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SubjectRe: [RFD 1/9] Change cpustat fields to an array.
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On Fri, 2011-09-23 at 19:20 -0300, Glauber Costa wrote:
> @@ -623,6 +624,9 @@ static inline struct task_group *task_group(struct
> task_struct *p)
> struct task_group *tg;
> struct cgroup_subsys_state *css;
>
> + if (!p->mm)
> + return &root_task_group;
> +
> css = task_subsys_state_check(p, cpu_cgroup_subsys_id,
> lockdep_is_held(&p->pi_lock) ||
> lockdep_is_held(&task_rq(p)->lock));

Hmm, why is that? Aren't kthreads part of the cgroup muck just as much
as normal tasks are?


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