diff options
| author | Yuval Adam <_@yuv.al> | 2017-08-30 08:25:59 +0000 |
|---|---|---|
| committer | Yuval Adam <_@yuv.al> | 2017-08-30 08:25:59 +0000 |
| commit | 8e4bff4cab0ddac6060645b0715210484d02ff40 (patch) | |
| tree | 3a5c3024371a04692a3a6d9974d001cdff8ebf84 /arch/cris/include/asm/barrier.h | |
Diffstat (limited to 'arch/cris/include/asm/barrier.h')
| -rw-r--r-- | arch/cris/include/asm/barrier.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/cris/include/asm/barrier.h b/arch/cris/include/asm/barrier.h new file mode 100644 index 00000000..198ad7fa --- /dev/null +++ b/arch/cris/include/asm/barrier.h @@ -0,0 +1,25 @@ +#ifndef __ASM_CRIS_BARRIER_H +#define __ASM_CRIS_BARRIER_H + +#define nop() __asm__ __volatile__ ("nop"); + +#define barrier() __asm__ __volatile__("": : :"memory") +#define mb() barrier() +#define rmb() mb() +#define wmb() mb() +#define read_barrier_depends() do { } while(0) +#define set_mb(var, value) do { var = value; mb(); } 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() +#else +#define smp_mb() barrier() +#define smp_rmb() barrier() +#define smp_wmb() barrier() +#define smp_read_barrier_depends() do { } while(0) +#endif + +#endif /* __ASM_CRIS_BARRIER_H */ |