4 * Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
5 * Copyright(c) 2012-2014 6WIND S.A.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * * Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * * Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
18 * * Neither the name of Intel Corporation nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
26 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
28 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
50 #include <sys/queue.h>
52 #if defined(RTE_ARCH_X86)
56 #include <rte_common.h>
57 #include <rte_debug.h>
58 #include <rte_memory.h>
59 #include <rte_memzone.h>
60 #include <rte_launch.h>
62 #include <rte_eal_memconfig.h>
63 #include <rte_errno.h>
64 #include <rte_per_lcore.h>
65 #include <rte_lcore.h>
66 #include <rte_service_component.h>
68 #include <rte_random.h>
69 #include <rte_cycles.h>
70 #include <rte_string_fns.h>
71 #include <rte_cpuflags.h>
72 #include <rte_interrupts.h>
76 #include <rte_devargs.h>
77 #include <rte_version.h>
78 #include <rte_atomic.h>
79 #include <malloc_heap.h>
82 #include "eal_private.h"
83 #include "eal_thread.h"
84 #include "eal_internal_cfg.h"
85 #include "eal_filesystem.h"
86 #include "eal_hugepages.h"
87 #include "eal_options.h"
90 #define MEMSIZE_IF_NO_HUGE_PAGE (64ULL * 1024ULL * 1024ULL)
92 #define SOCKET_MEM_STRLEN (RTE_MAX_NUMA_NODES * 10)
94 /* Allow the application to print its usage message too if set */
95 static rte_usage_hook_t rte_application_usage_hook = NULL;
97 /* early configuration structure, when memory config is not mmapped */
98 static struct rte_mem_config early_mem_config;
100 /* define fd variable here, because file needs to be kept open for the
101 * duration of the program, as we hold a write lock on it in the primary proc */
102 static int mem_cfg_fd = -1;
104 static struct flock wr_lock = {
106 .l_whence = SEEK_SET,
107 .l_start = offsetof(struct rte_mem_config, memseg),
108 .l_len = sizeof(early_mem_config.memseg),
111 /* Address of global and public configuration */
112 static struct rte_config rte_config = {
113 .mem_config = &early_mem_config,
116 /* internal configuration (per-core) */
117 struct lcore_config lcore_config[RTE_MAX_LCORE];
119 /* internal configuration */
120 struct internal_config internal_config;
122 /* used by rte_rdtsc() */
123 int rte_cycles_vmware_tsc_map;
125 /* Return mbuf pool ops name */
127 rte_eal_mbuf_default_mempool_ops(void)
129 return internal_config.mbuf_pool_ops_name;
132 /* Return a pointer to the configuration structure */
134 rte_eal_get_configuration(void)
140 rte_eal_iova_mode(void)
142 return rte_eal_get_configuration()->iova_mode;
145 /* parse a sysfs (or other) file containing one integer value */
147 eal_parse_sysfs_value(const char *filename, unsigned long *val)
153 if ((f = fopen(filename, "r")) == NULL) {
154 RTE_LOG(ERR, EAL, "%s(): cannot open sysfs value %s\n",
159 if (fgets(buf, sizeof(buf), f) == NULL) {
160 RTE_LOG(ERR, EAL, "%s(): cannot read sysfs value %s\n",
165 *val = strtoul(buf, &end, 0);
166 if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
167 RTE_LOG(ERR, EAL, "%s(): cannot parse sysfs value %s\n",
177 /* create memory configuration in shared/mmap memory. Take out
178 * a write lock on the memsegs, so we can auto-detect primary/secondary.
179 * This means we never close the file while running (auto-close on exit).
