From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753559Ab3FEJQc (ORCPT ); Wed, 5 Jun 2013 05:16:32 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:16401 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751870Ab3FEJQ3 (ORCPT ); Wed, 5 Jun 2013 05:16:29 -0400 Message-ID: <51AF0183.8070602@huawei.com> Date: Wed, 5 Jun 2013 17:14:43 +0800 From: Li Zefan User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:17.0) Gecko/20130509 Thunderbird/17.0.6 MIME-Version: 1.0 To: Tejun Heo CC: LKML , Cgroups , Containers Subject: [PATCH v2 00/10] cpuset: implement sane hierarchy behaviors 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 v1 -> v2: - add documentation in include/linux/cgroup.h - drop rcu_read_lock() before calling update_task_nodemask() when iterating cpuset hierarchy ====================================== Currently some cpuset behaviors are not friendly when cpuset is co-mounted with other cgroup controllers. Now with this patchset if cpuset is mounted with sane_behavior option, it behaves differently: - Tasks will be kept in empty cpusets when hotplug happens and take masks of ancestors with non-empty cpus/mems, instead of being moved to an ancestor. - A task can be moved into an empty cpuset, and again it takes masks of ancestors, so the user can drop a task into a newly created cgroup without having to do anything for it. As tasks can reside in empy cpusets, here're some rules: - They can be moved to another cpuset, regardless it's empty or not. - Though it takes masks from ancestors, it takes other configs from the empty cpuset. - If the ancestors' masks are changed, those tasks will also be updated to take new masks. Li Zefan (10): cpuset: remove redundant check in cpuset_cpus_allowed_fallback() cpuset: cleanup guarantee_online_{cpus|mems}() cpuset: remove unnecessary variable in cpuset_attach() cpuset: remove cpuset_test_cpumask() cpuset: re-structure update_cpumask() a bit cpuset: record old_mems_allowed in struct cpuset cpuset: introduce effective_{cpumask|nodemask}_cpuset() cpuset: allow to keep tasks in empty cpusets cpuset: allow to move tasks to empty cpusets cpuset: fix to migrate mm correctly in a corner case -- include/linux/cgroup.h | 7 + kernel/cpuset.c | 342 ++++++++++++++++++++++++++++++++++--------------- 2 files changed, 247 insertions(+), 102 deletions(-)