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While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:

apport-collect 1811200

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
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the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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  Add Cavium ThunderX2 SoC UNCORE PMU driver

Status in linux package in Ubuntu:

Bug description:
  No driver for PMU of L3 cache controller (L3C) and the DDR4 Memory Controller 
(DMC) for Cavium ThunderX2 SoC

  [Test Case]
  sudo perf stat -a -e \
  > uncore_dmc_0/cnt_cycles/,\
  > uncore_dmc_0/data_transfers/,\
  > uncore_dmc_0/read_txns/,\
  > uncore_dmc_0/write_txns/ sleep 1

  sudo perf stat -a -e \
  > uncore_l3c_0/read_request/,\
  > uncore_l3c_0/read_hit/,\
  > uncore_l3c_0/inv_request/,\
  > uncore_l3c_0/inv_hit/ sleep 1

  sudo perf stat -a -e uncore_dmc_0/cnt_cycles/ sleep 1

  Backport patches
  82975c46da  perf: Export perf_event_update_userpage
  d6310a3f33  Documentation: perf: Add documentation for ThunderX2 PMU uncore 
  69c32972d5  drivers/perf: Add Cavium ThunderX2 SoC UNCORE PMU driver
  and enable CONFIG_THUNDERX2_PMU=m

  [Regression Risk]
  This driver only loaded when CAV901C in ACPI table, lowest risk for other 

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