The patch titled
Subject: cpuidle: menu: use DIV_ROUND_CLOSEST_ULL()
has been added to the -mm tree. Its filename is
cpuidle-menu-use-div_round_closest_ull.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/cpuidle-menu-use-div_round_closest_ull.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/cpuidle-menu-use-div_round_closest_ull.patch
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------------------------------------------------------
From: Javi Merino <javi.merino@xxxxxxx>
Subject: 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@xxxxxxx>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Stephen Hemminger <shemminger@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/cpuidle/governors/menu.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
diff -puN drivers/cpuidle/governors/menu.c~cpuidle-menu-use-div_round_closest_ull drivers/cpuidle/governors/menu.c
--- a/drivers/cpuidle/governors/menu.c~cpuidle-menu-use-div_round_closest_ull
+++ a/drivers/cpuidle/governors/menu.c
@@ -190,12 +190,6 @@ static DEFINE_PER_CPU(struct menu_device
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_dr
* 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);
_
Patches currently in -mm which might be from javi.merino@xxxxxxx are
kernelh-implement-div_round_closest_ull.patch
clk-bcm-kona-use-div_round_closest_ull.patch
cpuidle-menu-use-div_round_closest_ull.patch
media-cxd2820r-use-div_round_closest_ull.patch
linux-next.patch
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