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SubjectRe: [git pull] generic bitops


On Thu, 24 Apr 2008, Ingo Molnar wrote:
>
> this started out as improvements/generalizations to x86 bitops, but grew
> generic impact (and generic optimizations) as well, so it's offered as a
> separate tree.

Can you do the config thing differently?

> diff --git a/arch/um/Kconfig.i386 b/arch/um/Kconfig.i386
> index e09edfa..49990ea 100644
> --- a/arch/um/Kconfig.i386
> +++ b/arch/um/Kconfig.i386
> @@ -39,6 +39,14 @@ config ARCH_REUSE_HOST_VSYSCALL_AREA
> bool
> default y
>
> +config GENERIC_FIND_FIRST_BIT
> + bool
> + default y
> +
> +config GENERIC_FIND_NEXT_BIT
> + bool
> + default y
> +

.. because instead of having each architecture do these kinds of things,
we're trying to make the *generic* code (ie lib/Kconfig) do

config GENERIC_FIND_FIRST_BIT
bool
default n

so that you only have one single declaration (close to where the code
actually exists), and then the architectures would just do

select GENERIC_FIND_FIRST_BIT
select GENERIC_FIND_NEXT_BIT

in their architecture settings. That's how we're now doing things like
HAVE_IDE, HAVE_OPROFILE, etc etc.

Hmm?

Linus


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