92 static void check_hung_task(struct task_struct *t, unsigned long timeout)  in check_hung_task()  argument
94 	unsigned long switch_count = t->nvcsw + t->nivcsw;  in check_hung_task()
100 	if (unlikely(READ_ONCE(t->__state) & TASK_FROZEN))  in check_hung_task()
111 	if (switch_count != t->last_switch_count) {  in check_hung_task()
112 		t->last_switch_count = switch_count;  in check_hung_task()
113 		t->last_switch_time = jiffies;  in check_hung_task()
116 	if (time_is_after_jiffies(t->last_switch_time + timeout * HZ))  in check_hung_task()
119 	trace_sched_process_hang(t);  in check_hung_task()
135 		       t->comm, t->pid, (jiffies - t->last_switch_time) / HZ);  in check_hung_task()
142 		sched_show_task(t);  in check_hung_task()
159 static bool rcu_lock_break(struct task_struct *g, struct task_struct *t)  in rcu_lock_break()  argument
164 	get_task_struct(t);  in rcu_lock_break()
168 	can_cont = pid_alive(g) && pid_alive(t);  in rcu_lock_break()
169 	put_task_struct(t);  in rcu_lock_break()
184 	struct task_struct *g, *t;  in check_hung_uninterruptible_tasks()  local
196 	for_each_process_thread(g, t) {  in check_hung_uninterruptible_tasks()
202 			if (!rcu_lock_break(g, t))  in check_hung_uninterruptible_tasks()
210 		trace_android_vh_check_uninterrupt_tasks(t, timeout, &need_check);  in check_hung_uninterruptible_tasks()
212 			state = READ_ONCE(t->__state);  in check_hung_uninterruptible_tasks()
216 				check_hung_task(t, timeout);  in check_hung_uninterruptible_tasks()
375 		long t;  in watchdog()  local
380 		t = hung_timeout_jiffies(hung_last_checked, interval);  in watchdog()
381 		if (t <= 0) {  in watchdog()
388 		schedule_timeout_interruptible(t);  in watchdog()