netdev - [net-next v1 PATCH 0/4] page_pool: followup changes to restore tracepoint features

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Date:   Fri, 15 Nov 2019 16:05:53 +0100
From:   Jesper Dangaard Brouer <brouer@...hat.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Toke Høiland-Jørgensen <toke@...hat.com>,
        netdev@...r.kernel.org,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        Jesper Dangaard Brouer <brouer@...hat.com>,
        Saeed Mahameed <saeedm@...lanox.com>,
        Matteo Croce <mcroce@...hat.com>,
        Jonathan Lemon <jonathan.lemon@...il.com>,
        Lorenzo Bianconi <lorenzo@...nel.org>,
        Tariq Toukan <tariqt@...lanox.com>
Subject: [net-next v1 PATCH 0/4] page_pool: followup changes to restore
 tracepoint features

This patchset is a followup to Jonathan patch, that do not release
pool until inflight == 0. That changed page_pool to be responsible for
its own delayed destruction instead of relying on xdp memory model.

As the page_pool maintainer, I'm promoting the use of tracepoint to
troubleshoot and help driver developers verify correctness when
converting at driver to use page_pool. The role of xdp:mem_disconnect
have changed, which broke my bpftrace tools for shutdown verification.
With these changes, the same capabilities are regained.

---

Jesper Dangaard Brouer (4):
      xdp: remove memory poison on free for struct xdp_mem_allocator
      page_pool: add destroy attempts counter and rename tracepoint
      page_pool: block alloc cache during shutdown
      page_pool: extend tracepoint to also include the page PFN

 include/net/page_pool.h          |    2 ++
 include/trace/events/page_pool.h |   22 +++++++++++++++-------
 net/core/page_pool.c             |   17 +++++++++++++++--
 net/core/xdp.c                   |    5 -----
 4 files changed, 32 insertions(+), 14 deletions(-)

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