1/*
2 *  linux/include/asm-arm/atomic.h
3 *
4 *  Copyright (c) 1996 Russell King.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 *  Changelog:
11 *   27-06-1996	RMK	Created
12 *   13-04-1997	RMK	Made functions atomic!
13 *   07-12-1997	RMK	Upgraded for v2.1.
14 *   26-08-1998	PJB	Added #ifdef __KERNEL__
15 */
16#ifndef __ASM_ARM_ATOMIC_H
17#define __ASM_ARM_ATOMIC_H
18
19#ifdef CONFIG_SMP
20#error SMP not supported
21#endif
22
23#include <asm/proc-armv/system.h>
24#include <asm-generic/atomic.h>
25
26/* Atomic operations are already serializing on ARM */
27#define smp_mb__before_atomic_dec()	barrier()
28#define smp_mb__after_atomic_dec()	barrier()
29#define smp_mb__before_atomic_inc()	barrier()
30#define smp_mb__after_atomic_inc()	barrier()
31
32#endif
33