1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2018, Matthew Macy 5 * Copyright (c) 2021, The FreeBSD Foundation 6 * 7 * Portions of this software were developed by Mitchell Horne 8 * under sponsorship from the FreeBSD Foundation. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 */ 32 33 #include <sys/types.h> 34 #include <sys/errno.h> 35 #include <sys/pmc.h> 36 #include <sys/sysctl.h> 37 #include <stddef.h> 38 #include <stdlib.h> 39 #include <limits.h> 40 #include <regex.h> 41 #include <string.h> 42 #include <pmc.h> 43 #include <pmclog.h> 44 #include <assert.h> 45 #include <libpmcstat.h> 46 #include "pmu-events/pmu-events.h" 47 48 struct pmu_alias { 49 const char *pa_alias; 50 const char *pa_name; 51 }; 52 53 #if defined(__amd64__) || defined(__i386__) 54 typedef enum { 55 PMU_INVALID, 56 PMU_INTEL, 57 PMU_AMD, 58 } pmu_mfr_t; 59 60 static struct pmu_alias pmu_intel_alias_table[] = { 61 {"UNHALTED_CORE_CYCLES", "cpu_clk_unhalted.thread"}, 62 {"UNHALTED-CORE-CYCLES", "cpu_clk_unhalted.thread"}, 63 {"LLC_MISSES", "LONGEST_LAT_CACHE.MISS"}, 64 {"LLC-MISSES", "LONGEST_LAT_CACHE.MISS"}, 65 {"LLC_REFERENCE", "LONGEST_LAT_CACHE.REFERENCE"}, 66 {"LLC-REFERENCE", "LONGEST_LAT_CACHE.REFERENCE"}, 67 {"LLC_MISS_RHITM", "mem_load_l3_miss_retired.remote_hitm"}, 68 {"LLC-MISS-RHITM", "mem_load_l3_miss_retired.remote_hitm"}, 69 {"RESOURCE_STALL", "RESOURCE_STALLS.ANY"}, 70 {"RESOURCE_STALLS_ANY", "RESOURCE_STALLS.ANY"}, 71 {"BRANCH_INSTRUCTION_RETIRED", "BR_INST_RETIRED.ALL_BRANCHES"}, 72 {"BRANCH-INSTRUCTION-RETIRED", "BR_INST_RETIRED.ALL_BRANCHES"}, 73 {"BRANCH_MISSES_RETIRED", "BR_MISP_RETIRED.ALL_BRANCHES"}, 74 {"BRANCH-MISSES-RETIRED", "BR_MISP_RETIRED.ALL_BRANCHES"}, 75 {"unhalted-cycles", "cpu_clk_unhalted.thread"}, 76 {"instructions", "inst_retired.any"}, 77 {"branch-mispredicts", "br_misp_retired.all_branches"}, 78 {"branches", "br_inst_retired.all_branches"}, 79 {"interrupts", "hw_interrupts.received"}, 80 {"ic-misses", "frontend_retired.l1i_miss"}, 81 {NULL, NULL}, 82 }; 83 84 static struct pmu_alias pmu_amd_alias_table[] = { 85 {"UNHALTED_CORE_CYCLES", "ls_not_halted_cyc"}, 86 {"UNHALTED-CORE-CYCLES", "ls_not_halted_cyc"}, 87 {"LLC_MISSES", "l3_comb_clstr_state.request_miss"}, 88 {"LLC-MISSES", "l3_comb_clstr_state.request_miss"}, 89 {"LLC_REFERENCE", "l3_request_g1.caching_l3_cache_accesses"}, 90 {"LLC-REFERENCE", "l3_request_g1.caching_l3_cache_accesses"}, 91 {"BRANCH_INSTRUCTION_RETIRED", "ex_ret_brn"}, 92 {"BRANCH-INSTRUCTION-RETIRED", "ex_ret_brn"}, 93 {"BRANCH_MISSES_RETIRED", "ex_ret_brn_misp"}, 94 {"BRANCH-MISSES-RETIRED", "ex_ret_brn_misp"}, 95 {"unhalted-cycles", "ls_not_halted_cyc"}, 96 {"instructions", "ex_ret_instr",}, 97 {"branch-mispredicts", "ex_ret_brn_misp"}, 98 {"branches", "ex_ret_brn"}, 99 {"interrupts", "ls_int_taken"}, /* Not on amdzen1 */ 100 {NULL, NULL}, 101 }; 102 103 104 static pmu_mfr_t 105 pmu_events_mfr(void) 106 { 107 char buf[PMC_CPUID_LEN]; 108 size_t s = sizeof(buf); 109 pmu_mfr_t mfr; 110 111 if (sysctlbyname("kern.hwpmc.cpuid", buf, &s, 112 (void *)NULL, 0) == -1) 113 