kunit: allow kunit to be loaded as a module

Making kunit itself buildable as a module allows for "always-on" kunit configuration; specifying CONFIG_KUNIT=m means the module is built but only used when loaded. Kunit test modules will load kunit.ko as an implicit dependency, so simply running "modprobe my-kunit-tests" will load the tests along with the kunit module and run them. Co-developed-by: Knut Omang <[email protected]> Signed-off-by: Knut Omang <[email protected]> Signed-off-by: Alan Maguire <[email protected]> Reviewed-by: Brendan Higgins <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
akvadrako · Jan 9, 2020 · 9fe124b · 9fe124b
1 parent 1c024d4
commit 9fe124b
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Showing 3 changed files with 17 additions and 2 deletions.
diff --git a/lib/kunit/Kconfig b/lib/kunit/Kconfig
@@ -3,7 +3,7 @@
 #
 
 menuconfig KUNIT
-	bool "KUnit - Enable support for unit tests"
+	tristate "KUnit - Enable support for unit tests"
 	help
 	  Enables support for kernel unit tests (KUnit), a lightweight unit
 	  testing and mocking framework for the Linux kernel. These tests are

diff --git a/lib/kunit/Makefile b/lib/kunit/Makefile
@@ -1,4 +1,6 @@
-obj-$(CONFIG_KUNIT) +=			test.o \
+obj-$(CONFIG_KUNIT) +=			kunit.o
+
+kunit-objs +=				test.o \
 					string-stream.o \
 					assert.o \
 					try-catch.o

diff --git a/lib/kunit/test.c b/lib/kunit/test.c
@@ -486,3 +486,16 @@ void kunit_cleanup(struct kunit *test)
 	}
 }
 EXPORT_SYMBOL_GPL(kunit_cleanup);
+
+static int __init kunit_init(void)
+{
+	return 0;
+}
+late_initcall(kunit_init);
+
+static void __exit kunit_exit(void)
+{
+}
+module_exit(kunit_exit);
+
+MODULE_LICENSE("GPL v2");