hash_fn_for_key_as_id
btf_prog_table = hashmap__new(hash_fn_for_key_as_id,
btf_map_table = hashmap__new(hash_fn_for_key_as_id,
link_table = hashmap__new(hash_fn_for_key_as_id,
size_t hash_fn_for_key_as_id(long key, void *ctx);
map_table = hashmap__new(hash_fn_for_key_as_id,
*map = hashmap__new(hash_fn_for_key_as_id, equal_fn_for_key_as_id, NULL);
prog_table = hashmap__new(hash_fn_for_key_as_id,