[PATCH v3 13/28] selftests/ftrace: Improve kretprobe testcase to check log data

From: Masami Hiramatsu
Date: Thu Aug 30 2018 - 10:19:00 EST


Improve kretprobe testcase to check the log data correctness
and ensure the event definition is corrctly including
argument definition.

Signed-off-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
---
.../ftrace/test.d/kprobe/kretprobe_args.tc | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc
index 4c6b21e30b02..ac9ab4a12e53 100644
--- a/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc
+++ b/tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc
@@ -4,11 +4,16 @@

[ -f kprobe_events ] || exit_unsupported # this is configurable

+# Add new kretprobe event
echo 'r:testprobe2 _do_fork $retval' > kprobe_events
-grep testprobe2 kprobe_events
+grep testprobe2 kprobe_events | grep -q 'arg1=\$retval'
test -d events/kprobes/testprobe2
+
echo 1 > events/kprobes/testprobe2/enable
( echo "forked")
+
+cat trace | grep testprobe2 | grep -q '<- _do_fork'
+
echo 0 > events/kprobes/testprobe2/enable
echo '-:testprobe2' >> kprobe_events
clear_trace