From e89128124c28cc9b74ce9e7a605b22dae031fe5d Mon Sep 17 00:00:00 2001 From: Rajendra Nayak Date: Wed, 30 May 2018 15:15:17 +0530 Subject: [PATCH] PM / domains: Add perf_state attribute to genpd debugfs 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 Signed-off-by: Rajendra Nayak Acked-by: Viresh Kumar Acked-by: Ulf Hansson Signed-off-by: Rafael J. Wysocki --- 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 71a1cc79fbaa..166259053f8d 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -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; -- 2.11.0