netdev - [PATCH net-next v4 0/2] optimise local CPU skb_attempt_defer

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Message-ID: <cover.1712711977.git.asml.silence@gmail.com>
Date: Wed, 10 Apr 2024 02:28:08 +0100
From: Pavel Begunkov <asml.silence@...il.com>
To: netdev@...r.kernel.org
Cc: edumazet@...gle.com,
	davem@...emloft.net,
	dsahern@...nel.org,
	pabeni@...hat.com,
	kuba@...nel.org,
	Pavel Begunkov <asml.silence@...il.com>
Subject: [PATCH net-next v4 0/2] optimise local CPU skb_attempt_defer_free

Optimise the case when an skb comes to skb_attempt_defer_free()
on the same CPU it was allocated on. The patch 1 enables skb caches
and gives frags a chance to hit the page pool's fast path.
CPU bound benchmarking with perfect skb_attempt_defer_free()
gives around 1% of extra throughput.

v4: SKB_DROP_REASON_NOT_SPECIFIED -> SKB_CONSUMED
v3: rebased, no changes otherwise
v2: pass @napi_safe=true by using __napi_kfree_skb()

Pavel Begunkov (2):
  net: cache for same cpu skb_attempt_defer_free
  net: use SKB_CONSUMED in skb_attempt_defer_free()

 net/core/skbuff.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

-- 
2.44.0