From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757435Ab3BRCFk (ORCPT ); Sun, 17 Feb 2013 21:05:40 -0500 Received: from mail-pa0-f46.google.com ([209.85.220.46]:55515 "EHLO mail-pa0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757398Ab3BRCFj (ORCPT ); Sun, 17 Feb 2013 21:05:39 -0500 Date: Sun, 17 Feb 2013 18:05:57 -0800 From: Greg KH To: Jonathan Andrews Cc: anish kumar , linux-kernel@vger.kernel.org Subject: Re: Stupid user with user-space questions, matrix LED driving with user space code only. Message-ID: <20130218020557.GA27667@kroah.com> References: <1361025476.4271.36.camel@jonspc> <1361082134.16206.24.camel@anish-Inspiron-N5050> <1361111844.14757.29.camel@jonspc> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1361111844.14757.29.camel@jonspc> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Feb 17, 2013 at 02:37:24PM +0000, Jonathan Andrews wrote: > From a user perspective it seems a bit crap to have to change the kernel > if you have a workload that preemption is harmful to. > In the case of something like the Raspberry Pi changing the kernel if > the distribution has not done the work for me sounds like real effort. > The kernel is tied to binary obscurity from broadcom... To build I need > a working cross compiler, toolchain, kernel sources, Pi specific patches > then to get everything in the correct place on an SD card containing two > filesystems. Its possible but its not going to "just work" at my skill > level.... As you can not boot a kernel.org kernel on the RPI platform just yet, there's very little that the kernel.org community can do here to help you out. I suggest you go take this up with the developers whom you got this specific kernel build from, there's nothing we can do here about it. Best of luck, greg k-h