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 <20221114224315.GA939630@bhelgaas>
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From:   Peter Collingbourne <pcc@google.com>
Date:   Mon, 14 Nov 2022 14:50:16 -0800
Message-ID: <CAMn1gO4_5TiVB2Z=qi8LrBoQOnnxr1sFiwx8f5qPURtH-CjC2Q@mail.gmail.com>
Subject: Re: [PATCH] checkpatch: add warning for non-lore mailing list URLs
To:     Bjorn Helgaas <helgaas@kernel.org>
Cc:     Joe Perches <joe@perches.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Andy Whitcroft <apw@canonical.com>,
        Dwaipayan Ray <dwaipayanray1@gmail.com>,
        Lukas Bulwahn <lukas.bulwahn@gmail.com>,
        Kees Cook <keescook@chromium.org>,
        Randy Dunlap <rdunlap@infradead.org>,
        linux-kernel@vger.kernel.org, Bjorn Helgaas <bhelgaas@google.com>
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On Mon, Nov 14, 2022 at 2:43 PM Bjorn Helgaas <helgaas@kernel.org> wrote:
>
> On Mon, Nov 07, 2022 at 01:00:59PM -0800, Peter Collingbourne wrote:
> > On Mon, Nov 7, 2022 at 12:54 PM Bjorn Helgaas <helgaas@kernel.org> wrote:
> > >
> > > On Thu, Nov 03, 2022 at 06:34:31PM -0700, Peter Collingbourne wrote:
> > > > On Thu, Nov 3, 2022 at 6:27 PM Joe Perches <joe@perches.com> wrote:
> > > > > On Thu, 2022-11-03 at 18:07 -0700, Peter Collingbourne wrote:
> > > > > > On Wed, Oct 19, 2022 at 03:28:43PM -0500, Bjorn Helgaas wrote:
> > > > > > > From: Bjorn Helgaas <bhelgaas@google.com>
> > > > > > >
> > > > > > > The lkml.org, marc.info, spinics.net, etc archives are not quite as useful
> > > > > > > as lore.kernel.org because they use different styles, add advertising, and
> > > > > > > may disappear in the future.  The lore archives are more consistent and
> > > > > > > more likely to stick around, so prefer https://lore.kernel.org URLs when
> > > > > > > they exist.
> > > > > >
> > > > > > If the commit message contains a line like:
> > > > > >
> > > > > > Cc: linux-arm-kernel@lists.infradead.org
> > > > > >
> > > > > > this patch causes checkpatch.pl to complain. Would it be possible to
> > > > > > restrict this to URLs?
> > > > >
> > > > > Yes, I believe this would probably work well enough:
> > > > > ---
> > > > >  scripts/checkpatch.pl | 3 ++-
> > > > >  1 file changed, 2 insertions(+), 1 deletion(-)
> > > > >
> > > > > diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> > > > > index 7be93c3df2bcb..fe25642d8bacc 100755
> > > > > --- a/scripts/checkpatch.pl
> > > > > +++ b/scripts/checkpatch.pl
> > > > > @@ -3336,7 +3336,8 @@ sub process {
> > > > >                 }
> > > > >
> > > > >  # Check for mailing list archives other than lore.kernel.org
> > > > > -               if ($rawline =~ m{\b$obsolete_archives}) {
> > > > > +               if ($rawline =~ m{\b$obsolete_archives} &&
> > > > > +                   $rawline !~ /^\s*cc:/i) {
> > > >
> > > > Can we make this (to|cc): instead? Otherwise developers (like me) who
> > > > use custom scripts to add To: headers to their patches before passing
> > > > them to checkpatch.pl will also hit this warning if their patch is
> > > > being sent To: one of these mailing lists.
> > >
> > > Why not make it look for "http" instead of the absence of "cc"?
> >
> > "https" as well, but yes, that would make more sense to me, and would
> > be less likely to require user workarounds.
>
> Maybe like this?  (On top of my previous attempt, which is in -next)
>
>
> commit d15f85247948 ("checkpatch: warn only for URLs to non-lore archives")
> Author: Bjorn Helgaas <bhelgaas@google.com>
> Date:   Mon Nov 14 16:33:12 2022 -0600
>
>     checkpatch: warn only for URLs to non-lore archives
>
>     Previously we warned for anything that contained the archive hostname, but
>     some email addresses also contain those hostnames, and we'd rather not warn
>     about those.  Only warn if we see "http" before the archive hostname.
>
>     Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

Reviewed-by: Peter Collingbourne <pcc@google.com>

Peter