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Date: Sun, 24 Mar 2013 17:28:12 -0700 (PDT) From: David Rientjes <rientjes@...gle.com> To: KOSAKI Motohiro <kosaki.motohiro@...il.com> cc: 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 Sat, 23 Mar 2013, KOSAKI Motohiro wrote: > > --- linux.orig/mm/page_alloc.c 2013-03-19 16:09:03.736450861 -0500 > > +++ linux/mm/page_alloc.c 2013-03-22 17:07:43.895405617 -0500 > > @@ -4161,10 +4161,23 @@ int __meminit __early_pfn_to_nid(unsigne > > { > > unsigned long start_pfn, end_pfn; > > int i, nid; > > + /* > > + NOTE: The following SMP-unsafe globals are only used early > > + in boot when the kernel is running single-threaded. > > + */ > > + static unsigned long last_start_pfn, last_end_pfn; > > + static int last_nid; > > Why don't you mark them __meminitdata? They seems freeable. > Um, defining them in a __meminit function places them in .meminit.data already. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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