linux-kernel - Re: [PATCH 1/2] tracing/selftests: Support log output when generating KTAP output

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Message-ID: <0beb942b-e16b-4006-ab24-bb11eeb8ee3e@collabora.com>
Date: Sun, 7 Apr 2024 02:03:52 +0500
From: Muhammad Usama Anjum <usama.anjum@...labora.com>
To: Mark Brown <broonie@...nel.org>, Steven Rostedt <rostedt@...dmis.org>,
 Masami Hiramatsu <mhiramat@...nel.org>,
 Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
 Shuah Khan <shuah@...nel.org>
Cc: Muhammad Usama Anjum <usama.anjum@...labora.com>,
 Mark Rutland <mark.rutland@....com>, Aishwarya TCV <aishwarya.tcv@....com>,
 linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
 linux-kselftest@...r.kernel.org
Subject: Re: [PATCH 1/2] tracing/selftests: Support log output when generating
 KTAP output

On 3/25/24 9:15 PM, Mark Brown wrote:
> When -v is specified ftracetest will dump logs of test execution to the
> console which if -K is also specified for KTAP output will result in
> output that is not properly KTAP formatted. All that's required for KTAP
> formatting is that anything we log have a '#' at the start of the line so
> we can improve things by washing the output through a simple read loop.
> This will help automated parsers when verbose mode is enabled.
> 
> Signed-off-by: Mark Brown <broonie@...nel.org>
Reviewed-by: Muhammad Usama Anjum <usama.anjum@...labora.com>

> ---
>  tools/testing/selftests/ftrace/ftracetest | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/ftrace/ftracetest b/tools/testing/selftests/ftrace/ftracetest
> index 25d4e0fca385..cce72f8b03dc 100755
> --- a/tools/testing/selftests/ftrace/ftracetest
> +++ b/tools/testing/selftests/ftrace/ftracetest
> @@ -255,7 +255,13 @@ prlog() { # messages
>    [ "$LOG_FILE" ] && printf "$*$newline" | strip_esc >> $LOG_FILE
>  }
>  catlog() { #file
> -  cat $1
> +  if [ "${KTAP}" = "1" ]; then
> +    cat $1 | while read line ; do
> +      echo "# $line"
> +    done
> +  else
> +    cat $1
> +  fi
>    [ "$LOG_FILE" ] && cat $1 | strip_esc >> $LOG_FILE
>  }
>  prlog "=== Ftrace unit tests ==="
> 

-- 
BR,
Muhammad Usama Anjum