Merge tag 'trace-tools-v7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull RTLA tooling updates from Steven Rostedt:

 - Test actions in absence of threshold

   Cover the case which regressed in the past in tests.

 - More robust CPU count detection

   Parse /sys/devices/system/cpu/possible directly instead of going
   through libc for CPU count and sanity check against any mismatch with
   the number reported by tracefs / osnoise.

 - Add option to record IPI count in osnoise top

   In addition to counting IRQs, add an option to enable counting IPIs
   targetting the measurement CPU to the rtla-osnoise-top tool.

 - Improve runtime test usability

   Catch up with increased complexity of runtime tests with better
   defaults and more options available to the developer running the
   tests.

 - Simplify osnoise tracer option setting code

   Deduplicate osnoise tracer option setting code with macros to make it
   less error-prone and to make it easier to add new tracer options in
   the future.

* tag 'trace-tools-v7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  rtla: Simplify osnoise tracer option setting code
  rtla/tests: Add $SUBTESTS and $STOPONFAIL
  rtla/tests: Show the command line for failing tests
  rtla/tests: Use absolute path for $RTLA
  rtla/osnoise: Trace IPI events when recording a trace file
  rtla: Unconditionally clean any pre-existing filters for user-provided events
  rtla: Enable and disable events in the user-defined order
  rtla: Make struct trace_events double linked
  rtla/osnoise: Allow IPI filters to gracefully fail
  rtla/osnoise: Leverage IPI event filters when tracing a subset of CPUs
  rtla/osnoise: Record IPI count in osnoise top
  rtla/osnoise: Add IPI tracking cmdline option
  rtla/tests: Add unit test for get_max_cpu_from_list()
  rtla/tests: Add unit test for cpu_list_iterate()
  rtla: Abort on nr_cpus mismatch with tracer
  rtla: Discard trace entries with cpu >= nr_cpus
  rtla: Replace get_nprocs_conf() with sysfs possible cpus
  rtla/tests: Test actions in absence of threshold

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