page_to_phys(page) pfn_to_phys(page_to_pfn(page)) + +#define mk_pte(page, pgprot) \ + ({ pte_t pte; \ + \ + pte_set_val(pte, page_to_phys(page), (pgprot)); \ + if (pte_present(pte)) \ + pte_mknewprot(pte_mknewpage(pte)); \ + pte;}) static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) { @@ -410,8 +418,6 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) #endif #endif -extern struct page *phys_to_page(const unsigned long phys); -extern struct page *__virt_to_page(const unsigned long virt); #define virt_to_page(addr) __virt_to_page((const unsigned long) addr) /* -- cgit v1.2.3 From d3fd4c2d48ac4590a922f2a950a2d46386c97a8a Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 11 Sep 2005 00:24:27 +0100 Subject: [PATCH] uml spinlock breakage mingo missed that one... Signed-off-by: Al Viro Signed-off-by: Linus Torvalds --- include/asm-um/spinlock_types.h | 6 ++++++ 1 file changed, 6 insertions(+) create mode 100644 include/asm-um/spinlock_types.h (limited to 'include') diff --git a/include/asm-um/spinlock_types.h b/include/asm-um/spinlock_types.h new file mode 100644 index 000000000000..e5a94294bf82 --- /dev/null +++ b/include/asm-um/spinlock_types.h @@ -0,0 +1,6 @@ +#ifndef __UM_SPINLOCK_TYPES_H +#define __UM_SPINLOCK_TYPES_H + +#include "asm/arch/spinlock_types.h" + +#endif -- cgit v1.2.3 From a2a979821b6ab75a4f143cfaa1c4672cc259ec10 Mon Sep 17 00:00:00 2001 From: Keith Owens Date: Sun, 11 Sep 2005 17:19:06 +1000 Subject: [PATCH] MCA/INIT: scheduler hooks Scheduler hooks to see/change which process is deemed to be on a cpu. Signed-off-by: Keith Owens Signed-off-by: Tony Luck --- include/linux/sched.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/sched.h b/include/linux/sched.h index 4b83cb230006..ed3bb19d1337 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -904,6 +904,8 @@ extern int task_curr(const task_t *p); extern int idle_cpu(int cpu); extern int sched_setscheduler(struct task_struct *, int, struct sched_param *); extern task_t *idle_task(int cpu); +extern task_t *curr_task(int cpu); +extern void set_curr_task(int cpu, task_t *p); void yield(void); -- cgit v1.2.3 From e619ae0b96b6ace6629a6a0c6a5db23861ddaa78 Mon Sep 17 00:00:00 2001 From: Keith Owens Date: Sun, 11 Sep 2005 17:20:14 +1000 Subject: [IA64] MCA/INIT: add an extra thread_info flag Add an extra thread_info flag to indicate the special MCA/INIT stacks. Mainly for debuggers. Signed-off-by: Keith Owens Signed-off-by: Tony Luck --- include/asm-ia64/ptrace.h | 2 +- include/asm-ia64/thread_info.h | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/asm-ia64/ptrace.h b/include/asm-ia64/ptrace.h index c8766def9ee6..fc544929ac34 100644 --- a/include/asm-ia64/ptrace.h +++ b/include/asm-ia64/ptrace.h @@ -119,7 +119,7 @@ struct pt_regs { unsigned long ar_unat; /* interrupted task's NaT register (preserved) */ unsigned long ar_pfs; /* prev function state */ unsigned long ar_rsc; /* RSE configuration */ - /* The following two are valid only if cr_ipsr.cpl > 0: */ + /* The following two are valid only if cr_ipsr.cpl > 0 || ti->flags & _TIF_MCA_INIT */ unsigned long ar_rnat; /* RSE NaT */ unsigned long ar_bspstore; /* RSE bspstore */ diff --git a/include/asm-ia64/thread_info.h b/include/asm-ia64/thread_info.h index b2c79f0694f8..cf4a950a0f4f 100644 --- a/include/asm-ia64/thread_info.h +++ b/include/asm-ia64/thread_info.h @@ -76,6 +76,7 @@ struct thread_info { #define TIF_SIGDELAYED 5 /* signal delayed from MCA/INIT/NMI/PMI context */ #define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling TIF_NEED_RESCHED */ #define TIF_MEMDIE 17 +#define TIF_MCA_INIT 18 /* this task is processing MCA or INIT */ #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) @@ -85,6 +86,7 @@ struct thread_info { #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) #define _TIF_SIGDELAYED (1 << TIF_SIGDELAYED) #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) +#define _TIF_MCA_INIT (1 << TIF_MCA_INIT) /* "work to do on user-return" bits */ #define TIF_ALLWORK_MASK (_TIF_NOTIFY_RESUME|_TIF_SIGPENDING|_TIF_NEED_RESCHED|_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SIGDELAYED) -- cgit v1.2.3 From 7f613c7d2203ae137d98fc1c38abc30fd7048637 Mon Sep 17 00:00:00 2001 From: Keith Owens Date: Sun, 11 Sep 2005 17:22:53 +1000 Subject: [PATCH] MCA/INIT: use per cpu stacks The bulk of the change. Use per cpu MCA/INIT stacks. Change the SAL to OS state (sos) to be per process. Do all the assembler work on the MCA/INIT stacks, leaving the original stack alone. Pass per cpu state data to the C handlers for MCA and INIT, which also means changing the mca_drv interfaces slightly. Lots of verification on whether the original stack is usable before converting it to a sleeping process. Signed-off-by: Keith Owens Signed-off-by: Tony Luck --- include/asm-ia64/mca.h | 102 ++++++++++++++++++++++-------------- include/asm-ia64/mca_asm.h | 125 ++++++++++----------------------------------- 2 files changed, 91 insertions(+), 136 deletions(-) (limited to 'include') diff --git a/include/asm-ia64/mca.h b/include/asm-ia64/mca.h index 149ad0118455..97a28b8b2ddd 100644 --- a/include/asm-ia64/mca.h +++ b/include/asm-ia64/mca.h @@ -11,8 +11,6 @@ #ifndef _ASM_IA64_MCA_H #define _ASM_IA64_MCA_H -#define IA64_MCA_STACK_SIZE 8192 - #if !defined(__ASSEMBLY__) #include @@ -48,7 +46,8 @@ typedef union cmcv_reg_u { enum { IA64_MCA_RENDEZ_CHECKIN_NOTDONE = 0x0, - IA64_MCA_RENDEZ_CHECKIN_DONE = 0x1 + IA64_MCA_RENDEZ_CHECKIN_DONE = 0x1, + IA64_MCA_RENDEZ_CHECKIN_INIT = 0x2, }; /* Information maintained by the MC infrastructure */ @@ -63,18 +62,42 @@ typedef struct ia64_mc_info_s { } ia64_mc_info_t; -typedef struct ia64_mca_sal_to_os_state_s { - u64 imsto_os_gp; /* GP of the os registered with the SAL */ - u64 imsto_pal_proc; /* PAL_PROC entry point - physical addr */ - u64 imsto_sal_proc; /* SAL_PROC entry point - physical addr */ - u64 imsto_sal_gp; /* GP of the SAL - physical */ - u64 imsto_rendez_state; /* Rendez state information */ - u64 imsto_sal_check_ra; /* Return address in SAL_CHECK while going - * back to SAL from OS after MCA handling. - */ - u64 pal_min_state; /* from PAL in r17 */ - u64 proc_state_param; /* from PAL in r18. See SDV 2:268 11.3.2.1 */ -} ia64_mca_sal_to_os_state_t; +/* Handover state from SAL to OS and vice versa, for both MCA and INIT events. + * Besides the handover state, it also contains some saved registers from the + * time of the event. + * Note: mca_asm.S depends on the precise layout of this structure. + */ + +struct ia64_sal_os_state { + /* SAL to OS, must be at offset 0 */ + u64 os_gp; /* GP of the os registered with the SAL, physical */ + u64 pal_proc; /* PAL_PROC entry point, physical */ + u64 sal_proc; /* SAL_PROC entry point, physical */ + u64 rv_rc; /* MCA - Rendezvous state, INIT - reason code */ + u64 proc_state_param; /* from R18 */ + u64 monarch; /* 1 for a monarch event, 0 for a slave */ + /* common, must follow SAL to OS */ + u64 sal_ra; /* Return address in SAL, physical */ + u64 sal_gp; /* GP of the SAL - physical */ + pal_min_state_area_t *pal_min_state; /* from R17. physical in asm, virtual in C */ + u64 prev_IA64_KR_CURRENT; /* previous value of IA64_KR(CURRENT) */ + struct task_struct *prev_task; /* previous task, NULL if it is not useful */ + /* Some interrupt registers are not saved in minstate, pt_regs or + * switch_stack. Because MCA/INIT can occur when interrupts are + * disabled, we need to save the additional interrupt registers over + * MCA/INIT and resume. + */ + u64 isr; + u64 ifa; + u64 itir; + u64 iipa; + u64 iim; + u64 iha; + /* OS to SAL, must follow common */ + u64 os_status; /* OS status to SAL, enum below */ + u64 context; /* 0 if return to same context + 1 if return to new context */ +}; enum { IA64_MCA_CORRECTED = 0x0, /* Error has been corrected by OS_MCA */ @@ -83,36 +106,22 @@ enum { IA64_MCA_HALT = -3 /* System to be halted by SAL */ }; +enum { + IA64_INIT_RESUME = 0x0, /* Resume after return from INIT */ + IA64_INIT_WARM_BOOT = -1, /* Warm boot of the system need from SAL */ +}; + enum { IA64_MCA_SAME_CONTEXT = 0x0, /* SAL to return to same context */ IA64_MCA_NEW_CONTEXT = -1 /* SAL to return to new context */ }; -typedef struct ia64_mca_os_to_sal_state_s { - u64 imots_os_status; /* OS status to SAL as to what happened - * with the MCA handling. - */ - u64 imots_sal_gp; /* GP of the SAL - physical */ - u64 imots_context; /* 0 if return to same context - 1 if return to new context */ - u64 *imots_new_min_state; /* Pointer to structure containing - * new values of registers in the min state - * save area. - */ - u64 imots_sal_check_ra; /* Return address in SAL_CHECK while going - * back to SAL from OS after MCA handling. - */ -} ia64_mca_os_to_sal_state_t; - /* Per-CPU MCA state that is too big for normal per-CPU variables. */ struct ia64_mca_cpu { - u64 stack[IA64_MCA_STACK_SIZE/8]; /* MCA memory-stack */ - u64 proc_state_dump[512]; - u64 stackframe[32]; - u64 rbstore[IA64_MCA_STACK_SIZE/8]; /* MCA reg.-backing store */ + u64 mca_stack[KERNEL_STACK_SIZE/8]; u64 init_stack[KERNEL_STACK_SIZE/8]; -} __attribute__ ((aligned(16))); +}; /* Array of physical addresses of each CPU's MCA area. */ extern unsigned long __per_cpu_mca[NR_CPUS]; @@ -121,12 +130,29 @@ extern void ia64_mca_init(void); extern void ia64_mca_cpu_init(void *); extern void ia64_os_mca_dispatch(void); extern void ia64_os_mca_dispatch_end(void); -extern void ia64_mca_ucmc_handler(void); +extern void ia64_mca_ucmc_handler(struct pt_regs *, struct ia64_sal_os_state *); +extern void ia64_init_handler(struct pt_regs *, + struct switch_stack *, + struct ia64_sal_os_state *); extern void ia64_monarch_init_handler(void); extern void ia64_slave_init_handler(void); extern void ia64_mca_cmc_vector_setup(void); -extern int ia64_reg_MCA_extension(void*); +extern int ia64_reg_MCA_extension(int (*fn)(void *, struct ia64_sal_os_state *)); extern void ia64_unreg_MCA_extension(void); +extern u64 ia64_get_rnat(u64 *); + +#else /* __ASSEMBLY__ */ + +#define IA64_MCA_CORRECTED 0x0 /* Error has been corrected by OS_MCA */ +#define IA64_MCA_WARM_BOOT -1 /* Warm boot of the system need from SAL */ +#define IA64_MCA_COLD_BOOT -2 /* Cold boot of the system need from SAL */ +#define IA64_MCA_HALT -3 /* System to be halted by SAL */ + +#define IA64_INIT_RESUME 0x0 /* Resume after return from INIT */ +#define IA64_INIT_WARM_BOOT -1 /* Warm boot of the system need from SAL */ + +#define IA64_MCA_SAME_CONTEXT 0x0 /* SAL to return to same context */ +#define IA64_MCA_NEW_CONTEXT -1 /* SAL to return to new context */ #endif /* !__ASSEMBLY__ */ #endif /* _ASM_IA64_MCA_H */ diff --git a/include/asm-ia64/mca_asm.h b/include/asm-ia64/mca_asm.h index 836953e0f91f..27c9203d8ce3 100644 --- a/include/asm-ia64/mca_asm.h +++ b/include/asm-ia64/mca_asm.h @@ -8,6 +8,8 @@ * Copyright (C) 2000 David Mosberger-Tang * Copyright (C) 2002 Intel Corp. * Copyright (C) 2002 Jenna Hall + * Copyright (C) 2005 Silicon Graphics, Inc + * Copyright (C) 2005 Keith Owens */ #ifndef _ASM_IA64_MCA_ASM_H #define _ASM_IA64_MCA_ASM_H @@ -207,106 +209,33 @@ ;; /* - * The following offsets capture the order in which the - * RSE related registers from the old context are - * saved onto the new stack frame. + * The MCA and INIT stacks in struct ia64_mca_cpu look like normal kernel + * stacks, except that the SAL/OS state and a switch_stack are stored near the + * top of the MCA/INIT stack. To support concurrent entry to MCA or INIT, as + * well as MCA over INIT, each event needs its own SAL/OS state. All entries + * are 16 byte aligned. * - * +-----------------------+ - * |NDIRTY [BSP - BSPSTORE]| - * +-----------------------+ - * | RNAT | - * +-----------------------+ - * | BSPSTORE | - * +-----------------------+ - * | IFS | - * +-----------------------+ - * | PFS | - * +-----------------------+ - * | RSC | - * +-----------------------+ <-------- Bottom of new stack frame + * +---------------------------+ + * | pt_regs | + * +---------------------------+ + * | switch_stack | + * +---------------------------+ + * | SAL/OS state | + * +---------------------------+ + * | 16 byte scratch area | + * +---------------------------+ <-------- SP at start of C MCA handler + * | ..... | + * +---------------------------+ + * | RBS for MCA/INIT handler | + * +---------------------------+ + * | struct task for MCA/INIT | + * +---------------------------+ <-------- Bottom of MCA/INIT stack */ -#define rse_rsc_offset 0 -#define rse_pfs_offset (rse_rsc_offset+0x08) -#define rse_ifs_offset (rse_pfs_offset+0x08) -#define rse_bspstore_offset (rse_ifs_offset+0x08) -#define rse_rnat_offset (rse_bspstore_offset+0x08) -#define rse_ndirty_offset (rse_rnat_offset+0x08) -/* - * rse_switch_context - * - * 1. Save old RSC onto the new stack frame - * 2. Save PFS onto new stack frame - * 3. Cover the old frame and start a new frame. - * 4. Save IFS onto new stack frame - * 5. Save the old BSPSTORE on the new stack frame - * 6. Save the old RNAT