Linux/lib/kunit/resource.c

Version: ~ [ linux-6.12-rc7 ] ~ [ linux-6.11.7 ] ~ [ linux-6.10.14 ] ~ [ linux-6.9.12 ] ~ [ linux-6.8.12 ] ~ [ linux-6.7.12 ] ~ [ linux-6.6.60 ] ~ [ linux-6.5.13 ] ~ [ linux-6.4.16 ] ~ [ linux-6.3.13 ] ~ [ linux-6.2.16 ] ~ [ linux-6.1.116 ] ~ [ linux-6.0.19 ] ~ [ linux-5.19.17 ] ~ [ linux-5.18.19 ] ~ [ linux-5.17.15 ] ~ [ linux-5.16.20 ] ~ [ linux-5.15.171 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.229 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.285 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.323 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.336 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.337 ] ~ [ linux-4.4.302 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.12 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

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1 // SPDX-License-Identifier: GPL-2.0 1 // SPDX-License-Identifier: GPL-2.0 2 /* 2 /* 3 * KUnit resource API for test managed resourc 3 * KUnit resource API for test managed resources (allocations, etc.). 4 * 4 * 5 * Copyright (C) 2022, Google LLC. 5 * Copyright (C) 2022, Google LLC. 6 * Author: Daniel Latypov <dlatypov@google.com 6 * Author: Daniel Latypov <dlatypov@google.com> 7 */ 7 */ 8 8 9 #include <kunit/resource.h> 9 #include <kunit/resource.h> 10 #include <kunit/test.h> 10 #include <kunit/test.h> 11 #include <linux/kref.h> 11 #include <linux/kref.h> 12 12 13 /* 13 /* 14 * Used for static resources and when a kunit_ 14 * Used for static resources and when a kunit_resource * has been created by 15 * kunit_alloc_resource(). When an init funct 15 * kunit_alloc_resource(). When an init function is supplied, @data is passed 16 * into the init function; otherwise, we simpl 16 * into the init function; otherwise, we simply set the resource data field to 17 * the data value passed in. Doesn't initializ 17 * the data value passed in. Doesn't initialize res->should_kfree. 18 */ 18 */ 19 int __kunit_add_resource(struct kunit *test, 19 int __kunit_add_resource(struct kunit *test, 20 kunit_resource_init_t 20 kunit_resource_init_t init, 21 kunit_resource_free_t 21 kunit_resource_free_t free, 22 struct kunit_resource 22 struct kunit_resource *res, 23 void *data) 23 void *data) 24 { 24 { 25 int ret = 0; 25 int ret = 0; 26 unsigned long flags; 26 unsigned long flags; 27 27 28 res->free = free; 28 res->free = free; 29 kref_init(&res->refcount); 29 kref_init(&res->refcount); 30 30 31 if (init) { 31 if (init) { 32 ret = init(res, data); 32 ret = init(res, data); 33 if (ret) 33 if (ret) 34 return ret; 34 return ret; 35 } else { 35 } else { 36 res->data = data; 36 res->data = data; 37 } 37 } 38 38 39 spin_lock_irqsave(&test->lock, flags); 39 spin_lock_irqsave(&test->lock, flags); 40 list_add_tail(&res->node, &test->resou 40 list_add_tail(&res->node, &test->resources); 41 /* refcount for list is established by 41 /* refcount for list is established by kref_init() */ 42 spin_unlock_irqrestore(&test->lock, fl 42 spin_unlock_irqrestore(&test->lock, flags); 43 43 44 return ret; 44 return ret; 45 } 45 } 46 EXPORT_SYMBOL_GPL(__kunit_add_resource); 46 EXPORT_SYMBOL_GPL(__kunit_add_resource); 47 47 48 void kunit_remove_resource(struct kunit *test, 48 void kunit_remove_resource(struct kunit *test, struct kunit_resource *res) 49 { 49 { 50 unsigned long flags; 50 unsigned long flags; 51 bool was_linked; 51 bool was_linked; 52 52 53 spin_lock_irqsave(&test->lock, flags); 53 spin_lock_irqsave(&test->lock, flags); 54 was_linked = !list_empty(&res->node); 54 was_linked = !list_empty(&res->node); 55 list_del_init(&res->node); 55 list_del_init(&res->node); 56 spin_unlock_irqrestore(&test->lock, fl 56 spin_unlock_irqrestore(&test->lock, flags); 57 57 58 if (was_linked) 58 if (was_linked) 59 kunit_put_resource(res); 59 kunit_put_resource(res); 60 } 60 } 61 EXPORT_SYMBOL_GPL(kunit_remove_resource); 61 