app/eventdev: fix divide by zero

Fix possible divide by zero condition when calculating percentages.

Coverity issue: 277205
Coverity issue: 277234
Fixes: d008f20bce23 ("app/eventdev: add event timer adapter as a producer")
Cc: stable@dpdk.org
Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>

diff --git a/app/test-eventdev/test_perf_common.c b/app/test-eventdev/test_perf_common.c
index e7cf75a..b3af4bf 100644 (file)
--- a/app/test-eventdev/test_perf_common.c
+++ b/app/test-eventdev/test_perf_common.c
@@ -133,8 +133,9 @@ perf_event_timer_producer(void *arg)
        fflush(stdout);
        rte_delay_ms(1000);
        printf("%s(): lcore %d Average event timer arm latency = %.3f us\n",
-                       __func__, rte_lcore_id(), (float)(arm_latency / count) /
-                       (rte_get_timer_hz() / 1000000));
+                       __func__, rte_lcore_id(),
+                       count ? (float)(arm_latency / count) /
+                       (rte_get_timer_hz() / 1000000) : 0);
        return 0;
 }
 
@@ -194,8 +195,9 @@ perf_event_timer_producer_burst(void *arg)
        fflush(stdout);
        rte_delay_ms(1000);
        printf("%s(): lcore %d Average event timer arm latency = %.3f us\n",
-                       __func__, rte_lcore_id(), (float)(arm_latency / count) /
-                       (rte_get_timer_hz() / 1000000));
+                       __func__, rte_lcore_id(),
+                       count ? (float)(arm_latency / count) /
+                       (rte_get_timer_hz() / 1000000) : 0);
        return 0;
 }