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