1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2018 Intel Corporation.
3 * Copyright(c) 2012-2014 6WIND S.A.
21 #include <sys/queue.h>
23 #if defined(RTE_ARCH_X86)
27 #include <rte_compat.h>
28 #include <rte_common.h>
29 #include <rte_debug.h>
30 #include <rte_memory.h>
31 #include <rte_launch.h>
33 #include <rte_eal_memconfig.h>
34 #include <rte_errno.h>
35 #include <rte_per_lcore.h>
36 #include <rte_lcore.h>
37 #include <rte_service_component.h>
39 #include <rte_random.h>
40 #include <rte_cycles.h>
41 #include <rte_string_fns.h>
42 #include <rte_cpuflags.h>
43 #include <rte_interrupts.h>
46 #include <rte_devargs.h>
47 #include <rte_version.h>
48 #include <rte_atomic.h>
49 #include <malloc_heap.h>
52 #include "eal_private.h"
53 #include "eal_thread.h"
54 #include "eal_internal_cfg.h"
55 #include "eal_filesystem.h"
56 #include "eal_hugepages.h"
57 #include "eal_options.h"
60 #define MEMSIZE_IF_NO_HUGE_PAGE (64ULL * 1024ULL * 1024ULL)
62 #define SOCKET_MEM_STRLEN (RTE_MAX_NUMA_NODES * 10)
64 /* Allow the application to print its usage message too if set */
65 static rte_usage_hook_t rte_application_usage_hook = NULL;
67 /* early configuration structure, when memory config is not mmapped */
68 static struct rte_mem_config early_mem_config;
70 /* define fd variable here, because file needs to be kept open for the
71 * duration of the program, as we hold a write lock on it in the primary proc */
72 static int mem_cfg_fd = -1;
74 static struct flock wr_lock = {
77 .l_start = offsetof(struct rte_mem_config, memsegs),
78 .l_len = sizeof(early_mem_config.memsegs),
81 /* Address of global and public configuration */
82 static struct rte_config rte_config = {
83 .mem_config = &early_mem_config,
86 /* internal configuration (per-core) */
87 struct lcore_config lcore_config[RTE_MAX_LCORE];
89 /* internal configuration */
90 struct internal_config internal_config;
92 /* used by rte_rdtsc() */
93 int rte_cycles_vmware_tsc_map;
95 /* platform-specific runtime dir */
96 static char runtime_dir[PATH_MAX];
99 eal_create_runtime_dir(void)
101 const char *directory = default_config_dir;
102 const char *xdg_runtime_dir = getenv("XDG_RUNTIME_DIR");
103 const char *fallback = "/tmp";
108 /* try XDG path first, fall back to /tmp */
109 if (xdg_runtime_dir != NULL)
110 directory = xdg_runtime_dir;
112 directory = fallback;
114 /* create DPDK subdirectory under runtime dir */
115 ret = snprintf(tmp, sizeof(tmp), "%s/dpdk", directory);
116 if (ret < 0 || ret == sizeof(tmp)) {
117 RTE_LOG(ERR, EAL, "Error creating DPDK runtime path name\n");
121 /* create prefix-specific subdirectory under DPDK runtime dir */
122 ret = snprintf(runtime_dir, sizeof(runtime_dir), "%s/%s",
123 tmp, internal_config.hugefile_prefix);
124 if (ret < 0 || ret == sizeof(runtime_dir)) {
125 RTE_LOG(ERR, EAL, "Error creating prefix-specific runtime path name\n");
129 /* create the path if it doesn't exist. no "mkdir -p" here, so do it
132 ret = mkdir(tmp, 0600);
133 if (ret < 0 && errno != EEXIST) {
134 RTE_LOG(ERR, EAL, "Error creating '%s': %s\n",
135 tmp, strerror(errno));
139 ret = mkdir(runtime_dir, 0600);
140 if (ret < 0 && errno != EEXIST) {
141 RTE_LOG(ERR, EAL, "Error creating '%s': %s\n",
142 runtime_dir, strerror(errno));
