lib: Move KUnit tests into tests/ subdirectory

Following from the recent KUnit file naming discussion[1], move all
KUnit tests in lib/ into lib/tests/.

Link: https://lore.kernel.org/lkml/20240720165441.it.320-kees@kernel.org/ [1]
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: David Gow <davidgow@google.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Rae Moar <rmoar@google.com>
Link: https://lore.kernel.org/r/20241202075545.3648096-4-davidgow@google.com
Signed-off-by: Kees Cook <kees@kernel.org>

1 files changed, 0 insertions, 123 deletions

diff --git a/lib/test_list_sort.c b/lib/test_list_sort.c
deleted file mode 100644
index 30879abc8a42..000000000000
--- a/lib/test_list_sort.c
+++ /dev/null
@@ -1,123 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-#include <kunit/test.h>
-
-#include <linux/kernel.h>
-#include <linux/list_sort.h>
-#include <linux/list.h>
-#include <linux/module.h>
-#include <linux/printk.h>
-#include <linux/slab.h>
-#include <linux/random.h>
-
-/*
- * The pattern of set bits in the list length determines which cases
- * are hit in list_sort().
- */
-#define TEST_LIST_LEN (512+128+2) /* not including head */
-
-#define TEST_POISON1 0xDEADBEEF
-#define TEST_POISON2 0xA324354C
-
-struct debug_el {
-	unsigned int poison1;
-	struct list_head list;
-	unsigned int poison2;
-	int value;
-	unsigned int serial;
-};
-
-static void check(struct kunit *test, struct debug_el *ela, struct debug_el *elb)
-{
-	struct debug_el **elts = test->priv;
-
-	KUNIT_EXPECT_LT_MSG(test, ela->serial, (unsigned int)TEST_LIST_LEN, "incorrect serial");
-	KUNIT_EXPECT_LT_MSG(test, elb->serial, (unsigned int)TEST_LIST_LEN, "incorrect serial");
-
-	KUNIT_EXPECT_PTR_EQ_MSG(test, elts[ela->serial], ela, "phantom element");
-	KUNIT_EXPECT_PTR_EQ_MSG(test, elts[elb->serial], elb, "phantom element");
-
-	KUNIT_EXPECT_EQ_MSG(test, ela->poison1, TEST_POISON1, "bad poison");
-	KUNIT_EXPECT_EQ_MSG(test, ela->poison2, TEST_POISON2, "bad poison");
-
-	KUNIT_EXPECT_EQ_MSG(test, elb->poison1, TEST_POISON1, "bad poison");
-	KUNIT_EXPECT_EQ_MSG(test, elb->poison2, TEST_POISON2, "bad poison");
-}
-
-/* `priv` is the test pointer so check() can fail the test if the list is invalid. */
-static int cmp(void *priv, const struct list_head *a, const struct list_head *b)
-{
-	struct debug_el *ela, *elb;
-
-	ela = container_of(a, struct debug_el, list);
-	elb = container_of(b, struct debug_el, list);
-
-	check(priv, ela, elb);
-	return ela->value - elb->value;
-}
-
-static void list_sort_test(struct kunit *test)
-{
-	int i, count = 1;
-	struct debug_el *el, **elts;
-	struct list_head *cur;
-	LIST_HEAD(head);
-
-	elts = kunit_kcalloc(test, TEST_LIST_LEN, sizeof(*elts), GFP_KERNEL);
-	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, elts);
-	test->priv = elts;
-
-	for (i = 0; i < TEST_LIST_LEN; i++) {
-		el = kunit_kmalloc(test, sizeof(*el), GFP_KERNEL);
-		KUNIT_ASSERT_NOT_ERR_OR_NULL(test, el);
-
-		 /* force some equivalencies */
-		el->value = get_random_u32_below(TEST_LIST_LEN / 3);
-		el->serial = i;
-		el->poison1 = TEST_POISON1;
-		el->poison2 = TEST_POISON2;
-		elts[i] = el;
-		list_add_tail(&el->list, &head);
-	}
-
-	list_sort(test, &head, cmp);
-
-	for (cur = head.next; cur->next != &head; cur = cur->next) {
-		struct debug_el *el1;
-		int cmp_result;
-
-		KUNIT_ASSERT_PTR_EQ_MSG(test, cur->next->prev, cur,
-					"list is corrupted");
-
-		cmp_result = cmp(test, cur, cur->next);
-		KUNIT_ASSERT_LE_MSG(test, cmp_result, 0, "list is not sorted");
-
-		el = container_of(cur, struct debug_el, list);
-		el1 = container_of(cur->next, struct debug_el, list);
-		if (cmp_result == 0) {
-			KUNIT_ASSERT_LE_MSG(test, el->serial, el1->serial,
-					    "order of equivalent elements not preserved");
-		}
-
-		check(test, el, el1);
-		count++;
-	}
-	KUNIT_EXPECT_PTR_EQ_MSG(test, head.prev, cur, "list is corrupted");
-
-	KUNIT_EXPECT_EQ_MSG(test, count, TEST_LIST_LEN,
-			    "list length changed after sorting!");
-}
-
-static struct kunit_case list_sort_cases[] = {
-	KUNIT_CASE(list_sort_test),
-	{}
-};
-
-static struct kunit_suite list_sort_suite = {
-	.name = "list_sort",
-	.test_cases = list_sort_cases,
-};
-
-kunit_test_suites(&list_sort_suite);
-
-MODULE_DESCRIPTION("list_sort() KUnit test suite");
-MODULE_LICENSE("GPL");