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Message-Id: <20220819032706.695212-4-xiehuan09@gmail.com>
Date: Fri, 19 Aug 2022 11:27:05 +0800
From: Jeff Xie <xiehuan09@...il.com>
To: rostedt@...dmis.org
Cc: mingo@...hat.com, mhiramat@...nel.org, zanussi@...nel.org,
linux-kernel@...r.kernel.org, chensong_2000@....cn,
Jeff Xie <xiehuan09@...il.com>, Shuah Khan <shuah@...nel.org>,
linux-kselftest@...r.kernel.org,
Shuah Khan <skhan@...uxfoundation.org>
Subject: [PATCH v15 3/4] selftests/ftrace: Add testcases for objtrace
Add a series of testcases to illustrate correct and incorrect usage of
objtrace trigger.
Cc: Shuah Khan <shuah@...nel.org>
Cc: linux-kselftest@...r.kernel.org
Signed-off-by: Jeff Xie <xiehuan09@...il.com>
Tested-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>
Acked-by: Shuah Khan <skhan@...uxfoundation.org>
---
.../ftrace/test.d/trigger/trigger-objtrace.tc | 41 +++++++++++++++++++
1 file changed, 41 insertions(+)
create mode 100644 tools/testing/selftests/ftrace/test.d/trigger/trigger-objtrace.tc
diff --git a/tools/testing/selftests/ftrace/test.d/trigger/trigger-objtrace.tc b/tools/testing/selftests/ftrace/test.d/trigger/trigger-objtrace.tc
new file mode 100644
index 000000000000..d894442b6a30
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/trigger/trigger-objtrace.tc
@@ -0,0 +1,41 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# description: event trigger - test objtrace-trigger
+# requires: kprobe_events "objtrace":README
+
+fail() { #msg
+ echo $1
+ exit_fail
+}
+
+echo 'p bio_add_page arg1=$arg1 arg2=$arg2' > kprobe_events
+
+FEATURE=`grep objtrace events/kprobes/p_bio_add_page_0/trigger`
+if [ -z "$FEATURE" ]; then
+ echo "objtrace trigger is not supported"
+ exit_unsupported
+fi
+
+echo "Test objtrace trigger"
+echo 'objtrace:add:arg1,0x28:u32:1 if comm == "cat"' > \
+ events/kprobes/p_bio_add_page_0/trigger
+if [ -z $? ]; then
+ fail "objtrace trigger syntax error"
+fi
+
+echo "Test objtrace semantic errors"
+
+# Being lack of objtrace command
+! echo 'objtrace:arg1,0x28:u32:1' > events/kprobes/p_bio_add_page_0/trigger
+# Bad parameter name
+! echo 'objtrace:add:argx:u32:1' > events/kprobes/p_bio_add_page_0/trigger
+# The parameter existed on event
+! echo 'objtrace:add:arg2:u32:1' > events/kprobes/p_bio_add_page_0/trigger
+
+echo "reset objtrace trigger"
+
+echo '!objtrace:add:arg1,0x28:u32' > \
+ events/kprobes/p_bio_add_page_0/trigger
+echo '-:p_bio_add_page_0' >> ./kprobe_events
+
+exit 0
--
2.25.1
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