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(struct rte_service_spec *service,
 170                                   int32_t enabled)
 171 {
 172         struct rte_service_spec_impl *impl =
 173                 (struct rte_service_spec_impl *)service;
 174         if (!impl)
 175                 return -EINVAL;
 176
 177         if (enabled)
 178                 impl->internal_flags |= SERVICE_F_STATS_ENABLED;
 179         else
 180                 impl->internal_flags &= ~(SERVICE_F_STATS_ENABLED);
 181
 182         return 0;
 183 }
 184
 185 uint32_t
 186 rte_service_get_count(void)
 187 {
 188         return rte_service_count;
 189 }
 190
 191 struct rte_service_spec *
 192 rte_service_get_by_id(uint32_t id)
 193 {
 194         struct rte_service_spec *service = NULL;
 195         if (id < rte_service_count)
 196                 service = (struct rte_service_spec *)&rte_services[id];
 197
 198         return service;
 199 }
 200
 201 struct rte_service_spec *rte_service_get_by_name(const char *name)
 202 {
 203         struct rte_service_spec *service = NULL;
 204         int i;
 205         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 206                 if (service_valid(i) &&
 207                                 strcmp(name, rte_services[i].spec.name) == 0) {
 208                         service = (struct rte_service_spec *)&rte_services[i];
 209                         break;
 210                 }
 211         }
 212
 213         return service;
 214 }
 215
 216 const char *
 217 rte_service_get_name(uint32_t id)
 218 {
 219         struct rte_service_spec_impl *s;
 220         SERVICE_VALID_GET_OR_ERR_RET(id, s, 0);
 221         return s->spec.name;
 222 }
 223
 224 int32_t
 225 rte_service_probe_capability(uint32_t id, uint32_t capability)
 226 {
 227         struct rte_service_spec_impl *s;
 228         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 229         return s->spec.capabilities & capability;
 230 }
 231
 232 int32_t
 233 rte_service_component_register(const struct rte_service_spec *spec,
 234                                uint32_t *id_ptr)
 235 {
 236         uint32_t i;
 237         int32_t free_slot = -1;
 238
 239         if (spec->callback == NULL || strlen(spec->name) == 0)
 240                 return -EINVAL;
 241
 242         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 243                 if (!service_valid(i)) {
 244                         free_slot = i;
 245                         break;
 246                 }
 247         }
 248
 249         if ((free_slot < 0) || (i == RTE_SERVICE_NUM_MAX))
 250                 return -ENOSPC;
 251
 252         struct rte_service_spec_impl *s = &rte_services[free_slot];
 253         s->spec = *spec;
 254         s->internal_flags |= SERVICE_F_REGISTERED;
 255
 256         rte_smp_wmb();
 257         rte_service_count++;
 258
 259         if (id_ptr)
 260                 *id_ptr = free_slot;
 261
 262         return 0;
 263 }
 264
 265 int32_t
 266 rte_service_unregister(struct rte_service_spec *spec)
 267 {
 268         struct rte_service_spec_impl *s = NULL;
 269         struct rte_service_spec_impl *spec_impl =
 270                 (struct rte_service_spec_impl *)spec;
 271
 272         uint32_t i;
 273         uint32_t service_id;
 274         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 275                 if (&rte_services[i] == spec_impl) {
 276                         s = spec_impl;
 277                         service_id = i;
 278                         break;
 279                 }
 280         }
 281
 282         if (!s)
 283                 return -EINVAL;
 284
 285         rte_service_count--;
 286         rte_smp_wmb();
 287
 288         s->internal_flags &= ~(SERVICE_F_REGISTERED);
 289
 290         for (i = 0; i < RTE_MAX_LCORE; i++)
 291                 lcore_states[i].service_mask &= ~(UINT64_C(1) << service_id);
 292
 293         memset(&rte_services[service_id], 0,
 294                         sizeof(struct rte_service_spec_impl));
 295
 296         return 0;
 297 }
 298
 299 int32_t
 300 rte_service_runstate_set(uint32_t id, uint32_t runstate)
 301 {
 302         struct rte_service_spec_impl *s;
 303         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 304
 305         if (runstate)
 306                 s->runstate = RUNSTATE_RUNNING;
 307         else
 308                 s->runstate = RUNSTATE_STOPPED;
 309
 310         rte_smp_wmb();
 311         return 0;
 312 }
 313
 314 int32_t
 315 rte_service_runstate_get(uint32_t id)
 316 {
 317         struct rte_service_spec_impl *s;
 318         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 319
 320         return (s->runstate == RUNSTATE_RUNNING) && (s->num_mapped_cores > 0);
 321 }
 322
 323 static int32_t
 324 rte_service_runner_func(void *arg)
 325 {
 326         RTE_SET_USED(arg);
 327         uint32_t i;
 328         const int lcore = rte_lcore_id();
 329         struct core_state *cs = &lcore_states[lcore];
 330
 331         while (lcore_states[lcore].runstate == RUNSTATE_RUNNING) {
 332                 const uint64_t service_mask = cs->service_mask;
 333                 for (i = 0; i < rte_service_count; i++) {
 334                         struct rte_service_spec_impl *s = &rte_services[i];
 335                         if (s->runstate != RUNSTATE_RUNNING ||
 336                                         !(service_mask & (UINT64_C(1) << i)))
 337                                 continue;
 338
 339                         /* check do we need cmpset, if MT safe or <= 1 core
 340                          * mapped, atomic ops are not required.
