Re: [PATCH -tip] Switch arm defconfig files fromCONFIG_CLASSIC_RCU to CONFIG_TREE_RCU.

[Paul E. McKenney]

On Thu, Dec 25, 2008 at 10:33:01AM +0100, Sam Ravnborg wrote:
> On Thu, Dec 25, 2008 at 09:36:11AM +0100, Ingo Molnar wrote:
> > 
> > below is the fix for another small buglet that hits architectures that do 
> > not include kernel/Kconfig.preempt.
> 
> What is needed to let all architectures include Kconfig.preempt?
> We should not advertise preemption if not supported,
> but we could do this by a simple Kconfig symbol:
> 
> config HAVE_PREEMPT
> 	bool
> 
> And let all architectures that supports preemption do:
> 
> config "ARCH"
> 	select HAVE_PREEMPT
> 
> But maybe there is a simpler solution

The idea being to make things like PREEMPT then depend on HAVE_PREEMPT?

Seems reasonable to me, but I cannot claim to understand the
relationship of Kconfig and the various arches very well.

							Thanx, Paul
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