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Improve clock accuracy by accounting for late/missed clock interrupts

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if the hardware supports it.
This commit is contained in:
wollman 1995-10-12 20:35:01 +00:00
parent 4afe99dda1
commit fab8249e23
3 changed files with 9 additions and 9 deletions
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6
sys/kern/kern_clock.c
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)kern_clock.c 8.5 (Berkeley) 1/21/94
* $Id: kern_clock.c,v 1.15 1995/08/28 09:18:43 julian Exp $
* $Id: kern_clock.c,v 1.16 1995/09/09 18:10:01 davidg Exp $
*/
/* Portions of this software are covered by the following: */
@ -477,9 +477,9 @@ hardclock(frame)
long ltemp;
if (timedelta == 0) {
time_update = tick;
time_update = CPU_THISTICKLEN(tick);
} else {
time_update = tick + tickdelta;
time_update = CPU_THISTICKLEN(tick) + tickdelta;
timedelta -= tickdelta;
}
BUMPTIME(&mono_time, time_update);

6
sys/kern/kern_tc.c
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)kern_clock.c 8.5 (Berkeley) 1/21/94
* $Id: kern_clock.c,v 1.15 1995/08/28 09:18:43 julian Exp $
* $Id: kern_clock.c,v 1.16 1995/09/09 18:10:01 davidg Exp $
*/
/* Portions of this software are covered by the following: */
@ -477,9 +477,9 @@ hardclock(frame)
long ltemp;
if (timedelta == 0) {
time_update = tick;
time_update = CPU_THISTICKLEN(tick);
} else {
time_update = tick + tickdelta;
time_update = CPU_THISTICKLEN(tick) + tickdelta;
timedelta -= tickdelta;
}
BUMPTIME(&mono_time, time_update);

6
sys/kern/kern_timeout.c
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)kern_clock.c 8.5 (Berkeley) 1/21/94
* $Id: kern_clock.c,v 1.15 1995/08/28 09:18:43 julian Exp $
* $Id: kern_clock.c,v 1.16 1995/09/09 18:10:01 davidg Exp $
*/
/* Portions of this software are covered by the following: */
@ -477,9 +477,9 @@ hardclock(frame)
long ltemp;
if (timedelta == 0) {
time_update = tick;
time_update = CPU_THISTICKLEN(tick);
} else {
time_update = tick + tickdelta;
time_update = CPU_THISTICKLEN(tick) + tickdelta;
timedelta -= tickdelta;
}
BUMPTIME(&mono_time, time_update);