From patchwork Thu Jul 21 15:25:15 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Russell King - ARM Linux X-Patchwork-Id: 995562 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 p6LFShWs010826 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 21 Jul 2011 15:29:04 GMT Received: from canuck.infradead.org ([2001:4978:20e::1]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QjvAF-0008Am-5x; Thu, 21 Jul 2011 15:27:52 +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 1Qjv9T-0006wu-6s; Thu, 21 Jul 2011 15:27:03 +0000 Received: from [2002:4e20:1eda::1] (helo=caramon.arm.linux.org.uk) by canuck.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1Qjv7p-0006Sg-Ci for linux-arm-kernel@lists.infradead.org; Thu, 21 Jul 2011 15:25:23 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=arm.linux.org.uk; s=caramon; h=Date:Sender:Message-Id:Content-Type:MIME-Version:Cc:Subject:Cc:To:From:References:In-Reply-To; bh=BQ9bWuBAjRicHbj3YxXtVbYx3ch65/9o1qTNHLNbhXo=; b=mwRjqhw34ljlnTmyr191oO59BRO5CKyIHjOY/4FFP6GrVixsZCwFhFeEE9Wm6FCRKq27I3mSsZYID1vdykTPjHGVmAWjCNN8ajCAz3LKTAwwAAHjgNkK11JuDqx/bE3H2GZwncsGscCyf1u24uX+jtagdE4xl/GlspCOqEW1iqg=; Received: from e0022681537dd.dyn.arm.linux.org.uk ([2002:4e20:1eda:1:222:68ff:fe15:37dd] helo=rmk-PC.arm.linux.org.uk) by caramon.arm.linux.org.uk with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.72) (envelope-from ) id 1Qjv7k-00043U-Ne; Thu, 21 Jul 2011 16:25:17 +0100 Received: from rmk by rmk-PC.arm.linux.org.uk with local (Exim 4.76) (envelope-from ) id 1Qjv7j-0003Ia-FD; Thu, 21 Jul 2011 16:25:15 +0100 In-Reply-To: <20110721151413.GD28942@n2100.arm.linux.org.uk> References: <20110721151413.GD28942@n2100.arm.linux.org.uk> From: Russell King - ARM Linux To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 3/4] ARM: CPU hotplug: pass in proper affinity mask on IRQ migration MIME-Version: 1.0 Content-Disposition: inline Message-Id: Date: Thu, 21 Jul 2011 16:25:15 +0100 X-CRM114-Version: 20090807-BlameThorstenAndJenny ( TRE 0.7.6 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20110721_112522_393354_CA5F6E85 X-CRM114-Status: GOOD ( 13.17 ) X-Spam-Score: 1.2 (+) X-Spam-Report: SpamAssassin version 3.3.1 on canuck.infradead.org summary: Content analysis details: (1.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 1.3 RDNS_NONE Delivered to internal network by a host with no rDNS 0.0 TO_NO_BRKTS_NORDNS To: misformatted and no rDNS Cc: Thomas Gleixner , Santosh Shilimkar 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: , 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]); Thu, 21 Jul 2011 15:29:04 +0000 (UTC) Now that the GIC takes care of selecting a target interrupt from the affinity mask, we don't need all this complexity in the core code anymore. Just detect when we need to break affinity. Signed-off-by: Russell King --- arch/arm/kernel/irq.c | 10 ++++------ 1 files changed, 4 insertions(+), 6 deletions(-) diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c index d7aa5c9..ab63c05 100644 --- a/arch/arm/kernel/irq.c +++ b/arch/arm/kernel/irq.c @@ -133,17 +133,15 @@ int __init arch_probe_nr_irqs(void) static bool migrate_one_irq(struct irq_data *d) { - unsigned int cpu = cpumask_any_and(d->affinity, cpu_online_mask); + const struct cpumask *affinity = d->affinity; bool ret = false; - if (cpu >= nr_cpu_ids) { - cpu = cpumask_any(cpu_online_mask); + if (cpumask_any_and(affinity, cpu_online_mask) >= nr_cpu_ids) { + affinity cpu_online_mask; ret = true; } - pr_debug("IRQ%u: moving from cpu%u to cpu%u\n", d->irq, d->node, cpu); - - d->chip->irq_set_affinity(d, cpumask_of(cpu), true); + d->chip->irq_set_affinity(d, affinity, true); return ret; }