Re: [PATCH] selftests/ftrace: mark irqsoff_tracer.tc test as unresolved if the test module does not exist

From: Masami Hiramatsu
Date: Thu May 07 2020 - 04:50:56 EST


On Tue, 5 May 2020 18:14:45 +0800
Po-Hsu Lin <po-hsu.lin@xxxxxxxxxxxxx> wrote:

> The UNRESOLVED state is much more apporiate than the UNSUPPORTED state
> for the absence of the test module, as it matches "test was set up
> incorrectly" situation in the README file.
>
> A possible scenario is that the function was enabled (supported by the
> kernel) but the module was not installed properly, in this case we
> cannot call this as UNSUPPORTED.
>
> This change also make it consistent with other module-related tests
> in ftrace.
>
> Signed-off-by: Po-Hsu Lin <po-hsu.lin@xxxxxxxxxxxxx>

Looks good to me.

Acked-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>

Thanks!

> ---
> .../testing/selftests/ftrace/test.d/preemptirq/irqsoff_tracer.tc | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/tools/testing/selftests/ftrace/test.d/preemptirq/irqsoff_tracer.tc b/tools/testing/selftests/ftrace/test.d/preemptirq/irqsoff_tracer.tc
> index cbd1743..2b82c80e 100644
> --- a/tools/testing/selftests/ftrace/test.d/preemptirq/irqsoff_tracer.tc
> +++ b/tools/testing/selftests/ftrace/test.d/preemptirq/irqsoff_tracer.tc
> @@ -17,7 +17,14 @@ unsup() { #msg
> exit_unsupported
> }
>
> -modprobe $MOD || unsup "$MOD module not available"
> +unres() { #msg
> + reset_tracer
> + rmmod $MOD || true
> + echo $1
> + exit_unresolved
> +}
> +
> +modprobe $MOD || unres "$MOD module not available"
> rmmod $MOD
>
> grep -q "preemptoff" available_tracers || unsup "preemptoff tracer not enabled"
> --
> 2.7.4


--
Masami Hiramatsu <mhiramat@xxxxxxxxxx>