netdev - Re: [PATCH RFC/RFT 0/2] W=1 by default for Ethernet PHY subsystem

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Date:   Wed, 10 Feb 2021 10:43:29 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Jason Gunthorpe <jgg@...dia.com>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Nathan Chancellor <nathan@...nel.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        netdev <netdev@...r.kernel.org>,
        David Miller <davem@...emloft.net>,
        "Michal Marek" <michal.lkml@...kovi.net>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>
Subject: Re: [PATCH RFC/RFT 0/2] W=1 by default for Ethernet PHY subsystem

On Wed, 10 Feb 2021 14:39:17 -0400 Jason Gunthorpe wrote:
> On Sun, Sep 20, 2020 at 04:53:51PM +0200, Andrew Lunn wrote:
> 
> > How often are new W=1 flags added? My patch exported
> > KBUILD_CFLAGS_WARN1. How about instead we export
> > KBUILD_CFLAGS_WARN1_20200920. A subsystem can then sign up to being
> > W=1 clean as for the 20200920 definition of W=1.  
> 
> I think this is a reasonable idea.
> 
> I'm hitting exactly the issue this series is trying to solve, Lee
> invested a lot of effort to make drivers/infiniband/ W=1 clean, but
> as maintainer I can't sustain this since there is no easy way to have
> a warning free compile and get all extra warnings.  Also all my
> submitters are not running with W=1
> 
> I need kbuild to get everyone on the same page to be able to sustain
> the warning clean up. We've already had a regression and it has only
> been a few weeks :(

Do you use patchwork? A little bit of automation is all you need,
really. kbuild bot is too slow, anyway.

> Andrew, would you consider respinning this series in the above form?