linux-kernel - [PATCH tip/core/rcu 7/8] torture: Make waketorture kill test if no hotpluggable CPUs

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Message-Id: <1466029708-11359-7-git-send-email-paulmck@linux.vnet.ibm.com>
Date:	Wed, 15 Jun 2016 15:28:27 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	mingo@...nel.org, jiangshanlai@...il.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
	josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
	rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
	dvhart@...ux.intel.com, fweisbec@...il.com, oleg@...hat.com,
	bobby.prani@...il.com,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: [PATCH tip/core/rcu 7/8] torture: Make waketorture kill test if no hotpluggable CPUs

This commit shuts down the kernel if a shutdown time was specified and
if there were no hotpluggable CPUs.

Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
---
 kernel/rcu/waketorture.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/kernel/rcu/waketorture.c b/kernel/rcu/waketorture.c
index 8568688607ac..f9843eb3f7b7 100644
--- a/kernel/rcu/waketorture.c
+++ b/kernel/rcu/waketorture.c
@@ -248,9 +248,15 @@ static int wake_torture_onoff(void *args)
 		if (cpu_is_hotpluggable(cpu))
 			onoff_cpu = cpu;
 	}
-	pr_alert("%s" TORTURE_FLAG " wake_torture_onoff: onoff_cpu: %d\n", torture_type, onoff_cpu);
-	if (onoff_cpu < 0)
+	if (onoff_cpu < 0) {
 		VERBOSE_TOROUT_STRING("wake_torture_onoff: no hotpluggable CPUs!");
+		if (shutdown_secs > 0) {
+			VERBOSE_TOROUT_STRING("wake_torture_onoff: Shutting down");
+			kernel_power_off();
+			VERBOSE_TOROUT_STRING("wake_torture_onoff: Survived kernel_power_off()?");
+		}
+	}
+	pr_alert("%s" TORTURE_FLAG " wake_torture_onoff: onoff_cpu: %d\n", torture_type, onoff_cpu);
 	while (!torture_must_stop() && onoff_cpu >= 0) {
 		if (!torture_offline(onoff_cpu,
 				    &n_offline_attempts, &n_offline_successes,
-- 
2.5.2