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=-5.4 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, 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 6CD95C48BE6 for ; Wed, 16 Jun 2021 12:42:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4E6E161356 for ; Wed, 16 Jun 2021 12:42:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232685AbhFPMof (ORCPT ); Wed, 16 Jun 2021 08:44:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57226 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232452AbhFPMof (ORCPT ); Wed, 16 Jun 2021 08:44:35 -0400 Received: from mail-oi1-x233.google.com (mail-oi1-x233.google.com [IPv6:2607:f8b0:4864:20::233]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4EE2AC061574 for ; Wed, 16 Jun 2021 05:42:28 -0700 (PDT) Received: by mail-oi1-x233.google.com with SMTP id s23so2355434oiw.9 for ; Wed, 16 Jun 2021 05:42:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=Ov+6TdsxyPnAE/go4uKPTaq+xRfN+cq8OJH2b808SUw=; b=A4oVgkatl9TNacrtfcviixMIg2w3VwMxysVzP8wO7DgKtO8kcNFJX8iThUl71Pj5+Z 3FyfOa+NpST8Bbq830FAWTicGvNDSSQIr5FJ5RbNjguoMRDYSj1u9xIduzXox8fWtWdP wbUPt5mb/NTcEoRBIbgC0k/PGxqrE6BNWXKdRBJbHL6SE2HKKFUwvjzYZliCXNoUs4Ij xik+ZCmuKFLBVAztg2AW6jtV/q96CWj8FxZjOCnQsmJrfuTWPaT9f6eYe5//QCyK/AzC sSyJBWcuBh7uAzJaV7nUzMosYHwxK7Xb1AZU5i/LztwJbMVE7SLO5DrR3TnBdZ9MELNR wlUA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=Ov+6TdsxyPnAE/go4uKPTaq+xRfN+cq8OJH2b808SUw=; b=EETBcvuRsOVae1SpgACuwpt1eYGf9HU8M0BpitM+MTLexlruGm4k+UfUP5+X7uIb+Z h7UOlvuADFEeR5SORE/1QSldu9z7/zI/Yln3rxZckTIRAdbaW4CdAbXee9GQtKW2mT8T ySKo8TtzxpzfUJhph/Hkrl7LPJ0FgUL53yqKUrQmcb5pxSHvr+p5JSQHpm1BydQbGzpk 3l+xzXWd6PN7JRdxlZjMZCNSyorhGBlKLZg1TU/Pfp5h58oKYj+kgpZDuVZxgNi68mz0 KsVq3v4lVYAMGVM1lB/z/sR+avrR44eZsyimb2wULbt58uekdkuUlh+qIafXh11cV/CI aMxA== X-Gm-Message-State: AOAM531niDa53vVjaUfxZKyE4Bcgn516Mh6IgJog5JXexy59RrcjpDGm eHHT3igIS1pDcqYMFmf389FQPA== X-Google-Smtp-Source: ABdhPJwiM+LHbbFVezc5+6rmRihd65l8/VxGA9/ZTVL1axeq2pa1ZbpelZlJkgoFpT3TgG1fjW56gA== X-Received: by 2002:a05:6808:1482:: with SMTP id e2mr3455908oiw.150.1623847347463; Wed, 16 Jun 2021 05:42:27 -0700 (PDT) Received: from [192.168.1.134] ([198.8.77.61]) by smtp.gmail.com with ESMTPSA id e10sm501276otr.5.2021.06.16.05.42.26 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 16 Jun 2021 05:42:27 -0700 (PDT) Subject: Re: [PATCH v2 1/3] io_uring: Add to traces the req pointer when available To: Olivier Langlois , Pavel Begunkov , Steven Rostedt , Ingo Molnar , io-uring@vger.kernel.org, linux-kernel@vger.kernel.org References: <60be7e1b.1c69fb81.986e4.c6b5SMTPIN_ADDED_MISSING@mx.google.com> From: Jens Axboe Message-ID: <7e219aa8-a7b0-a15b-531b-f8926d6d7f3c@kernel.dk> Date: Wed, 16 Jun 2021 06:42:25 -0600 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: <60be7e1b.1c69fb81.986e4.c6b5SMTPIN_ADDED_MISSING@mx.google.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 5/31/21 12:36 AM, Olivier Langlois wrote: > The req pointer uniquely identify a specific request. > Having it in traces can provide valuable insights that is not possible > to have if the calling process is reusing the same user_data value. Applied 1-3, thanks. -- Jens Axboe