linux-kernel - Re: [RESEND PATCH 2/2] cpuacct: split usage into user_usage and sys

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Message-ID: <20160302161244.GC29826@mtj.duckdns.org>
Date:	Wed, 2 Mar 2016 11:12:44 -0500
From:	'Tejun Heo' <tj@...nel.org>
To:	Zhao Lei <zhaolei@...fujitsu.com>
Cc:	cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
	mingo@...hat.com, peterz@...radead.org
Subject: Re: [RESEND PATCH 2/2] cpuacct: split usage into user_usage and
 sys_usage.

Hello,

On Tue, Mar 01, 2016 at 06:35:56PM +0800, Zhao Lei wrote:
> Hi, Tejun Heo
> 
> > From: linux-kernel-owner@...r.kernel.org
> > [mailto:linux-kernel-owner@...r.kernel.org] On Behalf Of Tejun Heo
> > Sent: Tuesday, December 22, 2015 5:33 AM
> > To: Dongsheng Yang <yangds.fnst@...fujitsu.com>
> > Cc: cgroups@...r.kernel.org; linux-kernel@...r.kernel.org;
> > mingo@...hat.com; peterz@...radead.org
> > Subject: Re: [RESEND PATCH 2/2] cpuacct: split usage into user_usage and
> > sys_usage.
> > 
> > On Mon, Dec 21, 2015 at 07:14:43PM +0800, Dongsheng Yang wrote:
> > > Sometimes, cpuacct.usage is not detialed enough to user
> > > to see how much usage a group used. We want to know how
> > > much time it used in user mode and how much in kernel mode.
> > 
> Yang gave this patch to me :)
> I'm plan to continue this function.
> 
> > cpuusage is being phased out.  If you need these stats, please
> > implement it on cpu side.
>
> Currently, old stats are put in cpuacct, if we put new stats into cpu side,
> we have following way:

Yeah, on the second thought, at least for now, I think it's best to
put this in cpuacct.  We can do the trafer to the cpu controller
later.  Please feel free to add

 Acked-by: Tejun Heo <tj@...nel.org>

Thanks.

-- 
tejun