/*
* Every sampling_rate, we check, if current idle time is less than 20%
* (default), then we try to increase frequency. Every sampling_rate, we look
* for the lowest frequency which can sustain the load while keeping idle time
* over 30%. If such a frequency exist, we try to decrease to this frequency.
*
* Any frequency increase takes it to the maximum frequency. Frequency reduction
* happens at minimum steps of 5% (default) of current frequency
*/
static void od_check_cpu(int cpu, unsigned int load_freq)
{
struct od_cpu_dbs_info_s *dbs_info = &per_cpu(od_cpu_dbs_info, cpu);
struct cpufreq_policy *policy = dbs_info->cdbs.cur_policy;
struct dbs_data *dbs_data = policy->governor_data;
struct od_dbs_tuners *od_tuners = dbs_data->tuners;
dbs_info->freq_lo = 0;
/* Check for frequency increase */
if (load_freq > od_tuners->up_threshold * policy->cur) {
/* If switching to max speed, apply sampling_down_factor */
if (policy->cur < policy->max)
dbs_info->rate_mult =
od_tuners->sampling_down_factor;
dbs_freq_increase(policy, policy->max);
return;
}
/* Check for frequency decrease */
/* if we cannot reduce the frequency anymore, break out early */
if (policy->cur == policy->min)
return;
/*
* The optimal frequency is the frequency that is the lowest that can
* support the current CPU usage without triggering the up policy. To be
* safe, we focus 10 points under the threshold.
*/
if (load_freq < od_tuners->adj_up_threshold
* policy->cur) {
unsigned int freq_next;
freq_next = load_freq / od_tuners->adj_up_threshold;
/* No longer fully busy, reset rate_mult */
dbs_info->rate_mult = 1;
if (freq_next < policy->min)
freq_next = policy->min;
if (!od_tuners->powersave_bias) {
__cpufreq_driver_target(policy, freq_next,
CPUFREQ_RELATION_L);
return;
}
freq_next = od_ops.powersave_bias_target(policy, freq_next,
CPUFREQ_RELATION_L);
__cpufreq_driver_target(policy, freq_next, CPUFREQ_RELATION_L);
}
}
static int cpufreq_governor_performance(struct cpufreq_policy *policy,
unsigned int event)
{
#ifdef CONFIG_ARCH_HI3XXX
unsigned int utarget = policy->max;
#endif
switch (event) {
case CPUFREQ_GOV_START:
case CPUFREQ_GOV_LIMITS:
pr_debug("setting to %u kHz because of event %u\n",
policy->max, event);
#ifdef CONFIG_ARCH_HI3XXX
if (policy->cpu == 4) {
if (big_is_booting) {
#define BIG_BOOTING_PERFORMANCE_OPERATING_POINT 1708800
utarget = BIG_BOOTING_PERFORMANCE_OPERATING_POINT;
}
}
if ((get_lowbatteryflag() == 1) && (policy->cpu == 4))
utarget = policy->min;
pr_info("%s utarget=%d\n", __func__, utarget);
__cpufreq_driver_target(policy, utarget,
CPUFREQ_RELATION_H);
#else
__cpufreq_driver_target(policy, policy->max,
CPUFREQ_RELATION_H);
#endif
break;
#ifdef CONFIG_ARCH_HI3XXX
case CPUFREQ_GOV_POLICY_EXIT:
set_lowBatteryflag(0);
if (policy->cpu == 4)
big_is_booting = 0;
break;
#endif
default:
break;
}
return 0;
}
/*
* Every sampling_rate, we check, if current idle time is less than 37%
* (default), then we try to increase frequency. Else, we adjust the frequency
* proportional to load.
