cpumask.c 565 B

12345678910111213141516171819202122232425262728
  1. #include <linux/kernel.h>
  2. #include <linux/bitops.h>
  3. #include <linux/cpumask.h>
  4. #include <linux/module.h>
  5. int __first_cpu(const cpumask_t *srcp)
  6. {
  7. return min_t(int, NR_CPUS, find_first_bit(srcp->bits, NR_CPUS));
  8. }
  9. EXPORT_SYMBOL(__first_cpu);
  10. int __next_cpu(int n, const cpumask_t *srcp)
  11. {
  12. return min_t(int, NR_CPUS, find_next_bit(srcp->bits, NR_CPUS, n+1));
  13. }
  14. EXPORT_SYMBOL(__next_cpu);
  15. int __any_online_cpu(const cpumask_t *mask)
  16. {
  17. int cpu;
  18. for_each_cpu_mask(cpu, *mask) {
  19. if (cpu_online(cpu))
  20. break;
  21. }
  22. return cpu;
  23. }
  24. EXPORT_SYMBOL(__any_online_cpu);