From ee3c86f356b4dfc130442d0bd68ff2da2bd60538 Mon Sep 17 00:00:00 2001 From: Javi Merino Date: Thu, 16 Apr 2015 12:43:51 -0700 Subject: [PATCH] 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 Acked-by: Rafael J. Wysocki Cc: Mel Gorman Cc: Stephen Hemminger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/cpuidle/governors/menu.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c index 4058079..b8a5fa1 100644 --- a/drivers/cpuidle/governors/menu.c +++ b/drivers/cpuidle/governors/menu.c @@ -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); -/* 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 * 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. * 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], RESOLUTION * DECAY); -- 2.7.4