#else
#define print_disk_util(dus, agg, terse)
#define show_disk_util(terse)
#define free_disk_util()
#define init_disk_util(td)
#else
#define print_disk_util(dus, agg, terse)
#define show_disk_util(terse)
#define free_disk_util()
#define init_disk_util(td)