suse man page for add_active_range

ADD_ACTIVE_RANGE(9)					    Memory Management in Linux					       ADD_ACTIVE_RANGE(9)

NAME
       add_active_range - Register a range of PFNs backed by physical memory

SYNOPSIS
       void add_active_range(unsigned int nid, unsigned long start_pfn, unsigned long end_pfn);

ARGUMENTS
       nid
	   The node ID the range resides on

       start_pfn
	   The start PFN of the available physical memory

       end_pfn
	   The end PFN of the available physical memory

DESCRIPTION
       These ranges are stored in an early_node_map[] and later used by free_area_init_nodes to calculate zone sizes and holes. If the range spans
       a memory hole, it is up to the architecture to ensure the memory is not freed by the bootmem allocator. If possible the range being
       registered will be merged with existing ranges.

COPYRIGHT
Kernel Hackers Manual 2.6.					     July 2010						       ADD_ACTIVE_RANGE(9)