PM / Sleep: Print active wakeup sources when reading wakeup events blocked

If there are any wakeup events being processed, read operation on /sys/power/wakeup_count will be blocked, we can print the name of all active wakeup sources to help us find out who will block system enter sleep.

Signed-off-by xing wei <[email protected]>

---
  drivers/base/power/wakeup.c | 6 +++---
  1 file changed, 3 insertions(+), 3 deletions(-)

drivers/base/power/wakeup.c +3 -3

index 62e4de2..bf9ba26 100644
@@ -811,7 +811,7 @@ void pm_print_active_wakeup_sources(void)
  	rcu_read_lock();
  	list_for_each_entry_rcu(ws, &wakeup_sources, entry) {
  		if (ws->active) {
-			pr_info("active wakeup source: %s\n", ws->name);
+			pr_debug("active wakeup source: %s\n", ws->name);
  			active = 1;
  		} else if (!active &&
  			   (!last_activity_ws ||

@@ -822,7 +822,7 @@ void pm_print_active_wakeup_sources(void)
  	}
 
  	if (!active && last_activity_ws)
-		pr_info("last active wakeup source: %s\n",
+		pr_debug("last active wakeup source: %s\n",
  			last_activity_ws->name);
  	rcu_read_unlock();
  }

@@ -905,7 +905,7 @@ bool pm_get_wakeup_count(unsigned int *count, bool block)
  			split_counters(&cnt, &inpr);
  			if (inpr == 0 || signal_pending(current))
  				break;
-
+			pm_print_active_wakeup_sources();
  			schedule();
  		}
  		finish_wait(&wakeup_count_wait_queue, &wait);