x86: use x2apic id reported by cpuid during topology discovery, fix

v2: Fix for !SMP build

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/cpu/addon_cpuid_features.c b/arch/x86/kernel/cpu/addon_cpuid_features.c
index aa9641ae6703d63b27809604d46e904f8e44407a..a2d1a545767d3adc11fda60a3586b1e61567e01e 100644 (file)
--- a/arch/x86/kernel/cpu/addon_cpuid_features.c
+++ b/arch/x86/kernel/cpu/addon_cpuid_features.c
@@ -69,6 +69,7 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
  */
 void __cpuinit detect_extended_topology(struct cpuinfo_x86 *c)
 {
+#ifdef CONFIG_SMP
        unsigned int eax, ebx, ecx, edx, sub_index;
        unsigned int ht_mask_width, core_plus_mask_width;
        unsigned int core_select_mask, core_level_siblings;
@@ -132,6 +133,7 @@ void __cpuinit detect_extended_topology(struct cpuinfo_x86 *c)
                printk(KERN_INFO  "CPU: Processor Core ID: %d\n",
                       c->cpu_core_id);
        return;
+#endif
 }
 
 #ifdef CONFIG_X86_PAT