Re: RCU question

[Zwane Mwaikambo]

On Fri, 10 Dec 2004, George Anzinger wrote:

> > Well, softirqs should really be preemptible if you care about RT task
> > latency.  Ingo's patches have had this for months.  Works great.  Maybe
> > it's time to push it upstream.
> 
> Yes, I understand, and soft_irq() does turn on interrupts...
> I was thinking of something like:
> 
> 	while(softirq_pending()) {
> 		local_irq_enable();
> 		do_softirq();
> 		local_irq_disable();
> 	}
> 		<proceed to idle hlt...>

But that's a deadlock and if you enable interrupts you race.
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