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14e08757 LC |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* | |
3 | * Copyright 2019 NXP | |
4 | */ | |
5 | #include <kunit/test.h> | |
6 | #include <linux/pm_qos.h> | |
7 | ||
8 | /* Basic test for aggregating two "min" requests */ | |
9 | static void freq_qos_test_min(struct kunit *test) | |
10 | { | |
11 | struct freq_constraints qos; | |
12 | struct freq_qos_request req1, req2; | |
13 | int ret; | |
14 | ||
15 | freq_constraints_init(&qos); | |
16 | memset(&req1, 0, sizeof(req1)); | |
17 | memset(&req2, 0, sizeof(req2)); | |
18 | ||
19 | ret = freq_qos_add_request(&qos, &req1, FREQ_QOS_MIN, 1000); | |
20 | KUNIT_EXPECT_EQ(test, ret, 1); | |
21 | ret = freq_qos_add_request(&qos, &req2, FREQ_QOS_MIN, 2000); | |
22 | KUNIT_EXPECT_EQ(test, ret, 1); | |
23 | ||
24 | KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), 2000); | |
25 | ||
26 | ret = freq_qos_remove_request(&req2); | |
27 | KUNIT_EXPECT_EQ(test, ret, 1); | |
28 | KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), 1000); | |
29 | ||
30 | ret = freq_qos_remove_request(&req1); | |
31 | KUNIT_EXPECT_EQ(test, ret, 1); | |
32 | KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), | |
33 | FREQ_QOS_MIN_DEFAULT_VALUE); | |
34 | } | |
35 | ||
36 | /* Test that requests for MAX_DEFAULT_VALUE have no effect */ | |
37 | static void freq_qos_test_maxdef(struct kunit *test) | |
38 | { | |
39 | struct freq_constraints qos; | |
40 | struct freq_qos_request req1, req2; | |
41 | int ret; | |
42 | ||
43 | freq_constraints_init(&qos); | |
44 | memset(&req1, 0, sizeof(req1)); | |
45 | memset(&req2, 0, sizeof(req2)); | |
46 | KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MAX), | |
47 | FREQ_QOS_MAX_DEFAULT_VALUE); | |
48 | ||
49 | ret = freq_qos_add_request(&qos, &req1, FREQ_QOS_MAX, | |
50 | FREQ_QOS_MAX_DEFAULT_VALUE); | |
51 | KUNIT_EXPECT_EQ(test, ret, 0); | |
52 | ret = freq_qos_add_request(&qos, &req2, FREQ_QOS_MAX, | |
53 | FREQ_QOS_MAX_DEFAULT_VALUE); | |
54 | KUNIT_EXPECT_EQ(test, ret, 0); | |
55 | ||
56 | /* Add max 1000 */ | |
57 | ret = freq_qos_update_request(&req1, 1000); | |
58 | KUNIT_EXPECT_EQ(test, ret, 1); | |
59 | KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MAX), 1000); | |
60 | ||
61 | /* Add max 2000, no impact */ | |
62 | ret = freq_qos_update_request(&req2, 2000); | |
63 | KUNIT_EXPECT_EQ(test, ret, 0); | |
64 | KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MAX), 1000); | |
65 | ||
66 | /* Remove max 1000, new max 2000 */ | |
67 | ret = freq_qos_remove_request(&req1); | |
68 | KUNIT_EXPECT_EQ(test, ret, 1); | |
69 | KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MAX), 2000); | |
70 | } | |
71 | ||
72 | /* | |
73 | * Test that a freq_qos_request can be added again after removal | |
74 | * | |
75 | * This issue was solved by commit 05ff1ba412fd ("PM: QoS: Invalidate frequency | |
76 | * QoS requests after removal") | |
77 | */ | |
78 | static void freq_qos_test_readd(struct kunit *test) | |
79 | { | |
80 | struct freq_constraints qos; | |
81 | struct freq_qos_request req; | |
82 | int ret; | |
83 | ||
84 | freq_constraints_init(&qos); | |
85 | memset(&req, 0, sizeof(req)); | |
86 | KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), | |
87 | FREQ_QOS_MIN_DEFAULT_VALUE); | |
88 | ||
89 | /* Add */ | |
90 | ret = freq_qos_add_request(&qos, &req, FREQ_QOS_MIN, 1000); | |
91 | KUNIT_EXPECT_EQ(test, ret, 1); | |
92 | KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), 1000); | |
93 | ||
94 | /* Remove */ | |
95 | ret = freq_qos_remove_request(&req); | |
96 | KUNIT_EXPECT_EQ(test, ret, 1); | |
97 | KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), | |
98 | FREQ_QOS_MIN_DEFAULT_VALUE); | |
99 | ||
100 | /* Add again */ | |
101 | ret = freq_qos_add_request(&qos, &req, FREQ_QOS_MIN, 2000); | |
102 | KUNIT_EXPECT_EQ(test, ret, 1); | |
103 | KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), 2000); | |
104 | } | |
105 | ||
106 | static struct kunit_case pm_qos_test_cases[] = { | |
107 | KUNIT_CASE(freq_qos_test_min), | |
108 | KUNIT_CASE(freq_qos_test_maxdef), | |
109 | KUNIT_CASE(freq_qos_test_readd), | |
110 | {}, | |
111 | }; | |
112 | ||
113 | static struct kunit_suite pm_qos_test_module = { | |
114 | .name = "qos-kunit-test", | |
115 | .test_cases = pm_qos_test_cases, | |
116 | }; | |
c475c77d | 117 | kunit_test_suites(&pm_qos_test_module); |