perf_event_exit_task 1468 fs/exec.c      		perf_event_exit_task(current);
perf_event_exit_task  899 include/linux/perf_event.h extern void perf_event_exit_task(struct task_struct *child);
perf_event_exit_task  811 kernel/exit.c  	perf_event_exit_task(tsk);