static bool __load_stats_work_func(void)
{
bool up = false;
bool sample = false;
unsigned int cpu = nr_cpu_ids;
switch (load_stats_state) {
case DISABLED:
break;
case IDLE:
sample = true;
break;
case UP:
cpu = cpumask_next_zero(0, cpu_online_mask);
up = true;
sample = true;
break;
case DOWN:
cpu = get_lightest_loaded_cpu_n();
sample = true;
break;
default:
pr_err("%s: invalid cpuquiet runnable governor state %d\n",
__func__, load_stats_state);
break;
}
if (cpu < nr_cpu_ids) {
if (up)
cpuquiet_wake_cpu(cpu);
else
cpuquiet_quiesence_cpu(cpu);
}
return sample;
}
static int governor_set(unsigned int cpu, bool active)
{
int err;
mutex_lock(&userspace_mutex);
if (active)
err = cpuquiet_wake_cpu(cpu, true);
else
err = cpuquiet_quiesence_cpu(cpu, true);
mutex_unlock(&userspace_mutex);
return err;
}
static void runnables_work_func(struct work_struct *work)
{
bool up = false;
bool sample = false;
unsigned int cpu = nr_cpu_ids;
mutex_lock(&runnables_work_lock);
update_runnables_state();
switch (runnables_state) {
case DISABLED:
break;
case IDLE:
sample = true;
break;
case UP:
//cpu = cpumask_next_zero(0, cpu_online_mask);
cpu = best_core_to_turn_up();
up = true;
sample = true;
break;
case DOWN:
cpu = get_lightest_loaded_cpu_n();
sample = true;
break;
default:
pr_err("%s: invalid cpuquiet runnable governor state %d\n",
__func__, runnables_state);
break;
}
if (sample)
queue_delayed_work(runnables_wq, &runnables_work,
msecs_to_jiffies(sample_rate));
if (cpu < nr_cpu_ids) {
if (up)
cpuquiet_wake_cpu(cpu);
else
cpuquiet_quiesence_cpu(cpu);
}
mutex_unlock(&runnables_work_lock);
}
