1// SPDX-License-Identifier: GPL-2.0 2#include "math.h" 3#include "parse-events.h" 4#include "pmu.h" 5#include "pmus.h" 6#include "tests.h" 7#include <errno.h> 8#include <stdio.h> 9#include <linux/kernel.h> 10#include <linux/zalloc.h> 11#include "debug.h" 12#include "../pmu-events/pmu-events.h" 13#include <perf/evlist.h> 14#include "util/evlist.h" 15#include "util/expr.h" 16#include "util/hashmap.h" 17#include "util/parse-events.h" 18#include "metricgroup.h" 19#include "stat.h" 20 21struct perf_pmu_test_event { 22 /* used for matching against events from generated pmu-events.c */ 23 struct pmu_event event; 24 25 /* used for matching against event aliases */ 26 /* extra events for aliases */ 27 const char *alias_str; 28 29 /* 30 * Note: For when PublicDescription does not exist in the JSON, we 31 * will have no long_desc in pmu_event.long_desc, but long_desc may 32 * be set in the alias. 33 */ 34 const char *alias_long_desc; 35 36 /* PMU which we should match against */ 37 const char *matching_pmu; 38}; 39 40struct perf_pmu_test_pmu { 41 struct perf_pmu pmu; 42 struct perf_pmu_test_event const *aliases[10]; 43}; 44 45static const struct perf_pmu_test_event bp_l1_btb_correct = { 46 .event = { 47 .pmu = "default_core", 48 .name = "bp_l1_btb_correct", 49 .event = "event=0x8a", 50 .desc = "L1 BTB Correction", 51 .topic = "branch", 52 }, 53 .alias_str = "event=0x8a", 54 .alias_long_desc = "L1 BTB Correction", 55}; 56 57static const struct perf_pmu_test_event bp_l2_btb_correct = { 58 .event = { 59 .pmu = "default_core", 60 .name = "bp_l2_btb_correct", 61 .event = "event=0x8b", 62 .desc = "L2 BTB Correction", 63 .topic = "branch", 64 }, 65 .alias_str = "event=0x8b", 66 .alias_long_desc = "L2 BTB Correction", 67}; 68 69static const struct perf_pmu_test_event segment_reg_loads_any = { 70 .event = { 71 .pmu = "default_core", 72 .name = "segment_reg_loads.any", 73 .event = "event=6,period=200000,umask=0x80", 74 .desc = "Number of segment register loads", 75 .topic = "other", 76 }, 77 .alias_str = "event=0x6,period=0x30d40,umask=0x80", 78 .alias_long_desc = "Number of segment register loads", 79}; 80 81static const struct perf_pmu_test_event dispatch_blocked_any = { 82 .event = { 83 .pmu = "default_core", 84 .name = "dispatch_blocked.any", 85 .event = "event=9,period=200000,umask=0x20", 86 .desc = "Memory cluster signals to block micro-op dispatch for any reason", 87 .topic = "other", 88 }, 89 .alias_str = "event=0x9,period=0x30d40,umask=0x20", 90 .alias_long_desc = "Memory cluster signals to block micro-op dispatch for any reason", 91}; 92 93static const struct perf_pmu_test_event eist_trans = { 94 .event = { 95 .pmu = "default_core", 96 .name = "eist_trans", 97 .event = "event=0x3a,period=200000", 98 .desc = "Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions", 99 .topic = "other", 100 }, 101 .alias_str = "event=0x3a,period=0x30d40", 102 .alias_long_desc = "Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions", 103}; 104 105static const struct perf_pmu_test_event l3_cache_rd = { 106 .event = { 107 .pmu = "default_core", 108 .name = "l3_cache_rd", 109 .event = "event=0x40", 110 .desc = "L3 cache access, read", 111 .long_desc = "Attributable Level 3 cache access, read", 112 .topic = "cache", 113 }, 114 .alias_str = "event=0x40", 115 .alias_long_desc = "Attributable Level 3 cache access, read", 116}; 117 118static const struct perf_pmu_test_event *core_events[] = { 119 &bp_l1_btb_correct, 120 &bp_l2_btb_correct, 121 &segment_reg_loads_any, 122 &dispatch_blocked_any, 123 &eist_trans, 124 &l3_cache_rd, 125 NULL 126}; 127 128static const struct perf_pmu_test_event uncore_hisi_ddrc_flux_wcmd = { 129 .event = { 130 .name = "uncore_hisi_ddrc.flux_wcmd", 131 .event = "event=2", 132 .desc = "DDRC write commands", 133 .topic = "uncore", 134 .long_desc = "DDRC write commands", 135 .pmu = "hisi_sccl,ddrc", 136 }, 137 .alias_str = "event=0x2", 138 .alias_long_desc = "DDRC write commands", 139 .matching_pmu = "hisi_sccl1_ddrc2", 140}; 141 142static const struct perf_pmu_test_event unc_cbo_xsnp_response_miss_eviction = { 143 .event = { 144 .name = "unc_cbo_xsnp_response.miss_eviction", 145 .event = "event=0x22,umask=0x81", 146 .desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core", 147 .topic = "uncore", 148 .long_desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core", 149 .pmu = "uncore_cbox", 150 }, 151 .alias_str = "event=0x22,umask=0x81", 152 .alias_long_desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core", 153 .matching_pmu = "uncore_cbox_0", 154}; 155 156static const struct perf_pmu_test_event uncore_hyphen = { 157 .event = { 158 .name = "event-hyphen", 159 .event = "event=0xe0", 160 .desc = "UNC_CBO_HYPHEN", 161 .topic = "uncore", 162 .long_desc = "UNC_CBO_HYPHEN", 163 .pmu = "uncore_cbox", 164 }, 165 .alias_str = "event=0xe0", 166 .alias_long_desc = "UNC_CBO_HYPHEN", 167 .matching_pmu = "uncore_cbox_0", 168}; 169 170static const struct perf_pmu_test_event uncore_two_hyph = { 171 .event = { 172 .name = "event-two-hyph", 173 .event = "event=0xc0", 174 .desc = "UNC_CBO_TWO_HYPH", 175 .topic = "uncore", 176 .long_desc = "UNC_CBO_TWO_HYPH", 177 .pmu = "uncore_cbox", 178 }, 179 .alias_str = "event=0xc0", 180 .alias_long_desc = "UNC_CBO_TWO_HYPH", 181 .matching_pmu = "uncore_cbox_0", 182}; 183 184static const struct perf_pmu_test_event uncore_hisi_l3c_rd_hit_cpipe = { 185 .event = { 186 .name = "uncore_hisi_l3c.rd_hit_cpipe", 187 .event = "event=7", 188 .desc = "Total read hits", 189 .topic = "uncore", 190 .long_desc = "Total read hits", 191 .pmu = "hisi_sccl,l3c", 192 }, 193 .alias_str = "event=0x7", 194 .alias_long_desc = "Total read hits", 195 .matching_pmu = "hisi_sccl3_l3c7", 196}; 197 198static const struct perf_pmu_test_event uncore_imc_free_running_cache_miss = { 199 .event = { 200 .name = "uncore_imc_free_running.cache_miss", 201 .event = "event=0x12", 202 .desc = "Total cache misses", 203 .topic = "uncore", 204 .long_desc = "Total cache misses", 205 .pmu = "uncore_imc_free_running", 206 }, 207 .alias_str = "event=0x12", 208 .alias_long_desc = "Total cache misses", 209 .matching_pmu = "uncore_imc_free_running_0", 210}; 211 212static const struct perf_pmu_test_event uncore_imc_cache_hits = { 213 .event = { 214 .name = "uncore_imc.cache_hits", 215 .event = "event=0x34", 216 .desc = "Total cache hits", 217 .topic = "uncore", 218 .long_desc = "Total cache hits", 219 .pmu = "uncore_imc", 220 }, 221 .alias_str = "event=0x34", 222 .alias_long_desc = "Total cache hits", 223 .matching_pmu = "uncore_imc_0", 224}; 225 226static const struct perf_pmu_test_event *uncore_events[] = { 227 &uncore_hisi_ddrc_flux_wcmd, 228 &unc_cbo_xsnp_response_miss_eviction, 229 &uncore_hyphen, 230 &uncore_two_hyph, 231 &uncore_hisi_l3c_rd_hit_cpipe, 232 &uncore_imc_free_running_cache_miss, 233 &uncore_imc_cache_hits, 234 NULL 235}; 236 237static const struct perf_pmu_test_event sys_ddr_pmu_write_cycles = { 238 .event = { 239 .name = "sys_ddr_pmu.write_cycles", 240 .event = "event=0x2b", 241 .desc = "ddr write-cycles event", 242 .topic = "uncore", 243 .pmu = "uncore_sys_ddr_pmu", 244 .compat = "v8", 245 }, 246 .alias_str = "event=0x2b", 247 .alias_long_desc = "ddr write-cycles event", 248 .matching_pmu = "uncore_sys_ddr_pmu0", 249}; 250 251static const struct perf_pmu_test_event sys_ccn_pmu_read_cycles = { 252 .event = { 253 .name = "sys_ccn_pmu.read_cycles", 254 .event = "config=0x2c", 255 .desc = "ccn read-cycles event", 256 .topic = "uncore", 257 .pmu = "uncore_sys_ccn_pmu", 258 .compat = "0x01", 259 }, 260 .alias_str = "config=0x2c", 261 .alias_long_desc = "ccn read-cycles event", 262 .matching_pmu = "uncore_sys_ccn_pmu4", 263}; 264 265static const struct perf_pmu_test_event sys_cmn_pmu_hnf_cache_miss = { 266 .event = { 267 .name = "sys_cmn_pmu.hnf_cache_miss", 268 .event = "eventid=1,type=5", 269 .desc = "Counts total cache misses in first lookup result (high priority)", 270 .topic = "uncore", 271 .pmu = "uncore_sys_cmn_pmu", 272 .compat = "(434|436|43c|43a).