bits.h File Reference

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Macros
#define	BITS_PER_LONG   32
#define	__GENMASK(h, l)    (((~0UL) << (l)) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
#define	__GENMASK_ULL(h, l)    (((~0ULL) << (l)) & (~0ULL >> (63 - (h))))
#define	DMA_BIT_MASK(n)   (((n) == 64) ? ~0ULL : ((1ULL << (n)) - 1))

Macro Definition Documentation

__GENMASK

#define __GENMASK	(		h,
			l
	)		(((~0UL) << (l)) & (~0UL >> (BITS_PER_LONG - 1 - (h))))

__GENMASK_ULL

#define __GENMASK_ULL	(		h,
			l
	)		(((~0ULL) << (l)) & (~0ULL >> (63 - (h))))

BITS_PER_LONG

#define BITS_PER_LONG   32

DMA_BIT_MASK

#define DMA_BIT_MASK

(

n

)

(((n) == 64) ? ~0ULL : ((1ULL << (n)) - 1))