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 /* validate ID and retrieve service pointer, or return error value */
 148 #define SERVICE_VALID_GET_OR_ERR_RET(id, service, retval) do {          \
 149         if (id >= RTE_SERVICE_NUM_MAX || !service_valid(id))            \
 150                 return retval;                                          \
 151         service = &rte_services[id];                                    \
 152 } while (0)
 153
 154 /* returns 1 if statistics should be colleced for service
 155  * Returns 0 if statistics should not be collected for service
 156  */
 157 static inline int
 158 service_stats_enabled(struct rte_service_spec_impl *impl)
 159 {
 160         return !!(impl->internal_flags & SERVICE_F_STATS_ENABLED);
 161 }
 162
 163 static inline int
 164 service_mt_safe(struct rte_service_spec_impl *s)
 165 {
 166         return s->spec.capabilities & RTE_SERVICE_CAP_MT_SAFE;
 167 }
 168
 169 int32_t rte_service_set_stats_enable(uint32_t id, int32_t enabled)
 170 {
 171         struct rte_service_spec_impl *s;
 172         SERVICE_VALID_GET_OR_ERR_RET(id, s, 0);
 173
 174         if (enabled)
 175                 s->internal_flags |= SERVICE_F_STATS_ENABLED;
 176         else
 177                 s->internal_flags &= ~(SERVICE_F_STATS_ENABLED);
 178
 179         return 0;
 180 }
 181
 182 uint32_t
 183 rte_service_get_count(void)
 184 {
 185         return rte_service_count;
 186 }
 187
 188 int32_t rte_service_get_by_name(const char *name, uint32_t *service_id)
 189 {
 190         if (!service_id)
 191                 return -EINVAL;
 192
 193         int i;
 194         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 195                 if (service_valid(i) &&
 196                                 strcmp(name, rte_services[i].spec.name) == 0) {
 197                         *service_id = i;
 198                         return 0;
 199                 }
 200         }
 201
 202         return -ENODEV;
 203 }
 204
 205 const char *
 206 rte_service_get_name(uint32_t id)
 207 {
 208         struct rte_service_spec_impl *s;
 209         SERVICE_VALID_GET_OR_ERR_RET(id, s, 0);
 210         return s->spec.name;
 211 }
 212
 213 int32_t
 214 rte_service_probe_capability(uint32_t id, uint32_t capability)
 215 {
 216         struct rte_service_spec_impl *s;
 217         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 218         return s->spec.capabilities & capability;
 219 }
 220
 221 int32_t
 222 rte_service_component_register(const struct rte_service_spec *spec,
 223                                uint32_t *id_ptr)
 224 {
 225         uint32_t i;
 226         int32_t free_slot = -1;
 227
 228         if (spec->callback == NULL || strlen(spec->name) == 0)
 229                 return -EINVAL;
 230
 231         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 232                 if (!service_valid(i)) {
 233                         free_slot = i;
 234                         break;
 235                 }
 236         }
 237
 238         if ((free_slot < 0) || (i == RTE_SERVICE_NUM_MAX))
 239                 return -ENOSPC;
 240
 241         struct rte_service_spec_impl *s = &rte_services[free_slot];
 242         s->spec = *spec;
 243         s->internal_flags |= SERVICE_F_REGISTERED;
 244
 245         rte_smp_wmb();
 246         rte_service_count++;
 247
 248         if (id_ptr)
 249                 *id_ptr = free_slot;
 250
 251         return 0;
 252 }
 253
 254 int32_t
 255 rte_service_component_unregister(uint32_t id)
 256 {
 257         uint32_t i;
 258         struct rte_service_spec_impl *s;
 259         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 260
 261         rte_service_count--;
 262         rte_smp_wmb();
 263
 264         s->internal_flags &= ~(SERVICE_F_REGISTERED);
 265
 266         /* clear the run-bit in all cores */
 267         for (i = 0; i < RTE_MAX_LCORE; i++)
 268                 lcore_states[i].service_mask &= ~(UINT64_C(1) << id);
 269
 270         memset(&rte_services[id], 0, sizeof(struct rte_service_spec_impl));
 271
 272         return 0;
 273 }
 274
 275 int32_t
 276 rte_service_runstate_set(uint32_t id, uint32_t runstate)
 277 {
 278         struct rte_service_spec_impl *s;
 279         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 280
 281         if (runstate)
 282                 s->runstate = RUNSTATE_RUNNING;
 283         else
 284                 s->runstate = RUNSTATE_STOPPED;
 285
 286         rte_smp_wmb();
 287         return 0;
 288 }
 289
 290 int32_t
 291 rte_service_runstate_get(uint32_t id)
 292 {
 293         struct rte_service_spec_impl *s;
 294         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 295
 296         return (s->runstate == RUNSTATE_RUNNING) && (s->num_mapped_cores > 0);
 297 }
 298
 299 static int32_t
 300 rte_service_runner_func(void *arg)
 301 {
 302         RTE_SET_USED(arg);
 303         uint32_t i;
 304         const int lcore = rte_lcore_id();
 305         struct core_state *cs = &lcore_states[lcore];
 306
 307         while (lcore_states[lcore].runstate == RUNSTATE_RUNNING) {
 308                 const uint64_t service_mask = cs->service_mask;
 309                 for (i = 0; i < rte_service_count; i++) {
 310                         struct rte_service_spec_impl *s = &rte_services[i];
 311                         if (s->runstate != RUNSTATE_RUNNING ||
 312                                         !(service_mask & (UINT64_C(1) << i)))
 313                                 continue;
 314
 315                         /* check do we need cmpset, if MT safe or <= 1 core
 316                          * mapped, atomic ops are not required.
