/**
* adjust_speed:
* @iface: struct with the userspace interface
*
* Returns: TRUE/FALSE
*
* increases and decreases speeds
*/
static gboolean adjust_speed(struct userspace_interface *iface)
{
GSList *cpus = (GSList*)iface->cpus;
GSList *it = NULL;
int cpu_load = 0;
for (it = cpus; it != NULL; it = g_slist_next(it)) {
HAL_DEBUG(("checking cpu %d: cpu_core: %d",
GPOINTER_TO_INT(it->data), GPOINTER_TO_INT(it->data)));
if (get_cpu_load(GPOINTER_TO_INT(it->data)) > cpu_load)
cpu_load = get_cpu_load(GPOINTER_TO_INT(it->data));
}
HAL_DEBUG(("cpu_max: %d cpu_high_limit: %d consider_nice: %d",
config.up_threshold, config.cpu_high_limit,
config.consider_nice));
HAL_DEBUG(("Current: %u; current speed: %u MHz",
iface->current_speed, g_a_i(iface->speeds_kHz, iface->current_speed)));
HAL_DEBUG(("CPU load: %d, Previous CPU load %d, cpu_load diff: %d, last_step: %d, demotion: %u",
cpu_load, iface->prev_cpu_load, cpu_load - iface->prev_cpu_load, iface->last_step,
g_a_i(iface->demotion, iface->current_speed)));
/* directly increase speed to maximum if cpu load jumped */
if (config.cpu_high_limit &&
(cpu_load - iface->prev_cpu_load) > config.cpu_high_limit) {
if (iface->current_speed != 0) {
set_speed(iface, 0);
iface->current_speed = 0;
HAL_DEBUG(("jumped to max (%d kHz)",
g_a_i(iface->speeds_kHz, iface->current_speed)));
}
} else if (cpu_load > config.up_threshold && iface->current_speed > 0) {
iface->current_speed = increase_speed(iface);
HAL_DEBUG(("increased to %d kHz", g_a_i(iface->speeds_kHz, iface->current_speed)));
} else if (cpu_load < (int)g_a_i(iface->demotion, iface->current_speed) &&
iface->current_speed < iface->last_step) {
iface->current_speed = decrease_speed(iface);
HAL_DEBUG(("decreased to %d kHz", g_a_i(iface->speeds_kHz, iface->current_speed)));
} else {
HAL_DEBUG(("Speed not changed"));
}
iface->prev_cpu_load = cpu_load;
return TRUE;
}
void stub_decreasespeed(void) {
decrease_speed();
}
