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SubjectRe: [PATCH] include/asm-generic/io.h: add dummy fuctions to support 'COMPILE_TEST' in 'asm-generic'.
On 07/04/2013 09:12 AM, Greg KH wrote:
> On Thu, Jul 04, 2013 at 08:57:34AM +0800, Chen Gang wrote:
>> > 'COMPILE_TEST=y' will let 'asm-generic' provide self checking sevices to
>> > both modules and architectures (especially with allmodconfig and
>> > "EXTRA_CFLAGS=-W")
> No it doesn't.
>

"If add 'COMPILE_TEST=y' to 'asm-generic', it will provide self checking
services to both modules and architectures"

Is it correct ?

>> > For modules (especially which will run under the specific architecture
>> > soon), the developer can find more compiling issues before they really
>> > support it.
> Huh?
>

For developers, they may has hobby to let their code pass compiling as
much as possible in the integrating environments, although the modules
may not really load/run.


>> > For architectures, can let modules compile as much as possible (if
>> > "COMPILE_TEST=y"), it will give a better check for the architectures.
>> >
>> > At present, most of architectures (include various machine/cpu in an
>> > architecture) can not pass compiling with 'allmodconfig'. One of the
>> > main reasons is the HW of the specific architecture does not support.
>> >
>> > It is neither architectures issue nor modules issue, the root cause is:
>> > "now, 'asm-generic' doesn't provide the related necessary public
>> > services for it".
> That's not what asm-generic is for at all.

Hmm... at least, it is neither architectures issue nor modules issue.

So we have to look for who have duty for it, since it is a 'generic'
issue for many architectures and modules, we have to find it in
'generic' area (e.g. "./include/*").

At least now, it seems only "asm-generic/*" can play the unlucky role !!

Or, do you think it is still the modules issue themselves ?


Thanks.
--
Chen Gang


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