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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright (c) 2015-2018 Linaro Limited
* Copyright (c) 2021-2022 Nokia
*/
#include <odp_posix_extensions.h>
#include <odp/api/cpumask.h>
#include <odp_debug_internal.h>
#include <odp_global_data.h>
#include <sched.h>
int odp_cpumask_default_worker(odp_cpumask_t *mask, int max_num)
{
int num, cpu, ret;
odp_cpumask_t *worker_cpus = &odp_global_ro.worker_cpus;
num = odp_cpumask_count(worker_cpus);
if (max_num && num > max_num)
num = max_num;
if (mask == NULL)
return num;
odp_cpumask_zero(mask);
/* Allocate down from the highest numbered CPU */
cpu = odp_cpumask_last(worker_cpus);
ret = num;
while (cpu >= 0 && num > 0) {
if (odp_cpumask_isset(worker_cpus, cpu)) {
odp_cpumask_set(mask, cpu);
num--;
}
cpu--;
}
return ret;
}
int odp_cpumask_default_control(odp_cpumask_t *mask, int max_num)
{
int num, cpu, last, ret;
odp_cpumask_t *control_cpus = &odp_global_ro.control_cpus;
num = odp_cpumask_count(control_cpus);
if (max_num && num > max_num)
num = max_num;
if (mask == NULL)
return num;
odp_cpumask_zero(mask);
/* Allocate up from the lowest numbered CPU */
cpu = odp_cpumask_first(control_cpus);
last = odp_cpumask_last(control_cpus);
ret = num;
while (cpu <= last && num > 0) {
if (odp_cpumask_isset(control_cpus, cpu)) {
odp_cpumask_set(mask, cpu);
num--;
}
cpu++;
}
return ret;
}
int odp_cpumask_all_available(odp_cpumask_t *mask)
{
odp_cpumask_copy(mask, &odp_global_ro.all_cpus);
return odp_global_ro.num_cpus_installed;
}
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