ipi_flush_tlb_mm
smp_call_function(ipi_flush_tlb_mm, mm, 1);
on_each_cpu_mask(mm_cpumask(mm), ipi_flush_tlb_mm, mm, 1);
on_each_cpu_mask(cmask, ipi_flush_tlb_mm, mm, 1);
on_each_cpu(ipi_flush_tlb_mm, mm, 1);