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Commit 0d24260c authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

h8300: Use generic idle loop 



Use the core idle poll function instead of the private one

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: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20130321215234.277153345@linutronix.de


Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent ccf8e78f

arch/h8300/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ config H8300 
	select VIRT_TO_BUS

	select ARCH_WANT_IPC_PARSE_VERSION

	select GENERIC_IRQ_SHOW

	select GENERIC_IDLE_LOOP

	select GENERIC_CPU_DEVICES

	select MODULES_USE_ELF_RELA

	select OLD_SIGSUSPEND3

arch/h8300/kernel/process.c

+4 −31
Original line number Diff line number Diff line
@@ -53,40 +53,13 @@ asmlinkage void ret_from_kernel_thread(void); 
 * The idle loop on an H8/300..

 */

#if !defined(CONFIG_H8300H_SIM) && !defined(CONFIG_H8S_SIM)

static void default_idle(void)

void arch_cpu_idle(void)

{

	local_irq_disable();

	if (!need_resched()) {

	local_irq_enable();

	/* XXX: race here! What if need_resched() gets set now? */

	__asm__("sleep");

	} else

		local_irq_enable();

}

#else

static void default_idle(void)

{

	cpu_relax();

}

#endif

void (*idle)(void) = default_idle;



/*

 * The idle thread. There's no useful work to be

 * done, so just try to conserve power and have a

 * low exit latency (ie sit in a loop waiting for

 * somebody to say that they'd like to reschedule)

 */

void cpu_idle(void)

{

	while (1) {

		rcu_idle_enter();

		while (!need_resched())

			idle();

		rcu_idle_exit();

		schedule_preempt_disabled();

	}

}



void machine_restart(char * __unused)

{