NVDIMM_PMU_CPUMASK_ATTR
nd_pmu->pmu.attr_groups[NVDIMM_PMU_CPUMASK_ATTR] = nvdimm_pmu_cpumask_group;
if (nd_pmu->pmu.attr_groups[NVDIMM_PMU_CPUMASK_ATTR])
kfree(nd_pmu->pmu.attr_groups[NVDIMM_PMU_CPUMASK_ATTR]->attrs);
kfree(nd_pmu->pmu.attr_groups[NVDIMM_PMU_CPUMASK_ATTR]);