*/
static void od_check_cpu(int cpu, unsigned int load)
{
struct od_cpu_dbs_info_s *dbs_info = &per_cpu(od_cpu_dbs_info, cpu);
struct cpufreq_policy *policy = dbs_info->cdbs.cur_policy;
struct dbs_data *dbs_data = policy->governor_data;
struct od_dbs_tuners *od_tuners = dbs_data->tuners;
bool boosted;
u64 now;
dbs_info->freq_lo = 0;
now = ktime_to_us(ktime_get());
boosted = now < (last_input_time + get_input_boost_duration());
/* Check for frequency increase */
if (load > od_tuners->up_threshold) {
/* If switching to max speed, apply sampling_down_factor */
if (policy->cur < policy->max)
dbs_info->rate_mult =
od_tuners->sampling_down_factor;
dbs_freq_increase(policy, policy->max);
} else {
/* Calculate the next frequency proportional to load */
unsigned int freq_next, min_f, max_f;
min_f = policy->cpuinfo.min_freq;
max_f = policy->cpuinfo.max_freq;
freq_next = min_f + load * (max_f - min_f) / 100;
/* No longer fully busy, reset rate_mult */
dbs_info->rate_mult = 1;
if (boosted && policy->cur < input_boost_freq
&& freq_next < input_boost_freq)
freq_next = input_boost_freq;
if (!od_tuners->powersave_bias) {
__cpufreq_driver_target(policy, freq_next,
CPUFREQ_RELATION_C);
return;
}
if (boosted && policy->cur <= input_boost_freq)
return;
freq_next = od_ops.powersave_bias_target(policy, freq_next,
CPUFREQ_RELATION_L);
__cpufreq_driver_target(policy, freq_next, CPUFREQ_RELATION_C);
}
}
static void ondemand_suspend(int suspend)
{
struct cpu_dbs_info_s *dbs_info = &per_cpu(od_cpu_dbs_info, smp_processor_id());
if (dbs_enable==0) return;
if (!suspend) { // resume at max speed:
suspended = 0;
__cpufreq_driver_target(dbs_info->cur_policy, dbs_info->cur_policy->max,
CPUFREQ_RELATION_L);
} else {
suspended = 1;
// let's give it a little breathing room
__cpufreq_driver_target(dbs_info->cur_policy, 368640, CPUFREQ_RELATION_L);
}
}
/*
* Every sampling_rate, we check, if current idle time is less than 20%
* (default), then we try to increase frequency. Every sampling_rate *
* sampling_down_factor, we check, if current idle time is more than 80%
* (default), then we try to decrease frequency
*
* Any frequency increase takes it to the maximum frequency. Frequency reduction
* happens at minimum steps of 5% (default) of maximum frequency
*/
static void cs_check_cpu(int cpu, unsigned int load)
{
struct cs_cpu_dbs_info_s *dbs_info = &per_cpu(cs_cpu_dbs_info, cpu);
struct cpufreq_policy *policy = dbs_info->cdbs.cur_policy;
struct dbs_data *dbs_data = policy->governor_data;
struct cs_dbs_tuners *cs_tuners = dbs_data->tuners;
/*
* break out if we 'cannot' reduce the speed as the user might
* want freq_step to be zero
*/
if (cs_tuners->freq_step == 0)
return;
/* Check for frequency increase */
if (load > cs_tuners->up_threshold) {
dbs_info->down_skip = 0;
/* if we are already at full speed then break out early */
if (dbs_info->requested_freq == policy->max)
return;
dbs_info->requested_freq += get_freq_target(cs_tuners, policy);
__cpufreq_driver_target(policy, dbs_info->requested_freq,
CPUFREQ_RELATION_H);
return;
}
/* if sampling_down_factor is active break out early */
if (++dbs_info->down_skip < cs_tuners->sampling_down_factor)
return;
dbs_info->down_skip = 0;
/* Check for frequency decrease */
if (load < cs_tuners->down_threshold) {
/*
* if we cannot reduce the frequency anymore, break out early
*/
if (policy->cur == policy->min)
return;
dbs_info->requested_freq -= get_freq_target(cs_tuners, policy);
__cpufreq_driver_target(policy, dbs_info->requested_freq,
CPUFREQ_RELATION_L);
return;
}
}
static int cpufreq_governor_interactive(struct cpufreq_policy *new_policy,
unsigned int event)
{
int rc;
switch (event) {
case CPUFREQ_GOV_START:
if (!cpu_online(new_policy->cpu))
return -EINVAL;
/*
* Do not register the idle hook and create sysfs
* entries if we have already done so.
