From patchwork Sun Aug 13 03:37:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joel Fernandes X-Patchwork-Id: 13351985 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 37626C04A6A for ; Sun, 13 Aug 2023 03:37:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229704AbjHMDho (ORCPT ); Sat, 12 Aug 2023 23:37:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53952 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229484AbjHMDhn (ORCPT ); Sat, 12 Aug 2023 23:37:43 -0400 Received: from mail-io1-xd30.google.com (mail-io1-xd30.google.com [IPv6:2607:f8b0:4864:20::d30]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 03B8510FD for ; Sat, 12 Aug 2023 20:37:45 -0700 (PDT) Received: by mail-io1-xd30.google.com with SMTP id ca18e2360f4ac-79093c0c68bso127336939f.0 for ; Sat, 12 Aug 2023 20:37:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=joelfernandes.org; s=google; t=1691897865; x=1692502665; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=FtcqjFzhwuRZbHBWxqdoLTlD9EjBr/XxEKJhU3JgK1M=; b=TbwS2mSknEe09vKa3AsnGeLaGAIA3D0J/Su6rlHkPPn6kUlgotZk7wMKaHc9FybSRR t46YYPbXz1BfNTP1xKLoxCgoeKwHGPeM8d5QZzHifyFIN4qzS8ciApeJRXmwfA3oexTz TWt7B7S7RtpmxO45lIRzZSIBxucqpfdw0zeD0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691897865; x=1692502665; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=FtcqjFzhwuRZbHBWxqdoLTlD9EjBr/XxEKJhU3JgK1M=; b=JHHKCLedzHNLLmkPbwy3N4bKX2g8Px1SNoyBqFWqZa76BcDxAwIPT0AKJStuq3V7i7 jT6Lld6ogtpucyeRWwoHgt0dlUUrIjIMLIsbhe5hMixVYrlXREHUlNL44IN3vvEJUZZw hQKKki5PrZM3Kg94MAziBS+QJ1Sndl1jpp/JEvouAY4Ks+7/HxJCXjg8GXoLcr/zKj8b OqPz+JWlsOp7lYeooES900T++zh4F1KHtNgVsXhrZUBERoxUvuHaEliQvq1JLfxlxLnE vwwaGZuSSqJHjIlOXAPAVcM0LTHxw2rSL4b8OMR5R5GQuUKF3wxCzJgtjLG5kVHEkOJt rN/g== X-Gm-Message-State: AOJu0YzslO4EKcsDxvQcH98nPHkBFMq6Q0oWhf/PJ/QEsQ74ovlvo4d8 CRDW4UQ8LvFZ8OccMZmEfs3fzw== X-Google-Smtp-Source: AGHT+IH2gu3Bucb4GNzQK6gTtVqojpQAgMq26mLfou+abJe1boc/851+SvyYyMbTU+0lzyeVGlVzrg== X-Received: by 2002:a05:6e02:1bee:b0:349:2d1d:e463 with SMTP id y14-20020a056e021bee00b003492d1de463mr10131258ilv.13.1691897865244; Sat, 12 Aug 2023 20:37:45 -0700 (PDT) Received: from joelboxx5.c.googlers.com.com (156.190.123.34.bc.googleusercontent.com. [34.123.190.156]) by smtp.gmail.com with ESMTPSA id y8-20020a92c988000000b0034a92425cbcsm489635iln.84.2023.08.12.20.37.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 12 Aug 2023 20:37:44 -0700 (PDT) From: "Joel Fernandes (Google)" To: linux-kernel@vger.kernel.org, "Paul E. McKenney" , Josh Triplett , Steven Rostedt , Mathieu Desnoyers , Lai Jiangshan , Shuah Khan Cc: Joel , Joel Fernandes , rcu@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH] rcutorture: Copy out ftrace into its own console file Date: Sun, 13 Aug 2023 03:37:36 +0000 Message-ID: <20230813033737.3731290-1-joel@joelfernandes.org> X-Mailer: git-send-email 2.41.0.640.ga95def55d0-goog MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org From: Joel Often times it is difficult to jump to the ftrace buffers and treat it independently during debugging. Copy the contents of the buffers into its own file. Signed-off-by: Joel Fernandes (Google) --- .../selftests/rcutorture/bin/functions.sh | 24 +++++++++++++++++++ .../selftests/rcutorture/bin/parse-console.sh | 7 ++++++ 2 files changed, 31 insertions(+) mode change 100644 => 100755 tools/testing/selftests/rcutorture/bin/functions.sh diff --git a/tools/testing/selftests/rcutorture/bin/functions.sh b/tools/testing/selftests/rcutorture/bin/functions.sh old mode 100644 new mode 100755 index b8e2ea23cb3f..2ec4ab87a7f0 --- a/tools/testing/selftests/rcutorture/bin/functions.sh +++ b/tools/testing/selftests/rcutorture/bin/functions.sh @@ -331,3 +331,27 @@ specify_qemu_net () { echo $1 -net none fi } + +# Extract the ftrace output from the console log output +# The ftrace output looks in the logs looks like: +# Dumping ftrace buffer: +# --------------------------------- +# [...] +# --------------------------------- +extract_ftrace_from_console() { + awk ' + /Dumping ftrace buffer:/ { + capture = 1 + next + } + /---------------------------------/ { + if(capture == 1) { + capture = 2 + next + } else if(capture == 2) { + capture = 0 + } + } + capture == 2 + ' "$1"; +} diff --git a/tools/testing/selftests/rcutorture/bin/parse-console.sh b/tools/testing/selftests/rcutorture/bin/parse-console.sh index 9ab0f6bc172c..e3d2f69ec0fb 100755 --- a/tools/testing/selftests/rcutorture/bin/parse-console.sh +++ b/tools/testing/selftests/rcutorture/bin/parse-console.sh @@ -182,3 +182,10 @@ if ! test -s $file.diags then rm -f $file.diags fi + +# Call extract_ftrace_from_console function, if the output is empty, +# don't create $file.ftrace. Otherwise output the results to $file.ftrace +extract_ftrace_from_console $file > $file.ftrace +if [ ! -s $file.ftrace ]; then + rm -f $file.ftrace +fi