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PM / domains: Add perf_state attribute to genpd debugfs

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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@codeaurora.org>
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Rajendra Nayak 2018-05-30 15:15:17 +05:30 committed by Rafael J. Wysocki
parent 63ce228e61
commit e89128124c
1 changed files with 18 additions and 0 deletions
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18
drivers/base/power/domain.c
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@ -2713,6 +2713,19 @@ 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) \
{ \
@ -2726,6 +2739,7 @@ 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 = { \
@ -2742,6 +2756,7 @@ 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)
{
@ -2775,6 +2790,9 @@ 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;