OpenCloudOS-Kernel/drivers/gpu
Dave Gordon b338fa473e drm/i915: optimise i915_gem_object_map() for small objects
We're using this function for ringbuffers and other "small" objects, so
it's worth avoiding an extra malloc()/free() cycle if the page array is
small enough to put on the stack. Here we've chosen an arbitrary cutoff
of 32 (4k) pages, which is big enough for a ringbuffer (4 pages) or a
context image (currently up to 22 pages).

v5:
    change name of local array [Chris Wilson]

Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1463741647-15666-3-git-send-email-chris@chris-wilson.co.uk
2016-05-20 13:42:58 +01:00
..
drm drm/i915: optimise i915_gem_object_map() for small objects 2016-05-20 13:42:58 +01:00
host1x Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2016-03-21 13:48:00 -07:00
ipu-v3 gpu: ipu-v3: Fix imx-ipuv3-crtc module autoloading 2016-05-05 10:34:52 +10:00
vga vga_switcheroo: Add support for switching only the DDC 2016-02-09 11:21:07 +01:00
Makefile