From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D26A1C43603 for ; Mon, 16 Dec 2019 17:09:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B410220409 for ; Mon, 16 Dec 2019 17:09:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726916AbfLPRJp (ORCPT ); Mon, 16 Dec 2019 12:09:45 -0500 Received: from Galois.linutronix.de ([193.142.43.55]:53297 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727549AbfLPRJp (ORCPT ); Mon, 16 Dec 2019 12:09:45 -0500 Received: from bigeasy by Galois.linutronix.de with local (Exim 4.80) (envelope-from ) id 1igtsK-0005DS-TW; Mon, 16 Dec 2019 18:09:41 +0100 Date: Mon, 16 Dec 2019 18:09:40 +0100 From: Sebastian Andrzej Siewior To: Scott Wood Cc: Daniel Wagner , linux-rt-users@vger.kernel.org Subject: Re: [PATCH RT] lib: Check for migrate_disable only on SMP systems Message-ID: <20191216170940.bw6xbij5ihs3kojn@linutronix.de> References: <20191206142103.29647-1-dwagner@suse.de> <4513f4a584586a4c17ef14f7365f6275042c3071.camel@redhat.com> <20191206193954.yi5hac366agt7k3o@beryllium.lan> <3ce4699f987e784e84b2030aa3a1c529b274b498.camel@redhat.com> <20191209100447.codml4nop4ibbjkz@beryllium.lan> <1db9c7c960570e975ac0d684d6313ca35a3b1450.camel@redhat.com> <20191216152140.bjaohifj43gn22sz@linutronix.de> <4a8207893353c2802f05ebb467749d54a68d2c15.camel@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <4a8207893353c2802f05ebb467749d54a68d2c15.camel@redhat.com> Sender: linux-rt-users-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rt-users@vger.kernel.org On 2019-12-16 11:06:58 [-0600], Scott Wood wrote: > On Mon, 2019-12-16 at 16:21 +0100, Sebastian Andrzej Siewior wrote: > > On 2019-12-09 18:40:37 [-0600], Scott Wood wrote: > > > Actually it looks like we're saved from the false positives by the > > > following check for nr_cpus_allowed == 1, which should always be true on > > > UP. > > > > we currently don't. > > Currently don't what? Update the migrate_disable counter for UP without CONFIG_SCHED_DEBUG. > -Scott Sebastian