From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763495AbZBYW0i (ORCPT ); Wed, 25 Feb 2009 17:26:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1763304AbZBYW0J (ORCPT ); Wed, 25 Feb 2009 17:26:09 -0500 Received: from metis.ext.pengutronix.de ([92.198.50.35]:34802 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761081AbZBYW0I (ORCPT ); Wed, 25 Feb 2009 17:26:08 -0500 Date: Wed, 25 Feb 2009 23:26:04 +0100 From: Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= To: Mike Frysinger Cc: Bernd Schmidt , linux-kernel@vger.kernel.org, Steven Rostedt , Peter Zijlstra , Ingo Molnar Subject: Re: [PATCH] make CALLER_ADDRx overwriteable Message-ID: <20090225222604.GA26938@pengutronix.de> References: <1235600169-26912-1-git-send-email-u.kleine-koenig@pengutronix.de> <8bd0f97a0902251420k7bd00c4fhda34004d1993975a@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <8bd0f97a0902251420k7bd00c4fhda34004d1993975a@mail.gmail.com> User-Agent: Mutt/1.5.18 (2008-05-17) X-SA-Exim-Connect-IP: 2001:6f8:1178:2:215:17ff:fe12:23b0 X-SA-Exim-Mail-From: ukl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 25, 2009 at 05:20:13PM -0500, Mike Frysinger wrote: > On Wed, Feb 25, 2009 at 17:16, Uwe Kleine-König wrote: > > The current definition of CALLER_ADDRx isn't suitable for all platforms. > > E.g. for ARM __builtin_return_address(N) doesn't work for N > 0 > > afaik, the same applies to the Blackfin port. we looked at > implementing __builtin_return_address(N) and decided it wasnt worth > the hassle. I think the same applies for ARM: http://thread.gmane.org/gmane.comp.gcc.devel/103804 Best regards Uwe -- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Strasse 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |