From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: [PATCHSET cgroup/for-3.17] cgroup: distinguish the default and legacy hierarchies when handling cftypes Date: Wed, 2 Jul 2014 19:50:50 -0400 Message-ID: <1404345055-8196-1-git-send-email-tj@kernel.org> Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:from:to:cc:subject:date:message-id; bh=3/o/qnHZY0xFD271iXLToKgoqPlia23w+TDec+SVKtM=; b=qq6NGrVwe9aGMAzPF8wDiyVAlyim8H/RHM7NxZ0Dl75Cc2OPxs1L4inK5tU6KGLKP6 C8ttfhOljhvgF/YhKuStvjQvxEDwj5iM6bIJGCc792DdDjzu6oWRCXXuGykiy/kfaGnt Ch8NXKEhI1ddNl1YYVQaiFWtNYftzG+v8ADwwGXiWLSpzVFMmfC5jklVqexk48d47fyG 7K99AqT3YMbpPPAedNHhvxuNLiGPrlUx22xPejxDk0CPrGkMUOQuLqBNzoSaWnfzu5FK +Cj8HsoyLtMdkguZTqtsGwlJGQDAcqVjHh78JSqlHWSD5KbkWvY9AxJlYJyaVXauwQsR WohQ== Sender: linux-kernel-owner@vger.kernel.org List-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lizefan@huawei.com Cc: cgroups@vger.kernel.org, linux-kernel@vger.kernel.org Hello, Until now, cftype arrays carried files for both the default and legacy hierarchies and the files which needed to be used on only one of them were flagged with either CFTYPE_ONLY_ON_DFL or CFTYPE_INSANE. This gets confusing very quickly and we may end up exposing interface files to the default hierarchy without thinking it through. This patchset makes cgroup core provide separate sets of interfaces for cftype handling so that the cftypes for the default and legacy hierarchies are clearly distinguished. This makes all the existing subsystem interface files legacy-only by default and all subsystems will have no interface file created when enabled on the default hierarchy. Each subsystem should explicitly review and compose the interface for the default hierarchy. This patchset contains the following five patches. 0001-cgroup-split-cgroup_base_files-into-cgroup_-dfl-lega.patch 0002-cgroup-rename-cgroup_subsys-base_cftypes-to-legacy_c.patch 0003-cgroup-replace-cgroup_add_cftypes-with-cgroup_add_le.patch 0004-cgroup-distinguish-the-default-and-legacy-hierarchie.patch 0005-cgroup-make-CFTYPE_ONLY_ON_DFL-and-CFTYPE_NO_-intern.patch This patchset is on top of a497c3ba1d97 ("Linux 3.16-rc2") + [1] [PATCHSET cgroup/for-3.17] cgroup: remove sane_behavior support on non-default hierarchies and available in the following git branch. git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git review-dfl_files diffstat follows. Thanks. block/blk-cgroup.c | 5 - include/linux/cgroup.h | 17 +++-- kernel/cgroup.c | 146 ++++++++++++++++++++++++++++++++----------- kernel/cgroup_freezer.c | 2 kernel/cpuset.c | 2 kernel/sched/core.c | 2 kernel/sched/cpuacct.c | 2 mm/hugetlb_cgroup.c | 5 - mm/memcontrol.c | 6 - net/core/netclassid_cgroup.c | 2 net/core/netprio_cgroup.c | 2 net/ipv4/tcp_memcontrol.c | 2 security/device_cgroup.c | 2 13 files changed, 139 insertions(+), 56 deletions(-) -- tejun [1] http://lkml.kernel.org/g/1404344747-7957-1-git-send-email-tj@kernel.org