linux-kernel - Re: [PATCH RESEND v3 2/5] PM: domains: Add the domain HW-managed mode to the summary

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Date:   Fri, 3 Nov 2023 12:47:17 -0700
From:   Bjorn Andersson <andersson@...nel.org>
To:     Abel Vesa <abel.vesa@...aro.org>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Kevin Hilman <khilman@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Pavel Machek <pavel@....cz>, Len Brown <len.brown@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Stanimir Varbanov <stanimir.k.varbanov@...il.com>,
        Vikash Garodia <quic_vgarodia@...cinc.com>,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Taniya Das <tdas@....qualcomm.com>, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-media@...r.kernel.org,
        Taniya Das <quic_tdas@...cinc.com>
Subject: Re: [PATCH RESEND v3 2/5] PM: domains: Add the domain HW-managed
 mode to the summary

On Wed, Nov 01, 2023 at 11:04:08AM +0200, Abel Vesa wrote:
> Now that genpd supports dynamically switching the control for an
> attached device between hardware- and software-mode,  let's add this
> information to the genpd summary in debugfs.
> 
> Suggested-by: Taniya Das <quic_tdas@...cinc.com>
> Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
> Reviewed-by: Ulf Hansson <ulf.hansson@...aro.org>

Reviewed-by: Bjorn Andersson <andersson@...nel.org>

Regards,
Bjorn

> ---
>  drivers/base/power/domain.c | 15 +++++++++++++--
>  1 file changed, 13 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
> index 3fb1a234c7f2..7044271ec93b 100644
> --- a/drivers/base/power/domain.c
> +++ b/drivers/base/power/domain.c
> @@ -3181,6 +3181,15 @@ static void rtpm_status_str(struct seq_file *s, struct device *dev)
>  	seq_printf(s, "%-25s  ", p);
>  }
>  
> +static void mode_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_printf(s, "%20s", gpd_data->hw_mode ? "HW" : "SW");
> +}
> +
>  static void perf_status_str(struct seq_file *s, struct device *dev)
>  {
>  	struct generic_pm_domain_data *gpd_data;
> @@ -3239,6 +3248,7 @@ 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);
> +		mode_status_str(s, pm_data->dev);
>  		kfree(kobj_path);
>  	}
>  
> @@ -3255,8 +3265,9 @@ static int summary_show(struct seq_file *s, void *data)
>  	int ret = 0;
>  
>  	seq_puts(s, "domain                          status          children                           performance\n");
> -	seq_puts(s, "    /device                                             runtime status\n");
> -	seq_puts(s, "----------------------------------------------------------------------------------------------\n");
> +	seq_puts(s, "    /device                                             runtime status                           managed by\n");
> +	seq_puts(s, "------------------------------------------------------------------------------------------------------------\n");
> +
>  
>  	ret = mutex_lock_interruptible(&gpd_list_lock);
>  	if (ret)
> 
> -- 
> 2.34.1
>