On Tue, Nov 01, 2011 at 04:46:29PM -0700, Tejun Heo wrote: > cgroup_attach_proc() behaves differently from cgroup_attach_task() in > the following aspects. > > * All hooks are invoked even if no task is actually being moved. > > * ->can_attach_task() is called for all tasks in the group whether the > new cgrp is different from the current cgrp or not; however, > ->attach_task() is skipped if new equals new. This makes the calls > asymmetric. > > This patch improves old cgroup handling in cgroup_attach_proc() by > looking up the current cgroup at the head, recording it in the flex > array along with the task itself, and using it to remove the above two > differences. This will also ease further changes. > > -v2: nr_todo renamed to nr_migrating_tasks as per Paul Menage's > suggestion. > > Signed-off-by: Tejun Heo <tj@xxxxxxxxxx> > Acked-by: Paul Menage <paul@xxxxxxxxxxxxxx> > Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> > Cc: Li Zefan <lizf@xxxxxxxxxxxxxx> Reviewed-by: Frederic Weisbecker <fweisbec@xxxxxxxxx> _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/linux-pm
