mips_smp_send_ipi_mask
extern void mips_smp_send_ipi_mask(const struct cpumask *mask,
.send_ipi_mask = mips_smp_send_ipi_mask,
.send_ipi_mask = mips_smp_send_ipi_mask,
mips_smp_send_ipi_mask(cpumask_of(cpu), action);