David Gow | ea2dd7c | 2019-10-24 15:46:31 -0700 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* |
| 3 | * KUnit test for the Kernel Linked-list structures. |
| 4 | * |
| 5 | * Copyright (C) 2019, Google LLC. |
| 6 | * Author: David Gow <davidgow@google.com> |
| 7 | */ |
| 8 | #include <kunit/test.h> |
| 9 | |
| 10 | #include <linux/list.h> |
| 11 | |
| 12 | struct list_test_struct { |
| 13 | int data; |
| 14 | struct list_head list; |
| 15 | }; |
| 16 | |
| 17 | static void list_test_list_init(struct kunit *test) |
| 18 | { |
| 19 | /* Test the different ways of initialising a list. */ |
| 20 | struct list_head list1 = LIST_HEAD_INIT(list1); |
| 21 | struct list_head list2; |
| 22 | LIST_HEAD(list3); |
| 23 | struct list_head *list4; |
| 24 | struct list_head *list5; |
| 25 | |
| 26 | INIT_LIST_HEAD(&list2); |
| 27 | |
| 28 | list4 = kzalloc(sizeof(*list4), GFP_KERNEL | __GFP_NOFAIL); |
| 29 | INIT_LIST_HEAD(list4); |
| 30 | |
| 31 | list5 = kmalloc(sizeof(*list5), GFP_KERNEL | __GFP_NOFAIL); |
| 32 | memset(list5, 0xFF, sizeof(*list5)); |
| 33 | INIT_LIST_HEAD(list5); |
| 34 | |
| 35 | /* list_empty_careful() checks both next and prev. */ |
| 36 | KUNIT_EXPECT_TRUE(test, list_empty_careful(&list1)); |
| 37 | KUNIT_EXPECT_TRUE(test, list_empty_careful(&list2)); |
| 38 | KUNIT_EXPECT_TRUE(test, list_empty_careful(&list3)); |
| 39 | KUNIT_EXPECT_TRUE(test, list_empty_careful(list4)); |
| 40 | KUNIT_EXPECT_TRUE(test, list_empty_careful(list5)); |
| 41 | |
| 42 | kfree(list4); |
| 43 | kfree(list5); |
| 44 | } |
| 45 | |
| 46 | static void list_test_list_add(struct kunit *test) |
| 47 | { |
| 48 | struct list_head a, b; |
| 49 | LIST_HEAD(list); |
| 50 | |
| 51 | list_add(&a, &list); |
| 52 | list_add(&b, &list); |
| 53 | |
| 54 | /* should be [list] -> b -> a */ |
| 55 | KUNIT_EXPECT_PTR_EQ(test, list.next, &b); |
| 56 | KUNIT_EXPECT_PTR_EQ(test, b.prev, &list); |
| 57 | KUNIT_EXPECT_PTR_EQ(test, b.next, &a); |
| 58 | } |
| 59 | |
| 60 | static void list_test_list_add_tail(struct kunit *test) |
| 61 | { |
| 62 | struct list_head a, b; |
| 63 | LIST_HEAD(list); |
| 64 | |
| 65 | list_add_tail(&a, &list); |
| 66 | list_add_tail(&b, &list); |
| 67 | |
| 68 | /* should be [list] -> a -> b */ |
| 69 | KUNIT_EXPECT_PTR_EQ(test, list.next, &a); |
| 70 | KUNIT_EXPECT_PTR_EQ(test, a.prev, &list); |
| 71 | KUNIT_EXPECT_PTR_EQ(test, a.next, &b); |
| 72 | } |
| 73 | |
| 74 | static void list_test_list_del(struct kunit *test) |
| 75 | { |
| 76 | struct list_head a, b; |
| 77 | LIST_HEAD(list); |
| 78 | |
| 79 | list_add_tail(&a, &list); |
| 80 | list_add_tail(&b, &list); |
| 81 | |
| 82 | /* before: [list] -> a -> b */ |
| 83 | list_del(&a); |
| 84 | |
| 85 | /* now: [list] -> b */ |
| 86 | KUNIT_EXPECT_PTR_EQ(test, list.next, &b); |
| 87 | KUNIT_EXPECT_PTR_EQ(test, b.prev, &list); |
| 88 | } |
| 89 | |
| 90 | static void list_test_list_replace(struct kunit *test) |
| 91 | { |
| 92 | struct list_head a_old, a_new, b; |
| 93 | LIST_HEAD(list); |
| 94 | |
| 95 | list_add_tail(&a_old, &list); |
| 96 | list_add_tail(&b, &list); |
