[PATCH 1/5] linux: list: add a function to count list nodes
Sughosh Ganu
sughosh.ganu at linaro.org
Tue Jul 30 13:11:28 CEST 2024
Add a function to count the nodes of a list.
Taken from linux 6.11-rc1 tag commit 8400291e289e.
Signed-off-by: Sughosh Ganu <sughosh.ganu at linaro.org>
---
include/linux/list.h | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/include/linux/list.h b/include/linux/list.h
index 6910721c00..0f9d939b05 100644
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -547,6 +547,21 @@ static inline void list_splice_tail_init(struct list_head *list,
&pos->member != (head); \
pos = n, n = list_entry(n->member.prev, typeof(*n), member))
+/**
+ * list_count_nodes - count nodes in the list
+ * @head: the head for your list.
+ */
+static inline size_t list_count_nodes(struct list_head *head)
+{
+ struct list_head *pos;
+ size_t count = 0;
+
+ list_for_each(pos, head)
+ count++;
+
+ return count;
+}
+
/*
* Double linked lists with a single pointer list head.
* Mostly useful for hash tables where the two pointer list head is
--
2.34.1
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