All about nohz_full kernel parameter in RHEL 7

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Issue

What does nohz_full kernel parameter used for in RHEL7 ?
What is the use of dynamic tickless mode newly introduced in RHEL7 ?
What is the significance of CONFIG_NO_HZ_FULL Kconfig option ?
How to use nohz_full kernel parameter ?
How to test the functionality of nohz_full kernel parameter ?

Environment

Red Hat Enterprise Linux 7.

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