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_is_running(const struct rte_service_spec *spec)
 234 {
 235         const struct rte_service_spec_impl *impl =
 236                 (const struct rte_service_spec_impl *)spec;
 237         if (!impl)
 238                 return -EINVAL;
 239
 240         return (impl->runstate == RUNSTATE_RUNNING) &&
 241                 (impl->num_mapped_cores > 0);
 242 }
 243
 244 int32_t
 245 rte_service_register(const struct rte_service_spec *spec)
 246 {
 247         uint32_t i;
 248         int32_t free_slot = -1;
 249
 250         if (spec->callback == NULL || strlen(spec->name) == 0)
 251                 return -EINVAL;
 252
 253         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 254                 if (!service_valid(i)) {
 255                         free_slot = i;
 256                         break;
 257                 }
 258         }
 259
 260         if ((free_slot < 0) || (i == RTE_SERVICE_NUM_MAX))
 261                 return -ENOSPC;
 262
 263         struct rte_service_spec_impl *s = &rte_services[free_slot];
 264         s->spec = *spec;
 265         s->internal_flags |= SERVICE_F_REGISTERED;
 266
 267         rte_smp_wmb();
 268         rte_service_count++;
 269
 270         return 0;
 271 }
 272
 273 int32_t
 274 rte_service_unregister(struct rte_service_spec *spec)
 275 {
 276         struct rte_service_spec_impl *s = NULL;
 277         struct rte_service_spec_impl *spec_impl =
 278                 (struct rte_service_spec_impl *)spec;
 279
 280         uint32_t i;
 281         uint32_t service_id;
 282         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 283                 if (&rte_services[i] == spec_impl) {
 284                         s = spec_impl;
 285                         service_id = i;
 286                         break;
 287                 }
 288         }
 289
 290         if (!s)
 291                 return -EINVAL;
 292
 293         rte_service_count--;
 294         rte_smp_wmb();
 295
 296         s->internal_flags &= ~(SERVICE_F_REGISTERED);
 297
 298         for (i = 0; i < RTE_MAX_LCORE; i++)
 299                 lcore_states[i].service_mask &= ~(UINT64_C(1) << service_id);
 300
 301         memset(&rte_services[service_id], 0,
 302                         sizeof(struct rte_service_spec_impl));
 303
 304         return 0;
 305 }
 306
 307 int32_t
 308 rte_service_start(struct rte_service_spec *service)
 309 {
 310         struct rte_service_spec_impl *s =
 311                 (struct rte_service_spec_impl *)service;
 312         s->runstate = RUNSTATE_RUNNING;
 313         rte_smp_wmb();
 314         return 0;
 315 }
 316
 317 int32_t
 318 rte_service_stop(struct rte_service_spec *service)
 319 {
 320         struct rte_service_spec_impl *s =
 321                 (struct rte_service_spec_impl *)service;
 322         s->runstate = RUNSTATE_STOPPED;
 323         rte_smp_wmb();
 324         return 0;
 325 }
 326
 327 static int32_t
 328 rte_service_runner_func(void *arg)
 329 {
 330         RTE_SET_USED(arg);
 331         uint32_t i;
 332         const int lcore = rte_lcore_id();
 333         struct core_state *cs = &lcore_states[lcore];
 334
 335         while (lcore_states[lcore].runstate == RUNSTATE_RUNNING) {
 336                 const uint64_t service_mask = cs->service_mask;
 337                 for (i = 0; i < rte_service_count; i++) {
 338                         struct rte_service_spec_impl *s = &rte_services[i];
 339                         if (s->runstate != RUNSTATE_RUNNING ||
 340                                         !(service_mask & (UINT64_C(1) << i)))
 341                                 continue;
 342
 343                         /* check do we need cmpset, if MT safe or <= 1 core
 344                          * mapped, atomic ops are not required.