 317                          */
 318                         const int need_cmpset = !((service_mt_safe(s) == 0) &&
 319                                                 (s->num_mapped_cores > 1));
 320                         uint32_t *lock = (uint32_t *)&s->execute_lock;
 321
 322                         if (need_cmpset || rte_atomic32_cmpset(lock, 0, 1)) {
 323                                 void *userdata = s->spec.callback_userdata;
 324
 325                                 if (service_stats_enabled(s)) {
 326                                         uint64_t start = rte_rdtsc();
 327                                         s->spec.callback(userdata);
 328                                         uint64_t end = rte_rdtsc();
 329                                         s->cycles_spent += end - start;
 330                                         cs->calls_per_service[i]++;
 331                                         s->calls++;
 332                                 } else
 333                                         s->spec.callback(userdata);
 334
 335                                 if (need_cmpset)
 336                                         rte_atomic32_clear(&s->execute_lock);
 337                         }
 338                 }
 339
 340                 rte_smp_rmb();
 341         }
 342
 343         lcore_config[lcore].state = WAIT;
 344
 345         return 0;
 346 }
 347
 348 int32_t
 349 rte_service_lcore_count(void)
 350 {
 351         int32_t count = 0;
 352         uint32_t i;
 353         for (i = 0; i < RTE_MAX_LCORE; i++)
 354                 count += lcore_states[i].is_service_core;
 355         return count;
 356 }
 357
 358 int32_t
 359 rte_service_lcore_list(uint32_t array[], uint32_t n)
 360 {
 361         uint32_t count = rte_service_lcore_count();
 362         if (count > n)
 363                 return -ENOMEM;
 364
 365         if (!array)
 366                 return -EINVAL;
 367
 368         uint32_t i;
 369         uint32_t idx = 0;
 370         for (i = 0; i < RTE_MAX_LCORE; i++) {
 371                 struct core_state *cs = &lcore_states[i];
 372                 if (cs->is_service_core) {
 373                         array[idx] = i;
 374                         idx++;
 375                 }
 376         }
 377
 378         return count;
 379 }
 380
 381 int32_t
 382 rte_service_lcore_count_services(uint32_t lcore)
 383 {
 384         if (lcore >= RTE_MAX_LCORE)
 385                 return -EINVAL;
 386
 387         struct core_state *cs = &lcore_states[lcore];
 388         if (!cs->is_service_core)
 389                 return -ENOTSUP;
 390
 391         return __builtin_popcountll(cs->service_mask);
 392 }
 393
 394 int32_t
 395 rte_service_start_with_defaults(void)
 396 {
 397         /* create a default mapping from cores to services, then start the
 398          * services to make them transparent to unaware applications.
