| | 1 | // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 |
| | 2 | /* Copyright (c) 2018 Mellanox Technologies. All rights reserved */ |
| | 3 | |
| | 4 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| | 5 | |
| | 6 | #include <linux/kernel.h> |
| | 7 | #include <linux/module.h> |
| | 8 | #include <linux/slab.h> |
| | 9 | #include <linux/random.h> |
| | 10 | #include <linux/objagg.h> |
| | 11 | |
| | 12 | struct tokey { |
| | 13 | unsigned int id; |
| | 14 | }; |
| | 15 | |
| | 16 | #define NUM_KEYS 32 |
| | 17 | |
| | 18 | static int key_id_index(unsigned int key_id) |
| | 19 | { |
| | 20 | if (key_id >= NUM_KEYS) { |
| | 21 | WARN_ON(1); |
| | 22 | return 0; |
| | 23 | } |
| | 24 | return key_id; |
| | 25 | } |
| | 26 | |
| | 27 | #define BUF_LEN 128 |
| | 28 | |
| | 29 | struct world { |
| | 30 | unsigned int root_count; |
| | 31 | unsigned int delta_count; |
| | 32 | char next_root_buf[BUF_LEN]; |
| | 33 | struct objagg_obj *objagg_objs[NUM_KEYS]; |
| | 34 | unsigned int key_refs[NUM_KEYS]; |
| | 35 | }; |
| | 36 | |
| | 37 | struct root { |
| | 38 | struct tokey key; |
| | 39 | char buf[BUF_LEN]; |
| | 40 | }; |
| | 41 | |
| | 42 | struct delta { |
| | 43 | unsigned int key_id_diff; |
| | 44 | }; |
| | 45 | |
| | 46 | static struct objagg_obj *world_obj_get(struct world *world, |
| | 47 | struct objagg *objagg, |
| | 48 | unsigned int key_id) |
| | 49 | { |
| | 50 | struct objagg_obj *objagg_obj; |
| | 51 | struct tokey key; |
| | 52 | int err; |
| | 53 | |
| | 54 | key.id = key_id; |
| | 55 | objagg_obj = objagg_obj_get(objagg, &key); |
| | 56 | if (IS_ERR(objagg_obj)) { |
| | 57 | pr_err("Key %u: Failed to get object.\n", key_id); |
| | 58 | return objagg_obj; |
| | 59 | } |
| | 60 | if (!world->key_refs[key_id_index(key_id)]) { |
| | 61 | world->objagg_objs[key_id_index(key_id)] = objagg_obj; |
| | 62 | } else if (world->objagg_objs[key_id_index(key_id)] != objagg_obj) { |
| | 63 | pr_err("Key %u: God another object for the same key.\n", |
| | 64 | key_id); |
| | 65 | err = -EINVAL; |
| | 66 | goto err_key_id_check; |
| | 67 | } |
| | 68 | world->key_refs[key_id_index(key_id)]++; |
| | 69 | return objagg_obj; |
| | 70 | |
| | 71 | err_key_id_check: |
| | 72 | objagg_obj_put(objagg, objagg_obj); |
| | 73 | return ERR_PTR(err); |
| | 74 | } |
| | 75 | |
| | 76 | static void world_obj_put(struct world *world, struct objagg *objagg, |
| | 77 | unsigned int key_id) |
| | 78 | { |
| | 79 | struct objagg_obj *objagg_obj; |
| | 80 | |
| | 81 | if (!world->key_refs[key_id_index(key_id)]) |
| | 82 | return; |
| | 83 | objagg_obj = world->objagg_objs[key_id_index(key_id)]; |
| | 84 | objagg_obj_put(objagg, objagg_obj); |
| | 85 | world->key_refs[key_id_index(key_id)]--; |
| | 86 | } |
| | 87 | |
| | 88 | #define MAX_KEY_ID_DIFF 5 |
| | 89 | |
| | 90 | static bool delta_check(void *priv, const void *parent_obj, const void *obj) |
| | 91 | { |
| | 92 | const struct tokey *parent_key = parent_obj; |
| | 93 | const struct tokey *key = obj; |
| | 94 | int diff = key->id - parent_key->id; |
| | 95 | |
| | 96 | return diff >= 0 && diff <= MAX_KEY_ID_DIFF; |
| | 97 | } |
| | 98 | |
| | 99 | static void *delta_create(void *priv, void *parent_obj, void *obj) |
| | 100 | { |
| | 101 | struct tokey *parent_key = parent_obj; |
| | 102 | struct world *world = priv; |
| | 103 | struct tokey *key = obj; |
| | 104 | int diff = key->id - parent_key->id; |
| | 105 | struct delta *delta; |
| | 106 | |
| | 107 | if (!delta_check(priv, parent_obj, obj)) |
| | 108 | return ERR_PTR(-EINVAL); |
| | 109 | |
| | 110 | delta = kzalloc(sizeof(*delta), GFP_KERNEL); |
| | 111 | if (!delta) |
| | 112 | return ERR_PTR(-ENOMEM); |
| | 113 | delta->key_id_diff = diff; |
| | 114 | world->delta_count++; |
| | 115 | return delta; |
| | 116 | } |
| | 117 | |
| | 118 | static void delta_destroy(void *priv, void *delta_priv) |
| | 119 | { |
| | 120 | struct delta *delta = delta_priv; |
| | 121 | struct world *world = priv; |
| | 122 | |
| | 123 | world->delta_count--; |
| | 124 | kfree(delta); |
| | 125 | } |
| | 126 | |
| | 127 | static void *root_create(void *priv, void *obj, unsigned int id) |
| | 128 | { |
| | 129 | struct world *world = priv; |
| | 130 | struct tokey *key = obj; |
| | 131 | struct root *root; |
| | 132 | |
| | 133 | root = kzalloc(sizeof(*root), GFP_KERNEL); |
| | 134 | if (!root) |
| | 135 | return ERR_PTR(-ENOMEM); |
| | 136 | memcpy(&root->key, key, sizeof(root->key)); |
| | 137 | memcpy(root->buf, world->next_root_buf, sizeof(root->buf)); |
