diff mbox series

[1/2] app/test-eventdev: fix possible divide by zero

Message ID 20191121192240.12326-1-pbhagavatula@marvell.com (mailing list archive)
State Accepted, archived
Delegated to: Jerin Jacob
Headers
Series [1/2] app/test-eventdev: fix possible divide by zero |

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-compilation success Compile Testing PASS
ci/iol-mellanox-Performance success Performance Testing PASS
ci/Intel-compilation fail Compilation issues

Commit Message

Pavan Nikhilesh Bhagavatula Nov. 21, 2019, 7:22 p.m. UTC 
  From: Pavan Nikhilesh <pbhagavatula@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@dpdk.org

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
---
 app/test-eventdev/test_perf_common.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

--
2.17.1

Comments

Jerin Jacob Nov. 26, 2019, 5:01 a.m. UTC | #1 
On Fri, Nov 22, 2019 at 4:22 AM <pbhagavatula@marvell.com> wrote:
>
> From: Pavan Nikhilesh <pbhagavatula@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@dpdk.org
>
> Signed-off-by: Pavan Nikhilesh <pbhagavatula@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
>
diff mbox series

Patch

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;
 }