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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 20B87C43441 for ; Mon, 12 Nov 2018 15:02:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BCF0E2241E for ; Mon, 12 Nov 2018 15:02:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BCF0E2241E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=perches.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729421AbeKMAzs (ORCPT ); Mon, 12 Nov 2018 19:55:48 -0500 Received: from smtprelay0207.hostedemail.com ([216.40.44.207]:44135 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726385AbeKMAzs (ORCPT ); Mon, 12 Nov 2018 19:55:48 -0500 Received: from filter.hostedemail.com (clb03-v110.bra.tucows.net [216.40.38.60]) by smtprelay06.hostedemail.com (Postfix) with ESMTP id 094B718227D91; Mon, 12 Nov 2018 15:02:10 +0000 (UTC) X-Session-Marker: 6A6F6540706572636865732E636F6D X-HE-Tag: moon00_8728da11fe052 X-Filterd-Recvd-Size: 2014 Received: from XPS-9350.home (unknown [47.151.153.53]) (Authenticated sender: joe@perches.com) by omf03.hostedemail.com (Postfix) with ESMTPA; Mon, 12 Nov 2018 15:02:08 +0000 (UTC) Message-ID: <6cc250180e2cea8726a08c35f1020b200cc2bd5e.camel@perches.com> Subject: Re: [PATCH RFC] locking/lockdep: replace simple printk by pr_info From: Joe Perches To: Corentin Labbe , mingo@redhat.com, peterz@infradead.org, will.deacon@arm.com Cc: linux-kernel@vger.kernel.org Date: Mon, 12 Nov 2018 07:02:07 -0800 In-Reply-To: <1542027794-2255-1-git-send-email-clabbe@baylibre.com> References: <1542027794-2255-1-git-send-email-clabbe@baylibre.com> Content-Type: text/plain; charset="ISO-8859-1" User-Agent: Evolution 3.30.1-1build1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2018-11-12 at 13:03 +0000, Corentin Labbe wrote: > While working on detector of new warn/err/crit/... messages, I found that the > following messages was printed with the warn loglevel: > [ 0.001607] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar > [ 0.001625] ... MAX_LOCKDEP_SUBCLASSES: 8 > [ 0.001641] ... MAX_LOCK_DEPTH: 48 > [ 0.001658] ... MAX_LOCKDEP_KEYS: 8191 > [ 0.001673] ... CLASSHASH_SIZE: 4096 > [ 0.001689] ... MAX_LOCKDEP_ENTRIES: 32768 > [ 0.001704] ... MAX_LOCKDEP_CHAINS: 65536 > [ 0.001719] ... CHAINHASH_SIZE: 32768 > [ 0.001735] memory used by lock dependency info: 4623 kB > > While the cause is still unknown to me, converting printk to pr_info fixed the issue. because in lib/Kconfig.debug config MESSAGE_LOGLEVEL_DEFAULT int "Default message log level (1-7)" range 1 7 default "4" help Default log level for printk statements with no specified priority. This was hard-coded to KERN_WARNING since at least 2.6.10 but folks that are auditing their logs closely may want to set it to a lower priority.