From 7d720c3e4f0c4fc152a6bf17e24244a3c85412d2 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 16 Feb 2010 15:20:26 +0000 Subject: 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 Acked-by: David S. Miller Cc: Patrick McHardy Cc: Arnaldo Carvalho de Melo Cc: Vlad Yasevich Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller --- net/ipv6/proc.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) (limited to 'net/ipv6/proc.c') diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c index bfe2598dd563..58344c0fbd13 100644 --- a/net/ipv6/proc.c +++ b/net/ipv6/proc.c @@ -136,7 +136,7 @@ static const 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; @@ -170,7 +170,7 @@ static void snmp6_seq_show_icmpv6msg(struct seq_file *seq, void **mib) return; } -static void snmp6_seq_show_item(struct seq_file *seq, void **mib, +static void snmp6_seq_show_item(struct seq_file *seq, void __percpu **mib, const struct snmp_mib *itemlist) { int i; @@ -183,14 +183,15 @@ 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 +214,11 @@ 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; } -- cgit v1.2.3-59-g8ed1b