drm/i915/gem: Give each object class a friendly name

Name the object classes and their offspring for easier lockdep
debugging.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200529183204.16850-2-chris@chris-wilson.co.uk

drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c

@@ -217,6 +217,7 @@ static void i915_gem_object_put_pages_dmabuf(struct drm_i915_gem_object *obj,
 }
 
 static const struct drm_i915_gem_object_ops i915_gem_object_dmabuf_ops = {
+	.name = "i915_gem_object_dmabuf",
 	.get_pages = i915_gem_object_get_pages_dmabuf,
 	.put_pages = i915_gem_object_put_pages_dmabuf,
 };

drivers/gpu/drm/i915/gem/i915_gem_internal.c

@@ -137,6 +137,7 @@ static void i915_gem_object_put_pages_internal(struct drm_i915_gem_object *obj,
 }
 
 static const struct drm_i915_gem_object_ops i915_gem_object_internal_ops = {
+	.name = "i915_gem_object_internal",
 	.flags = I915_GEM_OBJECT_HAS_STRUCT_PAGE |
 		 I915_GEM_OBJECT_IS_SHRINKABLE,
 	.get_pages = i915_gem_object_get_pages_internal,

drivers/gpu/drm/i915/gem/i915_gem_lmem.c

@@ -9,6 +9,7 @@
 #include "i915_drv.h"
 
 const struct drm_i915_gem_object_ops i915_gem_lmem_obj_ops = {
+	.name = "i915_gem_object_lmem",
 	.flags = I915_GEM_OBJECT_HAS_IOMEM,
 
 	.get_pages = i915_gem_object_get_pages_buddy,

drivers/gpu/drm/i915/gem/i915_gem_object.c

@@ -53,7 +53,7 @@ void i915_gem_object_init(struct drm_i915_gem_object *obj,
 			  const struct drm_i915_gem_object_ops *ops,
 			  struct lock_class_key *key)
 {
-	__mutex_init(&obj->mm.lock, "obj->mm.lock", key);
+	__mutex_init(&obj->mm.lock, ops->name ?: "obj->mm.lock", key);
 
 	spin_lock_init(&obj->vma.lock);
 	INIT_LIST_HEAD(&obj->vma.list);

drivers/gpu/drm/i915/gem/i915_gem_object_types.h

@@ -61,6 +61,8 @@ struct drm_i915_gem_object_ops {
 
 	int (*dmabuf_export)(struct drm_i915_gem_object *obj);
 	void (*release)(struct drm_i915_gem_object *obj);
+
+	const char *name; /* friendly name for debug, e.g. lockdep classes */
 };
 
 enum i915_mmap_type {

drivers/gpu/drm/i915/gem/i915_gem_phys.c

@@ -142,6 +142,7 @@ static void phys_release(struct drm_i915_gem_object *obj)
 }
 
 static const struct drm_i915_gem_object_ops i915_gem_phys_ops = {
+	.name = "i915_gem_object_phys",
 	.get_pages = i915_gem_object_get_pages_phys,
 	.put_pages = i915_gem_object_put_pages_phys,
 

drivers/gpu/drm/i915/gem/i915_gem_shmem.c

@@ -429,6 +429,7 @@ static void shmem_release(struct drm_i915_gem_object *obj)
 }
 
 const struct drm_i915_gem_object_ops i915_gem_shmem_ops = {
+	.name = "i915_gem_object_shmem",
 	.flags = I915_GEM_OBJECT_HAS_STRUCT_PAGE |
 		 I915_GEM_OBJECT_IS_SHRINKABLE,
 

drivers/gpu/drm/i915/gem/i915_gem_stolen.c

@@ -566,6 +566,7 @@ i915_gem_object_release_stolen(struct drm_i915_gem_object *obj)
 }
 
