mirror of https://gitee.com/openkylin/linux.git
25 lines
468 B
C
25 lines
468 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __VDSO_MATH64_H
|
|
#define __VDSO_MATH64_H
|
|
|
|
static __always_inline u32
|
|
__iter_div_u64_rem(u64 dividend, u32 divisor, u64 *remainder)
|
|
{
|
|
u32 ret = 0;
|
|
|
|
while (dividend >= divisor) {
|
|
/* The following asm() prevents the compiler from
|
|
optimising this loop into a modulo operation. */
|
|
asm("" : "+rm"(dividend));
|
|
|
|
dividend -= divisor;
|
|
ret++;
|
|
}
|
|
|
|
*remainder = dividend;
|
|
|
|
return ret;
|
|
}
|
|
|
|
#endif /* __VDSO_MATH64_H */
|