| | 138 | world->root_count++; |
| | 139 | return root; |
| | 140 | } |
| | 141 | |
| | 142 | static void root_destroy(void *priv, void *root_priv) |
| | 143 | { |
| | 144 | struct root *root = root_priv; |
| | 145 | struct world *world = priv; |
| | 146 | |
| | 147 | world->root_count--; |
| | 148 | kfree(root); |
| | 149 | } |
| | 150 | |
| | 151 | static int test_nodelta_obj_get(struct world *world, struct objagg *objagg, |
| | 152 | unsigned int key_id, bool should_create_root) |
| | 153 | { |
| | 154 | unsigned int orig_root_count = world->root_count; |
| | 155 | struct objagg_obj *objagg_obj; |
| | 156 | const struct root *root; |
| | 157 | int err; |
| | 158 | |
| | 159 | if (should_create_root) |
| | 160 | prandom_bytes(world->next_root_buf, |
| | 161 | sizeof(world->next_root_buf)); |
| | 162 | |
| | 163 | objagg_obj = world_obj_get(world, objagg, key_id); |
| | 164 | if (IS_ERR(objagg_obj)) { |
| | 165 | pr_err("Key %u: Failed to get object.\n", key_id); |
| | 166 | return PTR_ERR(objagg_obj); |
| | 167 | } |
| | 168 | if (should_create_root) { |
| | 169 | if (world->root_count != orig_root_count + 1) { |
| | 170 | pr_err("Key %u: Root was not created\n", key_id); |
| | 171 | err = -EINVAL; |
| | 172 | goto err_check_root_count; |
| | 173 | } |
| | 174 | } else { |
| | 175 | if (world->root_count != orig_root_count) { |
| | 176 | pr_err("Key %u: Root was incorrectly created\n", |
| | 177 | key_id); |
| | 178 | err = -EINVAL; |
| | 179 | goto err_check_root_count; |
| | 180 | } |
| | 181 | } |
| | 182 | root = objagg_obj_root_priv(objagg_obj); |
| | 183 | if (root->key.id != key_id) { |
| | 184 | pr_err("Key %u: Root has unexpected key id\n", key_id); |
| | 185 | err = -EINVAL; |
| | 186 | goto err_check_key_id; |
| | 187 | } |
| | 188 | if (should_create_root && |
| | 189 | memcmp(world->next_root_buf, root->buf, sizeof(root->buf))) { |
| | 190 | pr_err("Key %u: Buffer does not match the expected content\n", |
| | 191 | key_id); |
| | 192 | err = -EINVAL; |
| | 193 | goto err_check_buf; |
| | 194 | } |
| | 195 | return 0; |
| | 196 | |
| | 197 | err_check_buf: |
| | 198 | err_check_key_id: |
| | 199 | err_check_root_count: |
| | 200 | objagg_obj_put(objagg, objagg_obj); |
| | 201 | return err; |
| | 202 | } |
| | 203 | |
| | 204 | static int test_nodelta_obj_put(struct world *world, struct objagg *objagg, |
| | 205 | unsigned int key_id, bool should_destroy_root) |
| | 206 | { |
| | 207 | unsigned int orig_root_count = world->root_count; |
| | 208 | |
| | 209 | world_obj_put(world, objagg, key_id); |
| | 210 | |
| | 211 | if (should_destroy_root) { |
| | 212 | if (world->root_count != orig_root_count - 1) { |
| | 213 | pr_err("Key %u: Root was not destroyed\n", key_id); |
| | 214 | return -EINVAL; |
| | 215 | } |
| | 216 | } else { |
| | 217 | if (world->root_count != orig_root_count) { |
| | 218 | pr_err("Key %u: Root was incorrectly destroyed\n", |
| | 219 | key_id); |
| | 220 | return -EINVAL; |
| | 221 | } |
| | 222 | } |
| | 223 | return 0; |
| | 224 | } |
| | 225 | |
| | 226 | static int check_stats_zero(struct objagg *objagg) |
| | 227 | { |
| | 228 | const struct objagg_stats *stats; |
| | 229 | int err = 0; |
| | 230 | |
| | 231 | stats = objagg_stats_get(objagg); |
| | 232 | if (IS_ERR(stats)) |
| | 233 | return PTR_ERR(stats); |
| | 234 | |
| | 235 | if (stats->stats_info_count != 0) { |
| | 236 | pr_err("Stats: Object count is not zero while it should be\n"); |
| | 237 | err = -EINVAL; |
| | 238 | } |
| | 239 | |
| | 240 | objagg_stats_put(stats); |
| | 241 | return err; |
| | 242 | } |
| | 243 | |
| | 244 | static int check_stats_nodelta(struct objagg *objagg) |
| | 245 | { |
| | 246 | const struct objagg_stats *stats; |
| | 247 | int i; |
| | 248 | int err; |
| | 249 | |
| | 250 | stats = objagg_stats_get(objagg); |
| | 251 | if (IS_ERR(stats)) |
| | 252 | return PTR_ERR(stats); |
| | 253 | |
| | 254 | if (stats->stats_info_count != NUM_KEYS) { |
| | 255 | pr_err("Stats: Unexpected object count (%u expected, %u returned)\n", |
| | 256 | NUM_KEYS, stats->stats_info_count); |
| | 257 | err = -EINVAL; |
| | 258 | goto stats_put; |
| | 259 | } |
| | 260 | |
| | 261 | for (i = 0; i < stats->stats_info_count; i++) { |
| | 262 | if (stats->stats_info[i].stats.user_count != 2) { |
| | 263 | pr_err("Stats: incorrect user count\n"); |
| | 264 | err = -EINVAL; |
| | 265 | goto stats_put; |
| | 266 | } |
| | 267 | if (stats->stats_info[i].stats.delta_user_count != 2) { |
