[PATCH] PM / Sleep: Print active wakeup sources when reading wakeup events blocked
From: Xing Wei <hidden>
Date: 2016-12-07 11:37:50
Subsystem:
driver core, kobjects, debugfs and sysfs, hibernation (aka software suspend, aka swsusp), power management core, suspend to ram, the rest · Maintainers:
Greg Kroah-Hartman, "Rafael J. Wysocki", Danilo Krummrich, Linus Torvalds
From: xing wei <redacted> 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 <redacted> --- drivers/base/power/wakeup.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c
index 62e4de2..bf9ba26 100644
--- a/drivers/base/power/wakeup.c
+++ b/drivers/base/power/wakeup.c@@ -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);
--
1.9.1