Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752254AbaBKPYZ (ORCPT ); Tue, 11 Feb 2014 10:24:25 -0500 Received: from e31.co.us.ibm.com ([32.97.110.149]:34551 "EHLO e31.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751969AbaBKPYX (ORCPT ); Tue, 11 Feb 2014 10:24:23 -0500 Date: Tue, 11 Feb 2014 07:24:16 -0800 From: "Paul E. McKenney" To: Frederic Weisbecker Cc: Paul Gortmaker , linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] nohz: ensure users are aware boot CPU is not NO_HZ_FULL Message-ID: <20140211152416.GT4250@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com References: <52F3D583.9070208@windriver.com> <1391711781-7466-1-git-send-email-paul.gortmaker@windriver.com> <20140210161933.GB21060@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140210161933.GB21060@localhost.localdomain> User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14021115-8236-0000-0000-000006F7F1FC Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Feb 10, 2014 at 05:19:34PM +0100, Frederic Weisbecker wrote: > On Thu, Feb 06, 2014 at 01:36:21PM -0500, Paul Gortmaker wrote: > > This bit of information is in the Kconfig help text: > > > > Note the boot CPU will still be kept outside the range to > > handle the timekeeping duty. > > > > However neither the variable NO_HZ_FULL_ALL, or the prompt > > convey this important detail, so lets add it to the prompt > > to make it more explicitly obvious to the average user. > > > > Cc: Frederic Weisbecker > > Cc: "Paul E. McKenney" > > Paul, I guess I can keep your ack on this 2nd version? Please do! Thanx, Paul > > Signed-off-by: Paul Gortmaker > > Applied, thanks a lot! > > > --- > > > > v2: use "CPU 0" instead of "boot CPU". > > > > kernel/time/Kconfig | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/kernel/time/Kconfig b/kernel/time/Kconfig > > index 3ce6e8c5f3fc..f448513a45ed 100644 > > --- a/kernel/time/Kconfig > > +++ b/kernel/time/Kconfig > > @@ -124,7 +124,7 @@ config NO_HZ_FULL > > endchoice > > > > config NO_HZ_FULL_ALL > > - bool "Full dynticks system on all CPUs by default" > > + bool "Full dynticks system on all CPUs by default (except CPU 0)" > > depends on NO_HZ_FULL > > help > > If the user doesn't pass the nohz_full boot option to > > -- > > 1.8.5.2 > > > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > > the body of a message to majordomo@vger.kernel.org > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > Please read the FAQ at http://www.tux.org/lkml/ > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/