How to use ftrace facility to trace events on specific CPU or set of CPUs?

Solution Verified - Updated -

Issue

  • How to use ftrace facility to trace events on specific CPU or set of CPUs?
  • How do I limit the ftrace to trace events of specific set of CPUs?

Environment

  • Red Hat Enterprise Linux 9 (Beta)
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 7
  • ftrace

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