tree 588c42567e160508d01289534b8bff1afb447f64
parent fb78bc79098c78d820419c398fc8995a8f75478e
author Andi Kleen <[EMAIL PROTECTED]> Tue Apr 12 08:25:39 2005
committer Linus Torvalds <[EMAIL PROTECTED]> Tue Apr 12 08:25:39 2005
[PATCH] x86_64: Correct wrong comment in local.h
local_t is actually a win over atomic_t because it does not need lock
prefixes.
Signed-off-by: Andi Kleen <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
local.h | 3 ++-
1 files changed, 2 insertions(+), 1 deletion(-)
Index: include/asm-x86_64/local.h
===================================================================
--- c2bbb2a8714257aab5ed9d1a142c06e305f30e61/include/asm-x86_64/local.h
(mode:100644 sha1:fb95195ed8776357d52424a1ce15c8fca82a7f77)
+++ 588c42567e160508d01289534b8bff1afb447f64/include/asm-x86_64/local.h
(mode:100644 sha1:99e82c422496ff90a0e3d1a70d2bfa9a3911d7e4)
@@ -45,7 +45,8 @@
:"ir" (i), "m" (v->counter));
}
-/* On x86, these are no better than the atomic variants. */
+/* On x86-64 these are better than the atomic variants on SMP kernels
+ because they dont use a lock prefix. */
#define __local_inc(l) local_inc(l)
#define __local_dec(l) local_dec(l)
#define __local_add(i,l) local_add((i),(l))
-
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