linux-kernel - Re: Trailing periods in kernel messages

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Date:	Thu, 20 Dec 2007 16:29:23 +0000
From:	Andy Whitcroft <apw@...dowen.org>
To:	Joe Perches <joe@...ches.com>
Cc:	Li Zefan <lizf@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Frans Pop <elendil@...net.nl>, linux-kernel@...r.kernel.org,
	tglx@...utronix.de, trivial@...nel.org,
	Randy Dunlap <rdunlap@...otime.net>,
	Joel Schopp <jschopp@...tin.ibm.com>
Subject: Re: Trailing periods in kernel messages

On Thu, Nov 29, 2007 at 06:35:28PM -0800, Joe Perches wrote:
> On Fri, 2007-11-30 at 09:54 +0800, Li Zefan wrote:
> > So it doesn't deserve the effort to eliminate these periods, isn't it?
> 
> I hope these will eventually disappear.
> 
> > Or we can add a check to checkpatch.pl to prevent new ones.
> 
> Perhaps that's a good idea.
> 
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index cbb4258..707f84c 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -1390,6 +1390,10 @@ sub process {
>  		if ($line =~ /\*\s*\)\s*k[czm]alloc\b/) {
>  			WARN("unnecessary cast may hide bugs, see http://c-faq.com/malloc/mallocnocast.html\n" . $herecurr);
>  		}
> +
> +		if ($rawline =~ /(print|pr_(emerg|alert|crit|err|warning|notice|info|debug)).*\.\\n\"/) {
> +			WARN("unnecessary period before newline\n" . $herecurr);
> +		}

I missed the context on this one.  So this is checking for periods at
the end of messages for printk's.  We would need something a little
cleverer to ensure we are only checking the contents of the string.  But
eminently doable.

/me plays

Ok, yes this seems ok.  Have added it for 0.13.

-apw
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