PM: domains: Add "performance" column to debug summary

Add "performance" column to debug summary which shows performance state
of all power domains and theirs devices.

Tested-by: Peter Geis <pgwipeout@gmail.com>
Tested-by: Nicolas Chauvet <kwizart@gmail.com>
Tested-by: Matt Merhar <mattmerhar@protonmail.com>
[tested on NVIDIA Tegra20/30/124 SoCs]
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index c615abf..50211a4 100644 (file)
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -2985,7 +2985,15 @@ 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,
@@ -3013,7 +3021,7 @@ 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
@@ -3021,6 +3029,8 @@ 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, ", ");
@@ -3035,6 +3045,7 @@ 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);
        }
 
@@ -3050,9 +3061,9 @@ 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)