150 eal_get_runtime_dir(void)
155 /* Return user provided mbuf pool ops name */
156 const char * __rte_experimental
157 rte_eal_mbuf_user_pool_ops(void)
159 return internal_config.user_mbuf_pool_ops_name;
162 /* Return mbuf pool ops name */
164 rte_eal_mbuf_default_mempool_ops(void)
166 if (internal_config.user_mbuf_pool_ops_name == NULL)
167 return RTE_MBUF_DEFAULT_MEMPOOL_OPS;
169 return internal_config.user_mbuf_pool_ops_name;
172 /* Return a pointer to the configuration structure */
174 rte_eal_get_configuration(void)
180 rte_eal_iova_mode(void)
182 return rte_eal_get_configuration()->iova_mode;
185 /* parse a sysfs (or other) file containing one integer value */
187 eal_parse_sysfs_value(const char *filename, unsigned long *val)
193 if ((f = fopen(filename, "r")) == NULL) {
194 RTE_LOG(ERR, EAL, "%s(): cannot open sysfs value %s\n",
199 if (fgets(buf, sizeof(buf), f) == NULL) {
200 RTE_LOG(ERR, EAL, "%s(): cannot read sysfs value %s\n",
205 *val = strtoul(buf, &end, 0);
206 if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
207 RTE_LOG(ERR, EAL, "%s(): cannot parse sysfs value %s\n",
217 /* create memory configuration in shared/mmap memory. Take out
218 * a write lock on the memsegs, so we can auto-detect primary/secondary.
219 * This means we never close the file while running (auto-close on exit).
220 * We also don't lock the whole file, so that in future we can use read-locks
221 * on other parts, e.g. memzones, to detect if there are running secondary
224 rte_eal_config_create(void)
226 void *rte_mem_cfg_addr;
229 const char *pathname = eal_runtime_config_path();
231 if (internal_config.no_shconf)
234 /* map the config before hugepage address so that we don't waste a page */
235 if (internal_config.base_virtaddr != 0)
236 rte_mem_cfg_addr = (void *)
237 RTE_ALIGN_FLOOR(internal_config.base_virtaddr -
238 sizeof(struct rte_mem_config), sysconf(_SC_PAGE_SIZE));
240 rte_mem_cfg_addr = NULL;
243 mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0660);
245 rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
248 retval = ftruncate(mem_cfg_fd, sizeof(*rte_config.mem_config));
251 rte_panic("Cannot resize '%s' for rte_mem_config\n", pathname);
254 retval = fcntl(mem_cfg_fd, F_SETLK, &wr_lock);
257 rte_exit(EXIT_FAILURE, "Cannot create lock on '%s'. Is another primary "
258 "process running?\n", pathname);
261 rte_mem_cfg_addr = mmap(rte_mem_cfg_addr, sizeof(*rte_config.mem_config),
262 PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);
264 if (rte_mem_cfg_addr == MAP_FAILED){
265 rte_panic("Cannot mmap memory for rte_config\n");
267 memcpy(rte_mem_cfg_addr, &early_mem_config, sizeof(early_mem_config));
268 rte_config.mem_config = rte_mem_cfg_addr;
270 /* store address of the config in the config itself so that secondary
271 * processes could later map the config into this exact location */
272 rte_config.mem_config->mem_cfg_addr = (uintptr_t) rte_mem_cfg_addr;
276 /* attach to an existing shared memory config */
278 rte_eal_config_attach(void)
280 struct rte_mem_config *mem_config;
282 const char *pathname = eal_runtime_config_path();
284 if (internal_config.no_shconf)
288 mem_cfg_fd = open(pathname, O_RDWR);
290 rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
