20 lines
648 B
C
20 lines
648 B
C
/*
|
|
* 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
|