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-rw-r--r--kernel/cpu.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 4e11e91010e1..1b6302ecbabe 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -330,6 +330,13 @@ void lockdep_assert_cpus_held(void)
percpu_rwsem_assert_held(&cpu_hotplug_lock);
}
+#ifdef CONFIG_LOCKDEP
+int lockdep_is_cpus_held(void)
+{
+ return percpu_rwsem_is_held(&cpu_hotplug_lock);
+}
+#endif
+
static void lockdep_acquire_cpus_lock(void)
{
rwsem_acquire(&cpu_hotplug_lock.dep_map, 0, 0, _THIS_IP_);