--- linux-2.6.1-mm3/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c.orig	2004-01-14 18:15:05.891246656 +0100
+++ linux-2.6.1-mm3/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c	2004-01-14 18:27:35.876231608 +0100
@@ -68,7 +68,11 @@
 	cpus_allowed = current->cpus_allowed;
 
 	/* only run on CPU to be set, or on its sibling */
+#ifdef CONFIG_SMP
 	affected_cpu_map = cpu_sibling_map[cpu];
+#else
+	affected_cpu_map = cpumask_of_cpu(cpu);
+#endif
 	set_cpus_allowed(current, affected_cpu_map);
         BUG_ON(!cpu_isset(smp_processor_id(), affected_cpu_map));