c37e7bb5d2
In preparation for the x86_64 generic time conversion, this patch splits out TSC and HPET related code from arch/x86_64/kernel/time.c into respective hpet.c and tsc.c files. [akpm@osdl.org: fix printk timestamps] [akpm@osdl.org: cleanup] Signed-off-by: John Stultz <johnstul@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@muc.de> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
36 lines
944 B
C
36 lines
944 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 struct vxtime_data vxtime;
|
|
|
|
extern unsigned int do_gettimeoffset_hpet(void);
|
|
extern unsigned int do_gettimeoffset_tsc(void);
|
|
extern void set_cyc2ns_scale(unsigned long khz);
|
|
extern int notsc;
|
|
#endif
|