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Commit e46746cd authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

c6x: Use generic idle loop 



Signed-off-by: default avatarThomas 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: default avatarCc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Mark Salter <msalter@redhat.com>
Link: http://lkml.kernel.org/r/20130321215234.087033904@linutronix.de


Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 25d67f86

arch/c6x/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ config C6X 
	select OF_EARLY_FLATTREE

	select GENERIC_CLOCKEVENTS

	select MODULES_USE_ELF_RELA

	select GENERIC_IDLE_LOOP



config MMU

	def_bool n

arch/c6x/kernel/process.c

+1 −27
Original line number Diff line number Diff line
@@ -33,7 +33,7 @@ extern asmlinkage void ret_from_kernel_thread(void); 
void (*pm_power_off)(void);

EXPORT_SYMBOL(pm_power_off);



static void c6x_idle(void)

void arch_cpu_idle(void)

{

	unsigned long tmp;
@@ -49,32 +49,6 @@ static void c6x_idle(void) 
		      : "=b"(tmp));

}



/*

 * The idle loop for C64x

 */

void cpu_idle(void)

{

	/* endless idle loop with no priority at all */

	while (1) {

		tick_nohz_idle_enter();

		rcu_idle_enter();

		while (1) {

			local_irq_disable();

			if (need_resched()) {

				local_irq_enable();

				break;

			}

			c6x_idle(); /* enables local irqs */

		}

		rcu_idle_exit();

		tick_nohz_idle_exit();



		preempt_enable_no_resched();

		schedule();

		preempt_disable();

	}

}



static void halt_loop(void)

{

	printk(KERN_EMERG "System Halted, OK to turn off power\n");