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 <regex.h>
  38 #include <string.h>
  39 #include <pmc.h>
  40 #include <pmclog.h>
  41 #include <assert.h>
  42 #include <libpmcstat.h>
  43 #include "pmu-events/pmu-events.h"
  44
  45 #if defined(__amd64__) || defined(__i386__)
  46 struct pmu_alias {
  47         const char *pa_alias;
  48         const char *pa_name;
  49 };
  50
  51 typedef enum {
  52         PMU_INVALID,
  53         PMU_INTEL,
  54         PMU_AMD,
  55 } pmu_mfr_t;
  56
  57 static struct pmu_alias pmu_intel_alias_table[] = {
  58         {"UNHALTED_CORE_CYCLES", "CPU_CLK_UNHALTED.THREAD_P_ANY"},
  59         {"UNHALTED-CORE-CYCLES", "CPU_CLK_UNHALTED.THREAD_P_ANY"},
  60         {"LLC_MISSES", "LONGEST_LAT_CACHE.MISS"},
  61         {"LLC-MISSES", "LONGEST_LAT_CACHE.MISS"},
  62         {"LLC_REFERENCE", "LONGEST_LAT_CACHE.REFERENCE"},
  63         {"LLC-REFERENCE", "LONGEST_LAT_CACHE.REFERENCE"},
  64         {"LLC_MISS_RHITM", "mem_load_l3_miss_retired.remote_hitm"},
  65         {"LLC-MISS-RHITM", "mem_load_l3_miss_retired.remote_hitm"},
  66         {"RESOURCE_STALL", "RESOURCE_STALLS.ANY"},
  67         {"RESOURCE_STALLS_ANY", "RESOURCE_STALLS.ANY"},
  68         {"BRANCH_INSTRUCTION_RETIRED", "BR_INST_RETIRED.ALL_BRANCHES"},
  69         {"BRANCH-INSTRUCTION-RETIRED", "BR_INST_RETIRED.ALL_BRANCHES"},
  70         {"BRANCH_MISSES_RETIRED", "BR_MISP_RETIRED.ALL_BRANCHES"},
  71         {"BRANCH-MISSES-RETIRED", "BR_MISP_RETIRED.ALL_BRANCHES"},
  72         {"cycles", "tsc-tsc"},
  73         {"unhalted-cycles", "CPU_CLK_UNHALTED.THREAD_P_ANY"},
  74         {"instructions", "inst-retired.any_p"},
  75         {"branch-mispredicts", "br_misp_retired.all_branches"},
  76         {"branches", "br_inst_retired.all_branches"},
  77         {"interrupts", "hw_interrupts.received"},
  78         {"ic-misses", "frontend_retired.l1i_miss"},
  79         {NULL, NULL},
  80 };
  81
  82 static struct pmu_alias pmu_amd_alias_table[] = {
  83         {"UNHALTED_CORE_CYCLES", "ls_not_halted_cyc"},
  84         {"UNHALTED-CORE-CYCLES", "ls_not_halted_cyc"},
  85         {NULL, NULL},
  86 };
  87
  88
  89 static pmu_mfr_t
  90 pmu_events_mfr(void)
  91 {
  92         char *buf;
  93         size_t s;
  94         pmu_mfr_t mfr;
  95
  96         if (sysctlbyname("kern.hwpmc.cpuid", (void *)NULL, &s,
  97             (void *)NULL, 0) == -1)
  98                 return (PMU_INVALID);
  99         if ((buf = malloc(s + 1)) == NULL)
 100                 return (PMU_INVALID);
 101         if (sysctlbyname("kern.hwpmc.cpuid", buf, &s,
 102                 (void *)NULL, 0) == -1) {
 103                 free(buf);
 104                 return (PMU_INVALID);
 105         }
 106         if (strcasestr(buf, "AuthenticAMD") != NULL)
 107                 mfr = PMU_AMD;
 108         else if (strcasestr(buf, "GenuineIntel") != NULL)
 109                 mfr = PMU_INTEL;
 110         else
 111                 mfr = PMU_INVALID;
 112         free(buf);
 113         return (mfr);
 114 }
 115
 116 /*
 117  *  The Intel fixed mode counters are:
 118  *      "inst_retired.any",
 119  *      "cpu_clk_unhalted.thread",
 120  *      "cpu_clk_unhalted.thread_any",
 121  *      "cpu_clk_unhalted.ref_tsc",
 122  *
 123  */
 124
 125 static const char *
 126 pmu_alias_get(const char *name)
 127 {
 128         pmu_mfr_t mfr;
 129         struct pmu_alias *pa;
 130         struct pmu_alias *pmu_alias_table;
 131
 132         if ((mfr = pmu_events_mfr()) == PMU_INVALID)
 133                 return (name);
 134         if (mfr == PMU_AMD)
 135                 pmu_alias_table = pmu_amd_alias_table;
 136         else if (mfr == PMU_INTEL)
 137                 pmu_alias_table = pmu_intel_alias_table;
 138         else
