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/*
* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
*
* 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.
*/
#ifndef __ASM_ARC_SMP_H
#define __ASM_ARC_SMP_H
/*
* ARC700 doesn't support atomic Read-Modify-Write ops.
* Originally Interrupts had to be disabled around code to gaurantee atomicity.
* The LLOCK/SCOND insns allow writing interrupt-hassle-free based atomic ops
* based on retry-if-irq-in-atomic (with hardware assist).
* However despite these, we provide the IRQ disabling variant
*
* (1) These insn were introduced only in 4.10 release. So for older released
* support needed.
*/
#ifndef CONFIG_ARC_HAS_LLSC
#include <linux/irqflags.h>
#define atomic_ops_lock(flags) local_irq_save(flags)
#define atomic_ops_unlock(flags) local_irq_restore(flags)
#define bitops_lock(flags) local_irq_save(flags)
#define bitops_unlock(flags) local_irq_restore(flags)
#endif /* !CONFIG_ARC_HAS_LLSC */
#endif
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