#!/bin/bash
|
# SPDX-License-Identifier: GPL-2.0
|
#
|
# Copyright (C) 2018 Uladzislau Rezki (Sony) <urezki@gmail.com>
|
#
|
# This is a test script for the kernel test driver to analyse vmalloc
|
# allocator. Therefore it is just a kernel module loader. You can specify
|
# and pass different parameters in order to:
|
# a) analyse performance of vmalloc allocations;
|
# b) stressing and stability check of vmalloc subsystem.
|
|
TEST_NAME="test_hmm"
|
DRIVER="test_hmm"
|
|
# 1 if fails
|
exitcode=1
|
|
# Kselftest framework requirement - SKIP code is 4.
|
ksft_skip=4
|
|
check_test_requirements()
|
{
|
uid=$(id -u)
|
if [ $uid -ne 0 ]; then
|
echo "$0: Must be run as root"
|
exit $ksft_skip
|
fi
|
|
if ! which modprobe > /dev/null 2>&1; then
|
echo "$0: You need modprobe installed"
|
exit $ksft_skip
|
fi
|
|
if ! modinfo $DRIVER > /dev/null 2>&1; then
|
echo "$0: You must have the following enabled in your kernel:"
|
echo "CONFIG_TEST_HMM=m"
|
exit $ksft_skip
|
fi
|
}
|
|
load_driver()
|
{
|
modprobe $DRIVER > /dev/null 2>&1
|
if [ $? == 0 ]; then
|
major=$(awk "\$2==\"HMM_DMIRROR\" {print \$1}" /proc/devices)
|
mknod /dev/hmm_dmirror0 c $major 0
|
mknod /dev/hmm_dmirror1 c $major 1
|
fi
|
}
|
|
unload_driver()
|
{
|
modprobe -r $DRIVER > /dev/null 2>&1
|
rm -f /dev/hmm_dmirror?
|
}
|
|
run_smoke()
|
{
|
echo "Running smoke test. Note, this test provides basic coverage."
|
|
load_driver
|
$(dirname "${BASH_SOURCE[0]}")/hmm-tests
|
unload_driver
|
}
|
|
usage()
|
{
|
echo -n "Usage: $0"
|
echo
|
echo "Example usage:"
|
echo
|
echo "# Shows help message"
|
echo "./${TEST_NAME}.sh"
|
echo
|
echo "# Smoke testing"
|
echo "./${TEST_NAME}.sh smoke"
|
echo
|
exit 0
|
}
|
|
function run_test()
|
{
|
if [ $# -eq 0 ]; then
|
usage
|
else
|
if [ "$1" = "smoke" ]; then
|
run_smoke
|
else
|
usage
|
fi
|
fi
|
}
|
|
check_test_requirements
|
run_test $@
|
|
exit 0
|
