lib/libpmc/libpmc_pmu_util.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2018, Matthew Macy
   5  * Copyright (c) 2021, The FreeBSD Foundation
   6  *
   7  * Portions of this software were developed by Mitchell Horne
   8  * under sponsorship from the FreeBSD Foundation.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  * $FreeBSD$
  32  *
  33  */
  34
  35 #include <sys/types.h>
  36 #include <sys/errno.h>
  37 #include <sys/pmc.h>
  38 #include <sys/sysctl.h>
  39 #include <stddef.h>
  40 #include <stdlib.h>
  41 #include <limits.h>
  42 #include <regex.h>
  43 #include <string.h>
  44 #include <pmc.h>
  45 #include <pmclog.h>
  46 #include <assert.h>
  47 #include <libpmcstat.h>
  48 #include "pmu-events/pmu-events.h"
  49
  50 struct pmu_alias {
  51         const char *pa_alias;
  52         const char *pa_name;
  53 };
  54
  55 #if defined(__amd64__) || defined(__i386__)
  56 typedef enum {
  57         PMU_INVALID,
  58         PMU_INTEL,
  59         PMU_AMD,
  60 } pmu_mfr_t;
  61
  62 static struct pmu_alias pmu_intel_alias_table[] = {
  63         {"UNHALTED_CORE_CYCLES", "CPU_CLK_UNHALTED.THREAD_P_ANY"},
  64         {"UNHALTED-CORE-CYCLES", "CPU_CLK_UNHALTED.THREAD_P_ANY"},
  65         {"LLC_MISSES", "LONGEST_LAT_CACHE.MISS"},
  66         {"LLC-MISSES", "LONGEST_LAT_CACHE.MISS"},
  67         {"LLC_REFERENCE", "LONGEST_LAT_CACHE.REFERENCE"},
  68         {"LLC-REFERENCE", "LONGEST_LAT_CACHE.REFERENCE"},
  69         {"LLC_MISS_RHITM", "mem_load_l3_miss_retired.remote_hitm"},
  70         {"LLC-MISS-RHITM", "mem_load_l3_miss_retired.remote_hitm"},
  71         {"RESOURCE_STALL", "RESOURCE_STALLS.ANY"},
  72         {"RESOURCE_STALLS_ANY", "RESOURCE_STALLS.ANY"},
  73         {"BRANCH_INSTRUCTION_RETIRED", "BR_INST_RETIRED.ALL_BRANCHES"},
  74         {"BRANCH-INSTRUCTION-RETIRED", "BR_INST_RETIRED.ALL_BRANCHES"},
  75         {"BRANCH_MISSES_RETIRED", "BR_MISP_RETIRED.ALL_BRANCHES"},
  76         {"BRANCH-MISSES-RETIRED", "BR_MISP_RETIRED.ALL_BRANCHES"},
  77         {"unhalted-cycles", "CPU_CLK_UNHALTED.THREAD_P_ANY"},
  78         {"instructions", "inst_retired.any_p"},
  79         {"branch-mispredicts", "br_misp_retired.all_branches"},
  80         {"branches", "br_inst_retired.all_branches"},
  81         {"interrupts", "hw_interrupts.received"},
  82         {"ic-misses", "frontend_retired.l1i_miss"},
  83         {NULL, NULL},
  84 };
  85
  86 static struct pmu_alias pmu_amd_alias_table[] = {
  87         {"UNHALTED_CORE_CYCLES", "ls_not_halted_cyc"},
  88         {"UNHALTED-CORE-CYCLES", "ls_not_halted_cyc"},
  89         {"LLC_MISSES", "l3_comb_clstr_state.request_miss"},
  90         {"LLC-MISSES", "l3_comb_clstr_state.request_miss"},
  91         {"LLC_REFERENCE", "l3_request_g1.caching_l3_cache_accesses"},
  92         {"LLC-REFERENCE", "l3_request_g1.caching_l3_cache_accesses"},
  93         {"BRANCH_INSTRUCTION_RETIRED", "ex_ret_brn"},
  94         {"BRANCH-INSTRUCTION-RETIRED", "ex_ret_brn"},
  95         {"BRANCH_MISSES_RETIRED", "ex_ret_brn_misp"},
  96         {"BRANCH-MISSES-RETIRED", "ex_ret_brn_misp"},
  97         {"unhalted-cycles", "ls_not_halted_cyc"},
  98         {"instructions", "ex_ret_instr",},
  99         {"branch-mispredicts", "ex_ret_brn_misp"},
 100         {"branches", "ex_ret_brn"},
 101         {"interrupts", "ls_int_taken"}, /* Not on amdzen1 */
 102         {NULL, NULL},
 103 };
 104
 105
 106 static pmu_mfr_t
 107 pmu_events_mfr(void)
 108 {
 109         char buf[PMC_CPUID_LEN];
 110         size_t s = sizeof(buf);
 111         pmu_mfr_t mfr;
 112
 113         if (sysctlbyname("kern.hwpmc.cpuid", buf, &s,
 114             (void *)NULL, 0) == -1)
 115                 return (PMU_INVALID);
 116         if (strcasestr(buf, "AuthenticAMD") != NULL ||
 117             strcasestr(buf, "HygonGenuine") != NULL)
