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c41e8866 SV |
1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* | |
3 | * KUnit tests for cpumask. | |
4 | * | |
5 | * Author: Sander Vanheule <sander@svanheule.net> | |
6 | */ | |
7 | ||
8 | #include <kunit/test.h> | |
9 | #include <linux/cpu.h> | |
10 | #include <linux/cpumask.h> | |
11 | ||
bf541358 SV |
12 | #define MASK_MSG(m) \ |
13 | "%s contains %sCPUs %*pbl", #m, (cpumask_weight(m) ? "" : "no "), \ | |
14 | nr_cpumask_bits, cpumask_bits(m) | |
15 | ||
c41e8866 SV |
16 | #define EXPECT_FOR_EACH_CPU_EQ(test, mask) \ |
17 | do { \ | |
18 | const cpumask_t *m = (mask); \ | |
19 | int mask_weight = cpumask_weight(m); \ | |
20 | int cpu, iter = 0; \ | |
21 | for_each_cpu(cpu, m) \ | |
22 | iter++; \ | |
bf541358 | 23 | KUNIT_EXPECT_EQ_MSG((test), mask_weight, iter, MASK_MSG(mask)); \ |
c41e8866 SV |
24 | } while (0) |
25 | ||
49937cd1 VS |
26 | #define EXPECT_FOR_EACH_CPU_OP_EQ(test, op, mask1, mask2) \ |
27 | do { \ | |
28 | const cpumask_t *m1 = (mask1); \ | |
29 | const cpumask_t *m2 = (mask2); \ | |
30 | int weight; \ | |
31 | int cpu, iter = 0; \ | |
32 | cpumask_##op(&mask_tmp, m1, m2); \ | |
33 | weight = cpumask_weight(&mask_tmp); \ | |
34 | for_each_cpu_##op(cpu, mask1, mask2) \ | |
35 | iter++; \ | |
36 | KUNIT_EXPECT_EQ((test), weight, iter); \ | |
37 | } while (0) | |
38 | ||
c41e8866 SV |
39 | #define EXPECT_FOR_EACH_CPU_WRAP_EQ(test, mask) \ |
40 | do { \ | |
41 | const cpumask_t *m = (mask); \ | |
42 | int mask_weight = cpumask_weight(m); \ | |
43 | int cpu, iter = 0; \ | |
44 | for_each_cpu_wrap(cpu, m, nr_cpu_ids / 2) \ | |
45 | iter++; \ | |
bf541358 | 46 | KUNIT_EXPECT_EQ_MSG((test), mask_weight, iter, MASK_MSG(mask)); \ |
c41e8866 SV |
47 | } while (0) |
48 | ||
49 | #define EXPECT_FOR_EACH_CPU_BUILTIN_EQ(test, name) \ | |
50 | do { \ | |
51 | int mask_weight = num_##name##_cpus(); \ | |
52 | int cpu, iter = 0; \ | |
53 | for_each_##name##_cpu(cpu) \ | |
54 | iter++; \ | |
bf541358 | 55 | KUNIT_EXPECT_EQ_MSG((test), mask_weight, iter, MASK_MSG(cpu_##name##_mask)); \ |
c41e8866 SV |
56 | } while (0) |
57 | ||
58 | static cpumask_t mask_empty; | |
59 | static cpumask_t mask_all; | |
49937cd1 | 60 | static cpumask_t mask_tmp; |
c41e8866 SV |
61 | |
62 | static void test_cpumask_weight(struct kunit *test) | |
63 | { | |
bf541358 SV |
64 | KUNIT_EXPECT_TRUE_MSG(test, cpumask_empty(&mask_empty), MASK_MSG(&mask_empty)); |
65 | KUNIT_EXPECT_TRUE_MSG(test, cpumask_full(&mask_all), MASK_MSG(&mask_all)); | |
c41e8866 | 66 | |
bf541358 SV |
67 | KUNIT_EXPECT_EQ_MSG(test, 0, cpumask_weight(&mask_empty), MASK_MSG(&mask_empty)); |
68 | KUNIT_EXPECT_EQ_MSG(test, nr_cpu_ids, cpumask_weight(cpu_possible_mask), | |
69 | MASK_MSG(cpu_possible_mask)); | |
596ff4a0 | 70 | KUNIT_EXPECT_EQ_MSG(test, nr_cpu_ids, cpumask_weight(&mask_all), MASK_MSG(&mask_all)); |
c41e8866 SV |
71 | } |
72 | ||
73 | static void test_cpumask_first(struct kunit *test) | |
74 | { | |
bf541358 SV |
75 | KUNIT_EXPECT_LE_MSG(test, nr_cpu_ids, cpumask_first(&mask_empty), MASK_MSG(&mask_empty)); |
76 | KUNIT_EXPECT_EQ_MSG(test, 0, cpumask_first(cpu_possible_mask), MASK_MSG(cpu_possible_mask)); | |
c41e8866 | 77 | |
bf541358 SV |
