tree a9a786e798d90854d4270f925c87c2c921ea7d74
parent 3b16525cc4c1a43e9053cfdc414356eea24bdfad
author Chris Wilson <chris@chris-wilson.co.uk> 1470324746 +0100
committer Chris Wilson <chris@chris-wilson.co.uk> 1470338395 +0100

drm/i915: Convert 4096 alignment request to 0 for drm_mm allocations

As we always allocate in chunks of 4096 (that being both the PAGE_SIZE
and our own GTT_PAGE_SIZE), we know that all results from the drm_mm are
aligned to at least 4096. The drm_mm allocator itself is optimised for
alignment == 0, and so by converting alignments of 4096 to 0 we can
satisfy our own requirements and still hit the faster path.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1470324762-2545-10-git-send-email-chris@chris-wilson.co.uk