| 97 | |
| 98 | /* before: [list] -> a_old -> b */ |
| 99 | list_replace(&a_old, &a_new); |
| 100 | |
| 101 | /* now: [list] -> a_new -> b */ |
| 102 | KUNIT_EXPECT_PTR_EQ(test, list.next, &a_new); |
| 103 | KUNIT_EXPECT_PTR_EQ(test, b.prev, &a_new); |
| 104 | } |
| 105 | |
| 106 | static void list_test_list_replace_init(struct kunit *test) |
| 107 | { |
| 108 | struct list_head a_old, a_new, b; |
| 109 | LIST_HEAD(list); |
| 110 | |
| 111 | list_add_tail(&a_old, &list); |
| 112 | list_add_tail(&b, &list); |
| 113 | |
| 114 | /* before: [list] -> a_old -> b */ |
| 115 | list_replace_init(&a_old, &a_new); |
| 116 | |
| 117 | /* now: [list] -> a_new -> b */ |
| 118 | KUNIT_EXPECT_PTR_EQ(test, list.next, &a_new); |
| 119 | KUNIT_EXPECT_PTR_EQ(test, b.prev, &a_new); |
| 120 | |
| 121 | /* check a_old is empty (initialized) */ |
| 122 | KUNIT_EXPECT_TRUE(test, list_empty_careful(&a_old)); |
| 123 | } |
| 124 | |
| 125 | static void list_test_list_swap(struct kunit *test) |
| 126 | { |
| 127 | struct list_head a, b; |
| 128 | LIST_HEAD(list); |
| 129 | |
| 130 | list_add_tail(&a, &list); |
| 131 | list_add_tail(&b, &list); |
| 132 | |
| 133 | /* before: [list] -> a -> b */ |
| 134 | list_swap(&a, &b); |
| 135 | |
| 136 | /* after: [list] -> b -> a */ |
| 137 | KUNIT_EXPECT_PTR_EQ(test, &b, list.next); |
| 138 | KUNIT_EXPECT_PTR_EQ(test, &a, list.prev); |
| 139 | |
| 140 | KUNIT_EXPECT_PTR_EQ(test, &a, b.next); |
| 141 | KUNIT_EXPECT_PTR_EQ(test, &list, b.prev); |
| 142 | |
| 143 | KUNIT_EXPECT_PTR_EQ(test, &list, a.next); |
| 144 | KUNIT_EXPECT_PTR_EQ(test, &b, a.prev); |
| 145 | } |
| 146 | |
| 147 | static void list_test_list_del_init(struct kunit *test) |
| 148 | { |
| 149 | struct list_head a, b; |
| 150 | LIST_HEAD(list); |
| 151 | |
| 152 | list_add_tail(&a, &list); |
| 153 | list_add_tail(&b, &list); |
| 154 | |
| 155 | /* before: [list] -> a -> b */ |
| 156 | list_del_init(&a); |
| 157 | /* after: [list] -> b, a initialised */ |
| 158 | |
| 159 | KUNIT_EXPECT_PTR_EQ(test, list.next, &b); |
| 160 | KUNIT_EXPECT_PTR_EQ(test, b.prev, &list); |
| 161 | KUNIT_EXPECT_TRUE(test, list_empty_careful(&a)); |
| 162 | } |
| 163 | |
| 164 | static void list_test_list_move(struct kunit *test) |
| 165 | { |
| 166 | struct list_head a, b; |
| 167 | LIST_HEAD(list1); |
| 168 | LIST_HEAD(list2); |
| 169 | |
| 170 | list_add_tail(&a, &list1); |
| 171 | list_add_tail(&b, &list2); |
| 172 | |
| 173 | /* before: [list1] -> a, [list2] -> b */ |
| 174 | list_move(&a, &list2); |
| 175 | /* after: [list1] empty, [list2] -> a -> b */ |
| 176 | |
| 177 | KUNIT_EXPECT_TRUE(test, list_empty(&list1)); |
| 178 | |
| 179 | KUNIT_EXPECT_PTR_EQ(test, &a, list2.next); |
| 180 | KUNIT_EXPECT_PTR_EQ(test, &b, a.next); |
| 181 | } |
| 182 | |
| 183 | static void list_test_list_move_tail(struct kunit *test) |
| 184 | { |
| 185 | struct list_head a, b; |
| 186 | LIST_HEAD(list1); |
| 187 | LIST_HEAD(list2); |
| 188 | |
| 189 | list_add_tail(&a, &list1); |
| 190 | list_add_tail(&b, &list2); |
| 191 | |
| 192 | /* before: [list1] -> a, [list2] -> b */ |
