ixgbe: Drop Rx alloc at end of Rx cleanup

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This change removes the Rx buffer allocation at the end of ixgbe_clean_rx_irq.
The reason for removing this is to avoid the extra latency introduced by the
MMIO write.  This can amount to somewhere around an extra 100ns of latency and
one extra message worth of PCIe bus overhead.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

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Alexander Duyck 2014-07-26 02:42:39 +00:00 • committed by Jeff Kirsher

parent db99d95c90

commit 15be71c92f

1 changed files with 0 additions and 3 deletions

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drivers/net/ethernet/intel/ixgbe/ixgbe_main.c

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