From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752469Ab3HUJ64 (ORCPT ); Wed, 21 Aug 2013 05:58:56 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:36613 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752131Ab3HUJ6z (ORCPT ); Wed, 21 Aug 2013 05:58:55 -0400 Message-ID: <52148F52.0@huawei.com> Date: Wed, 21 Aug 2013 17:58:42 +0800 From: Li Zefan User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:17.0) Gecko/20130801 Thunderbird/17.0.8 MIME-Version: 1.0 To: Tejun Heo CC: LKML , Cgroups , Containers Subject: [PATCH 00/11] cpuset: separate configured masks and effective masks Content-Type: text/plain; charset="GB2312" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.135.68.215] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patcheset introduces behavior changes, but only if you mount cgroupfs with sane_behavior option: - We introduce new interfaces cpuset.effective_cpus and cpuset.effective_mems, while cpuset.cpus and cpuset.mems will be configured masks. - The configured masks can be changed by writing cpuset.cpus/mems only. They won't be changed when hotplug happens. - Users can config cpus and mems without restrictions from the parent cpuset. effective masks will enforce the hierarchical behavior. - Users can also config cpus and mems to have already offlined CPU/nodes. - When a CPU/node is onlined, it will be brought back to the effective masks if it's in the configured masks. - We build sched domains based on effective cpumask but not configured cpumask. Li Zefan (11): cgroup: allow subsystems to create files for sane_behavior only cpuset: add cs->real_cpus_allowed and cs->real_mems_allowed cpuset: update cpuset->real_{cpus,mems}_allowed at hotplug cpuset: update cs->real_{cpus,mems}_allowed when config changes cpuset: inherite ancestor's masks if real_{cpus,mems}_allowed become empty cpuset: apply cs->real_{cpus,mems}_allowed cpuset: use effective cpumask to build sched domains cpuset: separate configured masks and efffective masks cpuset: enable onlined cpu/node in effective masks cpuset: allow writing offlined masks to cpuset.cpus/mems cpuset: export effective masks to userspace include/linux/cgroup.h | 1 + kernel/cgroup.c | 2 + kernel/cpuset.c | 466 ++++++++++++++++++++++++++++--------------------- 3 files changed, 271 insertions(+), 198 deletions(-) -- 1.8.0.2