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| author | Eric Dumazet <edumazet@google.com> | 2025-08-26 15:50:29 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-08-28 14:14:50 +0300 |
| commit | c51613fa276f038bdd18656a57a90ccc5d4e5200 (patch) | |
| tree | 114a352c439984a17a8c3c44538cfa57a11f3575 /tools/perf/scripts/python | |
| parent | cb4d5a6eb600a43c2e3ec7f54e06d07aa33d8062 (diff) | |
| download | linux-c51613fa276f038bdd18656a57a90ccc5d4e5200.tar.xz | |
net: add sk->sk_drop_counters
Some sockets suffer from heavy false sharing on sk->sk_drops,
and fields in the same cache line.
Add sk->sk_drop_counters to:
- move the drop counter(s) to dedicated cache lines.
- Add basic NUMA awareness to these drop counter(s).
Following patches will use this infrastructure for UDP and RAW sockets.
sk_clone_lock() is not yet ready, it would need to properly
set newsk->sk_drop_counters if we plan to use this for TCP sockets.
v2: used Paolo suggestion from https://lore.kernel.org/netdev/8f09830a-d83d-43c9-b36b-88ba0a23e9b2@redhat.com/
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20250826125031.1578842-4-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions