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File: [Development] / linux-2.6-xfs / include / asm-x86_64 / Attic / timex.h (download)

Revision 1.2, Thu Jan 29 19:23:16 2004 UTC (13 years, 9 months ago) by nathans
Branch: MAIN
Changes since 1.1: +1 -28 lines 

Merge up to 2.6.2-rc2

/*
 * linux/include/asm-x86_64/timex.h
 *
 * x86-64 architecture timex specifications
 */
#ifndef _ASMx8664_TIMEX_H
#define _ASMx8664_TIMEX_H

#include <linux/config.h>
#include <asm/msr.h>
#include <asm/vsyscall.h>
#include <asm/hpet.h>

#define CLOCK_TICK_RATE	1193182 /* Underlying HZ */
#define CLOCK_TICK_FACTOR	20	/* Factor of both 1000000 and CLOCK_TICK_RATE */
#define FINETUNE ((((((int)LATCH * HZ - CLOCK_TICK_RATE) << SHIFT_HZ) * \
	(1000000/CLOCK_TICK_FACTOR) / (CLOCK_TICK_RATE/CLOCK_TICK_FACTOR)) \
		<< (SHIFT_SCALE-SHIFT_HZ)) / HZ)

typedef unsigned long long cycles_t;

extern cycles_t cacheflush_time;

static inline cycles_t get_cycles (void)
{
	unsigned long long ret;

	rdtscll(ret);
	return ret;
}

extern unsigned int cpu_khz;

extern struct vxtime_data vxtime;

#endif