 139                 return (name);
 140
 141         for (pa = pmu_alias_table; pa->pa_alias != NULL; pa++)
 142                 if (strcasecmp(name, pa->pa_alias) == 0)
 143                         return (pa->pa_name);
 144
 145         return (name);
 146 }
 147
 148 struct pmu_event_desc {
 149         uint64_t ped_period;
 150         uint64_t ped_offcore_rsp;
 151         uint64_t ped_l3_thread;
 152         uint64_t ped_l3_slice;
 153         uint32_t ped_event;
 154         uint32_t ped_frontend;
 155         uint32_t ped_ldlat;
 156         uint32_t ped_config1;
 157         int16_t ped_umask;
 158         uint8_t ped_cmask;
 159         uint8_t ped_any;
 160         uint8_t ped_inv;
 161         uint8_t ped_edge;
 162         uint8_t ped_fc_mask;
 163         uint8_t ped_ch_mask;
 164 };
 165
 166 static const struct pmu_events_map *
 167 pmu_events_map_get(const char *cpuid)
 168 {
 169         regex_t re;
 170         regmatch_t pmatch[1];
 171         size_t s, len;
 172         char buf[64];
 173         int match;
 174         const struct pmu_events_map *pme;
 175
 176         if (cpuid != NULL) {
 177                 memcpy(buf, cpuid, 64);
 178         } else {
 179                 if (sysctlbyname("kern.hwpmc.cpuid", (void *)NULL, &s,
 180                     (void *)NULL, 0) == -1)
 181                         return (NULL);
 182                 if (sysctlbyname("kern.hwpmc.cpuid", buf, &s,
 183                     (void *)NULL, 0) == -1)
 184                         return (NULL);
 185         }
 186         for (pme = pmu_events_map; pme->cpuid != NULL; pme++) {
 187                 if (regcomp(&re, pme->cpuid, REG_EXTENDED) != 0) {
 188                         printf("regex '%s' failed to compile, ignoring\n",
 189                             pme->cpuid);
 190                         continue;
 191                 }
 192                 match = regexec(&re, buf, 1, pmatch, 0);
 193                 regfree(&re);
 194                 if (match == 0) {
 195                         len = pmatch[0].rm_eo - pmatch[0].rm_so;
 196                         if(len == strlen(buf))
 197                                 return (pme);
 198                 }
 199         }
 200         return (NULL);
 201 }
 202
 203 static const struct pmu_event *
 204 pmu_event_get(const char *cpuid, const char *event_name, int *idx)
 205 {
 206         const struct pmu_events_map *pme;
 207         const struct pmu_event *pe;
 208         int i;
 209
 210         if ((pme = pmu_events_map_get(cpuid)) == NULL)
 211                 return (NULL);
 212         for (i = 0, pe = pme->table; pe->name || pe->desc || pe->event; pe++, i++) {
 213                 if (pe->name == NULL)
 214                         continue;
 215                 if (strcasecmp(pe->name, event_name) == 0) {
 216                         if (idx)
 217                                 *idx = i;
 218                         return (pe);
 219                 }
 220         }
 221         return (NULL);
 222 }
 223
 224 int
 225 pmc_pmu_idx_get_by_event(const char *cpuid, const char *event)
 226 {
 227         int idx;
 228         const char *realname;
 229
 230         realname = pmu_alias_get(event);
 231         if (pmu_event_get(cpuid, realname, &idx) == NULL)
 232                 return (-1);
 233         return (idx);
 234 }
 235
 236 const char *
 237 pmc_pmu_event_get_by_idx(const char *cpuid, int idx)
 238 {
 239         const struct pmu_events_map *pme;
 240
 241         if ((pme = pmu_events_map_get(cpuid)) == NULL)
 242                 return (NULL);
 243         assert(pme->table[idx].name);
 244         return (pme->table[idx].name);
 245 }
 246
 247 static int
 248 pmu_parse_event(struct pmu_event_desc *ped, const char *eventin)
 249 {
