Easy now, there is more depth to it than that... I have promised myself
to get the timecounter paper written and I'll probably present it at
BSDcon-euro-2002 in Amsterdam if they want to listen to me.
For now, lets concentrate on the PIIX hardware because that's where
the problem seems to be...
In message <[EMAIL PROTECTED]>, Matthew Dillon wri
> Ok, I've looked at the code more carefully and I understand how this
> works now. However, it is not enough in an SMP environment. You
> need a generation count in the timecounter structure and you also need
> a synchronization point when you switch time counters or a process
> running on a different cpu may wind up using a time counter that is being
> actively updated.
> I'm experimenting with your patch now. I'll send email when I have
> some test results.
>:I just wrote the following fix for some of the overflow problems.
>:RCS file: /home/ncvs/src/sys/kern/kern_tc.c,v
>:retrieving revision 1.113
>:diff -c -2 -r1.113 kern_tc.c
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Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
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