forked from luck/tmp_suning_uos_patched
governors: unify last_state_idx
Since this field is shared by all governors, move it to cpuidle device structure. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Marcelo Tosatti
Rafael J. Wysocki
parent
259231a045
commit
7d4daeedd5
|
|
@ -38,7 +38,6 @@ struct ladder_device_state {
|
|||
|
||||
struct ladder_device {
|
||||
struct ladder_device_state states[CPUIDLE_STATE_MAX];
|
||||
int last_state_idx;
|
||||
};
|
||||
|
||||
static DEFINE_PER_CPU(struct ladder_device, ladder_devices);
|
||||
|
|
@ -49,12 +48,13 @@ static DEFINE_PER_CPU(struct ladder_device, ladder_devices);
|
|||
* @old_idx: the current state index
|
||||
* @new_idx: the new target state index
|
||||
*/
|
||||
static inline void ladder_do_selection(struct ladder_device *ldev,
|
||||
static inline void ladder_do_selection(struct cpuidle_device *dev,
|
||||
struct ladder_device *ldev,
|
||||
int old_idx, int new_idx)
|
||||
{
|
||||
ldev->states[old_idx].stats.promotion_count = 0;
|
||||
ldev->states[old_idx].stats.demotion_count = 0;
|
||||
ldev->last_state_idx = new_idx;
|
||||
dev->last_state_idx = new_idx;
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -68,13 +68,13 @@ static int ladder_select_state(struct cpuidle_driver *drv,
|
|||
{
|
||||
struct ladder_device *ldev = this_cpu_ptr(&ladder_devices);
|
||||
struct ladder_device_state *last_state;
|
||||
int last_residency, last_idx = ldev->last_state_idx;
|
||||
int last_residency, last_idx = dev->last_state_idx;
|
||||
int first_idx = drv->states[0].flags & CPUIDLE_FLAG_POLLING ? 1 : 0;
|
||||
int latency_req = cpuidle_governor_latency_req(dev->cpu);
|
||||
|
||||
/* Special case when user has set very strict latency requirement */
|
||||
if (unlikely(latency_req == 0)) {
|
||||
ladder_do_selection(ldev, last_idx, 0);
|
||||
ladder_do_selection(dev, ldev, last_idx, 0);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -91,7 +91,7 @@ static int ladder_select_state(struct cpuidle_driver *drv,
|
|||
last_state->stats.promotion_count++;
|
||||
last_state->stats.demotion_count = 0;
|
||||
if (last_state->stats.promotion_count >= last_state->threshold.promotion_count) {
|
||||
ladder_do_selection(ldev, last_idx, last_idx + 1);
|
||||
ladder_do_selection(dev, ldev, last_idx, last_idx + 1);
|
||||
return last_idx + 1;
|
||||
}
|
||||
}
|
||||
|
|
@ -107,7 +107,7 @@ static int ladder_select_state(struct cpuidle_driver *drv,
|
|||
if (drv->states[i].exit_latency <= latency_req)
|
||||
break;
|
||||
}
|
||||
ladder_do_selection(ldev, last_idx, i);
|
||||
ladder_do_selection(dev, ldev, last_idx, i);
|
||||
return i;
|
||||
}
|
||||
|
||||
|
|
@ -116,7 +116,7 @@ static int ladder_select_state(struct cpuidle_driver *drv,
|
|||
last_state->stats.demotion_count++;
|
||||
last_state->stats.promotion_count = 0;
|
||||
if (last_state->stats.demotion_count >= last_state->threshold.demotion_count) {
|
||||
ladder_do_selection(ldev, last_idx, last_idx - 1);
|
||||
ladder_do_selection(dev, ldev, last_idx, last_idx - 1);
|
||||
return last_idx - 1;
|
||||
}
|
||||
}
|
||||
|
|
@ -139,7 +139,7 @@ static int ladder_enable_device(struct cpuidle_driver *drv,
|
|||
struct ladder_device_state *lstate;
|
||||
struct cpuidle_state *state;
|
||||
|
||||
ldev->last_state_idx = first_idx;
|
||||
dev->last_state_idx = first_idx;
|
||||
|
||||
for (i = first_idx; i < drv->state_count; i++) {
|
||||
state = &drv->states[i];
|
||||
|
|
@ -167,9 +167,8 @@ static int ladder_enable_device(struct cpuidle_driver *drv,
|
|||
*/
|
||||
