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_period = DEFAULT_SAMPLE_COUNT;
 241         ped->ped_umask = -1;
 242         while ((kvp = strsep(&event, ",")) != NULL) {
 243                 key = strsep(&kvp, "=");
 244                 if (key == NULL)
 245                         abort();
 246                 value = kvp;
 247                 if (strcmp(key, "umask") == 0)
 248                         ped->ped_umask = strtol(value, NULL, 16);
 249                 else if (strcmp(key, "event") == 0)
 250                         ped->ped_event = strtol(value, NULL, 16);
 251                 else if (strcmp(key, "period") == 0)
 252                         ped->ped_period = strtol(value, NULL, 10);
 253                 else if (strcmp(key, "offcore_rsp") == 0)
 254                         ped->ped_offcore_rsp = strtol(value, NULL, 16);
 255                 else if (strcmp(key, "any") == 0)
 256                         ped->ped_any = strtol(value, NULL, 10);
 257                 else if (strcmp(key, "cmask") == 0)
 258                         ped->ped_cmask = strtol(value, NULL, 10);
 259                 else if (strcmp(key, "inv") == 0)
 260                         ped->ped_inv = strtol(value, NULL, 10);
 261                 else if (strcmp(key, "edge") == 0)
 262                         ped->ped_edge = strtol(value, NULL, 10);
 263                 else if (strcmp(key, "frontend") == 0)
 264                         ped->ped_frontend = strtol(value, NULL, 16);
 265                 else if (strcmp(key, "ldlat") == 0)
 266                         ped->ped_ldlat = strtol(value, NULL, 16);
 267                 else if (strcmp(key, "fc_mask") == 0)
 268                         ped->ped_fc_mask = strtol(value, NULL, 16);
 269                 else if (strcmp(key, "ch_mask") == 0)
 270                         ped->ped_ch_mask = strtol(value, NULL, 16);
 271                 else if (strcmp(key, "config1") == 0)
 272                         ped->ped_config1 = strtol(value, NULL, 16);
 273                 else {
 274                         debug = getenv("PMUDEBUG");
 275                         if (debug != NULL && strcmp(debug, "true") == 0 && value != NULL)
 276                                 printf("unrecognized kvpair: %s:%s\n", key, value);
 277                 }
 278         }
 279         free(r);
 280         return (0);
 281 }
 282
 283 uint64_t
 284 pmc_pmu_sample_rate_get(const char *event_name)
 285 {
 286         const struct pmu_event *pe;
 287         struct pmu_event_desc ped;
 288
 289         event_name = pmu_alias_get(event_name);
 290         if ((pe = pmu_event_get(NULL, event_name, NULL)) == NULL)
 291                 return (DEFAULT_SAMPLE_COUNT);
 292         if (pe->alias && (pe = pmu_event_get(NULL, pe->alias, NULL)) == NULL)
 293                 return (DEFAULT_SAMPLE_COUNT);
 294         if (pe->event == NULL)
 295                 return (DEFAULT_SAMPLE_COUNT);
 296         if (pmu_parse_event(&ped, pe->event))
 297                 return (DEFAULT_SAMPLE_COUNT);
 298         return (ped.ped_period);
 299 }
 300
 301 int
 302 pmc_pmu_enabled(void)
 303 {
 304
 305         return (pmu_events_map_get(NULL) != NULL);
 306 }
 307
 308 void
 309 pmc_pmu_print_counters(const char *event_name)
 310 {
 311         const struct pmu_events_map *pme;
 312         const struct pmu_event *pe;
 313         struct pmu_event_desc ped;
 314         char *debug;
 315         int do_debug;
 316
 317         debug = getenv("PMUDEBUG");
 318         do_debug = 0;
 319
 320         if (debug != NULL && strcmp(debug, "true") == 0)
 321                 do_debug = 1;
 322         if ((pme = pmu_events_map_get(NULL)) == NULL)
 323                 return;
 324         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 325                 if (pe->name == NULL)
 326                         continue;
 327                 if (event_name != NULL && strcasestr(pe->name, event_name) == NULL)
 328                         continue;
 329                 printf("\t%s\n", pe->name);
 330                 if (do_debug)
 331                         pmu_parse_event(&ped, pe->event);
 332         }
 333 }
 334
 335 void
 336 pmc_pmu_print_counter_desc(const char *ev)
 337 {
 338         const struct pmu_events_map *pme;
 339         const struct pmu_event *pe;
 340
 341         if ((pme = pmu_events_map_get(NULL)) == NULL)
 342                 return;
 343         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 344                 if (pe->name == NULL)
