linux-kernel - Re: [-mm] Disable the memory controller by default

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Date:	Mon, 7 Apr 2008 14:03:40 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Balbir Singh <balbir@...ux.vnet.ibm.com>
Cc:	andi@...stfloor.org, Andrew Morton <akpm@...ux-foundation.org>,
	YAMAMOTO Takashi <yamamoto@...inux.co.jp>,
	Paul Menage <menage@...gle.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, Pavel Emelianov <xemul@...nvz.org>,
	hugh@...itas.com,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [-mm] Disable the memory controller by default

On Mon, Apr 07, 2008 at 05:21:37PM +0530, Balbir Singh wrote:
> 
> 
> Due to the overhead of the memory controller. The
> memory controller is now disabled by default. This patch changes
> cgroup_disable to cgroup_toggle, so that each controller can decide
> whether it wants to be enabled/disabled by default.
> 
> If everyone agrees on this approach and likes it, should we push this
> into 2.6.25?

First I like the change to make it disabled by default.

I don't think "toggle" is good semantics for a user visible switch
because that changes the meaning when the kernel default changes
(which it will likely once the current default overhead is fixed)

It should be rather: cgroup=on/off 

-Andi
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