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authorWANG Cong <xiyou.wangcong@gmail.com>2014-02-13 19:46:28 (GMT)
committerDavid S. Miller <davem@davemloft.net>2014-02-14 20:49:55 (GMT)
commit1c213bd24ad04f4430031d20d740d7783162b099 (patch)
treeeb42b8d216e89008065634185fd6a5fcce5ec4e9 /net
parented1acc8cd8c22efa919da8d300bab646e01c2dce (diff)
downloadlinux-1c213bd24ad04f4430031d20d740d7783162b099.tar.xz
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>
Diffstat (limited to 'net')
-rw-r--r--net/8021q/vlan_dev.c11
-rw-r--r--net/bridge/br_device.c9
-rw-r--r--net/ipv4/ip_tunnel.c10
-rw-r--r--net/ipv6/ip6_gre.c9
-rw-r--r--net/ipv6/ip6_tunnel.c9
-rw-r--r--net/ipv6/ip6_vti.c8
-rw-r--r--net/ipv6/sit.c18
-rw-r--r--net/openvswitch/datapath.c8
-rw-r--r--net/openvswitch/vport.c10
9 files changed, 12 insertions, 80 deletions
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index de51c48..566adbf 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -556,7 +556,7 @@ static const struct net_device_ops vlan_netdev_ops;
static int vlan_dev_init(struct net_device *dev)
{
struct net_device *real_dev = vlan_dev_priv(dev)->real_dev;
- int subclass = 0, i;
+ int subclass = 0;
netif_carrier_off(dev);
@@ -606,17 +606,10 @@ static int vlan_dev_init(struct net_device *dev)
vlan_dev_set_lockdep_class(dev, subclass);
- vlan_dev_priv(dev)->vlan_pcpu_stats = alloc_percpu(struct vlan_pcpu_stats);
+ vlan_dev_priv(dev)->vlan_pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats);
if (!vlan_dev_priv(dev)->vlan_pcpu_stats)
return -ENOMEM;
- for_each_possible_cpu(i) {
- struct vlan_pcpu_stats *vlan_stat;
- vlan_stat = per_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats, i);
- u64_stats_init(&vlan_stat->syncp);
- }
-
-
return 0;
}
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index 63f0455..bf34451 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;
}
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index 50228be..3400d73 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -1041,19 +1041,13 @@ int ip_tunnel_init(struct net_device *dev)
{
struct ip_tunnel *tunnel = netdev_priv(dev);
struct iphdr *iph = &tunnel->parms.iph;
- int i, err;
+ int err;
dev->destructor = ip_tunnel_dev_free;
- dev->tstats = alloc_percpu(struct pcpu_sw_netstats);
+ dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
if (!dev->tstats)
return -ENOMEM;
- for_each_possible_cpu(i) {
- struct pcpu_sw_netstats *ipt_stats;
- ipt_stats = per_cpu_ptr(dev->tstats, i);
- u64_stats_init(&ipt_stats->syncp);
- }
-
tunnel->dst_cache = alloc_percpu(struct ip_tunnel_dst);
if (!tunnel->dst_cache) {
free_percpu(dev->tstats);
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index f3ffb43..c98338b 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -1454,7 +1454,6 @@ static void ip6gre_netlink_parms(struct nlattr *data[],
static int ip6gre_tap_init(struct net_device *dev)
{
struct ip6_tnl *tunnel;
- int i;
tunnel = netdev_priv(dev);
@@ -1464,16 +1463,10 @@ static int ip6gre_tap_init(struct net_device *dev)
ip6gre_tnl_link_config(tunnel, 1);
- dev->tstats = alloc_percpu(struct pcpu_sw_netstats);
+ dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
if (!dev->tstats)
return -ENOMEM;
- for_each_possible_cpu(i) {
- struct pcpu_sw_netstats *ip6gre_tap_stats;
- ip6gre_tap_stats = per_cpu_ptr(dev->tstats, i);
- u64_stats_init(&ip6gre_tap_stats->syncp);
- }
-
return 0;
}
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 5db8d31..8ad59f4 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1502,19 +1502,12 @@ static inline int
ip6_tnl_dev_init_gen(struct net_device *dev)
{
struct ip6_tnl *t = netdev_priv(dev);
- int i;
t->dev = dev;
t->net = dev_net(dev);
- dev->tstats = alloc_percpu(struct pcpu_sw_netstats);
+ dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
if (!dev->tstats)
return -ENOMEM;
-
- for_each_possible_cpu(i) {
- struct pcpu_sw_netstats *ip6_tnl_stats;
- ip6_tnl_stats = per_cpu_ptr(dev->tstats, i);
