linux/include/asm-alpha/barrier.h
Ivan Kokshaysky 63f324cf07 [PATCH] fix alpha breakage
barrier.h uses barrier() in non-SMP case.  And doesn't include compiler.h.

Cc: Al Viro <viro@ftp.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:35 -07:00

37 lines
761 B
C

#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 */