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/pmc.h>
  34 #include <sys/sysctl.h>
  35 #include <stddef.h>
  36 #include <stdlib.h>
  37 #include <limits.h>
  38 #include <regex.h>
  39 #include <string.h>
  40 #include <pmc.h>
  41 #include <pmclog.h>
  42 #include <assert.h>
  43 #include <libpmcstat.h>
  44 #include "pmu-events/pmu-events.h"
  45
  46 #if defined(__amd64__) || defined(__i386__)
  47 struct pmu_alias {
  48         const char *pa_alias;
  49         const char *pa_name;
  50 };
  51
  52 typedef enum {
  53         PMU_INVALID,
  54         PMU_INTEL,
  55         PMU_AMD,
  56 } pmu_mfr_t;
  57
  58 static struct pmu_alias pmu_intel_alias_table[] = {
  59         {"UNHALTED_CORE_CYCLES", "CPU_CLK_UNHALTED.THREAD_P_ANY"},
  60         {"UNHALTED-CORE-CYCLES", "CPU_CLK_UNHALTED.THREAD_P_ANY"},
  61         {"LLC_MISSES", "LONGEST_LAT_CACHE.MISS"},
  62         {"LLC-MISSES", "LONGEST_LAT_CACHE.MISS"},
  63         {"LLC_REFERENCE", "LONGEST_LAT_CACHE.REFERENCE"},
  64         {"LLC-REFERENCE", "LONGEST_LAT_CACHE.REFERENCE"},
  65         {"LLC_MISS_RHITM", "mem_load_l3_miss_retired.remote_hitm"},
  66         {"LLC-MISS-RHITM", "mem_load_l3_miss_retired.remote_hitm"},
  67         {"RESOURCE_STALL", "RESOURCE_STALLS.ANY"},
  68         {"RESOURCE_STALLS_ANY", "RESOURCE_STALLS.ANY"},
  69         {"BRANCH_INSTRUCTION_RETIRED", "BR_INST_RETIRED.ALL_BRANCHES"},
  70         {"BRANCH-INSTRUCTION-RETIRED", "BR_INST_RETIRED.ALL_BRANCHES"},
  71         {"BRANCH_MISSES_RETIRED", "BR_MISP_RETIRED.ALL_BRANCHES"},
  72         {"BRANCH-MISSES-RETIRED", "BR_MISP_RETIRED.ALL_BRANCHES"},
  73         {"cycles", "tsc-tsc"},
  74         {"unhalted-cycles", "CPU_CLK_UNHALTED.THREAD_P_ANY"},
  75         {"instructions", "inst-retired.any_p"},
  76         {"branch-mispredicts", "br_misp_retired.all_branches"},
  77         {"branches", "br_inst_retired.all_branches"},
  78         {"interrupts", "hw_interrupts.received"},
  79         {"ic-misses", "frontend_retired.l1i_miss"},
  80         {NULL, NULL},
  81 };
  82
  83 static struct pmu_alias pmu_amd_alias_table[] = {
  84         {"UNHALTED_CORE_CYCLES", "ls_not_halted_cyc"},
  85         {"UNHALTED-CORE-CYCLES", "ls_not_halted_cyc"},
  86         {NULL, NULL},
  87 };
  88
  89
  90 static pmu_mfr_t
  91 pmu_events_mfr(void)
  92 {
  93         char buf[PMC_CPUID_LEN];
  94         size_t s = sizeof(buf);
  95         pmu_mfr_t mfr;
  96
  97         if (sysctlbyname("kern.hwpmc.cpuid", buf, &s,
  98             (void *)NULL, 0) == -1)
  99                 return (PMU_INVALID);
 100         if (strcasestr(buf, "AuthenticAMD") != NULL ||
 101             strcasestr(buf, "HygonGenuine") != NULL)
 102                 mfr = PMU_AMD;
 103         else if (strcasestr(buf, "GenuineIntel") != NULL)
 104                 mfr = PMU_INTEL;
 105         else
 106                 mfr = PMU_INVALID;
 107         return (mfr);
 108 }
 109
 110 /*
 111  *  The Intel fixed mode counters are:
 112  *      "inst_retired.any",
 113  *      "cpu_clk_unhalted.thread",
 114  *      "cpu_clk_unhalted.thread_any",
 115  *      "cpu_clk_unhalted.ref_tsc",
 116  *
 117  */
 118
 119 static const char *
 120 pmu_alias_get(const char *name)
 121 {
 122         pmu_mfr_t mfr;
 123         struct pmu_alias *pa;
 124         struct pmu_alias *pmu_alias_table;
 125
 126         if ((mfr = pmu_events_mfr()) == PMU_INVALID)
 127                 return (name);
 128         if (mfr == PMU_AMD)
 129                 pmu_alias_table = pmu_amd_alias_table;
 130         else if (mfr == PMU_INTEL)
 131                 pmu_alias_table = pmu_intel_alias_table;
 132         else
 133                 return (name);
 134
 135         for (pa = pmu_alias_table; pa->pa_alias != NULL; pa++)
