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| author | Andi Kleen <ak@suse.de> | 2006-09-27 21:38:56 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-27 14:39:51 -0700 |
| commit | 00463c1633b6d6a2178d2dc794c0a70ac2f9ce6b (patch) | |
| tree | 83d02451139608ad70fb33c5f0e3bb90019841b2 /include/asm-i386 | |
| parent | cdb8355add9b1d87ecfcb58b12879897dc1e3e36 (diff) | |
| download | blackbird-op-linux-00463c1633b6d6a2178d2dc794c0a70ac2f9ce6b.tar.gz blackbird-op-linux-00463c1633b6d6a2178d2dc794c0a70ac2f9ce6b.zip | |
[PATCH] i386: Use early clobbers for semaphores now
The new code does clobber the result early, so make sure to tell
gcc to not put it into the same register as a input argument
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andrew Morton <akpm@osdl.org>
Acked-by: Kyle McMartin <kyle@parisc-linux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-i386')
| -rw-r--r-- | include/asm-i386/semaphore.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/asm-i386/semaphore.h b/include/asm-i386/semaphore.h index e63b6a68f04c..4e34a468c383 100644 --- a/include/asm-i386/semaphore.h +++ b/include/asm-i386/semaphore.h @@ -126,7 +126,7 @@ static inline int down_interruptible(struct semaphore * sem) "lea %1,%%eax\n\t" "call __down_failed_interruptible\n" "2:" - :"=a" (result), "+m" (sem->count) + :"=&a" (result), "+m" (sem->count) : :"memory"); return result; @@ -148,7 +148,7 @@ static inline int down_trylock(struct semaphore * sem) "lea %1,%%eax\n\t" "call __down_failed_trylock\n\t" "2:\n" - :"=a" (result), "+m" (sem->count) + :"=&a" (result), "+m" (sem->count) : :"memory"); return result; |
