linux-kernel - Re: Mark bitrevX() functions as const

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Message-ID: <Pine.LNX.4.64.0612110803340.12500@woody.osdl.org>
Date:	Mon, 11 Dec 2006 08:05:56 -0800 (PST)
From:	Linus Torvalds <torvalds@...l.org>
To:	David Howells <dhowells@...hat.com>
cc:	Akinobu Mita <akinobu.mita@...il.com>, akpm@...l.org,
	linux-kernel@...r.kernel.org
Subject: Re: Mark bitrevX() functions as const

On Mon, 11 Dec 2006, David Howells wrote:
> 
> Mark the bit reversal functions as being const as they always return the same
> output for any given input.

Well, we should mark the argument const too, no?

Does anythign actually improve from this? Also, we should actually use 
"__attribute_const__" instead (which works with other compilers), not the 
gcc'ism. That "__attribute__((const))" thing is a horrible syntax anyway 
(and has apparently slipped into <linux/log2.h> too - Damn.

		Linus
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