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Subject[PATCH 3/8] percpu: add __percpu sparse annotations to net
Date
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>
Cc: "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
---
include/net/ip.h | 6 ++--
include/net/ipcomp.h | 2 +-
include/net/neighbour.h | 2 +-
include/net/netns/conntrack.h | 2 +-
include/net/netns/core.h | 2 +-
include/net/route.h | 2 +-
include/net/snmp.h | 12 +++++++---
include/net/tcp.h | 2 +-
net/8021q/vlan.h | 2 +-
net/dccp/proto.c | 5 ++-
net/ipv4/af_inet.c | 46 ++++++++++++++++++++--------------------
net/ipv4/proc.c | 28 ++++++++++++------------
net/ipv4/route.c | 2 +-
net/ipv4/tcp.c | 21 ++++++++++--------
net/ipv6/addrconf.c | 24 ++++++++++----------
net/ipv6/af_inet6.c | 28 ++++++++++++------------
net/ipv6/proc.c | 24 ++++++++++++---------
net/sctp/proc.c | 2 +-
net/sctp/protocol.c | 5 ++-
net/xfrm/xfrm_ipcomp.c | 16 +++++++-------
net/xfrm/xfrm_policy.c | 6 ++--
net/xfrm/xfrm_proc.c | 3 +-
22 files changed, 128 insertions(+), 114 deletions(-)

diff --git a/include/net/ip.h b/include/net/ip.h
index fb63371..667a55b 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -174,9 +174,9 @@ extern struct ipv4_config ipv4_config;
#define NET_ADD_STATS_BH(net, field, adnd) SNMP_ADD_STATS_BH((net)->mib.net_statistics, field, adnd)
#define NET_ADD_STATS_USER(net, field, adnd) SNMP_ADD_STATS_USER((net)->mib.net_statistics, field, adnd)

-extern unsigned long snmp_fold_field(void *mib[], int offt);
-extern int snmp_mib_init(void *ptr[2], size_t mibsize);
-extern void snmp_mib_free(void *ptr[2]);
+extern unsigned long snmp_fold_field(void __percpu *mib[], int offt);
+extern int snmp_mib_init(void __percpu *ptr[2], size_t mibsize);
+extern void snmp_mib_free(void __percpu *ptr[2]);

extern struct local_ports {
seqlock_t lock;
diff --git a/include/net/ipcomp.h b/include/net/ipcomp.h
index 2a1092a..cc4f30c 100644
--- a/include/net/ipcomp.h
+++ b/include/net/ipcomp.h
@@ -9,7 +9,7 @@ struct crypto_comp;

struct ipcomp_data {
u16 threshold;
- struct crypto_comp **tfms;
+ struct crypto_comp * __percpu *tfms;
};

struct ip_comp_hdr;
diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index b017320..daf935b 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -164,7 +164,7 @@ struct neigh_table {
rwlock_t lock;
unsigned long last_rand;
struct kmem_cache *kmem_cachep;
- struct neigh_statistics *stats;
+ struct neigh_statistics __percpu *stats;
struct neighbour **hash_buckets;
unsigned int hash_mask;
__u32 hash_rnd;
diff --git a/include/net/netns/conntrack.h b/include/net/netns/conntrack.h
index ba1ba0c..1531c07 100644
--- a/include/net/netns/conntrack.h
+++ b/include/net/netns/conntrack.h
@@ -15,7 +15,7 @@ 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;
diff --git a/include/net/netns/core.h b/include/net/netns/core.h
index 24d4be7..78eb1ff 100644
--- a/include/net/netns/core.h
+++ b/include/net/netns/core.h
@@ -10,7 +10,7 @@ struct netns_core {

int sysctl_somaxconn;

- struct prot_inuse *inuse;
+ struct prot_inuse __percpu *inuse;
};

#endif
diff --git a/include/net/route.h b/include/net/route.h
index bce6dd6..2c9fba7 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -101,7 +101,7 @@ struct rt_cache_stat {
unsigned int out_hlist_search;
};