 250         char *event;
 251         char *kvp, *key, *value, *r;
 252         char *debug;
 253
 254         if ((event = strdup(eventin)) == NULL)
 255                 return (ENOMEM);
 256         r = event;
 257         bzero(ped, sizeof(*ped));
 258         ped->ped_period = DEFAULT_SAMPLE_COUNT;
 259         ped->ped_umask = -1;
 260         while ((kvp = strsep(&event, ",")) != NULL) {
 261                 key = strsep(&kvp, "=");
 262                 if (key == NULL)
 263                         abort();
 264                 value = kvp;
 265                 if (strcmp(key, "umask") == 0)
 266                         ped->ped_umask = strtol(value, NULL, 16);
 267                 else if (strcmp(key, "event") == 0)
 268                         ped->ped_event = strtol(value, NULL, 16);
 269                 else if (strcmp(key, "period") == 0)
 270                         ped->ped_period = strtol(value, NULL, 10);
 271                 else if (strcmp(key, "offcore_rsp") == 0)
 272                         ped->ped_offcore_rsp = strtol(value, NULL, 16);
 273                 else if (strcmp(key, "any") == 0)
 274                         ped->ped_any = strtol(value, NULL, 10);
 275                 else if (strcmp(key, "cmask") == 0)
 276                         ped->ped_cmask = strtol(value, NULL, 10);
 277                 else if (strcmp(key, "inv") == 0)
 278                         ped->ped_inv = strtol(value, NULL, 10);
 279                 else if (strcmp(key, "edge") == 0)
 280                         ped->ped_edge = strtol(value, NULL, 10);
 281                 else if (strcmp(key, "frontend") == 0)
 282                         ped->ped_frontend = strtol(value, NULL, 16);
 283                 else if (strcmp(key, "ldlat") == 0)
 284                         ped->ped_ldlat = strtol(value, NULL, 16);
 285                 else if (strcmp(key, "fc_mask") == 0)
 286                         ped->ped_fc_mask = strtol(value, NULL, 16);
 287                 else if (strcmp(key, "ch_mask") == 0)
 288                         ped->ped_ch_mask = strtol(value, NULL, 16);
 289                 else if (strcmp(key, "config1") == 0)
 290                         ped->ped_config1 = strtol(value, NULL, 16);
 291                 else if (strcmp(key, "l3_thread_mask") == 0)
 292                         ped->ped_l3_thread = strtol(value, NULL, 16);
 293                 else if (strcmp(key, "l3_slice_mask") == 0)
 294                         ped->ped_l3_slice = strtol(value, NULL, 16);
 295                 else {
 296                         debug = getenv("PMUDEBUG");
 297                         if (debug != NULL && strcmp(debug, "true") == 0 && value != NULL)
 298                                 printf("unrecognized kvpair: %s:%s\n", key, value);
 299                 }
 300         }
 301         free(r);
 302         return (0);
 303 }
 304
 305 uint64_t
 306 pmc_pmu_sample_rate_get(const char *event_name)
 307 {
 308         const struct pmu_event *pe;
 309         struct pmu_event_desc ped;
 310
 311         event_name = pmu_alias_get(event_name);
 312         if ((pe = pmu_event_get(NULL, event_name, NULL)) == NULL)
 313                 return (DEFAULT_SAMPLE_COUNT);
 314         if (pe->alias && (pe = pmu_event_get(NULL, pe->alias, NULL)) == NULL)
 315                 return (DEFAULT_SAMPLE_COUNT);
 316         if (pe->event == NULL)
 317                 return (DEFAULT_SAMPLE_COUNT);
 318         if (pmu_parse_event(&ped, pe->event))
 319                 return (DEFAULT_SAMPLE_COUNT);
 320         return (ped.ped_period);
 321 }
 322
 323 int
 324 pmc_pmu_enabled(void)
 325 {
 326
 327         return (pmu_events_map_get(NULL) != NULL);
 328 }
 329
 330 void
 331 pmc_pmu_print_counters(const char *event_name)
 332 {
