From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 13 Apr 2006 19:32:32 +0900 From: Yasunori Goto Subject: Re: [PATCH 0/7] [RFC] Sizing zones and holes in an architecture independent manner V2 In-Reply-To: <20060413095207.GA4047@skynet.ie> References: <20060412232036.18862.84118.sendpatchset@skynet> <20060413095207.GA4047@skynet.ie> Message-Id: <20060413191700.1146.Y-GOTO@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Mel Gorman Cc: davej@codemonkey.org.uk, tony.luck@intel.com, linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org, bob.picco@hp.com, ak@suse.de, linux-mm@kvack.org List-ID: 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; > } > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- Yasunori Goto -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org