| | 268 | pr_err("Stats: incorrect delta user count\n"); |
| | 269 | err = -EINVAL; |
| | 270 | goto stats_put; |
| | 271 | } |
| | 272 | } |
| | 273 | err = 0; |
| | 274 | |
| | 275 | stats_put: |
| | 276 | objagg_stats_put(stats); |
| | 277 | return err; |
| | 278 | } |
| | 279 | |
| | 280 | static bool delta_check_dummy(void *priv, const void *parent_obj, |
| | 281 | const void *obj) |
| | 282 | { |
| | 283 | return false; |
| | 284 | } |
| | 285 | |
| | 286 | static void *delta_create_dummy(void *priv, void *parent_obj, void *obj) |
| | 287 | { |
| | 288 | return ERR_PTR(-EOPNOTSUPP); |
| | 289 | } |
| | 290 | |
| | 291 | static void delta_destroy_dummy(void *priv, void *delta_priv) |
| | 292 | { |
| | 293 | } |
| | 294 | |
| | 295 | static const struct objagg_ops nodelta_ops = { |
| | 296 | .obj_size = sizeof(struct tokey), |
| | 297 | .delta_check = delta_check_dummy, |
| | 298 | .delta_create = delta_create_dummy, |
| | 299 | .delta_destroy = delta_destroy_dummy, |
| | 300 | .root_create = root_create, |
| | 301 | .root_destroy = root_destroy, |
| | 302 | }; |
| | 303 | |
| | 304 | static int test_nodelta(void) |
| | 305 | { |
| | 306 | struct world world = {}; |
| | 307 | struct objagg *objagg; |
| | 308 | int i; |
| | 309 | int err; |
| | 310 | |
| | 311 | objagg = objagg_create(&nodelta_ops, NULL, &world); |
| | 312 | if (IS_ERR(objagg)) |
| | 313 | return PTR_ERR(objagg); |
| | 314 | |
| | 315 | err = check_stats_zero(objagg); |
| | 316 | if (err) |
| | 317 | goto err_stats_first_zero; |
| | 318 | |
| | 319 | /* First round of gets, the root objects should be created */ |
| | 320 | for (i = 0; i < NUM_KEYS; i++) { |
| | 321 | err = test_nodelta_obj_get(&world, objagg, i, true); |
| | 322 | if (err) |
| | 323 | goto err_obj_first_get; |
| | 324 | } |
| | 325 | |
| | 326 | /* Do the second round of gets, all roots are already created, |
| | 327 | * make sure that no new root is created |
| | 328 | */ |
| | 329 | for (i = 0; i < NUM_KEYS; i++) { |
| | 330 | err = test_nodelta_obj_get(&world, objagg, i, false); |
| | 331 | if (err) |
| | 332 | goto err_obj_second_get; |
| | 333 | } |
| | 334 | |
| | 335 | err = check_stats_nodelta(objagg); |
| | 336 | if (err) |
| | 337 | goto err_stats_nodelta; |
| | 338 | |
| | 339 | for (i = NUM_KEYS - 1; i >= 0; i--) { |
| | 340 | err = test_nodelta_obj_put(&world, objagg, i, false); |
| | 341 | if (err) |
| | 342 | goto err_obj_first_put; |
| | 343 | } |
| | 344 | for (i = NUM_KEYS - 1; i >= 0; i--) { |
| | 345 | err = test_nodelta_obj_put(&world, objagg, i, true); |
| | 346 | if (err) |
| | 347 | goto err_obj_second_put; |
| | 348 | } |
| | 349 | |
| | 350 | err = check_stats_zero(objagg); |
| | 351 | if (err) |
| | 352 | goto err_stats_second_zero; |
| | 353 | |
| | 354 | objagg_destroy(objagg); |
| | 355 | return 0; |
| | 356 | |
| | 357 | err_stats_nodelta: |
| | 358 | err_obj_first_put: |
| | 359 | err_obj_second_get: |
| | 360 | for (i--; i >= 0; i--) |
| | 361 | world_obj_put(&world, objagg, i); |
| | 362 | |
| | 363 | i = NUM_KEYS; |
| | 364 | err_obj_first_get: |
| | 365 | err_obj_second_put: |
| | 366 | for (i--; i >= 0; i--) |
| | 367 | world_obj_put(&world, objagg, i); |
| | 368 | err_stats_first_zero: |
| | 369 | err_stats_second_zero: |
| | 370 | objagg_destroy(objagg); |
| | 371 | return err; |
| | 372 | } |
| | 373 | |
| | 374 | static const struct objagg_ops delta_ops = { |
| | 375 | .obj_size = sizeof(struct tokey), |
| | 376 | .delta_check = delta_check, |
| | 377 | .delta_create = delta_create, |
| | 378 | .delta_destroy = delta_destroy, |
| | 379 | .root_create = root_create, |
| | 380 | .root_destroy = root_destroy, |
| | 381 | }; |
| | 382 | |
| | 383 | enum action { |
| | 384 | ACTION_GET, |
| | 385 | ACTION_PUT, |
| | 386 | }; |
| | 387 | |
| | 388 | enum expect_delta { |
| | 389 | EXPECT_DELTA_SAME, |
| | 390 | EXPECT_DELTA_INC, |
| | 391 | EXPECT_DELTA_DEC, |
| | 392 | }; |
| | 393 | |
| | 394 | enum expect_root { |
| | 395 | EXPECT_ROOT_SAME, |
| | 396 | EXPECT_ROOT_INC, |
| | 397 | EXPECT_ROOT_DEC, |
| | 398 | }; |
| | 399 | |
| | 400 | struct expect_stats_info { |
| | 401 | struct objagg_obj_stats stats; |
| | 402 | bool is_root; |
| | 403 | unsigned int key_id; |
| | 404 | }; |
| | 405 | |
| | 406 | struct expect_stats { |
| | 407 | unsigned int info_count; |
| | 408 | struct expect_stats_info info[NUM_KEYS]; |
| | 409 | }; |
| | 410 | |
| | 411 | struct action_item { |
| | 412 | unsigned int key_id; |
| | 413 | enum action action; |
