[deliverable/linux.git] / include / asm-generic / mutex-null.h

/*
 * include/asm-generic/mutex-null.h
 *
 * Generic implementation of the mutex fastpath, based on NOP :-)
 *
 * This is used by the mutex-debugging infrastructure, but it can also
 * be used by architectures that (for whatever reason) want to use the
 * spinlock based slowpath.
 */
#ifndef _ASM_GENERIC_MUTEX_NULL_H
#define _ASM_GENERIC_MUTEX_NULL_H

#define __mutex_fastpath_lock(count, fail_fn)		fail_fn(count)
#define __mutex_fastpath_lock_retval(count)		(-1)
#define __mutex_fastpath_unlock(count, fail_fn)		fail_fn(count)
#define __mutex_fastpath_trylock(count, fail_fn)	fail_fn(count)
#define __mutex_slowpath_needs_to_unlock()		1

#endif
Commit	Line	Data
620a6fd1	1	/*
f30c2269	2	* include/asm-generic/mutex-null.h
620a6fd1 IM	3	*
	4	* Generic implementation of the mutex fastpath, based on NOP :-)
	5	*
	6	* This is used by the mutex-debugging infrastructure, but it can also
	7	* be used by architectures that (for whatever reason) want to use the
	8	* spinlock based slowpath.
	9	*/
	10	#ifndef _ASM_GENERIC_MUTEX_NULL_H
	11	#define _ASM_GENERIC_MUTEX_NULL_H
	12
9a11b49a	13	#define __mutex_fastpath_lock(count, fail_fn) fail_fn(count)
a41b56ef	14	#define __mutex_fastpath_lock_retval(count) (-1)
9a11b49a IM	15	#define __mutex_fastpath_unlock(count, fail_fn) fail_fn(count)
	16	#define __mutex_fastpath_trylock(count, fail_fn) fail_fn(count)
	17	#define __mutex_slowpath_needs_to_unlock() 1
620a6fd1 IM	18
620a6fd1 IM	19	#endif