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x86: unify timex.h variants

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Combine the timex.h variants and move the TSC related code into tsc.h.
Move the set_cyc2ns_scale() call into the tsc calibraction code, where
it belongs.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
This commit is contained in:
Thomas Gleixner 2007-10-12 23:04:23 +02:00 committed by Thomas Gleixner
parent 5d5a2989b7
commit 2f0798a3b1
6 changed files with 24 additions and 63 deletions
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1
arch/x86/kernel/time_64.c
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@ -328,7 +328,6 @@ void __init time_init(void)
else
vgetcpu_mode = VGETCPU_LSL;
set_cyc2ns_scale(tsc_khz);
printk(KERN_INFO "time.c: Detected %d.%03d MHz processor.\n",
cpu_khz / 1000, cpu_khz % 1000);
init_tsc_clocksource();

3
arch/x86/kernel/tsc_64.c
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@ -20,7 +20,7 @@ EXPORT_SYMBOL(tsc_khz);
static unsigned int cyc2ns_scale __read_mostly;
void set_cyc2ns_scale(unsigned long khz)
static inline void set_cyc2ns_scale(unsigned long khz)
{
cyc2ns_scale = (NSEC_PER_MSEC << NS_SCALE) / khz;
}
@ -206,6 +206,7 @@ void __init tsc_calibrate(void)
}
tsc_khz = tsc2 / tsc1;
set_cyc2ns_scale(tsc_khz);
}
/*

19
include/asm-x86/timex.h
View File

@ -1,5 +1,18 @@
#ifdef CONFIG_X86_32
# include "timex_32.h"
/* x86 architecture timex specifications */
#ifndef _ASM_X86_TIMEX_H
#define _ASM_X86_TIMEX_H
#include <asm/processor.h>
#include <asm/tsc.h>
#ifdef CONFIG_X86_ELAN
# define PIT_TICK_RATE 1189200 /* AMD Elan has different frequency! */
#else
# include "timex_64.h"
# define PIT_TICK_RATE 1193182 /* Underlying HZ */
#endif
#define CLOCK_TICK_RATE PIT_TICK_RATE
extern int read_current_timer(unsigned long *timer_value);
#define ARCH_HAS_READ_CURRENT_TIMER 1
#endif

22
include/asm-x86/timex_32.h
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@ -1,22 +0,0 @@
/*
* linux/include/asm-i386/timex.h
*
* i386 architecture timex specifications
*/
#ifndef _ASMi386_TIMEX_H
#define _ASMi386_TIMEX_H
#include <asm/processor.h>
#include <asm/tsc.h>
#ifdef CONFIG_X86_ELAN
# define PIT_TICK_RATE 1189200 /* AMD Elan has different frequency! */
#else
# define PIT_TICK_RATE 1193182 /* Underlying HZ */
#endif
#define CLOCK_TICK_RATE PIT_TICK_RATE
extern int read_current_timer(unsigned long *timer_value);
#define ARCH_HAS_READ_CURRENT_TIMER 1
#endif

31
include/asm-x86/timex_64.h
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@ -1,31 +0,0 @@
/*
* linux/include/asm-x86_64/timex.h
*
* x86-64 architecture timex specifications
*/
#ifndef _ASMx8664_TIMEX_H
#define _ASMx8664_TIMEX_H
#include <asm/msr.h>
#include <asm/vsyscall.h>
#include <asm/system.h>
#include <asm/processor.h>
#include <asm/tsc.h>
#include <linux/compiler.h>
#define PIT_TICK_RATE 1193182UL
#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(char *msg);
extern void set_cyc2ns_scale(unsigned long khz);
#endif

11
include/asm-x86/tsc.h
View File

@ -1,13 +1,14 @@
/*
* linux/include/asm-i386/tsc.h
*
* i386 TSC related functions
* x86 TSC related functions
*/
#ifndef _ASM_i386_TSC_H
#define _ASM_i386_TSC_H
#ifndef _ASM_X86_TSC_H
#define _ASM_X86_TSC_H
#include <asm/processor.h>
#define NS_SCALE 10 /* 2^10, carefully chosen */
#define US_SCALE 32 /* 2^32, arbitralrily chosen */
/*
* Standard way to access the cycle counter.
*/