Merge tag 'mmc-10-29-2019' of https://gitlab.denx.de/u-boot/custodians/u-boot-mmc
[oweals/u-boot.git] / include / linux / bitmap.h
1 // SPDX-License-Identifier: GPL-2.0+
2 #ifndef __LINUX_BITMAP_H
3 #define __LINUX_BITMAP_H
4
5 #include <asm/types.h>
6 #include <linux/types.h>
7 #include <linux/bitops.h>
8
9 #define small_const_nbits(nbits) \
10         (__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG)
11
12 static inline void bitmap_zero(unsigned long *dst, int nbits)
13 {
14         if (small_const_nbits(nbits)) {
15                 *dst = 0UL;
16         } else {
17                 int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long);
18
19                 memset(dst, 0, len);
20         }
21 }
22
23 #endif /* __LINUX_BITMAP_H */