diff options
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/governors/menu.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c index 00c5f89..03d38c2 100644 --- a/drivers/cpuidle/governors/menu.c +++ b/drivers/cpuidle/governors/menu.c @@ -315,17 +315,21 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev) expected_interval = min(expected_interval, data->next_timer_us); if (CPUIDLE_DRIVER_STATE_START > 0) { - data->last_state_idx = CPUIDLE_DRIVER_STATE_START - 1; + struct cpuidle_state *s = &drv->states[CPUIDLE_DRIVER_STATE_START]; + unsigned int polling_threshold; + /* * We want to default to C1 (hlt), not to busy polling * unless the timer is happening really really soon, or * C1's exit latency exceeds the user configured limit. */ - if (expected_interval > drv->states[CPUIDLE_DRIVER_STATE_START].target_residency && - latency_req > drv->states[CPUIDLE_DRIVER_STATE_START].exit_latency && - !drv->states[CPUIDLE_DRIVER_STATE_START].disabled && + polling_threshold = max_t(unsigned int, 20, s->target_residency); + if (data->next_timer_us > polling_threshold && + latency_req > s->exit_latency && !s->disabled && !dev->states_usage[CPUIDLE_DRIVER_STATE_START].disable) data->last_state_idx = CPUIDLE_DRIVER_STATE_START; + else + data->last_state_idx = CPUIDLE_DRIVER_STATE_START - 1; } else { data->last_state_idx = CPUIDLE_DRIVER_STATE_START; } |