From: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
To: Ferruh Yigit <ferruh.yigit@intel.com>,
Stephen Hemminger <stephen@networkplumber.org>
Cc: Rasesh Mody <rmody@marvell.com>,
Shahed Shaikh <shshaikh@marvell.com>,
Hemant Agrawal <hemant.agrawal@nxp.com>,
Sachin Saxena <sachin.saxena@oss.nxp.com>,
Haiyue Wang <haiyue.wang@intel.com>,
Gagandeep Singh <g.singh@nxp.com>,
John Daley <johndale@cisco.com>,
Hyong Youb Kim <hyonkim@cisco.com>,
Beilei Xing <beilei.xing@intel.com>,
Jingjing Wu <jingjing.wu@intel.com>,
Qiming Yang <qiming.yang@intel.com>,
Qi Zhang <qi.z.zhang@intel.com>,
Shijith Thotton <sthotton@marvell.com>,
Srisivasubramanian Srinivasan <srinivasan@marvell.com>,
Zyta Szpak <zr@semihalf.com>, Liron Himi <lironh@marvell.com>,
Harman Kalra <hkalra@marvell.com>,
Xiao Wang <xiao.w.wang@intel.com>,
Thomas Monjalon <thomas@monjalon.net>,
dev@dpdk.org, stable@dpdk.org
Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH v2] drivers/net: remove queue xstats auto-fill flag
Date: Thu, 30 Sep 2021 16:45:00 +0300 [thread overview]
Message-ID: <efc6dbd2-51ef-6df3-cb14-da284ab50768@oktetlabs.ru> (raw)
In-Reply-To: <4b39a7ed-2367-b3f2-10d6-6f3d5fc719be@intel.com>
On 9/30/21 4:00 PM, Ferruh Yigit wrote:
> On 9/29/2021 7:38 AM, Andrew Rybchenko wrote:
>> On 9/28/21 8:10 PM, Stephen Hemminger wrote:
>>> On Tue, 28 Sep 2021 19:48:54 +0300
>>> Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru> wrote:
>>>
>>>> Some drivers do not provide per-queue statistics. So, there is no point
>>>> to have these misleading zeros in xstats.
>>>>
>>>> Fixes: f30e69b41f94 ("ethdev: add device flag to bypass auto-filled queue xstats")
>>>> Cc: stable@dpdk.org
>>>>
>>>> Signed-off-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
>>> Really?
>>> It is useful to have zeros rather than random data there.
>>
>> I guess there is a misunderstanding here. Auto-filling xstats is
>> an addition of per-queue basic statistics to xstats by ethdev
>> layer. It makes sense to do it if and only if there is some
>> sensible data there.
>>
>> There is a related deprecation notice saying that per-queue
>> stats should be removed from basic stats since per-queue
>> stats should be provided by xstats API natively.
>>
>> Basically RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS means
>> that corresponding driver is not ready vs the deprecation notice.
>> So, I want to clean it up to see not yet ready drivers only.
>>
>
> As you said, 'RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS' flag set by driver means,
> driver is not ready on representing queue stats in xstats and ethdev layer is
> filling it automatically from basic stats.
>
> First we should wait for drivers to implement it, later clean queue stats from
> basic stats and remove the flag.
>
> I am not sure if we can remove the deprecation notice in this release, but agree
> to add a deadline for the drivers, which can be 22.11.
>
I'm going to cleanup deprecation. I don't touch it in the
patch. I just want to cleanup list of drivers which
require attention/changes. Drivers covered here do not
provide per-queue stats in basic stats. So, there is no
point to set the flag to show it in xstats.
next prev parent reply other threads:[~2021-09-30 13:45 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-28 14:16 [dpdk-stable] [PATCH] net/sfc: " Andrew Rybchenko
2021-09-28 16:48 ` [dpdk-stable] [PATCH v2] drivers/net: " Andrew Rybchenko
2021-09-28 17:10 ` [dpdk-stable] [dpdk-dev] " Stephen Hemminger
2021-09-29 6:38 ` Andrew Rybchenko
2021-09-30 13:00 ` Ferruh Yigit
2021-09-30 13:45 ` Andrew Rybchenko [this message]
2021-09-30 13:50 ` Andrew Rybchenko
2021-10-14 22:16 ` Ferruh Yigit
2021-10-14 22:19 ` [dpdk-stable] " Ferruh Yigit
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