| | 414 | enum expect_delta expect_delta; |
| | 415 | enum expect_root expect_root; |
| | 416 | struct expect_stats expect_stats; |
| | 417 | }; |
| | 418 | |
| | 419 | #define EXPECT_STATS(count, ...) \ |
| | 420 | { \ |
| | 421 | .info_count = count, \ |
| | 422 | .info = { __VA_ARGS__ } \ |
| | 423 | } |
| | 424 | |
| | 425 | #define ROOT(key_id, user_count, delta_user_count) \ |
| | 426 | {{user_count, delta_user_count}, true, key_id} |
| | 427 | |
| | 428 | #define DELTA(key_id, user_count) \ |
| | 429 | {{user_count, user_count}, false, key_id} |
| | 430 | |
| | 431 | static const struct action_item action_items[] = { |
| | 432 | { |
| | 433 | 1, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_INC, |
| | 434 | EXPECT_STATS(1, ROOT(1, 1, 1)), |
| | 435 | }, /* r: 1 d: */ |
| | 436 | { |
| | 437 | 7, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_INC, |
| | 438 | EXPECT_STATS(2, ROOT(1, 1, 1), ROOT(7, 1, 1)), |
| | 439 | }, /* r: 1, 7 d: */ |
| | 440 | { |
| | 441 | 3, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME, |
| | 442 | EXPECT_STATS(3, ROOT(1, 1, 2), ROOT(7, 1, 1), |
| | 443 | DELTA(3, 1)), |
| | 444 | }, /* r: 1, 7 d: 3^1 */ |
| | 445 | { |
| | 446 | 5, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME, |
| | 447 | EXPECT_STATS(4, ROOT(1, 1, 3), ROOT(7, 1, 1), |
| | 448 | DELTA(3, 1), DELTA(5, 1)), |
| | 449 | }, /* r: 1, 7 d: 3^1, 5^1 */ |
| | 450 | { |
| | 451 | 3, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
| | 452 | EXPECT_STATS(4, ROOT(1, 1, 4), ROOT(7, 1, 1), |
| | 453 | DELTA(3, 2), DELTA(5, 1)), |
| | 454 | }, /* r: 1, 7 d: 3^1, 3^1, 5^1 */ |
| | 455 | { |
| | 456 | 1, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
| | 457 | EXPECT_STATS(4, ROOT(1, 2, 5), ROOT(7, 1, 1), |
| | 458 | DELTA(3, 2), DELTA(5, 1)), |
| | 459 | }, /* r: 1, 1, 7 d: 3^1, 3^1, 5^1 */ |
| | 460 | { |
| | 461 | 30, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_INC, |
| | 462 | EXPECT_STATS(5, ROOT(1, 2, 5), ROOT(7, 1, 1), ROOT(30, 1, 1), |
| | 463 | DELTA(3, 2), DELTA(5, 1)), |
| | 464 | }, /* r: 1, 1, 7, 30 d: 3^1, 3^1, 5^1 */ |
| | 465 | { |
| | 466 | 8, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME, |
| | 467 | EXPECT_STATS(6, ROOT(1, 2, 5), ROOT(7, 1, 2), ROOT(30, 1, 1), |
| | 468 | DELTA(3, 2), DELTA(5, 1), DELTA(8, 1)), |
| | 469 | }, /* r: 1, 1, 7, 30 d: 3^1, 3^1, 5^1, 8^7 */ |
| | 470 | { |
| | 471 | 8, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
| | 472 | EXPECT_STATS(6, ROOT(1, 2, 5), ROOT(7, 1, 3), ROOT(30, 1, 1), |
| | 473 | DELTA(3, 2), DELTA(8, 2), DELTA(5, 1)), |
| | 474 | }, /* r: 1, 1, 7, 30 d: 3^1, 3^1, 5^1, 8^7, 8^7 */ |
| | 475 | { |
| | 476 | 3, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
| | 477 | EXPECT_STATS(6, ROOT(1, 2, 4), ROOT(7, 1, 3), ROOT(30, 1, 1), |
| | 478 | DELTA(8, 2), DELTA(3, 1), DELTA(5, 1)), |
| | 479 | }, /* r: 1, 1, 7, 30 d: 3^1, 5^1, 8^7, 8^7 */ |
| | 480 | { |
| | 481 | 3, ACTION_PUT, EXPECT_DELTA_DEC, EXPECT_ROOT_SAME, |
| | 482 | EXPECT_STATS(5, ROOT(1, 2, 3), ROOT(7, 1, 3), ROOT(30, 1, 1), |
| | 483 | DELTA(8, 2), DELTA(5, 1)), |
| | 484 | }, /* r: 1, 1, 7, 30 d: 5^1, 8^7, 8^7 */ |
| | 485 | { |
| | 486 | 1, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
| | 487 | EXPECT_STATS(5, ROOT(7, 1, 3), ROOT(1, 1, 2), ROOT(30, 1, 1), |
| | 488 | DELTA(8, 2), DELTA(5, 1)), |
| | 489 | }, /* r: 1, 7, 30 d: 5^1, 8^7, 8^7 */ |
| | 490 | { |
| | 491 | 1, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
| | 492 | EXPECT_STATS(5, ROOT(7, 1, 3), ROOT(30, 1, 1), ROOT(1, 0, 1), |
| | 493 | DELTA(8, 2), DELTA(5, 1)), |
| | 494 | }, /* r: 7, 30 d: 5^1, 8^7, 8^7 */ |
| | 495 | { |
| | 496 | 5, ACTION_PUT, EXPECT_DELTA_DEC, EXPECT_ROOT_DEC, |
| | 497 | EXPECT_STATS(3, ROOT(7, 1, 3), ROOT(30, 1, 1), |
| | 498 | DELTA(8, 2)), |
| | 499 | }, /* r: 7, 30 d: 8^7, 8^7 */ |
| | 500 | { |
| | 501 | 5, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_INC, |
| | 502 | EXPECT_STATS(4, ROOT(7, 1, 3), ROOT(30, 1, 1), ROOT(5, 1, 1), |
| | 503 | DELTA(8, 2)), |
| | 504 | }, /* r: 7, 30, 5 d: 8^7, 8^7 */ |
| | 505 | { |
| | 506 | 6, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME, |
| | 507 | EXPECT_STATS(5, ROOT(7, 1, 3), ROOT(5, 1, 2), ROOT(30, 1, 1), |
| | 508 | DELTA(8, 2), DELTA(6, 1)), |
| | 509 | }, /* r: 7, 30, 5 d: 8^7, 8^7, 6^5 */ |
| | 510 | { |
| | 511 | 8, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
| | 512 | EXPECT_STATS(5, ROOT(7, 1, 4), ROOT(5, 1, 2), ROOT(30, 1, 1), |
