linux-kernel - Re: Fw: [PATCH 0/2] feat: checkpatch: prohibit Buglink: and warn about missing Link:

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Message-ID: <6f7ae389b64b83918ba624d107d8fa49883df540.camel@perches.com>
Date:   Thu, 08 Dec 2022 09:22:59 -0800
From:   Joe Perches <joe@...ches.com>
To:     Thorsten Leemhuis <linux@...mhuis.info>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Kai Wasserbäch <kai@....carbon-project.org>
Subject: Re: Fw: [PATCH 0/2] feat: checkpatch: prohibit Buglink: and warn
 about missing Link:

On Thu, 2022-12-08 at 14:18 +0100, Thorsten Leemhuis wrote:
> On 06.12.22 10:21, Joe Perches wrote:
> > On Tue, 2022-12-06 at 09:50 +0100, Thorsten Leemhuis wrote:
> > > On 06.12.22 08:44, Joe Perches wrote:
[]
> > > > To me most of these are in the noise level, but perhaps all should just
> > > > use Link:
> > > > 
> > > > $ git log -100000 --format=email -P --grep='^\w+:[ \t]*http' | \
> > > >   grep -Poh '^\w+:[ \t]*http' | \
> > > >   sort | uniq -c | sort -rn
> > > >  103889 Link: http
> > > >     415 BugLink: http
> > > >     372 Patchwork: http
> > > >     270 Closes: http
> > > >     221 Bug: http
> > > >     121 References: http
> > > >     101 v1: http
> > > >      77 Bugzilla: http
> > > >      60 URL: http
> > > >      59 v2: http
> > > >      37 Datasheet: http
> > > >      35 v3: http
> > > >      19 v4: http
> > > >      12 v5: http
> > 
> > > Ha, I considered doing something like that when I wrote my earlier mail,
> > > but was to lazy. :-D thx!
[]
> > diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
[]
> > @@ -3250,6 +3250,13 @@ sub process {
> >  			$commit_log_possible_stack_dump = 0;
> >  		}
> >  
> > +# Check for odd prefixes before a URI/URL
> > +		if ($in_commit_log &&
> > +		    $line =~ /^\s*(\w+):\s*http/ && $1 !~ /^(?:Link|Patchwork)/) {
> > +			WARN("PREFER_LINK",
> > +			     "Unusual link reference '$1:', prefer 'Link:'\n" . $herecurr);
> > +		}
> > +
> 
> One more thing: That afaics would result in a warning when people use
> things like "v1: https://example.com/somewhere", which some people
> apparently like. Those imho are not considered tags, hence I'd say we
> allow them, unless you disagree.

I'd say no as almost all of those are when patches contain
references to previous patch submissions that should instead
be below the --- line.  Perhaps there should be a separate
warning for those v<n>: uses saying to move them below the ---
but there really aren't many uses.

Most of the v<n>: style prefixes are from git pulls/merges.
Redoing the git log grep with --no-merges shows that fairly well.

$ git log -100000 --no-merges --format=email -P --grep='^\w+:[ \t]*http' | \
  grep -Poh '^\w+:[ \t]*http' | \
  sort | uniq -c | sort -rn
 103958 Link: http
    418 BugLink: http
    372 Patchwork: http
    280 Closes: http
    224 Bug: http
    123 References: http
     84 Bugzilla: http
     61 URL: http
     42 v1: http
     38 Datasheet: http
     20 v2: http
      9 Ref: http
      9 Fixes: http
      9 Buglink: http
      8 v3: http
      8 Reference: http
      7 See: http
      6 1: http
      5 link: http
      3 Link:http
      3 IGT: http
      3 0: http
      2 Website: http
      2 Schematics: http
      2 RHBZ: http
      2 Reported: http
      2 MR: http
      2 Links: http
      2 LINK: http
      2 Link:  http
      2 Bugs: http
      2 BUG: http
      2 2: http
      1 v5: http
      1 v4: http
      1 V1: http
      1 v1:http
      1 Twitter: http
      1 tree: http
      1 tool: http
      1 tests: http
      1 tasks: http
      1 Source: http
      1 SoM: http
      1 scctc: http
      1 Reproducer: http
      1 reliable: http
      1 Related: http
      1 Reference:http
      1 oscca: http
      1 Mesa: http
      1 Lore: http
      1 Links:http
      1 ink: http
      1 in: http
      1 IETF: http
      1 here: http
      1 Examples: http
      1 bz: http
      1 Bug:http
      1 AlsaInfo: http