tree adcccd4b9c015d0d81fbce1928c135b269ac1d26
parent 4447957a825031b3faf3b5bc2013afe35eff492b
author Tom Herbert <therbert@google.com> 1273068147 +0000
committer David S. Miller <davem@davemloft.net> 1273119085 -0700

e1000e: save skb counts in TX to avoid cache misses

In e1000_tx_map, precompute number of segements and bytecounts which
are derived from fields in skb; these are stored in buffer_info.  When
cleaning tx in e1000_clean_tx_irq use the values in the associated
buffer_info for statistics counting, this eliminates cache misses
on skb fields.

Signed-off-by: Tom Herbert <therbert@google.com>
Acked-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>