Messages in this thread | | | Date | Tue, 6 Jun 2006 19:42:32 -0400 | From | Don Zickus <> | Subject | Re: [2.6.17-rc5-mm2] crash when doing second suspend: BUG in arch/i386/kernel/nmi.c:174 |
| |
On Tue, Jun 06, 2006 at 04:27:55PM -0700, Jeremy Fitzhardinge wrote: > Andrew Morton wrote: > >All the above applies to suspend-to-disk. I don't know if suspend-to-RAM > >shuts down the APs. > > > > I'm using suspend-to-mem and it looks like its unplugging/replugging all > the CPUs. > > The part of the question I don't quite understand is why this is > considered per-CPU state? Surely NMI-watchdog is a system-wide thing? > Or does this also tie into other uses of the performance registers which > may be set per-CPU? > > J
The nmi watchdog is enable/disabled on a per-cpu basis. The fact that a single switch turns all of them on/off is just convienance. Adding in code to turn them on/off on a per-cpu basis just requires a simple user interface. It has been talked about before to deal with NUMA systems.
Cheers, Don
- 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/
| |