linux-kernel - Re: [PATCH RFC nohz_full 0/8] Provide infrastructure for full-system idle

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Date:	Thu, 27 Jun 2013 05:44:24 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu, laijs@...fujitsu.com,
	dipankar@...ibm.com, akpm@...ux-foundation.org,
	mathieu.desnoyers@...icios.com, josh@...htriplett.org,
	niv@...ibm.com, tglx@...utronix.de, rostedt@...dmis.org,
	dhowells@...hat.com, edumazet@...gle.com, darren@...art.com,
	fweisbec@...il.com, sbw@....edu
Subject: Re: [PATCH RFC nohz_full 0/8] Provide infrastructure for full-system
 idle

On Thu, Jun 27, 2013 at 11:42:26AM +0200, Peter Zijlstra wrote:
> On Wed, Jun 26, 2013 at 03:24:42PM -0700, Paul E. McKenney wrote:
> > Just to make sure I understand...  You are saying that it is OK for
> > NO_HZ_FULL to shut down timekeeping if all CPUs are idle, even if some
> > of them are taking NMIs from time to time, right?
> 
> Yeah.. its what we currently do and I don't see any reason to have
> NO_HZ_FULL behave differently there.

Whew!!!  ;-)

							Thanx, Paul

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