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authorRich Felker <dalias@aerifal.cx>2016-03-29 21:22:52 -0400
committerRich Felker <dalias@aerifal.cx>2016-03-29 21:27:28 -0400
commit5c3412d22555d03a1c00578ba8faaa8dc9206420 (patch)
treebb92d6cc16fd526d6f31dff0994636c0b3a07f34 /arch/x86_64
parent6d1a3dfeaf2caac4033a3c65822fb4e7e14866c7 (diff)
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fix regression disabling use of pause instruction for x86 a_spin
commits e24984efd5c6ac5ea8e6cb6cd914fa8435d458bc and
16b55298dc4b6a54d287d7494e04542667ef8861 inadvertently disabled the
a_spin implementations for i386, x86_64, and x32 by defining a macro
named a_pause instead of a_spin. this should not have caused any
functional regression, but it inhibited cpu relaxation while spinning
for locks.

bug reported by George Kulakowski.
Diffstat (limited to 'arch/x86_64')
-rw-r--r--arch/x86_64/atomic_arch.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86_64/atomic_arch.h b/arch/x86_64/atomic_arch.h
index 9f47f808..55fc6fb9 100644
--- a/arch/x86_64/atomic_arch.h
+++ b/arch/x86_64/atomic_arch.h
@@ -96,7 +96,7 @@ static inline void a_barrier()
 	__asm__ __volatile__( "" : : : "memory" );
 }
 
-#define a_pause a_pause
+#define a_spin a_spin
 static inline void a_spin()
 {
 	__asm__ __volatile__( "pause" : : : "memory" );