Re: [PATCH 0/7] [RFC] Sizing zones and holes in an architecture independent manner V2

[Yasunori Goto <y-goto@jp.fujitsu.com>]

Ah, my willing patch is here. :-).
My system, which is Tiger4 with my numa emulation,
can boot up by this patch.

Thanks.


> On (13/04/06 00:20), Mel Gorman didst pronounce:
> > This is V2 of the patchset. They have been boot tested on x86, ppc64
> > and x86_64 but I still need to do a double check that zones are the
> > same size before and after the patch on all arches. IA64 passed a
> > basic compile-test. a driver program that fed in the values generated
> > by IA64 to add_active_range(), zone_present_pages_in_node() and
> > zone_absent_pages_in_node() seemed to generate expected values.
> 
> I didn't look at the test program output carefully enough! There was a
> double counting of some holes because of a missing "if" - obvious in the
> morning. Fix is this (applies on top of the debugging patch)
> 
> diff -rup -X /usr/src/patchset-0.5/bin//dontdiff linux-2.6.17-rc1-zonesizing-v6/mm/mem_init.c linux-2.6.17-rc1-zonesizing-v7/mm/mem_init.c
> --- linux-2.6.17-rc1-zonesizing-v6/mm/mem_init.c	2006-04-13 10:30:50.000000000 +0100
> +++ linux-2.6.17-rc1-zonesizing-v7/mm/mem_init.c	2006-04-13 10:37:11.000000000 +0100
> @@ -761,9 +761,11 @@ unsigned long __init zone_absent_pages_i
>  		}
>  
>  		/* Update the hole size cound and move on */
> -		hole_pages += start_pfn - prev_end_pfn;
> -		printk("Hole found index %d: %lu -> %lu\n",
> -				i, prev_end_pfn, start_pfn);
> +		if (start_pfn > arch_zone_lowest_possible_pfn[zone_type]) {
> +			hole_pages += start_pfn - prev_end_pfn;
> +			printk("Hole found index %d: %lu -> %lu\n",
> +					i, prev_end_pfn, start_pfn);
> +		}
>  		prev_end_pfn = early_node_map[i].end_pfn;
>  	}
>  
> -
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-- 
Yasunori Goto 


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