Commit 750db0f5 authored by Boqun Feng's avatar Boqun Feng Committed by Paul E. McKenney
Browse files

torture: Stop onoff task if there is only one cpu 



If the whole system has only one cpu, that cpu won't be able to be
offlined, so there is no need onoff task is stil running.

Signed-off-by: default avatarBoqun Feng <boqun.feng@gmail.com>
Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent 682ed706

kernel/torture.c

+8 −0
Original line number Diff line number Diff line
@@ -194,6 +194,12 @@ torture_onoff(void *arg) 
	for_each_online_cpu(cpu)

		maxcpu = cpu;

	WARN_ON(maxcpu < 0);



	if (maxcpu == 0) {

		VERBOSE_TOROUT_STRING("Only one CPU, so CPU-hotplug testing is disabled");

		goto stop;

	}



	if (onoff_holdoff > 0) {

		VERBOSE_TOROUT_STRING("torture_onoff begin holdoff");

		schedule_timeout_interruptible(onoff_holdoff);
@@ -209,6 +215,8 @@ torture_onoff(void *arg) 
				       &sum_online, &min_online, &max_online);

		schedule_timeout_interruptible(onoff_interval);

	}



stop:

	torture_kthread_stopping("torture_onoff");

	return 0;

}