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percpu: add __percpu sparse annotations to net

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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>
This commit is contained in:
Tejun Heo
2010-02-16 15:20:26 +00:00
committed by David S. Miller
parent 2bb4646fce
commit 7d720c3e4f
22 changed files with 127 additions and 114 deletions
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2
include/net/netns/conntrack.h
View File

@ -17,7 +17,7 @@ struct netns_ct {
struct hlist_head *expect_hash;
struct hlist_nulls_head unconfirmed;
struct hlist_nulls_head dying;
struct ip_conntrack_stat *stat;
struct ip_conntrack_stat __percpu *stat;
int sysctl_events;
unsigned int sysctl_events_retry_timeout;
int sysctl_acct;

2
include/net/netns/core.h
View File

@ -10,7 +10,7 @@ struct netns_core {
int sysctl_somaxconn;
struct prot_inuse *inuse;
struct prot_inuse __percpu *inuse;
};
#endif