bpf: add bpffs pretty print for program array map

		fd_array_map_delete_elem(map, &i);

}

static void prog_array_map_seq_show_elem(struct bpf_map *map, void *key,

					 struct seq_file *m)

{

	void **elem, *ptr;

	u32 prog_id;

	rcu_read_lock();

	elem = array_map_lookup_elem(map, key);

	if (elem) {

		ptr = READ_ONCE(*elem);

		if (ptr) {

			seq_printf(m, "%u: ", *(u32 *)key);

			prog_id = prog_fd_array_sys_lookup_elem(ptr);

			btf_type_seq_show(map->btf, map->btf_value_type_id,

					  &prog_id, m);

			seq_puts(m, "\n");

		}

	}

	rcu_read_unlock();

}

const struct bpf_map_ops prog_array_map_ops = {

	.map_alloc_check = fd_array_map_alloc_check,

	.map_alloc = array_map_alloc,

	.map_fd_put_ptr = prog_fd_array_put_ptr,

	.map_fd_sys_lookup_elem = prog_fd_array_sys_lookup_elem,

	.map_release_uref = bpf_fd_array_map_clear,

	.map_check_btf = map_check_no_btf,

	.map_seq_show_elem = prog_array_map_seq_show_elem,

};

static struct bpf_event_entry *bpf_event_entry_gen(struct file *perf_file,