app/test/test_timer_secondary.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2019 Intel Corporation
   3  */
   4
   5 #include <stdio.h>
   6 #include <string.h>
   7
   8 #include <rte_eal.h>
   9 #include <rte_lcore.h>
  10 #include <rte_debug.h>
  11 #include <rte_memzone.h>
  12 #include <rte_timer.h>
  13 #include <rte_cycles.h>
  14 #include <rte_mempool.h>
  15 #include <rte_random.h>
  16
  17 #include "test.h"
  18 #include "process.h"
  19
  20 #define NUM_TIMERS              (1 << 20) /* ~1M timers */
  21 #define NUM_LCORES_NEEDED       3
  22 #define TEST_INFO_MZ_NAME       "test_timer_info_mz"
  23 #define MSECPERSEC              1E3
  24
  25 #define launch_proc(ARGV) process_dup(ARGV, RTE_DIM(ARGV), __func__)
  26
  27 struct test_info {
  28         unsigned int main_lcore;
  29         unsigned int mgr_lcore;
  30         unsigned int sec_lcore;
  31         uint32_t timer_data_id;
  32         volatile int expected_count;
  33         volatile int expired_count;
  34         struct rte_mempool *tim_mempool;
  35         struct rte_timer *expired_timers[NUM_TIMERS];
  36         int expired_timers_idx;
  37         volatile int exit_flag;
  38 };
  39
  40 static int
  41 timer_secondary_spawn_wait(unsigned int lcore)
  42 {
  43         char coremask[10];
  44 #ifdef RTE_EXEC_ENV_LINUXAPP
  45         char tmp[PATH_MAX] = {0};
  46         char prefix[PATH_MAX] = {0};
  47
  48         get_current_prefix(tmp, sizeof(tmp));
  49
  50         snprintf(prefix, sizeof(prefix), "--file-prefix=%s", tmp);
  51 #else
  52         const char *prefix = "";
  53 #endif
  54         char const *argv[] = {
  55                 prgname,
  56                 "-c", coremask,
  57                 "--proc-type=secondary",
  58                 prefix
  59         };
  60
  61         snprintf(coremask, sizeof(coremask), "%x", (1 << lcore));
  62
  63         return launch_proc(argv);
  64 }
  65
  66 static void
  67 handle_expired_timer(struct rte_timer *tim)
  68 {
  69         struct test_info *test_info = tim->arg;
  70
  71         test_info->expired_count++;
  72         test_info->expired_timers[test_info->expired_timers_idx++] = tim;
  73 }
  74
  75 static int
  76 timer_manage_loop(void *arg)
  77 {
  78 #define TICK_MSECS 1
  79         uint64_t tick_cycles = TICK_MSECS * rte_get_timer_hz() / MSECPERSEC;
  80         uint64_t prev_tsc = 0, cur_tsc, diff_tsc;
  81         struct test_info *test_info = arg;
  82
  83         while (!test_info->exit_flag) {
  84                 cur_tsc = rte_rdtsc();
  85                 diff_tsc = cur_tsc - prev_tsc;
  86
  87                 if (diff_tsc > tick_cycles) {
  88                         /* Scan timer list for expired timers */
  89                         rte_timer_alt_manage(test_info->timer_data_id,
  90                                              NULL,
  91                                              0,
  92                                              handle_expired_timer);
  93
  94                         /* Return expired timer objects back to mempool */
  95                         rte_mempool_put_bulk(test_info->tim_mempool,
  96                                              (void **)test_info->expired_timers,
  97                                              test_info->expired_timers_idx);
  98
  99                         test_info->expired_timers_idx = 0;
 100
 101                         prev_tsc = cur_tsc;
 102                 }
 103
 104                 rte_pause();
 105         }
 106
 107         return 0;
 108 }
 109
 110 int
 111 test_timer_secondary(void)
 112 {
 113         int proc_type = rte_eal_process_type();
 114         const struct rte_memzone *mz;
 115         struct test_info *test_info;
 116         int ret;
 117
 118         if (proc_type == RTE_PROC_PRIMARY) {
 119                 if (rte_lcore_count() < NUM_LCORES_NEEDED) {
 120                         printf("Not enough cores for test_timer_secondary, expecting at least %u\n",
 121                                NUM_LCORES_NEEDED);
 122                         return TEST_SKIPPED;
 123                 }
 124
 125                 mz = rte_memzone_reserve(TEST_INFO_MZ_NAME, sizeof(*test_info),
