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Date:	Fri, 07 Dec 2007 09:59:32 +0900
From:	Tejun Heo <>
To:	Sam Ravnborg <>
CC:	Linux Kernel <>,,,,
Subject: Re: [PATCH] depmod: sort output according to modules.order

Sam Ravnborg wrote:
>> As I said, I don't think leaving duplicate lines in a file which will be
>> installed, distributed and used widely is the RTTD.  There can be other
>> uses of the file.  For example, the file can be parsed and modified by
>> distro specific module selector.  Sure, all of them can be made to deal
>> with dup entries but that's just not the right place to solve the problem.
> googled a bit.
> It looks like:
> awk '!x[$0]++'
> does the trick.

Great, that's much better.  I'll give it a try.

> So we can skip the C file (good thing).

Fully agreed.

>>> And this change in Makefile.lib seems bogus:
>>> +# make sure '/' follows subdirs
>>> +subdir-y       := $(patsubst %//,%/, $(addsuffix, /,$subdir-y))
>>> +subdir-m       := $(patsubst %//,%/, $(addsuffix, /,$subdir-m))
>> Some subdir-y|m entries have following / while others don't.  subdir-y|m
>> are lax about because either way it points to subdirectory.  The above
>> two lines are to normalize them so that there's no surprises when
>> concatenating file name to it.  I think it's a good idea to have the
>> above with or without other changes.
> With this change building modpost no longer worked so kbuild
> does not like the preceeding slashes. It could be fixed but thats
> another patch.

I don't really follow what you mean here.  Do you mean with the tailing
slash normalized, modpost doesn't work anymore?  Or with the
normalization removed?

>>> subdir-y and subdir-m does not point to directories that
>>> contains modules (built-in or not) so they can be ignored for modorder.
>> I didn't know that.  Is it forced that modules can't be put in
>> subdir-y|m directories?  What happens if I do that?
> I guess modules can be built as modules - but they can never be built-in.
> And if someone uses subdir-y to point to a dir with modules
> I would anyway cosider that a bug.

s/module/component which can be a dynamically loadable module or
built-in to the kernel/ in my original sentence.  I just couldn't find a
good word to use.  So, you're saying subdir-ym's can be dropped from
modorder, right?  It would be great if we can implement a safeguard to
check that subdif-ym's don't actually contain modules.


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