-extern struct ip_rt_acct *ip_rt_acct;
+extern struct ip_rt_acct __percpu *ip_rt_acct;

struct in_device;
extern int ip_rt_init(void);
diff --git a/include/net/snmp.h b/include/net/snmp.h
index f0d756f..d065976 100644
--- a/include/net/snmp.h
+++ b/include/net/snmp.h
@@ -129,9 +129,9 @@ struct linux_xfrm_mib {
* nonlocked_atomic_inc() primitives -AK
*/
#define DEFINE_SNMP_STAT(type, name) \
- __typeof__(type) *name[2]
+ __typeof__(type) __percpu *name[2]
#define DECLARE_SNMP_STAT(type, name) \
- extern __typeof__(type) *name[2]
+ extern __typeof__(type) __percpu *name[2]

#define SNMP_STAT_BHPTR(name) (name[0])
#define SNMP_STAT_USRPTR(name) (name[1])
@@ -148,9 +148,13 @@ struct linux_xfrm_mib {
__this_cpu_add(mib[0]->mibs[field], addend)
#define SNMP_ADD_STATS_USER(mib, field, addend) \
this_cpu_add(mib[1]->mibs[field], addend)
+/*
+ * Use "__typeof__(*mib[0]) *ptr" instead of "__typeof__(mib[0]) ptr"
+ * to make @ptr a non-percpu pointer.
+ */
#define SNMP_UPD_PO_STATS(mib, basefield, addend) \
do { \
- __typeof__(mib[0]) ptr; \
+ __typeof__(*mib[0]) *ptr; \
preempt_disable(); \
ptr = this_cpu_ptr((mib)[!in_softirq()]); \
ptr->mibs[basefield##PKTS]++; \
@@ -159,7 +163,7 @@ struct linux_xfrm_mib {
} while (0)
#define SNMP_UPD_PO_STATS_BH(mib, basefield, addend) \
do { \
- __typeof__(mib[0]) ptr = \
+ __typeof__(*mib[0]) *ptr = \
__this_cpu_ptr((mib)[!in_softirq()]); \
ptr->mibs[basefield##PKTS]++; \
ptr->mibs[basefield##OCTETS] += addend;\
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 34f5cc2..0511317 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1193,7 +1193,7 @@ extern int tcp_v4_md5_do_del(struct sock *sk,
#define tcp_twsk_md5_key(twsk) NULL
#endif

-extern struct tcp_md5sig_pool **tcp_alloc_md5sig_pool(struct sock *);
+extern struct tcp_md5sig_pool * __percpu *tcp_alloc_md5sig_pool(struct sock *);
extern void tcp_free_md5sig_pool(void);

extern struct tcp_md5sig_pool *__tcp_get_md5sig_pool(int cpu);
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
index 5685296..6abdcac 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)
diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index 671cd14..fb3b9f8 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -1003,12 +1003,13 @@ 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;
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 7d12c6a..33b7dff 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1385,7 +1385,7 @@ int inet_ctl_sock_create(struct sock **sk, unsigned short family,
}
EXPORT_SYMBOL_GPL(inet_ctl_sock_create);

-unsigned long snmp_fold_field(void *mib[], int offt)
+unsigned long snmp_fold_field(void __percpu *mib[], int offt)
{
unsigned long res = 0;
int i;
@@ -1398,7 +1398,7 @@ unsigned long snmp_fold_field(void *mib[], int offt)
}
EXPORT_SYMBOL_GPL(snmp_fold_field);

-int snmp_mib_init(void *ptr[2], size_t mibsize)
+int snmp_mib_init(void __percpu *ptr[2], size_t mibsize)
{
BUG_ON(ptr == NULL);
ptr[0] = __alloc_percpu(mibsize, __alignof__(unsigned long long));
@@ -1416,7 +1416,7 @@ err0:
}
EXPORT_SYMBOL_GPL(snmp_mib_init);

-void snmp_mib_free(void *ptr[2])
+void snmp_mib_free(void __percpu *ptr[2])
{
BUG_ON(ptr == NULL);
free_percpu(ptr[0]);
@@ -1460,25 +1460,25 @@ static const struct net_protocol icmp_protocol = {

