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File: [Development] / linux-2.6-xfs / include / asm-generic / mutex-null.h (download)

Revision 1.2, Fri Oct 13 17:03:09 2006 UTC (11 years ago) by tes.longdrop.melbourne.sgi.com
Branch: MAIN
Changes since 1.1: +5 -10 lines 

Merge up to 2.6.18
Merge of 2.6.x-xfs-melb:linux:27192b by kenmcd.

/*
 * 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, fail_fn)	fail_fn(count)
#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