drm/xe: Record each drm client with its VM

Enable accounting of indirect client memory usage.
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Signed-off-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/xe/xe_vm.c

@@ -2058,6 +2058,7 @@ int xe_vm_create_ioctl(struct drm_device *dev, void *data,
 	}
 
 	args->vm_id = id;
+	vm->xef = xef;
 
 #if IS_ENABLED(CONFIG_DRM_XE_DEBUG_MEM)
 	/* Warning: Security issue - never enable by default */

drivers/gpu/drm/xe/xe_vm_types.h

@@ -329,6 +329,8 @@ struct xe_vm {
 
 	/** @batch_invalidate_tlb: Always invalidate TLB before batch start */
 	bool batch_invalidate_tlb;
+	/** @xef: XE file handle for tracking this VM's drm client */
+	struct xe_file *xef;
 };
 
 /** struct xe_vma_op_map - VMA map operation */