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authorMathieu Desnoyers <mathieu.desnoyers@polymtl.ca>2008-02-07 03:16:09 -0500
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-07 11:42:30 -0500
commit3b96a56d395a4dcf4c05c48d8f4e74b1f8bd073d (patch)
tree1c4e8cb7c5ea7e7af7dd8e4c07b429dffa4b9cc5 /include/asm-mips
parenta259b2428b10c19b94e346bc69d5b3bf9bff488e (diff)
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 <mathieu.desnoyers@polymtl.ca> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-mips')
-rw-r--r--include/asm-mips/cmpxchg.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/asm-mips/cmpxchg.h b/include/asm-mips/cmpxchg.h
index a5ec0e5dc5b8..4a812c3ceb90 100644
--- a/include/asm-mips/cmpxchg.h
+++ b/include/asm-mips/cmpxchg.h
@@ -104,4 +104,21 @@ extern void __cmpxchg_called_with_bad_pointer(void);
104#define cmpxchg(ptr, old, new) __cmpxchg(ptr, old, new, smp_llsc_mb()) 104#define cmpxchg(ptr, old, new) __cmpxchg(ptr, old, new, smp_llsc_mb())
105#define cmpxchg_local(ptr, old, new) __cmpxchg(ptr, old, new, ) 105#define cmpxchg_local(ptr, old, new) __cmpxchg(ptr, old, new, )
106 106
107#define cmpxchg64(ptr, o, n) \
108 ({ \
109 BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
110 cmpxchg((ptr), (o), (n)); \
111 })
112
113#ifdef CONFIG_64BIT
114#define cmpxchg64_local(ptr, o, n) \
115 ({ \
116 BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
117 cmpxchg_local((ptr), (o), (n)); \
118 })
119#else
120#include <asm-generic/cmpxchg-local.h>
121#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
122#endif
123
107#endif /* __ASM_CMPXCHG_H */ 124#endif /* __ASM_CMPXCHG_H */