Re: [PATCH bpf-next 0/9] bpf: cpumap: enable GRO for XDP_PASS frames

[Jesper Dangaard Brouer]

On 03/09/2024 23.33, Lorenzo Bianconi wrote:
> > On Fri, 30 Aug 2024 18:24:59 +0200 Alexander Lobakin wrote:
> > > * patch 4: switch cpumap from a custom kthread to a CPU-pinned
> > >    threaded NAPI;
> >
> > Could you try to use the backlog NAPI? Allocating a fake netdev and
> > using NAPI as a threading abstraction feels like an abuse. Maybe try
> > to factor out the necessary bits? What we want is using the per-cpu
> > caches, and feeding GRO. None of the IRQ related NAPI functionality
> > fits in here.
>
> I was thinking allocating a fake netdev to use NAPI APIs is quite a common
> approach, but sure, I will looking into it.

I have a use-case for cpumap where I adjust (increase) kthread priority.

Using backlog NAPI, will I still be able to change scheduling priority?

--Jesper