net,rcu: convert call_rcu(xps_map_release) to kfree_rcu() (edc86d8a) · Commits · 戴 / test

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:

net/core/net-sysfs.c

+2 −9

Original line number	Diff line number	Diff line
		@@ -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;
		}
		}