1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
// SPDX-License-Identifier: GPL-2.0-only
#include <kunit/test.h>
#include <linux/ratelimit.h>
#include <linux/module.h>
/* a simple boot-time regression test */
#define TESTRL_INTERVAL (5 * HZ)
static DEFINE_RATELIMIT_STATE(testrl, TESTRL_INTERVAL, 3);
#define test_ratelimited(test, expected) \
KUNIT_ASSERT_EQ(test, ___ratelimit(&testrl, "test_ratelimit_smoke"), (expected))
static void test_ratelimit_smoke(struct kunit *test)
{
// Check settings.
KUNIT_ASSERT_GE(test, TESTRL_INTERVAL, 100);
// Test normal operation.
test_ratelimited(test, true);
test_ratelimited(test, true);
test_ratelimited(test, true);
test_ratelimited(test, false);
schedule_timeout_idle(TESTRL_INTERVAL - 40);
test_ratelimited(test, false);
schedule_timeout_idle(50);
test_ratelimited(test, true);
schedule_timeout_idle(2 * TESTRL_INTERVAL);
test_ratelimited(test, true);
test_ratelimited(test, true);
schedule_timeout_idle(TESTRL_INTERVAL - 40);
test_ratelimited(test, true);
schedule_timeout_idle(50);
test_ratelimited(test, true);
test_ratelimited(test, true);
test_ratelimited(test, true);
test_ratelimited(test, false);
// Test disabling.
testrl.burst = 0;
test_ratelimited(test, false);
testrl.burst = 2;
testrl.interval = 0;
test_ratelimited(test, true);
test_ratelimited(test, true);
test_ratelimited(test, true);
test_ratelimited(test, true);
test_ratelimited(test, true);
test_ratelimited(test, true);
test_ratelimited(test, true);
// Testing re-enabling.
testrl.interval = TESTRL_INTERVAL;
test_ratelimited(test, true);
test_ratelimited(test, true);
test_ratelimited(test, false);
test_ratelimited(test, false);
}
static struct kunit_case sort_test_cases[] = {
KUNIT_CASE_SLOW(test_ratelimit_smoke),
{}
};
static struct kunit_suite ratelimit_test_suite = {
.name = "lib_ratelimit",
.test_cases = sort_test_cases,
};
kunit_test_suites(&ratelimit_test_suite);
MODULE_DESCRIPTION("___ratelimit() KUnit test suite");
MODULE_LICENSE("GPL");
|
