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Commit 25d67f86 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

bfin: 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: Mike Frysinger <vapier@gentoo.org>
Link: http://lkml.kernel.org/r/20130321215234.014923303@linutronix.de


Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 01426478

arch/blackfin/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -41,6 +41,7 @@ config BLACKFIN 
	select USE_GENERIC_SMP_HELPERS if SMP

	select HAVE_NMI_WATCHDOG if NMI_WATCHDOG

	select GENERIC_SMP_IDLE_THREAD

	select GENERIC_IDLE_LOOP

	select ARCH_USES_GETTIMEOFFSET if !GENERIC_CLOCKEVENTS

	select HAVE_MOD_ARCH_SPECIFIC

	select MODULES_USE_ELF_RELA

arch/blackfin/kernel/process.c

+6 −26
Original line number Diff line number Diff line
@@ -46,15 +46,14 @@ EXPORT_SYMBOL(pm_power_off); 
 * The idle loop on BFIN

 */

#ifdef CONFIG_IDLE_L1

static void default_idle(void)__attribute__((l1_text));

void cpu_idle(void)__attribute__((l1_text));

void arch_cpu_idle(void)__attribute__((l1_text));

#endif



/*

 * This is our default idle handler.  We need to disable

 * interrupts here to ensure we don't miss a wakeup call.

 */

static void default_idle(void)

void arch_cpu_idle(void)

{

#ifdef CONFIG_IPIPE

	ipipe_suspend_domain();
@@ -66,31 +65,12 @@ static void default_idle(void) 
	hard_local_irq_enable();

}



/*

 * The idle thread.  We try to conserve power, while trying to keep

 * overall latency low.  The architecture specific idle is passed

 * a value to indicate the level of "idleness" of the system.

 */

void cpu_idle(void)

#ufdef CONFIG_HOTPLUG_CPU

void arch_cpu_idle_dead(void)

{

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

	while (1) {



#ifdef CONFIG_HOTPLUG_CPU

		if (cpu_is_offline(smp_processor_id()))

	cpu_die();

#endif

		tick_nohz_idle_enter();

		rcu_idle_enter();

		while (!need_resched())

			default_idle();

		rcu_idle_exit();

		tick_nohz_idle_exit();

		preempt_enable_no_resched();

		schedule();

		preempt_disable();

	}

}

#endif



/*

 * Do necessary setup to start up a newly executed thread.

arch/blackfin/mach-common/smp.c

+1 −1
Original line number Diff line number Diff line
@@ -335,7 +335,7 @@ void __cpuinit secondary_start_kernel(void) 
	 */

	calibrate_delay();



	cpu_idle();

	cpu_startup_entry(CPUHP_ONLINE);

}



void __init smp_prepare_boot_cpu(void)