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| author | Ingo Molnar <mingo@elte.hu> | 2009-02-09 10:32:48 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-02-09 10:32:48 +0100 |
| commit | 4ad476e11f94fd3724c6e272d8220e99cd222b27 (patch) | |
| tree | a8684d4ecbfe1d2b2b1e29ed74de65394ad21b43 /arch/sh/include/asm/mutex-llsc.h | |
| parent | ring_buffer: remove unused flags parameter, fix (diff) | |
| parent | Linux 2.6.29-rc4 (diff) | |
| download | linux-4ad476e11f94fd3724c6e272d8220e99cd222b27.tar.xz linux-4ad476e11f94fd3724c6e272d8220e99cd222b27.zip | |
Merge commit 'v2.6.29-rc4' into tracing/core
Diffstat (limited to 'arch/sh/include/asm/mutex-llsc.h')
| -rw-r--r-- | arch/sh/include/asm/mutex-llsc.h | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/arch/sh/include/asm/mutex-llsc.h b/arch/sh/include/asm/mutex-llsc.h index ee839ee58ac8..090358a7e1bb 100644 --- a/arch/sh/include/asm/mutex-llsc.h +++ b/arch/sh/include/asm/mutex-llsc.h @@ -21,38 +21,36 @@ static inline void __mutex_fastpath_lock(atomic_t *count, void (*fail_fn)(atomic_t *)) { - int __ex_flag, __res; + int __done, __res; __asm__ __volatile__ ( "movli.l @%2, %0 \n" "add #-1, %0 \n" "movco.l %0, @%2 \n" "movt %1 \n" - : "=&z" (__res), "=&r" (__ex_flag) + : "=&z" (__res), "=&r" (__done) : "r" (&(count)->counter) : "t"); - __res |= !__ex_flag; - if (unlikely(__res != 0)) + if (unlikely(!__done || __res != 0)) fail_fn(count); } static inline int __mutex_fastpath_lock_retval(atomic_t *count, int (*fail_fn)(atomic_t *)) { - int __ex_flag, __res; + int __done, __res; __asm__ __volatile__ ( "movli.l @%2, %0 \n" "add #-1, %0 \n" "movco.l %0, @%2 \n" "movt %1 \n" - : "=&z" (__res), "=&r" (__ex_flag) + : "=&z" (__res), "=&r" (__done) : "r" (&(count)->counter) : "t"); - __res |= !__ex_flag; - if (unlikely(__res != 0)) + if (unlikely(!__done || __res != 0)) __res = fail_fn(count); return __res; @@ -61,19 +59,18 @@ __mutex_fastpath_lock_retval(atomic_t *count, int (*fail_fn)(atomic_t *)) static inline void __mutex_fastpath_unlock(atomic_t *count, void (*fail_fn)(atomic_t *)) { - int __ex_flag, __res; + int __done, __res; __asm__ __volatile__ ( "movli.l @%2, %0 \n\t" "add #1, %0 \n\t" "movco.l %0, @%2 \n\t" "movt %1 \n\t" - : "=&z" (__res), "=&r" (__ex_flag) + : "=&z" (__res), "=&r" (__done) : "r" (&(count)->counter) : "t"); - __res |= !__ex_flag; - if (unlikely(__res <= 0)) + if (unlikely(!__done || __res <= 0)) fail_fn(count); } |