From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755573AbaIDVw6 (ORCPT ); Thu, 4 Sep 2014 17:52:58 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:56333 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755068AbaIDVw4 (ORCPT ); Thu, 4 Sep 2014 17:52:56 -0400 Date: Thu, 4 Sep 2014 14:52:11 -0700 From: Greg KH To: "Luis R. Rodriguez" Cc: Dmitry Torokhov , Arjan van de Ven , "Luis R. Rodriguez" , falcon@meizu.com, tiwai@suse.de, tj@kernel.org, linux-kernel@vger.kernel.org, oleg@redhat.com, akpm@linux-foundation.org, penguin-kernel@i-love.sakura.ne.jp, joseph.salisbury@canonical.com, bpoirier@suse.de, Mel Gorman Subject: Re: [RFC v1 0/3] driver-core: add asynch module loading support Message-ID: <20140904215211.GB738@kroah.com> References: <1409475800-17573-1-git-send-email-mcgrof@do-not-panic.com> <540334B2.7000009@linux.intel.com> <20140831175040.GA17827@core.coreip.homeip.net> <5403767E.1020107@linux.intel.com> <20140831193140.GA12678@kroah.com> <20140831201407.GB19881@core.coreip.homeip.net> <20140831204035.GA4793@kroah.com> <20140904212118.GB3347@wotan.suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140904212118.GB3347@wotan.suse.de> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Sep 04, 2014 at 11:21:18PM +0200, Luis R. Rodriguez wrote: > I still believe its a good approach if we wanted to scale it but that > would require the desire to do so, I obviously considered it worthwhile > as I shaved off at least ~1 second off kernel boot time when doing an > original proof of concept and only doing drivers, and taking into > consideration my kenrel takes ~5 seconds before userspace is reached. Sidenote, something is really wrong with your hardware or configuration if it takes 5 seconds to get to userspace on a modern system these days. Everything[1] I run is in the sub-second boot time before userspace is hit, and everything boots to full graphics mode in less than 5 seconds. The long-pole is by far, the bios/uefi these days. I think you need new hardware, or a better kernel .config file :) > I'll toss this in the bin for now though and send something based on > Tejun's approach shortly! That would be great, thanks for doing this. greg k-h [1] A wide range of laptops and server/build boxes, some 3+ years old, this isn't just new hardware by any means.