| 193 | list_move_tail(&a, &list2); |
| 194 | /* after: [list1] empty, [list2] -> b -> a */ |
| 195 | |
| 196 | KUNIT_EXPECT_TRUE(test, list_empty(&list1)); |
| 197 | |
| 198 | KUNIT_EXPECT_PTR_EQ(test, &b, list2.next); |
| 199 | KUNIT_EXPECT_PTR_EQ(test, &a, b.next); |
| 200 | } |
| 201 | |
| 202 | static void list_test_list_bulk_move_tail(struct kunit *test) |
| 203 | { |
| 204 | struct list_head a, b, c, d, x, y; |
| 205 | struct list_head *list1_values[] = { &x, &b, &c, &y }; |
| 206 | struct list_head *list2_values[] = { &a, &d }; |
| 207 | struct list_head *ptr; |
| 208 | LIST_HEAD(list1); |
| 209 | LIST_HEAD(list2); |
| 210 | int i = 0; |
| 211 | |
| 212 | list_add_tail(&x, &list1); |
| 213 | list_add_tail(&y, &list1); |
| 214 | |
| 215 | list_add_tail(&a, &list2); |
| 216 | list_add_tail(&b, &list2); |
| 217 | list_add_tail(&c, &list2); |
| 218 | list_add_tail(&d, &list2); |
| 219 | |
| 220 | /* before: [list1] -> x -> y, [list2] -> a -> b -> c -> d */ |
| 221 | list_bulk_move_tail(&y, &b, &c); |
| 222 | /* after: [list1] -> x -> b -> c -> y, [list2] -> a -> d */ |
| 223 | |
| 224 | list_for_each(ptr, &list1) { |
| 225 | KUNIT_EXPECT_PTR_EQ(test, ptr, list1_values[i]); |
| 226 | i++; |
| 227 | } |
| 228 | KUNIT_EXPECT_EQ(test, i, 4); |
| 229 | i = 0; |
| 230 | list_for_each(ptr, &list2) { |
| 231 | KUNIT_EXPECT_PTR_EQ(test, ptr, list2_values[i]); |
| 232 | i++; |
| 233 | } |
| 234 | KUNIT_EXPECT_EQ(test, i, 2); |
| 235 | } |
| 236 | |
| 237 | static void list_test_list_is_first(struct kunit *test) |
| 238 | { |
| 239 | struct list_head a, b; |
| 240 | LIST_HEAD(list); |
| 241 | |
| 242 | list_add_tail(&a, &list); |
| 243 | list_add_tail(&b, &list); |
| 244 | |
| 245 | KUNIT_EXPECT_TRUE(test, list_is_first(&a, &list)); |
| 246 | KUNIT_EXPECT_FALSE(test, list_is_first(&b, &list)); |
| 247 | } |
| 248 | |
| 249 | static void list_test_list_is_last(struct kunit *test) |
| 250 | { |
| 251 | struct list_head a, b; |
| 252 | LIST_HEAD(list); |
| 253 | |
| 254 | list_add_tail(&a, &list); |
| 255 | list_add_tail(&b, &list); |
| 256 | |
| 257 | KUNIT_EXPECT_FALSE(test, list_is_last(&a, &list)); |
| 258 | KUNIT_EXPECT_TRUE(test, list_is_last(&b, &list)); |
| 259 | } |
| 260 | |
| 261 | static void list_test_list_empty(struct kunit *test) |
| 262 | { |
| 263 | struct list_head a; |
| 264 | LIST_HEAD(list1); |
| 265 | LIST_HEAD(list2); |
| 266 | |
| 267 | list_add_tail(&a, &list1); |
| 268 | |
| 269 | KUNIT_EXPECT_FALSE(test, list_empty(&list1)); |
| 270 | KUNIT_EXPECT_TRUE(test, list_empty(&list2)); |
| 271 | } |
| 272 | |
| 273 | static void list_test_list_empty_careful(struct kunit *test) |
| 274 | { |
| 275 | /* This test doesn't check correctness under concurrent access */ |
| 276 | struct list_head a; |
| 277 | LIST_HEAD(list1); |
| 278 | LIST_HEAD(list2); |
| 279 | |
| 280 | list_add_tail(&a, &list1); |
| 281 | |
| 282 | KUNIT_EXPECT_FALSE(test, list_empty_careful(&list1)); |
| 283 | KUNIT_EXPECT_TRUE(test, list_empty_careful(&list2)); |
| 284 | } |
| 285 | |
| 286 | static void list_test_list_rotate_left(struct kunit *test) |
