890 static int check_map_func_compatibility(struct bpf_map *map, int func_id)  in check_map_func_compatibility()  argument
898 		if (func_id != BPF_FUNC_tail_call)  in check_map_func_compatibility()
902 		if (func_id != BPF_FUNC_perf_event_read &&  in check_map_func_compatibility()
903 		    func_id != BPF_FUNC_perf_event_output)  in check_map_func_compatibility()
911 	switch (func_id) {  in check_map_func_compatibility()
928 		map->map_type, func_id);  in check_map_func_compatibility()
932 static int check_call(struct verifier_env *env, int func_id)  in check_call()  argument
942 	if (func_id < 0 || func_id >= __BPF_FUNC_MAX_ID) {  in check_call()
943 		verbose("invalid func %d\n", func_id);  in check_call()
948 		fn = env->prog->aux->ops->get_func_proto(func_id);  in check_call()
951 		verbose("unknown func %d\n", func_id);  in check_call()
1003 			fn->ret_type, func_id);  in check_call()
1007 	err = check_map_func_compatibility(map, func_id);  in check_call()