25 lines
806 B
C
25 lines
806 B
C
|
/*
|
||
|
|
* 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
|
||
|
|
|
||
|
|
/* extra parameter only needed for mutex debugging: */
|
||
|
|
#ifndef __IP__
|
||
|
|
# define __IP__
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define __mutex_fastpath_lock(count, fail_fn) fail_fn(count __RET_IP__)
|
||
|
|
#define __mutex_fastpath_lock_retval(count, fail_fn) fail_fn(count __RET_IP__)
|
||
|
|
#define __mutex_fastpath_unlock(count, fail_fn) fail_fn(count __RET_IP__)
|
||
|
|
#define __mutex_fastpath_trylock(count, fail_fn) fail_fn(count)
|
||
|
|
#define __mutex_slowpath_needs_to_unlock() 1
|
||
|
|
|
||
|
|
#endif
|