/* * linux/include/asm-arm/atomic.h * * Copyright (c) 1996 Russell King. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * Changelog: * 27-06-1996 RMK Created * 13-04-1997 RMK Made functions atomic! * 07-12-1997 RMK Upgraded for v2.1. * 26-08-1998 PJB Added #ifdef __KERNEL__ */ #ifndef __ASM_ARM_ATOMIC_H #define __ASM_ARM_ATOMIC_H #ifdef CONFIG_SMP #error SMP not supported #endif #include #include /* Atomic operations are already serializing on ARM */ #define smp_mb__before_atomic_dec() barrier() #define smp_mb__after_atomic_dec() barrier() #define smp_mb__before_atomic_inc() barrier() #define smp_mb__after_atomic_inc() barrier() #endif