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authorBadari Pulavarty <pbadari@us.ibm.com>2008-04-18 13:33:52 -0700
committerPaul Mackerras <paulus@samba.org>2008-04-29 15:57:53 +1000
commit98d5c21c812e4e3b795f5bd912f407ed7c5e4e38 (patch)
tree40c5680e5b8b337fdddd3becf59484a19e2037d5 /lib/hweight.c
parent57b539269e9eef4dedc533d83c94877bc6b4d44d (diff)
downloadlinux-98d5c21c812e4e3b795f5bd912f407ed7c5e4e38.tar.bz2
[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>
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