* [PATCH] missing mini-os list_top macro
@ 2008-07-18 14:18 Diego Ongaro
0 siblings, 0 replies; only message in thread
From: Diego Ongaro @ 2008-07-18 14:18 UTC (permalink / raw)
To: xen-devel
mini-os is missing list_top in its list.h
---
diff -r 37289395de03 extras/mini-os/include/list.h
--- a/extras/mini-os/include/list.h Fri Jul 18 14:20:13 2008 +0100
+++ b/extras/mini-os/include/list.h Fri Jul 18 15:05:42 2008 +0100
@@ -23,6 +23,12 @@
#define INIT_LIST_HEAD(ptr) do { \
(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.
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2008-07-18 14:18 [PATCH] missing mini-os list_top macro Diego Ongaro
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