 345                         continue;
 346                 if (strcasestr(pe->name, ev) != NULL &&
 347                     pe->desc != NULL)
 348                         printf("%s:\t%s\n", pe->name, pe->desc);
 349         }
 350 }
 351
 352 void
 353 pmc_pmu_print_counter_desc_long(const char *ev)
 354 {
 355         const struct pmu_events_map *pme;
 356         const struct pmu_event *pe;
 357
 358         if ((pme = pmu_events_map_get(NULL)) == NULL)
 359                 return;
 360         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 361                 if (pe->name == NULL)
 362                         continue;
 363                 if (strcasestr(pe->name, ev) != NULL) {
 364                         if (pe->long_desc != NULL)
 365                                 printf("%s:\n%s\n", pe->name, pe->long_desc);
 366                         else if (pe->desc != NULL)
 367                                 printf("%s:\t%s\n", pe->name, pe->desc);
 368                 }
 369         }
 370 }
 371
 372 void
 373 pmc_pmu_print_counter_full(const char *ev)
 374 {
 375         const struct pmu_events_map *pme;
 376         const struct pmu_event *pe;
 377
 378         if ((pme = pmu_events_map_get(NULL)) == NULL)
 379                 return;
 380         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 381                 if (pe->name == NULL)
 382                         continue;
 383                 if (strcasestr(pe->name, ev) == NULL)
 384                         continue;
 385                 printf("name: %s\n", pe->name);
 386                 if (pe->long_desc != NULL)
 387                         printf("desc: %s\n", pe->long_desc);
 388                 else if (pe->desc != NULL)
 389                         printf("desc: %s\n", pe->desc);
 390                 if (pe->event != NULL)
 391                         printf("event: %s\n", pe->event);
 392                 if (pe->topic != NULL)
 393                         printf("topic: %s\n", pe->topic);
 394                 if (pe->pmu != NULL)
 395                         printf("pmu: %s\n", pe->pmu);
 396                 if (pe->unit != NULL)
 397                         printf("unit: %s\n", pe->unit);
 398                 if (pe->perpkg != NULL)
 399                         printf("perpkg: %s\n", pe->perpkg);
 400                 if (pe->metric_expr != NULL)
 401                         printf("metric_expr: %s\n", pe->metric_expr);
 402                 if (pe->metric_name != NULL)
 403                         printf("metric_name: %s\n", pe->metric_name);
 404                 if (pe->metric_group != NULL)
 405                         printf("metric_group: %s\n", pe->metric_group);
 406         }
 407 }
 408
 409 static int
 410 pmc_pmu_amd_pmcallocate(const char *event_name __unused, struct pmc_op_pmcallocate *pm,
 411         struct pmu_event_desc *ped)
 412 {
 413         struct pmc_md_amd_op_pmcallocate *amd;
 414
 415         amd = &pm->pm_md.pm_amd;
 416         amd->pm_amd_config = AMD_PMC_TO_EVENTMASK(ped->ped_event);
 417         if (ped->ped_umask > 0) {
 418                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 419                 amd->pm_amd_config |= AMD_PMC_TO_UNITMASK(ped->ped_umask);
 420         }
 421         pm->pm_class = PMC_CLASS_K8;
 422
 423         if ((pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 0 ||
 424                 (pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) ==
 425                 (PMC_CAP_USER|PMC_CAP_SYSTEM))
 426                 amd->pm_amd_config |= (AMD_PMC_USR | AMD_PMC_OS);
 427         else if (pm->pm_caps & PMC_CAP_USER)
 428                 amd->pm_amd_config |= AMD_PMC_USR;
 429         else if (pm->pm_caps & PMC_CAP_SYSTEM)
 430                 amd->pm_amd_config |= AMD_PMC_OS;
 431         if (ped->ped_edge)
 432                 amd->pm_amd_config |= AMD_PMC_EDGE;
 433         if (ped->ped_inv)
 434                 amd->pm_amd_config |= AMD_PMC_EDGE;
 435         if (pm->pm_caps & PMC_CAP_INTERRUPT)
 436                 amd->pm_amd_config |= AMD_PMC_INT;
 437         return (0);
 438 }
 439
 440 static int
 441 pmc_pmu_intel_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm,
 442         struct pmu_event_desc *ped)
 443 {
 444         struct pmc_md_iap_op_pmcallocate *iap;
 445         int isfixed;
 446
 447         isfixed = 0;
 448         iap = &pm->pm_md.pm_iap;
 449         if (strcasestr(event_name, "UNC_") == event_name ||
 450             strcasestr(event_name, "uncore") != NULL) {
