1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include <pthread.h>
#include <sched.h>
#include <assert.h>
#include <string.h>
#include <rte_lcore.h>
#include <rte_memory.h>
#include <rte_log.h>
#include "eal_thread.h"
RTE_DECLARE_PER_LCORE(unsigned , _socket_id);
unsigned rte_socket_id(void)
{
return RTE_PER_LCORE(_socket_id);
}
int eal_cpuset_socket_id(rte_cpuset_t *cpusetp)
{
unsigned cpu = 0;
int socket_id = SOCKET_ID_ANY;
int sid;
if (cpusetp == NULL)
return SOCKET_ID_ANY;
do {
if (!CPU_ISSET(cpu, cpusetp))
continue;
if (socket_id == SOCKET_ID_ANY)
socket_id = eal_cpu_socket_id(cpu);
sid = eal_cpu_socket_id(cpu);
if (socket_id != sid) {
socket_id = SOCKET_ID_ANY;
break;
}
} while (++cpu < RTE_MAX_LCORE);
return socket_id;
}
int
rte_thread_set_affinity(rte_cpuset_t *cpusetp)
{
int s;
unsigned lcore_id;
pthread_t tid;
tid = pthread_self();
s = pthread_setaffinity_np(tid, sizeof(rte_cpuset_t), cpusetp);
if (s != 0) {
RTE_LOG(ERR, EAL, "pthread_setaffinity_np failed\n");
return -1;
}
/* store socket_id in TLS for quick access */
RTE_PER_LCORE(_socket_id) =
eal_cpuset_socket_id(cpusetp);
/* store cpuset in TLS for quick access */
memmove(&RTE_PER_LCORE(_cpuset), cpusetp,
sizeof(rte_cpuset_t));
lcore_id = rte_lcore_id();
if (lcore_id != (unsigned)LCORE_ID_ANY) {
/* EAL thread will update lcore_config */
lcore_config[lcore_id].socket_id = RTE_PER_LCORE(_socket_id);
memmove(&lcore_config[lcore_id].cpuset, cpusetp,
sizeof(rte_cpuset_t));
}
return 0;
}
void
rte_thread_get_affinity(rte_cpuset_t *cpusetp)
{
assert(cpusetp);
memmove(cpusetp, &RTE_PER_LCORE(_cpuset),
sizeof(rte_cpuset_t));
}
int
eal_thread_dump_affinity(char *str, unsigned size)
{
rte_cpuset_t cpuset;
unsigned cpu;
int ret;
unsigned int out = 0;
rte_thread_get_affinity(&cpuset);
for (cpu = 0; cpu < RTE_MAX_LCORE; cpu++) {
if (!CPU_ISSET(cpu, &cpuset))
continue;
ret = snprintf(str + out,
size - out, "%u,", cpu);
if (ret < 0 || (unsigned)ret >= size - out) {
/* string will be truncated */
ret = -1;
goto exit;
}
out += ret;
}
ret = 0;
exit:
/* remove the last separator */
if (out > 0)
str[out - 1] = '\0';
return ret;
}
|