| | 513 | DELTA(8, 3), DELTA(6, 1)), |
| | 514 | }, /* r: 7, 30, 5 d: 8^7, 8^7, 8^7, 6^5 */ |
| | 515 | { |
| | 516 | 8, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
| | 517 | EXPECT_STATS(5, ROOT(7, 1, 3), ROOT(5, 1, 2), ROOT(30, 1, 1), |
| | 518 | DELTA(8, 2), DELTA(6, 1)), |
| | 519 | }, /* r: 7, 30, 5 d: 8^7, 8^7, 6^5 */ |
| | 520 | { |
| | 521 | 8, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
| | 522 | EXPECT_STATS(5, ROOT(7, 1, 2), ROOT(5, 1, 2), ROOT(30, 1, 1), |
| | 523 | DELTA(8, 1), DELTA(6, 1)), |
| | 524 | }, /* r: 7, 30, 5 d: 8^7, 6^5 */ |
| | 525 | { |
| | 526 | 8, ACTION_PUT, EXPECT_DELTA_DEC, EXPECT_ROOT_SAME, |
| | 527 | EXPECT_STATS(4, ROOT(5, 1, 2), ROOT(7, 1, 1), ROOT(30, 1, 1), |
| | 528 | DELTA(6, 1)), |
| | 529 | }, /* r: 7, 30, 5 d: 6^5 */ |
| | 530 | { |
| | 531 | 8, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME, |
| | 532 | EXPECT_STATS(5, ROOT(5, 1, 3), ROOT(7, 1, 1), ROOT(30, 1, 1), |
| | 533 | DELTA(6, 1), DELTA(8, 1)), |
| | 534 | }, /* r: 7, 30, 5 d: 6^5, 8^5 */ |
| | 535 | { |
| | 536 | 7, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_DEC, |
| | 537 | EXPECT_STATS(4, ROOT(5, 1, 3), ROOT(30, 1, 1), |
| | 538 | DELTA(6, 1), DELTA(8, 1)), |
| | 539 | }, /* r: 30, 5 d: 6^5, 8^5 */ |
| | 540 | { |
| | 541 | 30, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_DEC, |
| | 542 | EXPECT_STATS(3, ROOT(5, 1, 3), |
| | 543 | DELTA(6, 1), DELTA(8, 1)), |
| | 544 | }, /* r: 5 d: 6^5, 8^5 */ |
| | 545 | { |
| | 546 | 5, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, |
| | 547 | EXPECT_STATS(3, ROOT(5, 0, 2), |
| | 548 | DELTA(6, 1), DELTA(8, 1)), |
| | 549 | }, /* r: d: 6^5, 8^5 */ |
| | 550 | { |
| | 551 | 6, ACTION_PUT, EXPECT_DELTA_DEC, EXPECT_ROOT_SAME, |
| | 552 | EXPECT_STATS(2, ROOT(5, 0, 1), |
| | 553 | DELTA(8, 1)), |
| | 554 | }, /* r: d: 6^5 */ |
| | 555 | { |
| | 556 | 8, ACTION_PUT, EXPECT_DELTA_DEC, EXPECT_ROOT_DEC, |
| | 557 | EXPECT_STATS(0, ), |
| | 558 | }, /* r: d: */ |
| | 559 | }; |
| | 560 | |
| | 561 | static int check_expect(struct world *world, |
| | 562 | const struct action_item *action_item, |
| | 563 | unsigned int orig_delta_count, |
| | 564 | unsigned int orig_root_count) |
| | 565 | { |
| | 566 | unsigned int key_id = action_item->key_id; |
| | 567 | |
| | 568 | switch (action_item->expect_delta) { |
| | 569 | case EXPECT_DELTA_SAME: |
| | 570 | if (orig_delta_count != world->delta_count) { |
| | 571 | pr_err("Key %u: Delta count changed while expected to remain the same.\n", |
| | 572 | key_id); |
| | 573 | return -EINVAL; |
| | 574 | } |
| | 575 | break; |
| | 576 | case EXPECT_DELTA_INC: |
| | 577 | if (WARN_ON(action_item->action == ACTION_PUT)) |
| | 578 | return -EINVAL; |
| | 579 | if (orig_delta_count + 1 != world->delta_count) { |
| | 580 | pr_err("Key %u: Delta count was not incremented.\n", |
| | 581 | key_id); |
| | 582 | return -EINVAL; |
| | 583 | } |
| | 584 | break; |
| | 585 | case EXPECT_DELTA_DEC: |
| | 586 | if (WARN_ON(action_item->action == ACTION_GET)) |
| | 587 | return -EINVAL; |
| | 588 | if (orig_delta_count - 1 != world->delta_count) { |
| | 589 | pr_err("Key %u: Delta count was not decremented.\n", |
| | 590 | key_id); |
| | 591 | return -EINVAL; |
| | 592 | } |
| | 593 | break; |
| | 594 | } |
| | 595 | |
| | 596 | switch (action_item->expect_root) { |
| | 597 | case EXPECT_ROOT_SAME: |
| | 598 | if (orig_root_count != world->root_count) { |
| | 599 | pr_err("Key %u: Root count changed while expected to remain the same.\n", |
| | 600 | key_id); |
| | 601 | return -EINVAL; |
| | 602 | } |
| | 603 | break; |
| | 604 | case EXPECT_ROOT_INC: |
| | 605 | if (WARN_ON(action_item->action == ACTION_PUT)) |
| | 606 | return -EINVAL; |
| | 607 | if (orig_root_count + 1 != world->root_count) { |
| | 608 | pr_err("Key %u: Root count was not incremented.\n", |
| | 609 | key_id); |
| | 610 | return -EINVAL; |
| | 611 | } |
| | 612 | break; |
| | 613 | case EXPECT_ROOT_DEC: |
| | 614 | if (WARN_ON(action_item->action == ACTION_GET)) |
| | 615 | return -EINVAL; |
| | 616 | if (orig_root_count - 1 != world->root_count) { |
| | 617 | pr_err("Key %u: Root count was not decremented.\n", |
| | 618 | key_id); |
| | 619 | return -EINVAL; |
| | 620 | } |
| | 621 | } |
| | 622 | |
| | 623 | return 0; |
| | 624 | } |
| | 625 | |
| | 626 | static unsigned int obj_to_key_id(struct objagg_obj *objagg_obj) |
| | 627 | { |
| | 628 | const struct tokey *root_key; |
| | 629 | const struct delta *delta; |
| | 630 | unsigned int key_id; |
