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| author | Sridhar Samudrala <samudrala.sridhar@gmail.com> | 2010-05-30 22:24:39 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2010-07-28 14:45:12 +0200 |
| commit | d7926ee38f5c6e0bbebe712304f99a4c67e40f84 (patch) | |
| tree | 2feae78726dae032741f81fc9590d61693a182f5 /kernel/cgroup.c | |
| parent | vhost: replace vhost_workqueue with per-vhost kthread (diff) | |
| download | linux-d7926ee38f5c6e0bbebe712304f99a4c67e40f84.tar.xz linux-d7926ee38f5c6e0bbebe712304f99a4c67e40f84.zip | |
cgroups: Add an API to attach a task to current task's cgroup
Add a new kernel API to attach a task to current task's cgroup
in all the active hierarchies.
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paul Menage <menage@google.com>
Acked-by: Li Zefan <lizf@cn.fujitsu.com>
Diffstat (limited to 'kernel/cgroup.c')
| -rw-r--r-- | kernel/cgroup.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 422cb19f156e..37642ad9cca8 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -1788,6 +1788,29 @@ out: return retval; } +/** + * cgroup_attach_task_current_cg - attach task 'tsk' to current task's cgroup + * @tsk: the task to be attached + */ +int cgroup_attach_task_current_cg(struct task_struct *tsk) +{ + struct cgroupfs_root *root; + struct cgroup *cur_cg; + int retval = 0; + + cgroup_lock(); + for_each_active_root(root) { + cur_cg = task_cgroup_from_root(current, root); + retval = cgroup_attach_task(cur_cg, tsk); + if (retval) + break; + } + cgroup_unlock(); + + return retval; +} +EXPORT_SYMBOL_GPL(cgroup_attach_task_current_cg); + /* * Attach task with pid 'pid' to cgroup 'cgrp'. Call with cgroup_mutex * held. May take task_lock of task |