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Commit 7b776af6 authored Jul 01, 2016 by Roger Lu Committed by Rafael J. Wysocki Jul 02, 2016

PM / suspend: show workqueue state in suspend flow



If freezable workqueue aborts suspend flow, show
workqueue state for debug purpose.

Signed-off-by: Roger Lu <roger.lu@mediatek.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

parent ea00f4f4

kernel/power/process.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -89,6 +89,9 @@ static int try_to_freeze_tasks(bool user_only)
		elapsed_msecs / 1000, elapsed_msecs % 1000,
		todo - wq_busy, wq_busy);

		if (wq_busy)
		show_workqueue_state();

		if (!wakeup) {
		read_lock(&tasklist_lock);
		for_each_process_thread(g, p) {

kernel/workqueue.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -4369,8 +4369,8 @@ static void show_pwq(struct pool_workqueue *pwq)
		/**
		* show_workqueue_state - dump workqueue state
		*
		* Called from a sysrq handler and prints out all busy workqueues and
		* pools.
		* Called from a sysrq handler or try_to_freeze_tasks() and prints out
		* all busy workqueues and pools.
		*/
		void show_workqueue_state(void)
		{