242 	struct btf *base_btf;  member
512 		btf = btf->base_btf;  in btf_nr_types()
732 		btf = btf->base_btf;  in btf_name_offset_valid()
752 		btf = btf->base_btf;  in btf_str_by_offset()
814 		btf = btf->base_btf;  in btf_type_by_id()
1560 			if (!btf->base_btf) {  in btf_add_type()
1907 		btf = btf->base_btf;  in btf_resolved_type_id()
1923 		btf = btf->base_btf;  in btf_resolved_type_size()
4612 	env->log_type_id = btf->base_btf ? btf->start_id : 1;  in btf_check_all_metas()
4715 	for (i = btf->base_btf ? 0 : 1; i < btf->nr_types; i++) {  in btf_check_all_types()
4748 	if (!env->btf->base_btf && !hdr->type_len) {  in btf_parse_type_sec()
4777 	if (btf->base_btf && !hdr->str_len)  in btf_parse_str_sec()
4783 	if (!btf->base_btf && start[0]) {  in btf_parse_str_sec()
4913 	if (!btf->base_btf && btf_data_size == hdr->hdr_len) {  in btf_parse_hdr()
5238 	struct btf *btf = NULL, *base_btf;  in btf_parse_module()  local
5241 	base_btf = bpf_get_btf_vmlinux();  in btf_parse_module()
5242 	if (IS_ERR(base_btf))  in btf_parse_module()
5243 		return base_btf;  in btf_parse_module()
5244 	if (!base_btf)  in btf_parse_module()
5261 	btf->base_btf = base_btf;  in btf_parse_module()
5262 	btf->start_id = base_btf->nr_types;  in btf_parse_module()
5263 	btf->start_str_off = base_btf->hdr.str_len;  in btf_parse_module()
5289 	err = btf_check_type_tags(env, btf, btf_nr_types(base_btf));  in btf_parse_module()