From: Alexander Duyck <alexander.h.duyck@intel.com>
Date: Tue, 13 Nov 2012 04:03:24 +0000 (+0000)
Subject: igb: Improve performance and reduce size of igb_tx_map
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~45^2~368
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=80d0759e5e714cb738c50d32edf3364b713453ff;p=pandora-kernel.git

igb: Improve performance and reduce size of igb_tx_map

This change is meant to both improve the performance and reduce the size of
igb_tx_map.  To do this I have expanded the work done in the main loop by
pushing first into tx_buffer.  This allows us to pull in the dma_mapping_error
check, the tx_buffer value assignment, and the initial DMA value assignment to
the Tx descriptor.  The net result is that the function reduces in size by a
little over a 100 bytes and is about 1% or 2% faster.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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