 136                 if (strcasecmp(name, pa->pa_alias) == 0)
 137                         return (pa->pa_name);
 138
 139         return (name);
 140 }
 141
 142 struct pmu_event_desc {
 143         uint64_t ped_period;
 144         uint64_t ped_offcore_rsp;
 145         uint64_t ped_l3_thread;
 146         uint64_t ped_l3_slice;
 147         uint32_t ped_event;
 148         uint32_t ped_frontend;
 149         uint32_t ped_ldlat;
 150         uint32_t ped_config1;
 151         int16_t ped_umask;
 152         uint8_t ped_cmask;
 153         uint8_t ped_any;
 154         uint8_t ped_inv;
 155         uint8_t ped_edge;
 156         uint8_t ped_fc_mask;
 157         uint8_t ped_ch_mask;
 158 };
 159
 160 static const struct pmu_events_map *
 161 pmu_events_map_get(const char *cpuid)
 162 {
 163         regex_t re;
 164         regmatch_t pmatch[1];
 165         char buf[PMC_CPUID_LEN];
 166         size_t s = sizeof(buf);
 167         int match;
 168         const struct pmu_events_map *pme;
 169
 170         if (cpuid != NULL) {
 171                 strlcpy(buf, cpuid, s);
 172         } else {
 173                 if (sysctlbyname("kern.hwpmc.cpuid", buf, &s,
 174                     (void *)NULL, 0) == -1)
 175                         return (NULL);
 176         }
 177         for (pme = pmu_events_map; pme->cpuid != NULL; pme++) {
 178                 if (regcomp(&re, pme->cpuid, REG_EXTENDED) != 0) {
 179                         printf("regex '%s' failed to compile, ignoring\n",
 180                             pme->cpuid);
 181                         continue;
 182                 }
 183                 match = regexec(&re, buf, 1, pmatch, 0);
 184                 regfree(&re);
 185                 if (match == 0) {
 186                         if (pmatch[0].rm_so == 0 && (buf[pmatch[0].rm_eo] == 0
 187                             || buf[pmatch[0].rm_eo] == '-'))
 188                                 return (pme);
 189                 }
 190         }
 191         return (NULL);
 192 }
 193
 194 static const struct pmu_event *
 195 pmu_event_get(const char *cpuid, const char *event_name, int *idx)
 196 {
 197         const struct pmu_events_map *pme;
 198         const struct pmu_event *pe;
 199         int i;
 200
 201         if ((pme = pmu_events_map_get(cpuid)) == NULL)
 202                 return (NULL);
 203         for (i = 0, pe = pme->table; pe->name || pe->desc || pe->event; pe++, i++) {
 204                 if (pe->name == NULL)
 205                         continue;
 206                 if (strcasecmp(pe->name, event_name) == 0) {
 207                         if (idx)
 208                                 *idx = i;
 209                         return (pe);
 210                 }
 211         }
 212         return (NULL);
 213 }
 214
 215 int
 216 pmc_pmu_idx_get_by_event(const char *cpuid, const char *event)
 217 {
 218         int idx;
 219         const char *realname;
 220
 221         realname = pmu_alias_get(event);
 222         if (pmu_event_get(cpuid, realname, &idx) == NULL)
 223                 return (-1);
 224         return (idx);
 225 }
 226
 227 const char *
 228 pmc_pmu_event_get_by_idx(const char *cpuid, int idx)
 229 {
 230         const struct pmu_events_map *pme;
 231
 232         if ((pme = pmu_events_map_get(cpuid)) == NULL)
 233                 return (NULL);
 234         assert(pme->table[idx].name);
 235         return (pme->table[idx].name);
 236 }
 237
 238 static int
 239 pmu_parse_event(struct pmu_event_desc *ped, const char *eventin)
 240 {
 241         char *event;
 242         char *kvp, *key, *value, *r;
 243         char *debug;
 244
 245         if ((event = strdup(eventin)) == NULL)
