From: Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
To: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org,
lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
avanzini.arianna-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
kernel-team-b10kYP2dOMg@public.gmane.org
Subject: Re: [PATCH 2/4] cgroup: define controller file conventions
Date: Mon, 3 Aug 2015 09:36:01 -0400 [thread overview]
Message-ID: <20150803133601.GA18536@cmpxchg.org> (raw)
In-Reply-To: <1438547024-23497-3-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
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-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> Cc: Li Zefan <lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
> Cc: Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
Acked-by: Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
WARNING: multiple messages have this Message-ID (diff)
From: Johannes Weiner <hannes@cmpxchg.org>
To: Tejun Heo <tj@kernel.org>
Cc: axboe@kernel.dk, lizefan@huawei.com,
linux-kernel@vger.kernel.org, vgoyal@redhat.com,
avanzini.arianna@gmail.com, cgroups@vger.kernel.org,
kernel-team@fb.com
Subject: Re: [PATCH 2/4] cgroup: define controller file conventions
Date: Mon, 3 Aug 2015 09:36:01 -0400 [thread overview]
Message-ID: <20150803133601.GA18536@cmpxchg.org> (raw)
In-Reply-To: <1438547024-23497-3-git-send-email-tj@kernel.org>
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@kernel.org>
> Cc: Li Zefan <lizefan@huawei.com>
> Cc: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
next prev parent reply other threads:[~2015-08-03 13:36 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-02 20:23 [PATCHSET cgroup,block/for-4.3] cgroup, blkcg: establish controller interface conventions Tejun Heo
2015-08-02 20:23 ` Tejun Heo
2015-08-02 20:23 ` [PATCH 1/4] cgroup: export cgrp_dfl_root Tejun Heo
[not found] ` <1438547024-23497-2-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2015-08-05 8:18 ` Zefan Li
2015-08-05 8:18 ` Zefan Li
2015-08-05 20:23 ` Tejun Heo
2015-08-05 20:23 ` Tejun Heo
2015-08-02 20:23 ` [PATCH 2/4] cgroup: define controller file conventions Tejun Heo
[not found] ` <1438547024-23497-3-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2015-08-03 13:36 ` Johannes Weiner [this message]
2015-08-03 13:36 ` Johannes Weiner
2015-08-05 8:19 ` Zefan Li
2015-08-05 8:19 ` Zefan Li
2015-08-02 20:23 ` [PATCH 3/4] blkcg: s/CFQ_WEIGHT_*/CFQ_WEIGHT_LEGACY_*/ Tejun Heo
[not found] ` <1438547024-23497-1-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2015-08-02 20:23 ` [PATCH 4/4] blkcg: use CGROUP_WEIGHT_* scale for io.weight on the unified hierarchy Tejun Heo
2015-08-02 20:23 ` Tejun Heo
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