linux-kernel - Re: [ckrm-tech] [PATCH 6/7] BC: kernel memory (core)

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Date:	Mon, 04 Sep 2006 16:23:11 +0400
From:	Kirill Korotaev <dev@...ru>
To:	Dave Hansen <haveblue@...ibm.com>
CC:	Rik van Riel <riel@...hat.com>,
	CKRM-Tech <ckrm-tech@...ts.sourceforge.net>,
	Andi Kleen <ak@...e.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Christoph Hellwig <hch@...radead.org>,
	Andrey Savochkin <saw@...ru>, devel@...nvz.org,
	Matt Helsley <matthltc@...ibm.com>,
	Alexey Dobriyan <adobriyan@...l.ru>,
	Oleg Nesterov <oleg@...sign.ru>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Pavel Emelianov <xemul@...nvz.org>
Subject: Re: [ckrm-tech] [PATCH 6/7] BC: kernel memory (core)

Dave Hansen wrote:
> On Tue, 2006-08-29 at 18:58 +0400, Kirill Korotaev wrote:
> 
>>@@ -274,8 +274,14 @@ struct page {
>>        unsigned int gfp_mask;
>>        unsigned long trace[8];
>> #endif
>>+#ifdef CONFIG_BEANCOUNTERS
>>+       union {
>>+               struct beancounter      *page_bc;
>>+       } bc;
>>+#endif
>> }; 
> 
> 
> I know you're probably saving this union for when you put some userspace
> stuff in here or something.  But, for now, it would probably be best
> just to leave it as a plain struct, or even an anonymous union.
> 
> You probably had to use gcc 2 when this was written and couldn't use
> anonymous unions, right?
are you suggesting the code like this:
>>+#ifdef CONFIG_BEANCOUNTERS
>>+       union {
>>+               struct beancounter      *page_bc;
>>+       };
>>+#endif
>> }; 

#define page_bc(page)	((page)->page_bc)
?

> -- Dave
> 
> 
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-- 
VGER BF report: H 5.55112e-17
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