[tip/core/rcu,58/86] net,rcu: convert call_rcu(xps_map_release) to kfree_rcu()

Message ID 1304256126-26015-58-git-send-email-paulmck@linux.vnet.ibm.com
State New
Headers show

Commit Message

Paul E. McKenney May 1, 2011, 1:21 p.m.
From: Lai Jiangshan <laijs@cn.fujitsu.com>

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

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
 net/core/net-sysfs.c |   11 ++---------
 1 files changed, 2 insertions(+), 9 deletions(-)

Patch

diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index c410f28..48ffc21 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -891,13 +891,6 @@  static ssize_t show_xps_map(struct netdev_queue *queue,
 	return len;
 }
 
-static void xps_map_release(struct rcu_head *rcu)
-{
-	struct xps_map *map = container_of(rcu, struct xps_map, rcu);
-
-	kfree(map);
-}
-
 static void xps_dev_maps_release(struct rcu_head *rcu)
 {
 	struct xps_dev_maps *dev_maps =
@@ -1002,7 +995,7 @@  static ssize_t store_xps_map(struct netdev_queue *queue,
 		map = dev_maps ?
 			xmap_dereference(dev_maps->cpu_map[cpu]) : NULL;
 		if (map && xmap_dereference(new_dev_maps->cpu_map[cpu]) != map)
-			call_rcu(&map->rcu, xps_map_release);
+			kfree_rcu(map, rcu);
 		if (new_dev_maps->cpu_map[cpu])
 			nonempty = 1;
 	}
@@ -1077,7 +1070,7 @@  static void netdev_queue_release(struct kobject *kobj)
 				else {
 					RCU_INIT_POINTER(dev_maps->cpu_map[i],
 					    NULL);
-					call_rcu(&map->rcu, xps_map_release);
+					kfree_rcu(map, rcu);
 					map = NULL;
 				}
 			}