barrier.h

 1/*
 2 * Copied from the kernel sources to tools/:
 3 *
 4 * This file is subject to the terms and conditions of the GNU General Public
 5 * License.  See the file "COPYING" in the main directory of this archive
 6 * for more details.
 7 *
 8 * Copyright (C) 2001 - 2012 Tensilica Inc.
 9 */
10
11#ifndef _TOOLS_LINUX_XTENSA_SYSTEM_H
12#define _TOOLS_LINUX_XTENSA_SYSTEM_H
13
14#define mb()  ({ __asm__ __volatile__("memw" : : : "memory"); })
15#define rmb() barrier()
16#define wmb() mb()
17
18#endif /* _TOOLS_LINUX_XTENSA_SYSTEM_H */