netdev - Re: [PATCH] i40e: Invoke softirqs after napi

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Message-Id: <20170113.202700.720848716249365172.davem@davemloft.net>
Date:   Fri, 13 Jan 2017 20:27:00 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     bpoirier@...e.com
Cc:     jeffrey.t.kirsher@...el.com, intel-wired-lan@...ts.osuosl.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH] i40e: Invoke softirqs after napi_reschedule

From: Benjamin Poirier <bpoirier@...e.com>
Date: Thu, 12 Jan 2017 17:04:14 -0800

> 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@...e.com>

I hope to see this from one of Jeff's pull requests to me in the
near future.