on the new stack frame - * 7. Write BSPSTORE with the new backing store pointer - * 8. Read and save the new BSP to calculate the #dirty registers - * NOTE: Look at pages 11-10, 11-11 in PRM Vol 2 - */ -#define rse_switch_context(temp,p_stackframe,p_bspstore) \ - ;; \ - mov temp=ar.rsc;; \ - st8 [p_stackframe]=temp,8;; \ - mov temp=ar.pfs;; \ - st8 [p_stackframe]=temp,8; \ - cover ;; \ - mov temp=cr.ifs;; \ - st8 [p_stackframe]=temp,8;; \ - mov temp=ar.bspstore;; \ - st8 [p_stackframe]=temp,8;; \ - mov temp=ar.rnat;; \ - st8 [p_stackframe]=temp,8; \ - mov ar.bspstore=p_bspstore;; \ - mov temp=ar.bsp;; \ - sub temp=temp,p_bspstore;; \ - st8 [p_stackframe]=temp,8;; - -/* - * rse_return_context - * 1. Allocate a zero-sized frame - * 2. Store the number of dirty registers RSC.loadrs field - * 3. Issue a loadrs to insure that any registers from the interrupted - * context which were saved on the new stack frame have been loaded - * back into the stacked registers - * 4. Restore BSPSTORE - * 5. Restore RNAT - * 6. Restore PFS - * 7. Restore IFS - * 8. Restore RSC - * 9. Issue an RFI - */ -#define rse_return_context(psr_mask_reg,temp,p_stackframe) \ - ;; \ - alloc temp=ar.pfs,0,0,0,0; \ - add p_stackframe=rse_ndirty_offset,p_stackframe;; \ - ld8 temp=[p_stackframe];; \ - shl temp=temp,16;; \ - mov ar.rsc=temp;; \ - loadrs;; \ - add p_stackframe=-rse_ndirty_offset+rse_bspstore_offset,p_stackframe;;\ - ld8 temp=[p_stackframe];; \ - mov ar.bspstore=temp;; \ - add p_stackframe=-rse_bspstore_offset+rse_rnat_offset,p_stackframe;;\ - ld8 temp=[p_stackframe];; \ - mov ar.rnat=temp;; \ - add p_stackframe=-rse_rnat_offset+rse_pfs_offset,p_stackframe;; \ - ld8 temp=[p_stackframe];; \ - mov ar.pfs=temp;; \ - add p_stackframe=-rse_pfs_offset+rse_ifs_offset,p_stackframe;; \ - ld8 temp=[p_stackframe];; \ - mov cr.ifs=temp;; \ - add p_stackframe=-rse_ifs_offset+rse_rsc_offset,p_stackframe;; \ - ld8 temp=[p_stackframe];; \ - mov ar.rsc=temp ; \ - mov temp=psr;; \ - or temp=temp,psr_mask_reg;; \ - mov cr.ipsr=temp;; \ - mov temp=ip;; \ - add temp=0x30,temp;; \ - mov cr.iip=temp;; \ - srlz.i;; \ - rfi;; +#define ALIGN16(x) ((x)&~15) +#define MCA_PT_REGS_OFFSET ALIGN16(KERNEL_STACK_SIZE-IA64_PT_REGS_SIZE) +#define MCA_SWITCH_STACK_OFFSET ALIGN16(MCA_PT_REGS_OFFSET-IA64_SWITCH_STACK_SIZE) +#define MCA_SOS_OFFSET ALIGN16(MCA_SWITCH_STACK_OFFSET-IA64_SAL_OS_STATE_SIZE) +#define MCA_SP_OFFSET ALIGN16(MCA_SOS_OFFSET-16) #endif /* _ASM_IA64_MCA_ASM_H */ -- cgit v1.2.3 From 49a28cc8fd26f5317c47a9aeb2bdd1c33e21738e Mon Sep 17 00:00:00 2001 From: Keith Owens Date: Sun, 11 Sep 2005 17:24:42 +1000 Subject: [IA64] MCA/INIT: remove obsolete unwind code Delete the special case unwind code that was only used by the old MCA/INIT handler. Signed-off-by: Keith Owens Signed-off-by: Tony Luck --- include/asm-ia64/unwind.h | 7 ------- 1 file changed, 7 deletions(-) (limited to 'include') diff --git a/include/asm-ia64/unwind.h b/include/asm-ia64/unwind.h index 61426ad3ecdb..5df0276b0493 100644 --- a/include/asm-ia64/unwind.h +++ b/include/asm-ia64/unwind.h @@ -114,13 +114,6 @@ extern void unw_remove_unwind_table (void *handle); */ extern void unw_init_from_blocked_task (struct unw_frame_info *info, struct task_struct *t); -/* - * Prepare to unwind from interruption. The pt-regs and switch-stack structures must have - * be "adjacent" (no state modifications between pt-regs and switch-stack). - */ -extern void unw_init_from_interruption (struct unw_frame_info *info, struct task_struct *t, - struct pt_regs *pt, struct switch_stack *sw); - extern void unw_init_frame_info (struct unw_frame_info *info, struct task_struct *t, struct switch_stack *sw); -- cgit v1.2.3 From 8a6e43e9ee84eb8fb39bfdf8f0b6e466905491d0 Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Mon, 12 Sep 2005 11:18:10 +1000 Subject: [PATCH] m68knommu: cache support for 523x/528x processors Add support for the cache of the ColdFIre 523x family of processors. Enable the 528x cache by default now, all final shipping silicon has the cache bug fixed. Signed-off-by: Greg Ungerer Signed-off-by: Linus Torvalds --- include/asm-m68knommu/mcfcache.h | 25 +++++++++++-------------- 1 file changed, 11 insertions(+), 14 deletions(-) (limited to 'include') diff --git a/include/asm-m68knommu/mcfcache.h b/include/asm-m68knommu/mcfcache.h index bdd8c53ef34c..b17cd920977f 100644 --- a/include/asm-m68knommu/mcfcache.h +++ b/include/asm-m68knommu/mcfcache.h @@ -33,7 +33,7 @@ .endm #endif /* CONFIG_M5206 || CONFIG_M5206e || CONFIG_M5272 */ -#if defined(CONFIG_M527x) +#if defined(CONFIG_M523x) || defined(CONFIG_M527x) /* * New version 2 cores have a configurable split cache arrangement. * For now I am just enabling instruction cache - but ultimately I @@ -51,23 +51,20 @@ movec %d0,%CACR /* enable cache */ nop .endm -#endif /* CONFIG_M527x */ +#endif /* CONFIG_M523x || CONFIG_M527x */ #if defined(CONFIG_M528x) -/* - * Cache is totally broken on early 5282 silicon. So far now we - * disable its cache all together. - */ .macro CACHE_ENABLE - movel #0x01000000,%d0 - movec %d0,%CACR /* invalidate cache */ nop - movel #0x0000c000,%d0 /* set SDRAM cached only */ - movec %d0,%ACR0 - movel #0x00000000,%d0 /* no other regions cached */ - movec %d0,%ACR1 - movel #0x00000000,%d0 /* configure cache */ - movec %d0,%CACR /* enable cache */ + movel #0x01000000, %d0 + movec %d0, %CACR /* Invalidate cache */ + nop + movel #0x0000c020, %d0 /* Set SDRAM cached only */ + movec %d0, %ACR0 + movel #0xff00c000, %d0 /* Cache Flash also */ + movec %d0, %ACR1 + movel #0x80000200, %d0 /* Setup cache mask */ + movec %d0, %CACR /* Enable cache */ nop .endm #endif /* CONFIG_M528x */ -- cgit v1.2.3 From df28f34bf998795c4d4e08c1604eac0a6d84f502 Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Mon, 12 Sep 2005 11:18:10 +1000 Subject: [PATCH] m68knommu: correct prototype args in checksum.h Bring arg types for csum_partial_copy and csum_paritial_copy_from_user prototypes into line with their actual implementation. Signed-off-by: Greg Ungerer Signed-off-by: Linus Torvalds --- include/asm-m68knommu/checksum.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/asm-m68knommu/checksum.h b/include/asm-m68knommu/checksum.h index 92cf102c2534..294ec7583ac9 100644 --- a/include/asm-m68knommu/checksum.h +++ b/include/asm-m68knommu/checksum.h @@ -25,7 +25,8 @@ unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum) * better 64-bit) boundary */ -unsigned int csum_partial_copy(const char *src, char *dst, int len, int sum); +unsigned int csum_partial_copy(const unsigned char *src, unsigned char *dst, + int len, int sum); /* @@ -35,8 +36,8 @@ unsigned int csum_partial_copy(const char *src, char *dst, int len, int sum); * better 64-bit) boundary */ -extern unsigned int csum_partial_copy_from_user(const char *src, char *dst, - int len, int sum, int *csum_err); +extern unsigned int csum_partial_copy_from_user(const unsigned char *src, + unsigned char *dst, int len, int sum, int *csum_err); #define csum_partial_copy_nocheck(src, dst, len, sum) \ csum_partial_copy((src), (dst), (len), (sum)) -- cgit v1.2.3 From 9c1ee9387c0ce06d573e2d27de10cbc24179941e Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Mon, 12 Sep 2005 11:18:10 +1000 Subject: [PATCH] m68knommu: change addr arg to const in bitops.h/find_next_zero_bit() Change addr arg to find_next_zero_bit to be a const. Cleans up compiler warning. Signed-off-by: Greg Ungerer Signed-off-by: Linus Torvalds --- include/asm-m68knommu/bitops.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/asm-m68knommu/bitops.h b/include/asm-m68knommu/bitops.h index f95e32b40425..c42f88a9b9f9 100644 --- a/include/asm-m68knommu/bitops.h +++ b/include/asm-m68knommu/bitops.h @@ -259,7 +259,7 @@ static __inline__ int __test_bit(int nr, const volatile unsigned long * addr) #define find_first_bit(addr, size) \ find_next_bit((addr), (size), 0) -static __inline__ int find_next_zero_bit (void * addr, int size, int offset) +static __inline__ int find_next_zero_bit (const void * addr, int size, int offset) { unsigned long *p = ((unsigned long *) addr) + (offset >> 5); unsigned long result = offset & ~31UL; -- cgit v1.2.3 From 966cdb2fdf1776392c98f7d38e0eb9c6dd1c4715 Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Mon, 12 Sep 2005 11:18:10 +1000 Subject: [PATCH] m68knommu: dma support for 523x processors Support the DMA unit of the ColdFire 523x processor family. Signed-off-by: Greg Ungerer Signed-off-by: Linus Torvalds --- include/asm-m68knommu/mcfdma.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/asm-m68knommu/mcfdma.h b/include/asm-m68knommu/mcfdma.h index 350c6090b5c1..b93f8ba8a248 100644 --- a/include/asm-m68knommu/mcfdma.h +++ b/include/asm-m68knommu/mcfdma.h @@ -21,7 +21,7 @@ #define MCFDMA_BASE1 0x240 /* Base address of DMA 1 */ #elif defined(CONFIG_M5272) #define MCFDMA_BASE0 0x0e0 /* Base address of DMA 0 */ -#elif defined(CONFIG_M527x) || defined(CONFIG_M528x) +#elif defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) /* These are relative to the IPSBAR, not MBAR */ #define MCFDMA_BASE0 0x100 /* Base address of DMA 0 */ #define MCFDMA_BASE1 0x140 /* Base address of DMA 1 */ -- cgit v1.2.3 From 7ce4d42503949b62f481be989d8f5a25f5af10ff Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Mon, 12 Sep 2005 11:18:10 +1000 Subject: [PATCH] m68knommu: add SPI register definitions for 528x processors Add QSPI register definitions of ColdFIre 528x processor SPI controller. Patch originally submitted by Derek Cheung Signed-off-by: Greg Ungerer Signed-off-by: Linus Torvalds --- include/asm-m68knommu/m528xsim.h | 112 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 112 insertions(+) (limited to 'include') diff --git a/include/asm-m68knommu/m528xsim.h b/include/asm-m68knommu/m528xsim.h index 371993a206ac..610774a17f70 100644 --- a/include/asm-m68knommu/m528xsim.h +++ b/include/asm-m68knommu/m528xsim.h @@ -41,5 +41,117 @@ #define MCFSIM_DACR1 0x50 /* SDRAM base address 1 */ #define MCFSIM_DMR1 0x54 /* SDRAM address mask 1 */ +/* + * Derek Cheung - 6 Feb 2005 + * add I2C and QSPI register definition using Freescale's MCF5282 + */ +/* set Port AS pin for I2C or UART */ +#define MCF5282_GPIO_PASPAR (volatile u16 *) (MCF_IPSBAR + 0x00100056) + +/* Interrupt Mask Register Register Low */ +#define MCF5282_INTC0_IMRL (volatile u32 *) (MCF_IPSBAR + 0x0C0C) +/* Interrupt Control Register 7 */ +#define MCF5282_INTC0_ICR17 (volatile u8 *) (MCF_IPSBAR + 0x0C51) + + + +/********************************************************************* +* +* Inter-IC (I2C) Module +* +*********************************************************************/ +/* Read/Write access macros for general use */ +#define MCF5282_I2C_I2ADR (volatile u8 *) (MCF_IPSBAR + 0x0300) // Address +#define MCF5282_I2C_I2FDR (volatile u8 *) (MCF_IPSBAR + 0x0304) // Freq Divider +#define MCF5282_I2C_I2CR (volatile u8 *) (MCF_IPSBAR + 0x0308) // Control +#define MCF5282_I2C_I2SR (volatile u8 *) (MCF_IPSBAR + 0x030C) // Status +#define MCF5282_I2C_I2DR (volatile u8 *) (MCF_IPSBAR + 0x0310) // Data I/O + +/* Bit level definitions and macros */ +#define MCF5282_I2C_I2ADR_ADDR(x) (((x)&0x7F)<<0x01) + +#define MCF5282_I2C_I2FDR_IC(x) (((x)&0x3F)) + +#define MCF5282_I2C_I2CR_IEN (0x80) // I2C enable +#define MCF5282_I2C_I2CR_IIEN (0x40) // interrupt enable +#define MCF5282_I2C_I2CR_MSTA (0x20) // master/slave mode +#define MCF5282_I2C_I2CR_MTX (0x10) // transmit/receive mode +#define MCF5282_I2C_I2CR_TXAK (0x08) // transmit acknowledge enable +#define MCF5282_I2C_I2CR_RSTA (0x04) // repeat start + +#define MCF5282_I2C_I2SR_ICF (0x80) // data transfer bit +#define MCF5282_I2C_I2SR_IAAS (0x40) // I2C addressed as a slave +#define MCF5282_I2C_I2SR_IBB (0x20) // I2C bus busy +#define MCF5282_I2C_I2SR_IAL (0x10) // aribitration lost +#define MCF5282_I2C_I2SR_SRW (0x04) // slave read/write +#define MCF5282_I2C_I2SR_IIF (0x02) // I2C interrupt +#define MCF5282_I2C_I2SR_RXAK (0x01) // received acknowledge + + + +/********************************************************************* +* +* Queued Serial Peripheral Interface (QSPI) Module +* +*********************************************************************/ +/* Derek - 21 Feb 2005 */ +/* change to the format used in I2C */ +/* Read/Write access macros for general use */ +#define MCF5282_QSPI_QMR MCF_IPSBAR + 0x0340 +#define MCF5282_QSPI_QDLYR MCF_IPSBAR + 0x0344 +#define MCF5282_QSPI_QWR MCF_IPSBAR + 0x0348 +#define MCF5282_QSPI_QIR MCF_IPSBAR + 0x034C +#define MCF5282_QSPI_QAR MCF_IPSBAR + 0x0350 +#define MCF5282_QSPI_QDR MCF_IPSBAR + 0x0354 +#define MCF5282_QSPI_QCR MCF_IPSBAR + 0x0354 + +/* Bit level definitions and macros */ +#define MCF5282_QSPI_QMR_MSTR (0x8000) +#define MCF5282_QSPI_QMR_DOHIE (0x4000) +#define MCF5282_QSPI_QMR_BITS_16 (0x0000) +#define MCF5282_QSPI_QMR_BITS_8 (0x2000) +#define MCF5282_QSPI_QMR_BITS_9 (0x2400) +#define MCF5282_QSPI_QMR_BITS_10 (0x2800) +#define MCF5282_QSPI_QMR_BITS_11 (0x2C00) +#define