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kernel add
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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
*/
#ifndef _ASM_ARCH_HWEIGHT_H
#define _ASM_ARCH_HWEIGHT_H
#ifdef ARCH_HAS_USABLE_BUILTIN_POPCOUNT
#include <asm/types.h>
static inline unsigned int __arch_hweight32(unsigned int w)
{
return __builtin_popcount(w);
}
static inline unsigned int __arch_hweight16(unsigned int w)
{
return __builtin_popcount(w & 0xffff);
}
static inline unsigned int __arch_hweight8(unsigned int w)
{
return __builtin_popcount(w & 0xff);
}
static inline unsigned long __arch_hweight64(__u64 w)
{
return __builtin_popcountll(w);
}
#else
#include <asm-generic/bitops/arch_hweight.h>
#endif
#endif /* _ASM_ARCH_HWEIGHT_H */
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