Re: [PATCH 0/6] Optimize the cpu hotplug locking -v2

[Ingo Molnar]

* Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> On Thu, Oct 10, 2013 at 04:57:38PM +0200, Ingo Molnar wrote:
>
> > So ... why not make it _really_ cheap, i.e. the read lock costing 
> > nothing, and tie CPU hotplug to freezing all tasks in the system?
> 
> Such that we freeze regular tasks in userspace and kernel tasks in their 
> special freezer callback so as to guarantee minimal state?

Yes, absolutely.

Thanks,

	Ingo
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