From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932336Ab2CBLQV (ORCPT ); Fri, 2 Mar 2012 06:16:21 -0500 Received: from mx1.redhat.com ([209.132.183.28]:18346 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932143Ab2CBLQT (ORCPT ); Fri, 2 Mar 2012 06:16:19 -0500 Message-ID: <4F50ABF2.5070809@redhat.com> Date: Fri, 02 Mar 2012 12:16:02 +0100 From: Michal Schmidt User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.1) Gecko/20120216 Thunderbird/10.0.1 MIME-Version: 1.0 To: Mike Galbraith CC: Peter Zijlstra , Vivek Goyal , Tejun Heo , Li Zefan , containers@lists.linux-foundation.org, cgroups@vger.kernel.org, Andrew Morton , Kay Sievers , Lennart Poettering , Frederic Weisbecker , linux-kernel@vger.kernel.org, Christoph Hellwig Subject: Re: [RFD] cgroup: about multiple hierarchies References: <20120221211938.GE12236@google.com> <20120222163858.GB4128@redhat.com> <20120222165714.GC4128@redhat.com> <1329990094.24994.64.camel@twins> <1330006399.11248.20.camel@twins> <4F4FAF89.3090706@redhat.com> <1330633603.7414.49.camel@marge.simpson.net> In-Reply-To: <1330633603.7414.49.camel@marge.simpson.net> Content-Type: text/plain; charset=ISO-8859-2; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/01/2012 09:26 PM, Mike Galbraith wrote: > Q: you say systemd requires CONFIG_CGROUPS=y. Why is that? It's taking > over sysvinits job afaiui, what does that have to do with cgroups? It does more than sysvinit. It does more than fork off services and then forget about them. It keeps track of them all the time. It notices when all processes of a service have exited. It can kill all processes descended from a service. It can always tell what service a given process belongs to. Michal