From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752015AbdFTRjL (ORCPT ); Tue, 20 Jun 2017 13:39:11 -0400 Received: from mx1.redhat.com ([209.132.183.28]:52068 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750979AbdFTRjK (ORCPT ); Tue, 20 Jun 2017 13:39:10 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 58584970FE Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=riel@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 58584970FE Message-ID: <1497980348.20270.104.camel@redhat.com> Subject: Re: [PATCH 2/3] nohz: Move idle balancer registration to idle path From: Rik van Riel To: Frederic Weisbecker , Peter Zijlstra Cc: LKML , Thomas Gleixner , Ingo Molnar Date: Tue, 20 Jun 2017 13:39:08 -0400 In-Reply-To: <1497838322-10913-3-git-send-email-fweisbec@gmail.com> References: <1497838322-10913-1-git-send-email-fweisbec@gmail.com> <1497838322-10913-3-git-send-email-fweisbec@gmail.com> Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-mrJ49DSjBEQpFuFokDat" Mime-Version: 1.0 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Tue, 20 Jun 2017 17:39:10 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-mrJ49DSjBEQpFuFokDat Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, 2017-06-19 at 04:12 +0200, Frederic Weisbecker wrote: > The idle load balancing registration path assumes that we only stop > the > tick when the CPU is idle, ignoring the nohz full case. As a result, > a > nohz full CPU that is running a task may be chosen to perform idle > load > balancing. >=20 > Lets make sure that only CPUs in dynticks idle mode can be picked as > idle load balancers. Woah. Dang. > Signed-off-by: Frederic Weisbecker > Cc: Thomas Gleixner > Cc: Ingo Molnar > Cc: Rik van Riel > Cc: Peter Zijlstra Acked-by: Rik van Riel --=20 All rights reversed --=-mrJ49DSjBEQpFuFokDat Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAABCAAGBQJZSV28AAoJEM553pKExN6D0FYH/1mTqdj9BPNR3ZLinmGcflWU luLRd8XNWfdzGluhyXG37Fqr5K31ZYVPeLNH50dd7pwQge6cgzuHXFe14eq2hV0C 2CtZgu/X9q74lRnDmQO95LcGlK/ybWkF2YZ6hEZrdMm2XK+3SnM+qGLxTo+0XXKi naUr7tTRLg3Qk1rEltcbAt4EKg1mp44sRvJ4KVwSU7lrjw6z+W6yu34yE2BrC3A6 iNA6hZ4+qsStwiw91ozyCVJ9FxSi4EMmyu+AhFolARMrlafCWIGkmmEcsreeXZxx ToiIlD5zdPzX4sg2XPD31cAOBAbqcTdrsZSP3BR/IOdG0MIZaSrYTojr4KZHTic= =4Y5O -----END PGP SIGNATURE----- --=-mrJ49DSjBEQpFuFokDat--