| David Howells | 803f691 | 2012-03-28 18:30:02 +0100 | [diff] [blame] | 1 | #ifndef _M68K_BARRIER_H |
| 2 | #define _M68K_BARRIER_H |
| 3 | |
| 4 | /* |
| 5 | * Force strict CPU ordering. |
| 6 | * Not really required on m68k... |
| 7 | */ |
| 8 | #define nop() do { asm volatile ("nop"); barrier(); } while (0) |
| 9 | #define mb() barrier() |
| 10 | #define rmb() barrier() |
| 11 | #define wmb() barrier() |
| 12 | #define read_barrier_depends() ((void)0) |
| 13 | #define set_mb(var, value) ({ (var) = (value); wmb(); }) |
| 14 | |
| 15 | #define smp_mb() barrier() |
| 16 | #define smp_rmb() barrier() |
| 17 | #define smp_wmb() barrier() |
| 18 | #define smp_read_barrier_depends() ((void)0) |
| 19 | |
| 20 | #endif /* _M68K_BARRIER_H */ |