From: Jesper Dangaard Brouer <brouer@redhat.com>
To: linux-mm@kvack.org, Alexander Duyck <alexander.duyck@gmail.com>
Cc: willemdebruijn.kernel@gmail.com, netdev@vger.kernel.org,
john.fastabend@gmail.com, Saeed Mahameed <saeedm@mellanox.com>,
Jesper Dangaard Brouer <brouer@redhat.com>,
bjorn.topel@intel.com,
Alexei Starovoitov <alexei.starovoitov@gmail.com>,
Tariq Toukan <tariqt@mellanox.com>
Subject: [RFC PATCH 0/4] page_pool proof-of-concept early code
Date: Tue, 20 Dec 2016 14:28:07 +0100 [thread overview]
Message-ID: <20161220132444.18788.50875.stgit@firesoul> (raw)
This is an RFC patchset of my *work-in-progress* page_pool implemenation.
This is NOT ready for inclusion. People asked to see the code, so here we go.
This patchset is focused providing a generic replacement for the
driver page recycle caches. Where mlx5 is the first user in patch-3.
Notice that patch-2 is more "MM-invasive" (modifies put_page) than
patch-4 which is less MM-agressive (scaled back based on input from
Mel Gorman).
I do know that all page-flags are used (for 32bit), thus I'm open to
suggestions/ideas on howto work-around this (need some way to identify
a page belongs to a page pool).
This patchset is the bare-minimum PoC that allows me to benchmarks
these ideas and see if performance is going in the right direction.
It is not safe, e.g. unloading the driver can crash the kernel.
---
Jesper Dangaard Brouer (4):
doc: page_pool introduction documentation
page_pool: basic implementation of page_pool
mlx5: use page_pool
page_pool: change refcnt model
Documentation/vm/page_pool/introduction.rst | 71 ++++
drivers/net/ethernet/mellanox/mlx5/core/en.h | 1
drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 28 +
drivers/net/ethernet/mellanox/mlx5/core/en_rx.c | 47 ++
include/linux/mm.h | 1
include/linux/mm_types.h | 11 +
include/linux/page-flags.h | 13 +
include/linux/page_pool.h | 168 +++++++++
include/linux/skbuff.h | 2
include/trace/events/mmflags.h | 3
mm/Makefile | 3
mm/page_alloc.c | 6
mm/page_pool.c | 402 +++++++++++++++++++++
mm/slub.c | 4
mm/swap.c | 3
15 files changed, 741 insertions(+), 22 deletions(-)
create mode 100644 Documentation/vm/page_pool/introduction.rst
create mode 100644 include/linux/page_pool.h
create mode 100644 mm/page_pool.c
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next reply other threads:[~2016-12-20 13:28 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-20 13:28 Jesper Dangaard Brouer [this message]
2016-12-20 13:28 ` [RFC PATCH 1/4] doc: page_pool introduction documentation Jesper Dangaard Brouer
2016-12-20 13:28 ` [RFC PATCH 2/4] page_pool: basic implementation of page_pool Jesper Dangaard Brouer
2016-12-20 13:28 ` Jesper Dangaard Brouer
2017-01-03 16:07 ` Vlastimil Babka
2017-01-04 11:00 ` Jesper Dangaard Brouer
2017-01-09 10:43 ` Vlastimil Babka
2017-01-09 20:45 ` Jesper Dangaard Brouer
2017-01-09 21:58 ` Mel Gorman
2017-01-11 7:10 ` Jesper Dangaard Brouer
2017-01-11 7:10 ` Jesper Dangaard Brouer
2017-01-06 5:08 ` [lkp-developer] [page_pool] 50a8fe7622: kernel_BUG_at_mm/slub.c kernel test robot
2017-01-06 5:08 ` kernel test robot
2017-01-06 5:08 ` kernel test robot
2017-01-06 7:27 ` Jesper Dangaard Brouer
2017-01-06 7:27 ` Jesper Dangaard Brouer
2016-12-20 13:28 ` [RFC PATCH 3/4] mlx5: use page_pool Jesper Dangaard Brouer
2016-12-20 13:28 ` [RFC PATCH 4/4] page_pool: change refcnt model Jesper Dangaard Brouer
2016-12-20 13:28 ` Jesper Dangaard Brouer
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