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authorDenis V. Lunev <den@openvz.org>2008-02-29 11:17:11 -0800
committerDavid S. Miller <davem@davemloft.net>2008-02-29 11:17:11 -0800
commit79c911595390c8fdc8d8a487ac1951d854b1cd09 (patch)
tree9688e154b321f6c976b2d43abbfd4bb929b18e1a /net/ipv6/icmp.c
parent405666db84b984b68fc75794069f424c02e5796c (diff)
downloadop-kernel-dev-79c911595390c8fdc8d8a487ac1951d854b1cd09.zip
op-kernel-dev-79c911595390c8fdc8d8a487ac1951d854b1cd09.tar.gz
[ICMP]: Allocate data for __icmp(v6)_sk dynamically.
Own __icmp(v6)_sk should be present in each namespace. So, it should be allocated dynamically. Though, alloc_percpu does not fit the case as it implies additional dereferrence for no bonus. Allocate data for pointers just like __percpu_alloc_mask does and place pointers to struct sock into this array. Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/icmp.c')
-rw-r--r--net/ipv6/icmp.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index 18f220a..3368f32 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -80,8 +80,8 @@ EXPORT_SYMBOL(icmpv6msg_statistics);
*
* On SMP we have one ICMP socket per-cpu.
*/
-static DEFINE_PER_CPU(struct sock *, __icmpv6_sk) = NULL;
-#define icmpv6_sk __get_cpu_var(__icmpv6_sk)
+static struct sock **__icmpv6_sk = NULL;
+#define icmpv6_sk (__icmpv6_sk[smp_processor_id()])
static int icmpv6_rcv(struct sk_buff *skb);
@@ -785,6 +785,10 @@ int __init icmpv6_init(void)
struct sock *sk;
int err, i, j;
+ __icmpv6_sk = kzalloc(nr_cpu_ids * sizeof(struct sock *), GFP_KERNEL);
+ if (__icmpv6_sk == NULL)
+ return -ENOMEM;
+
for_each_possible_cpu(i) {
struct socket *sock;
err = sock_create_kern(PF_INET6, SOCK_RAW, IPPROTO_ICMPV6,
@@ -797,7 +801,7 @@ int __init icmpv6_init(void)
goto fail;
}
- per_cpu(__icmpv6_sk, i) = sk = sock->sk;
+ __icmpv6_sk[i] = sk = sock->sk;
sk->sk_allocation = GFP_ATOMIC;
/*
* Split off their lock-class, because sk->sk_dst_lock
@@ -830,7 +834,7 @@ int __init icmpv6_init(void)
for (j = 0; j < i; j++) {
if (!cpu_possible(j))
continue;
- sock_release(per_cpu(__icmpv6_sk, j)->sk_socket);
+ sock_release(__icmpv6_sk[j]->sk_socket);
}
return err;
@@ -841,7 +845,7 @@ void icmpv6_cleanup(void)
int i;
for_each_possible_cpu(i) {
- sock_release(per_cpu(__icmpv6_sk, i)->sk_socket);
+ sock_release(__icmpv6_sk[i]->sk_socket);
}
inet6_del_protocol(&icmpv6_protocol, IPPROTO_ICMPV6);
}
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