[PATCH v5 3/3] PM: domains: Add "performance" column to debug summary

Dmitry Osipenko
2021-01-20T22:12:28Z

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>
---
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 25b346bb2d97..40b72b1d8e8f 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -2955,7 +2955,15 @@ 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,
@@ -2983,7 +2991,7 @@ 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
@@ -2991,6 +2999,8 @@ 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, ", ");
@@ -3005,6 +3015,7 @@ 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);
}

@@ -3020,9 +3031,9 @@ 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)
--
2.29.2