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/alpha | |
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/alpha')
-rw-r--r-- | arch/alpha/include/asm/rwsem.h | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/arch/alpha/include/asm/rwsem.h b/arch/alpha/include/asm/rwsem.h index 1570c0b54336..a83bbea62c67 100644 --- a/arch/alpha/include/asm/rwsem.h +++ b/arch/alpha/include/asm/rwsem.h | |||
@@ -13,44 +13,13 @@ | |||
13 | #ifdef __KERNEL__ | 13 | #ifdef __KERNEL__ |
14 | 14 | ||
15 | #include <linux/compiler.h> | 15 | #include <linux/compiler.h> |
16 | #include <linux/list.h> | ||
17 | #include <linux/spinlock.h> | ||
18 | 16 | ||
19 | struct rwsem_waiter; | ||
20 | |||
21 | extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem); | ||
22 | extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem); | ||
23 | extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *); | ||
24 | extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem); | ||
25 | |||
26 | /* | ||
27 | * the semaphore definition | ||
28 | */ | ||
29 | struct rw_semaphore { | ||
30 | long count; | ||
31 | #define RWSEM_UNLOCKED_VALUE 0x0000000000000000L | 17 | #define RWSEM_UNLOCKED_VALUE 0x0000000000000000L |
32 | #define RWSEM_ACTIVE_BIAS 0x0000000000000001L | 18 | #define RWSEM_ACTIVE_BIAS 0x0000000000000001L |
33 | #define RWSEM_ACTIVE_MASK 0x00000000ffffffffL | 19 | #define RWSEM_ACTIVE_MASK 0x00000000ffffffffL |
34 | #define RWSEM_WAITING_BIAS (-0x0000000100000000L) | 20 | #define RWSEM_WAITING_BIAS (-0x0000000100000000L) |
35 | #define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS | 21 | #define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS |
36 | #define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS) | 22 | #define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS) |
37 | spinlock_t wait_lock; | ||
38 | struct list_head wait_list; | ||
39 | }; | ||
40 | |||
41 | #define __RWSEM_INITIALIZER(name) \ | ||
42 | { RWSEM_UNLOCKED_VALUE, SPIN_LOCK_UNLOCKED, \ | ||
43 | LIST_HEAD_INIT((name).wait_list) } | ||
44 | |||
45 | #define DECLARE_RWSEM(name) \ | ||
46 | struct rw_semaphore name = __RWSEM_INITIALIZER(name) | ||
47 | |||
48 | static inline void init_rwsem(struct rw_semaphore *sem) | ||
49 | { | ||
50 | sem->count = RWSEM_UNLOCKED_VALUE; | ||
51 | spin_lock_init(&sem->wait_lock); | ||
52 | INIT_LIST_HEAD(&sem->wait_list); | ||
53 | } | ||
54 | 23 | ||
55 | static inline void __down_read(struct rw_semaphore *sem) | 24 | static inline void __down_read(struct rw_semaphore *sem) |
56 | { | 25 | { |
@@ -250,10 +219,5 @@ static inline long rwsem_atomic_update(long val, struct rw_semaphore *sem) | |||
250 | #endif | 219 | #endif |
251 | } | 220 | } |
252 | 221 | ||
253 | static inline int rwsem_is_locked(struct rw_semaphore *sem) | ||
254 | { | ||
255 | return (sem->count != 0); | ||
256 | } | ||
257 | |||
258 | #endif /* __KERNEL__ */ | 222 | #endif /* __KERNEL__ */ |
259 | #endif /* _ALPHA_RWSEM_H */ | 223 | #endif /* _ALPHA_RWSEM_H */ |