btopr(9F)

NAME

     btopr - convert size in bytes to size in pages (round up)

SYNOPSIS

     #include <sys/ddi.h>

     unsigned long btopr(unsigned long numbytes);

INTERFACE LEVEL

     Architecture independent level 1 (DDI/DKI).

PARAMETERS

     numbytes
           Number of bytes.

DESCRIPTION

     btopr() returns the number of memory pages contained in  the
     specified  number  of  bytes  memory, rounded up to the next
     whole page. For example, if the  page  size  is  2048,  then
     btopr(4096) returns 2, and btopr(4097) returns 3.

RETURN VALUES

     The return value is always the number of pages.   There  are
     no  invalid  input  values,  and  therefore  no error return
     values.

CONTEXT

     btopr() can be called from user or interrupt context.

SEE ALSO

     btop(9F), ddi_btopr(9F), ptob(9F)

     Writing Device Drivers