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db2077f8e1
with system statistics monitoring tools (such as systat, vmstat...) because of stopping RTC interrupts generation. Restore all the timers (RTC and i8254) atomically. Reviewed by: bde MFC after: 1 week
51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
/*
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* Kernel interface to machine-dependent clock driver.
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* Garrett Wollman, September 1994.
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* This file is in the public domain.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_CLOCK_H_
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#define _MACHINE_CLOCK_H_
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#ifdef _KERNEL
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/*
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* i386 to clock driver interface.
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* XXX large parts of the driver and its interface are misplaced.
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*/
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extern int adjkerntz;
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extern int disable_rtc_set;
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extern int statclock_disable;
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extern u_int timer_freq;
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extern int timer0_max_count;
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extern u_int tsc_freq;
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extern int tsc_is_broken;
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extern int wall_cmos_clock;
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#ifdef APIC_IO
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extern int apic_8254_intr;
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#endif
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/*
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* Driver to clock driver interface.
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*/
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struct clockframe;
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int acquire_timer0 __P((int rate,
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void (*function)(struct clockframe *frame)));
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int acquire_timer2 __P((int mode));
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int release_timer0 __P((void));
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int release_timer2 __P((void));
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#ifndef PC98
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int rtcin __P((int val));
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#else
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int acquire_timer1 __P((int mode));
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int release_timer1 __P((void));
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#endif
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int sysbeep __P((int pitch, int period));
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void timer_restore __P((void));
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#endif /* _KERNEL */
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#endif /* !_MACHINE_CLOCK_H_ */
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