4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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
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.
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.
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"
45 /* No topology information available on FreeBSD including NUMA info */
46 #define cpu_core_id(X) 0
47 #define cpu_socket_id(X) 0
52 int mib[2] = {CTL_HW, HW_NCPU};
54 size_t len = sizeof(ncpu);
56 sysctl(mib, 2, &ncpu, &len, NULL, 0);
57 RTE_LOG(INFO, EAL, "Sysctl reports %d cpus\n", ncpu);
62 * fill the cpu_info structure with as much info as we can get.
63 * code is similar to linux version, but sadly available info is less.
66 rte_eal_cpu_init(void)
68 /* pointer to global configuration */
69 struct rte_config *config = rte_eal_get_configuration();
73 const unsigned ncpus = get_ncpus();
75 /* disable lcores that were not detected */
76 RTE_LCORE_FOREACH(lcore_id) {
78 lcore_config[lcore_id].detected = (lcore_id < ncpus);
79 if (lcore_config[lcore_id].detected == 0) {
80 config->lcore_role[lcore_id] = ROLE_OFF;
84 lcore_config[lcore_id].core_id = cpu_core_id(lcore_id);
85 lcore_config[lcore_id].socket_id = cpu_socket_id(lcore_id);
86 if (lcore_config[lcore_id].socket_id >= RTE_MAX_NUMA_NODES)
87 #ifdef RTE_EAL_ALLOW_INV_SOCKET_ID
88 lcore_config[lcore_id].socket_id = 0;
90 rte_panic("Socket ID (%u) is greater than "
91 "RTE_MAX_NUMA_NODES (%d)\n",
92 lcore_config[lcore_id].socket_id, RTE_MAX_NUMA_NODES);
94 RTE_LOG(DEBUG, EAL, "Detected lcore %u\n",
98 config->lcore_count = count;
99 RTE_LOG(DEBUG, EAL, "Support maximum %u logical core(s) by configuration.\n",
101 RTE_LOG(DEBUG, EAL, "Detected %u lcore(s)\n", config->lcore_count);