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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>
hifive-unleashed-5.1
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/net/dummy.c
View File

@ -88,16 +88,10 @@ static netdev_tx_t dummy_xmit(struct sk_buff *skb, struct net_device *dev)
static int dummy_dev_init(struct net_device *dev)
{
int i;
dev->dstats = alloc_percpu(struct pcpu_dstats);
dev->dstats = netdev_alloc_pcpu_stats(struct pcpu_dstats);
if (!dev->dstats)
return -ENOMEM;
for_each_possible_cpu(i) {
struct pcpu_dstats *dstats;
dstats = per_cpu_ptr(dev->dstats, i);
u64_stats_init(&dstats->syncp);
}
return 0;
}

9
drivers/net/ethernet/marvell/mvneta.c
View File

@ -2784,7 +2784,6 @@ static int mvneta_probe(struct platform_device *pdev)
const char *mac_from;
int phy_mode;
int err;
int cpu;
/* Our multiqueue support is not complete, so for now, only
* allow the usage of the first RX queue
@ -2845,18 +2844,12 @@ static int mvneta_probe(struct platform_device *pdev)
}
/* Alloc per-cpu stats */
pp->stats = alloc_percpu(struct mvneta_pcpu_stats);
pp->stats = netdev_alloc_pcpu_stats(struct mvneta_pcpu_stats);
if (!pp->stats) {
err = -ENOMEM;
goto err_unmap;
}
for_each_possible_cpu(cpu) {
struct mvneta_pcpu_stats *stats;
stats = per_cpu_ptr(pp->stats, cpu);
u64_stats_init(&stats->syncp);
}
dt_mac_addr = of_get_mac_address(dn);
if (dt_mac_addr) {
mac_from = "device tree";

9
drivers/net/loopback.c
View File

@ -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;
}

9
drivers/net/macvlan.c
View File

@ -534,7 +534,6 @@ static int macvlan_init(struct net_device *dev)
{
struct macvlan_dev *vlan = netdev_priv(dev);
const struct net_device *lowerdev = vlan->lowerdev;
int i;
dev->state = (dev->state & ~MACVLAN_STATE_MASK) |
(lowerdev->state & MACVLAN_STATE_MASK);
@ -546,16 +545,10 @@ static int macvlan_init(struct net_device *dev)
macvlan_set_lockdep_class(dev);
vlan->pcpu_stats = alloc_percpu(struct vlan_pcpu_stats);
vlan->pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats);
if (!vlan->pcpu_stats)
return -ENOMEM;
for_each_possible_cpu(i) {
struct vlan_pcpu_stats *mvlstats;
mvlstats = per_cpu_ptr(vlan->pcpu_stats, i);
u64_stats_init(&mvlstats->syncp);
}
return 0;
}

11
drivers/net/nlmon.c
View File

@ -47,16 +47,7 @@ static int nlmon_change_mtu(struct net_device *dev, int new_mtu)
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;
}

8
drivers/net/team/team.c
View File

@ -1540,16 +1540,10 @@ static int team_init(struct net_device *dev)
mutex_init(&team->lock);
team_set_no_mode(team);
team->pcpu_stats = alloc_percpu(struct team_pcpu_stats);
team->pcpu_stats = netdev_alloc_pcpu_stats(struct team_pcpu_stats);
if (!team->pcpu_stats)
return -ENOMEM;
for_each_possible_cpu(i) {
struct team_pcpu_stats *team_stats;
team_stats = per_cpu_ptr(team->pcpu_stats, i);
u64_stats_init(&team_stats->syncp);
}
for (i = 0; i < TEAM_PORT_HASHENTRIES; i++)
INIT_HLIST_HEAD(&team->en_port_hlist[i]);
INIT_LIST_HEAD(&team->port_list);

11
drivers/net/veth.c
View File

@ -235,18 +235,9 @@ static int veth_change_mtu(struct net_device *dev, int new_mtu)
static int veth_dev_init(struct net_device *dev)
{
int i;
dev->vstats = alloc_percpu(struct pcpu_vstats);
dev->vstats = netdev_alloc_pcpu_stats(struct pcpu_vstats);
if (!dev->vstats)
return -ENOMEM;
for_each_possible_cpu(i) {
struct pcpu_vstats *veth_stats;
veth_stats = per_cpu_ptr(dev->vstats, i);
u64_stats_init(&veth_stats->syncp);
}
return 0;
}

10
drivers/net/vxlan.c
View File

@ -1978,19 +1978,11 @@ static int vxlan_init(struct net_device *dev)
struct vxlan_dev *vxlan = netdev_priv(dev);
struct vxlan_net *vn = net_generic(dev_net(dev), vxlan_net_id);
struct vxlan_sock *vs;
int i;
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 *vxlan_stats;
vxlan_stats = per_cpu_ptr(dev->tstats, i);
u64_stats_init(&vxlan_stats->syncp);
}
spin_lock(&vn->sock_lock);
vs = vxlan_find_sock(dev_net(dev), vxlan->dst_port);
if (vs) {

8
drivers/net/xen-netfront.c
View File

@ -1281,16 +1281,10 @@ static struct net_device *xennet_create_dev(struct xenbus_device *dev)
np->rx_refill_timer.function = rx_refill_timeout;
err = -ENOMEM;
np->stats = alloc_percpu(struct netfront_stats);
np->stats = netdev_alloc_pcpu_stats(struct netfront_stats);
if (np->stats == NULL)
goto exit;
for_each_possible_cpu(i) {
struct netfront_stats *xen_nf_stats;
xen_nf_stats = per_cpu_ptr(np->stats, i);
u64_stats_init(&xen_nf_stats->syncp);
}
/* Initialise tx_skbs as a free chain containing every entry. */
np->tx_skb_freelist = 0;
for (i = 0; i < NET_TX_RING_SIZE; i++) {

14
include/linux/netdevice.h
View File

@ -1726,6 +1726,20 @@ struct pcpu_sw_netstats {
struct u64_stats_sync syncp;
};
#define netdev_alloc_pcpu_stats(type) \
({ \
typeof(type) *pcpu_stats = alloc_percpu(type); \
if (pcpu_stats) { \
int i; \
for_each_possible_cpu(i) { \
typeof(type) *stat; \
stat = per_cpu_ptr(pcpu_stats, i); \
u64_stats_init(&stat->syncp); \
} \
} \
pcpu_stats; \
})
#include <linux/notifier.h>
/* netdevice notifier chain. Please remember to update the rtnetlink

11
net/8021q/vlan_dev.c
View File

@ -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;
}

9
net/bridge/br_device.c
View File

@ -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;
}

10
net/ipv4/ip_tunnel.c
View File

@ -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);

9
net/ipv6/ip6_gre.c
View File

@ -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;
}

9
net/ipv6/ip6_tunnel.c
View File

@ -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;
}

8
net/ipv6/ip6_vti.c
View File

@ -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;
}

18
net/ipv6/sit.c
View File

@ -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;

8
net/openvswitch/datapath.c
View File

@ -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) {

10
net/openvswitch/vport.c
View File

@ -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;