From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AH8x226aW/5LIzY5Z5zZaimFeCjq00QNRI8FmncrEVn4fgjahVjml64qafKCX9EB0R8Y/KpkULw8 ARC-Seal: i=1; a=rsa-sha256; t=1519225315; cv=none; d=google.com; s=arc-20160816; b=unzdLY3Y53j4qv5R8NYlZumvQAo9MRg+my7eARL3ZmpaUsaKts350C9EhWqYVoUNP2 z8/ta4Co+b83wYbmS+wMOI7i7DQGbcpXid0E7fiLXisIL7M6MIanduwPHaTS7KtaRTwA bQBZ9c2DnSF8UIQ7JF9kPEKIG7mBHu4ulTw7B47UohOjh+cr1c0EZHAOfdZsG0Og8sz5 nq9zPg1ySHGFebMsG9GdZK+sPEAA2X6WC9/bWaB+7uu7TpBKTf/CwF0HOxA6wEX539EJ YKZ/mrPgZUxQPcrUO6aVedSdmqQXCAh5m3VxACnQE5e2rQGk2HfLMF+eKqqfRhl827r3 FquQ== 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=jyCmF86AGjIIxne/19448LcTbObHqUgTNBv54LloPVE=; b=e8UF3d0Uj4Yy9GcDHiLkrpwHEW5XARc/ti6Gr66ws38gRfXmjnxJe7ZAjAh1uW2+nb uUCs1zjVS4N+c8JcnR1VSuZlhZnDk9MYRP6hOQLsyxkAONPTsnM3xVxw8PUJK5aFZ3nx n6GD1ZIfR2dK8laS5XsUTjPcPVlA3SkRkYXRuObgzexhaHzt712mQzuBzGhk89as6xMc FV0v4JYAJUboCo6KjqzdDWuykJ69TCbYz7+qUIlqhu2eXp0TYi9ji39AW8dVtI4ax9sf JfmlYVrmpPReAk5fYo4yzqAtcjucWovoS2pMEffun8FvuZBRpmNKbTqMvUwNK3nJZbHd k9Xg== 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 S937204AbeBUPBy (ORCPT ); Wed, 21 Feb 2018 10:01:54 -0500 Received: from mail.kernel.org ([198.145.29.99]:43572 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934828AbeBUPBx (ORCPT ); Wed, 21 Feb 2018 10:01:53 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3B51F2178E 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 v2 15/17] selftests: ftrace: Add a testcase for symbol type Date: Thu, 22 Feb 2018 00:01:29 +0900 Message-Id: <151922528927.6217.272823645130675841.stgit@devbox> X-Mailer: git-send-email 2.13.6 In-Reply-To: <151922484560.6217.1143686155616343906.stgit@devbox> References: <151922484560.6217.1143686155616343906.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?1593023203354951392?= X-GMAIL-MSGID: =?utf-8?q?1593023203354951392?= 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 --- .../ftrace/test.d/kprobe/kprobe_args_symbol.tc | 73 ++++++++++++++++++++ 1 file changed, 73 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..a5820b175df5 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_symbol.tc @@ -0,0 +1,73 @@ +#!/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= +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 +;; +aarch64) + GOODREG=%x0 + BADREG=%ax +;; +arm*) + GOODREG=%r0 + BADREG=%ax +;; +*) + 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 $stack0:symbol' > kprobe_events +echo 1 > events/kprobes/testprobe/enable +! echo test >> kprobe_events +tail -n 1 trace | grep -q "arg1=trace_run_command" + +echo 0 > events/enable +echo > kprobe_events