From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751784AbcGRIIn (ORCPT ); Mon, 18 Jul 2016 04:08:43 -0400 Received: from mail.skyhub.de ([78.46.96.112]:49190 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751426AbcGRIIl (ORCPT ); Mon, 18 Jul 2016 04:08:41 -0400 Date: Mon, 18 Jul 2016 10:08:46 +0200 From: Borislav Petkov To: Dave Young Cc: Andrew Morton , LKML , Franck Bui , Greg Kroah-Hartman , Ingo Molnar , Linus Torvalds , Peter Zijlstra , Steven Rostedt , Uwe =?utf-8?Q?Kleine-K=C3=B6nig?= Subject: Re: [PATCH -v4 2/2] printk: Add kernel parameter to control writes to /dev/kmsg Message-ID: <20160718080846.GC22689@nazgul.tnic> References: <1467969530-5215-3-git-send-email-bp@alien8.de> <20160715062109.GA4515@dhcp-128-65.nay.redhat.com> <20160715124523.GA26501@nazgul.tnic> <20160716104425.GB3031@dhcp-128-65.nay.redhat.com> <20160717054035.GA16383@nazgul.tnic> <20160718021809.GA6310@dhcp-128-65.nay.redhat.com> <20160718044407.GA20395@nazgul.tnic> <20160718052032.GA7911@dhcp-128-65.nay.redhat.com> <20160718072107.GA22689@nazgul.tnic> <20160718073845.GA9088@dhcp-128-65.nay.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20160718073845.GA9088@dhcp-128-65.nay.redhat.com> User-Agent: Mutt/1.6.0 (2016-04-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jul 18, 2016 at 03:38:45PM +0800, Dave Young wrote: > no printk.devkmsg= on kernel cmdline > -> unlocked, default is off, writing to /dev/kmsg is forbidded > -> usespace set sysctl printk.devkmsg=on > -> writing to /dev/kmsg is allowed. And that helps how exactly? I don't understand why you're harping on the ratelimiting. It is a sane default for the *default* case. Userspace should switch to its own logging scheme when it has started anyway. If you still want to see *all* messages, you boot with "=on" or set it through sysctl. So what is the problem?! -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply. --