diff options
Diffstat (limited to 'include/asm-generic/barrier.h')
| -rw-r--r-- | include/asm-generic/barrier.h | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/include/asm-generic/barrier.h b/include/asm-generic/barrier.h index f5c40b0fadc2..55e3abc2d027 100644 --- a/include/asm-generic/barrier.h +++ b/include/asm-generic/barrier.h @@ -55,19 +55,45 @@ #endif #ifdef CONFIG_SMP + +#ifndef smp_mb #define smp_mb() mb() +#endif + +#ifndef smp_rmb #define smp_rmb() rmb() +#endif + +#ifndef smp_wmb #define smp_wmb() wmb() +#endif + +#ifndef smp_read_barrier_depends #define smp_read_barrier_depends() read_barrier_depends() -#else +#endif + +#else /* !CONFIG_SMP */ + +#ifndef smp_mb #define smp_mb() barrier() +#endif + +#ifndef smp_rmb #define smp_rmb() barrier() +#endif + +#ifndef smp_wmb #define smp_wmb() barrier() +#endif + +#ifndef smp_read_barrier_depends #define smp_read_barrier_depends() do { } while (0) #endif -#ifndef set_mb -#define set_mb(var, value) do { (var) = (value); mb(); } while (0) +#endif /* CONFIG_SMP */ + +#ifndef smp_store_mb +#define smp_store_mb(var, value) do { WRITE_ONCE(var, value); mb(); } while (0) #endif #ifndef smp_mb__before_atomic |