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selftests/ftrace: Improve kretprobe testcase to check log data

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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@kernel.org>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
This commit is contained in:
Masami Hiramatsu 2018-08-30 23:18:35 +09:00 committed by Shuah Khan (Samsung OSG)
parent e42e5c46b0
commit 1e51263ef4
1 changed files with 6 additions and 1 deletions
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7
tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc
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@ -4,11 +4,16 @@
[ -f kprobe_events ] || exit_unsupported # this is configurable [ -f kprobe_events ] || exit_unsupported # this is configurable
# Add new kretprobe event
echo 'r:testprobe2 _do_fork $retval' > kprobe_events 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 test -d events/kprobes/testprobe2
echo 1 > events/kprobes/testprobe2/enable echo 1 > events/kprobes/testprobe2/enable
( echo "forked") ( echo "forked")
cat trace | grep testprobe2 | grep -q '<- _do_fork'
echo 0 > events/kprobes/testprobe2/enable echo 0 > events/kprobes/testprobe2/enable
echo '-:testprobe2' >> kprobe_events echo '-:testprobe2' >> kprobe_events
clear_trace clear_trace