linux-kernel - Re: [BUGFIX PATCH v4 2/4] selftests/ftrace: Fix ftrace test cases to check unsupported

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Date:   Tue, 26 Nov 2019 12:49:01 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Masami Hiramatsu <mhiramat@...nel.org>
Cc:     Shuah Khan <shuah@...nel.org>, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [BUGFIX PATCH v4 2/4] selftests/ftrace: Fix ftrace test cases
 to check unsupported

On Tue, 26 Nov 2019 17:34:24 +0900
Masami Hiramatsu <mhiramat@...nel.org> wrote:

> --- a/tools/testing/selftests/ftrace/test.d/ftrace/func_cpumask.tc
> +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_cpumask.tc
> @@ -15,6 +15,11 @@ if [ $NP -eq 1 ] ;then
>    exit_unresolved
>  fi
>  
> +if ! grep -q function available_tracers ; then
> +  echo "Function trace is not enabled"
> +  exit_unsupported
> +fi
> +
>  ORIG_CPUMASK=`cat tracing_cpumask`

Strange, but the bashism test failed:

++ checkbashisms /work/git-local/linux.git/tools/testing/selftests/ftrace/test.d/ftrace/func_cpumask.tc
possible bashism in /work/git-local/linux.git/tools/testing/selftests/ftrace/test.d/ftrace/func_cpumask.tc line 18 ('function' is useless):
if ! grep -q function available_tracers ; then

Not sure why it did not like that line. Maybe my bashism check got
confused by the key word "function"?

Yep!

By adding quotes around "function" it doesn't complain:

	if ! grep -q "function" available_tracers ; then

May need to add that.

-- Steve