linux-2.6-xfs/include/asm-alpha/barrier.h - view

Return to barrier.h CVS log

Up to [Development] / linux-2.6-xfs / include / asm-alpha

File: [Development] / linux-2.6-xfs / include / asm-alpha / Attic / barrier.h (download)

Revision 1.3, Fri Oct 13 17:03:09 2006 UTC (11 years ago) by tes.longdrop.melbourne.sgi.com
Branch: MAIN
Changes since 1.2: +0 -3 lines

Merge up to 2.6.18
Merge of 2.6.x-xfs-melb:linux:27192b by kenmcd.

#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)

#endif		/* __BARRIER_H */