From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- include/asm-sparc64/semaphore.h | 57 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 include/asm-sparc64/semaphore.h (limited to 'include/asm-sparc64/semaphore.h') diff --git a/include/asm-sparc64/semaphore.h b/include/asm-sparc64/semaphore.h new file mode 100644 index 0000000..7419dd8 --- /dev/null +++ b/include/asm-sparc64/semaphore.h @@ -0,0 +1,57 @@ +#ifndef _SPARC64_SEMAPHORE_H +#define _SPARC64_SEMAPHORE_H + +/* These are actually reasonable on the V9. + * + * See asm-ppc/semaphore.h for implementation commentary, + * only sparc64 specific issues are commented here. + */ +#ifdef __KERNEL__ + +#include +#include +#include +#include + +struct semaphore { + atomic_t count; + wait_queue_head_t wait; +}; + +#define __SEMAPHORE_INITIALIZER(name, count) \ + { ATOMIC_INIT(count), \ + __WAIT_QUEUE_HEAD_INITIALIZER((name).wait) } + +#define __MUTEX_INITIALIZER(name) \ + __SEMAPHORE_INITIALIZER(name, 1) + +#define __DECLARE_SEMAPHORE_GENERIC(name, count) \ + struct semaphore name = __SEMAPHORE_INITIALIZER(name,count) + +#define DECLARE_MUTEX(name) __DECLARE_SEMAPHORE_GENERIC(name, 1) +#define DECLARE_MUTEX_LOCKED(name) __DECLARE_SEMAPHORE_GENERIC(name, 0) + +static inline void sema_init (struct semaphore *sem, int val) +{ + atomic_set(&sem->count, val); + init_waitqueue_head(&sem->wait); +} + +static inline void init_MUTEX (struct semaphore *sem) +{ + sema_init(sem, 1); +} + +static inline void init_MUTEX_LOCKED (struct semaphore *sem) +{ + sema_init(sem, 0); +} + +extern void up(struct semaphore *sem); +extern void down(struct semaphore *sem); +extern int down_trylock(struct semaphore *sem); +extern int down_interruptible(struct semaphore *sem); + +#endif /* __KERNEL__ */ + +#endif /* !(_SPARC64_SEMAPHORE_H) */ -- cgit v1.1