examples: work only on defined lcores

[dpdk.git] / examples / link_status_interrupt / main.c

diff --git a/examples/link_status_interrupt/main.c b/examples/link_status_interrupt/main.c
index 3b85399..d9a811b 100644 (file)
--- a/examples/link_status_interrupt/main.c
+++ b/examples/link_status_interrupt/main.c
@@ -99,7 +99,7 @@
 #define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */
 
 #define MAX_PKT_BURST 32
-#define BURST_TX_DRAIN 200000ULL /* around 100us at 2 Ghz */
+#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 
 /*
  * Configurable number of RX/TX ring descriptors
@@ -317,11 +317,12 @@ lsi_main_loop(void)
        struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
        struct rte_mbuf *m;
        unsigned lcore_id;
-       uint64_t prev_tsc = 0;
-       uint64_t diff_tsc, cur_tsc, timer_tsc;
+       uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
        unsigned i, j, portid, nb_rx;
        struct lcore_queue_conf *qconf;
+       const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 
+       prev_tsc = 0;
        timer_tsc = 0;
 
        lcore_id = rte_lcore_id();
@@ -329,7 +330,7 @@ lsi_main_loop(void)
 
        if (qconf->n_rx_port == 0) {
                RTE_LOG(INFO, LSI, "lcore %u has nothing to do\n", lcore_id);
-               while(1);
+               return;
        }
 
        RTE_LOG(INFO, LSI, "entering main loop on lcore %u\n", lcore_id);
@@ -349,7 +350,7 @@ lsi_main_loop(void)
                 * TX burst queue drain
                 */
                diff_tsc = cur_tsc - prev_tsc;
-               if (unlikely(diff_tsc > BURST_TX_DRAIN)) {
+               if (unlikely(diff_tsc > drain_tsc)) {
 
                        /* this could be optimized (use queueid instead of
                         * portid), but it is not called so often */