 341                          */
 342                         const int need_cmpset = !((service_mt_safe(s) == 0) &&
 343                                                 (s->num_mapped_cores > 1));
 344                         uint32_t *lock = (uint32_t *)&s->execute_lock;
 345
 346                         if (need_cmpset || rte_atomic32_cmpset(lock, 0, 1)) {
 347                                 void *userdata = s->spec.callback_userdata;
 348
 349                                 if (service_stats_enabled(s)) {
 350                                         uint64_t start = rte_rdtsc();
 351                                         s->spec.callback(userdata);
 352                                         uint64_t end = rte_rdtsc();
 353                                         s->cycles_spent += end - start;
 354                                         cs->calls_per_service[i]++;
 355                                         s->calls++;
 356                                 } else
 357                                         s->spec.callback(userdata);
 358
 359                                 if (need_cmpset)
 360                                         rte_atomic32_clear(&s->execute_lock);
 361                         }
 362                 }
 363
 364                 rte_smp_rmb();
 365         }
 366
 367         lcore_config[lcore].state = WAIT;
 368
 369         return 0;
 370 }
 371
 372 int32_t
 373 rte_service_lcore_count(void)
 374 {
 375         int32_t count = 0;
 376         uint32_t i;
 377         for (i = 0; i < RTE_MAX_LCORE; i++)
 378                 count += lcore_states[i].is_service_core;
 379         return count;
 380 }
 381
 382 int32_t
 383 rte_service_lcore_list(uint32_t array[], uint32_t n)
 384 {
 385         uint32_t count = rte_service_lcore_count();
 386         if (count > n)
 387                 return -ENOMEM;
 388
 389         if (!array)
 390                 return -EINVAL;
 391
 392         uint32_t i;
 393         uint32_t idx = 0;
 394         for (i = 0; i < RTE_MAX_LCORE; i++) {
 395                 struct core_state *cs = &lcore_states[i];
 396                 if (cs->is_service_core) {
 397                         array[idx] = i;
 398                         idx++;
 399                 }
 400         }
 401
 402         return count;
 403 }
 404
 405 int32_t
 406 rte_service_lcore_count_services(uint32_t lcore)
 407 {
 408         if (lcore >= RTE_MAX_LCORE)
 409                 return -EINVAL;
 410
 411         struct core_state *cs = &lcore_states[lcore];
 412         if (!cs->is_service_core)
 413                 return -ENOTSUP;
 414
 415         return __builtin_popcountll(cs->service_mask);
 416 }
 417
 418 int32_t
 419 rte_service_start_with_defaults(void)
 420 {
 421         /* create a default mapping from cores to services, then start the
 422          * services to make them transparent to unaware applications.