 246                 return (ENOMEM);
 247         r = event;
 248         bzero(ped, sizeof(*ped));
 249         ped->ped_period = DEFAULT_SAMPLE_COUNT;
 250         ped->ped_umask = -1;
 251         while ((kvp = strsep(&event, ",")) != NULL) {
 252                 key = strsep(&kvp, "=");
 253                 if (key == NULL)
 254                         abort();
 255                 value = kvp;
 256                 if (strcmp(key, "umask") == 0)
 257                         ped->ped_umask = strtol(value, NULL, 16);
 258                 else if (strcmp(key, "event") == 0)
 259                         ped->ped_event = strtol(value, NULL, 16);
 260                 else if (strcmp(key, "period") == 0)
 261                         ped->ped_period = strtol(value, NULL, 10);
 262                 else if (strcmp(key, "offcore_rsp") == 0)
 263                         ped->ped_offcore_rsp = strtol(value, NULL, 16);
 264                 else if (strcmp(key, "any") == 0)
 265                         ped->ped_any = strtol(value, NULL, 10);
 266                 else if (strcmp(key, "cmask") == 0)
 267                         ped->ped_cmask = strtol(value, NULL, 10);
 268                 else if (strcmp(key, "inv") == 0)
 269                         ped->ped_inv = strtol(value, NULL, 10);
 270                 else if (strcmp(key, "edge") == 0)
 271                         ped->ped_edge = strtol(value, NULL, 10);
 272                 else if (strcmp(key, "frontend") == 0)
 273                         ped->ped_frontend = strtol(value, NULL, 16);
 274                 else if (strcmp(key, "ldlat") == 0)
 275                         ped->ped_ldlat = strtol(value, NULL, 16);
 276                 else if (strcmp(key, "fc_mask") == 0)
 277                         ped->ped_fc_mask = strtol(value, NULL, 16);
 278                 else if (strcmp(key, "ch_mask") == 0)
 279                         ped->ped_ch_mask = strtol(value, NULL, 16);
 280                 else if (strcmp(key, "config1") == 0)
 281                         ped->ped_config1 = strtol(value, NULL, 16);
 282                 else if (strcmp(key, "l3_thread_mask") == 0)
 283                         ped->ped_l3_thread = strtol(value, NULL, 16);
 284                 else if (strcmp(key, "l3_slice_mask") == 0)
 285                         ped->ped_l3_slice = strtol(value, NULL, 16);
 286                 else {
 287                         debug = getenv("PMUDEBUG");
 288                         if (debug != NULL && strcmp(debug, "true") == 0 && value != NULL)
 289                                 printf("unrecognized kvpair: %s:%s\n", key, value);
 290                 }
 291         }
 292         free(r);
 293         return (0);
 294 }
 295
 296 uint64_t
 297 pmc_pmu_sample_rate_get(const char *event_name)
 298 {
 299         const struct pmu_event *pe;
 300         struct pmu_event_desc ped;
 301
 302         event_name = pmu_alias_get(event_name);
 303         if ((pe = pmu_event_get(NULL, event_name, NULL)) == NULL)
 304                 return (DEFAULT_SAMPLE_COUNT);
 305         if (pe->alias && (pe = pmu_event_get(NULL, pe->alias, NULL)) == NULL)
 306                 return (DEFAULT_SAMPLE_COUNT);
 307         if (pe->event == NULL)
 308                 return (DEFAULT_SAMPLE_COUNT);
 309         if (pmu_parse_event(&ped, pe->event))
 310                 return (DEFAULT_SAMPLE_COUNT);
 311         return (ped.ped_period);
 312 }
 313
 314 int
 315 pmc_pmu_enabled(void)
 316 {
 317
 318         return (pmu_events_map_get(NULL) != NULL);
 319 }
 320
 321 void
 322 pmc_pmu_print_counters(const char *event_name)
 323 {
 324         const struct pmu_events_map *pme;
 325         const struct pmu_event *pe;
 326         struct pmu_event_desc ped;