293 /* map it as read-only first */
294 mem_config = (struct rte_mem_config *) mmap(NULL, sizeof(*mem_config),
295 PROT_READ, MAP_SHARED, mem_cfg_fd, 0);
296 if (mem_config == MAP_FAILED)
297 rte_panic("Cannot mmap memory for rte_config! error %i (%s)\n",
298 errno, strerror(errno));
300 rte_config.mem_config = mem_config;
303 /* reattach the shared config at exact memory location primary process has it */
305 rte_eal_config_reattach(void)
307 struct rte_mem_config *mem_config;
308 void *rte_mem_cfg_addr;
310 if (internal_config.no_shconf)
313 /* save the address primary process has mapped shared config to */
314 rte_mem_cfg_addr = (void *) (uintptr_t) rte_config.mem_config->mem_cfg_addr;
316 /* unmap original config */
317 munmap(rte_config.mem_config, sizeof(struct rte_mem_config));
319 /* remap the config at proper address */
320 mem_config = (struct rte_mem_config *) mmap(rte_mem_cfg_addr,
321 sizeof(*mem_config), PROT_READ | PROT_WRITE, MAP_SHARED,
323 if (mem_config == MAP_FAILED || mem_config != rte_mem_cfg_addr) {
324 if (mem_config != MAP_FAILED)
325 /* errno is stale, don't use */
326 rte_panic("Cannot mmap memory for rte_config at [%p], got [%p]"
327 " - please use '--base-virtaddr' option\n",
328 rte_mem_cfg_addr, mem_config);
330 rte_panic("Cannot mmap memory for rte_config! error %i (%s)\n",
331 errno, strerror(errno));
335 rte_config.mem_config = mem_config;
338 /* Detect if we are a primary or a secondary process */
340 eal_proc_type_detect(void)
342 enum rte_proc_type_t ptype = RTE_PROC_PRIMARY;
343 const char *pathname = eal_runtime_config_path();
345 /* if we can open the file but not get a write-lock we are a secondary
346 * process. NOTE: if we get a file handle back, we keep that open
347 * and don't close it to prevent a race condition between multiple opens */
348 if (((mem_cfg_fd = open(pathname, O_RDWR)) >= 0) &&
349 (fcntl(mem_cfg_fd, F_SETLK, &wr_lock) < 0))
350 ptype = RTE_PROC_SECONDARY;
352 RTE_LOG(INFO, EAL, "Auto-detected process type: %s\n",
353 ptype == RTE_PROC_PRIMARY ? "PRIMARY" : "SECONDARY");
358 /* Sets up rte_config structure with the pointer to shared memory config.*/
360 rte_config_init(void)
362 rte_config.process_type = internal_config.process_type;
364 switch (rte_config.process_type){
365 case RTE_PROC_PRIMARY:
366 rte_eal_config_create();
368 case RTE_PROC_SECONDARY:
369 rte_eal_config_attach();
370 rte_eal_mcfg_wait_complete(rte_config.mem_config);
371 rte_eal_config_reattach();
374 case RTE_PROC_INVALID:
375 rte_panic("Invalid process type\n");
379 /* Unlocks hugepage directories that were locked by eal_hugepage_info_init */
381 eal_hugedirs_unlock(void)
385 for (i = 0; i < MAX_HUGEPAGE_SIZES; i++)
387 /* skip uninitialized */
388 if (internal_config.hugepage_info[i].lock_descriptor < 0)
390 /* unlock hugepage file */
391 flock(internal_config.hugepage_info[i].lock_descriptor, LOCK_UN);
392 close(internal_config.hugepage_info[i].lock_descriptor);
393 /* reset the field */
394 internal_config.hugepage_info[i].lock_descriptor = -1;
400 eal_usage(const char *prgname)
402 printf("\nUsage: %s ", prgname);
404 printf("EAL Linux options:\n"
405 " --"OPT_SOCKET_MEM" Memory to allocate on sockets (comma separated values)\n"
406 " --"OPT_HUGE_DIR" Directory where hugetlbfs is mounted\n"