180 * We also don't lock the whole file, so that in future we can use read-locks
181 * on other parts, e.g. memzones, to detect if there are running secondary
184 rte_eal_config_create(void)
186 void *rte_mem_cfg_addr;
189 const char *pathname = eal_runtime_config_path();
191 if (internal_config.no_shconf)
194 /* map the config before hugepage address so that we don't waste a page */
195 if (internal_config.base_virtaddr != 0)
196 rte_mem_cfg_addr = (void *)
197 RTE_ALIGN_FLOOR(internal_config.base_virtaddr -
198 sizeof(struct rte_mem_config), sysconf(_SC_PAGE_SIZE));
200 rte_mem_cfg_addr = NULL;
203 mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0660);
205 rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
208 retval = ftruncate(mem_cfg_fd, sizeof(*rte_config.mem_config));
211 rte_panic("Cannot resize '%s' for rte_mem_config\n", pathname);
214 retval = fcntl(mem_cfg_fd, F_SETLK, &wr_lock);
217 rte_exit(EXIT_FAILURE, "Cannot create lock on '%s'. Is another primary "
218 "process running?\n", pathname);
221 rte_mem_cfg_addr = mmap(rte_mem_cfg_addr, sizeof(*rte_config.mem_config),
222 PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);
224 if (rte_mem_cfg_addr == MAP_FAILED){
225 rte_panic("Cannot mmap memory for rte_config\n");
227 memcpy(rte_mem_cfg_addr, &early_mem_config, sizeof(early_mem_config));
228 rte_config.mem_config = rte_mem_cfg_addr;
230 /* store address of the config in the config itself so that secondary
231 * processes could later map the config into this exact location */
232 rte_config.mem_config->mem_cfg_addr = (uintptr_t) rte_mem_cfg_addr;
236 /* attach to an existing shared memory config */
238 rte_eal_config_attach(void)
240 struct rte_mem_config *mem_config;
242 const char *pathname = eal_runtime_config_path();
244 if (internal_config.no_shconf)
248 mem_cfg_fd = open(pathname, O_RDWR);
250 rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
253 /* map it as read-only first */
254 mem_config = (struct rte_mem_config *) mmap(NULL, sizeof(*mem_config),
255 PROT_READ, MAP_SHARED, mem_cfg_fd, 0);
256 if (mem_config == MAP_FAILED)
257 rte_panic("Cannot mmap memory for rte_config! error %i (%s)\n",
258 errno, strerror(errno));
260 rte_config.mem_config = mem_config;
263 /* reattach the shared config at exact memory location primary process has it */
265 rte_eal_config_reattach(void)
267 struct rte_mem_config *mem_config;
268 void *rte_mem_cfg_addr;
270 if (internal_config.no_shconf)
273 /* save the address primary process has mapped shared config to */
274 rte_mem_cfg_addr = (void *) (uintptr_t) rte_config.mem_config->mem_cfg_addr;
276 /* unmap original config */
277 munmap(rte_config.mem_config, sizeof(struct rte_mem_config));
279 /* remap the config at proper address */
280 mem_config = (struct rte_mem_config *) mmap(rte_mem_cfg_addr,
281 sizeof(*mem_config), PROT_READ | PROT_WRITE, MAP_SHARED,
283 if (mem_config == MAP_FAILED || mem_config != rte_mem_cfg_addr) {
284 if (mem_config != MAP_FAILED)
285 /* errno is stale, don't use */
286 rte_panic("Cannot mmap memory for rte_config at [%p], got [%p]"
287 " - please use '--base-virtaddr' option\n",
288 rte_mem_cfg_addr, mem_config);
290 rte_panic("Cannot mmap memory for rte_config! error %i (%s)\n",
291 errno, strerror(errno));
295 rte_config.mem_config = mem_config;
298 /* Detect if we are a primary or a secondary process */
300 eal_proc_type_detect(void)
302 enum rte_proc_type_t ptype = RTE_PROC_PRIMARY;
303 const char *pathname = eal_runtime_config_path();
305 /* if we can open the file but not get a write-lock we are a secondary
306 * process. NOTE: if we get a file handle back, we keep that open
307 * and don't close it to prevent a race condition between multiple opens */
308 if (((mem_cfg_fd = open(pathname, O_RDWR)) >= 0) &&
309 (fcntl(mem_cfg_fd, F_SETLK, &wr_lock) < 0))
310 ptype = RTE_PROC_SECONDARY;
312 RTE_LOG(INFO, EAL, "Auto-detected process type: %s\n",
313 ptype == RTE_PROC_PRIMARY ? "PRIMARY" : "SECONDARY");
318 /* Sets up rte_config structure with the pointer to shared memory config.*/
320 rte_config_init(void)
322 rte_config.process_type = internal_config.process_type;
