#include <linux/smp.h>
  #include <linux/module.h>
  
  static void __wbinvd(void *dummy)
  {
  	wbinvd();
  }
  
  void wbinvd_on_cpu(int cpu)
  {
  	smp_call_function_single(cpu, __wbinvd, NULL, 1);
  }
  EXPORT_SYMBOL(wbinvd_on_cpu);
  
  int wbinvd_on_all_cpus(void)
  {
  	return on_each_cpu(__wbinvd, NULL, 1);
  }
  EXPORT_SYMBOL(wbinvd_on_all_cpus);