From 8a6d48c0542876eb3acfc0970c0ab7872db08d5f Mon Sep 17 00:00:00 2001 From: Zheng Da Date: Sun, 6 Dec 2009 05:26:23 +0100 Subject: check in the original version of dde linux26. --- .../contrib/include/asm-generic/mutex-null.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 libdde_linux26/contrib/include/asm-generic/mutex-null.h (limited to 'libdde_linux26/contrib/include/asm-generic/mutex-null.h') diff --git a/libdde_linux26/contrib/include/asm-generic/mutex-null.h b/libdde_linux26/contrib/include/asm-generic/mutex-null.h new file mode 100644 index 00000000..e1bbbc72 --- /dev/null +++ b/libdde_linux26/contrib/include/asm-generic/mutex-null.h @@ -0,0 +1,19 @@ +/* + * 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, fail_fn) fail_fn(count) +#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 -- cgit v1.2.3