Commit d7fd696c authored by David Gow's avatar David Gow Committed by Shuah Khan
Browse files

list: test: Add test for list_del_init_careful() 

The list_del_init_careful() function was added[1] after the list KUnit
test. Add a very basic test to cover it.

Note that this test only covers the single-threaded behaviour (which
matches list_del_init()), as is already the case with the test for
list_empty_careful().

[1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c6fe44d96fc1536af5b11cd859686453d1b7bfd1



Signed-off-by: default avatarDavid Gow <davidgow@google.com>
Reviewed-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarShuah Khan <skhan@linuxfoundation.org>
parent c2741453

lib/list-test.c

+21 −0
Original line number Diff line number Diff line
@@ -161,6 +161,26 @@ static void list_test_list_del_init(struct kunit *test) 
	KUNIT_EXPECT_TRUE(test, list_empty_careful(&a));

}



static void list_test_list_del_init_careful(struct kunit *test)

{

	/* NOTE: This test only checks the behaviour of this function in

	 * isolation. It does not verify memory model guarantees.

	 */

	struct list_head a, b;

	LIST_HEAD(list);



	list_add_tail(&a, &list);

	list_add_tail(&b, &list);



	/* before: [list] -> a -> b */

	list_del_init_careful(&a);

	/* after: [list] -> b, a initialised */



	KUNIT_EXPECT_PTR_EQ(test, list.next, &b);

	KUNIT_EXPECT_PTR_EQ(test, b.prev, &list);

	KUNIT_EXPECT_TRUE(test, list_empty_careful(&a));

}



static void list_test_list_move(struct kunit *test)

{

	struct list_head a, b;
@@ -707,6 +727,7 @@ static struct kunit_case list_test_cases[] = { 
	KUNIT_CASE(list_test_list_replace_init),

	KUNIT_CASE(list_test_list_swap),

	KUNIT_CASE(list_test_list_del_init),

	KUNIT_CASE(list_test_list_del_init_careful),

	KUNIT_CASE(list_test_list_move),

	KUNIT_CASE(list_test_list_move_tail),

	KUNIT_CASE(list_test_list_bulk_move_tail),