 327         char *debug;
 328         int do_debug;
 329
 330         debug = getenv("PMUDEBUG");
 331         do_debug = 0;
 332
 333         if (debug != NULL && strcmp(debug, "true") == 0)
 334                 do_debug = 1;
 335         if ((pme = pmu_events_map_get(NULL)) == NULL)
 336                 return;
 337         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 338                 if (pe->name == NULL)
 339                         continue;
 340                 if (event_name != NULL && strcasestr(pe->name, event_name) == NULL)
 341                         continue;
 342                 printf("\t%s\n", pe->name);
 343                 if (do_debug)
 344                         pmu_parse_event(&ped, pe->event);
 345         }
 346 }
 347
 348 void
 349 pmc_pmu_print_counter_desc(const char *ev)
 350 {
 351         const struct pmu_events_map *pme;
 352         const struct pmu_event *pe;
 353
 354         if ((pme = pmu_events_map_get(NULL)) == NULL)
 355                 return;
 356         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 357                 if (pe->name == NULL)
 358                         continue;
 359                 if (strcasestr(pe->name, ev) != NULL &&
 360                     pe->desc != NULL)
 361                         printf("%s:\t%s\n", pe->name, pe->desc);
 362         }
 363 }
 364
 365 void
 366 pmc_pmu_print_counter_desc_long(const char *ev)
 367 {
 368         const struct pmu_events_map *pme;
 369         const struct pmu_event *pe;
 370
 371         if ((pme = pmu_events_map_get(NULL)) == NULL)
 372                 return;
 373         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 374                 if (pe->name == NULL)
 375                         continue;
 376                 if (strcasestr(pe->name, ev) != NULL) {
 377                         if (pe->long_desc != NULL)
 378                                 printf("%s:\n%s\n", pe->name, pe->long_desc);
 379                         else if (pe->desc != NULL)
 380                                 printf("%s:\t%s\n", pe->name, pe->desc);
 381                 }
 382         }
 383 }
 384
 385 void
 386 pmc_pmu_print_counter_full(const char *ev)
 387 {
 388         const struct pmu_events_map *pme;
 389         const struct pmu_event *pe;
 390
 391         if ((pme = pmu_events_map_get(NULL)) == NULL)
 392                 return;
 393         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 394                 if (pe->name == NULL)
 395                         continue;
 396                 if (strcasestr(pe->name, ev) == NULL)
 397                         continue;
 398                 printf("name: %s\n", pe->name);
 399                 if (pe->long_desc != NULL)
 400                         printf("desc: %s\n", pe->long_desc);
 401                 else if (pe->desc != NULL)
 402                         printf("desc: %s\n", pe->desc);
 403                 if (pe->event != NULL)
 404                         printf("event: %s\n", pe->event);
 405                 if (pe->topic != NULL)
 406                         printf("topic: %s\n", pe->topic);
 407                 if (pe->pmu != NULL)
 408                         printf("pmu: %s\n", pe->pmu);
 409                 if (pe->unit != NULL)
 410                         printf("unit: %s\n", pe->unit);
 411                 if (pe->perpkg != NULL)
 412                         printf("perpkg: %s\n", pe->perpkg);
 413                 if (pe->metric_expr != NULL)
 414                         printf("metric_expr: %s\n", pe->metric_expr);
 415                 if (pe->metric_name != NULL)
 416                         printf("metric_name: %s\n", pe->metric_name);
 417                 if (pe->metric_group != NULL)
