linux-kernel - Re: [PATCH] linux/string.h: Introduce streq macro.

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Date:	Tue, 26 Apr 2011 16:47:31 -0300
From:	Thiago Farina <tfransosi@...il.com>
To:	Joe Perches <joe@...ches.com>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Alexey Dobriyan <adobriyan@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] linux/string.h: Introduce streq macro.

On Tue, Apr 26, 2011 at 4:45 PM, Joe Perches <joe@...ches.com> wrote:
> On Tue, 2011-04-26 at 15:37 -0400, Steven Rostedt wrote:
>> On Tue, 2011-04-26 at 16:21 -0300, Thiago Farina wrote:
>> > On Tue, Apr 26, 2011 at 4:20 PM, Alexey Dobriyan <adobriyan@...il.com> wrote:
>> > > On Tue, Apr 26, 2011 at 03:17:48PM -0400, Steven Rostedt wrote:
>> > >> On Tue, 2011-04-26 at 22:05 +0300, Alexey Dobriyan wrote:
>> > >> > On Tue, Apr 26, 2011 at 03:49:49PM -0300, Thiago Farina wrote:
>> > >> > > + * streq - Are two strings equal?
>> > > The point is that function is trivial, and if someone doesn't
>> > > understand it, he should read some Kernighan and Ritchie first.
>> Replace it with something like:
>>       * Use this:     streq(a, b)
>>       * instead of:   strcmp(a, b) == 0 or !strcmp(a, b)
>>       * This makes the code more readable and less error prone.
>
> I think it's not good to introduce another form.
> strcmp is the standard everyone understands.
>
> There are already about 2800 uses of strcmp()==0 and !strcmp
>
> $ grep -rP --include=*.[ch] "\bstrcmp.*==\s*0\b" * | wc -l
> 1143
> $ grep -rP --include=*.[ch] "\!\s*strcmp\s*\(" *  | wc -l
> 1663
>
> Can you count how many misuses of strcmp have been
> corrected?

> Do you plan to convert the existing 2800?

I'd work on this without any problem.
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