#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 <asm/atomic.h> #include <asm/system.h> #include <linux/wait.h> #include <linux/rwsem.h> 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 __DECLARE_SEMAPHORE_GENERIC(name, count) \ struct semaphore name = __SEMAPHORE_INITIALIZER(name,count) #define DECLARE_MUTEX(name) __DECLARE_SEMAPHORE_GENERIC(name, 1) 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) */