Sander Vanheule | c41e886 | 2022-07-02 18:08:26 +0200 | [diff] [blame] | 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 | |
Sander Vanheule | bf54135 | 2022-08-23 08:12:22 +0200 | [diff] [blame] | 12 | #define MASK_MSG(m) \ |
| 13 | "%s contains %sCPUs %*pbl", #m, (cpumask_weight(m) ? "" : "no "), \ |
| 14 | nr_cpumask_bits, cpumask_bits(m) |
| 15 | |
Sander Vanheule | c41e886 | 2022-07-02 18:08:26 +0200 | [diff] [blame] | 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++; \ |
Sander Vanheule | bf54135 | 2022-08-23 08:12:22 +0200 | [diff] [blame] | 23 | KUNIT_EXPECT_EQ_MSG((test), mask_weight, iter, MASK_MSG(mask)); \ |
Sander Vanheule | c41e886 | 2022-07-02 18:08:26 +0200 | [diff] [blame] | 24 | } while (0) |
| 25 | |
Valentin Schneider | 49937cd | 2022-10-03 16:34:19 +0100 | [diff] [blame] | 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 | |
Sander Vanheule | c41e886 | 2022-07-02 18:08:26 +0200 | [diff] [blame] | 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++; \ |
Sander Vanheule | bf54135 | 2022-08-23 08:12:22 +0200 | [diff] [blame] | 46 | KUNIT_EXPECT_EQ_MSG((test), mask_weight, iter, MASK_MSG(mask)); \ |
Sander Vanheule | c41e886 | 2022-07-02 18:08:26 +0200 | [diff] [blame] | 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++; \ |
Sander Vanheule | bf54135 | 2022-08-23 08:12:22 +0200 | [diff] [blame] | 55 | KUNIT_EXPECT_EQ_MSG((test), mask_weight, iter, MASK_MSG(cpu_##name##_mask)); \ |
Sander Vanheule | c41e886 | 2022-07-02 18:08:26 +0200 | [diff] [blame] | 56 | } while (0) |
| 57 | |
| 58 | static cpumask_t mask_empty; |
| 59 | static cpumask_t mask_all; |
Valentin Schneider | 49937cd | 2022-10-03 16:34:19 +0100 | [diff] [blame] | 60 | static cpumask_t mask_tmp; |
Sander Vanheule | c41e886 | 2022-07-02 18:08:26 +0200 | [diff] [blame] | 61 | |
| 62 | static void test_cpumask_weight(struct kunit *test) |
| 63 | { |
Sander Vanheule | bf54135 | 2022-08-23 08:12:22 +0200 | [diff] [blame] | 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)); |
Sander Vanheule | c41e886 | 2022-07-02 18:08:26 +0200 | [diff] [blame] | 66 | |
Sander Vanheule | bf54135 | 2022-08-23 08:12:22 +0200 | [diff] [blame] | 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)); |
Linus Torvalds | 596ff4a | 2023-03-04 13:35:43 -0800 | [diff] [blame] | 70 | KUNIT_EXPECT_EQ_MSG(test, nr_cpu_ids, cpumask_weight(&mask_all), MASK_MSG(&mask_all)); |
Sander Vanheule | c41e886 | 2022-07-02 18:08:26 +0200 | [diff] [blame] | 71 | } |
| 72 | |
| 73 | static void test_cpumask_first(struct kunit *test) |
| 74 | { |
Sander Vanheule | bf54135 | 2022-08-23 08:12:22 +0200 | [diff] [blame] | 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)); |
Sander Vanheule | c41e886 | 2022-07-02 18:08:26 +0200 | [diff] [blame] | 77 | |
Sander Vanheule | bf54135 | 2022-08-23 08:12:22 +0200 | [diff] [blame] | 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)); |
Sander Vanheule | c41e886 | 2022-07-02 18:08:26 +0200 | [diff] [blame] | 81 | } |
| 82 | |
| 83 | static void test_cpumask_last(struct kunit *test) |
| 84 | { |
Sander Vanheule | bf54135 | 2022-08-23 08:12:22 +0200 | [diff] [blame] | 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)); |
Sander Vanheule | c41e886 | 2022-07-02 18:08:26 +0200 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | static void test_cpumask_next(struct kunit *test) |
| 92 | { |
Sander Vanheule | bf54135 | 2022-08-23 08:12:22 +0200 | [diff] [blame] | 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)); |
Sander Vanheule | c41e886 | 2022-07-02 18:08:26 +0200 | [diff] [blame] | 96 | |
Sander Vanheule | bf54135 | 2022-08-23 08:12:22 +0200 | [diff] [blame] | 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)); |
Sander Vanheule | c41e886 | 2022-07-02 18:08:26 +0200 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | static void test_cpumask_iterators(struct kunit *test) |
| 104 | { |
| 105 | EXPECT_FOR_EACH_CPU_EQ(test, &mask_empty); |
Sander Vanheule | c41e886 | 2022-07-02 18:08:26 +0200 | [diff] [blame] | 106 | EXPECT_FOR_EACH_CPU_WRAP_EQ(test, &mask_empty); |
Valentin Schneider | 49937cd | 2022-10-03 16:34:19 +0100 | [diff] [blame] | 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); |
Sander Vanheule | c41e886 | 2022-07-02 18:08:26 +0200 | [diff] [blame] | 110 | |
| 111 | EXPECT_FOR_EACH_CPU_EQ(test, cpu_possible_mask); |
Sander Vanheule | c41e886 | 2022-07-02 18:08:26 +0200 | [diff] [blame] | 112 | EXPECT_FOR_EACH_CPU_WRAP_EQ(test, cpu_possible_mask); |
Valentin Schneider | 49937cd | 2022-10-03 16:34:19 +0100 | [diff] [blame] | 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); |
Sander Vanheule | c41e886 | 2022-07-02 18:08:26 +0200 | [diff] [blame] | 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"); |