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Some qdisc like cake, codel, fq_codel might drop packets in their dequeue() method. This is currently problematic because dequeue() runs with the qdisc spinlock held. Freeing skbs can be extremely expensive. Add qdisc_dequeue_drop() method and a new TCQ_F_DEQUEUE_DROPS so that these qdiscs can opt-in to defer the skb frees after the socket spinlock is released. TCQ_F_DEQUEUE_DROPS is an attempt to not penalize other qdiscs with an extra cache line miss. Signed-off-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20251121083256.674562-14-edumazet@google.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
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| clocksource | ||
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