- u64_stats_init(&ip6_tnl_stats->syncp);
- }
return 0;
}
diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
index 2d19272..8649143 100644
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -731,18 +731,12 @@ static void vti6_dev_setup(struct net_device *dev)
static inline int vti6_dev_init_gen(struct net_device *dev)
{
struct ip6_tnl *t = netdev_priv(dev);
- int i;
t->dev = dev;
t->net = dev_net(dev);
- dev->tstats = alloc_percpu(struct pcpu_sw_netstats);
+ dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
if (!dev->tstats)
return -ENOMEM;
- for_each_possible_cpu(i) {
- struct pcpu_sw_netstats *stats;
- stats = per_cpu_ptr(dev->tstats, i);
- u64_stats_init(&stats->syncp);
- }
return 0;
}
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 3dfbcf1..958027b 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -1356,7 +1356,6 @@ static void ipip6_tunnel_setup(struct net_device *dev)
static int ipip6_tunnel_init(struct net_device *dev)
{
struct ip_tunnel *tunnel = netdev_priv(dev);
- int i;
tunnel->dev = dev;
tunnel->net = dev_net(dev);
@@ -1365,16 +1364,10 @@ static int ipip6_tunnel_init(struct net_device *dev)
memcpy(dev->broadcast, &tunnel->parms.iph.daddr, 4);
ipip6_tunnel_bind_dev(dev);
- dev->tstats = alloc_percpu(struct pcpu_sw_netstats);
+ dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
if (!dev->tstats)
return -ENOMEM;
- for_each_possible_cpu(i) {
- struct pcpu_sw_netstats *ipip6_tunnel_stats;
- ipip6_tunnel_stats = per_cpu_ptr(dev->tstats, i);
- u64_stats_init(&ipip6_tunnel_stats->syncp);
- }
-
return 0;
}
@@ -1384,7 +1377,6 @@ static int __net_init ipip6_fb_tunnel_init(struct net_device *dev)
struct iphdr *iph = &tunnel->parms.iph;
struct net *net = dev_net(dev);
struct sit_net *sitn = net_generic(net, sit_net_id);
- int i;
tunnel->dev = dev;
tunnel->net = dev_net(dev);
@@ -1395,16 +1387,10 @@ static int __net_init ipip6_fb_tunnel_init(struct net_device *dev)
iph->ihl = 5;
iph->ttl = 64;
- dev->tstats = alloc_percpu(struct pcpu_sw_netstats);
+ dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
if (!dev->tstats)
return -ENOMEM;
- for_each_possible_cpu(i) {
- struct pcpu_sw_netstats *ipip6_fb_stats;
- ipip6_fb_stats = per_cpu_ptr(dev->tstats, i);
- u64_stats_init(&ipip6_fb_stats->syncp);
- }
-
dev_hold(dev);
rcu_assign_pointer(sitn->tunnels_wc[0], tunnel);
return 0;
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index e9a48ba..3a95406 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -1215,18 +1215,12 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info)
if (err)
goto err_free_dp;
- dp->stats_percpu = alloc_percpu(struct dp_stats_percpu);
+ dp->stats_percpu = netdev_alloc_pcpu_stats(struct dp_stats_percpu);
if (!dp->stats_percpu) {
err = -ENOMEM;
goto err_destroy_table;
}
- for_each_possible_cpu(i) {
- struct dp_stats_percpu *dpath_stats;
- dpath_stats = per_cpu_ptr(dp->stats_percpu, i);
- u64_stats_init(&dpath_stats->sync);
- }
-
dp->ports = kmalloc(DP_VPORT_HASH_BUCKETS * sizeof(struct hlist_head),
GFP_KERNEL);
if (!dp->ports) {
diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c
index 208dd9a..3b4db32 100644
--- a/net/openvswitch/vport.c
+++ b/net/openvswitch/vport.c
@@ -121,7 +121,6 @@ struct vport *ovs_vport_alloc(int priv_size, const struct vport_ops *ops,
{
struct vport *vport;
size_t alloc_size;
- int i;
alloc_size = sizeof(struct vport);
if (priv_size) {
@@ -139,19 +138,12 @@ struct vport *ovs_vport_alloc(int priv_size, const struct vport_ops *ops,
vport->ops = ops;
INIT_HLIST_NODE(&vport->dp_hash_node);
- vport->percpu_stats = alloc_percpu(struct pcpu_sw_netstats);
+ vport->percpu_stats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
if (!vport->percpu_stats) {
kfree(vport);
return ERR_PTR(-ENOMEM);
}
- for_each_possible_cpu(i) {
- struct pcpu_sw_netstats *vport_stats;
- vport_stats = per_cpu_ptr(vport->percpu_stats, i);
- u64_stats_init(&vport_stats->syncp);
- }
-
-
spin_lock_init(&vport->stats_lock);
return vport;