lib/libpmc/libpmc_pmu_util.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2018, Matthew Macy
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  *
  27  * $FreeBSD$
  28  *
  29  */
  30
  31 #include <sys/types.h>
  32 #include <sys/errno.h>
  33 #include <sys/sysctl.h>
  34 #include <stddef.h>
  35 #include <stdlib.h>
  36 #include <limits.h>
  37 #include <string.h>
  38 #include <pmc.h>
  39 #include <pmclog.h>
  40 #include <assert.h>
  41 #include <libpmcstat.h>
  42 #include "pmu-events/pmu-events.h"
  43
  44 #if defined(__amd64__) || defined(__i386__)
  45 struct pmu_alias {
  46         const char *pa_alias;
  47         const char *pa_name;
  48 };
  49
  50 typedef enum {
  51         PMU_INVALID,
  52         PMU_INTEL,
  53         PMU_AMD,
  54 } pmu_mfr_t;
  55
  56 static struct pmu_alias pmu_intel_alias_table[] = {
  57         {"UNHALTED_CORE_CYCLES", "CPU_CLK_UNHALTED.THREAD_P_ANY"},
  58         {"UNHALTED-CORE-CYCLES", "CPU_CLK_UNHALTED.THREAD_P_ANY"},
  59         {"LLC_MISSES", "LONGEST_LAT_CACHE.MISS"},
  60         {"LLC-MISSES", "LONGEST_LAT_CACHE.MISS"},
  61         {"LLC_REFERENCE", "LONGEST_LAT_CACHE.REFERENCE"},
  62         {"LLC-REFERENCE", "LONGEST_LAT_CACHE.REFERENCE"},
  63         {"LLC_MISS_RHITM", "mem_load_l3_miss_retired.remote_hitm"},
  64         {"LLC-MISS-RHITM", "mem_load_l3_miss_retired.remote_hitm"},
  65         {"RESOURCE_STALL", "RESOURCE_STALLS.ANY"},
  66         {"RESOURCE_STALLS_ANY", "RESOURCE_STALLS.ANY"},
  67         {"BRANCH_INSTRUCTION_RETIRED", "BR_INST_RETIRED.ALL_BRANCHES"},
  68         {"BRANCH-INSTRUCTION-RETIRED", "BR_INST_RETIRED.ALL_BRANCHES"},
  69         {"BRANCH_MISSES_RETIRED", "BR_MISP_RETIRED.ALL_BRANCHES"},
  70         {"BRANCH-MISSES-RETIRED", "BR_MISP_RETIRED.ALL_BRANCHES"},
  71         {"cycles", "tsc-tsc"},
  72         {"instructions", "inst-retired.any_p"},
  73         {"branch-mispredicts", "br_misp_retired.all_branches"},
  74         {"branches", "br_inst_retired.all_branches"},
  75         {"interrupts", "hw_interrupts.received"},
  76         {"ic-misses", "frontend_retired.l1i_miss"},
  77         {NULL, NULL},
  78 };
  79
  80 static struct pmu_alias pmu_amd_alias_table[] = {
  81         {"UNHALTED_CORE_CYCLES", "ls_not_halted_cyc"},
  82         {"UNHALTED-CORE-CYCLES", "ls_not_halted_cyc"},
  83         {NULL, NULL},
  84 };
  85
  86
  87 static pmu_mfr_t
  88 pmu_events_mfr(void)
  89 {
  90         char *buf;
  91         size_t s;
  92         pmu_mfr_t mfr;
  93
  94         if (sysctlbyname("kern.hwpmc.cpuid", (void *)NULL, &s,
  95             (void *)NULL, 0) == -1)
  96                 return (PMU_INVALID);
  97         if ((buf = malloc(s + 1)) == NULL)
  98                 return (PMU_INVALID);
  99         if (sysctlbyname("kern.hwpmc.cpuid", buf, &s,
 100                 (void *)NULL, 0) == -1) {
 101                 free(buf);
 102                 return (PMU_INVALID);
 103         }
 104         if (strcasestr(buf, "AuthenticAMD") != NULL)
 105                 mfr = PMU_AMD;
 106         else if (strcasestr(buf, "GenuineIntel") != NULL)
 107                 mfr = PMU_INTEL;
 108         else
 109                 mfr = PMU_INVALID;
 110         free(buf);
 111         return (mfr);
 112 }
 113
 114 /*
 115  *  The Intel fixed mode counters are:
 116  *      "inst_retired.any",
 117  *      "cpu_clk_unhalted.thread",
 118  *      "cpu_clk_unhalted.thread_any",
 119  *      "cpu_clk_unhalted.ref_tsc",
