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