From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753238Ab0DTCji (ORCPT ); Mon, 19 Apr 2010 22:39:38 -0400 Received: from fgwmail6.fujitsu.co.jp ([192.51.44.36]:42298 "EHLO fgwmail6.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753061Ab0DTCjh (ORCPT ); Mon, 19 Apr 2010 22:39:37 -0400 X-SecurityPolicyCheck-FJ: OK by FujitsuOutboundMailChecker v1.3.1 Date: Tue, 20 Apr 2010 11:35:44 +0900 From: KAMEZAWA Hiroyuki To: Mel Gorman Cc: linux-kernel@vger.kernel.org, akpm@linux-foundation.org, "linux-mm@kvack.org" , "minchan.kim@gmail.com" , "kosaki.motohiro@jp.fujitsu.com" Subject: Re: error at compaction (Re: mmotm 2010-04-15-14-42 uploaded Message-Id: <20100420113544.b06be095.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20100419181442.GA19264@csn.ul.ie> References: <201004152210.o3FMA7KV001909@imap1.linux-foundation.org> <20100419190133.50a13021.kamezawa.hiroyu@jp.fujitsu.com> <20100419181442.GA19264@csn.ul.ie> Organization: FUJITSU Co. LTD. X-Mailer: Sylpheed 3.0.2 (GTK+ 2.10.14; i686-pc-mingw32) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 19 Apr 2010 19:14:42 +0100 Mel Gorman wrote: > On Mon, Apr 19, 2010 at 07:01:33PM +0900, KAMEZAWA Hiroyuki wrote: > I'll verify the theory tomorrow but it's a plausible explanation. On a > different note, where did config options like the following come out of? > > CONFIG_ARCH_HWEIGHT_CFLAGS="-fcall-saved-rdi -fcall-saved-rsi -fcall-saved-rdx -fcall-saved-rcx -fcall-saved-r8 -fcall-saved-r9 -fcall-saved-r10 -fcall-saved-r11" > > I don't think they are a factor but I'm curious. > Hmm ? arch/x86/Kconfig. config ARCH_HWEIGHT_CFLAGS string default "-fcall-saved-ecx -fcall-saved-edx" if X86_32 default "-fcall-saved-rdi -fcall-saved-rsi -fcall-saved-rdx -fcall-saved-rcx -fcall-saved-r8 -fcall-saved-r9 -fcall-saved-r10 -fcall-saved-r11" if X86_64 Seems to be from patches/x86-add-optimized-popcnt-variants.patch Thanks, -Kame