static __net_init int ipv4_mib_init_net(struct net *net)
{
- if (snmp_mib_init((void **)net->mib.tcp_statistics,
+ if (snmp_mib_init((void __percpu **)net->mib.tcp_statistics,
sizeof(struct tcp_mib)) < 0)
goto err_tcp_mib;
- if (snmp_mib_init((void **)net->mib.ip_statistics,
+ if (snmp_mib_init((void __percpu **)net->mib.ip_statistics,
sizeof(struct ipstats_mib)) < 0)
goto err_ip_mib;
- if (snmp_mib_init((void **)net->mib.net_statistics,
+ if (snmp_mib_init((void __percpu **)net->mib.net_statistics,
sizeof(struct linux_mib)) < 0)
goto err_net_mib;
- if (snmp_mib_init((void **)net->mib.udp_statistics,
+ if (snmp_mib_init((void __percpu **)net->mib.udp_statistics,
sizeof(struct udp_mib)) < 0)
goto err_udp_mib;
- if (snmp_mib_init((void **)net->mib.udplite_statistics,
+ if (snmp_mib_init((void __percpu **)net->mib.udplite_statistics,
sizeof(struct udp_mib)) < 0)
goto err_udplite_mib;
- if (snmp_mib_init((void **)net->mib.icmp_statistics,
+ if (snmp_mib_init((void __percpu **)net->mib.icmp_statistics,
sizeof(struct icmp_mib)) < 0)
goto err_icmp_mib;
- if (snmp_mib_init((void **)net->mib.icmpmsg_statistics,
+ if (snmp_mib_init((void __percpu **)net->mib.icmpmsg_statistics,
sizeof(struct icmpmsg_mib)) < 0)
goto err_icmpmsg_mib;

@@ -1486,30 +1486,30 @@ static __net_init int ipv4_mib_init_net(struct net *net)
return 0;

err_icmpmsg_mib:
- snmp_mib_free((void **)net->mib.icmp_statistics);
+ snmp_mib_free((void __percpu **)net->mib.icmp_statistics);
err_icmp_mib:
- snmp_mib_free((void **)net->mib.udplite_statistics);
+ snmp_mib_free((void __percpu **)net->mib.udplite_statistics);
err_udplite_mib:
- snmp_mib_free((void **)net->mib.udp_statistics);
+ snmp_mib_free((void __percpu **)net->mib.udp_statistics);
err_udp_mib:
- snmp_mib_free((void **)net->mib.net_statistics);
+ snmp_mib_free((void __percpu **)net->mib.net_statistics);
err_net_mib:
- snmp_mib_free((void **)net->mib.ip_statistics);
+ snmp_mib_free((void __percpu **)net->mib.ip_statistics);
err_ip_mib:
- snmp_mib_free((void **)net->mib.tcp_statistics);
+ snmp_mib_free((void __percpu **)net->mib.tcp_statistics);
err_tcp_mib:
return -ENOMEM;
}

static __net_exit void ipv4_mib_exit_net(struct net *net)
{
- snmp_mib_free((void **)net->mib.icmpmsg_statistics);
- snmp_mib_free((void **)net->mib.icmp_statistics);
- snmp_mib_free((void **)net->mib.udplite_statistics);
- snmp_mib_free((void **)net->mib.udp_statistics);
- snmp_mib_free((void **)net->mib.net_statistics);
- snmp_mib_free((void **)net->mib.ip_statistics);
- snmp_mib_free((void **)net->mib.tcp_statistics);
+ snmp_mib_free((void __percpu **)net->mib.icmpmsg_statistics);
+ snmp_mib_free((void __percpu **)net->mib.icmp_statistics);
+ snmp_mib_free((void __percpu **)net->mib.udplite_statistics);
+ snmp_mib_free((void __percpu **)net->mib.udp_statistics);
+ snmp_mib_free((void __percpu **)net->mib.net_statistics);
+ snmp_mib_free((void __percpu **)net->mib.ip_statistics);
+ snmp_mib_free((void __percpu **)net->mib.tcp_statistics);
}

static __net_initdata struct pernet_operations ipv4_mib_ops = {
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index f25542c..1561eb6 100644
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -280,7 +280,7 @@ static void icmpmsg_put(struct seq_file *seq)

count = 0;
for (i = 0; i < ICMPMSG_MIB_MAX; i++) {
- val = snmp_fold_field((void **) net->mib.icmpmsg_statistics, i);
+ val = snmp_fold_field((void __percpu **) net->mib.icmpmsg_statistics, i);
if (val) {
type[count] = i;
vals[count++] = val;
@@ -307,18 +307,18 @@ static void icmp_put(struct seq_file *seq)
for (i=0; icmpmibmap[i].name != NULL; i++)
seq_printf(seq, " Out%s", icmpmibmap[i].name);
seq_printf(seq, "\nIcmp: %lu %lu",
- snmp_fold_field((void **) net->mib.icmp_statistics, ICMP_MIB_INMSGS),
- snmp_fold_field((void **) net->mib.icmp_statistics, ICMP_MIB_INERRORS));
+ snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_INMSGS),
+ snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_INERRORS));
for (i=0; icmpmibmap[i].name != NULL; i++)
seq_printf(seq, " %lu",
- snmp_fold_field((void **) net->mib.icmpmsg_statistics,
+ snmp_fold_field((void __percpu **) net->mib.icmpmsg_statistics,
icmpmibmap[i].index));
seq_printf(seq, " %lu %lu",
- snmp_fold_field((void **) net->mib.icmp_statistics, ICMP_MIB_OUTMSGS),
- snmp_fold_field((void **) net->mib.icmp_statistics, ICMP_MIB_OUTERRORS));
+ snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_OUTMSGS),
+ snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_OUTERRORS));
for (i=0; icmpmibmap[i].name != NULL; i++)
seq_printf(seq, " %lu",
- snmp_fold_field((void **) net->mib.icmpmsg_statistics,
+ snmp_fold_field((void __percpu **) net->mib.icmpmsg_statistics,
icmpmibmap[i].index | 0x100));
}

@@ -341,7 +341,7 @@ static int snmp_seq_show(struct seq_file *seq, void *v)

for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
seq_printf(seq, " %lu",
- snmp_fold_field((void **)net->mib.ip_statistics,
+ snmp_fold_field((void __percpu **)net->mib.ip_statistics,
snmp4_ipstats_list[i].entry));

icmp_put(seq); /* RFC 2011 compatibility */
@@ -356,11 +356,11 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
/* MaxConn field is signed, RFC 2012 */
if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN)
seq_printf(seq, " %ld",
- snmp_fold_field((void **)net->mib.tcp_statistics,
+ snmp_fold_field((void __percpu **)net->mib.tcp_statistics,
snmp4_tcp_list[i].entry));
else
seq_printf(seq, " %lu",
- snmp_fold_field((void **)net->mib.tcp_statistics,
+ snmp_fold_field((void __percpu **)net->mib.tcp_statistics,
snmp4_tcp_list[i].entry));
}

@@ -371,7 +371,7 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
seq_puts(seq, "\nUdp:");
for (i = 0; snmp4_udp_list[i].name != NULL; i++)
seq_printf(seq, " %lu",
- snmp_fold_field((void **)net->mib.udp_statistics,
+ snmp_fold_field((void __percpu **)net->mib.udp_statistics,
snmp4_udp_list[i].entry));

/* the UDP and UDP-Lite MIBs are the same */
@@ -382,7 +382,7 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
seq_puts(seq, "\nUdpLite:");
for (i = 0; snmp4_udp_list[i].name != NULL; i++)
seq_printf(seq, " %lu",
- snmp_fold_field((void **)net->mib.udplite_statistics,
+ snmp_fold_field((void __percpu **)net->mib.udplite_statistics,
snmp4_udp_list[i].entry));

seq_putc(seq, '\n');
@@ -419,7 +419,7 @@ static int netstat_seq_show(struct seq_file *seq, void *v)
seq_puts(seq, "\nTcpExt:");
for (i = 0; snmp4_net_list[i].name != NULL; i++)
seq_printf(seq, " %lu",
- snmp_fold_field((void **)net->mib.net_statistics,
+ snmp_fold_field((void __percpu **)net->mib.net_statistics,
snmp4_net_list[i].entry));

seq_puts(seq, "\nIpExt:");
@@ -429,7 +429,7 @@ static int netstat_seq_show(struct seq_file *seq, void *v)
seq_puts(seq, "\nIpExt:");
for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
seq_printf(seq, " %lu",
- snmp_fold_field((void **)net->mib.ip_statistics,
+ snmp_fold_field((void __percpu **)net->mib.ip_statistics,
snmp4_ipextstats_list[i].entry));

seq_putc(seq, '\n');
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index e446496..515d906 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -3327,7 +3327,7 @@ static __net_initdata struct pernet_operations rt_secret_timer_ops = {


