--- zzzz-none-000/linux-2.6.28.10/lib/smp_processor_id.c	2009-05-02 18:54:43.000000000 +0000
+++ puma5-6360-529/linux-2.6.28.10/lib/smp_processor_id.c	2010-03-12 13:04:21.000000000 +0000
@@ -9,8 +9,9 @@
 
 notrace unsigned int debug_smp_processor_id(void)
 {
-	unsigned long preempt_count = preempt_count();
 	int this_cpu = raw_smp_processor_id();
+#ifndef CONFIG_MIPS_MT_SMTC
+	unsigned long preempt_count = preempt_count();
 
 	if (likely(preempt_count))
 		goto out;
@@ -43,11 +44,16 @@
 			"code: %s/%d\n",
 			preempt_count() - 1, current->comm, current->pid);
 	print_symbol("caller is %s\n", (long)__builtin_return_address(0));
+
+	printk(KERN_ERR "current->cpus_allowed:0x%x |this_cpu: %d |cpumask_of_cpu(this_cpu):0x%x |system_state:%d\n",
+            current->cpus_allowed, this_cpu, cpumask_of_cpu(this_cpu), system_state);
+
 	dump_stack();
 
 out_enable:
 	preempt_enable_no_resched_notrace();
 out:
+#endif /*--- #ifndef CONFIG_MIPS_MT_SMTC ---*/
 	return this_cpu;
 }