From patchwork Thu Feb 9 09:25:25 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Juri Lelli X-Patchwork-Id: 93680 Delivered-To: patch@linaro.org Received: by 10.140.20.99 with SMTP id 90csp158458qgi; Thu, 9 Feb 2017 01:28:17 -0800 (PST) X-Received: by 10.99.8.70 with SMTP id 67mr2711961pgi.205.1486632497747; Thu, 09 Feb 2017 01:28:17 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id l1si9597152plg.100.2017.02.09.01.28.17; Thu, 09 Feb 2017 01:28:17 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752445AbdBIJ2P (ORCPT + 25 others); Thu, 9 Feb 2017 04:28:15 -0500 Received: from foss.arm.com ([217.140.101.70]:38052 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752191AbdBIJ1G (ORCPT ); Thu, 9 Feb 2017 04:27:06 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 829D9165D; Thu, 9 Feb 2017 01:26:20 -0800 (PST) Received: from e106622-lin.cambridge.arm.com (e106622-lin.cambridge.arm.com [10.1.211.43]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id CFE563F24D; Thu, 9 Feb 2017 01:26:17 -0800 (PST) From: Juri Lelli To: linux-kernel@vger.kernel.org Cc: linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, peterz@infradead.org, vincent.guittot@linaro.org, robh+dt@kernel.org, mark.rutland@arm.com, linux@arm.linux.org.uk, sudeep.holla@arm.com, lorenzo.pieralisi@arm.com, catalin.marinas@arm.com, will.deacon@arm.com, morten.rasmussen@arm.com, dietmar.eggemann@arm.com, juri.lelli@arm.com, broonie@kernel.org, gregkh@linuxfoundation.org Subject: [PATCH v2 9/9] arm, arm64, drivers: add a prefix to drivers arch_topology interfaces Date: Thu, 9 Feb 2017 09:25:25 +0000 Message-Id: <20170209092525.6654-10-juri.lelli@arm.com> X-Mailer: git-send-email 2.10.0 In-Reply-To: <20170209092525.6654-1-juri.lelli@arm.com> References: <20170209092525.6654-1-juri.lelli@arm.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now that some functions that deal with arch topology information live under drivers, there is a clash of naming that might create confusion. Tidy things up by creating a drivers namespace for interfaces used by arch code; achieve this by prepending a 'atd_' (arch topology driver) prefix to driver interfaces. Signed-off-by: Juri Lelli --- arch/arm/kernel/topology.c | 8 ++++---- arch/arm64/kernel/topology.c | 4 ++-- drivers/base/arch_topology.c | 20 ++++++++++---------- include/linux/arch_topology.h | 8 ++++---- 4 files changed, 20 insertions(+), 20 deletions(-) -- 2.10.0 diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c index 1855632105a4..a33e0891fee2 100644 --- a/arch/arm/kernel/topology.c +++ b/arch/arm/kernel/topology.c @@ -110,7 +110,7 @@ static void __init parse_dt_topology(void) continue; } - if (parse_cpu_capacity(cn, cpu)) { + if (atd_parse_cpu_capacity(cn, cpu)) { of_node_put(cn); continue; } @@ -159,7 +159,7 @@ static void __init parse_dt_topology(void) >> (SCHED_CAPACITY_SHIFT-1)) + 1; if (cap_from_dt) - normalize_cpu_capacity(); + atd_normalize_cpu_capacity(); } /* @@ -172,10 +172,10 @@ static void update_cpu_capacity(unsigned int cpu) if (!cpu_capacity(cpu) || cap_from_dt) return; - set_capacity_scale(cpu, cpu_capacity(cpu) / middle_capacity); + atd_set_capacity_scale(cpu, cpu_capacity(cpu) / middle_capacity); pr_info("CPU%u: update cpu_capacity %lu\n", - cpu, arch_scale_cpu_capacity(NULL, cpu)); + cpu, atd_scale_cpu_capacity(NULL, cpu)); } #else diff --git a/arch/arm64/kernel/topology.c b/arch/arm64/kernel/topology.c index 6d2af4d9479f..1f6b34b6b359 100644 --- a/arch/arm64/kernel/topology.c +++ b/arch/arm64/kernel/topology.c @@ -38,7 +38,7 @@ static int __init get_cpu_for_node(struct device_node *node) for_each_possible_cpu(cpu) { if (of_get_cpu_node(cpu, NULL) == cpu_node) { - parse_cpu_capacity(cpu_node, cpu); + atd_parse_cpu_capacity(cpu_node, cpu); of_node_put(cpu_node); return cpu; } @@ -190,7 +190,7 @@ static int __init parse_dt_topology(void) if (ret != 0) goto out_map; - normalize_cpu_capacity(); + atd_normalize_cpu_capacity(); /* * Check that all cores are in the topology; the SMP code will diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c index 409a8bb613f2..5c20280bb746 100644 --- a/drivers/base/arch_topology.c +++ b/drivers/base/arch_topology.c @@ -22,12 +22,12 @@ static DEFINE_MUTEX(cpu_scale_mutex); static DEFINE_PER_CPU(unsigned long, cpu_scale) = SCHED_CAPACITY_SCALE; -unsigned long arch_scale_cpu_capacity(struct sched_domain *sd, int cpu) +unsigned long atd_scale_cpu_capacity(struct sched_domain *sd, int cpu) { return per_cpu(cpu_scale, cpu); } -void set_capacity_scale(unsigned int cpu, unsigned long capacity) +void atd_set_capacity_scale(unsigned int cpu, unsigned long capacity) { per_cpu(cpu_scale, cpu) = capacity; } @@ -39,7 +39,7 @@ static ssize_t cpu_capacity_show(struct device *dev, struct cpu *cpu = container_of(dev, struct cpu, dev); return sprintf(buf, "%lu\n", - arch_scale_cpu_capacity(NULL, cpu->dev.id)); + atd_scale_cpu_capacity(NULL, cpu->dev.id)); } static ssize_t cpu_capacity_store(struct device *dev, @@ -61,7 +61,7 @@ static ssize_t cpu_capacity_store(struct device *dev, mutex_lock(&cpu_scale_mutex); for_each_cpu(i, &cpu_topology[this_cpu].core_sibling) - set_capacity_scale(i, new_capacity); + atd_set_capacity_scale(i, new_capacity); mutex_unlock(&cpu_scale_mutex); } @@ -93,7 +93,7 @@ u32 capacity_scale; u32 *raw_capacity; static bool cap_parsing_failed; -void normalize_cpu_capacity(void) +void atd_normalize_cpu_capacity(void) { u64 capacity; int cpu; @@ -108,14 +108,14 @@ void normalize_cpu_capacity(void) cpu, raw_capacity[cpu]); capacity = (raw_capacity[cpu] << SCHED_CAPACITY_SHIFT) / capacity_scale; - set_capacity_scale(cpu, capacity); + atd_set_capacity_scale(cpu, capacity); pr_debug("cpu_capacity: CPU%d cpu_capacity=%lu\n", - cpu, arch_scale_cpu_capacity(NULL, cpu)); + cpu, atd_scale_cpu_capacity(NULL, cpu)); } mutex_unlock(&cpu_scale_mutex); } -int __init parse_cpu_capacity(struct device_node *cpu_node, int cpu) +int __init atd_parse_cpu_capacity(struct device_node *cpu_node, int cpu) { int ret = 1; u32 cpu_capacity; @@ -180,12 +180,12 @@ init_cpu_capacity_callback(struct notifier_block *nb, cpus_to_visit, policy->related_cpus); for_each_cpu(cpu, policy->related_cpus) { - raw_capacity[cpu] = arch_scale_cpu_capacity(NULL, cpu) * + raw_capacity[cpu] = atd_scale_cpu_capacity(NULL, cpu) * policy->cpuinfo.max_freq / 1000UL; capacity_scale = max(raw_capacity[cpu], capacity_scale); } if (cpumask_empty(cpus_to_visit)) { - normalize_cpu_capacity(); + atd_normalize_cpu_capacity(); kfree(raw_capacity); pr_debug("cpu_capacity: parsing done\n"); cap_parsing_done = true; diff --git a/include/linux/arch_topology.h b/include/linux/arch_topology.h index 4edae9fe8cdd..e25458d7ee9a 100644 --- a/include/linux/arch_topology.h +++ b/include/linux/arch_topology.h @@ -4,14 +4,14 @@ #ifndef _LINUX_ARCH_TOPOLOGY_H_ #define _LINUX_ARCH_TOPOLOGY_H_ -void normalize_cpu_capacity(void); +void atd_normalize_cpu_capacity(void); struct device_node; -int parse_cpu_capacity(struct device_node *cpu_node, int cpu); +int atd_parse_cpu_capacity(struct device_node *cpu_node, int cpu); struct sched_domain; -unsigned long arch_scale_cpu_capacity(struct sched_domain *sd, int cpu); +unsigned long atd_scale_cpu_capacity(struct sched_domain *sd, int cpu); -void set_capacity_scale(unsigned int cpu, unsigned long capacity); +void atd_set_capacity_scale(unsigned int cpu, unsigned long capacity); #endif /* _LINUX_ARCH_TOPOLOGY_H_ */