diff options
| author | Eric Dumazet <edumazet@google.com> | 2012-08-24 05:40:47 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-08-24 11:47:48 -0400 |
| commit | 78df76a065ae3b5dbcb9a29912adc02f697de498 (patch) | |
| tree | 5b9ab36790a2e0101a15d70bdf41b066ce0e55aa /lib/checksum.c | |
| parent | a0dfb2634e5671770f598cda08002d8cda66ac77 (diff) | |
ipv4: take rt_uncached_lock only if needed
Multicast traffic allocates dst with DST_NOCACHE, but dst is
not inserted into rt_uncached_list.
This slowdown multicast workloads on SMP because rt_uncached_lock is
contended.
Change the test before taking the lock to actually check the dst
was inserted into rt_uncached_list.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'lib/checksum.c')
0 files changed, 0 insertions, 0 deletions