[patch 06/28] Add cmpxchg64 and cmpxchg64_local to x86_64

Mathieu Desnoyers
2007-10-30T19:26:12Z

[-- Attachment #1: add-cmpxchg64-to-x86_64.patch --]
[-- Type: text/plain, Size: 1152 bytes --]

Make sure that at least cmpxchg64_local is available on all architectures to use
for unsigned long long values.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
CC: Andi Kleen <ak@muc.de>
---
include/asm-x86_64/cmpxchg.h | 2 ++
1 file changed, 2 insertions(+)

Index: linux-2.6-lttng/include/asm-x86_64/cmpxchg.h
===================================================================
--- linux-2.6-lttng.orig/include/asm-x86_64/cmpxchg.h 2007-08-27 11:16:46.000000000 -0400
+++ linux-2.6-lttng/include/asm-x86_64/cmpxchg.h 2007-08-27 11:17:21.000000000 -0400
@@ -127,8 +127,10 @@ static inline unsigned long __cmpxchg_lo
#define cmpxchg(ptr,o,n)\
((__typeof__(*(ptr)))__cmpxchg((ptr),(unsigned long)(o),\
(unsigned long)(n),sizeof(*(ptr))))
+#define cmpxchg64 cmpxchg
#define cmpxchg_local(ptr,o,n)\
((__typeof__(*(ptr)))__cmpxchg_local((ptr),(unsigned long)(o),\
(unsigned long)(n),sizeof(*(ptr))))
+#define cmpxchg64_local cmpxchg_local

#endif