tl_pkg_mask
powerpc_topology[i++] = SDTL_INIT(tl_pkg_mask, powerpc_shared_proc_flags, PKG);
SDTL_INIT(tl_pkg_mask, NULL, PKG),
SDTL_INIT(tl_pkg_mask, x86_sched_itmt_flags, PKG),
extern const struct cpumask *tl_pkg_mask(struct sched_domain_topology_level *tl, int cpu);
SDTL_INIT(tl_pkg_mask, NULL, PKG),