*/
if (atomic_inc_return(&active_count) > 1)
return 0;
rc = sysfs_create_group(cpufreq_global_kobject,
&interactive_attr_group);
if (rc)
return rc;
pm_idle_old = pm_idle;
pm_idle = cpufreq_idle;
policy = new_policy;
break;
case CPUFREQ_GOV_STOP:
if (atomic_dec_return(&active_count) > 1)
return 0;
sysfs_remove_group(cpufreq_global_kobject,
&interactive_attr_group);
pm_idle = pm_idle_old;
del_timer(&per_cpu(cpu_timer, new_policy->cpu));
break;
case CPUFREQ_GOV_LIMITS:
if (new_policy->max < new_policy->cur)
__cpufreq_driver_target(new_policy,
new_policy->max, CPUFREQ_RELATION_H);
else if (new_policy->min > new_policy->cur)
__cpufreq_driver_target(new_policy,
new_policy->min, CPUFREQ_RELATION_L);
break;
}
return 0;
}
static unsigned int od_dbs_timer(struct cpu_dbs_info *cdbs,
struct dbs_data *dbs_data, bool modify_all)
{
struct cpufreq_policy *policy = cdbs->shared->policy;
unsigned int cpu = policy->cpu;
struct od_cpu_dbs_info_s *dbs_info = &per_cpu(od_cpu_dbs_info,
cpu);
struct od_dbs_tuners *od_tuners = dbs_data->tuners;
int delay = 0, sample_type = dbs_info->sample_type;
if (!modify_all)
goto max_delay;
/* Common NORMAL_SAMPLE setup */
dbs_info->sample_type = OD_NORMAL_SAMPLE;
if (sample_type == OD_SUB_SAMPLE) {
delay = dbs_info->freq_lo_jiffies;
__cpufreq_driver_target(policy, dbs_info->freq_lo,
CPUFREQ_RELATION_H);
} else {
dbs_check_cpu(dbs_data, cpu);
if (dbs_info->freq_lo) {
/* Setup timer for SUB_SAMPLE */
dbs_info->sample_type = OD_SUB_SAMPLE;
delay = dbs_info->freq_hi_jiffies;
}
}
max_delay:
if (!delay)
delay = delay_for_sampling_rate(od_tuners->sampling_rate
* dbs_info->rate_mult);
return delay;
}
/**
* cpufreq_set - set the CPU frequency
* @policy: pointer to policy struct where freq is being set
* @freq: target frequency in kHz
*
* Sets the CPU frequency to freq.
*/
static int cpufreq_set(struct cpufreq_policy *policy, unsigned int freq)
{
int ret = -EINVAL;
pr_debug("cpufreq_set for cpu %u, freq %u kHz\n", policy->cpu, freq);
mutex_lock(&userspace_mutex);
if (!per_cpu(cpu_is_managed, policy->cpu))
goto err;
/*
* We're safe from concurrent calls to ->target() here
* as we hold the userspace_mutex lock. If we were calling
* cpufreq_driver_target, a deadlock situation might occur:
* A: cpufreq_set (lock userspace_mutex) ->
* cpufreq_driver_target(lock policy->lock)
* B: cpufreq_set_policy(lock policy->lock) ->
* __cpufreq_governor ->
* cpufreq_governor_userspace (lock userspace_mutex)
*/
ret = __cpufreq_driver_target(policy, freq, CPUFREQ_RELATION_L);
err:
mutex_unlock(&userspace_mutex);
return ret;
}
/*
* Every sampling_rate, if current idle time is less than 30% (default),
* try to increase the frequency. Every sampling_rate if the current idle
* time is more than 70% (default), try to decrease the frequency.