| | 631 | |
| | 632 | root_key = objagg_obj_root_priv(objagg_obj); |
| | 633 | key_id = root_key->id; |
| | 634 | delta = objagg_obj_delta_priv(objagg_obj); |
| | 635 | if (delta) |
| | 636 | key_id += delta->key_id_diff; |
| | 637 | return key_id; |
| | 638 | } |
| | 639 | |
| | 640 | static int |
| | 641 | check_expect_stats_nums(const struct objagg_obj_stats_info *stats_info, |
| | 642 | const struct expect_stats_info *expect_stats_info, |
| | 643 | const char **errmsg) |
| | 644 | { |
| | 645 | if (stats_info->is_root != expect_stats_info->is_root) { |
| | 646 | if (errmsg) |
| | 647 | *errmsg = "Incorrect root/delta indication"; |
| | 648 | return -EINVAL; |
| | 649 | } |
| | 650 | if (stats_info->stats.user_count != |
| | 651 | expect_stats_info->stats.user_count) { |
| | 652 | if (errmsg) |
| | 653 | *errmsg = "Incorrect user count"; |
| | 654 | return -EINVAL; |
| | 655 | } |
| | 656 | if (stats_info->stats.delta_user_count != |
| | 657 | expect_stats_info->stats.delta_user_count) { |
| | 658 | if (errmsg) |
| | 659 | *errmsg = "Incorrect delta user count"; |
| | 660 | return -EINVAL; |
| | 661 | } |
| | 662 | return 0; |
| | 663 | } |
| | 664 | |
| | 665 | static int |
| | 666 | check_expect_stats_key_id(const struct objagg_obj_stats_info *stats_info, |
| | 667 | const struct expect_stats_info *expect_stats_info, |
| | 668 | const char **errmsg) |
| | 669 | { |
| | 670 | if (obj_to_key_id(stats_info->objagg_obj) != |
| | 671 | expect_stats_info->key_id) { |
| | 672 | if (errmsg) |
| | 673 | *errmsg = "incorrect key id"; |
| | 674 | return -EINVAL; |
| | 675 | } |
| | 676 | return 0; |
| | 677 | } |
| | 678 | |
| | 679 | static int check_expect_stats_neigh(const struct objagg_stats *stats, |
| | 680 | const struct expect_stats *expect_stats, |
| | 681 | int pos) |
| | 682 | { |
| | 683 | int i; |
| | 684 | int err; |
| | 685 | |
| | 686 | for (i = pos - 1; i >= 0; i--) { |
| | 687 | err = check_expect_stats_nums(&stats->stats_info[i], |
| | 688 | &expect_stats->info[pos], NULL); |
| | 689 | if (err) |
| | 690 | break; |
| | 691 | err = check_expect_stats_key_id(&stats->stats_info[i], |
| | 692 | &expect_stats->info[pos], NULL); |
| | 693 | if (!err) |
| | 694 | return 0; |
| | 695 | } |
| | 696 | for (i = pos + 1; i < stats->stats_info_count; i++) { |
| | 697 | err = check_expect_stats_nums(&stats->stats_info[i], |
| | 698 | &expect_stats->info[pos], NULL); |
| | 699 | if (err) |
| | 700 | break; |
| | 701 | err = check_expect_stats_key_id(&stats->stats_info[i], |
| | 702 | &expect_stats->info[pos], NULL); |
| | 703 | if (!err) |
| | 704 | return 0; |
| | 705 | } |
| | 706 | return -EINVAL; |
| | 707 | } |
| | 708 | |
| | 709 | static int __check_expect_stats(const struct objagg_stats *stats, |
| | 710 | const struct expect_stats *expect_stats, |
| | 711 | const char **errmsg) |
| | 712 | { |
| | 713 | int i; |
| | 714 | int err; |
| | 715 | |
| | 716 | if (stats->stats_info_count != expect_stats->info_count) { |
| | 717 | *errmsg = "Unexpected object count"; |
| | 718 | return -EINVAL; |
| | 719 | } |
| | 720 | |
| | 721 | for (i = 0; i < stats->stats_info_count; i++) { |
| | 722 | err = check_expect_stats_nums(&stats->stats_info[i], |
| | 723 | &expect_stats->info[i], errmsg); |
| | 724 | if (err) |
| | 725 | return err; |
| | 726 | err = check_expect_stats_key_id(&stats->stats_info[i], |
| | 727 | &expect_stats->info[i], errmsg); |
| | 728 | if (err) { |
| | 729 | /* It is possible that one of the neighbor stats with |
| | 730 | * same numbers have the correct key id, so check it |
| | 731 | */ |
| | 732 | err = check_expect_stats_neigh(stats, expect_stats, i); |
| | 733 | if (err) |
| | 734 | return err; |
| | 735 | } |
| | 736 | } |
| | 737 | return 0; |
| | 738 | } |
| | 739 | |
| | 740 | static int check_expect_stats(struct objagg *objagg, |
| | 741 | const struct expect_stats *expect_stats, |
| | 742 | const char **errmsg) |
| | 743 | { |
| | 744 | const struct objagg_stats *stats; |
| | 745 | int err; |
| | 746 | |
| | 747 | stats = objagg_stats_get(objagg); |
| | 748 | if (IS_ERR(stats)) { |
| | 749 | *errmsg = "objagg_stats_get() failed."; |
| | 750 | return PTR_ERR(stats); |
| | 751 | } |
| | 752 | err = __check_expect_stats(stats, expect_stats, errmsg); |
| | 753 | objagg_stats_put(stats); |
| | 754 | return err; |
| | 755 | } |
| | 756 | |
| | 757 | static int test_delta_action_item(struct world *world, |
| | 758 | struct objagg *objagg, |
| | 759 | const struct action_item *action_item, |