#ifdef CONFIG_NET_CLS_ROUTE
-struct ip_rt_acct *ip_rt_acct __read_mostly;
+struct ip_rt_acct __percpu *ip_rt_acct __read_mostly;
#endif /* CONFIG_NET_CLS_ROUTE */

static __initdata unsigned long rhash_entries;
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index b0a26bb..bc04e66 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2788,10 +2788,10 @@ EXPORT_SYMBOL(tcp_gro_complete);

#ifdef CONFIG_TCP_MD5SIG
static unsigned long tcp_md5sig_users;
-static struct tcp_md5sig_pool **tcp_md5sig_pool;
+static struct tcp_md5sig_pool * __percpu *tcp_md5sig_pool;
static DEFINE_SPINLOCK(tcp_md5sig_pool_lock);

-static void __tcp_free_md5sig_pool(struct tcp_md5sig_pool **pool)
+static void __tcp_free_md5sig_pool(struct tcp_md5sig_pool * __percpu *pool)
{
int cpu;
for_each_possible_cpu(cpu) {
@@ -2808,7 +2808,7 @@ static void __tcp_free_md5sig_pool(struct tcp_md5sig_pool **pool)

void tcp_free_md5sig_pool(void)
{
- struct tcp_md5sig_pool **pool = NULL;
+ struct tcp_md5sig_pool * __percpu *pool = NULL;

spin_lock_bh(&tcp_md5sig_pool_lock);
if (--tcp_md5sig_users == 0) {
@@ -2822,10 +2822,11 @@ void tcp_free_md5sig_pool(void)

EXPORT_SYMBOL(tcp_free_md5sig_pool);

-static struct tcp_md5sig_pool **__tcp_alloc_md5sig_pool(struct sock *sk)
+static struct tcp_md5sig_pool * __percpu *
+__tcp_alloc_md5sig_pool(struct sock *sk)
{
int cpu;
- struct tcp_md5sig_pool **pool;
+ struct tcp_md5sig_pool * __percpu *pool;

pool = alloc_percpu(struct tcp_md5sig_pool *);
if (!pool)
@@ -2852,9 +2853,9 @@ out_free:
return NULL;
}

-struct tcp_md5sig_pool **tcp_alloc_md5sig_pool(struct sock *sk)
+struct tcp_md5sig_pool * __percpu *tcp_alloc_md5sig_pool(struct sock *sk)
{
- struct tcp_md5sig_pool **pool;
+ struct tcp_md5sig_pool * __percpu *pool;
int alloc = 0;

retry:
@@ -2873,7 +2874,9 @@ retry:

if (alloc) {
/* we cannot hold spinlock here because this may sleep. */
- struct tcp_md5sig_pool **p = __tcp_alloc_md5sig_pool(sk);
+ struct tcp_md5sig_pool * __percpu *p;
+
+ p = __tcp_alloc_md5sig_pool(sk);
spin_lock_bh(&tcp_md5sig_pool_lock);
if (!p) {
tcp_md5sig_users--;
@@ -2897,7 +2900,7 @@ EXPORT_SYMBOL(tcp_alloc_md5sig_pool);

struct tcp_md5sig_pool *__tcp_get_md5sig_pool(int cpu)
{
- struct tcp_md5sig_pool **p;
+ struct tcp_md5sig_pool * __percpu *p;
spin_lock_bh(&tcp_md5sig_pool_lock);
p = tcp_md5sig_pool;
if (p)
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index de7a194..1b5f2ed 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -278,31 +278,31 @@ static void addrconf_mod_timer(struct inet6_ifaddr *ifp,

static int snmp6_alloc_dev(struct inet6_dev *idev)
{
- if (snmp_mib_init((void **)idev->stats.ipv6,
+ if (snmp_mib_init((void __percpu **)idev->stats.ipv6,
sizeof(struct ipstats_mib)) < 0)
goto err_ip;
- if (snmp_mib_init((void **)idev->stats.icmpv6,
+ if (snmp_mib_init((void __percpu **)idev->stats.icmpv6,
sizeof(struct icmpv6_mib)) < 0)
goto err_icmp;
- if (snmp_mib_init((void **)idev->stats.icmpv6msg,
+ if (snmp_mib_init((void __percpu **)idev->stats.icmpv6msg,
sizeof(struct icmpv6msg_mib)) < 0)
goto err_icmpmsg;

return 0;

