Initial commit: Linux kernel 4.19 for Unplugged OS

tools/testing/selftests/user/Makefile

@@ -0,0 +1,8 @@
+# Makefile for user memory selftests
+
+# No binaries, but make sure arg-less "make" doesn't trigger "run_tests"
+all:
+
+TEST_PROGS := test_user_copy.sh
+
+include ../lib.mk

tools/testing/selftests/user/config

@@ -0,0 +1 @@
+CONFIG_TEST_USER_COPY=m

tools/testing/selftests/user/test_user_copy.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# Runs copy_to/from_user infrastructure using test_user_copy kernel module
+
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
+if ! /sbin/modprobe -q -n test_user_copy; then
+	echo "user: module test_user_copy is not found [SKIP]"
+	exit $ksft_skip
+fi
+if /sbin/modprobe -q test_user_copy; then
+	/sbin/modprobe -q -r test_user_copy
+	echo "user_copy: ok"
+else
+	echo "user_copy: [FAIL]"
+	exit 1
+fi