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 #ifndef RTE_EXEC_ENV_WINDOWS
19 #include <rte_trace_point.h>
22 #include "eal_internal_cfg.h"
23 #include "eal_private.h"
24 #include "eal_thread.h"
26 RTE_DECLARE_PER_LCORE(unsigned , _socket_id);
28 unsigned rte_socket_id(void)
30 return RTE_PER_LCORE(_socket_id);
34 rte_lcore_has_role(unsigned int lcore_id, enum rte_lcore_role_t role)
36 struct rte_config *cfg = rte_eal_get_configuration();
38 if (lcore_id >= RTE_MAX_LCORE)
41 return cfg->lcore_role[lcore_id] == role;
45 eal_cpuset_socket_id(rte_cpuset_t *cpusetp)
48 int socket_id = SOCKET_ID_ANY;
55 if (!CPU_ISSET(cpu, cpusetp))
58 if (socket_id == SOCKET_ID_ANY)
59 socket_id = eal_cpu_socket_id(cpu);
61 sid = eal_cpu_socket_id(cpu);
62 if (socket_id != sid) {
63 socket_id = SOCKET_ID_ANY;
67 } while (++cpu < CPU_SETSIZE);
73 rte_thread_set_affinity(rte_cpuset_t *cpusetp)
81 s = pthread_setaffinity_np(tid, sizeof(rte_cpuset_t), cpusetp);
83 RTE_LOG(ERR, EAL, "pthread_setaffinity_np failed\n");
87 /* store socket_id in TLS for quick access */
88 RTE_PER_LCORE(_socket_id) =
89 eal_cpuset_socket_id(cpusetp);
91 /* store cpuset in TLS for quick access */
92 memmove(&RTE_PER_LCORE(_cpuset), cpusetp,
93 sizeof(rte_cpuset_t));
95 lcore_id = rte_lcore_id();
96 if (lcore_id != (unsigned)LCORE_ID_ANY) {
97 /* EAL thread will update lcore_config */
98 lcore_config[lcore_id].socket_id = RTE_PER_LCORE(_socket_id);
99 memmove(&lcore_config[lcore_id].cpuset, cpusetp,
100 sizeof(rte_cpuset_t));
107 rte_thread_get_affinity(rte_cpuset_t *cpusetp)
110 memmove(cpusetp, &RTE_PER_LCORE(_cpuset),
111 sizeof(rte_cpuset_t));
115 eal_thread_dump_affinity(char *str, unsigned size)
120 unsigned int out = 0;
122 rte_thread_get_affinity(&cpuset);
124 for (cpu = 0; cpu < CPU_SETSIZE; cpu++) {
125 if (!CPU_ISSET(cpu, &cpuset))
128 ret = snprintf(str + out,
129 size - out, "%u,", cpu);
130 if (ret < 0 || (unsigned)ret >= size - out) {
131 /* string will be truncated */
141 /* remove the last separator */
149 struct rte_thread_ctrl_params {
150 void *(*start_routine)(void *);
152 pthread_barrier_t configured;
155 static void *rte_thread_init(void *arg)
158 rte_cpuset_t *cpuset = &internal_config.ctrl_cpuset;
159 struct rte_thread_ctrl_params *params = arg;
160 void *(*start_routine)(void *) = params->start_routine;
161 void *routine_arg = params->arg;
163 /* Store cpuset in TLS for quick access */
164 memmove(&RTE_PER_LCORE(_cpuset), cpuset, sizeof(rte_cpuset_t));
166 ret = pthread_barrier_wait(¶ms->configured);
167 if (ret == PTHREAD_BARRIER_SERIAL_THREAD) {
168 pthread_barrier_destroy(¶ms->configured);
172 #ifndef RTE_EXEC_ENV_WINDOWS
173 __rte_trace_mem_per_thread_alloc();
175 return start_routine(routine_arg);
179 rte_ctrl_thread_create(pthread_t *thread, const char *name,
180 const pthread_attr_t *attr,
181 void *(*start_routine)(void *), void *arg)
183 rte_cpuset_t *cpuset = &internal_config.ctrl_cpuset;
184 struct rte_thread_ctrl_params *params;
187 params = malloc(sizeof(*params));
191 params->start_routine = start_routine;
194 pthread_barrier_init(¶ms->configured, NULL, 2);
196 ret = pthread_create(thread, attr, rte_thread_init, (void *)params);
203 ret = rte_thread_setname(*thread, name);
206 "Cannot set name for ctrl thread\n");
209 ret = pthread_setaffinity_np(*thread, sizeof(*cpuset), cpuset);
213 ret = pthread_barrier_wait(¶ms->configured);
214 if (ret == PTHREAD_BARRIER_SERIAL_THREAD) {
215 pthread_barrier_destroy(¶ms->configured);
222 if (PTHREAD_BARRIER_SERIAL_THREAD ==
223 pthread_barrier_wait(¶ms->configured)) {
224 pthread_barrier_destroy(¶ms->configured);
227 pthread_cancel(*thread);
228 pthread_join(*thread, NULL);