err_icmpmsg:
- snmp_mib_free((void **)idev->stats.icmpv6);
+ snmp_mib_free((void __percpu **)idev->stats.icmpv6);
err_icmp:
- snmp_mib_free((void **)idev->stats.ipv6);
+ snmp_mib_free((void __percpu **)idev->stats.ipv6);
err_ip:
return -ENOMEM;
}

static void snmp6_free_dev(struct inet6_dev *idev)
{
- snmp_mib_free((void **)idev->stats.icmpv6msg);
- snmp_mib_free((void **)idev->stats.icmpv6);
- snmp_mib_free((void **)idev->stats.ipv6);
+ snmp_mib_free((void __percpu **)idev->stats.icmpv6msg);
+ snmp_mib_free((void __percpu **)idev->stats.icmpv6);
+ snmp_mib_free((void __percpu **)idev->stats.ipv6);
}

/* Nobody refers to this device, we may destroy it. */
@@ -3752,8 +3752,8 @@ static inline size_t inet6_if_nlmsg_size(void)
);
}

-static inline void __snmp6_fill_stats(u64 *stats, void **mib, int items,
- int bytes)
+static inline void __snmp6_fill_stats(u64 *stats, void __percpu **mib,
+ int items, int bytes)
{
int i;
int pad = bytes - sizeof(u64) * items;
@@ -3772,10 +3772,10 @@ static void snmp6_fill_stats(u64 *stats, struct inet6_dev *idev, int attrtype,
{
switch(attrtype) {
case IFLA_INET6_STATS:
- __snmp6_fill_stats(stats, (void **)idev->stats.ipv6, IPSTATS_MIB_MAX, bytes);
+ __snmp6_fill_stats(stats, (void __percpu **)idev->stats.ipv6, IPSTATS_MIB_MAX, bytes);
break;
case IFLA_INET6_ICMP6STATS:
- __snmp6_fill_stats(stats, (void **)idev->stats.icmpv6, ICMP6_MIB_MAX, bytes);
+ __snmp6_fill_stats(stats, (void __percpu **)idev->stats.icmpv6, ICMP6_MIB_MAX, bytes);
break;
}
}
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 12e69d3..36b42af 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -971,41 +971,41 @@ static void ipv6_packet_cleanup(void)

static int __net_init ipv6_init_mibs(struct net *net)
{
- if (snmp_mib_init((void **)net->mib.udp_stats_in6,
+ if (snmp_mib_init((void __percpu **)net->mib.udp_stats_in6,
sizeof (struct udp_mib)) < 0)
return -ENOMEM;
- if (snmp_mib_init((void **)net->mib.udplite_stats_in6,
+ if (snmp_mib_init((void __percpu **)net->mib.udplite_stats_in6,
sizeof (struct udp_mib)) < 0)
goto err_udplite_mib;
- if (snmp_mib_init((void **)net->mib.ipv6_statistics,
+ if (snmp_mib_init((void __percpu **)net->mib.ipv6_statistics,
sizeof(struct ipstats_mib)) < 0)
goto err_ip_mib;
- if (snmp_mib_init((void **)net->mib.icmpv6_statistics,
+ if (snmp_mib_init((void __percpu **)net->mib.icmpv6_statistics,
sizeof(struct icmpv6_mib)) < 0)
goto err_icmp_mib;
- if (snmp_mib_init((void **)net->mib.icmpv6msg_statistics,
+ if (snmp_mib_init((void __percpu **)net->mib.icmpv6msg_statistics,
sizeof(struct icmpv6msg_mib)) < 0)
goto err_icmpmsg_mib;
return 0;

err_icmpmsg_mib:
- snmp_mib_free((void **)net->mib.icmpv6_statistics);
+ snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics);
err_icmp_mib:
- snmp_mib_free((void **)net->mib.ipv6_statistics);
+ snmp_mib_free((void __percpu **)net->mib.ipv6_statistics);
err_ip_mib:
- snmp_mib_free((void **)net->mib.udplite_stats_in6);
+ snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6);
err_udplite_mib:
- snmp_mib_free((void **)net->mib.udp_stats_in6);
+ snmp_mib_free((void __percpu **)net->mib.udp_stats_in6);
return -ENOMEM;
}

