[Intel-gfx] [PATCH 4/9] drm/i915: don't update GEN6_PMIMR when it's not needed

[Paulo Zanoni]

2013/8/6 Chris Wilson <chris at chris-wilson.co.uk>:
> On Tue, Aug 06, 2013 at 06:57:14PM -0300, Paulo Zanoni wrote:
>> From: Paulo Zanoni <paulo.r.zanoni at intel.com>
>>
>> I did some brief tests and the "new_val = pmimr" condition usually
>> happens a few times after exiting games.
>>
>> Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
>
> I'm not sure of the value of this patch by itself. It did make me wonder
> what you were micro-optimising, and then I saw patch 5 and it made more
> sense.

Patches 4 and 5 are just micro optimizations and shouldn't be needed
for the PC8+, but I thought they would be useful. If you think they're
not worth it, we can discard them. I was trying to make the code
similar to the other IMR-changing functions.

If we massage the code a little bit more we could make all the
IMR-changing functions share the same code


> -Chris
>
> --
> Chris Wilson, Intel Open Source Technology Centre



-- 
Paulo Zanoni