root/lib/cpumask.c

DEFINITIONS

1. __first_cpu
2. __next_cpu
3. __next_cpu_nr
4. __any_online_cpu

#include <linux/kernel.h>
#include <linux/bitops.h>
#include <linux/cpumask.h>
#include <linux/module.h>

int __first_cpu(const cpumask_t *srcp)
{
        return min_t(int, NR_CPUS, find_first_bit(srcp->bits, NR_CPUS));
}
EXPORT_SYMBOL(__first_cpu);

int __next_cpu(int n, const cpumask_t *srcp)
{
        return min_t(int, NR_CPUS, find_next_bit(srcp->bits, NR_CPUS, n+1));
}
EXPORT_SYMBOL(__next_cpu);

#if NR_CPUS > 64
int __next_cpu_nr(int n, const cpumask_t *srcp)
{
        return min_t(int, nr_cpu_ids,
                                find_next_bit(srcp->bits, nr_cpu_ids, n+1));
}
EXPORT_SYMBOL(__next_cpu_nr);
#endif

int __any_online_cpu(const cpumask_t *mask)
{
        int cpu;

        for_each_cpu_mask(cpu, *mask) {
                if (cpu_online(cpu))
                        break;
        }
        return cpu;
}
EXPORT_SYMBOL(__any_online_cpu);