*", 273 }, 274 .alias_str = "eventid=0x1,type=0x5", 275 .alias_long_desc = "Counts total cache misses in first lookup result (high priority)", 276 .matching_pmu = "uncore_sys_cmn_pmu0", 277}; 278 279static const struct perf_pmu_test_event *sys_events[] = { 280 &sys_ddr_pmu_write_cycles, 281 &sys_ccn_pmu_read_cycles, 282 &sys_cmn_pmu_hnf_cache_miss, 283 NULL 284}; 285 286static bool is_same(const char *reference, const char *test) 287{ 288 if (!reference && !test) 289 return true; 290 291 if (reference && !test) 292 return false; 293 294 if (!reference && test) 295 return false; 296 297 return !strcmp(reference, test); 298} 299 300static int compare_pmu_events(const struct pmu_event *e1, const struct pmu_event *e2) 301{ 302 if (!is_same(e1->name, e2->name)) { 303 pr_debug2("testing event e1 %s: mismatched name string, %s vs %s\n", 304 e1->name, e1->name, e2->name); 305 return -1; 306 } 307 308 if (!is_same(e1->compat, e2->compat)) { 309 pr_debug2("testing event e1 %s: mismatched compat string, %s vs %s\n", 310 e1->name, e1->compat, e2->compat); 311 return -1; 312 } 313 314 if (!is_same(e1->event, e2->event)) { 315 pr_debug2("testing event e1 %s: mismatched event, %s vs %s\n", 316 e1->name, e1->event, e2->event); 317 return -1; 318 } 319 320 if (!is_same(e1->desc, e2->desc)) { 321 pr_debug2("testing event e1 %s: mismatched desc, %s vs %s\n", 322 e1->name, e1->desc, e2->desc); 323 return -1; 324 } 325 326 if (!is_same(e1->topic, e2->topic)) { 327 pr_debug2("testing event e1 %s: mismatched topic, %s vs %s\n", 328 e1->name, e1->topic, e2->topic); 329 return -1; 330 } 331 332 if (!is_same(e1->long_desc, e2->long_desc)) { 333 pr_debug2("testing event e1 %s: mismatched long_desc, %s vs %s\n", 334 e1->name, e1->long_desc, e2->long_desc); 335 return -1; 336 } 337 338 if (!is_same(e1->pmu, e2->pmu)) { 339 pr_debug2("testing event e1 %s: mismatched pmu string, %s vs %s\n", 340 e1->name, e1->pmu, e2->pmu); 341 return -1; 342 } 343 344 if (!is_same(e1->unit, e2->unit)) { 345 pr_debug2("testing event e1 %s: mismatched unit, %s vs %s\n", 346 e1->name, e1->unit, e2->unit); 347 return -1; 348 } 349 350 if (e1->perpkg != e2->perpkg) { 351 pr_debug2("testing event e1 %s: mismatched perpkg, %d vs %d\n", 352 e1->name, e1->perpkg, e2->perpkg); 353 return -1; 354 } 355 356 if (e1->deprecated != e2->deprecated) { 357 pr_debug2("testing event e1 %s: mismatched deprecated, %d vs %d\n", 358 e1->name, e1->deprecated, e2->deprecated); 359 return -1; 360 } 361 362 return 0; 363} 364 365static int compare_alias_to_test_event(struct pmu_event_info *alias, 366 struct perf_pmu_test_event const *test_event, 367 char const *pmu_name) 368{ 369 struct pmu_event const *event = &test_event->event; 370 371 /* An alias was found, ensure everything is in order */ 372 if (!is_same(alias->name, event->name)) { 373 pr_debug("testing aliases PMU %s: mismatched name, %s vs %s\n", 374 pmu_name, alias->name, event->name); 375 return -1; 376 } 377 378 if (!is_same(alias->desc, event->desc)) { 379 pr_debug("testing aliases PMU %s: mismatched desc, %s vs %s\n", 380 pmu_name, alias->desc, event->desc); 381 return -1; 382 } 383 384 if (!is_same(alias->long_desc, test_event->alias_long_desc)) { 385 pr_debug("testing aliases PMU %s: mismatched long_desc, %s vs %s\n", 386 pmu_name, alias->long_desc, 387 test_event->alias_long_desc); 388 return -1; 389 } 390 391 if (!is_same(alias->topic, event->topic)) { 392 pr_debug("testing aliases