[V2,00/11] rtla: Improved tracing support

Message

Daniel Bristot de Oliveira Feb. 21, 2022, 10:16 p.m. UTC

This set introduces some tracing facilities to rtla tools:

- Add the possibility to change the tracing_thresh to osnoise,
allowing a fine tune of OS noise detection.

- Add the auto-tracing feature (-a threshold us), which aims
helping the first approach to a problem by setting common
tracing features with a single parameter.

- Add -e/--event option, allowing osnoise and timerlat to
enable additional trace events via (possible multiple)
-e sys:event options.

- Add the --filter option to filter the previous -e event.

- Add the --trigger option to allow the usage of tracing
trigger of the previously set -e event. If the trigger
is hist: one, rtla automatically saves the hist file
associated with the -e event.

Depends on "rtla: Some RTLA fixes for 5.17":
   https://lore.kernel.org/lkml/[e-mail]/

Changes from V1:
 - Add -e to osnoise/timerlat hist
 - Add --trigger
 - Add --filter
 - Add support to save hist file
 - Function name refactoring

Daniel Bristot de Oliveira (11):
  rtla/osnoise: Add support to adjust the tracing_thresh
  rtla/osnoise: Add an option to set the threshold
  rtla/osnoise: Add the automatic trace option
  rtla/timerlat: Add the automatic trace option
  rtla/trace: Add trace events helpers
  rtla: Add -e/--event support
  rtla/trace: Add trace event trigger helpers
  rtla: Add --trigger support
  rtla/trace: Add trace event filter helpers
  rtla: Add --filter support
  rtla/trace: Save event histogram output to a file

 Documentation/tools/rtla/common_options.rst   |  19 +
 .../tools/rtla/common_osnoise_options.rst     |  10 +
 .../tools/rtla/common_timerlat_options.rst    |   7 +
 tools/tracing/rtla/src/osnoise.c              |  83 +++++
 tools/tracing/rtla/src/osnoise.h              |   8 +
 tools/tracing/rtla/src/osnoise_hist.c         |  87 ++++-
 tools/tracing/rtla/src/osnoise_top.c          |  83 ++++-
 tools/tracing/rtla/src/timerlat_hist.c        |  78 ++++-
 tools/tracing/rtla/src/timerlat_top.c         |  73 +++-
 tools/tracing/rtla/src/trace.c                | 326 ++++++++++++++++++
 tools/tracing/rtla/src/trace.h                |  22 ++
 11 files changed, 782 insertions(+), 14 deletions(-)