[lttng-docs.git] / contents / using-lttng / instrumenting / instrumenting-linux-kernel / instrumenting-linux-kernel-itself / intro.md

---
id: instrumenting-linux-kernel-itself
---

This section explains strictly how to add custom LTTng
instrumentation to the Linux kernel. It does not explain how the
macros actually work and the internal mechanics of the tracer.

You should have a Linux kernel source code tree to work with.
Throughout this section, all file paths are relative to the root of
this tree unless otherwise stated.

You need a copy of the LTTng-modules Git repository:

<pre class="term">
git clone git://git.lttng.org/lttng-modules.git
</pre>

The steps to add custom LTTng instrumentation to a Linux kernel
involves defining and using the mainline `TRACE_EVENT()` tracepoints
first, then writing and using the LTTng adaptation layer.
Commit	Line	Data
5e0cbfb0 PP	1	---
	2	id: instrumenting-linux-kernel-itself
	3	---
	4
	5	This section explains strictly how to add custom LTTng
	6	instrumentation to the Linux kernel. It does not explain how the
	7	macros actually work and the internal mechanics of the tracer.
	8
	9	You should have a Linux kernel source code tree to work with.
	10	Throughout this section, all file paths are relative to the root of
	11	this tree unless otherwise stated.
	12
47bfcb75	13	You need a copy of the LTTng-modules Git repository:
5e0cbfb0 PP	14
	15	<pre class="term">
	16	git clone git://git.lttng.org/lttng-modules.git
	17	</pre>
	18
	19	The steps to add custom LTTng instrumentation to a Linux kernel
	20	involves defining and using the mainline `TRACE_EVENT()` tracepoints
	21	first, then writing and using the LTTng adaptation layer.