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Message-Id: <1372309356-28320-5-git-send-email-aik@ozlabs.ru>
Date: Thu, 27 Jun 2013 15:02:32 +1000
From: Alexey Kardashevskiy <aik@...abs.ru>
To: linuxppc-dev@...ts.ozlabs.org
Cc: Alexey Kardashevskiy <aik@...abs.ru>,
David Gibson <david@...son.dropbear.id.au>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Alexander Graf <agraf@...e.de>,
Paul Mackerras <paulus@...ba.org>,
Alex Williamson <alex.williamson@...hat.com>,
"Paul E . McKenney" <paulmck@...ux.vnet.ibm.com>,
kvm@...r.kernel.org, linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org, kvm-ppc@...r.kernel.org
Subject: [PATCH 4/8] 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@...abs.ru>
---
include/linux/hashtable.h | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/include/linux/hashtable.h b/include/linux/hashtable.h
index a9df51f..af8b169 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
--
1.7.10.4
--
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