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=-2.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIMWL_WL_MED, URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham 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 3E67EECDFB8 for ; Wed, 18 Jul 2018 03:27:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E988C2075A for ; Wed, 18 Jul 2018 03:27:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=osandov-com.20150623.gappssmtp.com header.i=@osandov-com.20150623.gappssmtp.com header.b="e4ME7xJ6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E988C2075A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=osandov.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726120AbeGRED1 (ORCPT ); Wed, 18 Jul 2018 00:03:27 -0400 Received: from mail-pl0-f68.google.com ([209.85.160.68]:36064 "EHLO mail-pl0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725721AbeGRED0 (ORCPT ); Wed, 18 Jul 2018 00:03:26 -0400 Received: by mail-pl0-f68.google.com with SMTP id e11-v6so1369501plb.3 for ; Tue, 17 Jul 2018 20:27:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=osandov-com.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=Z9rPg5loTYRmcudGyTlbBdX3Ff5Yu8jkM15opGehHRw=; b=e4ME7xJ6CcpAyAkSe7EItHvJjlIdhvgVfVosNwOwlrgwqCTEfnPyiU4LuPWr3K9aFQ Ipsepd1eSDnAQU9tRlRRPcV5AZzdgo+2Zk+bLuwI5CA83asr+GrZAL1zlDfVrjnr8Y22 Hqije6ACnOu8ZqNoBXOnD5HbdaCizjAhn/Y0h5TRCWo2THCzmGy3x4wozFDpI2f/uEz6 j2xT41poxYrtCIwjTGYhyErZy7yKQP7OfXIMjYHy2ANslubHCIBEoZDFjUqIasHjDQGx 6CLutSn0o421RBU2vPzl9VUX4VIAFZh98P6j+yynGjdrO298srs2bQbjuoSk9CObaYzV LIbA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=Z9rPg5loTYRmcudGyTlbBdX3Ff5Yu8jkM15opGehHRw=; b=QP8s5XJBW7bdTK8Wlx6e74s4JTh0QqLq1LpexADcXpCewhiFFQyhnIhUZev6TpShGT NdfDGxifXJkjWCEuDJsXijF1U/6zN6NOa87KohuAicNO0zSby4TJhzSlKzNTa/QnAT9m fBIsUDv2AkkOo9Skbkdl83X3Ib0tJAsuQ3aEtQcYSntgcJjTS7SQUMIItsSG69f0qPra zFXP6fErcbSUviqZhQzTh8OCnYHDnPXd86JxkLBFcaF9l8Geelspupt3PfYZMzUv9wYZ 9brL1KMsaBkZvexrZSfm81zpJiPKbFPyNXAMFopj3Rknm+ktoqv5zsl6FOd4KsJ7+EC4 2eAw== X-Gm-Message-State: AOUpUlFtiQRkX/kgxjVnmjlWdpv/jcRQZ3DUoPriCZA8774sr5CsB+J/ 14AOzK51ukbItOmfAK4t9ZtlqA== X-Google-Smtp-Source: AAOMgpcjn2unsRTTQ0k8lDXfar9p2MoezAJzPyBW4JxjCzE+172B6kARe5DyGEWEZVdxex4j1HyNIQ== X-Received: by 2002:a17:902:8d98:: with SMTP id v24-v6mr4197589plo.250.1531884463761; Tue, 17 Jul 2018 20:27:43 -0700 (PDT) Received: from vader ([2620:10d:c090:180::1:bc4f]) by smtp.gmail.com with ESMTPSA id 86-v6sm4518508pfh.0.2018.07.17.20.27.42 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 17 Jul 2018 20:27:43 -0700 (PDT) Date: Tue, 17 Jul 2018 20:27:42 -0700 From: Omar Sandoval To: Andrew Morton Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Alexey Dobriyan , Eric Biederman , James Morse , Bhupesh Sharma , kernel-team@fb.com Subject: Re: [PATCH v2 7/7] proc/kcore: add vmcoreinfo note to /proc/kcore Message-ID: <20180718032742.GC29351@vader> References: <19c55add0fd15854798dde00d93350d76034896d.1531440458.git.osandov@fb.com> <20180717194421.a5430cf03aad12a9e40e65f4@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180717194421.a5430cf03aad12a9e40e65f4@linux-foundation.org> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 17, 2018 at 07:44:21PM -0700, Andrew Morton wrote: > On Thu, 12 Jul 2018 17:09:39 -0700 Omar Sandoval wrote: > > > From: Omar Sandoval > > > > The vmcoreinfo information is useful for runtime debugging tools, not > > just for crash dumps. A lot of this information can be determined by > > other means, but this is much more convenient. > > > > What effect does this have upon the overall size of the dump file? About 2 kB on my machine, and no more than one page + the few bytes of extra headers.