linux-kernel - Re: [PATCH 2/4] cgroup: define controller file conventions

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Message-ID: <20150803133601.GA18536@cmpxchg.org>
Date:	Mon, 3 Aug 2015 09:36:01 -0400
From:	Johannes Weiner <hannes@...xchg.org>
To:	Tejun Heo <tj@...nel.org>
Cc:	axboe@...nel.dk, lizefan@...wei.com, linux-kernel@...r.kernel.org,
	vgoyal@...hat.com, avanzini.arianna@...il.com,
	cgroups@...r.kernel.org, kernel-team@...com
Subject: Re: [PATCH 2/4] cgroup: define controller file conventions

On Sun, Aug 02, 2015 at 04:23:42PM -0400, Tejun Heo wrote:
> Traditionally, each cgroup controller implemented whatever interface
> it wanted leading to interfaces which are widely inconsistent.
> Examining the requirements of the controllers readily yield that there
> are only a few control schemes shared among all.
> 
> Two major controllers already had to implement new interface for the
> unified hierarchy due to significant structural changes.  Let's take
> the chance to establish common conventions throughout all controllers.
> 
> This patch defines CGROUP_WEIGHT_MIN/DFL/MAX to be used on all weight
> based control knobs and documents the conventions that controllers
> should follow on the unified hierarchy.  Except for io.weight knob,
> all existing unified hierarchy knobs are already compliant.  A
> follow-up patch will update io.weight.
> 
> Signed-off-by: Tejun Heo <tj@...nel.org>
> Cc: Li Zefan <lizefan@...wei.com>
> Cc: Johannes Weiner <hannes@...xchg.org>

Acked-by: Johannes Weiner <hannes@...xchg.org>
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