static void ladder_reflect(struct cpuidle_device *dev, int index)
|
||||
{
|
||||
struct ladder_device *ldev = this_cpu_ptr(&ladder_devices);
|
||||
if (index > 0)
|
||||
ldev->last_state_idx = index;
|
||||
dev->last_state_idx = index;
|
||||
}
|
||||
|
||||
static struct cpuidle_governor ladder_governor = {
|
||||
|
|
|
|||
|
|
@ -117,7 +117,6 @@
|
|||
*/
|
||||
|
||||
struct menu_device {
|
||||
int last_state_idx;
|
||||
int needs_update;
|
||||
int tick_wakeup;
|
||||
|
||||
|
|
@ -455,7 +454,7 @@ static void menu_reflect(struct cpuidle_device *dev, int index)
|
|||
{
|
||||
struct menu_device *data = this_cpu_ptr(&menu_devices);
|
||||
|
||||
data->last_state_idx = index;
|
||||
dev->last_state_idx = index;
|
||||
data->needs_update = 1;
|
||||
data->tick_wakeup = tick_nohz_idle_got_tick();
|
||||
}
|
||||
|
|
@ -468,7 +467,7 @@ static void menu_reflect(struct cpuidle_device *dev, int index)
|
|||
static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev)
|
||||
{
|
||||
struct menu_device *data = this_cpu_ptr(&menu_devices);
|
||||
int last_idx = data->last_state_idx;
|
||||
int last_idx = dev->last_state_idx;
|
||||
struct cpuidle_state *target = &drv->states[last_idx];
|
||||
unsigned int measured_us;
|
||||
unsigned int new_factor;
|
||||
|
|
|
|||
|
|
@ -96,7 +96,6 @@ struct teo_idle_state {
|
|||
* @time_span_ns: Time between idle state selection and post-wakeup update.
|
||||
* @sleep_length_ns: Time till the closest timer event (at the selection time).
|
||||
* @states: Idle states data corresponding to this CPU.
|
||||
* @last_state: Idle state entered by the CPU last time.
|
||||
* @interval_idx: Index of the most recent saved idle interval.
|
||||
* @intervals: Saved idle duration values.
|
||||
*/
|
||||
|
|
@ -104,7 +103,6 @@ struct teo_cpu {
|
|||
u64 time_span_ns;
|
||||
u64 sleep_length_ns;
|
||||
struct teo_idle_state states[CPUIDLE_STATE_MAX];
|
||||
int last_state;
|
||||
int interval_idx;
|
||||
unsigned int intervals[INTERVALS];
|
||||
};
|
||||
|
|
@ -130,7 +128,9 @@ static void teo_update(struct cpuidle_driver *drv, struct cpuidle_device *dev)
|
|||
*/
|
||||
measured_us = sleep_length_us;
|
||||
} else {
|
||||
unsigned int lat = drv->states[cpu_data->last_state].exit_latency;
|
||||
unsigned int lat;
|
||||
|
||||
lat = drv->states[dev->last_state_idx].exit_latency;
|
||||
|
||||
measured_us = ktime_to_us(cpu_data->time_span_ns);
|
||||
/*
|
||||
|
|
@ -245,9 +245,9 @@ static int teo_select(struct cpuidle_driver *drv, struct cpuidle_device *dev,
|
|||
int max_early_idx, idx, i;
|
||||
ktime_t delta_tick;
|
||||
|
||||
if (cpu_data->last_state >= 0) {
|
||||
if (dev->last_state_idx >= 0) {
|
||||
teo_update(drv, dev);
|
||||
cpu_data->last_state = -1;
|
||||
dev->last_state_idx = -1;
|
||||
}
|
||||
|
||||
cpu_data->time_span_ns = local_clock();
|
||||
|
|
@ -394,7 +394,7 @@ static void teo_reflect(struct cpuidle_device *dev, int state)
|
|||
{
|
||||
struct teo_cpu *cpu_data = per_cpu_ptr(&teo_cpus, dev->cpu);
|
||||
|
||||
cpu_data->last_state = state;
|
||||
dev->last_state_idx = state;
|
||||
/*
|
||||
* If the wakeup was not "natural", but triggered by one of the safety
|
||||
* nets, assume that the CPU might have been idle for the entire sleep
|
||||
|
|
|
|||
|
|
@ -85,6 +85,7 @@ struct cpuidle_device {
|
|||
unsigned int cpu;
|
||||
ktime_t next_hrtimer;
|
||||
|
||||
int last_state_idx;
|
||||
int last_residency;
|
||||
u64 poll_limit_ns;
|
||||
struct cpuidle_state_usage states_usage[CPUIDLE_STATE_MAX];
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user