diff options
| author | Nick Piggin <npiggin@suse.de> | 2008-05-14 06:35:11 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-05-14 10:05:18 -0700 |
| commit | 73f10281ea96d7e8b4fc1c5d755a7c8eb484155b (patch) | |
| tree | d75ab7ba0f571ce0c08d30a04f1da7c781b02092 /include | |
| parent | 4ef7e3e90f56c74b2a17e12d49ed35c3767d66c2 (diff) | |
read_barrier_depends arch fixlets
read_barrie_depends has always been a noop (not a compiler barrier) on all
architectures except SMP alpha. This brings UP alpha and frv into line with all
other architectures, and fixes incorrect documentation.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-alpha/barrier.h | 2 | ||||
| -rw-r--r-- | include/asm-frv/system.h | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/include/asm-alpha/barrier.h b/include/asm-alpha/barrier.h index 384dc08d6f5..ac78eba909b 100644 --- a/include/asm-alpha/barrier.h +++ b/include/asm-alpha/barrier.h @@ -24,7 +24,7 @@ __asm__ __volatile__("mb": : :"memory") #define smp_mb() barrier() #define smp_rmb() barrier() #define smp_wmb() barrier() -#define smp_read_barrier_depends() barrier() +#define smp_read_barrier_depends() do { } while (0) #endif #define set_mb(var, value) \ diff --git a/include/asm-frv/system.h b/include/asm-frv/system.h index cb307f8a6b4..d3a12a9079f 100644 --- a/include/asm-frv/system.h +++ b/include/asm-frv/system.h @@ -179,7 +179,7 @@ do { \ #define mb() asm volatile ("membar" : : :"memory") #define rmb() asm volatile ("membar" : : :"memory") #define wmb() asm volatile ("membar" : : :"memory") -#define read_barrier_depends() barrier() +#define read_barrier_depends() do { } while (0) #ifdef CONFIG_SMP #define smp_mb() mb() |