linux-kernel - Re: [PATCH] checkpatch: Improve CamelCase test for Page

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Date:	Fri, 22 Feb 2013 17:21:51 -0500
From:	Peter Hurley <peter@...leysoftware.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Joe Perches <joe@...ches.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] checkpatch: Improve CamelCase test for Page

On Fri, 2013-02-22 at 14:05 -0800, Andrew Morton wrote:
> On Fri, 22 Feb 2013 17:01:48 -0500
> Peter Hurley <peter@...leysoftware.com> wrote:
> 
> > On Fri, 2013-02-22 at 12:59 -0800, Joe Perches wrote:
> > > Add the ClearPage/SetPage/TestClearPage/TestSetPage
> > > variants to the not reported Page CamelCase variables.
> > > 
> > > Signed-off-by: Joe Perches <joe@...ches.com>
> > > ---
> > >  scripts/checkpatch.pl | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > 
> > > diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> > > index 747bcd7..8a32306 100755
> > > --- a/scripts/checkpatch.pl
> > > +++ b/scripts/checkpatch.pl
> > > @@ -2930,7 +2930,7 @@ sub process {
> > >  			my $var = $1;
> > >  			if ($var !~ /$Constant/ &&
> > >  			    $var =~ /[A-Z]\w*[a-z]|[a-z]\w*[A-Z]/ &&
> > > -			    $var !~ /^Page[A-Z]/ &&
> > > +			    $var !~ /"^(?:Clear|Set|TestClear|TestSet|)Page[A-Z]/ &&
> > >  			    !defined $camelcase{$var}) {
> > >  				$camelcase{$var} = 1;
> > >  				WARN("CAMELCASE",
> > > 
> > 
> > In a recent patch, checkpatch gave this warning.
> > 
> > WARNING: Avoid CamelCase: <tty->SAK_work>
> > #35: FILE: drivers/tty/tty_io.c:1475:
> > +	flush_work(&tty->SAK_work);
> 
> If we start whitelisting these things, it will never end.
> 
> My (cruelly spurned) suggestion for this check is to grep the affected
> files to see if the symbol is already present and if so, don't warn.
> 
> Or just revert the whole thing.  I get tons of camelcase warnings, and
> they're always unuseful/incorrect/ignored.

Oh. I didn't know the impetus (although I had seen the mm variance and
wondered :)

I don't have an opinion on this. It doesn't bother me, but I'm not my
own maintainer.

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