selftests/vm: add script helper for CONFIG_TEST_VMALLOC_MODULE

    echo "[PASS]"

    echo "[PASS]"

fi

fi

echo "------------------------------------"

echo "running vmalloc stability smoke test"

echo "------------------------------------"

./test_vmalloc.sh smoke

ret_val=$?

if [ $ret_val -eq 0 ]; then

	echo "[PASS]"

elif [ $ret_val -eq $ksft_skip ]; then

	 echo "[SKIP]"

	 exitcode=$ksft_skip

else

	echo "[FAIL]"

	exitcode=1

fi

exit $exitcode

exit $exitcode

#!/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="vmalloc"

DRIVER="test_${TEST_NAME}"

# 1 if fails

exitcode=1

# Kselftest framework requirement - SKIP code is 4.

ksft_skip=4

#

# Static templates for performance, stressing and smoke tests.

# Also it is possible to pass any supported parameters manualy.

#

PERF_PARAM="single_cpu_test=1 sequential_test_order=1 test_repeat_count=3"

SMOKE_PARAM="single_cpu_test=1 test_loop_count=10000 test_repeat_count=10"

STRESS_PARAM="test_repeat_count=20"

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_VMALLOC=m"

		exit $ksft_skip

	fi

}

run_perfformance_check()

{

	echo "Run performance tests to evaluate how fast vmalloc allocation is."

	echo "It runs all test cases on one single CPU with sequential order."

	modprobe $DRIVER $PERF_PARAM > /dev/null 2>&1

	echo "Done."

	echo "Ccheck the kernel message buffer to see the summary."

}

run_stability_check()

{

	echo "Run stability tests. In order to stress vmalloc subsystem we run"

	echo "all available test cases on all available CPUs simultaneously."

	echo "It will take time, so be patient."

	modprobe $DRIVER $STRESS_PARAM > /dev/null 2>&1

	echo "Done."

	echo "Check the kernel ring buffer to see the summary."

}

run_smoke_check()

{

	echo "Run smoke test. Note, this test provides basic coverage."

	echo "Please check $0 output how it can be used"

	echo "for deep performance analysis as well as stress testing."

	modprobe $DRIVER $SMOKE_PARAM > /dev/null 2>&1

	echo "Done."

	echo "Check the kernel ring buffer to see the summary."

}

usage()

{

	echo -n "Usage: $0 [ performance ] | [ stress ] | | [ smoke ] | "

	echo "manual parameters"

	echo

	echo "Valid tests and parameters:"

	echo

	modinfo $DRIVER

	echo

	echo "Example usage:"

	echo

	echo "# Shows help message"

	echo "./${DRIVER}.sh"

	echo

	echo "# Runs 1 test(id_1), repeats it 5 times on all online CPUs"

	echo "./${DRIVER}.sh run_test_mask=1 test_repeat_count=5"

	echo

	echo -n "# Runs 4 tests(id_1|id_2|id_4|id_16) on one CPU with "

	echo "sequential order"

	echo -n "./${DRIVER}.sh single_cpu_test=1 sequential_test_order=1 "

	echo "run_test_mask=23"

	echo

	echo -n "# Runs all tests on all online CPUs, shuffled order, repeats "

	echo "20 times"

	echo "./${DRIVER}.sh test_repeat_count=20"

	echo

	echo "# Performance analysis"

	echo "./${DRIVER}.sh performance"

	echo

	echo "# Stress testing"

	echo "./${DRIVER}.sh stress"

	echo

	exit 0

}

function validate_passed_args()

{

	VALID_ARGS=`modinfo $DRIVER | awk '/parm:/ {print $2}' | sed 's/:.*//'`

	#

	# Something has been passed, check it.

	#

	for passed_arg in $@; do

		key=${passed_arg//=*/}

		val="${passed_arg:$((${#key}+1))}"

		valid=0

		for valid_arg in $VALID_ARGS; do

			if [[ $key = $valid_arg ]] && [[ $val -gt 0 ]]; then

				valid=1

				break

			fi

		done

		if [[ $valid -ne 1 ]]; then

			echo "Error: key or value is not correct: ${key} $val"

			exit $exitcode

		fi

	done

}

function run_manual_check()

{

	#

	# Validate passed parameters. If there is wrong one,

	# the script exists and does not execute further.

	#

	validate_passed_args $@

	echo "Run the test with following parameters: $@"

	modprobe $DRIVER $@ > /dev/null 2>&1

	echo "Done."

	echo "Check the kernel ring buffer to see the summary."

}

function run_test()

{

	if [ $# -eq 0 ]; then

		usage

	else

		if [[ "$1" = "performance" ]]; then

			run_perfformance_check

		elif [[ "$1" = "stress" ]]; then

			run_stability_check

		elif [[ "$1" = "smoke" ]]; then

			run_smoke_check

		else

			run_manual_check $@

		fi

	fi

}

check_test_requirements

run_test $@

exit 0