 118                 mfr = PMU_AMD;
 119         else if (strcasestr(buf, "GenuineIntel") != NULL)
 120                 mfr = PMU_INTEL;
 121         else
 122                 mfr = PMU_INVALID;
 123         return (mfr);
 124 }
 125
 126 /*
 127  *  The Intel fixed mode counters are:
 128  *      "inst_retired.any",
 129  *      "cpu_clk_unhalted.thread",
 130  *      "cpu_clk_unhalted.thread_any",
 131  *      "cpu_clk_unhalted.ref_tsc",
 132  *
 133  */
 134
 135 static const char *
 136 pmu_alias_get(const char *name)
 137 {
 138         pmu_mfr_t mfr;
 139         struct pmu_alias *pa;
 140         struct pmu_alias *pmu_alias_table;
 141
 142         if ((mfr = pmu_events_mfr()) == PMU_INVALID)
 143                 return (name);
 144         if (mfr == PMU_AMD)
 145                 pmu_alias_table = pmu_amd_alias_table;
 146         else if (mfr == PMU_INTEL)
 147                 pmu_alias_table = pmu_intel_alias_table;
 148         else
 149                 return (name);
 150
 151         for (pa = pmu_alias_table; pa->pa_alias != NULL; pa++)
 152                 if (strcasecmp(name, pa->pa_alias) == 0)
 153                         return (pa->pa_name);
 154
 155         return (name);
 156 }
 157
 158 #elif defined(__aarch64__)
 159
 160 static struct pmu_alias pmu_armv8_alias_table[] = {
 161         {NULL, NULL},
 162 };
 163
 164 static const char *
 165 pmu_alias_get(const char *name)
 166 {
 167         struct pmu_alias *pa;
 168
 169         for (pa = pmu_armv8_alias_table; pa->pa_alias != NULL; pa++)
 170                 if (strcasecmp(name, pa->pa_alias) == 0)
 171                         return (pa->pa_name);
 172
 173         return (name);
 174 }
 175
 176 #else
 177
 178 static const char *
 179 pmu_alias_get(const char *name)
 180 {
 181
 182         return (name);
 183 }
 184 #endif
 185
 186 struct pmu_event_desc {
 187         uint64_t ped_period;
 188         uint64_t ped_offcore_rsp;
 189         uint64_t ped_l3_thread;
 190         uint64_t ped_l3_slice;
 191         uint32_t ped_event;
 192         uint32_t ped_frontend;
 193         uint32_t ped_ldlat;
 194         uint32_t ped_config1;
 195         int16_t ped_umask;
 196         uint8_t ped_cmask;
 197         uint8_t ped_any;
 198         uint8_t ped_inv;
 199         uint8_t ped_edge;
 200         uint8_t ped_fc_mask;
 201         uint8_t ped_ch_mask;
 202 };
 203
 204 static const struct pmu_events_map *
 205 pmu_events_map_get(const char *cpuid)
 206 {
 207         regex_t re;
 208         regmatch_t pmatch[1];
 209         char buf[PMC_CPUID_LEN];
 210         size_t s = sizeof(buf);
 211         int match;
 212         const struct pmu_events_map *pme;
 213
 214         if (cpuid != NULL) {
 215                 strlcpy(buf, cpuid, s);
 216         } else {
 217                 if (sysctlbyname("kern.hwpmc.cpuid", buf, &s,
 218                     (void *)NULL, 0) == -1)
 219                         return (NULL);
 220         }
 221         for (pme = pmu_events_map; pme->cpuid != NULL; pme++) {
 222                 if (regcomp(&re, pme->cpuid, REG_EXTENDED) != 0) {
 223                         printf("regex '%s' failed to compile, ignoring\n",
 224                             pme->cpuid);
 225                         continue;
 226                 }
 227                 match = regexec(&re, buf, 1, pmatch, 0);
 228                 regfree(&re);
 229                 if (match == 0) {
 230                         if (pmatch[0].rm_so == 0 && (buf[pmatch[0].rm_eo] == 0
 231                             || buf[pmatch[0].rm_eo] == '-'))
 232                                 return (pme);
 233                 }
 234         }
 235         return (NULL);
 236 }
 237
 238 static const struct pmu_event *
 239 pmu_event_get(const char *cpuid, const char *event_name, int *idx)
 240 {
 241         const struct pmu_events_map *pme;
