[patch 16/34] hexagon: Use generic idle loop

[Thomas Gleixner]

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Richard Kuo <rkuo@xxxxxxxxxxxxxx>
---
 arch/hexagon/Kconfig          |    1 +
 arch/hexagon/kernel/process.c |   23 +++--------------------
 arch/hexagon/kernel/smp.c     |    2 +-
 3 files changed, 5 insertions(+), 21 deletions(-)

Index: linux-2.6/arch/hexagon/Kconfig
===================================================================
--- linux-2.6.orig/arch/hexagon/Kconfig
+++ linux-2.6/arch/hexagon/Kconfig
@@ -24,6 +24,7 @@ config HEXAGON
 	select NO_IOPORT
 	select GENERIC_IOMAP
 	select GENERIC_SMP_IDLE_THREAD
+	select GENERIC_IDLE_LOOP
 	select STACKTRACE_SUPPORT
 	select KTIME_SCALAR
 	select GENERIC_CLOCKEVENTS
Index: linux-2.6/arch/hexagon/kernel/process.c
===================================================================
--- linux-2.6.orig/arch/hexagon/kernel/process.c
+++ linux-2.6/arch/hexagon/kernel/process.c
@@ -51,28 +51,11 @@ void start_thread(struct pt_regs *regs, 
  *  If hardware or VM offer wait termination even though interrupts
  *  are disabled.
  */
-static void default_idle(void)
+void arch_cpu_idle(void)
 {
 	__vmwait();
-}
-
-void (*idle_sleep)(void) = default_idle;
-
-void cpu_idle(void)
-{
-	while (1) {
-		tick_nohz_idle_enter();
-		local_irq_disable();
-		while (!need_resched()) {
-			idle_sleep();
-			/*  interrupts wake us up, but aren't serviced  */
-			local_irq_enable();	/* service interrupt   */
-			local_irq_disable();
-		}
-		local_irq_enable();
-		tick_nohz_idle_exit();
-		schedule();
-	}
+	/*  interrupts wake us up, but irqs are still disabled */
+	local_irq_enable();
 }
 
 /*
Index: linux-2.6/arch/hexagon/kernel/smp.c
===================================================================
--- linux-2.6.orig/arch/hexagon/kernel/smp.c
+++ linux-2.6/arch/hexagon/kernel/smp.c
@@ -184,7 +184,7 @@ void __cpuinit start_secondary(void)
 
 	local_irq_enable();
 
-	cpu_idle();
+	cpu_startup_entry(CPUHP_ONLINE);
 }
 
 


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