 333         const struct pmu_events_map *pme;
 334         const struct pmu_event *pe;
 335         struct pmu_event_desc ped;
 336         char *debug;
 337         int do_debug;
 338
 339         debug = getenv("PMUDEBUG");
 340         do_debug = 0;
 341
 342         if (debug != NULL && strcmp(debug, "true") == 0)
 343                 do_debug = 1;
 344         if ((pme = pmu_events_map_get(NULL)) == NULL)
 345                 return;
 346         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 347                 if (pe->name == NULL)
 348                         continue;
 349                 if (event_name != NULL && strcasestr(pe->name, event_name) == NULL)
 350                         continue;
 351                 printf("\t%s\n", pe->name);
 352                 if (do_debug)
 353                         pmu_parse_event(&ped, pe->event);
 354         }
 355 }
 356
 357 void
 358 pmc_pmu_print_counter_desc(const char *ev)
 359 {
 360         const struct pmu_events_map *pme;
 361         const struct pmu_event *pe;
 362
 363         if ((pme = pmu_events_map_get(NULL)) == NULL)
 364                 return;
 365         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 366                 if (pe->name == NULL)
 367                         continue;
 368                 if (strcasestr(pe->name, ev) != NULL &&
 369                     pe->desc != NULL)
 370                         printf("%s:\t%s\n", pe->name, pe->desc);
 371         }
 372 }
 373
 374 void
 375 pmc_pmu_print_counter_desc_long(const char *ev)
 376 {
 377         const struct pmu_events_map *pme;
 378         const struct pmu_event *pe;
 379
 380         if ((pme = pmu_events_map_get(NULL)) == NULL)
 381                 return;
 382         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 383                 if (pe->name == NULL)
 384                         continue;
 385                 if (strcasestr(pe->name, ev) != NULL) {
 386                         if (pe->long_desc != NULL)
 387                                 printf("%s:\n%s\n", pe->name, pe->long_desc);
 388                         else if (pe->desc != NULL)
 389                                 printf("%s:\t%s\n", pe->name, pe->desc);
 390                 }
 391         }
 392 }
 393
 394 void
 395 pmc_pmu_print_counter_full(const char *ev)
 396 {
 397         const struct pmu_events_map *pme;
 398         const struct pmu_event *pe;
 399
 400         if ((pme = pmu_events_map_get(NULL)) == NULL)
 401                 return;
 402         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 403                 if (pe->name == NULL)
 404                         continue;
 405                 if (strcasestr(pe->name, ev) == NULL)
 406                         continue;
 407                 printf("name: %s\n", pe->name);
 408                 if (pe->long_desc != NULL)
 409                         printf("desc: %s\n", pe->long_desc);
 410                 else if (pe->desc != NULL)
 411                         printf("desc: %s\n", pe->desc);
 412                 if (pe->event != NULL)
 413                         printf("event: %s\n", pe->event);
 414                 if (pe->topic != NULL)
 415                         printf("topic: %s\n", pe->topic);
 416                 if (pe->pmu != NULL)
 417                         printf("pmu: %s\n", pe->pmu);
 418                 if (pe->unit != NULL)
 419                         printf("unit: %s\n", pe->unit);
 420                 if (pe->perpkg != NULL)
 421                         printf("perpkg: %s\n", pe->perpkg);
 422                 if (pe->metric_expr != NULL)
 423                         printf("metric_expr: %s\n", pe->metric_expr);
 424                 if (pe->metric_name != NULL)
 425                         printf("metric_name: %s\n", pe->metric_name);
