From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753399AbbIRJQA (ORCPT ); Fri, 18 Sep 2015 05:16:00 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:27300 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753120AbbIRJPQ (ORCPT ); Fri, 18 Sep 2015 05:15:16 -0400 Subject: Re: [PATCHSET] cgroup: use static_keys for subsystem enabled and on_dfl tests To: Tejun Heo , References: <1442368285-16306-1-git-send-email-tj@kernel.org> CC: , , From: Zefan Li Message-ID: <55FBD5DF.7060501@huawei.com> Date: Fri, 18 Sep 2015 17:14:07 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 MIME-Version: 1.0 In-Reply-To: <1442368285-16306-1-git-send-email-tj@kernel.org> Content-Type: text/plain; charset="gbk"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.177.19.236] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2015/9/16 9:51, Tejun Heo wrote: > cgroup_subsys->disabled and cgroup_on_dfl() tests are likely to be > used in hot paths and seldom change. The former is set once during > boot and the latter only when a controller is migrated between the > default hierarchy and traditional ones. > > This patchset makes these tests static_key based and contains the > following four patches. > > 0001-jump_label-make-static_key_enabled-work-on-static_ke.patch > 0002-cgroup-implement-static_key-based-cgroup_subsys_enab.patch > 0003-cgroup-replace-cgroup_subsys-disabled-tests-with-cgr.patch > 0004-cgroup-replace-cgroup_on_dfl-tests-in-controllers-wi.patch > > 0001 is a prep patch in jump_label. 0002 adds the needed static_keys. > 0003-0004 convert the existing usages and drop the old tests. > > This patchset is on top of v4.3-rc1 and is availalbe in the following > git branch. > > git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git review-jump-labels > > diffstat follows. Thanks. > > block/blk-throttle.c | 2 > block/cfq-iosched.c | 4 - > include/linux/cgroup-defs.h | 1 > include/linux/cgroup.h | 79 +++++++--------------------- > include/linux/hugetlb_cgroup.h | 4 - > include/linux/jump_label.h | 18 +++--- > include/linux/memcontrol.h | 4 - > kernel/cgroup.c | 113 ++++++++++++++++++++++++++++++++++++++--- > kernel/cpuset.c | 23 ++++---- > mm/memcontrol.c | 4 - > 10 files changed, 157 insertions(+), 95 deletions(-) > Acked-by: Zefan Li