Merge tag 'perf-urgent-2021-09-19' of git://

Pull perf event fix from Thomas Gleixner:
 "A single fix for the perf core where a value read with READ_ONCE() was
  checked and then reread which makes all the checks invalid. Reuse the
  already read value instead"

* tag 'perf-urgent-2021-09-19' of git://
  events: Reuse value read using READ_ONCE instead of re-reading it