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1/*
2 * asm-generic/mutex-null.h
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
13/* extra parameter only needed for mutex debugging: */
14#ifndef __IP__
15# define __IP__
16#endif
17
18#define __mutex_fastpath_lock(count, fail_fn) fail_fn(count __RET_IP__)
19#define __mutex_fastpath_lock_retval(count, fail_fn) fail_fn(count __RET_IP__)
20#define __mutex_fastpath_unlock(count, fail_fn) fail_fn(count __RET_IP__)
21#define __mutex_fastpath_trylock(count, fail_fn) fail_fn(count)
22#define __mutex_slowpath_needs_to_unlock() 1
23
24#endif