*/
static void sa_check_cpu(int cpu, unsigned int load)
{
struct sa_cpu_dbs_info_s const *dbs_info = &per_cpu(sa_cpu_dbs_info, cpu);
struct cpufreq_policy *policy = dbs_info->cdbs.cur_policy;
struct dbs_data* const dbs_data = policy->governor_data;
const struct sa_dbs_tuners* const sa_tuners = dbs_data->tuners;
const unsigned int prev_load = dbs_info->cdbs.prev_load;
const unsigned int freq_cur = policy->cur;
unsigned int freq_target = 0;
const bool input_event = input_event_boost(sa_tuners->input_event_duration);
/* Check for frequency decrease */
if (load < sa_tuners->down_threshold) {
const unsigned int freq_min = policy->min;
// break out early if the frequency is set to the minimum
if (freq_cur == freq_min)
return;
if (input_event)
freq_target = sa_tuners->input_event_min_freq;
else
freq_target = (freq_cur + freq_min) >> RESISTANCE_OFFSET;
__cpufreq_driver_target(policy, freq_target,
CPUFREQ_RELATION_L);
}
/* Check for frequency increase */
else if (load >= max(sa_tuners->up_threshold, prev_load)) {
static int
__syf_pwm_cpufreq_governor(struct cpufreq_policy *policy,
unsigned int event)
{
unsigned int cpu = policy->cpu;
struct syf_info_t *__syf_info = &per_cpu(_syf_info, cpu);
switch (event) {
case CPUFREQ_GOV_START:
if (!cpu_online(cpu))
return -EINVAL;
if (__syf_info->enable)
break;
/*
* Picker:
* Call your governor at here.
* Important: You may have a mutex lock for calling your governor.
*/
break;
case CPUFREQ_GOV_STOP:
break;
/* Change the cpu freq. with either highest freq. or lowest freq. */
case CPUFREQ_GOV_LIMITS:
mutex_lock(&_syf_mutex);
if (policy->max <
__syf_info->cur_policy.cur) {
__cpufreq_driver_target(&__syf_info->cur_policy,
policy->max,
CPUFREQ_RELATION_H);
}
else if (policy->min >
__syf_info->cur_policy.cur) {
__cpufreq_driver_target(&__syf_info->cur_policy,
policy->min,
CPUFREQ_RELATION_L);
}
mutex_unlock(&_syf_mutex);
break;
}
return 0;
}
static void interactivex_suspend(int suspend)
{
unsigned int max_speed;
max_speed = RESUME_SPEED;
if (!enabled) return;
if (!suspend) { // resume at max speed:
suspended = 0;
__cpufreq_driver_target(policy, max_speed, CPUFREQ_RELATION_L);
pr_info("[imoseyon] interactiveX awake at %d\n", policy->cur);
} else {
suspended = 1;
__cpufreq_driver_target(policy, policy->min, CPUFREQ_RELATION_L);
pr_info("[imoseyon] interactiveX suspended at %d\n", policy->cur);
}
}
static void od_check_cpu(int cpu, unsigned int load)
{
struct od_cpu_dbs_info_s *dbs_info = &per_cpu(od_cpu_dbs_info, cpu);
struct cpufreq_policy *policy = dbs_info->cdbs.cur_policy;
struct dbs_data *dbs_data = policy->governor_data;
struct od_dbs_tuners *od_tuners = dbs_data->tuners;
dbs_info->freq_lo = 0;
if (load > od_tuners->up_threshold) {
if (policy->cur < policy->max)
dbs_info->rate_mult =
od_tuners->sampling_down_factor;
dbs_freq_increase(policy, load, policy->max);
} else {
unsigned int freq_next;
freq_next = load * policy->cpuinfo.max_freq / 100;
dbs_info->rate_mult = 1;
if (!od_tuners->powersave_bias) {
trace_cpufreq_interactive_target(policy->cpu, load, freq_next, policy->cur, freq_next);
__cpufreq_driver_target(policy, freq_next,
CPUFREQ_RELATION_L);
trace_cpufreq_interactive_setspeed(policy->cpu, freq_next, policy->cur);
return;
}
freq_next = od_ops.powersave_bias_target(policy, freq_next,
CPUFREQ_RELATION_L);
trace_cpufreq_interactive_target(policy->cpu, load, freq_next, policy->cur, freq_next);
__cpufreq_driver_target(policy, freq_next, CPUFREQ_RELATION_L);
trace_cpufreq_interactive_setspeed(policy->cpu, freq_next, policy->cur);
}
}
static void msm_gov_check_limits(struct cpufreq_policy *policy)
{
struct msm_gov *gov = &per_cpu(msm_gov_info, policy->cpu);
if (policy->max < gov->cur_freq)
__cpufreq_driver_target(policy, policy->max,
CPUFREQ_RELATION_H);
else if (policy->min > gov->min_freq)
__cpufreq_driver_target(policy, policy->min,
CPUFREQ_RELATION_L);
else
__cpufreq_driver_target(policy, gov->cur_freq,
CPUFREQ_RELATION_L);
gov->cur_freq = policy->cur;
gov->min_freq = policy->min;
gov->max_freq = policy->max;
}
static int greenmax_powersave_bias_setspeed(struct cpufreq_policy *policy,
struct cpufreq_policy *altpolicy,
int level)
{
if (level == POWERSAVE_BIAS_MAXLEVEL) {
/* maximum powersave; set to lowest frequency */
__cpufreq_driver_target(policy,
(altpolicy) ? altpolicy->min : policy->min,
CPUFREQ_RELATION_L);
return 1;
} else if (level == POWERSAVE_BIAS_MINLEVEL) {
/* minimum powersave; set to highest frequency */
__cpufreq_driver_target(policy,
(altpolicy) ? altpolicy->max : policy->max,
CPUFREQ_RELATION_H);
return 1;
}
return 0;
}
static void dbs_freq_increase(struct cpufreq_policy *p, unsigned int freq)
{
if (od_tuners.powersave_bias)
freq = powersave_bias_target(p, freq, CPUFREQ_RELATION_H);
else if (p->cur == p->max)
return;
