[Intel-gfx] [PATCH 39/66] drm/i915: Move active to vma

[Ben Widawsky]

Probably need to squash whole thing, or just the inactive part, tbd...

Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
---
 drivers/gpu/drm/i915/i915_drv.h | 14 ++++++------
 drivers/gpu/drm/i915/i915_gem.c | 47 ++++++++++++++++++++++++-----------------
 2 files changed, 35 insertions(+), 26 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index b3eb067..247a124 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -545,6 +545,13 @@ struct i915_vma {
 	/* Page aligned offset (helper for stolen) */
 	unsigned long deferred_offset;
 
+	/**
+	 * This is set if the object is on the active lists (has pending
+	 * rendering and so a non-zero seqno), and is not set if it i s on
+	 * inactive (ready to be unbound) list.
+	 */
+	unsigned int active:1;
+
 	/** This object's place on the active/inactive lists */
 	struct list_head mm_list;
 
@@ -1245,13 +1252,6 @@ struct drm_i915_gem_object {
 	struct list_head exec_list;
 
 	/**
-	 * This is set if the object is on the active lists (has pending
-	 * rendering and so a non-zero seqno), and is not set if it i s on
-	 * inactive (ready to be unbound) list.
-	 */
-	unsigned int active:1;
-
-	/**
 	 * This is set if the object has been written to since last bound
 	 * to the GTT
 	 */
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index f448804..a3e8c26 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -137,7 +137,13 @@ int i915_mutex_lock_interruptible(struct drm_device *dev)
 /* NB: Not the same as !i915_gem_object_is_inactive */
 bool i915_gem_object_is_active(struct drm_i915_gem_object *obj)
 {
-	return obj->active;
+	struct i915_vma *vma;
+
+	list_for_each_entry(vma, &obj->vma_list, vma_link)
+		if (vma->active)
+			return true;
+
+	return false;
 }
 
 static inline bool
@@ -1889,14 +1895,14 @@ i915_gem_object_move_to_active(struct drm_i915_gem_object *obj,
 	BUG_ON(ring == NULL);
 	obj->ring = ring;
 
+	/* Move from whatever list we were on to the tail of execution. */
+	vma = i915_gem_obj_to_vma(obj, vm);
 	/* Add a reference if we're newly entering the active list. */
-	if (!i915_gem_object_is_active(obj)) {
+	if (!vma->active) {
 		drm_gem_object_reference(&obj->base);
-		obj->active = 1;
+		vma->active = 1;
 	}
 
-	/* Move from whatever list we were on to the tail of execution. */
-	vma = i915_gem_obj_to_vma(obj, vm);
 	list_move_tail(&vma->mm_list, &vm->active_list);
 	list_move_tail(&obj->ring_list, &ring->active_list);
 
@@ -1917,16 +1923,23 @@ i915_gem_object_move_to_active(struct drm_i915_gem_object *obj,
 }
 
 static void
-i915_gem_object_move_to_inactive(struct drm_i915_gem_object *obj,
-				 struct i915_address_space *vm)
+i915_gem_object_move_to_inactive(struct drm_i915_gem_object *obj)
 {
+	struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
+	struct i915_address_space *vm;
 	struct i915_vma *vma;
+	int i = 0;
 
 	BUG_ON(obj->base.write_domain & ~I915_GEM_GPU_DOMAINS);
-	BUG_ON(!i915_gem_object_is_active(obj));
 
-	vma = i915_gem_obj_to_vma(obj, vm);
-	list_move_tail(&vma->mm_list, &vm->inactive_list);
+	list_for_each_entry(vm, &dev_priv->vm_list, global_link) {
+		vma = i915_gem_obj_to_vma(obj, vm);
+		if (!vma || !vma->active)
+			continue;
+		list_move_tail(&vma->mm_list, &vm->inactive_list);
+		vma->active = 0;
+		i++;
+	}
 
 	list_del_init(&obj->ring_list);
 	obj->ring = NULL;
@@ -1938,8 +1951,8 @@ i915_gem_object_move_to_inactive(struct drm_i915_gem_object *obj,
 	obj->last_fenced_seqno = 0;
 	obj->fenced_gpu_access = false;
 
-	obj->active = 0;
-	drm_gem_object_unreference(&obj->base);
+	while (i--)
+		drm_gem_object_unreference(&obj->base);
 
 	WARN_ON(i915_verify_lists(dev));
 }
@@ -2273,15 +2286,13 @@ static bool i915_gem_reset_ring_lists(struct drm_i915_private *dev_priv,
 	}
 
 	while (!list_empty(&ring->active_list)) {
-		struct i915_address_space *vm;
 		struct drm_i915_gem_object *obj;
 
 		obj = list_first_entry(&ring->active_list,
 				       struct drm_i915_gem_object,
 				       ring_list);
 
-		list_for_each_entry(vm, &dev_priv->vm_list, global_link)
-			i915_gem_object_move_to_inactive(obj, vm);
+		i915_gem_object_move_to_inactive(obj);
 	}
 
 	return ctx_banned;
@@ -2365,8 +2376,6 @@ i915_gem_retire_requests_ring(struct intel_ring_buffer *ring)
 	 * by the ringbuffer to the flushing/inactive lists as appropriate.
 	 */
 	while (!list_empty(&ring->active_list)) {
-		struct drm_i915_private *dev_priv = ring->dev->dev_private;
-		struct i915_address_space *vm;
 		struct drm_i915_gem_object *obj;
 
 		obj = list_first_entry(&ring->active_list,
@@ -2376,8 +2385,8 @@ i915_gem_retire_requests_ring(struct intel_ring_buffer *ring)
 		if (!i915_seqno_passed(seqno, obj->last_read_seqno))
 			break;
 
-		list_for_each_entry(vm, &dev_priv->vm_list, global_link)
-			i915_gem_object_move_to_inactive(obj, vm);
+		BUG_ON(!i915_gem_object_is_active(obj));
+		i915_gem_object_move_to_inactive(obj);
 	}
 
 	if (unlikely(ring->trace_irq_seqno &&
-- 
1.8.3.1