407 " --"OPT_FILE_PREFIX" Prefix for hugepage filenames\n"
408 " --"OPT_BASE_VIRTADDR" Base virtual address\n"
409 " --"OPT_CREATE_UIO_DEV" Create /dev/uioX (usually done by hotplug)\n"
410 " --"OPT_VFIO_INTR" Interrupt mode for VFIO (legacy|msi|msix)\n"
411 " --"OPT_LEGACY_MEM" Legacy memory mode (no dynamic allocation, contiguous segments)\n"
412 " --"OPT_SINGLE_FILE_SEGMENTS" Put all hugepage memory in single files\n"
414 /* Allow the application to print its usage message too if hook is set */
415 if ( rte_application_usage_hook ) {
416 printf("===== Application Usage =====\n\n");
417 rte_application_usage_hook(prgname);
421 /* Set a per-application usage message */
423 rte_set_application_usage_hook( rte_usage_hook_t usage_func )
425 rte_usage_hook_t old_func;
427 /* Will be NULL on the first call to denote the last usage routine. */
428 old_func = rte_application_usage_hook;
429 rte_application_usage_hook = usage_func;
435 eal_parse_socket_mem(char *socket_mem)
437 char * arg[RTE_MAX_NUMA_NODES];
440 uint64_t total_mem = 0;
442 len = strnlen(socket_mem, SOCKET_MEM_STRLEN);
443 if (len == SOCKET_MEM_STRLEN) {
444 RTE_LOG(ERR, EAL, "--socket-mem is too long\n");
448 /* all other error cases will be caught later */
449 if (!isdigit(socket_mem[len-1]))
452 /* split the optarg into separate socket values */
453 arg_num = rte_strsplit(socket_mem, len,
454 arg, RTE_MAX_NUMA_NODES, ',');
456 /* if split failed, or 0 arguments */
460 internal_config.force_sockets = 1;
462 /* parse each defined socket option */
464 for (i = 0; i < arg_num; i++) {
466 internal_config.socket_mem[i] = strtoull(arg[i], &end, 10);
468 /* check for invalid input */
470 (arg[i][0] == '\0') || (end == NULL) || (*end != '\0'))
472 internal_config.socket_mem[i] *= 1024ULL;
473 internal_config.socket_mem[i] *= 1024ULL;
474 total_mem += internal_config.socket_mem[i];
477 /* check if we have a positive amount of total memory */
485 eal_parse_base_virtaddr(const char *arg)
491 addr = strtoull(arg, &end, 16);
493 /* check for errors */
494 if ((errno != 0) || (arg[0] == '\0') || end == NULL || (*end != '\0'))
497 /* make sure we don't exceed 32-bit boundary on 32-bit target */
499 if (addr >= UINTPTR_MAX)
503 /* align the addr on 16M boundary, 16MB is the minimum huge page
504 * size on IBM Power architecture. If the addr is aligned to 16MB,
505 * it can align to 2MB for x86. So this alignment can also be used
507 internal_config.base_virtaddr =
508 RTE_PTR_ALIGN_CEIL((uintptr_t)addr, (size_t)RTE_PGSIZE_16M);
514 eal_parse_vfio_intr(const char *mode)
519 enum rte_intr_mode value;
521 { "legacy", RTE_INTR_MODE_LEGACY },
522 { "msi", RTE_INTR_MODE_MSI },
523 { "msix", RTE_INTR_MODE_MSIX },
526 for (i = 0; i < RTE_DIM(map); i++) {
527 if (!strcmp(mode, map[i].name)) {
528 internal_config.vfio_intr_mode = map[i].value;
535 /* Parse the arguments for --log-level only */
537 eal_log_level_parse(int argc, char **argv)
542 const int old_optind = optind;
543 const int old_optopt = optopt;
544 char * const old_optarg = optarg;
549 while ((opt = getopt_long(argc, argvopt, eal_short_options,
550 eal_long_options, &option_index)) != EOF) {
554 /* getopt is not happy, stop right now */
558 ret = (opt == OPT_LOG_LEVEL_NUM) ?
