trigger_str      2193 kernel/trace/trace_events_hist.c parse_hist_trigger_attrs(struct trace_array *tr, char *trigger_str)
trigger_str      2202 kernel/trace/trace_events_hist.c 	while (trigger_str) {
trigger_str      2203 kernel/trace/trace_events_hist.c 		char *str = strsep(&trigger_str, ":");