 426                 if (pe->metric_group != NULL)
 427                         printf("metric_group: %s\n", pe->metric_group);
 428         }
 429 }
 430
 431 static int
 432 pmc_pmu_amd_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm,
 433         struct pmu_event_desc *ped)
 434 {
 435         struct pmc_md_amd_op_pmcallocate *amd;
 436         const struct pmu_event *pe;
 437         int idx = -1;
 438
 439         amd = &pm->pm_md.pm_amd;
 440         if (ped->ped_umask > 0) {
 441                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 442                 amd->pm_amd_config |= AMD_PMC_TO_UNITMASK(ped->ped_umask);
 443         }
 444         pm->pm_class = PMC_CLASS_K8;
 445         pe = pmu_event_get(NULL, event_name, &idx);
 446
 447         if (strcmp("l3cache", pe->topic) == 0){
 448                 amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK(ped->ped_event);
 449                 amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_L3_CACHE;
 450                 amd->pm_amd_config |= AMD_PMC_TO_L3SLICE(ped->ped_l3_slice);
 451                 amd->pm_amd_config |= AMD_PMC_TO_L3CORE(ped->ped_l3_thread);
 452         }
 453         else if (strcmp("data fabric", pe->topic) == 0){
 454
 455                 amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK_DF(ped->ped_event);
 456                 amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_DATA_FABRIC;
 457         }
 458         else{
 459                 amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK(ped->ped_event);
 460                 amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_CORE;
 461                 if ((pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 0 ||
 462                         (pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) ==
 463                         (PMC_CAP_USER|PMC_CAP_SYSTEM))
 464                         amd->pm_amd_config |= (AMD_PMC_USR | AMD_PMC_OS);
 465                 else if (pm->pm_caps & PMC_CAP_USER)
 466                         amd->pm_amd_config |= AMD_PMC_USR;
 467                 else if (pm->pm_caps & PMC_CAP_SYSTEM)
 468                         amd->pm_amd_config |= AMD_PMC_OS;
 469                 if (ped->ped_edge)
 470                         amd->pm_amd_config |= AMD_PMC_EDGE;
 471                 if (ped->ped_inv)
 472                         amd->pm_amd_config |= AMD_PMC_EDGE;
 473                 if (pm->pm_caps & PMC_CAP_INTERRUPT)
 474                         amd->pm_amd_config |= AMD_PMC_INT;
 475         }
 476         return (0);
 477 }
 478
 479 static int
 480 pmc_pmu_intel_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm,
 481         struct pmu_event_desc *ped)
 482 {
 483         struct pmc_md_iap_op_pmcallocate *iap;
 484         int isfixed;
 485
 486         isfixed = 0;
 487         iap = &pm->pm_md.pm_iap;
 488         if (strcasestr(event_name, "UNC_") == event_name ||
 489             strcasestr(event_name, "uncore") != NULL) {
 490                 pm->pm_class = PMC_CLASS_UCP;
 491                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 492         } else if ((ped->ped_umask == -1) ||
 493             (ped->ped_event == 0x0 && ped->ped_umask == 0x3)) {
 494                 pm->pm_class = PMC_CLASS_IAF;
 495         } else {
 496                 pm->pm_class = PMC_CLASS_IAP;
 497                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 498         }
 499         iap->pm_iap_config |= IAP_EVSEL(ped->ped_event);
 500         if (ped->ped_umask > 0)
 501                 iap->pm_iap_config |= IAP_UMASK(ped->ped_umask);
 502         iap->pm_iap_config |= IAP_CMASK(ped->ped_cmask);
 503         iap->pm_iap_rsp = ped->ped_offcore_rsp;
 504
