lib/librte_eal/common/rte_service.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2017 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stdio.h>
  35 #include <unistd.h>
  36 #include <inttypes.h>
  37 #include <limits.h>
  38 #include <string.h>
  39 #include <dirent.h>
  40
  41 #include <rte_service.h>
  42 #include "include/rte_service_component.h"
  43
  44 #include <rte_eal.h>
  45 #include <rte_lcore.h>
  46 #include <rte_common.h>
  47 #include <rte_debug.h>
  48 #include <rte_cycles.h>
  49 #include <rte_atomic.h>
  50 #include <rte_memory.h>
  51 #include <rte_malloc.h>
  52
  53 #define RTE_SERVICE_NUM_MAX 64
  54
  55 #define SERVICE_F_REGISTERED    (1 << 0)
  56 #define SERVICE_F_STATS_ENABLED (1 << 1)
  57
  58 /* runstates for services and lcores, denoting if they are active or not */
  59 #define RUNSTATE_STOPPED 0
  60 #define RUNSTATE_RUNNING 1
  61
  62 /* internal representation of a service */
  63 struct rte_service_spec_impl {
  64         /* public part of the struct */
  65         struct rte_service_spec spec;
  66
  67         /* atomic lock that when set indicates a service core is currently
  68          * running this service callback. When not set, a core may take the
  69          * lock and then run the service callback.
  70          */
  71         rte_atomic32_t execute_lock;
  72
  73         /* API set/get-able variables */
  74         int32_t runstate;
  75         uint8_t internal_flags;
  76
  77         /* per service statistics */
  78         uint32_t num_mapped_cores;
  79         uint64_t calls;
  80         uint64_t cycles_spent;
  81 } __rte_cache_aligned;
  82
  83 /* the internal values of a service core */
  84 struct core_state {
  85         /* map of services IDs are run on this core */
  86         uint64_t service_mask;
  87         uint8_t runstate; /* running or stopped */
  88         uint8_t is_service_core; /* set if core is currently a service core */
  89
  90         /* extreme statistics */
  91         uint64_t calls_per_service[RTE_SERVICE_NUM_MAX];
  92 } __rte_cache_aligned;
  93
  94 static uint32_t rte_service_count;
  95 static struct rte_service_spec_impl *rte_services;
  96 static struct core_state *lcore_states;
  97 static uint32_t rte_service_library_initialized;
  98
  99 int32_t rte_service_init(void)
 100 {
 101         if (rte_service_library_initialized) {
 102                 printf("service library init() called, init flag %d\n",
 103                         rte_service_library_initialized);
 104                 return -EALREADY;
 105         }
 106
 107         rte_services = rte_calloc("rte_services", RTE_SERVICE_NUM_MAX,
 108                         sizeof(struct rte_service_spec_impl),
 109                         RTE_CACHE_LINE_SIZE);
 110         if (!rte_services) {
 111                 printf("error allocating rte services array\n");
 112                 return -ENOMEM;
 113         }
 114
 115         lcore_states = rte_calloc("rte_service_core_states", RTE_MAX_LCORE,
 116                         sizeof(struct core_state), RTE_CACHE_LINE_SIZE);
 117         if (!lcore_states) {
 118                 printf("error allocating core states array\n");
 119                 return -ENOMEM;
 120         }
 121
 122         int i;
 123         int count = 0;
 124         struct rte_config *cfg = rte_eal_get_configuration();
 125         for (i = 0; i < RTE_MAX_LCORE; i++) {
 126                 if (lcore_config[i].core_role == ROLE_SERVICE) {
 127                         if ((unsigned int)i == cfg->master_lcore)
 128                                 continue;
 129                         rte_service_lcore_add(i);
 130                         count++;
 131                 }
 132         }
 133
 134         rte_service_library_initialized = 1;
 135         return 0;
 136 }
 137
 138 /* returns 1 if service is registered and has not been unregistered
 139  * Returns 0 if service never registered, or has been unregistered
 140  */
 141 static inline int
 142 service_valid(uint32_t id)
 143 {
 144         return !!(rte_services[id].internal_flags & SERVICE_F_REGISTERED);
 145 }
 146
 147 /* returns 1 if statistics should be colleced for service
 148  * Returns 0 if statistics should not be collected for service
