DEFINE_STATIC_PERCPU_RWSEM  213 fs/locks.c     DEFINE_STATIC_PERCPU_RWSEM(file_rwsem);
DEFINE_STATIC_PERCPU_RWSEM  336 kernel/cgroup/cpuset.c DEFINE_STATIC_PERCPU_RWSEM(cpuset_rwsem);
DEFINE_STATIC_PERCPU_RWSEM  288 kernel/cpu.c   DEFINE_STATIC_PERCPU_RWSEM(cpu_hotplug_lock);
DEFINE_STATIC_PERCPU_RWSEM   50 kernel/events/uprobes.c DEFINE_STATIC_PERCPU_RWSEM(dup_mmap_sem);
DEFINE_STATIC_PERCPU_RWSEM   57 mm/memory_hotplug.c DEFINE_STATIC_PERCPU_RWSEM(mem_hotplug_lock);