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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,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 30755C2D0DC for ; Thu, 2 Jan 2020 18:01:51 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0832020866 for ; Thu, 2 Jan 2020 18:01:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ubJ9SIdm" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0832020866 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=mit.edu Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=262OYwHS9sF7aDP7U0bdKBpIPDZCCdvYqEhhGhgT8Zo=; b=ubJ9SIdmZNFVsp ZvVECRFHuwjjhFWpy2xCNkRo1xX2ngCmr8HBueEUhwDLzfVlwpXIVWajd8mqAk1YqvOX0Ps7s4hcs pLMOQIt3rW2dLb80r/K83pDh9q5R9B2sQ5GVpmy0OMC3HfO6UOjn8IvjMocTKoXVeNHeh9VR0hbQt XGbeOlKZzHw/gkWF3VghIV6PDKvW4pK9bv2k5Jpo50DgmIDkUDUiDFn7sTE69ju50qhjF6GtrHZhu kb8VUfouLjB74WHn/SRa6dK0XsF0TlRM0oPuAstNykVze9Oki7p5abcYwDFNm+jQmE4VF3zummnM5 51whlPhizUNzHw2E5TuQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1in4n3-0007V5-6j; Thu, 02 Jan 2020 18:01:45 +0000 Received: from outgoing-auth-1.mit.edu ([18.9.28.11] helo=outgoing.mit.edu) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1in4mz-0007Tw-9Q for linux-arm-kernel@lists.infradead.org; Thu, 02 Jan 2020 18:01:42 +0000 Received: from callcc.thunk.org (guestnat-104-133-0-111.corp.google.com [104.133.0.111] (may be forged)) (authenticated bits=0) (User authenticated as tytso@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id 002I0Y6w020811 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 2 Jan 2020 13:00:35 -0500 Received: by callcc.thunk.org (Postfix, from userid 15806) id 3EE664200AF; Thu, 2 Jan 2020 13:00:34 -0500 (EST) Date: Thu, 2 Jan 2020 13:00:34 -0500 From: "Theodore Y. Ts'o" To: Qian Cai Subject: Re: [PATCH] char/random: silence a lockdep splat with printk() Message-ID: <20200102180034.GA197330@mit.edu> References: <20191205010055.GO93017@google.com> <4F9E9335-334B-4600-8BC3-4AF91510D113@lca.pw> <1CA39814-DE67-4112-8F97-D62B9F47FF9D@lca.pw> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1CA39814-DE67-4112-8F97-D62B9F47FF9D@lca.pw> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200102_100141_499797_02F78080 X-CRM114-Status: UNSURE ( 9.02 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: pmladek@suse.com, Sergey Senozhatsky , Arnd Bergmann , Peter Zijlstra , gregkh@linuxfoundation.org, Linux Kernel Mailing List , "Steven Rostedt \(VMware\)" , Linux-MM , Will Deacon , Thomas Gleixner , Catalin Marinas , longman@redhat.com, Andrew Morton , Linus Torvalds , dan.j.williams@intel.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Jan 02, 2020 at 10:42:51AM -0500, Qian Cai wrote: > > Not sure if Ted is still interested in maintaining this file as he had no feedback for more > than a month. The problem is that this will render the lockdep useless for a general > debugging tool as it will disable the lockdep early in the process. > > Could Andrew (since the free page shuffle will call get_random) or Linus pick this up > directly with the approval from one of the printk() maintainers above? Sorry, things have been busy with the Chistmas holidays and getting the ext4 tree ready for the merge window. I'll take a look at this in the next day or two. - Ted _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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 BE873C2D0C2 for ; Thu, 2 Jan 2020 18:01:25 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 5FA0620866 for ; Thu, 2 Jan 2020 18:01:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5FA0620866 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=mit.edu Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id A2FCB8E0005; Thu, 2 Jan 2020 13:01:24 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 9E1A28E0003; Thu, 2 Jan 2020 13:01:24 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 8F62A8E0005; Thu, 2 Jan 2020 13:01:24 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0223.hostedemail.com [216.40.44.223]) by kanga.kvack.org (Postfix) with ESMTP id 7C49D8E0003 for ; Thu, 2 Jan 2020 13:01:24 -0500 (EST) Received: from smtpin24.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with SMTP id 3241F4995E3 for ; Thu, 2 Jan 2020 18:01:24 +0000 (UTC) X-FDA: 76333461288.24.bomb48_c2ad921fe413 X-HE-Tag: bomb48_c2ad921fe413 X-Filterd-Recvd-Size: 2563 Received: from outgoing.mit.edu (outgoing-auth-1.mit.edu [18.9.28.11]) by imf24.hostedemail.com (Postfix) with ESMTP for ; Thu, 2 Jan 2020 18:01:23 +0000 (UTC) Received: from callcc.thunk.org (guestnat-104-133-0-111.corp.google.com [104.133.0.111] (may be forged)) (authenticated bits=0) (User authenticated as tytso@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id 002I0Y6w020811 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 2 Jan 2020 13:00:35 -0500 Received: by callcc.thunk.org (Postfix, from userid 15806) id 3EE664200AF; Thu, 2 Jan 2020 13:00:34 -0500 (EST) Date: Thu, 2 Jan 2020 13:00:34 -0500 From: "Theodore Y. Ts'o" To: Qian Cai Cc: Sergey Senozhatsky , Andrew Morton , Linus Torvalds , Arnd Bergmann , gregkh@linuxfoundation.org, pmladek@suse.com, "Steven Rostedt (VMware)" , Catalin Marinas , Will Deacon , dan.j.williams@intel.com, Peter Zijlstra , longman@redhat.com, Thomas Gleixner , Linux-MM , linux-arm-kernel@lists.infradead.org, Linux Kernel Mailing List Subject: Re: [PATCH] char/random: silence a lockdep splat with printk() Message-ID: <20200102180034.GA197330@mit.edu> References: <20191205010055.GO93017@google.com> <4F9E9335-334B-4600-8BC3-4AF91510D113@lca.pw> <1CA39814-DE67-4112-8F97-D62B9F47FF9D@lca.pw> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1CA39814-DE67-4112-8F97-D62B9F47FF9D@lca.pw> X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Jan 02, 2020 at 10:42:51AM -0500, Qian Cai wrote: > > Not sure if Ted is still interested in maintaining this file as he had no feedback for more > than a month. The problem is that this will render the lockdep useless for a general > debugging tool as it will disable the lockdep early in the process. > > Could Andrew (since the free page shuffle will call get_random) or Linus pick this up > directly with the approval from one of the printk() maintainers above? Sorry, things have been busy with the Chistmas holidays and getting the ext4 tree ready for the merge window. I'll take a look at this in the next day or two. - Ted