Hi Peter, On Mon, Jan 18, 2021 at 7:11 PM Peter Zijlstra <[email protected]> wrote: > > 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?
Ah, right. maybe I'm too specific to perf record's perspective. In perf record, it doesn't use read(2) so I thought it should have the information in the stream of sample data. Thanks, Namhyung
