-
-/*
- * Parse /sys/devices/system/cpu to get the number of physical and logical
- * processors on the machine. The function will fill the cpu_info
- * structure.
- */
-int
-rte_eal_cpu_init(void)
-{
- /* pointer to global configuration */
- struct rte_config *config = rte_eal_get_configuration();
- unsigned lcore_id;
- unsigned count = 0;
-
- /*
- * Parse the maximum set of logical cores, detect the subset of running
- * ones and enable them by default.
- */
- for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
- /* init cpuset for per lcore config */
- CPU_ZERO(&lcore_config[lcore_id].cpuset);
-
- /* in 1:1 mapping, record related cpu detected state */
- lcore_config[lcore_id].detected = cpu_detected(lcore_id);
- if (lcore_config[lcore_id].detected == 0) {
- config->lcore_role[lcore_id] = ROLE_OFF;
- continue;
- }
-
- /* By default, lcore 1:1 map to cpu id */
- CPU_SET(lcore_id, &lcore_config[lcore_id].cpuset);
-
- /* By default, each detected core is enabled */
- config->lcore_role[lcore_id] = ROLE_RTE;
- lcore_config[lcore_id].core_id = cpu_core_id(lcore_id);
- lcore_config[lcore_id].socket_id = cpu_socket_id(lcore_id);
- if (lcore_config[lcore_id].socket_id >= RTE_MAX_NUMA_NODES)
-#ifdef RTE_EAL_ALLOW_INV_SOCKET_ID
- lcore_config[lcore_id].socket_id = 0;
-#else
- rte_panic("Socket ID (%u) is greater than "
- "RTE_MAX_NUMA_NODES (%d)\n",
- lcore_config[lcore_id].socket_id, RTE_MAX_NUMA_NODES);
-#endif
- RTE_LOG(DEBUG, EAL, "Detected lcore %u as core %u on socket %u\n",
- lcore_id,
- lcore_config[lcore_id].core_id,
- lcore_config[lcore_id].socket_id);
- count ++;
- }
- /* Set the count of enabled logical cores of the EAL configuration */
- config->lcore_count = count;
- RTE_LOG(DEBUG, EAL, "Support maximum %u logical core(s) by configuration.\n",
- RTE_MAX_LCORE);
- RTE_LOG(DEBUG, EAL, "Detected %u lcore(s)\n", config->lcore_count);
-
- return 0;
-}