Re: [PATCH 05/32] nohz: Move rcu dynticks idle mode handling toidle enter/exit APIs

[Paul E. McKenney]

On Fri, Sep 02, 2011 at 10:24:31AM +0200, Peter Zijlstra wrote:
> On Thu, 2011-09-01 at 18:41 -0700, Paul E. McKenney wrote:
> > > Now we could possibly add magic to rcu_read_unlock_special() to restart
> > > the tick in that case.
> > 
> > Not from NMI handlers we can't.  Unless I am really confused about the
> > code that restarts the tick.  Which is not impossible, but ... 
> 
> Uhm.. good point ;-) yes that will be somewhat detrimental to the
> overall OS health if we attempt such a thing.

But if you don't mind, I would very much like to use your question as
a Quick Quiz.  It should be a good one.  ;-)

							Thanx, Paul
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