perf/x86: Add compiler barrier after updating BTS

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Since BTS is coherent, simply add a compiler barrier to separate the BTS
update and aux_head store.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20210809111407.596077-5-leo.yan@linaro.org

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Leo Yan 2021-08-09 19:14:02 +08:00 • committed by Peter Zijlstra

parent 4034fb207e

commit 41100833cd

1 changed files with 6 additions and 0 deletions

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6

arch/x86/events/intel/bts.c

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