powerpc: Remove unused cpu_idle_wait()

cpuidle uses a generic function now. Remove the cruft.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Link: http://lkml.kernel.org/r/20120507175652.330322737@linutronix.de

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index c815535083664096fb475c0fdff596c42fe36784..296e4f997974e522c7c940a0528d86da2863f702 100644 (file)
--- a/arch/powerpc/Kconfig
+++ b/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

diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index 8e2d0371fe1e71f0460dc1e28f7ba2d2a193aec0..48a26d379222ddee0be8d4e9e1a5fb06d18a71eb 100644 (file)
--- a/arch/powerpc/include/asm/processor.h
+++ b/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);

diff --git a/arch/powerpc/kernel/idle.c b/arch/powerpc/kernel/idle.c
index 04d79093d7a13449e58d39c6a5f5b94b890d14e1..2099d9a879e84ac43e6333f3d28d87fdd799c686 100644 (file)
--- a/arch/powerpc/kernel/idle.c
+++ b/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