From: Christoph Hellwig <hch@infradead.org>
To: Jason Gunthorpe <jgg@ziepe.ca>
Cc: "Pavel Begunkov" <asml.silence@gmail.com>,
"Christoph Hellwig" <hch@infradead.org>,
"Mina Almasry" <almasrymina@google.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-doc@vger.kernel.org, linux-alpha@vger.kernel.org,
linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org,
sparclinux@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
linux-arch@vger.kernel.org, bpf@vger.kernel.org,
linux-kselftest@vger.kernel.org, linux-media@vger.kernel.org,
dri-devel@lists.freedesktop.org,
"David S. Miller" <davem@davemloft.net>,
"Eric Dumazet" <edumazet@google.com>,
"Jakub Kicinski" <kuba@kernel.org>,
"Paolo Abeni" <pabeni@redhat.com>,
"Jonathan Corbet" <corbet@lwn.net>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Ivan Kokshaysky" <ink@jurassic.park.msu.ru>,
"Matt Turner" <mattst88@gmail.com>,
"Thomas Bogendoerfer" <tsbogend@alpha.franken.de>,
"James E.J. Bottomley" <James.Bottomley@hansenpartnership.com>,
"Helge Deller" <deller@gmx.de>,
"Andreas Larsson" <andreas@gaisler.com>,
"Jesper Dangaard Brouer" <hawk@kernel.org>,
"Ilias Apalodimas" <ilias.apalodimas@linaro.org>,
"Steven Rostedt" <rostedt@goodmis.org>,
"Masami Hiramatsu" <mhiramat@kernel.org>,
"Mathieu Desnoyers" <mathieu.desnoyers@efficios.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"Alexei Starovoitov" <ast@kernel.org>,
"Daniel Borkmann" <daniel@iogearbox.net>,
"Andrii Nakryiko" <andrii@kernel.org>,
"Martin KaFai Lau" <martin.lau@linux.dev>,
"Eduard Zingerman" <eddyz87@gmail.com>,
"Song Liu" <song@kernel.org>,
"Yonghong Song" <yonghong.song@linux.dev>,
"John Fastabend" <john.fastabend@gmail.com>,
"KP Singh" <kpsingh@kernel.org>,
"Stanislav Fomichev" <sdf@google.com>,
"Hao Luo" <haoluo@google.com>, "Jiri Olsa" <jolsa@kernel.org>,
"Steffen Klassert" <steffen.klassert@secunet.com>,
"Herbert Xu" <herbert@gondor.apana.org.au>,
"David Ahern" <dsahern@kernel.org>,
"Willem de Bruijn" <willemdebruijn.kernel@gmail.com>,
"Shuah Khan" <shuah@kernel.org>,
"Sumit Semwal" <sumit.semwal@linaro.org>,
"Christian König" <christian.koenig@amd.com>,
"Amritha Nambiar" <amritha.nambiar@intel.com>,
"Maciej Fijalkowski" <maciej.fijalkowski@intel.com>,
"Alexander Mikhalitsyn" <alexander@mihalicyn.com>,
"Kaiyuan Zhang" <kaiyuanz@google.com>,
"Christian Brauner" <brauner@kernel.org>,
"Simon Horman" <horms@kernel.org>,
"David Howells" <dhowells@redhat.com>,
"Florian Westphal" <fw@strlen.de>,
"Yunsheng Lin" <linyunsheng@huawei.com>,
"Kuniyuki Iwashima" <kuniyu@amazon.com>,
"Jens Axboe" <axboe@kernel.dk>,
"Arseniy Krasnov" <avkrasnov@salutedevices.com>,
"Aleksander Lobakin" <aleksander.lobakin@intel.com>,
"Michael Lass" <bevan@bi-co.net>, "Jiri Pirko" <jiri@resnulli.us>,
"Sebastian Andrzej Siewior" <bigeasy@linutronix.de>,
"Lorenzo Bianconi" <lorenzo@kernel.org>,
"Richard Gobert" <richardbgobert@gmail.com>,
"Sridhar Samudrala" <sridhar.samudrala@intel.com>,
"Xuan Zhuo" <xuanzhuo@linux.alibaba.com>,
"Johannes Berg" <johannes.berg@intel.com>,
"Abel Wu" <wuyun.abel@bytedance.com>,
"Breno Leitao" <leitao@debian.org>, "David Wei" <dw@davidwei.uk>,
"Shailend Chand" <shailend@google.com>,
"Harshitha Ramamurthy" <hramamurthy@google.com>,
"Shakeel Butt" <shakeel.butt@linux.dev>,
"Jeroen de Borst" <jeroendb@google.com>,
"Praveen Kaligineedi" <pkaligineedi@google.com>
Subject: Re: [RFC PATCH net-next v8 02/14] net: page_pool: create hooks for custom page providers
Date: Tue, 7 May 2024 09:23:24 -0700 [thread overview]
Message-ID: <ZjpVfPqGNfE5N4bl@infradead.org> (raw)
In-Reply-To: <20240507161857.GA4718@ziepe.ca>
On Tue, May 07, 2024 at 01:18:57PM -0300, Jason Gunthorpe wrote:
> On Tue, May 07, 2024 at 05:05:12PM +0100, Pavel Begunkov wrote:
> > > even in tree if you give them enough rope, and they should not have
> > > that rope when the only sensible options are page/folio based kernel
> > > memory (incuding large/huge folios) and dmabuf.
