[PATCH 05/11] drm/i915: Reduce the pointer dance of i915_is_ggtt()

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The multiple levels of indirect do nothing but hinder the compiler and
the pointer chasing turns to be quite painful but painless to fix.

Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/i915/i915_debugfs.c        | 13 ++++++-------
 drivers/gpu/drm/i915/i915_drv.h            |  7 -------
 drivers/gpu/drm/i915/i915_gem.c            | 18 +++++++-----------
 drivers/gpu/drm/i915/i915_gem_execbuffer.c |  5 ++---
 drivers/gpu/drm/i915/i915_gem_gtt.c        | 12 +++++-------
 drivers/gpu/drm/i915/i915_gem_gtt.h        |  5 +++++
 drivers/gpu/drm/i915/i915_trace.h          | 27 ++++++++-------------------
 7 files changed, 33 insertions(+), 54 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index c04ba9981e9b..9ec133f5af00 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -118,7 +118,7 @@ static u64 i915_gem_obj_total_ggtt_size(struct drm_i915_gem_object *obj)
 	struct i915_vma *vma;
 
 	list_for_each_entry(vma, &obj->vma_list, obj_link) {
-		if (i915_is_ggtt(vma->vm) && drm_mm_node_allocated(&vma->node))
+		if (vma->is_ggtt && drm_mm_node_allocated(&vma->node))
 			size += vma->node.size;
 	}
 
@@ -165,12 +165,11 @@ describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 		seq_printf(m, " (fence: %d)", obj->fence_reg);
 	list_for_each_entry(vma, &obj->vma_list, obj_link) {
 		seq_printf(m, " (%sgtt offset: %08llx, size: %08llx",
-			   i915_is_ggtt(vma->vm) ? "g" : "pp",
+			   vma->is_ggtt ? "g" : "pp",
 			   vma->node.start, vma->node.size);
-		if (i915_is_ggtt(vma->vm))
-			seq_printf(m, ", type: %u)", vma->ggtt_view.type);
-		else
-			seq_puts(m, ")");
+		if (vma->is_ggtt)
+			seq_printf(m, ", type: %u", vma->ggtt_view.type);
+		seq_puts(m, ")");
 	}
 	if (obj->stolen)
 		seq_printf(m, " (stolen: %08llx)", obj->stolen->start);
@@ -346,7 +345,7 @@ static int per_file_stats(int id, void *ptr, void *data)
 
 		bound++;
 
-		if (i915_is_ggtt(vma->vm)) {
+		if (vma->is_ggtt) {
 			stats->global += vma->node.size;
 		} else {
 			struct i915_hw_ppgtt *ppgtt
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index dbcb7659ba2b..6ce163a681f2 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2916,18 +2916,11 @@ bool i915_gem_obj_is_pinned(struct drm_i915_gem_object *obj);
 /* Some GGTT VM helpers */
 #define i915_obj_to_ggtt(obj) \
 	(&((struct drm_i915_private *)(obj)->base.dev->dev_private)->gtt.base)
-static inline bool i915_is_ggtt(struct i915_address_space *vm)
-{
-	struct i915_address_space *ggtt =
-		&((struct drm_i915_private *)(vm)->dev->dev_private)->gtt.base;
-	return vm == ggtt;
-}
 
 static inline struct i915_hw_ppgtt *
 i915_vm_to_ppgtt(struct i915_address_space *vm)
 {
 	WARN_ON(i915_is_ggtt(vm));
-
 	return container_of(vm, struct i915_hw_ppgtt, base);
 }
 
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index e6ace74616b2..144e92df8137 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2603,8 +2603,7 @@ static int __i915_vma_unbind(struct i915_vma *vma, bool wait)
 			return ret;
 	}
 
-	if (i915_is_ggtt(vma->vm) &&
-	    vma->ggtt_view.type == I915_GGTT_VIEW_NORMAL) {
+	if (vma->is_ggtt && vma->ggtt_view.type == I915_GGTT_VIEW_NORMAL) {
 		i915_gem_object_finish_gtt(obj);
 
