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| author | Ingo Molnar <mingo@elte.hu> | 2009-02-12 13:08:57 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-02-12 13:08:57 +0100 |
| commit | 871cafcc962fa1655c44b4f0e54d4c5cc14e273c (patch) | |
| tree | fdb7bc65d2606c85b7be6c33ba0dfd5b4e472245 /arch/sh/include/asm/mutex-llsc.h | |
| parent | cf2592f59c0e8ed4308adbdb2e0a88655379d579 (diff) | |
| parent | b578f3fcca1e78624dfb5f358776e63711d7fda2 (diff) | |
| download | talos-obmc-linux-871cafcc962fa1655c44b4f0e54d4c5cc14e273c.tar.gz talos-obmc-linux-871cafcc962fa1655c44b4f0e54d4c5cc14e273c.zip | |
Merge branch 'linus' into core/softlockup
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); } |
