netdev - Re: [PATCH net v3] net: ethtool: do runtime PM outside RTNL

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Message-ID: <20231207094021.1419b5d0@kernel.org>
Date: Thu, 7 Dec 2023 09:40:21 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Przemek Kitszel <przemyslaw.kitszel@...el.com>
Cc: Johannes Berg <johannes@...solutions.net>, <netdev@...r.kernel.org>,
 Heiner Kallweit <hkallweit1@...il.com>, "Marc MERLIN" <marc@...lins.org>,
 "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>
Subject: Re: [PATCH net v3] net: ethtool: do runtime PM outside RTNL

On Thu, 7 Dec 2023 11:16:10 +0100 Przemek Kitszel wrote:
> I have let know our igc TL, architect, and anybody that could be
> interested via cc: IWL. And I'm happy that this could be done at
> relaxed pace thanks to Johannes

I think you may be expecting us to take Johannes's patch.
It's still on the table, but to make things clear -
upstream we prefer to wait for the "real fix", so if we agree
that fixing igb/igc is a better way (as Heiner pointed out on previous
version PM functions are called by the stack under rtnl elsewhere too,
just not while device is open) - we'll wait for that. Especially
that I'm 80% I complained about the PM in those drivers in
the past and nobody seemed to care. It's a constant source of rtnl
deadlocks.