Received: by 10.223.148.5 with SMTP id 5csp7907981wrq; Thu, 18 Jan 2018 10:58:15 -0800 (PST) X-Google-Smtp-Source: ACJfBovofxIw3JKIGtzoCEMton7nwVPH3KFIOrCDNZsY0Xzj0Y2AMIan7ykRb5JWHXHBGxvKk6+q X-Received: by 10.99.188.17 with SMTP id q17mr24013013pge.43.1516301895135; Thu, 18 Jan 2018 10:58:15 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1516301895; cv=none; d=google.com; s=arc-20160816; b=A6i4wWyT9sObOnNEAsYZDMgazl0pUQFNQUyArg0LVgNSySabD7Rnptnp2nm8l2PfFB 4B45Dh8zS+NDDquZgx/veo+6bTVja3Jo3TPt6LC1fWXxdt0uBC0SlhyCT+pHI2WRfkKR HK6qsCjUyRbonu+Z/5ZhFNKcGkx9dTn6Mv8ChbncnQrH7vsj5Q31+bJzM35Gp7Zmt3ee dlIzoNFQzywSg0VG2xdO2xha4sef0A7gGn1pdXl1zPj9bNSom2PTWuKFF8Ol2EEf+J/9 ghePIYQibCtgQjDYv8tjm1l6sfXWa8K+rBMirjjptQheEluHdEVCtK126OGEct9jbKOr ePQg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:subject:cc:to:from:date :dmarc-filter:arc-authentication-results; bh=fCjCFQZPhfU/DB122efygPjHztU+gr7B6OBRvBW/5TY=; b=cs4gZHcFoaan7Yu41+0+sCl7ATnnbxB9TMnEPm953HTPBzPGLqudWtRyJifaeKdDjw urWJP4GXa6GYfg7yf9hJHGzoMBmIU0llLJ/9ikjl3RpDlWOot+GQ7RcuU0wI1voHB6QP pky0aMksisumTqMusdO3qXu3akwicYL8XYoU4iEhgBIegKzX0fvOfHBZQXXgNgV8BAUr 40PhQW7GPRzlOCgdXwgA/4G0rQAYQZ5E0VA0QFYQkg3zD5yc7MTB+lMbRpB5vaeY+P+m EEPs2/XwU+sc+4kmvn2y5b1DhduGhwzm21bJlDoiH1W8uBdB9hTzxyrfsYjOMK6b8S8q 8R5Q== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id c7-v6si113201plo.545.2018.01.18.10.58.01; Thu, 18 Jan 2018 10:58:15 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932595AbeARS5I (ORCPT + 99 others); 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 Received: from gandalf.local.home (cpe-172-100-180-131.stny.res.rr.com [172.100.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id DAE1D21742; Thu, 18 Jan 2018 18:57:05 +0000 (UTC) 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 Precedence: bulk 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