static void __net_exit ipv6_cleanup_mibs(struct net *net)
{
- snmp_mib_free((void **)net->mib.udp_stats_in6);
- snmp_mib_free((void **)net->mib.udplite_stats_in6);
- snmp_mib_free((void **)net->mib.ipv6_statistics);
- snmp_mib_free((void **)net->mib.icmpv6_statistics);
- snmp_mib_free((void **)net->mib.icmpv6msg_statistics);
+ snmp_mib_free((void __percpu **)net->mib.udp_stats_in6);
+ snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6);
+ snmp_mib_free((void __percpu **)net->mib.ipv6_statistics);
+ snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics);
+ snmp_mib_free((void __percpu **)net->mib.icmpv6msg_statistics);
}

static int __net_init inet6_net_init(struct net *net)
diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c
index c9605c3..e3744d1 100644
--- a/net/ipv6/proc.c
+++ b/net/ipv6/proc.c
@@ -136,7 +136,7 @@ static struct snmp_mib snmp6_udplite6_list[] = {
SNMP_MIB_SENTINEL
};

-static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void **mib)
+static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void __percpu **mib)
{
char name[32];
int i;
@@ -171,7 +171,8 @@ static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void **mib)
}

static inline void
-snmp6_seq_show_item(struct seq_file *seq, void **mib, struct snmp_mib *itemlist)
+snmp6_seq_show_item(struct seq_file *seq, void __percpu **mib,
+ struct snmp_mib *itemlist)
{
int i;
for (i=0; itemlist[i].name; i++)
@@ -183,14 +184,15 @@ static int snmp6_seq_show(struct seq_file *seq, void *v)
{
struct net *net = (struct net *)seq->private;

- snmp6_seq_show_item(seq, (void **)net->mib.ipv6_statistics,
+ snmp6_seq_show_item(seq, (void __percpu **)net->mib.ipv6_statistics,
snmp6_ipstats_list);
- snmp6_seq_show_item(seq, (void **)net->mib.icmpv6_statistics,
+ snmp6_seq_show_item(seq, (void __percpu **)net->mib.icmpv6_statistics,
snmp6_icmp6_list);
- snmp6_seq_show_icmpv6msg(seq, (void **)net->mib.icmpv6msg_statistics);
- snmp6_seq_show_item(seq, (void **)net->mib.udp_stats_in6,
+ snmp6_seq_show_icmpv6msg(seq,
+ (void __percpu **)net->mib.icmpv6msg_statistics);
+ snmp6_seq_show_item(seq, (void __percpu **)net->mib.udp_stats_in6,
snmp6_udp6_list);
- snmp6_seq_show_item(seq, (void **)net->mib.udplite_stats_in6,
+ snmp6_seq_show_item(seq, (void __percpu **)net->mib.udplite_stats_in6,
snmp6_udplite6_list);
return 0;
}
@@ -213,9 +215,11 @@ static int snmp6_dev_seq_show(struct seq_file *seq, void *v)
struct inet6_dev *idev = (struct inet6_dev *)seq->private;

seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
- snmp6_seq_show_item(seq, (void **)idev->stats.ipv6, snmp6_ipstats_list);
- snmp6_seq_show_item(seq, (void **)idev->stats.icmpv6, snmp6_icmp6_list);
- snmp6_seq_show_icmpv6msg(seq, (void **)idev->stats.icmpv6msg);
+ snmp6_seq_show_item(seq, (void __percpu **)idev->stats.ipv6,
+ snmp6_ipstats_list);
+ snmp6_seq_show_item(seq, (void __percpu **)idev->stats.icmpv6,
+ snmp6_icmp6_list);
+ snmp6_seq_show_icmpv6msg(seq, (void __percpu **)idev->stats.icmpv6msg);
return 0;
}

diff --git a/net/sctp/proc.c b/net/sctp/proc.c
index d093cbf..e1e04c6 100644
--- a/net/sctp/proc.c
+++ b/net/sctp/proc.c
@@ -83,7 +83,7 @@ static int sctp_snmp_seq_show(struct seq_file *seq, void *v)

for (i = 0; sctp_snmp_list[i].name != NULL; i++)
seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
- snmp_fold_field((void **)sctp_statistics,
+ snmp_fold_field((void __percpu **)sctp_statistics,
sctp_snmp_list[i].entry));

return 0;
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index a3c8988..9687177 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -996,12 +996,13 @@ int sctp_register_pf(struct sctp_pf *pf, sa_family_t family)

