Messages in this thread Patch in this message | | | Date | Fri, 17 Apr 2009 09:22:42 -0500 | From | Jack Steiner <> | Subject | [PATCH] - Memoryless nodes |
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Add support for nodes that have cpus but no memory. The current code was failing to add these nodes to the nodes_present_map.
Signed-off-by: Jack Steiner <steiner@sgi.com>
--- arch/x86/kernel/tlb_uv.c | 12 +++++++++++- arch/x86/mm/srat_64.c | 5 ++++- 2 files changed, 15 insertions(+), 2 deletions(-)
Index: linux/arch/x86/mm/srat_64.c =================================================================== --- linux.orig/arch/x86/mm/srat_64.c 2009-04-12 10:38:26.000000000 -0500 +++ linux/arch/x86/mm/srat_64.c 2009-04-12 10:38:47.000000000 -0500 @@ -28,6 +28,7 @@ int acpi_numa __initdata; static struct acpi_table_slit *acpi_slit; static nodemask_t nodes_parsed __initdata; +static nodemask_t cpu_nodes_parsed __initdata; static struct bootnode nodes[MAX_NUMNODES] __initdata; static struct bootnode nodes_add[MAX_NUMNODES]; static int found_add_area __initdata; @@ -174,6 +175,7 @@ acpi_numa_processor_affinity_init(struct else apic_id = pa->apic_id; apicid_to_node[apic_id] = node; + node_set(node, cpu_nodes_parsed); acpi_numa = 1; printk(KERN_INFO "SRAT: PXM %u -> APIC %u -> Node %u\n", pxm, apic_id, node); @@ -402,7 +404,8 @@ int __init acpi_scan_nodes(unsigned long return -1; } - node_possible_map = nodes_parsed; + /* Account for nodes with cpus and no memory */ + nodes_or(node_possible_map, nodes_parsed, cpu_nodes_parsed); /* Finally register nodes */ for_each_node_mask(i, node_possible_map)
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