linux-kernel - [GIT PULL] tracing/rtla: Updates to the RTLA tool

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Date:   Mon, 21 Mar 2022 10:30:35 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Daniel Bristot de Oliveira <bristot@...nel.org>
Subject: [GIT PULL] tracing/rtla: Updates to the RTLA tool


Linus,

I'm sending this as a separate pull request from my normal tracing tree, as
it had dependencies to commits in your tree but not in my development
branch. As it only affects the tools/ directory, I kept it separate as it
has no changes to the kernel itself.

Real Time Linux Analysis Tool updates for 5.18

Changes to RTLA:

 - Support for adjusting tracing_threashold

 - Add -a (auto) option to make it easier for users to debug in the field

 - Add -e option to add more events to the trace

 - Add --trigger option to add triggers to events

 - Add --filter option to filter events

 - Add support to save histograms to the file

 - Add --dma-latency to set /dev/cpu_dma_latency

 - Other fixes and cleanups

Please pull the latest trace-rtla-v5.18 tree, which can be found at:


  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
trace-rtla-v5.18

Tag SHA1: cc921ea64d6df1bb8955ff5762dbcdc408e34264
Head SHA1: 75016ca3acd0de79868ef5b0694195fe05288ade


Daniel Bristot de Oliveira (15):
      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
      rtla: Check for trace off also in the trace instance
      rtla/osnoise: Fix osnoise hist stop tracing message
      rtla/timerlat: Add --dma-latency option
      rtla: Tools main loop cleanup

----
 Documentation/tools/rtla/common_options.rst        |  19 ++
 .../tools/rtla/common_osnoise_options.rst          |  10 +
 .../tools/rtla/common_timerlat_options.rst         |  12 +
 tools/tracing/rtla/src/osnoise.c                   |  83 +++++
 tools/tracing/rtla/src/osnoise.h                   |   8 +
 tools/tracing/rtla/src/osnoise_hist.c              |  95 +++++-
 tools/tracing/rtla/src/osnoise_top.c               |  91 +++++-
 tools/tracing/rtla/src/timerlat_hist.c             | 108 ++++++-
 tools/tracing/rtla/src/timerlat_top.c              | 103 +++++-
 tools/tracing/rtla/src/trace.c                     | 345 +++++++++++++++++++++
 tools/tracing/rtla/src/trace.h                     |  23 ++
 tools/tracing/rtla/src/utils.c                     |  33 ++
 tools/tracing/rtla/src/utils.h                     |   1 +
 13 files changed, 903 insertions(+), 28 deletions(-)
---------------------------