u-boot/arch/arm/include/asm/atomic.h
Chris Packham 4d9f7a014d ARM: use asm-generic/atomic.h
Make use of asm-generic/atomic.h retaining the smp_mb_... definitions.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2018-09-25 21:49:18 -04:00

32 lines
862 B
C

/*
* 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 <asm/proc-armv/system.h>
#include <asm-generic/atomic.h>
/* 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