From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936074Ab3DHU05 (ORCPT ); Mon, 8 Apr 2013 16:26:57 -0400 Received: from terminus.zytor.com ([198.137.202.10]:40725 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S936007Ab3DHU0z (ORCPT ); Mon, 8 Apr 2013 16:26:55 -0400 Date: Mon, 8 Apr 2013 13:26:06 -0700 From: tip-bot for Thomas Gleixner Message-ID: Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@kernel.org, rusty@rustcorp.com.au, torvalds@linux-foundation.org, peterz@infradead.org, srivatsa.bhat@linux.vnet.ibm.com, paulmck@linux.vnet.ibm.com, tglx@linutronix.de, ysato@users.sourceforge.jp, magnus.damm@gmail.com Reply-To: mingo@kernel.org, hpa@zytor.com, linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, rusty@rustcorp.com.au, peterz@infradead.org, srivatsa.bhat@linux.vnet.ibm.com, paulmck@linux.vnet.ibm.com, tglx@linutronix.de, magnus.damm@gmail.com, ysato@users.sourceforge.jp In-Reply-To: <20130321215234.277153345@linutronix.de> References: <20130321215234.277153345@linutronix.de> To: linux-tip-commits@vger.kernel.org Subject: [tip:smp/hotplug] h8300: Use generic idle loop Git-Commit-ID: 0d24260c9e27fc1de20c72669bcc387767a1c170 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (terminus.zytor.com [127.0.0.1]); Mon, 08 Apr 2013 13:26:12 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 0d24260c9e27fc1de20c72669bcc387767a1c170 Gitweb: http://git.kernel.org/tip/0d24260c9e27fc1de20c72669bcc387767a1c170 Author: Thomas Gleixner AuthorDate: Thu, 21 Mar 2013 22:49:45 +0100 Committer: Thomas Gleixner CommitDate: Mon, 8 Apr 2013 17:39:25 +0200 h8300: Use generic idle loop Use the core idle poll function instead of the private one Signed-off-by: Thomas Gleixner Cc: Linus Torvalds Cc: Rusty Russell Cc: Paul McKenney Cc: Peter Zijlstra Reviewed-by: Cc: Srivatsa S. Bhat Cc: Magnus Damm Cc: Yoshinori Sato Link: http://lkml.kernel.org/r/20130321215234.277153345@linutronix.de Signed-off-by: Thomas Gleixner --- arch/h8300/Kconfig | 1 + arch/h8300/kernel/process.c | 35 ++++------------------------------- 2 files changed, 5 insertions(+), 31 deletions(-) diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig index 79250de..5374975 100644 --- a/arch/h8300/Kconfig +++ b/arch/h8300/Kconfig @@ -8,6 +8,7 @@ config H8300 select VIRT_TO_BUS select ARCH_WANT_IPC_PARSE_VERSION select GENERIC_IRQ_SHOW + select GENERIC_IDLE_LOOP select GENERIC_CPU_DEVICES select MODULES_USE_ELF_RELA select OLD_SIGSUSPEND3 diff --git a/arch/h8300/kernel/process.c b/arch/h8300/kernel/process.c index b609f63..a17d2cd 100644 --- a/arch/h8300/kernel/process.c +++ b/arch/h8300/kernel/process.c @@ -53,40 +53,13 @@ asmlinkage void ret_from_kernel_thread(void); * The idle loop on an H8/300.. */ #if !defined(CONFIG_H8300H_SIM) && !defined(CONFIG_H8S_SIM) -static void default_idle(void) +void arch_cpu_idle(void) { - local_irq_disable(); - if (!need_resched()) { - local_irq_enable(); - /* XXX: race here! What if need_resched() gets set now? */ - __asm__("sleep"); - } else - local_irq_enable(); -} -#else -static void default_idle(void) -{ - cpu_relax(); + local_irq_enable(); + /* XXX: race here! What if need_resched() gets set now? */ + __asm__("sleep"); } #endif -void (*idle)(void) = default_idle; - -/* - * 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) -{ - while (1) { - rcu_idle_enter(); - while (!need_resched()) - idle(); - rcu_idle_exit(); - schedule_preempt_disabled(); - } -} void machine_restart(char * __unused) {