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authorAntonio Quartulli <ordex@autistici.org>2013-05-07 00:29:22 +0200
committerAntonio Quartulli <antonio@meshcoding.com>2013-10-12 09:51:28 +0200
commit210260594782ba9bc52732d84880573466c13441 (patch)
tree9832ec4671a2358241904e56727c73c78bc177b3 /net/batman-adv
parentd7ee88d048542f8052fc2d3c1413ac2287d826f5 (diff)
downloadblackbird-op-linux-210260594782ba9bc52732d84880573466c13441.tar.gz
blackbird-op-linux-210260594782ba9bc52732d84880573466c13441.zip
batman-adv: don't use call_rcu if not needed
batadv_tt_global_entry_free_ref uses call_rcu to schedule a function which will only free the global entry itself. For this reason call_rcu is useless and kfree_rcu can be used to simplify the code. Signed-off-by: Antonio Quartulli <ordex@autistici.org> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Diffstat (limited to 'net/batman-adv')
-rw-r--r--net/batman-adv/translation-table.c20
1 files changed, 6 insertions, 14 deletions
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index b3c43691bc6c..34fa6cc381c9 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -117,25 +117,17 @@ batadv_tt_local_entry_free_ref(struct batadv_tt_local_entry *tt_local_entry)
kfree_rcu(tt_local_entry, common.rcu);
}
-static void batadv_tt_global_entry_free_rcu(struct rcu_head *rcu)
-{
- struct batadv_tt_common_entry *tt_common_entry;
- struct batadv_tt_global_entry *tt_global_entry;
-
- tt_common_entry = container_of(rcu, struct batadv_tt_common_entry, rcu);
- tt_global_entry = container_of(tt_common_entry,
- struct batadv_tt_global_entry, common);
-
- kfree(tt_global_entry);
-}
-
+/**
+ * batadv_tt_global_entry_free_ref - decrement the refcounter for a
+ * tt_global_entry and possibly free it
+ * @tt_global_entry: the object to free
+ */
static void
batadv_tt_global_entry_free_ref(struct batadv_tt_global_entry *tt_global_entry)
{
if (atomic_dec_and_test(&tt_global_entry->common.refcount)) {
batadv_tt_global_del_orig_list(tt_global_entry);
- call_rcu(&tt_global_entry->common.rcu,
- batadv_tt_global_entry_free_rcu);
+ kfree_rcu(tt_global_entry, common.rcu);
}
}
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