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authorAlexey Kardashevskiy <aik@ozlabs.ru>2013-08-28 12:37:39 +0400
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-10-11 10:21:14 +0400
commit81fcfb813fe99c30f77dd3ed9a4e541d14a9ed01 (patch)
treea172aff37e0127c3867b6d15f34145953099491a /include
parent8b5ede69d24db939f52b47effff2f6fe1e83e08b (diff)
downloadlinux-81fcfb813fe99c30f77dd3ed9a4e541d14a9ed01.tar.xz
hashtable: add hash_for_each_possible_rcu_notrace()
This adds hash_for_each_possible_rcu_notrace() which is basically a notrace clone of hash_for_each_possible_rcu() which cannot be used in real mode due to its tracing/debugging capability. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/hashtable.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/hashtable.h b/include/linux/hashtable.h
index a9df51f5d54c..519b6e2d769e 100644
--- a/include/linux/hashtable.h
+++ b/include/linux/hashtable.h
@@ -174,6 +174,21 @@ static inline void hash_del_rcu(struct hlist_node *node)
member)
/**
+ * hash_for_each_possible_rcu_notrace - iterate over all possible objects hashing
+ * to the same bucket in an rcu enabled hashtable in a rcu enabled hashtable
+ * @name: hashtable to iterate
+ * @obj: the type * to use as a loop cursor for each entry
+ * @member: the name of the hlist_node within the struct
+ * @key: the key of the objects to iterate over
+ *
+ * This is the same as hash_for_each_possible_rcu() except that it does
+ * not do any RCU debugging or tracing.
+ */
+#define hash_for_each_possible_rcu_notrace(name, obj, member, key) \
+ hlist_for_each_entry_rcu_notrace(obj, \
+ &name[hash_min(key, HASH_BITS(name))], member)
+
+/**
* hash_for_each_possible_safe - iterate over all possible objects hashing to the
* same bucket safe against removals
* @name: hashtable to iterate