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- /*
- * 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
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