Messages in this thread | | | Date | Thu, 10 Oct 2013 18:50:46 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH 0/6] Optimize the cpu hotplug locking -v2 |
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* Peter Zijlstra <peterz@infradead.org> 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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