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| author | Eric Dumazet <edumazet@google.com> | 2015-05-01 10:37:49 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-05-01 19:44:00 -0400 |
| commit | 355b590ca24a53f5e2f6999218b5321eaf730a7e (patch) | |
| tree | e6a48af10ed15aca0c6d6a34533aef5636714c1c /net/ipv6 | |
| parent | 9dd3c797496affd699805c8a9d8429ad318c892f (diff) | |
| download | linux-355b590ca24a53f5e2f6999218b5321eaf730a7e.tar.bz2 | |
ipv4: speedup ip_idents_reserve()
Under stress, ip_idents_reserve() is accessing a contended
cache line twice, with non optimal MESI transactions.
If we place timestamps in separate location, we reduce this
pressure by ~50% and allow atomic_add_return() to issue
a Request for Ownership.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
0 files changed, 0 insertions, 0 deletions