PMU %s: mismatched topic, %s vs %s\n", 393 pmu_name, alias->topic, event->topic); 394 return -1; 395 } 396 397 if (!is_same(alias->str, test_event->alias_str)) { 398 pr_debug("testing aliases PMU %s: mismatched str, %s vs %s\n", 399 pmu_name, alias->str, test_event->alias_str); 400 return -1; 401 } 402 403 if (!is_same(alias->long_desc, test_event->alias_long_desc)) { 404 pr_debug("testing aliases PMU %s: mismatched long desc, %s vs %s\n", 405 pmu_name, alias->str, test_event->alias_long_desc); 406 return -1; 407 } 408 409 if (!is_same(alias->pmu_name, test_event->event.pmu) && 410 !is_same(alias->pmu_name, "default_core")) { 411 pr_debug("testing aliases PMU %s: mismatched pmu_name, %s vs %s\n", 412 pmu_name, alias->pmu_name, test_event->event.pmu); 413 return -1; 414 } 415 416 return 0; 417} 418 419static int test__pmu_event_table_core_callback(const struct pmu_event *pe, 420 const struct pmu_events_table *table __maybe_unused, 421 void *data) 422{ 423 int *map_events = data; 424 struct perf_pmu_test_event const **test_event_table; 425 bool found = false; 426 427 if (strcmp(pe->pmu, "default_core")) 428 test_event_table = &uncore_events[0]; 429 else 430 test_event_table = &core_events[0]; 431 432 for (; *test_event_table; test_event_table++) { 433 struct perf_pmu_test_event const *test_event = *test_event_table; 434 struct pmu_event const *event = &test_event->event; 435 436 if (strcmp(pe->name, event->name)) 437 continue; 438 found = true; 439 (*map_events)++; 440 441 if (compare_pmu_events(pe, event)) 442 return -1; 443 444 pr_debug("testing event table %s: pass\n", pe->name); 445 } 446 if (!found) { 447 pr_err("testing event table: could not find event %s\n", pe->name); 448 return -1; 449 } 450 return 0; 451} 452 453static int test__pmu_event_table_sys_callback(const struct pmu_event *pe, 454 const struct pmu_events_table *table __maybe_unused, 455 void *data) 456{ 457 int *map_events = data; 458 struct perf_pmu_test_event const **test_event_table; 459 bool found = false; 460 461 test_event_table = &sys_events[0]; 462 463 for (; *test_event_table; test_event_table++) { 464 struct perf_pmu_test_event const *test_event = *test_event_table; 465 struct pmu_event const *event = &test_event->event; 466 467 if (strcmp(pe->name, event->name)) 468 continue; 469 found = true; 470 (*map_events)++; 471 472 if (compare_pmu_events(pe, event)) 473 return TEST_FAIL; 474 475 pr_debug("testing sys event table %s: pass\n", pe->name); 476 } 477 if (!found) { 478 pr_debug("testing sys event table: could not find event %s\n", pe->name); 479 return TEST_FAIL; 480 } 481 return TEST_OK; 482} 483 484/* Verify generated events from pmu-events.c are as expected */ 485static int test__pmu_event_table(struct test_suite *test __maybe_unused, 486 int subtest __maybe_unused) 487{ 488 const struct pmu_events_table *sys_event_table = 489 find_sys_events_table("pmu_events__test_soc_sys"); 490 const struct pmu_events_table *table = find_core_events_table("testarch", "testcpu"); 491 int map_events = 0, expected_events, err; 492 493 /* ignore 3x sentinels */ 494 expected_events = ARRAY_SIZE(core_events) + 495 ARRAY_SIZE(uncore_events) + 496 ARRAY_SIZE(sys_events) - 3; 497 498 if (!table || !sys_event_table) 499 return -1; 500 501 err = pmu_events_table__for_each_event(table, /*pmu=*/ NULL, 502 test__pmu_event_table_core_callback, 503 &map_events); 504 if (err) 505 return err; 506 507 err = pmu_events_table__for_each_event(sys_event_table, /*pmu=*/ NULL, 508 test__pmu_event_table_sys_callback, 509 &map_events); 510 if (err) 511 return err; 512 513 if (map_events != expected_events) { 514 pr_err("testing event table: found %d, but expected %d\n", 515 map_events, expected_events); 516 return TEST_FAIL; 517 } 518 519 return 0; 520} 521 522struct test_core_pmu_event_aliases_cb_args { 523 struct perf_pmu_test_event const *test_event; 524 int *count; 525}; 526 527static int test_core_pmu_event_aliases_cb(void *state, struct pmu_event_info *alias) 528{ 529 struct test_core_pmu_event_aliases_cb_args *args = state; 530 531 if (compare_alias_to_test_event(alias, args->test_event, alias->pmu->name)) 532 return -1; 533 (*args->count)++; 534 pr_debug2("testing aliases core PMU %s: matched event %s\n", 535 alias->pmu_name, alias->name); 536 return 0; 537} 538 539/* Verify aliases are as expected */ 540static int __test_core_pmu_event_aliases(const char *pmu_name, int *count) 541{ 542 struct perf_pmu_test_event const **test_event_table; 543 struct perf_pmu *pmu; 544 int res = 0; 545 const struct pmu_events_table *table = find_core_events_table("testarch", "testcpu"); 546 547 if (!table) 548 return -1; 549 550 test_event_table = &core_events[0]; 551 552 pmu = zalloc(sizeof(*pmu)); 553 if (!pmu) 554 return -1; 555 556 INIT_LIST_HEAD(&pmu->format); 557 INIT_LIST_HEAD(&pmu->aliases); 558 INIT_LIST_HEAD(&pmu->caps); 559 INIT_LIST_HEAD(&pmu->list); 560 pmu->name = strdup(pmu_name); 561 pmu->is_core = true; 562 563 pmu->events_table = table; 564 pmu_add_cpu_aliases_table(pmu, table); 565 pmu->cpu_aliases_added = true; 566 pmu->sysfs_aliases_loaded = true; 567 568 res = pmu_events_table__find_event(table, pmu, "bp_l1_btb_correct", NULL, NULL); 569 if (res != 0) { 570 pr_debug("Missing test event in test architecture"); 571 return res; 572 } 573 for (; *test_event_table; test_event_table++) { 574 struct perf_pmu_test_event test_event = **test_event_table; 575 struct pmu_event const *event = &test_event.event; 576 struct test_core_pmu_event_aliases_cb_args args = { 577 .test_event = &test_event, 578 .count = count, 579 }; 580 int err; 581 582 test_event.event.pmu = pmu_name; 583 err = perf_pmu__find_event(pmu, event->name, &args, 584 test_core_pmu_event_aliases_cb); 585 if (err) 586 res = err; 587 } 588 perf_pmu__delete(pmu); 589 590 return res; 591} 592 593static int __test_uncore_pmu_event_aliases(struct perf_pmu_test_pmu *test_pmu) 594{ 595 int alias_count = 0, to_match_count = 0, matched_count = 0; 596 struct perf_pmu_test_event const **table; 597 struct perf_pmu *pmu = &test_pmu->pmu; 598 const char *pmu_name = pmu->name; 599 const struct pmu_events_table *events_table; 600 int res = 0; 601 602 events_table = find_core_events_table("testarch", "testcpu"); 603 if (!events_table) 604 return -1; 605 pmu->events_table = events_table; 606 pmu_add_cpu_aliases_table(pmu, events_table); 607 pmu->cpu_aliases_added = true; 608 pmu->sysfs_aliases_loaded = true; 609 pmu_add_sys_aliases(pmu); 610 611 /* Count how many aliases we generated */ 612 alias_count = perf_pmu__num_events(pmu); 613 614 /* Count how many aliases we expect from the known table */ 615 for (table = &test_pmu->aliases[0]; *table; table++) 616 to_match_count++; 617 618 if (alias_count != to_match_count) { 619 pr_debug("testing aliases uncore PMU %s: mismatch expected aliases (%d) vs found (%d)\n", 620 pmu_name, to_match_count, alias_count); 621 return -1; 622 } 623 624 for (table = &test_pmu->aliases[0]; *table; table++) { 625 struct perf_pmu_test_event test_event = **table; 626 struct pmu_event const *event = &test_event.event; 627 int err; 628 struct test_core_pmu_event_aliases_cb_args args = { 629 .test_event = &test_event, 630 .count = &matched_count, 631 }; 632 633 if (strcmp(pmu_name, test_event.matching_pmu)) { 634 pr_debug("testing aliases uncore PMU %s: mismatched matching_pmu, %s vs %s\n", 635 pmu_name, test_event.matching_pmu, pmu_name); 636 return -1; 637 } 638 639 err = perf_pmu__find_event(pmu, event->name, &args, 640 test_core_pmu_event_aliases_cb); 641 if (err) { 642 res = err; 643 pr_debug("testing aliases uncore PMU %s: could not match alias %s\n", 644 