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| author |   Jesse Brandeburg <jesse.brandeburg@intel.com> | 2015-02-27 09:15:31 +0000 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-03-07 07:01:05 -0800 |
| commit | 016890b99482745646de091d795384efd83f5d20 (patch) | |
| tree | ed5537eb7fb4ec0b59491ae48fca1c92e0a526ae /drivers/net/ethernet/intel/i40evf/i40e_txrx.c | |
| parent | i40e: Simplify code for rss_size_max config (diff) | |
| download | linux-dev-016890b99482745646de091d795384efd83f5d20.tar.xz linux-dev-016890b99482745646de091d795384efd83f5d20.zip | |
i40e/i40evf: enable prefetch of Tx descriptors during cleanup
Performance can be improved a bit by imitating ixgbe and using
prefetch to get us the next Tx descriptor.
Change-ID: Ice7ffd4cd0ce87c35295059bdb7972a7f53723aa
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/intel/i40evf/i40e_txrx.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c index 1c2637b28728..d9f3db542c5f 100644 --- a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c @@ -289,6 +289,8 @@ static bool i40e_clean_tx_irq(struct i40e_ring *tx_ring, int budget) tx_desc = I40E_TX_DESC(tx_ring, 0); } + prefetch(tx_desc); + /* update budget accounting */ budget--; } while (likely(budget)); |