From patchwork Thu Aug 30 14:22:21 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: 10581795 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 D22A114E1 for ; Thu, 30 Aug 2018 14:22:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C119A2BF61 for ; Thu, 30 Aug 2018 14:22:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B53592BF90; Thu, 30 Aug 2018 14:22:45 +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 560DD2BF61 for ; Thu, 30 Aug 2018 14:22:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729072AbeH3SZH (ORCPT ); Thu, 30 Aug 2018 14:25:07 -0400 Received: from mail.kernel.org ([198.145.29.99]:44290 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728980AbeH3SZH (ORCPT ); Thu, 30 Aug 2018 14:25:07 -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 5C3C8205C9; Thu, 30 Aug 2018 14:22:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1535638964; bh=ZDhIA09tWcOlqN0rNgg50H7v3c95gH1exAR2kP9TYxY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rI+YjjsTFca4C1XOYCsFpuyKFh+mckGgk228NICNsBDrgXpzttCADWd20biDtAdiX ee5FLyV8WdaK0BMYuG42EbiCgS7RRZ8Y7oK89lLCXcmpZtns76Hb2Z0uDAy1q86gZ2 nWHoitlpEN7HPINLMTsZgEVXaKHqwa62ajILQ3L4= 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 21/28] selftests/ftrace: Add function profiling stat testcase Date: Thu, 30 Aug 2018 23:22:21 +0900 Message-Id: <153563894147.29700.6575031484306159534.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 function profiling per-cpu statistics interface. There is already func_profile.tc, but that is mainly focusing on the combination of function-profiler and function tracer. This testcase ensures trace_stat per-cpu function statistics is correctly updated. Signed-off-by: Masami Hiramatsu Acked-by: Steven Rostedt (VMware) --- Changes in v3: - Remove the last empty line. --- .../ftrace/test.d/ftrace/func_profile_stat.tc | 22 ++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/ftrace/func_profile_stat.tc diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_profile_stat.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_profile_stat.tc new file mode 100644 index 000000000000..0d501058aa75 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_profile_stat.tc @@ -0,0 +1,22 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: ftrace - function profiling + +[ ! -f function_profile_enabled ] && exit_unsupported + +: "Enable function profile" +echo 1 > function_profile_enabled + +: "Profile must be updated" +cp trace_stat/function0 $TMPDIR/ +( echo "forked"; sleep 1 ) +: "diff returns 0 if there is no difference" +! diff trace_stat/function0 $TMPDIR/function0 + +echo 0 > function_profile_enabled + +: "Profile must NOT be updated" +cp trace_stat/function0 $TMPDIR/ +( echo "forked"; sleep 1 ) +: "diff returns 0 if there is no difference" +diff trace_stat/function0 $TMPDIR/function0