linux-kernel - Re: [PATCH 1/3] rtla/osnoise: Use pretty formatting only on interactive tty

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Date: Mon, 10 Jun 2024 10:48:02 -0300
From: "Luis Claudio R. Goncalves" <lgoncalv@...hat.com>
To: Daniel Bristot de Oliveira <bristot@...nel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	John Kacur <jkacur@...hat.com>, linux-trace-kernel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] rtla/osnoise: Use pretty formatting only on
 interactive tty

This is a single patch, selected out of a test series. I messed up the
subject giving the impression that more patches were to come.

Sorry for any inconvenience,
Luis

On Mon, Jun 10, 2024 at 10:25:28AM -0300, Luis Claudio R. Goncalves wrote:
> osnoise top performs background/font color formatting that could make
> the text output confusing if not on a terminal. Use the changes from
> commit f5c0cdad6684a ("rtla/timerlat: Use pretty formatting only on
> interactive tty") as an inspiration to fix this problem.
> 
> Apply the formatting only if running on a tty, and not in quiet mode.
> 
> Suggested-by: Daniel Bristot de Oliveira <bristot@...nel.org>
> Reviewed-by: John Kacur <jkacur@...hat.com>
> Reviewed-by: Clark Williams <williams@...hat.com>
> Signed-off-by: Luis Claudio R. Goncalves <lgoncalv@...hat.com>
> ---
>  tools/tracing/rtla/src/osnoise_top.c |   19 +++++++++++++++----
>  1 file changed, 15 insertions(+), 4 deletions(-)
> 
> diff --git a/tools/tracing/rtla/src/osnoise_top.c b/tools/tracing/rtla/src/osnoise_top.c
> index 07ba55d4ec06f..d539fade99d48 100644
> --- a/tools/tracing/rtla/src/osnoise_top.c
> +++ b/tools/tracing/rtla/src/osnoise_top.c
> @@ -42,6 +42,7 @@ struct osnoise_top_params {
>  	int			hk_cpus;
>  	int			warmup;
>  	int			buffer_size;
> +	int			pretty_output;
>  	cpu_set_t		hk_cpu_set;
>  	struct sched_attr	sched_param;
>  	struct trace_events	*events;
> @@ -163,7 +164,9 @@ static void osnoise_top_header(struct osnoise_tool *top)
>  
>  	get_duration(top->start_time, duration, sizeof(duration));
>  
> -	trace_seq_printf(s, "\033[2;37;40m");
> +	if (params->pretty_output)
> +		trace_seq_printf(s, "\033[2;37;40m");
> +
>  	trace_seq_printf(s, "                                          ");
>  
>  	if (params->mode == MODE_OSNOISE) {
> @@ -174,12 +177,16 @@ static void osnoise_top_header(struct osnoise_tool *top)
>  	}
>  
>  	trace_seq_printf(s, "                                   ");
> -	trace_seq_printf(s, "\033[0;0;0m");
> +
> +	if (params->pretty_output)
> +		trace_seq_printf(s, "\033[0;0;0m");
>  	trace_seq_printf(s, "\n");
>  
>  	trace_seq_printf(s, "duration: %9s | time is in us\n", duration);
>  
> -	trace_seq_printf(s, "\033[2;30;47m");
> +	if (params->pretty_output)
> +		trace_seq_printf(s, "\033[2;30;47m");
> +
>  	trace_seq_printf(s, "CPU Period       Runtime ");
>  	trace_seq_printf(s, "       Noise ");
>  	trace_seq_printf(s, " %% CPU Aval ");
> @@ -192,7 +199,8 @@ static void osnoise_top_header(struct osnoise_tool *top)
>  	trace_seq_printf(s, "          IRQ      Softirq       Thread");
>  
>  eol:
> -	trace_seq_printf(s, "\033[0;0;0m");
> +	if (params->pretty_output)
> +		trace_seq_printf(s, "\033[0;0;0m");
>  	trace_seq_printf(s, "\n");
>  }
>  
> @@ -619,6 +627,9 @@ osnoise_top_apply_config(struct osnoise_tool *tool, struct osnoise_top_params *p
>  		auto_house_keeping(&params->monitored_cpus);
>  	}
>  
> +	if (isatty(1) && !params->quiet)
> +		params->pretty_output = 1;
> +
>  	return 0;
>  
>  out_err:
> -- 
> 2.45.2
> 
> 
---end quoted text---