From mboxrd@z Thu Jan 1 00:00:00 1970 From: Linus Torvalds Subject: Re: [Bug #11342] Linux 2.6.27-rc3: kernel BUG at mm/vmalloc.c - bisected Date: Tue, 26 Aug 2008 16:47:48 -0700 (PDT) Message-ID: References: <48B313E0.1000501@hp.com> <200808261111.19205.rusty@rustcorp.com.au> <20080826183051.GB10925@cs181140183.pp.htv.fi> <20080826205916.GB11734@cs181140183.pp.htv.fi> Mime-Version: 1.0 Return-path: In-Reply-To: Sender: linux-embedded-owner@vger.kernel.org List-ID: Content-Type: TEXT/PLAIN; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Parag Warudkar Cc: 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 On Tue, 26 Aug 2008, Parag Warudkar wrote: > > 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? Well, by that argument, 1% of kernel size doesn't matter either.. 1% of a kernel for an embedded device is roughly 10-30kB or so depending on how small you make the configuration. If that matters, then so should the difference of 3-8 processes' kernel stack usage when you have a 4k/8k stack choice. And they _all_ will have at least 3-8 processes on them. Even the simplest ones will tend to have many more. Linus