linux-kernel - Re: lots of code could be simplified by using ARRAY

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Message-ID: <20061216084007.GC4049@ucw.cz>
Date:	Sat, 16 Dec 2006 08:40:08 +0000
From:	Pavel Machek <pavel@....cz>
To:	"Robert P. J. Day" <rpjday@...dspring.com>
Cc:	Linux kernel mailing list <linux-kernel@...r.kernel.org>
Subject: Re: lots of code could be simplified by using ARRAY_SIZE()

Hi!

>   there are numerous places throughout the source tree that apparently
> calculate the size of an array using the construct
> "sizeof(fubar)/sizeof(fubar[0])". see for yourself:
> 
>   $ grep -Er "sizeof\((.*)\) ?/ ?sizeof\(\1\[0\]\)" *
> 
> but we already have, from "include/linux/kernel.h":
> 
>   #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))

Hmmm. quite misleading name :-(. ARRAY_LEN would be better.

-- 
Thanks for all the (sleeping) penguins.
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