static unsigned int set_target_ratio;
static unsigned int current_ratio;
static bool should_skip;
-static bool reduce_irq;
-static atomic_t idle_wakeup_counter;
+
static unsigned int control_cpu; /* The cpu assigned to collect stat and update
* control parameters. default to BSP but BSP
* can be offlined.
cal_data[ratio + 1].steady_comp) / 3;
}
- /* REVISIT: simple penalty of double idle injection */
- if (reduce_irq)
- comp = ratio;
/* do not exceed limit */
if (comp + ratio >= MAX_TARGET_RATIO)
comp = MAX_TARGET_RATIO - ratio - 1;
struct powerclamp_calibration_data *d = &cal_data[target_ratio];
/*
- * adjust compensations if confidence level has not been reached or
- * there are too many wakeups during the last idle injection period, we
- * cannot trust the data for compensation.
+ * adjust compensations if confidence level has not been reached.
*/
- if (d->confidence >= CONFIDENCE_OK ||
- atomic_read(&idle_wakeup_counter) >
- win * num_online_cpus())
+ if (d->confidence >= CONFIDENCE_OK)
return;
delta = set_target_ratio - current_ratio;
tsc_last = tsc_now;
adjust_compensation(target_ratio, win);
- /*
- * too many external interrupts, set flag such
- * that we can take measure later.
- */
- reduce_irq = atomic_read(&idle_wakeup_counter) >=
- 2 * win * num_online_cpus();
- atomic_set(&idle_wakeup_counter, 0);
/* if we are above target+guard, skip */
return set_target_ratio + guard <= current_ratio;
}