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| author | Benjamin Poirier <bpoirier@suse.com> | 2017-01-12 17:04:14 -0800 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2017-02-18 20:35:36 -0800 |
| commit | 83a0c6e589017ce737720b9e05e2fa3fe4f7b860 (patch) | |
| tree | ca8f2826be840cdc443f7ddc27061628a0cf717d /drivers/net/ethernet/intel/i40e | |
| parent | ee847d935156b041679ad82c269796dae1afaa6b (diff) | |
| download | op-kernel-dev-83a0c6e589017ce737720b9e05e2fa3fe4f7b860.zip op-kernel-dev-83a0c6e589017ce737720b9e05e2fa3fe4f7b860.tar.gz | |
i40e: Invoke softirqs after napi_reschedule
The following message is logged from time to time when using i40e:
NOHZ: local_softirq_pending 08
i40e may schedule napi from a workqueue. Afterwards, softirqs are not run
in a deterministic time frame. The problem is the same as what was
described in commit ec13ee80145c ("virtio_net: invoke softirqs after
__napi_schedule") and this patch applies the same fix to i40e.
Signed-off-by: Benjamin Poirier <bpoirier@suse.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')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_main.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index b0215c1..e8a8351 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -4685,8 +4685,10 @@ static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi) */ if ((!tx_pending_hw) && i40e_get_tx_pending(tx_ring, true) && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) { + local_bh_disable(); if (napi_reschedule(&tx_ring->q_vector->napi)) tx_ring->tx_stats.tx_lost_interrupt++; + local_bh_enable(); } } |
