drm: add drm_gem_object_is_shared_for_memory_stats() helper

From Alex Deucher
a4ae24cd04a8e2c1f61586a2e129b1cbd44a78db in linux-6.6.y/6.6.30
b31f5eba32ae8cc28e7cfa5a55ec8670d8c718e2 in mainline linux

diff --git a/sys/dev/pci/drm/include/drm/drm_gem.h b/sys/dev/pci/drm/include/drm/drm_gem.h
index de5d21d..678464a 100644 (file)
--- a/sys/dev/pci/drm/include/drm/drm_gem.h
+++ b/sys/dev/pci/drm/include/drm/drm_gem.h
@@ -567,6 +567,19 @@ unsigned long drm_gem_lru_scan(struct drm_gem_lru *lru,
 
 int drm_gem_evict(struct drm_gem_object *obj);
 
+/**
+ * drm_gem_object_is_shared_for_memory_stats - helper for shared memory stats
+ *
+ * This helper should only be used for fdinfo shared memory stats to determine
+ * if a GEM object is shared.
+ *
+ * @obj: obj in question
+ */
+static inline bool drm_gem_object_is_shared_for_memory_stats(struct drm_gem_object *obj)
+{
+       return (obj->handle_count > 1) || obj->dma_buf;
+}
+
 #ifdef CONFIG_LOCKDEP
 /**
  * drm_gem_gpuva_set_lock() - Set the lock protecting accesses to the gpuva list.