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1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef __VDSO_MATH64_H | |
3 | #define __VDSO_MATH64_H | |
4 | ||
5 | static __always_inline u32 | |
6 | __iter_div_u64_rem(u64 dividend, u32 divisor, u64 *remainder) | |
7 | { | |
8 | u32 ret = 0; | |
9 | ||
10 | while (dividend >= divisor) { | |
11 | /* The following asm() prevents the compiler from | |
12 | optimising this loop into a modulo operation. */ | |
13 | asm("" : "+rm"(dividend)); | |
14 | ||
15 | dividend -= divisor; | |
16 | ret++; | |
17 | } | |
18 | ||
19 | *remainder = dividend; | |
20 | ||
21 | return ret; | |
22 | } | |
23 | ||
24 | #endif /* __VDSO_MATH64_H */ |