linux-kernel - Re: [RFC/PATCH] doc: volatile considered evil

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Message-ID: <46410F1D.8060808@oracle.com>
Date:	Tue, 08 May 2007 17:00:29 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	David Rientjes <rientjes@...gle.com>
CC:	Krzysztof Halasa <khc@...waw.pl>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Paul Sokolovsky <pmiscml@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC/PATCH] doc: volatile considered evil

David Rientjes wrote:
> On Tue, 8 May 2007, Randy Dunlap wrote:
> 
>> It's already there, isn't it?  <quote from original:>
>>
>> The only acceptable uses for "volatile" are:
>>
>>  - in _code_, i.e., for things like the definition of "readb()" etc, where we
>>    use it to force a particular access.
>>  - with inline asms
>>  - on "jiffies", for stupid legacy reasons
>>
>> </quote>
>>
>> or are you saying that you want to subject/header/title modified also?
>>
> 
> I wasn't aware that you were considering the inclusion of Linus' entire 
> email in the document.  There exists a point where CodingStyle becomes so 
> large that people choose not to read it in its entirety, so I was 
> expecting only an addition that would explicit document the acceptable and
> unacceptable uses of 'volatile' in kernel code with perhaps a link to his 
> email.

but I wouldn't put it into CodingStyle.

-- 
~Randy
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