Heads up: Linus plans to kill ARM defconfigs

[ryan@bluewatersys.com (Ryan Mallon)]

Marek Vasut wrote:
> Dne P? 4. ?ervna 2010 01:33:35 Ryan Mallon napsal(a):
>> Nicolas Pitre wrote:
>>> On Fri, 4 Jun 2010, Ryan Mallon wrote:
>>>> Is it worth being a bit proactive and getting rid of some of them in
>>>> advance? Things like spear3[012]0_defconfig are basically identically
>>>> except for the board type. Combining all three of those would remove
>>>> 1500 lines of code.
>>> Please go ahead with a patch.
>> Hmm, not as easy as I thought. The three boards cannot be built into a
>> single kernel since the arch/arm/mach-spear3xx/spear3[012]0.c files all
>> extern a bunch of structs which have naming conflicts.
>>
>> It does look possible to rewrite that code so that all three boards can
>> be built into a single kernel. I can try and put together a patch, but I
>> don't have any hardware to test with.
>>
>> The at91 is actually in a similar state, where only one of the
>> at91sam9260, at91sam9g45, etc can be selected. Again, it should be
>> possible to rework the code so that most of the different cpus can be
>> built into a single kernel. I'm sure other mach's are in a simliar
>> state. Fixing these where possible would allow us to have single
>> defconfigs per mach directory and reduce code churn, which is what Linus
>> is really complaining about.
> 
> I just tested, PXA (mach-pxa) probably can be compiled into single kernel 
> supporting all the boards.

Yes, IIRC Russell and Eric did a huge amount of work to get pxa into
that state.

ryan at okiwi:configs$ grep "ARCH_PXA=y" * | wc -l
25

Can we remove/combine some of those?

~Ryan

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