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authorAndi Kleen <ak@suse.de>2007-07-22 11:12:40 +0200
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-22 11:03:38 -0700
commite05aff854c9f348629bb66c191eee87e4d002900 (patch)
tree11913da94cce3ac1bc478f1d2916dd573f56fac5
parent57c22f49e4c7d27a03e109a317c30b12f1bae0b2 (diff)
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i386: Use patchable lock prefix in set_64bit
Previously lock was unconditionally used, but shouldn't be needed on UP systems. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/asm-i386/cmpxchg.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-i386/cmpxchg.h b/include/asm-i386/cmpxchg.h
index 64dcdf46117b..f86ede28f6dc 100644
--- a/include/asm-i386/cmpxchg.h
+++ b/include/asm-i386/cmpxchg.h
@@ -34,7 +34,7 @@ static inline void __set_64bit (unsigned long long * ptr,
"\n1:\t"
"movl (%0), %%eax\n\t"
"movl 4(%0), %%edx\n\t"
- "lock cmpxchg8b (%0)\n\t"
+ LOCK_PREFIX "cmpxchg8b (%0)\n\t"
"jnz 1b"
: /* no outputs */
: "D"(ptr),