diff options
Diffstat (limited to 'arch/x86/include/asm/barrier.h')
| -rw-r--r-- | arch/x86/include/asm/barrier.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/x86/include/asm/barrier.h b/arch/x86/include/asm/barrier.h index 04a48903b2e..5c7198cca5e 100644 --- a/arch/x86/include/asm/barrier.h +++ b/arch/x86/include/asm/barrier.h @@ -85,11 +85,7 @@ #else # define smp_rmb() barrier() #endif -#ifdef CONFIG_X86_OOSTORE -# define smp_wmb() wmb() -#else -# define smp_wmb() barrier() -#endif +#define smp_wmb() barrier() #define smp_read_barrier_depends() read_barrier_depends() #define set_mb(var, value) do { (void)xchg(&var, value); } while (0) #else /* !SMP */ @@ -100,7 +96,7 @@ #define set_mb(var, value) do { var = value; barrier(); } while (0) #endif /* SMP */ -#if defined(CONFIG_X86_OOSTORE) || defined(CONFIG_X86_PPRO_FENCE) +#if defined(CONFIG_X86_PPRO_FENCE) /* * For either of these options x86 doesn't have a strong TSO memory @@ -141,6 +137,10 @@ do { \ #endif +/* Atomic operations are already serializing on x86 */ +#define smp_mb__before_atomic() barrier() +#define smp_mb__after_atomic() barrier() + /* * Stop RDTSC speculation. This is needed when you need to use RDTSC * (or get_cycles or vread that possibly accesses the TSC) in a defined |