172 				 Elf64_Sym *sym, const char *sym_name, int src_sym_idx);
1260 	const char *sym_name;  in linker_append_elf_syms()  local
1273 		sym_name = elf_strptr(obj->elf, str_sec_idx, sym->st_name);  in linker_append_elf_syms()
1274 		if (!sym_name) {  in linker_append_elf_syms()
1279 		err = linker_append_elf_sym(linker, obj, sym, sym_name, i);  in linker_append_elf_syms()
1295 static struct glob_sym *find_glob_sym(struct bpf_linker *linker, const char *sym_name)  in find_glob_sym()  argument
1305 		if (strcmp(name, sym_name) == 0)  in find_glob_sym()
1331 static bool glob_sym_btf_matches(const char *sym_name, bool exact,  in glob_sym_btf_matches()  argument
1351 				sym_name, n1, n2);  in glob_sym_btf_matches()
1361 				sym_name, btf_kflag(t1) ? "union" : "struct", btf_kind_str(t2));  in glob_sym_btf_matches()
1368 				sym_name, btf_kflag(t2) ? "union" : "struct", btf_kind_str(t1));  in glob_sym_btf_matches()
1375 			sym_name, btf_kind_str(t1), btf_kind_str(t2));  in glob_sym_btf_matches()
1391 				sym_name, btf_kind_str(t1), n1, n2);  in glob_sym_btf_matches()
1410 				sym_name, btf_kind_str(t1), n1, t1->size, t2->size);  in glob_sym_btf_matches()
1433 			pr_warn("global '%s': incompatible func '%s' linkage\n", sym_name, n1);  in glob_sym_btf_matches()
1445 			pr_warn("global '%s': incompatible var '%s' linkage\n", sym_name, n1);  in glob_sym_btf_matches()
1461 				sym_name, btf_kind_str(t1), btf_vlen(t1), btf_vlen(t2));  in glob_sym_btf_matches()
1473 					sym_name, i, n1, n2);  in glob_sym_btf_matches()
1478 					sym_name, i, n1);  in glob_sym_btf_matches()
1481 			if (!glob_sym_btf_matches(sym_name, exact, btf1, m1->type, btf2, m2->type))  in glob_sym_btf_matches()
1492 				sym_name, btf_kind_str(t1), btf_vlen(t1), btf_vlen(t2));  in glob_sym_btf_matches()
1501 			if (!glob_sym_btf_matches(sym_name, exact, btf1, m1->type, btf2, m2->type))  in glob_sym_btf_matches()
1520 			sym_name, btf_kind_str(t1));  in glob_sym_btf_matches()
1525 static bool map_defs_match(const char *sym_name,  in map_defs_match()  argument
1550 	     && !glob_sym_btf_matches(sym_name, true /*exact*/,  in map_defs_match()
1567 	     && !glob_sym_btf_matches(sym_name, true /*exact*/,  in map_defs_match()
1599 		snprintf(inner_map_name, sizeof(inner_map_name), "%s.inner", sym_name);  in map_defs_match()
1609 	pr_warn("global '%s': map %s mismatch\n", sym_name, reason);  in map_defs_match()
1613 static bool glob_map_defs_match(const char *sym_name,  in glob_map_defs_match()  argument
1624 		pr_warn("global '%s': invalid map definition type [%d]\n", sym_name, btf_id);  in glob_map_defs_match()
1629 	err = parse_btf_map_def(sym_name, obj->btf, t, true /*strict*/, &src_def, &src_inner_def);  in glob_map_defs_match()
1631 		pr_warn("global '%s': invalid map definition\n", sym_name);  in glob_map_defs_match()
1638 	err = parse_btf_map_def(sym_name, linker->btf, t, true /*strict*/, &dst_def, &dst_inner_def);  in glob_map_defs_match()
1641 		pr_warn("global '%s': invalid dst map definition\n", sym_name);  in glob_map_defs_match()
1649 	return map_defs_match(sym_name, linker->btf, &dst_def, &dst_inner_def,  in glob_map_defs_match()
1653 static bool glob_syms_match(const char *sym_name,  in glob_syms_match()  argument
1663 		pr_warn("BTF info is missing for global symbol '%s'\n", sym_name);  in glob_syms_match()
1670 			btf_kind_str(src_t), sym_name);  in glob_syms_match()
1676 		return glob_map_defs_match(sym_name, linker, glob_sym, obj, sym, btf_id);  in glob_syms_match()
1678 	if (!glob_sym_btf_matches(sym_name, true /*exact*/,  in glob_syms_match()
1691 static int find_glob_sym_btf(struct src_obj *obj, Elf64_Sym *sym, const char *sym_name,  in find_glob_sym_btf()  argument
1713 			if (strcmp(name, sym_name) != 0)  in find_glob_sym_btf()
1729 			if (strcmp(name, sym_name) != 0)  in find_glob_sym_btf()
1738 					sym_name, btf_id, vi->type);  in find_glob_sym_btf()
1756 	pr_warn("failed to find BTF info for global/extern symbol '%s'\n", sym_name);  in find_glob_sym_btf()
1845 				 Elf64_Sym *sym, const char *sym_name, int src_sym_idx)  in linker_append_elf_sym()  argument
1883 	err = find_glob_sym_btf(obj, sym, sym_name, &btf_sec_id, &btf_id);  in linker_append_elf_sym()
1910 	glob_sym = find_glob_sym(linker, sym_name);  in linker_append_elf_sym()
1925 				src_sym_idx, sym_name, obj->filename);  in linker_append_elf_sym()
1929 		if (!glob_syms_match(sym_name, linker, glob_sym, obj, sym, src_sym_idx, btf_id))  in linker_append_elf_sym()
1997 	name_off = strset__add_str(linker->strtab_strs, sym_name);  in linker_append_elf_sym()
2136 				   int sym_type, const char *sym_name)  in find_sym_by_name()  argument
2154 		if (strcmp(sym_name, name) != 0)  in find_sym_by_name()