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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2020-04-13 09:51:53 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2020-04-15 12:31:23 +0200 |
| commit | 2eece2192d9be43edfa27158c13019123cf1140d (patch) | |
| tree | e476b5d82a11dbeff093b774322bbf943e8b3c8b | |
| parent | fd0130cfe4f3db56de7094747793fef39b744a0d (diff) | |
| download | barebox-2eece2192d9be43edfa27158c13019123cf1140d.tar.gz barebox-2eece2192d9be43edfa27158c13019123cf1140d.tar.xz | |
include: linux/kernel.h: port DIV_ROUND_CLOSEST_ULL definition
We already have DIV_ROUND_CLOSEST, but no DIV_ROUND_CLOSEST_ULL.
Import the latter for use by later commits.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| -rw-r--r-- | include/linux/kernel.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index b320f7e902..23c23a73f5 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -6,6 +6,7 @@ #include <linux/bug.h> #include <linux/barebox-wrapper.h> #include <linux/limits.h> +#include <asm-generic/div64.h> #define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a) - 1) #define ALIGN_DOWN(x, a) ALIGN((x) - ((a) - 1), (a)) @@ -41,6 +42,18 @@ (((x) + ((__divisor) / 2)) / (__divisor)); \ } \ ) +/* + * 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; \ +} \ +) /** * upper_32_bits - return bits 32-63 of a number |