The condition statement in default_idle had the conjunctions backwards.
Instead of && it had || so the idle thread would never be preempted.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

Index: linux-2.6.16-rt23/arch/x86_64/kernel/process.c
===================================================================
--- linux-2.6.16-rt23.orig/arch/x86_64/kernel/process.c	2006-05-26 10:41:30.000000000 -0400
+++ linux-2.6.16-rt23/arch/x86_64/kernel/process.c	2006-05-26 10:41:44.000000000 -0400
@@ -120,9 +120,9 @@ void default_idle(void)
 
 	clear_thread_flag(TIF_POLLING_NRFLAG);
 	smp_mb__after_clear_bit();
-	while (!need_resched() || !need_resched_delayed()) {
+	while (!need_resched() && !need_resched_delayed()) {
 		local_irq_disable();
-		if (!need_resched() || !need_resched_delayed())
+		if (!need_resched() && !need_resched_delayed())
 			safe_halt();
 		else
 			local_irq_enable();

--