DPDK patches and discussions
 help / color / mirror / Atom feed
From: <pbhagavatula@marvell.com>
To: <jerinj@marvell.com>, Erik Gabriel Carrillo <erik.g.carrillo@intel.com>
Cc: <dev@dpdk.org>, Pavan Nikhilesh <pbhagavatula@marvell.com>,
	<stable@dpdk.org>
Subject: [dpdk-dev] [PATCH] test/event: fix timeout accuracy
Date: Sun, 7 Mar 2021 01:56:58 +0530	[thread overview]
Message-ID: <20210306202659.9091-1-pbhagavatula@marvell.com> (raw)

From: Pavan Nikhilesh <pbhagavatula@marvell.com>

Round timeout ticks when converting from nanoseconds, this prevents
loss of accuracy and deviation from requested timeout value.

Fixes: d1f3385d0076 ("test: add event timer adapter auto-test")
Cc: stable@dpdk.org

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
---
 app/test/test_event_timer_adapter.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/app/test/test_event_timer_adapter.c b/app/test/test_event_timer_adapter.c
index ad3f4dcc2..b536ddef4 100644
--- a/app/test/test_event_timer_adapter.c
+++ b/app/test/test_event_timer_adapter.c
@@ -3,6 +3,8 @@
  * Copyright(c) 2017-2018 Intel Corporation.
  */
 
+#include <math.h>
+
 #include <rte_atomic.h>
 #include <rte_common.h>
 #include <rte_cycles.h>
@@ -46,7 +48,7 @@ static uint64_t global_info_bkt_tck_ns;
 static volatile uint8_t arm_done;
 
 #define CALC_TICKS(tks)					\
-	((tks * global_bkt_tck_ns) / global_info_bkt_tck_ns)
+	ceil((double)(tks * global_bkt_tck_ns) / global_info_bkt_tck_ns)
 
 
 static bool using_services;
-- 
2.17.1


             reply	other threads:[~2021-03-06 20:27 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-06 20:26 pbhagavatula [this message]
2021-03-08 17:20 ` Carrillo, Erik G
2021-03-08 18:09   ` Jerin Jacob
2021-03-16 11:46   ` Pavan Nikhilesh Bhagavatula

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210306202659.9091-1-pbhagavatula@marvell.com \
    --to=pbhagavatula@marvell.com \
    --cc=dev@dpdk.org \
    --cc=erik.g.carrillo@intel.com \
    --cc=jerinj@marvell.com \
    --cc=stable@dpdk.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).