 149  */
 150 static inline int
 151 service_stats_enabled(struct rte_service_spec_impl *impl)
 152 {
 153         return !!(impl->internal_flags & SERVICE_F_STATS_ENABLED);
 154 }
 155
 156 static inline int
 157 service_mt_safe(struct rte_service_spec_impl *s)
 158 {
 159         return s->spec.capabilities & RTE_SERVICE_CAP_MT_SAFE;
 160 }
 161
 162 int32_t rte_service_set_stats_enable(struct rte_service_spec *service,
 163                                   int32_t enabled)
 164 {
 165         struct rte_service_spec_impl *impl =
 166                 (struct rte_service_spec_impl *)service;
 167         if (!impl)
 168                 return -EINVAL;
 169
 170         if (enabled)
 171                 impl->internal_flags |= SERVICE_F_STATS_ENABLED;
 172         else
 173                 impl->internal_flags &= ~(SERVICE_F_STATS_ENABLED);
 174
 175         return 0;
 176 }
 177
 178 uint32_t
 179 rte_service_get_count(void)
 180 {
 181         return rte_service_count;
 182 }
 183
 184 struct rte_service_spec *
 185 rte_service_get_by_id(uint32_t id)
 186 {
 187         struct rte_service_spec *service = NULL;
 188         if (id < rte_service_count)
 189                 service = (struct rte_service_spec *)&rte_services[id];
 190
 191         return service;
 192 }
 193
 194 struct rte_service_spec *rte_service_get_by_name(const char *name)
 195 {
 196         struct rte_service_spec *service = NULL;
 197         int i;
 198         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 199                 if (service_valid(i) &&
 200                                 strcmp(name, rte_services[i].spec.name) == 0) {
 201                         service = (struct rte_service_spec *)&rte_services[i];
 202                         break;
 203                 }
 204         }
 205
 206         return service;
 207 }
 208
 209 const char *
 210 rte_service_get_name(const struct rte_service_spec *service)
 211 {
 212         return service->name;
 213 }
 214
 215 int32_t
 216 rte_service_probe_capability(const struct rte_service_spec *service,
 217                              uint32_t capability)
 218 {
 219         return service->capabilities & capability;
 220 }
 221
 222 int32_t
 223 rte_service_is_running(const struct rte_service_spec *spec)
 224 {
 225         const struct rte_service_spec_impl *impl =
 226                 (const struct rte_service_spec_impl *)spec;
 227         if (!impl)
 228                 return -EINVAL;
 229
 230         return (impl->runstate == RUNSTATE_RUNNING) &&
 231                 (impl->num_mapped_cores > 0);
 232 }
 233
 234 int32_t
 235 rte_service_register(const struct rte_service_spec *spec)
 236 {
 237         uint32_t i;
 238         int32_t free_slot = -1;
 239
 240         if (spec->callback == NULL || strlen(spec->name) == 0)
 241                 return -EINVAL;
 242
 243         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 244                 if (!service_valid(i)) {
 245                         free_slot = i;
 246                         break;
 247                 }
 248         }
 249
 250         if ((free_slot < 0) || (i == RTE_SERVICE_NUM_MAX))
 251                 return -ENOSPC;
 252
 253         struct rte_service_spec_impl *s = &rte_services[free_slot];
 254         s->spec = *spec;
 255         s->internal_flags |= SERVICE_F_REGISTERED;
 256
 257         rte_smp_wmb();
 258         rte_service_count++;
 259
 260         return 0;
 261 }
 262
 263 int32_t
 264 rte_service_unregister(struct rte_service_spec *spec)
 265 {
 266         struct rte_service_spec_impl *s = NULL;
 267         struct rte_service_spec_impl *spec_impl =
 268                 (struct rte_service_spec_impl *)spec;
 269
 270         uint32_t i;
 271         uint32_t service_id;
 272         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 273                 if (&rte_services[i] == spec_impl) {
 274                         s = spec_impl;
 275                         service_id = i;
 276                         break;
 277                 }
 278         }
 279
 280         if (!s)
 281                 return -EINVAL;
 282
 283         rte_service_count--;
 284         rte_smp_wmb();
 285
 286         s->internal_flags &= ~(SERVICE_F_REGISTERED);
 287
