From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932729AbeARS5I (ORCPT ); Thu, 18 Jan 2018 13:57:08 -0500 Received: from mail.kernel.org ([198.145.29.99]:53210 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932089AbeARS5H (ORCPT ); Thu, 18 Jan 2018 13:57:07 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DAE1D21742 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=goodmis.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=rostedt@goodmis.org Date: Thu, 18 Jan 2018 13:57:04 -0500 From: Steven Rostedt To: Andi Kleen Cc: Dave Young , pmladek@suse.com, sergey.senozhatsky@gmail.com, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, kexec@lists.infradead.org Subject: Re: [PATCH] print kdump kernel loaded status in stack dump Message-ID: <20180118135704.62d0f79f@gandalf.local.home> In-Reply-To: <878tcvt592.fsf@linux.intel.com> References: <20180117045057.GA4994@dhcp-128-65.nay.redhat.com> <878tcvt592.fsf@linux.intel.com> X-Mailer: Claws Mail 3.14.0 (GTK+ 2.24.31; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 18 Jan 2018 10:02:17 -0800 Andi Kleen wrote: > Dave Young writes: > > printk("%sHardware name: %s\n", > > log_lvl, dump_stack_arch_desc_str); > > + if (kexec_crash_loaded()) > > + printk("%skdump kernel loaded\n", log_lvl); > > Oops/warnings are getting longer and longer, often scrolling away > from the screen, and if the kernel crashes backscroll does not work > anymore, so precious information is lost. > > Can you merge it with some other line? > > Just a [KDUMP] or so somewhere should be good enough. Or perhaps we should add it as a TAINT. Not all taints are bad. -- Steve