tree de5f3374bfb56c0e5a4527b3b0127face20eca3f
parent 72e76be2fedb4db320a4855d870f731c1242a9d3
author Andi Kleen <[EMAIL PROTECTED]> Sun, 17 Apr 2005 05:25:08 -0700
committer Linus Torvalds <[EMAIL PROTECTED]> Sun, 17 Apr 2005 05:25:08 -0700
[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]>
asm-x86_64/local.h | 3 ++-
1 files changed, 2 insertions(+), 1 deletion(-)
Index: include/asm-x86_64/local.h
===================================================================
--- e81ec1181cba1c29eaa898d3b474301b8dc2d298/include/asm-x86_64/local.h
(mode:100644 sha1:169c223a8452177b6c37c02be7356aabc299da7d)
+++ de5f3374bfb56c0e5a4527b3b0127face20eca3f/include/asm-x86_64/local.h
(mode:100644 sha1:c954f15c1a755f850c60b7e0f0c05a17b1feb2b8)
@@ -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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