| | 760 | bool inverse) |
| | 761 | { |
| | 762 | unsigned int orig_delta_count = world->delta_count; |
| | 763 | unsigned int orig_root_count = world->root_count; |
| | 764 | unsigned int key_id = action_item->key_id; |
| | 765 | enum action action = action_item->action; |
| | 766 | struct objagg_obj *objagg_obj; |
| | 767 | const char *errmsg; |
| | 768 | int err; |
| | 769 | |
| | 770 | if (inverse) |
| | 771 | action = action == ACTION_GET ? ACTION_PUT : ACTION_GET; |
| | 772 | |
| | 773 | switch (action) { |
| | 774 | case ACTION_GET: |
| | 775 | objagg_obj = world_obj_get(world, objagg, key_id); |
| | 776 | if (IS_ERR(objagg_obj)) |
| | 777 | return PTR_ERR(objagg_obj); |
| | 778 | break; |
| | 779 | case ACTION_PUT: |
| | 780 | world_obj_put(world, objagg, key_id); |
| | 781 | break; |
| | 782 | } |
| | 783 | |
| | 784 | if (inverse) |
| | 785 | return 0; |
| | 786 | err = check_expect(world, action_item, |
| | 787 | orig_delta_count, orig_root_count); |
| | 788 | if (err) |
| | 789 | goto errout; |
| | 790 | |
| | 791 | err = check_expect_stats(objagg, &action_item->expect_stats, &errmsg); |
| | 792 | if (err) { |
| | 793 | pr_err("Key %u: Stats: %s\n", action_item->key_id, errmsg); |
| | 794 | goto errout; |
| | 795 | } |
| | 796 | |
| | 797 | return 0; |
| | 798 | |
| | 799 | errout: |
| | 800 | /* This can only happen when action is not inversed. |
| | 801 | * So in case of an error, cleanup by doing inverse action. |
| | 802 | */ |
| | 803 | test_delta_action_item(world, objagg, action_item, true); |
| | 804 | return err; |
| | 805 | } |
| | 806 | |
| | 807 | static int test_delta(void) |
| | 808 | { |
| | 809 | struct world world = {}; |
| | 810 | struct objagg *objagg; |
| | 811 | int i; |
| | 812 | int err; |
| | 813 | |
| | 814 | objagg = objagg_create(&delta_ops, NULL, &world); |
| | 815 | if (IS_ERR(objagg)) |
| | 816 | return PTR_ERR(objagg); |
| | 817 | |
| | 818 | for (i = 0; i < ARRAY_SIZE(action_items); i++) { |
| | 819 | err = test_delta_action_item(&world, objagg, |
| | 820 | &action_items[i], false); |
| | 821 | if (err) |
| | 822 | goto err_do_action_item; |
| | 823 | } |
| | 824 | |
| | 825 | objagg_destroy(objagg); |
| | 826 | return 0; |
| | 827 | |
| | 828 | err_do_action_item: |
| | 829 | for (i--; i >= 0; i--) |
| | 830 | test_delta_action_item(&world, objagg, &action_items[i], true); |
| | 831 | |
| | 832 | objagg_destroy(objagg); |
| | 833 | return err; |
| | 834 | } |
| | 835 | |
| | 836 | struct hints_case { |
| | 837 | const unsigned int *key_ids; |
| | 838 | size_t key_ids_count; |
| | 839 | struct expect_stats expect_stats; |
| | 840 | struct expect_stats expect_stats_hints; |
| | 841 | }; |
| | 842 | |
| | 843 | static const unsigned int hints_case_key_ids[] = { |
| | 844 | 1, 7, 3, 5, 3, 1, 30, 8, 8, 5, 6, 8, |
| | 845 | }; |
| | 846 | |
| | 847 | static const struct hints_case hints_case = { |
| | 848 | .key_ids = hints_case_key_ids, |
| | 849 | .key_ids_count = ARRAY_SIZE(hints_case_key_ids), |
| | 850 | .expect_stats = |
| | 851 | EXPECT_STATS(7, ROOT(1, 2, 7), ROOT(7, 1, 4), ROOT(30, 1, 1), |
| | 852 | DELTA(8, 3), DELTA(3, 2), |
| | 853 | DELTA(5, 2), DELTA(6, 1)), |
| | 854 | .expect_stats_hints = |
| | 855 | EXPECT_STATS(7, ROOT(3, 2, 9), ROOT(1, 2, 2), ROOT(30, 1, 1), |
| | 856 | DELTA(8, 3), DELTA(5, 2), |
| | 857 | DELTA(6, 1), DELTA(7, 1)), |
| | 858 | }; |
| | 859 | |
| | 860 | static void __pr_debug_stats(const struct objagg_stats *stats) |
| | 861 | { |
| | 862 | int i; |
| | 863 | |
| | 864 | for (i = 0; i < stats->stats_info_count; i++) |
| | 865 | pr_debug("Stat index %d key %u: u %d, d %d, %s\n", i, |
| | 866 | obj_to_key_id(stats->stats_info[i].objagg_obj), |
| | 867 | stats->stats_info[i].stats.user_count, |
| | 868 | stats->stats_info[i].stats.delta_user_count, |
| | 869 | stats->stats_info[i].is_root ? "root" : "noroot"); |
| | 870 | } |
| | 871 | |
| | 872 | static void pr_debug_stats(struct objagg *objagg) |
| | 873 | { |
| | 874 | const struct objagg_stats *stats; |
| | 875 | |
| | 876 | stats = objagg_stats_get(objagg); |
| | 877 | if (IS_ERR(stats)) |
| | 878 | return; |
| | 879 | __pr_debug_stats(stats); |
| | 880 | objagg_stats_put(stats); |
| | 881 | } |
| | 882 | |
| | 883 | static void pr_debug_hints_stats(struct objagg_hints *objagg_hints) |
| | 884 | { |
| | 885 | const struct objagg_stats *stats; |
| | 886 | |
| | 887 | stats = objagg_hints_stats_get(objagg_hints); |
| | 888 | if (IS_ERR(stats)) |
| | 889 | return; |
