[PATCH 07/16] drm/i915/error: vma error capture prettyify

[Ben Widawsky <benjamin.widawsky@intel.com>]

Rename some variables, and clean up the code a bit to make things
clearer in our error capture.

There isn't an intentional functional change here.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
---
 drivers/gpu/drm/i915/i915_gpu_error.c | 55 ++++++++++++++++++++---------------
 1 file changed, 32 insertions(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 550ba38..ebe2904 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -967,63 +967,72 @@ static void i915_gem_record_rings(struct drm_device *dev,
 	}
 }
 
-/* FIXME: Since pin count/bound list is global, we duplicate what we capture per
+/**
+ * i915_gem_capture_vm() - Capture a VMs error state.
+ * @error:	The main error structure
+ * @vm:		The address space we're capturing.
+ * @vm_ndx:	Which vm without the buffer array
+ *
+ * FIXME: Since pin count/bound list is global, we duplicate what we capture per
  * VM.
  */
 static void i915_gem_capture_vm(struct drm_i915_private *dev_priv,
 				struct drm_i915_error_state *error,
 				struct i915_address_space *vm,
-				const int ndx)
+				const int vm_ndx)
 {
 	struct drm_i915_error_buffer *active_bo = NULL, *pinned_bo = NULL;
 	struct drm_i915_gem_object *obj;
 	struct i915_vma *vma;
-	int i;
+	int active_vma_count = 0;
 
-	i = 0;
 	list_for_each_entry(vma, &vm->active_list, mm_list)
-		i++;
-	error->active_bo_count[ndx] = i;
+		active_vma_count++;
+
+	error->active_bo_count[vm_ndx] = active_vma_count;
+
 	list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list)
 		if (i915_gem_obj_is_pinned(obj))
-			i++;
-	error->pinned_bo_count[ndx] = i - error->active_bo_count[ndx];
+			active_vma_count++;
+
+	/* XXX: this is an incorrect measurement of pinned BOs */
+	error->pinned_bo_count[vm_ndx] = active_vma_count - error->active_bo_count[vm_ndx];
 
-	if (i) {
-		active_bo = kcalloc(i, sizeof(*active_bo), GFP_ATOMIC);
+	if (active_vma_count) {
+		active_bo = kcalloc(active_vma_count, sizeof(*active_bo), GFP_ATOMIC);
 		if (active_bo)
-			pinned_bo = active_bo + error->active_bo_count[ndx];
+			pinned_bo = active_bo + error->active_bo_count[vm_ndx];
 	}
 
 	if (active_bo)
-		error->active_bo_count[ndx] =
+		error->active_bo_count[vm_ndx] =
 			capture_active_bo(active_bo,
-					  error->active_bo_count[ndx],
+					  error->active_bo_count[vm_ndx],
 					  &vm->active_list);
 
 	if (pinned_bo)
-		error->pinned_bo_count[ndx] =
+		error->pinned_bo_count[vm_ndx] =
 			capture_pinned_bo(pinned_bo,
-					  error->pinned_bo_count[ndx],
+					  error->pinned_bo_count[vm_ndx],
 					  &dev_priv->mm.bound_list);
-	error->active_bo[ndx] = active_bo;
-	error->pinned_bo[ndx] = pinned_bo;
+	error->active_bo[vm_ndx] = active_bo;
+	error->pinned_bo[vm_ndx] = pinned_bo;
 }
 
 static void i915_gem_capture_buffers(struct drm_i915_private *dev_priv,
 				     struct drm_i915_error_state *error)
 {
 	struct i915_address_space *vm;
-	int cnt = 0, i = 0;
+	int vm_count = 0, i = 0;
 
 	list_for_each_entry(vm, &dev_priv->vm_list, global_link)
-		cnt++;
+		vm_count++;
 
-	error->active_bo = kcalloc(cnt, sizeof(*error->active_bo), GFP_ATOMIC);
-	error->pinned_bo = kcalloc(cnt, sizeof(*error->pinned_bo), GFP_ATOMIC);
-	error->active_bo_count = kcalloc(cnt, sizeof(*error->active_bo_count),
+	error->active_bo = kcalloc(vm_count, sizeof(*error->active_bo), GFP_ATOMIC);
+	error->pinned_bo = kcalloc(vm_count, sizeof(*error->pinned_bo), GFP_ATOMIC);
+	error->active_bo_count = kcalloc(vm_count, sizeof(*error->active_bo_count),
 					 GFP_ATOMIC);
-	error->pinned_bo_count = kcalloc(cnt, sizeof(*error->pinned_bo_count),
+	error->pinned_bo_count = kcalloc(vm_count, sizeof(*error->pinned_bo_count),
 					 GFP_ATOMIC);
 
 	list_for_each_entry(vm, &dev_priv->vm_list, global_link)
-- 
2.0.1