mini-os is missing list_top in its list.h

Signed-off-by: Keir Fraser <keir.fraser@citrix.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/extras/mini-os/include/list.h b/extras/mini-os/include/list.h
index 33a6d80f29..fbb1fa8cc0 100644
--- a/extras/mini-os/include/list.h
+++ b/extras/mini-os/include/list.h
@@ -24,6 +24,12 @@ struct list_head {
 	(ptr)->next = (ptr); (ptr)->prev = (ptr); \
 } while (0)
 
+#define list_top(head, type, member)					  \
+({ 									  \
+	struct list_head *_head = (head);				  \
+	list_empty(_head) ? NULL : list_entry(_head->next, type, member); \
+})
+
 /*
  * Insert a new entry between two known consecutive entries. 
  *