Re: [FIX PATCH v2] selftests: tracing: Fix to unmount tracefs for recovering environment

[Steven Rostedt]

On Tue, 12 Sep 2023 10:10:39 +0900
"Masami Hiramatsu (Google)" <mhiramat@xxxxxxxxxx> wrote:

> From: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>
> 
> Fix to unmount the tracefs if the ftracetest mounted it for recovering
> system environment. If the tracefs is already mounted, this does nothing.
> 
> Suggested-by: Mark Brown <broonie@xxxxxxxxxx>
> Link: https://lore.kernel.org/all/29fce076-746c-4650-8358-b4e0fa215cf7@xxxxxxxxxxxxx/
> Fixes: cbd965bde74c ("ftrace/selftests: Return the skip code when tracing directory not configured in kernel")
> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>
> ---
>  Changes in v2:
>    - use -n option explictly for testing the string is non-zero.
> ---
>  tool

Reviewed-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>

-- Steve