diff options
| author | Tejun Heo <tj@kernel.org> | 2010-02-16 18:21:08 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-02-17 10:05:38 +0300 |
| commit | 47d742752df4c1088589d4424840bc761613ab2a (patch) | |
| tree | 186eec2c69a1f7149e08d354c36a34c21b58fa4f /drivers/net | |
| parent | 7d720c3e4f0c4fc152a6bf17e24244a3c85412d2 (diff) | |
| download | linux-47d742752df4c1088589d4424840bc761613ab2a.tar.xz | |
percpu: add __percpu sparse annotations to net drivers
Add __percpu sparse annotations to net drivers.
These annotations are to make sparse consider percpu variables to be
in a different address space and warn if accessed without going
through percpu accessors. This patch doesn't affect normal builds.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/chelsio/sge.c | 2 | ||||
| -rw-r--r-- | drivers/net/loopback.c | 16 | ||||
| -rw-r--r-- | drivers/net/veth.c | 4 |
3 files changed, 12 insertions, 10 deletions
diff --git a/drivers/net/chelsio/sge.c b/drivers/net/chelsio/sge.c index 109d2783e4d8..8e12505ac3aa 100644 --- a/drivers/net/chelsio/sge.c +++ b/drivers/net/chelsio/sge.c @@ -267,7 +267,7 @@ struct sge { struct sk_buff *espibug_skb[MAX_NPORTS]; u32 sge_control; /* shadow value of sge control reg */ struct sge_intr_counts stats; - struct sge_port_stats *port_stats[MAX_NPORTS]; + struct sge_port_stats __percpu *port_stats[MAX_NPORTS]; struct sched *tx_sched; struct cmdQ cmdQ[SGE_CMDQ_N] ____cacheline_aligned_in_smp; }; diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c index b9fcc9819837..72b7949c91b1 100644 --- a/drivers/net/loopback.c +++ b/drivers/net/loopback.c @@ -72,7 +72,8 @@ struct pcpu_lstats { static netdev_tx_t loopback_xmit(struct sk_buff *skb, struct net_device *dev) { - struct pcpu_lstats *pcpu_lstats, *lb_stats; + struct pcpu_lstats __percpu *pcpu_lstats; + struct pcpu_lstats *lb_stats; int len; skb_orphan(skb); @@ -80,7 +81,7 @@ static netdev_tx_t loopback_xmit(struct sk_buff *skb, skb->protocol = eth_type_trans(skb, dev); /* it's OK to use per_cpu_ptr() because BHs are off */ - pcpu_lstats = dev->ml_priv; + pcpu_lstats = (void __percpu __force *)dev->ml_priv; lb_stats = this_cpu_ptr(pcpu_lstats); len = skb->len; @@ -95,14 +96,14 @@ static netdev_tx_t loopback_xmit(struct sk_buff *skb, static struct net_device_stats *loopback_get_stats(struct net_device *dev) { - const struct pcpu_lstats *pcpu_lstats; + const struct pcpu_lstats __percpu *pcpu_lstats; struct net_device_stats *stats = &dev->stats; unsigned long bytes = 0; unsigned long packets = 0; unsigned long drops = 0; int i; - pcpu_lstats = dev->ml_priv; + pcpu_lstats = (void __percpu __force *)dev->ml_priv; for_each_possible_cpu(i) { const struct pcpu_lstats *lb_stats; @@ -135,19 +136,20 @@ static const struct ethtool_ops loopback_ethtool_ops = { static int loopback_dev_init(struct net_device *dev) { - struct pcpu_lstats *lstats; + struct pcpu_lstats __percpu *lstats; lstats = alloc_percpu(struct pcpu_lstats); if (!lstats) return -ENOMEM; - dev->ml_priv = lstats; + dev->ml_priv = (void __force *)lstats; return 0; } static void loopback_dev_free(struct net_device *dev) { - struct pcpu_lstats *lstats = dev->ml_priv; + struct pcpu_lstats __percpu *lstats = + (void __percpu __force *)dev->ml_priv; free_percpu(lstats); free_netdev(dev); diff --git a/drivers/net/veth.c b/drivers/net/veth.c index 3a15de56df9c..35609e64f6fd 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -34,7 +34,7 @@ struct veth_net_stats { struct veth_priv { struct net_device *peer; - struct veth_net_stats *stats; + struct veth_net_stats __percpu *stats; unsigned ip_summed; }; @@ -263,7 +263,7 @@ static int veth_change_mtu(struct net_device *dev, int new_mtu) static int veth_dev_init(struct net_device *dev) { - struct veth_net_stats *stats; + struct veth_net_stats __percpu *stats; struct veth_priv *priv; stats = alloc_percpu(struct veth_net_stats); |