 120  *
 121  */
 122
 123 static const char *
 124 pmu_alias_get(const char *name)
 125 {
 126         pmu_mfr_t mfr;
 127         struct pmu_alias *pa;
 128         struct pmu_alias *pmu_alias_table;
 129
 130         if ((mfr = pmu_events_mfr()) == PMU_INVALID)
 131                 return (name);
 132         if (mfr == PMU_AMD)
 133                 pmu_alias_table = pmu_amd_alias_table;
 134         else if (mfr == PMU_INTEL)
 135                 pmu_alias_table = pmu_intel_alias_table;
 136         else
 137                 return (name);
 138
 139         for (pa = pmu_alias_table; pa->pa_alias != NULL; pa++)
 140                 if (strcasecmp(name, pa->pa_alias) == 0)
 141                         return (pa->pa_name);
 142
 143         return (name);
 144 }
 145
 146 struct pmu_event_desc {
 147         uint64_t ped_period;
 148         uint64_t ped_offcore_rsp;
 149         uint32_t ped_event;
 150         uint32_t ped_frontend;
 151         uint32_t ped_ldlat;
 152         uint32_t ped_config1;
 153         int16_t ped_umask;
 154         uint8_t ped_cmask;
 155         uint8_t ped_any;
 156         uint8_t ped_inv;
 157         uint8_t ped_edge;
 158         uint8_t ped_fc_mask;
 159         uint8_t ped_ch_mask;
 160 };
 161
 162 static const struct pmu_events_map *
 163 pmu_events_map_get(const char *cpuid)
 164 {
 165         size_t s;
 166         char buf[64];
 167         const struct pmu_events_map *pme;
 168
 169         if (cpuid != NULL) {
 170                 memcpy(buf, cpuid, 64);
 171         } else {
 172                 if (sysctlbyname("kern.hwpmc.cpuid", (void *)NULL, &s,
 173                     (void *)NULL, 0) == -1)
 174                         return (NULL);
 175                 if (sysctlbyname("kern.hwpmc.cpuid", buf, &s,
 176                     (void *)NULL, 0) == -1)
 177                         return (NULL);
 178         }
 179         for (pme = pmu_events_map; pme->cpuid != NULL; pme++)
 180                 if (strcmp(buf, pme->cpuid) == 0)
 181                         return (pme);
 182         return (NULL);
 183 }
 184
 185 static const struct pmu_event *
 186 pmu_event_get(const char *cpuid, const char *event_name, int *idx)
 187 {
 188         const struct pmu_events_map *pme;
 189         const struct pmu_event *pe;
 190         int i;
 191
 192         if ((pme = pmu_events_map_get(cpuid)) == NULL)
 193                 return (NULL);
 194         for (i = 0, pe = pme->table; pe->name || pe->desc || pe->event; pe++, i++) {
 195                 if (pe->name == NULL)
 196                         continue;
 197                 if (strcasecmp(pe->name, event_name) == 0) {
 198                         if (idx)
 199                                 *idx = i;
 200                         return (pe);
 201                 }
 202         }
 203         return (NULL);
 204 }
 205
 206 int
 207 pmc_pmu_idx_get_by_event(const char *cpuid, const char *event)
 208 {
 209         int idx;
 210         const char *realname;
 211
 212         realname = pmu_alias_get(event);
 213         if (pmu_event_get(cpuid, realname, &idx) == NULL)
 214                 return (-1);
 215         return (idx);
 216 }
 217
 218 const char *
 219 pmc_pmu_event_get_by_idx(const char *cpuid, int idx)
 220 {
 221         const struct pmu_events_map *pme;
 222
 223         if ((pme = pmu_events_map_get(cpuid)) == NULL)
 224                 return (NULL);
 225         assert(pme->table[idx].name);
