1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
3 */
4
5 #include <stdio.h>
6 #include <stdint.h>
7 #include <sys/queue.h>
8
9 #include <rte_common.h>
10 #include <rte_memory.h>
11 #include <rte_per_lcore.h>
12 #include <rte_launch.h>
13 #include <rte_eal.h>
14 #include <rte_lcore.h>
15 #include <rte_cycles.h>
16
17 #include "test.h"
18
19 /*
20 * Per-lcore variables and lcore launch
21 * ====================================
22 *
23 * - Use ``rte_eal_mp_remote_launch()`` to call ``assign_vars()`` on
24 * every available lcore. In this function, a per-lcore variable is
25 * assigned to the lcore_id.
26 *
27 * - Use ``rte_eal_mp_remote_launch()`` to call ``display_vars()`` on
28 * every available lcore. The function checks that the variable is
29 * correctly set, or returns -1.
30 *
31 * - If at least one per-core variable was not correct, the test function
32 * returns -1.
33 */
34
35 static RTE_DEFINE_PER_LCORE(unsigned, test) = 0x12345678;
36
37 static int
assign_vars(__rte_unused void * arg)38 assign_vars(__rte_unused void *arg)
39 {
40 if (RTE_PER_LCORE(test) != 0x12345678)
41 return -1;
42 RTE_PER_LCORE(test) = rte_lcore_id();
43 return 0;
44 }
45
46 static int
display_vars(__rte_unused void * arg)47 display_vars(__rte_unused void *arg)
48 {
49 unsigned lcore_id = rte_lcore_id();
50 unsigned var = RTE_PER_LCORE(test);
51 unsigned socket_id = rte_lcore_to_socket_id(lcore_id);
52
53 printf("on socket %u, on core %u, variable is %u\n", socket_id, lcore_id, var);
54 if (lcore_id != var)
55 return -1;
56
57 RTE_PER_LCORE(test) = 0x12345678;
58 return 0;
59 }
60
61 static int
test_per_lcore_delay(__rte_unused void * arg)62 test_per_lcore_delay(__rte_unused void *arg)
63 {
64 rte_delay_ms(100);
65 printf("wait 100ms on lcore %u\n", rte_lcore_id());
66
67 return 0;
68 }
69
70 static int
test_per_lcore(void)71 test_per_lcore(void)
72 {
73 unsigned lcore_id;
74 int ret;
75
76 rte_eal_mp_remote_launch(assign_vars, NULL, SKIP_MAIN);
77 RTE_LCORE_FOREACH_WORKER(lcore_id) {
78 if (rte_eal_wait_lcore(lcore_id) < 0)
79 return -1;
80 }
81
82 rte_eal_mp_remote_launch(display_vars, NULL, SKIP_MAIN);
83 RTE_LCORE_FOREACH_WORKER(lcore_id) {
84 if (rte_eal_wait_lcore(lcore_id) < 0)
85 return -1;
86 }
87
88 /* test if it could do remote launch twice at the same time or not */
89 ret = rte_eal_mp_remote_launch(test_per_lcore_delay, NULL, SKIP_MAIN);
90 if (ret < 0) {
91 printf("It fails to do remote launch but it should able to do\n");
92 return -1;
93 }
94 /* it should not be able to launch a lcore which is running */
95 ret = rte_eal_mp_remote_launch(test_per_lcore_delay, NULL, SKIP_MAIN);
96 if (ret == 0) {
97 printf("It does remote launch successfully but it should not at this time\n");
98 return -1;
99 }
100 RTE_LCORE_FOREACH_WORKER(lcore_id) {
101 if (rte_eal_wait_lcore(lcore_id) < 0)
102 return -1;
103 }
104
105 return 0;
106 }
107
108 REGISTER_FAST_TEST(per_lcore_autotest, true, true, test_per_lcore);
109