From patchwork Fri Aug 4 12:45:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zheng Yejian X-Patchwork-Id: 13341772 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 ED679C04E69 for ; Fri, 4 Aug 2023 12:46:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230105AbjHDMqb (ORCPT ); Fri, 4 Aug 2023 08:46:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41766 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229972AbjHDMqa (ORCPT ); Fri, 4 Aug 2023 08:46:30 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7C15F46A8; Fri, 4 Aug 2023 05:46:28 -0700 (PDT) Received: from dggpeml500012.china.huawei.com (unknown [172.30.72.56]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4RHQRP115HzrS74; Fri, 4 Aug 2023 20:45:21 +0800 (CST) Received: from localhost.localdomain (10.67.175.61) by dggpeml500012.china.huawei.com (7.185.36.15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Fri, 4 Aug 2023 20:46:26 +0800 From: Zheng Yejian To: , , , CC: , , Subject: [PATCH 2/2] selftests/ftrace: Add a basic testcase for snapshot Date: Fri, 4 Aug 2023 20:45:49 +0800 Message-ID: <20230804124549.2562977-3-zhengyejian1@huawei.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230804124549.2562977-1-zhengyejian1@huawei.com> References: <20230804124549.2562977-1-zhengyejian1@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.175.61] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To dggpeml500012.china.huawei.com (7.185.36.15) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-trace-kernel@vger.kernel.org This testcase is constrived to reproduce a problem that the cpu buffers become unavailable which is due to 'record_disabled' of array_buffer and max_buffer being messed up. Local test result after bugfix: # ./ftracetest test.d/00basic/snapshot1.tc === Ftrace unit tests === [1] Snapshot and tracing_cpumask [PASS] [2] (instance) Snapshot and tracing_cpumask [PASS] # of passed: 2 # of failed: 0 # of unresolved: 0 # of untested: 0 # of unsupported: 0 # of xfailed: 0 # of undefined(test bug): 0 Signed-off-by: Zheng Yejian --- .../ftrace/test.d/00basic/snapshot1.tc | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/00basic/snapshot1.tc diff --git a/tools/testing/selftests/ftrace/test.d/00basic/snapshot1.tc b/tools/testing/selftests/ftrace/test.d/00basic/snapshot1.tc new file mode 100644 index 000000000000..0d9b84b3adc3 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/00basic/snapshot1.tc @@ -0,0 +1,17 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Snapshot and tracing_cpumask +# requires: trace_marker tracing_cpumask snapshot +# flags: instance + +# This testcase is constrived to reproduce a problem that the cpu buffers +# become unavailable which is due to 'record_disabled' of array_buffer and +# max_buffer being messed up. + +ORIG_CPUMASK=`cat tracing_cpumask` +echo 0 > tracing_cpumask +echo 1 > snapshot +echo ${ORIG_CPUMASK} > tracing_cpumask +echo "test input 1" > trace_marker +grep -q "test input 1" trace +exit 0