mutex-null.h 666 B

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  1. /*
  2. * include/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. #define __mutex_fastpath_lock(count, fail_fn) fail_fn(count)
  13. #define __mutex_fastpath_lock_retval(count, fail_fn) fail_fn(count)
  14. #define __mutex_fastpath_unlock(count, fail_fn) fail_fn(count)
  15. #define __mutex_fastpath_trylock(count, fail_fn) fail_fn(count)
  16. #define __mutex_slowpath_needs_to_unlock() 1
  17. #endif