From patchwork Mon Jun 13 11:21:47 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Zyngier X-Patchwork-Id: 874512 Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by demeter2.kernel.org (8.14.4/8.14.4) with ESMTP id p5DBQqrx027160 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 13 Jun 2011 11:27:16 GMT Received: from canuck.infradead.org ([2001:4978:20e::1]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QW5HY-00006f-Nu; Mon, 13 Jun 2011 11:26:13 +0000 Received: from localhost ([127.0.0.1] helo=canuck.infradead.org) by canuck.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1QW5HX-0005nd-PP; Mon, 13 Jun 2011 11:26:11 +0000 Received: from casper.infradead.org ([2001:770:15f::2]) by canuck.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QW5Ef-00051V-KZ for linux-arm-kernel@canuck.infradead.org; Mon, 13 Jun 2011 11:23:13 +0000 Received: from [94.185.240.25] (helo=service87.mimecast.com) by casper.infradead.org with smtp (Exim 4.76 #1 (Red Hat Linux)) id 1QW5Ed-0003pX-Nr for linux-arm-kernel@lists.infradead.org; Mon, 13 Jun 2011 11:23:12 +0000 Received: from cam-owa2.Emea.Arm.com (fw-tnat.cambridge.arm.com [217.140.96.21]) by service87.mimecast.com; Mon, 13 Jun 2011 12:22:42 +0100 Received: from localhost.localdomain ([10.1.255.212]) by cam-owa2.Emea.Arm.com with Microsoft SMTPSVC(6.0.3790.3959); Mon, 13 Jun 2011 12:22:50 +0100 From: Marc Zyngier To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v7 02/14] ARM: smp: add interrupt handler for local timers Date: Mon, 13 Jun 2011 12:21:47 +0100 Message-Id: <1307964119-4187-3-git-send-email-marc.zyngier@arm.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1307964119-4187-1-git-send-email-marc.zyngier@arm.com> References: <1307964119-4187-1-git-send-email-marc.zyngier@arm.com> X-OriginalArrivalTime: 13 Jun 2011 11:22:50.0466 (UTC) FILETIME=[3AD6FC20:01CC29BC] X-MC-Unique: 111061312224204201 X-CRM114-Version: 20090807-BlameThorstenAndJenny ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20110613_122311_874110_C32523FF X-CRM114-Status: GOOD ( 10.69 ) X-Spam-Score: -1.8 (-) X-Spam-Report: SpamAssassin version 3.3.2-r929478 on casper.infradead.org summary: Content analysis details: (-1.8 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [94.185.240.25 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] 0.8 RDNS_NONE Delivered to internal network by a host with no rDNS Cc: Thomas Gleixner X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter2.kernel.org [140.211.167.43]); Mon, 13 Jun 2011 11:27:16 +0000 (UTC) Provide a "normal" interrupt handler for local timers. It is expected that most timer implementations will use this handler unless they have more specific requirements. Signed-off-by: Marc Zyngier --- arch/arm/include/asm/localtimer.h | 6 ++++++ arch/arm/kernel/smp.c | 12 ++++++++++++ 2 files changed, 18 insertions(+), 0 deletions(-) diff --git a/arch/arm/include/asm/localtimer.h b/arch/arm/include/asm/localtimer.h index 080d74f..bef44b3 100644 --- a/arch/arm/include/asm/localtimer.h +++ b/arch/arm/include/asm/localtimer.h @@ -10,6 +10,8 @@ #ifndef __ASM_ARM_LOCALTIMER_H #define __ASM_ARM_LOCALTIMER_H +#include + struct clock_event_device; /* @@ -22,6 +24,10 @@ void percpu_timer_setup(void); */ asmlinkage void do_local_timer(struct pt_regs *); +/* + * Per-cpu timer IRQ handler + */ +irqreturn_t percpu_timer_handler(int irq, void *dev_id); #ifdef CONFIG_LOCAL_TIMERS diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 344e52b..daa7088 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -460,6 +460,18 @@ asmlinkage void __exception_irq_entry do_local_timer(struct pt_regs *regs) set_irq_regs(old_regs); } +irqreturn_t percpu_timer_handler(int irq, void *dev_id) +{ + struct clock_event_device *evt = dev_id; + + if (local_timer_ack()) { + evt->event_handler(evt); + return IRQ_HANDLED; + } + + return IRQ_NONE; +} + void show_local_irqs(struct seq_file *p, int prec) { unsigned int cpu;