linux-kernel - Re: [patch 01/10] compiler: define __attribute_unused_

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Message-ID: <463833C6.5030401@yahoo.com.au>
Date:	Wed, 02 May 2007 16:46:30 +1000
From:	Nick Piggin <nickpiggin@...oo.com.au>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	David Rientjes <rientjes@...gle.com>,
	Alexey Dobriyan <adobriyan@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [patch 01/10] compiler: define __attribute_unused__

Andrew Morton wrote:
> On Tue, 1 May 2007 22:53:52 -0700 (PDT) David Rientjes <rientjes@...gle.com> wrote:
> 
> 
>>On Wed, 2 May 2007, Alexey Dobriyan wrote:
>>
>>
>>>On Tue, May 01, 2007 at 09:28:18PM -0700, David Rientjes wrote:
>>>
>>>>+#define __attribute_unused__		__attribute__((unused))
>>>
>>>Suggest __unused which is shorter and looks compiler-neutral.
>>>
>>
>>So you would also suggest renaming __attribute_used__ and all 48 of its 
>>uses to __used?
> 
> 
> Or __needed or __unneeded.  None of them mean much to me and I'd be forever
> going back to the definition to work out what was intended.
> 
> We're still in search of a name, IMO.  But once we have it, yeah, we should
> update all present users.  We can do that over time: retain the old and new
> definitions for a while.

maybe_unused?

The used attribute IMO is a bit easier to parse, so I don't think that
needs to be renamed.

Regarding the used vs needed thing, I don't think needed adds very much
and deviates from gcc terminology. Presumably if something is used it is
needed, and vice versa; similarly for unused.

-- 
SUSE Labs, Novell Inc.
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