MCF5282_QSPI_QMR_BITS_12 (0x3000) +#define MCF5282_QSPI_QMR_BITS_13 (0x3400) +#define MCF5282_QSPI_QMR_BITS_14 (0x3800) +#define MCF5282_QSPI_QMR_BITS_15 (0x3C00) +#define MCF5282_QSPI_QMR_CPOL (0x0200) +#define MCF5282_QSPI_QMR_CPHA (0x0100) +#define MCF5282_QSPI_QMR_BAUD(x) (((x)&0x00FF)) + +#define MCF5282_QSPI_QDLYR_SPE (0x80) +#define MCF5282_QSPI_QDLYR_QCD(x) (((x)&0x007F)<<8) +#define MCF5282_QSPI_QDLYR_DTL(x) (((x)&0x00FF)) + +#define MCF5282_QSPI_QWR_HALT (0x8000) +#define MCF5282_QSPI_QWR_WREN (0x4000) +#define MCF5282_QSPI_QWR_WRTO (0x2000) +#define MCF5282_QSPI_QWR_CSIV (0x1000) +#define MCF5282_QSPI_QWR_ENDQP(x) (((x)&0x000F)<<8) +#define MCF5282_QSPI_QWR_CPTQP(x) (((x)&0x000F)<<4) +#define MCF5282_QSPI_QWR_NEWQP(x) (((x)&0x000F)) + +#define MCF5282_QSPI_QIR_WCEFB (0x8000) +#define MCF5282_QSPI_QIR_ABRTB (0x4000) +#define MCF5282_QSPI_QIR_ABRTL (0x1000) +#define MCF5282_QSPI_QIR_WCEFE (0x0800) +#define MCF5282_QSPI_QIR_ABRTE (0x0400) +#define MCF5282_QSPI_QIR_SPIFE (0x0100) +#define MCF5282_QSPI_QIR_WCEF (0x0008) +#define MCF5282_QSPI_QIR_ABRT (0x0004) +#define MCF5282_QSPI_QIR_SPIF (0x0001) + +#define MCF5282_QSPI_QAR_ADDR(x) (((x)&0x003F)) + +#define MCF5282_QSPI_QDR_COMMAND(x) (((x)&0xFF00)) +#define MCF5282_QSPI_QCR_DATA(x) (((x)&0x00FF)<<8) +#define MCF5282_QSPI_QCR_CONT (0x8000) +#define MCF5282_QSPI_QCR_BITSE (0x4000) +#define MCF5282_QSPI_QCR_DT (0x2000) +#define MCF5282_QSPI_QCR_DSCK (0x1000) +#define MCF5282_QSPI_QCR_CS (((x)&0x000F)<<8) + /****************************************************************************/ #endif /* m528xsim_h */ -- cgit v1.2.3 From d871629b83774fc24db6dd2775ceaf46b433b056 Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Mon, 12 Sep 2005 11:18:10 +1000 Subject: [PATCH] m68knommu: allow for SDRAM and GPIO differences on 5270/1 and 5274/5 processors Allow for differences in the SDRAM controller setup and GPIO pin setup of the 5270/1 and 5274/5 parts. With separate config options for each now this no longer needs to be board specific. Signed-off-by: Greg Ungerer Signed-off-by: Linus Torvalds --- include/asm-m68knommu/m527xsim.h | 21 +++++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/asm-m68knommu/m527xsim.h b/include/asm-m68knommu/m527xsim.h index d280d013da03..e7878d0f7d7a 100644 --- a/include/asm-m68knommu/m527xsim.h +++ b/include/asm-m68knommu/m527xsim.h @@ -37,13 +37,14 @@ /* * SDRAM configuration registers. */ -#ifdef CONFIG_M5271EVB +#ifdef CONFIG_M5271 #define MCFSIM_DCR 0x40 /* SDRAM control */ #define MCFSIM_DACR0 0x48 /* SDRAM base address 0 */ #define MCFSIM_DMR0 0x4c /* SDRAM address mask 0 */ #define MCFSIM_DACR1 0x50 /* SDRAM base address 1 */ #define MCFSIM_DMR1 0x54 /* SDRAM address mask 1 */ -#else +#endif +#ifdef CONFIG_M5275 #define MCFSIM_DMR 0x40 /* SDRAM mode */ #define MCFSIM_DCR 0x44 /* SDRAM control */ #define MCFSIM_DCFG1 0x48 /* SDRAM configuration 1 */ @@ -54,5 +55,21 @@ #define MCFSIM_DMR1 0x5c /* SDRAM address mask 1 */ #endif +/* + * GPIO pins setups to enable the UARTs. + */ +#ifdef CONFIG_M5271 +#define MCF_GPIO_PAR_UART 0x100048 /* PAR UART address */ +#define UART0_ENABLE_MASK 0x000f +#define UART1_ENABLE_MASK 0x0ff0 +#define UART2_ENABLE_MASK 0x3000 +#endif +#ifdef CONFIG_M5275 +#define MCF_GPIO_PAR_UART 0x10007c /* PAR UART address */ +#define UART0_ENABLE_MASK 0x000f +#define UART1_ENABLE_MASK 0x00f0 +#define UART2_ENABLE_MASK 0x3f00 +#endif + /****************************************************************************/ #endif /* m527xsim_h */ -- cgit v1.2.3 From 4267292b0f368c1633ff3316a53b5f7fbada95f8 Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Mon, 12 Sep 2005 17:17:36 +1000 Subject: ppc64: Set up PCI tree from Open Firmware device tree This adds code which gives us the option on ppc64 of instantiating the PCI tree (the tree of pci_bus and pci_dev structs) from the Open Firmware device tree rather than by probing PCI configuration space. The OF device tree has a node for each PCI device and bridge in the system, with properties that tell us what addresses the firmware has configured for them and other details. There are a couple of reasons why this is needed. First, on systems with a hypervisor, there is a PCI-PCI bridge per slot under the PCI host bridges. These PCI-PCI bridges have special isolation features for virtualization. We can't write to their config space, and we are not supposed to be reading their config space either. The firmware tells us about the address ranges that they pass in the OF device tree. Secondly, on powermacs, the interrupt controller is in a PCI device that may be behind a PCI-PCI bridge. If we happened to take an interrupt just at the point when the device or a bridge on the path to it was disabled for probing, we would crash when we try to access the interrupt controller. I have implemented a platform-specific function which is called for each PCI bridge (host or PCI-PCI) to say whether the code should look in the device tree or use normal PCI probing for the devices under that bridge. On pSeries machines we use the device tree if we're running under a hypervisor, otherwise we use normal probing. On powermacs we use normal probing for the AGP bridge, since the device for the AGP bridge itself isn't shown in the device tree (at least on my G5), and the device tree for everything else. This has been tested on a dual G5 powermac, a partition on a POWER5 machine (running under the hypervisor), and a legacy iSeries partition. Signed-off-by: Paul Mackerras --- include/asm-ppc64/machdep.h | 1 + include/asm-ppc64/pci-bridge.h | 5 +++++ 2 files changed, 6 insertions(+) (limited to 'include') diff --git a/include/asm-ppc64/machdep.h b/include/asm-ppc64/machdep.h index 9a1ef4427ed2..7b25738c111f 100644 --- a/include/asm-ppc64/machdep.h +++ b/include/asm-ppc64/machdep.h @@ -88,6 +88,7 @@ struct machdep_calls { /* PCI stuff */ void (*pcibios_fixup)(void); + int (*pci_probe_mode)(struct pci_bus *); void (*restart)(char *cmd); void (*power_off)(void); diff --git a/include/asm-ppc64/pci-bridge.h b/include/asm-ppc64/pci-bridge.h index 6b4a5b1f695e..d8991389ab39 100644 --- a/include/asm-ppc64/pci-bridge.h +++ b/include/asm-ppc64/pci-bridge.h @@ -119,5 +119,10 @@ static inline struct pci_controller *pci_bus_to_host(struct pci_bus *bus) return PCI_DN(busdn)->phb; } +/* Return values for ppc_md.pci_probe_mode function */ +#define PCI_PROBE_NONE -1 /* Don't look at this bus at all */ +#define PCI_PROBE_NORMAL 0 /* Do normal PCI probing */ +#define PCI_PROBE_DEVTREE 1 /* Instantiate from device tree */ + #endif #endif /* __KERNEL__ */ -- cgit v1.2.3 From 962bca7f389229a30ced441d7b37f55f203006a2 Mon Sep 17 00:00:00 2001 From: Robert Jennings Date: Sat, 10 Sep 2005 16:01:07 +1000 Subject: [PATCH] ppc64: Add PTRACE_{GET|SET}VRREGS The ptrace get and set methods for VMX/Altivec registers present in the ppc tree were missing for ppc64. This patch adds the 32-bit and 64-bit methods. Updated with the suggestions from Anton following the lines of his code snippet. Added: - flush_altivec_to_thread calls as suggested by Anton - piecewise copy of structure to preserve 32-bit vrsave data as per Anton (I consolidated the 32 and 64bit versions with 2 helper macros - Anton) Signed-off-by: Robert C Jennings Signed-off-by: Anton Blanchard Signed-off-by: Paul Mackerras --- include/asm-ppc64/ptrace-common.h | 72 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) (limited to 'include') diff --git a/include/asm-ppc64/ptrace-common.h b/include/asm-ppc64/ptrace-common.h index af03547f9c7e..bd0f84c27bd0 100644 --- a/include/asm-ppc64/ptrace-common.h +++ b/include/asm-ppc64/ptrace-common.h @@ -11,6 +11,9 @@ #ifndef _PPC64_PTRACE_COMMON_H #define _PPC64_PTRACE_COMMON_H + +#include + /* * Set of msr bits that gdb can change on behalf of a process. */ @@ -69,4 +72,73 @@ static inline void clear_single_step(struct task_struct *task) clear_ti_thread_flag(task->thread_info, TIF_SINGLESTEP); } +#ifdef CONFIG_ALTIVEC +/* + * Get/set all the altivec registers vr0..vr31, vscr, vrsave, in one go. + * The transfer totals 34 quadword. Quadwords 0-31 contain the + * corresponding vector registers. Quadword 32 contains the vscr as the + * last word (offset 12) within that quadword. Quadword 33 contains the + * vrsave as the first word (offset 0) within the quadword. + * + * This definition of the VMX state is compatible with the current PPC32 + * ptrace interface. This allows signal handling and ptrace to use the + * same structures. This also simplifies the implementation of a bi-arch + * (combined (32- and 64-bit) gdb. + */ + +/* + * Get contents of AltiVec register state in task TASK + */ +static inline int get_vrregs(unsigned long __user *data, + struct task_struct *task) +{ + unsigned long regsize; + + /* copy AltiVec registers VR[0] .. VR[31] */ + regsize = 32 * sizeof(vector128); + if (copy_to_user(data, task->thread.vr, regsize)) + return -EFAULT; + data += (regsize / sizeof(unsigned long)); + + /* copy VSCR */ + regsize = 1 * sizeof(vector128); + if (copy_to_user(data, &task->thread.vscr, regsize)) + return -EFAULT; + data += (regsize / sizeof(unsigned long)); + + /* copy VRSAVE */ + if (put_user(task->thread.vrsave, (u32 __user *)data)) + return -EFAULT; + + return 0; +} + +/* + * Write contents of AltiVec register state into task TASK. + */ +static inline int set_vrregs(struct task_struct *task, + unsigned long __user *data) +{ + unsigned long regsize; + + /* copy AltiVec registers VR[0] .. VR[31] */ + regsize = 32 * sizeof(vector128); + if (copy_from_user(task->thread.vr, data, regsize)) + return -EFAULT; + data += (regsize / sizeof(unsigned long)); + + /* copy VSCR */ + regsize = 1 * sizeof(vector128); + if (copy_from_user(&task->thread.vscr, data, regsize)) + return -EFAULT; + data += (regsize / sizeof(unsigned long)); + + /* copy VRSAVE */ + if (get_user(task->thread.vrsave, (u32 __user *)data)) + return -EFAULT; + + return 0; +} +#endif + #endif /* _PPC64_PTRACE_COMMON_H */ -- cgit v1.2.3 From a0987224dc80b3eb98cc7a135422acbda8538146 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Sat, 10 Sep 2005 16:01:08 +1000 Subject: [PATCH] ppc64: ptrace cleanups - Remove the PPC_REG* defines - Wrap some more stuff with ifdef __KERNEL__ - Add missing PT_TRAP, PT_DAR, PT_DSISR defines - Add PTRACE_GETEVRREGS/PTRACE_SETEVRREGS, even though we dont use it on ppc64 we dont want to allocate them for something else. Signed-off-by: Anton Blanchard Signed-off-by: Paul Mackerras --- include/asm-ppc64/ptrace.h | 121 ++++++++++++++++++++++++++------------------- 1 file changed, 69 insertions(+), 52 deletions(-) (limited to 'include') diff --git a/include/asm-ppc64/ptrace.h b/include/asm-ppc64/ptrace.h index c96aad28fc08..a736000d7cf8 100644 --- a/include/asm-ppc64/ptrace.h +++ b/include/asm-ppc64/ptrace.h @@ -25,56 +25,49 @@ */ #ifndef __ASSEMBLY__ -#define PPC_REG unsigned long + struct pt_regs { - PPC_REG gpr[32]; - PPC_REG nip; - PPC_REG msr; - PPC_REG orig_gpr3; /* Used for restarting system calls */ - PPC_REG ctr; - PPC_REG link; - PPC_REG xer; - PPC_REG ccr; - PPC_REG softe; /* Soft enabled/disabled */ - PPC_REG trap; /* Reason for being here */ - PPC_REG dar; /* Fault registers */ - PPC_REG dsisr; - PPC_REG result; /* Result of a system call */ + unsigned long gpr[32]; + unsigned long nip; + unsigned long msr; + unsigned long orig_gpr3; /* Used for restarting system calls */ + unsigned long ctr; + unsigned long link; + unsigned long xer; + unsigned long ccr; + unsigned long softe; /* Soft enabled/disabled */ + unsigned long trap; /* Reason for being here */ + unsigned long dar; /* Fault registers */ + unsigned long dsisr; + unsigned long result; /* Result of a system call */ }; -#define PPC_REG_32 unsigned int struct pt_regs32 { - PPC_REG_32 gpr[32]; - PPC_REG_32 nip; - PPC_REG_32 msr; - PPC_REG_32 orig_gpr3; /* Used for restarting system calls */ - PPC_REG_32 ctr; - PPC_REG_32 link; - PPC_REG_32 xer; - PPC_REG_32 ccr; - PPC_REG_32 mq; /* 601 only (not used at present) */ - /* Used on APUS to hold IPL value. */ - PPC_REG_32 trap; /* Reason for being here */ - PPC_REG_32 dar; /* Fault registers */ - PPC_REG_32 dsisr; - PPC_REG_32 result; /* Result of a system call */ + unsigned int gpr[32]; + unsigned int nip; + unsigned int msr; + unsigned int orig_gpr3; /* Used for restarting system calls */ + unsigned int ctr; + unsigned int link; + unsigned int xer; + unsigned int ccr; + unsigned int mq; /* 601 only (not used at present) */ + unsigned int trap; /* Reason for being here */ + unsigned int dar; /* Fault registers */ + unsigned int dsisr; + unsigned int result; /* Result of a system call */ }; +#ifdef __KERNEL__ + #define instruction_pointer(regs) ((regs)->nip) + #ifdef CONFIG_SMP extern unsigned long profile_pc(struct pt_regs *regs); #else #define profile_pc(regs) instruction_pointer(regs) #endif -#endif /* __ASSEMBLY__ */ - -#define STACK_FRAME_OVERHEAD 112 /* size of minimum stack frame */ - -/* Size of dummy stack frame allocated when calling signal handler. */ -#define __SIGNAL_FRAMESIZE 128 -#define __SIGNAL_FRAMESIZE32 64 - #define user_mode(regs) ((((regs)->msr) >> MSR_PR_LG) & 0x1) #define force_successful_syscall_return() \ @@ -89,6 +82,16 @@ extern unsigned long profile_pc(struct pt_regs *regs); #define TRAP(regs) ((regs)->trap & ~0xF) #define CHECK_FULL_REGS(regs) BUG_ON(regs->trap & 1) +#endif /* __KERNEL__ */ + +#endif /* __ASSEMBLY__ */ + +#define STACK_FRAME_OVERHEAD 112 /* size of minimum stack frame */ + +/* Size of dummy stack frame allocated when calling signal handler. */ +#define __SIGNAL_FRAMESIZE 128 +#define __SIGNAL_FRAMESIZE32 64 + /* * Offsets used by 'ptrace' system call interface. */ @@ -135,17 +138,21 @@ extern unsigned long profile_pc(struct pt_regs *regs); #define PT_XER 37 #define PT_CCR 38 #define PT_SOFTE 39 +#define PT_TRAP 40 +#define PT_DAR 41 +#define PT_DSISR 42 #define PT_RESULT 43 #define PT_FPR0 48 -/* Kernel and userspace will both use this PT_FPSCR value. 