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    SubjectRe: [RFD 1/9] Change cpustat fields to an array.
    On 09/27/2011 06:03 PM, Peter Zijlstra wrote:
    > 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?
    You're right. I had something else from another work I'm doing in mind
    and got confused.
    Will remove it.


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