Subversion Repositories or1k

#ifndef __ARCH_OR1K_ATOMIC__

#define __ARCH_OR1K_ATOMIC__

#include <linux/config.h>

#include <asm/system.h>

/*

 * Atomic operations that C can't guarantee us.  Useful for

 * resource counting etc..

 */

typedef int atomic_t;

static __inline__ void atomic_add(atomic_t i, atomic_t *v)

{

        unsigned long flags;

        save_flags(flags); cli();

        *v += i;

        restore_flags(flags);

}

static __inline__ void atomic_sub(atomic_t i, atomic_t *v)

{

        unsigned long flags;

        save_flags(flags); cli();

        *v -= i;

        restore_flags(flags);

}

static __inline__ int atomic_sub_and_test(atomic_t i, atomic_t *v)

{

        unsigned long flags, result;

        save_flags(flags); cli();

        *v -= i;

        result = (*v == 0);

        restore_flags(flags);

        return result;

}

static __inline__ void atomic_inc(atomic_t *v)

{

        atomic_add(1, v);

}

static __inline__ void atomic_dec(atomic_t *v)

{

        atomic_sub(1, v);

}

static __inline__ int atomic_dec_and_test(atomic_t *v)

{

        return atomic_sub_and_test(1, v);

}

#endif /* __ARCH_OR1K_ATOMIC __ */