Eric Dumazet says:
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net: lockless skb_attempt_defer_free()
Platforms with many cpus and relatively slow inter connect show
a significant spinlock contention in skb_attempt_defer_free().
This series refactors this infrastructure to be NUMA aware,
and lockless.
Tested on various platforms, including AMD Zen 2/3/4
and Intel Granite Rapids, showing significant cost reductions
under network stress (more than 20 Mpps).
====================
Link: https://patch.msgid.link/20250928084934.3266948-1-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>