ipi_flush_tlb_range
on_each_cpu_mask(mm_cpumask(vma->vm_mm), ipi_flush_tlb_range, &ta, 1);
on_each_cpu_mask(mm_cpumask(vma->vm_mm), ipi_flush_tlb_range,
on_each_cpu_mask(cmask, ipi_flush_tlb_range, &fd, 1);
on_each_cpu(ipi_flush_tlb_range, &fd, 1);