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cpuidle: menu: Use ktime_to_us instead of reinventing the wheel

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The ktime_to_us implementation is slightly better than the one implemented
in menu.c. Use it

Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Mel Gorman 2014-08-06 14:19:19 +01:00 committed by Rafael J. Wysocki
parent ae77930060
commit 107d4f4601
1 changed files with 1 additions and 4 deletions
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5
drivers/cpuidle/governors/menu.c
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@ -296,7 +296,6 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev)
int latency_req = pm_qos_request(PM_QOS_CPU_DMA_LATENCY);
int i;
unsigned int interactivity_req;
struct timespec t;
if (data->needs_update) {
menu_update(drv, dev);
@ -310,9 +309,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev)
return 0;
/* determine the expected residency time, round up */
t = ktime_to_timespec(tick_nohz_get_sleep_length());
data->next_timer_us =
t.tv_sec * USEC_PER_SEC + t.tv_nsec / NSEC_PER_USEC;
data->next_timer_us = ktime_to_us(tick_nohz_get_sleep_length());
data->bucket = which_bucket(data->next_timer_us);