1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
15 #include <rte_lcore.h>
16 #include <rte_memory.h>
18 #include <rte_trace_point.h>
20 #include "eal_internal_cfg.h"
21 #include "eal_private.h"
22 #include "eal_thread.h"
24 RTE_DECLARE_PER_LCORE(unsigned , _socket_id);
26 unsigned rte_socket_id(void)
28 return RTE_PER_LCORE(_socket_id);
32 rte_lcore_has_role(unsigned int lcore_id, enum rte_lcore_role_t role)
34 struct rte_config *cfg = rte_eal_get_configuration();
36 if (lcore_id >= RTE_MAX_LCORE)
39 return cfg->lcore_role[lcore_id] == role;
43 eal_cpuset_socket_id(rte_cpuset_t *cpusetp)
46 int socket_id = SOCKET_ID_ANY;
53 if (!CPU_ISSET(cpu, cpusetp))
56 if (socket_id == SOCKET_ID_ANY)
57 socket_id = eal_cpu_socket_id(cpu);
59 sid = eal_cpu_socket_id(cpu);
60 if (socket_id != sid) {
61 socket_id = SOCKET_ID_ANY;
65 } while (++cpu < CPU_SETSIZE);
71 rte_thread_set_affinity(rte_cpuset_t *cpusetp)
79 s = pthread_setaffinity_np(tid, sizeof(rte_cpuset_t), cpusetp);
81 RTE_LOG(ERR, EAL, "pthread_setaffinity_np failed\n");
85 /* store socket_id in TLS for quick access */
86 RTE_PER_LCORE(_socket_id) =
87 eal_cpuset_socket_id(cpusetp);
89 /* store cpuset in TLS for quick access */
90 memmove(&RTE_PER_LCORE(_cpuset), cpusetp,
91 sizeof(rte_cpuset_t));
93 lcore_id = rte_lcore_id();
94 if (lcore_id != (unsigned)LCORE_ID_ANY) {
95 /* EAL thread will update lcore_config */
96 lcore_config[lcore_id].socket_id = RTE_PER_LCORE(_socket_id);
97 memmove(&lcore_config[lcore_id].cpuset, cpusetp,
98 sizeof(rte_cpuset_t));
105 rte_thread_get_affinity(rte_cpuset_t *cpusetp)
108 memmove(cpusetp, &RTE_PER_LCORE(_cpuset),
109 sizeof(rte_cpuset_t));
113 eal_thread_dump_affinity(char *str, unsigned size)
118 unsigned int out = 0;
120 rte_thread_get_affinity(&cpuset);
122 for (cpu = 0; cpu < CPU_SETSIZE; cpu++) {
123 if (!CPU_ISSET(cpu, &cpuset))
126 ret = snprintf(str + out,
127 size - out, "%u,", cpu);
128 if (ret < 0 || (unsigned)ret >= size - out) {
129 /* string will be truncated */
139 /* remove the last separator */
147 struct rte_thread_ctrl_params {
148 void *(*start_routine)(void *);
150 pthread_barrier_t configured;
153 static void *rte_thread_init(void *arg)
156 rte_cpuset_t *cpuset = &internal_config.ctrl_cpuset;
157 struct rte_thread_ctrl_params *params = arg;
158 void *(*start_routine)(void *) = params->start_routine;
159 void *routine_arg = params->arg;
161 /* Store cpuset in TLS for quick access */
162 memmove(&RTE_PER_LCORE(_cpuset), cpuset, sizeof(rte_cpuset_t));
164 ret = pthread_barrier_wait(¶ms->configured);
165 if (ret == PTHREAD_BARRIER_SERIAL_THREAD) {
166 pthread_barrier_destroy(¶ms->configured);
169 __rte_trace_mem_per_thread_alloc();
170 return start_routine(routine_arg);
174 rte_ctrl_thread_create(pthread_t *thread, const char *name,
175 const pthread_attr_t *attr,
176 void *(*start_routine)(void *), void *arg)
178 rte_cpuset_t *cpuset = &internal_config.ctrl_cpuset;
179 struct rte_thread_ctrl_params *params;
182 params = malloc(sizeof(*params));
186 params->start_routine = start_routine;
189 pthread_barrier_init(¶ms->configured, NULL, 2);
191 ret = pthread_create(thread, attr, rte_thread_init, (void *)params);
198 ret = rte_thread_setname(*thread, name);
201 "Cannot set name for ctrl thread\n");
204 ret = pthread_setaffinity_np(*thread, sizeof(*cpuset), cpuset);
208 ret = pthread_barrier_wait(¶ms->configured);
209 if (ret == PTHREAD_BARRIER_SERIAL_THREAD) {
210 pthread_barrier_destroy(¶ms->configured);
217 if (PTHREAD_BARRIER_SERIAL_THREAD ==
218 pthread_barrier_wait(¶ms->configured)) {
219 pthread_barrier_destroy(¶ms->configured);
222 pthread_cancel(*thread);
223 pthread_join(*thread, NULL);