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SubjectRe: [RFC/RFT PATCH] sched: automated per tty task groups
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On Tue, 2010-10-19 at 11:29 +0200, Peter Zijlstra wrote:
> On Tue, 2010-10-19 at 11:16 +0200, Mike Galbraith wrote:
> > + read_lock_irqsave(&tasklist_lock, flags);
> > +
> > + rcu_read_lock();
> > + for_each_process(p) {
> > + tg = task_group(p);
> > + tty_sched_move_task(p, tg);
> > + list_for_each_entry_rcu(t, &p->thread_group, thread_group) {
> > + tty_sched_move_task(t, tg);
> > + }
> > + }
> > + rcu_read_unlock();
> > +
> > + read_unlock_irqrestore(&tasklist_lock, flags);
>
> I don't think you need to disable IRQs for tasklist lock, nor do I think
> you actually need it.

OK, thanks. (No such thing as too paranoid;)

-Mike



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