diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-15 21:28:30 -0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-15 21:28:30 -0400 |
commit | 0586bed3e8563c2eb89bc7256e30ce633ae06cfb (patch) | |
tree | 7a59610f45f7222f25b3212c53fa28636bb4427c /arch/powerpc/include/asm/rwsem.h | |
parent | b80cd62b7d4406bbe8c573fe4381dcc71a2850fd (diff) | |
parent | dbebbfbb1605f0179e7c0d900d941cc9c45de569 (diff) |
Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
rtmutex: tester: Remove the remaining BKL leftovers
lockdep/timers: Explain in detail the locking problems del_timer_sync() may cause
rtmutex: Simplify PI algorithm and make highest prio task get lock
rwsem: Remove redundant asmregparm annotation
rwsem: Move duplicate function prototypes to linux/rwsem.h
rwsem: Unify the duplicate rwsem_is_locked() inlines
rwsem: Move duplicate init macros and functions to linux/rwsem.h
rwsem: Move duplicate struct rwsem declaration to linux/rwsem.h
x86: Cleanup rwsem_count_t typedef
rwsem: Cleanup includes
locking: Remove deprecated lock initializers
cred: Replace deprecated spinlock initialization
kthread: Replace deprecated spinlock initialization
xtensa: Replace deprecated spinlock initialization
um: Replace deprecated spinlock initialization
sparc: Replace deprecated spinlock initialization
mips: Replace deprecated spinlock initialization
cris: Replace deprecated spinlock initialization
alpha: Replace deprecated spinlock initialization
rtmutex-tester: Remove BKL tests
Diffstat (limited to 'arch/powerpc/include/asm/rwsem.h')
-rw-r--r-- | arch/powerpc/include/asm/rwsem.h | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/arch/powerpc/include/asm/rwsem.h b/arch/powerpc/include/asm/rwsem.h index 8447d89fbe72..bb1e2cdeb9bf 100644 --- a/arch/powerpc/include/asm/rwsem.h +++ b/arch/powerpc/include/asm/rwsem.h | |||
@@ -13,11 +13,6 @@ | |||
13 | * by Paul Mackerras <paulus@samba.org>. | 13 | * by Paul Mackerras <paulus@samba.org>. |
14 | */ | 14 | */ |
15 | 15 | ||
16 | #include <linux/list.h> | ||
17 | #include <linux/spinlock.h> | ||
18 | #include <asm/atomic.h> | ||
19 | #include <asm/system.h> | ||
20 | |||
21 | /* | 16 | /* |
22 | * the semaphore definition | 17 | * the semaphore definition |
23 | */ | 18 | */ |
@@ -33,47 +28,6 @@ | |||
33 | #define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS | 28 | #define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS |
34 | #define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS) | 29 | #define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS) |
35 | 30 | ||
36 | struct rw_semaphore { | ||
37 | long count; | ||
38 | spinlock_t wait_lock; | ||
39 | struct list_head wait_list; | ||
40 | #ifdef CONFIG_DEBUG_LOCK_ALLOC | ||
41 | struct lockdep_map dep_map; | ||
42 | #endif | ||
43 | }; | ||
44 | |||
45 | #ifdef CONFIG_DEBUG_LOCK_ALLOC | ||
46 | # define __RWSEM_DEP_MAP_INIT(lockname) , .dep_map = { .name = #lockname } | ||
47 | #else | ||
48 | # define __RWSEM_DEP_MAP_INIT(lockname) | ||
49 | #endif | ||
50 | |||
51 | #define __RWSEM_INITIALIZER(name) \ | ||
52 | { \ | ||
53 | RWSEM_UNLOCKED_VALUE, \ | ||
54 | __SPIN_LOCK_UNLOCKED((name).wait_lock), \ | ||
55 | LIST_HEAD_INIT((name).wait_list) \ | ||
56 | __RWSEM_DEP_MAP_INIT(name) \ | ||
57 | } | ||
58 | |||
59 | #define DECLARE_RWSEM(name) \ | ||
60 | struct rw_semaphore name = __RWSEM_INITIALIZER(name) | ||
61 | |||
62 | extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem); | ||
63 | extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem); | ||
64 | extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem); | ||
65 | extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem); | ||
66 | |||
67 | extern void __init_rwsem(struct rw_semaphore *sem, const char *name, | ||
68 | struct lock_class_key *key); | ||
69 | |||
70 | #define init_rwsem(sem) \ | ||
71 | do { \ | ||
72 | static struct lock_class_key __key; \ | ||
73 | \ | ||
74 | __init_rwsem((sem), #sem, &__key); \ | ||
75 | } while (0) | ||
76 | |||
77 | /* | 31 | /* |
78 | * lock for reading | 32 | * lock for reading |
79 | */ | 33 | */ |
@@ -174,10 +128,5 @@ static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem) | |||
174 | return atomic_long_add_return(delta, (atomic_long_t *)&sem->count); | 128 | return atomic_long_add_return(delta, (atomic_long_t *)&sem->count); |
175 | } | 129 | } |
176 | 130 | ||
177 | static inline int rwsem_is_locked(struct rw_semaphore *sem) | ||
178 | { | ||
179 | return sem->count != 0; | ||
180 | } | ||
181 | |||
182 | #endif /* __KERNEL__ */ | 131 | #endif /* __KERNEL__ */ |
183 | #endif /* _ASM_POWERPC_RWSEM_H */ | 132 | #endif /* _ASM_POWERPC_RWSEM_H */ |