lib/x86/asm/bitops.h

#ifndef _ASMX86_BITOPS_H_
#define _ASMX86_BITOPS_H_

#ifndef _BITOPS_H_
#error only <bitops.h> can be included directly
#endif

#ifdef __x86_64__
#define BITS_PER_LONG	64
#else
#define BITS_PER_LONG	32
#endif

#define HAVE_BUILTIN_FLS 1

static inline void test_and_set_bit(long nr, unsigned long *addr)
{
	asm volatile("lock; bts %1,%0"
		     : "+m" (*addr)
		     : "Ir" (nr)
		     : "memory");
}

#endif