Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752168Ab3F0FpV (ORCPT ); Thu, 27 Jun 2013 01:45:21 -0400 Received: from moutng.kundenserver.de ([212.227.126.171]:62456 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751582Ab3F0FpT (ORCPT ); Thu, 27 Jun 2013 01:45:19 -0400 Message-ID: <1372311907.5871.78.camel@marge.simpson.net> Subject: Re: cgroup: status-quo and userland efforts From: Mike Galbraith To: Tejun Heo Cc: Tim Hockin , Li Zefan , Containers , Cgroups , bsingharora , "dhaval.giani" , Kay Sievers , jpoimboe , "Daniel P. Berrange" , lpoetter , workman-devel , "linux-kernel@vger.kernel.org" Date: Thu, 27 Jun 2013 07:45:07 +0200 In-Reply-To: <20130626212047.GB4536@htj.dyndns.org> References: <20130406012159.GA17159@mtj.dyndns.org> <20130422214159.GG12543@htj.dyndns.org> <20130625000118.GT1918@mtj.dyndns.org> <20130626212047.GB4536@htj.dyndns.org> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 X-Provags-ID: V02:K0:UfdEJOGfuFfAPuy+bYXpBsdSA33JLpgp+JhZT0/FIii B02R4medEeTS+SAIYoLbIe9CHlQqUYWEV/kjpKA/c9HySgihpb NkMHc2yYV2OS8WCJZTLYiJ//wmOGtq5MQ6JP+ct7iNxAA8GzlI f2p7lTPyY4jHoMe+t7PrUPE0lC5G7jWkxdCZDwwqslSbxp0CSO V8e9J4EnwetVhWL0RUA16kFH5B2QIak875FLkvam0Zmm9cFX0I Z+QSM+D8OttMGZkNNnXdLZILjpgUh8xKxwuTr+7U3phhKmt3nV Lm+Isg0s2LhIRBqjKp49xKnXSRV8zyP0Lgd3jThulrdX/N1IKz FgyPa75iwSP7c3tXHnSKi0uCGwLSSWaQMjXton+uFz3LxHvDZp wEIQtreBS5Zzw== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1664 Lines: 35 On Wed, 2013-06-26 at 14:20 -0700, Tejun Heo wrote: > Hello, Tim. > > On Mon, Jun 24, 2013 at 09:07:47PM -0700, Tim Hockin wrote: > > I really want to understand why this is SO IMPORTANT that you have to > > break userspace compatibility? I mean, isn't Linux supposed to be the > > OS with the stable kernel interface? I've seen Linus rant time and > > time again about this - why is it OK now? > > What the hell are you talking about? Nobody is breaking userland > interface. A new version of interface is being phased in and the old > one will stay there for the foreseeable future. It will be phased out > eventually but that's gonna take a long time and it will have to be > something hardly noticeable. Of course new features will only be > available with the new interface and there will be efforts to nudge > people away from the old one but the existing interface will keep > working it does. I can understand some alarm. When I saw the below I started frothing at the face and howling at the moon, and I don't even use the things much. http://lists.freedesktop.org/archives/systemd-devel/2013-June/011521.html Hierarchy layout aside, that "private property" bit says that the folks who currently own and use the cgroups interface will lose direct access to it. I can imagine folks who have become dependent upon an on the fly management agents of their own design becoming a tad alarmed. -Mike -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/