From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763717AbXKPCdi (ORCPT ); Thu, 15 Nov 2007 21:33:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933786AbXKPCdM (ORCPT ); Thu, 15 Nov 2007 21:33:12 -0500 Received: from TYO201.gate.nec.co.jp ([202.32.8.193]:50896 "EHLO tyo201.gate.nec.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1765479AbXKPCdL (ORCPT ); Thu, 15 Nov 2007 21:33:11 -0500 Message-Id: <473D0176.6090702@mxs.nes.nec.co.jp> Date: Fri, 16 Nov 2007 11:33:26 +0900 From: "Ken'ichi Ohmichi" User-Agent: Thunderbird 2.0.0.6 (Windows/20070728) MIME-Version: 1.0 To: lkml , kexec-ml Subject: [PATCH 5/5] Add the array length of "free_list" for filtering free pages References: <473CFE14.3010400@mxs.nes.nec.co.jp> In-Reply-To: <473CFE14.3010400@mxs.nes.nec.co.jp> Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org This patch adds the array length of "free_area.free_list" to the vmcoreinfo data so that makedumpfile (dump filtering command) can exclude all free pages in linux-2.6.24. makedumpfile creates a small dumpfile by excluding unnecessary pages for the analysis. To distinguish unnecessary pages, makedumpfile gets the vmcoreinfo data which has the minimum debugging information only for dump filtering. In 2.6.24-rc1 or later, the free_area.free_list is an array which has one list for each migrate types instead of a single list. makedumpfile needs the array length of "free_area.free_list" and the vmcoreinfo data should contain it. Signed-off-by: Huang Ying Tested-by: Ken'ichi Ohmichi --- diff -rpuN a/kernel/kexec.c b/kernel/kexec.c --- a/kernel/kexec.c 2007-11-12 11:15:26.000000000 +0900 +++ b/kernel/kexec.c 2007-11-12 11:16:09.000000000 +0900 @@ -1404,6 +1404,7 @@ static int __init crash_save_vmcoreinfo_ VMCOREINFO_OFFSET(list_head, next); VMCOREINFO_OFFSET(list_head, prev); VMCOREINFO_LENGTH(zone.free_area, MAX_ORDER); + VMCOREINFO_LENGTH(free_area.free_list, MIGRATE_TYPES); VMCOREINFO_NUMBER(NR_FREE_PAGES); arch_crash_save_vmcoreinfo(); _