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math64: add kernel-doc for DIV64_U64_ROUND_UP

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Add kernel-doc for DIV64_U64_ROUND_UP so that it appears in the
documentation.

Signed-off-by: Liam Beguin <liambeguin@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20221118182309.3824530-2-liambeguin@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Liam Beguin
2022-11-18 13:23:08 -05:00
committed by Jonathan Corbet
parent d28a1de5d1
commit 090f13cac8
1 changed files with 10 additions and 0 deletions
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10
include/linux/math64.h
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@@ -284,6 +284,16 @@ static inline u64 mul_u64_u32_div(u64 a, u32 mul, u32 divisor)
u64 mul_u64_u64_div_u64(u64 a, u64 mul, u64 div);
/**
* DIV64_U64_ROUND_UP - unsigned 64bit divide with 64bit divisor rounded up
* @ll: unsigned 64bit dividend
* @d: unsigned 64bit divisor
*
* Divide unsigned 64bit dividend by unsigned 64bit divisor
* and round up.
*
* Return: dividend / divisor rounded up
*/
#define DIV64_U64_ROUND_UP(ll, d) \
({ u64 _tmp = (d); div64_u64((ll) + _tmp - 1, _tmp); })