 399          */
 400         uint32_t i;
 401         int ret;
 402         uint32_t count = rte_service_get_count();
 403
 404         int32_t lcore_iter = 0;
 405         uint32_t ids[RTE_MAX_LCORE];
 406         int32_t lcore_count = rte_service_lcore_list(ids, RTE_MAX_LCORE);
 407
 408         if (lcore_count == 0)
 409                 return -ENOTSUP;
 410
 411         for (i = 0; (int)i < lcore_count; i++)
 412                 rte_service_lcore_start(ids[i]);
 413
 414         for (i = 0; i < count; i++) {
 415                 /* do 1:1 core mapping here, with each service getting
 416                  * assigned a single core by default. Adding multiple services
 417                  * should multiplex to a single core, or 1:1 if there are the
 418                  * same amount of services as service-cores
 419                  */
 420                 ret = rte_service_map_lcore_set(i, ids[lcore_iter], 1);
 421                 if (ret)
 422                         return -ENODEV;
 423
 424                 lcore_iter++;
 425                 if (lcore_iter >= lcore_count)
 426                         lcore_iter = 0;
 427
 428                 ret = rte_service_runstate_set(i, 1);
 429                 if (ret)
 430                         return -ENOEXEC;
 431         }
 432
 433         return 0;
 434 }
 435
 436 static int32_t
 437 service_update(struct rte_service_spec *service, uint32_t lcore,
 438                 uint32_t *set, uint32_t *enabled)
 439 {
 440         uint32_t i;
 441         int32_t sid = -1;
 442
 443         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 444                 if ((struct rte_service_spec *)&rte_services[i] == service &&
 445                                 service_valid(i)) {
 446                         sid = i;
 447                         break;
 448                 }
 449         }
 450
 451         if (sid == -1 || lcore >= RTE_MAX_LCORE)
 452                 return -EINVAL;
 453
 454         if (!lcore_states[lcore].is_service_core)
 455                 return -EINVAL;
 456
 457         uint64_t sid_mask = UINT64_C(1) << sid;
 458         if (set) {
 459                 if (*set) {
 460                         lcore_states[lcore].service_mask |= sid_mask;
 461                         rte_services[sid].num_mapped_cores++;
 462                 } else {
 463                         lcore_states[lcore].service_mask &= ~(sid_mask);
 464                         rte_services[sid].num_mapped_cores--;
 465                 }
 466         }
 467
 468         if (enabled)
 469                 *enabled = (lcore_states[lcore].service_mask & (sid_mask));
 470
 471         rte_smp_wmb();
 472
 473         return 0;
 474 }
 475
 476 int32_t
 477 rte_service_map_lcore_set(uint32_t id, uint32_t lcore, uint32_t enabled)
 478 {
 479         struct rte_service_spec_impl *s;
 480         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 481         uint32_t on = enabled > 0;
 482         return service_update(&s->spec, lcore, &on, 0);
 483 }
 484
 485 int32_t
 486 rte_service_map_lcore_get(uint32_t id, uint32_t lcore)
 487 {
 488         struct rte_service_spec_impl *s;
 489         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 490         uint32_t enabled;
 491         int ret = service_update(&s->spec, lcore, 0, &enabled);
 492         if (ret == 0)
 493                 return enabled;
 494         return ret;
 495 }
 496
 497 int32_t rte_service_lcore_reset_all(void)
 498 {
 499         /* loop over cores, reset all to mask 0 */
 500         uint32_t i;
 501         for (i = 0; i < RTE_MAX_LCORE; i++) {
 502                 lcore_states[i].service_mask = 0;
 503                 lcore_states[i].is_service_core = 0;
 504                 lcore_states[i].runstate = RUNSTATE_STOPPED;
 505         }
 506         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++)
 507                 rte_services[i].num_mapped_cores = 0;
 508
 509         rte_smp_wmb();
 510
 511         return 0;
 512 }
 513
 514 static void
 515 set_lcore_state(uint32_t lcore, int32_t state)
 516 {
 517         /* mark core state in hugepage backed config */
 518         struct rte_config *cfg = rte_eal_get_configuration();
 519         cfg->lcore_role[lcore] = state;
 520
 521         /* mark state in process local lcore_config */
 522         lcore_config[lcore].core_role = state;
 523
 524         /* update per-lcore optimized state tracking */
 525         lcore_states[lcore].is_service_core = (state == ROLE_SERVICE);
 526 }
 527
 528 int32_t
 529 rte_service_lcore_add(uint32_t lcore)
 530 {
 531         if (lcore >= RTE_MAX_LCORE)
 532                 return -EINVAL;
 533         if (lcore_states[lcore].is_service_core)
 534                 return -EALREADY;
 535
 536         set_lcore_state(lcore, ROLE_SERVICE);
 537
 538         /* ensure that after adding a core the mask and state are defaults */
 539         lcore_states[lcore].service_mask = 0;
 540         lcore_states[lcore].runstate = RUNSTATE_STOPPED;
 541
 542         rte_smp_wmb();
 543         return 0;
 544 }
 545
 546 int32_t
 547 rte_service_lcore_del(uint32_t lcore)
 548 {
 549         if (lcore >= RTE_MAX_LCORE)
 550                 return -EINVAL;
 551