 226         return (pme->table[idx].name);
 227 }
 228
 229 static int
 230 pmu_parse_event(struct pmu_event_desc *ped, const char *eventin)
 231 {
 232         char *event;
 233         char *kvp, *key, *value, *r;
 234         char *debug;
 235
 236         if ((event = strdup(eventin)) == NULL)
 237                 return (ENOMEM);
 238         r = event;
 239         bzero(ped, sizeof(*ped));
 240         ped->ped_umask = -1;
 241         while ((kvp = strsep(&event, ",")) != NULL) {
 242                 key = strsep(&kvp, "=");
 243                 if (key == NULL)
 244                         abort();
 245                 value = kvp;
 246                 if (strcmp(key, "umask") == 0)
 247                         ped->ped_umask = strtol(value, NULL, 16);
 248                 else if (strcmp(key, "event") == 0)
 249                         ped->ped_event = strtol(value, NULL, 16);
 250                 else if (strcmp(key, "period") == 0)
 251                         ped->ped_period = strtol(value, NULL, 10);
 252                 else if (strcmp(key, "offcore_rsp") == 0)
 253                         ped->ped_offcore_rsp = strtol(value, NULL, 16);
 254                 else if (strcmp(key, "any") == 0)
 255                         ped->ped_any = strtol(value, NULL, 10);
 256                 else if (strcmp(key, "cmask") == 0)
 257                         ped->ped_cmask = strtol(value, NULL, 10);
 258                 else if (strcmp(key, "inv") == 0)
 259                         ped->ped_inv = strtol(value, NULL, 10);
 260                 else if (strcmp(key, "edge") == 0)
 261                         ped->ped_edge = strtol(value, NULL, 10);
 262                 else if (strcmp(key, "frontend") == 0)
 263                         ped->ped_frontend = strtol(value, NULL, 16);
 264                 else if (strcmp(key, "ldlat") == 0)
 265                         ped->ped_ldlat = strtol(value, NULL, 16);
 266                 else if (strcmp(key, "fc_mask") == 0)
 267                         ped->ped_fc_mask = strtol(value, NULL, 16);
 268                 else if (strcmp(key, "ch_mask") == 0)
 269                         ped->ped_ch_mask = strtol(value, NULL, 16);
 270                 else if (strcmp(key, "config1") == 0)
 271                         ped->ped_config1 = strtol(value, NULL, 16);
 272                 else {
 273                         debug = getenv("PMUDEBUG");
 274                         if (debug != NULL && strcmp(debug, "true") == 0 && value != NULL)
 275                                 printf("unrecognized kvpair: %s:%s\n", key, value);
 276                 }
 277         }
 278         free(r);
 279         return (0);
 280 }
 281
 282 uint64_t
 283 pmc_pmu_sample_rate_get(const char *event_name)
 284 {
 285         const struct pmu_event *pe;
 286         struct pmu_event_desc ped;
 287
 288         event_name = pmu_alias_get(event_name);
 289         if ((pe = pmu_event_get(NULL, event_name, NULL)) == NULL)
 290                 return (DEFAULT_SAMPLE_COUNT);
 291         if (pe->alias && (pe = pmu_event_get(NULL, pe->alias, NULL)) == NULL)
 292                 return (DEFAULT_SAMPLE_COUNT);
 293         if (pe->event == NULL)
 294                 return (DEFAULT_SAMPLE_COUNT);
 295         if (pmu_parse_event(&ped, pe->event))
 296                 return (DEFAULT_SAMPLE_COUNT);
 297         return (ped.ped_period);
 298 }
 299
 300 int
 301 pmc_pmu_enabled(void)
 302 {
 303
