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-rw-r--r--kernel/watchdog.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index e8b19db9c14a..452e4ed507e5 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -654,6 +654,12 @@ static struct smp_hotplug_thread watchdog_threads = {
/*
* park all watchdog threads that are specified in 'watchdog_cpumask'
+ *
+ * This function returns an error if kthread_park() of a watchdog thread
+ * fails. In this situation, the watchdog threads of some CPUs can already
+ * be parked and the watchdog threads of other CPUs can still be runnable.
+ * Callers are expected to handle this special condition as appropriate in
+ * their context.
*/
static int watchdog_park_threads(void)
{
@@ -665,10 +671,6 @@ static int watchdog_park_threads(void)
if (ret)
break;
}
- if (ret) {
- for_each_watchdog_cpu(cpu)
- kthread_unpark(per_cpu(softlockup_watchdog, cpu));
- }
put_online_cpus();
return ret;