#ifndef __BARRIER_H #define __BARRIER_H #include #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 */