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1// SPDX-License-Identifier: GPL-2.0-only
2#include <linux/sort.h>
3#include <linux/slab.h>
4#include <linux/module.h>
5
6/* a simple boot-time regression test */
7
8#define TEST_LEN 1000
9
10static int __init cmpint(const void *a, const void *b)
11{
12 return *(int *)a - *(int *)b;
13}
14
15static int __init test_sort_init(void)
16{
17 int *a, i, r = 1, err = -ENOMEM;
18
19 a = kmalloc_array(TEST_LEN, sizeof(*a), GFP_KERNEL);
20 if (!a)
21 return err;
22
23 for (i = 0; i < TEST_LEN; i++) {
24 r = (r * 725861) % 6599;
25 a[i] = r;
26 }
27
28 sort(a, TEST_LEN, sizeof(*a), cmpint, NULL);
29
30 err = -EINVAL;
31 for (i = 0; i < TEST_LEN-1; i++)
32 if (a[i] > a[i+1]) {
33 pr_err("test has failed\n");
34 goto exit;
35 }
36 err = 0;
37 pr_info("test passed\n");
38exit:
39 kfree(a);
40 return err;
41}
42
43static void __exit test_sort_exit(void)
44{
45}
46
47module_init(test_sort_init);
48module_exit(test_sort_exit);
49
50MODULE_LICENSE("GPL");
1// SPDX-License-Identifier: GPL-2.0-only
2
3#include <kunit/test.h>
4
5#include <linux/sort.h>
6#include <linux/slab.h>
7#include <linux/module.h>
8
9/* a simple boot-time regression test */
10
11#define TEST_LEN 1000
12
13static int cmpint(const void *a, const void *b)
14{
15 return *(int *)a - *(int *)b;
16}
17
18static void test_sort(struct kunit *test)
19{
20 int *a, i, r = 1;
21
22 a = kunit_kmalloc_array(test, TEST_LEN, sizeof(*a), GFP_KERNEL);
23 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, a);
24
25 for (i = 0; i < TEST_LEN; i++) {
26 r = (r * 725861) % 6599;
27 a[i] = r;
28 }
29
30 sort(a, TEST_LEN, sizeof(*a), cmpint, NULL);
31
32 for (i = 0; i < TEST_LEN - 1; i++)
33 KUNIT_ASSERT_LE(test, a[i], a[i + 1]);
34
35 r = 48;
36
37 for (i = 0; i < TEST_LEN - 1; i++) {
38 r = (r * 725861) % 6599;
39 a[i] = r;
40 }
41
42 sort(a, TEST_LEN - 1, sizeof(*a), cmpint, NULL);
43
44 for (i = 0; i < TEST_LEN - 2; i++)
45 KUNIT_ASSERT_LE(test, a[i], a[i + 1]);
46}
47
48static struct kunit_case sort_test_cases[] = {
49 KUNIT_CASE(test_sort),
50 {}
51};
52
53static struct kunit_suite sort_test_suite = {
54 .name = "lib_sort",
55 .test_cases = sort_test_cases,
56};
57
58kunit_test_suites(&sort_test_suite);
59
60MODULE_DESCRIPTION("sort() KUnit test suite");
61MODULE_LICENSE("GPL");