app/test-eventdev/test_perf_atq.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2017 Cavium, Inc
   3  */
   4
   5 #include "test_perf_common.h"
   6
   7 /* See http://dpdk.org/doc/guides/tools/testeventdev.html for test details */
   8
   9 static inline int
  10 atq_nb_event_queues(struct evt_options *opt)
  11 {
  12         /* nb_queues = number of producers */
  13         return evt_nr_active_lcores(opt->plcores);
  14 }
  15
  16 static inline __attribute__((always_inline)) void
  17 atq_mark_fwd_latency(struct rte_event *const ev)
  18 {
  19         if (unlikely(ev->sub_event_type == 0)) {
  20                 struct perf_elt *const m = ev->event_ptr;
  21
  22                 m->timestamp = rte_get_timer_cycles();
  23         }
  24 }
  25
  26 static inline __attribute__((always_inline)) void
  27 atq_fwd_event(struct rte_event *const ev, uint8_t *const sched_type_list,
  28                 const uint8_t nb_stages)
  29 {
  30         ev->sub_event_type++;
  31         ev->sched_type = sched_type_list[ev->sub_event_type % nb_stages];
  32         ev->op = RTE_EVENT_OP_FORWARD;
  33         ev->event_type = RTE_EVENT_TYPE_CPU;
  34 }
  35
  36 static int
  37 perf_atq_worker(void *arg, const int enable_fwd_latency)
  38 {
  39         PERF_WORKER_INIT;
  40         struct rte_event ev;
  41
  42         while (t->done == false) {
  43                 uint16_t event = rte_event_dequeue_burst(dev, port, &ev, 1, 0);
  44
  45                 if (enable_fwd_latency)
  46                         rte_prefetch0(ev.event_ptr);
  47
  48                 if (!event) {
  49                         rte_pause();
  50                         continue;
  51                 }
  52
  53                 if (enable_fwd_latency)
  54                 /* first stage in pipeline, mark ts to compute fwd latency */
  55                         atq_mark_fwd_latency(&ev);
  56
  57                 /* last stage in pipeline */
  58                 if (unlikely((ev.sub_event_type % nb_stages) == laststage)) {
  59                         if (enable_fwd_latency)
  60                                 cnt = perf_process_last_stage_latency(pool,
  61                                         &ev, w, bufs, sz, cnt);
  62                         else
  63                                 cnt = perf_process_last_stage(pool, &ev, w,
  64                                          bufs, sz, cnt);
  65                 } else {
  66                         atq_fwd_event(&ev, sched_type_list, nb_stages);
  67                         while (rte_event_enqueue_burst(dev, port, &ev, 1) != 1)
  68                                 rte_pause();
  69                 }
  70         }
  71         return 0;
  72 }
  73
  74 static int
  75 perf_atq_worker_burst(void *arg, const int enable_fwd_latency)
  76 {
  77         PERF_WORKER_INIT;
  78         uint16_t i;
  79         /* +1 to avoid prefetch out of array check */
  80         struct rte_event ev[BURST_SIZE + 1];
  81
  82         while (t->done == false) {
  83                 uint16_t const nb_rx = rte_event_dequeue_burst(dev, port, ev,
  84                                 BURST_SIZE, 0);
  85
  86                 if (!nb_rx) {
  87                         rte_pause();
  88                         continue;
  89                 }
  90
  91                 for (i = 0; i < nb_rx; i++) {
  92                         if (enable_fwd_latency) {
  93                                 rte_prefetch0(ev[i+1].event_ptr);
  94                                 /* first stage in pipeline.
