From: Paolo Abeni <pabeni@redhat.com>
To: Hannes Frederic Sowa <hannes@stressinduktion.org>,
Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>,
netdev@vger.kernel.org, jakub.kicinski@netronome.com,
"Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>,
mchan@broadcom.com, John Fastabend <john.fastabend@gmail.com>,
peter.waskiewicz.jr@intel.com,
Daniel Borkmann <borkmann@iogearbox.net>,
Andy Gospodarek <andy@greyhouse.net>,
edumazet@google.com
Subject: Re: [net-next PATCH 1/5] bpf: introduce new bpf cpu map type BPF_MAP_TYPE_CPUMAP
Date: Fri, 29 Sep 2017 11:37:37 +0200 [thread overview]
Message-ID: <1506677857.2478.5.camel@redhat.com> (raw)
In-Reply-To: <8737760wg5.fsf@stressinduktion.org>
On Fri, 2017-09-29 at 09:56 +0200, Hannes Frederic Sowa wrote:
> [adding Paolo, Eric]
>
> Alexei Starovoitov <alexei.starovoitov@gmail.com> writes:
>
> > On Thu, Sep 28, 2017 at 02:57:08PM +0200, Jesper Dangaard Brouer wrote:
>
> [...]
>
> > > + wake_up_process(rcpu->kthread);
> >
> > In general the whole thing looks like 'threaded NAPI' that Hannes was
> > proposing some time back. I liked it back then and I like it now.
> > I don't remember what were the objections back then.
> > Something scheduler related?
> > Adding Hannes.
Beyond the added scheduling complexity, the threaded NAPI
implementation proposed some time ago also possibly introduced OoO
packet delivery, because the NAPI threads were left unbound to any CPU.
Cheers,
Paolo
next prev parent reply other threads:[~2017-09-29 9:37 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-28 12:57 [net-next PATCH 0/5] New bpf cpumap type for XDP_REDIRECT Jesper Dangaard Brouer
2017-09-28 12:57 ` [net-next PATCH 1/5] bpf: introduce new bpf cpu map type BPF_MAP_TYPE_CPUMAP Jesper Dangaard Brouer
2017-09-29 3:21 ` Alexei Starovoitov
2017-09-29 7:56 ` Hannes Frederic Sowa
2017-09-29 9:37 ` Paolo Abeni [this message]
2017-09-29 9:40 ` Hannes Frederic Sowa
2017-09-29 9:14 ` Jesper Dangaard Brouer
2017-09-28 12:57 ` [net-next PATCH 2/5] bpf: XDP_REDIRECT enable use of cpumap Jesper Dangaard Brouer
2017-09-28 12:57 ` [net-next PATCH 3/5] bpf: cpumap xdp_buff to skb conversion and allocation Jesper Dangaard Brouer
2017-09-28 23:21 ` Daniel Borkmann
2017-09-29 7:46 ` Jesper Dangaard Brouer
2017-09-29 9:49 ` Jason Wang
2017-09-29 13:05 ` Jesper Dangaard Brouer
2017-09-28 12:57 ` [net-next PATCH 4/5] bpf: cpumap add tracepoints Jesper Dangaard Brouer
2017-09-28 12:57 ` [net-next PATCH 5/5] samples/bpf: add cpumap sample program xdp_redirect_cpu Jesper Dangaard Brouer
2017-09-28 22:45 ` [net-next PATCH 0/5] New bpf cpumap type for XDP_REDIRECT Daniel Borkmann
2017-09-29 6:53 ` Jesper Dangaard Brouer
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