Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752628AbYKGOES (ORCPT ); Fri, 7 Nov 2008 09:04:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751390AbYKGOEH (ORCPT ); Fri, 7 Nov 2008 09:04:07 -0500 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:51389 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751019AbYKGOEF (ORCPT ); Fri, 7 Nov 2008 09:04:05 -0500 Date: Fri, 7 Nov 2008 09:04:03 -0500 (EST) From: Steven Rostedt X-X-Sender: rostedt@gandalf.stny.rr.com To: Matt Fleming cc: Peter Zijlstra , LKML , mingo@elte.hu Subject: Re: [PATCH] ftrace: Allow section alignment In-Reply-To: <5ff4a1e50811070559s1cbc4420ie600e0004b5e7309@mail.gmail.com> Message-ID: References: <5ff4a1e50811070512v410e623ax60e8a65b169f800@mail.gmail.com> <1226063896.2697.28.camel@twins> <5ff4a1e50811070559s1cbc4420ie600e0004b5e7309@mail.gmail.com> User-Agent: Alpine 1.10 (DEB 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1017 Lines: 28 On Fri, 7 Nov 2008, Matt Fleming wrote: > > I've tried to explain the bug better in the attached patch. The issue > is not that there were gaps in __mcount_loc, rather that the addresses > in __mcount_loc were not aligned on a 4-byte boundary by the > assembler. Unaligned accesses are not supported by our architecture > and an alignment of 1-byte will likely lead to performance loss on > architectures that do support them. This is what I was looking for ;-) Yes, I was just telling Peter on IRC, that this might just be an architecture request. Which I find as a legitimate reason. But because there was no mention of that in the change log, I would have to NACK it. Ingo, I'll pull this in my tree and test it first. Then I'll pass it off to you. -- Steve -- 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/