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-rw-r--r--include/asm-sparc64/semaphore.h54
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
16struct 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
30static inline void sema_init (struct semaphore *sem, int val)
31{
32 atomic_set(&sem->count, val);
33 init_waitqueue_head(&sem->wait);
34}
35
36static inline void init_MUTEX (struct semaphore *sem)
37{
38 sema_init(sem, 1);
39}
40
41static inline void init_MUTEX_LOCKED (struct semaphore *sem)
42{
43 sema_init(sem, 0);
44}
45
46extern void up(struct semaphore *sem);
47extern void down(struct semaphore *sem);
48extern int down_trylock(struct semaphore *sem);
49extern int down_interruptible(struct semaphore *sem);
50
51#endif /* __KERNEL__ */
52
53#endif /* !(_SPARC64_SEMAPHORE_H) */