From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by dpdk.org (Postfix) with ESMTP id 1C78D5F0D for ; Fri, 8 Jun 2018 11:57:39 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 Jun 2018 02:57:38 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,490,1520924400"; d="scan'208";a="206373292" Received: from irvmail001.ir.intel.com ([163.33.26.43]) by orsmga004.jf.intel.com with ESMTP; 08 Jun 2018 02:57:37 -0700 Received: from sivswdev01.ir.intel.com (sivswdev01.ir.intel.com [10.237.217.45]) by irvmail001.ir.intel.com (8.14.3/8.13.6/MailSET/Hub) with ESMTP id w589vbep028840; Fri, 8 Jun 2018 10:57:37 +0100 Received: from sivswdev01.ir.intel.com (localhost [127.0.0.1]) by sivswdev01.ir.intel.com with ESMTP id w589vaqS003791; Fri, 8 Jun 2018 10:57:36 +0100 Received: (from lma25@localhost) by sivswdev01.ir.intel.com with LOCAL id w589vaBs003787; Fri, 8 Jun 2018 10:57:36 +0100 From: Liang Ma To: david.hunt@intel.com Cc: dev@dpdk.org, radu.nicolau@intel.com, Liang Ma Date: Fri, 8 Jun 2018 10:57:13 +0100 Message-Id: <1528451833-3617-2-git-send-email-liang.j.ma@intel.com> X-Mailer: git-send-email 1.7.7.4 In-Reply-To: <1528451833-3617-1-git-send-email-liang.j.ma@intel.com> References: <1528451833-3617-1-git-send-email-liang.j.ma@intel.com> Subject: [dpdk-dev] [PATCH v1 2/2] examples/l3fwd-power: simple app update to support new API X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 08 Jun 2018 09:57:40 -0000 Add the support for new traffic pattern aware power control power management API. Example: ./l3fwd-power -l xxx -n 4 -w 0000:xx:00.0 -w 0000:xx:00.1 -- -p 0x3 -P --config="(0,0,xx),(1,0,xx)" --empty-poll Signed-off-by: Liang Ma --- examples/l3fwd-power/main.c | 229 ++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 211 insertions(+), 18 deletions(-) diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c index 596d645..22a0e4e 100644 --- a/examples/l3fwd-power/main.c +++ b/examples/l3fwd-power/main.c @@ -43,6 +43,7 @@ #include #include #include +#include #define RTE_LOGTYPE_L3FWD_POWER RTE_LOGTYPE_USER1 @@ -129,6 +130,9 @@ static uint32_t enabled_port_mask = 0; static int promiscuous_on = 0; /* NUMA is enabled by default. */ static int numa_on = 1; +/* emptypoll is disabled by default. */ +static bool empty_poll_on; +volatile bool empty_poll_stop; static int parse_ptype; /**< Parse packet type using rx callback, and */ /**< disabled by default */ @@ -336,6 +340,10 @@ static inline uint32_t power_idle_heuristic(uint32_t zero_rx_packet_count); static inline enum freq_scale_hint_t power_freq_scaleup_heuristic( \ unsigned int lcore_id, uint16_t port_id, uint16_t queue_id); +static int is_done(void) +{ + return empty_poll_stop; +} /* exit signal handler */ static void signal_exit_now(int sigtype) @@ -344,7 +352,15 @@ signal_exit_now(int sigtype) unsigned int portid; int ret; + RTE_SET_USED(lcore_id); + RTE_SET_USED(portid); + RTE_SET_USED(ret); + if (sigtype == SIGINT) { + if (empty_poll_on) + empty_poll_stop = true; + + for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) { if (rte_lcore_is_enabled(lcore_id) == 0) continue; @@ -353,20 +369,23 @@ signal_exit_now(int sigtype) ret = rte_power_exit(lcore_id); if (ret) rte_exit(EXIT_FAILURE, "Power management " - "library de-initialization failed on " - "core%u\n", lcore_id); + "library de-initialization failed on " + "core%u\n", lcore_id); } - RTE_ETH_FOREACH_DEV(portid) { - if ((enabled_port_mask & (1 << portid)) == 0) - continue; + if (!empty_poll_on) { + RTE_ETH_FOREACH_DEV(portid) { + if ((enabled_port_mask & (1 << portid)) == 0) + continue; - rte_eth_dev_stop(portid); - rte_eth_dev_close(portid); + rte_eth_dev_stop(portid); + rte_eth_dev_close(portid); + } } } - rte_exit(EXIT_SUCCESS, "User forced exit\n"); + if (!empty_poll_on) + rte_exit(EXIT_SUCCESS, "User forced exit\n"); } /* Freqency scale down timer callback */ @@ -831,6 +850,108 @@ static int event_register(struct lcore_conf *qconf) return 0; } +/* main processing loop */ +static int +main_empty_poll_loop(__attribute__((unused)) void *dummy) +{ + struct rte_mbuf *pkts_burst[MAX_PKT_BURST]; + unsigned int lcore_id; + uint64_t prev_tsc, diff_tsc, cur_tsc; + int i, j, nb_rx; + uint8_t queueid; + uint16_t portid; + struct lcore_conf *qconf; + struct lcore_rx_queue *rx_queue; + + const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US; + + prev_tsc = 0; + + lcore_id = rte_lcore_id(); + qconf = &lcore_conf[lcore_id]; + + if (qconf->n_rx_queue == 0) { + RTE_LOG(INFO, L3FWD_POWER, "lcore %u has nothing to do\n", lcore_id); + return 0; + } + + RTE_LOG(INFO, L3FWD_POWER, "entering main empty_poll loop on lcore %u\n", lcore_id); + + for (i = 0; i < qconf->n_rx_queue; i++) { + portid = qconf->rx_queue_list[i].port_id; + queueid = qconf->rx_queue_list[i].queue_id; + RTE_LOG(INFO, L3FWD_POWER, " -- lcoreid=%u portid=%u " + "rxqueueid=%hhu\n", lcore_id, portid, queueid); + } + + while (!is_done()) { + stats[lcore_id].nb_iteration_looped++; + + cur_tsc = rte_rdtsc(); + /* + * TX burst queue drain + */ + diff_tsc = cur_tsc - prev_tsc; + if (unlikely(diff_tsc > drain_tsc)) { + for (i = 0; i < qconf->n_tx_port; ++i) { + portid = qconf->tx_port_id[i]; + rte_eth_tx_buffer_flush(portid, + qconf->tx_queue_id[portid], + qconf->tx_buffer[portid]); + } + prev_tsc = cur_tsc; + } + + /* + * Read packet from RX queues + */ + for (i = 0; i < qconf->n_rx_queue; ++i) { + rx_queue = &(qconf->rx_queue_list[i]); + rx_queue->idle_hint = 0; + portid = rx_queue->port_id; + queueid = rx_queue->queue_id; + + nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst, + MAX_PKT_BURST); + + stats[lcore_id].nb_rx_processed += nb_rx; + + if (nb_rx == 0) { + + rte_empty_poll_stat_update(lcore_id); + + continue; + } else { + rte_poll_stat_update(lcore_id, nb_rx); + } + + + /* Prefetch first packets */ + for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) { + rte_prefetch0(rte_pktmbuf_mtod( + pkts_burst[j], void *)); + } + + /* Prefetch and forward already prefetched packets */ + for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) { + rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[ + j + PREFETCH_OFFSET], void *)); + l3fwd_simple_forward(pkts_burst[j], portid, + qconf); + } + + /* Forward remaining prefetched packets */ + for (; j < nb_rx; j++) { + l3fwd_simple_forward(pkts_burst[j], portid, + qconf); + } + + } + + } + + return 0; +} /* main processing loop */ static int @@ -1128,7 +1249,8 @@ print_usage(const char *prgname) " --no-numa: optional, disable numa awareness\n" " --enable-jumbo: enable jumbo frame" " which max packet len is PKTLEN in decimal (64-9600)\n" - " --parse-ptype: parse packet type by software\n", + " --parse-ptype: parse packet type by software\n" + " --empty=poll: enable empty poll detection\n", prgname); } @@ -1231,10 +1353,12 @@ parse_args(int argc, char **argv) int opt, ret; char **argvopt; int option_index; + uint32_t limit; char *prgname = argv[0]; static struct option lgopts[] = { {"config", 1, 0, 0}, {"no-numa", 0, 0, 0}, + {"empty-poll", 0, 0, 0}, {"enable-jumbo", 0, 0, 0}, {CMD_LINE_OPT_PARSE_PTYPE, 0, 0, 0}, {NULL, 0, 0, 0} @@ -1259,7 +1383,18 @@ parse_args(int argc, char **argv) printf("Promiscuous mode selected\n"); promiscuous_on = 1; break; - + case 'l': + limit = parse_portmask(optarg); + rte_empty_poll_set_freq(LOW, limit); + break; + case 'm': + limit = parse_portmask(optarg); + rte_empty_poll_set_freq(MED, limit); + break; + case 'h': + limit = parse_portmask(optarg); + rte_empty_poll_set_freq(HGH, limit); + break; /* long options */ case 0: if (!strncmp(lgopts[option_index].name, "config", 6)) { @@ -1278,6 +1413,12 @@ parse_args(int argc, char **argv) } if (!strncmp(lgopts[option_index].name, + "empty-poll", 10)) { + printf("empty-poll is enabled\n"); + empty_poll_on = true; + } + + if (!strncmp(lgopts[option_index].name, "enable-jumbo", 12)) { struct option lenopts = {"max-pkt-len", required_argument, \ @@ -1609,6 +1750,41 @@ static int check_ptype(uint16_t portid) } +static int +launch_timer(unsigned int lcore_id) +{ + int64_t prev_tsc = 0, cur_tsc, diff_tsc, cycles_10ms; + + RTE_SET_USED(lcore_id); + + + if (rte_get_master_lcore() != lcore_id) { + rte_panic("timer on lcore:%d which is not master core:%d\n", + lcore_id, + rte_get_master_lcore()); + } + + RTE_LOG(INFO, POWER, "Bring up the Timer\n"); + + rte_empty_poll_setup_timer(); + + cycles_10ms = rte_get_timer_hz() / 100; + + while (!is_done()) { + cur_tsc = rte_rdtsc(); + diff_tsc = cur_tsc - prev_tsc; + if (diff_tsc > cycles_10ms) { + rte_timer_manage(); + prev_tsc = cur_tsc; + cycles_10ms = rte_get_timer_hz() / 100; + } + } + + RTE_LOG(INFO, POWER, "Timer_subsystem is done\n"); + + return 0; +} + int main(int argc, char **argv) { @@ -1780,14 +1956,15 @@ main(int argc, char **argv) "Library initialization failed on core %u\n", lcore_id); /* init timer structures for each enabled lcore */ - rte_timer_init(&power_timers[lcore_id]); - hz = rte_get_timer_hz(); - rte_timer_reset(&power_timers[lcore_id], - hz/TIMER_NUMBER_PER_SECOND, SINGLE, lcore_id, - power_timer_cb, NULL); - + if (empty_poll_on == false) { + rte_timer_init(&power_timers[lcore_id]); + hz = rte_get_timer_hz(); + rte_timer_reset(&power_timers[lcore_id], + hz/TIMER_NUMBER_PER_SECOND, SINGLE, lcore_id, + power_timer_cb, NULL); + } qconf = &lcore_conf[lcore_id]; - printf("\nInitializing rx queues on lcore %u ... ", lcore_id ); + printf("\nInitializing rx queues on lcore %u ...\n", lcore_id); fflush(stdout); /* init RX queues */ for(queue = 0; queue < qconf->n_rx_queue; ++queue) { @@ -1856,12 +2033,28 @@ main(int argc, char **argv) check_all_ports_link_status(enabled_port_mask); + if (empty_poll_on == true) + rte_empty_poll_stat_init(); + + /* launch per-lcore init on every lcore */ - rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER); + if (empty_poll_on == false) { + rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER); + } else { + empty_poll_stop = false; + rte_eal_mp_remote_launch(main_empty_poll_loop, NULL, SKIP_MASTER); + } + + if (empty_poll_on == true) + launch_timer(rte_lcore_id()); + RTE_LCORE_FOREACH_SLAVE(lcore_id) { if (rte_eal_wait_lcore(lcore_id) < 0) return -1; } + if (empty_poll_on) + rte_empty_poll_stat_free(); + return 0; } -- 2.7.5