** Also affects: ubuntu-power-systems
   Importance: Undecided
       Status: New

** Changed in: ubuntu-power-systems
     Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team)

** Changed in: ubuntu-power-systems
   Importance: Undecided => Critical

** Tags added: triage-g

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https://bugs.launchpad.net/bugs/1771780

Title:
  [LTCTest][OPAL][OP920] cpupower idle-info is not listing stop4 and
  stop5 idle states when all CORES are guarded

Status in The Ubuntu-power-systems project:
  New
Status in linux package in Ubuntu:
  New

Bug description:
  == Comment: #0 - PAVAMAN SUBRAMANIYAM  - 2018-05-16 04:07:59 ==
  ---Problem Description---
  cpupower idle-info is not listing stop4 and stop5 idle states when all CORES 
are guarded
   
  ---uname output---
  Linux ltc-wspoon11 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 
2018 ppc64le ppc64le ppc64le GNU/Linux
   
  Machine Type = P9 
   
  ---Debugger---
  A debugger is not configured
   
  ---Steps to Reproduce---
  Install a P9 Open Power Hardware with Ubuntu 18.04 OS.

  root@ltc-wspoon11:~# uname -a
  Linux ltc-wspoon11 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 
2018 ppc64le ppc64le ppc64le GNU/Linux

  root@ltc-wspoon11:~# cat /etc/os-release
  NAME="Ubuntu"
  VERSION="18.04 LTS (Bionic Beaver)"
  ID=ubuntu
  ID_LIKE=debian
  PRETTY_NAME="Ubuntu 18.04 LTS"
  VERSION_ID="18.04"
  HOME_URL="https://www.ubuntu.com/";
  SUPPORT_URL="https://help.ubuntu.com/";
  BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/";
  
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy";
  VERSION_CODENAME=bionic
  UBUNTU_CODENAME=bionic

  Then guard an entire processor and also guard all the CORES in the
  processor 0 except for 1 single core.

  root@ltc-wspoon11:~# opal-gard list
   ID       | Error    | Type       | Path
  -----------------------------------------------------------------------
   00000001 | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ1/EX0/Core0
   00000002 | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ1/EX0/Core1
   00000003 | 00000000 | Manual     | /Sys0/Node0/Proc1
   00000004 | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ2/EX0/Core1
   00000005 | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ2/EX0/Core0
   00000006 | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ2/EX1/Core0
   00000007 | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ2/EX1/Core1
   00000008 | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ3/EX0/Core0
   00000009 | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ3/EX0/Core1
   0000000a | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ3/EX1/Core0
   0000000b | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ3/EX1/Core1
   0000000c | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ4/EX0/Core0
   0000000d | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ4/EX0/Core1
   0000000e | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ4/EX1/Core0
   0000000f | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ4/EX1/Core1
   00000010 | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ5/EX0/Core0
   00000011 | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ5/EX0/Core1
   00000012 | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ5/EX1/Core0
   00000013 | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ5/EX1/Core1
   00000014 | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ1/EX1/Core0
   00000015 | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ1/EX1/Core1
   00000016 | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ0/EX1/Core1
   00000017 | 00000000 | Manual     | /Sys0/Node0/Proc0/EQ0/EX1/Core0
  =======================================================================

  Then execute the cpupower idle-info command to check the idle states
  being shown in the OS.

  root@ltc-wspoon11:~# cpupower idle-info
  CPUidle driver: powernv_idle
  CPUidle governor: menu
  analyzing CPU 0:

  Number of idle states: 7
  Available idle states: snooze stop0_lite stop0 stop1_lite stop1 stop2_lite 
stop2
  snooze:
  Flags/Description: snooze
  Latency: 0
  Usage: 774653
  Duration: 7698954
  stop0_lite:
  Flags/Description: stop0_lite
  Latency: 1
  Usage: 2751
  Duration: 11363825
  stop0:
  Flags/Description: stop0
  Latency: 2
  Usage: 2343
  Duration: 915084
  stop1_lite:
  Flags/Description: stop1_lite
  Latency: 5
  Usage: 20
  Duration: 1533
  stop1:
  Flags/Description: stop1
  Latency: 5
  Usage: 1103
  Duration: 1016794
  stop2_lite:
  Flags/Description: stop2_lite
  Latency: 10
  Usage: 5
  Duration: 765
  stop2:
  Flags/Description: stop2
  Latency: 10
  Usage: 113729
  Duration: 2850877810

   
  Userspace tool common name: /usr/bin/cpupower 
   
  The userspace tool has the following bit modes: 64-bit 

  Userspace rpm: linux-tools-common

  Userspace tool obtained from project website:  na 
   
  == Comment: #8 - Akshay Adiga <aksad...@in.ibm.com> - 2018-05-16 13:29:55 ==
  Patch is posted on linux mailing list 
  https://patchwork.ozlabs.org/patch/914575/

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