 345                          */
 346                         const int need_cmpset = !((service_mt_safe(s) == 0) &&
 347                                                 (s->num_mapped_cores > 1));
 348                         uint32_t *lock = (uint32_t *)&s->execute_lock;
 349
 350                         if (need_cmpset || rte_atomic32_cmpset(lock, 0, 1)) {
 351                                 void *userdata = s->spec.callback_userdata;
 352
 353                                 if (service_stats_enabled(s)) {
 354                                         uint64_t start = rte_rdtsc();
 355                                         s->spec.callback(userdata);
 356                                         uint64_t end = rte_rdtsc();
 357                                         s->cycles_spent += end - start;
 358                                         cs->calls_per_service[i]++;
 359                                         s->calls++;
 360                                 } else
 361                                         s->spec.callback(userdata);
 362
 363                                 if (need_cmpset)
 364                                         rte_atomic32_clear(&s->execute_lock);
 365                         }
 366                 }
 367
 368                 rte_smp_rmb();
 369         }
 370
 371         lcore_config[lcore].state = WAIT;
 372
 373         return 0;
 374 }
 375
 376 int32_t
 377 rte_service_lcore_count(void)
 378 {
 379         int32_t count = 0;
 380         uint32_t i;
 381         for (i = 0; i < RTE_MAX_LCORE; i++)
 382                 count += lcore_states[i].is_service_core;
 383         return count;
 384 }
 385
 386 int32_t
 387 rte_service_lcore_list(uint32_t array[], uint32_t n)
 388 {
 389         uint32_t count = rte_service_lcore_count();
 390         if (count > n)
 391                 return -ENOMEM;
 392
 393         if (!array)
 394                 return -EINVAL;
 395
 396         uint32_t i;
 397         uint32_t idx = 0;
 398         for (i = 0; i < RTE_MAX_LCORE; i++) {
 399                 struct core_state *cs = &lcore_states[i];
 400                 if (cs->is_service_core) {
 401                         array[idx] = i;
 402                         idx++;
 403                 }
 404         }
 405
 406         return count;
 407 }
 408
 409 int32_t
 410 rte_service_lcore_count_services(uint32_t lcore)
 411 {
 412         if (lcore >= RTE_MAX_LCORE)
 413                 return -EINVAL;
 414
 415         struct core_state *cs = &lcore_states[lcore];
 416         if (!cs->is_service_core)
 417                 return -ENOTSUP;
 418
 419         return __builtin_popcountll(cs->service_mask);
 420 }
 421
 422 int32_t
 423 rte_service_start_with_defaults(void)
 424 {
 425         /* create a default mapping from cores to services, then start the
 426          * services to make them transparent to unaware applications.
 427          */
 428         uint32_t i;
 429         int ret;
 430         uint32_t count = rte_service_get_count();
 431
 432         int32_t lcore_iter = 0;
 433         uint32_t ids[RTE_MAX_LCORE];
 434         int32_t lcore_count = rte_service_lcore_list(ids, RTE_MAX_LCORE);
 435
 436         if (lcore_count == 0)
 437                 return -ENOTSUP;
 438
 439         for (i = 0; (int)i < lcore_count; i++)
 440                 rte_service_lcore_start(ids[i]);
 441
 442         for (i = 0; i < count; i++) {
 443                 struct rte_service_spec *s = rte_service_get_by_id(i);
 444                 if (!s)
 445                         return -EINVAL;
 446
 447                 /* do 1:1 core mapping here, with each service getting
 448                  * assigned a single core by default. Adding multiple services
 449                  * should multiplex to a single core, or 1:1 if there are the
 450                  * same amount of services as service-cores
 451                  */
 452                 ret = rte_service_enable_on_lcore(s, ids[lcore_iter]);
 453                 if (ret)
 454                         return -ENODEV;
 455
 456                 lcore_iter++;
 457                 if (lcore_iter >= lcore_count)
 458                         lcore_iter = 0;
 459
 460                 ret = rte_service_start(s);
 461                 if (ret)
 462                         return -ENOEXEC;
 463         }
 464
 465         return 0;
 466 }
 467
 468 static int32_t
 469 service_update(struct rte_service_spec *service, uint32_t lcore,
 470                 uint32_t *set, uint32_t *enabled)
 471 {
 472         uint32_t i;
 473         int32_t sid = -1;
 474
 475         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 476                 if ((struct rte_service_spec *)&rte_services[i] == service &&
 477                                 service_valid(i)) {
 478                         sid = i;
 479                         break;
 480                 }
 481         }
 482
 483         if (sid == -1 || lcore >= RTE_MAX_LCORE)
 484                 return -EINVAL;
 485
 486         if (!lcore_states[lcore].is_service_core)
 487                 return -EINVAL;
 488
 489         uint64_t sid_mask = UINT64_C(1) << sid;
 490         if (set) {
 491                 if (*set) {
