Messages in this thread | | | Date | Tue, 24 Apr 2007 11:32:22 -0700 | From | Andrew Morton <> | Subject | Re: [patch 1/4] Ignore stolen time in the softlockup watchdog |
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On Tue, 24 Apr 2007 11:16:09 -0700 Jeremy Fitzhardinge <jeremy@goop.org> wrote:
> Andrew Morton wrote: > > I said that because the damn thing went away when I was hunting it down > > because I lost the config and was unable to remember the right combination > > of debug settings. Fortunately it later came back so I took care to > > preserve the config. > > > > sched_clock doesn't *do* anything except flap interrupts.
Well, it _is_ mysterious.
Did you try to locate the code which failed? I got lost in macros and include files, and gave up very very easily. Stop hiding, Ingo.
> Oh, wait, have > you got Andi's bugfixed version of the sched_clock patch? The first > version did a local_save_flags rather than a local_irq_save.
I have whatever I pulled from firstfloor over the weekend. It's in rc7-mm1. No, it doesn't use local_save_flags.
> >> Hm, is it caused by using sched_clock() to generate the printk > >> timestamps while generating the lock test output? > >> > > > > Conceivably. What does that locking API test do? > > > > Didn't make a difference here. Building your config now. > > > I was using printk timestamps and netconsole at the time. > > > > Ah, great, now you're going to make me setup netconsole... >
That's a doddle.
On test system, boot with
netconsole=4444@<test-system-ip-addr>/eth0,<udp-port-no>@<workstation-ip-addr>/<workstation-mac-addr>
On workstation:
sudo netcat -u -l -p <udp-port-no> | tee -a ~/.log/log-<test-system-hostname> - 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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