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| author | Tejun Heo <tj@kernel.org> | 2010-02-16 15:20:26 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-02-16 23:05:38 -0800 |
| commit | 7d720c3e4f0c4fc152a6bf17e24244a3c85412d2 (patch) | |
| tree | 36e037187ce79acb211702bea22e99c625787757 /net/ipv6/addrconf.c | |
| parent | 2bb4646fce8d09916b351d1a62f98db7cec6fc41 (diff) | |
| download | linux-7d720c3e4f0c4fc152a6bf17e24244a3c85412d2.tar.gz linux-7d720c3e4f0c4fc152a6bf17e24244a3c85412d2.tar.bz2 linux-7d720c3e4f0c4fc152a6bf17e24244a3c85412d2.zip | |
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>
Diffstat (limited to 'net/ipv6/addrconf.c')
| -rw-r--r-- | net/ipv6/addrconf.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index c79cbff54370..b0d4a4b23db5 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. */ @@ -3766,8 +3766,8 @@ 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; @@ -3786,10 +3786,10 @@ 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; } } |