btf_parse_fields
struct btf_record *btf_parse_fields(const struct btf *btf, const struct btf_type *t,
record = btf_parse_fields(btf, t, BPF_SPIN_LOCK | BPF_RES_SPIN_LOCK | BPF_LIST_HEAD | BPF_LIST_NODE |
map->record = btf_parse_fields(btf, value_type,