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 16:50:48 +0300 [thread overview]
Message-ID: <040e1bb1-dc45-7dff-ee60-e9d82d4ae027@oktetlabs.ru> (raw)
In-Reply-To: <efc6dbd2-51ef-6df3-cb14-da284ab50768@oktetlabs.ru>
On 9/30/21 4:45 PM, Andrew Rybchenko wrote:
> 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
Sorry "I'm NOT going to ..."
> 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 13:50 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
2021-09-30 13:50 ` Andrew Rybchenko [this message]
2021-10-14 22:16 ` Ferruh Yigit
2021-10-14 22:19 ` [dpdk-stable] " Ferruh Yigit
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