tools/testing/selftests/ftrace/test.d/kprobe/kretprobe_args.tc


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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: Kretprobe dynamic event with arguments
# requires: kprobe_events

# Add new kretprobe event
echo 'r:testprobe2 kernel_clone $retval' > 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 '<- kernel_clone'

echo 0 > events/kprobes/testprobe2/enable
echo '-:testprobe2' >> kprobe_events
clear_trace
test -d events/kprobes/testprobe2 && exit_fail || exit_pass