On 10/25/23 16:59, Ivan Vecera wrote:
Removed fields:
.fc_autoneg_status
     Since commit c56999f94876 ("i40e/i40evf: Add set_fc and init of
     FC settings") write-only and otherwise unused
.eeprom_version
     Write-only and otherwise unused
.atr_sample_rate
     Has only one possible value (I40E_DEFAULT_ATR_SAMPLE_RATE). Remove
     it and replace its occurrences by I40E_DEFAULT_ATR_SAMPLE_RATE
.adminq_work_limit
     Has only one possible value (I40E_AQ_WORK_LIMIT). Remove it and
     replace its occurrences by I40E_AQ_WORK_LIMIT
.tx_sluggish_count
     Unused, never written
.pf_seid
     Used to store VSI downlink seid and it is referenced only once
     in the same codepath. There is no need to save it into i40e_pf.
     Remove it and use downlink_seid directly in the mentioned log
     message.
.instance
     Write only. Remove it as well as ugly static local variable
     'pfs_found' in i40e_probe.
.int_policy
.switch_kobj
.ptp_pps_work
.ptp_extts1_work
.ptp_pps_start
.pps_delay
.ptp_pin
.override_q_count
     All these unused at all

Prior the patch:
pahole -Ci40e_pf drivers/net/ethernet/intel/i40e/i40e.ko | tail -5
         /* size: 5368, cachelines: 84, members: 127 */
         /* sum members: 5297, holes: 20, sum holes: 71 */
         /* paddings: 6, sum paddings: 19 */
         /* last cacheline: 56 bytes */
};

After the patch:
pahole -Ci40e_pf drivers/net/ethernet/intel/i40e/i40e.ko | tail -5
         /* size: 4976, cachelines: 78, members: 112 */
         /* sum members: 4905, holes: 17, sum holes: 71 */
         /* paddings: 6, sum paddings: 19 */
         /* last cacheline: 48 bytes */
};

Signed-off-by: Ivan Vecera <[email protected]>
---
  drivers/net/ethernet/intel/i40e/i40e.h         | 16 ----------------
  drivers/net/ethernet/intel/i40e/i40e_debugfs.c |  3 ---
  drivers/net/ethernet/intel/i40e/i40e_main.c    | 18 ++++--------------
  3 files changed, 4 insertions(+), 33 deletions(-)


[...]

@@ -12831,7 +12830,6 @@ static int i40e_sw_init(struct i40e_pf *pf)
                                        I40E_MAX_VF_COUNT);
        }
  #endif /* CONFIG_PCI_IOV */
-       pf->eeprom_version = 0xDEAD;

haha, dead indeed!

[...]

Reviewed-by: Przemek Kitszel <[email protected]>

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