From: Chen Gang Date: Mon, 22 Apr 2013 05:08:41 +0000 (+0100) Subject: arm64: Define cmpxchg64 and cmpxchg64_local for outside use X-Git-Tag: v3.10-rc1~44^2~16 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a84b086b874e0c03ca456c1748df7031a8cdf957;p=platform%2Fkernel%2Flinux-stable.git 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 --- diff --git a/arch/arm64/include/asm/cmpxchg.h b/arch/arm64/include/asm/cmpxchg.h index 968b5cb..8a8ce0e 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 */