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

From: Matt Fleming
Date: Mon Jun 14 2010 - 15:34:01 EST

On Mon, 14 Jun 2010 10:32:46 -0400 (EDT), Tim Abbott <tabbott@xxxxxxxxxxx> wrote:
> I was planning to submit in the next couple weeks a change that adds
> support for building the kernel with -ffunction-sections -fdata-sections,
> which would have as a piece of it adding to TEXT_TEXT the following
> expression:
> *(.text.[A-Za-z$_]*) /* handle -ffunction-sections */\
> which should match the sections generated by -ffunction-sections
> but not the kernel's special sections which now all have names of the form
> I suspect after that change, the cleanup of deleting .text.*
> from the various architecture linker scripts that reference it should be
> possible.

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?
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