From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 7A51B279 for ; Fri, 31 Jul 2015 18:12:48 +0000 (UTC) Received: from out1-smtp.messagingengine.com (out1-smtp.messagingengine.com [66.111.4.25]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 04211241 for ; Fri, 31 Jul 2015 18:12:47 +0000 (UTC) Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailout.nyi.internal (Postfix) with ESMTP id 30CF4208BF for ; Fri, 31 Jul 2015 14:12:47 -0400 (EDT) Date: Fri, 31 Jul 2015 11:12:45 -0700 From: Greg KH To: Bjorn Helgaas Message-ID: <20150731181245.GA5969@kroah.com> References: <55BAE39F.9060705@oracle.com> <20150731165915.GA4995@roeck-us.net> <20150731170825.GA2721@kroah.com> <20150731171500.GC4995@roeck-us.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Cc: Sasha Levin , "ksummit-discuss@lists.linuxfoundation.org" Subject: Re: [Ksummit-discuss] Self nomination List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Fri, Jul 31, 2015 at 12:51:53PM -0500, Bjorn Helgaas wrote: > I prefer that a dmesg collected in the simplest possible way, with no > special config or boot flags, be as useful as possible. So converting > to dynamic debug requires much more thought about which messages > should be always printed and which should become dynamic. Why would a debugging message ever not be dynamic? They are there for you to use, and turn off when you are done. If you want a user to report the output of them, then of course they should be dynamic so they can just write a line to a debugfs file and then start seeing them, they shouldn't be seeing them all the time, and they should never require a rebuild of the kernel to see them (which is why we deleted CONFIG_USB_DEBUG). thanks, greg k-h