 242         const struct pmu_event *pe;
 243         int i;
 244
 245         if ((pme = pmu_events_map_get(cpuid)) == NULL)
 246                 return (NULL);
 247         for (i = 0, pe = pme->table; pe->name || pe->desc || pe->event; pe++, i++) {
 248                 if (pe->name == NULL)
 249                         continue;
 250                 if (strcasecmp(pe->name, event_name) == 0) {
 251                         if (idx)
 252                                 *idx = i;
 253                         return (pe);
 254                 }
 255         }
 256         return (NULL);
 257 }
 258
 259 int
 260 pmc_pmu_idx_get_by_event(const char *cpuid, const char *event)
 261 {
 262         int idx;
 263         const char *realname;
 264
 265         realname = pmu_alias_get(event);
 266         if (pmu_event_get(cpuid, realname, &idx) == NULL)
 267                 return (-1);
 268         return (idx);
 269 }
 270
 271 const char *
 272 pmc_pmu_event_get_by_idx(const char *cpuid, int idx)
 273 {
 274         const struct pmu_events_map *pme;
 275
 276         if ((pme = pmu_events_map_get(cpuid)) == NULL)
 277                 return (NULL);
 278         assert(pme->table[idx].name);
 279         return (pme->table[idx].name);
 280 }
 281
 282 static int
 283 pmu_parse_event(struct pmu_event_desc *ped, const char *eventin)
 284 {
 285         char *event;
 286         char *kvp, *key, *value, *r;
 287         char *debug;
 288
 289         if ((event = strdup(eventin)) == NULL)
 290                 return (ENOMEM);
 291         r = event;
 292         bzero(ped, sizeof(*ped));
 293         ped->ped_period = DEFAULT_SAMPLE_COUNT;
 294         ped->ped_umask = -1;
 295         while ((kvp = strsep(&event, ",")) != NULL) {
 296                 key = strsep(&kvp, "=");
 297                 if (key == NULL)
 298                         abort();
 299                 value = kvp;
 300                 if (strcmp(key, "umask") == 0)
 301                         ped->ped_umask = strtol(value, NULL, 16);
 302                 else if (strcmp(key, "event") == 0)
 303                         ped->ped_event = strtol(value, NULL, 16);
 304                 else if (strcmp(key, "period") == 0)
 305                         ped->ped_period = strtol(value, NULL, 10);
 306                 else if (strcmp(key, "offcore_rsp") == 0)
 307                         ped->ped_offcore_rsp = strtol(value, NULL, 16);
 308                 else if (strcmp(key, "any") == 0)
 309                         ped->ped_any = strtol(value, NULL, 10);
 310                 else if (strcmp(key, "cmask") == 0)
 311                         ped->ped_cmask = strtol(value, NULL, 10);
 312                 else if (strcmp(key, "inv") == 0)
 313                         ped->ped_inv = strtol(value, NULL, 10);
 314                 else if (strcmp(key, "edge") == 0)
 315                         ped->ped_edge = strtol(value, NULL, 10);
 316                 else if (strcmp(key, "frontend") == 0)
 317                         ped->ped_frontend = strtol(value, NULL, 16);
 318                 else if (strcmp(key, "ldlat") == 0)
 319                         ped->ped_ldlat = strtol(value, NULL, 16);
 320                 else if (strcmp(key, "fc_mask") == 0)
 321                         ped->ped_fc_mask = strtol(value, NULL, 16);
 322                 else if (strcmp(key, "ch_mask") == 0)
 323                         ped->ped_ch_mask = strtol(value, NULL, 16);
 324                 else if (strcmp(key, "config1") == 0)
 325                         ped->ped_config1 = strtol(value, NULL, 16);
 326                 else if (strcmp(key, "l3_thread_mask") == 0)
 327                         ped->ped_l3_thread = strtol(value, NULL, 16);
 328                 else if (strcmp(key, "l3_slice_mask") == 0)
 329                         ped->ped_l3_slice = strtol(value, NULL, 16);
