LCOM1920-T02G10

#ifndef _BITMAP_H

#define _BITMAP_H

/* Bit map operations to manipulate bits of a simple mask variable. */

#define bit_set(mask, n)        ((mask) |= (1 << (n)))

#define bit_unset(mask, n)        ((mask) &= ~(1 << (n)))

#define bit_isset(mask, n)        ((mask) & (1 << (n)))

#define bit_empty(mask)                ((mask) = 0)

#define bit_fill(mask)                ((mask) = ~0)

/* Definitions previously in kernel/const.h */

#define BITCHUNK_BITS   (sizeof(bitchunk_t) * CHAR_BIT)

#define BITMAP_CHUNKS(nr_bits) (((nr_bits)+BITCHUNK_BITS-1)/BITCHUNK_BITS)

#define MAP_CHUNK(map,bit) (map)[((bit)/BITCHUNK_BITS)]

#define CHUNK_OFFSET(bit) ((bit)%BITCHUNK_BITS)

#define GET_BIT(map,bit) ( MAP_CHUNK(map,bit) & (1 << CHUNK_OFFSET(bit) ))

#define SET_BIT(map,bit) ( MAP_CHUNK(map,bit) |= (1 << CHUNK_OFFSET(bit) ))

#define UNSET_BIT(map,bit) ( MAP_CHUNK(map,bit) &= ~(1 << CHUNK_OFFSET(bit) ))

#if defined(CONFIG_SMP) && defined(__GNUC__)

#ifndef __ASSEMBLY__

static inline void bits_fill(bitchunk_t * chunks, unsigned bits)

{

        unsigned c, cnt;

        cnt = BITMAP_CHUNKS(bits);

        for (c = 0; c < cnt; c++)

                bit_fill(chunks[c]);

}

#endif

#endif

#endif        /* _BITMAP_H */