From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mike Galbraith <umgwanakikbuti-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: Re: [PATCHSET RFC cgroup/for-4.6] cgroup, sched: implement resource
 group and PRIO_RGRP
Date: Thu, 07 Apr 2016 10:05:48 +0200
Message-ID: <1460016348.4080.26.camel@gmail.com>
References: <1457710888-31182-1-git-send-email-tj@kernel.org>
	 <20160314113013.GM6344@twins.programming.kicks-ass.net>
	 <20160406155830.GI24661@htj.duckdns.org>
	 <20160407064549.GH3430@twins.programming.kicks-ass.net>
	 <20160407073547.GA12560@cmpxchg.org>
Mime-Version: 1.0
Content-Transfer-Encoding: 7bit
Return-path: <cgroups-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=20120113;
        h=message-id:subject:from:to:cc:date:in-reply-to:references
         :mime-version:content-transfer-encoding;
        bh=lBMUn+o7OME/D8nKcmSXLPjdElR34iCFXMU5IiYPdeo=;
        b=1FV2cBNeC9QwExhK3aL31BBsmhtyXldLozC7H0hobH8lKK1bqW36Dbmf6Y8F3U6tQl
         gRt+lsz9gYra+1/wyaiRPlFOQEZ+o2nNGa+4kjDWeqjKCChgqB7S/mzKYMGX3DDrDpaF
         dGu/FYcdqF09lHrUyKUgpFIYDchLy3uznbKQEjdC6K4y+n6YobOX50G6PvHWqBFMb9mP
         kiUpE2fLQhR61wBQP8GkL5edqDd2CJ1Om3A1JifG70xsnuc2BWbI/Z0Qn0jwGDnODPCX
         kaleDVxN7pzt8k5+6h5TsCwZ2e/muxYQS81NHm3eLEBCcAcKQ6mpsEUgiBlLb9R6fQRK
         /wmw==
In-Reply-To: <20160407073547.GA12560-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
Sender: cgroups-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
List-ID: <cgroups.vger.kernel.org>
Content-Type: text/plain; charset="us-ascii"
To: Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>, Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
Cc: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org, akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org, mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org, pjt-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, kernel-team-b10kYP2dOMg@public.gmane.org

On Thu, 2016-04-07 at 03:35 -0400, Johannes Weiner wrote:
> On Thu, Apr 07, 2016 at 08:45:49AM +0200, Peter Zijlstra wrote:
> > So I recently got made aware of the fact that cgroupv2 doesn't
> > allow
> > tasks to be associated with !leaf cgroups, this is yet another
> > capability of cpu-cgroup you've destroyed.
> 
> May I ask how you are using that?

One real world usage is the thread pool servicing customers on a cgroup
= account basis that I outlined.

	-Mike