From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935981Ab3DHUZj (ORCPT ); Mon, 8 Apr 2013 16:25:39 -0400 Received: from terminus.zytor.com ([198.137.202.10]:40681 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935708Ab3DHUZi (ORCPT ); Mon, 8 Apr 2013 16:25:38 -0400 Date: Mon, 8 Apr 2013 13:24:54 -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, dhowells@redhat.com, tglx@linutronix.de, 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, dhowells@redhat.com, tglx@linutronix.de, magnus.damm@gmail.com In-Reply-To: <20130321215234.217235264@linutronix.de> References: <20130321215234.217235264@linutronix.de> To: linux-tip-commits@vger.kernel.org Subject: [tip:smp/hotplug] frv: Use generic idle loop Git-Commit-ID: ccf8e78fe2a7e92b6d43de8023786b9dd199aab1 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 13:24:59 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: ccf8e78fe2a7e92b6d43de8023786b9dd199aab1 Gitweb: http://git.kernel.org/tip/ccf8e78fe2a7e92b6d43de8023786b9dd199aab1 Author: Thomas Gleixner AuthorDate: Thu, 21 Mar 2013 22:49:44 +0100 Committer: Thomas Gleixner CommitDate: Mon, 8 Apr 2013 17:39:25 +0200 frv: Use generic idle loop 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: David Howells Link: http://lkml.kernel.org/r/20130321215234.217235264@linutronix.de Signed-off-by: Thomas Gleixner --- arch/frv/Kconfig | 1 + arch/frv/kernel/process.c | 27 +++++---------------------- 2 files changed, 6 insertions(+), 22 deletions(-) diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig index 2ce731f..0d998db 100644 --- a/arch/frv/Kconfig +++ b/arch/frv/Kconfig @@ -8,6 +8,7 @@ config FRV select HAVE_GENERIC_HARDIRQS select VIRT_TO_BUS select GENERIC_IRQ_SHOW + select GENERIC_IDLE_LOOP select HAVE_DEBUG_BUGVERBOSE select ARCH_HAVE_NMI_SAFE_CMPXCHG select GENERIC_CPU_DEVICES diff --git a/arch/frv/kernel/process.c b/arch/frv/kernel/process.c index 23916b2..5d40aeb77 100644 --- a/arch/frv/kernel/process.c +++ b/arch/frv/kernel/process.c @@ -59,29 +59,12 @@ static void core_sleep_idle(void) mb(); } -void (*idle)(void) = core_sleep_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) +void arch_cpu_idle(void) { - /* endless idle loop with no priority at all */ - while (1) { - rcu_idle_enter(); - while (!need_resched()) { - check_pgt_cache(); - - if (!frv_dma_inprogress && idle) - idle(); - } - rcu_idle_exit(); - - schedule_preempt_disabled(); - } + if (!frv_dma_inprogress) + core_sleep_idle(); + else + local_irq_enable(); } void machine_restart(char * __unused)