selftests/perf_events: Add a SIGTRAP stress test with disables
Add a SIGTRAP stress test that exercises repeatedly enabling/disabling an event while it concurrently keeps firing. Signed-off-by:Marco Elver <elver@google.com> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/all/Y0E3uG7jOywn7vy3@elver.google.com/
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