 304         return (pmu_events_map_get(NULL) != NULL);
 305 }
 306
 307 void
 308 pmc_pmu_print_counters(const char *event_name)
 309 {
 310         const struct pmu_events_map *pme;
 311         const struct pmu_event *pe;
 312         struct pmu_event_desc ped;
 313         char *debug;
 314         int do_debug;
 315
 316         debug = getenv("PMUDEBUG");
 317         do_debug = 0;
 318
 319         if (debug != NULL && strcmp(debug, "true") == 0)
 320                 do_debug = 1;
 321         if ((pme = pmu_events_map_get(NULL)) == NULL)
 322                 return;
 323         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 324                 if (pe->name == NULL)
 325                         continue;
 326                 if (event_name != NULL && strcasestr(pe->name, event_name) == NULL)
 327                         continue;
 328                 printf("\t%s\n", pe->name);
 329                 if (do_debug)
 330                         pmu_parse_event(&ped, pe->event);
 331         }
 332 }
 333
 334 void
 335 pmc_pmu_print_counter_desc(const char *ev)
 336 {
 337         const struct pmu_events_map *pme;
 338         const struct pmu_event *pe;
 339
 340         if ((pme = pmu_events_map_get(NULL)) == NULL)
 341                 return;
 342         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 343                 if (pe->name == NULL)
 344                         continue;
 345                 if (strcasestr(pe->name, ev) != NULL &&
 346                     pe->desc != NULL)
 347                         printf("%s:\t%s\n", pe->name, pe->desc);
 348         }
 349 }
 350
 351 void
 352 pmc_pmu_print_counter_desc_long(const char *ev)
 353 {
 354         const struct pmu_events_map *pme;
 355         const struct pmu_event *pe;
 356
 357         if ((pme = pmu_events_map_get(NULL)) == NULL)
 358                 return;
 359         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 360                 if (pe->name == NULL)
 361                         continue;
 362                 if (strcasestr(pe->name, ev) != NULL) {
 363                         if (pe->long_desc != NULL)
 364                                 printf("%s:\n%s\n", pe->name, pe->long_desc);
 365                         else if (pe->desc != NULL)
 366                                 printf("%s:\t%s\n", pe->name, pe->desc);
 367                 }
 368         }
 369 }
 370
 371 void
 372 pmc_pmu_print_counter_full(const char *ev)
 373 {
 374         const struct pmu_events_map *pme;
 375         const struct pmu_event *pe;
 376
 377         if ((pme = pmu_events_map_get(NULL)) == NULL)
 378                 return;
 379         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 380                 if (pe->name == NULL)
 381                         continue;
 382                 if (strcasestr(pe->name, ev) == NULL)
 383                         continue;
 384                 printf("name: %s\n", pe->name);
 385                 if (pe->long_desc != NULL)
 386                         printf("desc: %s\n", pe->long_desc);
 387                 else if (pe->desc != NULL)
 388                         printf("desc: %s\n", pe->desc);
 389                 if (pe->event != NULL)
 390                         printf("event: %s\n", pe->event);
 391                 if (pe->topic != NULL)
 392                         printf("topic: %s\n", pe->topic);
 393                 if (pe->pmu != NULL)
 394                         printf("pmu: %s\n", pe->pmu);
 395                 if (pe->unit != NULL)
 396                         printf("unit: %s\n", pe->unit);
 397                 if (pe->perpkg != NULL)
 398                         printf("perpkg: %s\n", pe->perpkg);
 399                 if (pe->metric_expr != NULL)
 400                         printf("metric_expr: %s\n", pe->metric_expr);
 401                 if (pe->metric_name != NULL)
 402                         printf("metric_name: %s\n", pe->metric_name);
 403                 if (pe->metric_group != NULL)
 404                         printf("metric_group: %s\n", pe->metric_group);
 405         }
 406 }
 407
 408 static int
 409 pmc_pmu_amd_pmcallocate(const char *event_name __unused, struct pmc_op_pmcallocate *pm,
 410         struct pmu_event_desc *ped)
 411 {
 412         struct pmc_md_amd_op_pmcallocate *amd;
 413
 414         amd = &pm->pm_md.pm_amd;
 415         amd->pm_amd_config = AMD_PMC_TO_EVENTMASK(ped->ped_event);
 416         if (ped->ped_umask > 0) {
 417                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 418                 amd->pm_amd_config |= AMD_PMC_TO_UNITMASK(ped->ped_umask);
 419         }
 420         pm->pm_class = PMC_CLASS_K8;
 421
 422         if ((pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 0 ||
 423                 (pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) ==
 424                 (PMC_CAP_USER|PMC_CAP_SYSTEM))
 425                 amd->pm_amd_config |= (AMD_PMC_USR | AMD_PMC_OS);
 426         else if (pm->pm_caps & PMC_CAP_USER)
 427                 amd->pm_amd_config |= AMD_PMC_USR;
 428         else if (pm->pm_caps & PMC_CAP_SYSTEM)
 429                 amd->pm_amd_config |= AMD_PMC_OS;
 430         if (ped->ped_edge)
 431                 amd->pm_amd_config |= AMD_PMC_EDGE;
 432         if (ped->ped_inv)
 433                 amd->pm_amd_config |= AMD_PMC_EDGE;
 434         if (pm->pm_caps & PMC_CAP_INTERRUPT)
 435                 amd->pm_amd_config |= AMD_PMC_INT;
 436         return (0);
 437 }
 438
 439 static int
 440 pmc_pmu_intel_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm,
 441         struct pmu_event_desc *ped)
 442 {
 443         struct pmc_md_iap_op_pmcallocate *iap;
 444         int isfixed;
 445
 446         isfixed = 0;
 447         iap = &pm->pm_md.pm_iap;
 448         if (strcasestr(event_name, "UNC_") == event_name ||
 449             strcasestr(event_name, "uncore") != NULL) {
 450                 pm->pm_class = PMC_CLASS_UCP;
 451                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 452         } else if ((ped->ped_umask == -1) ||
 453             (ped->ped_event == 0x0 && ped->ped_umask == 0x3)) {
 454                 pm->pm_class = PMC_CLASS_IAF;
 455         } else {
 456                 pm->pm_class = PMC_CLASS_IAP;
 457                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 458         }
 459         iap->pm_iap_config |= IAP_EVSEL(ped->ped_event);
 460         if (ped->ped_umask > 0)
 461                 iap->pm_iap_config |= IAP_UMASK(ped->ped_umask);
 462         iap->pm_iap_config |= IAP_CMASK(ped->ped_cmask);
 463         iap->pm_iap_rsp = ped->ped_offcore_rsp;
 464
 465         if ((pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 0 ||
 466                 (pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) ==
 467                 (PMC_CAP_USER|PMC_CAP_SYSTEM))
 468                 iap->pm_iap_config |= (IAP_USR | IAP_OS);
 469         else if (pm->pm_caps & PMC_CAP_USER)
