Messages in this thread | | | Date | Wed, 11 May 2016 07:45:51 -0700 | Subject | Re: [RFC PATCH 0/2] net: threadable napi poll loop | From | Eric Dumazet <> |
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On Wed, May 11, 2016 at 7:38 AM, Paolo Abeni <pabeni@redhat.com> wrote:
> Uh, we have likely the same issue in the net_rx_action() function, which > also execute with bh disabled and check for jiffies changes even on > single core hosts ?!?
That is why we have a loop break after netdev_budget=300 packets. And a sysctl to eventually tune this.
Same issue for softirq handler, look at commit 34376a50fb1fa095b9d0636fa41ed2e73125f214
Your questions about this central piece of networking code are worrying.
> > Aren't jiffies updated by the timer interrupt ? and thous even with > bh_disabled ?!?
Exactly my point : jiffie wont be updated in your code, since you block BH.
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