Re: [PATCH RFC nohz_full v2 2/7] nohz_full: Add rcu_dyntick data forscalable detection of all-idle state

[Paul E. McKenney]

On Tue, Jul 02, 2013 at 07:10:52AM +0200, Mike Galbraith wrote:
> On Mon, 2013-07-01 at 12:16 -0700, Paul E. McKenney wrote: 
> > On Mon, Jul 01, 2013 at 11:34:13AM -0700, Josh Triplett wrote:
> 
> > > > > This also naturally raises the question "How can we let userspace get
> > > > > accurate time without forcing a timer tick?".
> > > > 
> > > > We don't.  ;-)
> > > 
> > > We don't currently, hence my question about how we can. :)
> > 
> > Per-CPU atomic clocks?
> 
> Great idea, who needs timekeeping code. 
> 
> http://www.euronews.com/2013/04/02/swiss-sets-sights-on-miniscule-atomic-clock/

"in theory youâll only need to set it once every 3,000 years, providing
of course your battery lasts that long" ;-) ;-) ;-)

							Thanx, Paul

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