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Commit 8d134db0 authored by Linus Torvalds's avatar Linus Torvalds
Browse files
parents 40b7bc06 821376bf
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+17 −4
Original line number Original line Diff line number Diff line
@@ -314,8 +314,8 @@ __ffs (unsigned long x)
#ifdef __KERNEL__
#ifdef __KERNEL__


/*
/*
 * find_last_zero_bit - find the last zero bit in a 64 bit quantity
 * Return bit number of last (most-significant) bit set.  Undefined
 * @x: The value to search
 * for x==0.  Bits are numbered from 0..63 (e.g., ia64_fls(9) == 3).
 */
 */
static inline unsigned long
static inline unsigned long
ia64_fls (unsigned long x)
ia64_fls (unsigned long x)
@@ -327,10 +327,23 @@ ia64_fls (unsigned long x)
	return exp - 0xffff;
	return exp - 0xffff;
}
}


/*
 * Find the last (most significant) bit set.  Returns 0 for x==0 and
 * bits are numbered from 1..32 (e.g., fls(9) == 4).
 */
static inline int
static inline int
fls (int x)
fls (int t)
{
{
	return ia64_fls((unsigned int) x);
	unsigned long x = t & 0xffffffffu;

	if (!x)
		return 0;
	x |= x >> 1;
	x |= x >> 2;
	x |= x >> 4;
	x |= x >> 8;
	x |= x >> 16;
	return ia64_popcnt(x);
}
}


/*
/*
+7 −3
Original line number Original line Diff line number Diff line
@@ -133,6 +133,9 @@ register unsigned long ia64_r13 asm ("r13") __attribute_used__;
	ia64_intri_res;								\
	ia64_intri_res;								\
})
})


#if __GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
# define ia64_popcnt(x)		__builtin_popcountl(x)
#else
# define ia64_popcnt(x)						\
# define ia64_popcnt(x)						\
  ({								\
  ({								\
	__u64 ia64_intri_res;					\
	__u64 ia64_intri_res;					\
@@ -140,6 +143,7 @@ register unsigned long ia64_r13 asm ("r13") __attribute_used__;
								\
								\
	ia64_intri_res;						\
	ia64_intri_res;						\
  })
  })
#endif


#define ia64_getf_exp(x)					\
#define ia64_getf_exp(x)					\
({								\
({								\