[Intel-gfx] [RFC 3/3] drm/i915: Micro-optimize i915_gem_obj_to_vma

[Chris Wilson]

On Thu, Apr 21, 2016 at 01:05:53PM +0100, Tvrtko Ursulin wrote:
> From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> 
> i915_gem_obj_to_vma is one of the most expensive functions in
> our profiles. Could avoiding some branching by replacing it
> with arithmetic be beneficial? Some benchmarks suggest it
> slightly might.

We can do much better by changing the algorithm here (here and higher
up the call chain).
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre