From: Todd Brandt <todd.e.brandt@linux.intel.com>
Date: Thu, 23 Aug 2018 01:37:11 +0000 (-0700)
Subject: PM / sleep: Show freezing tasks that caused a suspend abort
X-Git-Tag: v5.15~7804^2~2^3~12
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8412dbd642585107e29b20920876de98e7df5819;p=platform%2Fkernel%2Flinux-starfive.git

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
--- 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)