From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932759Ab2IUSee (ORCPT ); Fri, 21 Sep 2012 14:34:34 -0400 Received: from service87.mimecast.com ([91.220.42.44]:36828 "EHLO service87.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757544Ab2IUSc3 (ORCPT ); Fri, 21 Sep 2012 14:32:29 -0400 From: morten.rasmussen@arm.com To: paulmck@linux.vnet.ibm.com, pjt@google.com, peterz@infradead.org, suresh.b.siddha@intel.com Cc: morten.rasmussen@arm.com, linaro-sched-sig@lists.linaro.org, linaro-dev@lists.linaro.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH 07/10] ARM: sched: Setup SCHED_HMP domains Date: Fri, 21 Sep 2012 19:32:22 +0100 Message-Id: <1348252345-5642-8-git-send-email-morten.rasmussen@arm.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1348252345-5642-1-git-send-email-morten.rasmussen@arm.com> References: <1348252345-5642-1-git-send-email-morten.rasmussen@arm.com> X-OriginalArrivalTime: 21 Sep 2012 18:32:26.0569 (UTC) FILETIME=[7317AB90:01CD9827] X-MC-Unique: 112092119322803401 Content-Type: text/plain; charset=WINDOWS-1252 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by mail.home.local id q8LIZUsK011380 From: Morten Rasmussen SCHED_HMP requires the different cpu types to be represented by an ordered list of hmp_domains. Each hmp_domain represents all cpus of a particular type using a cpumask. The list is platform specific and therefore must be generated by platform code by implementing arch_get_hmp_domains(). Signed-off-by: Morten Rasmussen --- arch/arm/kernel/topology.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c index 7682e12..ec8ad5c 100644 --- a/arch/arm/kernel/topology.c +++ b/arch/arm/kernel/topology.c @@ -383,6 +383,28 @@ void __init arch_get_fast_and_slow_cpus(struct cpumask *fast, cpumask_clear(slow); } +void __init arch_get_hmp_domains(struct list_head *hmp_domains_list) +{ + struct cpumask hmp_fast_cpu_mask; + struct cpumask hmp_slow_cpu_mask; + struct hmp_domain *domain; + + arch_get_fast_and_slow_cpus(&hmp_fast_cpu_mask, &hmp_slow_cpu_mask); + + /* + * Initialize hmp_domains + * Must be ordered with respect to compute capacity. + * Fastest domain at head of list. + */ + domain = (struct hmp_domain *) + kmalloc(sizeof(struct hmp_domain), GFP_KERNEL); + cpumask_copy(&domain->cpus, &hmp_slow_cpu_mask); + list_add(&domain->hmp_domains, hmp_domains_list); + domain = (struct hmp_domain *) + kmalloc(sizeof(struct hmp_domain), GFP_KERNEL); + cpumask_copy(&domain->cpus, &hmp_fast_cpu_mask); + list_add(&domain->hmp_domains, hmp_domains_list); +} #endif /* CONFIG_SCHED_HMP */ -- 1.7.9.5