141 	struct btf *base_btf;  member
385 	if (btf->base_btf && btf->hdr.str_len == 0)  in btf_parse_str_sec()
391 	if (!btf->base_btf && start[0]) {  in btf_parse_str_sec()
429 		struct btf *base_btf = btf->base_btf;  in btf_type_size_unknown()  local
431 		if (base_btf) {  in btf_type_size_unknown()
432 			l = base_btf->layout;  in btf_type_size_unknown()
433 			l_cnt = base_btf->hdr.layout_len / sizeof(struct btf_layout);  in btf_type_size_unknown()
785 	return btf->base_btf;  in btf__base_btf()
794 		return btf_type_by_id(btf->base_btf, type_id);  in btf_type_by_id()
824 	if (btf->base_btf && btf->base_btf->ptr_sz > 0)  in determine_ptr_size()
825 		return btf->base_btf->ptr_sz;  in determine_ptr_size()
1119 		id = btf_find_by_name_kind(btf->base_btf, start_id,  in btf_find_by_name_kind()
1212 		btf__free(btf->base_btf);  in btf__free()
1219 	struct btf *base_btf = OPTS_GET(opts, base_btf, NULL);  in btf_new_empty()  local
1235 	if (base_btf) {  in btf_new_empty()
1236 		btf->base_btf = base_btf;  in btf_new_empty()
1237 		btf->start_id = btf__type_cnt(base_btf);  in btf_new_empty()
1238 		btf->start_str_off = base_btf->hdr.str_len + base_btf->start_str_off;  in btf_new_empty()
1239 		btf->swapped_endian = base_btf->swapped_endian;  in btf_new_empty()
1243 	btf->raw_size = sizeof(struct btf_header) + (base_btf ? 0 : 1);  in btf_new_empty()
1259 	hdr->str_len = base_btf ? 0 : 1; /* empty string at offset 0 */  in btf_new_empty()
1283 struct btf *btf__new_empty_split(struct btf *base_btf)  in btf__new_empty_split()  argument
1287 	opts.base_btf = base_btf;  in btf__new_empty_split()
1300 static struct btf *btf_new(const void *data, __u32 size, struct btf *base_btf, bool is_mmap)  in btf_new()  argument
1315 	if (base_btf) {  in btf_new()
1316 		btf->base_btf = base_btf;  in btf_new()
1317 		btf->start_id = btf__type_cnt(base_btf);  in btf_new()
1318 		btf->start_str_off = base_btf->hdr.str_len + base_btf->start_str_off;  in btf_new()
1364 struct btf *btf__new_split(const void *data, __u32 size, struct btf *base_btf)  in btf__new_split()  argument
1366 	return libbpf_ptr(btf_new(data, size, base_btf, false));  in btf__new_split()
1447 static struct btf *btf_parse_elf(const char *path, struct btf *base_btf,  in btf_parse_elf()  argument
1496 		      dist_base_btf ?: base_btf, false);  in btf_parse_elf()
1501 	if (dist_base_btf && base_btf) {  in btf_parse_elf()
1502 		err = btf__relocate(btf, base_btf);  in btf_parse_elf()
1554 struct btf *btf__parse_elf_split(const char *path, struct btf *base_btf)  in btf__parse_elf_split()  argument
1556 	return libbpf_ptr(btf_parse_elf(path, base_btf, NULL));  in btf__parse_elf_split()
1559 static struct btf *btf_parse_raw(const char *path, struct btf *base_btf)  in btf_parse_raw()  argument
1613 	btf = btf_new(data, sz, base_btf, false);  in btf_parse_raw()
1627 struct btf *btf__parse_raw_split(const char *path, struct btf *base_btf)  in btf__parse_raw_split()  argument
1629 	return libbpf_ptr(btf_parse_raw(path, base_btf));  in btf__parse_raw_split()
1632 static struct btf *btf_parse_raw_mmap(const char *path, struct btf *base_btf)  in btf_parse_raw_mmap()  argument
1656 	btf = btf_new(data, st.st_size, base_btf, true);  in btf_parse_raw_mmap()
1663 static struct btf *btf_parse(const char *path, struct btf *base_btf, struct btf_ext **btf_ext)  in btf_parse()  argument
1671 	btf = btf_parse_raw(path, base_btf);  in btf_parse()
1677 	return btf_parse_elf(path, base_btf, btf_ext);  in btf_parse()
1685 struct btf *btf__parse_split(const char *path, struct btf *base_btf)  in btf__parse_split()  argument
1687 	return libbpf_ptr(btf_parse(path, base_btf, NULL));  in btf__parse_split()
1881 		return btf__str_by_offset(btf->base_btf, offset);  in btf__str_by_offset()
1893 struct btf *btf_get_from_fd(int btf_fd, struct btf *base_btf)  in btf_get_from_fd()  argument
1940 	btf = btf_new(ptr, btf_info.btf_size, base_btf, false);  in btf_get_from_fd()
1947 struct btf *btf_load_from_kernel(__u32 id, struct btf *base_btf, int token_fd)  in btf_load_from_kernel()  argument
1962 	btf = btf_get_from_fd(btf_fd, base_btf);  in btf_load_from_kernel()
1968 struct btf *btf__load_from_kernel_by_id_split(__u32 id, struct btf *base_btf)  in btf__load_from_kernel_by_id_split()  argument
1970 	return btf_load_from_kernel(id, base_btf, 0);  in btf__load_from_kernel_by_id_split()
2043 	if (!btf->base_btf && btf->hdr.str_len == 1)  in btf_ensure_modifiable()
2071 	if (btf->base_btf) {  in btf__find_str()
2072 		off = btf__find_str(btf->base_btf, s);  in btf__find_str()
2099 	if (btf->base_btf) {  in btf__add_str()
2100 		off = btf__find_str(btf->base_btf, s);  in btf__add_str()
2255 	if (src_btf->base_btf && src_btf->base_btf != btf->base_btf)  in btf__add_btf()
2258 	src_start_id = src_btf->base_btf ? btf__type_cnt(src_btf->base_btf) : 1;  in btf__add_btf()
4183 	if (d->btf->base_btf) {  in strs_dedup_remap_str_off()
4184 		err = btf__find_str(d->btf->base_btf, s);  in strs_dedup_remap_str_off()
4225 	if (!d->btf->base_btf) {  in btf_dedup_strings()
4576 	if (!d->btf->base_btf)  in btf_dedup_prep()
6230 void btf_set_base_btf(struct btf *btf, const struct btf *base_btf)  in btf_set_base_btf()  argument
6232 	btf->base_btf = (struct btf *)base_btf;  in btf_set_base_btf()
6233 	btf->start_id = btf__type_cnt(base_btf);  in btf_set_base_btf()
6234 	btf->start_str_off = base_btf->hdr.str_len + base_btf->start_str_off;  in btf_set_base_btf()
6237 int btf__relocate(struct btf *btf, const struct btf *base_btf)  in btf__relocate()  argument
6239 	int err = btf_relocate(btf, base_btf, NULL);  in btf__relocate()