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         uint64_t ped_l3_thread;
 150         uint64_t ped_l3_slice;
 151         uint32_t ped_event;
 152         uint32_t ped_frontend;
 153         uint32_t ped_ldlat;
 154         uint32_t ped_config1;
 155         int16_t ped_umask;
 156         uint8_t ped_cmask;
 157         uint8_t ped_any;
 158         uint8_t ped_inv;
 159         uint8_t ped_edge;
 160         uint8_t ped_fc_mask;
 161         uint8_t ped_ch_mask;
 162 };
 163
 164 static const struct pmu_events_map *
 165 pmu_events_map_get(const char *cpuid)
 166 {
 167         size_t s;
 168         char buf[64];
 169         const struct pmu_events_map *pme;
 170
 171         if (cpuid != NULL) {
 172                 memcpy(buf, cpuid, 64);
 173         } else {
 174                 if (sysctlbyname("kern.hwpmc.cpuid", (void *)NULL, &s,
 175                     (void *)NULL, 0) == -1)
 176                         return (NULL);
 177                 if (sysctlbyname("kern.hwpmc.cpuid", buf, &s,
 178                     (void *)NULL, 0) == -1)
 179                         return (NULL);
 180         }
 181         for (pme = pmu_events_map; pme->cpuid != NULL; pme++)
 182                 if (strcmp(buf, pme->cpuid) == 0)
 183                         return (pme);
 184         return (NULL);
 185 }
 186
 187 static const struct pmu_event *
 188 pmu_event_get(const char *cpuid, const char *event_name, int *idx)
 189 {
 190         const struct pmu_events_map *pme;
 191         const struct pmu_event *pe;
 192         int i;
 193
 194         if ((pme = pmu_events_map_get(cpuid)) == NULL)
 195                 return (NULL);
 196         for (i = 0, pe = pme->table; pe->name || pe->desc || pe->event; pe++, i++) {
 197                 if (pe->name == NULL)
 198                         continue;
 199                 if (strcasecmp(pe->name, event_name) == 0) {
 200                         if (idx)
 201                                 *idx = i;
 202                         return (pe);
 203                 }
 204         }
 205         return (NULL);
 206 }
 207
 208 int
 209 pmc_pmu_idx_get_by_event(const char *cpuid, const char *event)
 210 {
 211         int idx;
 212         const char *realname;
 213
 214         realname = pmu_alias_get(event);
 215         if (pmu_event_get(cpuid, realname, &idx) == NULL)
 216                 return (-1);
 217         return (idx);
 218 }
 219
 220 const char *
 221 pmc_pmu_event_get_by_idx(const char *cpuid, int idx)
 222 {
 223         const struct pmu_events_map *pme;
 224
 225         if ((pme = pmu_events_map_get(cpuid)) == NULL)
 226                 return (NULL);
 227         assert(pme->table[idx].name);
 228         return (pme->table[idx].name);
 229 }
 230
 231 static int
 232 pmu_parse_event(struct pmu_event_desc *ped, const char *eventin)
 233 {
 234         char *event;
 235         char *kvp, *key, *value, *r;
 236         char *debug;
 237
 238         if ((event = strdup(eventin)) == NULL)
 239                 return (ENOMEM);
 240         r = event;
 241         bzero(ped, sizeof(*ped));
 242         ped->ped_period = DEFAULT_SAMPLE_COUNT;
 243         ped->ped_umask = -1;
 244         while ((kvp = strsep(&event, ",")) != NULL) {
 245                 key = strsep(&kvp, "=");
 246                 if (key == NULL)
 247                         abort();
 248                 value = kvp;
 249                 if (strcmp(key, "umask") == 0)
 250                         ped->ped_umask = strtol(value, NULL, 16);
 251                 else if (strcmp(key, "event") == 0)
 252                         ped->ped_event = strtol(value, NULL, 16);
 253                 else if (strcmp(key, "period") == 0)
 254                         ped->ped_period = strtol(value, NULL, 10);
 255                 else if (strcmp(key, "offcore_rsp") == 0)
 256                         ped->ped_offcore_rsp = strtol(value, NULL, 16);
 257                 else if (strcmp(key, "any") == 0)
 258                         ped->ped_any = strtol(value, NULL, 10);
 259                 else if (strcmp(key, "cmask") == 0)
 260                         ped->ped_cmask = strtol(value, NULL, 10);
 261                 else if (strcmp(key, "inv") == 0)
 262                         ped->ped_inv = strtol(value, NULL, 10);
 263                 else if (strcmp(key, "edge") == 0)
 264                         ped->ped_edge = strtol(value, NULL, 10);
 265                 else if (strcmp(key, "frontend") == 0)