 492                         lcore_states[lcore].service_mask |= sid_mask;
 493                         rte_services[sid].num_mapped_cores++;
 494                 } else {
 495                         lcore_states[lcore].service_mask &= ~(sid_mask);
 496                         rte_services[sid].num_mapped_cores--;
 497                 }
 498         }
 499
 500         if (enabled)
 501                 *enabled = (lcore_states[lcore].service_mask & (sid_mask));
 502
 503         rte_smp_wmb();
 504
 505         return 0;
 506 }
 507
 508 int32_t rte_service_get_enabled_on_lcore(struct rte_service_spec *service,
 509                                         uint32_t lcore)
 510 {
 511         uint32_t enabled;
 512         int ret = service_update(service, lcore, 0, &enabled);
 513         if (ret == 0)
 514                 return enabled;
 515         return -EINVAL;
 516 }
 517
 518 int32_t
 519 rte_service_enable_on_lcore(struct rte_service_spec *service, uint32_t lcore)
 520 {
 521         uint32_t on = 1;
 522         return service_update(service, lcore, &on, 0);
 523 }
 524
 525 int32_t
 526 rte_service_disable_on_lcore(struct rte_service_spec *service, uint32_t lcore)
 527 {
 528         uint32_t off = 0;
 529         return service_update(service, lcore, &off, 0);
 530 }
 531
 532 int32_t rte_service_lcore_reset_all(void)
 533 {
 534         /* loop over cores, reset all to mask 0 */
 535         uint32_t i;
 536         for (i = 0; i < RTE_MAX_LCORE; i++) {
 537                 lcore_states[i].service_mask = 0;
 538                 lcore_states[i].is_service_core = 0;
 539                 lcore_states[i].runstate = RUNSTATE_STOPPED;
 540         }
 541         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++)
 542                 rte_services[i].num_mapped_cores = 0;
 543
 544         rte_smp_wmb();
 545
 546         return 0;
 547 }
 548
 549 static void
 550 set_lcore_state(uint32_t lcore, int32_t state)
 551 {
 552         /* mark core state in hugepage backed config */
 553         struct rte_config *cfg = rte_eal_get_configuration();
 554         cfg->lcore_role[lcore] = state;
 555
 556         /* mark state in process local lcore_config */
 557         lcore_config[lcore].core_role = state;
 558
 559         /* update per-lcore optimized state tracking */
 560         lcore_states[lcore].is_service_core = (state == ROLE_SERVICE);
 561 }
 562
 563 int32_t
 564 rte_service_lcore_add(uint32_t lcore)
 565 {
 566         if (lcore >= RTE_MAX_LCORE)
 567                 return -EINVAL;
 568         if (lcore_states[lcore].is_service_core)
 569                 return -EALREADY;
 570
 571         set_lcore_state(lcore, ROLE_SERVICE);
 572
 573         /* ensure that after adding a core the mask and state are defaults */
 574         lcore_states[lcore].service_mask = 0;
 575         lcore_states[lcore].runstate = RUNSTATE_STOPPED;
 576
 577         rte_smp_wmb();
 578         return 0;
 579 }
 580
 581 int32_t
 582 rte_service_lcore_del(uint32_t lcore)
 583 {
 584         if (lcore >= RTE_MAX_LCORE)
 585                 return -EINVAL;
 586
 587         struct core_state *cs = &lcore_states[lcore];
 588         if (!cs->is_service_core)
 589                 return -EINVAL;
 590
 591         if (cs->runstate != RUNSTATE_STOPPED)
 592                 return -EBUSY;
 593
 594         set_lcore_state(lcore, ROLE_RTE);
 595
 596         rte_smp_wmb();
 597         return 0;
 598 }
 599
 600 int32_t
 601 rte_service_lcore_start(uint32_t lcore)
 602 {
 603         if (lcore >= RTE_MAX_LCORE)
 604                 return -EINVAL;
 605
 606         struct core_state *cs = &lcore_states[lcore];
 607         if (!cs->is_service_core)
 608                 return -EINVAL;
 609
 610         if (cs->runstate == RUNSTATE_RUNNING)
 611                 return -EALREADY;
 612
 613         /* set core to run state first, and then launch otherwise it will
 614          * return immediately as runstate keeps it in the service poll loop
 615          */
 616         lcore_states[lcore].runstate = RUNSTATE_RUNNING;
 617
 618         int ret = rte_eal_remote_launch(rte_service_runner_func, 0, lcore);
 619         /* returns -EBUSY if the core is already launched, 0 on success */
 620         return ret;
 621 }
 622
 623 int32_t
 624 rte_service_lcore_stop(uint32_t lcore)
 625 {
 626         if (lcore >= RTE_MAX_LCORE)
 627                 return -EINVAL;
 628
 629         if (lcore_states[lcore].runstate == RUNSTATE_STOPPED)
 630                 return -EALREADY;
 631
 632         uint32_t i;
 633         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 634                 int32_t enabled =
 635                         lcore_states[i].service_mask & (UINT64_C(1) << i);
 636                 int32_t service_running = rte_services[i].runstate !=
 637                                                 RUNSTATE_STOPPED;
 638                 int32_t only_core = rte_services[i].num_mapped_cores == 1;
 639
 640                 /* if the core is mapped, and the service is running, and this
 641                  * is the only core that is mapped, the service would cease to
 642                  * run if this core stopped, so fail instead.
