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Commit d3460527 authored by Tobin C. Harding's avatar Tobin C. Harding Committed by Shuah Khan
Browse files

kselftest: Add test runner creation script 



Currently if we wish to use kselftest to run tests within a kernel
module we write a small script to load/unload and do error reporting.
There are a bunch of these under tools/testing/selftests/lib/ that are
all identical except for the test name.  We can reduce code duplication
and improve maintainability if we have one version of this.  However
kselftest requires an executable for each test.  We can move all the
script logic to a central script then have each individual test script
call the main script.

Oneliner to call kselftest_module.sh courtesy of Kees, thanks!

Add test runner creation script.  Convert
tools/testing/selftests/lib/*.sh to use new test creation script.

Testing
-------

Configure kselftests for lib/ then build and boot kernel.  Then run
kselftests as follows:

  $ cd /path/to/kernel/tree
  $ sudo make O=$output_path -C tools/testing/selftests TARGETS="lib" run_tests

and also

  $ cd /path/to/kernel/tree
  $ cd tools/testing/selftests
  $ sudo make O=$output_path TARGETS="lib" run_tests

and also

  $ cd /path/to/kernel/tree
  $ cd tools/testing/selftests
  $ sudo make TARGETS="lib" run_tests

Acked-by: default avatarKees Cook <keescook@chromium.org>
Signed-off-by: default avatarTobin C. Harding <tobin@kernel.org>
Signed-off-by: default avatarShuah Khan <shuah@kernel.org>
parent 6989808e

tools/testing/selftests/kselftest_module.sh

0 → 100755
+84 −0
Original line number Diff line number Diff line 
#!/bin/sh

# SPDX-License-Identifier: GPL-2.0+



#

# Runs an individual test module.

#

# kselftest expects a separate executable for each test, this can be

# created by adding a script like this:

#

#   #!/bin/sh

#   SPDX-License-Identifier: GPL-2.0+

#   $(dirname $0)/../kselftest_module.sh "description" module_name

#

# Example: tools/testing/selftests/lib/printf.sh



desc=""				# Output prefix.

module=""			# Filename (without the .ko).

args=""				# modprobe arguments.



modprobe="/sbin/modprobe"



main() {

    parse_args "$@"

    assert_root

    assert_have_module

    run_module

}



parse_args() {

    script=${0##*/}



    if [ $# -lt 2 ]; then

	echo "Usage: $script <description> <module_name> [FAIL]"

	exit 1

    fi



    desc="$1"

    shift || true

    module="$1"

    shift || true

    args="$@"

}



assert_root() {

    if [ ! -w /dev ]; then

	skip "please run as root"

    fi

}



assert_have_module() {

    if ! $modprobe -q -n $module; then

	skip "module $module is not found"

    fi

}



run_module() {

    if $modprobe -q $module $args; then

	$modprobe -q -r $module

	say "ok"

    else

	fail ""

    fi

}



say() {

    echo "$desc: $1"

}





fail() {

    say "$1 [FAIL]" >&2

    exit 1

}



skip() {

    say "$1 [SKIP]" >&2

    # Kselftest framework requirement - SKIP code is 4.

    exit 4

}



#

# Main script

#

main "$@"

tools/testing/selftests/lib/bitmap.sh

+1 −17
Original line number Diff line number Diff line 
#!/bin/sh

# SPDX-License-Identifier: GPL-2.0



# Kselftest framework requirement - SKIP code is 4.

ksft_skip=4



# Runs bitmap infrastructure tests using test_bitmap kernel module

if ! /sbin/modprobe -q -n test_bitmap; then

	echo "bitmap: module test_bitmap is not found [SKIP]"

	exit $ksft_skip

fi



if /sbin/modprobe -q test_bitmap; then

	/sbin/modprobe -q -r test_bitmap

	echo "bitmap: ok"

else

	echo "bitmap: [FAIL]"

	exit 1

fi
 
$(dirname $0)/../kselftest_module.sh "bitmap" test_bitmap

tools/testing/selftests/lib/prime_numbers.sh

+1 −16
Original line number Diff line number Diff line 
#!/bin/sh

# SPDX-License-Identifier: GPL-2.0

# Checks fast/slow prime_number generation for inconsistencies



# Kselftest framework requirement - SKIP code is 4.

ksft_skip=4



if ! /sbin/modprobe -q -n prime_numbers; then

	echo "prime_numbers: module prime_numbers is not found [SKIP]"

	exit $ksft_skip

fi



if /sbin/modprobe -q prime_numbers selftest=65536; then

	/sbin/modprobe -q -r prime_numbers

	echo "prime_numbers: ok"

else

	echo "prime_numbers: [FAIL]"

	exit 1

fi
 
$(dirname $0)/../kselftest_module.sh "prime numbers" prime_numbers selftest=65536

tools/testing/selftests/lib/printf.sh

+2 −17
Original line number Diff line number Diff line 
#!/bin/sh

# SPDX-License-Identifier: GPL-2.0

# Runs printf infrastructure using test_printf kernel module



# Kselftest framework requirement - SKIP code is 4.

ksft_skip=4



if ! /sbin/modprobe -q -n test_printf; then

	echo "printf: module test_printf is not found [SKIP]"

	exit $ksft_skip

fi



if /sbin/modprobe -q test_printf; then

	/sbin/modprobe -q -r test_printf

	echo "printf: ok"

else

	echo "printf: [FAIL]"

	exit 1

fi
 
# Tests the printf infrastructure using test_printf kernel module.

$(dirname $0)/../kselftest_module.sh "printf" test_printf