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    Subject[PATCH V3 00/19] RTLA: An interface for osnoise/timerlat tracers
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    The rtla(1) is a meta-tool that includes a set of commands that
    aims to analyze the real-time properties of Linux. But instead of
    testing Linux as a black box, rtla leverages kernel tracing
    capabilities to provide precise information about the properties
    and root causes of unexpected results.

    To start, it presents an interface to the osnoise and timerlat tracers.
    In the future, it will also serve as home to the rtsl [1] and other
    latency/noise tracers.

    The first five patches are a re-send of [2] that enable multiple
    instances for osnoise/timerlat tracers. They are required to run the -T
    option - to save a trace with osnoise: events for debugging.

    The next seven patches are rtla, rtla osnoise, and rtla timerlat.

    The following patches are the man pages for the tools.

    To compile rtla on fedora you need:
    $ git clone git://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git
    $ cd libtraceevent/
    $ make
    $ sudo make install
    $ cd ..
    $ git clone git://git.kernel.org/pub/scm/libs/libtrace/libtracefs.git
    $ cd libtracefs/
    $ make
    $ sudo make install
    $ cd ..
    $ sudo dnf install asciidoc xmlto procps-devel
    $ cd $linux/tools/tracing/rtla/
    $ make
    $ sudo make install

    This tool was be discussed at the RT-MC during LPC2021.

    [1] rtsl: https://github.com/bristot/rtsl/
    [2] https://lore.kernel.org/lkml/cover.1628775552.git.bristot@kernel.org/
    [3] https://youtu.be/cZUzc0U1jJ4

    Changes from v2:
    - Fix the miss conception of the "size" for kernel histograms (Steven/Tom)
    - Change the --skip-zeros to --with-zeros option as the former is better
    for humans (and the latter for computers to plot charts).
    - A lot of checkpatch fixes for the user-space part.
    Changes from v1:
    - Fixes -t options on osnoise tracers (-t means --trace for all tools now)
    - Fixes --bucket-size references (not --bucket_size)

    Daniel Bristot de Oliveira (19):
    trace/osnoise: Do not follow tracing_cpumask
    trace/osnoise: Split workload start from the tracer start
    trace/osnoise: Use start/stop_per_cpu_kthreads() on
    osnoise_cpus_write()
    trace/osnoise: Support a list of trace_array *tr
    trace/osnoise: Allow multiple instances of the same tracer
    rtla: Real-Time Linux Analysis tool
    rtla: Helper functions for rtla
    rtla: Add osnoise tool
    rtla/osnoise: Add osnoise top mode
    rtla/osnoise: Add the hist mode
    rtla: Add timerlat tool and timelart top mode
    rtla/timerlat: Add timerlat hist mode
    rtla: Add Documentation
    rtla: Add rtla osnoise man page
    rtla: Add rtla osnoise top documentation
    rtla: Add rtla osnoise hist documentation
    rtla: Add rtla timerlat documentation
    rtla: Add rtla timerlat top documentation
    rtla: Add rtla timerlat hist documentation

    kernel/trace/trace_osnoise.c | 410 ++++++---
    tools/tracing/rtla/Documentation/Makefile | 223 +++++
    .../tracing/rtla/Documentation/asciidoc.conf | 118 +++
    .../rtla/Documentation/manpage-base.xsl | 35 +
    .../rtla/Documentation/manpage-normal.xsl | 13 +
    .../rtla/Documentation/rtla-osnoise-hist.txt | 117 +++
    .../rtla/Documentation/rtla-osnoise-top.txt | 98 ++
    .../rtla/Documentation/rtla-osnoise.txt | 68 ++
    .../rtla/Documentation/rtla-timerlat-hist.txt | 162 ++++
    .../rtla/Documentation/rtla-timerlat-top.txt | 181 ++++
    .../rtla/Documentation/rtla-timerlat.txt | 65 ++
    tools/tracing/rtla/Documentation/rtla.txt | 56 ++
    tools/tracing/rtla/Documentation/utils.mk | 144 +++
    tools/tracing/rtla/Makefile | 71 ++
    tools/tracing/rtla/src/osnoise.c | 837 ++++++++++++++++++
    tools/tracing/rtla/src/osnoise.h | 87 ++
    tools/tracing/rtla/src/osnoise_hist.c | 783 ++++++++++++++++
    tools/tracing/rtla/src/osnoise_top.c | 567 ++++++++++++
    tools/tracing/rtla/src/rtla.c | 87 ++
    tools/tracing/rtla/src/timerlat.c | 72 ++
    tools/tracing/rtla/src/timerlat.h | 4 +
    tools/tracing/rtla/src/timerlat_hist.c | 780 ++++++++++++++++
    tools/tracing/rtla/src/timerlat_top.c | 581 ++++++++++++
    tools/tracing/rtla/src/trace.c | 219 +++++
    tools/tracing/rtla/src/trace.h | 27 +
    tools/tracing/rtla/src/utils.c | 433 +++++++++
    tools/tracing/rtla/src/utils.h | 56 ++
    27 files changed, 6173 insertions(+), 121 deletions(-)
    create mode 100644 tools/tracing/rtla/Documentation/Makefile
    create mode 100644 tools/tracing/rtla/Documentation/asciidoc.conf
    create mode 100644 tools/tracing/rtla/Documentation/manpage-base.xsl
    create mode 100644 tools/tracing/rtla/Documentation/manpage-normal.xsl
    create mode 100644 tools/tracing/rtla/Documentation/rtla-osnoise-hist.txt
    create mode 100644 tools/tracing/rtla/Documentation/rtla-osnoise-top.txt
    create mode 100644 tools/tracing/rtla/Documentation/rtla-osnoise.txt
    create mode 100644 tools/tracing/rtla/Documentation/rtla-timerlat-hist.txt
    create mode 100644 tools/tracing/rtla/Documentation/rtla-timerlat-top.txt
    create mode 100644 tools/tracing/rtla/Documentation/rtla-timerlat.txt
    create mode 100644 tools/tracing/rtla/Documentation/rtla.txt
    create mode 100644 tools/tracing/rtla/Documentation/utils.mk
    create mode 100644 tools/tracing/rtla/Makefile
    create mode 100644 tools/tracing/rtla/src/osnoise.c
    create mode 100644 tools/tracing/rtla/src/osnoise.h
    create mode 100644 tools/tracing/rtla/src/osnoise_hist.c
    create mode 100644 tools/tracing/rtla/src/osnoise_top.c
    create mode 100644 tools/tracing/rtla/src/rtla.c
    create mode 100644 tools/tracing/rtla/src/timerlat.c
    create mode 100644 tools/tracing/rtla/src/timerlat.h
    create mode 100644 tools/tracing/rtla/src/timerlat_hist.c
    create mode 100644 tools/tracing/rtla/src/timerlat_top.c
    create mode 100644 tools/tracing/rtla/src/trace.c
    create mode 100644 tools/tracing/rtla/src/trace.h
    create mode 100644 tools/tracing/rtla/src/utils.c
    create mode 100644 tools/tracing/rtla/src/utils.h

    --
    2.31.1

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