css will be initialized by cgroup core.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 
        if (!cgrp->parent) {
                /* This is early initialization for the top cgroup */
-               init_task_group.css.cgroup = cgrp;
                return &init_task_group.css;
        }
 
        if (IS_ERR(tg))
                return ERR_PTR(-ENOMEM);
 
-       /* Bind the cgroup to task_group object we just created */
-       tg->css.cgroup = cgrp;
-
        return &tg->css;
 }