microblaze: Use generic idle loop

The microblaze idle loop provides a polling and a non polling version,
which are suprisingly both polling, just with slightly different
instrumentation. Remove them and use the generic poller.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Reviewed-by: Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Michal Simek <monstr@monstr.eu>
Link: http://lkml.kernel.org/r/20130321215234.687590459@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 0 insertions, 53 deletions

diff --git a/arch/microblaze/kernel/process.c b/arch/microblaze/kernel/process.c
index 7c36171771f2..7cce2e9c1719 100644
--- a/arch/microblaze/kernel/process.c
+++ b/arch/microblaze/kernel/process.c
@@ -44,59 +44,6 @@ void show_regs(struct pt_regs *regs)
 void (*pm_power_off)(void) = NULL;
 EXPORT_SYMBOL(pm_power_off);
 
-static int hlt_counter = 1;
-
-static int __init nohlt_setup(char *__unused)
-{
-	hlt_counter = 1;
-	return 1;
-}
-__setup("nohlt", nohlt_setup);
-
-static int __init hlt_setup(char *__unused)
-{
-	hlt_counter = 0;
-	return 1;
-}
-__setup("hlt", hlt_setup);
-
-void default_idle(void)
-{
-	if (likely(hlt_counter)) {
-		local_irq_disable();
-		stop_critical_timings();
-		cpu_relax();
-		start_critical_timings();
-		local_irq_enable();
-	} else {
-		clear_thread_flag(TIF_POLLING_NRFLAG);
-		smp_mb__after_clear_bit();
-		local_irq_disable();
-		while (!need_resched())
-			cpu_sleep();
-		local_irq_enable();
-		set_thread_flag(TIF_POLLING_NRFLAG);
-	}
-}
-
-void cpu_idle(void)
-{
-	set_thread_flag(TIF_POLLING_NRFLAG);
-
-	/* endless idle loop with no priority at all */
-	while (1) {
-		tick_nohz_idle_enter();
-		rcu_idle_enter();
-		while (!need_resched())
-			default_idle();
-		rcu_idle_exit();
-		tick_nohz_idle_exit();
-
-		schedule_preempt_disabled();
-		check_pgt_cache();
-	}
-}
-
 void flush_thread(void)
 {
 }