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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
vanhempi 2bb4646fce
commit 7d720c3e4f
22 muutettua tiedostoa jossa 127 lisäystä ja 114 poistoa
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5
net/dccp/proto.c
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@@ -1005,12 +1005,13 @@ EXPORT_SYMBOL_GPL(dccp_shutdown);
static inline int dccp_mib_init(void)
{
return snmp_mib_init((void**)dccp_statistics, sizeof(struct dccp_mib));
return snmp_mib_init((void __percpu **)dccp_statistics,
sizeof(struct dccp_mib));
}
static inline void dccp_mib_exit(void)
{
snmp_mib_free((void**)dccp_statistics);
snmp_mib_free((void __percpu **)dccp_statistics);
}
static int thash_entries;