238dd3209a
statclock based on profhz when profiling is enabled MD, since most platforms don't use this anyway. This removes the need for statclock_process, whose only purpose was to subdivide profhz, and gets the profiling clock running outside of sched_lock on platforms that implement suswintr. Also changed the interface for starting and stopping the profiling clock to do just that, instead of changing the rate of statclock, since they can now be separate. Reviewed by: jhb, tmm Tested on: i386, sparc64
52 lines
1.0 KiB
C
52 lines
1.0 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 pscnt;
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extern int psdiv;
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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 uint64_t 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(int rate, void (*function)(struct clockframe *frame));
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int acquire_timer2(int mode);
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int release_timer0(void);
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int release_timer2(void);
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#ifndef PC98
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int rtcin(int val);
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#else
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int acquire_timer1(int mode);
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int release_timer1(void);
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#endif
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int sysbeep(int pitch, int period);
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void timer_restore(void);
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#endif /* _KERNEL */
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#endif /* !_MACHINE_CLOCK_H_ */
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