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| 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.h | |
| 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.h')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h index 4dd3e26129b4..ca07a7b7642e 100644 --- a/drivers/net/ethernet/intel/i40e/i40e.h +++ b/drivers/net/ethernet/intel/i40e/i40e.h @@ -487,6 +487,7 @@ struct i40e_vsi { u32 tx_restart; u32 tx_busy; u64 tx_linearize; + u64 tx_force_wb; u32 rx_buf_failed; u32 rx_page_failed; |