forked from Minki/linux
4f3db0746c
We will need it for atomic.h, so move it from the ad-hoc tools/perf/ place to a tools/ subset of the kernel arch/ hierarchy. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-cgfhreaejd7ohitdjccu9k2o@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
17 lines
592 B
C
17 lines
592 B
C
#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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