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Don't forget to update `switchticks' in corner cases (except for

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the alpha fork_trampoline(), forget it because it I believe it is
only necessary for the unsupported SMP case).
This commit is contained in:
Bruce Evans 1999-02-25 11:03:08 +00:00
parent 5c3d6cdb69
commit 1b0b259ed2
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=44256
5 changed files with 19 additions and 13 deletions
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6
sys/amd64/amd64/exception.S
View File

@ -30,7 +30,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: exception.s,v 1.54 1998/07/28 17:55:37 bde Exp $
* $Id: exception.s,v 1.55 1998/08/10 19:41:07 bde Exp $
*/
#include "npx.h"
@ -317,10 +317,12 @@ ENTRY(fork_trampoline)
movl _switchtime,%ecx
testl %ecx,%ecx
jne 1f
/* XXX unreachable? */
/* XXX unreachable except in the SMP case? */
pushl %eax
call _microuptime
popl %eax
movl _ticks,%eax
movl %eax,_switchticks
jmp 2f
1:
movl %ecx,(%eax)

6
sys/amd64/amd64/exception.s
View File

@ -30,7 +30,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: exception.s,v 1.54 1998/07/28 17:55:37 bde Exp $
* $Id: exception.s,v 1.55 1998/08/10 19:41:07 bde Exp $
*/
#include "npx.h"
@ -317,10 +317,12 @@ ENTRY(fork_trampoline)
movl _switchtime,%ecx
testl %ecx,%ecx
jne 1f
/* XXX unreachable? */
/* XXX unreachable except in the SMP case? */
pushl %eax
call _microuptime
popl %eax
movl _ticks,%eax
movl %eax,_switchticks
jmp 2f
1:
movl %ecx,(%eax)

6
sys/i386/i386/exception.s
View File

@ -30,7 +30,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: exception.s,v 1.54 1998/07/28 17:55:37 bde Exp $
* $Id: exception.s,v 1.55 1998/08/10 19:41:07 bde Exp $
*/
#include "npx.h"
@ -317,10 +317,12 @@ ENTRY(fork_trampoline)
movl _switchtime,%ecx
testl %ecx,%ecx
jne 1f
/* XXX unreachable? */
/* XXX unreachable except in the SMP case? */
pushl %eax
call _microuptime
popl %eax
movl _ticks,%eax
movl %eax,_switchticks
jmp 2f
1:
movl %ecx,(%eax)

9
sys/kern/init_main.c
View File

@ -39,7 +39,7 @@
* SUCH DAMAGE.
*
* @(#)init_main.c 8.9 (Berkeley) 1/21/94
* $Id: init_main.c,v 1.108 1999/02/17 21:03:14 luoqi Exp $
* $Id: init_main.c,v 1.109 1999/02/19 14:25:34 luoqi Exp $
*/
#include "opt_devfs.h"
@ -490,14 +490,13 @@ proc0_post(dummy)
struct timespec ts;
/*
* Now can look at time, having had a chance to verify the time
* from the file system. Reset p->p_runtime as it may have been
* munched in mi_switch() after the time got set. Set
* p->p_switchtime to be consistent with this unmunching.
* Now we can look at the time, having had a chance to verify the
* time from the file system. Pretend that proc0 started now.
*/
microtime(&proc0.p_stats->p_start);
proc0.p_runtime = 0;
microuptime(&proc0.p_switchtime);
switchticks = ticks;
/*
* Give the ``random'' number generator a thump.

5
sys/kern/kern_resource.c
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)kern_resource.c 8.5 (Berkeley) 1/21/94
* $Id: kern_resource.c,v 1.39 1999/01/30 06:25:00 newton Exp $
* $Id: kern_resource.c,v 1.40 1999/01/31 03:15:13 newton Exp $
*/
#include "opt_compat.h"
@ -532,9 +532,10 @@ calcru(p, up, sp, ip)
* 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().
* microuptime(). Similarly for `switchticks'.
*/
switchtime = tv;
switchticks = ticks;
}
if (totusec < 0) {
/* XXX no %qd in kernel. Truncate. */