32-bit apps will have - * visibility to the asm-ppc/ptrace.h header instead of this one. +/* + * Kernel and userspace will both use this PT_FPSCR value. 32-bit apps will + * have visibility to the asm-ppc/ptrace.h header instead of this one. */ -#define PT_FPSCR (PT_FPR0 + 32) /* each FP reg occupies 1 slot in 64-bit space */ +#define PT_FPSCR (PT_FPR0 + 32) /* each FP reg occupies 1 slot in 64-bit space */ #ifdef __KERNEL__ -#define PT_FPSCR32 (PT_FPR0 + 2*32 + 1) /* each FP reg occupies 2 32-bit userspace slots */ +#define PT_FPSCR32 (PT_FPR0 + 2*32 + 1) /* each FP reg occupies 2 32-bit userspace slots */ #endif #define PT_VR0 82 /* each Vector reg occupies 2 slots in 64-bit */ @@ -173,17 +180,27 @@ extern unsigned long profile_pc(struct pt_regs *regs); #define PTRACE_GETVRREGS 18 #define PTRACE_SETVRREGS 19 -/* Additional PTRACE requests implemented on PowerPC. */ -#define PPC_PTRACE_GETREGS 0x99 /* Get GPRs 0 - 31 */ -#define PPC_PTRACE_SETREGS 0x98 /* Set GPRs 0 - 31 */ -#define PPC_PTRACE_GETFPREGS 0x97 /* Get FPRs 0 - 31 */ -#define PPC_PTRACE_SETFPREGS 0x96 /* Set FPRs 0 - 31 */ -#define PPC_PTRACE_PEEKTEXT_3264 0x95 /* Read word at location ADDR on a 64-bit process from a 32-bit process. */ -#define PPC_PTRACE_PEEKDATA_3264 0x94 /* Read word at location ADDR on a 64-bit process from a 32-bit process. */ -#define PPC_PTRACE_POKETEXT_3264 0x93 /* Write word at location ADDR on a 64-bit process from a 32-bit process. */ -#define PPC_PTRACE_POKEDATA_3264 0x92 /* Write word at location ADDR on a 64-bit process from a 32-bit process. */ -#define PPC_PTRACE_PEEKUSR_3264 0x91 /* Read a register (specified by ADDR) out of the "user area" on a 64-bit process from a 32-bit process. */ -#define PPC_PTRACE_POKEUSR_3264 0x90 /* Write DATA into location ADDR within the "user area" on a 64-bit process from a 32-bit process. */ +/* + * While we dont have 64bit book E processors, we need to reserve the + * relevant ptrace calls for 32bit compatibility. + */ +#if 0 +#define PTRACE_GETEVRREGS 20 +#define PTRACE_SETEVRREGS 21 +#endif +/* Additional PTRACE requests implemented on PowerPC. */ +#define PPC_PTRACE_GETREGS 0x99 /* Get GPRs 0 - 31 */ +#define PPC_PTRACE_SETREGS 0x98 /* Set GPRs 0 - 31 */ +#define PPC_PTRACE_GETFPREGS 0x97 /* Get FPRs 0 - 31 */ +#define PPC_PTRACE_SETFPREGS 0x96 /* Set FPRs 0 - 31 */ + +/* Calls to trace a 64bit program from a 32bit program */ +#define PPC_PTRACE_PEEKTEXT_3264 0x95 +#define PPC_PTRACE_PEEKDATA_3264 0x94 +#define PPC_PTRACE_POKETEXT_3264 0x93 +#define PPC_PTRACE_POKEDATA_3264 0x92 +#define PPC_PTRACE_PEEKUSR_3264 0x91 +#define PPC_PTRACE_POKEUSR_3264 0x90 #endif /* _PPC64_PTRACE_H */ -- cgit v1.2.3 From a94d308513bdb2b926b45c11d7ce7fac6d6ca865 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Sat, 10 Sep 2005 16:01:10 +1000 Subject: [PATCH] ppc64: Add definitions for new PTRACE calls - Add PTRACE_GET_DEBUGREG/PTRACE_SET_DEBUGREG. The definition is as follows: /* * Get or set a debug register. The first 16 are DABR registers and the * second 16 are IABR registers. */ #define PTRACE_GET_DEBUGREG 25 #define PTRACE_SET_DEBUGREG 26 DABR == data breakpoint and IABR = instruction breakpoint in IBM speak. We could split out the IABR into 2 more ptrace calls but I figured there was no need and 16 DABR registers should be more than enough (POWER4/POWER5 have one). - Add 2 new SIGTRAP si_codes: TRAP_HWBKPT and TRAP_BRANCH. I couldnt find any standards on either of these so I copied what ia64 is doing. Again this might be better placed in include/asm-generic/siginfo.h Signed-off-by: Anton Blanchard Signed-off-by: Paul Mackerras --- include/asm-powerpc/siginfo.h | 8 ++++++++ include/asm-ppc/ptrace.h | 7 +++++++ include/asm-ppc64/ptrace.h | 7 +++++++ 3 files changed, 22 insertions(+) (limited to 'include') diff --git a/include/asm-powerpc/siginfo.h b/include/asm-powerpc/siginfo.h index 538ea8ef509b..12f1bce037be 100644 --- a/include/asm-powerpc/siginfo.h +++ b/include/asm-powerpc/siginfo.h @@ -15,4 +15,12 @@ #include +/* + * SIGTRAP si_codes + */ +#define TRAP_BRANCH (__SI_FAULT|3) /* process taken branch trap */ +#define TRAP_HWBKPT (__SI_FAULT|4) /* hardware breakpoint or watchpoint */ +#undef NSIGTRAP +#define NSIGTRAP 4 + #endif /* _ASM_POWERPC_SIGINFO_H */ diff --git a/include/asm-ppc/ptrace.h b/include/asm-ppc/ptrace.h index 9d4e4ea530c3..7043c164b537 100644 --- a/include/asm-ppc/ptrace.h +++ b/include/asm-ppc/ptrace.h @@ -142,4 +142,11 @@ do { \ #define PTRACE_GETEVRREGS 20 #define PTRACE_SETEVRREGS 21 +/* + * Get or set a debug register. The first 16 are DABR registers and the + * second 16 are IABR registers. + */ +#define PTRACE_GET_DEBUGREG 25 +#define PTRACE_SET_DEBUGREG 26 + #endif diff --git a/include/asm-ppc64/ptrace.h b/include/asm-ppc64/ptrace.h index a736000d7cf8..3a55377f1fd3 100644 --- a/include/asm-ppc64/ptrace.h +++ b/include/asm-ppc64/ptrace.h @@ -189,6 +189,13 @@ extern unsigned long profile_pc(struct pt_regs *regs); #define PTRACE_SETEVRREGS 21 #endif +/* + * Get or set a debug register. The first 16 are DABR registers and the + * second 16 are IABR registers. + */ +#define PTRACE_GET_DEBUGREG 25 +#define PTRACE_SET_DEBUGREG 26 + /* Additional PTRACE requests implemented on PowerPC. */ #define PPC_PTRACE_GETREGS 0x99 /* Get GPRs 0 - 31 */ #define PPC_PTRACE_SETREGS 0x98 /* Set GPRs 0 - 31 */ -- cgit v1.2.3 From fd9648dff6f9797ecc509bcd181706a274dc074d Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Sat, 10 Sep 2005 16:01:11 +1000 Subject: [PATCH] ppc64: Add ptrace data breakpoint support Add hardware data breakpoint support. Signed-off-by: Anton Blanchard Signed-off-by: Paul Mackerras --- include/asm-ppc64/hvcall.h | 6 ++++++ include/asm-ppc64/plpar_wrappers.h | 9 +++++++++ include/asm-ppc64/processor.h | 1 + include/asm-ppc64/ptrace-common.h | 20 ++++++++++++++++++++ include/asm-ppc64/system.h | 3 +++ 5 files changed, 39 insertions(+) (limited to 'include') diff --git a/include/asm-ppc64/hvcall.h b/include/asm-ppc64/hvcall.h index 4f668a4baff0..ab7c3cf24888 100644 --- a/include/asm-ppc64/hvcall.h +++ b/include/asm-ppc64/hvcall.h @@ -56,6 +56,11 @@ #define H_PP1 (1UL<<(63-62)) #define H_PP2 (1UL<<(63-63)) +/* DABRX flags */ +#define H_DABRX_HYPERVISOR (1UL<<(63-61)) +#define H_DABRX_KERNEL (1UL<<(63-62)) +#define H_DABRX_USER (1UL<<(63-63)) + /* pSeries hypervisor opcodes */ #define H_REMOVE 0x04 #define H_ENTER 0x08 @@ -101,6 +106,7 @@ #define H_VIO_SIGNAL 0x104 #define H_SEND_CRQ 0x108 #define H_COPY_RDMA 0x110 +#define H_SET_XDABR 0x134 #define H_STUFF_TCE 0x138 #define H_PUT_TCE_INDIRECT 0x13C #define H_VTERM_PARTNER_INFO 0x150 diff --git a/include/asm-ppc64/plpar_wrappers.h b/include/asm-ppc64/plpar_wrappers.h index f4a5fb7d67c7..72dd2449ee76 100644 --- a/include/asm-ppc64/plpar_wrappers.h +++ b/include/asm-ppc64/plpar_wrappers.h @@ -107,5 +107,14 @@ static inline long plpar_put_term_char(unsigned long termno, lbuf[1]); } +static inline long plpar_set_xdabr(unsigned long address, unsigned long flags) +{ + return plpar_hcall_norets(H_SET_XDABR, address, flags); +} + +static inline long plpar_set_dabr(unsigned long val) +{ + return plpar_hcall_norets(H_SET_DABR, val); +} #endif /* _PPC64_PLPAR_WRAPPERS_H */ diff --git a/include/asm-ppc64/processor.h b/include/asm-ppc64/processor.h index 8bd7aa959385..4146189006e3 100644 --- a/include/asm-ppc64/processor.h +++ b/include/asm-ppc64/processor.h @@ -433,6 +433,7 @@ struct thread_struct { unsigned long start_tb; /* Start purr when proc switched in */ unsigned long accum_tb; /* Total accumilated purr for process */ unsigned long vdso_base; /* base of the vDSO library */ + unsigned long dabr; /* Data address breakpoint register */ #ifdef CONFIG_ALTIVEC /* Complete AltiVec register set */ vector128 vr[32] __attribute((aligned(16))); diff --git a/include/asm-ppc64/ptrace-common.h b/include/asm-ppc64/ptrace-common.h index bd0f84c27bd0..b1babb729673 100644 --- a/include/asm-ppc64/ptrace-common.h +++ b/include/asm-ppc64/ptrace-common.h @@ -13,6 +13,7 @@ #define _PPC64_PTRACE_COMMON_H #include +#include /* * Set of msr bits that gdb can change on behalf of a process. @@ -141,4 +142,23 @@ static inline int set_vrregs(struct task_struct *task, } #endif +static inline int ptrace_set_debugreg(struct task_struct *task, + unsigned long addr, unsigned long data) +{ + /* We only support one DABR and no IABRS at the moment */ + if (addr > 0) + return -EINVAL; + + /* The bottom 3 bits are flags */ + if ((data & ~0x7UL) >= TASK_SIZE) + return -EIO; + + /* Ensure translation is on */ + if (data && !(data & DABR_TRANSLATION)) + return -EIO; + + task->thread.dabr = data; + return 0; +} + #endif /* _PPC64_PTRACE_COMMON_H */ diff --git a/include/asm-ppc64/system.h b/include/asm-ppc64/system.h index c0396428cc3c..375015c62f20 100644 --- a/include/asm-ppc64/system.h +++ b/include/asm-ppc64/system.h @@ -101,6 +101,9 @@ static inline int debugger_dabr_match(struct pt_regs *regs) { return 0; } static inline int debugger_fault_handler(struct pt_regs *regs) { return 0; } #endif +extern int set_dabr(unsigned long dabr); +extern void _exception(int signr, struct pt_regs *regs, int code, + unsigned long addr); extern int fix_alignment(struct pt_regs *regs); extern void bad_page_fault(struct pt_regs *regs, unsigned long address, int sig); -- cgit v1.2.3 From 2d909d08db7655a53f3afb31c7627c5c8c87142a Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 12 Sep 2005 13:19:51 +1000 Subject: [PATCH] ppc64: Remove unused code ppc64_attention_msg and ppc64_dump_msg are not used so remove them. Signed-off-by: Anton Blanchard Signed-off-by: Paul Mackerras --- include/asm-ppc64/machdep.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include') diff --git a/include/asm-ppc64/machdep.h b/include/asm-ppc64/machdep.h index 7b25738c111f..8027160ec96d 100644 --- a/include/asm-ppc64/machdep.h +++ b/include/asm-ppc64/machdep.h @@ -174,10 +174,6 @@ extern sys_ctrler_t sys_ctrler; void ppc64_boot_msg(unsigned int src, const char *msg); /* Print a termination message (print only -- does not stop the kernel) */ void ppc64_terminate_msg(unsigned int src, const char *msg); -/* Print something that needs attention (device error, etc) */ -void ppc64_attention_msg(unsigned int src, const char *msg); -/* Print a dump progress message. */ -void ppc64_dump_msg(unsigned int src, const char *msg); static inline void log_error(char *buf, unsigned int err_type, int fatal) { -- cgit v1.2.3 From f24ec7f6c6278c0ea4c00efe96d50b1e66796c44 Mon Sep 17 00:00:00 2001 From: Evgeniy Polyakov Date: Mon, 12 Sep 2005 17:12:43 +0400 Subject: [PATCH] crc16: remove w1 specific comments. Remove w1 comments from crc16.h and move specific constants into w1_ds2433.c where they are used. Replace %d with %zd. Signed-off-by: Evgeniy Polyakov Signed-off-by: Linus Torvalds --- include/linux/crc16.h | 16 +--------------- 1 file changed, 1 insertion(+), 15 deletions(-) (limited to 'include') diff --git a/include/linux/crc16.h b/include/linux/crc16.h index bdedf825b04a..9443c084f881 100644 --- a/include/linux/crc16.h +++ b/include/linux/crc16.h @@ -1,22 +1,11 @@ /* * crc16.h - CRC-16 routine * - * Implements the standard CRC-16, as used with 1-wire devices: + * Implements the standard CRC-16: * Width 16 * Poly 0x8005 (x^16 + x^15 + x^2 + 1) * Init 0 * - * For 1-wire devices, the CRC is stored inverted, LSB-first - * - * Example buffer with the CRC attached: - * 31 32 33 34 35 36 37 38 39 C2 44 - * - * The CRC over a buffer with the CRC attached is 0xB001. - * So, if (crc16(0, buf, size) == 0xB001) then the buffer is valid. - * - * Refer to "Application Note 937: Book of iButton Standards" for details. - * http://www.maxim-ic.com/appnotes.cfm/appnote_number/937 - * * Copyright (c) 2005 Ben Gardner * * This source code is licensed under the GNU General Public License, @@ -28,9 +17,6 @@ #include -#define CRC16_INIT 0 -#define CRC16_VALID 0xb001 - extern u16 const crc16_table[256]; extern u16 crc16(u16 crc, const u8 *buffer, size_t len); -- cgit v1.2.3 From b3426599af9524104be6938bcb1fcaab314781c7 Mon Sep 17 00:00:00 2001 From: Paul Jackson Date: Mon, 12 Sep 2005 04:30:30 -0700 Subject: [PATCH] cpuset semaphore depth check optimize Optimize the deadlock avoidance check on the global cpuset semaphore cpuset_sem. Instead of adding a depth counter to the task struct of each task, rather just two words are enough, one to store the depth and the other the current cpuset_sem holder. Thanks to Nikita Danilov for the idea. Signed-off-by: Paul Jackson [ We may want to change this further, but at least it's now a totally internal decision to the cpusets code ] Signed-off-by: Linus Torvalds --- include/linux/sched.