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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copied from the kernel sources to tools/perf/:
*
* Generic barrier definitions.
*
* It should be possible to use these on really simple architectures,
* but it serves more as a starting point for new ports.
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#ifndef __TOOLS_LINUX_ASM_GENERIC_BARRIER_H
#define __TOOLS_LINUX_ASM_GENERIC_BARRIER_H
#ifndef __ASSEMBLY__
#include <linux/compiler.h>
/*
* Force strict CPU ordering. And yes, this is required on UP too when we're
* talking to devices.
*
* Fall back to compiler barriers if nothing better is provided.
*/
#ifndef mb
#define mb() barrier()
#endif
#ifndef rmb
#define rmb() mb()
#endif
#ifndef wmb
#define wmb() mb()
#endif
#endif /* !__ASSEMBLY__ */
#endif /* __TOOLS_LINUX_ASM_GENERIC_BARRIER_H */
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