From bbe78cbd729f85c4da6e04f45c8b2de43c3573f1 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 7 May 2012 17:59:50 +0000 Subject: [PATCH] ia64: Remove unused cpu_idle_wait() IA64 does not set CONFIG_ARCH_HAVE_IDLE_WAIT and cpuidle uses a generic function now. Remove the unused code. Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra Cc: Tony Luck Link: http://lkml.kernel.org/r/20120507175652.392394511@linutronix.de --- arch/ia64/include/asm/processor.h | 1 - arch/ia64/kernel/process.c | 20 -------------------- 2 files changed, 21 deletions(-) diff --git a/arch/ia64/include/asm/processor.h b/arch/ia64/include/asm/processor.h index 483f6c6..f92f67a 100644 --- a/arch/ia64/include/asm/processor.h +++ b/arch/ia64/include/asm/processor.h @@ -723,7 +723,6 @@ extern unsigned long boot_option_idle_override; enum idle_boot_override {IDLE_NO_OVERRIDE=0, IDLE_HALT, IDLE_FORCE_MWAIT, IDLE_NOMWAIT, IDLE_POLL}; -void cpu_idle_wait(void); void default_idle(void); #define ia64_platform_is(x) (strcmp(x, platform_name) == 0) diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c index ce74e14..5e0e86d 100644 --- a/arch/ia64/kernel/process.c +++ b/arch/ia64/kernel/process.c @@ -273,26 +273,6 @@ static inline void play_dead(void) } #endif /* CONFIG_HOTPLUG_CPU */ -static void do_nothing(void *unused) -{ -} - -/* - * cpu_idle_wait - Used to ensure that all the CPUs discard old value of - * pm_idle and update to new pm_idle value. Required while changing pm_idle - * handler on SMP systems. - * - * Caller must have changed pm_idle to the new value before the call. Old - * pm_idle value will not be used by any CPU after the return of this function. - */ -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); - void __attribute__((noreturn)) cpu_idle (void) { -- 2.7.4