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| author | Kevin | 2014-11-15 09:58:27 +0800 |
|---|---|---|
| committer | Kevin | 2014-11-15 09:58:27 +0800 |
| commit | 392e8802486cb573b916e746010e141a75f507e6 (patch) | |
| tree | 50029aca02c81f087b90336e670b44e510782330 /ANDROID_3.4.5/arch/h8300/include/asm/barrier.h | |
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init android origin source code
Diffstat (limited to 'ANDROID_3.4.5/arch/h8300/include/asm/barrier.h')
| -rw-r--r-- | ANDROID_3.4.5/arch/h8300/include/asm/barrier.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/ANDROID_3.4.5/arch/h8300/include/asm/barrier.h b/ANDROID_3.4.5/arch/h8300/include/asm/barrier.h new file mode 100644 index 00000000..c7283c34 --- /dev/null +++ b/ANDROID_3.4.5/arch/h8300/include/asm/barrier.h @@ -0,0 +1,27 @@ +#ifndef _H8300_BARRIER_H +#define _H8300_BARRIER_H + +#define nop() asm volatile ("nop"::) + +/* + * Force strict CPU ordering. + * Not really required on H8... + */ +#define mb() asm volatile ("" : : :"memory") +#define rmb() asm volatile ("" : : :"memory") +#define wmb() asm volatile ("" : : :"memory") +#define set_mb(var, value) do { xchg(&var, value); } 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 /* _H8300_BARRIER_H */ |