diff options
| author | Tejun Heo <tj@kernel.org> | 2013-04-07 09:29:50 -0700 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2013-04-07 09:29:50 -0700 |
| commit | 8cc9934520e7f752fe45d5199664d741ba24a932 (patch) | |
| tree | 881744c4c1c69f4c5afc46b80adb1dd71caf58ff /include | |
| parent | d9c10ddddc98db0a316243cd266c466875975a94 (diff) | |
cgroup, cpuset: replace move_member_tasks_to_cpuset() with cgroup_transfer_tasks()
When a cpuset becomes empty (no CPU or memory), its tasks are
transferred with the nearest ancestor with execution resources. This
is implemented using cgroup_scan_tasks() with a callback which grabs
cgroup_mutex and invokes cgroup_attach_task() on each task.
Both cgroup_mutex and cgroup_attach_task() are scheduled to be
unexported. Implement cgroup_transfer_tasks() in cgroup proper which
is essentially the same as move_member_tasks_to_cpuset() except that
it takes cgroups instead of cpusets and @to comes before @from like
normal functions with those arguments, and replace
move_member_tasks_to_cpuset() with it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cgroup.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 01c48c6806d..f8eb01d75dd 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -696,6 +696,7 @@ int cgroup_scan_tasks(struct cgroup_scanner *scan); int cgroup_attach_task(struct cgroup *cgrp, struct task_struct *tsk, bool threadgroup); int cgroup_attach_task_all(struct task_struct *from, struct task_struct *); +int cgroup_transfer_tasks(struct cgroup *to, struct cgroup *from); /* * CSS ID is ID for cgroup_subsys_state structs under subsys. This only works |