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SubjectRe: [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U6

* Thomas Gleixner <> wrote:

> > Sorry that I can't show any trace dumps; only a hard-screenshot (with
> > digital camera?) would be possible but rather incomplete. The serial
> > console hack is not an option--these "modern" laptops doesn't come with
> > serial ports anymore, and netconsole is a no-op at a so early point of the
> > boot process. Or so I believe.
> >
> > OK. After some incremental configurations, I've isolated that those
> > oops(es) only occurs if PREEMPT_TIMING and/or LATENCY_TRACE areset (Y). My
> > first suspect was that newest RWSEM_DEADLOCK_DETECT, but it wasn't the
> > case.
> Same here on al DELL P4/UP.

any chance for serial logging on that box?

and does this bootup crash go away if you unset PREEMPT_TIMING or
LATENCY_TRACE, as suggested by Rui?

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