btop(D3)btop(D3)NAMEbtop - convert size in bytes to size in pages (round down)
SYNOPSIS
#include <sys/types.h>
#include <sys/ddi.h>
ulong_t btop(ulong_t numbytes);
Arguments
numbytes Size in bytes to convert to equivalent size in pages.
DESCRIPTIONbtop returns the number of pages that are contained in the specified
number of bytes, with downward rounding if the byte count is not a page
multiple.
Return Values
The return value is the number of pages. There are no invalid input
values, and therefore no error return values.
USAGE
Level
Initialization, Base or Interrupt.
Synchronization Constraints
Does not sleep.
Driver-defined basic locks, read/write locks, and sleep locks may be held
across calls to this function.
Examples
If the page size is 2048, then btop(4096) and btop(4097) both return 2,
and btop(4095) returns 1. btop(0) returns 0.
REFERENCESbtopr(D3), ptob(D3)
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