 505         if ((pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 0 ||
 506                 (pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) ==
 507                 (PMC_CAP_USER|PMC_CAP_SYSTEM))
 508                 iap->pm_iap_config |= (IAP_USR | IAP_OS);
 509         else if (pm->pm_caps & PMC_CAP_USER)
 510                 iap->pm_iap_config |= IAP_USR;
 511         else if (pm->pm_caps & PMC_CAP_SYSTEM)
 512                 iap->pm_iap_config |= IAP_OS;
 513         if (ped->ped_edge)
 514                 iap->pm_iap_config |= IAP_EDGE;
 515         if (ped->ped_any)
 516                 iap->pm_iap_config |= IAP_ANY;
 517         if (ped->ped_inv)
 518                 iap->pm_iap_config |= IAP_EDGE;
 519         if (pm->pm_caps & PMC_CAP_INTERRUPT)
 520                 iap->pm_iap_config |= IAP_INT;
 521         return (0);
 522 }
 523
 524 int
 525 pmc_pmu_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm)
 526 {
 527         const struct pmu_event *pe;
 528         struct pmu_event_desc ped;
 529         pmu_mfr_t mfr;
 530         int idx = -1;
 531
 532         if ((mfr = pmu_events_mfr()) == PMU_INVALID)
 533                 return (ENOENT);
 534
 535         bzero(&pm->pm_md, sizeof(pm->pm_md));
 536         pm->pm_caps |= (PMC_CAP_READ | PMC_CAP_WRITE);
 537         event_name = pmu_alias_get(event_name);
 538         if ((pe = pmu_event_get(NULL, event_name, &idx)) == NULL)
 539                 return (ENOENT);
 540         if (pe->alias && (pe = pmu_event_get(NULL, pe->alias, &idx)) == NULL)
 541                 return (ENOENT);
 542         assert(idx >= 0);
 543         pm->pm_ev = idx;
 544
 545         if (pe->event == NULL)
 546                 return (ENOENT);
 547         if (pmu_parse_event(&ped, pe->event))
 548                 return (ENOENT);
 549
 550         if (mfr == PMU_INTEL)
 551                 return (pmc_pmu_intel_pmcallocate(event_name, pm, &ped));
 552         else
 553                 return (pmc_pmu_amd_pmcallocate(event_name, pm, &ped));
 554 }
 555
 556 /*
 557  * Ultimately rely on AMD calling theirs the same
 558  */
 559 static const char *stat_mode_cntrs[] = {
 560         "cpu_clk_unhalted.thread",
 561         "inst_retired.any",
 562         "br_inst_retired.all_branches",
 563         "br_misp_retired.all_branches",
 564         "longest_lat_cache.reference",
 565         "longest_lat_cache.miss",
 566 };
 567
 568 int
 569 pmc_pmu_stat_mode(const char ***cntrs)
 570 {
 571         if (pmc_pmu_enabled()) {
 572                 *cntrs = stat_mode_cntrs;
 573                 return (0);
 574         }
 575         return (EOPNOTSUPP);
 576 }
 577
 578 #else
 579
 580 uint64_t
 581 pmc_pmu_sample_rate_get(const char *event_name __unused)
 582 {
 583         return (DEFAULT_SAMPLE_COUNT);
 584 }
 585
 586 void
 587 pmc_pmu_print_counters(const char *event_name __unused)
 588 {
 589 }
 590
 591 void
 592 pmc_pmu_print_counter_desc(const char *e __unused)
 593 {
 594 }
 595
 596 void
 597 pmc_pmu_print_counter_desc_long(const char *e __unused)
 598 {
 599 }
 600
 601 void
 602 pmc_pmu_print_counter_full(const char *e __unused)
 603 {
 604
 605 }
 606
 607 int
 608 pmc_pmu_enabled(void)
 609 {
 610         return (0);
 611 }
 612
 613 int
 614 pmc_pmu_pmcallocate(const char *e __unused, struct pmc_op_pmcallocate *p __unused)
 615 {
 616         return (EOPNOTSUPP);
 617 }
 618
 619 const char *
 620 pmc_pmu_event_get_by_idx(const char *c __unused, int idx __unused)
 621 {
 622         return (NULL);
 623 }
 624
 625 int
 626 pmc_pmu_stat_mode(const char ***a __unused)
 627 {
 628         return (EOPNOTSUPP);
 629 }
 630
 631 int
 632 pmc_pmu_idx_get_by_event(const char *c __unused, const char *e __unused)
 633 {
 634         return (-1);
 635 }
 636
 637 #endif