From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 24611CA90AF for ; Wed, 13 May 2020 12:05:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E0E4C206CC for ; Wed, 13 May 2020 12:05:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="jIKglLNn" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732070AbgEMMFH (ORCPT ); Wed, 13 May 2020 08:05:07 -0400 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:25210 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728165AbgEMMFG (ORCPT ); Wed, 13 May 2020 08:05:06 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1589371505; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=rTvNfxEcdBjM7+rUnpuyw83WRb+cCXiZfeWKdT61OtU=; b=jIKglLNnAY7dYXnkEMtQevHfd6EjBKJPbIYvYNaDTaWQ3Q7hjPcgfC1sWRGyfvEWgdSIjV T/31wDTZigE/KOlA6eb2KFG1ZGehLqCoyarKN+njKSnSQ/is3Qrd02HEDfo5keHCWXSJVi XgzLynsKG4mXMSRg24yDGqXeePZP+Xg= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-249-PV_CE75mORq-Nt6Zud0-dw-1; Wed, 13 May 2020 08:05:03 -0400 X-MC-Unique: PV_CE75mORq-Nt6Zud0-dw-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 8666B1009447; Wed, 13 May 2020 12:05:01 +0000 (UTC) Received: from prarit.bos.redhat.com (prarit-guest.7a2m.lab.eng.bos.redhat.com [10.16.222.26]) by smtp.corp.redhat.com (Postfix) with ESMTP id 80CEC619C3; Wed, 13 May 2020 12:05:00 +0000 (UTC) Subject: Re: [PATCH v2 0/3] printk: replace ringbuffer To: John Ogness , Petr Mladek Cc: Peter Zijlstra , Sergey Senozhatsky , Sergey Senozhatsky , Steven Rostedt , Linus Torvalds , Greg Kroah-Hartman , Andrea Parri , Thomas Gleixner , kexec@lists.infradead.org, linux-kernel@vger.kernel.org References: <20200501094010.17694-1-john.ogness@linutronix.de> From: Prarit Bhargava Message-ID: <8981615b-314a-1e55-1635-d17e3cbc544e@redhat.com> Date: Wed, 13 May 2020 08:05:00 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <20200501094010.17694-1-john.ogness@linutronix.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/1/20 5:40 AM, John Ogness wrote: > Hello, > > Here is a v2 for the first series to rework the printk subsystem. The > v1 and history are here [0]. This first series only replaces the > existing ringbuffer implementation. No locking is removed. No > semantics/behavior of printk are changed. > > The VMCOREINFO is updated. RFC patches for the external tools > crash(8) [1] and makedumpfile(8) [2] have been submitted that allow > the new ringbuffer to be correctly read. > > This series is in line with the agreements [3] made at the meeting > during LPC2019 in Lisbon, with 1 exception: support for dictionaries > will not be discontinued [4]. Dictionaries are stored in a separate > buffer so that they cannot interfere with the human-readable buffer. > Hey John, I tested this on two 128-cpu ppc64le power8 boxes, and a 64 core x86_64 box using your prb-test testsuite with the latest upstream kernel. The tests ran successfully for ~16 hours without any problems. P. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120] helo=us-smtp-1.mimecast.com) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jYqAC-0002FA-Gw for kexec@lists.infradead.org; Wed, 13 May 2020 12:07:06 +0000 Subject: Re: [PATCH v2 0/3] printk: replace ringbuffer References: <20200501094010.17694-1-john.ogness@linutronix.de> From: Prarit Bhargava Message-ID: <8981615b-314a-1e55-1635-d17e3cbc544e@redhat.com> Date: Wed, 13 May 2020 08:05:00 -0400 MIME-Version: 1.0 In-Reply-To: <20200501094010.17694-1-john.ogness@linutronix.de> Content-Language: en-US List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: John Ogness , Petr Mladek Cc: Andrea Parri , Sergey Senozhatsky , Peter Zijlstra , Greg Kroah-Hartman , kexec@lists.infradead.org, linux-kernel@vger.kernel.org, Steven Rostedt , Sergey Senozhatsky , Thomas Gleixner , Linus Torvalds On 5/1/20 5:40 AM, John Ogness wrote: > Hello, > > Here is a v2 for the first series to rework the printk subsystem. The > v1 and history are here [0]. This first series only replaces the > existing ringbuffer implementation. No locking is removed. No > semantics/behavior of printk are changed. > > The VMCOREINFO is updated. RFC patches for the external tools > crash(8) [1] and makedumpfile(8) [2] have been submitted that allow > the new ringbuffer to be correctly read. > > This series is in line with the agreements [3] made at the meeting > during LPC2019 in Lisbon, with 1 exception: support for dictionaries > will not be discontinued [4]. Dictionaries are stored in a separate > buffer so that they cannot interfere with the human-readable buffer. > Hey John, I tested this on two 128-cpu ppc64le power8 boxes, and a 64 core x86_64 box using your prb-test testsuite with the latest upstream kernel. The tests ran successfully for ~16 hours without any problems. P. _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec