#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: Register/unregister many kprobe events

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

# ftrace fentry skip size depends on the machine architecture.
# Currently HAVE_KPROBES_ON_FTRACE defined on x86 and powerpc64le
case `uname -m` in
  x86_64|i[3456]86) OFFS=5;;
  ppc64le) OFFS=8;;
  *) OFFS=0;;
esac

echo "Setup up to 256 kprobes"
grep t /proc/kallsyms | cut -f3 -d" " | grep -v .*\\..* | \
head -n 256 | while read i; do echo p ${i}+${OFFS} ; done > kprobe_events ||:

echo 1 > events/kprobes/enable
echo 0 > events/kprobes/enable
echo > kprobe_events
echo "Waiting for unoptimizing & freeing"
sleep 5
echo "Done"