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_atomic.h>
  13 #include <rte_timer.h>
  14 #include <rte_cycles.h>
  15 #include <rte_mempool.h>
  16 #include <rte_random.h>
  17
  18 #include "test.h"
  19 #include "process.h"
  20
  21 #define NUM_TIMERS              (1 << 20) /* ~1M timers */
  22 #define NUM_LCORES_NEEDED       3
  23 #define TEST_INFO_MZ_NAME       "test_timer_info_mz"
  24 #define MSECPERSEC              1E3
  25
  26 #define launch_proc(ARGV) \
  27         process_dup(ARGV, sizeof(ARGV)/(sizeof(ARGV[0])), __func__)
  28
  29 struct test_info {
  30         unsigned int mstr_lcore;
  31         unsigned int mgr_lcore;
  32         unsigned int sec_lcore;
  33         uint32_t timer_data_id;
  34         volatile int expected_count;
  35         volatile int expired_count;
  36         struct rte_mempool *tim_mempool;
  37         struct rte_timer *expired_timers[NUM_TIMERS];
  38         int expired_timers_idx;
  39         volatile int exit_flag;
  40 };
  41
  42 static int
  43 timer_secondary_spawn_wait(unsigned int lcore)
  44 {
  45         char coremask[10];
  46 #ifdef RTE_EXEC_ENV_LINUXAPP
  47         char tmp[PATH_MAX] = {0};
  48         char prefix[PATH_MAX] = {0};
  49
  50         get_current_prefix(tmp, sizeof(tmp));
  51
  52         snprintf(prefix, sizeof(prefix), "--file-prefix=%s", tmp);
  53 #else
  54         const char *prefix = "";
  55 #endif
  56         char const *argv[] = {
  57                 prgname,
  58                 "-c", coremask,
  59                 "--proc-type=secondary",
  60                 prefix
  61         };
  62
  63         snprintf(coremask, sizeof(coremask), "%x", (1 << lcore));
  64
  65         return launch_proc(argv);
  66 }
  67
  68 static void
  69 handle_expired_timer(struct rte_timer *tim)
  70 {
  71         struct test_info *test_info = tim->arg;
  72
  73         test_info->expired_count++;
  74         test_info->expired_timers[test_info->expired_timers_idx++] = tim;
  75 }
  76
  77 static int
  78 timer_manage_loop(void *arg)
  79 {
  80 #define TICK_MSECS 1
  81         uint64_t tick_cycles = TICK_MSECS * rte_get_timer_hz() / MSECPERSEC;
  82         uint64_t prev_tsc = 0, cur_tsc, diff_tsc;
  83         struct test_info *test_info = arg;
  84
  85         while (!test_info->exit_flag) {
  86                 cur_tsc = rte_rdtsc();
  87                 diff_tsc = cur_tsc - prev_tsc;
  88
  89                 if (diff_tsc > tick_cycles) {
  90                         /* Scan timer list for expired timers */
  91                         rte_timer_alt_manage(test_info->timer_data_id,
  92                                              NULL,
  93                                              0,
  94                                              handle_expired_timer);
  95
  96                         /* Return expired timer objects back to mempool */
  97                         rte_mempool_put_bulk(test_info->tim_mempool,
  98                                              (void **)test_info->expired_timers,
  99                                              test_info->expired_timers_idx);
 100
 101                         test_info->expired_timers_idx = 0;
 102
 103                         prev_tsc = cur_tsc;
 104                 }
 105
 106                 rte_pause();
 107         }
 108
 109         return 0;
 110 }
 111
 112 int
 113 test_timer_secondary(void)
 114 {
 115         int proc_type = rte_eal_process_type();
 116         const struct rte_memzone *mz;
 117         struct test_info *test_info;
 118         int ret;
 119
 120         if (proc_type == RTE_PROC_PRIMARY) {
 121                 if (rte_lcore_count() < NUM_LCORES_NEEDED) {
 122                         printf("Not enough cores for test_timer_secondary, expecting at least %u\n",
 123                                NUM_LCORES_NEEDED);
 124                         return TEST_SKIPPED;
 125                 }
 126
 127                 mz = rte_memzone_reserve(TEST_INFO_MZ_NAME, sizeof(*test_info),
 128                                          SOCKET_ID_ANY, 0);
