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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: David Gow <davidgow@google.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
David Gow 2022-02-25 10:52:46 +08:00 committed by Shuah Khan
parent c274145347
commit d7fd696c12
1 changed files with 21 additions and 0 deletions
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21
lib/list-test.c
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@ -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),