[patch 6/8] powerpc: Remove unused cpu_idle_wait()

[Thomas Gleixner]

cpuidle uses a generic function now. Remove the cruft.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
---
 arch/powerpc/Kconfig                 |    4 ----
 arch/powerpc/include/asm/processor.h |    1 -
 arch/powerpc/kernel/idle.c           |   19 -------------------
 3 files changed, 24 deletions(-)

Index: tip/arch/powerpc/Kconfig
===================================================================
--- tip.orig/arch/powerpc/Kconfig
+++ tip/arch/powerpc/Kconfig
@@ -87,10 +87,6 @@ config ARCH_HAS_ILOG2_U64
 	bool
 	default y if 64BIT
 
-config ARCH_HAS_CPU_IDLE_WAIT
-	bool
-	default y
-
 config GENERIC_HWEIGHT
 	bool
 	default y
Index: tip/arch/powerpc/include/asm/processor.h
===================================================================
--- tip.orig/arch/powerpc/include/asm/processor.h
+++ tip/arch/powerpc/include/asm/processor.h
@@ -386,7 +386,6 @@ extern unsigned long cpuidle_disable;
 enum idle_boot_override {IDLE_NO_OVERRIDE = 0, IDLE_POWERSAVE_OFF};
 
 extern int powersave_nap;	/* set if nap mode can be used in idle loop */
-void cpu_idle_wait(void);
 
 #ifdef CONFIG_PSERIES_IDLE
 extern void update_smt_snooze_delay(int snooze);
Index: tip/arch/powerpc/kernel/idle.c
===================================================================
--- tip.orig/arch/powerpc/kernel/idle.c
+++ tip/arch/powerpc/kernel/idle.c
@@ -113,25 +113,6 @@ void cpu_idle(void)
 	}
 }
 
-static void do_nothing(void *unused)
-{
-}
-
-/*
- * cpu_idle_wait - Used to ensure that all the CPUs come out of the old
- * idle loop and start using the new idle loop.
- * Required while changing idle handler on SMP systems.
- * Caller must have changed idle handler to the new value before the call.
- * This window may be larger on shared systems.
- */
-void cpu_idle_wait(void)
-{
-	smp_mb();
-	/* kick all the CPUs so that they exit out of pm_idle */
-	smp_call_function(do_nothing, NULL, 1);
-}
-EXPORT_SYMBOL_GPL(cpu_idle_wait);
-
 int powersave_nap;
 
 #ifdef CONFIG_SYSCTL


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