ftrace_filter_pid_sched_switch_probe 6482 kernel/trace/ftrace.c 	unregister_trace_sched_switch(ftrace_filter_pid_sched_switch_probe, tr);
ftrace_filter_pid_sched_switch_probe 6643 kernel/trace/ftrace.c 		register_trace_sched_switch(ftrace_filter_pid_sched_switch_probe, tr);