1#ifndef __BARRIER_H
2#define __BARRIER_H
3
4#include <asm/compiler.h>
5
6#define mb() \
7__asm__ __volatile__("mb": : :"memory")
8
9#define rmb() \
10__asm__ __volatile__("mb": : :"memory")
11
12#define wmb() \
13__asm__ __volatile__("wmb": : :"memory")
14
15#define read_barrier_depends() \
16__asm__ __volatile__("mb": : :"memory")
17
18#ifdef CONFIG_SMP
19#define smp_mb()	mb()
20#define smp_rmb()	rmb()
21#define smp_wmb()	wmb()
22#define smp_read_barrier_depends()	read_barrier_depends()
23#else
24#define smp_mb()	barrier()
25#define smp_rmb()	barrier()
26#define smp_wmb()	barrier()
27#define smp_read_barrier_depends()	barrier()
28#endif
29
30#define set_mb(var, value) \
31do { var = value; mb(); } while (0)
32
33#endif		/* __BARRIER_H */
34