From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755543AbbHYJYv (ORCPT ); Tue, 25 Aug 2015 05:24:51 -0400 Received: from mail-wi0-f176.google.com ([209.85.212.176]:37787 "EHLO mail-wi0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753279AbbHYJYq (ORCPT ); Tue, 25 Aug 2015 05:24:46 -0400 Date: Tue, 25 Aug 2015 11:24:42 +0200 From: Ingo Molnar To: Paul Turner , Tejun Heo Cc: Tejun Heo , Austin S Hemmelgarn , Peter Zijlstra , Ingo Molnar , Johannes Weiner , lizefan@huawei.com, cgroups , LKML , kernel-team , Linus Torvalds , Andrew Morton Subject: Re: [PATCH 3/3] sched: Implement interface for cgroup unified hierarchy Message-ID: <20150825092441.GA24131@gmail.com> References: <20150824170427.GA27262@mtj.duckdns.org> <20150824210223.GH28944@mtj.duckdns.org> <20150824211707.GJ28944@mtj.duckdns.org> <20150824214000.GL28944@mtj.duckdns.org> <20150824224936.GO28944@mtj.duckdns.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Paul Turner wrote: > > Anyways, a point here is that threads of the same process competing > > isn't a new problem. There are many ways to make those threads play > > nice as the application itself often has to be involved anyway, > > especially for something like qemu which is heavily involved in > > provisioning resources. > > It's certainly not a new problem, but it's a real one, and it's > _hard_. You're proposing removing the best known solution. Also, just to make sure this is resolved properly, I'm NAK-ing the current scheduler bits in this series: NAKed-by: Ingo Molnar until all of pjt's API design concerns are resolved. This is conceptual, it is not a 'we can fix it later' detail. Tejun, please keep me Cc:-ed to future versions of this series so that I can lift the NAK if things get resolved. Thanks, Ingo