From patchwork Thu Jan 24 11:10:21 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hiroshi DOYU X-Patchwork-Id: 2073701 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id DA5873FCDE for ; Thu, 31 Jan 2013 13:05:24 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1U0tnA-00028l-59; Thu, 31 Jan 2013 13:03:00 +0000 Received: from hqemgate04.nvidia.com ([216.228.121.35]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1TyKi7-0006Mb-WD for linux-arm-kernel@lists.infradead.org; Thu, 24 Jan 2013 11:11:13 +0000 Received: from hqnvupgp05.nvidia.com (Not Verified[216.228.121.13]) by hqemgate04.nvidia.com id ; Thu, 24 Jan 2013 03:10:53 -0800 Received: from hqemhub02.nvidia.com ([172.17.108.22]) by hqnvupgp05.nvidia.com (PGP Universal service); Thu, 24 Jan 2013 03:11:06 -0800 X-PGP-Universal: processed; by hqnvupgp05.nvidia.com on Thu, 24 Jan 2013 03:11:06 -0800 Received: from hqnvemgw02.nvidia.com (172.16.227.111) by hqemhub02.nvidia.com (172.20.150.31) with Microsoft SMTP Server id 8.3.297.1; Thu, 24 Jan 2013 03:11:05 -0800 Received: from daphne.nvidia.com (Not Verified[172.16.212.96]) by hqnvemgw02.nvidia.com with MailMarshal (v6,7,2,8378) id ; Thu, 24 Jan 2013 03:11:06 -0800 Received: from oreo.Nvidia.com (dhcp-10-21-25-186.nvidia.com [10.21.25.186]) by daphne.nvidia.com (8.13.8+Sun/8.8.8) with ESMTP id r0OBAjPp028032; Thu, 24 Jan 2013 03:11:03 -0800 (PST) From: Hiroshi Doyu To: Subject: [v4 1/6] ARM: tegra: Use DT /cpu node to detect number of CPU core Date: Thu, 24 Jan 2013 13:10:21 +0200 Message-ID: <1359025829-22306-2-git-send-email-hdoyu@nvidia.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1359025829-22306-1-git-send-email-hdoyu@nvidia.com> References: <1359025829-22306-1-git-send-email-hdoyu@nvidia.com> MIME-Version: 1.0 X-Bad-Reply: References and In-Reply-To but no 'Re:' in Subject. X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130124_061112_230842_09C7499B X-CRM114-Status: GOOD ( 11.41 ) X-Spam-Score: -4.6 (----) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-4.6 points) pts rule name description ---- ---------------------- -------------------------------------------------- 3.0 KHOP_BIG_TO_CC Sent to 10+ recipients instaed of Bcc or a list -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [216.228.121.35 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record -0.7 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-Mailman-Approved-At: Thu, 31 Jan 2013 07:54:32 -0500 Cc: Andrew Lunn , Kukjin Kim , Russell King , Jason Cooper , Stephen Warren , linux-kernel@vger.kernel.org, Olof Johansson , Shawn Guo , linux-arm-kernel@lists.infradead.org, Hiroshi Doyu X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 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 Tegra SoCs does not use SCU based to detect CPU core numbers but they use DT /cpu node. If it's not provided or failed, it continues as a single core. Signed-off-by: Hiroshi Doyu Reviewed-by: Lorenzo Pieralisi --- Based on the discussion: http://lists.infradead.org/pipermail/linux-arm-kernel/2013-January/140608.html --- arch/arm/mach-tegra/platsmp.c | 15 --------------- 1 file changed, 15 deletions(-) diff --git a/arch/arm/mach-tegra/platsmp.c b/arch/arm/mach-tegra/platsmp.c index 3ec7fc4..ee847896 100644 --- a/arch/arm/mach-tegra/platsmp.c +++ b/arch/arm/mach-tegra/platsmp.c @@ -177,23 +177,8 @@ done: return status; } -/* - * Initialise the CPU possible map early - this describes the CPUs - * which may be present or become present in the system. - */ static void __init tegra_smp_init_cpus(void) { - unsigned int i, ncores = scu_get_core_count(scu_base); - - if (ncores > nr_cpu_ids) { - pr_warn("SMP: %u cores greater than maximum (%u), clipping\n", - ncores, nr_cpu_ids); - ncores = nr_cpu_ids; - } - - for (i = 0; i < ncores; i++) - set_cpu_possible(i, true); - set_smp_cross_call(gic_raise_softirq); }