> >
> > I believe there is at least one deep confusion here, considering you
> > previously mentioned Keith's pre-mapping patches. The "hooks" are not
> > that about in what format you pass memory, it's arguably the least
> > interesting part for page pool, more or less it'd circulate whatever
> > is given. It's more of how to have a better control over buffer lifetime
> > and implement a buffer pool passing data to users and empty buffers
> > back.
>
> Isn't that more or less exactly what dmabuf is? Why do you need
> another almost dma-buf thing for another project?
That's the exact point I've been making since the last round of
the series. We don't need to reinvent dmabuf poorly in every
subsystem, but instead fix the odd parts in it and make it suitable
for everyone.
next prev parent reply other threads:[~2024-05-07 16:23 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-03 0:20 [RFC PATCH net-next v8 00/14] Device Memory TCP Mina Almasry
2024-04-03 0:20 ` [RFC PATCH net-next v8 01/14] queue_api: define queue api Mina Almasry
2024-04-03 0:20 ` [RFC PATCH net-next v8 02/14] net: page_pool: create hooks for custom page providers Mina Almasry
2024-05-01 7:54 ` Christoph Hellwig
2024-05-03 20:10 ` Mina Almasry
2024-05-06 12:04 ` Christoph Hellwig
2024-05-07 16:05 ` Pavel Begunkov
2024-05-07 16:18 ` Jason Gunthorpe
2024-05-07 16:23 ` Christoph Hellwig [this message]
2024-05-07 16:42 ` Mina Almasry
2024-05-07 16:48 ` Jason Gunthorpe
2024-05-07 17:19 ` Daniel Vetter
2024-05-07 17:25 ` Pavel Begunkov
2024-05-07 17:56 ` Jason Gunthorpe
2024-05-07 19:35 ` Pavel Begunkov
2024-05-07 23:32 ` Jason Gunthorpe
2024-05-08 7:16 ` Daniel Vetter
2024-05-08 11:35 ` Pavel Begunkov
2024-05-08 15:34 ` Daniel Vetter
2024-05-08 15:51 ` Christoph Hellwig
2024-05-08 17:02 ` Pavel Begunkov
2024-05-09 4:49 ` Christoph Hellwig
2024-05-08 11:30 ` Pavel Begunkov
2024-05-08 14:25 ` Jason Gunthorpe
2024-05-08 15:44 ` Pavel Begunkov
2024-05-08 15:58 ` Jason Gunthorpe
2024-05-08 16:13 ` Pavel Begunkov
2024-05-07 17:17 ` Pavel Begunkov
2024-05-07 16:55 ` Pavel Begunkov
2024-05-07 17:15 ` Mina Almasry
2024-05-07 17:34 ` Pavel Begunkov
2024-04-03 0:20 ` [RFC PATCH net-next v8 03/14] net: netdev netlink api to bind dma-buf to a net device Mina Almasry
2024-04-03 0:20 ` [RFC PATCH net-next v8 04/14] netdev: support binding dma-buf to netdevice Mina Almasry
2024-04-24 17:35 ` David Wei
2024-04-24 22:11 ` Mina Almasry
2024-04-03 0:20 ` [RFC PATCH net-next v8 05/14] netdev: netdevice devmem allocator Mina Almasry
2024-04-03 0:20 ` [RFC PATCH net-next v8 06/14] page_pool: convert to use netmem Mina Almasry
2024-04-03 17:27 ` Simon Horman
2024-04-03 0:20 ` [RFC PATCH net-next v8 07/14] page_pool: devmem support Mina Almasry
2024-04-27 0:17 ` David Wei
2024-04-27 2:11 ` Mina Almasry
2024-04-30 13:31 ` Pavel Begunkov
2024-04-30 13:45 ` Jens Axboe
2024-04-30 18:29 ` Mina Almasry
2024-04-30 18:55 ` Jens Axboe
2024-04-30 19:19 ` Mina Almasry
2024-05-01 13:58 ` Jesper Dangaard Brouer
2024-05-01 7:55 ` Christoph Hellwig
2024-05-06 0:29 ` David Wei
2024-04-03 0:20 ` [RFC PATCH net-next v8 08/14] memory-provider: dmabuf devmem memory provider Mina Almasry