return (PMU_INVALID); 114 if (strcasestr(buf, "AuthenticAMD") != NULL || 115 strcasestr(buf, "HygonGenuine") != NULL) 116 mfr = PMU_AMD; 117 else if (strcasestr(buf, "GenuineIntel") != NULL) 118 mfr = PMU_INTEL; 119 else 120 mfr = PMU_INVALID; 121 return (mfr); 122 } 123 124 static int 125 pmu_events_x86_family(void) 126 { 127 char buf[PMC_CPUID_LEN]; 128 size_t s = sizeof(buf); 129 char *cpuid, *family; 130 131 if (sysctlbyname("kern.hwpmc.cpuid", buf, &s, 132 (void *)NULL, 0) == -1) 133 return (-1); 134 cpuid = &buf[0]; 135 136 strsep(&cpuid, "-"); 137 family = strsep(&cpuid, "-"); 138 139 return (strtol(family, NULL, 10)); 140 } 141 142 /* 143 * The Intel fixed mode counters are: 144 * "inst_retired.any", 145 * "cpu_clk_unhalted.thread", 146 * "cpu_clk_unhalted.thread_any", 147 * "cpu_clk_unhalted.ref_tsc", 148 * 149 */ 150 151 static const char * 152 pmu_alias_get(const char *name) 153 { 154 pmu_mfr_t mfr; 155 struct pmu_alias *pa; 156 struct pmu_alias *pmu_alias_table; 157 158 if ((mfr = pmu_events_mfr()) == PMU_INVALID) 159 return (name); 160 if (mfr == PMU_AMD) 161 pmu_alias_table = pmu_amd_alias_table; 162 else if (mfr == PMU_INTEL) 163 pmu_alias_table = pmu_intel_alias_table; 164 else 165 return (name); 166 167 for (pa = pmu_alias_table; pa->pa_alias != NULL; pa++) 168 if (strcasecmp(name, pa->pa_alias) == 0) 169 return (pa->pa_name); 170 171 return (name); 172 } 173 #elif defined(__powerpc64__) 174 175 static const char * 176 pmu_alias_get(const char *name) 177 { 178 return (name); 179 } 180 181 #elif defined(__aarch64__) 182 183 static struct pmu_alias pmu_armv8_alias_table[] = { 184 {"UNHALTED_CORE_CYCLES", "CPU_CYCLES"}, 185 {"UNHALTED-CORE-CYCLES", "CPU_CYCLES"}, 186 {"LLC_MISSES", "LL_CACHE_MISS_RD"}, 187 {"LLC-MISSES", "LL_CACHE_MISS_RD"}, 188 {"LLC_REFERENCE", "LL_CACHE_RD"}, 189 {"LLC-REFERENCE", "LL_CACHE_RD"}, 190 {"BRANCH_INSTRUCTION_RETIRED", "BR_RETIRED"}, 191 {"BRANCH-INSTRUCTION-RETIRED", "BR_RETIRED"}, 192 {"BRANCH_MISSES_RETIRED", "BR_MIS_PRED_RETIRED"}, 193 {"BRANCH-MISSES-RETIRED", "BR_MIS_PRED_RETIRED"}, 194 {"unhalted-cycles", "CPU_CYCLES"}, 195 {"instructions", "INST_RETIRED",}, 196 {"branch-mispredicts", "BR_MIS_PRED_RETIRED"}, 197 {"branches", "BR_RETIRED"}, 198 {"interrupts", "EXC_IRQ"}, 199 {NULL, NULL}, 200 }; 201 202 static const char * 203 pmu_alias_get(const char *name) 204 { 205 struct pmu_alias *pa; 206 207 for (pa = pmu_armv8_alias_table; pa->pa_alias != NULL; pa++) 208 if (strcasecmp(name, pa->pa_alias) == 0) 209 return (pa->pa_name); 210 211 return (name); 212 } 213 214 #else 215 216 static const char * 217 pmu_alias_get(const char *name) 218 { 219 220 return (name); 221 } 222 #endif 223 224 struct pmu_event_desc { 225 uint64_t ped_period; 226 uint64_t ped_offcore_rsp; 227 uint64_t ped_l3_thread; 228 uint64_t ped_l3_slice; 229 uint32_t ped_sourceid; 230 uint32_t ped_coreid; 231 uint32_t ped_allsources; 232 uint32_t ped_allcores; 233 uint32_t ped_event; 234 uint32_t ped_frontend; 235 uint32_t ped_ldlat; 236 uint32_t ped_config1; 237 int16_t ped_umask; 238 uint8_t ped_cmask; 