Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755125AbbGQRQA (ORCPT ); Fri, 17 Jul 2015 13:16:00 -0400 Received: from mail-wi0-f172.google.com ([209.85.212.172]:36420 "EHLO mail-wi0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755006AbbGQRP7 (ORCPT ); Fri, 17 Jul 2015 13:15:59 -0400 Message-ID: <1437153348.5860.32.camel@gmail.com> Subject: Re: [RFC] workqueue: avoiding unbounded wq on isolated CPUs by default From: Mike Galbraith To: Tejun Heo Cc: Daniel Bristot de Oliveira , LKML , Lai Jiangshan , Frederic Weisbecker , Rik van Riel , "Luis Claudio R. Goncalves" Date: Fri, 17 Jul 2015 19:15:48 +0200 In-Reply-To: <20150717152720.GD15934@mtj.duckdns.org> References: <9e53de7c91c885ee255e16ee25f401d9eedf08d9.1437067317.git.bristot@redhat.com> <20150716192448.GY15934@mtj.duckdns.org> <1437107190.3438.23.camel@gmail.com> <20150717152720.GD15934@mtj.duckdns.org> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.12.11 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 681 Lines: 17 On Fri, 2015-07-17 at 11:27 -0400, Tejun Heo wrote: > I'm just curious whether there was any specific reason we didn't do > this before (ISTR people discussing it back then too). I'm dead set against all this auto-presume nonsense fwtw Allocating a pool of no_hz_full _capable_ CPUs should not entice the kernel to make any rash assumptions. Let users do the button poking, they know what they want, and when they want it. -Mike -- 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/