net,rcu: convert call_rcu(free_dm_hw_stat) to kfree_rcu()

The rcu callback free_dm_hw_stat() just calls a kfree(),
so we use kfree_rcu() instead of the call_rcu(free_dm_hw_stat).

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

1 files changed, 2 insertions, 10 deletions

diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c
index 706502ff64aa..7f36b38e060f 100644
--- a/net/core/drop_monitor.c
+++ b/net/core/drop_monitor.c
@@ -207,14 +207,6 @@ static void trace_napi_poll_hit(void *ignore, struct napi_struct *napi)
         rcu_read_unlock();
 }
 
-
-static void free_dm_hw_stat(struct rcu_head *head)
-{
-        struct dm_hw_stat_delta *n;
-        n = container_of(head, struct dm_hw_stat_delta, rcu);
-        kfree(n);
-}
-
 static int set_all_monitor_traces(int state)
 {
         int rc = 0;
@@ -245,7 +237,7 @@ static int set_all_monitor_traces(int state)
                 list_for_each_entry_safe(new_stat, temp, &hw_stats_list, list) {
                         if (new_stat->dev == NULL) {
                                 list_del_rcu(&new_stat->list);
-                                call_rcu(&new_stat->rcu, free_dm_hw_stat);
+                                kfree_rcu(new_stat, rcu);
                         }
                 }
                 break;
@@ -314,7 +306,7 @@ static int dropmon_net_event(struct notifier_block *ev_block,
                                 new_stat->dev = NULL;
                                 if (trace_state == TRACE_OFF) {
                                         list_del_rcu(&new_stat->list);
-                                        call_rcu(&new_stat->rcu, free_dm_hw_stat);
+                                        kfree_rcu(new_stat, rcu);
                                         break;
                                 }
                         }