linux-kernel - Re: [PATCH v6 net-next] net: hyperv: Add attributes to show TX indirection table

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Message-ID: <alpine.LRH.2.23.451.2007221641040.99377@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.inter>
Date:   Wed, 22 Jul 2020 16:42:30 -0700 (PDT)
From:   Chi Song <chisong@...ux.microsoft.com>
To:     Florian Fainelli <f.fainelli@...il.com>
cc:     Jakub Kicinski <kuba@...nel.org>,
        Chi Song <Song.Chi@...rosoft.com>,
        Stephen Hemminger <stephen@...workplumber.org>,
        David Miller <davem@...emloft.net>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        KY Srinivasan <kys@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        "wei.liu@...nel.org" <wei.liu@...nel.org>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v6 net-next] net: hyperv: Add attributes to show TX
 indirection table



On Tue, 21 Jul 2020, Florian Fainelli wrote:

> On 7/21/20 12:21 PM, Jakub Kicinski wrote:
> > On Tue, 21 Jul 2020 04:58:59 +0000 Chi Song wrote:
> >> An imbalanced TX indirection table causes netvsc to have low
> >> performance. This table is created and managed during runtime. To help
> >> better diagnose performance issues caused by imbalanced tables, add
> >> device attributes to show the content of TX indirection tables.
> >>
> >> Signed-off-by: Chi Song <chisong@...rosoft.com>
> >
> > Sorry for waiting until v6 but sysfs feel like a very strange place to
> > expose this. Especially under the netdev, not the bus device.
> >
> > This looks like device specific state, perhaps ethtool -d is a more
> > appropriate place?
>
> Agreed, or a devlink resource maybe?

Thank you for comments, I will move it to ethtool.