[dpdk-stable] [dpdk-dev] [PATCH 1/2] app/test-eventdev: fix possible divide by zero

[Jerin Jacob]

On Fri, Nov 22, 2019 at 4:22 AM <pbhagavatula at marvell.com> wrote:
>
> From: Pavan Nikhilesh <pbhagavatula at marvell.com>
>
> 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 at dpdk.org
>
> Signed-off-by: Pavan Nikhilesh <pbhagavatula at marvell.com>



Applied to dpdk-next-eventdev/master. Thanks.



> ---
>  app/test-eventdev/test_perf_common.c | 10 ++++++----
>  1 file changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/app/test-eventdev/test_perf_common.c b/app/test-eventdev/test_perf_common.c
> index e7cf75a7d..b3af4bfec 100644
> --- 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;
>  }
>
> --
> 2.17.1
>