EXPORT_SYMBOL_GPL(kunit_remove_resource); 62 62 63 int kunit_destroy_resource(struct kunit *test, 63 int kunit_destroy_resource(struct kunit *test, kunit_resource_match_t match, 64 void *match_data) 64 void *match_data) 65 { 65 { 66 struct kunit_resource *res = kunit_fin 66 struct kunit_resource *res = kunit_find_resource(test, match, 67 67 match_data); 68 68 69 if (!res) 69 if (!res) 70 return -ENOENT; 70 return -ENOENT; 71 71 72 kunit_remove_resource(test, res); 72 kunit_remove_resource(test, res); 73 73 74 /* We have a reference also via _find( 74 /* We have a reference also via _find(); drop it. */ 75 kunit_put_resource(res); 75 kunit_put_resource(res); 76 76 77 return 0; 77 return 0; 78 } 78 } 79 EXPORT_SYMBOL_GPL(kunit_destroy_resource); 79 EXPORT_SYMBOL_GPL(kunit_destroy_resource); 80 << 81 struct kunit_action_ctx { << 82 struct kunit_resource res; << 83 kunit_action_t *func; << 84 void *ctx; << 85 }; << 86 << 87 static void __kunit_action_free(struct kunit_r << 88 { << 89 struct kunit_action_ctx *action_ctx = << 90 << 91 action_ctx->func(action_ctx->ctx); << 92 } << 93 << 94 << 95 int kunit_add_action(struct kunit *test, void << 96 { << 97 struct kunit_action_ctx *action_ctx; << 98 << 99 KUNIT_ASSERT_NOT_NULL_MSG(test, action << 100 << 101 action_ctx = kzalloc(sizeof(*action_ct << 102 if (!action_ctx) << 103 return -ENOMEM; << 104 << 105 action_ctx->func = action; << 106 action_ctx->ctx = ctx; << 107 << 108 action_ctx->res.should_kfree = true; << 109 /* As init is NULL, this cannot fail. << 110 __kunit_add_resource(test, NULL, __kun << 111 << 112 return 0; << 113 } << 114 EXPORT_SYMBOL_GPL(kunit_add_action); << 115 << 116 int kunit_add_action_or_reset(struct kunit *te << 117 void *ctx) << 118 { << 119 int res = kunit_add_action(test, actio << 120 << 121 if (res) << 122 action(ctx); << 123 return res; << 124 } << 125 EXPORT_SYMBOL_GPL(kunit_add_action_or_reset); << 126 << 127 static bool __kunit_action_match(struct kunit << 128 struct kunit_r << 129 { << 130 struct kunit_action_ctx *match_ctx = ( << 131 struct kunit_action_ctx *res_ctx = con << 132 << 133 /* Make sure this is a free function. << 134 if (res->free != __kunit_action_free) << 135 return false; << 136 << 137 /* Both the function and context data << 138 return (match_ctx->func == res_ctx->fu << 139 } << 140 << 141 void kunit_remove_action(struct kunit *test, << 142 kunit_action_t *action << 143 void *ctx) << 144 { << 145 struct kunit_action_ctx match_ctx; << 146 struct kunit_resource *res; << 147 << 148 match_ctx.func = action; << 149 match_ctx.ctx = ctx; << 150 << 151 res = kunit_find_resource(test, __kuni << 152 if (res) { << 153 /* Remove the free function so << 154 res->free = NULL; << 155 kunit_remove_resource(test, re << 156 kunit_put_resource(res); << 157 } << 158 } << 159 EXPORT_SYMBOL_GPL(kunit_remove_action); << 160 << 161 void kunit_release_action(struct kunit *test, << 162 kunit_action_t *actio << 163 void *ctx) << 164 { << 165 struct kunit_action_ctx match_ctx; << 166 struct kunit_resource *res; << 167 << 168 match_ctx.func = action; << 169 match_ctx.ctx = ctx; << 170 << 171 res = kunit_find_resource(test, __kuni << 172 if (res) { << 173 kunit_remove_resource(test, re << 174 /* We have to put() this here, << 175 kunit_put_resource(res); << 176 } << 177 } << 178 EXPORT_SYMBOL_GPL(kunit_release_action); << 179 80

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TOMOYO Linux Cross Reference
Linux/lib/kunit/resource.c

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Differences between /lib/kunit/resource.c (Version linux-6.12-rc7) and /lib/kunit/resource.c (Version linux-5.19.17)

TOMOYO Linux Cross Reference Linux/lib/kunit/resource.c

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Differences between /lib/kunit/resource.c (Version linux-6.12-rc7) and /lib/kunit/resource.c (Version linux-5.19.17)

TOMOYO Linux Cross Reference
Linux/lib/kunit/resource.c