 418                         printf("metric_group: %s\n", pe->metric_group);
 419         }
 420 }
 421
 422 static int
 423 pmc_pmu_amd_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm,
 424         struct pmu_event_desc *ped)
 425 {
 426         struct pmc_md_amd_op_pmcallocate *amd;
 427         const struct pmu_event *pe;
 428         int idx = -1;
 429
 430         amd = &pm->pm_md.pm_amd;
 431         if (ped->ped_umask > 0) {
 432                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 433                 amd->pm_amd_config |= AMD_PMC_TO_UNITMASK(ped->ped_umask);
 434         }
 435         pm->pm_class = PMC_CLASS_K8;
 436         pe = pmu_event_get(NULL, event_name, &idx);
 437
 438         if (strcmp("l3cache", pe->topic) == 0){
 439                 amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK(ped->ped_event);
 440                 amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_L3_CACHE;
 441                 amd->pm_amd_config |= AMD_PMC_TO_L3SLICE(ped->ped_l3_slice);
 442                 amd->pm_amd_config |= AMD_PMC_TO_L3CORE(ped->ped_l3_thread);
 443         }
 444         else if (strcmp("data fabric", pe->topic) == 0){
 445
 446                 amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK_DF(ped->ped_event);
 447                 amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_DATA_FABRIC;
 448         }
 449         else{
 450                 amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK(ped->ped_event);
 451                 amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_CORE;
 452                 if ((pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 0 ||
 453                         (pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) ==
 454                         (PMC_CAP_USER|PMC_CAP_SYSTEM))
 455                         amd->pm_amd_config |= (AMD_PMC_USR | AMD_PMC_OS);
 456                 else if (pm->pm_caps & PMC_CAP_USER)
 457                         amd->pm_amd_config |= AMD_PMC_USR;
 458                 else if (pm->pm_caps & PMC_CAP_SYSTEM)
 459                         amd->pm_amd_config |= AMD_PMC_OS;
 460                 if (ped->ped_edge)
 461                         amd->pm_amd_config |= AMD_PMC_EDGE;
 462                 if (ped->ped_inv)
 463                         amd->pm_amd_config |= AMD_PMC_EDGE;
 464                 if (pm->pm_caps & PMC_CAP_INTERRUPT)
 465                         amd->pm_amd_config |= AMD_PMC_INT;
 466         }
 467         return (0);
 468 }
 469
 470 static int
 471 pmc_pmu_intel_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm,
 472         struct pmu_event_desc *ped)
 473 {
 474         struct pmc_md_iap_op_pmcallocate *iap;
 475         int isfixed;
 476
 477         isfixed = 0;
 478         iap = &pm->pm_md.pm_iap;
 479         if (strcasestr(event_name, "UNC_") == event_name ||
 480             strcasestr(event_name, "uncore") != NULL) {
 481                 pm->pm_class = PMC_CLASS_UCP;
 482                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 483         } else if ((ped->ped_umask == -1) ||
 484             (ped->ped_event == 0x0 && ped->ped_umask == 0x3)) {
 485                 pm->pm_class = PMC_CLASS_IAF;
 486         } else {
 487                 pm->pm_class = PMC_CLASS_IAP;
 488                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 489         }
 490         iap->pm_iap_config |= IAP_EVSEL(ped->ped_event);
 491         if (ped->ped_umask > 0)
 492                 iap->pm_iap_config |= IAP_UMASK(ped->ped_umask);
 493         iap->pm_iap_config |= IAP_CMASK(ped->ped_cmask);
 494         iap->pm_iap_rsp = ped->ped_offcore_rsp;
 495
 496         if ((pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 0 ||