pmu_name, event->name); 645 return -1; 646 } 647 } 648 649 if (alias_count != matched_count) { 650 pr_debug("testing aliases uncore PMU %s: mismatch found aliases (%d) vs matched (%d)\n", 651 pmu_name, matched_count, alias_count); 652 res = -1; 653 } 654 return res; 655} 656 657static struct perf_pmu_test_pmu test_pmus[] = { 658 { 659 .pmu = { 660 .name = "hisi_sccl1_ddrc2", 661 .is_uncore = 1, 662 }, 663 .aliases = { 664 &uncore_hisi_ddrc_flux_wcmd, 665 }, 666 }, 667 { 668 .pmu = { 669 .name = "uncore_cbox_0", 670 .is_uncore = 1, 671 }, 672 .aliases = { 673 &unc_cbo_xsnp_response_miss_eviction, 674 &uncore_hyphen, 675 &uncore_two_hyph, 676 }, 677 }, 678 { 679 .pmu = { 680 .name = "hisi_sccl3_l3c7", 681 .is_uncore = 1, 682 }, 683 .aliases = { 684 &uncore_hisi_l3c_rd_hit_cpipe, 685 }, 686 }, 687 { 688 .pmu = { 689 .name = "uncore_imc_free_running_0", 690 .is_uncore = 1, 691 }, 692 .aliases = { 693 &uncore_imc_free_running_cache_miss, 694 }, 695 }, 696 { 697 .pmu = { 698 .name = "uncore_imc_0", 699 .is_uncore = 1, 700 }, 701 .aliases = { 702 &uncore_imc_cache_hits, 703 }, 704 }, 705 { 706 .pmu = { 707 .name = "uncore_sys_ddr_pmu0", 708 .is_uncore = 1, 709 .id = "v8", 710 }, 711 .aliases = { 712 &sys_ddr_pmu_write_cycles, 713 }, 714 }, 715 { 716 .pmu = { 717 .name = "uncore_sys_ccn_pmu4", 718 .is_uncore = 1, 719 .id = "0x01", 720 }, 721 .aliases = { 722 &sys_ccn_pmu_read_cycles, 723 }, 724 }, 725 { 726 .pmu = { 727 .name = (char *)"uncore_sys_cmn_pmu0", 728 .is_uncore = 1, 729 .id = (char *)"43401", 730 }, 731 .aliases = { 732 &sys_cmn_pmu_hnf_cache_miss, 733 }, 734 }, 735 { 736 .pmu = { 737 .name = (char *)"uncore_sys_cmn_pmu0", 738 .is_uncore = 1, 739 .id = (char *)"43602", 740 }, 741 .aliases = { 742 &sys_cmn_pmu_hnf_cache_miss, 743 }, 744 }, 745 { 746 .pmu = { 747 .name = (char *)"uncore_sys_cmn_pmu0", 748 .is_uncore = 1, 749 .id = (char *)"43c03", 750 }, 751 .aliases = { 752 &sys_cmn_pmu_hnf_cache_miss, 753 }, 754 }, 755 { 756 .pmu = { 757 .name = (char *)"uncore_sys_cmn_pmu0", 758 .is_uncore = 1, 759 .id = (char *)"43a01", 760 }, 761 .aliases = { 762 &sys_cmn_pmu_hnf_cache_miss, 763 }, 764 } 765}; 766 767/* Test that aliases generated are as expected */ 768static int test__aliases(struct test_suite *test __maybe_unused, 769 int subtest __maybe_unused) 770{ 771 struct perf_pmu *pmu = NULL; 772 unsigned long i; 773 774 while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { 775 int count = 0; 776 777 if (list_empty(&pmu->format)) { 778 pr_debug2("skipping testing core PMU %s\n", pmu->name); 779 continue; 780 } 781 782 if (__test_core_pmu_event_aliases(pmu->name, &count)) { 783 pr_debug("testing core PMU %s aliases: failed\n", pmu->name); 784 return -1; 785 } 786 787 if (count == 0) { 788 pr_debug("testing core PMU %s aliases: no events to match\n", 789 pmu->name); 790 return -1; 791 } 792 793 pr_debug("testing core PMU %s aliases: pass\n", pmu->name); 794 } 795 796 for (i = 0; i < ARRAY_SIZE(test_pmus); i++) { 797 int res; 798 799 INIT_LIST_HEAD(&test_pmus[i].pmu.format); 800 INIT_LIST_HEAD(&test_pmus[i].pmu.aliases); 801 INIT_LIST_HEAD(&test_pmus[i].pmu.caps); 802 803 res = __test_uncore_pmu_event_aliases(&test_pmus[i]); 804 if (res) 805 return res; 806 } 807 808 return 0; 809} 810 811static bool is_number(const char *str) 812{ 813 char *end_ptr; 814 double v; 815 816 errno = 0; 817 v = strtod(str, &end_ptr); 818 (void)v; // We're not interested in this value, only if it is valid 819 return errno == 0 && end_ptr != str; 820} 821 822static int check_parse_id(const char *id, struct parse_events_error *error, 823 struct perf_pmu *fake_pmu) 824{ 825 struct evlist *evlist; 826 int ret; 827 char *dup, *cur; 828 829 /* Numbers are always valid. */ 830 if (is_number(id)) 831 return 0; 832 833 evlist = evlist__new(); 834 if (!evlist) 835 return -ENOMEM; 