-extern uint32_t *base_page_dir;
-
-/* -o mlfqs:
- If false (default), use round-robin scheduler.
- If true, use multi-level feedback queue scheduler. */
-extern bool enable_mlfqs;
-
-#ifdef VM
-/* -o random-paging:
- If false (default), use LRU page replacement policy.
- If true, use random page replacement policy. */
-extern bool enable_random_paging;
-#endif
-
-/* -q: Power off when kernel tasks complete? */
-extern bool power_off_when_done;
-
-void power_off (void) NO_RETURN;