save_var_idx     3820 kernel/trace/trace_events_hist.c 	unsigned int i, save_var_idx;
save_var_idx     3835 kernel/trace/trace_events_hist.c 		save_var_idx = save_var->var.idx;
save_var_idx     3837 kernel/trace/trace_events_hist.c 		val = tracing_map_read_var(elt, save_var_idx);