From cf10b79a7d88edc689479af989b3a88e9adf07ff Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Wed, 9 Oct 2013 15:54:28 +0100 Subject: 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. Signed-off-by: Will Deacon Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/cmpxchg.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/arm64/include/asm/cmpxchg.h') diff --git a/arch/arm64/include/asm/cmpxchg.h b/arch/arm64/include/asm/cmpxchg.h index 8a8ce0e..3914c0d 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 */ -- cgit v1.1