__cpufreq_driver_target(p, freq, od_tuners.powersave_bias ?
CPUFREQ_RELATION_L : CPUFREQ_RELATION_H);
}
static void dbs_freq_increase(struct cpufreq_policy *p, unsigned int freq)
{
struct dbs_data *dbs_data = p->governor_data;
struct od_dbs_tuners *od_tuners = dbs_data->tuners;
if (od_tuners->powersave_bias)
freq = od_ops.powersave_bias_target(p, freq,
CPUFREQ_RELATION_H);
else if (p->cur == p->max)
return;
#ifdef CONFIG_ARCH_HI6XXX
__cpufreq_driver_target(p, freq, CPUFREQ_RELATION_L);
#else
__cpufreq_driver_target(p, freq, od_tuners->powersave_bias ?
CPUFREQ_RELATION_L : CPUFREQ_RELATION_H);
#endif
}
static int cpufreq_governor_userspace(struct cpufreq_policy *policy,
unsigned int event)
{
unsigned int cpu = policy->cpu;
int rc = 0;
switch (event) {
case CPUFREQ_GOV_START:
BUG_ON(!policy->cur);
pr_debug("started managing cpu %u\n", cpu);
mutex_lock(&userspace_mutex);
per_cpu(cpu_is_managed, cpu) = 1;
mutex_unlock(&userspace_mutex);
break;
case CPUFREQ_GOV_STOP:
pr_debug("managing cpu %u stopped\n", cpu);
mutex_lock(&userspace_mutex);
per_cpu(cpu_is_managed, cpu) = 0;
mutex_unlock(&userspace_mutex);
break;
case CPUFREQ_GOV_LIMITS:
mutex_lock(&userspace_mutex);
pr_debug("limit event for cpu %u: %u - %u kHz, currently %u kHz\n",
cpu, policy->min, policy->max,
policy->cur);
if (policy->max < policy->cur)
__cpufreq_driver_target(policy, policy->max,
CPUFREQ_RELATION_H);
else if (policy->min > policy->cur)
__cpufreq_driver_target(policy, policy->min,
CPUFREQ_RELATION_C);
mutex_unlock(&userspace_mutex);
break;
}
return rc;
}
static int cpufreq_governor_performance(struct cpufreq_policy *policy,
unsigned int event)
{
switch (event) {
case CPUFREQ_GOV_START:
case CPUFREQ_GOV_LIMITS:
__cpufreq_driver_target(policy, policy->max, CPUFREQ_RELATION_H);
break;
default:
break;
}
return 0;
}
/*
* Every sampling_rate, we check, if current idle time is less than 20%
* (default), then we try to increase frequency. Else, we adjust the frequency
* proportional to load.
