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authorTejun Heo <tj@kernel.org>2011-02-16 14:13:07 +0300
committerTejun Heo <tj@kernel.org>2011-02-16 14:13:07 +0300
commitec8cf29b1d39aeb6ef98bc589f0c9a33a8f94c49 (patch)
tree096c8f6b23944e000628d245fd43719cd7a1b104 /arch/x86/mm/numa_64.c
parentffe77a4605fb2588f8666850ad3e3b196241658f (diff)
downloadlinux-ec8cf29b1d39aeb6ef98bc589f0c9a33a8f94c49.tar.xz
x86-64, NUMA: Use common {cpu|mem}_nodes_parsed
ACPI and amd are using separate nodes_parsed masks. Add {cpu|mem}_nodes_parsed and use them in all NUMA init methods. Initialization of the masks and building node_possible_map are now handled commonly by initmem_init(). dummy_numa_init() is updated to set node 0 on both masks. While at it, move the info messages from scan to init. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Brian Gerst <brgerst@gmail.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Shaohui Zheng <shaohui.zheng@intel.com> Cc: David Rientjes <rientjes@google.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/mm/numa_64.c')
-rw-r--r--arch/x86/mm/numa_64.c25
1 files changed, 18 insertions, 7 deletions
diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c
index c984e3431cc7..4404e1d649ac 100644
--- a/arch/x86/mm/numa_64.c
+++ b/arch/x86/mm/numa_64.c
@@ -25,6 +25,9 @@
struct pglist_data *node_data[MAX_NUMNODES] __read_mostly;
EXPORT_SYMBOL(node_data);
+nodemask_t cpu_nodes_parsed __initdata;
+nodemask_t mem_nodes_parsed __initdata;
+
struct memnode memnode;
static unsigned long __initdata nodemap_addr;
@@ -582,22 +585,23 @@ static int __init numa_emulation(unsigned long start_pfn,
static int dummy_numa_init(void)
{
- return 0;
-}
-
-static int dummy_scan_nodes(void)
-{
printk(KERN_INFO "%s\n",
numa_off ? "NUMA turned off" : "No NUMA configuration found");
printk(KERN_INFO "Faking a node at %016lx-%016lx\n",
0LU, max_pfn << PAGE_SHIFT);
+ node_set(0, cpu_nodes_parsed);
+ node_set(0, mem_nodes_parsed);
+
+ return 0;
+}
+
+static int dummy_scan_nodes(void)
+{
/* setup dummy node covering all memory */
memnode_shift = 63;
memnodemap = memnode.embedded_map;
memnodemap[0] = 0;
- node_set_online(0);
- node_set(0, node_possible_map);
memblock_x86_register_active_regions(0, 0, max_pfn);
init_memory_mapping_high();
setup_node_bootmem(0, 0, max_pfn << PAGE_SHIFT);
@@ -630,6 +634,8 @@ void __init initmem_init(void)
for (j = 0; j < MAX_LOCAL_APIC; j++)
set_apicid_to_node(j, NUMA_NO_NODE);
+ nodes_clear(cpu_nodes_parsed);
+ nodes_clear(mem_nodes_parsed);
nodes_clear(node_possible_map);
nodes_clear(node_online_map);
@@ -643,6 +649,11 @@ void __init initmem_init(void)
nodes_clear(node_possible_map);
nodes_clear(node_online_map);
#endif
+ /* Account for nodes with cpus and no memory */
+ nodes_or(node_possible_map, mem_nodes_parsed, cpu_nodes_parsed);
+ if (WARN_ON(nodes_empty(node_possible_map)))
+ continue;
+
if (!scan_nodes[i]())
return;
}