linux-kernel - Re: [PATCH] Linux Kernel Markers 0.20 for 2.6.17

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Date:	Tue, 17 Oct 2006 12:39:55 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Mathieu Desnoyers <compudj@...stal.dyndns.org>
CC:	Atsushi Nemoto <anemo@....ocn.ne.jp>, mbligh@...gle.com,
	fche@...hat.com, masami.hiramatsu.pt@...achi.com,
	prasanna@...ibm.com, akpm@...l.org, mingo@...e.hu,
	lethal@...ux-sh.org, linux-kernel@...r.kernel.org, jes@....com,
	zanussi@...ibm.com, richardj_moore@...ibm.com,
	michel.dagenais@...ymtl.ca, hch@...radead.org, gregkh@...e.de,
	tglx@...utronix.de, wcohen@...hat.com, ltt-dev@...fik.org,
	systemtap@...rces.redhat.com, alan@...rguk.ukuu.org.uk,
	karim@...rsys.com, pavel@...e.cz, joe@...ches.com,
	rdunlap@...otime.net, jrs@...ibm.com
Subject: Re: [PATCH] Linux Kernel Markers 0.20 for 2.6.17

Mathieu Desnoyers wrote:
> I guess the correct way to handle it will be to put a "used" attribute in the
> asm-generic/marker.h code, remove the unnecessary "unused" attribute in
> asm-powerpc/marker.h and tell people to upgrade their gcc when it is broken.
>   

It's subtle because it quietly drops the section with no other 
symptoms.  It could slip by unnoticed for quite a while.

> The other way around would be to make the macro "use" the structure somewhere
> without any impact.
>   
asm volatile("" : : "m" (thing));

    J
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