From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Fri, 21 Jun 2013 16:48:18 +0000 (-0400)
Subject: rculist: implement cds_list_add_tail_rcu
X-Git-Tag: v0.8.0~60
X-Git-Url: http://git.lttng.org/?p=userspace-rcu.git;a=commitdiff_plain;h=e2fcb2d325f216c558beca525ac25e4e42115dbb

rculist: implement cds_list_add_tail_rcu

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/urcu/rculist.h b/urcu/rculist.h
index a177f20..ab88226 100644
--- a/urcu/rculist.h
+++ b/urcu/rculist.h
@@ -40,6 +40,17 @@ void cds_list_add_rcu(struct cds_list_head *newp, struct cds_list_head *head)
 	head->next = newp;
 }
 
+/* Add new element at the tail of the list. */
+static inline
+void cds_list_add_tail_rcu(struct cds_list_head *newp,
+		struct cds_list_head *head)
+{
+	newp->next = head;
+	newp->prev = head->prev;
+	rcu_assign_pointer(head->prev->next, newp);
+	head->prev = newp;
+}
+
 /*
  * Replace an old entry atomically with respect to concurrent RCU
  * traversal. Mutual exclusion against concurrent updates is required