From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from fgwmail6.fujitsu.co.jp ([192.51.44.36]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UfhwY-0003bB-VD for kexec@lists.infradead.org; Fri, 24 May 2013 02:41:23 +0000 Received: from m1.gw.fujitsu.co.jp (unknown [10.0.50.71]) by fgwmail6.fujitsu.co.jp (Postfix) with ESMTP id D40FE3EE0BB for ; Fri, 24 May 2013 11:41:00 +0900 (JST) Received: from smail (m1 [127.0.0.1]) by outgoing.m1.gw.fujitsu.co.jp (Postfix) with ESMTP id C57D045DE59 for ; Fri, 24 May 2013 11:41:00 +0900 (JST) Received: from s1.gw.fujitsu.co.jp (s1.gw.fujitsu.co.jp [10.0.50.91]) by m1.gw.fujitsu.co.jp (Postfix) with ESMTP id AD5C845DE56 for ; Fri, 24 May 2013 11:41:00 +0900 (JST) Received: from s1.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s1.gw.fujitsu.co.jp (Postfix) with ESMTP id A01361DB804D for ; Fri, 24 May 2013 11:41:00 +0900 (JST) Received: from m1001.s.css.fujitsu.com (m1001.s.css.fujitsu.com [10.240.81.139]) by s1.gw.fujitsu.co.jp (Postfix) with ESMTP id 565191DB803A for ; Fri, 24 May 2013 11:41:00 +0900 (JST) Message-ID: <519ED32F.6090005@jp.fujitsu.com> Date: Fri, 24 May 2013 11:40:47 +0900 From: HATAYAMA Daisuke MIME-Version: 1.0 Subject: Re: [PATCH] makedumpfile: Petr Tesarik's hugepage filtering References: <20130524101121.58d765fdfd5800dee0f1b951@mxc.nes.nec.co.jp> <519ECF57.1080600@jp.fujitsu.com> In-Reply-To: <519ECF57.1080600@jp.fujitsu.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "kexec" Errors-To: kexec-bounces+dwmw2=twosheds.infradead.org@lists.infradead.org To: Atsushi Kumagai Cc: kexec@lists.infradead.org, cpw@sgi.com (2013/05/24 11:24), HATAYAMA Daisuke wrote: > (2013/05/24 10:11), Atsushi Kumagai wrote: >> On Wed, 15 May 2013 13:43:59 -0500 >> Cliff Wickman wrote: > Also, hugetlbfs pages are "user data". They should get filtered when user data dump level > is specified. So how about: > > Dump | zero without with user free hugetlbfs > Level | page private private data page page > -------+----------------------------------------------------- > 0 | > 1 | X > 2 | X > 4 | X X > 8 | X X > 16 | X > 32 | X > 63 | X X X X X X > > On dump level 8, hugetlbfs pages also get filtered. Thinking further, it might be unlikely that we want user data but don't want hugetlbfs pages on crash dump case. If so, I think Petr's implementation seems also OK. It seems no problem to postpone introducing new dump level after someone who wants to filter hugetlbfs pages only, actually occurs. -- Thanks. HATAYAMA, Daisuke _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec