lib/cpumask.c

   1 #include <linux/kernel.h>
   2 #include <linux/bitops.h>
   3 #include <linux/cpumask.h>
   4 #include <linux/module.h>
   5
   6 int __first_cpu(const cpumask_t *srcp)
   7 {
   8         return min_t(int, NR_CPUS, find_first_bit(srcp->bits, NR_CPUS));
   9 }
  10 EXPORT_SYMBOL(__first_cpu);
  11
  12 int __next_cpu(int n, const cpumask_t *srcp)
  13 {
  14         return min_t(int, NR_CPUS, find_next_bit(srcp->bits, NR_CPUS, n+1));
  15 }
  16 EXPORT_SYMBOL(__next_cpu);
  17
  18 #if NR_CPUS > 64
  19 int __next_cpu_nr(int n, const cpumask_t *srcp)
  20 {
  21         return min_t(int, nr_cpu_ids,
  22                                 find_next_bit(srcp->bits, nr_cpu_ids, n+1));
  23 }
  24 EXPORT_SYMBOL(__next_cpu_nr);
  25 #endif
  26
  27 int __any_online_cpu(const cpumask_t *mask)
  28 {
  29         int cpu;
  30
  31         for_each_cpu_mask(cpu, *mask) {
  32                 if (cpu_online(cpu))
  33                         break;
  34         }
  35         return cpu;
  36 }
  37 EXPORT_SYMBOL(__any_online_cpu);