 288         for (i = 0; i < RTE_MAX_LCORE; i++)
 289                 lcore_states[i].service_mask &= ~(UINT64_C(1) << service_id);
 290
 291         memset(&rte_services[service_id], 0,
 292                         sizeof(struct rte_service_spec_impl));
 293
 294         return 0;
 295 }
 296
 297 int32_t
 298 rte_service_start(struct rte_service_spec *service)
 299 {
 300         struct rte_service_spec_impl *s =
 301                 (struct rte_service_spec_impl *)service;
 302         s->runstate = RUNSTATE_RUNNING;
 303         rte_smp_wmb();
 304         return 0;
 305 }
 306
 307 int32_t
 308 rte_service_stop(struct rte_service_spec *service)
 309 {
 310         struct rte_service_spec_impl *s =
 311                 (struct rte_service_spec_impl *)service;
 312         s->runstate = RUNSTATE_STOPPED;
 313         rte_smp_wmb();
 314         return 0;
 315 }
 316
 317 static int32_t
 318 rte_service_runner_func(void *arg)
 319 {
 320         RTE_SET_USED(arg);
 321         uint32_t i;
 322         const int lcore = rte_lcore_id();
 323         struct core_state *cs = &lcore_states[lcore];
 324
 325         while (lcore_states[lcore].runstate == RUNSTATE_RUNNING) {
 326                 const uint64_t service_mask = cs->service_mask;
 327                 for (i = 0; i < rte_service_count; i++) {
 328                         struct rte_service_spec_impl *s = &rte_services[i];
 329                         if (s->runstate != RUNSTATE_RUNNING ||
 330                                         !(service_mask & (UINT64_C(1) << i)))
 331                                 continue;
 332
 333                         /* check do we need cmpset, if MT safe or <= 1 core
 334                          * mapped, atomic ops are not required.
 335                          */
 336                         const int need_cmpset = !((service_mt_safe(s) == 0) &&
 337                                                 (s->num_mapped_cores > 1));
 338                         uint32_t *lock = (uint32_t *)&s->execute_lock;
 339
 340                         if (need_cmpset || rte_atomic32_cmpset(lock, 0, 1)) {
 341                                 void *userdata = s->spec.callback_userdata;
 342
 343                                 if (service_stats_enabled(s)) {
 344                                         uint64_t start = rte_rdtsc();
 345                                         s->spec.callback(userdata);
 346                                         uint64_t end = rte_rdtsc();
 347                                         s->cycles_spent += end - start;
 348                                         cs->calls_per_service[i]++;
 349                                         s->calls++;
 350                                 } else
 351                                         s->spec.callback(userdata);
 352
 353                                 if (need_cmpset)
 354                                         rte_atomic32_clear(&s->execute_lock);
 355                         }
 356                 }
 357
 358                 rte_smp_rmb();
 359         }
 360
 361         lcore_config[lcore].state = WAIT;
 362
 363         return 0;
 364 }
 365
 366 int32_t
 367 rte_service_lcore_count(void)
 368 {
 369         int32_t count = 0;
 370         uint32_t i;
 371         for (i = 0; i < RTE_MAX_LCORE; i++)
 372                 count += lcore_states[i].is_service_core;
 373         return count;
 374 }
 375
 376 int32_t
 377 rte_service_lcore_list(uint32_t array[], uint32_t n)
 378 {
 379         uint32_t count = rte_service_lcore_count();
 380         if (count > n)
 381                 return -ENOMEM;
 382
 383         if (!array)
 384                 return -EINVAL;
 385
 386         uint32_t i;
 387         uint32_t idx = 0;
 388         for (i = 0; i < RTE_MAX_LCORE; i++) {
 389                 struct core_state *cs = &lcore_states[i];
 390                 if (cs->is_service_core) {
 391                         array[idx] = i;
 392                         idx++;
 393                 }
 394         }
 395
 396         return count;
 397 }
 398
 399 int32_t
 400 rte_service_start_with_defaults(void)
 401 {
 402         /* create a default mapping from cores to services, then start the
 403          * services to make them transparent to unaware applications.
