1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
15 #include <rte_lcore.h>
16 #include <rte_memory.h>
19 #include "eal_internal_cfg.h"
20 #include "eal_private.h"
21 #include "eal_thread.h"
23 RTE_DECLARE_PER_LCORE(unsigned , _socket_id);
25 unsigned rte_socket_id(void)
27 return RTE_PER_LCORE(_socket_id);
31 rte_lcore_has_role(unsigned int lcore_id, enum rte_lcore_role_t role)
33 struct rte_config *cfg = rte_eal_get_configuration();
35 if (lcore_id >= RTE_MAX_LCORE)
38 return cfg->lcore_role[lcore_id] == role;
41 int eal_cpuset_socket_id(rte_cpuset_t *cpusetp)
44 int socket_id = SOCKET_ID_ANY;
51 if (!CPU_ISSET(cpu, cpusetp))
54 if (socket_id == SOCKET_ID_ANY)
55 socket_id = eal_cpu_socket_id(cpu);
57 sid = eal_cpu_socket_id(cpu);
58 if (socket_id != sid) {
59 socket_id = SOCKET_ID_ANY;
63 } while (++cpu < RTE_MAX_LCORE);
69 rte_thread_set_affinity(rte_cpuset_t *cpusetp)
77 s = pthread_setaffinity_np(tid, sizeof(rte_cpuset_t), cpusetp);
79 RTE_LOG(ERR, EAL, "pthread_setaffinity_np failed\n");
83 /* store socket_id in TLS for quick access */
84 RTE_PER_LCORE(_socket_id) =
85 eal_cpuset_socket_id(cpusetp);
87 /* store cpuset in TLS for quick access */
88 memmove(&RTE_PER_LCORE(_cpuset), cpusetp,
89 sizeof(rte_cpuset_t));
91 lcore_id = rte_lcore_id();
92 if (lcore_id != (unsigned)LCORE_ID_ANY) {
93 /* EAL thread will update lcore_config */
94 lcore_config[lcore_id].socket_id = RTE_PER_LCORE(_socket_id);
95 memmove(&lcore_config[lcore_id].cpuset, cpusetp,
96 sizeof(rte_cpuset_t));
103 rte_thread_get_affinity(rte_cpuset_t *cpusetp)
106 memmove(cpusetp, &RTE_PER_LCORE(_cpuset),
107 sizeof(rte_cpuset_t));
111 eal_thread_dump_affinity(char *str, unsigned size)
116 unsigned int out = 0;
118 rte_thread_get_affinity(&cpuset);
120 for (cpu = 0; cpu < RTE_MAX_LCORE; cpu++) {
121 if (!CPU_ISSET(cpu, &cpuset))
124 ret = snprintf(str + out,
125 size - out, "%u,", cpu);
126 if (ret < 0 || (unsigned)ret >= size - out) {
127 /* string will be truncated */
137 /* remove the last separator */
145 struct rte_thread_ctrl_params {
146 void *(*start_routine)(void *);
148 pthread_barrier_t configured;
151 static void *rte_thread_init(void *arg)
154 struct rte_thread_ctrl_params *params = arg;
155 void *(*start_routine)(void *) = params->start_routine;
156 void *routine_arg = params->arg;
158 ret = pthread_barrier_wait(¶ms->configured);
159 if (ret == PTHREAD_BARRIER_SERIAL_THREAD) {
160 pthread_barrier_destroy(¶ms->configured);
164 return start_routine(routine_arg);
168 rte_ctrl_thread_create(pthread_t *thread, const char *name,
169 const pthread_attr_t *attr,
170 void *(*start_routine)(void *), void *arg)
172 rte_cpuset_t *cpuset = &internal_config.ctrl_cpuset;
173 struct rte_thread_ctrl_params *params;
176 params = malloc(sizeof(*params));
180 params->start_routine = start_routine;
183 pthread_barrier_init(¶ms->configured, NULL, 2);
185 ret = pthread_create(thread, attr, rte_thread_init, (void *)params);
192 ret = rte_thread_setname(*thread, name);
195 "Cannot set name for ctrl thread\n");
198 ret = pthread_setaffinity_np(*thread, sizeof(*cpuset), cpuset);
202 ret = pthread_barrier_wait(¶ms->configured);
203 if (ret == PTHREAD_BARRIER_SERIAL_THREAD) {
204 pthread_barrier_destroy(¶ms->configured);
211 if (PTHREAD_BARRIER_SERIAL_THREAD ==
212 pthread_barrier_wait(¶ms->configured)) {
213 pthread_barrier_destroy(¶ms->configured);
216 pthread_cancel(*thread);
217 pthread_join(*thread, NULL);