The patch titled
x86_64 memory hot-add: arch_find_node x86_64
has been added to the -mm tree. Its filename is
x86_64-memory-hot-add-arch_find_node-x86_64.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: x86_64 memory hot-add: arch_find_node x86_64
From: keith mannthey <kmannth@xxxxxxxxxx>
This is a enablement of the generic arch_find_node for x86_64. It uses the
nodes_add date collected from the SRAT to do it's lookup.
I suspect and i386 version will be needed when I get to that arch with my
work.
Signed-off-by: Keith Mannthey <kmannth@xxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/x86_64/Kconfig | 4 ++++
arch/x86_64/mm/srat.c | 12 ++++++++++++
2 files changed, 16 insertions(+)
diff -puN arch/x86_64/Kconfig~x86_64-memory-hot-add-arch_find_node-x86_64 arch/x86_64/Kconfig
--- a/arch/x86_64/Kconfig~x86_64-memory-hot-add-arch_find_node-x86_64
+++ a/arch/x86_64/Kconfig
@@ -343,6 +343,10 @@ config ARCH_MEMORY_PROBE
def_bool y
depends on MEMORY_HOTPLUG
+config ARCH_FIND_NODE
+ def_bool y
+ depends on MEMORY_HOTPLUG
+
config ARCH_FLATMEM_ENABLE
def_bool y
depends on !NUMA
diff -puN arch/x86_64/mm/srat.c~x86_64-memory-hot-add-arch_find_node-x86_64 arch/x86_64/mm/srat.c
--- a/arch/x86_64/mm/srat.c~x86_64-memory-hot-add-arch_find_node-x86_64
+++ a/arch/x86_64/mm/srat.c
@@ -459,3 +459,15 @@ int __node_distance(int a, int b)
}
EXPORT_SYMBOL(__node_distance);
+
+int arch_find_node(unsigned long start, unsigned long size)
+{
+ int i, ret = 0;
+ unsigned long end = start+size;
+
+ for_each_node(i) {
+ if (nodes_add[i].start <= start && nodes_add[i].end >= end)
+ ret = i;
+ }
+ return ret;
+}
_
Patches currently in -mm which might be from kmannth@xxxxxxxxxx are
x86_64-memory-hot-add-nodes_add-cleanup.patch
x86_64-memory-hot-add-create-arch_find_node.patch
x86_64-memory-hot-add-arch_find_node-x86_64.patch
x86_64-memory-hot-add-fix-kernel-mapping-code.patch
x86_64-memory-hot-add-fix-acpi-motherboardc.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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