tree 7debdd89fd94d099de3d3763b47af00ef6359d9d
parent 48f13bf3e742fca8aab87f6c39451d03bf5952d4
author KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> 1192523170 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1192552981 -0700

memory unplug: memory hotplug cleanup

A clean up patch for "scanning memory resource [start, end)" operation.

Now, find_next_system_ram() function is used in memory hotplug, but this
interface is not easy to use and codes are complicated.

This patch adds walk_memory_resouce(start,len,arg,func) function.
The function 'func' is called per valid memory resouce range in [start,pfn).

[pbadari@us.ibm.com: Error handling in walk_memory_resource()]
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>