linux-kernel - Re: [PATCH 01/12] ping.h: Remove extern from function prototypes

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Message-ID: <1379902599.3575.9.camel@joe-AO722>
Date:	Sun, 22 Sep 2013 19:16:39 -0700
From:	Joe Perches <joe@...ches.com>
To:	Ryan Mallon <rmallon@...il.com>
Cc:	netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 01/12] ping.h: Remove extern from function prototypes

On Mon, 2013-09-23 at 11:59 +1000, Ryan Mallon wrote:
> This seems like a lot of code churn for very little benefit. At a quick
> glance:
> 
>   git grep extern include/ | wc -l
>   11427
> 
> Not all of those will need to be removed, but that is still a huge
> number to change, and doesn't include extern usage in C files or local
> headers. You are probably never going to remove all the instances, so
> what is the point of just randomly doing a handful?

Rather more than a handful.

The ratio of function prototypes without extern to
function prototypes with extern is currently ~2.5:1

So:

Standardization without extern
Line count reduction (~10%)
Miscellaneous neatening at the same time
Removal of all unnecessary externs from include/net

There are ~8500 instances in include/
There are ~1500 instances in include/net/

After this series, 0 in include/net/

Start somewhere, go from there...

$ git grep -E "^\s*\bextern(\s+\w+){1,4}\s*\(\s*[^\*]" include/ | wc -l
8395
$ git grep -E "^\s*\bextern(\s+\w+){1,4}\s*\(\s*[^\*]" include/net/ | wc -l
1471


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