-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
-extern void account_process_vtime(struct task_struct *tsk);
-#else
-#define account_process_vtime(tsk) do { } while (0)
-#endif
-
-#if defined(CONFIG_VIRT_CPU_ACCOUNTING) && defined(CONFIG_PPC_SPLPAR)
-extern void calculate_steal_time(void);
-extern void snapshot_timebases(void);
-#else
-#define calculate_steal_time() do { } while (0)
-#define snapshot_timebases() do { } while (0)
-#endif
-