18 lines
631 B
C
18 lines
631 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _TOOLS_LINUX_ASM_AARCH64_BARRIER_H
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#define _TOOLS_LINUX_ASM_AARCH64_BARRIER_H
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/*
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* From tools/perf/perf-sys.h, last modified in:
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* f428ebd184c82a7914b2aa7e9f868918aaf7ea78 perf tools: Fix AAAAARGH64 memory barriers
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*
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* XXX: arch/arm64/include/asm/barrier.h in the kernel sources use dsb, is this
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* a case like for arm32 where we do things differently in userspace?
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*/
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#define mb() asm volatile("dmb ish" ::: "memory")
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#define wmb() asm volatile("dmb ishst" ::: "memory")
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#define rmb() asm volatile("dmb ishld" ::: "memory")
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#endif /* _TOOLS_LINUX_ASM_AARCH64_BARRIER_H */
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