 404          */
 405         uint32_t i;
 406         int ret;
 407         uint32_t count = rte_service_get_count();
 408
 409         int32_t lcore_iter = 0;
 410         uint32_t ids[RTE_MAX_LCORE];
 411         int32_t lcore_count = rte_service_lcore_list(ids, RTE_MAX_LCORE);
 412
 413         if (lcore_count == 0)
 414                 return -ENOTSUP;
 415
 416         for (i = 0; (int)i < lcore_count; i++)
 417                 rte_service_lcore_start(ids[i]);
 418
 419         for (i = 0; i < count; i++) {
 420                 struct rte_service_spec *s = rte_service_get_by_id(i);
 421                 if (!s)
 422                         return -EINVAL;
 423
 424                 /* do 1:1 core mapping here, with each service getting
 425                  * assigned a single core by default. Adding multiple services
 426                  * should multiplex to a single core, or 1:1 if there are the
 427                  * same amount of services as service-cores
 428                  */
 429                 ret = rte_service_enable_on_lcore(s, ids[lcore_iter]);
 430                 if (ret)
 431                         return -ENODEV;
 432
 433                 lcore_iter++;
 434                 if (lcore_iter >= lcore_count)
 435                         lcore_iter = 0;
 436
 437                 ret = rte_service_start(s);
 438                 if (ret)
 439                         return -ENOEXEC;
 440         }
 441
 442         return 0;
 443 }
 444
 445 static int32_t
 446 service_update(struct rte_service_spec *service, uint32_t lcore,
 447                 uint32_t *set, uint32_t *enabled)
 448 {
 449         uint32_t i;
 450         int32_t sid = -1;
 451
 452         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 453                 if ((struct rte_service_spec *)&rte_services[i] == service &&
 454                                 service_valid(i)) {
 455                         sid = i;
 456                         break;
 457                 }
 458         }
 459
 460         if (sid == -1 || lcore >= RTE_MAX_LCORE)
 461                 return -EINVAL;
 462
 463         if (!lcore_states[lcore].is_service_core)
 464                 return -EINVAL;
 465
 466         uint64_t sid_mask = UINT64_C(1) << sid;
 467         if (set) {
 468                 if (*set) {
 469                         lcore_states[lcore].service_mask |= sid_mask;
 470                         rte_services[sid].num_mapped_cores++;
 471                 } else {
 472                         lcore_states[lcore].service_mask &= ~(sid_mask);
 473                         rte_services[sid].num_mapped_cores--;
 474                 }
 475         }
 476
 477         if (enabled)
 478                 *enabled = (lcore_states[lcore].service_mask & (sid_mask));
 479
 480         rte_smp_wmb();
 481
 482         return 0;
 483 }
 484
 485 int32_t rte_service_get_enabled_on_lcore(struct rte_service_spec *service,
 486                                         uint32_t lcore)
 487 {
 488         uint32_t enabled;
 489         int ret = service_update(service, lcore, 0, &enabled);
 490         if (ret == 0)
 491                 return enabled;
 492         return -EINVAL;
 493 }
 494
 495 int32_t
 496 rte_service_enable_on_lcore(struct rte_service_spec *service, uint32_t lcore)
 497 {
 498         uint32_t on = 1;
 499         return service_update(service, lcore, &on, 0);
 500 }
 501
 502 int32_t
 503 rte_service_disable_on_lcore(struct rte_service_spec *service, uint32_t lcore)
 504 {
 505         uint32_t off = 0;
 506         return service_update(service, lcore, &off, 0);
 507 }
 508
 509 int32_t rte_service_lcore_reset_all(void)
 510 {
 511         /* loop over cores, reset all to mask 0 */
 512         uint32_t i;
