Date: Sat, 30 Aug 1997 13:32:07 -0600 From: Steve Passe <smp@csn.net> To: Poul-Henning Kamp <phk@critter.freebsd.dk> Cc: smp@freebsd.org Subject: Re: HEADS UP: another set of changes. Message-ID: <199708301932.NAA16780@Ilsa.StevesCafe.com> In-Reply-To: Your message of "Sat, 30 Aug 1997 21:25:34 %2B0200." <7370.872969134@critter.freebsd.dk>
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Hi,
> >One idea I had was to use the local timer as a watchdog. set it for 10 second
> >s
> >going into a simplelock. if your not out by then if fires a high priority
> >interrupt that causes a panic. the SMP disable_intr() would have to be
> >reworked a little, and there are probably other areas like ISRs that would
> >ignore it, but it should help some of the time.
>
> Well, I was thinking more about making it a counting semaphore in that
> case and printf a warning if the count was unexpected.
>
> I know for almost for sure that it will trigger in the vfs/vnode stuff
^^^^
> because of nested calls.
could you elaborate? Do you mean you expect my current disable_intr()
stuff to recursively lock? I have run it for about 13 hours now, including
a complete buildworld without problem.
--
Steve Passe | powered by
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