From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by mx1.pokylinux.org (Postfix) with ESMTP id 11BCD4C800A8 for ; Fri, 18 Feb 2011 11:53:24 -0600 (CST) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP; 18 Feb 2011 09:53:21 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.62,188,1297065600"; d="scan'208";a="888981023" Received: from unknown (HELO [10.255.12.60]) ([10.255.12.60]) by fmsmga001.fm.intel.com with ESMTP; 18 Feb 2011 09:53:00 -0800 Message-ID: <4D5EB1FB.9030704@linux.intel.com> Date: Fri, 18 Feb 2011 09:52:59 -0800 From: Darren Hart User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101208 Lightning/1.0b2 Thunderbird/3.1.7 MIME-Version: 1.0 To: "poky@yoctoproject.org" Subject: Minimal images: kernel config X-BeenThere: poky@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Poky build system developer discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Feb 2011 17:53:24 -0000 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit I've been getting more and more questions regarding flash footprint, memory footprint, and boot time. All of these fall under the "minimal image" heading in my head. Currently, poky-image-minimal is a simple subset of poky-image-sato. It uses busybox, but is still dynamically linked and uses the same somewhat-generic kernel build. By somewhat-generic I mean we have named features that often cover more drivers than are stricly necessary for a given board (usb-net comes to mind). I'd like to see minimal become a truly minimal image from both the userspace and kernel side point of view. Here's my take on this. From userspace this means uclibc and a staticly linked busybox. From the kernel this means a static build (no modules) with nothing more than is required for the board's built-in peripherals to function, with the possible exception of something like usb-storage. I'd like to see a < 10M flash size and a <8M memory footprint. Thoughts on this direction? -- Darren Hart Intel Open Source Technology Center Yocto Project - Linux Kernel