 266                         ped->ped_frontend = strtol(value, NULL, 16);
 267                 else if (strcmp(key, "ldlat") == 0)
 268                         ped->ped_ldlat = strtol(value, NULL, 16);
 269                 else if (strcmp(key, "fc_mask") == 0)
 270                         ped->ped_fc_mask = strtol(value, NULL, 16);
 271                 else if (strcmp(key, "ch_mask") == 0)
 272                         ped->ped_ch_mask = strtol(value, NULL, 16);
 273                 else if (strcmp(key, "config1") == 0)
 274                         ped->ped_config1 = strtol(value, NULL, 16);
 275                 else if (strcmp(key, "l3_thread_mask") == 0)
 276                         ped->ped_l3_thread = strtol(value, NULL, 16);
 277                 else if (strcmp(key, "l3_slice_mask") == 0)
 278                         ped->ped_l3_slice = strtol(value, NULL, 16);
 279                 else {
 280                         debug = getenv("PMUDEBUG");
 281                         if (debug != NULL && strcmp(debug, "true") == 0 && value != NULL)
 282                                 printf("unrecognized kvpair: %s:%s\n", key, value);
 283                 }
 284         }
 285         free(r);
 286         return (0);
 287 }
 288
 289 uint64_t
 290 pmc_pmu_sample_rate_get(const char *event_name)
 291 {
 292         const struct pmu_event *pe;
 293         struct pmu_event_desc ped;
 294
 295         event_name = pmu_alias_get(event_name);
 296         if ((pe = pmu_event_get(NULL, event_name, NULL)) == NULL)
 297                 return (DEFAULT_SAMPLE_COUNT);
 298         if (pe->alias && (pe = pmu_event_get(NULL, pe->alias, NULL)) == NULL)
 299                 return (DEFAULT_SAMPLE_COUNT);
 300         if (pe->event == NULL)
 301                 return (DEFAULT_SAMPLE_COUNT);
 302         if (pmu_parse_event(&ped, pe->event))
 303                 return (DEFAULT_SAMPLE_COUNT);
 304         return (ped.ped_period);
 305 }
 306
 307 int
 308 pmc_pmu_enabled(void)
 309 {
 310
 311         return (pmu_events_map_get(NULL) != NULL);
 312 }
 313
 314 void
 315 pmc_pmu_print_counters(const char *event_name)
 316 {
 317         const struct pmu_events_map *pme;
 318         const struct pmu_event *pe;
 319         struct pmu_event_desc ped;
 320         char *debug;
 321         int do_debug;
 322
 323         debug = getenv("PMUDEBUG");
 324         do_debug = 0;
 325
 326         if (debug != NULL && strcmp(debug, "true") == 0)
 327                 do_debug = 1;
 328         if ((pme = pmu_events_map_get(NULL)) == NULL)
 329                 return;
 330         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 331                 if (pe->name == NULL)
 332                         continue;
 333                 if (event_name != NULL && strcasestr(pe->name, event_name) == NULL)
 334                         continue;
 335                 printf("\t%s\n", pe->name);
 336                 if (do_debug)
 337                         pmu_parse_event(&ped, pe->event);
 338         }
 339 }
 340
 341 void
 342 pmc_pmu_print_counter_desc(const char *ev)
 343 {
 344         const struct pmu_events_map *pme;
 345         const struct pmu_event *pe;
 346
 347         if ((pme = pmu_events_map_get(NULL)) == NULL)
 348                 return;
 349         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 350                 if (pe->name == NULL)
 351                         continue;
 352                 if (strcasestr(pe->name, ev) != NULL &&
 353                     pe->desc != NULL)
 354                         printf("%s:\t%s\n", pe->name, pe->desc);
 355         }
 356 }
 357
 358 void
 359 pmc_pmu_print_counter_desc_long(const char *ev)
 360 {
 361         const struct pmu_events_map *pme;
 362         const struct pmu_event *pe;
 363
 364         if ((pme = pmu_events_map_get(NULL)) == NULL)
 365                 return;
 366         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 367                 if (pe->name == NULL)
 368                         continue;
 369                 if (strcasestr(pe->name, ev) != NULL) {
 370                         if (pe->long_desc != NULL)
 371                                 printf("%s:\n%s\n", pe->name, pe->long_desc);
 372                         else if (pe->desc != NULL)
 373                                 printf("%s:\t%s\n", pe->name, pe->desc);
 374                 }
 375         }
 376 }
 377
 378 void
 379 pmc_pmu_print_counter_full(const char *ev)
 380 {
