Re: [tip:core/rcu] Revert "rcu: Decrease memory-barrier usage basedon semi-formal proof"

From: Ingo Molnar
Date: Thu May 26 2011 - 16:27:18 EST



* Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> wrote:

> > > this should also solve load average artifacts - do not
> > > TASK_UNINTERRUPTIBLE tasks skew the load upwards?
> >
> > Quite possibly -- in this case the artifacts would appear just
> > after boot, and would disappear as soon as the RCU kthreads had
> > something to do.
>
> By the way, how would you like to proceed with the fixes thus far?
> I have put them on -rcu for -next testing, FWIW.

I'd suggest to push them to me ASAP, they should get to Linus before
-rc1.

Thanks,

Ingo
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