1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __ASM_GENERIC_BITS_PER_LONG
 3#define __ASM_GENERIC_BITS_PER_LONG
 4
 5#include <uapi/asm-generic/bitsperlong.h>
 
 
 
 
 
 
 
 
 
 6
 
 7
 8#ifdef CONFIG_64BIT
 9#define BITS_PER_LONG 64
10#else
11#define BITS_PER_LONG 32
12#endif /* CONFIG_64BIT */
13
14/*
15 * FIXME: The check currently breaks x86-64 build, so it's
16 * temporarily disabled. Please fix x86-64 and reenable
17 */
18#if 0 && BITS_PER_LONG != __BITS_PER_LONG
19#error Inconsistent word size. Check asm/bitsperlong.h
20#endif
21
22#ifndef BITS_PER_LONG_LONG
23#define BITS_PER_LONG_LONG 64
24#endif
25
26/*
27 * small_const_nbits(n) is true precisely when it is known at compile-time
28 * that BITMAP_SIZE(n) is 1, i.e. 1 <= n <= BITS_PER_LONG. This allows
29 * various bit/bitmap APIs to provide a fast inline implementation. Bitmaps
30 * of size 0 are very rare, and a compile-time-known-size 0 is most likely
31 * a sign of error. They will be handled correctly by the bit/bitmap APIs,
32 * but using the out-of-line functions, so that the inline implementations
33 * can unconditionally dereference the pointer(s).
34 */
35#define small_const_nbits(nbits) \
36	(__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG && (nbits) > 0)
37
38#endif /* __ASM_GENERIC_BITS_PER_LONG */

 
 1#ifndef __ASM_GENERIC_BITS_PER_LONG
 2#define __ASM_GENERIC_BITS_PER_LONG
 3
 4/*
 5 * There seems to be no way of detecting this automatically from user
 6 * space, so 64 bit architectures should override this in their
 7 * bitsperlong.h. In particular, an architecture that supports
 8 * both 32 and 64 bit user space must not rely on CONFIG_64BIT
 9 * to decide it, but rather check a compiler provided macro.
10 */
11#ifndef __BITS_PER_LONG
12#define __BITS_PER_LONG 32
13#endif
14
15#ifdef __KERNEL__
16
17#ifdef CONFIG_64BIT
18#define BITS_PER_LONG 64
19#else
20#define BITS_PER_LONG 32
21#endif /* CONFIG_64BIT */
22
23/*
24 * FIXME: The check currently breaks x86-64 build, so it's
25 * temporarily disabled. Please fix x86-64 and reenable
26 */
27#if 0 && BITS_PER_LONG != __BITS_PER_LONG
28#error Inconsistent word size. Check asm/bitsperlong.h
29#endif
30
31#endif /* __KERNEL__ */
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
32#endif /* __ASM_GENERIC_BITS_PER_LONG */