From: Keir Fraser <keir.fraser@citrix.com>
Date: Fri, 18 Jul 2008 14:44:39 +0000 (+0100)
Subject: mini-os is missing list_top in its list.h
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14171^2~23
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=93a9aafe96ecb28c4271adb1e227a49c343f1574;p=xen.git

mini-os is missing list_top in its list.h

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

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. 
  *