diff options
Diffstat (limited to 'include/asm-frv')
| -rw-r--r-- | include/asm-frv/system.h | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/include/asm-frv/system.h b/include/asm-frv/system.h index 2c57f473474..30a67a9da11 100644 --- a/include/asm-frv/system.h +++ b/include/asm-frv/system.h @@ -179,14 +179,23 @@ do { \ #define mb() asm volatile ("membar" : : :"memory") #define rmb() asm volatile ("membar" : : :"memory") #define wmb() asm volatile ("membar" : : :"memory") -#define set_mb(var, value) do { var = value; mb(); } while (0) +#define read_barrier_depends() barrier() -#define smp_mb() mb() -#define smp_rmb() rmb() -#define smp_wmb() wmb() - -#define read_barrier_depends() do {} while(0) +#ifdef CONFIG_SMP +#define smp_mb() mb() +#define smp_rmb() rmb() +#define smp_wmb() wmb() #define smp_read_barrier_depends() read_barrier_depends() +#define set_mb(var, value) \ + do { xchg(&var, (value)); } while (0) +#else +#define smp_mb() barrier() +#define smp_rmb() barrier() +#define smp_wmb() barrier() +#define smp_read_barrier_depends() do {} while(0) +#define set_mb(var, value) \ + do { var = (value); barrier(); } while (0) +#endif #define HARD_RESET_NOW() \ do { \ |