Messages in this thread | | | Date | Wed, 08 Nov 2006 14:38:02 -0700 | From | "Jeff V. Merkey" <> | Subject | e1000 driver 2.6.18 - how to waste processor cycles |
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Is there a good reason the skb refill routine in e1000_alloc_rx_buffers needs to go and touch and remap skb memory on already loaded descriptors/ This seems extremely wasteful of processor cycles when refilling the ring buffer.
I note that the archtiecture has changed and is recycling buffers from the rx_irq routine and when the routine is called to refill the ring buffers, a lot of wasteful and needless calls for map_skb is occurring.
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