void mali_core_scaling_update(struct mali_gpu_utilization_data *data)
{
/*
* This function implements a very trivial PP core scaling algorithm.
*
* It is _NOT_ of production quality.
* The only intention behind this algorithm is to exercise and test the
* core scaling functionality of the driver.
* It is _NOT_ tuned for neither power saving nor performance!
*
* Other metrics than PP utilization need to be considered as well
* in order to make a good core scaling algorithm.
*/
MALI_DEBUG_PRINT(3, ("Utilization: (%3d, %3d, %3d), cores enabled: %d/%d\n", data->utilization_gpu, data->utilization_gp, data->utilization_pp, num_cores_enabled, num_cores_total));
/* NOTE: this function is normally called directly from the utilization callback which is in
* timer context. */
if (PERCENT_OF(90, 256) < data->utilization_pp) {
enable_max_num_cores();
} else if (PERCENT_OF(50, 256) < data->utilization_pp) {
enable_one_core();
} else if (PERCENT_OF(40, 256) < data->utilization_pp) {
/* do nothing */
} else if (PERCENT_OF(0, 256) < data->utilization_pp) {
disable_one_core();
} else {
/* do nothing */
}
}
void mali_pp_scaling_update(struct mali_gpu_utilization_data *data)
{
int ret = 0;
if (mali_threshold[2] < data->utilization_pp)
ret = enable_max_num_cores();
else if (mali_threshold[1]< data->utilization_pp)
ret = enable_one_core();
else if (0 < data->utilization_pp)
ret = disable_one_core();
if (ret == 1)
schedule_work(&wq_work);
}
void mali_pp_fs_scaling_update(struct mali_gpu_utilization_data *data)
{
#ifndef CONFIG_MALI_DVFS
int ret = 0;
int pp_change_flag = 0;
u32 next_idx = 0;
#if LOG_MALI_SCALING
u32 last_pp = num_cores_enabled;
#endif
mali_decide_next_status(data, &next_idx, &pp_change_flag);
if (pp_change_flag == 1)
ret = enable_pp_cores(pmali_plat->sc_mpp);
else if (pp_change_flag == 2)
ret = enable_one_core();
else if (pp_change_flag == -1) {
ret = disable_one_core();
}
#if LOG_MALI_SCALING
if (pp_change_flag || (next_idx != currentStep))
trace_utilization(data, currentStep, next_idx, last_pp, num_cores_enabled);
#endif
if (next_idx != currentStep) {
ret = 1;
currentStep = next_idx;
}
if (ret == 1)
schedule_work(&wq_work);
#ifdef CONFIG_MALI400_PROFILING
else
_mali_osk_profiling_add_event(MALI_PROFILING_EVENT_TYPE_SINGLE |
MALI_PROFILING_EVENT_CHANNEL_GPU |
MALI_PROFILING_EVENT_REASON_SINGLE_GPU_FREQ_VOLT_CHANGE,
get_current_frequency(),
0, 0, 0, 0);
#endif
#endif
}