 		/* release the fence reg _after_ flushing */
@@ -2619,7 +2618,7 @@ static int __i915_vma_unbind(struct i915_vma *vma, bool wait)
 	vma->bound = 0;
 
 	list_del_init(&vma->vm_link);
-	if (i915_is_ggtt(vma->vm)) {
+	if (vma->is_ggtt) {
 		if (vma->ggtt_view.type == I915_GGTT_VIEW_NORMAL) {
 			obj->map_and_fenceable = false;
 		} else if (vma->ggtt_view.pages) {
@@ -3889,17 +3888,14 @@ struct i915_vma *i915_gem_obj_to_ggtt_view(struct drm_i915_gem_object *obj,
 
 void i915_gem_vma_destroy(struct i915_vma *vma)
 {
-	struct i915_address_space *vm = NULL;
 	WARN_ON(vma->node.allocated);
 
 	/* Keep the vma as a placeholder in the execbuffer reservation lists */
 	if (!list_empty(&vma->exec_list))
 		return;
 
-	vm = vma->vm;
-
-	if (!i915_is_ggtt(vm))
-		i915_ppgtt_put(i915_vm_to_ppgtt(vm));
+	if (!vma->is_ggtt)
+		i915_ppgtt_put(i915_vm_to_ppgtt(vma->vm));
 
 	list_del(&vma->obj_link);
 
@@ -4425,7 +4421,7 @@ u64 i915_gem_obj_offset(struct drm_i915_gem_object *o,
 	WARN_ON(vm == &dev_priv->mm.aliasing_ppgtt->base);
 
 	list_for_each_entry(vma, &o->vma_list, obj_link) {
-		if (i915_is_ggtt(vma->vm) &&
+		if (vma->is_ggtt &&
 		    vma->ggtt_view.type != I915_GGTT_VIEW_NORMAL)
 			continue;
 		if (vma->vm == vm)
@@ -4458,7 +4454,7 @@ bool i915_gem_obj_bound(struct drm_i915_gem_object *o,
 	struct i915_vma *vma;
 
 	list_for_each_entry(vma, &o->vma_list, obj_link) {
-		if (i915_is_ggtt(vma->vm) &&
+		if (vma->is_ggtt &&
 		    vma->ggtt_view.type != I915_GGTT_VIEW_NORMAL)
 			continue;
 		if (vma->vm == vm && drm_mm_node_allocated(&vma->node))
@@ -4505,7 +4501,7 @@ unsigned long i915_gem_obj_size(struct drm_i915_gem_object *o,
 	BUG_ON(list_empty(&o->vma_list));
 
 	list_for_each_entry(vma, &o->vma_list, obj_link) {
-		if (i915_is_ggtt(vma->vm) &&
+		if (vma->is_ggtt &&
 		    vma->ggtt_view.type != I915_GGTT_VIEW_NORMAL)
 			continue;
 		if (vma->vm == vm)
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index e9741368972e..6788f71ad989 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -658,7 +658,7 @@ need_reloc_mappable(struct i915_vma *vma)
 	if (entry->relocation_count == 0)
 		return false;
 
-	if (!i915_is_ggtt(vma->vm))
+	if (!vma->is_ggtt)
 		return false;
 
 	/* See also use_cpu_reloc() */
@@ -677,8 +677,7 @@ eb_vma_misplaced(struct i915_vma *vma)
 	struct drm_i915_gem_exec_object2 *entry = vma->exec_entry;
 	struct drm_i915_gem_object *obj = vma->obj;
 
-	WARN_ON(entry->flags & __EXEC_OBJECT_NEEDS_MAP &&
-	       !i915_is_ggtt(vma->vm));
+	WARN_ON(entry->flags & __EXEC_OBJECT_NEEDS_MAP && !vma->is_ggtt);
 
 	if (entry->alignment &&
 	    vma->node.start & (entry->alignment - 1))
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 25bcea3e6ab6..da150c27a76c 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -3134,6 +3134,7 @@ int i915_gem_gtt_init(struct drm_device *dev)
 	}
 
 	gtt->base.dev = dev;
+	gtt->base.is_ggtt = true;
 
 	ret = gtt->gtt_probe(dev, &gtt->base.total, &gtt->stolen_size,
 			     &gtt->mappable_base, &gtt->mappable_end);
@@ -3242,13 +3243,14 @@ __i915_gem_vma_create(struct drm_i915_gem_object *obj,
 	INIT_LIST_HEAD(&vma->exec_list);
 	vma->vm = vm;
 	vma->obj = obj;
+	vma->is_ggtt = i915_is_ggtt(vm);
 
