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Prevent the TSC from being used on APM machines, we have no idea if

Browse Source 
it runs at a constant frequency.  This was less of an issue before,
because the TSC only interpolated in the HZ intervals, but now where
the timecounter is used all the way, this becomes much more visible.

Nit: Fix a printf which triggered the bde-filter.
This commit is contained in:
phk 1998-02-28 21:16:13 +00:00
parent 11ce6ce13a
commit 2004db6c2c
5 changed files with 30 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
sys/amd64/amd64/tsc.c
View File

@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)clock.c 7.2 (Berkeley) 5/12/91
* $Id: clock.c,v 1.112 1998/02/21 20:45:27 jkh Exp $
* $Id: clock.c,v 1.113 1998/02/23 00:11:25 bde Exp $
*/
/*
@ -49,6 +49,7 @@
*/
#include "opt_clock.h"
#include "apm.h"
#include <sys/param.h>
#include <sys/systm.h>
@ -633,9 +634,9 @@ calibrate_clocks(void)
tsc_freq = rdtsc();
if (bootverbose) {
printf("i8254 clock: %u Hz\n", tot_count);
if (tsc_present)
printf("TSC clock: %u Hz, ", tsc_freq);
printf("i8254 clock: %u Hz\n", tot_count);
}
return (tot_count);
@ -683,6 +684,9 @@ startrtclock()
#ifdef SMP
tsc_present = 0;
#endif
#if NAPM > 0
tsc_present = 0;
#endif
writertc(RTC_STATUSA, rtc_statusa);
writertc(RTC_STATUSB, RTCSB_24HR);

8
sys/amd64/isa/clock.c
View File

@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)clock.c 7.2 (Berkeley) 5/12/91
* $Id: clock.c,v 1.112 1998/02/21 20:45:27 jkh Exp $
* $Id: clock.c,v 1.113 1998/02/23 00:11:25 bde Exp $
*/
/*
@ -49,6 +49,7 @@
*/
#include "opt_clock.h"
#include "apm.h"
#include <sys/param.h>
#include <sys/systm.h>
@ -633,9 +634,9 @@ calibrate_clocks(void)
tsc_freq = rdtsc();
if (bootverbose) {
printf("i8254 clock: %u Hz\n", tot_count);
if (tsc_present)
printf("TSC clock: %u Hz, ", tsc_freq);
printf("i8254 clock: %u Hz\n", tot_count);
}
return (tot_count);
@ -683,6 +684,9 @@ startrtclock()
#ifdef SMP
tsc_present = 0;
#endif
#if NAPM > 0
tsc_present = 0;
#endif
writertc(RTC_STATUSA, rtc_statusa);
writertc(RTC_STATUSB, RTCSB_24HR);

8
sys/i386/i386/tsc.c
View File

@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)clock.c 7.2 (Berkeley) 5/12/91
* $Id: clock.c,v 1.112 1998/02/21 20:45:27 jkh Exp $
* $Id: clock.c,v 1.113 1998/02/23 00:11:25 bde Exp $
*/
/*
@ -49,6 +49,7 @@
*/
#include "opt_clock.h"
#include "apm.h"
#include <sys/param.h>
#include <sys/systm.h>
@ -633,9 +634,9 @@ calibrate_clocks(void)
tsc_freq = rdtsc();
if (bootverbose) {
printf("i8254 clock: %u Hz\n", tot_count);
if (tsc_present)
printf("TSC clock: %u Hz, ", tsc_freq);
printf("i8254 clock: %u Hz\n", tot_count);
}
return (tot_count);
@ -683,6 +684,9 @@ startrtclock()
#ifdef SMP
tsc_present = 0;
#endif
#if NAPM > 0
tsc_present = 0;
#endif
writertc(RTC_STATUSA, rtc_statusa);
writertc(RTC_STATUSB, RTCSB_24HR);

8
sys/i386/isa/clock.c
View File

@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)clock.c 7.2 (Berkeley) 5/12/91
* $Id: clock.c,v 1.112 1998/02/21 20:45:27 jkh Exp $
* $Id: clock.c,v 1.113 1998/02/23 00:11:25 bde Exp $
*/
/*
@ -49,6 +49,7 @@
*/
#include "opt_clock.h"
#include "apm.h"
#include <sys/param.h>
#include <sys/systm.h>
@ -633,9 +634,9 @@ calibrate_clocks(void)
tsc_freq = rdtsc();
if (bootverbose) {
printf("i8254 clock: %u Hz\n", tot_count);
if (tsc_present)
printf("TSC clock: %u Hz, ", tsc_freq);
printf("i8254 clock: %u Hz\n", tot_count);
}
return (tot_count);
@ -683,6 +684,9 @@ startrtclock()
#ifdef SMP
tsc_present = 0;
#endif
#if NAPM > 0
tsc_present = 0;
#endif
writertc(RTC_STATUSA, rtc_statusa);
writertc(RTC_STATUSB, RTCSB_24HR);

8
sys/isa/atrtc.c
View File

@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)clock.c 7.2 (Berkeley) 5/12/91
* $Id: clock.c,v 1.112 1998/02/21 20:45:27 jkh Exp $
* $Id: clock.c,v 1.113 1998/02/23 00:11:25 bde Exp $
*/
/*
@ -49,6 +49,7 @@
*/
#include "opt_clock.h"
#include "apm.h"
#include <sys/param.h>
#include <sys/systm.h>
@ -633,9 +634,9 @@ calibrate_clocks(void)
tsc_freq = rdtsc();
if (bootverbose) {
printf("i8254 clock: %u Hz\n", tot_count);
if (tsc_present)
printf("TSC clock: %u Hz, ", tsc_freq);
printf("i8254 clock: %u Hz\n", tot_count);
}
return (tot_count);
@ -683,6 +684,9 @@ startrtclock()
#ifdef SMP
tsc_present = 0;
#endif
#if NAPM > 0
tsc_present = 0;
#endif
writertc(RTC_STATUSA, rtc_statusa);
writertc(RTC_STATUSB, RTCSB_24HR);