*/
static void od_check_cpu(int cpu, unsigned int load)
{
struct od_cpu_dbs_info_s *dbs_info = &per_cpu(od_cpu_dbs_info, cpu);
struct cpufreq_policy *policy = dbs_info->cdbs.cur_policy;
struct dbs_data *dbs_data = policy->governor_data;
struct od_dbs_tuners *od_tuners = dbs_data->tuners;
dbs_info->freq_lo = 0;
/* Check for frequency increase */
if (load > od_tuners->up_threshold) {
/* If switching to max speed, apply sampling_down_factor */
if (policy->cur < policy->max)
dbs_info->rate_mult =
od_tuners->sampling_down_factor;
dbs_freq_increase(policy, policy->max);
return;
} else {
/* Calculate the next frequency proportional to load */
unsigned int freq_next;
freq_next = load * policy->cpuinfo.max_freq / 100;
/* No longer fully busy, reset rate_mult */
dbs_info->rate_mult = 1;
if (freq_next < policy->min)
freq_next = policy->min;
if (!od_tuners->powersave_bias) {
__cpufreq_driver_target(policy, freq_next,
CPUFREQ_RELATION_L);
return;
}
freq_next = od_ops.powersave_bias_target(policy, freq_next,
CPUFREQ_RELATION_L);
__cpufreq_driver_target(policy, freq_next, CPUFREQ_RELATION_L);
}
}
static void dbs_freq_increase(struct cpufreq_policy *policy, unsigned int freq)
{
struct dbs_data *dbs_data = policy->governor_data;
struct od_dbs_tuners *od_tuners = dbs_data->tuners;
if (od_tuners->powersave_bias)
freq = od_ops.powersave_bias_target(policy, freq,
CPUFREQ_RELATION_H);
else if (policy->cur == policy->max)
return;
__cpufreq_driver_target(policy, freq, od_tuners->powersave_bias ?
CPUFREQ_RELATION_L : CPUFREQ_RELATION_H);
}
static int cpufreq_governor_performance(struct cpufreq_policy *policy,
unsigned int event)
{
switch (event) {
case CPUFREQ_GOV_START:
case CPUFREQ_GOV_LIMITS:
dprintk("setting to %u kHz because of event %u\n", policy->max, event);
__cpufreq_driver_target(policy, policy->max, CPUFREQ_RELATION_H);
break;
default:
break;
}
return 0;
}
/**
* cpufreq_set - set the CPU frequency
* @policy: pointer to policy struct where freq is being set
* @freq: target frequency in kHz
*
* Sets the CPU frequency to freq.
*/
static int cpufreq_set(struct cpufreq_policy *policy, unsigned int freq)
{
int ret = -EINVAL;
pr_debug("cpufreq_set for cpu %u, freq %u kHz\n", policy->cpu, freq);
mutex_lock(&userspace_mutex);
if (!per_cpu(cpu_is_managed, policy->cpu))
goto err;
ret = __cpufreq_driver_target(policy, freq, CPUFREQ_RELATION_C);
err:
mutex_unlock(&userspace_mutex);
return ret;
}
/* We use the same work function to sale up and down */
static void cpufreq_interactivex_freq_change_time_work(struct work_struct *work)
{
unsigned int cpu;
cpumask_t tmp_mask = work_cpumask;
for_each_cpu(cpu, tmp_mask) {
if (!suspended && (target_freq >= freq_threshold || target_freq == policy->max) ) {
if (policy->cur < 400000) {
// avoid quick jump from lowest to highest
target_freq = resume_speed;
}
if (nr_running() == 1) {
cpumask_clear_cpu(cpu, &work_cpumask);
return;
}
__cpufreq_driver_target(policy, target_freq, CPUFREQ_RELATION_H);
} else {
if (!suspended) {
target_freq = cpufreq_interactivex_calc_freq(cpu);
__cpufreq_driver_target(policy, target_freq, CPUFREQ_RELATION_L);
} else { // special care when suspended
if (target_freq > suspendfreq) {
__cpufreq_driver_target(policy, suspendfreq, CPUFREQ_RELATION_H);
} else {
target_freq = cpufreq_interactivex_calc_freq(cpu);
if (target_freq < policy->cur)
