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* [PATCH rfc v6 0/4] add frag page support in page pool
@ 2021-07-20  3:35 Yunsheng Lin
  2021-07-20  3:35 ` [PATCH rfc v6 1/4] page_pool: keep pp info as long as page pool owns the page Yunsheng Lin
                   ` (3 more replies)
  0 siblings, 4 replies; 17+ messages in thread
From: Yunsheng Lin @ 2021-07-20  3:35 UTC (permalink / raw)
  To: davem, kuba
  Cc: alexander.duyck, linux, mw, linuxarm, yisen.zhuang, salil.mehta,
	thomas.petazzoni, hawk, ilias.apalodimas, ast, daniel,
	john.fastabend, akpm, peterz, will, willy, vbabka, fenghua.yu,
	guro, peterx, feng.tang, jgg, mcroce, hughd, jonathan.lemon,
	alobakin, willemb, wenxu, cong.wang, haokexin, nogikh, elver,
	yhs, kpsingh, andrii, kafai, songliubraving, netdev,
	linux-kernel, bpf

This patchset adds frag page support in page pool and
enable skb's page frag recycling based on page pool in
hns3 drvier.

RFC v6:
1. Disable frag page support in system 32-bit arch and
   64-bit DMA.

RFC v5:
1. Rename dma_addr[0] to pp_frag_count and adjust codes
   according to the rename.

RFC v4:
1. Use the dma_addr[1] to store bias.
2. Default to a pagecnt_bias of PAGE_SIZE - 1.
3. other minor comment suggested by Alexander.

RFC v3:
1. Implement the semantic of "page recycling only wait for the
   page pool user instead of all user of a page"
2. Support the frag allocation of different sizes
3. Merge patch 4 & 5 to one patch as it does not make sense to
   use page_pool_dev_alloc_pages() API directly with elevated
   refcnt.
4. other minor comment suggested by Alexander.

RFC v2:
1. Split patch 1 to more reviewable one.
2. Repurpose the lower 12 bits of the dma address to store the
   pagecnt_bias as suggested by Alexander.
3. support recycling to pool->alloc for elevated refcnt case
   too.

Yunsheng Lin (4):
  page_pool: keep pp info as long as page pool owns the page
  page_pool: add interface to manipulate frag count in page pool
  page_pool: add frag page recycling support in page pool
  net: hns3: support skb's frag page recycling based on page pool

 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c |  82 +++++++++++++++--
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.h |   3 +
 drivers/net/ethernet/marvell/mvneta.c           |   6 +-
 drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c |   2 +-
 drivers/net/ethernet/ti/cpsw.c                  |   2 +-
 drivers/net/ethernet/ti/cpsw_new.c              |   2 +-
 include/linux/mm_types.h                        |  18 ++--
 include/linux/skbuff.h                          |   4 +-
 include/net/page_pool.h                         |  65 +++++++++++---
 net/core/page_pool.c                            | 112 +++++++++++++++++++++++-
 10 files changed, 257 insertions(+), 39 deletions(-)

-- 
2.7.4


^ permalink raw reply	[flat|nested] 17+ messages in thread

end of thread, other threads:[~2021-08-02  9:17 UTC | newest]

Thread overview: 17+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-07-20  3:35 [PATCH rfc v6 0/4] add frag page support in page pool Yunsheng Lin
2021-07-20  3:35 ` [PATCH rfc v6 1/4] page_pool: keep pp info as long as page pool owns the page Yunsheng Lin
2021-07-20  3:35 ` [PATCH rfc v6 2/4] page_pool: add interface to manipulate frag count in page pool Yunsheng Lin
2021-07-20 15:43   ` Alexander Duyck
2021-07-21  8:15     ` Yunsheng Lin
2021-07-21 14:06       ` Alexander Duyck
2021-07-22  8:07         ` Yunsheng Lin
2021-07-22 15:18           ` Alexander Duyck
2021-07-23 11:12             ` Yunsheng Lin
2021-07-23 16:08               ` Alexander Duyck
2021-07-24 13:07                 ` Yunsheng Lin
2021-07-25 16:49                   ` Alexander Duyck
2021-07-27  7:54                     ` Yunsheng Lin
2021-07-27 18:38                       ` Alexander Duyck
2021-08-02  9:17                         ` Yunsheng Lin
2021-07-20  3:35 ` [PATCH rfc v6 3/4] page_pool: add frag page recycling support " Yunsheng Lin
2021-07-20  3:35 ` [PATCH rfc v6 4/4] net: hns3: support skb's frag page recycling based on " Yunsheng Lin

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