android_kernel_motorola_sm6225/include/asm-x86_64/timex.h
john stultz 7460ed2844 [PATCH] time: x86_64: re-enable vsyscall support for x86_64
Cleanup and re-enable vsyscall gettimeofday using the generic clocksource
infrastructure.

[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>
2007-02-16 08:14:00 -08:00

32 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