linux-kernel - [PATCH V3 0/3] Add osnoise/options options

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Message-Id: <cover.1669409262.git.bristot@kernel.org>
Date:   Fri, 25 Nov 2022 22:20:21 +0100
From:   Daniel Bristot de Oliveira <bristot@...nel.org>
To:     Daniel Bristot de Oliveira <bristot@...nel.org>,
        Steven Rostedt <rostedt@...dmis.org>
Cc:     Masami Hiramatsu <mhiramat@...nel.org>,
        Jonathan Corbet <corbet@....net>,
        Juri Lelli <juri.lelli@...hat.com>,
        Clark Williams <williams@...hat.com>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH V3 0/3] Add osnoise/options options

Was: Allow osnoise tracer to run without workload [1]

After adding the osnoise/options file, a set of on/off options
came to my mind, most based on discussions while debugging problems
with Juri and Clark.

The PANIC_ON_STOP option facilitates the vmcore generation to aid
in the latency analysis using a crash dump.

The OSNOISE_PREEMPT_DISABLE and OSNOISE_IRQ_DISABLE options refine
the type of noise that the osnoise tracer detects, allowing the
tool to measure only IRQ-related noise, or NMI/HW-related noise,
respectively.

Each patch has a description of the options and the last patch
documents them in the osnoise documentation file.

[1] https://lore.kernel.org/r/cover.1668692096.git.bristot@kernel.org/

Changes from v2:
  - rebased on top of linux-trace.git/ftrace/core
  - removed the patches already added to the ftrace/core
Changes from v1:
  - Changed the cover letter topic
  - Add Acked-by Masami to the first patch
  - Add the PANIC_ON_STOP option
  - Add the OSNOISE_PREEMPT_DISABLE and OSNOISE_IRQ_DISABLE options
  - Improved the documentation

Daniel Bristot de Oliveira (3):
  tracing/osnoise: Add PANIC_ON_STOP option
  tracing/osnoise: Add preempt and/or irq disabled options
  Documentation/osnoise: Add osnoise/options documentation

 Documentation/trace/osnoise-tracer.rst | 20 ++++++++++--
 kernel/trace/trace_osnoise.c           | 44 +++++++++++++++++++++++---
 2 files changed, 57 insertions(+), 7 deletions(-)

-- 
2.32.0