tsc.c File Reference

#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/timer.h>
#include <linux/acpi_pmtmr.h>
#include <linux/cpufreq.h>
#include <linux/delay.h>
#include <linux/clocksource.h>
#include <linux/percpu.h>
#include <linux/timex.h>
#include <asm/hpet.h>
#include <asm/timer.h>
#include <asm/vgtod.h>
#include <asm/time.h>
#include <asm/delay.h>
#include <asm/hypervisor.h>
#include <asm/nmi.h>
#include <asm/x86_init.h>

Go to the source code of this file.

Macros
#define	pr_fmt(fmt)   KBUILD_MODNAME ": " fmt
#define	MAX_RETRIES   5
#define	SMI_TRESHOLD   50000
#define	CAL_MS   10
#define	CAL_LATCH   (PIT_TICK_RATE / (1000 / CAL_MS))
#define	CAL_PIT_LOOPS   1000
#define	CAL2_MS   50
#define	CAL2_LATCH   (PIT_TICK_RATE / (1000 / CAL2_MS))
#define	CAL2_PIT_LOOPS   5000
#define	MAX_QUICK_PIT_MS   50
#define	MAX_QUICK_PIT_ITERATIONS   (MAX_QUICK_PIT_MS * PIT_TICK_RATE / 1000 / 256)

Functions
	EXPORT_SYMBOL (cpu_khz)
	EXPORT_SYMBOL (tsc_khz)
u64	native_sched_clock (void)
unsigned long long	sched_clock (void)
	EXPORT_SYMBOL_GPL (check_tsc_unstable)
int __init	notsc_setup (char *str)
	__setup ("notsc", notsc_setup)
	__setup ("tsc=", tsc_setup)
unsigned long	native_calibrate_tsc (void)
int	recalibrate_cpu_khz (void)
	EXPORT_SYMBOL (recalibrate_cpu_khz)
	DEFINE_PER_CPU (unsigned long, cyc2ns)
	DEFINE_PER_CPU (unsigned long long, cyc2ns_offset)
void	tsc_save_sched_clock_state (void)
void	tsc_restore_sched_clock_state (void)
void	mark_tsc_unstable (char *reason)
	EXPORT_SYMBOL_GPL (mark_tsc_unstable)
__cpuinit int	unsynchronized_tsc (void)
	device_initcall (init_tsc_clocksource)
void __init	tsc_init (void)

Variables
unsigned int __read_mostly	cpu_khz
unsigned int __read_mostly	tsc_khz
int	tsc_clocksource_reliable

Macro Definition Documentation

#define CAL2_LATCH   (PIT_TICK_RATE / (1000 / CAL2_MS))

Definition at line 186 of file tsc.c.

#define CAL2_MS   50

Definition at line 185 of file tsc.c.

#define CAL2_PIT_LOOPS   5000

Definition at line 187 of file tsc.c.

#define CAL_LATCH   (PIT_TICK_RATE / (1000 / CAL_MS))

Definition at line 182 of file tsc.c.

#define CAL_MS   10

Definition at line 181 of file tsc.c.

#define CAL_PIT_LOOPS   1000

Definition at line 183 of file tsc.c.

#define MAX_QUICK_PIT_ITERATIONS   (MAX_QUICK_PIT_MS * PIT_TICK_RATE / 1000 / 256)

Definition at line 319 of file tsc.c.

#define MAX_QUICK_PIT_MS   50

Definition at line 318 of file tsc.c.

#define MAX_RETRIES   5

Definition at line 120 of file tsc.c.

#define pr_fmt

(

fmt

)

KBUILD_MODNAME ": " fmt

Definition at line 1 of file tsc.c.

#define SMI_TRESHOLD   50000

Definition at line 121 of file tsc.c.

Function Documentation

__setup	(	"notsc"	,
		notsc_setup
	)

__setup

(

)

DEFINE_PER_CPU	(	unsigned	long,
		cyc2ns
	)

DEFINE_PER_CPU	(	unsigned long	long,
		cyc2ns_offset
	)

device_initcall

(

init_tsc_clocksource

)

EXPORT_SYMBOL

(

cpu_khz

)

EXPORT_SYMBOL

(

tsc_khz

)

EXPORT_SYMBOL

(

recalibrate_cpu_khz

)

EXPORT_SYMBOL_GPL

(

check_tsc_unstable

)

EXPORT_SYMBOL_GPL

(

mark_tsc_unstable

)

void mark_tsc_unstable

(

char *

reason

)

Definition at line 780 of file tsc.c.

unsigned long native_calibrate_tsc

(

void

)

native_calibrate_tsc - calibrate the tsc on boot

Definition at line 403 of file tsc.c.

u64 native_sched_clock

(

void

)

Definition at line 44 of file tsc.c.

int __init notsc_setup

(

char *

str

)

Definition at line 98 of file tsc.c.

int recalibrate_cpu_khz

(

void

)

Definition at line 558 of file tsc.c.

unsigned long long sched_clock

(

void

)

Definition at line 77 of file tsc.c.

void __init tsc_init

(

void

)

Definition at line 953 of file tsc.c.

void tsc_restore_sched_clock_state

(

void

)

Definition at line 647 of file tsc.c.

void tsc_save_sched_clock_state

(

void

)

Definition at line 631 of file tsc.c.

__cpuinit int unsynchronized_tsc

(

void

)

Definition at line 819 of file tsc.c.

Variable Documentation

unsigned int __read_mostly cpu_khz

Definition at line 24 of file tsc.c.

int tsc_clocksource_reliable

Definition at line 40 of file tsc.c.

unsigned int __read_mostly tsc_khz

Definition at line 27 of file tsc.c.