linux-kernel - Re: [PATCH sched-devel] Generate uevents for user creation/destruction

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Date:	Wed, 10 Oct 2007 09:42:19 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>
Cc:	Heiko Carstens <heiko.carstens@...ibm.com>,
	Dhaval Giani <dhaval@...ux.vnet.ibm.com>,
	Mike Galbraith <efault@....de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Dmitry Adamushko <dmitry.adamushko@...il.com>,
	lkml <linux-kernel@...r.kernel.org>, maneesh@...ux.vnet.ibm.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	Sudhir Kumar <skumar@...ux.vnet.ibm.com>
Subject: Re: [PATCH sched-devel] Generate uevents for user
	creation/destruction


* Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com> wrote:

> > Shouldn't that be done via uevents? E.g. UID x gets added to the 
> > sysfs tree, generates a uevent and a script then figures out the 
> > cpu_share and sets it. That way you also don't need to keep the 
> > directories. No?
> 
> Heiko,
> 	Thanks for the hint. Here's a patch to enable generation of 
> uevents for user creation/deletion. These uevents can be handled in 
> userspace to configure a new user's cpu share.
> 
> Note : After bootup I could test that new user's cpu share is 
> configured as per a configuration file (/etc/user_cpu_share.conf). 
> However this mechanism didnt work for root user. Perhaps uevent for 
> root user is generated way too early?
> 
> A HOWTO text file is also attached explaining how to make use of these 
> uevents in userspace.
> 
> Ingo,
> 	This patch applies on top of latest sched-devel tree. Pls 
> review and apply ..

thanks, applied. This looks reassuringly simple and straightforward!

	Ingo
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