Messages in this thread | | | Date | Tue, 14 Mar 2006 15:18:12 -0800 | From | "Randy.Dunlap" <> | Subject | Re: soft lockup in serial8250_console_write(?) |
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On Tue, 14 Mar 2006 22:40:49 +0100 Ingo Molnar wrote:
> > * Randy.Dunlap <rdunlap@xenotime.net> wrote: > > > Hi, > > > > (x86_64; 2.6.16-rc6; serial console configured but nothing connected > > to the serial port) > > > > I'm seeing an occasional soft lockup, maybe in > > serial8250_console_write(). (drivers/serial/8250.c) > > > > This function calls wait_for_xmitr() [inline], which in worst case can > > spin for 1.010 seconds. Could this be the cause of a soft lockup? > > hm, it shouldnt cause that. Could you try the attached patch [which is > the next-gen softlockup detector], do you get the message even with that > one applied?
5/5 good boots with your new patch. 5/5 soft lockups without it.
Is this scheduled for post-2.6.16 ?
Thanks, --- ~Randy - 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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