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net: better pcpu data alignment

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Tunnels can force an alignment of their percpu data to reduce number of
cache lines used in fast path, or read in .ndo_get_stats()

percpu_alloc() is a very fine grained allocator, so any small hole will
be used anyway.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2011-11-04 23:19:28 +00:00
committed by David S. Miller
parent 2bc8ca40f9
commit 8ce120f118
5 changed files with 5 additions and 5 deletions
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2
net/ipv6/ip6_tunnel.c
View File

@@ -93,7 +93,7 @@ struct pcpu_tstats {
unsigned long rx_bytes;
unsigned long tx_packets;
unsigned long tx_bytes;
};
} __attribute__((aligned(4*sizeof(unsigned long))));
static struct net_device_stats *ip6_get_stats(struct net_device *dev)
{

2
net/ipv6/sit.c
View File

@@ -91,7 +91,7 @@ struct pcpu_tstats {
unsigned long rx_bytes;
unsigned long tx_packets;
unsigned long tx_bytes;
};
} __attribute__((aligned(4*sizeof(unsigned long))));
static struct net_device_stats *ipip6_get_stats(struct net_device *dev)
{