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authorEric Dumazet <eric.dumazet@gmail.com>2011-05-19 01:14:23 +0000
committerDavid S. Miller <davem@davemloft.net>2011-05-19 16:21:22 -0400
commitbe281e554e2a4cf2478df7a8b8926c89454bccfa (patch)
tree7e80e5eb0aa76efcdb39a06413ff9e0ae73de35a /net/sctp
parent75e308c894c4a5e47c005b8e821ae5f539ad2ef3 (diff)
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op-kernel-dev-be281e554e2a4cf2478df7a8b8926c89454bccfa.tar.gz
ipv6: reduce per device ICMP mib sizes
ipv6 has per device ICMP SNMP counters, taking too much space because they use percpu storage. needed size per device is : (512+4)*sizeof(long)*number_of_possible_cpus*2 On a 32bit kernel, 16 possible cpus, this wastes more than 64kbytes of memory per ipv6 enabled network device, taken in vmalloc pool. Since ICMP messages are rare, just use shared counters (atomic_long_t) Per network space ICMP counters are still using percpu memory, we might also convert them to shared counters in a future patch. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Denys Fedoryshchenko <denys@visp.net.lb> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp')
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