Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752818AbYHZXqi (ORCPT ); Tue, 26 Aug 2008 19:46:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751931AbYHZXq1 (ORCPT ); Tue, 26 Aug 2008 19:46:27 -0400 Received: from smtp5.pp.htv.fi ([213.243.153.39]:41768 "EHLO smtp5.pp.htv.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751618AbYHZXq0 (ORCPT ); Tue, 26 Aug 2008 19:46:26 -0400 Date: Wed, 27 Aug 2008 02:45:37 +0300 From: Adrian Bunk To: David VomLehn Cc: Parag Warudkar , Linus Torvalds , Adrian Bunk , Rusty Russell , "Alan D. Brunelle" , "Rafael J. Wysocki" , Linux Kernel Mailing List , Kernel Testers List , Andrew Morton , Arjan van de Ven , Ingo Molnar , linux-embedded@vger.kernel.org Subject: Re: [Bug #11342] Linux 2.6.27-rc3: kernel BUG at mm/vmalloc.c - bisected Message-ID: <20080826234537.GD11734@cs181140183.pp.htv.fi> References: <48B313E0.1000501@hp.com> <200808261111.19205.rusty@rustcorp.com.au> <20080826183051.GB10925@cs181140183.pp.htv.fi> <20080826205916.GB11734@cs181140183.pp.htv.fi> <48B48B11.8050000@cisco.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <48B48B11.8050000@cisco.com> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1682 Lines: 43 On Tue, Aug 26, 2008 at 04:00:33PM -0700, David VomLehn wrote: > Parag Warudkar wrote: >> On Tue, Aug 26, 2008 at 5:04 PM, Linus Torvalds >> wrote: >> >>> And embedded people (the ones that might care about 1% code size) are the >>> ones that would also want smaller stacks even more! >> >> This is something I never understood - embedded devices are not going >> to run more than a few processes and 4K*(Few Processes) >> IMHO is not worth a saving now a days even in embedded world given >> falling memory prices. Or do I misunderstand? > > Embedded applications span a huge range of sizes, from the very small > devices to which you refer, to quite complex devices. The cable settop > boxes we develop have over a hundred interrupt sources, typically run > 250-300 threads, and have 192+ MiB of memory. For all that, we are very > cost sensitive and are under constant pressure to come up with reliable > ways to save memory. As you say correctly the term "embedded" gets used for many different devices. And if you have 192+ MiB of memory you have so much that all these kernel size discussions don't really matter. > David VomLehn cu Adrian -- "Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed -- 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/