linux-kernel - Re: [PATCH v5 RFC 1/6] page_pool: frag API support for 32-bit arch with 64-bit DMA

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Message-ID: <6e0ca9e8-1238-0581-2742-acdc88b252ae@redhat.com>
Date:   Fri, 14 Jul 2023 15:44:32 +0200
From:   Jesper Dangaard Brouer <jbrouer@...hat.com>
To:     Yunsheng Lin <linyunsheng@...wei.com>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     brouer@...hat.com,
        Alexander Lobakin <aleksander.lobakin@...el.com>,
        Yunsheng Lin <yunshenglin0825@...il.com>, davem@...emloft.net,
        pabeni@...hat.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Lorenzo Bianconi <lorenzo@...nel.org>,
        Alexander Duyck <alexander.duyck@...il.com>,
        Liang Chen <liangchen.linux@...il.com>,
        Saeed Mahameed <saeedm@...dia.com>,
        Leon Romanovsky <leon@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        linux-rdma@...r.kernel.org
Subject: Re: [PATCH v5 RFC 1/6] page_pool: frag API support for 32-bit arch
 with 64-bit DMA


On 14/07/2023 14.16, Yunsheng Lin wrote:
>> I know that Olek has a plan to remove the skbuff dependency completely
>> but functionally / for any future dependencies - this should work?
 >
> I am not experienced and confident enough to say about this for now.
> 

A trick Eric once shared with me is this make command:

  make net/core/page_pool.i

It will generate a file "net/core/page_pool.i" that kind of shows how
the includes gets processed, I believe it is the C preprocess output.

--Jesper