From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755360Ab1KYCDa (ORCPT ); Thu, 24 Nov 2011 21:03:30 -0500 Received: from cn.fujitsu.com ([222.73.24.84]:53137 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1755308Ab1KYCD3 (ORCPT ); Thu, 24 Nov 2011 21:03:29 -0500 Message-ID: <4ECEF7DD.6010403@cn.fujitsu.com> Date: Fri, 25 Nov 2011 10:05:17 +0800 From: Li Zefan User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.9) Gecko/20100921 Fedora/3.1.4-1.fc14 Thunderbird/3.1.4 MIME-Version: 1.0 To: Paul Turner CC: Glauber Costa , linux-kernel@vger.kernel.org, paul@paulmenage.org, daniel.lezcano@free.fr, a.p.zijlstra@chello.nl, jbottomley@parallels.com, fweisbec@gmail.com, Balbir Singh Subject: Re: [PATCH v2 14/14] Change CPUACCT to default n References: <1320182360-20043-1-git-send-email-glommer@parallels.com> <1320182360-20043-15-git-send-email-glommer@parallels.com> <4EBD94A0.9070703@google.com> <4EBE4A80.6090607@parallels.com> In-Reply-To: X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.1FP4|July 25, 2010) at 2011-11-25 10:03:05, Serialize by Router on mailserver/fnst(Release 8.5.1FP4|July 25, 2010) at 2011-11-25 10:03:08, Serialize complete at 2011-11-25 10:03:08 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > despite it being a not entirely natural fit. Something I proposed at > Prague and that we could explore here is the idea of a co-mounted > controller. In this example it would only be mountable with cpu so > you could always depend on the cpu hierarchy being there; likewise we > can put (jump-labeled) touchpoints within the cpu-subsystem to call > out for updates as appropriate when the co-mount exists. > IIUC, this co-mounting idea is something I implemented years ago: https://lkml.org/lkml/2008/6/18/389 The use case and the reason it was rejected: https://lkml.org/lkml/2008/7/1/97 -- Li Zefan