559 eal_parse_common_option(opt, optarg, &internal_config) : 0;
561 /* common parser is not happy */
566 /* restore getopt lib */
572 /* Parse the argument given in the command line of the application */
574 eal_parse_args(int argc, char **argv)
579 char *prgname = argv[0];
580 const int old_optind = optind;
581 const int old_optopt = optopt;
582 char * const old_optarg = optarg;
587 while ((opt = getopt_long(argc, argvopt, eal_short_options,
588 eal_long_options, &option_index)) != EOF) {
590 /* getopt is not happy, stop right now */
597 ret = eal_parse_common_option(opt, optarg, &internal_config);
598 /* common parser is not happy */
604 /* common parser handled this option */
613 case OPT_HUGE_DIR_NUM:
614 internal_config.hugepage_dir = strdup(optarg);
617 case OPT_FILE_PREFIX_NUM:
618 internal_config.hugefile_prefix = strdup(optarg);
621 case OPT_SOCKET_MEM_NUM:
622 if (eal_parse_socket_mem(optarg) < 0) {
623 RTE_LOG(ERR, EAL, "invalid parameters for --"
624 OPT_SOCKET_MEM "\n");
631 case OPT_BASE_VIRTADDR_NUM:
632 if (eal_parse_base_virtaddr(optarg) < 0) {
633 RTE_LOG(ERR, EAL, "invalid parameter for --"
634 OPT_BASE_VIRTADDR "\n");
641 case OPT_VFIO_INTR_NUM:
642 if (eal_parse_vfio_intr(optarg) < 0) {
643 RTE_LOG(ERR, EAL, "invalid parameters for --"
651 case OPT_CREATE_UIO_DEV_NUM:
652 internal_config.create_uio_dev = 1;
655 case OPT_MBUF_POOL_OPS_NAME_NUM:
656 internal_config.user_mbuf_pool_ops_name =
661 if (opt < OPT_LONG_MIN_NUM && isprint(opt)) {
662 RTE_LOG(ERR, EAL, "Option %c is not supported "
664 } else if (opt >= OPT_LONG_MIN_NUM &&
665 opt < OPT_LONG_MAX_NUM) {
666 RTE_LOG(ERR, EAL, "Option %s is not supported "
668 eal_long_options[option_index].name);
670 RTE_LOG(ERR, EAL, "Option %d is not supported "
679 if (eal_adjust_config(&internal_config) != 0) {
685 if (eal_check_common_options(&internal_config) != 0) {
692 argv[optind-1] = prgname;
696 /* restore getopt lib */
705 check_socket(const struct rte_memseg_list *msl, void *arg)
707 int *socket_id = arg;
709 return *socket_id == msl->socket_id;
713 eal_check_mem_on_local_socket(void)
717 socket_id = rte_lcore_to_socket_id(rte_config.master_lcore);
719 if (rte_memseg_list_walk(check_socket, &socket_id) == 0)
720 RTE_LOG(WARNING, EAL, "WARNING: Master core has no memory on local socket!\n");
724 sync_func(__attribute__((unused)) void *arg)
730 rte_eal_mcfg_complete(void)
732 /* ALL shared mem_config related INIT DONE */
733 if (rte_config.process_type == RTE_PROC_PRIMARY)
734 rte_config.mem_config->magic = RTE_MAGIC;
736 internal_config.init_complete = 1;
740 * Request iopl privilege for all RPL, returns 0 on success
741 * iopl() call is mostly for the i386 architecture. For other architectures,
742 * return -1 to indicate IO privilege can't be changed in this way.
745 rte_eal_iopl_init(void)
747 #if defined(RTE_ARCH_X86)
755 static int rte_eal_vfio_setup(void)
757 if (rte_vfio_enable("vfio"))
764 static void rte_eal_init_alert(const char *msg)
766 fprintf(stderr, "EAL: FATAL: %s\n", msg);
767 RTE_LOG(ERR, EAL, "%s\n", msg);
770 /* Launch threads, called at application init(). */
772 rte_eal_init(int argc, char **argv)
776 static rte_atomic32_t run_once = RTE_ATOMIC32_INIT(0);
778 char cpuset[RTE_CPU_AFFINITY_STR_LEN];
779 char thread_name[RTE_MAX_THREAD_NAME_LEN];
781 /* checks if the machine is adequate */
782 if (!rte_cpu_is_supported()) {
783 rte_eal_init_alert("unsupported cpu type.");
788 if (!rte_atomic32_test_and_set(&run_once)) {
789 rte_eal_init_alert("already called initialization.");
790 rte_errno = EALREADY;
794 logid = strrchr(argv[0], '/');
795 logid = strdup(logid ? logid + 1: argv[0]);
797 thread_id = pthread_self();
799 eal_reset_internal_config(&internal_config);
801 /* set log level as early as possible */
802 eal_log_level_parse(argc, argv);
804 /* create runtime data directory */
805 if (eal_create_runtime_dir() < 0) {
806 rte_eal_init_alert("Cannot create runtime directory\n");
811 if (rte_eal_cpu_init() < 0) {
812 rte_eal_init_alert("Cannot detect lcores.");
817 fctret = eal_parse_args(argc, argv);
819 rte_eal_init_alert("Invalid 'command line' arguments.");
821 rte_atomic32_clear(&run_once);
825 if (eal_plugins_init() < 0) {
826 rte_eal_init_alert("Cannot init plugins\n");
828 rte_atomic32_clear(&run_once);
832 if (eal_option_device_parse()) {
834 rte_atomic32_clear(&run_once);
840 /* Put mp channel init before bus scan so that we can init the vdev
841 * bus through mp channel in the secondary process before the bus scan.
