33 lines
831 B
C
33 lines
831 B
C
/*
|
|
* linux/include/asm-x86_64/timex.h
|
|
*
|
|
* x86-64 architecture timex specifications
|
|
*/
|
|
#ifndef _ASMx8664_TIMEX_H
|
|
#define _ASMx8664_TIMEX_H
|
|
|
|
#include <asm/8253pit.h>
|
|
#include <asm/msr.h>
|
|
#include <asm/vsyscall.h>
|
|
#include <asm/hpet.h>
|
|
#include <asm/system.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/tsc.h>
|
|
#include <linux/compiler.h>
|
|
|
|
#define CLOCK_TICK_RATE PIT_TICK_RATE /* Underlying HZ */
|
|
|
|
extern int read_current_timer(unsigned long *timer_value);
|
|
#define ARCH_HAS_READ_CURRENT_TIMER 1
|
|
|
|
#define USEC_PER_TICK (USEC_PER_SEC / HZ)
|
|
#define NSEC_PER_TICK (NSEC_PER_SEC / HZ)
|
|
#define FSEC_PER_TICK (FSEC_PER_SEC / HZ)
|
|
|
|
#define NS_SCALE 10 /* 2^10, carefully chosen */
|
|
#define US_SCALE 32 /* 2^32, arbitralrily chosen */
|
|
|
|
extern void mark_tsc_unstable(void);
|
|
extern void set_cyc2ns_scale(unsigned long khz);
|
|
#endif
|