From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932774Ab3CUV6i (ORCPT ); Thu, 21 Mar 2013 17:58:38 -0400 Received: from www.linutronix.de ([62.245.132.108]:33161 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932262Ab3CUVxN (ORCPT ); Thu, 21 Mar 2013 17:53:13 -0400 Message-Id: <20130321215234.470547189@linutronix.de> User-Agent: quilt/0.48-1 Date: Thu, 21 Mar 2013 21:53:10 -0000 From: Thomas Gleixner 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 , Hirokazu Takata Subject: [patch 18/34] m32r: Use generic idle loop References: <20130321214930.752934102@linutronix.de> Content-Disposition: inline; filename=m32r-use-generic-idle-loop.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 Replace the private poller. Signed-off-by: Thomas Gleixner Cc: Hirokazu Takata --- arch/m32r/Kconfig | 1 + arch/m32r/kernel/process.c | 18 ------------------ arch/m32r/kernel/smpboot.c | 2 +- 3 files changed, 2 insertions(+), 19 deletions(-) Index: linux-2.6/arch/m32r/Kconfig =================================================================== --- linux-2.6.orig/arch/m32r/Kconfig +++ linux-2.6/arch/m32r/Kconfig @@ -13,6 +13,7 @@ config M32R select VIRT_TO_BUS select GENERIC_IRQ_PROBE select GENERIC_IRQ_SHOW + select GENERIC_IDLE_LOOP select GENERIC_ATOMIC64 select ARCH_USES_GETTIMEOFFSET select MODULES_USE_ELF_RELA Index: linux-2.6/arch/m32r/kernel/process.c =================================================================== --- linux-2.6.orig/arch/m32r/kernel/process.c +++ linux-2.6/arch/m32r/kernel/process.c @@ -47,24 +47,6 @@ unsigned long thread_saved_pc(struct tas void (*pm_power_off)(void) = NULL; EXPORT_SYMBOL(pm_power_off); -/* - * The idle thread. There's no useful work to be - * done, so just try to conserve power and have a - * low exit latency (ie sit in a loop waiting for - * somebody to say that they'd like to reschedule) - */ -void cpu_idle (void) -{ - /* endless idle loop with no priority at all */ - while (1) { - rcu_idle_enter(); - while (!need_resched()) - cpu_relax(); - rcu_idle_exit(); - schedule_preempt_disabled(); - } -} - void machine_restart(char *__unused) { #if defined(CONFIG_PLAT_MAPPI3) Index: linux-2.6/arch/m32r/kernel/smpboot.c =================================================================== --- linux-2.6.orig/arch/m32r/kernel/smpboot.c +++ linux-2.6/arch/m32r/kernel/smpboot.c @@ -432,7 +432,7 @@ int __init start_secondary(void *unused) */ local_flush_tlb_all(); - cpu_idle(); + cpu_startup_entry(CPUHP_ONLINE); return 0; }