static void pick_cpu(struct schedproc * proc)
{
#ifdef CONFIG_SMP
unsigned cpu, c;
unsigned cpu_load = (unsigned) -1;
if (machine.processors_count == 1) {
proc->cpu = machine.bsp_id;
return;
}
/* schedule sysytem processes only on the boot cpu */
if (is_system_proc(proc)) {
proc->cpu = machine.bsp_id;
return;
}
/* if no other cpu available, try BSP */
cpu = machine.bsp_id;
for (c = 0; c < machine.processors_count; c++) {
/* skip dead cpus */
if (!cpu_is_available(c))
continue;
if (c != machine.bsp_id && cpu_load > cpu_proc[c]) {
cpu_load = cpu_proc[c];
cpu = c;
}
}
proc->cpu = cpu;
cpu_proc[cpu]++;
#else
proc->cpu = 0;
#endif
}
struct cpu_job *__cpu_queue_job(struct cpu_thread *cpu,
const char *name,
void (*func)(void *data), void *data,
bool no_return)
{
struct cpu_job *job;
if (cpu && !cpu_is_available(cpu)) {
prerror("CPU: Tried to queue job on unavailable CPU 0x%04x\n",
cpu->pir);
return NULL;
}
job = zalloc(sizeof(struct cpu_job));
if (!job)
return NULL;
job->func = func;
job->data = data;
job->name = name;
job->complete = false;
job->no_return = no_return;
if (cpu == NULL) {
lock(&global_job_queue_lock);
list_add_tail(&global_job_queue, &job->link);
unlock(&global_job_queue_lock);
} else if (cpu != this_cpu()) {
lock(&cpu->job_lock);
list_add_tail(&cpu->job_queue, &job->link);
unlock(&cpu->job_lock);
} else {
func(data);
job->complete = true;
}
/* XXX Add poking of CPU with interrupt */
return job;
}