239 uint8_t ped_any; 240 uint8_t ped_inv; 241 uint8_t ped_edge; 242 uint8_t ped_fc_mask; 243 uint8_t ped_ch_mask; 244 uint8_t ped_pebs; 245 }; 246 247 static const struct pmu_events_map * 248 pmu_events_map_get(const char *cpuid) 249 { 250 regex_t re; 251 regmatch_t pmatch[1]; 252 char buf[PMC_CPUID_LEN]; 253 size_t s = sizeof(buf); 254 int match; 255 const struct pmu_events_map *pme; 256 257 if (cpuid != NULL) { 258 strlcpy(buf, cpuid, s); 259 } else { 260 if (sysctlbyname("kern.hwpmc.cpuid", buf, &s, 261 (void *)NULL, 0) == -1) 262 return (NULL); 263 } 264 for (pme = pmu_events_map; pme->cpuid != NULL; pme++) { 265 if (regcomp(&re, pme->cpuid, REG_EXTENDED) != 0) { 266 printf("regex '%s' failed to compile, ignoring\n", 267 pme->cpuid); 268 continue; 269 } 270 match = regexec(&re, buf, 1, pmatch, 0); 271 regfree(&re); 272 if (match == 0) { 273 if (pmatch[0].rm_so == 0 && (buf[pmatch[0].rm_eo] == 0 274 || buf[pmatch[0].rm_eo] == '-')) 275 return (pme); 276 } 277 } 278 return (NULL); 279 } 280 281 static const struct pmu_event * 282 pmu_event_get(const char *cpuid, const char *event_name, int *idx) 283 { 284 const struct pmu_events_map *pme; 285 const struct pmu_event *pe; 286 int i; 287 288 if ((pme = pmu_events_map_get(cpuid)) == NULL) 289 return (NULL); 290 for (i = 0, pe = pme->table; pe->name || pe->desc || pe->event; pe++, i++) { 291 if (pe->name == NULL) 292 continue; 293 if (strcasecmp(pe->name, event_name) == 0) { 294 if (idx) 295 *idx = i; 296 return (pe); 297 } 298 } 299 return (NULL); 300 } 301 302 int 303 pmc_pmu_idx_get_by_event(const char *cpuid, const char *event) 304 { 305 int idx; 306 const char *realname; 307 308 realname = pmu_alias_get(event); 309 if (pmu_event_get(cpuid, realname, &idx) == NULL) 310 return (-1); 311 return (idx); 312 } 313 314 const char * 315 pmc_pmu_event_get_by_idx(const char *cpuid, int idx) 316 { 317 const struct pmu_events_map *pme; 318 319 if ((pme = pmu_events_map_get(cpuid)) == NULL) 320 return (NULL); 321 assert(pme->table[idx].name); 322 return (pme->table[idx].name); 323 } 324 325 static int 326 pmu_parse_event(struct pmu_event_desc *ped, const char *eventin) 327 { 328 char *event; 329 char *kvp, *key, *value, *r; 330 char *debug; 331 332 if ((event = strdup(eventin)) == NULL) 333 return (ENOMEM); 334 r = event; 335 bzero(ped, sizeof(*ped)); 336 ped->ped_period = DEFAULT_SAMPLE_COUNT; 337 ped->ped_umask = -1; 338 while ((kvp = strsep(&event, ",")) != NULL) { 339 key = strsep(&kvp, "="); 340 if (key == NULL) 341 abort(); 342 value = kvp; 343 if (strcmp(key, "umask") == 0) 344 ped->ped_umask = strtol(value, NULL, 16); 345 else if (strcmp(key, "event") == 0) 346 ped->ped_event = strtol(value, NULL, 16); 347 else if (strcmp(key, "period") == 0) 348 ped->ped_period = strtol(value, NULL, 10); 349 else if (strcmp(key, "offcore_rsp") == 0) 350 ped->ped_offcore_rsp = strtol(value, NULL, 16); 351 else if (strcmp(key, "any") == 0) 352 ped->ped_any = strtol(value, NULL, 10); 353 else if (strcmp(key, "cmask") == 0) 354 ped->ped_cmask = strtol(value, NULL, 10); 355 else if (strcmp(key, "inv") == 0) 356 ped->ped_inv = strtol(value, NULL, 10); 357 else if (strcmp(key, "edge") == 0) 358 ped->ped_edge = strtol(value, NULL, 10); 359 else if (strcmp(key, "frontend") == 0) 360 ped->ped_frontend = strtol(value, NULL, 16); 361 else if (strcmp(key, "ldlat") == 0) 362 ped->ped_ldlat = strtol(value, NULL, 16); 363 else if (strcmp(key, "fc_mask") == 0) 364 ped->ped_fc_mask = strtol(value, NULL, 16); 365 else if (strcmp(key, "ch_mask") == 0) 366 ped->ped_ch_mask = strtol(value, NULL, 16); 367 else if (strcmp(key, "config1") == 0) 368 ped->ped_config1 = strtol(value, NULL, 16); 369 else if (strcmp(key, "l3_thread_mask") == 0) 370 ped->ped_l3_thread = strtol(value, NULL, 16); 371 else if (strcmp(key, "l3_slice_mask") == 0) 372 ped->ped_l3_slice = strtol(value, NULL, 16); 373 else if (strcmp(key, "sourceid") == 0) 374 ped->ped_sourceid = strtol(value, NULL, 16); 375 else if (strcmp(key, "coreid") == 0) 376 ped->ped_coreid = strtol(value, NULL, 16); 377 else if (strcmp(key, "allcores") == 0) 378 ped->ped_allcores = strtol(value, NULL, 10); 379 else if (strcmp(key, "allsources") == 0) 380 ped->ped_allsources = strtol(value, NULL, 10); 381 else if (strcmp(key, "pebs") == 0) 382 ped->ped_pebs = strtol(value, NULL, 10); 383 else { 384 debug = getenv("PMUDEBUG"); 385 if (debug != NULL && strcmp(debug, "true") == 0 && value != NULL) 386 printf("unrecognized kvpair: %s:%s\n", key, value); 387 } 388 } 389 free(r); 390 return (0); 391 } 392 393 uint64_t 394 pmc_pmu_sample_rate_get(const char *event_name) 395 { 396 const struct pmu_event *pe; 397 struct pmu_event_desc ped; 398 399 event_name = pmu_alias_get(event_name); 400 if ((pe = pmu_event_get(NULL, event_name, NULL)) == NULL) 401 return (DEFAULT_SAMPLE_COUNT); 402 if (pe->event == NULL) 403 return (DEFAULT_SAMPLE_COUNT); 404 if (pmu_parse_event(&ped, pe->event)) 405 return (DEFAULT_SAMPLE_COUNT); 406 return (ped.ped_period); 407 } 408 409 int 410 pmc_pmu_enabled(void) 411 { 412 413 return (pmu_events_map_get(NULL) != NULL); 414 } 415 416 void 417 pmc_pmu_print_counters(const char *event_name) 418 { 419 const struct pmu_events_map *pme; 420 const struct pmu_event *pe; 421 struct pmu_event_desc ped; 422 char *debug; 423 int do_debug; 424 425 debug = getenv("PMUDEBUG"); 426 do_debug = 0; 427 428 if (debug != NULL && strcmp(debug, "true") == 0) 429 do_debug = 1; 430 if ((pme = pmu_events_map_get(NULL)) == NULL) 431 return; 432 for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) { 433 if (pe->name == NULL) 434 continue; 435 if (event_name != NULL && strcasestr(pe->name, event_name) == NULL) 436 continue; 437 printf("\t%s\n", pe->name); 438 if (do_debug) 439 pmu_parse_event(&ped, pe->event); 440 } 441 } 442 443 void 444 pmc_pmu_print_counter_desc(const char *ev) 445 { 446 const struct pmu_events_map *pme; 447 const struct pmu_event *pe; 448 449 if ((pme = pmu_events_map_get(NULL)) == NULL) 450 return; 451 for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) { 452 if (pe->name == NULL) 453 continue; 454 if (strcasestr(pe->name, ev) != NULL && 455 