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