-/* list of externed timers */
-extern struct timer_opts timer_none;
-extern struct timer_opts timer_pit;
-extern struct timer_opts timer_tsc;
-#ifdef CONFIG_X86_CYCLONE_TIMER
-extern struct timer_opts timer_cyclone;
-#endif
-
-extern unsigned long calibrate_tsc(void);
-extern void init_cpu_khz(void);
-#ifdef CONFIG_HPET_TIMER
-extern struct timer_opts timer_hpet;
-extern unsigned long calibrate_tsc_hpet(unsigned long *tsc_hpet_quotient_ptr);
-#endif
-
-#ifdef CONFIG_X86_PM_TIMER
-extern struct timer_opts timer_pmtmr;
-#endif