Re: [PATCH] rtla: Document tests in README

[Crystal Wood <crwood@redhat.com>]

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