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36 #include <sys/queue.h>
38 #include <rte_common.h>
39 #include <rte_memory.h>
40 #include <rte_per_lcore.h>
41 #include <rte_launch.h>
43 #include <rte_lcore.h>
44 #include <rte_cycles.h>
49 * Per-lcore variables and lcore launch
50 * ====================================
52 * - Use ``rte_eal_mp_remote_launch()`` to call ``assign_vars()`` on
53 * every available lcore. In this function, a per-lcore variable is
54 * assigned to the lcore_id.
56 * - Use ``rte_eal_mp_remote_launch()`` to call ``display_vars()`` on
57 * every available lcore. The function checks that the variable is
58 * correctly set, or returns -1.
60 * - If at least one per-core variable was not correct, the test function
64 static RTE_DEFINE_PER_LCORE(unsigned, test) = 0x12345678;
67 assign_vars(__attribute__((unused)) void *arg)
69 if (RTE_PER_LCORE(test) != 0x12345678)
71 RTE_PER_LCORE(test) = rte_lcore_id();
76 display_vars(__attribute__((unused)) void *arg)
78 unsigned lcore_id = rte_lcore_id();
79 unsigned var = RTE_PER_LCORE(test);
80 unsigned socket_id = rte_lcore_to_socket_id(lcore_id);
82 printf("on socket %u, on core %u, variable is %u\n", socket_id, lcore_id, var);
86 RTE_PER_LCORE(test) = 0x12345678;
91 test_per_lcore_delay(__attribute__((unused)) void *arg)
94 printf("wait 100ms on lcore %u\n", rte_lcore_id());
105 rte_eal_mp_remote_launch(assign_vars, NULL, SKIP_MASTER);
106 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
107 if (rte_eal_wait_lcore(lcore_id) < 0)
111 rte_eal_mp_remote_launch(display_vars, NULL, SKIP_MASTER);
112 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
113 if (rte_eal_wait_lcore(lcore_id) < 0)
117 /* test if it could do remote launch twice at the same time or not */
118 ret = rte_eal_mp_remote_launch(test_per_lcore_delay, NULL, SKIP_MASTER);
120 printf("It fails to do remote launch but it should able to do\n");
123 /* it should not be able to launch a lcore which is running */
124 ret = rte_eal_mp_remote_launch(test_per_lcore_delay, NULL, SKIP_MASTER);
126 printf("It does remote launch successfully but it should not at this time\n");
129 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
130 if (rte_eal_wait_lcore(lcore_id) < 0)
137 REGISTER_TEST_COMMAND(per_lcore_autotest, test_per_lcore);