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cpuidle: menu: use DIV_ROUND_CLOSEST_ULL() 

Now that the kernel provides DIV_ROUND_CLOSEST_ULL(), drop the internal
implementation and use the kernel one.

Signed-off-by: Javi Merino <javi.merino@arm.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Javi Merino 2015-04-16 12:43:51 -07:00 committed by Linus Torvalds
parent aa7762010a
commit ee3c86f356
1 changed files with 1 additions and 7 deletions
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8
drivers/cpuidle/governors/menu.c
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@ -190,12 +190,6 @@ static DEFINE_PER_CPU(struct menu_device, menu_devices);
static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev); static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev);
/* This implements DIV_ROUND_CLOSEST but avoids 64 bit division */
static u64 div_round64(u64 dividend, u32 divisor)
{
return div_u64(dividend + (divisor / 2), divisor);
}
/* /*
* Try detecting repeating patterns by keeping track of the last 8 * Try detecting repeating patterns by keeping track of the last 8
* intervals, and checking if the standard deviation of that set * intervals, and checking if the standard deviation of that set
@ -317,7 +311,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev)
* operands are 32 bits. * operands are 32 bits.
* Make sure to round up for half microseconds. * Make sure to round up for half microseconds.
*/ */
data->predicted_us = div_round64((uint64_t)data->next_timer_us * data->predicted_us = DIV_ROUND_CLOSEST_ULL((uint64_t)data->next_timer_us *
data->correction_factor[data->bucket], data->correction_factor[data->bucket],
RESOLUTION * DECAY); RESOLUTION * DECAY);