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由 John Blackwood 提交于
perf events: repair incorrect use of copy_from_user This makes the perf_event_period() return 0 instead of -EFAULT on success. Signed-off-by: John Blackwood<john.blackwood@ccur.com> Signed-off-by: NJoe Korty <joe.korty@ccur.com> Acked-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20100928220311.GA18145@tsunami.ccur.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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