From patchwork Thu Aug 30 14:25:39 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Masami Hiramatsu (Google)" X-Patchwork-Id: 10581821 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D06DD174A for ; Thu, 30 Aug 2018 14:26:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 743EA2BF90 for ; Thu, 30 Aug 2018 14:26:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 684322BFA1; Thu, 30 Aug 2018 14:26:03 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0DE9C2BF90 for ; Thu, 30 Aug 2018 14:26:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729098AbeH3S20 (ORCPT ); Thu, 30 Aug 2018 14:28:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:45324 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729084AbeH3S20 (ORCPT ); Thu, 30 Aug 2018 14:28:26 -0400 Received: from localhost.localdomain (NE2965lan1.rev.em-net.ne.jp [210.141.244.193]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id CCA3A205C9; Thu, 30 Aug 2018 14:26:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1535639161; bh=jkymEHeINqmqgzid9I7H3Mh74/vPTp4SdM1CedNkG28=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=g33yG2/C8nWSkxLloUFEmrbu3VGJeYQh+V3QwFVzyJujGLk9turLAL8BxCbWKuWKO /29zdtqVEfTkgpim/iU8yv3eiPnBn+PvrYDFLsucIGJI+eo72jaHMvmj4K9AO5t0zK 3iSZ1IAHypDyri16B6pfSUpSmS+pchlLKxCe/aP4= From: Masami Hiramatsu To: Shuah Khan , Steven Rostedt Cc: Ingo Molnar , Masami Hiramatsu , linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 28/28] selftests/ftrace: Add ftrace cpumask testcase Date: Thu, 30 Aug 2018 23:25:39 +0900 Message-Id: <153563913896.29700.6147067496062109284.stgit@devbox> X-Mailer: git-send-email 2.13.6 In-Reply-To: <153563834333.29700.11242968505215651399.stgit@devbox> References: <153563834333.29700.11242968505215651399.stgit@devbox> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add a testcase for tracing_cpumask with function tracer. Signed-off-by: Masami Hiramatsu --- Changes in v3: - Use nproc instead of /proc/cpuinfo - If nproc doesn't exist, use /sys/devices/cpu/cpu*. - Save and restore the original cpumask --- .../selftests/ftrace/test.d/ftrace/func_cpumask.tc | 42 ++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/ftrace/func_cpumask.tc diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_cpumask.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_cpumask.tc new file mode 100644 index 000000000000..0e6810743576 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_cpumask.tc @@ -0,0 +1,42 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL2.0 +# description: ftrace - function trace with cpumask + +if ! which nproc ; then + nproc() { + ls -d /sys/devices/system/cpu/cpu[0-9]* | wc -l + } +fi + +NP=`nproc` + +if [ $NP -eq 1 ] ;then + echo "We can not test cpumask on UP environment" + exit_unresolved +fi + +ORIG_CPUMASK=`cat tracing_cpumask` + +do_reset() { + echo $ORIG_CPUMASK > tracing_cpumask +} + +echo 0 > tracing_on +echo > trace +: "Bitmask only record on CPU1" +echo 2 > tracing_cpumask +MASK=0x`cat tracing_cpumask` +test `printf "%d" $MASK` -eq 2 || do_reset + +echo function > current_tracer +echo 1 > tracing_on +(echo "forked") +echo 0 > tracing_on + +: "Check CPU1 events are recorded" +grep -q -e "\[001\]" trace || do_reset + +: "There should be No other cpu events" +! grep -qv -e "\[001\]" -e "^#" trace || do_reset + +do_reset