[PATCH] x86-64: Use SRAT data on Intel systems too.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index df55a63f8866..869770da2933 100644
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -942,6 +942,25 @@ static int __cpuinit intel_num_cpu_cores(struct cpuinfo_x86 *c)
                 return 1;
 }
 
+static void srat_detect_node(void)
+{
+#ifdef CONFIG_NUMA
+        unsigned apicid, node;
+        int cpu = smp_processor_id();
+
+        /* Don't do the funky fallback heuristics the AMD version employs
+           for now. */
+        apicid = phys_proc_id[cpu];
+        node = apicid_to_node[apicid];
+        if (node == NUMA_NO_NODE)
+                node = 0;
+        cpu_to_node[cpu] = node;
+
+        if (acpi_numa > 0)
+                printk(KERN_INFO "CPU %d -> Node %d\n", cpu, node);
+#endif
+}
+
 static void __cpuinit init_intel(struct cpuinfo_x86 *c)
 {
         /* Cache sizes */
@@ -960,6 +979,8 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c)
         if (c->x86 >= 15)
                 set_bit(X86_FEATURE_CONSTANT_TSC, &c->x86_capability);
         c->x86_num_cores = intel_num_cpu_cores(c);
+
+        srat_detect_node();
 }
 
 static void __cpuinit get_cpu_vendor(struct cpuinfo_x86 *c)