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authorAndi Kleen <ak@suse.de>2005-09-12 18:49:24 +0200
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-12 10:49:56 -0700
commitdf0cc26b1b7f88f46307eea50a7469f0b58132d9 (patch)
treec4b4c7c38ca7833cabcd06c2929f617446939d76 /arch
parent3f098c2605bdf50176b26f4fa724e9b9c99e5242 (diff)
[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>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86_64/kernel/setup.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index df55a63f886..869770da293 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)