78 | KUNIT_EXPECT_EQ_MSG(test, 0, cpumask_first_zero(&mask_empty), MASK_MSG(&mask_empty)); |
79 | KUNIT_EXPECT_LE_MSG(test, nr_cpu_ids, cpumask_first_zero(cpu_possible_mask), | |
80 | MASK_MSG(cpu_possible_mask)); | |
c41e8866 SV |
81 | } |
82 | ||
83 | static void test_cpumask_last(struct kunit *test) | |
84 | { | |
bf541358 SV |
85 | KUNIT_EXPECT_LE_MSG(test, nr_cpumask_bits, cpumask_last(&mask_empty), |
86 | MASK_MSG(&mask_empty)); | |
87 | KUNIT_EXPECT_EQ_MSG(test, nr_cpu_ids - 1, cpumask_last(cpu_possible_mask), | |
88 | MASK_MSG(cpu_possible_mask)); | |
c41e8866 SV |
89 | } |
90 | ||
91 | static void test_cpumask_next(struct kunit *test) | |
92 | { | |
bf541358 SV |
93 | KUNIT_EXPECT_EQ_MSG(test, 0, cpumask_next_zero(-1, &mask_empty), MASK_MSG(&mask_empty)); |
94 | KUNIT_EXPECT_LE_MSG(test, nr_cpu_ids, cpumask_next_zero(-1, cpu_possible_mask), | |
95 | MASK_MSG(cpu_possible_mask)); | |
c41e8866 | 96 | |
bf541358 SV |
97 | KUNIT_EXPECT_LE_MSG(test, nr_cpu_ids, cpumask_next(-1, &mask_empty), |
98 | MASK_MSG(&mask_empty)); | |
99 | KUNIT_EXPECT_EQ_MSG(test, 0, cpumask_next(-1, cpu_possible_mask), | |
100 | MASK_MSG(cpu_possible_mask)); | |
c41e8866 SV |
101 | } |
102 | ||
103 | static void test_cpumask_iterators(struct kunit *test) | |
104 | { | |
105 | EXPECT_FOR_EACH_CPU_EQ(test, &mask_empty); | |
c41e8866 | 106 | EXPECT_FOR_EACH_CPU_WRAP_EQ(test, &mask_empty); |
49937cd1 VS |
107 | EXPECT_FOR_EACH_CPU_OP_EQ(test, and, &mask_empty, &mask_empty); |
108 | EXPECT_FOR_EACH_CPU_OP_EQ(test, and, cpu_possible_mask, &mask_empty); | |
109 | EXPECT_FOR_EACH_CPU_OP_EQ(test, andnot, &mask_empty, &mask_empty); | |
c41e8866 SV |
110 | |
111 | EXPECT_FOR_EACH_CPU_EQ(test, cpu_possible_mask); | |
c41e8866 | 112 | EXPECT_FOR_EACH_CPU_WRAP_EQ(test, cpu_possible_mask); |
49937cd1 VS |
113 | EXPECT_FOR_EACH_CPU_OP_EQ(test, and, cpu_possible_mask, cpu_possible_mask); |
114 | EXPECT_FOR_EACH_CPU_OP_EQ(test, andnot, cpu_possible_mask, &mask_empty); | |
c41e8866 SV |
115 | } |
116 | ||
117 | static void test_cpumask_iterators_builtin(struct kunit *test) | |
118 | { | |
119 | EXPECT_FOR_EACH_CPU_BUILTIN_EQ(test, possible); | |
120 | ||
121 | /* Ensure the dynamic masks are stable while running the tests */ | |
122 | cpu_hotplug_disable(); | |
123 | ||
124 | EXPECT_FOR_EACH_CPU_BUILTIN_EQ(test, online); | |
125 | EXPECT_FOR_EACH_CPU_BUILTIN_EQ(test, present); | |
126 | ||
127 | cpu_hotplug_enable(); | |
128 | } | |
129 | ||
130 | static int test_cpumask_init(struct kunit *test) | |
131 | { | |
132 | cpumask_clear(&mask_empty); | |
133 | cpumask_setall(&mask_all); | |
134 | ||
135 | return 0; | |
136 | } | |
137 | ||
138 | static struct kunit_case test_cpumask_cases[] = { | |
139 | KUNIT_CASE(test_cpumask_weight), | |
140 | KUNIT_CASE(test_cpumask_first), | |
141 | KUNIT_CASE(test_cpumask_last), | |
142 | KUNIT_CASE(test_cpumask_next), | |
143 | KUNIT_CASE(test_cpumask_iterators), | |
144 | KUNIT_CASE(test_cpumask_iterators_builtin), | |
145 | {} | |
146 | }; | |
147 | ||
148 | static struct kunit_suite test_cpumask_suite = { | |
149 | .name = "cpumask", | |
150 | .init = test_cpumask_init, | |
151 | .test_cases = test_cpumask_cases, | |
152 | }; | |
153 | kunit_test_suite(test_cpumask_suite); | |
154 | ||
155 | MODULE_LICENSE("GPL"); |