tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel / tools / arch / arm64 / include / asm / barrier.h
at v4.11-rc2 16 lines 592 B view raw
1#ifndef _TOOLS_LINUX_ASM_AARCH64_BARRIER_H 2#define _TOOLS_LINUX_ASM_AARCH64_BARRIER_H 3 4/* 5 * From tools/perf/perf-sys.h, last modified in: 6 * f428ebd184c82a7914b2aa7e9f868918aaf7ea78 perf tools: Fix AAAAARGH64 memory barriers 7 * 8 * XXX: arch/arm64/include/asm/barrier.h in the kernel sources use dsb, is this 9 * a case like for arm32 where we do things differently in userspace? 10 */ 11 12#define mb() asm volatile("dmb ish" ::: "memory") 13#define wmb() asm volatile("dmb ishst" ::: "memory") 14#define rmb() asm volatile("dmb ishld" ::: "memory") 15 16#endif /* _TOOLS_LINUX_ASM_AARCH64_BARRIER_H */