From mboxrd@z Thu Jan 1 00:00:00 1970 From: Li Zefan Subject: Re: [PATCHSET] cpuset: drop cpuset->stack_list and ->parent, take#2 Date: Sun, 6 Jan 2013 17:27:46 +0800 Message-ID: <50E94392.2050509@huawei.com> References: <1357249446-25075-1-git-send-email-tj@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1357249446-25075-1-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Tejun Heo Cc: paul-inf54ven1CmVyaH7bEyXVA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, mhocko-AlSwsSmVLrQ@public.gmane.org, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org On 2013/1/4 5:44, Tejun Heo wrote: > Hello, guys. > > This is the second take of "drop cpuset->stack_list and ->parent" > patchset. Other than being rebased on top of v3.8-rc2 + "cpuset: > decouple cpuset locking from cgroup core, take#2", nothing really has > changed. > > The original patchset description follows. > > cpuset implements its own descendant iteration using > cpuset->stack_list and has its own ->parent pointer. There's nothing > cpuset specific about descendant walking or finding the parent. This > patchset makes cpuset use cgroup generic API instead. > > 0001-cpuset-implement-cgroup_rightmost_descendant.patch > 0002-cpuset-replace-cpuset-stack_list-with-cpuset_for_eac.patch > 0003-cpuset-remove-cpuset-parent.patch > > 0001 implements cgroup_rightmost_descendant() which can be used to > skip subtree during pre-order tree walk. Michal, maybe memcg can use > it too? > > 0002 replaces cpuset->stack_list with generic > for_each_descendasnt_pre(). > > 0003 replaces cpuset->parent with cgroup->parent. > > This patchset is on top of > > v3.8-rc2 d1c3ed669a2d452cacfb48c2d171a1f364dae2ed > + [1] "[PATCHSET cgroup/for-3.8] cpuset: decouple cpuset locking from cgroup core, take#2" > > and available in the following git branch. > > git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git review-cpuset-iter > > include/linux/cgroup.h | 1 > kernel/cgroup.c | 26 ++++++++ > kernel/cpuset.c | 151 +++++++++++++++++++++---------------------------- > 3 files changed, 92 insertions(+), 86 deletions(-) > Acked-by: Li Zefan