summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--arch/powerpc/kernel/watchdog.c2
-rw-r--r--kernel/watchdog.c6
2 files changed, 2 insertions, 6 deletions
diff --git a/arch/powerpc/kernel/watchdog.c b/arch/powerpc/kernel/watchdog.c
index 291af79a9826..dfb067764480 100644
--- a/arch/powerpc/kernel/watchdog.c
+++ b/arch/powerpc/kernel/watchdog.c
@@ -359,6 +359,7 @@ void watchdog_nmi_reconfigure(bool run)
{
int cpu;
+ cpus_read_lock();
if (!run) {
for_each_cpu(cpu, &wd_cpus_enabled)
stop_wd_on_cpu(cpu);
@@ -367,6 +368,7 @@ void watchdog_nmi_reconfigure(bool run)
for_each_cpu_and(cpu, cpu_online_mask, &watchdog_cpumask)
start_wd_on_cpu(cpu);
}
+ cpus_read_unlock();
}
/*
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 5eb11960e4a2..f6ef163b72cd 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -664,7 +664,6 @@ static int proc_watchdog_common(int which, struct ctl_table *table, int write,
{
int err, old, *param = table->data;
- cpu_hotplug_disable();
mutex_lock(&watchdog_mutex);
if (!write) {
@@ -681,7 +680,6 @@ static int proc_watchdog_common(int which, struct ctl_table *table, int write,
proc_watchdog_update();
}
mutex_unlock(&watchdog_mutex);
- cpu_hotplug_enable();
return err;
}
@@ -725,7 +723,6 @@ int proc_watchdog_thresh(struct ctl_table *table, int write,
{
int err, old;
- cpu_hotplug_disable();
mutex_lock(&watchdog_mutex);
old = READ_ONCE(watchdog_thresh);
@@ -735,7 +732,6 @@ int proc_watchdog_thresh(struct ctl_table *table, int write,
proc_watchdog_update();
mutex_unlock(&watchdog_mutex);
- cpu_hotplug_enable();
return err;
}
@@ -750,7 +746,6 @@ int proc_watchdog_cpumask(struct ctl_table *table, int write,
{
int err;
- cpu_hotplug_disable();
mutex_lock(&watchdog_mutex);
err = proc_do_large_bitmap(table, write, buffer, lenp, ppos);
@@ -758,7 +753,6 @@ int proc_watchdog_cpumask(struct ctl_table *table, int write,
proc_watchdog_update();
mutex_unlock(&watchdog_mutex);
- cpu_hotplug_enable();
return err;
}
#endif /* CONFIG_SYSCTL */