From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S271365AbTGWWa0 (ORCPT ); Wed, 23 Jul 2003 18:30:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S271367AbTGWWaZ (ORCPT ); Wed, 23 Jul 2003 18:30:25 -0400 Received: from crosslink-village-512-1.bc.nu ([81.2.110.254]:4847 "EHLO lxorguk.ukuu.org.uk") by vger.kernel.org with ESMTP id S271365AbTGWWaR (ORCPT ); Wed, 23 Jul 2003 18:30:17 -0400 Subject: Re: [uClinux-dev] Kernel 2.6 size increase - get_current()? From: Alan Cox To: Bernardo Innocenti Cc: Christoph Hellwig , "David S. Miller" , uclinux-dev@uclinux.org, Linux Kernel Mailing List In-Reply-To: <200307240035.38502.bernie@develer.com> References: <200307232046.46990.bernie@develer.com> <20030723132256.58ee50e7.davem@redhat.com> <20030723212755.A608@infradead.org> <200307240035.38502.bernie@develer.com> Content-Type: text/plain Content-Transfer-Encoding: 7bit Organization: Message-Id: <1058999786.6890.21.camel@dhcp22.swansea.linux.org.uk> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.2 (1.2.2-5) Date: 23 Jul 2003 23:37:22 +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mer, 2003-07-23 at 23:35, Bernardo Innocenti wrote: > It's a sequence of 6 instructions, 18 bytes long, clobbering 4 registers. > The compiler cannot see around it. > This takes 18*11 = 198 bytes just for invoking the 'current' > macro so many times. Unless you support SMP I'm not sure I understand why m68k nommu changed from using a global for current_task ?