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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748/* SPDX-License-Identifier: GPL-2.0 */#ifndef __ASM_GENERIC_BITS_PER_LONG#define __ASM_GENERIC_BITS_PER_LONG
#include <uapi/asm-generic/bitsperlong.h>
#ifdef CONFIG_64BIT#define BITS_PER_LONG 64#else#define BITS_PER_LONG 32#endif /* CONFIG_64BIT */
/* * FIXME: The check currently breaks x86-64 build, so it's * temporarily disabled. Please fix x86-64 and reenable */#if 0 && BITS_PER_LONG != __BITS_PER_LONG#error Inconsistent word size. Check asm/bitsperlong.h#endif
#if __CHAR_BIT__ * __SIZEOF_LONG__ != __BITS_PER_LONG#error Inconsistent word size. Check asm/bitsperlong.h#endif
#ifndef __ASSEMBLER___Static_assert(sizeof(long) * 8 == __BITS_PER_LONG, "Inconsistent word size. Check asm/bitsperlong.h");#endif
#ifndef BITS_PER_LONG_LONG#define BITS_PER_LONG_LONG 64#endif
/* * small_const_nbits(n) is true precisely when it is known at compile-time * that BITMAP_SIZE(n) is 1, i.e. 1 <= n <= BITS_PER_LONG. This allows * various bit/bitmap APIs to provide a fast inline implementation. Bitmaps * of size 0 are very rare, and a compile-time-known-size 0 is most likely * a sign of error. They will be handled correctly by the bit/bitmap APIs, * but using the out-of-line functions, so that the inline implementations * can unconditionally dereference the pointer(s). */#define small_const_nbits(nbits) \ (__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG && (nbits) > 0)
#endif /* __ASM_GENERIC_BITS_PER_LONG */