 330                 else {
 331                         debug = getenv("PMUDEBUG");
 332                         if (debug != NULL && strcmp(debug, "true") == 0 && value != NULL)
 333                                 printf("unrecognized kvpair: %s:%s\n", key, value);
 334                 }
 335         }
 336         free(r);
 337         return (0);
 338 }
 339
 340 uint64_t
 341 pmc_pmu_sample_rate_get(const char *event_name)
 342 {
 343         const struct pmu_event *pe;
 344         struct pmu_event_desc ped;
 345
 346         event_name = pmu_alias_get(event_name);
 347         if ((pe = pmu_event_get(NULL, event_name, NULL)) == NULL)
 348                 return (DEFAULT_SAMPLE_COUNT);
 349         if (pe->event == NULL)
 350                 return (DEFAULT_SAMPLE_COUNT);
 351         if (pmu_parse_event(&ped, pe->event))
 352                 return (DEFAULT_SAMPLE_COUNT);
 353         return (ped.ped_period);
 354 }
 355
 356 int
 357 pmc_pmu_enabled(void)
 358 {
 359
 360         return (pmu_events_map_get(NULL) != NULL);
 361 }
 362
 363 void
 364 pmc_pmu_print_counters(const char *event_name)
 365 {
 366         const struct pmu_events_map *pme;
 367         const struct pmu_event *pe;
 368         struct pmu_event_desc ped;
 369         char *debug;
 370         int do_debug;
 371
 372         debug = getenv("PMUDEBUG");
 373         do_debug = 0;
 374
 375         if (debug != NULL && strcmp(debug, "true") == 0)
 376                 do_debug = 1;
 377         if ((pme = pmu_events_map_get(NULL)) == NULL)
 378                 return;
 379         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 380                 if (pe->name == NULL)
 381                         continue;
 382                 if (event_name != NULL && strcasestr(pe->name, event_name) == NULL)
 383                         continue;
 384                 printf("\t%s\n", pe->name);
 385                 if (do_debug)
 386                         pmu_parse_event(&ped, pe->event);
 387         }
 388 }
 389
 390 void
 391 pmc_pmu_print_counter_desc(const char *ev)
 392 {
 393         const struct pmu_events_map *pme;
 394         const struct pmu_event *pe;
 395
 396         if ((pme = pmu_events_map_get(NULL)) == NULL)
 397                 return;
 398         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 399                 if (pe->name == NULL)
 400                         continue;
 401                 if (strcasestr(pe->name, ev) != NULL &&
 402                     pe->desc != NULL)
 403                         printf("%s:\t%s\n", pe->name, pe->desc);
 404         }
 405 }
 406
 407 void
 408 pmc_pmu_print_counter_desc_long(const char *ev)
 409 {
 410         const struct pmu_events_map *pme;
 411         const struct pmu_event *pe;
 412
 413         if ((pme = pmu_events_map_get(NULL)) == NULL)
 414                 return;
 415         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 416                 if (pe->name == NULL)
 417                         continue;
 418                 if (strcasestr(pe->name, ev) != NULL) {
 419                         if (pe->long_desc != NULL)
 420                                 printf("%s:\n%s\n", pe->name, pe->long_desc);
 421                         else if (pe->desc != NULL)
 422                                 printf("%s:\t%s\n", pe->name, pe->desc);
 423                 }
 424         }
 425 }
 426
 427 void
 428 pmc_pmu_print_counter_full(const char *ev)
 429 {
 430         const struct pmu_events_map *pme;
 431         const struct pmu_event *pe;
 432
 433         if ((pme = pmu_events_map_get(NULL)) == NULL)
 434                 return;
 435         for (pe = pme->table; pe->name || pe->desc || pe->event; pe++) {
 436                 if (pe->name == NULL)
 437                         continue;
 438                 if (strcasestr(pe->name, ev) == NULL)
