------- Comment From shriy...@in.ibm.com 2018-03-06 06:19 EDT-------
Verified on latest kernel :
===============
Working as expected and the issue is fixed.

root@ltc-wspoon4:~# echo 0 > /sys/devices/system/cpu/cpu0/online
root@ltc-wspoon4:~# cpupower monitor
WARNING: at least one cpu is offline
|Idle_Stats
PKG |CORE|CPU | snoo | stop | stop | stop | stop
0|   0|   1|  0.00|  0.00|  0.00|  0.00| 99.24
0|   0|   2|  0.00|  0.00|  0.00|  0.00| 58.79
0|   0|   3|  0.00|  0.00|  0.00|  0.00| 58.79
0|   4|   4|  0.00|  0.00|  0.00|  0.00| 59.77
0|   4|   5|  0.00|  0.00|  0.00|  0.00|  0.00
0|   4|   6|  0.00|  0.00|  0.00|  0.00|  0.00
0|   4|   7|  0.00|  0.00|  0.00|  0.00|  0.00
0|   8|   8|  0.00|  0.00|  0.00|  0.00| 12.08

uname -r : 4.15.0-10-generic

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https://bugs.launchpad.net/bugs/1743541

Title:
  Ubuntu18.04: PowerNV - cpupower monitor will not work when cpu0 is
  offline

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