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Message-Id: <201001170801.12721.rusty@rustcorp.com.au> Date: Sun, 17 Jan 2010 08:01:12 +1030 From: Rusty Russell <rusty@...tcorp.com.au> To: Shirley Ma <mashirle@...ibm.com> Cc: "Michael S. Tsirkin" <mst@...hat.com>, Amit Shah <amit.shah@...hat.com>, Avi Kivity <avi@...hat.com>, netdev@...r.kernel.org, kvm@...r.kernel.org Subject: Re: [PATCH v2 2/2] virtio_net: Defer skb allocation in receive path On Thu, 14 Jan 2010 07:23:38 am Shirley Ma wrote: > virtio_net receives packets from its pre-allocated vring buffers, then it > delivers these packets to upper layer protocols as skb buffs. So it's not > necessary to pre-allocate skb for each mergable buffer, then frees extra > skbs when buffers are merged into a large packet. This patch has deferred > skb allocation in receiving packets for both big packets and mergeable buffers > to reduce skb pre-allocations and skb frees. It frees unused buffers by calling > detach_unused_buf in vring, so recv skb queue is not needed. > > Signed-off-by: Shirley Ma <xma@...ibm.com> Thanks, applied! After testing I'll send it to DaveM. Rusty. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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