AcoSail/kernel_optimize_test
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net/hsr: using kfree_rcu() to simplify the code

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The callback function of call_rcu() just calls a kfree(), so we
can use kfree_rcu() instead of call_rcu() + callback function.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Arvid Brodin <arvid.brodin@alten.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Wei Yongjun 2013-12-16 14:05:50 +08:00 committed by David S. Miller
parent 7271174fbc
commit 1aee6cc2a5
1 changed files with 4 additions and 9 deletions
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13
net/hsr/hsr_framereg.c
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@ -127,11 +127,6 @@ int hsr_create_self_node(struct list_head *self_node_db,
return 0;
}
static void node_entry_reclaim(struct rcu_head *rh)
{
kfree(container_of(rh, struct node_entry, rcu_head));
}
/* Add/merge node to the database of nodes. 'skb' must contain an HSR
* supervision frame.
@ -175,7 +170,7 @@ struct node_entry *hsr_merge_node(struct hsr_priv *hsr_priv,
if (node && !ether_addr_equal(node->MacAddressA, hsr_sp->MacAddressA)) {
/* Node has changed its AddrA, frame was received from SlaveB */
list_del_rcu(&node->mac_list);
call_rcu(&node->rcu_head, node_entry_reclaim);
kfree_rcu(node, rcu_head);
node = NULL;
}
@ -183,7 +178,7 @@ struct node_entry *hsr_merge_node(struct hsr_priv *hsr_priv,
!ether_addr_equal(node->MacAddressB, hsr_ethsup->ethhdr.h_source)) {
/* Cables have been swapped */
list_del_rcu(&node->mac_list);
call_rcu(&node->rcu_head, node_entry_reclaim);
kfree_rcu(node, rcu_head);
node = NULL;
}
@ -192,7 +187,7 @@ struct node_entry *hsr_merge_node(struct hsr_priv *hsr_priv,
!ether_addr_equal(node->MacAddressA, hsr_ethsup->ethhdr.h_source)) {
/* Cables have been swapped */
list_del_rcu(&node->mac_list);
call_rcu(&node->rcu_head, node_entry_reclaim);
kfree_rcu(node, rcu_head);
node = NULL;
}
@ -417,7 +412,7 @@ void hsr_prune_nodes(struct hsr_priv *hsr_priv)
hsr_nl_nodedown(hsr_priv, node->MacAddressA);
list_del_rcu(&node->mac_list);
/* Note that we need to free this entry later: */
call_rcu(&node->rcu_head, node_entry_reclaim);
kfree_rcu(node, rcu_head);
}
}
rcu_read_unlock();