| 6,7 → 6,7 |
|---|
| |
| /* |
| * Force strict CPU ordering. |
| * And yes, this is required on UP too when we're talking |
| * And yes, this might be required on UP too when we're talking |
| * to devices. |
| */ |
| |
| 31,21 → 31,11 |
|---|
| #endif |
| #define dma_wmb() barrier() |
| |
| #ifdef CONFIG_SMP |
| #define smp_mb() mb() |
| #define smp_rmb() dma_rmb() |
| #define smp_wmb() barrier() |
| #define smp_store_mb(var, value) do { (void)xchg(&var, value); } while (0) |
| #else /* !SMP */ |
| #define smp_mb() barrier() |
| #define smp_rmb() barrier() |
| #define smp_wmb() barrier() |
| #define smp_store_mb(var, value) do { WRITE_ONCE(var, value); barrier(); } while (0) |
| #endif /* SMP */ |
| #define __smp_mb() mb() |
| #define __smp_rmb() dma_rmb() |
| #define __smp_wmb() barrier() |
| #define __smp_store_mb(var, value) do { (void)xchg(&var, value); } while (0) |
| |
| #define read_barrier_depends() do { } while (0) |
| #define smp_read_barrier_depends() do { } while (0) |
| |
| #if defined(CONFIG_X86_PPRO_FENCE) |
| |
| /* |