linux-kernel - Re: [PATCH net-next RFC 0/2] add elevated refcnt support for page pool

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Message-ID: <20210702153947.7b44acdf@linux.microsoft.com>
Date:   Fri, 2 Jul 2021 15:39:47 +0200
From:   Matteo Croce <mcroce@...ux.microsoft.com>
To:     Yunsheng Lin <linyunsheng@...wei.com>, <mw@...ihalf.com>,
        Sven Auhagen <sven.auhagen@...eatech.de>,
        Russell King <linux@...linux.org.uk>
Cc:     <davem@...emloft.net>, <kuba@...nel.org>, <linuxarm@...neuler.org>,
        <yisen.zhuang@...wei.com>, <salil.mehta@...wei.com>,
        <thomas.petazzoni@...tlin.com>, <linux@...linux.org.uk>,
        <hawk@...nel.org>, <ilias.apalodimas@...aro.org>, <ast@...nel.org>,
        <daniel@...earbox.net>, <john.fastabend@...il.com>,
        <akpm@...ux-foundation.org>, <peterz@...radead.org>,
        <will@...nel.org>, <willy@...radead.org>, <vbabka@...e.cz>,
        <fenghua.yu@...el.com>, <guro@...com>, <peterx@...hat.com>,
        <feng.tang@...el.com>, <jgg@...pe.ca>, <mcroce@...rosoft.com>,
        <hughd@...gle.com>, <jonathan.lemon@...il.com>, <alobakin@...me>,
        <willemb@...gle.com>, <wenxu@...oud.cn>, <cong.wang@...edance.com>,
        <haokexin@...il.com>, <nogikh@...gle.com>, <elver@...gle.com>,
        <netdev@...r.kernel.org>, <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 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?

Regards,
-- 
per aspera ad upstream