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

On Tue, Jul 6, 2021 at 5:51 PM Russell King (Oracle)
[off-list ref] wrote:

On Fri, Jul 02, 2021 at 03:39:47PM +0200, Matteo Croce wrote:

quoted

On Wed, 30 Jun 2021 17:17:54 +0800
Yunsheng Lin [off-list ref] wrote:

quoted

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?

I'll try to test. Please let me know what kind of testing you're
looking for (I haven't been following these patches, sorry.)

A drop test or L2 routing will be enough.
BTW I should have the macchiatobin back on friday.

Regards,
-- 
per aspera ad upstream