pe->desc != NULL) 456 printf("%s:\t%s\n", pe->name, pe->desc); 457 } 458 } 459 460 void 461 pmc_pmu_print_counter_desc_long(const char *ev) 462 { 463 const struct pmu_events_map *pme; 464 const struct pmu_event *pe; 465 466 if ((pme = pmu_events_map_get(NULL)) == NULL) 467 return; 468 for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) { 469 if (pe->name == NULL) 470 continue; 471 if (strcasestr(pe->name, ev) != NULL) { 472 if (pe->long_desc != NULL) 473 printf("%s:\n%s\n", pe->name, pe->long_desc); 474 else if (pe->desc != NULL) 475 printf("%s:\t%s\n", pe->name, pe->desc); 476 } 477 } 478 } 479 480 void 481 pmc_pmu_print_counter_full(const char *ev) 482 { 483 const struct pmu_events_map *pme; 484 const struct pmu_event *pe; 485 486 if ((pme = pmu_events_map_get(NULL)) == NULL) 487 return; 488 for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) { 489 if (pe->name == NULL) 490 continue; 491 if (strcasestr(pe->name, ev) == NULL) 492 continue; 493 if (pe != pme->table) 494 printf("\n"); 495 printf("name: %s\n", pe->name); 496 if (pe->long_desc != NULL) 497 printf("desc: %s\n", pe->long_desc); 498 else if (pe->desc != NULL) 499 printf("desc: %s\n", pe->desc); 500 if (pe->event != NULL) 501 printf("event: %s\n", pe->event); 502 if (pe->topic != NULL) 503 printf("topic: %s\n", pe->topic); 504 if (pe->pmu != NULL) 505 printf("pmu: %s\n", pe->pmu); 506 if (pe->unit != NULL) 507 printf("unit: %s\n", pe->unit); 508 if (pe->perpkg != NULL) 509 printf("perpkg: %s\n", pe->perpkg); 510 if (pe->metric_expr != NULL) 511 printf("metric_expr: %s\n", pe->metric_expr); 512 if (pe->metric_name != NULL) 513 printf("metric_name: %s\n", pe->metric_name); 514 if (pe->metric_group != NULL) 515 printf("metric_group: %s\n", pe->metric_group); 516 } 517 } 518 519 #if defined(__amd64__) || defined(__i386__) 520 static int 521 pmc_pmu_amd_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm, 522 struct pmu_event_desc *ped) 523 { 524 int cpu_family; 525 struct pmc_md_amd_op_pmcallocate *amd; 526 const struct pmu_event *pe; 527 int idx = -1; 528 529 cpu_family = pmu_events_x86_family(); 530 531 amd = &pm->pm_md.pm_amd; 532 if (ped->ped_umask > 0) { 533 pm->pm_caps |= PMC_CAP_QUALIFIER; 534 } 535 pm->pm_class = PMC_CLASS_K8; 536 pe = pmu_event_get(NULL, event_name, &idx); 537 538 if (pe->pmu == NULL) { 539 amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK(ped->ped_event); 540 amd->pm_amd_config |= AMD_PMC_TO_UNITMASK(ped->ped_umask); 541 amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_CORE; 542 if ((pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 0 || 543 (pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 544 (PMC_CAP_USER|PMC_CAP_SYSTEM)) 545 amd->pm_amd_config |= (AMD_PMC_USR | AMD_PMC_OS); 546 else if (pm->pm_caps & PMC_CAP_USER) 547 amd->pm_amd_config |= AMD_PMC_USR; 548 else if (pm->pm_caps & PMC_CAP_SYSTEM) 549 amd->pm_amd_config |= AMD_PMC_OS; 550 if (ped->ped_edge) 551 amd->pm_amd_config |= AMD_PMC_EDGE; 552 if (ped->ped_inv) 553 amd->pm_amd_config |= AMD_PMC_INVERT; 554 if (pm->pm_caps & PMC_CAP_INTERRUPT) 