97 	struct btf *base_btf;  member
264 	if (btf->base_btf && hdr->str_len == 0)  in btf_parse_str_sec()
270 	if (!btf->base_btf && start[0]) {  in btf_parse_str_sec()
430 	return btf->base_btf;  in btf__base_btf()
439 		return btf_type_by_id(btf->base_btf, type_id);  in btf_type_by_id()
456 	if (btf->base_btf && btf->base_btf->ptr_sz > 0)  in determine_ptr_size()
457 		return btf->base_btf->ptr_sz;  in determine_ptr_size()
744 static struct btf *btf_new_empty(struct btf *base_btf)  in btf_new_empty()  argument
759 	if (base_btf) {  in btf_new_empty()
760 		btf->base_btf = base_btf;  in btf_new_empty()
761 		btf->start_id = btf__get_nr_types(base_btf) + 1;  in btf_new_empty()
762 		btf->start_str_off = base_btf->hdr->str_len;  in btf_new_empty()
766 	btf->raw_size = sizeof(struct btf_header) + (base_btf ? 0 : 1);  in btf_new_empty()
780 	btf->hdr->str_len = base_btf ? 0 : 1; /* empty string at offset 0 */  in btf_new_empty()
790 struct btf *btf__new_empty_split(struct btf *base_btf)  in btf__new_empty_split()  argument
792 	return libbpf_ptr(btf_new_empty(base_btf));  in btf__new_empty_split()
795 static struct btf *btf_new(const void *data, __u32 size, struct btf *base_btf)  in btf_new()  argument
809 	if (base_btf) {  in btf_new()
810 		btf->base_btf = base_btf;  in btf_new()
811 		btf->start_id = btf__get_nr_types(base_btf) + 1;  in btf_new()
812 		btf->start_str_off = base_btf->hdr->str_len;  in btf_new()
850 static struct btf *btf_parse_elf(const char *path, struct btf *base_btf,  in btf_parse_elf()  argument
937 	btf = btf_new(btf_data->d_buf, btf_data->d_size, base_btf);  in btf_parse_elf()
982 struct btf *btf__parse_elf_split(const char *path, struct btf *base_btf)  in btf__parse_elf_split()  argument
984 	return libbpf_ptr(btf_parse_elf(path, base_btf, NULL));  in btf__parse_elf_split()
987 static struct btf *btf_parse_raw(const char *path, struct btf *base_btf)  in btf_parse_raw()  argument
1041 	btf = btf_new(data, sz, base_btf);  in btf_parse_raw()
1055 struct btf *btf__parse_raw_split(const char *path, struct btf *base_btf)  in btf__parse_raw_split()  argument
1057 	return libbpf_ptr(btf_parse_raw(path, base_btf));  in btf__parse_raw_split()
1060 static struct btf *btf_parse(const char *path, struct btf *base_btf, struct btf_ext **btf_ext)  in btf_parse()  argument
1068 	btf = btf_parse_raw(path, base_btf);  in btf_parse()
1074 	return btf_parse_elf(path, base_btf, btf_ext);  in btf_parse()
1082 struct btf *btf__parse_split(const char *path, struct btf *base_btf)  in btf__parse_split()  argument
1084 	return libbpf_ptr(btf_parse(path, base_btf, NULL));  in btf__parse_split()
1319 		return btf__str_by_offset(btf->base_btf, offset);  in btf__str_by_offset()
1331 struct btf *btf_get_from_fd(int btf_fd, struct btf *base_btf)  in btf_get_from_fd()  argument
1378 	btf = btf_new(ptr, btf_info.btf_size, base_btf);  in btf_get_from_fd()
1385 struct btf *btf__load_from_kernel_by_id_split(__u32 id, struct btf *base_btf)  in btf__load_from_kernel_by_id_split()  argument
1394 	btf = btf_get_from_fd(btf_fd, base_btf);  in btf__load_from_kernel_by_id_split()
1546 	if (!btf->base_btf && btf->hdr->str_len == 1)  in btf_ensure_modifiable()
1571 	if (btf->base_btf) {  in btf__find_str()
1572 		off = btf__find_str(btf->base_btf, s);  in btf__find_str()
1597 	if (btf->base_btf) {  in btf__add_str()
1598 		off = btf__find_str(btf->base_btf, s);  in btf__add_str()
3171 	if (d->btf->base_btf) {  in strs_dedup_remap_str_off()
3172 		err = btf__find_str(d->btf->base_btf, s);  in strs_dedup_remap_str_off()
3213 	if (!d->btf->base_btf) {  in btf_dedup_strings()
3513 	if (!d->btf->base_btf)  in btf_dedup_prep()