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authorEric Dumazet <dada1@cosmosbay.com>2007-11-16 03:32:10 -0800
committerDavid S. Miller <davem@davemloft.net>2008-01-28 14:54:08 -0800
commit8dbde28d9711475adfe0e9c88505e38743cdc2a7 (patch)
tree0f41aade985a5626ece9c2007fde14c1ced2a065 /net/ipv4/ip_input.c
parent68f8353b480e5f2e136c38a511abdbb88eaa8ce2 (diff)
downloadlinux-8dbde28d9711475adfe0e9c88505e38743cdc2a7.tar.bz2
[NET]: NET_CLS_ROUTE : convert ip_rt_acct to per_cpu variables
ip_rt_acct needs 4096 bytes per cpu to perform some accounting. It is actually allocated as a single huge array [4096*NR_CPUS] (rounded up to a power of two) Converting it to a per cpu variable is wanted to : - Save space on machines were num_possible_cpus() < NR_CPUS - Better NUMA placement (each cpu gets memory on its node) Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ip_input.c')
-rw-r--r--net/ipv4/ip_input.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index 5b8a7603e606..4068e178d747 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -347,7 +347,7 @@ static int ip_rcv_finish(struct sk_buff *skb)
#ifdef CONFIG_NET_CLS_ROUTE
if (unlikely(skb->dst->tclassid)) {
- struct ip_rt_acct *st = ip_rt_acct + 256*smp_processor_id();
+ struct ip_rt_acct *st = per_cpu_ptr(ip_rt_acct, smp_processor_id());
u32 idx = skb->dst->tclassid;
st[idx&0xFF].o_packets++;
st[idx&0xFF].o_bytes+=skb->len;