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From: Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
To: Ben Blum <bblum-OM76b2Iv3yLQjUSlxSEPGw@public.gmane.org>
Cc: menage-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org,
	containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH v4 0/4] cgroups: support for module-loadable subsystems
Date: Wed, 6 Jan 2010 16:04:14 -0800	[thread overview]
Message-ID: <20100106160414.bd555474.akpm@linux-foundation.org> (raw)
In-Reply-To: <20091231051050.GA714-OM76b2Iv3yLQjUSlxSEPGw@public.gmane.org>

On Thu, 31 Dec 2009 00:10:50 -0500
Ben Blum <bblum-OM76b2Iv3yLQjUSlxSEPGw@public.gmane.org> wrote:

> This patch series implements support for building, loading, and
> unloading subsystems as modules, both within and outside the kernel
> source tree. It provides an interface cgroup_load_subsys() and
> cgroup_unload_subsys() which modular subsystems can use to register and
> depart during runtime. The net_cls classifier subsystem serves as the
> example for a subsystem which can be converted into a module using these
> changes.

What is the value in this?  What are the usage scenarios?  Why does the
benefit of this change exceed the cost/risk/etc of merging it?

  parent reply	other threads:[~2010-01-07  0:04 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20091231051050.GA714@andrew.cmu.edu>
     [not found] ` <20091231051050.GA714-OM76b2Iv3yLQjUSlxSEPGw@public.gmane.org>
2009-12-31  5:12   ` [PATCH v4 1/4] cgroups: revamp subsys array Ben Blum
2009-12-31  5:13   ` [PATCH v4 2/4] cgroups: subsystem module loading interface Ben Blum
2009-12-31  5:14   ` [PATCH v4 3/4] cgroups: subsystem module unloading Ben Blum
2009-12-31  5:15   ` [PATCH v4 4/4] cgroups: net_cls as module Ben Blum
2010-01-07  0:04   ` Andrew Morton [this message]
     [not found]     ` <20100106160414.bd555474.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2010-01-07  1:26       ` [PATCH v4 0/4] cgroups: support for module-loadable subsystems Ben Blum
     [not found]     ` <20100107012606.GA25577@andrew.cmu.edu>
     [not found]       ` <20100107012606.GA25577-OM76b2Iv3yLQjUSlxSEPGw@public.gmane.org>
2010-01-07  3:07         ` KAMEZAWA Hiroyuki
     [not found]       ` <20100107120732.97d502bd.kamezawa.hiroyu@jp.fujitsu.com>
     [not found]         ` <20100107120732.97d502bd.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2010-01-07  6:42           ` Li Zefan
     [not found]         ` <4B45824B.9030108@cn.fujitsu.com>
     [not found]           ` <20100107161627.34b31e0c.kamezawa.hiroyu@jp.fujitsu.com>
     [not found]             ` <20100107161627.34b31e0c.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2010-01-07  7:48               ` Ben Blum
     [not found]             ` <20100107074812.GA16656@andrew.cmu.edu>
     [not found]               ` <20100107074812.GA16656-OM76b2Iv3yLQjUSlxSEPGw@public.gmane.org>
2010-01-07  7:51                 ` KAMEZAWA Hiroyuki
     [not found]                   ` <20100107165117.dca1dc52.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2010-01-07  8:04                     ` Ben Blum
     [not found]           ` <4B45824B.9030108-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org>
2010-01-07  7:16             ` KAMEZAWA Hiroyuki
2010-01-07  8:14             ` Ben Blum
     [not found]               ` <20100107081432.GC16656-OM76b2Iv3yLQjUSlxSEPGw@public.gmane.org>
2010-01-07  8:22                 ` Ben Blum
2010-01-08  5:27             ` Ben Blum
     [not found]           ` <20100108052734.GA13168@andrew.cmu.edu>
     [not found]             ` <20100108052734.GA13168-OM76b2Iv3yLQjUSlxSEPGw@public.gmane.org>
2010-01-08  5:29               ` [RFC] [PATCH 1/2] cgroups: modular subsystems support for use_id Ben Blum
2010-01-08  5:30               ` [RFC] [PATCH 2/2] cgroups: blkio subsystem as module Ben Blum
     [not found]             ` <20100108053021.GC13168@andrew.cmu.edu>
     [not found]               ` <20100108053021.GC13168-OM76b2Iv3yLQjUSlxSEPGw@public.gmane.org>
2010-01-08 15:10                 ` Vivek Goyal
     [not found]                   ` <20100108151038.GA22219-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-01-12  0:21                     ` KAMEZAWA Hiroyuki
     [not found]                   ` <20100112092106.9ac4e535.kamezawa.hiroyu@jp.fujitsu.com>
     [not found]                     ` <20100112092106.9ac4e535.kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2010-01-14  9:32                       ` Balbir Singh
     [not found]                     ` <661de9471001140132o23f44a4fjb1849d865f96d19a@mail.gmail.com>
     [not found]                       ` <661de9471001140132o23f44a4fjb1849d865f96d19a-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-14 11:42                         ` Vivek Goyal
2010-01-08 16:33                 ` Vivek Goyal
     [not found]                   ` <20100108163352.GB22219-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-01-12 23:34                     ` Ben Blum
     [not found]                       ` <20100112233453.GB5098-/0J7IIbLF8FCM1neWV3AGuCmf2DRS9x2@public.gmane.org>
2010-01-12 23:36                         ` [PATCH v2 1/2] cgroups: modular subsystems support for use_id Ben Blum
2010-01-12 23:37                         ` [PATCH v2 2/2] cgroups: blkio subsystem as module Ben Blum
     [not found]                           ` <20100112233709.GD5098-/0J7IIbLF8FCM1neWV3AGuCmf2DRS9x2@public.gmane.org>
2010-01-14  9:15                             ` Jens Axboe
     [not found]                           ` <20100114091557.GO13771@kernel.dk>
     [not found]                             ` <20100114091557.GO13771-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
2010-01-14  9:29                               ` Li Zefan
2009-12-31  5:10 [PATCH v4 0/4] cgroups: support for module-loadable subsystems Ben Blum

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