bitmap.h File Reference

#include <linux/kernel.h>
#include <linux/bitops.h>

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Macros
#define	test_and_set_bit(nr, addr)    ({int __old = test_bit(nr, addr); set_bit(nr, addr); __old; })
#define	test_and_clear_bit(nr, addr)    ({ int __old = test_bit(nr, addr); clear_bit(nr,addr); __old;})
#define	bitmap_zero(dst, nbits)    memset(dst, 0, BITS_TO_LONGS(nbits) * sizeof(unsigned long))
#define	bitmap_copy(dst, src, nbits)    memcpy(dst, src, BITS_TO_LONGS(nbits) * sizeof(unsigned long))

Macro Definition Documentation

bitmap_copy

#define bitmap_copy	(		dst,
			src,
			nbits
	)		memcpy(dst, src, BITS_TO_LONGS(nbits) * sizeof(unsigned long))

bitmap_zero

#define bitmap_zero	(		dst,
			nbits
	)		memset(dst, 0, BITS_TO_LONGS(nbits) * sizeof(unsigned long))

test_and_clear_bit

#define test_and_clear_bit	(		nr,
			addr
	)		({ int __old = test_bit(nr, addr); clear_bit(nr,addr); __old;})

test_and_set_bit

#define test_and_set_bit	(		nr,
			addr
	)		({int __old = test_bit(nr, addr); set_bit(nr, addr); __old; })