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authorBadari Pulavarty <pbadari@us.ibm.com>2008-04-18 16:33:52 -0400
committerPaul Mackerras <paulus@samba.org>2008-04-29 01:57:53 -0400
commit98d5c21c812e4e3b795f5bd912f407ed7c5e4e38 (patch)
tree40c5680e5b8b337fdddd3becf59484a19e2037d5 /include/linux
parent57b539269e9eef4dedc533d83c94877bc6b4d44d (diff)
[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>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/lmb.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/lmb.h b/include/linux/lmb.h
index 271153d27fba..55d4b261a9e8 100644
--- a/include/linux/lmb.h
+++ b/include/linux/lmb.h
@@ -40,7 +40,8 @@ extern struct lmb lmb;
40 40
41extern void __init lmb_init(void); 41extern void __init lmb_init(void);
42extern void __init lmb_analyze(void); 42extern void __init lmb_analyze(void);
43extern long __init lmb_add(u64 base, u64 size); 43extern long lmb_add(u64 base, u64 size);
44extern long lmb_remove(u64 base, u64 size);
44extern long __init lmb_reserve(u64 base, u64 size); 45extern long __init lmb_reserve(u64 base, u64 size);
45extern u64 __init lmb_alloc_nid(u64 size, u64 align, int nid, 46extern u64 __init lmb_alloc_nid(u64 size, u64 align, int nid,
46 u64 (*nid_range)(u64, u64, int *)); 47 u64 (*nid_range)(u64, u64, int *));