__cpufreq_driver_target(policy, target_freq, CPUFREQ_RELATION_H);
}
}
}
freq_change_time_in_idle = get_cpu_idle_time_us(cpu, &freq_change_time);
cpumask_clear_cpu(cpu, &work_cpumask);
}
}
static int
syf_pwm_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, void *arg)
{
int i;
unsigned int freq;
cpu_ctrl_t *cc = (cpu_ctrl_t *) arg;
pmu_results_t *r = &(cc->pmu);
unsigned int amt_cpu = cc->amt_cpu;
unsigned int amt_counter = cc->amt_counter;
for (i = 0; i < amt_cpu; ++i) {
struct syf_info_t *_sinfo = &per_cpu(_syf_info, i);
switch (cmd) {
case SYFPWM_TESTING:
printk("TESTING.\n");
break;
case SYFPWM_PMU_START:
pmu_start(amt_counter, cc->evt_t);
break;
case SYFPWM_PMU_STOP:
pmu_stop(amt_counter);
memcpy(r, &pmu, sizeof(pmu_results_t));
break;
case SYFPWM_GET_FEQU:
mutex_lock(&_syf_mutex);
cpufreq_get_policy(&_sinfo->cur_policy, i);
freq = cpufreq_get(_sinfo->cur_policy.cpu);
mutex_unlock(&_syf_mutex);
break;
case SYFPWM_SET_FEQU:
mutex_lock(&_syf_mutex);
cpufreq_get_policy(&_sinfo->cur_policy, i);
freq = __cpufreq_driver_target(&_sinfo->cur_policy,
(unsigned int) cc->cpu_freq,
CPUFREQ_RELATION_H);
mutex_unlock(&_syf_mutex);
break;
}
}
return 0;
}
static int cpufreq_governor_powersave(struct cpufreq_policy *policy,
unsigned int event)
{
switch (event) {
case CPUFREQ_GOV_START:
case CPUFREQ_GOV_LIMITS:
pr_debug("setting to %u kHz because of event %u\n",
policy->min, event);
__cpufreq_driver_target(policy, policy->min,
CPUFREQ_RELATION_L);
break;
default:
break;
}
return 0;
}
inline static void target_freq(struct cpufreq_policy *policy,
struct greenmax_info_s *this_greenmax, int new_freq, int old_freq,
int prefered_relation) {
int index, target;
struct cpufreq_frequency_table *table = this_greenmax->freq_table;
unsigned int cpu = this_greenmax->cpu;
dprintk(GREENMAX_DEBUG_ALG, "%d: %s\n", old_freq, __func__);
// apply policy limits - just to be sure
new_freq = validate_freq(policy, new_freq);
if (!cpufreq_frequency_table_target(policy, table, new_freq,
prefered_relation, &index)) {
target = table[index].frequency;
if (target == old_freq) {
// if for example we are ramping up to *at most* current + ramp_up_step
// but there is no such frequency higher than the current, try also
// to ramp up to *at least* current + ramp_up_step.
if (new_freq > old_freq && prefered_relation == CPUFREQ_RELATION_H
&& !cpufreq_frequency_table_target(policy, table, new_freq,
CPUFREQ_RELATION_L, &index))
target = table[index].frequency;
// simlarly for ramping down:
else if (new_freq < old_freq
&& prefered_relation == CPUFREQ_RELATION_L
&& !cpufreq_frequency_table_target(policy, table, new_freq,
CPUFREQ_RELATION_H, &index))
target = table[index].frequency;
}
// no change
if (target == old_freq)
return;
} else {
dprintk(GREENMAX_DEBUG_ALG, "frequency change failed\n");
return;
}
dprintk(GREENMAX_DEBUG_JUMPS, "%d: jumping to %d (%d) cpu %d\n", old_freq, new_freq, target, cpu);
__cpufreq_driver_target(policy, target, prefered_relation);
// remember last time we changed frequency
this_greenmax->freq_change_time = ktime_to_us(ktime_get());
}
static int cpufreq_set(struct cpufreq_policy *policy, unsigned int freq)
{
int ret = -EINVAL;
l_vbfs_cpufreq_set_flag = 1;
#ifdef CONFIG_CPU_FREQ_DBG
pr_info("cpufreq_set for cpu %u, freq %u kHz\n", policy->cpu, freq);
#else
pr_debug("cpufreq_set for cpu %u, freq %u kHz\n", policy->cpu, freq);
