Re: rt20 patch question

[Mark Hounschell]

Daniel Walker wrote:
> On Tue, 2006-05-09 at 08:23 -0400, Mark Hounschell wrote:
>> Can I assume configuring 'Complete preemption' is the same as
>> configuring ('Voluntary preemption' + 'Hardirq' + 'Softirq' + default
>> proc settings)?
> 
> Not Voluntary preemption, and I'm not sure what default proc settings is
> referring too .

The proc settings or boot options to enable or disable hardirq or
softirq threading that you have avaialable in Voluntary preemption.

> Complete preemption is like CONFIG_PREEMPT and softirq
> and hardirq threading .. The preemption isn't voluntary, it's forced .
> 

Complete preemption you have no choice of threading hard or soft irqs.
They are threaded.

So If I config Voluntary preemption + Hardirq and Softirq threading and
do not disable hardirq or softirq via proc or boot cmdline, is that the
same as configuring Complete preemption?

Mark

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