fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-sparc64 / semaphore.h
blob7f7c0c4e024faa737e67e678c5fe6b1ac8a921a7
1 #ifndef _SPARC64_SEMAPHORE_H
2 #define _SPARC64_SEMAPHORE_H
4 /* These are actually reasonable on the V9.
6 * See asm-ppc/semaphore.h for implementation commentary,
7 * only sparc64 specific issues are commented here.
8 */
9 #ifdef __KERNEL__
11 #include <asm/atomic.h>
12 #include <asm/system.h>
13 #include <linux/wait.h>
14 #include <linux/rwsem.h>
16 struct semaphore {
17 atomic_t count;
18 wait_queue_head_t wait;
21 #define __SEMAPHORE_INITIALIZER(name, count) \
22 { ATOMIC_INIT(count), \
23 __WAIT_QUEUE_HEAD_INITIALIZER((name).wait) }
25 #define __DECLARE_SEMAPHORE_GENERIC(name, count) \
26 struct semaphore name = __SEMAPHORE_INITIALIZER(name,count)
28 #define DECLARE_MUTEX(name) __DECLARE_SEMAPHORE_GENERIC(name, 1)
30 static inline void sema_init (struct semaphore *sem, int val)
32 atomic_set(&sem->count, val);
33 init_waitqueue_head(&sem->wait);
36 static inline void init_MUTEX (struct semaphore *sem)
38 sema_init(sem, 1);
41 static inline void init_MUTEX_LOCKED (struct semaphore *sem)
43 sema_init(sem, 0);
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);
51 #endif /* __KERNEL__ */
53 #endif /* !(_SPARC64_SEMAPHORE_H) */