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include') diff --git a/include/linux/sched.h b/include/linux/sched.h index ed3bb19d1337..38c8654aaa96 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -785,7 +785,6 @@ struct task_struct { short il_next; #endif #ifdef CONFIG_CPUSETS - short cpuset_sem_nest_depth; struct cpuset *cpuset; nodemask_t mems_allowed; int cpuset_mems_generation; -- cgit v1.2.3 From eddfb4ed290383abf912630fa8dac5acf65c9e55 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:23 +0200 Subject: [PATCH] x86-64: Remove obsolete APIC "write around" bug workaround No x86-64 chipset has this bug Generated code doesn't change because it was always disabled. Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/ipi.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/asm-x86_64/ipi.h b/include/asm-x86_64/ipi.h index 5e166b9d3bde..7ba668f43c59 100644 --- a/include/asm-x86_64/ipi.h +++ b/include/asm-x86_64/ipi.h @@ -66,7 +66,7 @@ static inline void __send_IPI_shortcut(unsigned int shortcut, int vector, unsign /* * Send the IPI. The write to APIC_ICR fires this off. */ - apic_write_around(APIC_ICR, cfg); + apic_write(APIC_ICR, cfg); } @@ -92,7 +92,7 @@ static inline void send_IPI_mask_sequence(cpumask_t mask, int vector) * prepare target chip field */ cfg = __prepare_ICR2(x86_cpu_to_apicid[query_cpu]); - apic_write_around(APIC_ICR2, cfg); + apic_write(APIC_ICR2, cfg); /* * program the ICR @@ -102,7 +102,7 @@ static inline void send_IPI_mask_sequence(cpumask_t mask, int vector) /* * Send the IPI. The write to APIC_ICR fires this off. */ - apic_write_around(APIC_ICR, cfg); + apic_write(APIC_ICR, cfg); } local_irq_restore(flags); } -- cgit v1.2.3 From 61c11341ed798db9b99b30c1711c1cf458457806 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:23 +0200 Subject: [PATCH] x86-64: Remove esr disable hack in APIC code This was just needed for the Numasaurus, which fortunately doesn't support x86-64 CPUs. Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/apic.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include') diff --git a/include/asm-x86_64/apic.h b/include/asm-x86_64/apic.h index 16ec82e16b21..1559d78894ac 100644 --- a/include/asm-x86_64/apic.h +++ b/include/asm-x86_64/apic.h @@ -111,7 +111,6 @@ extern unsigned int nmi_watchdog; #endif /* CONFIG_X86_LOCAL_APIC */ -#define esr_disable 0 extern unsigned boot_cpu_id; #endif /* __ASM_APIC_H */ -- cgit v1.2.3 From 0b07e984fc7a51b1a7c75e1bfdcf59d1ad065353 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Don't assign CPU numbers in SRAT parsing Do that later when the CPU boots. SRAT just stores the APIC<->Node mapping node. This fixes problems on systems where the order of SRAT entries does not match the MADT. Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/numa.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/asm-x86_64/numa.h b/include/asm-x86_64/numa.h index 5c363a1482e4..3aaf70027213 100644 --- a/include/asm-x86_64/numa.h +++ b/include/asm-x86_64/numa.h @@ -16,6 +16,8 @@ extern void numa_add_cpu(int cpu); extern void numa_init_array(void); extern int numa_off; +extern unsigned char apicid_to_node[256]; + #define NUMA_NO_NODE 0xff #endif -- cgit v1.2.3 From b91691164be174b780f5c1bb145a7ab5d33fce2f Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Don't cache align PDA on UP builds Suggested by someone I forgot who sorry. Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/pda.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/asm-x86_64/pda.h b/include/asm-x86_64/pda.h index 36b766cfc4d5..e16d76c9deb0 100644 --- a/include/asm-x86_64/pda.h +++ b/include/asm-x86_64/pda.h @@ -22,7 +22,7 @@ struct x8664_pda { struct mm_struct *active_mm; int mmu_state; unsigned apic_timer_irqs; -} ____cacheline_aligned; +} ____cacheline_aligned_in_smp; #define IRQSTACK_ORDER 2 -- cgit v1.2.3 From 3f098c2605bdf50176b26f4fa724e9b9c99e5242 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Support dualcore and 8 socket systems in k8 fallback node parsing In particular on systems where the local APIC space and node space is very different from the Linux CPU number space. Previously the older NUMA setup code directly parsing the K8 northbridge registers had some issues on 8 socket or dual core systems. This patch fixes them. This is mainly done by fixing some confusion between Linux CPU numbers and local APIC ids. We now pass the local APIC IDs to later code, which avoids mismatches. Also add some heuristics to detect cases where the Hypertransport nodeids and the local APIC IDs don't match, but are shifted by a constant offset. This is still all quite hackish, hopefully BIOS writers fill in correct SRATs instead. Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/apicdef.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/asm-x86_64/apicdef.h b/include/asm-x86_64/apicdef.h index 9388062c4f6e..fb1c99ac669f 100644 --- a/include/asm-x86_64/apicdef.h +++ b/include/asm-x86_64/apicdef.h @@ -113,6 +113,7 @@ #define APIC_BASE (fix_to_virt(FIX_APIC_BASE)) #define MAX_IO_APICS 128 +#define MAX_LOCAL_APIC 256 /* * All x86-64 systems are xAPIC compatible. -- cgit v1.2.3 From 6142891a0c0209c91aa4a98f725de0d6e2ed4918 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Avoid unnecessary double bouncing for swiotlb PCI_DMA_BUS_IS_PHYS has to be zero even when the GART IOMMU is disabled and the swiotlb is used. Otherwise the block layer does unnecessary double bouncing. Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/pci.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/asm-x86_64/pci.h b/include/asm-x86_64/pci.h index eeb3088a1c9e..5a82a6762c21 100644 --- a/include/asm-x86_64/pci.h +++ b/include/asm-x86_64/pci.h @@ -50,10 +50,10 @@ extern int iommu_setup(char *opt); * address space. The networking and block device layers use * this boolean for bounce buffer decisions * - * On AMD64 it mostly equals, but we set it to zero to tell some subsystems - * that an IOMMU is available. + * On x86-64 it mostly equals, but we set it to zero to tell some subsystems + * that an hard or soft IOMMU is available. */ -#define PCI_DMA_BUS_IS_PHYS (no_iommu ? 1 : 0) +#define PCI_DMA_BUS_IS_PHYS 0 /* * x86-64 always supports DAC, but sometimes it is useful to force -- cgit v1.2.3 From b9aac10dddd927f0b9cfcca19a272ded87015574 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Remove redundant max_mapnr and replace with end_pfn The FLATMEM people added it, but there doesn't seem a good reason because end_pfn is identical. Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/page.h | 4 +++- include/asm-x86_64/proto.h | 2 -- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/asm-x86_64/page.h b/include/asm-x86_64/page.h index 135ffaa0393b..e5ab4d231f2c 100644 --- a/include/asm-x86_64/page.h +++ b/include/asm-x86_64/page.h @@ -32,6 +32,8 @@ #ifdef __KERNEL__ #ifndef __ASSEMBLY__ +extern unsigned long end_pfn; + void clear_page(void *); void copy_page(void *, void *); @@ -111,7 +113,7 @@ typedef struct { unsigned long pgprot; } pgprot_t; #ifdef CONFIG_FLATMEM #define pfn_to_page(pfn) (mem_map + (pfn)) #define page_to_pfn(page) ((unsigned long)((page) - mem_map)) -#define pfn_valid(pfn) ((pfn) < max_mapnr) +#define pfn_valid(pfn) ((pfn) < end_pfn) #endif #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) diff --git a/include/asm-x86_64/proto.h b/include/asm-x86_64/proto.h index f7574196424e..764b5f822ce2 100644 --- a/include/asm-x86_64/proto.h +++ b/include/asm-x86_64/proto.h @@ -93,8 +93,6 @@ extern int unhandled_signal(struct task_struct *tsk, int sig); extern void select_idle_routine(const struct cpuinfo_x86 *c); extern void swiotlb_init(void); -extern unsigned long max_mapnr; -extern unsigned long end_pfn; extern unsigned long table_start, table_end; extern int exception_trace; -- cgit v1.2.3 From 69e1a33f62eff9b228a8cc2c3e4429dbee8966c9 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Use ACPI PXM to parse PCI<->node assignments Since this is shared code I had to implement it for i386 too Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-i386/numa.h | 3 +++ include/asm-i386/topology.h | 2 +- include/asm-x86_64/numa.h | 1 + include/asm-x86_64/topology.h | 3 +-- 4 files changed, 6 insertions(+), 3 deletions(-) create mode 100644 include/asm-i386/numa.h (limited to 'include') diff --git a/include/asm-i386/numa.h b/include/asm-i386/numa.h new file mode 100644 index 000000000000..96fcb157db1d --- /dev/null +++ b/include/asm-i386/numa.h @@ -0,0 +1,3 @@ + +int pxm_to_nid(int pxm); + diff --git a/include/asm-i386/topology.h b/include/asm-i386/topology.h index 2461b731781e..0ec27c9e8e45 100644 --- a/include/asm-i386/topology.h +++ b/include/asm-i386/topology.h @@ -60,7 +60,7 @@ static inline int node_to_first_cpu(int node) return first_cpu(mask); } -#define pcibus_to_node(bus) mp_bus_id_to_node[(bus)->number] +#define pcibus_to_node(bus) ((long) (bus)->sysdata) #define pcibus_to_cpumask(bus) node_to_cpumask(pcibus_to_node(bus)) /* sched_domains SD_NODE_INIT for NUMAQ machines */ diff --git a/include/asm-x86_64/numa.h b/include/asm-x86_64/numa.h index 3aaf70027213..bcf55c3f7f7f 100644 --- a/include/asm-x86_64/numa.h +++ b/include/asm-x86_64/numa.h @@ -9,6 +9,7 @@ struct node { }; extern int compute_hash_shift(struct node *nodes, int numnodes); +extern int pxm_to_node(int nid); #define ZONE_ALIGN (1UL << (MAX_ORDER+PAGE_SHIFT)) diff --git a/include/asm-x86_64/topology.h b/include/asm-x86_64/topology.h index c1bc3fad482e..1c603cd7e4d0 100644 --- a/include/asm-x86_64/topology.h +++ b/include/asm-x86_64/topology.h @@ -13,7 +13,6 @@ extern cpumask_t cpu_online_map; extern unsigned char cpu_to_node[]; -extern unsigned char pci_bus_to_node[]; extern cpumask_t node_to_cpumask[]; #ifdef CONFIG_ACPI_NUMA @@ -26,7 +25,7 @@ extern int __node_distance(int, int); #define parent_node(node) (node) #define node_to_first_cpu(node) (__ffs(node_to_cpumask[node])) #define node_to_cpumask(node) (node_to_cpumask[node]) -#define pcibus_to_node(bus) pci_bus_to_node[(bus)->number] +#define pcibus_to_node(bus) ((long)(bus->sysdata)) #define pcibus_to_cpumask(bus) node_to_cpumask(pcibus_to_node(bus)); /* sched_domains SD_NODE_INIT for x86_64 machines */ -- cgit v1.2.3 From e5bc8b6baf86538f3d0407cf0880f86aec828a13 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Make remote TLB flush more scalable Instead of using a global spinlock to protect the state of the remote TLB flush use a lock and state for each sending CPU. To tell the receiver where to look for the state use 8 different call vectors. Each CPU uses a specific vector to trigger flushes on other CPUs. Depending on the received vector the target CPUs look into the right per cpu variable for the flush data. When the system has more than 8 CPUs they are hashed to the 8 available vectors. The limited global vector space forces us to this right now. In future when interrupts are split into per CPU domains this could be fixed, at the cost of needing more IPIs in flat mode. Also some minor cleanup in the smp flush code and remove some outdated debug code. Requires patch to move cpu_possible_map setup earlier. Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/hw_irq.h | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) (limited to 'include') diff --git a/include/asm-x86_64/hw_irq.h b/include/asm-x86_64/hw_irq.h index 2b5cb2865d21..d9212eb4e894 100644 --- a/include/asm-x86_64/hw_irq.h +++ b/include/asm-x86_64/hw_irq.h @@ -50,14 +50,15 @@ struct hw_interrupt_type; */ #define SPURIOUS_APIC_VECTOR 0xff #define ERROR_APIC_VECTOR 0xfe -#define INVALIDATE_TLB_VECTOR 0xfd -#define RESCHEDULE_VECTOR 0xfc -#define TASK_MIGRATION_VECTOR 0xfb -#define CALL_FUNCTION_VECTOR 0xfa -#define KDB_VECTOR 0xf9 - -#define THERMAL_APIC_VECTOR 0xf0 - +#define RESCHEDULE_VECTOR 0xfd +#define CALL_FUNCTION_VECTOR 0xfc +#define KDB_VECTOR 0xfb /* reserved for KDB */ +#define THERMAL_APIC_VECTOR 0xfa +/* 0xf9 free */ +#define INVALIDATE_TLB_VECTOR_END 0xf8 +#define INVALIDATE_TLB_VECTOR_START 0xf0 /* f0-f8 used for TLB flush */ + +#define NUM_INVALIDATE_TLB_VECTORS 8 /* * Local APIC timer IRQ vector is on a different priority level, -- cgit v1.2.3 From 3f74478b5fd7263e9311cdb320923d599c73a792 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Some cleanup and optimization to the processor data area. - Remove unused irqrsp field - Remove pda->me - Optimize set_softirq_pending slightly Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/hardirq.h | 9 +++++---- include/asm-x86_64/pda.h | 12 ++++++------ include/linux/interrupt.h | 7 ++++++- 3 files changed, 17 insertions(+), 11 deletions(-) (limited to 'include') diff --git a/include/asm-x86_64/hardirq.h b/include/asm-x86_64/hardirq.h index 27c381fa1c9d..8661b476fb40 100644 --- a/include/asm-x86_64/hardirq.h +++ b/include/asm-x86_64/hardirq.h @@ -9,11 +9,12 @@ #define __ARCH_IRQ_STAT 1 -/* Generate a lvalue for a pda member. Should fix softirq.c instead to use - special access macros. This would generate better code. */ -#define __IRQ_STAT(cpu,member) (read_pda(me)->member) +#define local_softirq_pending() read_pda(__softirq_pending) -#include /* Standard mappings for irq_cpustat_t above */ +#define __ARCH_SET_SOFTIRQ_PENDING 1 + +#define set_softirq_pending(x) write_pda(__softirq_pending, (x)) +#define or_softirq_pending(x) or_pda(__softirq_pending, (x)) /* * 'what should we do if we get a hw irq event on an illegal vector'. diff --git a/include/asm-x86_64/pda.h b/include/asm-x86_64/pda.h index e16d76c9deb0..bbf89aa8a1af 100644 --- a/include/asm-x86_64/pda.h +++ b/include/asm-x86_64/pda.h @@ -10,10 +10,8 @@ struct x8664_pda { struct task_struct *pcurrent; /* Current process */ unsigned long data_offset; /* Per cpu data offset from linker address */ - struct x8664_pda *me; /* Pointer to itself */ unsigned long kernelstack; /* top of kernel stack for current */ unsigned long oldrsp; /* user rsp for system call */ - unsigned long irqrsp; /* Old rsp for interrupts. */ int irqcount; /* Irq nesting counter. Starts with -1 */ int cpunumber; /* Logical CPU number */ char *irqstackptr; /* top of irqstack */ @@ -42,13 +40,14 @@ extern void __bad_pda_field(void); #define pda_offset(field) offsetof(struct x8664_pda, field) #define pda_to_op(op,field,val) do { \ + typedef typeof_field(struct x8664_pda, field) T__; \ switch (sizeof_field(struct x8664_pda, field)) { \ case 2: \ -asm volatile(op "w %0,%%gs:%P1"::"r" (val),"i"(pda_offset(field)):"memory"); break; \ +asm volatile(op "w %0,%%gs:%P1"::"ri" ((T__)val),"i"(pda_offset(field)):"memory"); break; \ case 4: \ -asm volatile(op "l %0,%%gs:%P1"::"r" (val),"i"(pda_offset(field)):"memory"); break; \ +asm volatile(op "l %0,%%gs:%P1"::"ri" ((T__)val),"i"(pda_offset(field)):"memory"); break; \ case 8: \ -asm volatile(op "q %0,%%gs:%P1"::"r" (val),"i"(pda_offset(field)):"memory"); break; \ +asm volatile(op "q %0,%%gs:%P1"::"ri" ((T__)val),"i"(pda_offset(field)):"memory"); break; \ default: __bad_pda_field(); \ } \ } while (0) @@ -58,7 +57,7 @@ asm volatile(op "q %0,%%gs:%P1"::"r" (val),"i"(pda_offset(field)):"memory"); bre * Unfortunately removing them causes all hell to break lose currently. */ #define pda_from_op(op,field) ({ \ - typedef typeof_field(struct x8664_pda, field) T__; T__ ret__; \ + typeof_field(struct x8664_pda, field) ret__; \ switch (sizeof_field(struct x8664_pda, field)) { \ case 2: \ asm volatile(op "w %%gs:%P1,%0":"=r" (ret__):"i"(pda_offset(field)):"memory"); break;\ @@ -75,6 +74,7 @@ asm volatile(op "q %%gs:%P1,%0":"=r" (ret__):"i"(pda_offset(field)):"memory"); b #define write_pda(field,val) pda_to_op("mov",field,val) #define add_pda(field,val) pda_to_op("add",field,val) #define sub_pda(field,val) pda_to_op("sub",field,val) +#define or_pda(field,val) pda_to_op("or",field,val) #endif diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index d99e7aeb7d33..0a90205184b0 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -57,6 +57,11 @@ extern void disable_irq(unsigned int irq); extern void enable_irq(unsigned int irq); #endif +#ifndef __ARCH_SET_SOFTIRQ_PENDING +#define set_softirq_pending(x) (local_softirq_pending() = (x)) +#define or_softirq_pending(x) (local_softirq_pending() |= (x)) +#endif + /* * Temporary defines for UP kernels, until all code gets fixed. */ @@ -123,7 +128,7 @@ struct softirq_action asmlinkage void do_softirq(void); extern void open_softirq(int nr, void (*action)(struct softirq_action*), void *data); extern void softirq_init(void); -#define __raise_softirq_irqoff(nr) do { local_softirq_pending() |= 1UL << (nr); } while (0) +#define __raise_softirq_irqoff(nr) do { or_softirq_pending(1UL << (nr)); } while (0) extern void FASTCALL(raise_softirq_irqoff(unsigned int nr)); extern void FASTCALL(raise_softirq(unsigned int nr)); -- cgit v1.2.3 From 165aeb82848c81ee1774f8defc74df4341e9184b Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Don't include config.h in asm/timex.h asm-x86-64/timex.h does not reference CONFIG constants. Do not need to include config.h. Signed-off-by: Grant Grundler Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/timex.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include') diff --git a/include/asm-x86_64/timex.h b/include/asm-x86_64/timex.h index 24ecf6a637cb..f971f45d6d78 100644 --- a/include/asm-x86_64/timex.h +++ b/include/asm-x86_64/timex.h @@ -6,7 +6,6 @@ #ifndef _ASMx8664_TIMEX_H #define _ASMx8664_TIMEX_H -#include #include #include #include -- cgit v1.2.3 From 2b4a08150e0ce2f6eb5d0987fdfe3524ec799313 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Increase TLB flush array size The generic TLB flush functions kept upto 506 pages per CPU to avoid too frequent IPIs. This value was done for the L1 cache of older x86 CPUs, but with modern CPUs it does not make much sense anymore. TLB flushing is slow enough that using the L2 cache is fine. This patch increases the flush array on x86-64 to cache 5350 pages. That is roughly 20MB with 4K pages. It speeds up large munmaps in multithreaded processes on SMP considerably. The cost is roughly 42k of memory per CPU, which is reasonable. I only increased it on x86-64 for now, but it would probably make sense to increase it everywhere. Embedded architectures with SMP may keep it smaller to save some memory per CPU. Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-generic/tlb.h | 6 +++++- include/asm-x86_64/tlbflush.h | 4 ++++ 2 files changed, 9 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/asm-generic/tlb.h b/include/asm-generic/tlb.h index faff403e1061..7d0298347ee7 100644 --- a/include/asm-generic/tlb.h +++ b/include/asm-generic/tlb.h @@ -23,7 +23,11 @@ * and page free order so much.. */ #ifdef CONFIG_SMP - #define FREE_PTE_NR 506 + #ifdef ARCH_FREE_PTR_NR + #define FREE_PTR_NR ARCH_FREE_PTR_NR + #else + #define FREE_PTE_NR 506 + #endif #define tlb_fast_mode(tlb) ((tlb)->nr == ~0U) #else #define FREE_PTE_NR 1 diff --git a/include/asm-x86_64/tlbflush.h b/include/asm-x86_64/tlbflush.h index 505b0cf906de..4a9c20ea9b10 100644 --- a/include/asm-x86_64/tlbflush.h +++ b/include/asm-x86_64/tlbflush.h @@ -109,6 +109,10 @@ static inline void flush_tlb_range(struct vm_area_struct * vma, unsigned long st #define TLBSTATE_OK 1 #define TLBSTATE_LAZY 2 +/* Roughly an IPI every 20MB with 4k pages for freeing page table + ranges. Cost is about 42k of memory for each CPU. */ +#define ARCH_FREE_PTE_NR 5350 + #endif #define flush_tlb_kernel_range(start, end) flush_tlb_all() -- cgit v1.2.3 From 6e44f12ba64a58f25f8e6f35aa4c175f613001be Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] i386: add memory clobbers to syscall macros As noted by matz@suse.de The problem is, that on i386 the syscallN macro is defined like so: long __res; \ __asm__ volatile ("int $0x80" \ : "=a" (__res) \ : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \ "d" ((long)(arg3)),"S" ((long)(arg4)),"D" ((long)(arg5))); \ If one of the arguments (in the _llseek syscall it's the arg4) is a pointer which the syscall is expected to write to (to the memory pointed to by this ptr), then this side-effect is not captured in the asm. If anyone uses this macro to define it's own version of the syscall (sometimes necessary when not using glibc) and it's inlined, then GCC doesn't know that this asm write to "*dest", when called like so for instance: out = 1; llseek (fd, bla, blubb, &out, trara) use (out); Here nobody tells GCC that "out" actually is written to (just a pointer to it is passed to the asm). Hence GCC might (and in the above bug did) copy-propagate "1" into the second use of "out". The easiest solution would be to add a "memory" clobber to the definition of this syscall macro. As this is a syscall, it shouldn't inhibit too many optimizations. Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-i386/unistd.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'include') diff --git a/include/asm-i386/unistd.h b/include/asm-i386/unistd.h index a7cb377745bf..fbaf90a3968c 100644 --- a/include/asm-i386/unistd.h +++ b/include/asm-i386/unistd.h @@ -332,7 +332,7 @@ type name(type1 arg1) \ long __res; \ __asm__ volatile ("int $0x80" \ : "=a" (__res) \ - : "0" (__NR_##name),"b" ((long)(arg1))); \ + : "0" (__NR_##name),"b" ((long)(arg1)) : "memory"); \ __syscall_return(type,__res); \ } @@ -342,7 +342,7 @@ type name(type1 arg1,type2 arg2) \ long __res; \ __asm__ volatile ("int $0x80" \ : "=a" (__res) \ - : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2))); \ + : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)) : "memory"); \ __syscall_return(type,__res); \ } @@ -353,7 +353,7 @@ long __res; \ __asm__ volatile ("int $0x80" \ : "=a" (__res) \ : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \ - "d" ((long)(arg3))); \ + "d" ((long)(arg3)) : "memory"); \ __syscall_return(type,__res); \ } @@ -364,7 +364,7 @@ long __res; \ __asm__ volatile ("int $0x80" \ : "=a" (__res) \ : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \ - "d" ((long)(arg3)),"S" ((long)(arg4))); \ + "d" ((long)(arg3)),"S" ((long)(arg4)) : "memory"); \ __syscall_return(type,__res); \ } @@ -376,7 +376,7 @@ long __res; \ __asm__ volatile ("int $0x80" \ : "=a" (__res) \ : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \ - "d" ((long)(arg3)),"S" ((long)(arg4)),"D" ((long)(arg5))); \ + "d" ((long)(arg3)),"S" ((long)(arg4)),"D" ((long)(arg5)) : "memory"); \ __syscall_return(type,__res); \ } @@ -389,7 +389,7 @@ __asm__ volatile ("push %%ebp ; movl %%eax,%%ebp ; movl %1,%%eax ; int $0x80 ; p : "=a" (__res) \ : "i" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \ "d" ((long)(arg3)),"S" ((long)(arg4)),"D" ((long)(arg5)), \ - "0" ((long)(arg6))); \ + "0" ((long)(arg6)) : "memory"); \ __syscall_return(type,__res); \ } -- cgit v1.2.3 From fb048927ad93420b6dd2eddcdde71ea7b6ff95e4 Mon Sep 17 00:00:00 2001 From: Jim Paradis Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Fix off by one in pfn_valid When I gave proposed the fix to pfn_valid() for RHEL4, Stephen Tweedie's sharp eyes caught this: Signed-off-by: Linus Torvalds --- include/asm-x86_64/mmzone.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/asm-x86_64/mmzone.h b/include/asm-x86_64/mmzone.h index 768413751b34..2ef43dac6c28 100644 --- a/include/asm-x86_64/mmzone.h +++ b/include/asm-x86_64/mmzone.h @@ -54,7 +54,7 @@ static inline __attribute__((pure)) int phys_to_nid(unsigned long addr) #define pfn_valid(pfn) ((pfn) >= num_physpages ? 0 : \ ({ u8 nid__ = pfn_to_nid(pfn); \ - nid__ != 0xff && (pfn) >= node_start_pfn(nid__) && (pfn) <= node_end_pfn(nid__); })) + nid__ != 0xff && (pfn) >= node_start_pfn(nid__) && (pfn) < node_end_pfn(nid__); })) #endif #define local_mapnr(kvaddr) \ -- cgit v1.2.3 From f297e4e5e4245a5c3fb36e7f754cde96cdb4bc43 Mon Sep 17 00:00:00 2001 From: Nakul Saraiya Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] Increase nodemap hash. Needed for some newer Opteron systems with E stepping and memory relocation enabled. The node addresses are different in lower bits now so the nodemap hash function needs to be enlarged. Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/mmzone.