555 amd->pm_amd_config |= AMD_PMC_INT; 556 if (pm->pm_caps & PMC_CAP_PRECISE) 557 amd->pm_amd_config |= AMD_PMC_PRECISERETIRE; 558 } else if (strcmp("amd_l3", pe->pmu) == 0) { 559 amd->pm_amd_config |= AMD_PMC_L3_TO_EVENTMASK(ped->ped_event); 560 amd->pm_amd_config |= AMD_PMC_L3_TO_UNITMASK(ped->ped_umask); 561 amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_L3_CACHE; 562 if (cpu_family <= 0x17) { 563 amd->pm_amd_config |= 564 AMD_PMC_L31_TO_SLICE(ped->ped_l3_slice); 565 amd->pm_amd_config |= 566 AMD_PMC_L31_TO_CORE(ped->ped_l3_thread); 567 } else { 568 amd->pm_amd_config |= 569 AMD_PMC_L32_TO_THREAD(ped->ped_l3_thread); 570 amd->pm_amd_config |= 571 AMD_PMC_L32_TO_SOURCEID(ped->ped_sourceid); 572 amd->pm_amd_config |= 573 AMD_PMC_L32_TO_COREID(ped->ped_coreid); 574 if (ped->ped_allcores) 575 amd->pm_amd_config |= AMD_PMC_L32_ALLCORES; 576 if (ped->ped_allsources) 577 amd->pm_amd_config |= AMD_PMC_L32_ALLSOURCES; 578 } 579 } else if (strcmp("amd_df", pe->pmu) == 0) { 580 amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_DATA_FABRIC; 581 if (cpu_family <= 19) { 582 amd->pm_amd_config |= 583 AMD_PMC_DF1_TO_EVENTMASK(ped->ped_event); 584 amd->pm_amd_config |= 585 AMD_PMC_DF1_TO_UNITMASK(ped->ped_umask); 586 } else { 587 amd->pm_amd_config |= 588 AMD_PMC_DF2_TO_EVENTMASK(ped->ped_event); 589 amd->pm_amd_config |= 590 AMD_PMC_DF2_TO_UNITMASK(ped->ped_umask); 591 } 592 } else { 593 printf("PMC pmu '%s' is not supported!\n", pe->pmu); 594 return (EOPNOTSUPP); 595 } 596 597 return (0); 598 } 599 600 static int 601 pmc_pmu_intel_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm, 602 struct pmu_event_desc *ped) 603 { 604 struct pmc_md_iap_op_pmcallocate *iap; 605 606 iap = &pm->pm_md.pm_iap; 607 if (strcasestr(event_name, "UNC_") == event_name || 608 strcasestr(event_name, "uncore") != NULL) { 609 pm->pm_class = PMC_CLASS_UCP; 610 pm->pm_caps |= PMC_CAP_QUALIFIER; 611 /* XXX Check and block unsupported uncore counters */ 612 } else if (ped->ped_event == 0x0) { 613 pm->pm_class = PMC_CLASS_IAF; 614 } else { 615 pm->pm_class = PMC_CLASS_IAP; 616 pm->pm_caps |= PMC_CAP_QUALIFIER; 617 } 618 iap->pm_iap_config |= IAP_EVSEL(ped->ped_event); 619 if (ped->ped_umask > 0) 620 iap->pm_iap_config |= IAP_UMASK(ped->ped_umask); 621 iap->pm_iap_config |= IAP_CMASK(ped->ped_cmask); 622 iap->pm_iap_rsp = ped->ped_offcore_rsp; 623 624 if ((pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 0 || 625 (pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 626 (PMC_CAP_USER|PMC_CAP_SYSTEM)) 627 iap->pm_iap_config |= (IAP_USR | IAP_OS); 628 else if (pm->pm_caps & PMC_CAP_USER) 629 iap->pm_iap_config |= IAP_USR; 630 else if (pm->pm_caps & PMC_CAP_SYSTEM) 631 iap->pm_iap_config |= IAP_OS; 632 if (ped->ped_edge) 633 iap->pm_iap_config |= IAP_EDGE; 634 if (ped->ped_any) 635 iap->pm_iap_config |= IAP_ANY; 636 if (ped->ped_inv) 637 iap->pm_iap_config |= IAP_INV; 638 if (pm->pm_caps & PMC_CAP_INTERRUPT) 639 iap->pm_iap_config |= IAP_INT; 640 641 /* XXX Implement alone flag in the kernel module */ 642 643 /* 644 * PEBS counters are not implemented on FreeBSD yet. Counters labeled 645 * with PEBS = 2 in the JSON definitions require PEBS. It seems that 646 * some of them return bogus counts if you attempt to use them. 647 */ 648 if (ped->ped_pebs == 2) { 649 printf("PEBS only counters are not supported!