324 switch (rte_config.process_type){
325 case RTE_PROC_PRIMARY:
326 rte_eal_config_create();
328 case RTE_PROC_SECONDARY:
329 rte_eal_config_attach();
330 rte_eal_mcfg_wait_complete(rte_config.mem_config);
331 rte_eal_config_reattach();
334 case RTE_PROC_INVALID:
335 rte_panic("Invalid process type\n");
339 /* Unlocks hugepage directories that were locked by eal_hugepage_info_init */
341 eal_hugedirs_unlock(void)
345 for (i = 0; i < MAX_HUGEPAGE_SIZES; i++)
347 /* skip uninitialized */
348 if (internal_config.hugepage_info[i].lock_descriptor < 0)
350 /* unlock hugepage file */
351 flock(internal_config.hugepage_info[i].lock_descriptor, LOCK_UN);
352 close(internal_config.hugepage_info[i].lock_descriptor);
353 /* reset the field */
354 internal_config.hugepage_info[i].lock_descriptor = -1;
360 eal_usage(const char *prgname)
362 printf("\nUsage: %s ", prgname);
364 printf("EAL Linux options:\n"
365 " --"OPT_SOCKET_MEM" Memory to allocate on sockets (comma separated values)\n"
366 " --"OPT_HUGE_DIR" Directory where hugetlbfs is mounted\n"
367 " --"OPT_FILE_PREFIX" Prefix for hugepage filenames\n"
368 " --"OPT_BASE_VIRTADDR" Base virtual address\n"
369 " --"OPT_CREATE_UIO_DEV" Create /dev/uioX (usually done by hotplug)\n"
370 " --"OPT_VFIO_INTR" Interrupt mode for VFIO (legacy|msi|msix)\n"
372 /* Allow the application to print its usage message too if hook is set */
373 if ( rte_application_usage_hook ) {
374 printf("===== Application Usage =====\n\n");
375 rte_application_usage_hook(prgname);
379 /* Set a per-application usage message */
381 rte_set_application_usage_hook( rte_usage_hook_t usage_func )
383 rte_usage_hook_t old_func;
385 /* Will be NULL on the first call to denote the last usage routine. */
386 old_func = rte_application_usage_hook;
387 rte_application_usage_hook = usage_func;
393 eal_parse_socket_mem(char *socket_mem)
395 char * arg[RTE_MAX_NUMA_NODES];
398 uint64_t total_mem = 0;
400 len = strnlen(socket_mem, SOCKET_MEM_STRLEN);
401 if (len == SOCKET_MEM_STRLEN) {
402 RTE_LOG(ERR, EAL, "--socket-mem is too long\n");
406 /* all other error cases will be caught later */
407 if (!isdigit(socket_mem[len-1]))
410 /* split the optarg into separate socket values */
411 arg_num = rte_strsplit(socket_mem, len,
412 arg, RTE_MAX_NUMA_NODES, ',');
414 /* if split failed, or 0 arguments */
418 internal_config.force_sockets = 1;
420 /* parse each defined socket option */
422 for (i = 0; i < arg_num; i++) {
424 internal_config.socket_mem[i] = strtoull(arg[i], &end, 10);
426 /* check for invalid input */
428 (arg[i][0] == '\0') || (end == NULL) || (*end != '\0'))
430 internal_config.socket_mem[i] *= 1024ULL;
431 internal_config.socket_mem[i] *= 1024ULL;
432 total_mem += internal_config.socket_mem[i];
435 /* check if we have a positive amount of total memory */
443 eal_parse_base_virtaddr(const char *arg)
449 addr = strtoull(arg, &end, 16);
451 /* check for errors */
452 if ((errno != 0) || (arg[0] == '\0') || end == NULL || (*end != '\0'))
455 /* make sure we don't exceed 32-bit boundary on 32-bit target */
457 if (addr >= UINTPTR_MAX)
461 /* align the addr on 16M boundary, 16MB is the minimum huge page
462 * size on IBM Power architecture. If the addr is aligned to 16MB,
463 * it can align to 2MB for x86. So this alignment can also be used
465 internal_config.base_virtaddr =
466 RTE_PTR_ALIGN_CEIL((uintptr_t)addr, (size_t)RTE_PGSIZE_16M);
472 eal_parse_vfio_intr(const char *mode)
477 enum rte_intr_mode value;
479 { "legacy", RTE_INTR_MODE_LEGACY },
480 { "msi", RTE_INTR_MODE_MSI },
481 { "msix", RTE_INTR_MODE_MSIX },
484 for (i = 0; i < RTE_DIM(map); i++) {
485 if (!strcmp(mode, map[i].name)) {
486 internal_config.vfio_intr_mode = map[i].value;
493 /* Parse the arguments for --log-level only */
495 eal_log_level_parse(int argc, char **argv)
500 const int old_optind = optind;
501 const int old_optopt = optopt;
502 char * const old_optarg = optarg;
507 while ((opt = getopt_long(argc, argvopt, eal_short_options,
508 eal_long_options, &option_index)) != EOF) {
512 /* getopt is not happy, stop right now */
516 ret = (opt == OPT_LOG_LEVEL_NUM) ?
