[RFC] [Patch 1/6] statistics infrastructure - prerequisite: listoperation

From: Martin Peschke
Date: Wed May 17 2006 - 14:50:23 EST


This patch adds another list_for_each_* derivate. I can't work around it
because there is a list that I need to search both ways.

Signed-off-by: Martin Peschke <mp3@xxxxxxxxxx>
---

list.h | 12 ++++++++++++
1 files changed, 12 insertions(+)

diff -Nurp a/include/linux/list.h b/include/linux/list.h
--- a/include/linux/list.h 2006-05-17 19:02:03.000000000 +0200
+++ b/include/linux/list.h 2006-05-17 19:05:41.000000000 +0200
@@ -411,6 +411,18 @@ static inline void list_splice_init(stru
pos = list_entry(pos->member.next, typeof(*pos), member))

/**
+ * list_for_each_entry_continue_reverse - iterate backwards over list
+ * of given type continuing before existing point
+ * @pos: the type * to use as a loop counter.
+ * @head: the head for your list.
+ * @member: the name of the list_struct within the struct.
+ */
+#define list_for_each_entry_continue_reverse(pos, head, member) \
+ for (pos = list_entry(pos->member.prev, typeof(*pos), member); \
+ prefetch(pos->member.prev), &pos->member != (head); \
+ pos = list_entry(pos->member.prev, typeof(*pos), member))
+
+/**
* list_for_each_entry_from - iterate over list of given type
* continuing from existing point
* @pos: the type * to use as a loop counter.


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