diff options
| author | Eric Dumazet <edumazet@google.com> | 2018-09-13 17:58:49 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-19 23:43:46 +0300 |
| commit | 8291cd943a9b4e2d764a4a294999bbb2f94f153c (patch) | |
| tree | 9cafd2b88fbe5740a27096c65dbaf1f003bde583 /include | |
| parent | bd946fb5226e205530bea2581d867642e4b457ed (diff) | |
| download | linux-8291cd943a9b4e2d764a4a294999bbb2f94f153c.tar.xz | |
inet: frags: reorganize struct netns_frags
Put the read-mostly fields in a separate cache line
at the beginning of struct netns_frags, to reduce
false sharing noticed in inet_frag_kill()
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit c2615cf5a761b32bf74e85bddc223dfff3d9b9f0)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/inet_frag.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h index a52e7273e7a5..ed07e3786d98 100644 --- a/include/net/inet_frag.h +++ b/include/net/inet_frag.h @@ -5,16 +5,17 @@ #include <linux/rhashtable.h> struct netns_frags { - struct rhashtable rhashtable ____cacheline_aligned_in_smp; - - /* Keep atomic mem on separate cachelines in structs that include it */ - atomic_long_t mem ____cacheline_aligned_in_smp; /* sysctls */ long high_thresh; long low_thresh; int timeout; int max_dist; struct inet_frags *f; + + struct rhashtable rhashtable ____cacheline_aligned_in_smp; + + /* Keep atomic mem on separate cachelines in structs that include it */ + atomic_long_t mem ____cacheline_aligned_in_smp; }; /** |