| | 890 | __pr_debug_stats(stats); |
| | 891 | objagg_stats_put(stats); |
| | 892 | } |
| | 893 | |
| | 894 | static int check_expect_hints_stats(struct objagg_hints *objagg_hints, |
| | 895 | const struct expect_stats *expect_stats, |
| | 896 | const char **errmsg) |
| | 897 | { |
| | 898 | const struct objagg_stats *stats; |
| | 899 | int err; |
| | 900 | |
| | 901 | stats = objagg_hints_stats_get(objagg_hints); |
| | 902 | if (IS_ERR(stats)) |
| | 903 | return PTR_ERR(stats); |
| | 904 | err = __check_expect_stats(stats, expect_stats, errmsg); |
| | 905 | objagg_stats_put(stats); |
| | 906 | return err; |
| | 907 | } |
| | 908 | |
| | 909 | static int test_hints_case(const struct hints_case *hints_case) |
| | 910 | { |
| | 911 | struct objagg_obj *objagg_obj; |
| | 912 | struct objagg_hints *hints; |
| | 913 | struct world world2 = {}; |
| | 914 | struct world world = {}; |
| | 915 | struct objagg *objagg2; |
| | 916 | struct objagg *objagg; |
| | 917 | const char *errmsg; |
| | 918 | int i; |
| | 919 | int err; |
| | 920 | |
| | 921 | objagg = objagg_create(&delta_ops, NULL, &world); |
| | 922 | if (IS_ERR(objagg)) |
| | 923 | return PTR_ERR(objagg); |
| | 924 | |
| | 925 | for (i = 0; i < hints_case->key_ids_count; i++) { |
| | 926 | objagg_obj = world_obj_get(&world, objagg, |
| | 927 | hints_case->key_ids[i]); |
| | 928 | if (IS_ERR(objagg_obj)) { |
| | 929 | err = PTR_ERR(objagg_obj); |
| | 930 | goto err_world_obj_get; |
| | 931 | } |
| | 932 | } |
| | 933 | |
| | 934 | pr_debug_stats(objagg); |
| | 935 | err = check_expect_stats(objagg, &hints_case->expect_stats, &errmsg); |
| | 936 | if (err) { |
| | 937 | pr_err("Stats: %s\n", errmsg); |
| | 938 | goto err_check_expect_stats; |
| | 939 | } |
| | 940 | |
| | 941 | hints = objagg_hints_get(objagg, OBJAGG_OPT_ALGO_SIMPLE_GREEDY); |
| | 942 | if (IS_ERR(hints)) { |
| | 943 | err = PTR_ERR(hints); |
| | 944 | goto err_hints_get; |
| | 945 | } |
| | 946 | |
| | 947 | pr_debug_hints_stats(hints); |
| | 948 | err = check_expect_hints_stats(hints, &hints_case->expect_stats_hints, |
| | 949 | &errmsg); |
| | 950 | if (err) { |
| | 951 | pr_err("Hints stats: %s\n", errmsg); |
| | 952 | goto err_check_expect_hints_stats; |
| | 953 | } |
| | 954 | |
| | 955 | objagg2 = objagg_create(&delta_ops, hints, &world2); |
| | 956 | if (IS_ERR(objagg2)) |
| | 957 | return PTR_ERR(objagg2); |
| | 958 | |
| | 959 | for (i = 0; i < hints_case->key_ids_count; i++) { |
| | 960 | objagg_obj = world_obj_get(&world2, objagg2, |
| | 961 | hints_case->key_ids[i]); |
| | 962 | if (IS_ERR(objagg_obj)) { |
| | 963 | err = PTR_ERR(objagg_obj); |
| | 964 | goto err_world2_obj_get; |
| | 965 | } |
| | 966 | } |
| | 967 | |
| | 968 | pr_debug_stats(objagg2); |
| | 969 | err = check_expect_stats(objagg2, &hints_case->expect_stats_hints, |
| | 970 | &errmsg); |
| | 971 | if (err) { |
| | 972 | pr_err("Stats2: %s\n", errmsg); |
| | 973 | goto err_check_expect_stats2; |
| | 974 | } |
| | 975 | |
| | 976 | err = 0; |
| | 977 | |
| | 978 | err_check_expect_stats2: |
| | 979 | err_world2_obj_get: |
| | 980 | for (i--; i >= 0; i--) |
| | 981 | world_obj_put(&world2, objagg, hints_case->key_ids[i]); |
| | 982 | i = hints_case->key_ids_count; |
| | 983 | objagg_destroy(objagg2); |
| | 984 | err_check_expect_hints_stats: |
| | 985 | objagg_hints_put(hints); |
| | 986 | err_hints_get: |
| | 987 | err_check_expect_stats: |
| | 988 | err_world_obj_get: |
| | 989 | for (i--; i >= 0; i--) |
| | 990 | world_obj_put(&world, objagg, hints_case->key_ids[i]); |
| | 991 | |
| | 992 | objagg_destroy(objagg); |
| | 993 | return err; |
| | 994 | } |
| | 995 | static int test_hints(void) |
| | 996 | { |
| | 997 | return test_hints_case(&hints_case); |
| | 998 | } |
| | 999 | |
| | 1000 | static int __init test_objagg_init(void) |
| | 1001 | { |
| | 1002 | int err; |
| | 1003 | |
| | 1004 | err = test_nodelta(); |
| | 1005 | if (err) |
| | 1006 | return err; |
| | 1007 | err = test_delta(); |
| | 1008 | if (err) |
| | 1009 | return err; |
| | 1010 | return test_hints(); |
| | 1011 | } |
| | 1012 | |
| | 1013 | static void __exit test_objagg_exit(void) |
| | 1014 | { |
| | 1015 | } |
| | 1016 | |
| | 1017 | module_init(test_objagg_init); |
| | 1018 | module_exit(test_objagg_exit); |
| | 1019 | MODULE_LICENSE("Dual BSD/GPL"); |
| | 1020 | MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>"); |
| | 1021 | MODULE_DESCRIPTION("Test module for objagg"); |
projects / linux-block.git / blame_incremental