drm/i915: Only pwrite through the GTT if there is space in the aperture

Browse source

Avoid stalling and waiting for the GPU by checking to see if there is
sufficient inactive space in the aperture for us to bind the buffer
prior to writing through the GTT. If there is inadequate space we will
have to stall waiting for the GPU, and incur overheads moving objects
about. Instead, only incur the clflush overhead on the target object by
writing through shmem.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

...

This commit is contained in:

Chris Wilson 2012-08-11 15:41:04 +01:00 • committed by Daniel Vetter

parent 53621860c3

commit 86a1ee26bb

8 changed files with 33 additions and 24 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

6

drivers/gpu/drm/i915/i915_drv.h

View file

29

drivers/gpu/drm/i915/i915_gem.c

View file

4

drivers/gpu/drm/i915/i915_gem_context.c

View file

6

drivers/gpu/drm/i915/i915_gem_evict.c

View file

2

drivers/gpu/drm/i915/i915_gem_execbuffer.c

View file

2

drivers/gpu/drm/i915/intel_overlay.c

View file

2

drivers/gpu/drm/i915/intel_pm.c

View file

6

drivers/gpu/drm/i915/intel_ringbuffer.c

View file