[MPTCP][PATCH v4 mptcp-next 0/5] add tracepoints

[Geliang Tang <geliangtang@gmail.com>]

v4:
 - add back patch 1.
 - use sk_fullsock in patch 2.

v3:
 - update the patch set as Paolo suggested.
 - drop the patch "mptcp: export mptcp_subflow_active".

v2:
 - add two new patches.

This patchset addressed issues 131, replace some/most pr_debug with trace
events. As Paolo suggested, we should add the tracepoints at "the packet
scheduler and the mapping status" first.

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/131

Geliang Tang (5):
  mptcp: export mptcp_subflow_active
  mptcp: add tracepoint in mptcp_subflow_get_send
  mptcp: add tracepoint in get_mapping_status
  mptcp: add tracepoint in ack_update_msk
  mptcp: add tracepoint in subflow_check_data_avail

 include/trace/events/mptcp.h | 166 +++++++++++++++++++++++++++++++++++
 net/mptcp/options.c          |   6 ++
 net/mptcp/protocol.c         |  20 +----
 net/mptcp/protocol.h         |  12 +++
 net/mptcp/subflow.c          |  10 +--
 5 files changed, 192 insertions(+), 22 deletions(-)
 create mode 100644 include/trace/events/mptcp.h

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2.30.2