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Fixed double counting of runtime after a process exits. The last

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timeslice of the exiting process was counted for both the exiting
process and the next process to run if the next process runs
immediately.

Broken in:	mostly in kern_clock.c rev.1.70 (1998/05/28)
This commit is contained in:
Bruce Evans 1998-07-27 19:16:21 +00:00
parent d6c37912c6
commit bc9e7c3b42
1 changed files with 11 additions and 1 deletions
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12
sys/kern/kern_resource.c
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@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)kern_resource.c 8.5 (Berkeley) 1/21/94
* $Id: kern_resource.c,v 1.36 1998/05/17 11:52:43 phk Exp $
* $Id: kern_resource.c,v 1.37 1998/05/28 09:30:18 phk Exp $
*/
#include "opt_compat.h"
@ -524,6 +524,16 @@ calcru(p, up, sp, ip)
microuptime(&tv);
totusec += (tv.tv_usec - p->p_switchtime.tv_usec) +
(tv.tv_sec - p->p_switchtime.tv_sec) * (int64_t)1000000;
/*
* Copy the time that was just read to `switchtime' in case
* we are being called from exit1(). Exits don't go through
* mi_switch(), so `switchtime' doesn't get set in the normal
* way. We set it here instead of more cleanly in exit1()
* to avoid losing track of the time between the calls to
* microuptime().
*/
switchtime = tv;
}
if (totusec < 0) {
/* XXX no %qd in kernel. Truncate. */