From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757306Ab2BHBo4 (ORCPT ); Tue, 7 Feb 2012 20:44:56 -0500 Received: from mail-bk0-f46.google.com ([209.85.214.46]:63034 "EHLO mail-bk0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757285Ab2BHBoz (ORCPT ); Tue, 7 Feb 2012 20:44:55 -0500 Date: Wed, 8 Feb 2012 05:44:52 +0400 From: Anton Vorontsov To: Ingo Molnar , Peter Zijlstra , Dave Jones , Russell King Cc: Oleg Nesterov , Benjamin Herrenschmidt , "Paul E. McKenney" , Nicolas Pitre , Mike Chan , Todd Poynor , cpufreq@vger.kernel.org, kernel-team@android.com, linaro-kernel@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 4/4] ARM: Move leds idle start/stop calls to sched idle notifiers Message-ID: <20120208014452.GD459@panacea> References: <20120208013959.GA24535@panacea> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20120208013959.GA24535@panacea> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Todd Poynor Signed-off-by: Todd Poynor Signed-off-by: Anton Vorontsov --- arch/arm/kernel/leds.c | 25 ++++++++++++++++++++++++- arch/arm/kernel/process.c | 3 --- 2 files changed, 24 insertions(+), 4 deletions(-) diff --git a/arch/arm/kernel/leds.c b/arch/arm/kernel/leds.c index 1911dae..fbc30d4 100644 --- a/arch/arm/kernel/leds.c +++ b/arch/arm/kernel/leds.c @@ -9,6 +9,8 @@ */ #include #include +#include +#include #include #include #include @@ -103,6 +105,25 @@ static struct syscore_ops leds_syscore_ops = { .resume = leds_resume, }; +static int leds_idle_notifier(struct notifier_block *nb, unsigned long val, + void *data) +{ + switch (val) { + case SCHED_IDLE_START: + leds_event(led_idle_start); + break; + case SCHED_IDLE_END: + leds_event(led_idle_end); + break; + } + + return 0; +} + +static struct notifier_block leds_idle_nb = { + .notifier_call = leds_idle_notifier, +}; + static int __init leds_init(void) { int ret; @@ -111,8 +132,10 @@ static int __init leds_init(void) ret = device_register(&leds_device); if (ret == 0) ret = device_create_file(&leds_device, &dev_attr_event); - if (ret == 0) + if (ret == 0) { register_syscore_ops(&leds_syscore_ops); + sched_idle_notifier_register(&leds_idle_nb); + } return ret; } diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index f2bac2d..f4b53aa 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -33,7 +33,6 @@ #include #include -#include #include #include #include @@ -207,7 +206,6 @@ void cpu_idle(void) /* endless idle loop with no priority at all */ while (1) { sched_idle_enter(); - leds_event(led_idle_start); while (!need_resched()) { #ifdef CONFIG_HOTPLUG_CPU if (cpu_is_offline(smp_processor_id())) @@ -235,7 +233,6 @@ void cpu_idle(void) local_irq_enable(); } } - leds_event(led_idle_end); sched_idle_exit(); preempt_enable_no_resched(); schedule(); -- 1.7.7.6