From patchwork Mon Jun 9 08:49:10 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiri Slaby X-Patchwork-Id: 4319491 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 2CB619F433 for ; Mon, 9 Jun 2014 08:54:13 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5A8A42011D for ; Mon, 9 Jun 2014 08:54:12 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 91D8B20115 for ; Mon, 9 Jun 2014 08:54:11 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WtvJC-0007G8-2i; Mon, 09 Jun 2014 08:52:02 +0000 Received: from ip4-83-240-18-248.cust.nbox.cz ([83.240.18.248]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WtvJ3-0007Ci-Vn for linux-arm-kernel@lists.infradead.org; Mon, 09 Jun 2014 08:51:54 +0000 Received: from ku by ip4-83-240-18-248.cust.nbox.cz with local (Exim 4.80.1) (envelope-from ) id 1WtvIX-0007bs-S8; Mon, 09 Jun 2014 10:51:21 +0200 From: Jiri Slaby To: stable@vger.kernel.org Subject: [PATCH 3.12 015/146] irqchip: Gic: Support forced affinity setting Date: Mon, 9 Jun 2014 10:49:10 +0200 Message-Id: X-Mailer: git-send-email 1.9.3 In-Reply-To: References: In-Reply-To: References: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140609_015154_213205_E85E693F X-CRM114-Status: GOOD ( 11.19 ) X-Spam-Score: 3.6 (+++) Cc: , Kukjin Kim , Bartlomiej Zolnierkiewicz , Tomasz Figa , Daniel Lezcano , linux-kernel@vger.kernel.org, Kyungmin Park , Thomas Gleixner , Jiri Slaby , linux-arm-kernel@lists.infradead.org, Marek Szyprowski X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Thomas Gleixner 3.12-stable review patch. If anyone has any objections, please let me know. =============== commit ffde1de64012c406dfdda8690918248b472f24e4 upstream. To support the affinity setting of per cpu timers in the early startup of a not yet online cpu, implement the force logic, which disables the cpu online check. Tagged for stable to allow a simple fix of the affected SoC clock event drivers. Signed-off-by: Thomas Gleixner Tested-by: Krzysztof Kozlowski Cc: Kyungmin Park Cc: Marek Szyprowski Cc: Bartlomiej Zolnierkiewicz Cc: Tomasz Figa , Cc: Daniel Lezcano , Cc: Kukjin Kim Cc: linux-arm-kernel@lists.infradead.org, Link: http://lkml.kernel.org/r/20140416143315.916984416@linutronix.de Signed-off-by: Thomas Gleixner Signed-off-by: Jiri Slaby --- drivers/irqchip/irq-gic.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index d0e948084eaf..86df97f6fd27 100644 --- a/drivers/irqchip/irq-gic.c +++ b/drivers/irqchip/irq-gic.c @@ -246,10 +246,14 @@ static int gic_set_affinity(struct irq_data *d, const struct cpumask *mask_val, bool force) { void __iomem *reg = gic_dist_base(d) + GIC_DIST_TARGET + (gic_irq(d) & ~3); - unsigned int shift = (gic_irq(d) % 4) * 8; - unsigned int cpu = cpumask_any_and(mask_val, cpu_online_mask); + unsigned int cpu, shift = (gic_irq(d) % 4) * 8; u32 val, mask, bit; + if (!force) + cpu = cpumask_any_and(mask_val, cpu_online_mask); + else + cpu = cpumask_first(mask_val); + if (cpu >= NR_GIC_CPU_IF || cpu >= nr_cpu_ids) return -EINVAL;