From a84b086b874e0c03ca456c1748df7031a8cdf957 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Mon, 22 Apr 2013 06:08:41 +0100 Subject: arm64: Define cmpxchg64 and cmpxchg64_local for outside use Drivers use cmpxchg64, cmpxchg64_local to perform 64-bit operation, so they can cross 32-bit and 64-bit platforms (it is a standard way). Signed-off-by: Chen Gang Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/cmpxchg.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/arm64/include') diff --git a/arch/arm64/include/asm/cmpxchg.h b/arch/arm64/include/asm/cmpxchg.h index 968b5cbfc26..8a8ce0e73a3 100644 --- a/arch/arm64/include/asm/cmpxchg.h +++ b/arch/arm64/include/asm/cmpxchg.h @@ -170,4 +170,7 @@ static inline unsigned long __cmpxchg_mb(volatile void *ptr, unsigned long old, (unsigned long)(n), \ sizeof(*(ptr)))) +#define cmpxchg64(ptr,o,n) cmpxchg((ptr),(o),(n)) +#define cmpxchg64_local(ptr,o,n) cmpxchg_local((ptr),(o),(n)) + #endif /* __ASM_CMPXCHG_H */ -- cgit v1.2.3