 470                 iap->pm_iap_config |= IAP_USR;
 471         else if (pm->pm_caps & PMC_CAP_SYSTEM)
 472                 iap->pm_iap_config |= IAP_OS;
 473         if (ped->ped_edge)
 474                 iap->pm_iap_config |= IAP_EDGE;
 475         if (ped->ped_any)
 476                 iap->pm_iap_config |= IAP_ANY;
 477         if (ped->ped_inv)
 478                 iap->pm_iap_config |= IAP_EDGE;
 479         if (pm->pm_caps & PMC_CAP_INTERRUPT)
 480                 iap->pm_iap_config |= IAP_INT;
 481         return (0);
 482 }
 483
 484 int
 485 pmc_pmu_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm)
 486 {
 487         const struct pmu_event *pe;
 488         struct pmu_event_desc ped;
 489         pmu_mfr_t mfr;
 490         int idx = -1;
 491
 492         if ((mfr = pmu_events_mfr()) == PMU_INVALID)
 493                 return (ENOENT);
 494
 495         bzero(&pm->pm_md, sizeof(pm->pm_md));
 496         pm->pm_caps |= (PMC_CAP_READ | PMC_CAP_WRITE);
 497         event_name = pmu_alias_get(event_name);
 498         if ((pe = pmu_event_get(NULL, event_name, &idx)) == NULL)
 499                 return (ENOENT);
 500         if (pe->alias && (pe = pmu_event_get(NULL, pe->alias, &idx)) == NULL)
 501                 return (ENOENT);
 502         assert(idx >= 0);
 503         pm->pm_ev = idx;
 504
 505         if (pe->event == NULL)
 506                 return (ENOENT);
 507         if (pmu_parse_event(&ped, pe->event))
 508                 return (ENOENT);
 509
 510         if (mfr == PMU_INTEL)
 511                 return (pmc_pmu_intel_pmcallocate(event_name, pm, &ped));
 512         else
 513                 return (pmc_pmu_amd_pmcallocate(event_name, pm, &ped));
 514 }
 515
 516 /*
 517  * Ultimately rely on AMD calling theirs the same
 518  */
 519 static const char *stat_mode_cntrs[] = {
 520         "cpu_clk_unhalted.thread",
 521         "inst_retired.any",
 522         "br_inst_retired.all_branches",
 523         "br_misp_retired.all_branches",
 524         "longest_lat_cache.reference",
 525         "longest_lat_cache.miss",
 526 };
 527
 528 int
 529 pmc_pmu_stat_mode(const char ***cntrs)
 530 {
 531         if (pmc_pmu_enabled()) {
 532                 *cntrs = stat_mode_cntrs;
 533                 return (0);
 534         }
 535         return (EOPNOTSUPP);
 536 }
 537
 538 #else
 539
 540 uint64_t
 541 pmc_pmu_sample_rate_get(const char *event_name __unused)
 542 {
 543         return (DEFAULT_SAMPLE_COUNT);
 544 }
 545
 546 void
 547 pmc_pmu_print_counters(const char *event_name __unused)
 548 {
 549 }
 550
 551 void
 552 pmc_pmu_print_counter_desc(const char *e __unused)
 553 {
 554 }
 555
 556 void
 557 pmc_pmu_print_counter_desc_long(const char *e __unused)
 558 {
 559 }
 560
 561 void
 562 pmc_pmu_print_counter_full(const char *e __unused)
 563 {
 564
 565 }
 566
 567 int
 568 pmc_pmu_enabled(void)
 569 {
 570         return (0);
 571 }
 572
 573 int
 574 pmc_pmu_pmcallocate(const char *e __unused, struct pmc_op_pmcallocate *p __unused)
 575 {
 576         return (EOPNOTSUPP);
 577 }
 578
 579 const char *
 580 pmc_pmu_event_get_by_idx(const char *c __unused, int idx __unused)
 581 {
 582         return (NULL);
 583 }
 584
 585 int
 586 pmc_pmu_stat_mode(const char ***a __unused)
 587 {
 588         return (EOPNOTSUPP);
 589 }
 590
 591 int
 592 pmc_pmu_idx_get_by_event(const char *c __unused, const char *e __unused)
 593 {
 594         return (-1);
 595 }
 596
 597 #endif