diff options
| author | Will Deacon <will.deacon@arm.com> | 2014-04-16 17:08:24 +0530 |
|---|---|---|
| committer | Ishan Mittal <imittal@nvidia.com> | 2014-04-30 11:39:11 +0530 |
| commit | ad863bab295121fa4ff43b5eff54a2aeeac196fe (patch) | |
| tree | 179ef4cbace0a3e0afbee2a0d3313b18944b004a /arch/arm64/include/asm/cmpxchg.h | |
| parent | ec63a680fb53a87e7ef470ecef00ffd03fdd0eba (diff) | |
arm64: cmpxchg: implement cmpxchg64_relaxed
This patch introduces cmpxchg64_relaxed for arm64 using the existing
cmpxchg_local macro, which performs a cmpxchg operation (up to 64 bits)
without barrier semantics.
(cherry picked from commit cf10b79a7d88edc689479af989b3a88e9adf07ff)
Change-Id: Ia5da0af964dac47203c18d276c92aa5fee218307
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/cmpxchg.h')
| -rw-r--r-- | arch/arm64/include/asm/cmpxchg.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/cmpxchg.h b/arch/arm64/include/asm/cmpxchg.h index 8a8ce0e73a38..3914c0dcd09c 100644 --- a/arch/arm64/include/asm/cmpxchg.h +++ b/arch/arm64/include/asm/cmpxchg.h @@ -173,4 +173,6 @@ static inline unsigned long __cmpxchg_mb(volatile void *ptr, unsigned long old, #define cmpxchg64(ptr,o,n) cmpxchg((ptr),(o),(n)) #define cmpxchg64_local(ptr,o,n) cmpxchg_local((ptr),(o),(n)) +#define cmpxchg64_relaxed(ptr,o,n) cmpxchg_local((ptr),(o),(n)) + #endif /* __ASM_CMPXCHG_H */ |