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>
diff --git a/drivers/net/nlmon.c b/drivers/net/nlmon.c
index d2bb12b..14ce7de 100644
--- a/drivers/net/nlmon.c
+++ b/drivers/net/nlmon.c
@@ -47,16 +47,7 @@
static int nlmon_dev_init(struct net_device *dev)
{
- int i;
-
- dev->lstats = alloc_percpu(struct pcpu_lstats);
-
- for_each_possible_cpu(i) {
- struct pcpu_lstats *nlmstats;
- nlmstats = per_cpu_ptr(dev->lstats, i);
- u64_stats_init(&nlmstats->syncp);
- }
-
+ dev->lstats = netdev_alloc_pcpu_stats(struct pcpu_lstats);
return dev->lstats == NULL ? -ENOMEM : 0;
}