rtla usage improvements

Hi

These are some changes I have accumulated in the last weeks. Mostly improving the tool's user experience.

- On timerlat top, remove an extra \n that was breaking the output.

- Replace \t with ' ' on the auto analysis, fixing some
copy & paste.

- On timerlat top, do not print TTY formatting characters when the output is not sent to a terminal, because they break the output.

- on timerlat top and hist, add a summary with the overall results. For instance, the minimum value for all CPUs, the overall average and the maximum value from all CPUs.

- Add a --warm-up <seconds> option, allowing the workload to run for <seconds> before starting to collect results.

- Add a --trace-buffer-size option, allowing the user to set the tracing buffer size. This is mainly useful for reducing the trace file.

- Make the user-space threads the default choice, also adding the a -k option, allowing the user to switch to kerne-threads.

Daniel Bristot de Oliveira (8):
rtla/timerlat: Simplify "no value" printing on top rtla/auto-analysis: Replace \t with spaces rtla/timerlat: Use pretty formatting only on interactive tty rtla/timerlat: Add a summary for top mode rtla/timerlat: Add a summary for hist mode
rtla: Add the --warm-up option
rtla/timerlat: Make user-space threads the default
rtla: Add --trace-buffer-size option

 Documentation/tools/rtla/common_options.rst   |   7 +
 .../tools/rtla/common_timerlat_options.rst    |   6 +-
 tools/tracing/rtla/src/osnoise_hist.c         |  41 ++-
 tools/tracing/rtla/src/osnoise_top.c          |  41 ++-
 tools/tracing/rtla/src/timerlat_aa.c          | 109 ++++----
 tools/tracing/rtla/src/timerlat_hist.c        | 220 ++++++++++++++--
 tools/tracing/rtla/src/timerlat_top.c         | 236 +++++++++++++++---
 tools/tracing/rtla/src/trace.c                |  15 ++
 tools/tracing/rtla/src/trace.h                |   1 +
 9 files changed, 566 insertions(+), 110 deletions(-)

2.44.0