2024-04-03 0:20 ` [RFC PATCH net-next v8 09/14] net: support non paged skb frags Mina Almasry
2024-04-03 0:20 ` [RFC PATCH net-next v8 10/14] net: add support for skbs with unreadable frags Mina Almasry
2024-04-03 0:20 ` [RFC PATCH net-next v8 11/14] tcp: RX path for devmem TCP Mina Almasry
2024-04-03 0:20 ` [RFC PATCH net-next v8 12/14] net: add SO_DEVMEM_DONTNEED setsockopt to release RX frags Mina Almasry
2024-04-03 0:20 ` [RFC PATCH net-next v8 13/14] net: add devmem TCP documentation Mina Almasry
2024-05-03 13:14 ` Bagas Sanjaya
2024-04-03 0:20 ` [RFC PATCH net-next v8 14/14] selftests: add ncdevmem, netcat for devmem TCP Mina Almasry
2024-04-08 15:57 ` Cong Wang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=ZjpVfPqGNfE5N4bl@infradead.org \
--to=hch@infradead.org \
--cc=James.Bottomley@hansenpartnership.com \
--cc=aleksander.lobakin@intel.com \
--cc=alexander@mihalicyn.com \
--cc=almasrymina@google.com \
--cc=amritha.nambiar@intel.com \
--cc=andreas@gaisler.com \
--cc=andrii@kernel.org \
--cc=arnd@arndb.de \
--cc=asml.silence@gmail.com \
--cc=ast@kernel.org \
--cc=avkrasnov@salutedevices.com \
--cc=axboe@kernel.dk \
--cc=bevan@bi-co.net \
--cc=bigeasy@linutronix.de \
--cc=bpf@vger.kernel.org \
--cc=brauner@kernel.org \
--cc=christian.koenig@amd.com \
--cc=corbet@lwn.net \
--cc=daniel@iogearbox.net \
--cc=davem@davemloft.net \
--cc=deller@gmx.de \
--cc=dhowells@redhat.com \
--cc=dri-devel@lists.freedesktop.org \
--cc=dsahern@kernel.org \
--cc=dw@davidwei.uk \
--cc=eddyz87@gmail.com \
--cc=edumazet@google.com \
--cc=fw@strlen.de \
--cc=haoluo@google.com \
--cc=hawk@kernel.org \
--cc=herbert@gondor.apana.org.au \
--cc=horms@kernel.org \
--cc=hramamurthy@google.com \
--cc=ilias.apalodimas@linaro.org \
--cc=ink@jurassic.park.msu.ru \
--cc=jeroendb@google.com \
--cc=jgg@ziepe.ca \
--cc=jiri@resnulli.us \
--cc=johannes.berg@intel.com \
--cc=john.fastabend@gmail.com \
--cc=jolsa@kernel.org \
--cc=kaiyuanz@google.com \
--cc=kpsingh@kernel.org \
--cc=kuba@kernel.org \
--cc=kuniyu@amazon.com \
--cc=leitao@debian.org \
--cc=linux-alpha@vger.kernel.org \
--cc=linux-arch@vger.kernel.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-kselftest@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=linux-mips@vger.kernel.org \
--cc=linux-parisc@vger.kernel.org \
--cc=linux-trace-kernel@vger.kernel.org \
--cc=linyunsheng@huawei.com \
--cc=lorenzo@kernel.org \
--cc=maciej.fijalkowski@intel.com \
--cc=martin.lau@linux.dev \
--cc=mathieu.desnoyers@efficios.com \
--cc=mattst88@gmail.com \
--cc=mhiramat@kernel.org \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=pkaligineedi@google.com \
--cc=richard.henderson@linaro.org \
--cc=richardbgobert@gmail.com \
--cc=rostedt@goodmis.org \
--cc=sdf@google.com \
--cc=shailend@google.com \
--cc=shakeel.butt@linux.dev \
--cc=shuah@kernel.org \
--cc=song@kernel.org \
--cc=sparclinux@vger.kernel.org \
--cc=sridhar.samudrala@intel.com \
--cc=steffen.klassert@secunet.com \
--cc=sumit.semwal@linaro.org \
--cc=tsbogend@alpha.franken.de \
--cc=willemdebruijn.kernel@gmail.com \
--cc=wuyun.abel@bytedance.com \
--cc=xuanzhuo@linux.alibaba.com \
--cc=yonghong.song@linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).