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Subject[patch 04/28] Add cmpxchg64 and cmpxchg64_local to mips
Make sure that at least cmpxchg64_local is available on all architectures to use
for unsigned long long values.

Signed-off-by: Mathieu Desnoyers <>
include/asm-mips/cmpxchg.h | 9 +++++++++
1 file changed, 9 insertions(+)

Index: linux-2.6-lttng/include/asm-mips/cmpxchg.h
--- linux-2.6-lttng.orig/include/asm-mips/cmpxchg.h 2007-10-12 12:05:06.000000000 -0400
+++ linux-2.6-lttng/include/asm-mips/cmpxchg.h 2007-10-12 12:08:56.000000000 -0400
@@ -104,4 +104,13 @@ extern void __cmpxchg_called_with_bad_po
#define cmpxchg(ptr, old, new) __cmpxchg(ptr, old, new, smp_llsc_mb())
#define cmpxchg_local(ptr, old, new) __cmpxchg(ptr, old, new, )

+#define cmpxchg64 cmpxchg
+#ifdef CONFIG_64BIT
+#define cmpxchg64_local cmpxchg_local
+#include <asm-generic/cmpxchg-local.h>
+#define cmpxchg64_local(ptr,o,n) __cmpxchg64_local_generic((ptr),(o),(n))
#endif /* __ASM_CMPXCHG_H */
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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