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+.. SPDX-License-Identifier: CC-BY-SA-2.0-UK
+
+******************************************
+Yocto Project Profiling and Tracing Manual
+******************************************
+
+Introduction
+============
+
+Yocto bundles a number of tracing and profiling tools --- this 'HOWTO'
+describes their basic usage and shows by example how to make use of them
+to examine application and system behavior.
+
+The tools presented are for the most part completely open-ended and have
+quite good and/or extensive documentation of their own which can be used
+to solve just about any problem you might come across in Linux. Each
+section that describes a particular tool has links to that tool's
+documentation and website.
+
+The purpose of this 'HOWTO' is to present a set of common and generally
+useful tracing and profiling idioms along with their application (as
+appropriate) to each tool, in the context of a general-purpose
+'drill-down' methodology that can be applied to solving a large number
+(90%?) of problems. For help with more advanced usages and problems,
+please see the documentation and/or websites listed for each tool.
+
+The final section of this 'HOWTO' is a collection of real-world examples
+which we'll be continually adding to as we solve more problems using the
+tools --- feel free to add your own examples to the list!
+
+General Setup
+=============
+
+Most of the tools are available only in 'sdk' images or in images built
+after adding 'tools-profile' to your local.conf. So, in order to be able
+to access all of the tools described here, please first build and boot
+an 'sdk' image e.g. ::
+
+   $ bitbake core-image-sato-sdk
+
+or alternatively by adding 'tools-profile' to the :term:`EXTRA_IMAGE_FEATURES` line in
+your local.conf::
+
+   EXTRA_IMAGE_FEATURES = "debug-tweaks tools-profile"
+
+If you use the 'tools-profile' method, you don't need to build an sdk image -
+the tracing and profiling tools will be included in non-sdk images as well e.g.::
+
+   $ bitbake core-image-sato
+
+.. note::
+
+   By default, the Yocto build system strips symbols from the binaries
+   it packages, which makes it difficult to use some of the tools.
+
+   You can prevent that by setting the
+   :term:`INHIBIT_PACKAGE_STRIP`
+   variable to "1" in your ``local.conf`` when you build the image::
+
+      INHIBIT_PACKAGE_STRIP = "1"
+
+   The above setting will noticeably increase the size of your image.
+
+If you've already built a stripped image, you can generate debug
+packages (xxx-dbg) which you can manually install as needed.
+
+To generate debug info for packages, you can add dbg-pkgs to
+:term:`EXTRA_IMAGE_FEATURES` in local.conf. For example::
+
+   EXTRA_IMAGE_FEATURES = "debug-tweaks tools-profile dbg-pkgs"
+
+Additionally, in order to generate the right type of debuginfo, we also need to
+set :term:`PACKAGE_DEBUG_SPLIT_STYLE` in the ``local.conf`` file::
+
+   PACKAGE_DEBUG_SPLIT_STYLE = 'debug-file-directory'