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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 2F682C43331 for ; Thu, 7 Nov 2019 18:58:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 00D862085B for ; Thu, 7 Nov 2019 18:58:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725883AbfKGS6M (ORCPT ); Thu, 7 Nov 2019 13:58:12 -0500 Received: from mx2.suse.de ([195.135.220.15]:55552 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725818AbfKGS6M (ORCPT ); Thu, 7 Nov 2019 13:58:12 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 29C1AAAC2; Thu, 7 Nov 2019 18:58:11 +0000 (UTC) Date: Thu, 7 Nov 2019 10:53:58 -0800 From: Davidlohr Bueso To: Sebastian Andrzej Siewior Cc: linux-rt-users@vger.kernel.org, tglx@linutronix.de Subject: Re: rcu stalls with pi_stress in latest rt Message-ID: <20191107185358.idayofpic7itcd5l@linux-p48b> References: <20191028182258.76o6qnbgmzm525ff@linux-p48b> <20191104152931.dzdhn3wwilohlttc@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20191104152931.dzdhn3wwilohlttc@linutronix.de> User-Agent: NeoMutt/20180716 Sender: linux-rt-users-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rt-users@vger.kernel.org On Mon, 04 Nov 2019, Sebastian Andrzej Siewior wrote: >That means you might not have RCU-boost enabled. Alas, that was it. I was going to send you a patch that enabled the option when PREEMPT_RT_FULL, but then realized I was using a busted config file. It specifically didn't have CONFIG_RCU_BOOST enabled. Thanks for having a look!