Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933472AbYCFOqE (ORCPT ); Thu, 6 Mar 2008 09:46:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757999AbYCFOpy (ORCPT ); Thu, 6 Mar 2008 09:45:54 -0500 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:2000 "EHLO spitz.ucw.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1758244AbYCFOpy (ORCPT ); Thu, 6 Mar 2008 09:45:54 -0500 Date: Wed, 5 Mar 2008 20:48:01 +0100 From: Pavel Machek To: Suresh Siddha Cc: mingo@elte.hu, hpa@zytor.com, tglx@linutronix.de, andi@firstfloor.org, hch@infradead.org, linux-kernel@vger.kernel.org, Arjan van de Ven Subject: Re: [patch 2/2] x86, fpu: lazy allocation of FPU area - v3 Message-ID: <20080305194801.GB4386@ucw.cz> References: <20080303230335.892214000@linux-os.sc.intel.com> <20080303230336.042604000@linux-os.sc.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080303230336.042604000@linux-os.sc.intel.com> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 701 Lines: 16 On Mon 2008-03-03 15:02:46, Suresh Siddha wrote: > Only allocate the FPU area when the application actually uses FPU, i.e., in the > first lazy FPU trap. This could save memory for non-fpu using apps. How many such apps are on your system, and how much does this 'optimalization' cost? ISTR glibc always using FPU...? -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- 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/