projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| ccb46000 AM |
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 | ||
| 3d18bd74 AM |
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); | |
| 86302820 AM |
17 | |
| 18 | /* | |
| 19 | * Find the highest possible smp_processor_id() | |
| 20 | * | |
| 21 | * Note: if we're prepared to assume that cpu_possible_map never changes | |
| 22 | * (reasonable) then this function should cache its return value. | |
| 23 | */ | |
| 24 | int highest_possible_processor_id(void) | |
| 25 | { | |
| 26 | unsigned int cpu; | |
| 27 | unsigned highest = 0; | |
| 28 | ||
| 29 | for_each_cpu_mask(cpu, cpu_possible_map) | |
| 30 | highest = cpu; | |
| 31 | return highest; | |
| 32 | } | |
| 33 | EXPORT_SYMBOL(highest_possible_processor_id); | |
| 96a9b4d3 AM |
34 | |
| 35 | int __any_online_cpu(const cpumask_t *mask) | |
| 36 | { | |
| 37 | int cpu; | |
| 38 | ||
| 39 | for_each_cpu_mask(cpu, *mask) { | |
| 40 | if (cpu_online(cpu)) | |
| 41 | break; | |
| 42 | } | |
| 43 | return cpu; | |
| 44 | } | |
| 45 | EXPORT_SYMBOL(__any_online_cpu); |