[v6,0/7] Enhancements for PMD power management

This patchset introduces several changes related to PMD power management:

- Changed monitoring intrinsics to use callbacks as a comparison function, based
  on previous patchset [1] but incorporating feedback [2] - this hopefully will
  make it possible to add support for .get_monitor_addr in virtio
- Add a new intrinsic to monitor multiple addresses, based on RTM instruction
  set and the TPAUSE instruction
- Add support for PMD power management on multiple queues, as well as all
  accompanying infrastructure and example apps changes

v6:
- Improved the algorithm for multi-queue sleep
- Fixed segfault and addressed other feedback

v5:
- Removed "power save queue" API and replaced with mechanism suggested by
  Konstantin
- Addressed other feedback

v4:
- Replaced raw number with a macro
- Fixed all the bugs found by Konstantin
- Some other minor corrections

v3:
- Moved some doc updates to NIC features list

v2:
- Changed check inversion to callbacks
- Addressed feedback from Konstantin
- Added doc updates where necessary

[1] http://patches.dpdk.org/project/dpdk/list/?series=16930&state=*
[2] http://patches.dpdk.org/project/dpdk/patch/819ef1ace187365a615d3383e54579e3d9fb216e.1620747068.git.anatoly.burakov@intel.com/#133274

Anatoly Burakov (7):
  power_intrinsics: use callbacks for comparison
  net/af_xdp: add power monitor support
  eal: add power monitor for multiple events
  power: remove thread safety from PMD power API's
  power: support callbacks for multiple Rx queues
  power: support monitoring multiple Rx queues
  l3fwd-power: support multiqueue in PMD pmgmt modes

 doc/guides/nics/features.rst                  |  10 +
 doc/guides/prog_guide/power_man.rst           |  68 +-
 doc/guides/rel_notes/release_21_08.rst        |  11 +
 drivers/event/dlb2/dlb2.c                     |  17 +-
 drivers/net/af_xdp/rte_eth_af_xdp.c           |  34 +
 drivers/net/i40e/i40e_rxtx.c                  |  20 +-
 drivers/net/iavf/iavf_rxtx.c                  |  20 +-
 drivers/net/ice/ice_rxtx.c                    |  20 +-
 drivers/net/ixgbe/ixgbe_rxtx.c                |  20 +-
 drivers/net/mlx5/mlx5_rx.c                    |  17 +-
 examples/l3fwd-power/main.c                   |   6 -
 lib/eal/arm/rte_power_intrinsics.c            |  11 +
 lib/eal/include/generic/rte_cpuflags.h        |   2 +
 .../include/generic/rte_power_intrinsics.h    |  68 +-
 lib/eal/ppc/rte_power_intrinsics.c            |  11 +
 lib/eal/version.map                           |   3 +
 lib/eal/x86/rte_cpuflags.c                    |   2 +
 lib/eal/x86/rte_power_intrinsics.c            |  90 ++-
 lib/power/meson.build                         |   3 +
 lib/power/rte_power_pmd_mgmt.c                | 655 +++++++++++++-----
 lib/power/rte_power_pmd_mgmt.h                |   6 +
 21 files changed, 832 insertions(+), 262 deletions(-)