diff --git a/kobject-example.c b/kobject-example.c
index 477ab9b..41c80d7 100644
--- a/kobject-example.c
+++ b/kobject-example.c
@@ -35,6 +35,21 @@ static ssize_t is_zero_show(struct kobject *kobj, struct kobj_attribute *attr,
 }
 static struct kobj_attribute is_zero_attribute = __ATTR_RO(is_zero);
 
+static ssize_t is_atomic_show(struct kobject *kobj, struct kobj_attribute *attr,
+			char *buf)
+{
+	unsigned long percpu_ptr = READ_ONCE(global_ref.percpu_count_ptr);
+	return sysfs_emit(buf, "%d\n", percpu_ptr & __PERCPU_REF_ATOMIC);
+}
+static struct kobj_attribute is_atomic_attribute = __ATTR_RO(is_atomic);
+
+static ssize_t force_atomic_show(struct kobject *kobj, struct kobj_attribute *attr,
+			char *buf)
+{
+	return sysfs_emit(buf, "%d\n", global_ref.data->force_atomic);
+}
+static struct kobj_attribute force_atomic_attribute = __ATTR_RO(force_atomic);
+
 static ssize_t kill_store(struct kobject *kobj, struct kobj_attribute *attr,
                          const char *buf, size_t count)
 {
@@ -51,12 +66,23 @@ static ssize_t resurrect_store(struct kobject *kobj, struct kobj_attribute *attr
 }
 static struct kobj_attribute resurrect_attribute = __ATTR_WO(resurrect);
 
+static ssize_t switch_to_percpu_store(struct kobject *kobj, struct kobj_attribute *attr,
+                         const char *buf, size_t count)
+{
+	percpu_ref_switch_to_percpu(&global_ref);
+        return count;
+}
+static struct kobj_attribute switch_to_percpu_attribute = __ATTR_WO(switch_to_percpu);
+
 static struct attribute *attrs[] = {
 	&is_dying_attribute.attr,
 	&is_zero_attribute.attr,
 	&is_percpu_attribute.attr,
+	&is_atomic_attribute.attr,
+	&force_atomic_attribute.attr,
 	&kill_attribute.attr,
 	&resurrect_attribute.attr,
+	&switch_to_percpu_attribute.attr,
 	NULL,
 };
 static struct attribute_group attr_group = {