 129                 test_info = mz->addr;
 130                 TEST_ASSERT_NOT_NULL(test_info, "Couldn't allocate memory for "
 131                                      "test data");
 132
 133                 test_info->tim_mempool = rte_mempool_create("test_timer_mp",
 134                                 NUM_TIMERS, sizeof(struct rte_timer), 0, 0,
 135                                 NULL, NULL, NULL, NULL, rte_socket_id(), 0);
 136
 137                 ret = rte_timer_data_alloc(&test_info->timer_data_id);
 138                 TEST_ASSERT_SUCCESS(ret, "Failed to allocate timer data "
 139                                     "instance");
 140
 141                 unsigned int *mstr_lcorep = &test_info->mstr_lcore;
 142                 unsigned int *mgr_lcorep = &test_info->mgr_lcore;
 143                 unsigned int *sec_lcorep = &test_info->sec_lcore;
 144
 145                 *mstr_lcorep = rte_get_master_lcore();
 146                 *mgr_lcorep = rte_get_next_lcore(*mstr_lcorep, 1, 1);
 147                 *sec_lcorep = rte_get_next_lcore(*mgr_lcorep, 1, 1);
 148
 149                 ret = rte_eal_remote_launch(timer_manage_loop,
 150                                             (void *)test_info,
 151                                             *mgr_lcorep);
 152                 TEST_ASSERT_SUCCESS(ret, "Failed to launch timer manage loop");
 153
 154                 ret = timer_secondary_spawn_wait(*sec_lcorep);
 155                 TEST_ASSERT_SUCCESS(ret, "Secondary process execution failed");
 156
 157                 rte_delay_ms(2000);
 158
 159                 test_info->exit_flag = 1;
 160                 rte_eal_wait_lcore(*mgr_lcorep);
 161
 162 #ifdef RTE_LIBRTE_TIMER_DEBUG
 163                 rte_timer_alt_dump_stats(test_info->timer_data_id, stdout);
 164 #endif
 165
 166                 return test_info->expected_count == test_info->expired_count ?
 167                         TEST_SUCCESS : TEST_FAILED;
 168
 169         } else if (proc_type == RTE_PROC_SECONDARY) {
 170                 uint64_t ticks, timeout_ms;
 171                 struct rte_timer *tim;
 172                 int i;
 173
 174                 mz = rte_memzone_lookup(TEST_INFO_MZ_NAME);
 175                 test_info = mz->addr;
 176                 TEST_ASSERT_NOT_NULL(test_info, "Couldn't lookup memzone for "
 177                                      "test info");
 178
 179                 for (i = 0; i < NUM_TIMERS; i++) {
 180                         rte_mempool_get(test_info->tim_mempool, (void **)&tim);
 181
 182                         rte_timer_init(tim);
 183
 184                         /* generate timeouts between 10 and 160 ms */
 185                         timeout_ms = ((rte_rand() & 0xF) + 1) * 10;
 186                         ticks = timeout_ms * rte_get_timer_hz() / MSECPERSEC;
 187
 188                         ret = rte_timer_alt_reset(test_info->timer_data_id,
 189                                                   tim, ticks, SINGLE,
 190                                                   test_info->mgr_lcore, NULL,
 191                                                   test_info);
 192                         if (ret < 0)
 193                                 return TEST_FAILED;
 194
 195                         test_info->expected_count++;
 196
 197                         /* randomly leave timer running or stop it */
 198                         if (rte_rand() & 1)
 199                                 continue;
 200
 201                         ret = rte_timer_alt_stop(test_info->timer_data_id,
 202                                                  tim);
 203                         if (ret == 0) {
 204                                 test_info->expected_count--;
 205                                 rte_mempool_put(test_info->tim_mempool,
 206                                                 (void *)tim);
 207                         }
 208
 209                 }
 210
 211                 return TEST_SUCCESS;
 212         }
 213
 214         return TEST_FAILED;
 215 }
 216
 217 REGISTER_TEST_COMMAND(timer_secondary_autotest, test_timer_secondary);