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| author | Ingo Molnar <mingo@elte.hu> | 2006-01-10 00:59:17 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@hera.kernel.org> | 2006-01-10 00:59:17 +0100 |
| commit | ffbf670f5cd50501a34a5187981460da2216071e (patch) | |
| tree | f2cd9eeeb59839d15feddf906310bb375474c573 /include/asm-arm | |
| parent | Merge master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb (diff) | |
| download | linux-ffbf670f5cd50501a34a5187981460da2216071e.tar.xz linux-ffbf670f5cd50501a34a5187981460da2216071e.zip | |
[PATCH] mutex subsystem, add atomic_xchg() to all arches
add atomic_xchg() to all the architectures. Needed by the new mutex code.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Diffstat (limited to 'include/asm-arm')
| -rw-r--r-- | include/asm-arm/atomic.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-arm/atomic.h b/include/asm-arm/atomic.h index f72b63309bc5..3d7283d84405 100644 --- a/include/asm-arm/atomic.h +++ b/include/asm-arm/atomic.h @@ -175,6 +175,8 @@ static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr) #endif /* __LINUX_ARM_ARCH__ */ +#define atomic_xchg(v, new) (xchg(&((v)->counter), new)) + static inline int atomic_add_unless(atomic_t *v, int a, int u) { int c, old; |