Commit | Line | Data |
---|---|---|
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 | ||
26 | #define EXPECT_FOR_EACH_CPU_NOT_EQ(test, mask) \ | |
27 | do { \ | |
28 | const cpumask_t *m = (mask); \ | |
29 | int mask_weight = cpumask_weight(m); \ | |
30 | int cpu, iter = 0; \ | |
31 | for_each_cpu_not(cpu, m) \ | |
32 | iter++; \ | |
bf541358 | 33 | KUNIT_EXPECT_EQ_MSG((test), nr_cpu_ids - mask_weight, iter, MASK_MSG(mask)); \ |
c41e8866 SV |
34 | } while (0) |
35 | ||
49937cd1 VS |
36 | #define EXPECT_FOR_EACH_CPU_OP_EQ(test, op, mask1, mask2) \ |
37 | do { \ | |
38 | const cpumask_t *m1 = (mask1); \ | |
39 | const cpumask_t *m2 = (mask2); \ | |
40 | int weight; \ | |
41 | int cpu, iter = 0; \ | |
42 | cpumask_##op(&mask_tmp, m1, m2); \ | |
43 | weight = cpumask_weight(&mask_tmp); \ | |
44 | for_each_cpu_##op(cpu, mask1, mask2) \ | |
45 | iter++; \ | |
46 | KUNIT_EXPECT_EQ((test), weight, iter); \ | |
47 | } while (0) | |
48 | ||
c41e8866 SV |
49 | #define EXPECT_FOR_EACH_CPU_WRAP_EQ(test, mask) \ |
50 | do { \ | |
51 | const cpumask_t *m = (mask); \ | |
52 | int mask_weight = cpumask_weight(m); \ | |
53 | int cpu, iter = 0; \ | |
54 | for_each_cpu_wrap(cpu, m, nr_cpu_ids / 2) \ | |
55 | iter++; \ | |
bf541358 | 56 | KUNIT_EXPECT_EQ_MSG((test), mask_weight, iter, MASK_MSG(mask)); \ |
c41e8866 SV |
57 | } while (0) |
58 | ||
59 | #define EXPECT_FOR_EACH_CPU_BUILTIN_EQ(test, name) \ | |
60 | do { \ | |
61 | int mask_weight = num_##name##_cpus(); \ | |
62 | int cpu, iter = 0; \ | |
63 | for_each_##name##_cpu(cpu) \ | |
64 | iter++; \ | |
bf541358 | 65 | KUNIT_EXPECT_EQ_MSG((test), mask_weight, iter, MASK_MSG(cpu_##name##_mask)); \ |
c41e8866 SV |
66 | } while (0) |
67 | ||
68 | static cpumask_t mask_empty; | |
69 | static cpumask_t mask_all; | |
49937cd1 | 70 | static cpumask_t mask_tmp; |
c41e8866 SV |
71 | |
72 | static void test_cpumask_weight(struct kunit *test) | |
73 | { | |
bf541358 SV |
74 | KUNIT_EXPECT_TRUE_MSG(test, cpumask_empty(&mask_empty), MASK_MSG(&mask_empty)); |
75 | KUNIT_EXPECT_TRUE_MSG(test, cpumask_full(&mask_all), MASK_MSG(&mask_all)); | |
c41e8866 | 76 | |
bf541358 SV |
77 | KUNIT_EXPECT_EQ_MSG(test, 0, cpumask_weight(&mask_empty), MASK_MSG(&mask_empty)); |
78 | KUNIT_EXPECT_EQ_MSG(test, nr_cpu_ids, cpumask_weight(cpu_possible_mask), | |
79 | MASK_MSG(cpu_possible_mask)); | |
80 | KUNIT_EXPECT_EQ_MSG(test, nr_cpumask_bits, cpumask_weight(&mask_all), MASK_MSG(&mask_all)); | |
c41e8866 SV |
81 | } |
82 | ||
83 | static void test_cpumask_first(struct kunit *test) | |
84 | { | |
bf541358 SV |
85 | KUNIT_EXPECT_LE_MSG(test, nr_cpu_ids, cpumask_first(&mask_empty), MASK_MSG(&mask_empty)); |
86 | KUNIT_EXPECT_EQ_MSG(test, 0, cpumask_first(cpu_possible_mask), MASK_MSG(cpu_possible_mask)); | |
c41e8866 | 87 | |
bf541358 SV |
88 | KUNIT_EXPECT_EQ_MSG(test, 0, cpumask_first_zero(&mask_empty), MASK_MSG(&mask_empty)); |
89 | KUNIT_EXPECT_LE_MSG(test, nr_cpu_ids, cpumask_first_zero(cpu_possible_mask), | |
90 | MASK_MSG(cpu_possible_mask)); | |
c41e8866 SV |
91 | } |
92 | ||
93 | static void test_cpumask_last(struct kunit *test) | |
