leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

e1000e: Alert the user that C-states will be disabled by enabling jumbo frames

Browse Source 
I personally spent a long time trying to decypher why my CPU would not
reach deeper C-states. Let's just tell the next user what's going on.

Signed-off-by: Matt Turner <matt.turner@intel.com>
Acked-by: Shannon Nelson <shannon.nelson@oracle.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Matt Turner
2017-11-14 15:51:33 -08:00
committed by Jeff Kirsher
parent 0da6090ff7
commit 8299b006d7
1 changed files with 2 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/intel/e1000e/netdev.c
View File

@@ -3306,6 +3306,8 @@ static void e1000_configure_rx(struct e1000_adapter *adapter)
ew32(RXDCTL(0), rxdctl | 0x3 | BIT(8)); ew32(RXDCTL(0), rxdctl | 0x3 | BIT(8));
} }
dev_info(&adapter->pdev->dev,
"Some CPU C-states have been disabled in order to enable jumbo frames\n");
pm_qos_update_request(&adapter->pm_qos_req, lat); pm_qos_update_request(&adapter->pm_qos_req, lat);
} else { } else {
pm_qos_update_request(&adapter->pm_qos_req, pm_qos_update_request(&adapter->pm_qos_req,