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Diffstat (limited to 'kernel/arch/xtensa/include/asm/barrier.h')
| -rw-r--r-- | kernel/arch/xtensa/include/asm/barrier.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/kernel/arch/xtensa/include/asm/barrier.h b/kernel/arch/xtensa/include/asm/barrier.h new file mode 100644 index 000000000..5b88774c7 --- /dev/null +++ b/kernel/arch/xtensa/include/asm/barrier.h @@ -0,0 +1,21 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2001 - 2012 Tensilica Inc. + */ + +#ifndef _XTENSA_SYSTEM_H +#define _XTENSA_SYSTEM_H + +#define mb() ({ __asm__ __volatile__("memw" : : : "memory"); }) +#define rmb() barrier() +#define wmb() mb() + +#define smp_mb__before_atomic() barrier() +#define smp_mb__after_atomic() barrier() + +#include <asm-generic/barrier.h> + +#endif /* _XTENSA_SYSTEM_H */ |