CSK_BIT_LEN
#define CSK_32ARRAY_SIZE DIV_ROUND_UP(CSK_BIT_LEN, 32)
DECLARE_BITMAP(csk_map, CSK_BIT_LEN);
bitmap_from_arr32(csk_map, csk32, CSK_BIT_LEN);
bitmap_complement(csk_map, csk_map, CSK_BIT_LEN);
return bitmap_print_to_pagebuf(1, buf, csk_map, CSK_BIT_LEN);