Re: [RFC][PATCH 0/4] Redesign cpu_hotplug locking.

[Andrew Morton]

On Sun, 27 Aug 2006 00:05:25 +0200
Ingo Molnar <mingo@xxxxxxx> wrote:

> 
> * Linus Torvalds <torvalds@xxxxxxxx> wrote:
> 
> > I personally doubt that it's the case that we'd want to accelerate 
> > inclusion - very few things actually do CPU hotplug, and right now the 
> > only way to even hit the sequences in normal use is literally just the 
> > "suspend under SMP" case that hasn't historically worked very well 
> > anyway, but was what made at least me personally aware of the problems 
> > ;^).
> 
> there's also bootup on SMP that is technically a series of hot-cpu-add 
> events. That already tests some aspects of it. Maybe we should turn 
> shutdown into the logical reverse: into a series of hot-cpu-remove 
> events?
> 

Would be logical, but we would want to avoid making CONFIG_HOTPLUG_CPU a
requirement for SMP. 
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