commit 98d5c21c812e4e3b795f5bd912f407ed7c5e4e38
author Badari Pulavarty <pbadari@us.ibm.com> Fri Apr 18 13:33:52 2008 -0700
committer Paul Mackerras <paulus@samba.org> Tue Apr 29 15:57:53 2008 +1000
tree 40c5680e5b8b337fdddd3becf59484a19e2037d5
parent 57b539269e9eef4dedc533d83c94877bc6b4d44d

[POWERPC] Update lmb data structures for hotplug memory add/remove

The powerpc kernel maintains information about logical memory blocks
in the lmb.memory structure, which is initialized and updated at boot
time, but not when memory is added or removed while the kernel is
running.

This adds a hotplug memory notifier which updates lmb.memory when
memory is added or removed.  This information is useful for eHEA
driver to find out the memory layout and holes.

NOTE: No special locking is needed for lmb_add() and lmb_remove().
Calls to these are serialized by caller. (pSeries_reconfig_chain).

Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>