From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: [PATCH] change global zonelist order on NUMA v2 From: Lee Schermerhorn In-Reply-To: References: <20070426183417.058f6f9e.kamezawa.hiroyu@jp.fujitsu.com> <200704261147.44413.ak@suse.de> <20070426191043.df96c114.kamezawa.hiroyu@jp.fujitsu.com> <20070427092736.d0626a30.kamezawa.hiroyu@jp.fujitsu.com> Content-Type: text/plain Date: Mon, 30 Apr 2007 11:03:06 -0400 Message-Id: <1177945387.5623.21.camel@localhost> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: KAMEZAWA Hiroyuki , ak@suse.de, linux-kernel@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org List-ID: On Thu, 2007-04-26 at 18:25 -0700, Christoph Lameter wrote: > On Fri, 27 Apr 2007, KAMEZAWA Hiroyuki wrote: > > > > DMA memory. > > > > > It seems a bit complicated. If we do so, following can occur, > > > > Node1: cpu0,1,2,3 > > Node0: cpu4,5,6,7 > > We were discussing a two node NUMA system. If you have more put it onto > the last. Doesn't this [renumbering nodes] just move the problem to that "last" node? I.e., when one attempts to allocate normal memory from the last node, it will overflow to the DMA zone. What we need is for and DMA[32] zone[s] to be last in [or excluded from?] the Normal/Movable/High/... zonelist for each node. That is what Kame's patch does. Lee -- 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