From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org,
hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org
Cc: cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
kernel-team-b10kYP2dOMg@public.gmane.org
Subject: [PATCHSET cgroup/for-4.6] cgroup: make control mask updates modular and recursive
Date: Mon, 22 Feb 2016 22:45:34 -0500 [thread overview]
Message-ID: <1456199146-14765-1-git-send-email-tj@kernel.org> (raw)
Hello,
Currently, subsystem enabling and disabling in the default hierarchy
are implemented as a long chain of interdependent operations in
cgroup_subtree_control_write(). The function calculates what need to
be done to its children and excute the necessary operations. The
function unfortunately ends up being a rather opaque blob of
operations which is difficult to wrap one's head around or reuse.
This patchset restructures control mask update so that it's composed
of discrete idempotent and recursive operations. While no new
features are added by this patchset, future changes will make use of
flexible control mask updates to implement features involving more
complex controller management.
This patchset includes the following 12 patches.
0001-cgroup-separate-out-interface-file-creation-from-css.patch
0002-cgroup-explicitly-track-whether-a-cgroup_subsys_stat.patch
0003-cgroup-reorder-operations-in-cgroup_mkdir.patch
0004-cgroup-factor-out-cgroup_create-out-of-cgroup_mkdir.patch
0005-cgroup-introduce-cgroup_control-and-cgroup_ss_mask.patch
0006-cgroup-factor-out-cgroup_drain_offline-from-cgroup_s.patch
0007-cgroup-factor-out-cgroup_apply_control_disable-from-.patch
0008-cgroup-factor-out-cgroup_apply_control_enable-from-c.patch
0009-cgroup-make-cgroup_drain_offline-and-cgroup_apply_co.patch
0010-cgroup-introduce-cgroup_-save-propagate-restore-_con.patch
0011-cgroup-Factor-out-cgroup_-apply-finalize-_control-fr.patch
0012-cgroup-make-cgroup_calc_subtree_ss_mask-take-this_ss.patch
The patchset is on top of cgroup/for-4.6 6e5c830770f ("cgroup: make
cgroup subsystem masks u16") and available in the following git
branch.
git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git review-recursive-control
diffstat follows. Thanks.
include/linux/cgroup-defs.h | 3
kernel/cgroup.c | 653 ++++++++++++++++++++++++++++----------------
2 files changed, 419 insertions(+), 237 deletions(-)
--
tejun
next reply other threads:[~2016-02-23 3:45 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-23 3:45 Tejun Heo [this message]
2016-02-23 3:45 ` [PATCH 01/12] cgroup: separate out interface file creation from css creation Tejun Heo
2016-02-23 3:45 ` [PATCH 02/12] cgroup: explicitly track whether a cgroup_subsys_state is visible to userland Tejun Heo
2016-02-23 3:45 ` [PATCH 03/12] cgroup: reorder operations in cgroup_mkdir() Tejun Heo
2016-02-23 3:45 ` [PATCH 04/12] cgroup: factor out cgroup_create() out of cgroup_mkdir() Tejun Heo
2016-02-23 3:45 ` [PATCH 05/12] cgroup: introduce cgroup_control() and cgroup_ss_mask() Tejun Heo
2016-02-23 3:45 ` [PATCH 06/12] cgroup: factor out cgroup_drain_offline() from cgroup_subtree_control_write() Tejun Heo
[not found] ` <1456199146-14765-1-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2016-02-23 3:45 ` [PATCH 07/12] cgroup: factor out cgroup_apply_control_disable() " Tejun Heo
2016-02-23 3:45 ` [PATCH 08/12] cgroup: factor out cgroup_apply_control_enable() " Tejun Heo
2016-02-23 3:45 ` [PATCH 11/12] cgroup: Factor out cgroup_{apply|finalize}_control() " Tejun Heo
2016-02-23 3:45 ` [PATCH 09/12] cgroup: make cgroup_drain_offline() and cgroup_apply_control_{disable|enable}() recursive Tejun Heo
2016-02-23 3:45 ` [PATCH 10/12] cgroup: introduce cgroup_{save|propagate|restore}_control() Tejun Heo
2016-02-23 3:45 ` [PATCH 12/12] cgroup: make cgroup_calc_subtree_ss_mask() take @this_ss_mask Tejun Heo
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