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drm/i915: Consolidate the timeline->barrier

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The timeline is strictly ordered, so by inserting the timeline->barrier
request into the timeline->last_request it naturally provides the same
barrier. Consolidate the pair of barriers into one as they serve the
same purpose.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190408091728.20207-4-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2019-04-08 10:17:03 +01:00
parent da23379f15
commit de220cc219
6 changed files with 2 additions and 48 deletions
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2
drivers/gpu/drm/i915/i915_timeline.c
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@@ -253,7 +253,6 @@ int i915_timeline_init(struct drm_i915_private *i915,
spin_lock_init(&timeline->lock);
mutex_init(&timeline->mutex);
INIT_ACTIVE_REQUEST(&timeline->barrier);
INIT_ACTIVE_REQUEST(&timeline->last_request);
INIT_LIST_HEAD(&timeline->requests);
@@ -326,7 +325,6 @@ void i915_timeline_fini(struct i915_timeline *timeline)
{
GEM_BUG_ON(timeline->pin_count);
GEM_BUG_ON(!list_empty(&timeline->requests));
GEM_BUG_ON(i915_active_request_isset(&timeline->barrier));
i915_syncmap_free(&timeline->sync);