 126                                          SOCKET_ID_ANY, 0);
 127                 TEST_ASSERT_NOT_NULL(mz, "Couldn't allocate memory for "
 128                                      "test data");
 129                 test_info = mz->addr;
 130
 131                 test_info->tim_mempool = rte_mempool_create("test_timer_mp",
 132                                 NUM_TIMERS, sizeof(struct rte_timer), 0, 0,
 133                                 NULL, NULL, NULL, NULL, rte_socket_id(), 0);
 134
 135                 ret = rte_timer_data_alloc(&test_info->timer_data_id);
 136                 TEST_ASSERT_SUCCESS(ret, "Failed to allocate timer data "
 137                                     "instance");
 138
 139                 unsigned int *main_lcorep = &test_info->main_lcore;
 140                 unsigned int *mgr_lcorep = &test_info->mgr_lcore;
 141                 unsigned int *sec_lcorep = &test_info->sec_lcore;
 142
 143                 *main_lcorep = rte_get_main_lcore();
 144                 *mgr_lcorep = rte_get_next_lcore(*main_lcorep, 1, 1);
 145                 *sec_lcorep = rte_get_next_lcore(*mgr_lcorep, 1, 1);
 146
 147                 ret = rte_eal_remote_launch(timer_manage_loop,
 148                                             (void *)test_info,
 149                                             *mgr_lcorep);
 150                 TEST_ASSERT_SUCCESS(ret, "Failed to launch timer manage loop");
 151
 152                 ret = timer_secondary_spawn_wait(*sec_lcorep);
 153                 TEST_ASSERT_SUCCESS(ret, "Secondary process execution failed");
 154
 155                 rte_delay_ms(2000);
 156
 157                 test_info->exit_flag = 1;
 158                 rte_eal_wait_lcore(*mgr_lcorep);
 159
 160 #ifdef RTE_LIBRTE_TIMER_DEBUG
 161                 rte_timer_alt_dump_stats(test_info->timer_data_id, stdout);
 162 #endif
 163
 164                 return test_info->expected_count == test_info->expired_count ?
 165                         TEST_SUCCESS : TEST_FAILED;
 166
 167         } else if (proc_type == RTE_PROC_SECONDARY) {
 168                 uint64_t ticks, timeout_ms;
 169                 struct rte_timer *tim;
 170                 int i;
 171
 172                 mz = rte_memzone_lookup(TEST_INFO_MZ_NAME);
 173                 TEST_ASSERT_NOT_NULL(mz, "Couldn't lookup memzone for "
 174                                      "test info");
 175                 test_info = mz->addr;
 176
 177                 for (i = 0; i < NUM_TIMERS; i++) {
 178                         rte_mempool_get(test_info->tim_mempool, (void **)&tim);
 179
 180                         rte_timer_init(tim);
 181
 182                         /* generate timeouts between 10 and 160 ms */
 183                         timeout_ms = ((rte_rand() & 0xF) + 1) * 10;
 184                         ticks = timeout_ms * rte_get_timer_hz() / MSECPERSEC;
 185
 186                         ret = rte_timer_alt_reset(test_info->timer_data_id,
 187                                                   tim, ticks, SINGLE,
 188                                                   test_info->mgr_lcore, NULL,
 189                                                   test_info);
 190                         if (ret < 0)
 191                                 return TEST_FAILED;
 192
 193                         test_info->expected_count++;
 194
 195                         /* randomly leave timer running or stop it */
 196                         if (rte_rand() & 1)
 197                                 continue;
 198
 199                         ret = rte_timer_alt_stop(test_info->timer_data_id,
 200                                                  tim);
 201                         if (ret == 0) {
 202                                 test_info->expected_count--;
 203                                 rte_mempool_put(test_info->tim_mempool,
 204                                                 (void *)tim);
 205                         }
 206
 207                 }
 208
 209                 return TEST_SUCCESS;
 210         }
 211
 212         return TEST_FAILED;
 213 }
 214
 215 REGISTER_TEST_COMMAND(timer_secondary_autotest, test_timer_secondary);