dect/linux-2.6
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[PATCH] ppc64: add memory present

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Provide hooks for PPC64 to allow memory models to be informed of installed
memory areas.  This allows SPARSEMEM to instantiate mem_map for the populated
areas.

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Martin Bligh <mbligh@aracnet.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andy Whitcroft 2005-06-23 00:08:02 -07:00 committed by Linus Torvalds
parent 510f8fa7ba
commit 74b30be2e1
2 changed files with 5 additions and 2 deletions
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4
arch/ppc64/Kconfig
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@ -212,8 +212,8 @@ config ARCH_FLATMEM_ENABLE
source "mm/Kconfig"
config HAVE_ARCH_EARLY_PFN_TO_NID
bool
default y
def_bool y
depends on NEED_MULTIPLE_NODES
# Some NUMA nodes have memory ranges that span
# other nodes. Even though a pfn is valid and

3
arch/ppc64/mm/numa.c
View file

@ -440,6 +440,8 @@ new_range:
for (i = start ; i < (start+size); i += MEMORY_INCREMENT)
numa_memory_lookup_table[i >> MEMORY_INCREMENT_SHIFT] =
numa_domain;
memory_present(numa_domain, start >> PAGE_SHIFT,
(start + size) >> PAGE_SHIFT);
if (--ranges)
goto new_range;
@ -481,6 +483,7 @@ static void __init setup_nonnuma(void)
for (i = 0 ; i < top_of_ram; i += MEMORY_INCREMENT)
numa_memory_lookup_table[i >> MEMORY_INCREMENT_SHIFT] = 0;
memory_present(0, 0, init_node_data[0].node_end_pfn);
}
static void __init dump_numa_topology(void)