Messages in this thread | | | Date | Fri, 19 Jan 2018 11:16:25 -0500 (EST) | Subject | Re: [RFC PATCH 1/4] softirq: Limit vector to a single iteration on IRQ tail | From | David Miller <> |
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From: Frederic Weisbecker <frederic@kernel.org> Date: Fri, 19 Jan 2018 16:46:11 +0100
> For now, vectors that get re-enqueued trigger ksoftirqd but they are > going to be handled by per-vector workqueues on subsequent patches.
Frederic, first of all, thanks for doing all of this work.
So this "get requeued" condition I think will trigger always for networking tunnel decapsulation.
Each decap will (eventually) do a:
__raise_softirq_irqoff(NET_RX_SOFTIRQ);
via ____napi_schedule() in net/core/dev.c
Example code path:
ip_tunnel_rcv() gro_cells_receive() napi_schedule() __napi_schedule() ____napi_schedule(); __raise_softirq_irqoff(NET_RX_SOFTIRQ);
Anyways, just FYI...
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