  95                                  * mark time stamp to compute fwd latency
  96                                  */
  97                                 atq_mark_fwd_latency(&ev[i]);
  98                         }
  99                         /* last stage in pipeline */
 100                         if (unlikely((ev[i].sub_event_type % nb_stages)
 101                                                 == laststage)) {
 102                                 if (enable_fwd_latency)
 103                                         cnt = perf_process_last_stage_latency(
 104                                                 pool, &ev[i], w, bufs, sz, cnt);
 105                                 else
 106                                         cnt = perf_process_last_stage(pool,
 107                                                 &ev[i], w, bufs, sz, cnt);
 108
 109                                 ev[i].op = RTE_EVENT_OP_RELEASE;
 110                         } else {
 111                                 atq_fwd_event(&ev[i], sched_type_list,
 112                                                 nb_stages);
 113                         }
 114                 }
 115
 116                 uint16_t enq;
 117
 118                 enq = rte_event_enqueue_burst(dev, port, ev, nb_rx);
 119                 while (enq < nb_rx) {
 120                         enq += rte_event_enqueue_burst(dev, port,
 121                                                         ev + enq, nb_rx - enq);
 122                 }
 123         }
 124         return 0;
 125 }
 126
 127 static int
 128 worker_wrapper(void *arg)
 129 {
 130         struct worker_data *w  = arg;
 131         struct evt_options *opt = w->t->opt;
 132
 133         const bool burst = evt_has_burst_mode(w->dev_id);
 134         const int fwd_latency = opt->fwd_latency;
 135
 136         /* allow compiler to optimize */
 137         if (!burst && !fwd_latency)
 138                 return perf_atq_worker(arg, 0);
 139         else if (!burst && fwd_latency)
 140                 return perf_atq_worker(arg, 1);
 141         else if (burst && !fwd_latency)
 142                 return perf_atq_worker_burst(arg, 0);
 143         else if (burst && fwd_latency)
 144                 return perf_atq_worker_burst(arg, 1);
 145
 146         rte_panic("invalid worker\n");
 147 }
 148
 149 static int
 150 perf_atq_launch_lcores(struct evt_test *test, struct evt_options *opt)
 151 {
 152         return perf_launch_lcores(test, opt, worker_wrapper);
 153 }
 154
 155 static int
 156 perf_atq_eventdev_setup(struct evt_test *test, struct evt_options *opt)
 157 {
 158         int ret;
 159         uint8_t queue;
 160
 161         const struct rte_event_dev_config config = {
 162                         .nb_event_queues = atq_nb_event_queues(opt),
 163                         .nb_event_ports = perf_nb_event_ports(opt),
 164                         .nb_events_limit  = 4096,
 165                         .nb_event_queue_flows = opt->nb_flows,
 166                         .nb_event_port_dequeue_depth = 128,
 167                         .nb_event_port_enqueue_depth = 128,
 168         };
 169
 170         ret = rte_event_dev_configure(opt->dev_id, &config);
 171         if (ret) {
 172                 evt_err("failed to configure eventdev %d", opt->dev_id);
 173                 return ret;
 174         }
 175
 176         struct rte_event_queue_conf q_conf = {
 177                         .priority = RTE_EVENT_DEV_PRIORITY_NORMAL,
 178                         .event_queue_cfg = RTE_EVENT_QUEUE_CFG_ALL_TYPES,
 179                         .nb_atomic_flows = opt->nb_flows,
 180                         .nb_atomic_order_sequences = opt->nb_flows,
 181         };
 182         /* queue configurations */
 183         for (queue = 0; queue < atq_nb_event_queues(opt); queue++) {
 184                 ret = rte_event_queue_setup(opt->dev_id, queue, &q_conf);
 185                 if (ret) {
 186                         evt_err("failed to setup queue=%d", queue);
 187                         return ret;
 188                 }
 189         }
 190
 191         ret = perf_event_dev_port_setup(test, opt, 1 /* stride */,
 192                                         atq_nb_event_queues(opt));
 193         if (ret)
 194                 return ret;
 195
 196         ret = evt_service_setup(opt->dev_id);
 197         if (ret) {
 198                 evt_err("No service lcore found to run event dev.");
 199                 return ret;
 200         }
 201
 202         ret = rte_event_dev_start(opt->dev_id);
 203         if (ret) {
 204                 evt_err("failed to start eventdev %d", opt->dev_id);
 205                 return ret;
 206         }
 207
 208         return 0;
 209 }
 210
 211 static void
 212 perf_atq_opt_dump(struct evt_options *opt)
 213 {
 214         perf_opt_dump(opt, atq_nb_event_queues(opt));
 215 }
 216
 217 static int
 218 perf_atq_opt_check(struct evt_options *opt)
 219 {
 220         return perf_opt_check(opt, atq_nb_event_queues(opt));
 221 }
 222
 223 static bool
 224 perf_atq_capability_check(struct evt_options *opt)
 225 {
 226         struct rte_event_dev_info dev_info;
 227
 228         rte_event_dev_info_get(opt->dev_id, &dev_info);
 229         if (dev_info.max_event_queues < atq_nb_event_queues(opt) ||
 230                         dev_info.max_event_ports < perf_nb_event_ports(opt)) {
 231                 evt_err("not enough eventdev queues=%d/%d or ports=%d/%d",
 232                         atq_nb_event_queues(opt), dev_info.max_event_queues,
 233                         perf_nb_event_ports(opt), dev_info.max_event_ports);
 234         }
 235         if (!evt_has_all_types_queue(opt->dev_id))
 236                 return false;
 237
 238         return true;
 239 }
 240
 241 static const struct evt_test_ops perf_atq =  {
 242         .cap_check          = perf_atq_capability_check,
 243         .opt_check          = perf_atq_opt_check,
 244         .opt_dump           = perf_atq_opt_dump,
 245         .test_setup         = perf_test_setup,
 246         .mempool_setup      = perf_mempool_setup,
 247         .eventdev_setup     = perf_atq_eventdev_setup,
 248         .launch_lcores      = perf_atq_launch_lcores,
 249         .eventdev_destroy   = perf_eventdev_destroy,
 250         .mempool_destroy    = perf_mempool_destroy,
 251         .test_result        = perf_test_result,
 252         .test_destroy       = perf_test_destroy,
 253 };
 254
 255 EVT_TEST_REGISTER(perf_atq);