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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1EF5AC433FE for ; Wed, 15 Dec 2021 19:34:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231839AbhLOTej (ORCPT ); Wed, 15 Dec 2021 14:34:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37884 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231397AbhLOTei (ORCPT ); Wed, 15 Dec 2021 14:34:38 -0500 Received: from mail-il1-x129.google.com (mail-il1-x129.google.com [IPv6:2607:f8b0:4864:20::129]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 91DC5C061574 for ; Wed, 15 Dec 2021 11:34:38 -0800 (PST) Received: by mail-il1-x129.google.com with SMTP id w1so20199285ilh.9 for ; Wed, 15 Dec 2021 11:34:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=YYuJKqVn7Dufbjabi8CjodjpBv4ACD8m6+dlUH/6df8=; b=IgEyIy/9MvGru6oGIjcd47E6pH+tmCMPgWAu5g5fJRDmGYzHMaSl/xq1X68lOzMJEb Ogmz9ta4k4LQuh+tlxxy1S/QiPpgo/7uf1Seo/KHZXT6lAO+EnxwLHzeqMWQeU1L/rVb p7W+lls6HNy6IiRWI+nEEwsaSaFkgvkQ2u1seErcsWL2FNQK9glG/LVupOaRkcu/3nqd THCNHiGUaf6ozXEha6yYDgfsgVvJMd1DkxfD1kvlfmPkTtQsDDIJmU2DkYdLLF6b01nv 51wSJdDY2JShyRmeLVmCkYHn3w50x7ip672QQlxsr4fe0WeeK/iu+KKRIDFiTZBXwmPa fCBA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=YYuJKqVn7Dufbjabi8CjodjpBv4ACD8m6+dlUH/6df8=; b=2DbzCqL1eL4LmiPtZLg7nnV6ay2epxYE8087ihnNvPriSast2ZTWtUBCWs8E1zF/cv Mx14hZj4Tk9mmLc6gyMKZEiS7im+glFHTIO/fPUT5LAreW/03ufFHqFmt2a8xEB0n9nw 8UeFXaqFCq6GaXM32CImBKyO/dFhLrqPtsNF1RXkx1HNd/YZPcIHyIz7YFKNiX9YPxxg er1GITtNFCheRnU4ZrzsRvkHzXxd+WSXBiM9OWb2vLyvdMgnVXT0FEN70LI2obLeBFqy atYWJE8/3ylfR9KbTNJa0LTNYWHHURdce9jucY4qVp9c0wGXsZLXhXlQGdkuIcJw1Xeg Lf0A== X-Gm-Message-State: AOAM531tnGnKIpSouPF59OKfypgQesDJWYZ47cLdqopdm8JzZQJXoF1u LPoNJt6BQvD+xXlkuroIDzv/pw== X-Google-Smtp-Source: ABdhPJyCwB+0QpTfDuFl0wmjchcOgWrh4jG6Rn07fk+46K379Kte18I++eGxTuUOw/EgEfDTAhCcmA== X-Received: by 2002:a05:6e02:b4a:: with SMTP id f10mr7275230ilu.281.1639596877741; Wed, 15 Dec 2021 11:34:37 -0800 (PST) Received: from [192.168.1.30] ([207.135.234.126]) by smtp.gmail.com with ESMTPSA id q132sm1462857iod.18.2021.12.15.11.34.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 15 Dec 2021 11:34:37 -0800 (PST) Subject: Re: [PATCH v2 2/2] blktrace: switch trace spinlock to a raw spinlock To: Steven Rostedt , Sebastian Andrzej Siewior Cc: Wander Lairson Costa , linux-kernel@vger.kernel.org, Thomas Gleixner , linux-rt-users@vger.kernel.org References: <20211213123737.9147-1-wander@redhat.com> <20211213123737.9147-3-wander@redhat.com> <20211215123116.622da7ef@gandalf.local.home> From: Jens Axboe Message-ID: <2f3300ba-0879-ad7d-8d44-bb8d8b17d7e2@kernel.dk> Date: Wed, 15 Dec 2021 12:34:36 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20211215123116.622da7ef@gandalf.local.home> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/15/21 10:31 AM, Steven Rostedt wrote: > On Wed, 15 Dec 2021 18:08:34 +0100 > Sebastian Andrzej Siewior wrote: > >> On 2021-12-13 09:37:37 [-0300], Wander Lairson Costa wrote: >> … >>> To avoid this bug, we switch the trace lock to a raw spinlock. >> >> Steven, do you think this is a good idea? >> > > blktrace is actually maintained by Jens. Looks like there are two patches, and none were CC'ed linux-block. Please resend. -- Jens Axboe