linux-kernel - [GIT PULL] tracing/tools: RTLA updates for 6.10

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Date: Fri, 17 May 2024 14:12:47 -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>,
 John Kacur <jkacur@...hat.com>
Subject: [GIT PULL] tracing/tools: RTLA updates for 6.10


Linus,

Specific for timerlat:

- Improves the output of timerlat top by adding a missing \n,
  and by avoiding printing color-formatting characters where
  they are translated to regular characters.

- Improves timerlat auto-analysis output by replacing '\t'
  with spaces to avoid copy-and-paste issues when reporting
  problems.

- For timerlat, make the user-space (-u) option the default,
  as it is the most complete test. Add a -k option to use
  the in-kernel workload.

- 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.

- timerlat hist was printing initial values (i.e., 0 as max,
  and ~0 as min) if the trace stopped before the first Ret-User
  event. This problem was fixed by printing the "       - "
  no value string to the output if that was the case.

For all RTLA tools:

- 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 for -t option. This option is mainly
  useful for reducing the trace file. Now rtla depends on
  libtracefs >= 1.6.

- Fix the -t [trace_file] parsing, now it does not require
  the '=' before the option parameter, and better handles the
  multiple ways a user can pass the trace_file.txt


Please pull the latest trace-tools-v6.10 tree, which can be found at:


  git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
trace-tools-v6.10

Tag SHA1: 2e2ffd01fe2dd06c66621bf7404beb31beb50ea1
Head SHA1: 59c22f70b2951d81de410d477ae536ba951b4f37


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

John Kacur (3):
      rtla/timerlat: Fix histogram report when a cpu count is 0
      rtla: Fix -t\--trace[=file]
      rtla: Documentation: Fix -t, --trace

----
 Documentation/tools/rtla/common_options.rst        |  11 +-
 .../tools/rtla/common_osnoise_options.rst          |   4 +
 .../tools/rtla/common_timerlat_options.rst         |  10 +-
 tools/tracing/rtla/Makefile.config                 |   2 +-
 tools/tracing/rtla/src/osnoise_hist.c              |  55 +++-
 tools/tracing/rtla/src/osnoise_top.c               |  55 +++-
 tools/tracing/rtla/src/timerlat_aa.c               | 109 ++++----
 tools/tracing/rtla/src/timerlat_hist.c             | 294 ++++++++++++++++++---
 tools/tracing/rtla/src/timerlat_top.c              | 250 +++++++++++++++---
 tools/tracing/rtla/src/trace.c                     |  15 ++
 tools/tracing/rtla/src/trace.h                     |   1 +
 11 files changed, 653 insertions(+), 153 deletions(-)
---------------------------