Re: [RFC patch 2/5] smpboot: Provide infrastructure for percpu hotplug threads

Thomas Gleixner
2012-06-14T15:08:12Z

On Thu, 14 Jun 2012, Paul E. McKenney wrote:
> On Thu, Jun 14, 2012 at 04:12:14PM +0200, Thomas Gleixner wrote:
> > > > Btw, if that simpler yield approach is working and I can't see why it
> > > > shouldn't then you can get rid of the node task as well. The only
> > > > purpose of it is to push up the priority of yielding tasks, right?
> > >
> > > Ah, missed that it calls rcu_initiate_boost() as well....
> >
> > And looking further, I really don't understand why it's doing
> > that. That node thread is only woken by these weird yield timers.
>
> If your patch works out, it indeed might be possible to get rid of
> ->node_kthread_task. The ->boost_kthread_task needs to stay, however.

That's right.