 423          */
 424         uint32_t i;
 425         int ret;
 426         uint32_t count = rte_service_get_count();
 427
 428         int32_t lcore_iter = 0;
 429         uint32_t ids[RTE_MAX_LCORE];
 430         int32_t lcore_count = rte_service_lcore_list(ids, RTE_MAX_LCORE);
 431
 432         if (lcore_count == 0)
 433                 return -ENOTSUP;
 434
 435         for (i = 0; (int)i < lcore_count; i++)
 436                 rte_service_lcore_start(ids[i]);
 437
 438         for (i = 0; i < count; i++) {
 439                 struct rte_service_spec *s = rte_service_get_by_id(i);
 440                 if (!s)
 441                         return -EINVAL;
 442
 443                 /* do 1:1 core mapping here, with each service getting
 444                  * assigned a single core by default. Adding multiple services
 445                  * should multiplex to a single core, or 1:1 if there are the
 446                  * same amount of services as service-cores
 447                  */
 448                 ret = rte_service_map_lcore_set(i, ids[lcore_iter], 1);
 449                 if (ret)
 450                         return -ENODEV;
 451
 452                 lcore_iter++;
 453                 if (lcore_iter >= lcore_count)
 454                         lcore_iter = 0;
 455
 456                 ret = rte_service_runstate_set(i, 1);
 457                 if (ret)
 458                         return -ENOEXEC;
 459         }
 460
 461         return 0;
 462 }
 463
 464 static int32_t
 465 service_update(struct rte_service_spec *service, uint32_t lcore,
 466                 uint32_t *set, uint32_t *enabled)
 467 {
 468         uint32_t i;
 469         int32_t sid = -1;
 470
 471         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 472                 if ((struct rte_service_spec *)&rte_services[i] == service &&
 473                                 service_valid(i)) {
 474                         sid = i;
 475                         break;
 476                 }
 477         }
 478
 479         if (sid == -1 || lcore >= RTE_MAX_LCORE)
 480                 return -EINVAL;
 481
 482         if (!lcore_states[lcore].is_service_core)
 483                 return -EINVAL;
 484
 485         uint64_t sid_mask = UINT64_C(1) << sid;
 486         if (set) {
 487                 if (*set) {
 488                         lcore_states[lcore].service_mask |= sid_mask;
 489                         rte_services[sid].num_mapped_cores++;
 490                 } else {
 491                         lcore_states[lcore].service_mask &= ~(sid_mask);
 492                         rte_services[sid].num_mapped_cores--;
 493                 }
 494         }
 495
 496         if (enabled)
 497                 *enabled = (lcore_states[lcore].service_mask & (sid_mask));
 498
 499         rte_smp_wmb();
 500
 501         return 0;
 502 }
 503
 504 int32_t
 505 rte_service_map_lcore_set(uint32_t id, uint32_t lcore, uint32_t enabled)
 506 {
 507         struct rte_service_spec_impl *s;
 508         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 509         uint32_t on = enabled > 0;
 510         return service_update(&s->spec, lcore, &on, 0);
 511 }
 512
 513 int32_t
 514 rte_service_map_lcore_get(uint32_t id, uint32_t lcore)
 515 {
 516         struct rte_service_spec_impl *s;
 517         SERVICE_VALID_GET_OR_ERR_RET(id, s, -EINVAL);
 518         uint32_t enabled;
 519         int ret = service_update(&s->spec, lcore, 0, &enabled);
 520         if (ret == 0)
 521                 return enabled;
 522         return ret;
 523 }
 524
 525 int32_t rte_service_lcore_reset_all(void)
 526 {
 527         /* loop over cores, reset all to mask 0 */
 528         uint32_t i;
 529         for (i = 0; i < RTE_MAX_LCORE; i++) {
 530                 lcore_states[i].service_mask = 0;
 531                 lcore_states[i].is_service_core = 0;
 532                 lcore_states[i].runstate = RUNSTATE_STOPPED;
 533         }
 534         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++)
 535                 rte_services[i].num_mapped_cores = 0;
 536
 537         rte_smp_wmb();
 538
 539         return 0;
 540 }
 541
 542 static void
 543 set_lcore_state(uint32_t lcore, int32_t state)
 544 {
 545         /* mark core state in hugepage backed config */
 546         struct rte_config *cfg = rte_eal_get_configuration();
 547         cfg->lcore_role[lcore] = state;
 548
 549         /* mark state in process local lcore_config */
 550         lcore_config[lcore].core_role = state;
 551
 552         /* update per-lcore optimized state tracking */
 553         lcore_states[lcore].is_service_core = (state == ROLE_SERVICE);
 554 }
 555
 556 int32_t
 557 rte_service_lcore_add(uint32_t lcore)
 558 {
 559         if (lcore >= RTE_MAX_LCORE)
 560                 return -EINVAL;
 561         if (lcore_states[lcore].is_service_core)
 562                 return -EALREADY;
 563
 564         set_lcore_state(lcore, ROLE_SERVICE);
 565
 566         /* ensure that after adding a core the mask and state are defaults */
 567         lcore_states[lcore].service_mask = 0;
 568         lcore_states[lcore].runstate = RUNSTATE_STOPPED;
 569
 570         rte_smp_wmb();
 571         return 0;
 572 }
 573
 574 int32_t
