Messages in this thread | | | Date | Mon, 12 Nov 2001 18:10:52 +0100 | From | Thorsten Kukuk <> | Subject | Re: [PATCH] fix loop with disabled tasklets |
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On Mon, Nov 12, Andrea Arcangeli wrote:
> On Mon, Nov 12, 2001 at 03:04:52PM +0100, Andrea Arcangeli wrote: > > On Mon, Nov 12, 2001 at 12:03:05AM -0800, David S. Miller wrote: > > > From: Andrea Arcangeli <andrea@suse.de> > > > Date: Mon, 12 Nov 2001 02:11:42 +0100 > > > > > > I'm just guessing: the scheduler isn't yet functional when > > > spawn_ksoftirqd is called. > > > > > > The scheduler is fully functional, this isn't what is going wrong. > > > > check ret_from_fork path, sparc32 scheduler is broken and this is why it > > deadlocks at boot, it has nothing to do with the softirq code, softirq > > code is innocent and it only get bitten by the sparc32 bug. > > real fix looks like this (no idea what PSR_PIL means so not sure if this > really works on UP but certainly the sched_yield breakage is fixed now > and it won't deadlock in the softirq code any longer):
A kernel with Andrea patch boots (after renaming all remaining ret_from_smpfork to ret_from_fork) on one critical machine from me. I will test the other this evening.
Thorsten
-- Thorsten Kukuk http://www.suse.de/~kukuk/ kukuk@suse.de SuSE GmbH Deutschherrenstr. 15-19 D-90429 Nuernberg -------------------------------------------------------------------- Key fingerprint = A368 676B 5E1B 3E46 CFCE 2D97 F8FD 4E23 56C6 FB4B - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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