linux-kernel - Re: Status of function-sections work?

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Message-Id: <201106071011.15114.vda.linux@googlemail.com>
Date:	Tue, 7 Jun 2011 10:11:15 +0200
From:	Denys Vlasenko <vda.linux@...glemail.com>
To:	Josh Triplett <josh@...htriplett.org>, linux-kernel@...r.kernel.org
Subject: Re: Status of function-sections work?

On Monday 06 June 2011 03:15, Josh Triplett wrote:
> Hello,
> 
> I found your work in 2010 on using function-sections and data-sections
> to eliminate unused code in the kernel.  I'd like to make use of this
> work to try to build an extremely space-constrained kernel.
> 
> It looks like a few of your patches made it into the kernel, but most of
> the linker script changes don't seem to have made it in.  I wanted to
> find out the status of this work.  Do you still have this working?  Do
> you have versions of your patches for current Linux?

parisc uses ^ in some identifiers. Therefore we need something like
[A-Za-z0-9_$^]* in linker script. This wasn't working with GNU ld -
^ is not a valid char for pattern. Use of more general [!.]*
was also impossible - ! is not a valid char too.

Therefore I asked binutils people to fix this (they agreed) and
decided to wait for a fixed binutils to be released.

> Have you considered re-submitting?

Yes, I need to do this...

-- 
vda

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