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Date: Thu, 3 Nov 2011 15:06:11 -0200
From: Glauber Costa <glommer@parallels.com>
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To: Paul Menage <paul@paulmenage.org>
CC: Frederic Weisbecker <fweisbec@gmail.com>,
        Glauber Costa <glommer@gmail.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Tim Hockin <thockin@hockin.org>, LKML <linux-kernel@vger.kernel.org>,
        Li Zefan <lizf@cn.fujitsu.com>, Johannes Weiner <hannes@cmpxchg.org>,
        Aditya Kali <adityakali@google.com>, Oleg Nesterov <oleg@redhat.com>,
        Kay Sievers <kay.sievers@vrfy.org>, Tejun Heo <tj@kernel.org>,
        "Kirill A. Shutemov" <kirill@shutemov.name>,
        Containers <containers@lists.linux-foundation.org>,
        Paul Turner <pjt@google.com>
Subject: Re: [PATCH 00/10] cgroups: Task counter subsystem v6
References: <1317668832-10784-1-git-send-email-fweisbec@gmail.com> <20111004150111.e9337268.akpm00@gmail.com> <CAAAKZwu67VMiZgdpp=i5p7zyGbOHGHXwF_iprufGPzTLkkUF2A@mail.gmail.com> <20111028163021.1ce61f8a.akpm@linux-foundation.org> <CAA6-i6o0SPfZJDx4SRR1hY-He0L6zHuv0saH6EaE7Mrc2HF6PA@mail.gmail.com> <20111103164917.GF8198@somewhere.redhat.com> <4EB2C852.6020706@parallels.com> <CALdu-PDY8zpXYM3V9KRk4f2NyGevfNnuaWVdoT-qzSHOK--K3A@mail.gmail.com>
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On 11/03/2011 03:02 PM, Paul Menage wrote:
> On Thu, Nov 3, 2011 at 9:58 AM, Glauber Costa<glommer@parallels.com>  wrote:
>>
>> Because you are controlling tasks, and tasks are the main building block of
>> all cgroups, I think you should at least consider either using
>> a cgroup property,
>
> I don't see how making it a core cgroup property would remove the need
> to walk the hierarchy.
>
Sorry if I wasn't clear: It removes the need to walk multiple 
independent hierarchies. The walk is done only once.