bpf/resolve_btfids/main.c

10  * __BTF_ID__<type>__<symbol>[__<id>]
105 		int	 id;
180 	struct btf_id *id;
184 		id = rb_entry(p, struct btf_id, rb_node);
185 		cmp = strcmp(id->name, name);
191 			return id;
201 	struct btf_id *id;
206 		id = rb_entry(parent, struct btf_id, rb_node);
207 		cmp = strcmp(id->name, name);
213 			return unique ? NULL : id;
216 	id = zalloc(sizeof(*id));
217 	if (id) {
219 		id->name = name;
220 		rb_link_node(&id->rb_node, parent, p);
221 		rb_insert_color(&id->rb_node, root);
223 	return id;
235 	char *p, *id;
240 	id = strdup(prefix_end + pos);
241 	if (id) {
244 		 * id =            ^
246 		 * cut the unique id part
248 		p = strrchr(id, '_');
251 			free(id);
256 	return id;
264 	 * id   =         ^
266 	char *id = name + (is_set8 ? sizeof(BTF_SET8 "__") : sizeof(BTF_SET "__")) - 1;
269 	if (id >= name + len) {
274 	return btf_id__add(&obj->sets, id, true);
279 	char *id;
281 	id = get_id(name + size);
282 	if (!id) {
287 	return btf_id__add(root, id, false);
443 		struct btf_id *id;
467 			id = add_symbol(&obj->structs, prefix, sizeof(BTF_STRUCT) - 1);
471 			id = add_symbol(&obj->unions, prefix, sizeof(BTF_UNION) - 1);
475 			id = add_symbol(&obj->typedefs, prefix, sizeof(BTF_TYPEDEF) - 1);
479 			id = add_symbol(&obj->funcs, prefix, sizeof(BTF_FUNC) - 1);
482 			id = add_set(obj, prefix, true);
488 			if (id) {
489 				id->cnt = sym.st_size / sizeof(uint64_t) - 1;
490 				id->is_set8 = true;
494 			id = add_set(obj, prefix, false);
500 			if (id) {
501 				id->cnt = sym.st_size / sizeof(int) - 1;
502 				id->is_set = true;
509 		if (!id)
512 		if (id->addr_cnt >= ADDR_CNT) {
514 				id->name);
517 		id->addr[id->addr_cnt++] = sym.st_value;
561 		struct btf_id *id;
594 		id = btf_id__find(root, str);
595 		if (id) {
596 			if (id->id) {
598 					str, id->id, type_id, id->id);
600 				id->id = type_id;
613 static int id_patch(struct object *obj, struct btf_id *id)
619 	/* For set, set8, id->id may be 0 */
620 	if (!id->id && !id->is_set && !id->is_set8)
621 		pr_err("WARN: resolve_btfids: unresolved symbol %s\n", id->name);
623 	for (i = 0; i < id->addr_cnt; i++) {
624 		unsigned long addr = id->addr[i];
628 			 idx, id->id, id->name);
637 		ptr[idx] = id->id;
646 	struct btf_id *id;
650 		id = rb_entry(next, struct btf_id, rb_node);
652 		if (id_patch(obj, id))
677 		struct btf_id *id;
679 		id   = rb_entry(next, struct btf_id, rb_node);
680 		addr = id->addr[0];
684 		if (id->addr_cnt != 1) {
686 				id->name);
690 		if (id->is_set) {
696 			 * Make sure id is at the beginning of the pairs
699 			BUILD_BUG_ON(set8->pairs != &set8->pairs[0].id);
722 			 off, id->is_set ? set->cnt : set8->cnt, id->name);