Messages in this thread | | | Date | Mon, 18 Jan 2021 11:11:26 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH] perf/core: Emit PERF_RECORD_LOST for pinned events |
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On Mon, Jan 18, 2021 at 12:43:23PM +0900, Namhyung Kim wrote: > As of now we silently ignore pinned events when it's failed to be > scheduled and make it error state not try to schedule it again. > That means we won't get any samples for the event. > > But there's no way for users to notice and respond to it. Let's > emit a lost event with a new misc bit to indicate this situation.
Users should get a read(2) error IIRC, does that not work?
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