vruntime_op
delta = vruntime_op(sea->vruntime, "-", seb->vruntime) +
vruntime_op(cfs_rqb->zero_vruntime_fi, "-", cfs_rqa->zero_vruntime_fi);
return vruntime_op(se->vruntime, "-", cfs_rq->zero_vruntime);
key = vruntime_op(vruntime, "-", cfs_rq->zero_vruntime);