Re: [PATCH 1/5] vmlinux.lds.h: Include *(.text.*) in TEXT_TEXT

From: Tim Abbott <tabbott@ksplice.com>
To: Matt Fleming <matt@console-pimps.org>
Cc: linux-arch@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
	linux-kernel@vger.kernel.org, Sam Ravnborg <sam@ravnborg.org>,
	Michal Marek <mmarek@suse.cz>,
	Denys Vlasenko <vda.linux@googlemail.com>,
	James Bottomley <James.Bottomley@HansenPartnership.com>
Subject: Re: [PATCH 1/5] vmlinux.lds.h: Include *(.text.*) in TEXT_TEXT
Date: Mon, 14 Jun 2010 18:21:07 -0400 (EDT)	[thread overview]
Message-ID: <alpine.DEB.1.10.1006141534490.1248@dr-wily.mit.edu> (raw)
In-Reply-To: <87y6ehxvby.fsf@linux-g6p1.site>

On Mon, 14 Jun 2010, Matt Fleming wrote:

> Do these special kernel sections include things like the parisc
> .text.do_softirq, .text.sys_exit, etc? James raised a good objection to
> the parisc patch of this series. I'm guessing most people saw it already
> but I'll paste it here for reference,
> 
>     This would destroy all of the named parisc text ordering we do above the
>     removed line because now you'd have swept up all the function sections
>     before we get to them, won't it?
> 
>     The ordering is an execution speed up on 32 bit systems because our
>     relative jump is so short.
> 
> Will you changes handle this OK?

I think I addressed this in my reply to James just now, but to be super 
clear, this -ffunction-sections plan involves renaming .text.do_softirq to 
.text..do_softirq (etc.) first.

	-Tim Abbott