From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AH8x225nudlQMyNeEq4UV1R7zItok13fI0XyF9ccKVvzxaHtXXZXlOarm3dbEpchaSYZdY+2Vz1r ARC-Seal: i=1; a=rsa-sha256; t=1519788501; cv=none; d=google.com; s=arc-20160816; b=YAmayFNpIH8OgzThvs8xSk5VNhxtEOLZ08dkkYq/+ZotESxMaVlVZYb8BqSJUJPpmz jzu27KDwogqYJOoTECr3tZlUrn0K2aVl5PjDQFepwwMXXmH5QXkMm5AN18Gap/xjKPB0 MU3S2Mqdt/oSD4uW1U7zM/+Z/IPCL0tWgoCI80zrRp4Wv+roUBZrtFBsCLxzpSVwM4na 3ihS6Zz2noKWT7NdyTqrrN+HIsT/MTCyE+ZoM1psJ77+2aoQMCzt3CUWazwJLQKJXxzO Irp9t1F7f5JGrKJmXpU+ajXI8eEBsCvpX3cc7SHgzPmStfJ5KSUFRwtHSzendQyHSgr2 ki4Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :user-agent:references:in-reply-to:message-id:date:subject:cc:to :from:dmarc-filter:arc-authentication-results; bh=R/dyTmRnW8g5+R8eJUQju+kwfMcUMcRJrj3q5UyXUrg=; b=BIOltAo+XQN/WdwP7EsJ/ow56cNUT5pq4d1X3l0Jj96goocJeyVxW4BmCLeIsKuhfL wHmqk3P1me7nWVgGf0NwOekA0eMY/T9bgv+bN65+c12s6kBvElp8dIDDWpMF66fffMZI Kc4gHK4J0BTj4WN/NZ/vTgqen6zWA6O9exHRsVw2xQSELbQ/aqt/i2qeFJNgg3yseNve XWMc+RwfeMPdG71AJCI7lOz4fjtU2v9W3MdUNprenrklNPPK2RW5saZ7MBBFgIHXL1pT i48q2ZJyTSckSsIfaQuBsZxfGnHEnu2bEpaxXmcwyhDB12DXWxCaAlfycUncSH+/pUIL /mYA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kselftest-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kselftest-owner@vger.kernel.org Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kselftest-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kselftest-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751830AbeB1D2I (ORCPT ); Tue, 27 Feb 2018 22:28:08 -0500 Received: from mail.kernel.org ([198.145.29.99]:56874 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751682AbeB1D2G (ORCPT ); Tue, 27 Feb 2018 22:28:06 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6D95D21795 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=mhiramat@kernel.org From: Masami Hiramatsu To: Steven Rostedt , linux-kernel@vger.kernel.org Cc: mhiramat@kernel.org, Ingo Molnar , Namhyung Kim , Tom Zanussi , Arnaldo Carvalho de Melo , linux-trace-users@vger.kernel.org, linux-kselftest@vger.kernel.org, shuah@kernel.org Subject: [PATCH v4 17/19] selftests: ftrace: Add a testcase for symbol type Date: Wed, 28 Feb 2018 12:27:42 +0900 Message-Id: <151978846246.2577.9340621494520438694.stgit@devbox> X-Mailer: git-send-email 2.13.6 In-Reply-To: <151978796240.2577.6531711990653677529.stgit@devbox> References: <151978796240.2577.6531711990653677529.stgit@devbox> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kselftest-owner@vger.kernel.org X-Mailing-List: linux-kselftest@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1593613747357134068?= X-GMAIL-MSGID: =?utf-8?q?1593613747357134068?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Add a testcase for symbol type with kprobe event. This tests good/bad syntax combinations and also the traced data. If the kernel doesn't support symbol type, it skips the test as UNSUPPORTED. Signed-off-by: Masami Hiramatsu --- Changes in v3: - Use IP/PC register to test the symbol type --- .../ftrace/test.d/kprobe/kprobe_args_symbol.tc | 77 ++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_symbol.tc diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_symbol.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_symbol.tc new file mode 100644 index 000000000000..20a8664a838b --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_symbol.tc @@ -0,0 +1,77 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Kprobe event argument symbol type + +[ -f kprobe_events ] || exit_unsupported # this is configurable + +grep -qe "type:.* symbol" README || exit_unsupported # version issue + +echo 0 > events/enable +echo > kprobe_events + +PROBEFUNC="vfs_read" +GOODREG= +BADREG= +REG= +GOODSYM="_sdata" +if ! grep -qw ${GOODSYM} /proc/kallsyms ; then + GOODSYM=$PROBEFUNC +fi + +case `uname -m` in +x86_64|i[3456]86) + GOODREG=%ax + BADREG=%ex + REG=%ip +;; +aarch64) + GOODREG=%x0 + BADREG=%ax + REG=%pc +;; +arm*) + GOODREG=%r0 + BADREG=%ax + REG=%pc +;; +*) + echo "Please implement other architecture here" + exit_untested +esac + +test_goodarg() # Good-args +{ + while [ "$1" ]; do + echo "p ${PROBEFUNC} $1" > kprobe_events + shift 1 + done; +} + +test_badarg() # Bad-args +{ + while [ "$1" ]; do + ! echo "p ${PROBEFUNC} $1" > kprobe_events + shift 1 + done; +} + +echo > kprobe_events + +: "Symbol type" +test_goodarg "${GOODREG}:symbol" "@${GOODSYM}:symbol" "@${GOODSYM}+10:symbol" \ + "\$stack0:symbol" "+0(\$stack):symbol" +test_badarg "\$comm:symbol" + +: "Retval with symbol type" +echo "r ${PROBEFUNC} \$retval:symbol" > kprobe_events + +echo > kprobe_events + +: "Test get symbol" +echo "p:testprobe create_trace_kprobe ${REG}:symbol" > kprobe_events +echo 1 > events/kprobes/testprobe/enable +! echo test >> kprobe_events +tail -n 1 trace | grep -q "arg1=create_trace_kprobe" + +echo 0 > events/enable +echo > kprobe_events