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| author | Tejun Heo <tj@kernel.org> | 2011-07-14 11:43:42 +0200 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2011-07-14 11:47:43 -0700 |
| commit | 7c0caeb866b0f648d91bb75b8bc6f86af95bb033 (patch) | |
| tree | 042804fe716310a4de4effbbaa4461237e2b5d4a /mm/Kconfig | |
| parent | 67e24bcb725cabd15ef577bf301275d03d6086d7 (diff) | |
| download | lwn-7c0caeb866b0f648d91bb75b8bc6f86af95bb033.tar.gz lwn-7c0caeb866b0f648d91bb75b8bc6f86af95bb033.zip | |
memblock: Add optional region->nid
From 83103b92f3234ec830852bbc5c45911bd6cbdb20 Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Thu, 14 Jul 2011 11:22:16 +0200
Add optional region->nid which can be enabled by arch using
CONFIG_HAVE_MEMBLOCK_NODE_MAP. When enabled, memblock also carries
NUMA node information and replaces early_node_map[].
Newly added memblocks have MAX_NUMNODES as nid. Arch can then call
memblock_set_node() to set node information. memblock takes care of
merging and node affine allocations w.r.t. node information.
When MEMBLOCK_NODE_MAP is enabled, early_node_map[], related data
structures and functions to manipulate and iterate it are disabled.
memblock version of __next_mem_pfn_range() is provided such that
for_each_mem_pfn_range() behaves the same and its users don't have to
be updated.
-v2: Yinghai spotted section mismatch caused by missing
__init_memblock in memblock_set_node(). Fixed.
Signed-off-by: Tejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/20110714094342.GF3455@htj.dyndns.org
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index 8ca47a5ee9c8..30a5d4792b83 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -131,6 +131,9 @@ config SPARSEMEM_VMEMMAP config HAVE_MEMBLOCK boolean +config HAVE_MEMBLOCK_NODE_MAP + boolean + # eventually, we can have this option just 'select SPARSEMEM' config MEMORY_HOTPLUG bool "Allow for memory hot-add" |