From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752523AbdGGS6L (ORCPT ); Fri, 7 Jul 2017 14:58:11 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:46201 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752441AbdGGS6J (ORCPT ); Fri, 7 Jul 2017 14:58:09 -0400 From: "Naveen N. Rao" To: Steven Rostedt Cc: Masami Hiramatsu , Ananth N Mavinakayanahalli , Michael Ellerman , Shuah Khan , linux-kernel@vger.kernel.org Subject: [PATCH v3 4/4] selftests/ftrace: Add a testcase for kprobe event naming Date: Sat, 8 Jul 2017 00:27:33 +0530 X-Mailer: git-send-email 2.13.2 In-Reply-To: References: In-Reply-To: References: X-TM-AS-MML: disable x-cbid: 17070718-1617-0000-0000-000001F39E50 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17070718-1618-0000-0000-0000483B1335 Message-Id: <61ae96fd1fcd14ee652c8b6525c218b8661bb0d2.1499453040.git.naveen.n.rao@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-07-07_09:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1703280000 definitions=main-1707070313 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Masami Hiramatsu Add a testcase for kprobe event naming. This testcase checks whether the kprobe events can automatically ganerate its event name on normal function and dot-suffixed function. Also it checks whether the kprobe events can correctly define new event with given event name and group name. Signed-off-by: Masami Hiramatsu [Updated tests to use vfs_read and symbols with '.isra.', added check for kprobe_events and a command to clear it on exit, various additional checks and tests] Signed-off-by: Naveen N. Rao --- .../ftrace/test.d/kprobe/kprobe_eventname.tc | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc new file mode 100644 index 000000000000..b9302cc82c12 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_eventname.tc @@ -0,0 +1,36 @@ +#!/bin/sh +# description: Kprobe event auto/manual naming + +[ -f kprobe_events ] || exit_unsupported # this is configurable + +disable_events +echo > kprobe_events + +:;: "Add an event on function without name" ;: + +FUNC=`grep " [tT] .*vfs_read$" /proc/kallsyms | tail -n 1 | cut -f 3 -d " "` +[ "x" != "x$FUNC" ] || exit_unresolved +echo "p $FUNC" > kprobe_events +PROBE_NAME=`echo $FUNC | tr ".:" "_"` +test -d events/kprobes/p_${PROBE_NAME}_0 || exit_failure + +:;: "Add an event on function with new name" ;: + +echo "p:event1 $FUNC" > kprobe_events +test -d events/kprobes/event1 || exit_failure + +:;: "Add an event on function with new name and group" ;: + +echo "p:kprobes2/event2 $FUNC" > kprobe_events +test -d events/kprobes2/event2 || exit_failure + +:;: "Add an event on dot function without name" ;: + +FUNC=`grep -m 10 " [tT] .*\.isra\..*$" /proc/kallsyms | tail -n 1 | cut -f 3 -d " "` +[ "x" != "x$FUNC" ] || exit_unresolved +echo "p $FUNC" > kprobe_events +EVENT=`grep $FUNC kprobe_events | cut -f 1 -d " " | cut -f 2 -d:` +[ "x" != "x$EVENT" ] || exit_failure +test -d events/$EVENT || exit_failure + +echo > kprobe_events -- 2.13.2