[Intel-wired-lan] [PATCH] i40e: Invoke softirqs after napi_reschedule
Bowers, AndrewX
andrewx.bowers at intel.com
Mon Jan 30 21:39:16 UTC 2017
> -----Original Message-----
> From: Intel-wired-lan [mailto:intel-wired-lan-bounces at lists.osuosl.org] On
> Behalf Of Benjamin Poirier
> Sent: Thursday, January 12, 2017 5:04 PM
> To: Kirsher, Jeffrey T <jeffrey.t.kirsher at intel.com>
> Cc: netdev at vger.kernel.org; intel-wired-lan at lists.osuosl.org
> Subject: [Intel-wired-lan] [PATCH] 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 at suse.com>
> ---
> drivers/net/ethernet/intel/i40e/i40e_main.c | 2 ++
> 1 file changed, 2 insertions(+)
Tested-by: Andrew Bowers <andrewx.bowers at intel.com>
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