perf_trace_add    581 include/linux/trace_events.h extern int  perf_trace_add(struct perf_event *event, int flags);
perf_trace_add   8808 kernel/events/core.c 	.add		= perf_trace_add,
perf_trace_add   8859 kernel/events/core.c 	.add		= perf_trace_add,
perf_trace_add   8918 kernel/events/core.c 	.add		= perf_trace_add,