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/asm-x86_64/mmzone.h b/include/asm-x86_64/mmzone.h index 2ef43dac6c28..b40c661f111e 100644 --- a/include/asm-x86_64/mmzone.h +++ b/include/asm-x86_64/mmzone.h @@ -12,7 +12,7 @@ #include -#define NODEMAPSIZE 0xff +#define NODEMAPSIZE 0xfff /* Simple perfect hash to map physical addresses to node numbers */ extern int memnode_shift; -- cgit v1.2.3 From 9c0aa0f9a16557a3dd9b7b0d39bc67ddf1fa0b32 Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] Replace extern inline with static inline in asm-x86_64/* They should be identical in the kernel now, but this makes it consistent with other code. Signed-off-by: Adrian Bunk Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/desc.h | 2 +- include/asm-x86_64/fixmap.h | 2 +- include/asm-x86_64/io.h | 14 +++++++------- include/asm-x86_64/msr.h | 10 +++++----- include/asm-x86_64/pgalloc.h | 8 ++++---- include/asm-x86_64/pgtable.h | 6 +++--- include/asm-x86_64/processor.h | 4 ++-- include/asm-x86_64/signal.h | 10 +++++----- include/asm-x86_64/smp.h | 2 +- include/asm-x86_64/system.h | 2 +- 10 files changed, 30 insertions(+), 30 deletions(-) (limited to 'include') diff --git a/include/asm-x86_64/desc.h b/include/asm-x86_64/desc.h index c89b58bebee2..594e610f4a1e 100644 --- a/include/asm-x86_64/desc.h +++ b/include/asm-x86_64/desc.h @@ -191,7 +191,7 @@ static inline void load_TLS(struct thread_struct *t, unsigned int cpu) /* * load one particular LDT into the current CPU */ -extern inline void load_LDT_nolock (mm_context_t *pc, int cpu) +static inline void load_LDT_nolock (mm_context_t *pc, int cpu) { int count = pc->size; diff --git a/include/asm-x86_64/fixmap.h b/include/asm-x86_64/fixmap.h index cf8b16cbe8db..a582cfcf2231 100644 --- a/include/asm-x86_64/fixmap.h +++ b/include/asm-x86_64/fixmap.h @@ -76,7 +76,7 @@ extern void __this_fixmap_does_not_exist(void); * directly without translation, we catch the bug with a NULL-deference * kernel oops. Illegal ranges of incoming indices are caught too. */ -extern inline unsigned long fix_to_virt(const unsigned int idx) +static inline unsigned long fix_to_virt(const unsigned int idx) { /* * this branch gets completely eliminated after inlining, diff --git a/include/asm-x86_64/io.h b/include/asm-x86_64/io.h index 37fc3f149a5a..52ff269fe054 100644 --- a/include/asm-x86_64/io.h +++ b/include/asm-x86_64/io.h @@ -48,7 +48,7 @@ * Talk about misusing macros.. */ #define __OUT1(s,x) \ -extern inline void out##s(unsigned x value, unsigned short port) { +static inline void out##s(unsigned x value, unsigned short port) { #define __OUT2(s,s1,s2) \ __asm__ __volatile__ ("out" #s " %" s1 "0,%" s2 "1" @@ -58,7 +58,7 @@ __OUT1(s,x) __OUT2(s,s1,"w") : : "a" (value), "Nd" (port)); } \ __OUT1(s##_p,x) __OUT2(s,s1,"w") __FULL_SLOW_DOWN_IO : : "a" (value), "Nd" (port));} \ #define __IN1(s) \ -extern inline RETURN_TYPE in##s(unsigned short port) { RETURN_TYPE _v; +static inline RETURN_TYPE in##s(unsigned short port) { RETURN_TYPE _v; #define __IN2(s,s1,s2) \ __asm__ __volatile__ ("in" #s " %" s2 "1,%" s1 "0" @@ -68,12 +68,12 @@ __IN1(s) __IN2(s,s1,"w") : "=a" (_v) : "Nd" (port) ,##i ); return _v; } \ __IN1(s##_p) __IN2(s,s1,"w") __FULL_SLOW_DOWN_IO : "=a" (_v) : "Nd" (port) ,##i ); return _v; } \ #define __INS(s) \ -extern inline void ins##s(unsigned short port, void * addr, unsigned long count) \ +static inline void ins##s(unsigned short port, void * addr, unsigned long count) \ { __asm__ __volatile__ ("rep ; ins" #s \ : "=D" (addr), "=c" (count) : "d" (port),"0" (addr),"1" (count)); } #define __OUTS(s) \ -extern inline void outs##s(unsigned short port, const void * addr, unsigned long count) \ +static inline void outs##s(unsigned short port, const void * addr, unsigned long count) \ { __asm__ __volatile__ ("rep ; outs" #s \ : "=S" (addr), "=c" (count) : "d" (port),"0" (addr),"1" (count)); } @@ -110,12 +110,12 @@ __OUTS(l) * Change virtual addresses to physical addresses and vv. * These are pretty trivial */ -extern inline unsigned long virt_to_phys(volatile void * address) +static inline unsigned long virt_to_phys(volatile void * address) { return __pa(address); } -extern inline void * phys_to_virt(unsigned long address) +static inline void * phys_to_virt(unsigned long address) { return __va(address); } @@ -130,7 +130,7 @@ extern inline void * phys_to_virt(unsigned long address) extern void __iomem *__ioremap(unsigned long offset, unsigned long size, unsigned long flags); -extern inline void __iomem * ioremap (unsigned long offset, unsigned long size) +static inline void __iomem * ioremap (unsigned long offset, unsigned long size) { return __ioremap(offset, size, 0); } diff --git a/include/asm-x86_64/msr.h b/include/asm-x86_64/msr.h index ba15279a79d0..15a6ef7cf3d3 100644 --- a/include/asm-x86_64/msr.h +++ b/include/asm-x86_64/msr.h @@ -64,7 +64,7 @@ : "=a" (low), "=d" (high) \ : "c" (counter)) -extern inline void cpuid(int op, unsigned int *eax, unsigned int *ebx, +static inline void cpuid(int op, unsigned int *eax, unsigned int *ebx, unsigned int *ecx, unsigned int *edx) { __asm__("cpuid" @@ -90,7 +90,7 @@ static inline void cpuid_count(int op, int count, int *eax, int *ebx, int *ecx, /* * CPUID functions returning a single datum */ -extern inline unsigned int cpuid_eax(unsigned int op) +static inline unsigned int cpuid_eax(unsigned int op) { unsigned int eax; @@ -100,7 +100,7 @@ extern inline unsigned int cpuid_eax(unsigned int op) : "bx", "cx", "dx"); return eax; } -extern inline unsigned int cpuid_ebx(unsigned int op) +static inline unsigned int cpuid_ebx(unsigned int op) { unsigned int eax, ebx; @@ -110,7 +110,7 @@ extern inline unsigned int cpuid_ebx(unsigned int op) : "cx", "dx" ); return ebx; } -extern inline unsigned int cpuid_ecx(unsigned int op) +static inline unsigned int cpuid_ecx(unsigned int op) { unsigned int eax, ecx; @@ -120,7 +120,7 @@ extern inline unsigned int cpuid_ecx(unsigned int op) : "bx", "dx" ); return ecx; } -extern inline unsigned int cpuid_edx(unsigned int op) +static inline unsigned int cpuid_edx(unsigned int op) { unsigned int eax, edx; diff --git a/include/asm-x86_64/pgalloc.h b/include/asm-x86_64/pgalloc.h index deadd146978b..08cad2482bcb 100644 --- a/include/asm-x86_64/pgalloc.h +++ b/include/asm-x86_64/pgalloc.h @@ -18,12 +18,12 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *p set_pmd(pmd, __pmd(_PAGE_TABLE | (page_to_pfn(pte) << PAGE_SHIFT))); } -extern __inline__ pmd_t *get_pmd(void) +static inline pmd_t *get_pmd(void) { return (pmd_t *)get_zeroed_page(GFP_KERNEL); } -extern __inline__ void pmd_free(pmd_t *pmd) +static inline void pmd_free(pmd_t *pmd) { BUG_ON((unsigned long)pmd & (PAGE_SIZE-1)); free_page((unsigned long)pmd); @@ -86,13 +86,13 @@ static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long add /* Should really implement gc for free page table pages. This could be done with a reference count in struct page. */ -extern __inline__ void pte_free_kernel(pte_t *pte) +static inline void pte_free_kernel(pte_t *pte) { BUG_ON((unsigned long)pte & (PAGE_SIZE-1)); free_page((unsigned long)pte); } -extern inline void pte_free(struct page *pte) +static inline void pte_free(struct page *pte) { __free_page(pte); } diff --git a/include/asm-x86_64/pgtable.h b/include/asm-x86_64/pgtable.h index 5e0f2fdab0d3..1dc110ba82d6 100644 --- a/include/asm-x86_64/pgtable.h +++ b/include/asm-x86_64/pgtable.h @@ -85,7 +85,7 @@ static inline void set_pud(pud_t *dst, pud_t val) pud_val(*dst) = pud_val(val); } -extern inline void pud_clear (pud_t *pud) +static inline void pud_clear (pud_t *pud) { set_pud(pud, __pud(0)); } @@ -95,7 +95,7 @@ static inline void set_pgd(pgd_t *dst, pgd_t val) pgd_val(*dst) = pgd_val(val); } -extern inline void pgd_clear (pgd_t * pgd) +static inline void pgd_clear (pgd_t * pgd) { set_pgd(pgd, __pgd(0)); } @@ -375,7 +375,7 @@ static inline pte_t mk_pte_phys(unsigned long physpage, pgprot_t pgprot) } /* Change flags of a PTE */ -extern inline pte_t pte_modify(pte_t pte, pgprot_t newprot) +static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) { pte_val(pte) &= _PAGE_CHG_MASK; pte_val(pte) |= pgprot_val(newprot); diff --git a/include/asm-x86_64/processor.h b/include/asm-x86_64/processor.h index a8321999448f..c6461c16edbf 100644 --- a/include/asm-x86_64/processor.h +++ b/include/asm-x86_64/processor.h @@ -375,13 +375,13 @@ struct extended_sigtable { #define ASM_NOP_MAX 8 /* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */ -extern inline void rep_nop(void) +static inline void rep_nop(void) { __asm__ __volatile__("rep;nop": : :"memory"); } /* Stop speculative execution */ -extern inline void sync_core(void) +static inline void sync_core(void) { int tmp; asm volatile("cpuid" : "=a" (tmp) : "0" (1) : "ebx","ecx","edx","memory"); diff --git a/include/asm-x86_64/signal.h b/include/asm-x86_64/signal.h index fe9b96d94815..f8d55798535a 100644 --- a/include/asm-x86_64/signal.h +++ b/include/asm-x86_64/signal.h @@ -143,23 +143,23 @@ typedef struct sigaltstack { #undef __HAVE_ARCH_SIG_BITOPS #if 0 -extern __inline__ void sigaddset(sigset_t *set, int _sig) +static inline void sigaddset(sigset_t *set, int _sig) { __asm__("btsq %1,%0" : "=m"(*set) : "Ir"(_sig - 1) : "cc"); } -extern __inline__ void sigdelset(sigset_t *set, int _sig) +static inline void sigdelset(sigset_t *set, int _sig) { __asm__("btrq %1,%0" : "=m"(*set) : "Ir"(_sig - 1) : "cc"); } -extern __inline__ int __const_sigismember(sigset_t *set, int _sig) +static inline int __const_sigismember(sigset_t *set, int _sig) { unsigned long sig = _sig - 1; return 1 & (set->sig[sig / _NSIG_BPW] >> (sig & ~(_NSIG_BPW-1))); } -extern __inline__ int __gen_sigismember(sigset_t *set, int _sig) +static inline int __gen_sigismember(sigset_t *set, int _sig) { int ret; __asm__("btq %2,%1\n\tsbbq %0,%0" @@ -172,7 +172,7 @@ extern __inline__ int __gen_sigismember(sigset_t *set, int _sig) __const_sigismember((set),(sig)) : \ __gen_sigismember((set),(sig))) -extern __inline__ int sigfindinword(unsigned long word) +static inline int sigfindinword(unsigned long word) { __asm__("bsfq %1,%0" : "=r"(word) : "rm"(word) : "cc"); return word; diff --git a/include/asm-x86_64/smp.h b/include/asm-x86_64/smp.h index de8b57b2b62b..24e32611f0bf 100644 --- a/include/asm-x86_64/smp.h +++ b/include/asm-x86_64/smp.h @@ -72,7 +72,7 @@ static inline int num_booting_cpus(void) #define raw_smp_processor_id() read_pda(cpunumber) -extern __inline int hard_smp_processor_id(void) +static inline int hard_smp_processor_id(void) { /* we don't want to mark this access volatile - bad code generation */ return GET_APIC_ID(*(unsigned int *)(APIC_BASE+APIC_ID)); diff --git a/include/asm-x86_64/system.h b/include/asm-x86_64/system.h index 8606e170a7dc..d65381194bda 100644 --- a/include/asm-x86_64/system.h +++ b/include/asm-x86_64/system.h @@ -188,7 +188,7 @@ static inline void write_cr4(unsigned long val) #define __xg(x) ((volatile long *)(x)) -extern inline void set_64bit(volatile unsigned long *ptr, unsigned long val) +static inline void set_64bit(volatile unsigned long *ptr, unsigned long val) { *ptr = val; } -- cgit v1.2.3 From 27183ebd330a676fe29f7eb9b7ff582492246ec8 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Add dma_sync_single_range_for_{cpu,device} Currently just defined to their non range parts. Pointed out by John Linville Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/dma-mapping.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include') diff --git a/include/asm-x86_64/dma-mapping.h b/include/asm-x86_64/dma-mapping.h index a416dc31634a..e784fdc524f1 100644 --- a/include/asm-x86_64/dma-mapping.h +++ b/include/asm-x86_64/dma-mapping.h @@ -85,6 +85,11 @@ static inline void dma_sync_single_for_device(struct device *hwdev, flush_write_buffers(); } +#define dma_sync_single_range_for_cpu(dev, dma_handle, offset, size, dir) \ + dma_sync_single_for_cpu(dev, dma_handle, size, dir) +#define dma_sync_single_range_for_device(dev, dma_handle, offset, size, dir) \ + dma_sync_single_for_device(dev, dma_handle, size, dir) + static inline void dma_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg, int nelems, int direction) -- cgit v1.2.3 From 7effaa882af523085f7acadc5871b75a7e506baf Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Fix CFI information Being the foundation for reliable stack unwinding, this fixes CFI unwind annotations in many low-level x86_64 routines, plus a config option (available to all architectures, and also present in the previously sent patch adding such annotations to i386 code) to enable them separatly rather than only along with adding full debug information. Signed-off-by: Jan Beulich Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/calling.h | 23 +++++++++++++++-------- include/asm-x86_64/dwarf2.h | 8 ++++++++ 2 files changed, 23 insertions(+), 8 deletions(-) (limited to 'include') diff --git a/include/asm-x86_64/calling.h b/include/asm-x86_64/calling.h index 0bc12655fa5b..fc2c5a6c262a 100644 --- a/include/asm-x86_64/calling.h +++ b/include/asm-x86_64/calling.h @@ -65,27 +65,36 @@ .if \skipr11 .else movq (%rsp),%r11 + CFI_RESTORE r11 .endif .if \skipr8910 .else movq 1*8(%rsp),%r10 + CFI_RESTORE r10 movq 2*8(%rsp),%r9 + CFI_RESTORE r9 movq 3*8(%rsp),%r8 + CFI_RESTORE r8 .endif .if \skiprax .else movq 4*8(%rsp),%rax + CFI_RESTORE rax .endif .if \skiprcx .else movq 5*8(%rsp),%rcx + CFI_RESTORE rcx .endif .if \skiprdx .else movq 6*8(%rsp),%rdx + CFI_RESTORE rdx .endif movq 7*8(%rsp),%rsi + CFI_RESTORE rsi movq 8*8(%rsp),%rdi + CFI_RESTORE rdi .if ARG_SKIP+\addskip > 0 addq $ARG_SKIP+\addskip,%rsp CFI_ADJUST_CFA_OFFSET -(ARG_SKIP+\addskip) @@ -124,11 +133,17 @@ .macro RESTORE_REST movq (%rsp),%r15 + CFI_RESTORE r15 movq 1*8(%rsp),%r14 + CFI_RESTORE r14 movq 2*8(%rsp),%r13 + CFI_RESTORE r13 movq 3*8(%rsp),%r12 + CFI_RESTORE r12 movq 4*8(%rsp),%rbp + CFI_RESTORE rbp movq 5*8(%rsp),%rbx + CFI_RESTORE rbx addq $REST_SKIP,%rsp CFI_ADJUST_CFA_OFFSET -(REST_SKIP) .endm @@ -146,11 +161,3 @@ .macro icebp .byte 0xf1 .endm - -#ifdef CONFIG_FRAME_POINTER -#define ENTER enter -#define LEAVE leave -#else -#define ENTER -#define LEAVE -#endif diff --git a/include/asm-x86_64/dwarf2.h b/include/asm-x86_64/dwarf2.h index afd4212e860b..582757fc0365 100644 --- a/include/asm-x86_64/dwarf2.h +++ b/include/asm-x86_64/dwarf2.h @@ -24,6 +24,10 @@ #define CFI_ADJUST_CFA_OFFSET .cfi_adjust_cfa_offset #define CFI_OFFSET .cfi_offset #define CFI_REL_OFFSET .cfi_rel_offset +#define CFI_REGISTER .cfi_register +#define CFI_RESTORE .cfi_restore +#define CFI_REMEMBER_STATE .cfi_remember_state +#define CFI_RESTORE_STATE .cfi_restore_state #else @@ -36,6 +40,10 @@ #define CFI_ADJUST_CFA_OFFSET # #define CFI_OFFSET # #define CFI_REL_OFFSET # +#define CFI_REGISTER # +#define CFI_RESTORE # +#define CFI_REMEMBER_STATE # +#define CFI_RESTORE_STATE # #endif -- cgit v1.2.3 From 059bf0f6c33058680e4381f17d554baaa4f45d68 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Merge msr.c with i386 version The only difference was the inline assembly, so move that into asm/msr.h and merge with the i386 version. This adds some missing sysfs support code to x86-64. Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/msr.h | 39 +++++++++++++++++++++++++++------------ 1 file changed, 27 insertions(+), 12 deletions(-) (limited to 'include') diff --git a/include/asm-x86_64/msr.h b/include/asm-x86_64/msr.h index 15a6ef7cf3d3..4d727f3f5550 100644 --- a/include/asm-x86_64/msr.h +++ b/include/asm-x86_64/msr.h @@ -29,22 +29,37 @@ #define wrmsrl(msr,val) wrmsr(msr,(__u32)((__u64)(val)),((__u64)(val))>>32) /* wrmsr with exception handling */ -#define wrmsr_safe(msr,a,b) ({ int ret__; \ - asm volatile("2: wrmsr ; xorl %0,%0\n" \ - "1:\n\t" \ - ".section .fixup,\"ax\"\n\t" \ - "3: movl %4,%0 ; jmp 1b\n\t" \ - ".previous\n\t" \ - ".section __ex_table,\"a\"\n" \ - " .align 8\n\t" \ - " .quad 2b,3b\n\t" \ - ".previous" \ - : "=a" (ret__) \ - : "c" (msr), "0" (a), "d" (b), "i" (-EFAULT));\ +#define wrmsr_safe(msr,a,b) ({ int ret__; \ + asm volatile("2: wrmsr ; xorl %0,%0\n" \ + "1:\n\t" \ + ".section .fixup,\"ax\"\n\t" \ + "3: movl %4,%0 ; jmp 1b\n\t" \ + ".previous\n\t" \ + ".section __ex_table,\"a\"\n" \ + " .align 8\n\t" \ + " .quad 2b,3b\n\t" \ + ".previous" \ + : "=a" (ret__) \ + : "c" (msr), "0" (a), "d" (b), "i" (-EFAULT)); \ ret__; }) #define checking_wrmsrl(msr,val) wrmsr_safe(msr,(u32)(val),(u32)((val)>>32)) +#define rdmsr_safe(msr,a,b) \ + ({ int ret__; \ + asm volatile ("1: rdmsr\n" \ + "2:\n" \ + ".section .fixup,\"ax\"\n" \ + "3: movl %4,%0\n" \ + " jmp 2b\n" \ + ".previous\n" \ + ".section __ex_table,\"a\"\n" \ + " .align 8\n" \ + " .quad 1b,3b\n" \ + ".previous":"=&bDS" (ret__), "=a"(a), "=d"(b)\ + :"c"(msr), "i"(-EIO), "0"(0)); \ + ret__; }) + #define rdtsc(low,high) \ __asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high)) -- cgit v1.2.3 From 1209140c3c70aaa32d1a0462d79557f2a44a4ef8 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Safe interrupts in oops_begin/end Rather than blindly re-enabling interrupts in oops_end(), save their state in oope_begin() and then restore that state. Signed-off-by: Jan Beulich Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/kdebug.h | 4 ++-- include/asm-x86_64/proto.h | 3 --- 2 files changed, 2 insertions(+), 5 deletions(-) (limited to 'include') diff --git a/include/asm-x86_64/kdebug.h b/include/asm-x86_64/kdebug.h index b90341994d80..f604e84c5303 100644 --- a/include/asm-x86_64/kdebug.h +++ b/include/asm-x86_64/kdebug.h @@ -46,7 +46,7 @@ extern void die(const char *,struct pt_regs *,long); extern void __die(const char *,struct pt_regs *,long); extern void show_registers(struct pt_regs *regs); extern void dump_pagetable(unsigned long); -extern void oops_begin(void); -extern void oops_end(void); +extern unsigned long oops_begin(void); +extern void oops_end(unsigned long); #endif diff --git a/include/asm-x86_64/proto.h b/include/asm-x86_64/proto.h index 764b5f822ce2..dbb37b0adb43 100644 --- a/include/asm-x86_64/proto.h +++ b/include/asm-x86_64/proto.h @@ -74,9 +74,6 @@ extern void acpi_reserve_bootmem(void); extern void swap_low_mappings(void); -extern void oops_begin(void); -extern void die(const char *,struct pt_regs *,long); -extern void __die(const char * str, struct pt_regs * regs, long err); extern void __show_regs(struct pt_regs * regs); extern void show_regs(struct pt_regs * regs); -- cgit v1.2.3 From a0d58c9741e4ef42f5fbdfb2a6b86f03c6e9092f Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Set the stack pointer correctly in init_thread and init_tss Signed-off-by: Jan Beulich Signed-off-by: Linus Torvalds --- include/asm-x86_64/processor.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/asm-x86_64/processor.h b/include/asm-x86_64/processor.h index c6461c16edbf..03837d34fba0 100644 --- a/include/asm-x86_64/processor.h +++ b/include/asm-x86_64/processor.h @@ -254,7 +254,13 @@ struct thread_struct { u64 tls_array[GDT_ENTRY_TLS_ENTRIES]; } __attribute__((aligned(16))); -#define INIT_THREAD {} +#define INIT_THREAD { \ + .rsp0 = (unsigned long)&init_stack + sizeof(init_stack) \ +} + +#define INIT_TSS { \ + .rsp0 = (unsigned long)&init_stack + sizeof(init_stack) \ +} #define INIT_MMAP \ { &init_mm, 0, 0, NULL, PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, 1, NULL, NULL } -- cgit v1.2.3 From a2a0c992e9da823dc23abcb92a42ec5faf856b8b Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Remove unused vxtime.hz field Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/vsyscall.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include') diff --git a/include/asm-x86_64/vsyscall.h b/include/asm-x86_64/vsyscall.h index 2872da23fc7e..438a3f52f839 100644 --- a/include/asm-x86_64/vsyscall.h +++ b/include/asm-x86_64/vsyscall.h @@ -29,7 +29,6 @@ enum vsyscall_num { struct vxtime_data { long hpet_address; /* HPET base address */ - unsigned long hz; /* HPET clocks / sec */ int last; unsigned long last_tsc; long quot; -- cgit v1.2.3 From 1a426cb76443f5b0a021a9df57d3446d14763c21 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Declare NMI_VECTOR and handle it in the IPI sending code. Signed-off-by: Jan Beulich Signed-off-by: Linus Torvalds --- include/asm-x86_64/hw_irq.h | 1 + include/asm-x86_64/ipi.h | 17 ++++++++++++++--- 2 files changed, 15 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/asm-x86_64/hw_irq.h b/include/asm-x86_64/hw_irq.h index d9212eb4e894..dc97668ea0f9 100644 --- a/include/asm-x86_64/hw_irq.h +++ b/include/asm-x86_64/hw_irq.h @@ -26,6 +26,7 @@ struct hw_interrupt_type; #endif +#define NMI_VECTOR 0x02 /* * IDT vectors usable for external interrupt sources start * at 0x20: diff --git a/include/asm-x86_64/ipi.h b/include/asm-x86_64/ipi.h index 7ba668f43c59..022e9d340ad7 100644 --- a/include/asm-x86_64/ipi.h +++ b/include/asm-x86_64/ipi.h @@ -31,9 +31,20 @@ static inline unsigned int __prepare_ICR (unsigned int shortcut, int vector, unsigned int dest) { - unsigned int icr = APIC_DM_FIXED | shortcut | vector | dest; - if (vector == KDB_VECTOR) - icr = (icr & (~APIC_VECTOR_MASK)) | APIC_DM_NMI; + unsigned int icr = shortcut | dest; + + switch (vector) { + default: + icr |= APIC_DM_FIXED | vector; + break; + case NMI_VECTOR: + /* + * Setup KDB IPI to be delivered as an NMI + */ + case KDB_VECTOR: + icr |= APIC_DM_NMI; + break; + } return icr; } -- cgit v1.2.3 From a2d236b3ac8fcbbf1bae7d815294d258ba24e3f5 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Mon, 12 Sep 2005 18:49:24 +0200 Subject: [PATCH] x86-64: Lose constraints on cmpxchg While only cosmetic for x86-64, this adjusts the cmpxchg code appearantly inherited from i386 to use more generic constraints. Signed-off-by: Jan Beulich Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-x86_64/system.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include') diff --git a/include/asm-x86_64/system.h b/include/asm-x86_64/system.h index d65381194bda..85348e02ad2e 100644 --- a/include/asm-x86_64/system.h +++ b/include/asm-x86_64/system.h @@ -253,19 +253,19 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old, case 2: __asm__ __volatile__(LOCK_PREFIX "cmpxchgw %w1,%2" : "=a"(prev) - : "q"(new), "m"(*__xg(ptr)), "0"(old) + : "r"(new), "m"(*__xg(ptr)), "0"(old) : "memory"); return prev; case 4: __asm__ __volatile__(LOCK_PREFIX "cmpxchgl %k1,%2" : "=a"(prev) - : "q"(new), "m"(*__xg(ptr)), "0"(old) + : "r"(new), "m"(*__xg(ptr)), "0"(old) : "memory"); return prev; case 8: __asm__ __volatile__(LOCK_PREFIX "cmpxchgq %1,%2" : "=a"(prev) - : "q"(new), "m"(*__xg(ptr)), "0"(old) + : "r"(new), "m"(*__xg(ptr)), "0"(old) : "memory"); return prev; } -- cgit v1.2.3 From c47a3167d0454c0af5fb0a0322b01a0e3487798e Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:25 +0200 Subject: [PATCH] x86-64: Make dmi_find_device for !DMI case inline Otherwise it will generate warnings and be generated many times. Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/linux/dmi.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/dmi.h b/include/linux/dmi.h index c30175e8dec6..a415f1d93e9a 100644 --- a/include/linux/dmi.h +++ b/include/linux/dmi.h @@ -70,7 +70,7 @@ extern struct dmi_device * dmi_find_device(int type, const char *name, static inline int dmi_check_system(struct dmi_system_id *list) { return 0; } static inline char * dmi_get_system_info(int field) { return NULL; } -static struct dmi_device * dmi_find_device(int type, const char *name, +static inline struct dmi_device * dmi_find_device(int type, const char *name, struct dmi_device *from) { return NULL; } #endif -- cgit v1.2.3 From 049cdefe19f95b67b06b70915cd8e4ae7173337a Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Mon, 12 Sep 2005 18:49:25 +0200 Subject: [PATCH] x86-64: reduce x86-64 bug frame by 4 bytes As mentioned before, the size of the bug frame can be further reduced while continuing to use instructions to encode the information. Signed-off-by: Jan Beulich Signed-off-by: Linus Torvalds --- include/asm-x86_64/bug.h | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) (limited to 'include') diff --git a/include/asm-x86_64/bug.h b/include/asm-x86_64/bug.h index eed785667289..80ac1fe966ac 100644 --- a/include/asm-x86_64/bug.h +++ b/include/asm-x86_64/bug.h @@ -9,10 +9,8 @@ */ struct bug_frame { unsigned char ud2[2]; - unsigned char mov; - /* should use 32bit offset instead, but the assembler doesn't - like it */ - char *filename; + unsigned char push; + signed int filename; unsigned char ret; unsigned short line; } __attribute__((packed)); @@ -25,8 +23,8 @@ struct bug_frame { The magic numbers generate mov $64bitimm,%eax ; ret $offset. */ #define BUG() \ asm volatile( \ - "ud2 ; .byte 0xa3 ; .quad %c1 ; .byte 0xc2 ; .short %c0" :: \ - "i"(__LINE__), "i" (__stringify(__FILE__))) + "ud2 ; pushq $%c1 ; ret $%c0" :: \ + "i"(__LINE__), "i" (__FILE__)) void out_of_line_bug(void); #else static inline void out_of_line_bug(void) { } -- cgit v1.2.3 From 66759a01adbfe8828dd063e32cf5ed3f46696181 Mon Sep 17 00:00:00 2001 From: Chuck Ebbert <76306.1226@compuserve.com> Date: Mon, 12 Sep 2005 18:49:25 +0200 Subject: [PATCH] x86-64: i386/x86-64: Fix time going twice as fast problem on ATI Xpress chipsets Original patch from Bertro Simul This is probably still not quite correct, but seems to be the best solution so far. Signed-off-by: Linus Torvalds --- include/asm-i386/apic.h | 2 ++ include/asm-x86_64/apic.h | 2 ++ 2 files changed, 4 insertions(+) (limited to 'include') diff --git a/include/asm-i386/apic.h b/include/asm-i386/apic.h index 6a1b1882285c..8c454aa58ac6 100644 --- a/include/asm-i386/apic.h +++ b/include/asm-i386/apic.h @@ -130,6 +130,8 @@ extern unsigned int nmi_watchdog; #define NMI_LOCAL_APIC 2 #define NMI_INVALID 3 +extern int disable_timer_pin_1; + #else /* !CONFIG_X86_LOCAL_APIC */ static inline void lapic_shutdown(void) { } diff --git a/include/asm-x86_64/apic.h b/include/asm-x86_64/apic.h index 1559d78894ac..6c5d5ca8383a 100644 --- a/include/asm-x86_64/apic.h +++ b/include/asm-x86_64/apic.h @@ -109,6 +109,8 @@ extern unsigned int nmi_watchdog; #define NMI_LOCAL_APIC 2 #define NMI_INVALID 3 +extern int disable_timer_pin_1; + #endif /* CONFIG_X86_LOCAL_APIC */ extern unsigned boot_cpu_id; -- cgit v1.2.3 From 2ade81473636b33aaac64495f89a7dc572c529f0 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 12 Sep 2005 18:49:25 +0200 Subject: [PATCH] x86-64: clean up local_add/sub arguments Signed-off-by: Linus Torvalds --- include/asm-x86_64/local.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/asm-x86_64/local.h b/include/asm-x86_64/local.h index c954f15c1a75..3e72c41727c5 100644 --- a/include/asm-x86_64/local.h +++ b/include/asm-x86_64/local.h @@ -29,7 +29,7 @@ static __inline__ void local_dec(local_t *v) :"m" (v->counter)); } -static __inline__ void local_add(unsigned long i, local_t *v) +static __inline__ void local_add(unsigned int i, local_t *v) { __asm__ __volatile__( "addl %1,%0" @@ -37,7 +37,7 @@ static __inline__ void local_add(unsigned long i, local_t *v) :"ir" (i), "m" (v->counter)); } -static __inline__ void local_sub(unsigned long i, local_t *v) +static __inline__ void local_sub(unsigned int i, local_t *v) { __asm__ __volatile__( "subl %1,%0" -- cgit v1.2.3