2 * asm-generic/mutex-null.h
4 * Generic implementation of the mutex fastpath, based on NOP :-)
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.
10 #ifndef _ASM_GENERIC_MUTEX_NULL_H
11 #define _ASM_GENERIC_MUTEX_NULL_H
13 /* extra parameter only needed for mutex debugging: */
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