| 287 | { |
| 288 | struct list_head a, b; |
| 289 | LIST_HEAD(list); |
| 290 | |
| 291 | list_add_tail(&a, &list); |
| 292 | list_add_tail(&b, &list); |
| 293 | |
| 294 | /* before: [list] -> a -> b */ |
| 295 | list_rotate_left(&list); |
| 296 | /* after: [list] -> b -> a */ |
| 297 | |
| 298 | KUNIT_EXPECT_PTR_EQ(test, list.next, &b); |
| 299 | KUNIT_EXPECT_PTR_EQ(test, b.prev, &list); |
| 300 | KUNIT_EXPECT_PTR_EQ(test, b.next, &a); |
| 301 | } |
| 302 | |
| 303 | static void list_test_list_rotate_to_front(struct kunit *test) |
| 304 | { |
| 305 | struct list_head a, b, c, d; |
| 306 | struct list_head *list_values[] = { &c, &d, &a, &b }; |
| 307 | struct list_head *ptr; |
| 308 | LIST_HEAD(list); |
| 309 | int i = 0; |
| 310 | |
| 311 | list_add_tail(&a, &list); |
| 312 | list_add_tail(&b, &list); |
| 313 | list_add_tail(&c, &list); |
| 314 | list_add_tail(&d, &list); |
| 315 | |
| 316 | /* before: [list] -> a -> b -> c -> d */ |
| 317 | list_rotate_to_front(&c, &list); |
| 318 | /* after: [list] -> c -> d -> a -> b */ |
| 319 | |
| 320 | list_for_each(ptr, &list) { |
| 321 | KUNIT_EXPECT_PTR_EQ(test, ptr, list_values[i]); |
| 322 | i++; |
| 323 | } |
| 324 | KUNIT_EXPECT_EQ(test, i, 4); |
| 325 | } |
| 326 | |
| 327 | static void list_test_list_is_singular(struct kunit *test) |
| 328 | { |
| 329 | struct list_head a, b; |
| 330 | LIST_HEAD(list); |
| 331 | |
| 332 | /* [list] empty */ |
| 333 | KUNIT_EXPECT_FALSE(test, list_is_singular(&list)); |
| 334 | |
| 335 | list_add_tail(&a, &list); |
| 336 | |
| 337 | /* [list] -> a */ |
| 338 | KUNIT_EXPECT_TRUE(test, list_is_singular(&list)); |
| 339 | |
| 340 | list_add_tail(&b, &list); |
| 341 | |
| 342 | /* [list] -> a -> b */ |
| 343 | KUNIT_EXPECT_FALSE(test, list_is_singular(&list)); |
| 344 | } |
| 345 | |
| 346 | static void list_test_list_cut_position(struct kunit *test) |
| 347 | { |
| 348 | struct list_head entries[3], *cur; |
| 349 | LIST_HEAD(list1); |
| 350 | LIST_HEAD(list2); |
| 351 | int i = 0; |
| 352 | |
| 353 | list_add_tail(&entries[0], &list1); |
| 354 | list_add_tail(&entries[1], &list1); |
| 355 | list_add_tail(&entries[2], &list1); |
| 356 | |
| 357 | /* before: [list1] -> entries[0] -> entries[1] -> entries[2] */ |
| 358 | list_cut_position(&list2, &list1, &entries[1]); |
| 359 | /* after: [list2] -> entries[0] -> entries[1], [list1] -> entries[2] */ |
| 360 | |
| 361 | list_for_each(cur, &list2) { |
| 362 | KUNIT_EXPECT_PTR_EQ(test, cur, &entries[i]); |
| 363 | i++; |
| 364 | } |
| 365 | |
| 366 | KUNIT_EXPECT_EQ(test, i, 2); |
| 367 | |
| 368 | list_for_each(cur, &list1) { |
| 369 | KUNIT_EXPECT_PTR_EQ(test, cur, &entries[i]); |
| 370 | i++; |
| 371 | } |
| 372 | } |
| 373 | |
| 374 | static void list_test_list_cut_before(struct kunit *test) |
| 375 | { |
| 376 | struct list_head entries[3], *cur; |
| 377 | LIST_HEAD(list1); |
| 378 | LIST_HEAD(list2); |
| 379 | int i = 0; |
| 380 | |
| 381 | list_add_tail(&entries[0], &list1); |
| 382 | list_add_tail(&entries[1], &list1); |
| 383 | list_add_tail(&entries[2], &list1); |
| 384 | |