517 eal_parse_common_option(opt, optarg, &internal_config) : 0;
519 /* common parser is not happy */
524 /* restore getopt lib */
530 /* Parse the argument given in the command line of the application */
532 eal_parse_args(int argc, char **argv)
537 char *prgname = argv[0];
538 const int old_optind = optind;
539 const int old_optopt = optopt;
540 char * const old_optarg = optarg;
545 while ((opt = getopt_long(argc, argvopt, eal_short_options,
546 eal_long_options, &option_index)) != EOF) {
548 /* getopt is not happy, stop right now */
555 ret = eal_parse_common_option(opt, optarg, &internal_config);
556 /* common parser is not happy */
562 /* common parser handled this option */
571 case OPT_HUGE_DIR_NUM:
572 internal_config.hugepage_dir = strdup(optarg);
575 case OPT_FILE_PREFIX_NUM:
576 internal_config.hugefile_prefix = strdup(optarg);
579 case OPT_SOCKET_MEM_NUM:
580 if (eal_parse_socket_mem(optarg) < 0) {
581 RTE_LOG(ERR, EAL, "invalid parameters for --"
582 OPT_SOCKET_MEM "\n");
589 case OPT_BASE_VIRTADDR_NUM:
590 if (eal_parse_base_virtaddr(optarg) < 0) {
591 RTE_LOG(ERR, EAL, "invalid parameter for --"
592 OPT_BASE_VIRTADDR "\n");
599 case OPT_VFIO_INTR_NUM:
600 if (eal_parse_vfio_intr(optarg) < 0) {
601 RTE_LOG(ERR, EAL, "invalid parameters for --"
609 case OPT_CREATE_UIO_DEV_NUM:
610 internal_config.create_uio_dev = 1;
613 case OPT_MBUF_POOL_OPS_NAME_NUM:
614 internal_config.mbuf_pool_ops_name = optarg;
618 if (opt < OPT_LONG_MIN_NUM && isprint(opt)) {
619 RTE_LOG(ERR, EAL, "Option %c is not supported "
621 } else if (opt >= OPT_LONG_MIN_NUM &&
622 opt < OPT_LONG_MAX_NUM) {
623 RTE_LOG(ERR, EAL, "Option %s is not supported "
625 eal_long_options[option_index].name);
627 RTE_LOG(ERR, EAL, "Option %d is not supported "
636 if (eal_adjust_config(&internal_config) != 0) {
642 if (eal_check_common_options(&internal_config) != 0) {
649 argv[optind-1] = prgname;
653 /* restore getopt lib */
662 eal_check_mem_on_local_socket(void)
664 const struct rte_memseg *ms;
667 socket_id = rte_lcore_to_socket_id(rte_config.master_lcore);
669 ms = rte_eal_get_physmem_layout();
671 for (i = 0; i < RTE_MAX_MEMSEG; i++)
672 if (ms[i].socket_id == socket_id &&
676 RTE_LOG(WARNING, EAL, "WARNING: Master core has no "
677 "memory on local socket!\n");
681 sync_func(__attribute__((unused)) void *arg)
687 rte_eal_mcfg_complete(void)
689 /* ALL shared mem_config related INIT DONE */
690 if (rte_config.process_type == RTE_PROC_PRIMARY)
691 rte_config.mem_config->magic = RTE_MAGIC;
695 * Request iopl privilege for all RPL, returns 0 on success
696 * iopl() call is mostly for the i386 architecture. For other architectures,
697 * return -1 to indicate IO privilege can't be changed in this way.
