linux-kernel - Re: [patch] mm: speedup in __early_pfn_to

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Message-Id: <20130325154242.e1171876a3854c4633436658@linux-foundation.org>
Date:	Mon, 25 Mar 2013 15:42:42 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	David Rientjes <rientjes@...gle.com>
Cc:	KOSAKI Motohiro <kosaki.motohiro@...il.com>,
	Russ Anderson <rja@....com>, Ingo Molnar <mingo@...nel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [patch] mm: speedup in __early_pfn_to_nid

On Mon, 25 Mar 2013 15:36:54 -0700 (PDT) David Rientjes <rientjes@...gle.com> wrote:

> On Mon, 25 Mar 2013, Andrew Morton wrote:
> 
> > > Um, defining them in a __meminit function places them in .meminit.data 
> > > already.
> > 
> > I wish it did, but it doesn't.
> > 
> 
> $ objdump -t mm/page_alloc.o | grep last_start_pfn
> 0000000000000240 l     O .meminit.data	0000000000000008 last_start_pfn.34345
> 
> What version of gcc are you using?

4.4.4
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