[PATCH v7 0/5] lcore telemetry improvements

[Robin Jarry <rjarry@redhat.com>]

This is a follow up on previous work by Kevin Laatz:

http://patches.dpdk.org/project/dpdk/list/?series=24658&state=*

This series is aimed at allowing DPDK applications to expose their CPU
usage stats in the DPDK telemetry under /eal/lcore/info. This is a much
more basic and naive approach which leaves the cpu cycles accounting
completely up to the application.

For reference, I have implemented a draft patch in OvS to use
rte_lcore_register_usage_cb() and report the already available busy
cycles information.

https://github.com/rjarry/ovs/commit/643e672fe388e348ea7ccbbda6f5a87a066fd919

Changes since v6:

- Added release notes entry
- Moved lcore role enum to name conversion in a function for reuse
- Moved rte_lcore_register_usage_cb in a 23.03 block of eal/version.map
- Style & indentation fixes
- Use asprintf to format busy/total cycles in lcore_dump_cb

Changes since v5:

- Added/rephrased some inline comments to address reviews.
- Added a new commit that adds the /eal/lcore/usage endpoint as
  suggested by Kevin and Morten.

Robin Jarry (5):
  eal: add lcore info in telemetry
  eal: report applications lcore usage
  app/testpmd: add dump command for lcores
  app/testpmd: report lcore usage
  eal: add lcore usage telemetry endpoint

 app/test-pmd/5tswap.c                       |   5 +-
 app/test-pmd/cmdline.c                      |   3 +
 app/test-pmd/csumonly.c                     |   6 +-
 app/test-pmd/flowgen.c                      |   2 +-
 app/test-pmd/icmpecho.c                     |   6 +-
 app/test-pmd/iofwd.c                        |   5 +-
 app/test-pmd/macfwd.c                       |   5 +-
 app/test-pmd/macswap.c                      |   5 +-
 app/test-pmd/noisy_vnf.c                    |   4 +
 app/test-pmd/rxonly.c                       |   5 +-
 app/test-pmd/shared_rxq_fwd.c               |   5 +-
 app/test-pmd/testpmd.c                      |  40 +++-
 app/test-pmd/testpmd.h                      |  14 +-
 app/test-pmd/txonly.c                       |   7 +-
 doc/guides/rel_notes/release_23_03.rst      |   8 +
 doc/guides/testpmd_app_ug/testpmd_funcs.rst |   7 +
 lib/eal/common/eal_common_lcore.c           | 227 ++++++++++++++++++--
 lib/eal/include/rte_lcore.h                 |  35 +++
 lib/eal/version.map                         |   3 +
 19 files changed, 347 insertions(+), 45 deletions(-)

-- 
2.39.1