linux-kernel - [GIT PULL] tracing tooling: Updates for 6.5

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Date:   Tue, 4 Jul 2023 09:29:42 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Daniel Bristot de Oliveira <bristot@...nel.org>
Subject: [GIT PULL] tracing tooling: Updates for 6.5


Linus,

[ As the merge window opened up while I was in Prague, I almost forgot
  about the tooling branch (even though I was also with Daniel who did
  all these changes!) ]

Tracing tooling updates for 6.5:

- Add cgroup support for rtla via the -C option

- Add --house-keeping option that tells rtla where to place the housekeeping
  threads.

- Have rtla/timerlat have its own tracing instance instead of using the top
  level tracing instance that is the default for other tracing users to use.

- Add auto analysis to timerlat_hist

- Have rtla start the tracers after creating the instances

- Reduce rtla hwnoise down to 75% from 100% as it runs with preemption disabled
  and can cause system instability at 100%.

- Add support to run timerlat_top and timerlat_hist threads in user-space
  instead of just using the kernel tasks.

- Some minor clean ups and documentation changes.


Please pull the latest trace-tools-v6.5 tree, which can be found at:


  git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
trace-tools-v6.5

Tag SHA1: 9dedca3671c6bfa589bd14415a71e69d40d83b3d
Head SHA1: 6127383217741615f3450b684ecbee1ff570ee98


Daniel Bristot de Oliveira (11):
      rtla: Add -C cgroup support
      rtla: Add --house-keeping option
      rtla: Change monitored_cpus from char * to cpu_set_t
      rtla: Automatically move rtla to a house-keeping cpu
      rtla/timerlat: Give timerlat auto analysis its own instance
      rtla/timerlat_hist: Add auto-analysis support
      rtla: Start the tracers after creating all instances
      rtla/hwnoise: Reduce runtime to 75%
      rtla/timerlat_top: Add timerlat user-space support
      rtla/timerlat_hist: Add timerlat user-space support
      Documentation: Add tools/rtla timerlat -u option documentation

----
 Documentation/tools/rtla/common_options.rst        |   8 +
 Documentation/tools/rtla/common_timerlat_aa.rst    |   7 -
 .../tools/rtla/common_timerlat_options.rst         |   7 +
 Documentation/tools/rtla/rtla-timerlat-hist.rst    |   7 +-
 Documentation/tools/rtla/rtla-timerlat-top.rst     |   7 +
 tools/tracing/rtla/src/osnoise.c                   |  65 +++++
 tools/tracing/rtla/src/osnoise.h                   |   5 +
 tools/tracing/rtla/src/osnoise_hist.c              |  90 +++++-
 tools/tracing/rtla/src/osnoise_top.c               |  83 +++++-
 tools/tracing/rtla/src/timerlat_aa.c               |  35 ++-
 tools/tracing/rtla/src/timerlat_aa.h               |   5 +-
 tools/tracing/rtla/src/timerlat_hist.c             | 262 +++++++++++++++--
 tools/tracing/rtla/src/timerlat_top.c              | 229 +++++++++++++--
 tools/tracing/rtla/src/timerlat_u.c                | 224 ++++++++++++++
 tools/tracing/rtla/src/timerlat_u.h                |  18 ++
 tools/tracing/rtla/src/utils.c                     | 324 +++++++++++++++++++--
 tools/tracing/rtla/src/utils.h                     |   7 +
 17 files changed, 1277 insertions(+), 106 deletions(-)
 create mode 100644 tools/tracing/rtla/src/timerlat_u.c
 create mode 100644 tools/tracing/rtla/src/timerlat_u.h
---------------------------