| 385 | /* before: [list1] -> entries[0] -> entries[1] -> entries[2] */ |
| 386 | list_cut_before(&list2, &list1, &entries[1]); |
| 387 | /* after: [list2] -> entries[0], [list1] -> entries[1] -> entries[2] */ |
| 388 | |
| 389 | list_for_each(cur, &list2) { |
| 390 | KUNIT_EXPECT_PTR_EQ(test, cur, &entries[i]); |
| 391 | i++; |
| 392 | } |
| 393 | |
| 394 | KUNIT_EXPECT_EQ(test, i, 1); |
| 395 | |
| 396 | list_for_each(cur, &list1) { |
| 397 | KUNIT_EXPECT_PTR_EQ(test, cur, &entries[i]); |
| 398 | i++; |
| 399 | } |
| 400 | } |
| 401 | |
| 402 | static void list_test_list_splice(struct kunit *test) |
| 403 | { |
| 404 | struct list_head entries[5], *cur; |
| 405 | LIST_HEAD(list1); |
| 406 | LIST_HEAD(list2); |
| 407 | int i = 0; |
| 408 | |
| 409 | list_add_tail(&entries[0], &list1); |
| 410 | list_add_tail(&entries[1], &list1); |
| 411 | list_add_tail(&entries[2], &list2); |
| 412 | list_add_tail(&entries[3], &list2); |
| 413 | list_add_tail(&entries[4], &list1); |
| 414 | |
| 415 | /* before: [list1]->e[0]->e[1]->e[4], [list2]->e[2]->e[3] */ |
| 416 | list_splice(&list2, &entries[1]); |
| 417 | /* after: [list1]->e[0]->e[1]->e[2]->e[3]->e[4], [list2] uninit */ |
| 418 | |
| 419 | list_for_each(cur, &list1) { |
| 420 | KUNIT_EXPECT_PTR_EQ(test, cur, &entries[i]); |
| 421 | i++; |
| 422 | } |
| 423 | |
| 424 | KUNIT_EXPECT_EQ(test, i, 5); |
| 425 | } |
| 426 | |
| 427 | static void list_test_list_splice_tail(struct kunit *test) |
| 428 | { |
| 429 | struct list_head entries[5], *cur; |
| 430 | LIST_HEAD(list1); |
| 431 | LIST_HEAD(list2); |
| 432 | int i = 0; |
| 433 | |
| 434 | list_add_tail(&entries[0], &list1); |
| 435 | list_add_tail(&entries[1], &list1); |
| 436 | list_add_tail(&entries[2], &list2); |
| 437 | list_add_tail(&entries[3], &list2); |
| 438 | list_add_tail(&entries[4], &list1); |
| 439 | |
| 440 | /* before: [list1]->e[0]->e[1]->e[4], [list2]->e[2]->e[3] */ |
| 441 | list_splice_tail(&list2, &entries[4]); |
| 442 | /* after: [list1]->e[0]->e[1]->e[2]->e[3]->e[4], [list2] uninit */ |
| 443 | |
| 444 | list_for_each(cur, &list1) { |
| 445 | KUNIT_EXPECT_PTR_EQ(test, cur, &entries[i]); |
| 446 | i++; |
| 447 | } |
| 448 | |
| 449 | KUNIT_EXPECT_EQ(test, i, 5); |
| 450 | } |
| 451 | |
| 452 | static void list_test_list_splice_init(struct kunit *test) |
| 453 | { |
| 454 | struct list_head entries[5], *cur; |
| 455 | LIST_HEAD(list1); |
| 456 | LIST_HEAD(list2); |
| 457 | int i = 0; |
| 458 | |
| 459 | list_add_tail(&entries[0], &list1); |
| 460 | list_add_tail(&entries[1], &list1); |
| 461 | list_add_tail(&entries[2], &list2); |
| 462 | list_add_tail(&entries[3], &list2); |
| 463 | list_add_tail(&entries[4], &list1); |
| 464 | |
| 465 | /* before: [list1]->e[0]->e[1]->e[4], [list2]->e[2]->e[3] */ |
| 466 | list_splice_init(&list2, &entries[1]); |
| 467 | /* after: [list1]->e[0]->e[1]->e[2]->e[3]->e[4], [list2] empty */ |
| 468 | |
| 469 | list_for_each(cur, &list1) { |
| 470 | KUNIT_EXPECT_PTR_EQ(test, cur, &entries[i]); |
| 471 | i++; |
| 472 | } |
| 473 | |
| 474 | KUNIT_EXPECT_EQ(test, i, 5); |
| 475 | |
