Merge tag 'trace-tools-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-traceHEADmaster

Pull RTLA tool updates from Steven Rostedt:

 - Fix discrepancy in --dump-tasks option

   Due to a mistake, rtla-timerlat-hist used the CLI syntax
   "--dump-task" instead of the documented "--dump-tasks". Change the
   option to match both documentation and the other timerlat tool,
   rtla-timerlat-top.

 - Extend coverage of runtime tests

   Cover both top and hist tools in all applicable test cases, add tests
   for a few uncovered options, and extend checks for some existing
   tests.

 - Add unit tests for actions

   rtla's actions feature is implemented in its source file and contains
   non-trivial parsing logic. Cover it with unit tests.

 - Stop record trace on interrupt

   Fix a bug where an interval exists after receiving a signal in which
   the main instance is stopped but the record instance is not, leading
   to discrepancies in reported results and sometimes rtla hanging.

 - Restore continue flag in actions_perform()

   Fix a bug where rtla always continues tracing after hitting a
   threshold even if the continue action was triggered just once, and
   add tests verifying that the flag is reset properly.

 - Migrate command line interface to libsubcmd

   Replace rtla's argument parsing using getopt_long() with libsubcmd,
   used by perf and objtool, to reuse existing code and auto-generate
   better help messages. Extensive unit tests are included to detect
   regressions.

 - Add -A/--aligned option to timerlat tools

   Add an option to align timerlat threads, based on the recently
   introduced TIMERLAT_ALIGN option of the timerlat tracer, together
   with unit tests and documentation.

 - Document tests in README

   Document how to run unit and runtime tests in rtla's README.txt,
   including the dependencies needed to run them.

* tag 'trace-tools-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (26 commits)
  rtla: Document tests in README
  Documentation/rtla: Add -A/--aligned option
  rtla/tests: Add unit tests for -A/--aligned option
  rtla/timerlat: Add -A/--aligned CLI option
  rtla/tests: Add unit tests for CLI option callbacks
  rtla/tests: Add unit tests for _parse_args() functions
  rtla: Parse cmdline using libsubcmd
  tools subcmd: allow parsing distinct --opt and --no-opt
  tools subcmd: support optarg as separate argument
  rtla: Add libsubcmd dependency
  rtla/tests: Add runtime tests for restoring continue flag
  rtla/tests: Run runtime tests in temporary directory
  rtla/tests: Add unit test for restoring continue flag
  rtla/actions: Restore continue flag in actions_perform()
  rtla: Stop the record trace on interrupt
  rtla/tests: Add unit tests for actions module
  rtla/tests: Add runtime tests for -C/--cgroup
  rtla/tests: Add runtime test for -k and -u options
  rtla/tests: Add runtime test for -H/--house-keeping
  rtla/tests: Cover all hist options in runtime tests
  ...

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