836 837 dup = strdup(id); 838 if (!dup) 839 return -ENOMEM; 840 841 for (cur = strchr(dup, '@') ; cur; cur = strchr(++cur, '@')) 842 *cur = '/'; 843 844 ret = __parse_events(evlist, dup, /*pmu_filter=*/NULL, error, fake_pmu, 845 /*warn_if_reordered=*/true); 846 free(dup); 847 848 evlist__delete(evlist); 849 return ret; 850} 851 852static int check_parse_fake(const char *id) 853{ 854 struct parse_events_error error; 855 int ret; 856 857 parse_events_error__init(&error); 858 ret = check_parse_id(id, &error, &perf_pmu__fake); 859 parse_events_error__exit(&error); 860 return ret; 861} 862 863struct metric { 864 struct list_head list; 865 struct metric_ref metric_ref; 866}; 867 868static int test__parsing_callback(const struct pmu_metric *pm, 869 const struct pmu_metrics_table *table, 870 void *data) 871{ 872 int *failures = data; 873 int k; 874 struct evlist *evlist; 875 struct perf_cpu_map *cpus; 876 struct evsel *evsel; 877 struct rblist metric_events = { 878 .nr_entries = 0, 879 }; 880 int err = 0; 881 882 if (!pm->metric_expr) 883 return 0; 884 885 pr_debug("Found metric '%s'\n", pm->metric_name); 886 (*failures)++; 887 888 /* 889 * We need to prepare evlist for stat mode running on CPU 0 890 * because that's where all the stats are going to be created. 891 */ 892 evlist = evlist__new(); 893 if (!evlist) 894 return -ENOMEM; 895 896 cpus = perf_cpu_map__new("0"); 897 if (!cpus) { 898 evlist__delete(evlist); 899 return -ENOMEM; 900 } 901 902 perf_evlist__set_maps(&evlist->core, cpus, NULL); 903 904 err = metricgroup__parse_groups_test(evlist, table, pm->metric_name, &metric_events); 905 if (err) { 906 if (!strcmp(pm->metric_name, "M1") || !strcmp(pm->metric_name, "M2") || 907 !strcmp(pm->metric_name, "M3")) { 908 (*failures)--; 909 pr_debug("Expected broken metric %s skipping\n", pm->metric_name); 910 err = 0; 911 } 912 goto out_err; 913 } 914 915 err = evlist__alloc_stats(/*config=*/NULL, evlist, /*alloc_raw=*/false); 916 if (err) 917 goto out_err; 918 /* 919 * Add all ids with a made up value. The value may trigger divide by 920 * zero when subtracted and so try to make them unique. 921 */ 922 k = 1; 923 evlist__alloc_aggr_stats(evlist, 1); 924 evlist__for_each_entry(evlist, evsel) { 925 evsel->stats->aggr->counts.val = k; 926 if (evsel__name_is(evsel, "duration_time")) 927 update_stats(&walltime_nsecs_stats, k); 928 k++; 929 } 930 evlist__for_each_entry(evlist, evsel) { 931 struct metric_event *me = metricgroup__lookup(&metric_events, evsel, false); 932 933 if (me != NULL) { 934 struct metric_expr *mexp; 935 936 list_for_each_entry (mexp, &me->head, nd) { 937 if (strcmp(mexp->metric_name, pm->metric_name)) 938 continue; 939 pr_debug("Result %f\n", test_generic_metric(mexp, 0)); 940 err = 0; 941 (*failures)--; 942 goto out_err; 943 } 944 } 945 } 946 pr_debug("Didn't find parsed metric %s", pm->metric_name); 947 err = 1; 948out_err: 949 if (err) 950 pr_debug("Broken metric %s\n", pm->metric_name); 951 952 /* ... cleanup. */ 953 metricgroup__rblist_exit(&metric_events); 954 evlist__free_stats(evlist); 955 perf_cpu_map__put(cpus); 956 evlist__delete(evlist); 957 return err; 958} 959 960static int test__parsing(struct test_suite *test __maybe_unused, 961 int subtest __maybe_unused) 962{ 963 int failures = 0; 964 965 pmu_for_each_core_metric(test__parsing_callback, &failures); 966 pmu_for_each_sys_metric(test__parsing_callback, &failures); 967 968 return failures == 0 ? TEST_OK : TEST_FAIL; 969} 970 971struct test_metric { 972 const char *str; 973}; 974 975static struct test_metric metrics[] = { 976 { "(unc_p_power_state_occupancy.cores_c0 / unc_p_clockticks) * 100." }, 977 { "imx8_ddr0@read\\-cycles@ * 4 * 4", }, 978 { "imx8_ddr0@axid\\-read\\,axi_mask\\=0xffff\\,axi_id\\=0x0000@ * 4", }, 979 { "(cstate_pkg@c2\\-residency@ / msr@tsc@) * 100", }, 