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SubjectRe: Userspace ACPI interpreter ( was RE: [ACPI] [RFC] dev_acpi: support for userspace access to acpi)
> [ It would be sort of neat if we could built the core ACPI support in
> some kind of modular way such that that we could have it at boot-time,
> if we need it, but optionally unload it at run-time if it turned out the
> target system didn't need it. ]

It would be possible with some Makefile hacks. Basically you would need
to objcopy the ACPI object files and rename .text*/.data* to
a different acpi specific name. Then you can give it an special
area in the vmlinux.lds and possibly free it.

I agree with you that it's better kept in the kernel.

> Static Kernel Size:
> text data bss dec hex filename
> 144533 5608 4920 155061 25db5 drivers/acpi/built-in.o

Hmm, this used to be smaller, no? Perhaps someone going over
bloat-o-meter[1] output to an older version would be useful.
There is probably some low hanging fruit.

-Andi

[1] ftp://ftp.firstfloor.org/pub/ak/perl/bloat-o-meter

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