From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Gleixner Subject: [patch 34/34] xtensa: Use generic idle loop Date: Thu, 21 Mar 2013 21:53:24 -0000 Message-ID: <20130321215235.546600507@linutronix.de> References: <20130321214930.752934102@linutronix.de> Return-path: Content-Disposition: inline; filename=xtensa-use-generic-idle-loop.patch Sender: linux-kernel-owner@vger.kernel.org To: LKML Cc: linux-arch@vger.kernel.org, Linus Torvalds , Andrew Morton , Rusty Russell , Paul McKenney , Ingo Molnar , Peter Zijlstra , "Srivatsa S. Bhat" , Magnus Damm , Chris Zankel List-Id: linux-arch.vger.kernel.org Unfortunately this arch does not compile at all :( Signed-off-by: Thomas Gleixner Cc: Chris Zankel --- arch/xtensa/Kconfig | 1 + arch/xtensa/kernel/process.c | 14 ++------------ 2 files changed, 3 insertions(+), 12 deletions(-) Index: linux-2.6/arch/xtensa/Kconfig =================================================================== --- linux-2.6.orig/arch/xtensa/Kconfig +++ linux-2.6/arch/xtensa/Kconfig @@ -19,6 +19,7 @@ config XTENSA select CLONE_BACKWARDS select IRQ_DOMAIN select HAVE_OPROFILE + select GENERIC_IDLE_LOOP help Xtensa processors are 32-bit RISC machines designed by Tensilica primarily for embedded systems. These processors are both Index: linux-2.6/arch/xtensa/kernel/process.c =================================================================== --- linux-2.6.orig/arch/xtensa/kernel/process.c +++ linux-2.6/arch/xtensa/kernel/process.c @@ -105,19 +105,9 @@ void coprocessor_flush_all(struct thread /* * Powermanagement idle function, if any is provided by the platform. */ - -void cpu_idle(void) +void arch_cpu_idle(void) { - local_irq_enable(); - - /* endless idle loop with no priority at all */ - while (1) { - rcu_idle_enter(); - while (!need_resched()) - platform_idle(); - rcu_idle_exit(); - schedule_preempt_disabled(); - } + platform_idle(); } /* From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from www.linutronix.de ([62.245.132.108]:33314 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752082Ab3CUVx0 (ORCPT ); Thu, 21 Mar 2013 17:53:26 -0400 Message-ID: <20130321215235.546600507@linutronix.de> Date: Thu, 21 Mar 2013 21:53:24 -0000 From: Thomas Gleixner Subject: [patch 34/34] xtensa: Use generic idle loop References: <20130321214930.752934102@linutronix.de> Content-Disposition: inline; filename=xtensa-use-generic-idle-loop.patch Sender: linux-arch-owner@vger.kernel.org List-ID: To: LKML Cc: linux-arch@vger.kernel.org, Linus Torvalds , Andrew Morton , Rusty Russell , Paul McKenney , Ingo Molnar , Peter Zijlstra , "Srivatsa S. Bhat" , Magnus Damm , Chris Zankel Message-ID: <20130321215324.KfAI86gCPisHfgxGN1QB-qPUunYDq9-wYP2Ay3SoS9M@z> Unfortunately this arch does not compile at all :( Signed-off-by: Thomas Gleixner Cc: Chris Zankel --- arch/xtensa/Kconfig | 1 + arch/xtensa/kernel/process.c | 14 ++------------ 2 files changed, 3 insertions(+), 12 deletions(-) Index: linux-2.6/arch/xtensa/Kconfig =================================================================== --- linux-2.6.orig/arch/xtensa/Kconfig +++ linux-2.6/arch/xtensa/Kconfig @@ -19,6 +19,7 @@ config XTENSA select CLONE_BACKWARDS select IRQ_DOMAIN select HAVE_OPROFILE + select GENERIC_IDLE_LOOP help Xtensa processors are 32-bit RISC machines designed by Tensilica primarily for embedded systems. These processors are both Index: linux-2.6/arch/xtensa/kernel/process.c =================================================================== --- linux-2.6.orig/arch/xtensa/kernel/process.c +++ linux-2.6/arch/xtensa/kernel/process.c @@ -105,19 +105,9 @@ void coprocessor_flush_all(struct thread /* * Powermanagement idle function, if any is provided by the platform. */ - -void cpu_idle(void) +void arch_cpu_idle(void) { - local_irq_enable(); - - /* endless idle loop with no priority at all */ - while (1) { - rcu_idle_enter(); - while (!need_resched()) - platform_idle(); - rcu_idle_exit(); - schedule_preempt_disabled(); - } + platform_idle(); } /*