smp_yield_cpu
extern void smp_yield_cpu(int cpu);
void notrace smp_yield_cpu(int cpu);
smp_yield_cpu(cpu);
EXPORT_SYMBOL_GPL(smp_yield_cpu);
smp_yield_cpu(tcpu_cpu);
smp_yield_cpu(owner - 1);
smp_yield_cpu(owner - 1);
smp_yield_cpu(owner - 1);
smp_yield_cpu(owner - 1);
smp_yield_cpu(owner - 1);
smp_yield_cpu(cpu - 1);