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| author | Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> | 2008-02-07 00:16:15 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-07 08:42:32 -0800 |
| commit | aebb77aef4b50a157bf0185de31d1aede3ca2312 (patch) | |
| tree | 0f4b5f17120b93193d06dcf9f6ca270f2c06c5fc /include/asm-h8300 | |
| parent | 14e0cb3c60b89c4a2512852ffc18601c72314a0f (diff) | |
| download | kernel_samsung_smdk4412-aebb77aef4b50a157bf0185de31d1aede3ca2312.tar.gz kernel_samsung_smdk4412-aebb77aef4b50a157bf0185de31d1aede3ca2312.tar.bz2 kernel_samsung_smdk4412-aebb77aef4b50a157bf0185de31d1aede3ca2312.zip | |
Add cmpxchg_local to h8300
Use the new generic cmpxchg_local (disables interrupt). Also use the generic
cmpxchg as fallback if SMP is not set.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-h8300')
| -rw-r--r-- | include/asm-h8300/system.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/asm-h8300/system.h b/include/asm-h8300/system.h index 2c1e83f7b41..4b8e475908a 100644 --- a/include/asm-h8300/system.h +++ b/include/asm-h8300/system.h @@ -138,6 +138,21 @@ static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int siz asm("jmp @@0"); \ }) +#include <asm-generic/cmpxchg-local.h> + +/* + * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make + * them available. + */ +#define cmpxchg_local(ptr, o, n) \ + ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\ + (unsigned long)(n), sizeof(*(ptr)))) +#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) + +#ifndef CONFIG_SMP +#include <asm-generic/cmpxchg.h> +#endif + #define arch_align_stack(x) (x) #endif /* _H8300_SYSTEM_H */ |