RTLA tests are not documented anywhere. Mention both runtime and unit
tests in the README, with instructions on how to run them and a list of
dependencies and required system configuration.

Signed-off-by: Tomas Glozar <tglozar@redhat.com>
---
 tools/tracing/rtla/README.txt | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/tools/tracing/rtla/README.txt b/tools/tracing/rtla/README.txt
index a9faee4dbb3a..8a782cd2c171 100644
--- a/tools/tracing/rtla/README.txt
+++ b/tools/tracing/rtla/README.txt
@@ -42,4 +42,34 @@ For development, we suggest the following steps for compiling rtla:
   $ make
   $ sudo make install
 
+Running tests
+
+RTLA has two test suites: a runtime test suite and a unit test suite.
+
+The runtime test suite is available as "make check" (root required) and has
+the following dependencies, in addition to RTLA build dependencies:
+
+- Perl
+- Test::Harness / TAP::Harness
+- bash
+- coreutils
+- ldd
+- util-linux
+- procps(-ng)
+- bpftool (if rtla is built against libbpf)
+
+as well as the following required system configuration:
+
+- CONFIG_OSNOISE_TRACER=y
+- CONFIG_TIMERLAT_TRACER=y
+- tracefs mounted and readable at /sys/kernel/tracing
+
+The unit test suite is available as "make unit-tests" and has the following
+dependencies:
+
+- libcheck
+
+Unlike the runtime test suite, root is not required to run unit tests, nor is
+a tracefs/osnoise/timerlat-capable kernel required.
+
 For further information, please refer to the rtla man page.
-- 
2.53.0

On Thu, 2026-04-23 at 15:07 +0200, Tomas Glozar wrote:
> RTLA tests are not documented anywhere. Mention both runtime and unit
> tests in the README, with instructions on how to run them and a list of
> dependencies and required system configuration.
> 
> Signed-off-by: Tomas Glozar <tglozar@redhat.com>
> ---
>  tools/tracing/rtla/README.txt | 30 ++++++++++++++++++++++++++++++
>  1 file changed, 30 insertions(+)
> 
> diff --git a/tools/tracing/rtla/README.txt b/tools/tracing/rtla/README.txt
> index a9faee4dbb3a..8a782cd2c171 100644
> --- a/tools/tracing/rtla/README.txt
> +++ b/tools/tracing/rtla/README.txt
> @@ -42,4 +42,34 @@ For development, we suggest the following steps for compiling rtla:
>    $ make
>    $ sudo make install
>  
> +Running tests
> +
> +RTLA has two test suites: a runtime test suite and a unit test suite.
> +
> +The runtime test suite is available as "make check" (root required) and has
> +the following dependencies, in addition to RTLA build dependencies:
> +
> +- Perl
> +- Test::Harness / TAP::Harness
> +- bash
> +- coreutils
> +- ldd
> +- util-linux
> +- procps(-ng)
> +- bpftool (if rtla is built against libbpf)
> +
> +as well as the following required system configuration:
> +
> +- CONFIG_OSNOISE_TRACER=y
> +- CONFIG_TIMERLAT_TRACER=y
> +- tracefs mounted and readable at /sys/kernel/tracing
> +
> +The unit test suite is available as "make unit-tests" and has the following
> +dependencies:
> +
> +- libcheck
> +
> +Unlike the runtime test suite, root is not required to run unit tests, nor is
> +a tracefs/osnoise/timerlat-capable kernel required.
> +

Should add something explaining how to install "Test::Harness /
TAP::Harness" for those who aren't familiar with the Perl ecosystem.

-Crystal