bpf_map_alloc_pages
int bpf_map_alloc_pages(const struct bpf_map *map, int nid,
err = bpf_map_alloc_pages(&arena->map, NUMA_NO_NODE, 1, &arena->scratch_page);
ret = bpf_map_alloc_pages(map, NUMA_NO_NODE, 1, &page);
ret = bpf_map_alloc_pages(&arena->map, node_id, this_batch, pages);