net: introduce netdev_alloc_pcpu_stats() for drivers

There are many drivers calling alloc_percpu() to allocate pcpu stats
and then initializing ->syncp. So just introduce a helper function for them.

Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 8 deletions

diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index 63f0455c0bc3..bf34451743a1 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -88,18 +88,11 @@ out:
 static int br_dev_init(struct net_device *dev)
 {
         struct net_bridge *br = netdev_priv(dev);
-        int i;
 
-        br->stats = alloc_percpu(struct pcpu_sw_netstats);
+        br->stats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
         if (!br->stats)
                 return -ENOMEM;
 
-        for_each_possible_cpu(i) {
-                struct pcpu_sw_netstats *br_dev_stats;
-                br_dev_stats = per_cpu_ptr(br->stats, i);
-                u64_stats_init(&br_dev_stats->syncp);
-        }
-
         return 0;
 }