Messages in this thread | | | From | Daniel Bristot de Oliveira <> | Subject | [PATCH V2 0/6] Add osnoise/options file | Date | Wed, 23 Nov 2022 18:06:18 +0100 |
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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.
So, this series now goes beyond running osnoise without a workload by adding a set of practical options using the new osnoise/options file.
The [NO_]OSNOISE_WORKLOAD option allows the tracer to be dispatched without workload, making the osnoise: tracepoints to become generic events to measure the execution time of *any* task on Linux.
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 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 documentationa
Daniel Bristot de Oliveira (6): tracing/osnoise: Fix duration type tracing/osnoise: Add osnoise/options file tracing/osnoise: Add OSNOISE_WORKLOAD option 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 | 32 +++- kernel/trace/trace_osnoise.c | 242 +++++++++++++++++++++++-- 2 files changed, 261 insertions(+), 13 deletions(-)
-- 2.32.0
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