From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754594Ab2EGR7y (ORCPT ); Mon, 7 May 2012 13:59:54 -0400 Received: from www.linutronix.de ([62.245.132.108]:41391 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753561Ab2EGR7u (ORCPT ); Mon, 7 May 2012 13:59:50 -0400 Message-Id: <20120507175652.260797846@linutronix.de> User-Agent: quilt/0.48-1 Date: Mon, 07 May 2012 17:59:49 -0000 From: Thomas Gleixner To: LKML Cc: Peter Zijlstra , Russell King Subject: [patch 5/8] arm: Remove unused cpu_idle_wait() References: <20120507175450.513667947@linutronix.de> Content-Disposition: inline; filename=arm-use-kick_all_cpus_sync.patch X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org cpuidle uses a generic function now. Remove the unused code. Signed-off-by: Thomas Gleixner Cc: Russell King --- arch/arm/Kconfig | 3 --- arch/arm/include/asm/processor.h | 2 -- arch/arm/kernel/process.c | 20 -------------------- 3 files changed, 25 deletions(-) Index: tip/arch/arm/Kconfig =================================================================== --- tip.orig/arch/arm/Kconfig +++ tip/arch/arm/Kconfig @@ -160,9 +160,6 @@ config ARCH_HAS_CPUFREQ and that the relevant menu configurations are displayed for it. -config ARCH_HAS_CPU_IDLE_WAIT - def_bool y - config GENERIC_HWEIGHT bool default y Index: tip/arch/arm/include/asm/processor.h =================================================================== --- tip.orig/arch/arm/include/asm/processor.h +++ tip/arch/arm/include/asm/processor.h @@ -88,8 +88,6 @@ unsigned long get_wchan(struct task_stru #define cpu_relax() barrier() #endif -void cpu_idle_wait(void); - /* * Create a new kernel thread */ Index: tip/arch/arm/kernel/process.c =================================================================== --- tip.orig/arch/arm/kernel/process.c +++ tip/arch/arm/kernel/process.c @@ -157,26 +157,6 @@ EXPORT_SYMBOL(pm_power_off); void (*arm_pm_restart)(char str, const char *cmd) = null_restart; EXPORT_SYMBOL_GPL(arm_pm_restart); -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); - /* * This is our default idle handler. */