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BITMAP_FROM_U32ARRAY(9) Basic Kernel Library Functions BITMAP_FROM_U32ARRAY(9)

NAME

bitmap_from_u32array - copy the contents of a u32 array of bits to bitmap

SYNOPSIS

unsigned int bitmap_from_u32array(unsigned long * bitmap, unsigned int nbits, const u32 * buf, unsigned int nwords);

ARGUMENTS

unsigned long * bitmap

array of unsigned longs, the destination bitmap, non NULL

unsigned int nbits

number of bits in bitmap

const u32 * buf

array of u32 (in host byte order), the source bitmap, non NULL

unsigned int nwords

number of u32 words in buf

DESCRIPTION

copy min(nbits, 32*nwords) bits from buf to bitmap, remaining bits between nword and nbits in bitmap (if any) are cleared. In last word of bitmap, the bits beyond nbits (if any) are kept unchanged.

Return the number of bits effectively copied.

COPYRIGHT

June 2017 Kernel Hackers Manual 4.11