It's unused.
Signed-off-by: NLi Zefan <lizefan@huawei.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/5135A75F.4070202@huawei.comSigned-off-by: NIngo Molnar <mingo@kernel.org>