From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756938Ab0LTKv2 (ORCPT ); Mon, 20 Dec 2010 05:51:28 -0500 Received: from mx1.redhat.com ([209.132.183.28]:24466 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754768Ab0LTKvZ (ORCPT ); Mon, 20 Dec 2010 05:51:25 -0500 Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: References: <4d0662e511688484b3@agluck-desktop.sc.intel.com> <4D0BEE1F.7020008@zytor.com> <20101219091752.GA16150@liondog.tnic> To: Tony Luck Cc: dhowells@redhat.com, Borislav Petkov , Tony Luck , Linus Torvalds , "H. Peter Anvin" , linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, tglx@linutronix.de, mingo@elte.hu, greg@kroah.com, akpm@linux-foundation.org, ying.huang@intel.com, David Miller , Alan Cox , Jim Keniston , Kyungmin Park , Geert Uytterhoeven Subject: Re: [concept & "good taste" review] persistent store Date: Mon, 20 Dec 2010 10:49:39 +0000 Message-ID: <17090.1292842179@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Tony Luck wrote: > I'm not sure how big the store is on my system ... the ACPI/ERST > interface on this machine limits each entry to just under 8KB. But > that isn't inherent to to ERST, both larger and smaller values would > be an option. 8K seems quite useful for kmsg_dump purposes as > it grabs a significant number of lines leading up to the oops/panic. How are things written to the store? Is it a record-based affair? David