From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail191.messagelabs.com (mail191.messagelabs.com [216.82.242.19]) by kanga.kvack.org (Postfix) with SMTP id E038D6B01F0 for ; Thu, 26 Aug 2010 00:06:28 -0400 (EDT) Received: by yxs7 with SMTP id 7so638761yxs.14 for ; Wed, 25 Aug 2010 21:06:29 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20100826124434.6089630d.kamezawa.hiroyu@jp.fujitsu.com> References: <1282310110.2605.976.camel@laptop> <20100825155814.25c783c7.akpm@linux-foundation.org> <20100826095857.5b821d7f.kamezawa.hiroyu@jp.fujitsu.com> <20100826115017.04f6f707.kamezawa.hiroyu@jp.fujitsu.com> <20100826124434.6089630d.kamezawa.hiroyu@jp.fujitsu.com> Date: Thu, 26 Aug 2010 13:06:28 +0900 Message-ID: Subject: Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator framework From: Minchan Kim Content-Type: text/plain; charset=ISO-8859-1 Sender: owner-linux-mm@kvack.org To: KAMEZAWA Hiroyuki Cc: =?ISO-8859-2?Q?Micha=B3_Nazarewicz?= , Andrew Morton , Hans Verkuil , Daniel Walker , Russell King , Jonathan Corbet , Peter Zijlstra , Pawel Osciak , Konrad Rzeszutek Wilk , linux-kernel@vger.kernel.org, FUJITA Tomonori , linux-mm@kvack.org, Kyungmin Park , Zach Pfeffer , Mark Brown , Mel Gorman , linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Marek Szyprowski List-ID: On Thu, Aug 26, 2010 at 12:44 PM, KAMEZAWA Hiroyuki wrote: > On Thu, 26 Aug 2010 11:50:17 +0900 > KAMEZAWA Hiroyuki wrote: > >> 128MB...too big ? But it's depend on config. >> >> IBM's ppc guys used 16MB section, and recently, a new interface to shrink >> the number of /sys files are added, maybe usable. >> >> Something good with this approach will be you can create "cma" memory >> before installing driver. >> >> But yes, complicated and need some works. >> > Ah, I need to clarify what I want to say. > > With compaction, it's helpful, but you can't get contiguous memory larger > than MAX_ORDER, I think. To get memory larger than MAX_ORDER on demand, > memory hot-plug code has almost all necessary things. True. Doesn't patch's idea of Christoph helps this ? http://lwn.net/Articles/200699/ -- Kind regards, Minchan Kim -- 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