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Date: Wed, 9 Mar 2016 20:21:17 +0100
From: Peter Zijlstra <peterz@infradead.org>
To: Andrew Hunter <ahh@google.com>
Cc: pavankumar kondeti <pavankumar.kondeti@gmail.com>,
        Pavan Kondeti <pkondeti@codeaurora.org>,
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        Ben Segall <bsegall@google.com>,
        Matt Fleming <matt@codeblueprint.co.uk>,
        Morten Rasmussen <morten.rasmussen@arm.com>, byungchul.park@lge.com
Subject: Re: Migrated CFS task getting an unfair advantage
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On Wed, Mar 09, 2016 at 11:00:42AM -0800, Andrew Hunter wrote:
> At Google, we essentially reverted 88ec22d and the subsequent tweaks
> to it, keeping vruntime absolute always , instead using
> task_move_group_fair to change the basis of relative min_vruntime
> between cpus.  We found this made it a lot easier to reason about and
> work with corss-cpu computations.  I could post the patch if it would
> be of interest...

Yes please, Paul said he would many times.