Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758361AbXKTXWx (ORCPT ); Tue, 20 Nov 2007 18:22:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752574AbXKTXWp (ORCPT ); Tue, 20 Nov 2007 18:22:45 -0500 Received: from rtr.ca ([76.10.145.34]:1153 "EHLO mail.rtr.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752334AbXKTXWo (ORCPT ); Tue, 20 Nov 2007 18:22:44 -0500 Message-ID: <47436C43.6010200@rtr.ca> Date: Tue, 20 Nov 2007 18:22:43 -0500 From: Mark Lord User-Agent: Thunderbird 2.0.0.9 (X11/20071031) MIME-Version: 1.0 To: Ingo Molnar Cc: Arjan van de Ven , Nick Piggin , Andrew Morton , Linus Torvalds , Linux Kernel , "H. Peter Anvin" , Thomas Gleixner Subject: Re: CONFIG_IRQBALANCE for 64-bit x86 ? References: <47425EA5.7000607@rtr.ca> <200711201517.16171.nickpiggin@yahoo.com.au> <20071119213727.16d5917b@laptopd505.fenrus.org> <200711201837.39664.nickpiggin@yahoo.com.au> <20071120064747.2a8036cd@laptopd505.fenrus.org> <20071120220110.GF24156@elte.hu> In-Reply-To: <20071120220110.GF24156@elte.hu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1566 Lines: 37 Ingo Molnar wrote: > * Arjan van de Ven wrote: > >> kernel or kernel source? If there was a good place in the kernel >> source I'd not be against moving irqbalance there. [...] > > would this be a good case study to use klibc and start up irqbalanced > automatically? I'd love it if we moved more of the 'system support' > userspace into the kernel proper, to keep it under control. (and to > simplify the compatibility and QA matrix) .. Perhaps, but this also violates the principle that the kernel should just *work* with sensible defaults. I don't use an initrd, or an initramfs, and have no intention of ever doing so. I *like* having a single boot image with no unneeded/unwanted complexity. It's only recently that I've even come round to using some loadable modules for things like network drivers -- I prefer a single image for as much as possible (like Linus there). If putting a C-library and utilities "into the kernel" still leaves me with a single image file, then.. maybe. Seems clumsy, though. Handling interrupts efficiently is a very basic, core function for any operating system kernel. With CONFIG_IRQBALANCE=y, Linux is fine at present. But that's not available in 64-bit mode, so we have a deficiency there. I guess I'll patch it into my kernels soon-ish. Cheers - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/