 381         const struct pmu_events_map *pme;
 382         const struct pmu_event *pe;
 383
 384         if ((pme = pmu_events_map_get(NULL)) == NULL)
 385                 return;
 386         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 387                 if (pe->name == NULL)
 388                         continue;
 389                 if (strcasestr(pe->name, ev) == NULL)
 390                         continue;
 391                 printf("name: %s\n", pe->name);
 392                 if (pe->long_desc != NULL)
 393                         printf("desc: %s\n", pe->long_desc);
 394                 else if (pe->desc != NULL)
 395                         printf("desc: %s\n", pe->desc);
 396                 if (pe->event != NULL)
 397                         printf("event: %s\n", pe->event);
 398                 if (pe->topic != NULL)
 399                         printf("topic: %s\n", pe->topic);
 400                 if (pe->pmu != NULL)
 401                         printf("pmu: %s\n", pe->pmu);
 402                 if (pe->unit != NULL)
 403                         printf("unit: %s\n", pe->unit);
 404                 if (pe->perpkg != NULL)
 405                         printf("perpkg: %s\n", pe->perpkg);
 406                 if (pe->metric_expr != NULL)
 407                         printf("metric_expr: %s\n", pe->metric_expr);
 408                 if (pe->metric_name != NULL)
 409                         printf("metric_name: %s\n", pe->metric_name);
 410                 if (pe->metric_group != NULL)
 411                         printf("metric_group: %s\n", pe->metric_group);
 412         }
 413 }
 414
 415 static int
 416 pmc_pmu_amd_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm,
 417         struct pmu_event_desc *ped)
 418 {
 419         struct pmc_md_amd_op_pmcallocate *amd;
 420         const struct pmu_event *pe;
 421         int idx = -1;
 422
 423         amd = &pm->pm_md.pm_amd;
 424         if (ped->ped_umask > 0) {
 425                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 426                 amd->pm_amd_config |= AMD_PMC_TO_UNITMASK(ped->ped_umask);
 427         }
 428         pm->pm_class = PMC_CLASS_K8;
 429         pe = pmu_event_get(NULL, event_name, &idx);
 430
 431         if (strcmp("l3cache", pe->topic) == 0){
 432                 amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK(ped->ped_event);
 433                 amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_L3_CACHE;
 434                 amd->pm_amd_config |= AMD_PMC_TO_L3SLICE(ped->ped_l3_slice);
 435                 amd->pm_amd_config |= AMD_PMC_TO_L3CORE(ped->ped_l3_thread);
 436         }
 437         else if (strcmp("data fabric", pe->topic) == 0){
 438
 439                 amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK_DF(ped->ped_event);
 440                 amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_DATA_FABRIC;
 441         }
 442         else{
 443                 amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK(ped->ped_event);
 444                 amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_CORE;
 445                 if ((pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 0 ||
 446                         (pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) ==
 447                         (PMC_CAP_USER|PMC_CAP_SYSTEM))
 448                         amd->pm_amd_config |= (AMD_PMC_USR | AMD_PMC_OS);
 449                 else if (pm->pm_caps & PMC_CAP_USER)
 450                         amd->pm_amd_config |= AMD_PMC_USR;
 451                 else if (pm->pm_caps & PMC_CAP_SYSTEM)
 452                         amd->pm_amd_config |= AMD_PMC_OS;
 453                 if (ped->ped_edge)
 454                         amd->pm_amd_config |= AMD_PMC_EDGE;
 455                 if (ped->ped_inv)
 456                         amd->pm_amd_config |= AMD_PMC_EDGE;
 457                 if (pm->pm_caps & PMC_CAP_INTERRUPT)
 458                         amd->pm_amd_config |= AMD_PMC_INT;
 459         }
 460         return (0);
 461 }
 462
 463 static int
 464 pmc_pmu_intel_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm,
 465         struct pmu_event_desc *ped)
 466 {
 467         struct pmc_md_iap_op_pmcallocate *iap;
 468         int isfixed;
 469
 470         isfixed = 0;
 471         iap = &pm->pm_md.pm_iap;
 472         if (strcasestr(event_name, "UNC_") == event_name ||
 473             strcasestr(event_name, "uncore") != NULL) {
 474                 pm->pm_class = PMC_CLASS_UCP;
