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List:       linux-kernel
Subject:    Re: [PATCH] LKCD for 2.5.44 (3/8): kerntypes addition
From:       Christoph Hellwig <hch () infradead ! org>
Date:       2002-10-23 19:15:21
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On Wed, Oct 23, 2002 at 10:52:35AM -0700, Matt D. Robinson wrote:
> On Wed, 23 Oct 2002, Christoph Hellwig wrote:
> |>On Wed, Oct 23, 2002 at 02:44:04AM -0700, Matt D. Robinson wrote:
> |>> This adds kerntypes into the build so that symbols can be
> |>> extracted from a single build object in the kernel.  This
> |>> also modifies the install process (where applicable) to
> |>> copy the Kerntypes file along with the kernel and map.
> |>
> |>Why can't you directly link in init/kerntypes.o?
> 
> We wanted to keep the bloat down, even as far as the
> file size is concerned.  Some people have problems with
> making the kernel image larger than it already is.  If
> Kerntypes adds another 100K to the image, that isn't a
> good thing in the eyes of some people.

I meant using init/kerntypes.o directly instead of copying it
to Kerntypes.  But after looking more into the build process
I've now noticed that Kerntypes isn't actually linked into
vmlinux at all.  But as it's a separate file you don't need
the ifdef CONFIG_CRASH_DUMP - people not wanting on their
potentially small root filesystems just don't have to copy
it.  That would be the last ifdef on CONFIG_CRASH_DUMP, so
dump.o can now be loaded into any kernel with the patch
applied.  cool! :)

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