94 | { | |
bf541358 SV |
95 | KUNIT_EXPECT_LE_MSG(test, nr_cpumask_bits, cpumask_last(&mask_empty), |
96 | MASK_MSG(&mask_empty)); | |
97 | KUNIT_EXPECT_EQ_MSG(test, nr_cpu_ids - 1, cpumask_last(cpu_possible_mask), | |
98 | MASK_MSG(cpu_possible_mask)); | |
c41e8866 SV |
99 | } |
100 | ||
101 | static void test_cpumask_next(struct kunit *test) | |
102 | { | |
bf541358 SV |
103 | KUNIT_EXPECT_EQ_MSG(test, 0, cpumask_next_zero(-1, &mask_empty), MASK_MSG(&mask_empty)); |
104 | KUNIT_EXPECT_LE_MSG(test, nr_cpu_ids, cpumask_next_zero(-1, cpu_possible_mask), | |
105 | MASK_MSG(cpu_possible_mask)); | |
c41e8866 | 106 | |
bf541358 SV |
107 | KUNIT_EXPECT_LE_MSG(test, nr_cpu_ids, cpumask_next(-1, &mask_empty), |
108 | MASK_MSG(&mask_empty)); | |
109 | KUNIT_EXPECT_EQ_MSG(test, 0, cpumask_next(-1, cpu_possible_mask), | |
110 | MASK_MSG(cpu_possible_mask)); | |
c41e8866 SV |
111 | } |
112 | ||
113 | static void test_cpumask_iterators(struct kunit *test) | |
114 | { | |
115 | EXPECT_FOR_EACH_CPU_EQ(test, &mask_empty); | |
116 | EXPECT_FOR_EACH_CPU_NOT_EQ(test, &mask_empty); | |
117 | EXPECT_FOR_EACH_CPU_WRAP_EQ(test, &mask_empty); | |
49937cd1 VS |
118 | EXPECT_FOR_EACH_CPU_OP_EQ(test, and, &mask_empty, &mask_empty); |
119 | EXPECT_FOR_EACH_CPU_OP_EQ(test, and, cpu_possible_mask, &mask_empty); | |
120 | EXPECT_FOR_EACH_CPU_OP_EQ(test, andnot, &mask_empty, &mask_empty); | |
c41e8866 SV |
121 | |
122 | EXPECT_FOR_EACH_CPU_EQ(test, cpu_possible_mask); | |
123 | EXPECT_FOR_EACH_CPU_NOT_EQ(test, cpu_possible_mask); | |
124 | EXPECT_FOR_EACH_CPU_WRAP_EQ(test, cpu_possible_mask); | |
49937cd1 VS |
125 | EXPECT_FOR_EACH_CPU_OP_EQ(test, and, cpu_possible_mask, cpu_possible_mask); |
126 | EXPECT_FOR_EACH_CPU_OP_EQ(test, andnot, cpu_possible_mask, &mask_empty); | |
c41e8866 SV |
127 | } |
128 | ||
129 | static void test_cpumask_iterators_builtin(struct kunit *test) | |
130 | { | |
131 | EXPECT_FOR_EACH_CPU_BUILTIN_EQ(test, possible); | |
132 | ||
133 | /* Ensure the dynamic masks are stable while running the tests */ | |
134 | cpu_hotplug_disable(); | |
135 | ||
136 | EXPECT_FOR_EACH_CPU_BUILTIN_EQ(test, online); | |
137 | EXPECT_FOR_EACH_CPU_BUILTIN_EQ(test, present); | |
138 | ||
139 | cpu_hotplug_enable(); | |
140 | } | |
141 | ||
142 | static int test_cpumask_init(struct kunit *test) | |
143 | { | |
144 | cpumask_clear(&mask_empty); | |
145 | cpumask_setall(&mask_all); | |
146 | ||
147 | return 0; | |
148 | } | |
149 | ||
150 | static struct kunit_case test_cpumask_cases[] = { | |
151 | KUNIT_CASE(test_cpumask_weight), | |
152 | KUNIT_CASE(test_cpumask_first), | |
153 | KUNIT_CASE(test_cpumask_last), | |
154 | KUNIT_CASE(test_cpumask_next), | |
155 | KUNIT_CASE(test_cpumask_iterators), | |
156 | KUNIT_CASE(test_cpumask_iterators_builtin), | |
157 | {} | |
158 | }; | |
159 | ||
160 | static struct kunit_suite test_cpumask_suite = { | |
161 | .name = "cpumask", | |
162 | .init = test_cpumask_init, | |
163 | .test_cases = test_cpumask_cases, | |
164 | }; | |
165 | kunit_test_suite(test_cpumask_suite); | |
166 | ||
167 | MODULE_LICENSE("GPL"); |