lkml.org 
[lkml]   [2007]   [Oct]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: nmi_watchdog fix for x86_64 to be more like i386
On Mon, Oct 01, 2007 at 12:56:26PM -0700, Arjan van de Ven wrote:
> On Mon, 1 Oct 2007 21:27:39 +0200 (CEST)
>
> > > I already did this here by checking for cpu != 0. But it also needs
> > > either tracking or forbidding migrations of irq 0. I can take care
> > > of the patch.
> >
> > I was thinking about the same fix. On i386 we already have the irq
> > migration / balancing of irq 0 disabled. That's why we setup IRQ0 with
> > IRQ_NOBALANCING.
>
> btw doing this is a problem if the user decides to hot(un)plug cpu 0...
> he then can't move the irqs away to do that

You can't hot unplug cpu0.
Take a look in sysfs, no /sys/devices/system/cpu/cpu0/online file.

Dave

--
http://www.codemonkey.org.uk
-
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/

\
 
 \ /
  Last update: 2007-10-01 22:13    [W:0.127 / U:0.048 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site