Subversion Repositories or1k_old

#ifndef _I960_SEMAPHORE_H

#define _I960_SEMAPHORE_H

/*

 * interrupt-safe (not SMP-safe) semaphores..

 *

 * (C) Copyright 1999           Keith Adams <kma@cse.ogi.edu>

 *                              Oregon Graduate Institute

 *

 * Based on include/asm-i386/semaphore.h:

 * (C) Copyright 1996 Linus Torvalds

 *

 */

#include <asm/atomic.h>

struct semaphore {

        atomic_t count;

        atomic_t waking;

        int lock;       /* we don't actually use this; sched.c needs it, tho */

        struct wait_queue * wait;

};

#define MUTEX ((struct semaphore) { 1, 0, 0, NULL })

#define MUTEX_LOCKED ((struct semaphore) { 0, 0, 0, NULL })

extern void down(struct semaphore * sem);

extern int down_interruptible(struct semaphore * sem);

extern void up(struct semaphore * sem);

extern void get_buzz_lock(int *lock_ptr);

extern void give_buzz_lock(int *lock_ptr);

#endif