From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AH8x225JxT5fj4XSfnK5NRZgRQLf/dvlk9EAmmkmMip5Qn+4j5S0m2ZxBtO8t3jnzQ8HSv+bCFXr ARC-Seal: i=1; a=rsa-sha256; t=1519450595; cv=none; d=google.com; s=arc-20160816; b=Hyoa5KS0M7lBUX1tNvy+TPxa3wkXOs79ka7Q5oY1rmECz+yyib+7LgC3+2i9pmwj29 0yOSazvWBSH6l1GWsd1vSz1/2HNpl3B7h3o2tGjsNCSfoP1HN23y+BOiAIAjHpMMfXNm ARvh4PhnY8BYuS4O4OJ2Em4Gx8q3eAKqwpzqFJ+CQSYvszLs61aWSX9l5S7/XwH8lDiC qLpxqyHKdHfHCSR23tlZdBcmvWau9AoRlvnxxzV3hI0vIn6KkisEYEXVDviu2hr5EGhI ZLUyF2ZGPwTvKAFDh7sqf3g/9b0H0GXG5LO4Q8kjjRCgFsvbUzXJeV9A+2HQaYgKpkdI IfaQ== 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=xrKQy7YhHNRjMDPGG6lp5KINl2sf/O8wld4EiSdkuZhGwrNgw5HSV9rCdhZY5/zbI8 xbZXwrbKLnT1xCPb4Wyc1ampYxhRjYtdzPvC1694gjVHv9isCYD7HEOAmKBjYp5Uy7x7 6kw3VX6DsiEAKfuV/XkjNx1bmpOwqxksIlcg2TsKrXZAFvwVpXwhPWQPSBJ6eTr+ag6i GSrdVT6MLeC+hU5FH5oX32dJOIO9mf9rPDsctISefRnM41sTnIuAZxg+EucYrWSxIb6d rzeod3jeZcr+//KHK2FrCDSRVcMHQD6pIufT98FzEDPllAD9uFy8cVFTwkjmNrW/hCb9 Jv+g== 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 S1751699AbeBXFge (ORCPT ); Sat, 24 Feb 2018 00:36:34 -0500 Received: from mail.kernel.org ([198.145.29.99]:45590 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751676AbeBXFgd (ORCPT ); Sat, 24 Feb 2018 00:36:33 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 749CE21785 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 v3 16/18] selftests: ftrace: Add a testcase for symbol type Date: Sat, 24 Feb 2018 14:36:09 +0900 Message-Id: <151945056932.27508.12649549123602913039.stgit@devbox> X-Mailer: git-send-email 2.13.6 In-Reply-To: <151945010287.27508.6226184958678620828.stgit@devbox> References: <151945010287.27508.6226184958678620828.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?1593259427146841213?= X-GMAIL-MSGID: =?utf-8?q?1593259427146841213?= 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