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SubjectRe: [ANNOUNCE] 3.6.6-rt17
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On Fri, 2012-12-21 at 15:23 +0100, Thomas Gleixner wrote: 
> On Fri, 21 Dec 2012, Mike Galbraith wrote:
> > On Mon, 2012-11-12 at 22:28 +0100, Thomas Gleixner wrote:
> > > Dear RT Folks,
> > >
> > > I'm pleased to announce the 3.6.6-rt17 release. 3.6.6-rt16 is just a
> > > not announced update release to 3.6.6.
> > >
> > > Changes since 3.6.6-rt16:
> > >
> > > * Finally make the NOHZ softirq pending detection work with the new
> > > softirq scheme.
> >
> > Well, almost. They gripe when rebooting, but I haven't seen one other
> > than that. This is 3.6.11-rt23 on a 64 core DL980 I set up to run some
> > latency tests on.
>
> Yeah. It's not fixed completely. I know what it needs but thats major
> surgery.
>
> > [ 318.692463] kvm: exiting hardware virtualization
> > [ 319.568482] Disabling non-boot CPUs ...
> > [ 319.647819] NOHZ: local_softirq_pending 80
> > [ 319.876148] NOHZ: local_softirq_pending 202
> > [ 319.876172] NOHZ: local_softirq_pending 202
> > [ 319.988912] NOHZ: local_softirq_pending 282
> > [ 320.097066] NOHZ: local_softirq_pending 202
> > [ 320.321428] NOHZ: local_softirq_pending 80
> > [ 320.662601] NOHZ: local_softirq_pending 202
> > [ 320.662637] NOHZ: local_softirq_pending 202
> > [ 323.162636] NOHZ: local_softirq_pending 202
> > [ 323.162649] NOHZ: local_softirq_pending 202
> > [ 325.217675] Restarting system.
> >
> > Don't suppose you know why LAZY_PREEMPT would make 3.0-rt explode if you
> > turn on wakeup_rt tracer do you?
>
> No.

Aw poo. Tracing goop is hard.

> > I backported that and your softirq changes to 3.0. New softirq handling
> > scheme work spiffy there, LAZY_PREEMPT works fine too.. until you turn
> > tracing on, then it corrupts memory, and makes mushroom cloud.
>
> I guess you are just trying to make up for the canceled apocalypse :)

Damn. I forgot to run around yelling "The sky is falling!" :)

-Mike




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