linux-kernel - Re: [PATCH 03/16] sched: aggregate load contributed by task entities on parenting cfs

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Date:	Wed, 04 Jul 2012 17:28:46 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Paul Turner <pjt@...gle.com>
Cc:	linux-kernel@...r.kernel.org, Venki Pallipadi <venki@...gle.com>,
	Srivatsa Vaddagiri <vatsa@...ibm.com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Nikunj A Dadhania <nikunj@...ux.vnet.ibm.com>,
	Mike Galbraith <efault@....de>,
	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
	Ben Segall <bsegall@...gle.com>, Ingo Molnar <mingo@...e.hu>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Morten Rasmussen <Morten.Rasmussen@....com>,
	Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>
Subject: Re: [PATCH 03/16] sched: aggregate load contributed by task
 entities on parenting cfs_rq

On Wed, 2012-06-27 at 19:24 -0700, Paul Turner wrote:
> For a given task t, we can compute its contribution to load as:
>   task_load(t) = runnable_avg(t) * weight(t)
> 
> On a parenting cfs_rq we can then aggregate
>   runnable_load(cfs_rq) = \Sum task_load(t), for all runnable children t
> 
> Maintain this bottom up, with task entities adding their contributed load to
> the parenting cfs_rq sum.  When a task entities load changes we add the same
> delta to the maintained sum.
> 
> Signed-off-by: Paul Turner <pjt@...gle.com>
> Signed-off-by: Ben Segall <bsegall@...gle.com> 

A lot of patches have this funny sob trail.. Ben never send me these
patches, so uhm. ?

Should that be Reviewed-by, or what is the deal with those?

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