 439                         continue;
 440                 printf("name: %s\n", pe->name);
 441                 if (pe->long_desc != NULL)
 442                         printf("desc: %s\n", pe->long_desc);
 443                 else if (pe->desc != NULL)
 444                         printf("desc: %s\n", pe->desc);
 445                 if (pe->event != NULL)
 446                         printf("event: %s\n", pe->event);
 447                 if (pe->topic != NULL)
 448                         printf("topic: %s\n", pe->topic);
 449                 if (pe->pmu != NULL)
 450                         printf("pmu: %s\n", pe->pmu);
 451                 if (pe->unit != NULL)
 452                         printf("unit: %s\n", pe->unit);
 453                 if (pe->perpkg != NULL)
 454                         printf("perpkg: %s\n", pe->perpkg);
 455                 if (pe->metric_expr != NULL)
 456                         printf("metric_expr: %s\n", pe->metric_expr);
 457                 if (pe->metric_name != NULL)
 458                         printf("metric_name: %s\n", pe->metric_name);
 459                 if (pe->metric_group != NULL)
 460                         printf("metric_group: %s\n", pe->metric_group);
 461         }
 462 }
 463
 464 #if defined(__amd64__) || defined(__i386__)
 465 static int
 466 pmc_pmu_amd_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm,
 467         struct pmu_event_desc *ped)
 468 {
 469         struct pmc_md_amd_op_pmcallocate *amd;
 470         const struct pmu_event *pe;
 471         int idx = -1;
 472
 473         amd = &pm->pm_md.pm_amd;
 474         if (ped->ped_umask > 0) {
 475                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 476                 amd->pm_amd_config |= AMD_PMC_TO_UNITMASK(ped->ped_umask);
 477         }
 478         pm->pm_class = PMC_CLASS_K8;
 479         pe = pmu_event_get(NULL, event_name, &idx);
 480
 481         if (strcmp("l3cache", pe->topic) == 0){
 482                 amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK(ped->ped_event);
 483                 amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_L3_CACHE;
 484                 amd->pm_amd_config |= AMD_PMC_TO_L3SLICE(ped->ped_l3_slice);
 485                 amd->pm_amd_config |= AMD_PMC_TO_L3CORE(ped->ped_l3_thread);
 486         }
 487         else if (strcmp("data fabric", pe->topic) == 0){
 488
 489                 amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK_DF(ped->ped_event);
 490                 amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_DATA_FABRIC;
 491         }
 492         else{
 493                 amd->pm_amd_config |= AMD_PMC_TO_EVENTMASK(ped->ped_event);
 494                 amd->pm_amd_sub_class = PMC_AMD_SUB_CLASS_CORE;
 495                 if ((pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 0 ||
 496                         (pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) ==
 497                         (PMC_CAP_USER|PMC_CAP_SYSTEM))
 498                         amd->pm_amd_config |= (AMD_PMC_USR | AMD_PMC_OS);
 499                 else if (pm->pm_caps & PMC_CAP_USER)
 500                         amd->pm_amd_config |= AMD_PMC_USR;
 501                 else if (pm->pm_caps & PMC_CAP_SYSTEM)
 502                         amd->pm_amd_config |= AMD_PMC_OS;
 503                 if (ped->ped_edge)
 504                         amd->pm_amd_config |= AMD_PMC_EDGE;
 505                 if (ped->ped_inv)
 506                         amd->pm_amd_config |= AMD_PMC_EDGE;
 507                 if (pm->pm_caps & PMC_CAP_INTERRUPT)
 508                         amd->pm_amd_config |= AMD_PMC_INT;
 509         }
 510         return (0);
 511 }
 512
 513 static int
 514 pmc_pmu_intel_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm,
 515         struct pmu_event_desc *ped)
 516 {