| 476 | KUNIT_EXPECT_TRUE(test, list_empty_careful(&list2)); |
| 477 | } |
| 478 | |
| 479 | static void list_test_list_splice_tail_init(struct kunit *test) |
| 480 | { |
| 481 | struct list_head entries[5], *cur; |
| 482 | LIST_HEAD(list1); |
| 483 | LIST_HEAD(list2); |
| 484 | int i = 0; |
| 485 | |
| 486 | list_add_tail(&entries[0], &list1); |
| 487 | list_add_tail(&entries[1], &list1); |
| 488 | list_add_tail(&entries[2], &list2); |
| 489 | list_add_tail(&entries[3], &list2); |
| 490 | list_add_tail(&entries[4], &list1); |
| 491 | |
| 492 | /* before: [list1]->e[0]->e[1]->e[4], [list2]->e[2]->e[3] */ |
| 493 | list_splice_tail_init(&list2, &entries[4]); |
| 494 | /* after: [list1]->e[0]->e[1]->e[2]->e[3]->e[4], [list2] empty */ |
| 495 | |
| 496 | list_for_each(cur, &list1) { |
| 497 | KUNIT_EXPECT_PTR_EQ(test, cur, &entries[i]); |
| 498 | i++; |
| 499 | } |
| 500 | |
| 501 | KUNIT_EXPECT_EQ(test, i, 5); |
| 502 | |
| 503 | KUNIT_EXPECT_TRUE(test, list_empty_careful(&list2)); |
| 504 | } |
| 505 | |
| 506 | static void list_test_list_entry(struct kunit *test) |
| 507 | { |
| 508 | struct list_test_struct test_struct; |
| 509 | |
| 510 | KUNIT_EXPECT_PTR_EQ(test, &test_struct, list_entry(&(test_struct.list), |
| 511 | struct list_test_struct, list)); |
| 512 | } |
| 513 | |
| 514 | static void list_test_list_first_entry(struct kunit *test) |
| 515 | { |
| 516 | struct list_test_struct test_struct1, test_struct2; |
| 517 | LIST_HEAD(list); |
| 518 | |
| 519 | list_add_tail(&test_struct1.list, &list); |
| 520 | list_add_tail(&test_struct2.list, &list); |
| 521 | |
| 522 | |
| 523 | KUNIT_EXPECT_PTR_EQ(test, &test_struct1, list_first_entry(&list, |
| 524 | struct list_test_struct, list)); |
| 525 | } |
| 526 | |
| 527 | static void list_test_list_last_entry(struct kunit *test) |
| 528 | { |
| 529 | struct list_test_struct test_struct1, test_struct2; |
| 530 | LIST_HEAD(list); |
| 531 | |
| 532 | list_add_tail(&test_struct1.list, &list); |
| 533 | list_add_tail(&test_struct2.list, &list); |
| 534 | |
| 535 | |
| 536 | KUNIT_EXPECT_PTR_EQ(test, &test_struct2, list_last_entry(&list, |
| 537 | struct list_test_struct, list)); |
| 538 | } |
| 539 | |
| 540 | static void list_test_list_first_entry_or_null(struct kunit *test) |
| 541 | { |
| 542 | struct list_test_struct test_struct1, test_struct2; |
| 543 | LIST_HEAD(list); |
| 544 | |
| 545 | KUNIT_EXPECT_FALSE(test, list_first_entry_or_null(&list, |
| 546 | struct list_test_struct, list)); |
| 547 | |
| 548 | list_add_tail(&test_struct1.list, &list); |
| 549 | list_add_tail(&test_struct2.list, &list); |
| 550 | |
| 551 | KUNIT_EXPECT_PTR_EQ(test, &test_struct1, |
| 552 | list_first_entry_or_null(&list, |
| 553 | struct list_test_struct, list)); |
| 554 | } |
| 555 | |
| 556 | static void list_test_list_next_entry(struct kunit *test) |
| 557 | { |
| 558 | struct list_test_struct test_struct1, test_struct2; |
| 559 | LIST_HEAD(list); |
| 560 | |
| 561 | list_add_tail(&test_struct1.list, &list); |
| 562 | list_add_tail(&test_struct2.list, &list); |
| 563 | |
| 564 | |
