Re: Why can't I set the priority of softirq-hrt? (Re: 2.6.17-rt1)

[Thomas Gleixner]

On Tue, 2006-06-20 at 19:12 +0100, Esben Nielsen wrote:
> >
> >>
> >> Another complicated design would be to make a task for each priority.
> >> Then the interrupt wakes the highest priority one, which handles the first
> >> callback and awakes the next one etc.
> >
> > Don't think that is necessary.
> 
> Me neither :-) Running sofhtirq-hrt at priority 99 - or whatever is 
> set by chrt - should be sufficient.

It is not, that was the reason, why we implemted it. You get arbitrary
latencies caused by timer storms.

I have to check, whether the priority is propagated when the softirq is
blocked on a lock. If not its a bug and has to be fixed.

	tglx


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