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Message-ID: <CAFnufp1hM6WRDigAsSfM94yneRhkmxBoGG7NxRUkbfTR2WQvyA@mail.gmail.com>
Date: Wed, 7 Jul 2021 01:19:37 +0200
From: Matteo Croce <mcroce@...ux.microsoft.com>
To: "Russell King (Oracle)" <linux@...linux.org.uk>
Cc: Yunsheng Lin <linyunsheng@...wei.com>,
Marcin Wojtas <mw@...ihalf.com>,
Sven Auhagen <sven.auhagen@...eatech.de>,
David Miller <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>, linuxarm@...neuler.org,
yisen.zhuang@...wei.com, salil.mehta@...wei.com,
Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
Jesper Dangaard Brouer <hawk@...nel.org>,
Ilias Apalodimas <ilias.apalodimas@...aro.org>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
John Fastabend <john.fastabend@...il.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Peter Zijlstra <peterz@...radead.org>,
Will Deacon <will@...nel.org>,
Matthew Wilcox <willy@...radead.org>,
Vlastimil Babka <vbabka@...e.cz>,
Fenghua Yu <fenghua.yu@...el.com>,
Roman Gushchin <guro@...com>, Peter Xu <peterx@...hat.com>,
feng.tang@...el.com, Jason Gunthorpe <jgg@...pe.ca>,
Matteo Croce <mcroce@...rosoft.com>,
Hugh Dickins <hughd@...gle.com>,
Jonathan Lemon <jonathan.lemon@...il.com>,
Alexander Lobakin <alobakin@...me>,
Willem de Bruijn <willemb@...gle.com>,
wenxu <wenxu@...oud.cn>, Cong Wang <cong.wang@...edance.com>,
Kevin Hao <haokexin@...il.com>,
Aleksandr Nogikh <nogikh@...gle.com>,
Marco Elver <elver@...gle.com>, netdev@...r.kernel.org,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
bpf@...r.kernel.org
Subject: Re: [PATCH net-next RFC 0/2] add elevated refcnt support for page pool
On Tue, Jul 6, 2021 at 5:51 PM Russell King (Oracle)
<linux@...linux.org.uk> wrote:
>
> On Fri, Jul 02, 2021 at 03:39:47PM +0200, Matteo Croce wrote:
> > On Wed, 30 Jun 2021 17:17:54 +0800
> > Yunsheng Lin <linyunsheng@...wei.com> wrote:
> >
> > > This patchset adds elevated refcnt support for page pool
> > > and enable skb's page frag recycling based on page pool
> > > in hns3 drvier.
> > >
> > > Yunsheng Lin (2):
> > > page_pool: add page recycling support based on elevated refcnt
> > > net: hns3: support skb's frag page recycling based on page pool
> > >
> > > drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 79 +++++++-
> > > drivers/net/ethernet/hisilicon/hns3/hns3_enet.h | 3 +
> > > drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c | 1 +
> > > drivers/net/ethernet/marvell/mvneta.c | 6 +-
> > > drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 2 +-
> > > include/linux/mm_types.h | 2 +-
> > > include/linux/skbuff.h | 4 +-
> > > include/net/page_pool.h | 30 ++-
> > > net/core/page_pool.c | 215
> > > +++++++++++++++++---- 9 files changed, 285 insertions(+), 57
> > > deletions(-)
> > >
> >
> > Interesting!
> > Unfortunately I'll not have access to my macchiatobin anytime soon, can
> > someone test the impact, if any, on mvpp2?
>
> I'll try to test. Please let me know what kind of testing you're
> looking for (I haven't been following these patches, sorry.)
>
A drop test or L2 routing will be enough.
BTW I should have the macchiatobin back on friday.
Regards,
--
per aspera ad upstream
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