diff options
| author | Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> | 2008-02-07 00:16:26 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-07 08:42:33 -0800 |
| commit | b62f13439147210d5ad4bc40acee32b94c59f06d (patch) | |
| tree | f5948b96ce938b4cd28b30dfd02731a1ec7dbc73 | |
| parent | 80af4eeb726f038eddc32826e4238feba5b1dfb4 (diff) | |
| download | op-kernel-dev-b62f13439147210d5ad4bc40acee32b94c59f06d.zip op-kernel-dev-b62f13439147210d5ad4bc40acee32b94c59f06d.tar.gz | |
Add cmpxchg_local to v850
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: Miles Bader <miles.bader@necel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/asm-v850/system.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/asm-v850/system.h b/include/asm-v850/system.h index a34ddfa..7daf1fd 100644 --- a/include/asm-v850/system.h +++ b/include/asm-v850/system.h @@ -103,6 +103,21 @@ static inline unsigned long __xchg (unsigned long with, return tmp; } +#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 /* __V850_SYSTEM_H__ */ |