#endif
mutex_lock(&vbfs_mutex);
/*
if (!per_cpu(cpu_is_managed, policy->cpu))
goto err;
per_cpu(cpu_set_freq, policy->cpu) = freq;
if (freq < per_cpu(cpu_min_freq, policy->cpu))
freq = per_cpu(cpu_min_freq, policy->cpu);
if (freq > per_cpu(cpu_max_freq, policy->cpu))
freq = per_cpu(cpu_max_freq, policy->cpu);
*/
if(freq < policy->min)
freq = policy->min;
if(freq > policy->max)
freq = policy->max;
/*
* We're safe from concurrent calls to ->target() here
* as we hold the userspace_mutex lock. If we were calling
* cpufreq_driver_target, a deadlock situation might occur:
* A: cpufreq_set (lock userspace_mutex) ->
* cpufreq_driver_target(lock policy->lock)
* B: cpufreq_set_policy(lock policy->lock) ->
* __cpufreq_governor ->
* cpufreq_governor_userspace (lock userspace_mutex)
*/
ret = __cpufreq_driver_target(policy, freq, CPUFREQ_RELATION_L);
err:
mutex_unlock(&vbfs_mutex);
return ret;
}
static int cpufreq_governor_performance(struct cpufreq_policy *policy,
unsigned int event)
{
switch (event) {
case CPUFREQ_GOV_START:
case CPUFREQ_GOV_LIMITS:
pr_debug("setting to %u kHz because of event %u\n",
policy->max, event);
__cpufreq_driver_target(policy, policy->max,
CPUFREQ_RELATION_H);
break;
case CPUFREQ_GOV_STOP:
schedule_work_on(0, &performance_down_work);
break;
default:
break;
}
return 0;
}
static void dbs_freq_increase(struct cpufreq_policy *policy, unsigned int load, unsigned int freq)
{
struct dbs_data *dbs_data = policy->governor_data;
struct od_dbs_tuners *od_tuners = dbs_data->tuners;
if (od_tuners->powersave_bias)
freq = od_ops.powersave_bias_target(policy, freq,
CPUFREQ_RELATION_H);
else if (policy->cur == policy->max) {
trace_cpufreq_interactive_already (policy->cpu, load, policy->cur, policy->cur, policy->max);
return;
}
trace_cpufreq_interactive_target (policy->cpu, load, freq, policy->cur, freq);
__cpufreq_driver_target(policy, freq, od_tuners->powersave_bias ?
CPUFREQ_RELATION_L : CPUFREQ_RELATION_H);
trace_cpufreq_interactive_setspeed (policy->cpu, freq, policy->cur);
}
static void od_dbs_timer(struct work_struct *work)
{
struct od_cpu_dbs_info_s *dbs_info =
container_of(work, struct od_cpu_dbs_info_s, cdbs.work.work);
unsigned int cpu = dbs_info->cdbs.cur_policy->cpu;
struct od_cpu_dbs_info_s *core_dbs_info = &per_cpu(od_cpu_dbs_info,
cpu);
struct dbs_data *dbs_data = dbs_info->cdbs.cur_policy->governor_data;
struct od_dbs_tuners *od_tuners = dbs_data->tuners;
int delay = 0, sample_type = core_dbs_info->sample_type;
bool modify_all = true;
mutex_lock(&core_dbs_info->cdbs.timer_mutex);
if (!need_load_eval(&core_dbs_info->cdbs, od_tuners->sampling_rate)) {
modify_all = false;
goto max_delay;
}
/* Common NORMAL_SAMPLE setup */
core_dbs_info->sample_type = OD_NORMAL_SAMPLE;
if (sample_type == OD_SUB_SAMPLE) {
delay = core_dbs_info->freq_lo_jiffies;
__cpufreq_driver_target(core_dbs_info->cdbs.cur_policy,
core_dbs_info->freq_lo, CPUFREQ_RELATION_H);
} else {
dbs_check_cpu(dbs_data, cpu);
if (core_dbs_info->freq_lo) {
/* Setup timer for SUB_SAMPLE */
core_dbs_info->sample_type = OD_SUB_SAMPLE;
delay = core_dbs_info->freq_hi_jiffies;
}
}
max_delay:
if (!delay)
delay = delay_for_sampling_rate(od_tuners->sampling_rate
* core_dbs_info->rate_mult);
gov_queue_work(dbs_data, dbs_info->cdbs.cur_policy, delay, modify_all);
mutex_unlock(&core_dbs_info->cdbs.timer_mutex);
}