btf__dedup
LIBBPF_API int btf__dedup(struct btf *btf, const struct btf_dedup_opts *opts);
err = btf__dedup(linker->btf, &opts);
err = btf__dedup(test_btf, &test->opts);
err = btf__dedup(btf2, NULL);
err = btf__dedup(btf2, NULL);
err = btf__dedup(btf1, NULL);
err = btf__dedup(btf2, NULL);
err = btf__dedup(btf2, NULL);