From: Stephen Hemminger <stephen@networkplumber.org>
To: dev@dpdk.org
Cc: Stephen Hemminger <stephen@networkplumber.org>,
Cristian Dumitrescu <cristian.dumitrescu@intel.com>,
Jasvinder Singh <jasvinder.singh@intel.com>,
Wojciech Liguzinski <wojciechx.liguzinski@intel.com>
Subject: [PATCH v5 2/3] rte_pie: remove unnecessary floating point
Date: Thu, 26 May 2022 13:26:52 -0700 [thread overview]
Message-ID: <20220526202653.99796-3-stephen@networkplumber.org> (raw)
In-Reply-To: <20220526202653.99796-1-stephen@networkplumber.org>
The qdelay variable is derived from and compared to 64 bit
value so it doesn't have to be floating point.
Fixes: 44c730b0e379 ("sched: add PIE based congestion management")
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
lib/sched/rte_pie.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/sched/rte_pie.h b/lib/sched/rte_pie.h
index 02a987f54ad1..3e2c1ef46721 100644
--- a/lib/sched/rte_pie.h
+++ b/lib/sched/rte_pie.h
@@ -218,7 +218,7 @@ _rte_pie_drop(const struct rte_pie_config *pie_cfg,
struct rte_pie *pie)
{
uint64_t rand_value;
- double qdelay = pie_cfg->qdelay_ref * 0.5;
+ uint64_t qdelay = pie_cfg->qdelay_ref / 2;
/* PIE is active but the queue is not congested: return 0 */
if (((pie->qdelay_old < qdelay) && (pie->drop_prob < 0.2)) ||
--
2.35.1
next prev parent reply other threads:[~2022-05-26 20:27 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-24 18:46 [RFT 0/2] pie: floating point fixes Stephen Hemminger
2022-05-24 18:46 ` [RFT 1/2] rte_pie: remove unnecessary floating point Stephen Hemminger
2022-05-24 18:46 ` [RFT 2/2] rte_pie: fix incorrect floating point math Stephen Hemminger
2022-05-24 19:31 ` [RFT 0/2] pie: floating point fixes Morten Brørup
2022-05-24 22:18 ` [RFT v2 0/3] pie: fix random number issues Stephen Hemminger
2022-05-24 22:18 ` [RFT v2 1/3] random: add rte_rand_float() Stephen Hemminger
2022-05-25 11:55 ` Ray Kinsella
2022-05-25 14:45 ` Mattias Rönnblom
2022-05-25 15:26 ` Morten Brørup
2022-05-25 15:45 ` Stephen Hemminger
2022-05-25 15:47 ` Stephen Hemminger
2022-05-24 22:18 ` [RFT v2 2/3] rte_pie: remove unnecessary floating point Stephen Hemminger
2022-05-24 22:18 ` [RFT v2 3/3] rte_pie: fix incorrect floating point math Stephen Hemminger
2022-05-25 17:12 ` [PATCH v3 0/3] introduce random floating point function Stephen Hemminger
2022-05-25 17:12 ` [PATCH v3 1/3] random: add rte_drand() funciton Stephen Hemminger
2022-05-25 17:12 ` [PATCH v3 2/3] rte_pie: remove unnecessary floating point Stephen Hemminger
2022-05-25 17:12 ` [PATCH v3 3/3] rte_pie: fix incorrect floating point math Stephen Hemminger
2022-05-25 20:31 ` [PATCH v4 0/3] introduce random floating point function Stephen Hemminger
2022-05-25 20:31 ` [PATCH v4 1/3] random: add rte_drand() function Stephen Hemminger
2022-05-26 9:56 ` Ray Kinsella
2022-05-26 13:20 ` Mattias Rönnblom
2022-05-26 15:25 ` Stephen Hemminger
2022-05-26 15:28 ` Stephen Hemminger
2022-05-26 20:19 ` Stephen Hemminger
2022-05-25 20:31 ` [PATCH v4 2/3] rte_pie: remove unnecessary floating point Stephen Hemminger
2022-05-25 20:31 ` [PATCH v4 3/3] rte_pie: fix incorrect floating point math Stephen Hemminger
2022-05-26 7:06 ` [PATCH v4 0/3] introduce random floating point function Morten Brørup
2022-05-26 20:26 ` [PATCH v5 " Stephen Hemminger
2022-05-26 20:26 ` [PATCH v5 1/3] random: add rte_drand() function Stephen Hemminger
2022-05-26 20:26 ` Stephen Hemminger [this message]
2022-05-30 11:50 ` [PATCH v5 2/3] rte_pie: remove unnecessary floating point Dumitrescu, Cristian
2022-06-21 8:18 ` Singh, Jasvinder
2022-05-26 20:26 ` [PATCH v5 3/3] rte_pie: fix incorrect floating point math Stephen Hemminger
2022-05-30 11:50 ` Dumitrescu, Cristian
2022-06-21 8:18 ` Singh, Jasvinder
2022-06-22 9:21 ` [PATCH v5 0/3] introduce random floating point function Thomas Monjalon
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