Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755316AbaGIIq6 (ORCPT ); Wed, 9 Jul 2014 04:46:58 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:54498 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752781AbaGIIqy (ORCPT ); Wed, 9 Jul 2014 04:46:54 -0400 Message-ID: <53BD0174.4060002@huawei.com> Date: Wed, 9 Jul 2014 16:46:44 +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 Subject: [PATCH v3 00/12] cpuset: separate configured masks and effective masks Content-Type: text/plain; charset="GB2312" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.177.18.230] 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 for default hierarchy - 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. v3: - rebased against "cgroup: remove sane_behavior support on non-default hierarchies" - addressed previous review comments - adjusted some code, comment and changelog slightly v2: - fixed two bugs - made changelogs more verbose - added more comments - changed cs->real_{mems,cpus}_allowed to cs->effective_{mems, cpus} - splitted "cpuset: enable onlined cpu/node in effective masks" into 2 patches - exported cpuset.effective_{cpus,mems} unconditionally Li Zefan (12): cpuset: add cs->effective_cpus and cs->effective_mems cpuset: update cpuset->effective_{cpus,mems} at hotplug cpuset: update cs->effective_{cpus,mems} when config changes cpuset: inherit ancestor's masks if effective_{cpus,mems} becomes empty cpuset: use effective cpumask to build sched domains cpuset: initialize top_cpuset's configured masks at mount cpuset: apply cs->effective_{cpus,mems} cpuset: make cs->{cpus,mems}_allowed as user-configured masks cpuset: refactor cpuset_hotplug_update_tasks() cpuset: enable onlined cpu/node in effective masks cpuset: allow writing offlined masks to cpuset.cpus/mems cpuset: export effective masks to userspace kernel/cpuset.c | 493 ++++++++++++++++++++++++++++++++++---------------------- 1 file changed, 304 insertions(+), 189 deletions(-) -- 1.8.0.2 -- 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/