Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752416AbYKRJxU (ORCPT ); Tue, 18 Nov 2008 04:53:20 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751341AbYKRJxK (ORCPT ); Tue, 18 Nov 2008 04:53:10 -0500 Received: from bombadil.infradead.org ([18.85.46.34]:60973 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750869AbYKRJxJ (ORCPT ); Tue, 18 Nov 2008 04:53:09 -0500 Date: Tue, 18 Nov 2008 04:53:05 -0500 From: Christoph Hellwig To: Benjamin Herrenschmidt Cc: Steven Rostedt , LKML , Paul Mackerras , linuxppc-dev@ozlabs.org, Linus Torvalds , Andrew Morton , Ingo Molnar , Thomas Gleixner Subject: Re: Large stack usage in fs code (especially for PPC64) Message-ID: <20081118095305.GA24119@infradead.org> References: <1226963005.7178.248.camel@pasglop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1226963005.7178.248.camel@pasglop> User-Agent: Mutt/1.5.18 (2008-05-17) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 849 Lines: 18 On Tue, Nov 18, 2008 at 10:03:25AM +1100, Benjamin Herrenschmidt wrote: > On Mon, 2008-11-17 at 15:34 -0500, Steven Rostedt wrote: > > Note, I was using a default config that had CONFIG_IRQSTACKS off and > > CONFIG_PPC_64K_PAGES on. > > For one, we definitely need to turn IRQSTACKS on by default ... In fact, > I'm pondering just removing the option. It shouldn't be a user-visible option. It shouldn't on x86 either, but there it always gets into the ideological 4k stacks flameware so people usually gave up after a while instead of doing the sensibke 8k + irqstacks by default, 4k as an option.. -- 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/