drm/i915: Track objects in global active list (as well as per-ring)
To handle retirements, we need per-ring tracking of active objects.
To handle evictions, we need global tracking of active objects.
As we enable more rings, rebuilding the global list from the individual
per-ring lists quickly grows tiresome and overly complicated. Tracking the
active objects in two lists is the lesser of two evils.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 84e33ae..817d8be 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -548,6 +548,17 @@
struct list_head shrink_list;
/**
+ * List of objects currently involved in rendering.
+ *
+ * Includes buffers having the contents of their GPU caches
+ * flushed, not necessarily primitives. last_rendering_seqno
+ * represents when the rendering involved will be completed.
+ *
+ * A reference is held on the buffer while on this list.
+ */
+ struct list_head active_list;
+
+ /**
* List of objects which are not in the ringbuffer but which
* still have a write_domain which needs to be flushed before
* unbinding.
@@ -714,7 +725,8 @@
struct drm_mm_node *gtt_space;
/** This object's place on the active/flushing/inactive lists */
- struct list_head list;
+ struct list_head ring_list;
+ struct list_head mm_list;
/** This object's place on GPU write list */
struct list_head gpu_write_list;
/** This object's place on eviction list */