[patch 15/34] h8300: Use generic idle loop

[Thomas Gleixner]

Use the core idle poll function instead of the private one

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
---
 arch/h8300/Kconfig          |    1 +
 arch/h8300/kernel/process.c |   35 ++++-------------------------------
 2 files changed, 5 insertions(+), 31 deletions(-)

Index: linux-2.6/arch/h8300/Kconfig
===================================================================
--- linux-2.6.orig/arch/h8300/Kconfig
+++ linux-2.6/arch/h8300/Kconfig
@@ -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
Index: linux-2.6/arch/h8300/kernel/process.c
===================================================================
--- linux-2.6.orig/arch/h8300/kernel/process.c
+++ linux-2.6/arch/h8300/kernel/process.c
@@ -53,40 +53,13 @@ asmlinkage void ret_from_kernel_thread(v
  * 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();
+	local_irq_enable();
+	/* XXX: race here! What if need_resched() gets set now? */
+	__asm__("sleep");
 }
 #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)
 {


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