700 rte_eal_iopl_init(void)
702 #if defined(RTE_ARCH_X86)
710 static int rte_eal_vfio_setup(void)
712 int vfio_enabled = 0;
714 if (vfio_enable("vfio"))
716 vfio_enabled = vfio_is_enabled("vfio");
720 /* if we are primary process, create a thread to communicate with
721 * secondary processes. the thread will use a socket to wait for
722 * requests from secondary process to send open file descriptors,
723 * because VFIO does not allow multiple open descriptors on a group or
726 if (internal_config.process_type == RTE_PROC_PRIMARY &&
727 vfio_mp_sync_setup() < 0)
735 static void rte_eal_init_alert(const char *msg)
737 fprintf(stderr, "EAL: FATAL: %s\n", msg);
738 RTE_LOG(ERR, EAL, "%s\n", msg);
741 /* Launch threads, called at application init(). */
743 rte_eal_init(int argc, char **argv)
747 static rte_atomic32_t run_once = RTE_ATOMIC32_INIT(0);
749 char cpuset[RTE_CPU_AFFINITY_STR_LEN];
750 char thread_name[RTE_MAX_THREAD_NAME_LEN];
752 /* checks if the machine is adequate */
753 if (!rte_cpu_is_supported()) {
754 rte_eal_init_alert("unsupported cpu type.");
759 if (!rte_atomic32_test_and_set(&run_once)) {
760 rte_eal_init_alert("already called initialization.");
761 rte_errno = EALREADY;
765 logid = strrchr(argv[0], '/');
766 logid = strdup(logid ? logid + 1: argv[0]);
768 thread_id = pthread_self();
770 eal_reset_internal_config(&internal_config);
772 /* set log level as early as possible */
773 eal_log_level_parse(argc, argv);
775 if (rte_eal_cpu_init() < 0) {
776 rte_eal_init_alert("Cannot detect lcores.");
781 fctret = eal_parse_args(argc, argv);
783 rte_eal_init_alert("Invalid 'command line' arguments.");
785 rte_atomic32_clear(&run_once);
789 if (eal_plugins_init() < 0) {
790 rte_eal_init_alert("Cannot init plugins\n");
792 rte_atomic32_clear(&run_once);
796 if (eal_option_device_parse()) {
798 rte_atomic32_clear(&run_once);
802 if (rte_bus_scan()) {
803 rte_eal_init_alert("Cannot scan the buses for devices\n");
805 rte_atomic32_clear(&run_once);
809 /* autodetect the iova mapping mode (default is iova_pa) */
810 rte_eal_get_configuration()->iova_mode = rte_bus_get_iommu_class();
812 if (internal_config.no_hugetlbfs == 0 &&
813 internal_config.process_type != RTE_PROC_SECONDARY &&
814 eal_hugepage_info_init() < 0) {
815 rte_eal_init_alert("Cannot get hugepage information.");
817 rte_atomic32_clear(&run_once);
821 if (internal_config.memory == 0 && internal_config.force_sockets == 0) {
822 if (internal_config.no_hugetlbfs)
823 internal_config.memory = MEMSIZE_IF_NO_HUGE_PAGE;
826 if (internal_config.vmware_tsc_map == 1) {
827 #ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT
828 rte_cycles_vmware_tsc_map = 1;
829 RTE_LOG (DEBUG, EAL, "Using VMWARE TSC MAP, "
830 "you must have monitor_control.pseudo_perfctr = TRUE\n");
832 RTE_LOG (WARNING, EAL, "Ignoring --vmware-tsc-map because "
833 "RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT is not set\n");
837 rte_srand(rte_rdtsc());
841 if (rte_eal_log_init(logid, internal_config.syslog_facility) < 0) {
842 rte_eal_init_alert("Cannot init logging.");
844 rte_atomic32_clear(&run_once);
849 if (rte_eal_vfio_setup() < 0) {
850 rte_eal_init_alert("Cannot init VFIO\n");
852 rte_atomic32_clear(&run_once);
857 if (rte_eal_memory_init() < 0) {
858 rte_eal_init_alert("Cannot init memory\n");
863 /* the directories are locked during eal_hugepage_info_init */
864 eal_hugedirs_unlock();
866 if (rte_eal_memzone_init() < 0) {
867 rte_eal_init_alert("Cannot init memzone\n");
