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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2023 Akanksha J N, IBM corporation
# description: Register/unregister optimized probe
# requires: kprobe_events
case `uname -m` in
x86_64)
;;
arm*)
;;
ppc*)
;;
*)
echo "Please implement other architecture here"
exit_unsupported
esac
DEFAULT=$(cat /proc/sys/debug/kprobes-optimization)
echo 1 > /proc/sys/debug/kprobes-optimization
for i in `seq 0 255`; do
echo "p:testprobe $FUNCTION_FORK+${i}" > kprobe_events || continue
echo 1 > events/kprobes/enable || continue
(echo "forked")
PROBE=$(grep $FUNCTION_FORK /sys/kernel/debug/kprobes/list)
echo 0 > events/kprobes/enable
echo > kprobe_events
if echo $PROBE | grep -q OPTIMIZED; then
echo "$DEFAULT" > /proc/sys/debug/kprobes-optimization
exit_pass
fi
done
echo "$DEFAULT" > /proc/sys/debug/kprobes-optimization
exit_unresolved
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