82 lines
1.5 KiB
Bash
82 lines
1.5 KiB
Bash
|
#!/bin/bash
|
||
|
|
# SPDX-License-Identifier: GPL-2.0-or-later OR copyleft-next-0.3.1
|
||
|
|
# Copyright (C) 2023 Luis Chamberlain <mcgrof@kernel.org>
|
||
|
|
#
|
||
|
|
# This is a stress test script for kallsyms through find_symbol()
|
||
|
|
|
||
|
|
set -e
|
||
|
|
|
||
|
|
# Kselftest framework requirement - SKIP code is 4.
|
||
|
|
ksft_skip=4
|
||
|
|
|
||
|
|
test_reqs()
|
||
|
|
{
|
||
|
|
if ! which modprobe 2> /dev/null > /dev/null; then
|
||
|
|
echo "$0: You need modprobe installed" >&2
|
||
|
|
exit $ksft_skip
|
||
|
|
fi
|
||
|
|
|
||
|
|
if ! which kmod 2> /dev/null > /dev/null; then
|
||
|
|
echo "$0: You need kmod installed" >&2
|
||
|
|
exit $ksft_skip
|
||
|
|
fi
|
||
|
|
|
||
|
|
if ! which perf 2> /dev/null > /dev/null; then
|
||
|
|
echo "$0: You need perf installed" >&2
|
||
|
|
exit $ksft_skip
|
||
|
|
fi
|
||
|
|
|
||
|
|
uid=$(id -u)
|
||
|
|
if [ $uid -ne 0 ]; then
|
||
|
|
echo $msg must be run as root >&2
|
||
|
|
exit $ksft_skip
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
load_mod()
|
||
|
|
{
|
||
|
|
local STATS="-e duration_time"
|
||
|
|
STATS="$STATS -e user_time"
|
||
|
|
STATS="$STATS -e system_time"
|
||
|
|
STATS="$STATS -e page-faults"
|
||
|
|
local MOD=$1
|
||
|
|
|
||
|
|
local ARCH="$(uname -m)"
|
||
|
|
case "${ARCH}" in
|
||
|
|
x86_64)
|
||
|
|
perf stat $STATS $MODPROBE $MOD
|
||
|
|
;;
|
||
|
|
*)
|
||
|
|
time $MODPROBE $MOD
|
||
|
|
exit 1
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
}
|
||
|
|
|
||
|
|
remove_all()
|
||
|
|
{
|
||
|
|
$MODPROBE -r test_kallsyms_b
|
||
|
|
for i in a b c d; do
|
||
|
|
$MODPROBE -r test_kallsyms_$i
|
||
|
|
done
|
||
|
|
}
|
||
|
|
test_reqs
|
||
|
|
|
||
|
|
MODPROBE=$(</proc/sys/kernel/modprobe)
|
||
|
|
|
||
|
|
remove_all
|
||
|
|
load_mod test_kallsyms_b
|
||
|
|
remove_all
|
||
|
|
|
||
|
|
# Now pollute the namespace
|
||
|
|
$MODPROBE test_kallsyms_c
|
||
|
|
load_mod test_kallsyms_b
|
||
|
|
|
||
|
|
# Now pollute the namespace with twice the number of symbols than the last time
|
||
|
|
remove_all
|
||
|
|
$MODPROBE test_kallsyms_c
|
||
|
|
$MODPROBE test_kallsyms_d
|
||
|
|
load_mod test_kallsyms_b
|
||
|
|
|
||
|
|
exit 0
|