Re: Fw: Re: oops in choose_configuration()

[Mike Galbraith]

On Mon, 2006-03-06 at 08:47 +0100, Mike Galbraith wrote:
> On Sun, 2006-03-05 at 21:00 -0800, Linus Torvalds wrote:
> 
> > 
> > Is there something else I've missed?
> 
> Maybe.  Does this add anything to the picture?  During boot,
> recalc_task_prio() is called with now < p->timestamp.  This causes quite
> a stir.  If you WARN_ON(now < p->timestamp) or printk, you'll have a
> dead box due to hundreds of gripes as things churn.  Adding...
> 
> if (unlikely(now < p->timestamp))
> 	__sleep_time = 0ULL;
> 
> ...turns it into exactly one gripe.

Nope.  Further research shows that this is just a speed-step problem.
Still, the scheduler needs to protect itself, because even with all of
the speed-step stuff enabled, these continue to occurr even after
boot-up if you switch to a low power setting, which screws up the
scheduler.

	-Mike

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