linux/Documentation/trace/index.rst
Jani Nikula a592a36e49 Documentation: use a source-read extension for the index link boilerplate
The root document usually has a special :ref:`genindex` link to the
generated index. This is also the case for Documentation/index.rst. The
other index.rst files deeper in the directory hierarchy usually don't.

For SPHINXDIRS builds, the root document isn't Documentation/index.rst,
but some other index.rst in the hierarchy. Currently they have a
".. only::" block to add the index link when doing SPHINXDIRS html
builds.

This is obviously very tedious and repetitive. The link is also added to
all index.rst files in the hierarchy for SPHINXDIRS builds, not just the
root document.

Put the boilerplate in a sphinx-includes/subproject-index.rst file, and
include it at the end of the root document for subproject builds in an
ad-hoc source-read extension defined in conf.py.

For now, keep having the boilerplate in translations, because this
approach currently doesn't cover translated index link headers.

Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
[jc: did s/doctree/kern_doc_dir/ ]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260123143149.2024303-1-jani.nikula@intel.com>
2026-01-23 11:59:34 -07:00

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================================
Linux Tracing Technologies Guide
================================
Tracing in the Linux kernel is a powerful mechanism that allows
developers and system administrators to analyze and debug system
behavior. This guide provides documentation on various tracing
frameworks and tools available in the Linux kernel.
Introduction to Tracing
-----------------------
This section provides an overview of Linux tracing mechanisms
and debugging approaches.
.. toctree::
:maxdepth: 1
debugging
tracepoints
tracepoint-analysis
ring-buffer-map
Core Tracing Frameworks
-----------------------
The following are the primary tracing frameworks integrated into
the Linux kernel.
.. toctree::
:maxdepth: 1
ftrace
ftrace-design
ftrace-uses
kprobes
kprobetrace
fprobetrace
eprobetrace
fprobe
ring-buffer-design
Event Tracing and Analysis
--------------------------
A detailed explanation of event tracing mechanisms and their
applications.
.. toctree::
:maxdepth: 1
events
events-kmem
events-power
events-nmi
events-msr
boottime-trace
histogram
histogram-design
Hardware and Performance Tracing
--------------------------------
This section covers tracing features that monitor hardware
interactions and system performance.
.. toctree::
:maxdepth: 1
intel_th
stm
sys-t
coresight/index
rv/index
hisi-ptt
mmiotrace
hwlat_detector
osnoise-tracer
timerlat-tracer
User-Space Tracing
------------------
These tools allow tracing user-space applications and
interactions.
.. toctree::
:maxdepth: 1
user_events
uprobetracer
Additional Resources
--------------------
For more details, refer to the respective documentation of each
tracing tool and framework.