diff options
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/governors/menu.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c index 021b08dd139c..b6684fd89085 100644 --- a/drivers/cpuidle/governors/menu.c +++ b/drivers/cpuidle/governors/menu.c @@ -124,7 +124,6 @@ struct menu_device { int tick_wakeup; unsigned int next_timer_us; - unsigned int predicted_us; unsigned int bucket; unsigned int correction_factor[BUCKETS]; unsigned int intervals[INTERVALS]; @@ -290,6 +289,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev, int idx; unsigned int interactivity_req; unsigned int expected_interval; + unsigned int predicted_us; unsigned long nr_iowaiters, cpu_load; ktime_t delta_next; @@ -315,7 +315,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev, * operands are 32 bits. * Make sure to round up for half microseconds. */ - data->predicted_us = DIV_ROUND_CLOSEST_ULL((uint64_t)data->next_timer_us * + predicted_us = DIV_ROUND_CLOSEST_ULL((uint64_t)data->next_timer_us * data->correction_factor[data->bucket], RESOLUTION * DECAY); @@ -341,7 +341,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev, /* * Use the lowest expected idle interval to pick the idle state. */ - data->predicted_us = min(data->predicted_us, expected_interval); + predicted_us = min(predicted_us, expected_interval); if (tick_nohz_tick_stopped()) { /* @@ -352,19 +352,18 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev, * the known time till the closest timer event for the idle * state selection. */ - if (data->predicted_us < TICK_USEC) - data->predicted_us = ktime_to_us(delta_next); + if (predicted_us < TICK_USEC) + predicted_us = ktime_to_us(delta_next); } else { /* * Use the performance multiplier and the user-configurable * latency_req to determine the maximum exit latency. */ - interactivity_req = data->predicted_us / performance_multiplier(nr_iowaiters, cpu_load); + interactivity_req = predicted_us / performance_multiplier(nr_iowaiters, cpu_load); if (latency_req > interactivity_req) latency_req = interactivity_req; } - expected_interval = data->predicted_us; /* * Find the idle state with the lowest power while satisfying * our constraints. @@ -378,8 +377,8 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev, continue; if (idx == -1) idx = i; /* first enabled state */ - if (s->target_residency > data->predicted_us) { - if (data->predicted_us < TICK_USEC) + if (s->target_residency > predicted_us) { + if (predicted_us < TICK_USEC) break; if (!tick_nohz_tick_stopped()) { @@ -389,7 +388,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev, * tick in that case and let the governor run * again in the next iteration of the loop. */ - expected_interval = drv->states[idx].target_residency; + predicted_us = drv->states[idx].target_residency; break; } @@ -412,7 +411,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev, * expected idle duration so that the tick is retained * as long as that target residency is low enough. */ - expected_interval = drv->states[idx].target_residency; + predicted_us = drv->states[idx].target_residency; break; } idx = i; @@ -426,7 +425,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev, * expected idle duration is shorter than the tick period length. */ if (((drv->states[idx].flags & CPUIDLE_FLAG_POLLING) || - expected_interval < TICK_USEC) && !tick_nohz_tick_stopped()) { + predicted_us < TICK_USEC) && !tick_nohz_tick_stopped()) { unsigned int delta_next_us = ktime_to_us(delta_next); *stop_tick = false; |