843 if (rte_mp_channel_init() < 0) {
844 rte_eal_init_alert("failed to init mp channel\n");
845 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
851 if (rte_bus_scan()) {
852 rte_eal_init_alert("Cannot scan the buses for devices\n");
854 rte_atomic32_clear(&run_once);
858 /* autodetect the iova mapping mode (default is iova_pa) */
859 rte_eal_get_configuration()->iova_mode = rte_bus_get_iommu_class();
861 /* Workaround for KNI which requires physical address to work */
862 if (rte_eal_get_configuration()->iova_mode == RTE_IOVA_VA &&
863 rte_eal_check_module("rte_kni") == 1) {
864 rte_eal_get_configuration()->iova_mode = RTE_IOVA_PA;
865 RTE_LOG(WARNING, EAL,
866 "Some devices want IOVA as VA but PA will be used because.. "
867 "KNI module inserted\n");
870 if (internal_config.no_hugetlbfs == 0) {
871 /* rte_config isn't initialized yet */
872 ret = internal_config.process_type == RTE_PROC_PRIMARY ?
873 eal_hugepage_info_init() :
874 eal_hugepage_info_read();
876 rte_eal_init_alert("Cannot get hugepage information.");
878 rte_atomic32_clear(&run_once);
883 if (internal_config.memory == 0 && internal_config.force_sockets == 0) {
884 if (internal_config.no_hugetlbfs)
885 internal_config.memory = MEMSIZE_IF_NO_HUGE_PAGE;
888 if (internal_config.vmware_tsc_map == 1) {
889 #ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT
890 rte_cycles_vmware_tsc_map = 1;
891 RTE_LOG (DEBUG, EAL, "Using VMWARE TSC MAP, "
892 "you must have monitor_control.pseudo_perfctr = TRUE\n");
894 RTE_LOG (WARNING, EAL, "Ignoring --vmware-tsc-map because "
895 "RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT is not set\n");
899 rte_srand(rte_rdtsc());
901 if (rte_eal_log_init(logid, internal_config.syslog_facility) < 0) {
902 rte_eal_init_alert("Cannot init logging.");
904 rte_atomic32_clear(&run_once);
909 if (rte_eal_vfio_setup() < 0) {
910 rte_eal_init_alert("Cannot init VFIO\n");
912 rte_atomic32_clear(&run_once);
916 /* in secondary processes, memory init may allocate additional fbarrays
917 * not present in primary processes, so to avoid any potential issues,
918 * initialize memzones first.
