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36 #include <sys/queue.h>
38 #include <cmdline_parse.h>
40 #include <rte_common.h>
41 #include <rte_memory.h>
42 #include <rte_memzone.h>
43 #include <rte_per_lcore.h>
44 #include <rte_launch.h>
45 #include <rte_tailq.h>
47 #include <rte_per_lcore.h>
48 #include <rte_lcore.h>
49 #include <rte_cycles.h>
54 * Per-lcore variables and lcore launch
55 * ====================================
57 * - Use ``rte_eal_mp_remote_launch()`` to call ``assign_vars()`` on
58 * every available lcore. In this function, a per-lcore variable is
59 * assigned to the lcore_id.
61 * - Use ``rte_eal_mp_remote_launch()`` to call ``display_vars()`` on
62 * every available lcore. The function checks that the variable is
63 * correctly set, or returns -1.
65 * - If at least one per-core variable was not correct, the test function
69 static RTE_DEFINE_PER_LCORE(unsigned, test) = 0x12345678;
72 assign_vars(__attribute__((unused)) void *arg)
74 if (RTE_PER_LCORE(test) != 0x12345678)
76 RTE_PER_LCORE(test) = rte_lcore_id();
81 display_vars(__attribute__((unused)) void *arg)
83 unsigned lcore_id = rte_lcore_id();
84 unsigned var = RTE_PER_LCORE(test);
85 unsigned socket_id = rte_lcore_to_socket_id(lcore_id);
87 printf("on socket %u, on core %u, variable is %u\n", socket_id, lcore_id, var);
91 RTE_PER_LCORE(test) = 0x12345678;
96 test_per_lcore_delay(__attribute__((unused)) void *arg)
99 printf("wait 5000ms on lcore %u\n", rte_lcore_id());
110 rte_eal_mp_remote_launch(assign_vars, NULL, SKIP_MASTER);
111 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
112 if (rte_eal_wait_lcore(lcore_id) < 0)
116 rte_eal_mp_remote_launch(display_vars, NULL, SKIP_MASTER);
117 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
118 if (rte_eal_wait_lcore(lcore_id) < 0)
122 /* test if it could do remote launch twice at the same time or not */
123 ret = rte_eal_mp_remote_launch(test_per_lcore_delay, NULL, SKIP_MASTER);
125 printf("It fails to do remote launch but it should able to do\n");
128 /* it should not be able to launch a lcore which is running */
129 ret = rte_eal_mp_remote_launch(test_per_lcore_delay, NULL, SKIP_MASTER);
131 printf("It does remote launch successfully but it should not at this time\n");
134 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
135 if (rte_eal_wait_lcore(lcore_id) < 0)