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net: introduce netdev_alloc_pcpu_stats() for drivers

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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>
This commit is contained in:
WANG Cong
2014-02-13 11:46:28 -08:00
committed by David S. Miller
parent ed1acc8cd8
commit 1c213bd24a
19 changed files with 35 additions and 154 deletions
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9
drivers/net/loopback.c
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@@ -136,16 +136,9 @@ static const struct ethtool_ops loopback_ethtool_ops = {
static int loopback_dev_init(struct net_device *dev)
{
int i;
dev->lstats = alloc_percpu(struct pcpu_lstats);
dev->lstats = netdev_alloc_pcpu_stats(struct pcpu_lstats);
if (!dev->lstats)
return -ENOMEM;
for_each_possible_cpu(i) {
struct pcpu_lstats *lb_stats;
lb_stats = per_cpu_ptr(dev->lstats, i);
u64_stats_init(&lb_stats->syncp);
}
return 0;
}