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yaml
---
r: 79961
b: refs/heads/master
c: ee238e5
h: refs/heads/master
i:
  79959: af0cbbc
v: v3
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Glauber de Oliveira Costa authored and Ingo Molnar committed Jan 30, 2008
1 parent 2fde364 commit a5fafd4
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Showing 3 changed files with 31 additions and 9 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 49a697871e2edcbc9cc682466bc4f2316b854d23
refs/heads/master: ee238e5ca66858f80170f87724f84d67183b069a
12 changes: 9 additions & 3 deletions trunk/arch/x86/kernel/time_64.c
Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,8 @@
#include <asm/hpet.h>
#include <asm/nmi.h>
#include <asm/vgtod.h>
#include <asm/time.h>
#include <asm/timer.h>

volatile unsigned long __jiffies __section_jiffies = INITIAL_JIFFIES;

Expand Down Expand Up @@ -54,7 +56,7 @@ static irqreturn_t timer_event_interrupt(int irq, void *dev_id)
/* calibrate_cpu is used on systems with fixed rate TSCs to determine
* processor frequency */
#define TICK_COUNT 100000000
static unsigned int __init tsc_calibrate_cpu_khz(void)
unsigned long __init native_calculate_cpu_khz(void)
{
int tsc_start, tsc_now;
int i, no_ctr_free;
Expand Down Expand Up @@ -104,20 +106,23 @@ static struct irqaction irq0 = {
.name = "timer"
};

void __init time_init(void)
void __init hpet_time_init(void)
{
if (!hpet_enable())
setup_pit_timer();

setup_irq(0, &irq0);
}

void __init time_init(void)
{
tsc_calibrate();

cpu_khz = tsc_khz;
if (cpu_has(&boot_cpu_data, X86_FEATURE_CONSTANT_TSC) &&
boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
boot_cpu_data.x86 == 16)
cpu_khz = tsc_calibrate_cpu_khz();
cpu_khz = calculate_cpu_khz();

if (unsynchronized_tsc())
mark_tsc_unstable("TSCs unsynchronized");
Expand All @@ -130,4 +135,5 @@ void __init time_init(void)
printk(KERN_INFO "time.c: Detected %d.%03d MHz processor.\n",
cpu_khz / 1000, cpu_khz % 1000);
init_tsc_clocksource();
late_time_init = choose_time_init();
}
26 changes: 21 additions & 5 deletions trunk/include/asm-x86/time.h
Original file line number Diff line number Diff line change
@@ -1,8 +1,12 @@
#ifndef _ASMi386_TIME_H
#define _ASMi386_TIME_H
#ifndef _ASMX86_TIME_H
#define _ASMX86_TIME_H

extern void (*late_time_init)(void);
extern void hpet_time_init(void);

#include <linux/efi.h>
#include <asm/mc146818rtc.h>
#ifdef CONFIG_X86_32
#include <linux/efi.h>

static inline unsigned long native_get_wallclock(void)
{
Expand All @@ -28,8 +32,20 @@ static inline int native_set_wallclock(unsigned long nowtime)
return retval;
}

extern void (*late_time_init)(void);
extern void hpet_time_init(void);
#else
extern void native_time_init_hook(void);

static inline unsigned long native_get_wallclock(void)
{
return mach_get_cmos_time();
}

static inline int native_set_wallclock(unsigned long nowtime)
{
return mach_set_rtc_mmss(nowtime);
}

#endif

#ifdef CONFIG_PARAVIRT
#include <asm/paravirt.h>
Expand Down

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