linux-kernel - Re: [PATCH] sysctl.c: Change a .proc_handler = proc_dointvec to &proc

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Message-ID: <Pine.LNX.4.64.0911152232090.30372@ask.diku.dk>
Date:	Sun, 15 Nov 2009 22:34:10 +0100 (CET)
From:	Julia Lawall <julia@...u.dk>
To:	Joe Perches <joe@...ches.com>
Cc:	Andy Whitcroft <apw@...onical.com>, Ingo Molnar <mingo@...e.hu>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Am??rico Wang <xiyou.wangcong@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] sysctl.c: Change a .proc_handler = proc_dointvec to
 &proc_dointvec,

On Sun, 15 Nov 2009, Joe Perches wrote:

> On Sun, 2009-11-15 at 21:40 +0100, Julia Lawall wrote:
> > On Sun, 15 Nov 2009, Joe Perches wrote:
> > > On Sun, 2009-11-15 at 19:20 +0100, Julia Lawall wrote:
> > > > Searching for things that are declared as functions (either a definition 
> > > > or a prototype), and then referenced as &f gives over 2000 results in 
> > > > almost 600 files.
> > > Just curious, do you know how many are referenced
> > > without the &?
> > I got over 95000 (not checked in detail, though).
> 
> Thanks.
> 
> I think that ~25+:1 ratio makes a good case for an
> eventual conversion of the remaining uses.

OK, I will try to look into it sometime soon.

> > > If what is desired is kernel wide consistent use, yes.
> > > What I would like is file/subsystem consistent use.
> > > 
> > > Looking at sysctl.c and seeing that different use
> > > stand out was odd.
> > 
> > It would be possible to count the number of occurrences in a given file, 
> > and then change the ones that have the less popular format, or a format 
> > that occurs less than some percentage of time.
> 
> Maybe it'd be useful to add a coccinelle/spatch
> directory in scripts and add these scripts so
> that files and subsystems can updated over time.
> 
> I can not find a directory of coccinelle input
> scripts for linux at:
> http://coccinelle.lip6.fr/download.php
> Is there a list somewhere?

At the bottom of the download page there is a tool called coccicheck that 
runs Coccinelle on a set of semantic patches.  It comes with a set of 
examples.

http://coccinelle.lip6.fr/distrib/coccicheck-0.1.tgz

julia

> Perhaps add a checkpatch test as well though
> that might be an interesting test to write in
> perl.
> 
> 
> 
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