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

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The rcu callback xps_dev_maps_release() just calls a kfree(),
so we use kfree_rcu() instead of the call_rcu(xps_dev_maps_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>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
This commit is contained in:
Lai Jiangshan 2011-03-18 12:02:47 +08:00 committed by Paul E. McKenney
parent edc86d8a1c
commit b55071eb60
1 changed files with 2 additions and 10 deletions
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12
net/core/net-sysfs.c
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@ -891,14 +891,6 @@ static ssize_t show_xps_map(struct netdev_queue *queue,
return len;
}
static void xps_dev_maps_release(struct rcu_head *rcu)
{
struct xps_dev_maps *dev_maps =
container_of(rcu, struct xps_dev_maps, rcu);
kfree(dev_maps);
}
static DEFINE_MUTEX(xps_map_mutex);
#define xmap_dereference(P) \
rcu_dereference_protected((P), lockdep_is_held(&xps_map_mutex))
@ -1008,7 +1000,7 @@ static ssize_t store_xps_map(struct netdev_queue *queue,
}
if (dev_maps)
call_rcu(&dev_maps->rcu, xps_dev_maps_release);
kfree_rcu(dev_maps, rcu);
netdev_queue_numa_node_write(queue, (numa_node >= 0) ? numa_node :
NUMA_NO_NODE);
@ -1080,7 +1072,7 @@ static void netdev_queue_release(struct kobject *kobj)
if (!nonempty) {
RCU_INIT_POINTER(dev->xps_maps, NULL);
call_rcu(&dev_maps->rcu, xps_dev_maps_release);
kfree_rcu(dev_maps, rcu);
}
}