static inline int init_sctp_mibs(void)
{
- return snmp_mib_init((void**)sctp_statistics, sizeof(struct sctp_mib));
+ return snmp_mib_init((void __percpu **)sctp_statistics,
+ sizeof(struct sctp_mib));
}

static inline void cleanup_sctp_mibs(void)
{
- snmp_mib_free((void**)sctp_statistics);
+ snmp_mib_free((void __percpu **)sctp_statistics);
}

static void sctp_v4_pf_init(void)
diff --git a/net/xfrm/xfrm_ipcomp.c b/net/xfrm/xfrm_ipcomp.c
index 42cd183..0fc5ff6 100644
--- a/net/xfrm/xfrm_ipcomp.c
+++ b/net/xfrm/xfrm_ipcomp.c
@@ -30,12 +30,12 @@

struct ipcomp_tfms {
struct list_head list;
- struct crypto_comp **tfms;
+ struct crypto_comp * __percpu *tfms;
int users;
};

static DEFINE_MUTEX(ipcomp_resource_mutex);
-static void **ipcomp_scratches;
+static void * __percpu *ipcomp_scratches;
static int ipcomp_scratch_users;
static LIST_HEAD(ipcomp_tfms_list);

@@ -200,7 +200,7 @@ EXPORT_SYMBOL_GPL(ipcomp_output);
static void ipcomp_free_scratches(void)
{
int i;
- void **scratches;
+ void * __percpu *scratches;

if (--ipcomp_scratch_users)
return;
@@ -215,10 +215,10 @@ static void ipcomp_free_scratches(void)
free_percpu(scratches);
}

-static void **ipcomp_alloc_scratches(void)
+static void * __percpu *ipcomp_alloc_scratches(void)
{
int i;
- void **scratches;
+ void * __percpu *scratches;

if (ipcomp_scratch_users++)
return ipcomp_scratches;
@@ -239,7 +239,7 @@ static void **ipcomp_alloc_scratches(void)
return scratches;
}

-static void ipcomp_free_tfms(struct crypto_comp **tfms)
+static void ipcomp_free_tfms(struct crypto_comp * __percpu *tfms)
{
struct ipcomp_tfms *pos;
int cpu;
@@ -267,10 +267,10 @@ static void ipcomp_free_tfms(struct crypto_comp **tfms)
free_percpu(tfms);
}

-static struct crypto_comp **ipcomp_alloc_tfms(const char *alg_name)
+static struct crypto_comp * __percpu *ipcomp_alloc_tfms(const char *alg_name)
{
struct ipcomp_tfms *pos;
- struct crypto_comp **tfms;
+ struct crypto_comp * __percpu *tfms;
int cpu;

/* This can be any valid CPU ID so we don't need locking. */
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 4725a54..a8c3ced 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -2369,19 +2369,19 @@ static int __net_init xfrm_statistics_init(struct net *net)
{
int rv;

- if (snmp_mib_init((void **)net->mib.xfrm_statistics,
+ if (snmp_mib_init((void __percpu **)net->mib.xfrm_statistics,
sizeof(struct linux_xfrm_mib)) < 0)
return -ENOMEM;
rv = xfrm_proc_init(net);
if (rv < 0)
- snmp_mib_free((void **)net->mib.xfrm_statistics);
+ snmp_mib_free((void __percpu **)net->mib.xfrm_statistics);
return rv;
}

static void xfrm_statistics_fini(struct net *net)
{
xfrm_proc_fini(net);
- snmp_mib_free((void **)net->mib.xfrm_statistics);
+ snmp_mib_free((void __percpu **)net->mib.xfrm_statistics);
}
#else
static int __net_init xfrm_statistics_init(struct net *net)
diff --git a/net/xfrm/xfrm_proc.c b/net/xfrm/xfrm_proc.c
index fef8db5..54ad2a8 100644
--- a/net/xfrm/xfrm_proc.c
+++ b/net/xfrm/xfrm_proc.c
@@ -50,7 +50,8 @@ static int xfrm_statistics_seq_show(struct seq_file *seq, void *v)
int i;
for (i=0; xfrm_mib_list[i].name; i++)
seq_printf(seq, "%-24s\t%lu\n", xfrm_mib_list[i].name,
- snmp_fold_field((void **)net->mib.xfrm_statistics,
+ snmp_fold_field((void __percpu **)
+ net->mib.xfrm_statistics,
xfrm_mib_list[i].entry));
return 0;
}
--
1.6.4.2


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