PM / sleep: Show freezing tasks that caused a suspend abort

For debug purposes it would be nice to see which tasks
caused a suspend abort, i.e. which tasks were still
in the process of freezing when a wakeup event occurred.
This patch adds the info to pm_debug_messages.

Signed-off-by: Todd Brandt <todd.e.brandt@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/kernel/power/process.c b/kernel/power/process.c
index 7381d49..4b6a54d 100644 (file)
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -96,7 +96,7 @@ static int try_to_freeze_tasks(bool user_only)
                if (wq_busy)
                        show_workqueue_state();
 
-               if (!wakeup) {
+               if (!wakeup || pm_debug_messages_on) {
                        read_lock(&tasklist_lock);
                        for_each_process_thread(g, p) {
                                if (p != current && !freezer_should_skip(p)