872 if (rte_eal_tailqs_init() < 0) {
873 rte_eal_init_alert("Cannot init tail queues for objects\n");
878 if (rte_eal_alarm_init() < 0) {
879 rte_eal_init_alert("Cannot init interrupt-handling thread\n");
880 /* rte_eal_alarm_init sets rte_errno on failure. */
884 if (rte_eal_timer_init() < 0) {
885 rte_eal_init_alert("Cannot init HPET or TSC timers\n");
890 eal_check_mem_on_local_socket();
892 eal_thread_init_master(rte_config.master_lcore);
894 ret = eal_thread_dump_affinity(cpuset, RTE_CPU_AFFINITY_STR_LEN);
896 RTE_LOG(DEBUG, EAL, "Master lcore %u is ready (tid=%x;cpuset=[%s%s])\n",
897 rte_config.master_lcore, (int)thread_id, cpuset,
898 ret == 0 ? "" : "...");
900 if (rte_eal_intr_init() < 0) {
901 rte_eal_init_alert("Cannot init interrupt-handling thread\n");
905 RTE_LCORE_FOREACH_SLAVE(i) {
908 * create communication pipes between master thread
911 if (pipe(lcore_config[i].pipe_master2slave) < 0)
912 rte_panic("Cannot create pipe\n");
913 if (pipe(lcore_config[i].pipe_slave2master) < 0)
914 rte_panic("Cannot create pipe\n");
916 lcore_config[i].state = WAIT;
918 /* create a thread for each lcore */
919 ret = pthread_create(&lcore_config[i].thread_id, NULL,
920 eal_thread_loop, NULL);
922 rte_panic("Cannot create thread\n");
924 /* Set thread_name for aid in debugging. */
925 snprintf(thread_name, RTE_MAX_THREAD_NAME_LEN,
926 "lcore-slave-%d", i);
927 ret = rte_thread_setname(lcore_config[i].thread_id,
931 "Cannot set name for lcore thread\n");
935 * Launch a dummy function on all slave lcores, so that master lcore
936 * knows they are all ready when this function returns.
938 rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MASTER);
939 rte_eal_mp_wait_lcore();
941 /* initialize services so vdevs register service during bus_probe. */
942 ret = rte_service_init();
944 rte_eal_init_alert("rte_service_init() failed\n");
949 /* Probe all the buses and devices/drivers on them */
950 if (rte_bus_probe()) {
951 rte_eal_init_alert("Cannot probe devices\n");
956 /* initialize default service/lcore mappings and start running. Ignore
957 * -ENOTSUP, as it indicates no service coremask passed to EAL.
959 ret = rte_service_start_with_defaults();
960 if (ret < 0 && ret != -ENOTSUP) {
965 rte_eal_mcfg_complete();
971 enum rte_lcore_role_t
972 rte_eal_lcore_role(unsigned lcore_id)
974 return rte_config.lcore_role[lcore_id];
978 rte_eal_process_type(void)
980 return rte_config.process_type;
983 int rte_eal_has_hugepages(void)
985 return ! internal_config.no_hugetlbfs;
988 int rte_eal_has_pci(void)
990 return !internal_config.no_pci;
993 int rte_eal_create_uio_dev(void)
995 return internal_config.create_uio_dev;
999 rte_eal_vfio_intr_mode(void)
1001 return internal_config.vfio_intr_mode;
1005 rte_eal_check_module(const char *module_name)
1007 char sysfs_mod_name[PATH_MAX];
1011 if (NULL == module_name)
1014 /* Check if there is sysfs mounted */
1015 if (stat("/sys/module", &st) != 0) {
1016 RTE_LOG(DEBUG, EAL, "sysfs is not mounted! error %i (%s)\n",
1017 errno, strerror(errno));
1021 /* A module might be built-in, therefore try sysfs */
1022 n = snprintf(sysfs_mod_name, PATH_MAX, "/sys/module/%s", module_name);
1023 if (n < 0 || n > PATH_MAX) {
1024 RTE_LOG(DEBUG, EAL, "Could not format module path\n");
1028 if (stat(sysfs_mod_name, &st) != 0) {
1029 RTE_LOG(DEBUG, EAL, "Module %s not found! error %i (%s)\n",
1030 sysfs_mod_name, errno, strerror(errno));
1034 /* Module has been found */