From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sat, 25 Feb 2006 10:31:13 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [PATCH] [RFC] for_each_page_in_zone [1/1] Message-Id: <20060225103113.644191cb.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20060225102443.22b5727e.kamezawa.hiroyu@jp.fujitsu.com> References: <20060224171518.29bae84b.kamezawa.hiroyu@jp.fujitsu.com> <1140795826.8697.86.camel@localhost.localdomain> <20060225102443.22b5727e.kamezawa.hiroyu@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: KAMEZAWA Hiroyuki Cc: haveblue@us.ibm.com, linux-mm@kvack.org, pavel@suse.cz, kravetz@us.ibm.com List-ID: On Sat, 25 Feb 2006 10:24:43 +0900 KAMEZAWA Hiroyuki wrote: > Oh......maybe this code is ok? > -- > do { > pfn = next_valid_pfn(pfn, zone->zone_start_pfn + zone->zone->spanned_pages); > }while(page_zone(pfn_to_page(pfn)) !-= zone); > -- > I think powerpc uses SPARSEMEM when NUMA, so pfn is efficientlly skipped. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Ignore above (>< This code doesn't change current inefficiency...so more optimization (with some assumption or with some helper information) can be done in future.. --Kame -- 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