 643                  */
 644                 if (enabled && service_running && only_core)
 645                         return -EBUSY;
 646         }
 647
 648         lcore_states[lcore].runstate = RUNSTATE_STOPPED;
 649
 650         return 0;
 651 }
 652
 653 static void
 654 rte_service_dump_one(FILE *f, struct rte_service_spec_impl *s,
 655                      uint64_t all_cycles, uint32_t reset)
 656 {
 657         /* avoid divide by zero */
 658         if (all_cycles == 0)
 659                 all_cycles = 1;
 660
 661         int calls = 1;
 662         if (s->calls != 0)
 663                 calls = s->calls;
 664
 665         fprintf(f, "  %s: stats %d\tcalls %"PRIu64"\tcycles %"
 666                         PRIu64"\tavg: %"PRIu64"\n",
 667                         s->spec.name, service_stats_enabled(s), s->calls,
 668                         s->cycles_spent, s->cycles_spent / calls);
 669
 670         if (reset) {
 671                 s->cycles_spent = 0;
 672                 s->calls = 0;
 673         }
 674 }
 675
 676 static void
 677 service_dump_calls_per_lcore(FILE *f, uint32_t lcore, uint32_t reset)
 678 {
 679         uint32_t i;
 680         struct core_state *cs = &lcore_states[lcore];
 681
 682         fprintf(f, "%02d\t", lcore);
 683         for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
 684                 if (!service_valid(i))
 685                         continue;
 686                 fprintf(f, "%"PRIu64"\t", cs->calls_per_service[i]);
 687                 if (reset)
 688                         cs->calls_per_service[i] = 0;
 689         }
 690         fprintf(f, "\n");
 691 }
 692
 693 int32_t rte_service_dump(FILE *f, struct rte_service_spec *service)
 694 {
 695         uint32_t i;
 696
 697         uint64_t total_cycles = 0;
 698         for (i = 0; i < rte_service_count; i++) {
 699                 if (!service_valid(i))
 700                         continue;
 701                 total_cycles += rte_services[i].cycles_spent;
 702         }
 703
 704         if (service) {
 705                 struct rte_service_spec_impl *s =
 706                         (struct rte_service_spec_impl *)service;
 707                 fprintf(f, "Service %s Summary\n", s->spec.name);
 708                 uint32_t reset = 0;
 709                 rte_service_dump_one(f, s, total_cycles, reset);
 710                 return 0;
 711         }
 712
 713         fprintf(f, "Services Summary\n");
 714         for (i = 0; i < rte_service_count; i++) {
 715                 uint32_t reset = 1;
 716                 rte_service_dump_one(f, &rte_services[i], total_cycles, reset);
 717         }
 718
 719         fprintf(f, "Service Cores Summary\n");
 720         for (i = 0; i < RTE_MAX_LCORE; i++) {
 721                 if (lcore_config[i].core_role != ROLE_SERVICE)
 722                         continue;
 723
 724                 uint32_t reset = 0;
 725                 service_dump_calls_per_lcore(f, i, reset);
 726         }
 727
 728         return 0;
 729 }