diff options
Diffstat (limited to 'include/asm-sparc64/semaphore.h')
| -rw-r--r-- | include/asm-sparc64/semaphore.h | 54 |
1 files changed, 1 insertions, 53 deletions
diff --git a/include/asm-sparc64/semaphore.h b/include/asm-sparc64/semaphore.h index 7f7c0c4e024f..d9b2034ed1d2 100644 --- a/include/asm-sparc64/semaphore.h +++ b/include/asm-sparc64/semaphore.h | |||
| @@ -1,53 +1 @@ | |||
| 1 | #ifndef _SPARC64_SEMAPHORE_H | #include <linux/semaphore.h> | |
| 2 | #define _SPARC64_SEMAPHORE_H | ||
| 3 | |||
| 4 | /* These are actually reasonable on the V9. | ||
| 5 | * | ||
| 6 | * See asm-ppc/semaphore.h for implementation commentary, | ||
| 7 | * only sparc64 specific issues are commented here. | ||
| 8 | */ | ||
| 9 | #ifdef __KERNEL__ | ||
| 10 | |||
| 11 | #include <asm/atomic.h> | ||
| 12 | #include <asm/system.h> | ||
| 13 | #include <linux/wait.h> | ||
| 14 | #include <linux/rwsem.h> | ||
| 15 | |||
| 16 | struct semaphore { | ||
| 17 | atomic_t count; | ||
| 18 | wait_queue_head_t wait; | ||
| 19 | }; | ||
| 20 | |||
| 21 | #define __SEMAPHORE_INITIALIZER(name, count) \ | ||
| 22 | { ATOMIC_INIT(count), \ | ||
| 23 | __WAIT_QUEUE_HEAD_INITIALIZER((name).wait) } | ||
| 24 | |||
| 25 | #define __DECLARE_SEMAPHORE_GENERIC(name, count) \ | ||
| 26 | struct semaphore name = __SEMAPHORE_INITIALIZER(name,count) | ||
| 27 | |||
| 28 | #define DECLARE_MUTEX(name) __DECLARE_SEMAPHORE_GENERIC(name, 1) | ||
| 29 | |||
| 30 | static inline void sema_init (struct semaphore *sem, int val) | ||
| 31 | { | ||
| 32 | atomic_set(&sem->count, val); | ||
| 33 | init_waitqueue_head(&sem->wait); | ||
| 34 | } | ||
| 35 | |||
| 36 | static inline void init_MUTEX (struct semaphore *sem) | ||
| 37 | { | ||
| 38 | sema_init(sem, 1); | ||
| 39 | } | ||
| 40 | |||
| 41 | static inline void init_MUTEX_LOCKED (struct semaphore *sem) | ||
| 42 | { | ||
| 43 | sema_init(sem, 0); | ||
| 44 | } | ||
| 45 | |||
| 46 | extern void up(struct semaphore *sem); | ||
| 47 | extern void down(struct semaphore *sem); | ||
| 48 | extern int down_trylock(struct semaphore *sem); | ||
| 49 | extern int down_interruptible(struct semaphore *sem); | ||
| 50 | |||
| 51 | #endif /* __KERNEL__ */ | ||
| 52 | |||
| 53 | #endif /* !(_SPARC64_SEMAPHORE_H) */ | ||
