Now that genpd supports performance states, add this additional
attribute as part of the power domains debugfs entry, to display
the current performance state for the Power domain.
Suggested-by: David Collins <collinsd@xxxxxxxxxxxxxx>
Signed-off-by: Rajendra Nayak <rnayak@xxxxxxxxxxxxxx>
---
drivers/base/power/domain.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index ffeb6ea8d6eb..a02d793c8275 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -2802,6 +2802,19 @@ static int genpd_devices_show(struct seq_file *s, void *data)
return ret;
}
+static int genpd_perf_state_show(struct seq_file *s, void *data)
+{
+ struct generic_pm_domain *genpd = s->private;
+
+ if (genpd_lock_interruptible(genpd))
+ return -ERESTARTSYS;
+
+ seq_printf(s, "%u\n", genpd->performance_state);
+
+ genpd_unlock(genpd);
+ return 0;
+}
+
#define define_genpd_open_function(name) \
static int genpd_##name##_open(struct inode *inode, struct file *file) \
{ \
@@ -2815,6 +2828,7 @@ define_genpd_open_function(idle_states);
define_genpd_open_function(active_time);
define_genpd_open_function(total_idle_time);
define_genpd_open_function(devices);
+define_genpd_open_function(perf_state);
#define define_genpd_debugfs_fops(name) \
static const struct file_operations genpd_##name##_fops = { \
@@ -2831,6 +2845,7 @@ define_genpd_debugfs_fops(idle_states);
define_genpd_debugfs_fops(active_time);
define_genpd_debugfs_fops(total_idle_time);
define_genpd_debugfs_fops(devices);
+define_genpd_debugfs_fops(perf_state);
static int __init genpd_debug_init(void)
{
@@ -2864,6 +2879,9 @@ static int __init genpd_debug_init(void)
d, genpd, &genpd_total_idle_time_fops);
debugfs_create_file("devices", 0444,
d, genpd, &genpd_devices_fops);
+ if (genpd->set_performance_state)
+ debugfs_create_file("perf_state", 0444,
+ d, genpd, &genpd_perf_state_fops);
}
return 0;
--
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