[Intel-gfx] [PATCH 1/2] drm/i915: Re-order some checks to do the unlikely one first

Chris Wilson chris at chris-wilson.co.uk
Mon Feb 16 13:03:51 PST 2015


On Mon, Feb 16, 2015 at 06:25:10PM +0000, Damien Lespiau wrote:
> instpm_mode != relative_constants_mode is quite unlikely to happen, so
> we can test it first to use C's && short-circuiting and not test on
> 'ring'.
> 
> I know, probably a useless micro-optimisation in the big scheme of
> things, but I'm going to add another test here, so might as well do it.

If you want to get pedantic, we want to move this to per-context :)
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre


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