igb: defeature tx head writeback

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This patch removes tx head writeback as it was found to not provide a
significant improvement in tx performance and on some systems has been seen
to cause a performance degredation due to partial cache line writes.

Signed-off-by: Alexander Duyck <alexander.h.duyck@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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Alexander Duyck 2008-12-26 01:33:18 -08:00 • committed by David S. Miller

parent f2712fd0b4

commit 0e014cb162

3 changed files with 39 additions and 52 deletions

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1

drivers/net/igb/e1000_defines.h

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5

drivers/net/igb/igb.h

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83

drivers/net/igb/igb_main.c

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