 475                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 476         } else if ((ped->ped_umask == -1) ||
 477             (ped->ped_event == 0x0 && ped->ped_umask == 0x3)) {
 478                 pm->pm_class = PMC_CLASS_IAF;
 479         } else {
 480                 pm->pm_class = PMC_CLASS_IAP;
 481                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 482         }
 483         iap->pm_iap_config |= IAP_EVSEL(ped->ped_event);
 484         if (ped->ped_umask > 0)
 485                 iap->pm_iap_config |= IAP_UMASK(ped->ped_umask);
 486         iap->pm_iap_config |= IAP_CMASK(ped->ped_cmask);
 487         iap->pm_iap_rsp = ped->ped_offcore_rsp;
 488
 489         if ((pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 0 ||
 490                 (pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) ==
 491                 (PMC_CAP_USER|PMC_CAP_SYSTEM))
 492                 iap->pm_iap_config |= (IAP_USR | IAP_OS);
 493         else if (pm->pm_caps & PMC_CAP_USER)
 494                 iap->pm_iap_config |= IAP_USR;
 495         else if (pm->pm_caps & PMC_CAP_SYSTEM)
 496                 iap->pm_iap_config |= IAP_OS;
 497         if (ped->ped_edge)
 498                 iap->pm_iap_config |= IAP_EDGE;
 499         if (ped->ped_any)
 500                 iap->pm_iap_config |= IAP_ANY;
 501         if (ped->ped_inv)
 502                 iap->pm_iap_config |= IAP_EDGE;
 503         if (pm->pm_caps & PMC_CAP_INTERRUPT)
 504                 iap->pm_iap_config |= IAP_INT;
 505         return (0);
 506 }
 507
 508 int
 509 pmc_pmu_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm)
 510 {
 511         const struct pmu_event *pe;
 512         struct pmu_event_desc ped;
 513         pmu_mfr_t mfr;
 514         int idx = -1;
 515
 516         if ((mfr = pmu_events_mfr()) == PMU_INVALID)
 517                 return (ENOENT);
 518
 519         bzero(&pm->pm_md, sizeof(pm->pm_md));
 520         pm->pm_caps |= (PMC_CAP_READ | PMC_CAP_WRITE);
 521         event_name = pmu_alias_get(event_name);
 522         if ((pe = pmu_event_get(NULL, event_name, &idx)) == NULL)
 523                 return (ENOENT);
 524         if (pe->alias && (pe = pmu_event_get(NULL, pe->alias, &idx)) == NULL)
 525                 return (ENOENT);
 526         assert(idx >= 0);
 527         pm->pm_ev = idx;
 528
 529         if (pe->event == NULL)
 530                 return (ENOENT);
 531         if (pmu_parse_event(&ped, pe->event))
 532                 return (ENOENT);
 533
 534         if (mfr == PMU_INTEL)
 535                 return (pmc_pmu_intel_pmcallocate(event_name, pm, &ped));
 536         else
 537                 return (pmc_pmu_amd_pmcallocate(event_name, pm, &ped));
 538 }
 539
 540 /*
 541  * Ultimately rely on AMD calling theirs the same
 542  */
 543 static const char *stat_mode_cntrs[] = {
 544         "cpu_clk_unhalted.thread",
 545         "inst_retired.any",
 546         "br_inst_retired.all_branches",
 547         "br_misp_retired.all_branches",
 548         "longest_lat_cache.reference",
 549         "longest_lat_cache.miss",
 550 };
 551
 552 int
 553 pmc_pmu_stat_mode(const char ***cntrs)
 554 {
 555         if (pmc_pmu_enabled()) {
 556                 *cntrs = stat_mode_cntrs;
 557                 return (0);
 558         }
 559         return (EOPNOTSUPP);
 560 }
 561
 562 #else
 563
 564 uint64_t
 565 pmc_pmu_sample_rate_get(const char *event_name __unused)
 566 {
 567         return (DEFAULT_SAMPLE_COUNT);
 568 }
 569
 570 void
 571 pmc_pmu_print_counters(const char *event_name __unused)
 572 {
 573 }
 574
 575 void
 576 pmc_pmu_print_counter_desc(const char *e __unused)
 577 {
 578 }
 579
 580 void
 581 pmc_pmu_print_counter_desc_long(const char *e __unused)
 582 {
 583 }
 584
 585 void
 586 pmc_pmu_print_counter_full(const char *e __unused)
 587 {
 588
 589 }
 590
 591 int
 592 pmc_pmu_enabled(void)
 593 {
 594         return (0);
 595 }
 596
 597 int
 598 pmc_pmu_pmcallocate(const char *e __unused, struct pmc_op_pmcallocate *p __unused)
 599 {
 600         return (EOPNOTSUPP);
 601 }
 602
 603 const char *
 604 pmc_pmu_event_get_by_idx(const char *c __unused, int idx __unused)
 605 {
 606         return (NULL);
 607 }
 608
 609 int
 610 pmc_pmu_stat_mode(const char ***a __unused)
 611 {
 612         return (EOPNOTSUPP);
 613 }
 614
 615 int
 616 pmc_pmu_idx_get_by_event(const char *c __unused, const char *e __unused)
 617 {
 618         return (-1);
 619 }
 620
 621 #endif