From f9c4650bcfb4b21126525f73f10d635284e16056 Mon Sep 17 00:00:00 2001 From: Mathieu Desnoyers Date: Thu, 7 Feb 2008 00:16:10 -0800 Subject: Add cmpxchg64 and cmpxchg64_local to powerpc Make sure that at least cmpxchg64_local is available on all architectures to use for unsigned long long values. Signed-off-by: Mathieu Desnoyers Acked-by: Paul Mackerras Cc: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-powerpc/system.h | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) (limited to 'include/asm-powerpc') diff --git a/include/asm-powerpc/system.h b/include/asm-powerpc/system.h index bc9739dff5e..2a65ae63720 100644 --- a/include/asm-powerpc/system.h +++ b/include/asm-powerpc/system.h @@ -463,7 +463,7 @@ __cmpxchg_local(volatile void *ptr, unsigned long old, unsigned long new, return old; } -#define cmpxchg(ptr,o,n) \ +#define cmpxchg(ptr, o, n) \ ({ \ __typeof__(*(ptr)) _o_ = (o); \ __typeof__(*(ptr)) _n_ = (n); \ @@ -472,7 +472,7 @@ __cmpxchg_local(volatile void *ptr, unsigned long old, unsigned long new, }) -#define cmpxchg_local(ptr,o,n) \ +#define cmpxchg_local(ptr, o, n) \ ({ \ __typeof__(*(ptr)) _o_ = (o); \ __typeof__(*(ptr)) _n_ = (n); \ @@ -492,6 +492,20 @@ __cmpxchg_local(volatile void *ptr, unsigned long old, unsigned long new, */ #define NET_IP_ALIGN 0 #define NET_SKB_PAD L1_CACHE_BYTES + +#define cmpxchg64(ptr, o, n) \ + ({ \ + BUILD_BUG_ON(sizeof(*(ptr)) != 8); \ + cmpxchg((ptr), (o), (n)); \ + }) +#define cmpxchg64_local(ptr, o, n) \ + ({ \ + BUILD_BUG_ON(sizeof(*(ptr)) != 8); \ + cmpxchg_local((ptr), (o), (n)); \ + }) +#else +#include +#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) #endif #define arch_align_stack(x) (x) -- cgit v1.2.3-70-g09d2