 	if (i915_is_ggtt(vm))
 		vma->ggtt_view = *ggtt_view;
+	else
+		i915_ppgtt_get(i915_vm_to_ppgtt(vm));
 
 	list_add_tail(&vma->obj_link, &obj->vma_list);
-	if (!i915_is_ggtt(vm))
-		i915_ppgtt_get(i915_vm_to_ppgtt(vm));
 
 	return vma;
 }
@@ -3520,13 +3522,9 @@ int i915_vma_bind(struct i915_vma *vma, enum i915_cache_level cache_level,
 		return 0;
 
 	if (vma->bound == 0 && vma->vm->allocate_va_range) {
-		trace_i915_va_alloc(vma->vm,
-				    vma->node.start,
-				    vma->node.size,
-				    VM_TO_TRACE_NAME(vma->vm));
-
 		/* XXX: i915_vma_pin() will fix this +- hack */
 		vma->pin_count++;
+		trace_i915_va_alloc(vma);
 		ret = vma->vm->allocate_va_range(vma->vm,
 						 vma->node.start,
 						 vma->node.size);
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h
index 2497671d1e1a..bae005a62cfc 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.h
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.h
@@ -184,6 +184,7 @@ struct i915_vma {
 #define GLOBAL_BIND	(1<<0)
 #define LOCAL_BIND	(1<<1)
 	unsigned int bound : 4;
+	bool is_ggtt : 1;
 
 	/**
 	 * Support different GGTT views into the same object.
@@ -276,6 +277,8 @@ struct i915_address_space {
 	u64 start;		/* Start offset always 0 for dri2 */
 	u64 total;		/* size addr space maps (ex. 2GB for ggtt) */
 
+	bool is_ggtt;
+
 	struct i915_page_scratch *scratch_page;
 	struct i915_page_table *scratch_pt;
 	struct i915_page_directory *scratch_pd;
@@ -331,6 +334,8 @@ struct i915_address_space {
 			u32 flags);
 };
 
+#define i915_is_ggtt(V) ((V)->is_ggtt)
+
 /* The Graphics Translation Table is the way in which GEN hardware translates a
  * Graphics Virtual Address into a Physical Address. In addition to the normal
  * collateral associated with any va->pa translations GEN hardware also has a
diff --git a/drivers/gpu/drm/i915/i915_trace.h b/drivers/gpu/drm/i915/i915_trace.h
index 85469e3c740a..e486dcef508d 100644
--- a/drivers/gpu/drm/i915/i915_trace.h
+++ b/drivers/gpu/drm/i915/i915_trace.h
@@ -175,35 +175,24 @@ TRACE_EVENT(i915_vma_unbind,
 		      __entry->obj, __entry->offset, __entry->size, __entry->vm)
 );
 
-#define VM_TO_TRACE_NAME(vm) \
-	(i915_is_ggtt(vm) ? "G" : \
-		      "P")
-
-DECLARE_EVENT_CLASS(i915_va,
-	TP_PROTO(struct i915_address_space *vm, u64 start, u64 length, const char *name),
-	TP_ARGS(vm, start, length, name),
+TRACE_EVENT(i915_va_alloc,
+	TP_PROTO(struct i915_vma *vma),
+	TP_ARGS(vma),
 
 	TP_STRUCT__entry(
 		__field(struct i915_address_space *, vm)
 		__field(u64, start)
 		__field(u64, end)
-		__string(name, name)
 	),
 
 	TP_fast_assign(
-		__entry->vm = vm;
-		__entry->start = start;
-		__entry->end = start + length - 1;
-		__assign_str(name, name);
+		__entry->vm = vma->vm;
+		__entry->start = vma->node.start;
+		__entry->end = vma->node.start + vma->node.size - 1;
 	),
 
-	TP_printk("vm=%p (%s), 0x%llx-0x%llx",
-		  __entry->vm, __get_str(name),  __entry->start, __entry->end)
-);
-
-DEFINE_EVENT(i915_va, i915_va_alloc,
-	     TP_PROTO(struct i915_address_space *vm, u64 start, u64 length, const char *name),
-	     TP_ARGS(vm, start, length, name)
+	TP_printk("vm=%p (%c), 0x%llx-0x%llx",
+		  __entry->vm, i915_is_ggtt(__entry->vm) ? 'G' : 'P',  __entry->start, __entry->end)
 );
 
 DECLARE_EVENT_CLASS(i915_px_entry,
-- 
2.6.4

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