1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 2001 - 2012 Tensilica Inc. 7 */ 8 9#ifndef _XTENSA_SYSTEM_H 10#define _XTENSA_SYSTEM_H 11 12#define mb() ({ __asm__ __volatile__("memw" : : : "memory"); }) 13#define rmb() barrier() 14#define wmb() mb() 15 16#define __smp_mb__before_atomic() barrier() 17#define __smp_mb__after_atomic() barrier() 18 19#include <asm-generic/barrier.h> 20 21#endif /* _XTENSA_SYSTEM_H */ 22