PERF_EVENT_STATE_ERROR
__event_disable(iter, ctx, PERF_EVENT_STATE_ERROR);
__event_disable(sibling, ctx, PERF_EVENT_STATE_ERROR);
event->state <= PERF_EVENT_STATE_ERROR)
event->state < PERF_EVENT_STATE_ERROR) {
if (event->state == PERF_EVENT_STATE_ERROR) {
perf_event_set_state(event, PERF_EVENT_STATE_ERROR);
if (event->state == PERF_EVENT_STATE_ERROR)
if (unlikely(READ_ONCE(event->state) == PERF_EVENT_STATE_ERROR &&