[Intel-gfx] [RFC 2/3] drm/i915: Extend I915_PARAMS_FOR_EACH with default member value

[Jani Nikula]

On Fri, 22 Sep 2017, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> Quoting Michal Wajdeczko (2017-09-22 15:27:25)
>> By combining default value into helper macro we can initialize
>> modparams struct in the same automatic way as it was declared.
>> This will initialize members in the same order as declared
>> and additionally will disallow declaring new member without
>> proper default value for it.
>> 
>> Signed-off-by: Michal Wajdeczko <michal.wajdeczko at intel.com>
>> Cc: Chris Wilson <chris at chris-wilson.co.uk>
>> Cc: Jani Nikula <jani.nikula at intel.com>
>> Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
>
> Overall, I think this is a positive change. I'm not completely happy
> that the param() macro is more readable than the struct assignment, but
> that is offset by the reduction in duplication.

I'm also not completely happy that the default values get moved away
from the param descriptions. (Hmm, what next, putting the permissions
and descriptions in I915_PARAMS_FOR_EACH too?! :o)

There's also the benefit of being able to highlight the changed values
and displaying the defaults in debugfs if desired.

On the series,

Acked-by: Jani Nikula <jani.nikula at intel.com>


-- 
Jani Nikula, Intel Open Source Technology Center