#ifndef __BARRIER_H#define __BARRIER_H #include <asm/compiler.h> #define mb() \__asm__ __volatile__("mb": : :"memory") #define rmb() \__asm__ __volatile__("mb": : :"memory") #define wmb() \__asm__ __volatile__("wmb": : :"memory") #define read_barrier_depends() \__asm__ __volatile__("mb": : :"memory") #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()	barrier()#endif #define set_mb(var, value) \do { var = value; mb(); } while (0) #define set_wmb(var, value) \do { var = value; wmb(); } while (0) #endif		/* __BARRIER_H */