percpu: add __percpu sparse annotations to net

Add __percpu sparse annotations to net.

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.

The macro and type tricks around snmp stats make things a bit
interesting.  DEFINE/DECLARE_SNMP_STAT() macros mark the target field
as __percpu and SNMP_UPD_PO_STATS() macro is updated accordingly.  All
snmp_mib_*() users which used to cast the argument to (void **) are
updated to cast it to (void __percpu **).

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Vlad Yasevich <vladislav.yasevich@hp.com>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
index 5685296017e9..6abdcac1b2e8 100644
--- a/net/8021q/vlan.h
+++ b/net/8021q/vlan.h
@@ -61,7 +61,7 @@ struct vlan_dev_info {
         struct proc_dir_entry                   *dent;
         unsigned long                           cnt_inc_headroom_on_tx;
         unsigned long                           cnt_encap_on_xmit;
-        struct vlan_rx_stats                    *vlan_rx_stats;
+        struct vlan_rx_stats __percpu           *vlan_rx_stats;
 };
 
 static inline struct vlan_dev_info *vlan_dev_info(const struct net_device *dev)