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35 #include <sys/sysctl.h>
39 #include <rte_lcore.h>
40 #include <rte_common.h>
41 #include <rte_debug.h>
43 #include "eal_private.h"
44 #include "eal_thread.h"
46 /* No topology information available on FreeBSD including NUMA info */
47 #define cpu_core_id(X) 0
48 #define cpu_socket_id(X) 0
53 int mib[2] = {CTL_HW, HW_NCPU};
55 size_t len = sizeof(ncpu);
57 sysctl(mib, 2, &ncpu, &len, NULL, 0);
58 RTE_LOG(INFO, EAL, "Sysctl reports %d cpus\n", ncpu);
63 * fill the cpu_info structure with as much info as we can get.
64 * code is similar to linux version, but sadly available info is less.
67 rte_eal_cpu_init(void)
69 /* pointer to global configuration */
70 struct rte_config *config = rte_eal_get_configuration();
74 const unsigned ncpus = get_ncpus();
76 * Parse the maximum set of logical cores, detect the subset of running
77 * ones and enable them by default.
79 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
80 /* init cpuset for per lcore config */
81 CPU_ZERO(&lcore_config[lcore_id].cpuset);
83 lcore_config[lcore_id].detected = (lcore_id < ncpus);
84 if (lcore_config[lcore_id].detected == 0) {
85 config->lcore_role[lcore_id] = ROLE_OFF;
89 /* By default, lcore 1:1 map to cpu id */
90 CPU_SET(lcore_id, &lcore_config[lcore_id].cpuset);
92 /* By default, each detected core is enabled */
93 config->lcore_role[lcore_id] = ROLE_RTE;
94 lcore_config[lcore_id].core_id = cpu_core_id(lcore_id);
95 lcore_config[lcore_id].socket_id = cpu_socket_id(lcore_id);
96 if (lcore_config[lcore_id].socket_id >= RTE_MAX_NUMA_NODES)
97 #ifdef RTE_EAL_ALLOW_INV_SOCKET_ID
98 lcore_config[lcore_id].socket_id = 0;
100 rte_panic("Socket ID (%u) is greater than "
101 "RTE_MAX_NUMA_NODES (%d)\n",
102 lcore_config[lcore_id].socket_id, RTE_MAX_NUMA_NODES);
104 RTE_LOG(DEBUG, EAL, "Detected lcore %u\n",
108 /* Set the count of enabled logical cores of the EAL configuration */
109 config->lcore_count = count;
110 RTE_LOG(DEBUG, EAL, "Support maximum %u logical core(s) by configuration.\n",
112 RTE_LOG(DEBUG, EAL, "Detected %u lcore(s)\n", config->lcore_count);
118 eal_cpu_socket_id(__rte_unused unsigned cpu_id)
120 return cpu_socket_id(cpu_id);