tracing_map_cmp_none 5191 kernel/trace/trace_events_hist.c 				cmp_fn = tracing_map_cmp_none;
tracing_map_cmp_none  169 kernel/trace/tracing_map.c 	tracing_map_cmp_fn_t fn = tracing_map_cmp_none;
tracing_map_cmp_none  264 kernel/trace/tracing_map.h extern int tracing_map_cmp_none(void *val_a, void *val_b);