 575 rte_service_lcore_del(uint32_t lcore)
 576 {
 577         if (lcore >= RTE_MAX_LCORE)
 578                 return -EINVAL;
 579
 580         struct core_state *cs = &lcore_states[lcore];
 581         if (!cs->is_service_core)
 582                 return -EINVAL;
 583
 584         if (cs->runstate != RUNSTATE_STOPPED)
 585                 return -EBUSY;
 586
 587         set_lcore_state(lcore, ROLE_RTE);
 588
 589         rte_smp_wmb();
 590         return 0;
 591 }
 592
 593 int32_t
 594 rte_service_lcore_start(uint32_t lcore)
 595 {
 596         if (lcore >= RTE_MAX_LCORE)
 597                 return -EINVAL;
 598
 599         struct core_state *cs = &lcore_states[lcore];
 600         if (!cs->is_service_core)
 601                 return -EINVAL;
 602
 603         if (cs->runstate == RUNSTATE_RUNNING)
 604                 return -EALREADY;
 605
 606         /* set core to run state first, and then launch otherwise it will
 607          * return immediately as runstate keeps it in the service poll loop
 608          */
 609         lcore_states[lcore].runstate = RUNSTATE_RUNNING;
 610
 611         int ret = rte_eal_remote_launch(rte_service_runner_func, 0, lcore);
 612         /* returns -EBUSY if the core is already launched, 0 on success */
 613         return ret;
 614 }
 615
 616 int32_t
 617 rte_service_lcore_stop(uint32_t lcore)
 618 {
 619         if (lcore >= RTE_MAX_LCORE)
 620                 return -EINVAL;
 621
 622         if (lcore_states[lcore].runstate == RUNSTATE_STOPPED)
 623                 return -EALREADY;
 624
 625         uint32_t i;
 626         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 627                 int32_t enabled =
 628                         lcore_states[i].service_mask & (UINT64_C(1) << i);
 629                 int32_t service_running = rte_services[i].runstate !=
 630                                                 RUNSTATE_STOPPED;
 631                 int32_t only_core = rte_services[i].num_mapped_cores == 1;
 632
 633                 /* if the core is mapped, and the service is running, and this
 634                  * is the only core that is mapped, the service would cease to
 635                  * run if this core stopped, so fail instead.
 636                  */
 637                 if (enabled && service_running && only_core)
 638                         return -EBUSY;
 639         }
 640
 641         lcore_states[lcore].runstate = RUNSTATE_STOPPED;
 642
 643         return 0;
 644 }
 645
 646 static void
 647 rte_service_dump_one(FILE *f, struct rte_service_spec_impl *s,
 648                      uint64_t all_cycles, uint32_t reset)
 649 {
 650         /* avoid divide by zero */
 651         if (all_cycles == 0)
 652                 all_cycles = 1;
 653
 654         int calls = 1;
 655         if (s->calls != 0)
 656                 calls = s->calls;
 657
 658         fprintf(f, "  %s: stats %d\tcalls %"PRIu64"\tcycles %"
 659                         PRIu64"\tavg: %"PRIu64"\n",
 660                         s->spec.name, service_stats_enabled(s), s->calls,
 661                         s->cycles_spent, s->cycles_spent / calls);
 662
 663         if (reset) {
 664                 s->cycles_spent = 0;
 665                 s->calls = 0;
 666         }
 667 }
 668
 669 static void
 670 service_dump_calls_per_lcore(FILE *f, uint32_t lcore, uint32_t reset)
 671 {
 672         uint32_t i;
 673         struct core_state *cs = &lcore_states[lcore];
 674
 675         fprintf(f, "%02d\t", lcore);
 676         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 677                 if (!service_valid(i))
 678                         continue;
 679                 fprintf(f, "%"PRIu64"\t", cs->calls_per_service[i]);
 680                 if (reset)
 681                         cs->calls_per_service[i] = 0;
 682         }
 683         fprintf(f, "\n");
 684 }
 685
 686 int32_t rte_service_dump(FILE *f, struct rte_service_spec *service)
 687 {
 688         uint32_t i;
 689
 690         uint64_t total_cycles = 0;
 691         for (i = 0; i < rte_service_count; i++) {
 692                 if (!service_valid(i))
 693                         continue;
 694                 total_cycles += rte_services[i].cycles_spent;
 695         }
 696
 697         if (service) {
 698                 struct rte_service_spec_impl *s =
 699                         (struct rte_service_spec_impl *)service;
 700                 fprintf(f, "Service %s Summary\n", s->spec.name);
 701                 uint32_t reset = 0;
 702                 rte_service_dump_one(f, s, total_cycles, reset);
 703                 return 0;
 704         }
 705
 706         fprintf(f, "Services Summary\n");
 707         for (i = 0; i < rte_service_count; i++) {
 708                 uint32_t reset = 1;
 709                 rte_service_dump_one(f, &rte_services[i], total_cycles, reset);
 710         }
 711
 712         fprintf(f, "Service Cores Summary\n");
 713         for (i = 0; i < RTE_MAX_LCORE; i++) {
 714                 if (lcore_config[i].core_role != ROLE_SERVICE)
 715                         continue;
 716
 717                 uint32_t reset = 0;
 718                 service_dump_calls_per_lcore(f, i, reset);
 719         }
 720
 721         return 0;
 722 }