netdev - Re: [PATCH bpf-next 0/6] xsk: exit NAPI loop when AF

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Message-ID: <20200908113426.7af79b5b@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Tue, 8 Sep 2020 11:34:26 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Björn Töpel <bjorn.topel@...el.com>
Cc:     Jesper Dangaard Brouer <brouer@...hat.com>,
        Björn Töpel 
        <bjorn.topel@...il.com>, Eric Dumazet <eric.dumazet@...il.com>,
        ast@...nel.org, daniel@...earbox.net, netdev@...r.kernel.org,
        bpf@...r.kernel.org, magnus.karlsson@...el.com,
        davem@...emloft.net, john.fastabend@...il.com,
        intel-wired-lan@...ts.osuosl.org
Subject: Re: [PATCH bpf-next 0/6] xsk: exit NAPI loop when AF_XDP Rx ring is
 full

On Tue, 8 Sep 2020 20:28:14 +0200 Björn Töpel wrote:
> On 2020-09-08 19:24, Jakub Kicinski wrote:
> >> I'll start playing around a bit, but again, I think this simple series
> >> should go in just to make AF_XDP single core usable*today*.  
> > No objection from me.  
> 
> Thanks Jakub, but as you (probably) noticed in the other thread Maxim 
> had some valid concerns. Let's drop this for now, and I'll get back 
> after some experimentation/hacking.

Yeah, I sort of assumed you got the wake-up problem down :S

If it gets complicated it may not be worth pursuing this optimization.