From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with ESMTP id E73838D0040 for ; Tue, 29 Mar 2011 21:51:34 -0400 (EDT) Received: from m3.gw.fujitsu.co.jp (unknown [10.0.50.73]) by fgwmail5.fujitsu.co.jp (Postfix) with ESMTP id C8E583EE0AE for ; Wed, 30 Mar 2011 10:51:30 +0900 (JST) Received: from smail (m3 [127.0.0.1]) by outgoing.m3.gw.fujitsu.co.jp (Postfix) with ESMTP id ABF4145DE95 for ; Wed, 30 Mar 2011 10:51:30 +0900 (JST) Received: from s3.gw.fujitsu.co.jp (s3.gw.fujitsu.co.jp [10.0.50.93]) by m3.gw.fujitsu.co.jp (Postfix) with ESMTP id 9381345DE92 for ; Wed, 30 Mar 2011 10:51:30 +0900 (JST) Received: from s3.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s3.gw.fujitsu.co.jp (Postfix) with ESMTP id 86B93E08002 for ; Wed, 30 Mar 2011 10:51:30 +0900 (JST) Received: from m107.s.css.fujitsu.com (m107.s.css.fujitsu.com [10.240.81.147]) by s3.gw.fujitsu.co.jp (Postfix) with ESMTP id 4E23DE08007 for ; Wed, 30 Mar 2011 10:51:30 +0900 (JST) From: KOSAKI Motohiro Subject: Re: [PATCH] Stack trace dedup In-Reply-To: References: <20110330102205.E925.A69D9226@jp.fujitsu.com> Message-Id: <20110330105204.E929.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Date: Wed, 30 Mar 2011 10:51:29 +0900 (JST) Sender: owner-linux-mm@kvack.org List-ID: To: Ying Han Cc: kosaki.motohiro@jp.fujitsu.com, Minchan Kim , Rik van Riel , Mel Gorman , KAMEZAWA Hiroyuki , Andrew Morton , linux-mm@kvack.org > On Tue, Mar 29, 2011 at 6:21 PM, KOSAKI Motohiro > wrote: > >> This doesn't build. > >> --- > > > > This is slightly reticence changelog. Can you please explain a purpose > > and benefit? > > Hi: > > Sorry about the spam. This is a patch that I was preparing to send > upstream but not ready yet. I don't know why it got sent out ( must be > myself did something wrong on my keyboard ) . No problem. I have a same experience, to be honest. > In a short, this eliminate the duplication of task stack trace in dump > messages. The problem w/ fixed size of dmesg ring buffer limits how > many task trace to be logged. When the duplication remains high, we > lose important information. This patch reduces the duplication by > dumping the first task stack trace only for contiguous duplications. Seems reasonable. > > I will prepare it later with full commit description. OK, I'm looking for it. -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org