 552         struct core_state *cs = &lcore_states[lcore];
 553         if (!cs->is_service_core)
 554                 return -EINVAL;
 555
 556         if (cs->runstate != RUNSTATE_STOPPED)
 557                 return -EBUSY;
 558
 559         set_lcore_state(lcore, ROLE_RTE);
 560
 561         rte_smp_wmb();
 562         return 0;
 563 }
 564
 565 int32_t
 566 rte_service_lcore_start(uint32_t lcore)
 567 {
 568         if (lcore >= RTE_MAX_LCORE)
 569                 return -EINVAL;
 570
 571         struct core_state *cs = &lcore_states[lcore];
 572         if (!cs->is_service_core)
 573                 return -EINVAL;
 574
 575         if (cs->runstate == RUNSTATE_RUNNING)
 576                 return -EALREADY;
 577
 578         /* set core to run state first, and then launch otherwise it will
 579          * return immediately as runstate keeps it in the service poll loop
 580          */
 581         lcore_states[lcore].runstate = RUNSTATE_RUNNING;
 582
 583         int ret = rte_eal_remote_launch(rte_service_runner_func, 0, lcore);
 584         /* returns -EBUSY if the core is already launched, 0 on success */
 585         return ret;
 586 }
 587
 588 int32_t
 589 rte_service_lcore_stop(uint32_t lcore)
 590 {
 591         if (lcore >= RTE_MAX_LCORE)
 592                 return -EINVAL;
 593
 594         if (lcore_states[lcore].runstate == RUNSTATE_STOPPED)
 595                 return -EALREADY;
 596
 597         uint32_t i;
 598         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 599                 int32_t enabled =
 600                         lcore_states[i].service_mask & (UINT64_C(1) << i);
 601                 int32_t service_running = rte_services[i].runstate !=
 602                                                 RUNSTATE_STOPPED;
 603                 int32_t only_core = rte_services[i].num_mapped_cores == 1;
 604
 605                 /* if the core is mapped, and the service is running, and this
 606                  * is the only core that is mapped, the service would cease to
 607                  * run if this core stopped, so fail instead.
 608                  */
 609                 if (enabled && service_running && only_core)
 610                         return -EBUSY;
 611         }
 612
 613         lcore_states[lcore].runstate = RUNSTATE_STOPPED;
 614
 615         return 0;
 616 }
 617
 618 static void
 619 rte_service_dump_one(FILE *f, struct rte_service_spec_impl *s,
 620                      uint64_t all_cycles, uint32_t reset)
 621 {
 622         /* avoid divide by zero */
 623         if (all_cycles == 0)
 624                 all_cycles = 1;
 625
 626         int calls = 1;
 627         if (s->calls != 0)
 628                 calls = s->calls;
 629
 630         fprintf(f, "  %s: stats %d\tcalls %"PRIu64"\tcycles %"
 631                         PRIu64"\tavg: %"PRIu64"\n",
 632                         s->spec.name, service_stats_enabled(s), s->calls,
 633                         s->cycles_spent, s->cycles_spent / calls);
 634
 635         if (reset) {
 636                 s->cycles_spent = 0;
 637                 s->calls = 0;
 638         }
 639 }
 640
 641 static void
 642 service_dump_calls_per_lcore(FILE *f, uint32_t lcore, uint32_t reset)
 643 {
 644         uint32_t i;
 645         struct core_state *cs = &lcore_states[lcore];
 646
 647         fprintf(f, "%02d\t", lcore);
 648         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 649                 if (!service_valid(i))
 650                         continue;
 651                 fprintf(f, "%"PRIu64"\t", cs->calls_per_service[i]);
 652                 if (reset)
 653                         cs->calls_per_service[i] = 0;
 654         }
 655         fprintf(f, "\n");
 656 }
 657
 658 int32_t rte_service_dump(FILE *f, uint32_t id)
 659 {
 660         uint32_t i;
 661         int print_one = (id != UINT32_MAX);
 662
 663         uint64_t total_cycles = 0;
 664         for (i = 0; i < rte_service_count; i++) {
 665                 if (!service_valid(i))
 666                         continue;
 667                 total_cycles += rte_services[i].cycles_spent;
 668         }
 669
 670         /* print only the specified service */
 671         if (print_one) {
 672                 struct rte_service_spec_impl *s;
 673                 SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 674                 fprintf(f, "Service %s Summary\n", s->spec.name);
 675                 uint32_t reset = 0;
 676                 rte_service_dump_one(f, s, total_cycles, reset);
 677                 return 0;
 678         }
 679
 680         /* print all services, as UINT32_MAX was passed as id */
 681         fprintf(f, "Services Summary\n");
 682         for (i = 0; i < rte_service_count; i++) {
 683                 uint32_t reset = 1;
 684                 rte_service_dump_one(f, &rte_services[i], total_cycles, reset);
 685         }
 686
 687         fprintf(f, "Service Cores Summary\n");
 688         for (i = 0; i < RTE_MAX_LCORE; i++) {
 689                 if (lcore_config[i].core_role != ROLE_SERVICE)
 690                         continue;
 691
 692                 uint32_t reset = 0;
 693                 service_dump_calls_per_lcore(f, i, reset);
 694         }
 695
 696         return 0;
 697 }