 513         for (i = 0; i < RTE_MAX_LCORE; i++) {
 514                 lcore_states[i].service_mask = 0;
 515                 lcore_states[i].is_service_core = 0;
 516                 lcore_states[i].runstate = RUNSTATE_STOPPED;
 517         }
 518         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++)
 519                 rte_services[i].num_mapped_cores = 0;
 520
 521         rte_smp_wmb();
 522
 523         return 0;
 524 }
 525
 526 static void
 527 set_lcore_state(uint32_t lcore, int32_t state)
 528 {
 529         /* mark core state in hugepage backed config */
 530         struct rte_config *cfg = rte_eal_get_configuration();
 531         cfg->lcore_role[lcore] = state;
 532
 533         /* mark state in process local lcore_config */
 534         lcore_config[lcore].core_role = state;
 535
 536         /* update per-lcore optimized state tracking */
 537         lcore_states[lcore].is_service_core = (state == ROLE_SERVICE);
 538 }
 539
 540 int32_t
 541 rte_service_lcore_add(uint32_t lcore)
 542 {
 543         if (lcore >= RTE_MAX_LCORE)
 544                 return -EINVAL;
 545         if (lcore_states[lcore].is_service_core)
 546                 return -EALREADY;
 547
 548         set_lcore_state(lcore, ROLE_SERVICE);
 549
 550         /* ensure that after adding a core the mask and state are defaults */
 551         lcore_states[lcore].service_mask = 0;
 552         lcore_states[lcore].runstate = RUNSTATE_STOPPED;
 553
 554         rte_smp_wmb();
 555         return 0;
 556 }
 557
 558 int32_t
 559 rte_service_lcore_del(uint32_t lcore)
 560 {
 561         if (lcore >= RTE_MAX_LCORE)
 562                 return -EINVAL;
 563
 564         struct core_state *cs = &lcore_states[lcore];
 565         if (!cs->is_service_core)
 566                 return -EINVAL;
 567
 568         if (cs->runstate != RUNSTATE_STOPPED)
 569                 return -EBUSY;
 570
 571         set_lcore_state(lcore, ROLE_RTE);
 572
 573         rte_smp_wmb();
 574         return 0;
 575 }
 576
 577 int32_t
 578 rte_service_lcore_start(uint32_t lcore)
 579 {
 580         if (lcore >= RTE_MAX_LCORE)
 581                 return -EINVAL;
 582
 583         struct core_state *cs = &lcore_states[lcore];
 584         if (!cs->is_service_core)
 585                 return -EINVAL;
 586
 587         if (cs->runstate == RUNSTATE_RUNNING)
 588                 return -EALREADY;
 589
 590         /* set core to run state first, and then launch otherwise it will
 591          * return immediately as runstate keeps it in the service poll loop
 592          */
 593         lcore_states[lcore].runstate = RUNSTATE_RUNNING;
 594
 595         int ret = rte_eal_remote_launch(rte_service_runner_func, 0, lcore);
 596         /* returns -EBUSY if the core is already launched, 0 on success */
 597         return ret;
 598 }
 599
 600 int32_t
 601 rte_service_lcore_stop(uint32_t lcore)
 602 {
 603         if (lcore >= RTE_MAX_LCORE)
 604                 return -EINVAL;
 605
 606         if (lcore_states[lcore].runstate == RUNSTATE_STOPPED)
 607                 return -EALREADY;
 608
 609         uint32_t i;
 610         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 611                 int32_t enabled =
 612                         lcore_states[i].service_mask & (UINT64_C(1) << i);
 613                 int32_t service_running = rte_services[i].runstate !=
 614                                                 RUNSTATE_STOPPED;
 615                 int32_t only_core = rte_services[i].num_mapped_cores == 1;
 616
 617                 /* if the core is mapped, and the service is running, and this
 618                  * is the only core that is mapped, the service would cease to
 619                  * run if this core stopped, so fail instead.
