first_key_idx    5723 kernel/trace/trace_events_hist.c 		unsigned int idx, first_key_idx;
first_key_idx    5726 kernel/trace/trace_events_hist.c 		first_key_idx = hist_data->n_vals - hist_data->n_vars;
first_key_idx    5740 kernel/trace/trace_events_hist.c 			if (idx >= first_key_idx)