| 565 | KUNIT_EXPECT_PTR_EQ(test, &test_struct2, list_next_entry(&test_struct1, |
| 566 | list)); |
| 567 | } |
| 568 | |
| 569 | static void list_test_list_prev_entry(struct kunit *test) |
| 570 | { |
| 571 | struct list_test_struct test_struct1, test_struct2; |
| 572 | LIST_HEAD(list); |
| 573 | |
| 574 | list_add_tail(&test_struct1.list, &list); |
| 575 | list_add_tail(&test_struct2.list, &list); |
| 576 | |
| 577 | |
| 578 | KUNIT_EXPECT_PTR_EQ(test, &test_struct1, list_prev_entry(&test_struct2, |
| 579 | list)); |
| 580 | } |
| 581 | |
| 582 | static void list_test_list_for_each(struct kunit *test) |
| 583 | { |
| 584 | struct list_head entries[3], *cur; |
| 585 | LIST_HEAD(list); |
| 586 | int i = 0; |
| 587 | |
| 588 | list_add_tail(&entries[0], &list); |
| 589 | list_add_tail(&entries[1], &list); |
| 590 | list_add_tail(&entries[2], &list); |
| 591 | |
| 592 | list_for_each(cur, &list) { |
| 593 | KUNIT_EXPECT_PTR_EQ(test, cur, &entries[i]); |
| 594 | i++; |
| 595 | } |
| 596 | |
| 597 | KUNIT_EXPECT_EQ(test, i, 3); |
| 598 | } |
| 599 | |
| 600 | static void list_test_list_for_each_prev(struct kunit *test) |
| 601 | { |
| 602 | struct list_head entries[3], *cur; |
| 603 | LIST_HEAD(list); |
| 604 | int i = 2; |
| 605 | |
| 606 | list_add_tail(&entries[0], &list); |
| 607 | list_add_tail(&entries[1], &list); |
| 608 | list_add_tail(&entries[2], &list); |
| 609 | |
| 610 | list_for_each_prev(cur, &list) { |
| 611 | KUNIT_EXPECT_PTR_EQ(test, cur, &entries[i]); |
| 612 | i--; |
| 613 | } |
| 614 | |
| 615 | KUNIT_EXPECT_EQ(test, i, -1); |
| 616 | } |
| 617 | |
| 618 | static void list_test_list_for_each_safe(struct kunit *test) |
| 619 | { |
| 620 | struct list_head entries[3], *cur, *n; |
| 621 | LIST_HEAD(list); |
| 622 | int i = 0; |
| 623 | |
| 624 | |
| 625 | list_add_tail(&entries[0], &list); |
| 626 | list_add_tail(&entries[1], &list); |
| 627 | list_add_tail(&entries[2], &list); |
| 628 | |
| 629 | list_for_each_safe(cur, n, &list) { |
| 630 | KUNIT_EXPECT_PTR_EQ(test, cur, &entries[i]); |
| 631 | list_del(&entries[i]); |
| 632 | i++; |
| 633 | } |
| 634 | |
| 635 | KUNIT_EXPECT_EQ(test, i, 3); |
| 636 | KUNIT_EXPECT_TRUE(test, list_empty(&list)); |
| 637 | } |
| 638 | |
| 639 | static void list_test_list_for_each_prev_safe(struct kunit *test) |
| 640 | { |
| 641 | struct list_head entries[3], *cur, *n; |
| 642 | LIST_HEAD(list); |
| 643 | int i = 2; |
| 644 | |
| 645 | list_add_tail(&entries[0], &list); |
| 646 | list_add_tail(&entries[1], &list); |
| 647 | list_add_tail(&entries[2], &list); |
| 648 | |
| 649 | list_for_each_prev_safe(cur, n, &list) { |
| 650 | KUNIT_EXPECT_PTR_EQ(test, cur, &entries[i]); |
| 651 | list_del(&entries[i]); |
| 652 | i--; |
| 653 | } |
| 654 | |
| 655 | KUNIT_EXPECT_EQ(test, i, -1); |
| 656 | KUNIT_EXPECT_TRUE(test, list_empty(&list)); |
| 657 | } |
| 658 | |
| 659 | static void list_test_list_for_each_entry(struct kunit *test) |
| 660 | { |
| 661 | struct list_test_struct entries[5], *cur; |
| 662 | static LIST_HEAD(list); |
| 663 | int i = 0; |
| 664 | |
| 665 | for (i = 0; i < 5; ++i) { |
