mbox series

[V5,0/3] Add osnoise/options options

Message ID cover.1670623111.git.bristot@kernel.org
Headers
Series Add osnoise/options options |

Message

Daniel Bristot de Oliveira Dec. 9, 2022, 10:05 p.m. UTC 
  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 V4:
  - rename preempt_disable/irq_disable variables to
    disable_preemption/disable_irq (Steven Rostedt)
Changes from V3:
  - Fix documentation (Bagas Sanjaya)
  - Optmize the preempt disable option (Steven Rostedt)
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           | 52 +++++++++++++++++++++++---
 2 files changed, 65 insertions(+), 7 deletions(-)