 static const struct drm_i915_gem_object_ops i915_gem_object_stolen_ops = {
+	.name = "i915_gem_object_stolen",
 	.get_pages = i915_gem_object_get_pages_stolen,
 	.put_pages = i915_gem_object_put_pages_stolen,
 	.release = i915_gem_object_release_stolen,

drivers/gpu/drm/i915/gem/i915_gem_userptr.c

@@ -700,6 +700,7 @@ i915_gem_userptr_dmabuf_export(struct drm_i915_gem_object *obj)
 }
 
 static const struct drm_i915_gem_object_ops i915_gem_userptr_ops = {
+	.name = "i915_gem_object_userptr",
 	.flags = I915_GEM_OBJECT_HAS_STRUCT_PAGE |
 		 I915_GEM_OBJECT_IS_SHRINKABLE |
 		 I915_GEM_OBJECT_NO_MMAP |

drivers/gpu/drm/i915/gem/selftests/huge_gem_object.c

@@ -88,6 +88,7 @@ static void huge_put_pages(struct drm_i915_gem_object *obj,
 }
 
 static const struct drm_i915_gem_object_ops huge_ops = {
+	.name = "huge-gem",
 	.flags = I915_GEM_OBJECT_HAS_STRUCT_PAGE,
 	.get_pages = huge_get_pages,
 	.put_pages = huge_put_pages,

drivers/gpu/drm/i915/gem/selftests/huge_pages.c

@@ -139,6 +139,7 @@ static void put_huge_pages(struct drm_i915_gem_object *obj,
 }
 
 static const struct drm_i915_gem_object_ops huge_page_ops = {
+	.name = "huge-gem",
 	.flags = I915_GEM_OBJECT_HAS_STRUCT_PAGE |
 		 I915_GEM_OBJECT_IS_SHRINKABLE,
 	.get_pages = get_huge_pages,
@@ -283,12 +284,14 @@ static void fake_put_huge_pages(struct drm_i915_gem_object *obj,
 }
 
 static const struct drm_i915_gem_object_ops fake_ops = {
+	.name = "fake-gem",
 	.flags = I915_GEM_OBJECT_IS_SHRINKABLE,
 	.get_pages = fake_get_huge_pages,
 	.put_pages = fake_put_huge_pages,
 };
 
 static const struct drm_i915_gem_object_ops fake_ops_single = {
+	.name = "fake-gem",
 	.flags = I915_GEM_OBJECT_IS_SHRINKABLE,
 	.get_pages = fake_get_huge_pages_single,
 	.put_pages = fake_put_huge_pages,

drivers/gpu/drm/i915/gvt/dmabuf.c

@@ -198,6 +198,7 @@ static void vgpu_gem_release(struct drm_i915_gem_object *gem_obj)
 }
 
 static const struct drm_i915_gem_object_ops intel_vgpu_gem_ops = {
+	.name = "i915_gem_object_vgpu",
 	.flags = I915_GEM_OBJECT_IS_PROXY,
 	.get_pages = vgpu_gem_get_pages,
 	.put_pages = vgpu_gem_put_pages,

drivers/gpu/drm/i915/selftests/i915_gem_gtt.c

@@ -97,6 +97,7 @@ static void fake_put_pages(struct drm_i915_gem_object *obj,
 }
 
 static const struct drm_i915_gem_object_ops fake_ops = {
+	.name = "fake-gem",
 	.flags = I915_GEM_OBJECT_IS_SHRINKABLE,
 	.get_pages = fake_get_pages,
 	.put_pages = fake_put_pages,

drivers/gpu/drm/i915/selftests/mock_region.c

@@ -9,6 +9,7 @@
 #include "mock_region.h"
 
 static const struct drm_i915_gem_object_ops mock_region_obj_ops = {
+	.name = "mock-region",
 	.get_pages = i915_gem_object_get_pages_buddy,
 	.put_pages = i915_gem_object_put_pages_buddy,
 	.release = i915_gem_object_release_memory_region,