tree 5039cbf409c2481f3a5bba1e76774b1b1d92e64b
parent caddfe7192f5e74d65ebcfdae614f99e8fd87222
author Chris Wilson <chris@chris-wilson.co.uk> 1477659533 +0100
committer Chris Wilson <chris@chris-wilson.co.uk> 1477684434 +0100

drm/i915: Move the global sync optimisation to the timeline

Currently we try to reduce the number of synchronisations (now the
number of requests we need to wait upon) by noting that if we have
earlier waited upon a request, all subsequent requests in the timeline
will be after the wait. This only applies to requests in this timeline,
as other timelines will not be ordered by that waiter.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161028125858.23563-30-chris@chris-wilson.co.uk