Power Management Debug Support

modulename: pm-debug.ko

configname: CONFIG_PM_DEBUG

Linux Kernel Configuration
└─>Power management and ACPI options
└─>Power Management Debug Support
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This option enables various debugging support in the Power Management
code. This is helpful when debugging and reporting PM bugs, like
suspend support.

source code: