X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=wrapper%2Flist.h;h=25e804069b71dd01f457c48b58cbc8c4e3022c50;hb=72e7b8dd70ff6d692fced6d8aa095731a5d31ae9;hp=0d79e5128c7b36555fee4a266d24a99a2550054a;hpb=7a09dcb7df9caab5c867f39f53009e860b98accb;p=lttng-modules.git

diff --git a/wrapper/list.h b/wrapper/list.h
index 0d79e512..25e80406 100644
--- a/wrapper/list.h
+++ b/wrapper/list.h
@@ -29,6 +29,13 @@
 #include <linux/list.h>
 #include <linux/rculist.h>
 
+/*
+ * return the first or the next element in an RCU protected hlist
+ */
+#define lttng_hlist_first_rcu(head)	(*((struct hlist_node __rcu **)(&(head)->first)))
+#define lttng_hlist_next_rcu(node)	(*((struct hlist_node __rcu **)(&(node)->next)))
+#define lttng_hlist_pprev_rcu(node)	(*((struct hlist_node __rcu **)((node)->pprev)))
+
 #define lttng_hlist_entry_safe(ptr, type, member) \
 	({ typeof(ptr) ____ptr = (ptr); \
 	   ____ptr ? hlist_entry(____ptr, type, member) : NULL; \