Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758648Ab3CFQD7 (ORCPT ); Wed, 6 Mar 2013 11:03:59 -0500 Received: from mail-we0-f175.google.com ([74.125.82.175]:48156 "EHLO mail-we0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753823Ab3CFQD5 (ORCPT ); Wed, 6 Mar 2013 11:03:57 -0500 MIME-Version: 1.0 In-Reply-To: <20130302083622.31252.38843.stgit@localhost6.localdomain6> References: <20130302083447.31252.93914.stgit@localhost6.localdomain6> <20130302083622.31252.38843.stgit@localhost6.localdomain6> Date: Wed, 6 Mar 2013 23:55:58 +0800 Message-ID: Subject: Re: [PATCH v2 06/20] vmcore, procfs: introduce a flag to distinguish objects copied in 2nd kernel From: Yanfei Zhang To: HATAYAMA Daisuke Cc: vgoyal@redhat.com, ebiederm@xmission.com, cpw@sgi.com, kumagai-atsushi@mxc.nes.nec.co.jp, lisa.mitchell@hp.com, heiko.carstens@de.ibm.com, akpm@linux-foundation.org, kexec@lists.infradead.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1698 Lines: 50 2013/3/2 HATAYAMA Daisuke : > The part of dump target memory is copied into the 2nd kernel if it > doesn't satisfy mmap()'s page-size boundary requirement. To > distinguish such copied object from usual old memory, a flag > MEM_TYPE_CURRENT_KERNEL is introduced. If this flag is set, the object > is considered being copied into buffer on the 2nd kernel. Reviewed-by: Zhang Yanfei > > Signed-off-by: HATAYAMA Daisuke > --- > > include/linux/proc_fs.h | 8 +++++++- > 1 files changed, 7 insertions(+), 1 deletions(-) > > diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h > index 8307f2f..11dd592 100644 > --- a/include/linux/proc_fs.h > +++ b/include/linux/proc_fs.h > @@ -97,11 +97,17 @@ struct kcore_list { > int type; > }; > > +#define MEM_TYPE_CURRENT_KERNEL 0x1 > + > struct vmcore { > struct list_head list; > - unsigned long long paddr; > + union { > + unsigned long long paddr; > + char *buf; > + }; > unsigned long long size; > loff_t offset; > + unsigned int flag; > }; > > #ifdef CONFIG_PROC_FS > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/