diff -ruN linux-original/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c linux/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c
--- linux-original/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c	2004-05-13 16:52:02.000000000 +0200
+++ linux/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c	2004-05-13 19:36:47.629852152 +0200
@@ -68,11 +68,7 @@
 	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));
 
@@ -273,11 +269,7 @@
 
 	/* only run on CPU to be set, or on its sibling */
 	cpus_allowed = current->cpus_allowed;
-#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));