diff options
| -rw-r--r-- | arch/s390/kernel/smp.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 3d838b7bbb3b..7f30d954519b 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -434,10 +434,12 @@ void notrace smp_yield_cpu(int cpu) */ void notrace smp_emergency_stop(void) { - cpumask_t cpumask; + static arch_spinlock_t lock = __ARCH_SPIN_LOCK_UNLOCKED; + static cpumask_t cpumask; u64 end; int cpu; + arch_spin_lock(&lock); cpumask_copy(&cpumask, cpu_online_mask); cpumask_clear_cpu(smp_processor_id(), &cpumask); @@ -458,6 +460,7 @@ void notrace smp_emergency_stop(void) break; cpu_relax(); } + arch_spin_unlock(&lock); } NOKPROBE_SYMBOL(smp_emergency_stop); |