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); 38