From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933008AbbDNQqB (ORCPT ); Tue, 14 Apr 2015 12:46:01 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:37723 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932957AbbDNQpy (ORCPT ); Tue, 14 Apr 2015 12:45:54 -0400 Date: Tue, 14 Apr 2015 18:45:37 +0200 From: Peter Zijlstra To: Frederic Weisbecker Cc: Chris Metcalf , "Paul E. McKenney" , "Rafael J. Wysocki" , Martin Schwidefsky , Ingo Molnar , linux-kernel@vger.kernel.org Subject: Re: [PATCH v8 2/2] nohz: set isolcpus when nohz_full is set Message-ID: <20150414164537.GN5029@twins.programming.kicks-ass.net> References: <20150414003711.GD6121@lerouge> <1429024675-18938-1-git-send-email-cmetcalf@ezchip.com> <1429024675-18938-2-git-send-email-cmetcalf@ezchip.com> <20150414152643.GB1781@lerouge> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150414152643.GB1781@lerouge> User-Agent: Mutt/1.5.21 (2012-12-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 14, 2015 at 05:26:45PM +0200, Frederic Weisbecker wrote: > On Tue, Apr 14, 2015 at 11:17:55AM -0400, Chris Metcalf wrote: > > nohz_full is only useful with isolcpus also set, since otherwise the > > scheduler has to run periodically to try to determine whether to steal > > work from other cores. > > > > Accordingly, when booting with nohz_full=xxx on the command line, we > > should act as if isolcpus=xxx was also set, and set (or extend) the > > isolcpus set to include the nohz_full cpus. > > > > Acked-by: Frederic Weisbecker > > No need to put my ack, since I'll add my Signed-off-by when I apply the patches. > Note this won't go through this merge window though as we are in the middle of > it already. > > Peter, are you ok with these two patches? Yeah, Acked-by: Peter Zijlstra (Intel)