 620                  */
 621                 if (enabled && service_running && only_core)
 622                         return -EBUSY;
 623         }
 624
 625         lcore_states[lcore].runstate = RUNSTATE_STOPPED;
 626
 627         return 0;
 628 }
 629
 630 static void
 631 rte_service_dump_one(FILE *f, struct rte_service_spec_impl *s,
 632                      uint64_t all_cycles, uint32_t reset)
 633 {
 634         /* avoid divide by zero */
 635         if (all_cycles == 0)
 636                 all_cycles = 1;
 637
 638         int calls = 1;
 639         if (s->calls != 0)
 640                 calls = s->calls;
 641
 642         fprintf(f, "  %s: stats %d\tcalls %"PRIu64"\tcycles %"
 643                         PRIu64"\tavg: %"PRIu64"\n",
 644                         s->spec.name, service_stats_enabled(s), s->calls,
 645                         s->cycles_spent, s->cycles_spent / calls);
 646
 647         if (reset) {
 648                 s->cycles_spent = 0;
 649                 s->calls = 0;
 650         }
 651 }
 652
 653 static void
 654 service_dump_calls_per_lcore(FILE *f, uint32_t lcore, uint32_t reset)
 655 {
 656         uint32_t i;
 657         struct core_state *cs = &lcore_states[lcore];
 658
 659         fprintf(f, "%02d\t", lcore);
 660         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 661                 if (!service_valid(i))
 662                         continue;
 663                 fprintf(f, "%"PRIu64"\t", cs->calls_per_service[i]);
 664                 if (reset)
 665                         cs->calls_per_service[i] = 0;
 666         }
 667         fprintf(f, "\n");
 668 }
 669
 670 int32_t rte_service_dump(FILE *f, struct rte_service_spec *service)
 671 {
 672         uint32_t i;
 673
 674         uint64_t total_cycles = 0;
 675         for (i = 0; i < rte_service_count; i++) {
 676                 if (!service_valid(i))
 677                         continue;
 678                 total_cycles += rte_services[i].cycles_spent;
 679         }
 680
 681         if (service) {
 682                 struct rte_service_spec_impl *s =
 683                         (struct rte_service_spec_impl *)service;
 684                 fprintf(f, "Service %s Summary\n", s->spec.name);
 685                 uint32_t reset = 0;
 686                 rte_service_dump_one(f, s, total_cycles, reset);
 687                 return 0;
 688         }
 689
 690         fprintf(f, "Services Summary\n");
 691         for (i = 0; i < rte_service_count; i++) {
 692                 uint32_t reset = 1;
 693                 rte_service_dump_one(f, &rte_services[i], total_cycles, reset);
 694         }
 695
 696         fprintf(f, "Service Cores Summary\n");
 697         for (i = 0; i < RTE_MAX_LCORE; i++) {
 698                 if (lcore_config[i].core_role != ROLE_SERVICE)
 699                         continue;
 700
 701                 uint32_t reset = 0;
 702                 service_dump_calls_per_lcore(f, i, reset);
 703         }
 704
 705         return 0;
 706 }