The patch titled
hot-add-mem x86_64: memory_add_physaddr_to_nid enable
has been added to the -mm tree. Its filename is
hot-add-mem-x86_64-memory_add_physaddr_to_nid-enable.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: hot-add-mem x86_64: memory_add_physaddr_to_nid enable
From: Keith Mannthey <kmannth@xxxxxxxxxx>
The api for hot-add memory already has a construct for finding nodes based on
an address, memory_add_physaddr_to_nid. This patch allows the fucntion to do
something besides return 0. It uses the nodes_add infomation to lookup to
node info for a hot add event.
Signed-off-by: Keith Mannthey<kmannth@xxxxxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
diff -puN arch/x86_64/mm/init.c~hot-add-mem-x86_64-memory_add_physaddr_to_nid-enable arch/x86_64/mm/init.c
--- a/arch/x86_64/mm/init.c~hot-add-mem-x86_64-memory_add_physaddr_to_nid-enable
+++ a/arch/x86_64/mm/init.c
@@ -517,19 +517,6 @@ void online_page(struct page *page)
#ifdef CONFIG_MEMORY_HOTPLUG
/*
- * XXX: memory_add_physaddr_to_nid() is to find node id from physical address
- * via probe interface of sysfs. If acpi notifies hot-add event, then it
- * can tell node id by searching dsdt. But, probe interface doesn't have
- * node id. So, return 0 as node id at this time.
- */
-#ifdef CONFIG_NUMA
-int memory_add_physaddr_to_nid(u64 start)
-{
- return 0;
-}
-#endif
-
-/*
* Memory is added always to NORMAL zone. This means you will never get
* additional DMA/DMA32 memory.
*/
@@ -560,6 +547,13 @@ int remove_memory(u64 start, u64 size)
}
EXPORT_SYMBOL_GPL(remove_memory);
+#ifndef CONFIG_ACPI_NUMA
+int memory_add_physaddr_to_nid(u64 start)
+{
+ return 0;
+}
+#endif
+
#else /* CONFIG_MEMORY_HOTPLUG */
/*
* Memory Hotadd without sparsemem. The mem_maps have been allocated in advance,
diff -puN arch/x86_64/mm/srat.c~hot-add-mem-x86_64-memory_add_physaddr_to_nid-enable arch/x86_64/mm/srat.c
--- a/arch/x86_64/mm/srat.c~hot-add-mem-x86_64-memory_add_physaddr_to_nid-enable
+++ a/arch/x86_64/mm/srat.c
@@ -25,7 +25,7 @@ static struct acpi_table_slit *acpi_slit
static nodemask_t nodes_parsed __initdata;
static struct bootnode nodes[MAX_NUMNODES] __initdata;
-static struct bootnode nodes_add[MAX_NUMNODES] __initdata;
+static struct bootnode nodes_add[MAX_NUMNODES];
static int found_add_area __initdata;
int hotadd_percent __initdata = 0;
@@ -457,3 +457,14 @@ int __node_distance(int a, int b)
}
EXPORT_SYMBOL(__node_distance);
+
+int memory_add_physaddr_to_nid(u64 start)
+{
+ int i, ret = 0;
+
+ for_each_node(i)
+ if (nodes_add[i].start <= start && nodes_add[i].end > start)
+ ret = i;
+
+ return ret;
+}
_
Patches currently in -mm which might be from kmannth@xxxxxxxxxx are
memory-hotadd-fixes-enhance-collistion-check.patch
hot-add-mem-x86_64-acpi-motherboard-fix.patch
hot-add-mem-x86_64-fixup-externs.patch
hot-add-mem-x86_64-kconfig-changes.patch
hot-add-mem-x86_64-enable-sparsemem-in-sratc.patch
hot-add-mem-x86_64-memory_add_physaddr_to_nid-enable.patch
hot-add-mem-x86_64-memory_add_physaddr_to_nid-node-fixup.patch
hot-add-mem-x86_64-x86_64-kernel-mapping-fix.patch
hot-add-mem-x86_64-use-config_memory_hotplug_sparse.patch
hot-add-mem-x86_64-use-config_memory_hotplug_reserve.patch
hot-add-mem-x86_64-valid-add-range-check.patch
convert-i386-numa-kva-space-to-bootmem.patch
convert-i386-numa-kva-space-to-bootmem-tidy.patch
convert-i386-summit-subarch-to-use-srat-info-for-apicid_to_node-calls.patch
-
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