linux-kernel - Re: [PATCH v3 2/3] PM: domains: Add "performance" column to debug summary

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Message-ID: <20210118073118.lwf4q2fcsx3n7n7c@vireshk-i7>
Date:   Mon, 18 Jan 2021 13:01:18 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Peter Geis <pgwipeout@...il.com>,
        Nicolas Chauvet <kwizart@...il.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Kevin Hilman <khilman@...nel.org>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        Viresh Kumar <vireshk@...nel.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Matt Merhar <mattmerhar@...tonmail.com>,
        linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH v3 2/3] PM: domains: Add "performance" column to debug
 summary

On 18-01-21, 04:13, Dmitry Osipenko wrote:
> Add "performance" column to debug summary which shows performance state
> of all power domains and theirs devices.
> 
> Tested-by: Peter Geis <pgwipeout@...il.com>
> Tested-by: Nicolas Chauvet <kwizart@...il.com>
> Tested-by: Matt Merhar <mattmerhar@...tonmail.com>
> Reviewed-by: Ulf Hansson <ulf.hansson@...aro.org>
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  drivers/base/power/domain.c | 19 +++++++++++++++----
>  1 file changed, 15 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
> index a3e1bfc233d4..2ab77aa516eb 100644
> --- a/drivers/base/power/domain.c
> +++ b/drivers/base/power/domain.c
> @@ -2951,7 +2951,15 @@ static void rtpm_status_str(struct seq_file *s, struct device *dev)
>  	else
>  		WARN_ON(1);
>  
> -	seq_puts(s, p);
> +	seq_printf(s, "%-25s  ", p);
> +}
> +
> +static void perf_status_str(struct seq_file *s, struct device *dev)
> +{
> +	struct generic_pm_domain_data *gpd_data;
> +
> +	gpd_data = to_gpd_data(dev->power.subsys_data->domain_data);
> +	seq_put_decimal_ull(s, "", gpd_data->performance_state);
>  }
>  
>  static int genpd_summary_one(struct seq_file *s,
> @@ -2979,7 +2987,7 @@ static int genpd_summary_one(struct seq_file *s,
>  	else
>  		snprintf(state, sizeof(state), "%s",
>  			 status_lookup[genpd->status]);
> -	seq_printf(s, "%-30s  %-15s ", genpd->name, state);
> +	seq_printf(s, "%-30s  %-50s %u", genpd->name, state, genpd->performance_state);
>  
>  	/*
>  	 * Modifications on the list require holding locks on both
> @@ -2987,6 +2995,8 @@ static int genpd_summary_one(struct seq_file *s,
>  	 * Also genpd->name is immutable.
>  	 */
>  	list_for_each_entry(link, &genpd->parent_links, parent_node) {
> +		if (list_is_first(&link->parent_node, &genpd->parent_links))
> +			seq_printf(s, "\n%48s", " ");
>  		seq_printf(s, "%s", link->child->name);
>  		if (!list_is_last(&link->parent_node, &genpd->parent_links))
>  			seq_puts(s, ", ");
> @@ -3001,6 +3011,7 @@ static int genpd_summary_one(struct seq_file *s,
>  
>  		seq_printf(s, "\n    %-50s  ", kobj_path);
>  		rtpm_status_str(s, pm_data->dev);
> +		perf_status_str(s, pm_data->dev);
>  		kfree(kobj_path);
>  	}
>  
> @@ -3016,9 +3027,9 @@ static int summary_show(struct seq_file *s, void *data)
>  	struct generic_pm_domain *genpd;
>  	int ret = 0;
>  
> -	seq_puts(s, "domain                          status          children\n");
> +	seq_puts(s, "domain                          status          children                           performance\n");
>  	seq_puts(s, "    /device                                             runtime status\n");
> -	seq_puts(s, "----------------------------------------------------------------------\n");
> +	seq_puts(s, "----------------------------------------------------------------------------------------------\n");
>  
>  	ret = mutex_lock_interruptible(&gpd_list_lock);
>  	if (ret)

Reviewed-by: Viresh Kumar <viresh.kumar@...aro.org>

-- 
viresh