| 666 | entries[i].data = i; |
| 667 | list_add_tail(&entries[i].list, &list); |
| 668 | } |
| 669 | |
| 670 | i = 0; |
| 671 | |
| 672 | list_for_each_entry(cur, &list, list) { |
| 673 | KUNIT_EXPECT_EQ(test, cur->data, i); |
| 674 | i++; |
| 675 | } |
| 676 | |
| 677 | KUNIT_EXPECT_EQ(test, i, 5); |
| 678 | } |
| 679 | |
| 680 | static void list_test_list_for_each_entry_reverse(struct kunit *test) |
| 681 | { |
| 682 | struct list_test_struct entries[5], *cur; |
| 683 | static LIST_HEAD(list); |
| 684 | int i = 0; |
| 685 | |
| 686 | for (i = 0; i < 5; ++i) { |
| 687 | entries[i].data = i; |
| 688 | list_add_tail(&entries[i].list, &list); |
| 689 | } |
| 690 | |
| 691 | i = 4; |
| 692 | |
| 693 | list_for_each_entry_reverse(cur, &list, list) { |
| 694 | KUNIT_EXPECT_EQ(test, cur->data, i); |
| 695 | i--; |
| 696 | } |
| 697 | |
| 698 | KUNIT_EXPECT_EQ(test, i, -1); |
| 699 | } |
| 700 | |
| 701 | static struct kunit_case list_test_cases[] = { |
| 702 | KUNIT_CASE(list_test_list_init), |
| 703 | KUNIT_CASE(list_test_list_add), |
| 704 | KUNIT_CASE(list_test_list_add_tail), |
| 705 | KUNIT_CASE(list_test_list_del), |
| 706 | KUNIT_CASE(list_test_list_replace), |
| 707 | KUNIT_CASE(list_test_list_replace_init), |
| 708 | KUNIT_CASE(list_test_list_swap), |
| 709 | KUNIT_CASE(list_test_list_del_init), |
| 710 | KUNIT_CASE(list_test_list_move), |
| 711 | KUNIT_CASE(list_test_list_move_tail), |
| 712 | KUNIT_CASE(list_test_list_bulk_move_tail), |
| 713 | KUNIT_CASE(list_test_list_is_first), |
| 714 | KUNIT_CASE(list_test_list_is_last), |
| 715 | KUNIT_CASE(list_test_list_empty), |
| 716 | KUNIT_CASE(list_test_list_empty_careful), |
| 717 | KUNIT_CASE(list_test_list_rotate_left), |
| 718 | KUNIT_CASE(list_test_list_rotate_to_front), |
| 719 | KUNIT_CASE(list_test_list_is_singular), |
| 720 | KUNIT_CASE(list_test_list_cut_position), |
| 721 | KUNIT_CASE(list_test_list_cut_before), |
| 722 | KUNIT_CASE(list_test_list_splice), |
| 723 | KUNIT_CASE(list_test_list_splice_tail), |
| 724 | KUNIT_CASE(list_test_list_splice_init), |
| 725 | KUNIT_CASE(list_test_list_splice_tail_init), |
| 726 | KUNIT_CASE(list_test_list_entry), |
| 727 | KUNIT_CASE(list_test_list_first_entry), |
| 728 | KUNIT_CASE(list_test_list_last_entry), |
| 729 | KUNIT_CASE(list_test_list_first_entry_or_null), |
| 730 | KUNIT_CASE(list_test_list_next_entry), |
| 731 | KUNIT_CASE(list_test_list_prev_entry), |
| 732 | KUNIT_CASE(list_test_list_for_each), |
| 733 | KUNIT_CASE(list_test_list_for_each_prev), |
| 734 | KUNIT_CASE(list_test_list_for_each_safe), |
| 735 | KUNIT_CASE(list_test_list_for_each_prev_safe), |
| 736 | KUNIT_CASE(list_test_list_for_each_entry), |
| 737 | KUNIT_CASE(list_test_list_for_each_entry_reverse), |
| 738 | {}, |
| 739 | }; |
| 740 | |
| 741 | static struct kunit_suite list_test_module = { |
| 742 | .name = "list-kunit-test", |
| 743 | .test_cases = list_test_cases, |
| 744 | }; |
| 745 | |
Alan Maguire | c475c77 | 2020-01-06 22:28:20 +0000 | [diff] [blame] | 746 | kunit_test_suites(&list_test_module); |
| 747 | |
| 748 | MODULE_LICENSE("GPL v2"); |