 451                 pm->pm_class = PMC_CLASS_UCP;
 452                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 453         } else if ((ped->ped_umask == -1) ||
 454             (ped->ped_event == 0x0 && ped->ped_umask == 0x3)) {
 455                 pm->pm_class = PMC_CLASS_IAF;
 456         } else {
 457                 pm->pm_class = PMC_CLASS_IAP;
 458                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 459         }
 460         iap->pm_iap_config |= IAP_EVSEL(ped->ped_event);
 461         if (ped->ped_umask > 0)
 462                 iap->pm_iap_config |= IAP_UMASK(ped->ped_umask);
 463         iap->pm_iap_config |= IAP_CMASK(ped->ped_cmask);
 464         iap->pm_iap_rsp = ped->ped_offcore_rsp;
 465
 466         if ((pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 0 ||
 467                 (pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) ==
 468                 (PMC_CAP_USER|PMC_CAP_SYSTEM))
 469                 iap->pm_iap_config |= (IAP_USR | IAP_OS);
 470         else if (pm->pm_caps & PMC_CAP_USER)
 471                 iap->pm_iap_config |= IAP_USR;
 472         else if (pm->pm_caps & PMC_CAP_SYSTEM)
 473                 iap->pm_iap_config |= IAP_OS;
 474         if (ped->ped_edge)
 475                 iap->pm_iap_config |= IAP_EDGE;
 476         if (ped->ped_any)
 477                 iap->pm_iap_config |= IAP_ANY;
 478         if (ped->ped_inv)
 479                 iap->pm_iap_config |= IAP_EDGE;
 480         if (pm->pm_caps & PMC_CAP_INTERRUPT)
 481                 iap->pm_iap_config |= IAP_INT;
 482         return (0);
 483 }
 484
 485 int
 486 pmc_pmu_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm)
 487 {
 488         const struct pmu_event *pe;
 489         struct pmu_event_desc ped;
 490         pmu_mfr_t mfr;
 491         int idx = -1;
 492
 493         if ((mfr = pmu_events_mfr()) == PMU_INVALID)
 494                 return (ENOENT);
 495
 496         bzero(&pm->pm_md, sizeof(pm->pm_md));
 497         pm->pm_caps |= (PMC_CAP_READ | PMC_CAP_WRITE);
 498         event_name = pmu_alias_get(event_name);
 499         if ((pe = pmu_event_get(NULL, event_name, &idx)) == NULL)
 500                 return (ENOENT);
 501         if (pe->alias && (pe = pmu_event_get(NULL, pe->alias, &idx)) == NULL)
 502                 return (ENOENT);
 503         assert(idx >= 0);
 504         pm->pm_ev = idx;
 505
 506         if (pe->event == NULL)
 507                 return (ENOENT);
 508         if (pmu_parse_event(&ped, pe->event))
 509                 return (ENOENT);
 510
 511         if (mfr == PMU_INTEL)
 512                 return (pmc_pmu_intel_pmcallocate(event_name, pm, &ped));
 513         else
 514                 return (pmc_pmu_amd_pmcallocate(event_name, pm, &ped));
 515 }
 516
 517 /*
 518  * Ultimately rely on AMD calling theirs the same
 519  */
 520 static const char *stat_mode_cntrs[] = {
 521         "cpu_clk_unhalted.thread",
 522         "inst_retired.any",
 523         "br_inst_retired.all_branches",
 524         "br_misp_retired.all_branches",
 525         "longest_lat_cache.reference",
 526         "longest_lat_cache.miss",
 527 };
 528
 529 int
 530 pmc_pmu_stat_mode(const char ***cntrs)
 531 {
 532         if (pmc_pmu_enabled()) {
 533                 *cntrs = stat_mode_cntrs;
 534                 return (0);
 535         }
 536         return (EOPNOTSUPP);
 537 }
 538
 539 #else
 540
 541 uint64_t
 542 pmc_pmu_sample_rate_get(const char *event_name __unused)
 543 {
 544         return (DEFAULT_SAMPLE_COUNT);
 545 }
 546
 547 void
 548 pmc_pmu_print_counters(const char *event_name __unused)
 549 {
 550 }
 551
 552 void
 553 pmc_pmu_print_counter_desc(const char *e __unused)
 554 {
 555 }
 556
 557 void
 558 pmc_pmu_print_counter_desc_long(const char *e __unused)
 559 {
 560 }
 561
 562 void
 563 pmc_pmu_print_counter_full(const char *e __unused)
 564 {
 565
 566 }
 567
 568 int
 569 pmc_pmu_enabled(void)
 570 {
 571         return (0);
 572 }
 573
 574 int
 575 pmc_pmu_pmcallocate(const char *e __unused, struct pmc_op_pmcallocate *p __unused)
 576 {
 577         return (EOPNOTSUPP);
 578 }
 579
 580 const char *
 581 pmc_pmu_event_get_by_idx(const char *c __unused, int idx __unused)
 582 {
 583         return (NULL);
 584 }
 585
 586 int
 587 pmc_pmu_stat_mode(const char ***a __unused)
 588 {
 589         return (EOPNOTSUPP);
 590 }
 591
 592 int
 593 pmc_pmu_idx_get_by_event(const char *c __unused, const char *e __unused)
 594 {
 595         return (-1);
 596 }
 597
 598 #endif