 517         struct pmc_md_iap_op_pmcallocate *iap;
 518
 519         iap = &pm->pm_md.pm_iap;
 520         if (strcasestr(event_name, "UNC_") == event_name ||
 521             strcasestr(event_name, "uncore") != NULL) {
 522                 pm->pm_class = PMC_CLASS_UCP;
 523                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 524         } else if (ped->ped_event == 0x0) {
 525                 pm->pm_class = PMC_CLASS_IAF;
 526         } else {
 527                 pm->pm_class = PMC_CLASS_IAP;
 528                 pm->pm_caps |= PMC_CAP_QUALIFIER;
 529         }
 530         iap->pm_iap_config |= IAP_EVSEL(ped->ped_event);
 531         if (ped->ped_umask > 0)
 532                 iap->pm_iap_config |= IAP_UMASK(ped->ped_umask);
 533         iap->pm_iap_config |= IAP_CMASK(ped->ped_cmask);
 534         iap->pm_iap_rsp = ped->ped_offcore_rsp;
 535
 536         if ((pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) == 0 ||
 537                 (pm->pm_caps & (PMC_CAP_USER|PMC_CAP_SYSTEM)) ==
 538                 (PMC_CAP_USER|PMC_CAP_SYSTEM))
 539                 iap->pm_iap_config |= (IAP_USR | IAP_OS);
 540         else if (pm->pm_caps & PMC_CAP_USER)
 541                 iap->pm_iap_config |= IAP_USR;
 542         else if (pm->pm_caps & PMC_CAP_SYSTEM)
 543                 iap->pm_iap_config |= IAP_OS;
 544         if (ped->ped_edge)
 545                 iap->pm_iap_config |= IAP_EDGE;
 546         if (ped->ped_any)
 547                 iap->pm_iap_config |= IAP_ANY;
 548         if (ped->ped_inv)
 549                 iap->pm_iap_config |= IAP_EDGE;
 550         if (pm->pm_caps & PMC_CAP_INTERRUPT)
 551                 iap->pm_iap_config |= IAP_INT;
 552         return (0);
 553 }
 554
 555 int
 556 pmc_pmu_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm)
 557 {
 558         const struct pmu_event *pe;
 559         struct pmu_event_desc ped;
 560         pmu_mfr_t mfr;
 561         int idx = -1;
 562
 563         if ((mfr = pmu_events_mfr()) == PMU_INVALID)
 564                 return (ENOENT);
 565
 566         bzero(&pm->pm_md, sizeof(pm->pm_md));
 567         pm->pm_caps |= (PMC_CAP_READ | PMC_CAP_WRITE);
 568         event_name = pmu_alias_get(event_name);
 569         if ((pe = pmu_event_get(NULL, event_name, &idx)) == NULL)
 570                 return (ENOENT);
 571         assert(idx >= 0);
 572         pm->pm_ev = idx;
 573
 574         if (pe->event == NULL)
 575                 return (ENOENT);
 576         if (pmu_parse_event(&ped, pe->event))
 577                 return (ENOENT);
 578
 579         if (mfr == PMU_INTEL)
 580                 return (pmc_pmu_intel_pmcallocate(event_name, pm, &ped));
 581         else
 582                 return (pmc_pmu_amd_pmcallocate(event_name, pm, &ped));
 583 }
 584
 585 #elif defined(__aarch64__)
 586
 587 int
 588 pmc_pmu_pmcallocate(const char *event_name, struct pmc_op_pmcallocate *pm)
 589 {
 590         const struct pmu_event *pe;
 591         struct pmu_event_desc ped;
 592         int idx = -1;
 593
 594         event_name = pmu_alias_get(event_name);
 595         if ((pe = pmu_event_get(NULL, event_name, &idx)) == NULL)
 596                 return (ENOENT);
 597         if (pe->event == NULL)
 598                 return (ENOENT);
 599         if (pmu_parse_event(&ped, pe->event))
 600                 return (ENOENT);
 601
 602         assert(idx >= 0);
 603         pm->pm_ev = idx;
 604         pm->pm_md.pm_md_config = ped.ped_event;
 605         pm->pm_md.pm_md_flags |= PM_MD_RAW_EVENT;
 606         pm->pm_class = PMC_CLASS_ARMV8;
 607         pm->pm_caps |= (PMC_CAP_READ | PMC_CAP_WRITE);
 608
 609         return (0);
 610 }
 611
 612 #else
 613
 614 int
 615 pmc_pmu_pmcallocate(const char *e __unused, struct pmc_op_pmcallocate *p __unused)
 616 {
 617         return (EOPNOTSUPP);
 618 }
 619 #endif