The patch titled
Subject: kernel.h: implement DIV_ROUND_CLOSEST_ULL
has been added to the -mm tree. Its filename is
kernelh-implement-div_round_closest_ull.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kernelh-implement-div_round_closest_ull.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kernelh-implement-div_round_closest_ull.patch
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------------------------------------------------------
From: Javi Merino <javi.merino@xxxxxxx>
Subject: kernel.h: implement DIV_ROUND_CLOSEST_ULL
We have grown a number of different implementations of
DIV_ROUND_CLOSEST_ULL throughout the kernel. Move the i915 one to
kernel.h so that it can be reused.
Signed-off-by: Javi Merino <javi.merino@xxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
Cc: David Airlie <airlied@xxxxxxxx>
Cc: Guenter Roeck <linux@xxxxxxxxxxxx>
Acked-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx>
Cc: Alex Elder <elder@xxxxxxxxxx>
Cc: Antti Palosaari <crope@xxxxxx>
Cc: Javi Merino <javi.merino@xxxxxxx>
Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Mike Turquette <mturquette@xxxxxxxxxx>
Cc: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
Cc: Stephen Hemminger <shemminger@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_drv.h | 3 ---
drivers/gpu/drm/i915/intel_panel.c | 1 +
include/linux/kernel.h | 12 ++++++++++++
3 files changed, 13 insertions(+), 3 deletions(-)
diff -puN drivers/gpu/drm/i915/intel_drv.h~kernelh-implement-div_round_closest_ull drivers/gpu/drm/i915/intel_drv.h
--- a/drivers/gpu/drm/i915/intel_drv.h~kernelh-implement-div_round_closest_ull
+++ a/drivers/gpu/drm/i915/intel_drv.h
@@ -36,9 +36,6 @@
#include <drm/drm_dp_mst_helper.h>
#include <drm/drm_rect.h>
-#define DIV_ROUND_CLOSEST_ULL(ll, d) \
-({ unsigned long long _tmp = (ll)+(d)/2; do_div(_tmp, d); _tmp; })
-
/**
* _wait_for - magic (register) wait macro
*
diff -puN drivers/gpu/drm/i915/intel_panel.c~kernelh-implement-div_round_closest_ull drivers/gpu/drm/i915/intel_panel.c
--- a/drivers/gpu/drm/i915/intel_panel.c~kernelh-implement-div_round_closest_ull
+++ a/drivers/gpu/drm/i915/intel_panel.c
@@ -30,6 +30,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#include <linux/kernel.h>
#include <linux/moduleparam.h>
#include "intel_drv.h"
diff -puN include/linux/kernel.h~kernelh-implement-div_round_closest_ull include/linux/kernel.h
--- a/include/linux/kernel.h~kernelh-implement-div_round_closest_ull
+++ a/include/linux/kernel.h
@@ -103,6 +103,18 @@
(((__x) - ((__d) / 2)) / (__d)); \
} \
)
+/*
+ * Same as above but for u64 dividends. divisor must be a 32-bit
+ * number.
+ */
+#define DIV_ROUND_CLOSEST_ULL(x, divisor)( \
+{ \
+ typeof(divisor) __d = divisor; \
+ unsigned long long _tmp = (x) + (__d) / 2; \
+ do_div(_tmp, __d); \
+ _tmp; \
+} \
+)
/*
* Multiplies an integer by a fraction, while avoiding unnecessary
_
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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