920 if (rte_eal_memzone_init() < 0) {
921 rte_eal_init_alert("Cannot init memzone\n");
926 if (rte_eal_memory_init() < 0) {
927 rte_eal_init_alert("Cannot init memory\n");
932 /* the directories are locked during eal_hugepage_info_init */
933 eal_hugedirs_unlock();
935 if (rte_eal_malloc_heap_init() < 0) {
936 rte_eal_init_alert("Cannot init malloc heap\n");
941 if (rte_eal_tailqs_init() < 0) {
942 rte_eal_init_alert("Cannot init tail queues for objects\n");
947 if (rte_eal_alarm_init() < 0) {
948 rte_eal_init_alert("Cannot init interrupt-handling thread\n");
949 /* rte_eal_alarm_init sets rte_errno on failure. */
953 if (rte_eal_timer_init() < 0) {
954 rte_eal_init_alert("Cannot init HPET or TSC timers\n");
959 eal_check_mem_on_local_socket();
961 eal_thread_init_master(rte_config.master_lcore);
963 ret = eal_thread_dump_affinity(cpuset, sizeof(cpuset));
965 RTE_LOG(DEBUG, EAL, "Master lcore %u is ready (tid=%x;cpuset=[%s%s])\n",
966 rte_config.master_lcore, (int)thread_id, cpuset,
967 ret == 0 ? "" : "...");
969 if (rte_eal_intr_init() < 0) {
970 rte_eal_init_alert("Cannot init interrupt-handling thread\n");
974 RTE_LCORE_FOREACH_SLAVE(i) {
977 * create communication pipes between master thread
980 if (pipe(lcore_config[i].pipe_master2slave) < 0)
981 rte_panic("Cannot create pipe\n");
982 if (pipe(lcore_config[i].pipe_slave2master) < 0)
983 rte_panic("Cannot create pipe\n");
985 lcore_config[i].state = WAIT;
987 /* create a thread for each lcore */
988 ret = pthread_create(&lcore_config[i].thread_id, NULL,
989 eal_thread_loop, NULL);
991 rte_panic("Cannot create thread\n");
993 /* Set thread_name for aid in debugging. */
994 snprintf(thread_name, sizeof(thread_name),
995 "lcore-slave-%d", i);
996 ret = rte_thread_setname(lcore_config[i].thread_id,
1000 "Cannot set name for lcore thread\n");
1004 * Launch a dummy function on all slave lcores, so that master lcore
1005 * knows they are all ready when this function returns.
1007 rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MASTER);
1008 rte_eal_mp_wait_lcore();
1010 /* initialize services so vdevs register service during bus_probe. */
1011 ret = rte_service_init();
1013 rte_eal_init_alert("rte_service_init() failed\n");
1014 rte_errno = ENOEXEC;
1018 /* Probe all the buses and devices/drivers on them */
1019 if (rte_bus_probe()) {
1020 rte_eal_init_alert("Cannot probe devices\n");
1021 rte_errno = ENOTSUP;
1026 /* Register mp action after probe() so that we got enough info */
1027 if (rte_vfio_is_enabled("vfio") && vfio_mp_sync_setup() < 0)
1031 /* initialize default service/lcore mappings and start running. Ignore
1032 * -ENOTSUP, as it indicates no service coremask passed to EAL.
1034 ret = rte_service_start_with_defaults();
1035 if (ret < 0 && ret != -ENOTSUP) {
1036 rte_errno = ENOEXEC;
1040 rte_eal_mcfg_complete();
1045 int __rte_experimental
1046 rte_eal_cleanup(void)
1048 rte_service_finalize();
1053 enum rte_lcore_role_t
1054 rte_eal_lcore_role(unsigned lcore_id)
1056 return rte_config.lcore_role[lcore_id];
1059 enum rte_proc_type_t
1060 rte_eal_process_type(void)
1062 return rte_config.process_type;
1065 int rte_eal_has_hugepages(void)
1067 return ! internal_config.no_hugetlbfs;
1070 int rte_eal_has_pci(void)
1072 return !internal_config.no_pci;
1075 int rte_eal_create_uio_dev(void)
1077 return internal_config.create_uio_dev;
1081 rte_eal_vfio_intr_mode(void)
1083 return internal_config.vfio_intr_mode;
1087 rte_eal_check_module(const char *module_name)
1089 char sysfs_mod_name[PATH_MAX];
1093 if (NULL == module_name)
1096 /* Check if there is sysfs mounted */
1097 if (stat("/sys/module", &st) != 0) {
1098 RTE_LOG(DEBUG, EAL, "sysfs is not mounted! error %i (%s)\n",
1099 errno, strerror(errno));
1103 /* A module might be built-in, therefore try sysfs */
1104 n = snprintf(sysfs_mod_name, PATH_MAX, "/sys/module/%s", module_name);
1105 if (n < 0 || n > PATH_MAX) {
1106 RTE_LOG(DEBUG, EAL, "Could not format module path\n");
1110 if (stat(sysfs_mod_name, &st) != 0) {
1111 RTE_LOG(DEBUG, EAL, "Module %s not found! error %i (%s)\n",
1112 sysfs_mod_name, errno, strerror(errno));
1116 /* Module has been found */