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-rwxr-xr-xtools/testing/selftests/kselftest/module.sh84
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diff --git a/tools/testing/selftests/kselftest/module.sh b/tools/testing/selftests/kselftest/module.sh
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+++ b/tools/testing/selftests/kselftest/module.sh
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+#!/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 "$1 [SKIP]" >&2
+ # Kselftest framework requirement - SKIP code is 4.
+ exit 4
+}
+
+#
+# Main script
+#
+main "$@"