[Intel-gfx] [intel-gfx][PATCH] intel: add a new interface drm_intel_bo_alloc_direct

[Xiang, Haihao]

On Fri, 2010-05-28 at 22:04 +0800, Daniel Vetter wrote:
> On Tue, May 25, 2010 at 01:06:50PM +0800, Xiang, Haihao wrote:
> > This interface is the same as drm_intel_bo_alloc except the allocated
> > size isn't rounded up, so it bypasses the cache bucket.
> > 
> > The size of the BO created by drm_intel_bo_alloc for a 1920x800,4:2:0 YUV
> > planar surface is 4M, it is about 2.2M if using drm_intel_bo_alloc_direct.
> 
> Have you tried either Chris Wilson's or my fair-lru eviction patches? They
> should help quite a lot, especially for many big objects of exactly the
> same size like libva uses.
Get the following errors when applying your fair-lru eviction patches

Applying: drm/i915: prepare for fair lru eviction
error: patch failed: drivers/gpu/drm/i915/i915_gem.c:2203
error: drivers/gpu/drm/i915/i915_gem.c: patch does not apply

I am using drm-intel-next branch.

Thanks
Haihao


> Cause even 2*23*4M = 184 should decently fit into a 256M aperture - which
> is what I have here for my ilk machine. Dunno whether that 23 for the
> number of reference framse is correct, but it's certainly an upper bound.
> 
> Yours, Daniel