From e358c1a2c45f7ec32d77cc09a2bb42d6823a4193 Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Fri, 31 Mar 2006 02:32:13 -0800 Subject: [PATCH] mutex: some cleanups Turn some macros into inline functions and add proper type checking as well as being more readable. Also a minor comment adjustment. Signed-off-by: Nicolas Pitre Acked-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-generic/mutex-dec.h | 30 ++++++++++++++++-------------- 1 file changed, 16 insertions(+), 14 deletions(-) (limited to 'include/asm-generic/mutex-dec.h') diff --git a/include/asm-generic/mutex-dec.h b/include/asm-generic/mutex-dec.h index 40c6d1f8659..29c6ac34e23 100644 --- a/include/asm-generic/mutex-dec.h +++ b/include/asm-generic/mutex-dec.h @@ -17,13 +17,14 @@ * it wasn't 1 originally. This function MUST leave the value lower than * 1 even when the "1" assertion wasn't true. */ -#define __mutex_fastpath_lock(count, fail_fn) \ -do { \ - if (unlikely(atomic_dec_return(count) < 0)) \ - fail_fn(count); \ - else \ - smp_mb(); \ -} while (0) +static inline void +__mutex_fastpath_lock(atomic_t *count, fastcall void (*fail_fn)(atomic_t *)) +{ + if (unlikely(atomic_dec_return(count) < 0)) + fail_fn(count); + else + smp_mb(); +} /** * __mutex_fastpath_lock_retval - try to take the lock by moving the count @@ -36,7 +37,7 @@ do { \ * or anything the slow path function returns. */ static inline int -__mutex_fastpath_lock_retval(atomic_t *count, int (*fail_fn)(atomic_t *)) +__mutex_fastpath_lock_retval(atomic_t *count, fastcall int (*fail_fn)(atomic_t *)) { if (unlikely(atomic_dec_return(count) < 0)) return fail_fn(count); @@ -59,12 +60,13 @@ __mutex_fastpath_lock_retval(atomic_t *count, int (*fail_fn)(atomic_t *)) * __mutex_slowpath_needs_to_unlock() macro needs to return 1, it needs * to return 0 otherwise. */ -#define __mutex_fastpath_unlock(count, fail_fn) \ -do { \ - smp_mb(); \ - if (unlikely(atomic_inc_return(count) <= 0)) \ - fail_fn(count); \ -} while (0) +static inline void +__mutex_fastpath_unlock(atomic_t *count, fastcall void (*fail_fn)(atomic_t *)) +{ + smp_mb(); + if (unlikely(atomic_inc_return(count) <= 0)) + fail_fn(count); +} #define __mutex_slowpath_needs_to_unlock() 1 -- cgit v1.2.3