Few of the key trace event symbols are not available on RHEL 8

Solution Verified - Updated -

Issue

  • It has been observed that some tracing symbols are not available on RHEL 8. When such symbols are included in the code and if it is compiled, it fails with the following warning messages :
WARNING: "__tracepoint_softirq_exit" undefined!
WARNING: "__tracepoint_softirq_entry" undefined!
WARNING: "__tracepoint_irq_handler_exit" undefined!
WARNING: "__tracepoint_irq_handler_entry" undefined!
WARNING: "__tracepoint_sched_switch" undefined!
WARNING: "__tracepoint_sched_wakeup" undefined!
  • The same symbols are available on RHEL 7 and the same code gets compiled on RHEL 7 successfully.

Environment

  • Red Hat Enterprise Linux 8

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