 497                 (pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) ==
 498                 (PMC_CAP_USER|PMC_CAP_SYSTEM))
 499                 iap->pm_iap_config |= (IAP_USR | IAP_OS);
 500         else if (pm->pm_caps & PMC_CAP_USER)
 501                 iap->pm_iap_config |= IAP_USR;
 502         else if (pm->pm_caps & PMC_CAP_SYSTEM)
 503                 iap->pm_iap_config |= IAP_OS;
 504         if (ped->ped_edge)
 505                 iap->pm_iap_config |= IAP_EDGE;
 506         if (ped->ped_any)
 507                 iap->pm_iap_config |= IAP_ANY;
 508         if (ped->ped_inv)
 509                 iap->pm_iap_config |= IAP_EDGE;
 510         if (pm->pm_caps & PMC_CAP_INTERRUPT)
 511                 iap->pm_iap_config |= IAP_INT;
 512         return (0);
 513 }
 514
 515 int
 516 pmc_pmu_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm)
 517 {
 518         const struct pmu_event *pe;
 519         struct pmu_event_desc ped;
 520         pmu_mfr_t mfr;
 521         int idx = -1;
 522
 523         if ((mfr = pmu_events_mfr()) == PMU_INVALID)
 524                 return (ENOENT);
 525
 526         bzero(&pm->pm_md, sizeof(pm->pm_md));
 527         pm->pm_caps |= (PMC_CAP_READ | PMC_CAP_WRITE);
 528         event_name = pmu_alias_get(event_name);
 529         if ((pe = pmu_event_get(NULL, event_name, &idx)) == NULL)
 530                 return (ENOENT);
 531         if (pe->alias && (pe = pmu_event_get(NULL, pe->alias, &idx)) == NULL)
 532                 return (ENOENT);
 533         assert(idx >= 0);
 534         pm->pm_ev = idx;
 535
 536         if (pe->event == NULL)
 537                 return (ENOENT);
 538         if (pmu_parse_event(&ped, pe->event))
 539                 return (ENOENT);
 540
 541         if (mfr == PMU_INTEL)
 542                 return (pmc_pmu_intel_pmcallocate(event_name, pm, &ped));
 543         else
 544                 return (pmc_pmu_amd_pmcallocate(event_name, pm, &ped));
 545 }
 546
 547 /*
 548  * Ultimately rely on AMD calling theirs the same
 549  */
 550 static const char *stat_mode_cntrs[] = {
 551         "cpu_clk_unhalted.thread",
 552         "inst_retired.any",
 553         "br_inst_retired.all_branches",
 554         "br_misp_retired.all_branches",
 555         "longest_lat_cache.reference",
 556         "longest_lat_cache.miss",
 557 };
 558
 559 int
 560 pmc_pmu_stat_mode(const char ***cntrs)
 561 {
 562         if (pmc_pmu_enabled()) {
 563                 *cntrs = stat_mode_cntrs;
 564                 return (0);
 565         }
 566         return (EOPNOTSUPP);
 567 }
 568
 569 #else
 570
 571 uint64_t
 572 pmc_pmu_sample_rate_get(const char *event_name __unused)
 573 {
 574         return (DEFAULT_SAMPLE_COUNT);
 575 }
 576
 577 void
 578 pmc_pmu_print_counters(const char *event_name __unused)
 579 {
 580 }
 581
 582 void
 583 pmc_pmu_print_counter_desc(const char *e __unused)
 584 {
 585 }
 586
 587 void
 588 pmc_pmu_print_counter_desc_long(const char *e __unused)
 589 {
 590 }
 591
 592 void
 593 pmc_pmu_print_counter_full(const char *e __unused)
 594 {
 595
 596 }
 597
 598 int
 599 pmc_pmu_enabled(void)
 600 {
 601         return (0);
 602 }
 603
 604 int
 605 pmc_pmu_pmcallocate(const char *e __unused, struct pmc_op_pmcallocate *p __unused)
 606 {
 607         return (EOPNOTSUPP);
 608 }
 609
 610 const char *
 611 pmc_pmu_event_get_by_idx(const char *c __unused, int idx __unused)
 612 {
 613         return (NULL);
 614 }
 615
 616 int
 617 pmc_pmu_stat_mode(const char ***a __unused)
 618 {
 619         return (EOPNOTSUPP);
 620 }
 621
 622 int
 623 pmc_pmu_idx_get_by_event(const char *c __unused, const char *e __unused)
 624 {
 625         return (-1);
 626 }
 627
 628 #endif