980 { "(imx8_ddr0@read\\-cycles@ + imx8_ddr0@write\\-cycles@)", }, 981}; 982 983static int metric_parse_fake(const char *metric_name, const char *str) 984{ 985 struct expr_parse_ctx *ctx; 986 struct hashmap_entry *cur; 987 double result; 988 int ret = -1; 989 size_t bkt; 990 int i; 991 992 pr_debug("parsing '%s': '%s'\n", metric_name, str); 993 994 ctx = expr__ctx_new(); 995 if (!ctx) { 996 pr_debug("expr__ctx_new failed"); 997 return TEST_FAIL; 998 } 999 ctx->sctx.is_test = true; 1000 if (expr__find_ids(str, NULL, ctx) < 0) { 1001 pr_err("expr__find_ids failed\n"); 1002 return -1; 1003 } 1004 1005 /* 1006 * Add all ids with a made up value. The value may 1007 * trigger divide by zero when subtracted and so try to 1008 * make them unique. 1009 */ 1010 i = 1; 1011 hashmap__for_each_entry(ctx->ids, cur, bkt) 1012 expr__add_id_val(ctx, strdup(cur->pkey), i++); 1013 1014 hashmap__for_each_entry(ctx->ids, cur, bkt) { 1015 if (check_parse_fake(cur->pkey)) { 1016 pr_err("check_parse_fake failed\n"); 1017 goto out; 1018 } 1019 } 1020 1021 ret = 0; 1022 if (expr__parse(&result, ctx, str)) { 1023 /* 1024 * Parsing failed, make numbers go from large to small which can 1025 * resolve divide by zero issues. 1026 */ 1027 i = 1024; 1028 hashmap__for_each_entry(ctx->ids, cur, bkt) 1029 expr__add_id_val(ctx, strdup(cur->pkey), i--); 1030 if (expr__parse(&result, ctx, str)) { 1031 pr_err("expr__parse failed for %s\n", metric_name); 1032 /* The following have hard to avoid divide by zero. */ 1033 if (!strcmp(metric_name, "tma_clears_resteers") || 1034 !strcmp(metric_name, "tma_mispredicts_resteers")) 1035 ret = 0; 1036 else 1037 ret = -1; 1038 } 1039 } 1040 1041out: 1042 expr__ctx_free(ctx); 1043 return ret; 1044} 1045 1046static int test__parsing_fake_callback(const struct pmu_metric *pm, 1047 const struct pmu_metrics_table *table __maybe_unused, 1048 void *data __maybe_unused) 1049{ 1050 return metric_parse_fake(pm->metric_name, pm->metric_expr); 1051} 1052 1053/* 1054 * Parse all the metrics for current architecture, 1055 * or all defined cpus via the 'fake_pmu' 1056 * in parse_events. 1057 */ 1058static int test__parsing_fake(struct test_suite *test __maybe_unused, 1059 int subtest __maybe_unused) 1060{ 1061 int err = 0; 1062 1063 for (size_t i = 0; i < ARRAY_SIZE(metrics); i++) { 1064 err = metric_parse_fake("", metrics[i].str); 1065 if (err) 1066 return err; 1067 } 1068 1069 err = pmu_for_each_core_metric(test__parsing_fake_callback, NULL); 1070 if (err) 1071 return err; 1072 1073 return pmu_for_each_sys_metric(test__parsing_fake_callback, NULL); 1074} 1075 1076static int test__parsing_threshold_callback(const struct pmu_metric *pm, 1077 const struct pmu_metrics_table *table __maybe_unused, 1078 void *data __maybe_unused) 1079{ 1080 if (!pm->metric_threshold) 1081 return 0; 1082 return metric_parse_fake(pm->metric_name, pm->metric_threshold); 1083} 1084 1085static int test__parsing_threshold(struct test_suite *test __maybe_unused, 1086 int subtest __maybe_unused) 1087{ 1088 int err = 0; 1089 1090 err = pmu_for_each_core_metric(test__parsing_threshold_callback, NULL); 1091 if (err) 1092 return err; 1093 1094 return pmu_for_each_sys_metric(test__parsing_threshold_callback, NULL); 1095} 1096 1097static struct test_case pmu_events_tests[] = { 1098 TEST_CASE("PMU event table sanity", pmu_event_table), 1099 TEST_CASE("PMU event map aliases", aliases), 1100 TEST_CASE_REASON("Parsing of PMU event table metrics", parsing, 1101 "some metrics failed"), 1102 TEST_CASE("Parsing of PMU event table metrics with fake PMUs", parsing_fake), 1103 TEST_CASE("Parsing of metric thresholds with fake PMUs", parsing_threshold), 1104 { .name = NULL, } 1105}; 1106 1107struct test_suite suite__pmu_events = { 1108 .desc = "PMU events", 1109 .test_cases = pmu_events_tests, 1110}; 1111