\n"); 650 return (EOPNOTSUPP); 651 } 652 653 return (0); 654 } 655 656 static int 657 pmc_pmu_pmcallocate_md(const char *event_name, struct pmc_op_pmcallocate *pm) 658 { 659 const struct pmu_event *pe; 660 struct pmu_event_desc ped; 661 pmu_mfr_t mfr; 662 int idx = -1; 663 664 if ((mfr = pmu_events_mfr()) == PMU_INVALID) 665 return (ENOENT); 666 667 bzero(&pm->pm_md, sizeof(pm->pm_md)); 668 pm->pm_caps |= (PMC_CAP_READ | PMC_CAP_WRITE); 669 event_name = pmu_alias_get(event_name); 670 if ((pe = pmu_event_get(NULL, event_name, &idx)) == NULL) 671 return (ENOENT); 672 assert(idx >= 0); 673 pm->pm_ev = idx; 674 675 if (pe->event == NULL) 676 return (ENOENT); 677 if (pmu_parse_event(&ped, pe->event)) 678 return (ENOENT); 679 680 if (mfr == PMU_INTEL) 681 return (pmc_pmu_intel_pmcallocate(event_name, pm, &ped)); 682 else 683 return (pmc_pmu_amd_pmcallocate(event_name, pm, &ped)); 684 } 685 686 #elif defined(__powerpc64__) 687 688 static int 689 pmc_pmu_pmcallocate_md(const char *event_name, struct pmc_op_pmcallocate *pm) 690 { 691 const struct pmu_event *pe; 692 struct pmu_event_desc ped; 693 int idx = -1; 694 695 bzero(&pm->pm_md, sizeof(pm->pm_md)); 696 pm->pm_caps |= (PMC_CAP_READ | PMC_CAP_WRITE); 697 event_name = pmu_alias_get(event_name); 698 699 if ((pe = pmu_event_get(NULL, event_name, &idx)) == NULL) 700 return (ENOENT); 701 if (pe->event == NULL) 702 return (ENOENT); 703 if (pmu_parse_event(&ped, pe->event)) 704 return (ENOENT); 705 706 pm->pm_ev = idx; 707 pm->pm_md.pm_event = ped.ped_event; 708 pm->pm_class = PMC_CLASS_POWER8; 709 return (0); 710 } 711 712 #elif defined(__aarch64__) 713 714 static int 715 pmc_pmu_pmcallocate_md(const char *event_name, struct pmc_op_pmcallocate *pm) 716 { 717 const struct pmu_event *pe; 718 struct pmu_event_desc ped; 719 int idx = -1; 720 721 event_name = pmu_alias_get(event_name); 722 if ((pe = pmu_event_get(NULL, event_name, &idx)) == NULL) 723 return (ENOENT); 724 if (pe->event == NULL) 725 return (ENOENT); 726 if (pmu_parse_event(&ped, pe->event)) 727 return (ENOENT); 728 729 assert(idx >= 0); 730 pm->pm_ev = idx; 731 pm->pm_md.pm_md_config = ped.ped_event; 732 pm->pm_class = PMC_CLASS_ARMV8; 733 pm->pm_caps |= (PMC_CAP_READ | PMC_CAP_WRITE); 734 735 return (0); 736 } 737 738 #else 739 740 static int 741 pmc_pmu_pmcallocate_md(const char *e __unused, struct pmc_op_pmcallocate *p __unused) 742 { 743 return (EOPNOTSUPP); 744 } 745 #endif 746 747 int 748 pmc_pmu_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm) 749 { 750 int error; 751 752 error = pmc_pmu_pmcallocate_md(event_name, pm); 753 if (error != 0) { 754 /* Reset any changes. */ 755 pm->pm_ev = 0; 756 pm->pm_caps = 0; 757 pm->pm_class = 0; 758 759 return (error); 760 } 761 762 pm->pm_flags |= PMC_F_EV_PMU; 763 return (0); 764 } 765