diff options
| author | Anjali Singhai Jain <anjali.singhai@intel.com> | 2015-10-21 19:47:08 -0400 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-11-25 10:05:56 -0800 |
| commit | 164c9f54631beca4d174f306acdcaec2bdeef52e (patch) | |
| tree | 630dd432f6b8f8781fe25e2f0b5822e9bd2d124f /drivers/net/ethernet/intel/i40e/i40e_ethtool.c | |
| parent | 4f2f017c6101ab2ba202d6059c238c15577ad38b (diff) | |
| download | lwn-164c9f54631beca4d174f306acdcaec2bdeef52e.tar.gz lwn-164c9f54631beca4d174f306acdcaec2bdeef52e.zip | |
i40e/i40evf: Add a stat to track how many times we have to do a force WB
When in NAPI with interrupts disabled, the HW needs to be forced to do a
write back on TX if the number of descriptors pending are less than a
cache line.
This stat helps keep track of how many times we get into this situation.
Change-ID: I76c1bcc7ebccd6bffcc5aa33bfe05f2fa1c9a984
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c index 3f385ffe420f..eeb1af4885b2 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c +++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c @@ -88,6 +88,7 @@ static const struct i40e_stats i40e_gstrings_misc_stats[] = { I40E_VSI_STAT("tx_broadcast", eth_stats.tx_broadcast), I40E_VSI_STAT("rx_unknown_protocol", eth_stats.rx_unknown_protocol), I40E_VSI_STAT("tx_linearize", tx_linearize), + I40E_VSI_STAT("tx_force_wb", tx_force_wb), }; /* These PF_STATs might look like duplicates of some NETDEV_STATs, |